CN1968733B - Filter arrangements, housings, assemblies, and methods - Google Patents

Abstract

An air cleaner and preferred components for an air cleaner are provided. In one arrangement, the air cleaner includes a band or cassette component, configured for removably receiving a z-filter media pack therein, during use. In another arrangement, the band is permanently mounted of the media pack. Air cleaner arrangements configured for use of the cassette or band therewith included an arrangement with a central housing section for receipt of the main filter cartridge and cassette, and which has thereon a mounting arrangement with 3 mountable sides. Preferred precleaner arrangements and outlet tube arrangements can be secured to the center housing section.

Description

Filtration device structure; Shell; Assembly and method

It is the U.S. Provisional Patent Application 60/649 on February 1st, 2005 that present patent application requires the applying date, 301 and the applying date be the U.S. Provisional Patent Application 60/604,549 on August 25th, 2004, with the applying date be the priority of the U.S. Provisional Patent Application 60/567,121 on April 30th, 2004.Application 60/649,301, application 60/604,549 and apply for 60/567,121 complete content respectively in full form be incorporated into this paper at this.

Technical field

The application relates to air cleaner, for example, is used for the engine combustion-supporting air of purifying vehicle and other equipment.The application provides preferred parts, assembly and method.

Background technology

Usually carry granular material in the air-flow.In a lot of situations, need from air-flow, remove some or all granular material.For example, enter in the engine air inlet air-flow of motor vehicles or generating equipment and generally include granular material.If described granular material arrives the internal work district of associated mechanisms, may cause great destruction.Therefore, for these systems, preferably remove described granular material from the air-flow upstream of correlation engine or other equipment.Developed the multiple air filter arrangement that is used to remove particle already.

Have the general trend of using such air filter arrangement, this structure is used as the medium bag with the z-filter media construction.Generally, the z-filter media construction can be characterized by and comprise that groove line sheet material is fixed to surficial sheets, forms the medium pack arrangement.The example of z-filtration has description in following document: PCT publication number WO 97/40918, and open day is on November 6th, 1997; United States Patent (USP) 6,190,432 and 6,350,291; PCT applies for US 04/07927, and the applying date is on March 17th, 2004; U.S. Provisional Application 60/532,783, the applying date is on December 22nd, 2003; PCT publication number 03/095068, open day is on November 20th, 2003; PCT publication number WO 04/007054, open day is on January 22nd, 2004; PCT publication number WO 03/084641, open day is on October 16th, 2003; With, U.S. Provisional Application 60/543,804, the applying date is on February 11st, 2004; The complete content of every part of document being quoted is incorporated into this paper at this.

For some structure, wish to develop such setting, wherein the z-filter medium is loaded in the air filter housing by the side (rather than terminal) of shell.Such structure is disclosed in, and for example among the WO 03/095068, the document is incorporated into this paper at this.

Generally, seeking to improve always.

Summary of the invention

According to the present invention, provide different feature and technology, so that help being used for air filter arrangement or as the parts of air filter arrangement.Some preferred parts is provided, and the assembly that adopts these parts.In addition, provide assembling, maintenance and using method.

As shown in an embodiment, the concrete componentry that this paper is disclosed, technology and structure can be used together, so that advantage is outstanding.But, can select respectively and utilize them to produce other favourable structures.Therefore, structure of the present invention is not had particular requirement, showed all disclosed different favorable characteristics.

Disclosed favorable characteristics comprises belt or the box parts that can be used in the air cleaner assembly.The box parts are configured to help during use the z-filter medium is contained Na Qinei.Described box parts can manually separate with the medium bag or forever install.In this article, term " the artificial separation " and version thereof represent that described parts can separate under the pressure of usual hand, and do not damage the box parts, allow described box parts to be reused.When fitting together, box parts and filter element are known as filter element/casket combination or its version sometimes.

Other favorable characteristics that provided comprise the overall shell mechanism with favourable mounting structure.Disclosed a kind of concrete mounting structure is box-like U-shaped structure, and it has three sides that are used to install, two opposite sides and a bottom of corresponding box-like U-shaped.In this article, term " box-like " is meant the u-shape that is formed by three straight installation sides; That is two relative parallel side and extend therebetween center bottom.Although other schemes are feasible, in shown common preferred structure, on air filter housing, provide the side service ports, described service ports is positioned at the position relative with the center bottom of box-like U-shaped mounting structure.

The modular structure of air cleaner also is provided, has comprised prefabricated and assemblnig then parts respectively, corresponding to: intake section; Central authorities or primary air filter element holding portion; Access cover; And exit portion.These parts can be prefabricated, are assembled into air cleaner then.Usually preferred air cleaner comprises with these molded parts of plastics, and is soldered then or otherwise be fixed together, to form air filter housing.

The preferred security that is used for preferred air filter arrangement of the present invention component structure also is provided.Described safety element comprises is convenient to mechanical handle arrangement, and helps the pivot ledge installed.

Be appreciated that other preferable feature from following drawings and detailed description, parts and technology.

Description of drawings

Fig. 1 is the arrival end perspective view of air cleaner assembly of the present invention.

Fig. 2 is the horizontal cross along the line 2-2 of Fig. 1.

Fig. 3 is the vertical sectional view along the line 3-3 of Fig. 1.

Fig. 4 is the vertical sectional view along the line 4-4 of Fig. 1.

Fig. 5 is the end-view that can be used for the box parts of assembly shown in Figure 1.

Fig. 6 is the cutaway view along the line 6-6 of Fig. 5.

Fig. 7 is the cutaway view along the line 7-7 of Fig. 5.

Fig. 7 A is the arrival end perspective view of box parts shown in Figure 5.

Fig. 8 is the perspective schematic view with the assembly that is similar to module diagnostic shown in Figure 1.

Fig. 9 is the schematic diagram of assembly shown in Figure 8, and the beginning part of removing the lid step is shown.

Figure 10 is the structure shown in Fig. 8 and 9, and the later stage part that relative Fig. 9 removes lid is shown.

Figure 11 is the schematic diagram of structure shown in Fig. 8-10, illustrates to remove lid and remove the filter element parts.

Figure 12 is the schematic diagram of structure shown in Figure 11, the filter element parts are shown separate with cover part from casket, shown in both all remove from air filter housing.

Figure 13 illustrates and partly removes safety or secondary filter among Figure 12.

Figure 14 represents to remove fully among Figure 13 security filter.

Figure 15 represents assembly shown in Figure 8, and shown spout member separates with inlet part, is how alternately to install so that understand them.

Figure 16 A-X is the schematic diagram how assembly that expression has some feature shown in Figure 8 can be installed along a plurality of orientations; Figure 16 A-X only shows some possible orientations.

Figure 17 is the perspective view of another embodiment of air cleaner shown in Figure 1.

Figure 18 is the schematic diagram that comprises the system of air cleaner.

Figure 19 is the side view of main or primary filter filter core shown in Figure 3.

Figure 20 be main or primary filter filter core shown in Figure 19 overlook (port of export) figure.

Figure 21 is a filter element shown in Figure 19 cutaway view along the line 21-21 of Figure 20.

Figure 22 is the part figure that can be used for the z-filter medium of filter element shown in Fig. 3 and the 19-21.

Figure 23 is the plan view from above that can be used for the safety element of assembly shown in Fig. 1-3.

Figure 24 is the arrival end perspective view of safety element shown in Figure 23.

Figure 25 is the cutaway view along the line 25-25 of Figure 23.

Figure 26 is second partial schematic perspective view that can be used for the z-filter medium of structure of the present invention.

Figure 27 is the schematic cross sectional views of part medium shown in Figure 26.

Figure 28 is the schematic diagram of the example of different corrugated medium definition.

Figure 29 is the schematic diagram that is used to make the method for medium according to the present invention.

Figure 30 is the cutaway view of optional terminal acupuncture that can be used for the media slot line of structure of the present invention.

Figure 31 is the lateral elevational view of second kind of air cleaner assembly in accordance with the principles of the present invention.

Figure 32 is the plan view from above of air cleaner shown in Figure 31.

Figure 33 is the arrival end view of air cleaner shown in Figure 31.

Figure 34 is the port of export view of air cleaner shown in Figure 31.

Figure 35 is the side perspective view of air cleaner shown in Figure 31.

Figure 36 is the decomposition diagram of air cleaner shown in Figure 31.

Figure 37 is an air cleaner shown in Figure 31 cutaway view along the line 37-37 of Figure 35.

Figure 38 is an air cleaner shown in Figure 31 cutaway view along the line 38-38 of Figure 35.

Figure 39 is the lateral elevational view that can be used for the filter element of air cleaner assembly shown in Figure 31.

Figure 40 is the cutaway view of filter element shown in Figure 39.

Figure 41 is the perspective view of filter element shown in Figure 39.

Figure 42 is the arrival end view that can be used for the casket in the air cleaner that filter element with Figure 39 is contained in Figure 31.

Figure 43 is the cutaway view of filter element shown in Figure 42 43-43 along the line.

Figure 44 is the cutaway view of filter element shown in Figure 42 44-44 along the line.

Figure 45 is the port of export perspective view of sub-component, and this sub-component comprises that the filter cell of Figure 39 is contained in the casket of Figure 42.

Figure 46 is the arrival end perspective view of the arrival end of assembly shown in Figure 45.

Figure 47 is the lateral elevational view of the third air cleaner assembly.

Figure 48 is the decomposing schematic representation of air cleaner assembly shown in Figure 47.

Figure 49 is the decomposing schematic representation of the 4th kind of air cleaner assembly.

Figure 50 is the cutaway view of air cleaner assembly shown in Figure 49.

Figure 51 is the perspective view of another embodiment of filter element.

Figure 52 is another perspective view of filter element shown in Figure 51.

Figure 53 is the cutaway view of filter element shown in Figure 51 and 52.

Figure 54 is the perspective view of another embodiment of air cleaner assembly in accordance with the principles of the present invention.

Figure 55 is the cutaway view of air cleaner assembly shown in Figure 54, and the filter element that shows Figure 51 and 52 is operationally installed within it.

Figure 56 is the cutaway view of air cleaner assembly shown in Figure 54, and section is along the line 56-56 of Figure 55.

Figure 57 is the end face front view of air cleaner assembly shown in Figure 54, shows the port of export.

Figure 58 is the end face front view of air cleaner assembly shown in Figure 54, shows arrival end.

Figure 59 is the plan view from above of air cleaner assembly shown in Figure 54.

Figure 60 is the face upwarding view of air cleaner assembly shown in Figure 54.

Figure 61 is the lateral elevational view of air cleaner assembly shown in Figure 54.

Figure 62 is the face upwarding view of filter element shown in Figure 51 and 52.

The specific embodiment

I. summarize the Z-filter media construction.

Groove line shape filter medium can be used to provide the filtering flow structure in many ways.A kind of well-known mode is the z-filtration.Term as used herein " z-filtration " is represented such filtration, wherein, undulatory separately, lautertuns line folding or that otherwise form is used to form vertically, and is parallel usually, entrance and exit lautertuns line group is so that fluid flows through medium; Fluid flows at the relative entrance and exit of medium along groove line length and flows between the end (or flow surface).Some examples of z-filter medium are disclosed in the following document: United States Patent (USP) 5,820,646; 5,772,883; 5,902,364; 5,792,247; 5,895,574; 6,210,469; 6,190,432; 6,350,296; 6,179,890; 6,235,195; Des.399,944; Des.428,128; Des.396,098; Des.398,046; And Des.437,401; More than each part in 15 parts of citing documents all be incorporated into this paper at this.

One type z-filter medium adopts two kinds of specific media components to combine, to form dielectric structure.These two parts are: (1) groove line shape (normally corrugated) media sheet; With, (2) surface dielectric sheet material.The common right and wrong of surface dielectric sheet material are undulatory, and but, it can be undulatory, and for example, perpendicular to groove line direction, as U.S. Provisional Application 60/543,804, the applying date is disclosed in 11 days February in 2004, is incorporated into this paper at this.

Groove line shape (normally corrugated) media sheet is used to form the medium with parallel entrance and exit groove line together with the surface dielectric sheet material.In certain situation, groove line sheet material and surficial sheets are fixed together, and reel subsequently, to form the z-filter media construction.Such structure is disclosed in, for example, U.S.6,235,195 and 6,179,890, described document is incorporated into this paper at this respectively.In some other structure, the non-winding part that is fixed to some groove line media of surface dielectric is laminated to each other, to form filtration.An example of this structure is disclosed in 5,820, among Figure 11 of No. 646 patents, is incorporated into this paper at this.

For the disclosed concrete application of this paper, preferred winding-structure.Usually, groove line sheet material/surficial sheets associative ring is around the medium bag of self reeling and reeling to form, by surficial sheets is outwards carried out.Some coiling technology are disclosed in the PCT application US 04/07927 that U.S. Provisional Application 60/467,521 that the applying date is on May 2nd, 2003 and the applying date are on March 17th, 2004, and described document is incorporated into this paper at this respectively.Resulting winding-structure generally has the part surface sheet material as medium bag outer surface.

