EP2613682A2

EP2613682A2 - Vacuum-cleaning apparatus with vacuum-cleaner unit and filter bag

Info

Publication number: EP2613682A2
Application number: EP11754303.3A
Authority: EP
Inventors: Jan Schultink; Ralf Sauer
Original assignee: Eurofilters Holding NV
Current assignee: Eurofilters Holding NV
Priority date: 2010-09-08
Filing date: 2011-09-05
Publication date: 2013-07-17
Anticipated expiration: 2031-09-05
Also published as: AU2011300869A1; EP2613682B1; CN103188977A; US9554681B2; PL2613682T3; EP2428151B1; DK2428151T3; JP2013539397A; EP2428151A1; ES2592941T3; CN103188977B; WO2012031734A2; PL2428151T3; DE102010046463A1; RU2578989C2; ES2604637T3; RU2013109769A; JP2015144847A; WO2012031734A3; DK2613682T3

Abstract

The invention relates to a vacuum-cleaning apparatus with a vacuum-cleaner unit and a filter bag, in which the filter bag is designed as a flat bag, as a nonwoven filter bag and as a disposable filter bag, and the vacuum-cleaner unit has a filter-bag-accommodating chamber with rigid walls, wherein the filter-bag-accommodating chamber has an opening which can be closed by a flap and has a predetermined opening surface area, through which the filter bag can be inserted into the filter-bag-accommodating chamber. The invention is distinguished in that the ratio between the surface area of a rectangle corresponding to the opening surface area and the surface area of the filter bag is greater than 0.70, preferably greater than 0.85, and highly preferably greater than 1.0.

Description

Device for vacuuming with vacuum cleaner and filter bag

Field of the invention

The invention relates to a device for vacuuming with a vacuum cleaner and a filter bag, in which the filter bag is formed as a flat bag, as a non-woven filter bag and disposable filter bag, and the vacuum cleaner has a filter bag receiving space with rigid walls, wherein the filter bag receiving space closable by a flap opening with a has predetermined opening area through which the filter bag is inserted into the filter bag receiving space. In addition, the invention relates to a filter bag and a method for inserting a filter bag in a filter bag receiving space of a vacuum cleaner.

State of the art

Filter bags in the form of non-woven disposable flat bags are the filter bags most commonly used today. The advantage of non-woven bags (compared to filter bags made of paper) is the significantly higher dust absorption capacity of the filter bag with higher separation efficiency and longer service life. The flat bag form is the most common form for nonwoven bags since bags of this shape are very easy to manufacture. Because in contrast to the paper filter material used in filter bags made of paper, nonwoven filter material is very difficult to permanently fold due to the high resilience, so that the production of more complex bag shapes, such as block bottom bag or other bottom bag forms, is very complicated and expensive.

A flat bag in the sense of the present invention is understood to mean filter bags which are formed from two individual layers of filter material with the same area such that the two individual layers are connected to one another only at their peripheral edges (the term same area does not exclude, of course, that the two individual layers differ from each other in that one of the layers has an entrance opening).

The connection of the individual layers can be realized by a weld or adhesive seam along the entire circumference of the two individual layers; but it can also be formed by a single layer of filter material is folded around one of its symmetry axes and the remaining open peripheral edges of the resulting two partial layers are welded or glued (so-called tubular bag).

A single layer of filter material per se may consist of one or more layers, which may be laminated, for example. Likewise, a single layer of folded filter material may be formed.

Flat bags in the sense of the present invention may also have so-called gussets. These side folds can be completely unfoldable. A flat bag with such gussets is shown, for example, in DE 20 2005 000 917 U1 (see FIG. 1 there with folded side folds and FIG. 3 with folded side folds). Alternatively, the gussets may be welded to portions of the peripheral edge. Such a flat bag is shown in DE 10 2008 006 769 A1 (see there in particular Fig. 1).

From the above definition of the term flat bag it follows inevitably that flat bags are 2-dimensional structures immediately after production, ie before use have an inner volume which is substantially equal to zero.