Term as used herein " corrugated " expression dielectric structure, be meant medium from the groove line structure by obtaining between two corrugation rolls, that is, enter two roll gap or occlusion portions between the roller, these two rollers have the surface characteristics that is adapted at the influence of resulting medium generation ripple separately.Term " ripple " is not meant that employing does not relate to the groove line of the technology formation that allows medium enter occlusion portion between the corrugation rolls.But, term " corrugated " is even be applicable to further change or the distortion of medium after ripple forms, and described corrugated precedent is incorporated into this paper as being the folding of the PCT WO 04/007054 on January 22nd, 2004 by being disclosed in open day at this.

The corrugated medium is the groove line medium of particular form.Groove line medium is such medium, and it has passes the independent groove line (for example, by forming such as corrugating or folding technology) that extends therebetween.

Adopt the keeped in repair filter element or the filter cartridge arrangement of z-filter medium to be known as " straight-through flow structure " or its version sometimes.Generally, in this article, represent that maintainable filter element generally has mobile end of inlet (or face) and the relative mobile end of outlet (or face), makes fluid generally enter and leave filter element along identical straight-through direction.Term " maintainable " is meant that the filter element that contains medium takes out and changes from corresponding fluid filter termly in this article.In some occasions, mobile end of each inlet and the mobile end of outlet are flat or the plane substantially, and both are parallel to each other.But, the version of this structure, for example, non-planar surfaces is feasible.

Straight-through flow structure (especially for coiling medium bag) be with, for example maintainable filter element, as be incorporated into the U.S. Patent number 6 of this paper at this, 039, the cylindric pleated filter filter core of 778 shown types is different, and flowing in the document generally turns to by maintainable filter core the time.In other words, 6,039, in the filter of No. 778 patents, fluid enters the cylindrical filter filter core by cylindrical side, turns to then by end face and discharges (in the system that flows forward).In common reverse flow system, fluid enters maintainable cylindric filter core by end face, turns to then by the side of cylindrical filter filter core to discharge.The example of this reverse flow system shown in 992, is incorporated into this paper at this at U.S. Patent number 5,613.

Term as used herein " z-filter media construction " and version thereof, be meant any or all of in the following structure: ripple or other groove line medium nets are fixed on the surface dielectric, have suitable sealing to allow to form inlet and outlet slot line; Or, described media roll around or structure or form the three-dimensional network of inlet and outlet slot line otherwise; And/or, comprise the filtration device structure of described medium.

In Figure 26, show the example of the medium 401 that can be used for the z-filter medium.Medium 401 is formed by corrugated sheet 403 and surficial sheets 404.

Generally, the corrugated sheet of Figure 26 403 generally is characterized as being in this article has rule, crooked, the wave mode of groove line or ripple 407.In this article, term " wave mode " is meant trough 407b alternately and groove line or the ripple pattern of crest 407a.In this article, term " rule " is meant the following fact: paired trough and crest (407b, 407a) ripple (or the groove line) shape and size with identical repetition substantially replace (in addition, in the structure of rule, each trough 407b comes down to the anti-phase of each crest 407a usually).Term " rule " thereby expression ripple (or groove line) type comprise trough and crest, and every pair (comprising adjacent trough and crest) repeats, and ripple size and shape do not have the material change on 70% groove line length at least.In this article, term " essence " is meant the change that causes owing in the variation that is used for producing the technology of ripple or groove line sheet material or form, rather than because the minor variations that flexible this fact caused of media sheet 403.For the feature of repeating pattern, and do not mean that in what given filtration device structure in office, must have the crest and the trough of equal number.Medium 401 can, for example between a pair of crest and trough, stop, perhaps part stops (for example, in Figure 26, the medium 401 shown in the part has 8 complete crest 407a and 7 complete trough 407b) along a pair of crest and trough.In addition, relative groove line end (trough and crest end) can differ from one another.In above-mentioned definition, these terminal variations are uncared-for, except as otherwise noted.In other words, the variation of groove line end tendency is comprised by above-mentioned definition.

When characterizing " bending " ripple wave mode in this article, term " crooked " is meant that the ripple pattern is not owing to provide the shape of folding or crease to cause to medium, but since the bottom 407b of the top 407a of each crest and each trough form along radial curve.Although other schemes are feasible, the common radius of described z-filter medium is 0.25mm at least, is no more than 3mm (the not crooked medium by above-mentioned definition also can use) usually.

The ad hoc rules of the corrugated sheet 403 shown in Figure 26, another feature of crooked wave mode be, near each trough and the peak-to-peak mid point 430 of each adjacent wave, the most of length along groove line 407 has transition region, and here sweep is inverted.For example, observe dorsal part or the face 403a of Figure 26, trough 407b is recessed zone, and crest 407a is a raised zones.Certainly, when towards positive side or face 403b observation, the trough 407b of side 403a forms crest; With, the crest 407a of face 403a forms trough.(in certain situation, zone 430 can be a straight section, rather than a point, terminal crooked inversion of straight section 430).

Ad hoc rules shown in Figure 26, the feature of the corrugated sheet 403 of crooked wave mode are that single ripple is straight substantially.In this article, " straight " is illustrated in the length of passing at least 70% between edge 408 and 409 (usually at least 80%), and the cross section of crest 407a and trough 407b does not have substantial variations.Term " straight " in conjunction with ripple pattern shown in Figure 26, it is WO 03/47722 that part is different from this Fig. 1 and PCT publication number that is incorporated into the WO97/40918 of this paper, open day is the cone tank line pattern of the corrugated media of description in 12 days June in 2003.For example, the cone tank line shown in Figure 1 of WO 97/40918 is crooked wave mode, but is not " rule " pattern, or term has straight trough line pattern as used herein.

Referring to Figure 26 and the above explanation of reference, medium 401 has first and second opposed edges 408 and 409.When medium 401 was reeled and formed the medium bag, general edge 409 can form the arrival end of medium bag, and edge 408 then forms the port of export, although opposite direction is feasible.

408 places that keep to the side provide sealant, here with the form of sealing strip (sealant bead) 410, corrugated (groove line shape) sheet material 403 and surficial sheets 404 are sealed.Sealing strip 410 is known as " single face " sealing strip sometimes, when it as sealing strip between corrugated sheet 403 and surficial sheets 404 when forming single face or medium strip 401.Sealing strip 410 is hermetically enclosed keep to the side 408 single groove line 411 forbids that air passes through from it.

409 places that keep to the side provide sealant, here are the forms with sealing strip 414.Sealing strip 414 keeps to the side 409, generally forbids the fluid of groove line 415 by filtered.Sealing strip 414 is applied to medium 401 usually around the situation of self reeling, and makes corrugated sheet 403 towards the inboard.Therefore, sealing strip 414 can form sealing between the side 418 of the dorsal part 417 of surficial sheets 404 and corrugated sheet 403.When it be applied in bar 401 coilings around the medium bag time, sealing strip 414 is known as " coiling sealing strip " sometimes.If medium 401 is cut slivering and stacked, but not reel, sealing strip 414 is exactly " a stacked sealing strip ".

Referring to Figure 26,, for example, just can operate in the following manner by coiling or stacked in case medium 401 is integrated into the medium bag.At first, air enters close terminal 409 open slot line 411 along the direction of arrow 412.Because terminal 408 sealed limit 410 sealings, air can pass through medium along direction shown in the arrow 413.Air leaves the medium bag by the openend 415a of the groove line 415 of close medium bag end 408 subsequently.Certainly, operation can be carried out along opposite airflow direction.The air stream of filtered seals the medium bag to passing therebetween.

For the concrete structure shown in Figure 26, parallel ripple 407a, 407b 408 409 are straight along whole medium to the edge from the edge substantially.Straight trough line or ripple can be in selected position distortion or folding, especially endways.The change that is used for closed slots line end is left in the basket in the definition of " bending " and " wave mode " generally in above-mentioned " rule ".

Do not adopt directly, the Z-filtration device structure of wave mode ripple (groove line) shape that rule is crooked is known.For example, at the U.S.5 of Yamada etc., illustrated in 562,825 and adopted the ripple pattern (see Fig. 1 and 3 of 5,562,825) of some semicircular (cross section) inlet slot line near narrow V-arrangement (having curved side) outlet slot line.U.S.5 at Matsumoto etc., 049, in No. 326 patents, show circle (cross section) or tubular channel line, it is connected to another sheet material with semicanal by a sheet material with semicanal and forms, resulting parallel, has flat area between the straight trough line, referring to Fig. 2 of Matsumoto ' 326.U.S.4 at Ishii etc. among 925,561 (Fig. 1), shows and is folded into the groove line with square-section, and wherein said groove line is tapered along its length.In WO 97/40918 (Fig. 1), show and have crooked wave mode (from adjacent bend relief and recessed groove), but along its length be tapered the groove line or the parallel ripple of (and not being straight therefore).In addition, in WO 97/40918, show and have crooked wave mode, but have the crest of different size and the groove line of trough.

Generally, filter medium is quite flexible material, is generally non-woven fiber material (cellulose fibre, synthetic fibers or the two), often comprises resin in it, handles with other materials sometimes.Therefore, it can or be arranged to different ripple patterns by shaping, and does not have unacceptable media damage.In addition, it can be reeled easily or otherwise be shaped so that use, and does not have unacceptable media damage equally.Certainly, it must keep the character of required ripple struction during use.

In described ripple processing technology, cause medium that inelastic deformation has taken place.This has prevented that medium recovery is to its original shape.But, in case remove tension force, groove line or ripple tend to bounce-back, stretching that a recovered part has taken place and bending.Surficial sheets is attached on the groove line sheet material sometimes, to stop this bounce-back of corrugated sheet.

In addition, medium contains resin usually.In the corrugation process, medium can be heated to glass transition point above resin.When resin cooled off subsequently, it can help to keep groove line shape.

Corrugated sheet 403, surficial sheets 404 or the two medium can provide the fine fibre material at its one or both sides, for example, and referring to U.S.6,673,136, be incorporated into this paper at this.

A problem of relevant z-filtration relates to the single groove line end of sealing.Usually provide sealant or binder, to realize described sealing.From above discussion as can be seen, in common z-filter medium, especially adopt the straight trough line but not in the filter medium of cone tank line, need all have big encapsulant surface long-pending (and volume) at upstream extremity and downstream.Is vital in the high quality seal of these positions for the operate as normal of formed dielectric structure.High sealing agent volume and area produce associated problem.

Referring to Figure 27, wherein show and adopt rule, the crooked wave mode corrugated sheet 443 and the z-filter media construction 440 of non-corrugated surface sheet material 444.The zone 452 of distance D 1 below given corrugated groove line 453 between the point 450 and 451 formed the extension of surface dielectric 444.The length D2 of the arc medium of corrugated groove line 453, yes on identical distance D 1 greater than D1, and this is because the shape of corrugated groove line 453 causes.For the medium that is used in the common regular shape in the application of groove schlieren filter device, the lineal measure D2 of medium 453 between point 450 and 451 generally is at least 1.2 times of D1.Usually, D2 comprises endpoint value in the 1.2-2.0 of D1 scope doubly.A kind of common especially structure of air cleaner has such structure, and wherein D2 is approximately 1.25-1.35 * D1.For example, this medium is applied in Donaldson Powercore by commerce ^TMOn the Z-filtration device structure.Here, the ratio of D2/D1 is characterized as being the groove line/flatness ratio or the medium draftability of corrugated (groove line shape) medium sometimes.

In the corrugated cardboard industry, various standard cell lines had been defined already.For example, standard E groove line, standard x groove line, standard B groove line, standard C groove line and standard A groove line.Accompanying drawing 28 combines with following Table A, and the definition to these groove lines is provided.

Donaldson Company, Inc (DCI), assignee of the present invention, the version with standard A and standard B groove line is used on the multiple z-filtration device structure.These groove lines define in Table A and Figure 28 equally.

Table A (the groove line definition of Figure 28) DCI A groove line: groove line/plane=1.52: 1; (R) is as follows for radius: R1000=.0675 inch (1.715mm); R1001=.0581 inch (1.476mm); R1002=.0575 inch (1.461mm); R1003=.0681 inch (1.730mm); DCI B groove line: groove line/plane=1.32: 1; (R) is as follows for radius: R1004=.0600 inch (1.524mm); R1005=.0520 inch (1.321mm); R1006=.0500 inch (1.270mm); R1007=.0620 inch (1.575mm) standard E groove line: groove line/plane=1.24: 1; (R) is as follows for radius: R1008=.0200 inch (.508mm); R1009=.0300 inch (.762mm); R1010=.0100 inch (.254mm); R1011=.0400 inch (1.016mm); Standard x groove line: groove line/plane=1.29: 1; (R) is as follows for radius: R1012=.0250 inch (.635mm); R1013=.0150 inch (.381mm); Standard B groove line: groove line/plane=1.29: 1; (R) is as follows for radius: R1014=.0410 inch (1.041mm); R1015=.0310 inch (.7874mm); R1016=.0310 inch (.7874mm); Standard C groove line: groove line/plane=1.46: 1; (R) is as follows for radius: R1017=.0720 inch (1.829mm); R1018=.0620 inch (1.575mm); Standard A groove line: groove line/plane=1.53: 1; (R) is as follows for radius: R1019=.0720 inch (1.829mm); R1020=.0620 inch (1.575mm).

Certainly, the groove line definition from other standards of corrugated box industry is known.

Generally, can be used for defining the bellows-shaped or the approximate bellows-shaped of corrugated medium from the standard cell line structure of corrugated box industry.Above-mentioned to the comparison between DCI A groove line and DCI B groove line and ripple industry standard A and the standard B groove line, shown the variation that some is common.

II. utilize the general introduction of groove line medium manufacturing coiling dielectric structure

In Figure 29, show the example of making corresponding to the manufacturing process of the medium strip of bar shown in Figure 26 401.Generally, surficial sheets 464 and groove line (ripple) sheet material 466 with groove line 468 are combined, to form medium net 469, the adhesive seal limit places 470 places therebetween.Adhesive seal limit 470 can form single face sealing strip 410, sees Figure 26.471 places carry out optional acupuncture processing in the position, are positioned at the middle central acupuncture part 472 of net with formation.Z-filter medium or Z-medium strip 474 can be cut or sever at 475 places along sealing strip 470, to form two parts 476 of z-filter medium 474,477, they have the edge separately, have sealant bar (single face sealing strip) to extend between corrugated sheet and surficial sheets.Certainly, if adopt optional acupuncture processing, the edge with sealant bar (single face sealing strip) also has the acupuncture of one group of groove line and locates at this.

The technology that is used to implement Figure 29 institute characterization can be referring to PCT WO 04/007054, and open day is on January 22nd, 2004, is incorporated into this paper at this.

Still referring to Figure 29, by acupuncture position 471 and finally before sever at 475 places, it must be shaped at z-filter medium 474.In schematic diagram illustrated in fig. 29, this is by allowing media sheet 492 realize by a pair of corrugation rolls 494,495.In schematic diagram illustrated in fig. 29, media sheet 492 is launched from roller 496, reels around jockey pulley 498, then by roll gap or occlusion portion 502 between the corrugation rolls 494,495.Corrugation rolls 494,495 has tooth 504, by after the roll gap 502, can produce the bellows-shaped that needs substantially in plane sheets 492.By after the roll gap 502, sheet material 492 becomes corrugated along machine direction, and is known as corrugated sheet at 466 places.Corrugated sheet 466 is fixed to surficial sheets 464 (in certain situation, ripple processing may relate to heats medium) then.

Still referring to Figure 29, described process also shows surficial sheets 464 and is sent to acupuncture Working position 471.Shown surficial sheets 464 is kept on the roller 506, is directed to corrugated sheet 466 then, to form Z-medium 474.By binder or other modes (for example sonic welded) corrugated sheet 466 and surficial sheets 464 are fixed together.

Referring to Figure 29, show adhesive line 470, as sealing strip, be used for corrugated sheet 466 and surficial sheets 464 are fixed together.In addition, 470a place shown in the sealing strip that is used to form the face seal limit can be applicable to.If sealant is applied to the 470a place, need on corrugation rolls 495, forms the gap, and may on corrugation rolls 494,495, form the gap simultaneously, to hold sealing strip 470a.

The ripple type that provides on corrugated media can be selected, and fixed by the ripple or the ripple tooth gauge of corrugation rolls 494,495.A kind of preferred ripple pattern is the crooked wave mode ripple of rule of straight trough line, as above-mentioned defined.The crooked wave mode of employed common rule is such wave mode, and wherein as hereinbefore defined distance D 2 is 1.2 times of above defined distance D 1 at least in the corrugated pattern.In a kind of preferable use, general D2=1.25-1.35 * D1.In certain situation, described technology can be applicable to crooked wave mode, and this wave mode is not " rule ", comprises, for example, does not use the wave mode of straight trough line.

As disclosed, method shown in Figure 29 can be used for forming central acupuncture part 472.Figure 30 shows acupuncture and cuts a groove line 468 afterwards with section form.

As can be seen, foldable structure 518 has formed acupuncture groove line 520, and it has four scrimp 521a, 521b, 521c, 521d.Foldable structure 518 comprises flat ground floor or the part 522 that is fixed on the surficial sheets 464.The shown second layer or part 524 are pressed on ground floor or the part 522.The second layer or part 524 preferred relative outer ends 526,527 by folding ground floor or part 522 form.

Still referring to Figure 30, two fold or scrimp 521a, and 521b is generally known as in this article, and " top, inside " folds or scrimp.In this article, term " top " expression scrimp is positioned at whole folding 520 top, when folding 520 when the direction of Figure 30 is seen.Term " inside " is meant such fact, i.e. each scrimp 521a, and the fold line of 521b or scrimp line are toward each other.

In Figure 30, scrimp 521c, 521d is generally known as " bottom, outside " scrimp.In this article, term " bottom " is meant such fact, i.e. scrimp 521c, 521d are not picture scrimp 521a, and 521b is positioned at the top like that when the direction of Figure 30 is seen.Term " outside " expression scrimp 521c, the fold line of 521d is opposing each other.

In this article, term " top " and " bottom " be meant specially when direction shown in Figure 30 is seen folding 520.In other words, they do not represent folding 520 in actual product uses towards direction.

According to above feature and referring to Figure 30, as can be seen, preferred regular foldable structure 518 shown in Figure 30 is such structure in the present invention, and it comprises at least two " top, inside scrimp ".These inside scrimps are unique, and help to provide general structure, the wherein folding obvious infringement that can not cause the adjacent slot line.

Can also see the 3rd layer or part 528 being pressed on the second layer or the part 524.The 3rd layer or part 528 inner 530,531 folding and form relatively by from the 3rd layer 528.

Another kind of mode of observing foldable structure 518 is referring to the alternately crest of corrugated sheet 466 and the geometry of trough.Ground floor or part 522 are formed by anti-phase crest.The second layer or part 524 corresponding bimodal (in the anti-phase back of described crest), it is folding forward, and folding near anti-phase crest at preferred structure.

Be used for providing optional acupuncture technology shown in Figure 30 at PCT WO04/007054 description to be arranged with optimal way, the document is incorporated into this paper at this.Be used to reel the technology of medium with coiling sealing strip at PCT application US 04/07927, the applying date is in 17 days March in 2004 description to be arranged, and the document is incorporated into this paper at this.

The techniques described herein are specially adapted to by reeling by corrugated sheet/surficial sheets combination, that is, and and " single face " bar, the resulting medium bag of the single sheet material of composition.Except by reel forming, described some technology can be applicable to the structure that formed by a plurality of single face bars.

Coiling medium pack arrangement can have the definition of multiple periphery periphery.In this article, term " periphery, periphery definition " with and version, be meant the outer peripheral shape of looking and forming from the arrival end or the port of export of medium bag.General shape is circular, described in PCT WO 04/007054 and PCT application US 04/07927.Other available shapes are Long Circles, and more oblong examples are oval.Generally, ellipse has the relative curved end that connects by a pair of opposite side.In some ellipses, opposite side also is crooked.In other ellipses, be known as run-track shapedly sometimes, opposite side generally is straight.Run-track shaped can referring to, for example, PCT WO 04/007054 and PCT application US 04/07927.

The another kind of mode of describing periphery or peripheral shape is along the periphery that forms perpendicular to the wireline reel direction of the volume cross section by the medium bag by definition.

The relative current moved end of medium bag or flow surface can have multiple different definition.In a lot of structures, described end generally is flat, and is perpendicular to one another.In other structures, described end face comprises taper, the step portion of coiling, and they are can be from the axial end of medium bag sidewall outwards axially outstanding and form; Perhaps, inwardly axially give prominence to and form from an end of medium bag sidewall.The example of described medium pack arrangement is referring to U.S. Provisional Application 60/578,482, and the applying date is on June 8th, 2004, and the document is incorporated into this paper at this.

The sealing of groove line (for example, from the single face sealing strip, coiling sealing strip or stacked sealing strip) can form by multiple material.In a plurality of documents of quote and be incorporated into this paper, hot melt or polyurethane sealing can be used for multiple use.The structure that these materials also can be used for this paper and characterized.

III. the example system of air cleaner and summary

Principle and structure that this paper is disclosed can be used in the multiple systems.A kind of concrete system is with Figure 18, and general reference numeral is 1 schematically illustrated.In Figure 18, schematically show equipment 2, as vehicle 2a, it has engine 3, and described engine 3 has the specified air stream requirement of some definition, for example in the 50cfm-2000cfm scope.Equipment 2 can, for example, comprise bus, highway truck, off-road vehicle, tractor, light-duty or Medium Truck, or marine transportation instrument such as motorboat.Engine 3 provides power by fuel combustion for equipment 2.In Figure 18, shown air stream is inhaled into engine 3 in air inlet zone 5.Optionally turbine 6 is shown in broken lines, and being used for optionally, actuating air enters engine 3.Shown turbine 6 is positioned at the downstream of air cleaner 10.Air cleaner 10 has filter element 12, and is illustrated in the air intake stream of engine 3.Generally, when work, air is inhaled into air cleaner 10 along direction shown in the arrow 14, and by filter element 12.After passing through air cleaner 10, selected particle and impurity are removed from air.The air that purifies flows into air inlet 5 in the downstream along arrow 16 then.From here, the air conductance is gone into engine 3.

In common air cleaner 10, filter element 12 is maintainable parts.In other words, filter core 12 can take out and change in air cleaner 10.This allows to stand covered in dust and impurity and when needing repairing when filter core 12, and filter core 12 remainder of air cleaner 10 relatively also more brings by taking-up and keeps in repair.

Now referring to Fig. 1, it shows air cleaner or air cleaner assembly 20 with the form of perspective view, can be used as air cleaner shown in Figure 180 10.Referring to Fig. 1, air cleaner 20 comprises shell 21, and it has formed: arrival end 22; Intake section 24, here it comprises coarse filter part 25; Central authorities' (here being that main filter element holds) part 27; With exit portion 28.By following further specifying as can be seen, for shown concrete air cleaner 20, intake section 24 is provided in assembly process and is fixed to middle body 27 along two different selected of locating; With, exit portion 28 also is configured to be fixed to middle body 27 along selected one of two different location.In addition, by using the structure of this module type, other intake sections can be installed on the middle body 27 of same type.These features make and multiple other structures can be used on the air cleaner assembly 20, make advantage outstanding, as discussing in conjunction with Figure 16 A-X.

Air filter housing 21 also is included in the mounting structure 31 on its exterior section.Mounting structure 31 comprises a plurality of installation pads 32, (also referring to Fig. 4) it can with the device framework structural engagement.Shown installation pad 32 is selectivity location, to allow multiple different mounting structure, as discussed below.Shown specific mounting structure 31 is known as " box-like U-shaped " mounting structure 31a sometimes, or three side mounting structure 31a, as discussed below.

Although other schemes are feasible, for shown concrete air cleaner 20, mounting structure 31 is installed on central authorities' (here being that main filter element holds) part 27, and as the integral part of middle body 27.In this article, " one " expression parts are generally not separated from one another.Usually structure relates to mounting structure 31 molded with plastics as the part of the remainder of main filter element holding portion 27.In other words, although the feature that this paper characterized can be used on the metal-air filter, shell 21 comprises plastics in common structure, has various molded parts.Certainly in other structures, can provide the mounting portion at intake section 24 and/or exit portion 28, but shown structure 20 is favourable for some purposes, as disclosed below in conjunction with Figure 16 A-X.

Still referring to Fig. 1, air cleaner 20 comprises removable maintenance or access cover or panel 35.Removable access cover 35 makes it possible to optionally open the service ports (Fig. 2 and 3) of the inside 20a that leads to air cleaner 20, so that contact is installed in interior parts.Access cover 35 is fixing on the throne by latch structure 36, and referring to Fig. 1, here it comprises four wire catch 37 of crossing the center, respectively installs two on the opposite side 38,39 of shell 21.Access cover 35 place main filter element holding portion 27 a side (rather than terminal 27a, 27b), to operate by described mode hereinafter.

Usually, access cover 35 is set, so that provide service ports or opening in the central base position partly of box-like relatively U-shaped mounting structure 31a.The central base part is totally represented with 31d at Fig. 4.

Shown concrete access cover 35 comprises the central ledge 41 in it, the purpose of being discussed below can be used for.