However, a filter bag having an internal volume that is substantially zero (before use) is not necessarily a flat bag in the sense of the present invention. For bag shapes that have a bottom, as shown for example in DE 20 2005 016 309 U1 or DE 20 2009 004 433 U1, are not flat bags, since they are not made of two individual layers with the same area, which are interconnected only at their peripheral edges , consist.

In view of the above definitions, it goes without saying that pouches which are already 3-dimensional structures after production and thus have a non-zero internal volume, as described, for example, in WO 00/00269 (see FIGS. 27 and 28) ) and DE 10 2007 060 748 (see there in particular Fig. 9) are shown, are not flat bags in the sense of the present invention.

A nonwoven filter bag in the sense of the present invention comprises a nonwoven filter material. The nonwoven material used may be a dry-laid or wet-laid nonwoven fabric or an extrusion nonwoven fabric, in particular a melt-spun microfiber spunbonded nonwoven fabric or spunbonded nonwoven spunbonded nonwoven fabric. There may also be additional nanofiber layers. The demarcation between wet-laid nonwovens, or nonwovens, and conventional wet laid paper is as shown below definition as used by EDANA (International Association Serving the Nonwovens and Related Industries). A conventional (filter) paper is therefore not a nonwoven.

The nonwoven fabric may comprise staple fibers or continuous fibers. Manufacturing technology can also provide several layers of staple fibers or continuous fibers, which are solidified to exactly one layer of nonwoven fabric.

The filter material may also be a laminate of a plurality of nonwoven fabric layers, such as filament spunbond fabric and meltblown nonwoven fabric (SMS, SMMS or SnxMS). Such a laminate may be laminated or calendered by means of a hot melt adhesive. The layer of meltblown nonwoven fabric may be creped.

The term "nonwoven" is used according to the definition according to ISO standard ISO 9092: 1988 or standard EN 29092. In particular, the terms nonwoven fabric or nonwoven and nonwoven fabric in the field of production of nonwovens are delimited and also as defined in the following For the production of a nonwoven fabric fibers and / or filaments are used.The loose or loose and still unconnected fibers and / or filaments are referred to as nonwoven or nonwoven fabric (Web) formed by a so-called non-woven binding step of such a nonwoven fabric Finally, a nonwoven fabric that has sufficient strength to be wound up into rolls, in other words, a nonwoven fabric becomes self-supporting by solidification. (Details on the use of the definitions and / or methods described herein can also be found in the standard paper Nonwovens ", W. Albrecht, H. F uchs, W. Kittelmann, Wiley-VCH, 2000.)

The nonwoven material may be present for a filter bag in the sense of the present invention as an unfolded layer or in turn have surface wrinkles. How such surface wrinkles can be formed results, for example, from European Patent Application 10163463.2.

The size of known from the prior art flat bags made of nonwoven depend on the application. A commonly used size of such filter bags for household vacuum cleaners have a length and a width of about 30 cm each and a height of about 1 cm. A conventional vacuum cleaner, in particular, a conventional vacuum cleaner apparatus in which filter bags of the above size are used, has a filter bag accommodating space whose length, width and height are each in the range between 10 cm and 20 cm.

The filter bag accommodating space according to the present invention is formed of rigid walls. For this purpose, the filter bag receiving space can be provided as an integral part of the housing or as a partial housing of the vacuum cleaner. No rigid walls in the sense of the invention have filter bag containment spaces consisting of a solid fabric known from the prior art in hand-held vacuum cleaners (see, for example, EP 0 161 790).

If one now inserts a conventional filter bag in a conventional vacuum cleaner, the above-mentioned proportions of filter bag and filter bag receiving space of the vacuum cleaner to the filter bag in the filter bag receiving space can not be fully deployed, but (in addition to the two superimposed individual layers) rather cover different areas of the superimposed individual layers or cover themselves areas of one or both of the individual layers themselves. The proportions also lead to the fact that the filter bag can not fully unfold even during operation of the vacuum cleaner. This effect is further enhanced by the fact that the filter bags are used in the folded state in the filter bag receiving space. (For example, if you pack five of the above-mentioned filter bags without folding them, you would now be given a package of about 30 cm χ 30cm ^χ 5cm, since such a package is totally unsuitable for the sale of filter bags, filter bags will always be folded before being placed in a suitable packaging for sale, the filter bags are then simply removed from the package and inserted in the vacuum cleaner device when folded into the filter bag containment space.)

This overlap of filter surface in conventional filter bags in conventional vacuum cleaner leads during suction to uneven utilization and filling of the filter bag. The properties inherent in the filter bag, such as dust absorption capacity, separation efficiency and service life, are thus not optimally utilized. In view of these disadvantages of the prior art, the present invention has the object to provide a combination between vacuum cleaner and filter bag, which better exploit the properties inherent in the filter bag, such as dust holding capacity, separation efficiency and service life.

Brief description of the invention

This object is achieved by a device for vacuuming of the type mentioned, which is characterized in that the ratio of the area of a rectangle corresponding to the opening area and the surface of the filter bag is greater than 0.70, preferably greater than 0.85, and most preferably greater than 1.0.

The area of the rectangle corresponding to the opening area is determined in the context of the present invention with the aid of the so-called minimally circumscribing rectangle, which is well known from image processing (see, for example, Tamara Ostwald, "Object Identification Using Regions Describing Characteristics in Hierarchically Partitioned Images"). , Aachener Schriften zur medizinische Informatik, Volume 04, 2005.)

For determining the area of the rectangle, it is to be distinguished whether the opening area is in one plane (two-dimensional opening area with two-dimensional edge) or the opening area is extending beyond one plane (three-dimensional opening area with three-dimensional edge).

In the case of a two-dimensional opening area, the area of the rectangle corresponding to the opening area is determined directly by the area of the minimally circumscribing rectangle of the two-dimensional edge of the opening area.

For a three-dimensional surface, before the surface of the rectangle can be identified with a circumscribing rectangle, the three-dimensional edge must first be transformed into a two-dimensional edge. For this, the edge is divided into N equal parts. By this division, N points P _n (n = 1,..., N) are set on the three-dimensional edge. Then, the center of gravity SP of this three-dimensional boundary is determined and the distance d "of each of the N points P _n to the center of gravity SP is determined. This results in a set of points in polar coordinates K _n (d _n ; (360xn / N) °). If one makes N very large, then from this point set a two-dimensional border corresponding to the three-dimensional edge dimensional border, for which a circumscribing rectangle can be determined. For transformation according to the present invention, N = 360 is set.

The area of the rectangle corresponding to the opening area represents a good and unambiguous approximation of the opening area of the vacuum cleaner device, which can be easily determined even with complex opening areas and opening edges.

The surface of a filter bag in the sense of the present invention is determined on the filter bag when it lies flat in a completely unfolded form, ie in a 2-dimensional form. In a filter bag with non-welded gussets, the gussets are fully unfolded to determine the area. On the other hand, if the filter bag has welded gussets, these are not taken into account when determining the area. For example, the area of a filter bag having a rectangular shape results from taking the filter bag out of its packaging, fully unfolding it, measuring its length and width, and multiplying them by one another.

If the opening area in relation to the surface of the filter bag satisfies this relation, then it is ensured that the filter bag can be introduced into the filter bag receiving space essentially completely unfolded. An overlap of the two individual layers or an overlap of one of the two individual layers with itself is thus avoided. It is from the beginning of the suction to (for this filter bag) the majority of the entire filter surface of the filter bag available and the filter properties of the filter bag, especially the achievable for the filter bag dust holding capacity with high separation efficiency and long life, are thus optimally utilized from the beginning.

The object underlying the invention is also achieved by a device of the type mentioned, in which the ratio of the receiving volume of the filter bag in the filter bag receiving space to the maximum receiving volume of the filter bag greater than 0.70, preferably greater than 0.75, most preferably greater than Is 0.8.