Referring to Fig. 3, air cleaner 20 comprises main or primary filter filter core 43 and the optional secondary or safety element 45 that places in it.In common embodiment, primary filter filter core 43 and secondary or safety filter elements 45 size separately are configured to when remove access cover 35, and it can take out from shell 21 by import and export of resulting side or service openings.For shown concrete structure, secondary or safety element 45 can not take out, unless before taken out primary filter filter core 43.

Still referring to Fig. 3, primary filter filter core 43 preferably includes z-filter medium bag 50, and it has body seal structure 51 and grid 52 is fixed on it.Primary filter filter core 43 can according to, and according to the applying date be the disclosed principle assembling of U.S. Provisional Application 60/532,783 on December 22nd, 2003, the complete content of the document is incorporated into this paper at this.Figure 19 has illustrated a kind of example filter filter core 43 in 20 and 21, discusses hereinafter.

Generally, in this article, the medium bag 50:(a that term " z-filter medium bag " expression is shown in Figure 3) comprise structure with inlet face 54 and relative exit face 55; With, (b) medium bag 50 comprises a plurality of inlet slot lines and outlet slot line, is fixed to the z-filter medium that surficial sheets forms by groove line medium and forms.Generally, the inlet slot line is at inlet face 54 or near (close) inlet face 54 place's openings, and outlet flow surface 55 or near (close) outlet flow surface 55 places to the sealing of outlet moving air.In addition, outlet is flowed the groove line at inlet flow surface 54 or near (close) inlet flow surface 54 place's seal closures, and at outlet flow surface 55 or near (close) outlet flow surface 55 place's openings, so that air is discharged therefrom.Therefore, air must be by the medium of medium bag 50 after the inlet slot line that enters inlet flow surface 54, and it can leave medium bag 50 by the mobile groove line of outlet at outlet flow surface 55 places then.Entrance and exit groove line is made by groove line that is used for medium bag 50 or corrugated media sheet usually.The Z-filter medium is generally at PCT publication number WO 04/007054, and open day is on January 22nd, 2004 and PCT application 04/07927, and the applying date is in 17 days March in 2004 description to be arranged, and described document is incorporated into this paper at this respectively.The Z-filter medium is also above carrying out general explanation in conjunction with Figure 26-30, and briefly explains in conjunction with Figure 22 below.

Employed z-filter medium can form with several different methods, and shown concrete mode comprises winding-structure 50a, and it is fixed to the wall scroll z-filter medium that surficial sheets forms by corrugated sheet and forms, and surficial sheets is outwards reeled around self.Shown media roll is oval volume, particularly has two relative curved end 50b, the side 50d that 50c is relative with two, and the shape of 50e is referring to Figure 19-21.Shown concrete ellipse is run-track shaped, has relative side 50d, and 50e generally has straight middle body parallel to each other.

Be noted that except that ellipse other shapes also can be used for medium bag 50.For example, can use medium bag in other embodiments with circular cross-section.

Should also be noted that for shown structure face 54 and 55 is flat or plane substantially.Although expect that this structure is the common structure of air cleaner of the present invention, other structures also can be used.For example, face 54 and/or face 55 can be arranged to not to be the plane, but outwards (axially) or inwardly (axially) outstanding.

In this article, sometimes quote expression " axially " direction, or term " axially " or " axially " be used to characterize the direction of extension.In this article, term " axial " and version, be meant the bearing of trend that is parallel to main filter element 43 straight line of 55, perhaps similarly, be parallel to the bearing of trend of air cleaner 20 straight line of 28 from intake section 24 to exit portion from inlet face 54 to exit face.Term " radially " and version thereof generally are meant direction perpendicular to axial direction.

For shown structure, the body seal structure 51 of Figure 21 comprises radial seal 57, is here outwards supported by frame part 58.Radial seal part 57 comprises compressible polymeric material, as foamed polyurethane, be fixed on the frame part, and also frame part is sealed on the medium bag 50, generally according to U.S. Provisional Application 60/532,783, the applying date is that on December 22nd, 2003 is described, and the document is incorporated into this paper at this.

Grid 52 is preferred to become one with frame part 58, and is used for supporting outlet flow surface 55 and prevents distortion or damage.If desired, grid 52 and frame part 58 can comprise molded plastic components or preformed member.

Referring to Fig. 3, secondary or safety element 45 comprises outer skirt 65, and it has radial seal mounted thereto 66.Skirt 65 general ovalizes have two relative bent back ends and two opposed side edges.Preferably, described side has straight middle body, and is as mentioned below.Medium 67 places seal 66 inside, and it can fold if desired.Also have handle framework 69 on the secondary or safety element 45, be easy to the handling safety element.

Still referring to Fig. 3, comprise terminal ledge 70 on the safety element 45, its size is fit to fit into the receiving chamber 70a of shell end portion 28.Ledge 70 can be used for helping during installation positioning security element 45, by with safety element 45 as lever, combine cooperation with handle 69 manual, insert receiving chamber 70a.In other words, during installation, the maintenance personal catches safety element 45 by handle 69.Safety element 45 is to place like this, makes ledge 70 stretch into receiving chamber 70a.Then can be by manual control handle 69, rock or to push (using lever) safety element 45 in place.

Referring to Fig. 3 and 4, note exit portion 28, it forms: receiving chamber 70a (Fig. 3), step 71; Sidewall 72; End wall 73; With, outlet 74 (Fig. 3).Step 71 is parts of exit portion 28 contiguous center master filter element holding portions 27.The surperficial 71a of the inner radial of step 71 (ring-type) provides the sealing surfaces, particularly radial seal surface of body seal structure 51.The part 71b of step 71 provides the inlet stop surface of the terminal 51a of body seal structure 51.Therefore, for shown assembly 20, although main filter element 43 is installed in the middle body 27, filter core 43 is by the sealing of the joint between the part 71a of body seal structure 51 and exit portion 28.This structure is favourable, because there is not the leakage problem between the part 27,28 of shell 21, because seal 51 is in this downstream, junction splice enclosure 21.

The inner surface 72a of sidewall 72 has formed sealing surfaces secondary or safety element 45, that is, and and the radial seal composition surface of radial seal 66.Length secondary or that safety element 45 inserts exit portion 28 is subjected to the restriction of framework 76 in exit portion 28.Therefore, although safety element 45 is installed by inserting middle body 27, in use, in fact it be installed in the exit portion 28.

The outlet 74 of Fig. 3 is the outlets of flowing, and is used to eject from air cleaner 20 filtered air.For shown concrete structure, outlet 74 is preferred not in the central authorities of end wall 73, but is positioned at its a side 74a.Here, Fig. 3 middle outlet 74 is not centered at relevant exit portion 28 and is characterized as being " prejudicially " arrangement.In other words, referring to Fig. 3, outlet 74 is not in central authorities' (vertical direction) of part 28.On the contrary, outlet 74 is positioned at the more close terminal 74a of terminal relatively 74b place.

As can be seen from the above description, exit portion 28 shown in Figure 1 has relative curved end 28a, 28b, and they are by a pair of relative side 28c, and 28d connects.(in Fig. 1, lateral parts 28c is visible, and lateral parts 28d is mirror image normally).In common preferred structure, the middle body of side 28c and 28d is straight, and parallel to each other.

Still referring to Fig. 3, note coarse filter part 25.Coarse filter part 25 comprises outer wall 80, dust displacer mouth 81 and separator tube structure 83.The outer wall 80 of Fig. 1 generally has oval shaped perimeters, has relative curved end 80a, 80b and relative sidewall 80c, and 80d is referring to Fig. 1.For shown concrete preferred structure, the middle body of opposing sidewalls 80c and 80d is straight and parallel to each other.Be noted that part 80c is visible in Fig. 1, part 80d is mirror image normally.In shown structure, displacer mouth 81 is positioned on the curved end 80b, but other schemes are feasible.In usually using, exhaust system pipe is connected to dust displacer mouth 81, with from coarse filter 25 with the dust sucking-off shell 21 of discharging.In some structures, when not using gas extraction system, flexible evacuation valve can be installed on the 81a of hole.This valve is common in air filter arrangement, and for example, has just disclosed a kind of such structure among Fig. 4 of PCT publication number WO 03/084641 A2.

Separator tube structure 83 generally comprises a plurality of separator tubes 83, referring to Fig. 1, and 2 and 3.Described pipe generally is disclosed in, and for example, the applying date is the U.S. Provisional Application 60/556,133 on March 24th, 2004 and was that the complete content of above document is incorporated into this paper at this among the PCT publication number WO 03/084641 on October 16th, 2003 in open day.

Pipe 83 can use with multiple different quantity and direction.Generally, can select at the specific use occasion of expection.Referring to Fig. 2, generally manage 83 and be configured to: (a) by use inlet louver or fin 83a intake air by the time give its circumference momentum; (b) result drives the outside 83b of some particle to described pipe, and final by outlet 83c discharge pipe 83; With, (c) allow air to enter central discharge pipe 83d, enter primary air filter holding portion 27 then.

Referring to Fig. 1, coarse filter 25 comprises the end piece 25a that is fixed on the sidewall 80.Coarse filter 25 can assembling in advance before being connected to main filter element holding portion 27.Referring to Fig. 2, coarse filter 25 can be made two molded parts, comprises end piece 87 (or parts 25a), has fin 83a and pipe 83b on it; With main body 88, it has pipe 83d and sidewall 80 in it.Two parts 87,88 can be fixed together then, to form coarse filter 25.The assembly of this general type can be referring to, PCT publication number WO03/084641 for example, and the document is incorporated into this paper at this.

Be noted that intake section 24 comprises coarse filter 25 here, it has eccentric structure.Eccentric structure is positioned at terminal 80a by outlet 81, and one of 80b provides, referring to Fig. 1.In shown concrete coarse filter 25, also provide eccentric by managing 83 mounting means.From described off-centre as can be seen, coarse filter 25 can be installed in one of two position of rotation of relative part 27.Can understand consequent advantage by following discussion.

Referring to Fig. 3, air cleaner 20 comprises loading cam or the domatic structure 90 that inside holds.During main filter element 43 is installed (when removing lid 35), cam or domatic 90 is engaged during insertion, along the filter core of direction bias voltage shown in the arrow 95 45, promptly arrives sealing station.When access cover 35 fix in position subsequently, prevent that near the ledge 96 on the lid 35 of the end 98 of main filter element 43 filter element 43 from withdrawing from from the engagement state in sealing 51.In other words, ledge 96 helps to make filter core 43 lockings on the throne, so that proper operation.Similarly load cam or domatic structure 90, with the access cover structure that has ledge 96 on it, be disclosed among the U.S. Patent application US 03/14350, its publication number is WO 03/095068, open day is November 20 on the 2003rd, and its complete content is incorporated into this paper at this.

Usually, on each side 38,39 of shell 21 and in the bottom, provide domatic part 90.An only visible side among Fig. 3; Its opposite side is a mirror image.

At this paper, cam or domatic 90 is known as " static " cam or domatic 90 sometimes, because it is not mobile when work.On the contrary, it fixes on the throne in part 27, and during insertion portion 27 bias voltage filter core 43.If desired, static cam or domatic 90 be positioned at can bias voltage but not can with lid 35 interactional positions.This is illustrated in some preferred structures, the bias voltage of filter core 43 even took place before lid 35 is in place.

Can be incorporated into the filter element that discloses in the U.S. Provisional Application 60/532,783 of this paper at this and be used for filter element 43 being similar to.Described element generally has and is used for the permanent installing structure parts that combine with the domatic 90 end 50f at medium bag 50, referring to Fig. 3.But, for concrete assembly shown in Figure 3, preferable medium bag 50 does not comprise the described structure that places on the terminal 50f.But, the optional shell shown in air cleaner 20 comprises, band, or box parts 100, it is not to be permanently secured on the medium bag 50, as going through with the lower part.

IV. shell or box parts 100.

Referring to Fig. 3, shell or box parts 100 around and comprise medium bag 50.Box parts 100 are shown specifically in Fig. 5-7A.

Usually also preferred, shell 100 can separate with hand with medium bag 50.In this article, term " separates with hand " and represent that these two parts can separate under maintenance personal's manual operation, even allowing when changing filter element 43, casket 100 can be reused.Generally, in preferred structure, separating needed is axially two parts to be drawn back each other.This can be from understanding further going through of casket 100.

Referring to Fig. 7 A, box parts 100 comprise outer wall 104, form inner 104a, and it is set for and holds medium bag 50 within it, sees Fig. 3.

Outer wall 104 comprises opposing ends 107 and 108.In use, terminal 107 inlet face 54 places that are positioned near medium bag 50; With, in use, terminal 108 are positioned near body seal structure 51 places.Therefore, for common air stream, terminal 107 is arrival ends, and end 108 is ports of export.

Preferably, terminal 108 is openings, to allow to hold medium bag 50, by this end the medium bag is inserted inner 104a during use.