The receiving volume of the filter bag in the filter bag receiving space is determined according to the present invention according to EN 60312, Chapter 2.7.

The maximum receiving volume of the filter bag is determined according to the present invention analogous to EN 60312, Chapter 2.7. The only difference to EN 60312, chapter 2.7, is that the filter bag is freely suspended in a chamber, its volume at least so great that the filter bag is not prevented from fully expanding to its maximum possible size upon complete filling. For example, a cube-shaped chamber having an edge length equal to the root of the sum of the squares of maximum length and maximum width of the filter bag satisfies this requirement.

If the filter bag receiving space is designed such that the filter bag provided for it fulfills the above-mentioned conditions, then it is ensured that the entire filter surface of the filter bag is available during the entire suction operation (until the bag is changed) and thus the filter bag becomes of the operation is optimally filled. The filter properties of the filter bag, in particular the dust absorption capacity achievable for the filter bag with high separation efficiency and long service life, are thus optimally utilized until the filter bag is changed.

According to a preferred development, the two solutions discussed above can also be combined with each other. As a result, the advantages mentioned for both solutions are realized equally.

According to a preferred development of both of the solutions described above, moreover, the ratio of the surface of the filter bag receiving space and the surface of the filter bag may be greater than 0.90, preferably greater than 0.95, most preferably greater than 1.0.

The surface of the filter bag in the sense of the present invention is defined here as twice the area occupied by the filter bag when it lies flat in a completely unfolded form, ie in a 2-dimensional form. The area of the entrance opening and the area of the welds are not taken into account as they are comparatively small in relation to the actual filter area. Likewise, any foldings provided in the filter material itself (to increase the surface area of the filter material) are disregarded. The surface of a rectangular filter bag (as defined above) thus results simply from being taken out of its package, fully unfolded, measured its length and width, multiplied together and the result taken two times.

The surface of the filter bag receiving space in the sense of the present invention is defined as the surface that the filter bag receiving space would have if (if any) all the facilities (ribs, rib-shaped sections, stirrups, etc.) contained in the filter bag receptacle are provided so that the filter material of the filter bag remains away from the wall of the filter bag receiving space (which is necessary for a smooth filter material to ensure that any air can flow through the filter bag) are disregarded. The surface of a cuboid filter bag receiving space with ribs thus results as maximum length times maximum width times maximum height of the filter bag receiving space without taking into account the dimensions of the ribs.

Since the surface of the filter bag accommodating space enters the above relation only as a lower limit, in order to determine whether a particular vacuum cleaner in combination with the filter bag makes use of the previously discussed embodiment, especially if the filter bag containing space is of complicated geometrical shape, alternatively the surface of a parallelepiped Body can be determined, which completely encloses the filter bag receiving space; the surface of such a body is obtained, for example, if one determines the surface of a cuboid with the edge lengths which correspond to the maximum extent of the actual filter bag receiving space in the length, width and height direction (length, width and height directions are of course orthogonal to one another) ,

Are filter bag receiving space and provided for him filter bag designed so that the above condition is met, then both are particularly advantageous matched, so that the filter properties of the filter bag, especially the achievable for the filter bag dust holding capacity with high separation efficiency and long life, optimally utilized become.

According to a preferred embodiment of the present invention, the filter bag receiving space may be formed essentially of two curved surfaces. Alternatively, the filter bag accommodation space may also be formed of two curved surfaces and one side surface, the side surface connecting the two curved surfaces along the circumference of the curved surfaces. This development takes account of the fact that filter bags in the form of flat bags, which have a substantially rectangular shape, with free filling (ie in a filling in which the filter bag is not limited by a filter bag receiving space in its extension) so that they adopt a pillow shape. The two alternatives described represent an optimal adaptation of the filter bag receiving space to the filter bag. On the one hand, conditions are always present until the filter bag is completely filled, so that the dust absorption capacity achievable for the filter bag does not adversely affect the high separation efficiency and long service life. be flown. On the other hand, the requirement can be met that the dust filter receiving space can be made as small as possible in order to keep the overall dimensions of the vacuum cleaner as small as possible.

According to a further preferred development of the invention and all developments described above, the flat bag may also be diamond-shaped. In this way, in particular in connection with a filter bag receiving space having two curved surfaces (both in the case with and in the case without side surface), a greater flexibility can be achieved with respect to the width of the vacuum cleaner. Thus, a vacuum cleaner apparatus using diamond-shaped filter bags can be made less wide than a vacuum cleaner in which rectangular bags are used correspondingly (same fill volume). Such a diamond-shaped filter bag has substantially the same filling characteristics as a rectangular bag, that is, as has been described in the last paragraph. Incidentally, diamond-shaped filter bags and rectangular filter bags can be manufactured with the same amount of filter material for the same surface area.

Particularly advantageous with respect to the filling characteristics is a diamond shape with opposing angles in the range of 100 ° to 120 °. If these angles are, for example, 105 °, this results in a diamond shape with the angles 105 ° - 75 ° - 105 ° - 75 °.

According to a preferred embodiment of the present invention, including all the developments described above, the vacuum cleaner can be a vacuum cleaner. Vacuum cleaners in the sense of the present invention are vacuum cleaner devices in which filter bag receiving space and vacuum cleaner motor are provided in a housing (which can also consist of two interconnected sub-housings), to this housing a hose and / or a pipe (to which or a dust receiving device, such as a floor nozzle, a suction brush, a furniture brush or the like) are connected and in which this housing is provided on rollers, so that in the suction only primarily the hose and / or pipe and the corresponding dust receiving device must be moved and secondarily it will be much heavier. Since the weight of the components to be moved is minimized in such a vacuum cleaner devices, such vacuum cleaner devices are to operate with the least effort and therefore in households the most common devices in which the present invention can be advantageously used. The invention can also be used advantageously in a hand vacuum cleaner. According to another advantageous development, the surface of the filter bag accommodation space may comprise ribs and / or rib-shaped sections and / or stirrups, the filter bags consist of a filter material with a fold-shaped surface, and the height of the ribs and / or the rib-shaped sections and / or the stirrups is greater than that maximum fold height of the fold-shaped surface. As a result of this development, the filter bag receiving space is adapted to filter bags with surface folds, as are known, for example, from European patent application 10163463.2, in such a way that the surface folds can unfold completely and thus the maximum available filter area is impinged on in the suction mode.

According to an alternative development described in the last paragraph, the surface of the filter bag receiving space may be formed substantially smooth and the surface of the filter bag be profiled so that when placed in the vacuum cleaner filter bag most of the surface of the filter bag remains at a distance from the surface of the filter bag receiving space. Through this development, the filter bag receiving space can be produced in the simplest way. Committee in the manufacture of vacuum cleaner devices, which is formed by the fact that ribs, rib-shaped sections and straps are formed incorrectly, is thus avoided.

Advantageously, can be used in the development described in the last paragraph filter bag in which the profiling has wrinkles. In operation, only the tips of the pleats touch the walls of the filter bag containment space.

According to another embodiment of the present invention may be provided at least a portion of the wall of the filter bag receiving space a hole wall at a predetermined distance from the wall. With such a perforated wall, the same effect as with ribs, rib-shaped sections and ironing can be achieved. To provide such a perforated wall simplifies compared to ribs, rib-shaped sections and bracket the design effort.

If the filter bag accommodation space is formed by two curved surfaces (with or without side wall), then advantageously at least one of the curved surfaces, preferably the curved surface forming the bottom of the filter bag accommodation space, may have a hole wall at a predetermined distance. According to the present invention there is also provided a filter bag which can be used in a preferred manner in connection with the present invention.