Shown concrete box structure 100 comprises the cell structure 110 that extends through end 107, and it comprises cross-member 111.During use, cross-member 111 forms inlet face 54 extensions of grid 110 near medium bag 50.Preferably, grid 110 is integrally formed with outer wall 104; In this article, term " integratedly " with and version be meant indissociable parts.Usually grid 110 and outer wall 104 for example by polyamide or polyolefin, form single molded plastic parts.Usually available material is nylon 6/6 or polypropylene.Described plastics can be that glass is filled.

The concrete structure of grid 110 can be selected, and can select according to design aesthstic or expression purposes source.For appropriate functional, it is terminal 107 that institute preferably is enough to extend through, when guaranteeing to use in this position the end support to medium bag 50, referring to Fig. 3.

At this paper, the end 107 of casket 100 is sometimes referred to seal, because grid 110 extends by it, inserts by it with any part that prevents medium bag 50 at assembly process.Be noted that terminal 107 and 108 all is opening for air stream.

Referring to Fig. 5, casket 100 generally has outer peripheral shape, comprises relative curved end 109a, the side 109c that 109b is relative with two, 109d.In shown common preferred structure, the middle body of side 109c and 109d is straight and parallel to each other.Be noted that curved end 109a comprises from its outwards outstanding structure, just as discussed below, at its middle body.

The outer wall 104 of Fig. 7 A comprises outer surface 114, has on it at interval, radially outward Tu Chu rib 115.Rib 115 is generally along opposite flank 114a, and 114b extends, and passes bottom 114c.Referring to Fig. 2, be positioned at side 114a, the suitable gap 117 that extends through of rib 115 preferred size of 114b is centrally placed in the enclosure 20a to help to support the medium bag 50 that holds.If desired, in fact rib 115 can big or small be adapted at the inner surface 116 of these engagement position walls 117.

A rib 115a who is noted that Fig. 7 A is positioned at arrival end 107.The casket 100 that has filter element 45 insert air filter housing 21 for the operating period between, settle this rib 115a with engagement cam or domatic 90, as discussed below.

Referring to Fig. 7, preferred outer wall 104 has the inner surface 104b that shrinks gradually to narrow end parts 121, the end portion 122 of the medium bag 50 of extruding Fig. 3 when its size is adapted at inserting therebetween.This helps in use at this position Supporting Media bag 50, and prevents to move at this fixed-site medium bag 50.Joint between casket 100 and the medium bag 50, only by in the position 121 extruding or pressurized realize, be convenient to manually medium bag 50 be inserted casket 100 and manually take out medium bag 50, therefore at separation and the joint realized during the maintenance activity between medium bag 50 and the casket 100.

Referring to Fig. 7, form the narrow end 121 that comprises transition shoulder 123, so that the inside 104a of sidewall 104 has the middle body 124 of first sectional dimension and the end portion 125 of close terminal 107 the second small cross sections size.Preferably, step 123, and the whole inwardly outstanding distance of part 125 relative part 124b is about 0.5mm-2mm, is typically about 1mm.Preferably, the size of part 125 is fit to have the compression (extruding) that is no more than 1.5mm near holding the medium bag around it.Preferably, part 125 endways on the axial length of the extension between 125a and the 125b extended distance be 5mm at least, 10mm at least usually, and in the scope of the 15-25mm that is everlasting.Here, part 125 sometimes is known as the medium bag and supports shoulder.It is continuous that shown concrete medium bag supports shoulder 125.But, shoulder 125 can comprise structure at interval, rather than on casket 100 continuous shoulder.

Whether also preferably, no matter continuous usually, support shoulder 125 and comprise: (Figure 20) outstanding part is with the engagement medium bag for 50c, 50b from relative curved end; With, from relative side (Figure 20) outstanding part is with the engagement medium bag for 50d, 50e, its radially the length of extension (that is, around the medium bag) distance is 15mm at least, preferably 30mm at least along each lateral parts engagement medium bag; With, radially the length of (arc) extension is 15mm at least along each bend end section engagement medium bag, preferably 30mm at least.In addition, preferably, shoulder 125 is continuous, and its continuous around engagement medium bag 50.Continuous result is, the amount of compressed media bag is identical around for it.

Generally, here, the medium bag supports shoulder 125 at the end of its opposite shell hermetically-sealed construction 51 radial support medium bag 50 releasedly, referring to Fig. 3.In addition, joint is such, and medium bag 50 can separate from casket 100 with hand with filter element 43, so that casket 100 can be reused.

In addition, in use,, when mounted medium bag 50 is supported on the terminal 50f, referring to Fig. 3 by supporting support that shoulder 125 provides relative curved end and opposite flank near medium bag 50.This expression medium bag 50 is to support near two opposing end faces 54 and 55,, in the time of when medium bag 50 is installed in shell 21 in, is supporting shoulder 125 places near terminal 54 that is, and at shell seal 51 places near end 55.This helps avoid and damages medium bag 50 when assembly 20 shakes in working order.

Should be noted that, if with above-mentioned optimal way structure, no matter whether continuous, shoulder 125 all can be along its four part engagement medium bags 50, these four parts comprise: terminal relatively 50b, 50c and opposite flank 50d, 50e, and thereby can be characterized as being 360 ° or four sides extruding or support, extruding or the power that supports from least four different directions towards the medium bag.Equally, this is known as 360 ° of supports of medium bag sometimes, and the four sides is supported, or has from least four different directions masterpieces and be used in the support that medium is wrapped.

Generally, preferably taper of step 123, and not sudden change so that help the medium bag is positioned at inner 104a, and do not damage the medium bag.In addition, usually part 124 downwards between regional 124a and 124b to shrink gradually to a certain degree, for example, with the angle in the 0.5-1.5 ° of scope.

Usually, the size of casket 100 is such, when the medium bag places in it, in use, the medium bag is near zone 121, and 124b or near terminal 124b endways, or space ends 124b is no more than about 1.5mm, is no more than the 0.5mm place usually near zone 124, is squeezed as mentioned above.

Endways 108, outer wall 104 can be arranged to some different modes.Concrete structure shown in Figure 7 comprises near end 108 having the outside enlarging or the flange 128 of step 129 in it.The size of step 129 and flange 128 is fit to form radial seal 57 on the part of periphery hermetic unit 130 that extension with the end 108 of outer wall 104 is provided at encapsulant 131, referring to Fig. 3.Periphery hermetic unit 130 generally comprises and radial seal part 57 all-in-one-piece sealant portion, and radial seal part 57 is sealed to medium bag 50.Preferably, zone 129 extends axially part in the scope of 5mm-25mm, common 10-20mm.

Referring to Fig. 7, the transition portion 129a between step 129 and the regional 124a provides the size that strengthens gradually in this position.

In other embodiments, replace and adopt step 129 and flange 128, the size of outer wall 104 is fit to like this, so that terminal 108 are axially stopping less than medium bag periphery hermetic unit 130 places or at medium bag periphery hermetic unit 130 places.

Still referring to Fig. 7, preferably, step 129 is configured to like this, so that the relative part 124a of inner surface 128a of flange 128 is provided with size, so that step 129 has the constant value of stepping out around its periphery from zone 104, scope is in 0.25-2.0mm.

The size of the end portion 107 of box parts 100 and position can engage it during installation and load cam or domatic 90, referring to Fig. 3.Therefore, in using usually, filter element 43 can be by being inserted the inside 104a of box parts 100 by end 108 in the position of air cleaner 20 outsides.The box parts 100 that filter element 43 is installed in it are fit into the inside 27a of (insertion) main filter cell holding portion 27 then by import and export, this moment, access cover 35 was removed.During installation, joint between box parts 100 and (static) loading cam or domatic 90 force box parts 100 and the main filter element 43 that is received along direction shown in the arrow 95 of Fig. 3, and enter loading position, main filter element 43 is sealed in the radial seal 57.Can settle access cover 35 then, make ledge 96 extend to a position, prevent that main filter element 43 and box parts 100 from retreating from loading and sealing station.

If desired, in some assemblies, access cover 35 can be fixed on the box parts 100, so that assembling.As required, this fixing can be nonvolatil or provisional.

At this paper, when mentioning filter element 43 or medium bag 50 inserted caskets 100, the axial length that must not represent 100% filter element 43 is in casket 100 inside.For example, shown in Fig. 2 and 3, the part of hermetically-sealed construction 51 is outwards outstanding from casket 100.For common preferred construction, medium bag 50 is contained in fully and extends axially in the casket 100, or at least 94% medium bag axial length (that is the length between the end face 54 and 55) is contained in.

Do not require that casket 100 is continuous, and do not expose the hole of lateral parts of medium bag 50 or other openings on sidewall 104.But, not having hole or opening to expose the structure of medium bag 50 lateral parts as shown in the figure, is preferred for the protection of medium bag.

Be noted that for the concrete structure shown in Fig. 7 A, box parts 100 are included in the outstanding structure 131 of curved end 132.Outstanding structure 131 comprises platform 131a (being flat) here, have it under receiving chamber 133 (preferably at both sides 133a, 133b), when operating, to make things convenient for grasping box parts 100.Referring to Fig. 3, the groove 41a that the ledge 41 on the access cover 35 forms in it is to receive outstanding structure 131.Preferably, the peripheral area (or external surface area) of platform 131a is at least 3600 square millimeters (sq.mm), usually 7000sq.mm at least.Preferably, receiving chamber 131 is so settled, so that user's finger can stretch into wherein along the axial direction perpendicular to medium bag 50.

Relatively large platform 131a is convenient to grasping, and helps to guarantee casket 100, and main filter element 43 is in case be in correct positioning after installing.Ledge 131 is fitted in the receiving chamber 41 on the access cover 35, help to guarantee after installing, to keep correct positioning.

Now referring to Fig. 8-14, the schematically illustrated work that is similar to structure shown in Fig. 1-7A.Be noted that some details among Fig. 8-14 is different, for example, access cover does not comprise the ledge on it, has inside receiving chamber, because filter element part does not comprise the ledge that is similar to outstanding structure 131.But, general, feature is similarly, therefore carries out correspondingly mark and explanation.

Referring to Fig. 8, schematically show air cleaner 20, it is assembled fully and seals.In Fig. 9 and 10, show and remove access cover 35.In Figure 10, illustrate and remove access cover 35 and also taken out box parts 100, because here box parts 100 are connected with access cover 35.Connection between shaft-cup 35 and the casket 100 can be nonvolatil, or snap fit movably.Connect if adopt, movably snap fit is normally preferred.In a further advantageous embodiment, as referring to Fig. 1, remove access cover 35 and can not take out box parts 100 simultaneously, because connecting each other, the two (is not noted that in Fig. 8 box parts 100 are schematically illustrated, that is, for example there are not rib and grid).

Referring to Figure 11, shown assembly 20 has fully access cover 35 and the box parts 100 that take out from the remainder of shell 21.In Figure 12, shown in main filter element 43 from box parts 100, taken out.In the remainder of shell 21, can see secondary or safety element 45.

Be noted that in Figure 12 shown safety element 45 is that it is inverted installation in position shown in Figure 3 relatively.In other words, the opposite end of safety element 45 makes progress, rather than shown in Figure 3.This expression other schemes in accordance with the principles of the present invention is feasible.

In Figure 13, shown air cleaner 20 is in the step of taking out secondary or safety element 45.In Figure 14, shown secondary or security filter 45 is taken out fully.

V., shell 21 is set, installs and be connected to other engine components to change.

Now referring to Figure 15.In Figure 15, case member comprises: intake section 24 (coarse filter part 25); Central authorities' (the primary air filter element holds) part 27; With, exit portion 28, separated from one another as shown in the figure.Usually, these parts of shell 21 are (promptly preformed) of assembling respectively, are fixed together then to form air cleaner 20, referring to Fig. 1.Described fixedly connected can be detachable connection, or separate once more to prevent described parts by ultrasonic bonding or similar techniques.Usually also preferably, parts or housing parts 24,27 and 28 are permanently secured in the assembly 20.

At this paper, some preferred parts such as intake section 24 (being coarse filter part 25) and exit portion 28 are known as " preform " or " preformed parts " sometimes respectively.In this article, term " preform " and its version are meant and are independent of the parts that middle body 27 forms, and then it are fixed on the middle body, to form air filter housing 21.

Referring to Figure 15, central primary air filter element holding portion 27 comprises upstream or ingress edge 27a and downstream or outlet edge 27b.Usually, inlet part 24 (coarse filter 25) is fixed on upstream edge 27a by welding (for example ultrasonic bonding) then with preformed plastic and assembling.Usually, exit portion 28 is by preformed plastic, and is fixed on the downstream edge 27b by welding (for example ultrasonic bonding).