This filter bag is a substantially rectangular or substantially diamond-shaped flat bag formed of nonwoven fabric and has an inlet opening such that the center of gravity of the area of the inlet opening has a shortest distance D _E o to one of the four corners of the filter bag and the center of gravity of the surface of the filter bag has a shortest distance D _FB to the same corner of the filter bag and meet _EE D and D _FB following relation: preferably D _E o <1/2 D _FB and most preferably D _E o <1/4 D _FB .

To determine the center of gravity of the surface of the filter bag is analogous to the determination of the surface, starting from the area that occupies the filter bag when it is flat on a base, so there is a 2-dimensional structure. If the filter bag has unwelded gussets, these are unfolded to determine the center of gravity. Welded gussets remain disregarded analogous to determining the area of the filter bag.

In the case of the diamond-shaped filter bag, it has been found that the filter bag with opposing angles in the range of 100 ° to 120 ° have a particularly advantageous filling characteristic.

In such a filter bag, the inlet opening is provided in one of the four corners of the filter bag (as opposed to the prior art rectangular flat bags in which the inlet opening is typically provided exactly in or near the center axis of the filter bag).

This results in particularly favorable flow conditions in the filter bag, which otherwise can only be achieved by additional so-called deflection devices, as are known, for example, from EP 1 787 560 A1 or EP 1 787 563 A1. These favorable flow conditions allow a uniform filling of the filter bag. A provision An additional deflection device as in the aforementioned prior art is thus unnecessary, whereby the production of the filter bag is simplified.

Incidentally, such filter bags can also be used in vacuum cleaner devices in which the filter bag receiving space is not adapted according to the invention to the bag. Even in such a case, the flow conditions can be improved over a rectangular filter bag in the form of a flat bag, without additional measures, such as deflection devices are required.

According to a preferred embodiment of the filter bag described above, this has a holding plate on which an open at existing suction flow and closed at not existing suction flow closure for the filter bag is arranged in the form of a flap. Appropriately, in this case, the closure is fastened with a hinge to the holding plate and the hinge is provided in the direction of the corner of the filter bag. Apart from the known from the prior art advantages of a self-opening and self-closing flap closure, which is secured to a support plate by means of a hinge (namely that the filter bag remains closed in idle mode and such a design in a particularly simple manner, for example by injection molding can), according to the invention, ie by the fact that the hinge points towards the corner of the filter bag, an optimal distribution of the air flow in the filter bag is achieved.

In addition, the invention provides a method of loading a filter bag into a filter bag containment space.

Brief description of the figures

In the figures show:

Fig. 1 is an oblique view of a first embodiment of the device for

Vacuuming according to the present invention, in which the filter bag receiving space is closed; an oblique view of the embodiment shown in Figure 1, in which the filter bag receiving space is opened, so as to see the inserted filter bag.

3 is a cross-sectional view of the filter bag containing space of a second embodiment of the vacuuming apparatus according to the present invention;

4 is a cross-sectional view of the filter bag accommodation space of a third embodiment of the vacuuming apparatus according to the present invention;

5 shows a cross-sectional view of a section of a wall of the filter bag receiving space with inserted filter bag according to a fourth embodiment of the device for vacuuming according to the present invention; and

6 is a cross-sectional view of a portion of a wall of the filter bag containing space with a filter bag loaded according to a fifth embodiment of the vacuuming apparatus according to the present invention.

Description of the preferred embodiments of the invention

The Figs. 1 and 2 show a first embodiment of a vacuuming apparatus according to the present invention, wherein in Fig. 1 the filter bag accommodating space is closed and in Fig. 2 the filter bag accommodating space is opened. In Fig. 2, the filter bag is visible.

The vacuum cleaner shown in Fig. 1 is a floor vacuum cleaner having a housing consisting of a first part 210 and a second part 220 connected thereto. The first part 210 in this case represents the filter bag receiving space. In the second part 220 is the engine of the vacuum cleaner. To the first part 210, a tube 211 is connected. As can be seen in FIG. 1 and in particular also in FIG. 2, the filter bag accommodation space is formed from a first curved surface 212a and a second curved surface 212b.