This assembling mode makes exit portion 28 settle like this, makes outlet 74 near lid 35 (not illustrating among Figure 15) or away from lid 35 (as shown in figure 15).In addition, it allows to select to place coarse filter part 25 like this, makes dust displacer mouth 81 lid 35 dorsad, and is as shown in the figure, perhaps optional towards lid 35.This makes that adopting identical parts to carry out four kinds of different Overall Group's installings puts.Can use other settings of exit portion 28, and other settings of intake section 24, allow more feasibility.

Still referring to Figure 15, for shown in concrete assembly 20, perhaps among Fig. 1, intake section 24 (coarse filter 25) can be installed with two different turned positions, because this part 24 is asymmetric.Two kinds of directions among Figure 15 are to make outlet 81 downward or upward.Can be known as eccentric part here with the intake section 24 that two kinds of different turned positions are installed on the middle body 27, or have the parts of two different possibility installation directions.

Similarly, exit portion 28 is eccentric, is not arrangement placed in the middle because export 74.Therefore, part 28 may be installed the turned position with two on part 27: primary importance, and its middle outlet 74 is positioned at position as shown in figure 15; With, the second place, wherein part 28 is rotated 180 °, the vertical access cover 35 near Figure 15 in this position of part 74.

These possibilities can be preferred for providing the device on the equipment of being installed in, and these advantages relate to: be convenient to enter service cover so that maintenance; Suitably giving prominence to of dust displacer mouth; With, preferred orientation outlet 74, with other device engagement of system.This is for example shown in Figure 16 A-X, and these figure provide some but not every possibility.

The mounting structure 31 that is noted that above-mentioned air cleaner 20 is characterized as being preferably three mounting structure 31a in the above, or box-like-U-shaped structure 31a.This is because the mounting structure shown in Figure 16 A has three, comprises side 31b and 31c and extension bottom 31d therebetween relative, preferred parallel, side 31b, and the engagement angles between the 31c is usually perpendicular to bottom 31d.

Referring to Figure 15, usually when the box-like U-shaped mounting structure of three of uses, on middle body 27, access cover 35 is positioned at the opposite side of the center bottom 31d of mounting structure.This also illustrates at Fig. 1.

For example, Figure 16 A shows the structure of Figure 15, and it is installed on the center bottom or base portion 31d of mounting structure; Described equipment is installed by the surface or structural representation ground illustrates at A.Figure 16 B illustrates the similar installation of air filter housing part 27, and just exit portion 28 is inverted (or Figure 16 A Rotate 180 ° be installed on the part 27) relatively.Figure 16 C shows the structure that relative Fig. 1 is inverted installation.In order to realize structure shown in Figure 16 C, the assembly of Figure 15 is made like this, and coarse filter part 25 is inverted from position shown in Figure 15 or Rotate 180 °.In addition, lid 28 rotates 180 ° from position shown in Figure 15.

Figure 16 D illustrates with Figure 16 C and similarly installs, and just exit portion 28 relative Figure 16 C are inverted, and therefore, lid 35 illustrated in fig. 15 relatively is on the identical direction.

Figure 16 E illustrates the side and is installed on one of two sides of housing parts 27 (side 31c), and here, exit portion 28 and coarse filter part 25 are in equidirectional as Figure 16 A and 15.In Figure 16 F, show identical installation direction, just exit portion 28 is inverted.

Figure 16 G illustrates and is installed on the relative side (side 31b), and just exit portion 28 and coarse filter part 25 be towards as Figure 16 E, the same orientation shown in the 16A and 15.Figure 16 H illustrates the installation direction identical with Figure 16 G, and just exit portion 28 is inverted.

Figure 16 I illustrates main filter element holding portion 27 relative Figure 16 G and is inverted the air cleaner of installing, and the direction of exit portion 28 and coarse filter part 25 and Figure 16 C are similar.Figure 16 J illustrates the installation with the similar main filter element holding portion 27 of Figure 16 I, and just exit portion 28 is inverted.

Figure 16 K illustrates the assembly identical with the 16I structure with Figure 16 C, only is mounted on the side relative with 16I.Figure 16 L illustrates the assembly identical with the 16J direction with Figure 16 D, only is mounted on the side of the part 27 relative with Figure 16 J.

In Figure 16 A-L, installing generally is along " vertical " direction; In this article, term " vertical " represent that access cover 35 shown in Figure 1 faces upward or downward installation, perhaps in other words, make base 31d up or down.In Figure 16 M-X, show direction and replacement scheme that level is installed.When structure was characterized as being " level installation " or its version as described herein, expression lid 35 was neither upwards neither be downward, but along continuous straight runs.

Shown in Figure 16 M-16R, suppose that dust displacer mouth is connected to gas extraction system.When being this situation, outlet does not need downwards, because gas extraction system adopts pull of vacuum to remove dust by discharge pipe usually.

In Figure 16 M, component level is shown installs and non-perpendicular installation, but exit portion 28, the location of central main filter element 27 and coarse filter part 25 is similar to Figure 16 A.

Figure 16 N shows exit portion 28, and the location of coarse filter part 25 and main filter element part 27 is similar to the assembly of Figure 16 B, and different is that described component level is installed in the side.Figure 16 O illustrates the assembly that direction is similar to Figure 16 M, and different is to be suspended on the relative side; Illustrate and similar structure shown in Figure 16 N with Figure 16 P, different is to be suspended on the relative side.

Figure 16 Q illustrates the air cleaner that is provided with shown in Figure 16 D, different is that along continuous straight runs is installed.Figure 16 R is similar to Figure 16 Q, and different is that exit portion 28 has been rotated 180 °.

It also is feasible that Figure 16 S-X illustrates other structures, by replacing coarse filter part 25 shown in Figure 1 with coarse filter part 200.Employed coarse filter part 200 comprises the outlet ledge 201 that is positioned at one of side 140,141 shown in Figure 1, rather than one of endways.In addition, entrance separator pipe 83 can differently be settled.In other forms, described componentry can be identical with the embodiment shown in the earlier drawings.

Figure 16 T is similar to 16S, and different is that exit portion 28 has been rotated 180 °.Figure 16 U is similar to 16S, and different is that described structure is installed in the side.Figure 16 V is similar to 16U, and different is that part 28 has been rotated 180 °.Figure 16 W is similar to 16U, and different is mounted in relative side.Figure 16 X is similar to 16V, and different is to install to be suspended on relative side.

Be noted that in some systems, replace coarse filter, entrance structure can be installed on the edge 27a shown in Figure 15.Described entrance structure can be an inlet tube, but not coarse filter.

VI. other cap structures

Now, show another assembly 300 referring to Figure 17.It is different from assembly shown in Figure 1 20, because the ledge 301 on the access cover 302 is different structures, and inner container box (not shown) has similar ledge in its perimeter.Be noted that described ledge is crooked, have the axial protuberance of central authorities.

Referring to Fig. 3, be noted that ledge 131 and receiving chamber 41 help to guarantee that filter core 100 is in suitable position so that work when lid 35 installation in position and use assembly 20.The similar characteristics of assembly 300 can be worked in a similar fashion.

VII. elementary or main filter element 45.

In Figure 19-21, show filter core 43.Referring to Figure 19, filter core 43 comprises medium bag 50, is fixed with body seal structure 51 on it.Usually and preferably, body seal structure 51 comprises the zone of molded compressible seal material on the throne, described encapsulant for example is a polyurethane foam, has a zone and forms above-mentioned described radial seal.In Figure 19, described sealing area is represented with 51b.

Hermetically-sealed construction 51 also comprises the part of encapsulant 130, its engagement medium bag 50 and fixing seal structure 51.Preferably, zone 130 is integral with regional 51b; It is simultaneously molded in the resin pool to be them.

Referring to Figure 21, has ledge 58 on the shown grid 52.58 pairs of sealing areas 51 of ledge, especially radial seal zone 51b provides support.Preferably, grid 52 and support 58 integral with one anotherly and forms the end 55 that molded preform (with rigid material such as nylon or polypropylene is molded form) is fixed to medium bag 50, and seals by the zone 130 of encapsulant.

Only as an example, available filter core 43 has long size at curved end 50b between the 50c, be about 330mm, and at opposite flank 50d, has short size between the 50e, is about 203mm.The axial length of medium bag can be selected by required dust load capacity for given air filter arrangement.

Referring to Figure 21, be noted that at the port of export, are acupuncture closures with the 500 independent inlet slot lines that schematically show, as schematically showing with 501.This is a kind of optional mode of sealing, for example, is the PCT publication number WO 04/007054 on January 22nd, 2004 referring to disclosing day, is incorporated into this paper at this.Figure 21 also illustrates, and the encapsulant that forms body seal structure 57 and sealing area 130 also stretches into the outermost layer volume of medium or encloses 502 inside.Optional mode is disclosed in, and for example U.S. Provisional Application 60/532,783, is incorporated into this paper at this.

Dielectric material can be selected according to special-purpose and required level of efficiency.Medium can be used fine fibre on its one or more.Can use traditional material, or untapped material.

The general introduction of VIII.Z-filter medium

Carried out general explanation in conjunction with Figure 26-30 pair of Z-filter medium above.

Now referring to Figure 22.In Figure 22, the z-filter medium is totally represented with Reference numeral 300.In Figure 22, show and opposite example airflow direction shown in Figure 26, as example.Therefore, z-filter medium 300 generally comprises the groove line or corrugated sheet 301 is fixed on the surficial sheets 302, for example fixes by sealant or other modes.Surficial sheets 302 is can right and wrong undulatory, although it also can be undulatory in some cases, is the U.S. Provisional Application 60/543,804 on February 11st, 2004 referring to the applying date for example, and the document is incorporated into this paper at this.

Referring to Figure 22, medium 300 has opposing ends 305 and 306.Terminal 305 can be formed into actinal surface 54, see Fig. 3; And end 306 can form actinal surface 55, sees Fig. 3; But, opposite way is available, and sometimes is preferred.

Corrugated sheet 301 comprises: (a) a plurality of crests that replace 310 and trough 311; With, (b) opposing face 312 and 313.Generally, the trough 311 on the face 312 forms inlet slot line 311a, and air can enter wherein along terminal 305 by arrow 320 directions.On opposing face 313, crest 310 forms outlet slot line 310a, and it is endways 305 or near 325 place's closures of terminal 305 years old.Sealing 325 can form in many ways, comprises using sealant 325a folding or other structures.Air can not enter (or leaving) groove line end by sealant 325a sealing.

Near end 306, the groove line that is formed by trough 311 on face 312 is here sealed at 330 places by sealant 331.

Generally, medium strip 300a forms by corrugated sheet 301 and surficial sheets 302 are fixed to one another together, and then or cutting and stacked or be wound into the medium bag, medium bag shown in Figure 3 is that surficial sheets is outwards reeled.Air can enter inlet slot line 311a, but can not leave from end 306, unless it enters outlet slot line 310a (certainly, if air flows in opposite direction by medium 301, air 306 enters groove line 310a endways, and 305 leaves groove line 311a endways).

Generally, the z-filter medium can be characterized as being and comprise that corrugated groove line sheet material is fixed on the surficial sheets, and is configured to have a plurality of inlet slot lines and outlet slot line.The inlet slot line is an opening at the inlet face of structure, and in the exit face sealing, for example seals by sealant.Usually the outlet slot line is in the inlet face sealing and at the exit face opening.Sealing can perhaps with the correlation surface spaced slightly, be depended on the character of the procedure of processing that is used to form structure near correlation surface.The z-filter medium of can reeling then perhaps is cut to bar and stacked, and this depends on structure equally.

IX. safety element, Figure 23-25.

Now, wherein show safety element 45 referring to Figure 23.Safety element 45 illustrates with perspective view in Figure 24.Referring to Figure 24, safety element 45 comprises preformed outer skirt 65, radial seal 66, terminal ledge 70, handle 69 and medium 45a.Medium 45a is preferably folding, by skirt 66 around, and extend through skirt 66 by pectination (folding partition) ledge 340 and fix on the throne.Skirt 66 generally has elliptical shape, has relative curved end 341,342 and relative side 344,345.

Referring to Figure 23 and 24, ledge 70 is placed in the middle a curved end 341 usually.Preferably, its width (extended distance between Figure 23 mid point C and the D) is at least 10mm, usually 20mm, for example 25-40mm at least.In addition, it preferably has the ledge distance, from skirt 64 radially outward, sees Figure 25, and (that is, along and terminal 342 opposite directions) is at least 5mm, usually 10mm at least.Referring to Figure 24, ledge 70 comprises rib 70b, is used for engaging with the groove 70a of Fig. 3.

Be noted that in Fig. 3 it is to install like this that safety element 45 is shown, and make handle 69 downward, and ledge 70 upwards.Assembly 20 can be arranged for opposite installation.

X. install and assemble method

By above explanation, generally provide by filtering element for air filter being fit into method in the air filter housing at the side of air cleaner service hatch opening.Described method generally comprises following steps: filtering element for air filter is inserted in the casket that is formed with inside, described filter element comprises the medium bag and is fixed on the body seal structure that medium is wrapped; Import and export insertion with passing through by the side, the described casket of axial bias is installed resulting filter element/cartridge component when described casket engages with the stationary cam part that is positioned at air filter housing.Preferred described method is carried out with defined filtering element for air filter medium bag, and has defined body seal.Most preferably, it is performed such, and the step that makes the medium bag insert described casket is included in the medium Bao Yiduan of the medium bag supporting construction extruding opposite shell hermetically-sealed construction in the casket, and described extruding is facing to the four sides of medium bag.

The method of assembling air cleaner assembly also is provided, has may further comprise the steps: on the exit portion that has the eccentric hollow tube of placing in it central housing parts with box-like U-shaped mounting structure fixed thereon; With with intake section, preferably include coarse filter with eccentric dust outlet of placing, be fixed on the central housing parts.Number of assembling steps also preferably includes filtering element for air filter is installed in step in the central housing parts, and described filtering element for air filter comprises described medium and described body seal structure.Preferably, described method comprises by employing and relates to the conventional method that filter core is inserted casket, and filtering element for air filter is installed in the shell, and resulting casket/filter element combination is installed then.

XI. modular construction

At this paper, shown preferred assembly is used to hold the medium bag with elliptic cross-section or neighboring.As ellipse noted earlier, its expression medium bag has at least two relative curved end (or side) and extends therebetween with a pair of relative side.The opposite flank can be straight as mentioned above, perhaps can be crooked.

The preferred structure that holds this equally also is used for housing parts and safety element.

Certainly other structures are feasible.For example, the medium bag can have circular configuration, and housing parts and installation elements can correspondingly have circular configuration, although other replacement schemes are feasible.

XII. the example air filter arrangement that has the two-stage structure: coarse filter; The side dress; Main filter cell; And safety filter elements.

A. the example of air cleaner, Figure 31-46.

Figure 31, the air cleaner assembly of above-mentioned any principle has been adopted in Reference numeral 600 expressions in 32.Referring to Figure 31, air cleaner 600 comprises shell 601.As hereinafter described, the inside of shell 501 accommodates filter element and security filter.

Shell 601 generally comprises center main 605, access cover 606, intake section 607 and exit portion 608.Shown intake section 607 comprises coarse filter part 609 on the air cleaner 600, and is totally described in conjunction with Fig. 1 and related description as mentioned.At 610 places, for coarse filter part 609 provides dust displacer or discharge pipe.Usually outlet 611 has previously described dust displacer valve, and perhaps it can be connected to blast pipe.When as discharge pipe, preferably when air cleaner assembly 600 was installed and used, its direction down.When having the blast pipe of suction, it also is downwards usually, although other schemes are feasible.

Exit portion 608 comprises the outlet opening 615 that non-central authorities are provided with, and is similar to situation mentioned above.

Preferably, module structure is used for shell 601.Therefore part 507 can be with any one installation of two kinds of direction of rotation.Although other schemes are feasible, in a single day to install usually, it can pass through hot melt, and welding or similar method of attachment are for good and all fixed on the throne.In addition, exit portion 608 can be installed with two kinds of position of rotation, and same usually by hot melt, welding or additive method are permanently installed.

In Figure 36, air cleaner 600 illustrates with exploded pictorial, and independent part 605,607 and 608, all is visible together with access cover 606.

Refer again to Figure 31 and 32,, access cover 606 suitably is fixed on base or the main body 605 by releasable latch 620.Can adopt multiple latch structure, show central metal silk latch as an example.

As can be seen, that central base part 605 has is box-like, U-shaped, three mounting structure 625 from Figure 31-35, so that it can install along different directions, illustrates and illustrates as general in preamble or other embodiment.

Be noted that in other embodiments as preamble disclosed (engaging other parts), coarse filter 607 can be provided with like this,, rather than stretch out from the terminal 607c of Figure 31 so that discharge pipe 611 stretches out from one of opposite flank 607b of Figure 32.This for example makes, when assembly 600 is installed with different directions, can make things convenient for and effectively dust discharge.

Usually, can provide one of two discharge pipe positions or another to part 607, one is sealed, although can provide two simultaneously in some cases.

Referring to Figure 31, exit portion 608 has two ledge 608a, and 608b oppositely extends along the narrow relatively curved end of part 608 each other.In inside, each ledge 608a, 608b is equipped with receiving chamber, is used for following purposes.

In common operation, filtered air to enter inlet 607 from face 630.Referring to Figure 33, as can be seen,, provide the arrival end of a plurality of whizzers or cyclone separator at face 630 places.

Filtered air leaves air cleaner 600 by exporting 615 at terminal relatively 631 places then.As can be seen from Figure 34, provide outlet 615 in part 608, together with pressure indicator 635.

Now referring to Figure 36, wherein air cleaner 600 illustrates with exploded perspective.In Figure 36, can see the componentry that following inside holds: main filter cell 640, safety element 641 and filter cell container box 642.

At first referring to safety element 641.Generally, safety element 641 is similar to the safety element 45 of Figure 24, except that following described.Specifically, ledge 645 is downward.Be noted that for the specific embodiment shown in Figure 36, exit portion 608 comprises groove 608b, so that safety element 641 is being fixed in the steps on the throne and ledge 645 can placed in it by grasping member 646.Certainly, safety element 641 can make ledge 645 extend into receiving chamber 608a towards opposite rotation installation site.By adopting two receiving chamber 608a, 608b, no matter part 608 is how to rotate installation, in ledge 645 can extend into, no matter down or up.

Filter element 640 with lateral elevational view, illustrates with perspective view with cutaway view with in Figure 41 in Figure 40 in Figure 39, generally comprises medium bag 650, here is coiling z-filter medium bag.The z-filter medium bag 650 of reeling generally is elliptic cross-section in an example shown, here is runway shape, has relative curved end (Figure 41) 650a, 650b and relative side 650c, 650d.Side 650c, 650d can be straight and be parallel, perhaps can slight curvature and toward each other.

Filter element 640 also comprises hermetically-sealed construction 653, and is directed here to form the outer radial sealing.As can be seen from Figure 40, hermetically-sealed construction 653 generally comprises and supports 655, has encapsulant 656 above it.This general method above is being illustrated in conjunction with Figure 19-21.

Referring to Figure 41, as can be seen, support 655 and comprise the grid member 656 that extends through therebetween.

Although other schemes are feasible, the filter element 650 that has in conjunction with Figure 39-41 and feature noted earlier suits for structure of the present invention.

Refer again to Figure 36, during use, the size of casket 642 is fit to filter element 640 is held within it, makes hermetically-sealed construction 653 outstanding from it.The combination of these two parts (being casket 642 and filter 640) is shown in Figure 45 and 46.The perspective view of Figure 45 shows the air outflow port end; With, the perspective view of Figure 46 shows air inflow end.

Referring to Figure 36, here casket 642 has near air inflow aperture end 660 places: the grid member 661 that extends through opening 662; With, a plurality of holes 663 of the sidewall by casket.In some applications, described casket is convenient to handle in these holes 663.

Referring to Figure 43, preferably, hole 663 is positioned at the stub area 664 near the casket 642 of arrival end 660.664 zones that preferably have less inside dimension, zone, the internal frame 664a of formation Figure 43 is used for 0 medium bag and engages, and is similar to zone shown in Figure 7 121.

Referring to Figure 44, preferred hole 663 is provided at the opposite side 642a of filter core 642,642b with form of straight lines.Here, the opposite end of straight line is slightly crooked on relative curved side.

Be noted that also to comprise handle arrangement 665 on the casket 642, be similar to the disclosed structure in front.In addition, comprise receiving chamber 666 in the lid 606, to hold handle 665, as indicated above equally.

Referring to Figure 36, at terminal relatively 660 end 670 places, casket 642 comprises edge 671, has two middle bodies in it, and first is represented with 673, can't see in Figure 36 for second, still is positioned at the relative part at edge 671 with the mirror image form.Part 673 is some flexible short and small protuberance, and 671 remainder separates from the edge by part or sept 674,675.

In Figure 43, casket 642 illustrates with cutaway view, and opposite side is a mirror image.In Figure 43, has tooth 678 on the short and small protuberance 673.Tooth 678 is preferably barb-shaped, has towards the edge 679 and is contracted to narrow point.

Referring to Figure 36, in use, when filter core 640 by terminal 670 inside that are pushed into casket 642, when running into hermetically-sealed construction 653, tooth 678 can embed or catch part hermetically-sealed construction 653, and filter core 640 and casket 642 are fixed together.Generally, can select the size of barb, under the pressure of hand, break away from so that allow.

For the concrete casket 642 that goes out shown in Figure 44, provide many rows in every side of casket, four row's barb or teeth here are provided.Can adopt other quantity.

The part encapsulant of part encapsulant, particularly overwrite media bag that the position of tooth or barb preferably can be wrapped in conjunction with the medium that does not relate to the sealing air filter housing.At the material of this position polymeric material preferably, its enough softness so that barb fully insert and catch.The above-mentioned polyurethane material type that is used for sealing area is the examples of materials that is fit to this purposes.

When twisting force on described casket, when hermetically-sealed construction of wrapping with manipulation medium and shell formed sealing and remove sealing, described tooth trended towards embedding or catching encapsulant, is beneficial to the joint and the operation of medium bag.On the other hand, when stopping to twist,, no longer embed encapsulant as long as the size of described tooth generally can stop manual separation.The shape of described tooth and size preferably when taking place to engage, can not cause expendable damage to encapsulant.Preferred encapsulant type as herein described, together with shown in the toothing type and shown in relative dimensions, be the example of appropriate configuration.

Shown preferred tooth 678 is set up and is oriented to unidirectional barb.In this article, term " unidirectional barb " expression is when along a direction pulling, and described tooth tends to embedded part hermetically-sealed construction 653 (not covering the part of can), but when along other direction promotion or pulling, described tooth is tending towards unclamping.Tooth 678 is such orientation preferably, makes that they tend to embedding when hermetically-sealed construction 653 breaks away from sealed engagement with air filter housing.This helps removing as required the sealing of filter core 640 and shell.Available at least one toothrow, preferred at least three toothrows that use.The preferred point of described tooth has this central axial line perpendicular to casket of a side group, and opposite side and this axis bevel.

When unidirectional overhead structure is used for tooth 678, be straight from the release of casket 642 with filter core 640.The needed just pressure of hand.

Hole 663 is easy to carry by the resulting assembly of combination of casket 642 and filter core 640.But, also be convenient to work in a different manner in hole 663.Specifically, in some other embodiment, part 507 is detachable, provides service hatch with the inside to air cleaner, and does not use maintenance access cover 606.In this structure, filter core can load by end packs into, rather than the side dress.By this structure, hole 663 is convenient to casket 642 and filter core 640 are pulled out from the sealed engagement in the assembly.

In Figure 44, show the different sections of casket 642.On the opposite side 680,681 of casket 642, can see the barb-shaped tooth 678 on the marginal portion 671.

Referring to Figure 36, should be noted that, for shown in concrete structure, inner cam or domatic 690 are provided on base 605, with convenient casket 642 by opening (when the access cover 606 of Figure 31 is removed) when being pushed into, casket 642 is subjected to bias voltage and forms sealed engagement hermetically-sealed construction 653 is pushed into the sealing surfaces of shell 601, forms radial seal here and engages.This voltage biasing structure is above disclosing.

Still referring to Figure 36, lid 606 comprises relative flange 692,693.Fluted 696 between the middle body 695 of flange 692 and lid 606, it helps casket 642 and filter core 640 are remained on suitable location, prevents to withdraw from sealing, and is as discussed above.

Now, wherein show air cleaner assembly 700 referring to Figure 47.Air cleaner assembly 700 is similar to air cleaner 600 generally, and different is that middle body 705 and the size of access cover 706 between position X and Y are longer in the axial direction.Filter element with (relatively) length can be contained in the inside like this, for use in some purposes.Be noted that intake section 707 and exit portion 708 may be similar with part 607 and 608 respectively.

In Figure 48, illustrate air cleaner 700 with exploded pictorial.Can see the filter element 720 of big (longer) easily, and bigger casket 721, to hold filter core 720.

Now referring to Figure 49.In Figure 49, illustrate air cleaner 800 with exploded pictorial.Air cleaner 800 comprises base 805, access cover 806, intake section 807 and exit portion 808.Base 805 can be similar to base 605; With, access cover 806 is similar to access cover 606.But, shown concrete air cleaner 800 is configured to use the filter element 820 that has without casket.It can also be configured to not use coarse filter.Therefore, intake section 807 comprises air inflow aperture 825, but does not have the air separation pipe.In addition, air cleaner 800 is configured to element not safe in utilization.

Air cleaner such as air cleaner 800 may be needed in some long-distance transport, wherein estimates can not run into big amount of dust.