In Fig. 2 also a filter bag 230 can be seen. This filter bag has the inlet port 231 provided in one of its corners. The distance D _E o of the center of gravity of the inlet opening from the corner is in the illustrated embodiment about ^Λ Α the distance D _F B of Center of gravity of the filter bag from the corner. As a result, a particularly good flow distribution is achieved.

Further, in front of the inlet opening 231, a flap 233 is provided which opens itself by the suction flow and which self-closes when the suction flow is interrupted. This is provided on a holding plate 232, by means of which the filter bag is fixed in the filter bag receiving space.

In Fig. 2, a filter bag is inserted with dovetail-shaped surface folds in the filter bag receiving space.

In the following table, the ratio of the area of the rectangle corresponding to the opening area F _RE to the filter surface F _Fi iter. the ratio of the receiving volume of the filter bag in the receiving space V _AR to its maximum receiving volume V _Max and the ratio of the surface of the filter bag receiving space S _A R to the surface of the filter bag SFüter for in Figs. 1 and 2 shown embodiment according to the invention and for a representative of the prior art device for vacuuming indicated. The state-of-the-art device is the UltraOne ECO vacuum cleaner from AEG / Elektrolux with its associated S-Bag Ultra Long Perfume vacuum cleaner bag.

FRE / Fparriers VAR / V ₃ X SAR Spjiter

Prior art 0.46 0.59 0.69

Invention 1, 10 0.81 1, 05

Fig. 3 shows a cross section through the filter bag receiving space of a second embodiment of the present invention. The cross section here passes through the center of the filter bag receiving space along a first direction. Along a second direction orthogonal to the first direction, the cross section is similar to that shown in FIG. According to this embodiment, the filter bag accommodation space consists of two curved surfaces 400a and 400b.

Fig. 4 shows a cross section through the filter bag receiving space of a third embodiment of the present invention. According to this embodiment, the filter bag receptacle Meraum next to two curved surfaces 500a and 500b on a side surface 500c, which connects the two curved surfaces at their periphery.

The in FIGS. On the one hand, there are always conditions until the filter bag is completely filled, so that the dust absorption capacity achievable for the filter bag can be achieved with a high separation efficiency and a high filtration efficiency Service life can not be adversely affected. On the other hand, the requirement can be met that the dust filter receiving space can be made as small as possible in order to keep the overall dimensions of the vacuum cleaner as small as possible.

FIG. 5 shows a cross-sectional view of a section of a wall of the filter bag receiving space 610 with a filter bag 620 inserted according to a fourth embodiment of the vacuuming device according to the present invention. The wall 610 has ribs 61 1 in this embodiment. The filter bag 620 has so-called dovetail folds 621. The maximum fold height of the dovetail folds 621 (that is, the height when fully folded out) is less than the height of the ribs 61 1. As a result, the effective filter area can be greatly increased. This allows a highly efficient combination of vacuum cleaner and filter bag to be realized.

6, a cross-sectional view of a section of a wall of the filter bag receiving space 710 with a filter bag 720 inserted according to a fifth embodiment of the vacuuming device according to the present invention is shown. The surface of the wall of the filter bag accommodating space 710 is smooth. The surface of the filter bag 720 is profiled by standing folds, so that most of the surface of the filter bag remains at a distance from the surface of the filter bag receiving space. Also in this embodiment, the effective surface area of the filter material can be increased, which is also a highly efficient combination of vacuum cleaner and filter bag.

Claims

claims

Device for vacuuming with a vacuum cleaner and a filter bag, in which the filter bag is formed as a flat bag, as a non-woven filter bag and disposable filter bag, the vacuum cleaner has a filter bag receiving space with rigid walls, wherein the filter bag receiving space has a closable by a flap opening with a predetermined opening area, through in that the filter bag can be inserted into the filter bag receiving space, characterized in that the ratio of the area of a rectangle corresponding to the opening area and the surface of the filter bag is greater than 0.70, preferably greater than 0.85, and most preferably greater than 1.0 is.

Device for vacuuming with a vacuum cleaner and a filter bag, in which the filter bag is formed as a flat bag, as a non-woven filter bag and disposable filter bag, the vacuum cleaner has a filter bag receiving space with rigid walls, wherein the filter bag receiving space has a closable by a flap opening with a predetermined opening area, through in that the filter bag can be inserted into the filter bag receiving space, characterized in that the ratio of the receiving volume of the filter bag in the filter bag receiving space to the maximum receiving volume of the filter bag is greater than 0.70, preferably greater than 0.75, most preferably greater than 0.8.

3. Device according to claim 1 or 2, in which the ratio of the surface of the filter bag receiving space and the surface of the filter bag is greater than 0.90, preferably greater than 0.95, most preferably greater than 1, 0.

4. Device according to one of the preceding claims, in which the filter bag receiving space is formed essentially of two curved surfaces.

5. Device according to one of the preceding claims, in which the filter bag receiving space is formed of two curved surfaces and a side surface, wherein the side surface connects the two curved surfaces along the circumference of the curved surfaces.

6. Device according to one of the preceding claims, in which the flat bag is diamond-shaped.

7. Device according to claim 6, in which the diamond shape has two opposing angles in a range of 100 ° to 120 °.

8. Device according to one of the preceding claims, in which the vacuum cleaner device is a canister vacuum cleaner or a Handstaubsaugergerät.

9. Device according to one of the preceding claims, in which the surface of the filter bag receiving space comprises ribs and / or rib-shaped sections and / or straps and the filter bag consists of a filter material with a fold-shaped surface, wherein the height of the ribs and / or the rib-shaped sections and / / or the bow is greater than the maximum pleat height of the pleated surface.

10. Device according to one of the claims 1 to 8, in which the surface of the filter bag receiving space is substantially smooth and the surface of the filter bag is profiled such that when inserted into the vacuum cleaner filter bag most of the surface of the filter bag at a distance from the surface of the Filter bag receiving space remains.

1 1. Device according to claim 10, in which the profiling of the filter bag has folds.

12. Device according to one of the claims 1 to 8, in which at least a part of the wall of the filter bag receiving space is provided with a perforated wall at a predetermined distance from the wall.

13. Device according to claim 12 in combination with one of the claims 4 or 5, in which at least one of the curved surfaces a perforated wall is provided at a predetermined distance.

14. Filter bag, in particular for use in a device according to one of the preceding claims, which is a nonwoven formed substantially rectangular or a substantially diamond-shaped flat bag and having an inlet opening in which the center of gravity of the surface of the inlet opening a shortest distance D _E Ö To one of the four corners of the filter bag and the center of gravity of the surface of the filter bag has a shortest distance D _F B to the same corner of the filter bag is characterized in that D _E Ö and D _F B satisfy the following relation:

D _EÖ <2/3 D _FB , preferably D _E o <1/2 D _F B and most preferably D _E o <1/4 D _F B-

15. Filter bag according to claim 14, in which the diamond shape has two opposing angles in a range of 100 ° to 120 °.

16. Filter bag according to claim 14 or 15, with a holding plate, on which a self-opening at the onset of suction and automatically open at intermittent suction flow closing closure for the filter bag is arranged in the form of a flap.

17. Filter bag according to claim 16, in which the closure is fastened with a hinge to the holding plate and the hinge points in the direction of the corner of the filter bag.

18. A method of loading a filter bag formed as a flat bag, a nonwoven filter bag, and a disposable filter bag into the filter bag receiving space of a vacuum cleaner apparatus, wherein the filter bag receiving space comprises rigid walls, and wherein the filter bag receiving space has a flap-closed opening with a predetermined opening area the filter bag is inserted into the filter bag receiving space, characterized in that the filter bag is inserted in a fully unfolded form as a 2-dimensional structure in the filter bag receiving space.