Still referring to Figure 49, filter core 820 comprises aforesaid z-filter medium bag 821, has aforesaid hermetically-sealed construction 823 on it.At arrival end 825 preformed ring 826 is installed, the short and small protuberance 827 on it extends on part flow surface 825.During installation when access cover 806 is removed, preformed ring 826 is positioned with engagement cam or domatic 830, sees Figure 50, with bias voltage filter core 820 to sealed engagement.In Figure 50, show air cleaner 800 with cutaway view, so that understand this joint.Be noted that ledge 835 on the access cover 806 helps to prevent that filter core 820 from withdrawing from from sealing state.Should also be noted that the receiving chamber 836 that does not use on the lid 806 here, but, its structure allows modular assembly to use the parts that also are suitable for having strainer configurations.

Be noted that part 807,808 can be preformed, and can be fixed on the middle body 805 if desired, and can have symmetry, to allow more than one installation direction.

Referring to Figure 50, be noted that to comprise mounting bracket 807a, 807b on the intake section 807.In addition, outlet 808 comprises mounting bracket 808a, 808b.Air cleaner 800 can (808a 808b) be installed on vehicle or other device systems for 807a, 807b by the support on the entrance and exit part 807,808; Perhaps, it can install on the throne by the U-shaped mounting structure on the middle body 805 870.Usually, install and to adopt one of above two kinds of options, but do not adopt both simultaneously.In some structure, can not use mounting bracket (807a, 807b, 808a, 808b).In other structures, can not use U-shaped mounting structure 870.

Be noted that and the support that is similar to the mounting bracket on intake section 807 and the exit portion 808 can be used on disclosed and other air filter arrangements that illustrate of this paper.

The example structure of following size Expressing constructed in accordance with the principles.Certainly use multiple size.For a lot of application, usually the groove line length of Long Circle medium bag is 140mm, for example 140-280mm at least.For a lot of such application, the longer portion size of Long Circle medium bag is at least about 300mm usually, 300-350mm for example, short being of a size of at least about 180mm, for example 180-220mm.Aspect ratio (longer cross-sectional length with than the ratio of cutting back face length degree) is generally at least 1.4.

The size of case member and box parts should be fit to handle such medium bag.

The size of medium bag, and the size of population of system generally can be selected according to required processing vehicle of air cleaner or equipment requirements of one's work.Principle as herein described can be used for the air cleaner of various sizes, comprises, for example, is configured for the air cleaner of operation contemplates air stream scope up to the equipment of about 1,100 cubic feet/min (about 31 cubic meters per minute).Generally, for any given size, air filter system is worked with the vacuum exhaust device, rather than is the dust discharge pipe, and this can adapt to higher air stream demand.

Generally, provide the method for the two kinds of big air stream of processing scales: come elongate structure with longer medium bag; With, increase overall perimeter size (medium bag section size).In certain situation, can adopt this two kinds of methods simultaneously.

B. the example of filter element shown in Figure 51-62 and air cleaner

The air cleaner assembly of above-mentioned any principle has been adopted in Reference numeral 1000 expressions among Figure 54-61.Air cleaner 1000 comprises shell 1001.What be contained in shell 1001 inside comprises filter element 1002 (Figure 51-53 and 55) and security filter 1003.

Shell 1001 generally comprises center main 1005, access cover 1004, intake section 1006 and exit portion 1007.Intake section 1006 comprises coarse filter part 1008, and is overall described with relevant explanation in conjunction with Fig. 1 as mentioned.At 1009 places, for coarse filter part 1008 provides dust displacer or discharge pipe.Usually, dust displacer 1009 has dust displacer valve mentioned above, and perhaps it is connected to blast pipe.

Exit portion 1007 comprises the outlet opening 1010 (Fig. 7) of non-central installation, is similar to those exit portion mentioned above.Can see security filter 1003 by outlet opening 1010.

Preferably, modular structure is used for shell 1001.Therefore, intake section 1006 can be by any one installation of two direction of rotation.In addition, exit portion 1007 can be in any one installation of two position of rotation, and usually by hot melt, welding or additive method are permanently installed.

Access cover 1004 is fixed on the throne on main body 1005 by releasable latch 101.Can adopt multiple latch structure, shown here crosses central metal silk latch as a kind of example.

In common operation, filtered air to enter the intake section 1006 of coarse filter part 1008.Can see that from Figure 55 coarse filter part 1008 has a plurality of whizzers or cyclone separator 1012.Filtered air is then by outlet 1007, and especially by hole 1010,1013 (Figure 55) discharge air cleaner 1000 in the opposite end.

Refer again to Figure 55, wherein show air cleaner 1000 with cutaway view.In Figure 55, can see the following inner componentry that is contained in: main filter element 1002 and safety filter elements 1003.

At first referring to safety filter elements 1003.Generally, safety element 1003 is similar to safety element 641 (Figure 36) and safety element 45 (Figure 24).

In Figure 51-53, can see filter element 1002.Filter element 1002 generally comprises medium bag 1014, here is the Z-filter medium bag of reeling.In shown example, the Z-filter medium bag 1014 of coiling generally is an elliptic cross-section, here is runway shape, has relative curved end 1015,1016 and opposite side 1017,1018.Side 1017,1018 can be straight and parallel, perhaps can be slight curving, and toward each other.

Filter element 1002 also comprises hermetically-sealed construction 1019, and is directed here to form outer radial seal 1020 (Figure 55).In Figure 53, can see that hermetically-sealed construction 1019 generally comprises support 1021, has encapsulant 1022 on it.This conventional method is in the above in conjunction with Figure 19-21 explanation.

In Figure 51 and 52, can see that supporting 1021 comprises the grid member 1023 that extends through therebetween.Grid member 1023 has superiority aspect the overall filtration device filter core 1002 preventing extrusion medium bag 1014 and further support.In addition, grid member 1023 is noticeable and attracting.For the assignee of this patent, Donaldson Company, Inc, this concrete grid member shown in Figure 51 and 52 also is that Donaldson Company, Inc is distinctive.

Still referring to Figure 51-53, filter element 1002 comprises casket or is with 1024, preferably as the permanent installation of the part of filter element 1002.Has the function that is similar to above-mentioned casket 642 with 1024.In the example of element shown in Figure 36, casket 642 can be removed from filter element 640.Here, preferred with 1024 as the permanent installation of the part of filter element 1002." permanent installation " is illustrated under the situation of the remainder that does not destroy filter element 1002, can not remove from the remainder of filter element 1002 with 1024.With 1024 around and near an end of filter element 1002, here be arrival end 1025.Be with 1024 to comprise outstanding structure, be presented as handle 1026, be similar to the aforesaid structure of this paper.In addition, lid 1004 comprises the receiving chamber 1027 that holds handle 1026, equally as previously described.Because handle 1026 is positioned at an end of filter element 1002 away from the end with hermetically-sealed construction 1019, the zone of filter element 1002 between hermetically-sealed construction 1019 and handle 1026 is lever arm 1031, helps when the maintenance air cleaner hermetically-sealed construction 1019 to be broken away from from engagement state.In the present embodiment, lever arm 1031 is than the lever arm length among the embodiment of front.Longer lever arm 1031 helps to remove filter element 1002 from air cleaner 1000.

From Figure 51 and 52 as can be seen, comprise at least two zones with 1024 with different in width.First width 1028 is the zones that form and hold handle 1026 with 1024.Second width regions 1029 is parts of not holding handle 1026 with 1024.From Figure 51 and 52 as can be seen, handle 1026 is positioned on the curved end 1016.Relative curved end 1016 has second width regions 1029.Side 1017,1018 has first width 1028 and second width 1029 simultaneously as its part.

In Figure 62, shownly be with 1024 to comprise grid 1030, for filter core 1002 provides further support.

By removing access cover 1004, operationally load filter element 1002 then, pack into filter element 1002 in the shell 1001 and from shell, unload, be similar to the explanation of front structure.

When work, filtered air to enter air cleaner 1000 by coarse filter 1008, then by filter element 1002,, and leave air cleaner 1000 by the hole 1010 of exit portion 1007 then then by security filter 1003.

Claims (8)

1. air cleaner assembly comprises:

(a) shell, it comprises: intake section; The main filter element holding portion of central authorities; And exit portion;

(i) have mounting structure on the main filter element holding portion of described central authorities, it has three can install the side;

Have the side access cover on the (ii) described main filter element holding portion, it places the position relative with the center of mounting structure to open service hatch; With

(iii) the central main filter element holding portion of described shell comprises the loading ramp structure, during filtering element for air filter is fit into shell, engage the domatic engagement end part of filtering element for air filter selectively, bias to the installation site to help described filtering element for air filter selectively; With

(b) filtering element for air filter comprises the medium bag that removably places in the main filter element holding portion of described central authorities;

(i) described medium bag has:

(A) inlet flows and holds and the relative mobile end of outlet;

(B) the mobile groove line of a plurality of inlets at the mobile end opening of described inlet, and is passing through therefrom near the mobile end of described outlet occluded air;

(C) the mobile groove line of a plurality of outlets is being held sealing near described inlet is mobile, and is being flowed opening at the mobile end of described outlet to exporting;

(D) elliptical cross-sectional shape;

(ii) radially the body seal structure is fixed on an end of described medium bag;

(iii) described filtering element for air filter also comprises band, and it forms inner, and has described medium bag and place in it;

(A) described band has domatic engagement end part; Described domatic engagement end partly is positioned at the end of described medium bag away from described body seal structure;

(1) described domatic engagement end part loading ramp structure of splice enclosure selectively during air cleaner is fit into shell; With,

(B) described band has outstanding structure, to be used for the described band of grasping during operation; With,

(iv) the size of described filtering element for air filter is fit to be fit to pass through service hatch when described side access cover is removed; With

(c) the side service cover removably is installed in the central main filter element holding portion between described intake section and the described exit portion;

(i) the interior receiving chamber that forms of described side service cover, the outstanding structure of described band stretches into therebetween.

2. according to the air cleaner assembly of claim 1, wherein:

(a) described intake section is preformed structure, and it is fixed on the central main filter element holding portion; With

(b) described exit portion is preformed structure, and it is fixed on the central main filter element holding portion.

3. according to the described air cleaner assembly of arbitrary claim in claim 1 and 2, wherein:

(a) described intake section comprises strainer configurations, and it comprises a plurality of dust separation organ pipes.

4. according to the described air cleaner assembly of arbitrary claim among the claim 1-2, wherein:

(a) described filter element forever is installed in described being with.

5. according to the described air cleaner assembly of arbitrary claim among the claim 1-2, wherein:

(a) described intake section has two relative curved end and two relative sides; With

(b) described exit portion has two relative curved end and two relative sides.

6. according to the described air cleaner assembly of arbitrary claim among the claim 1-2, wherein:

(a) described exit portion comprises the eccentric flow export that is provided with.

7. method that filtering element for air filter is fit into air filter housing by the side service hatch opening on air cleaner; Said method comprising the steps of:

(a) provide filtering element for air filter, it comprises the medium bag, is fixed on radially body seal structure and band that medium is wrapped;

(i) described medium bag has:

(A) inlet flows and holds and the relative mobile end of outlet;

(B) the mobile groove line of a plurality of inlets at the mobile end opening of described inlet, and is passing through therefrom near the mobile end of described outlet occluded air;

(C) the mobile groove line of a plurality of outlets is being held sealing near described inlet is mobile, and is being flowed opening at the mobile end of described outlet to exporting;

(D) elliptical cross-sectional shape;

(ii) described radially body seal structure is fixed to an end of described medium bag; With,

(iii) described band forms inside, and has described medium bag and place in it and forever be installed in the there;

(A) described band has domatic engagement end part, is used for engaging with the shell slope during filter element is fit into shell; Described domatic engagement end partly is positioned at the end of described medium bag away from described body seal structure;

(B) described band has outstanding structure, to be used for the described band of grasping during operation; Described outstanding structure and described body seal spacing structure are towards the end of described medium bag away from described body seal structure; With

(C) cross sectional shape of described band has two relative curved end and two opposed side edges; With,

(b) by inserting described filtering element for air filter is installed by the side service hatch opening on the described shell; Described shell comprises: intake section; The main filter element holding portion of central authorities; And exit portion;

(i) has the mounting structure that the side can be installed with three on the main filter element holding portion of described central authorities; With

Have the side access cover on the (ii) described main filter element holding portion, it places the position relative with the center of described mounting structure to open the side service hatch.

8. method according to claim 7, wherein:

(a) the described step that filtering element for air filter is provided comprises provides the filtering element for air filter that is fixed with band on it, and described band has outstanding structure, so that be used for the described band of grasping during operation; With

(b) described method also comprises, after installing, be oriented in above the described outstanding structure by the service cover orientation being covered on the service hatch opening of described side and with the receiving chamber in the service cover, and protrude and to hold described outstanding structure within it, seal described side service hatch opening.

Images