EP3429449A1

EP3429449A1 - Suction device, suction bag holding device and method for operating a suction device

Info

Publication number: EP3429449A1
Application number: EP17708768.1A
Authority: EP
Inventors: Henning Hayn; Dawan Agu; Heiner Kühn; Michael Schechterle
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2016-03-15
Filing date: 2017-03-03
Publication date: 2019-01-23
Also published as: DE102016104787A1; CN108882813A; WO2017157696A1

Abstract

The invention relates to a suction device comprising a suction head (12) with a suction fan device (22), a suctioned material container (14) on which the suction head (12) is removably positioned with respect to the interior of the suctioned material container (14), and a holder (38) for holding a suction material bag (50), said holder (38) comprises a storage chamber (42) with a storage area (44) designed for accommodating one or more filter bags (48), suction material bags (50) being removed from the filter bag(s) (48).

Description

Suction device, suction bag holder and

Method for operating a suction device

The invention relates to a suction device comprising a suction head with a Sauggebläseeinrichtung, a Suction container, on which the suction head is removably positioned with respect to an interior of the suction container, and a holder for holding a Suction bag.

The invention further relates to a suction bag holding device for a suction device, wherein the suction device comprises a suction head with a Sauggebläseeinrichtung and a suction container. Furthermore, the invention relates to a method for operating a suction device.

A suction device, which is provided with a particularly air-impermeable suction bag, can be operated so that an operator has only minimal contact with suction material.

From DE 10 2008 062 601 AI a method for operating a vacuum cleaner with a suction fan and, leading to a dust filter bag suction or blast nozzle is known. A plurality of dust filter bags or a filter material is stored in the vacuum cleaner for forming a plurality of dust filter bags. With the removal of a filled dust filter bag, a feed back of filter material to form a further dust filter bag or a moving back of a dust filter bag can be triggered.

From DE 10 2005 053 632 AI a hand-held suction device for sucking suction material by means of a suction air flow is known. It is a Centrifugal separator provided for generating a curved path of the suction air flow.

From EP 1 485 004 B1 an apparatus for a vacuum cleaner is known, which has a Zentrifugalabscheiderkammer and arranged in connection with the Zentrifugalabscheiderkammer collecting container for the separated from the centrifugal separator particles. The collection container includes a dust bag for receiving dust particles. The sump forms part of a continuous flexible tube of air-impermeable material intended to form a plurality of sacks.

From WO 98/35602 a vacuum cleaner with a cyclone separator is known.

From EP 1 627 589 Bl a suction device is known, in whose dirt container a suction motor protrudes, in which a suspension device for disposal bag is arranged and which has an opening into it intake, wherein for pressure equalization for the disposal bag air passage openings between the insides and outsides a hinged disposal bag are provided.

From DE 89 07 219 U l a vacuum cleaner with a housed in a device housing collecting container for the suction material is known. The interior of the collecting container is flow connected to an intake manifold and is connected to a suction fan with upstream, at least partially projecting into the collecting container filter. The collecting container is formed at least at its filling opening as a fastening ring and provided with such, wherein the fastening ring is removably held on the device housing and one half of a dust-tight closure, the other half is located on the closure lid. From EP 1 283 170 B1 a film cassette is known.

From DE 10 2012 013 287 AI a method for contamination-free change of a filter cartridge in a vacuum cleaner is known.

The invention has for its object to provide a suction device of the type mentioned, in which a comfortable and low-dust disposal of suction material is realized. This object is achieved according to the invention in the suction device mentioned above in that the holder has a storage chamber with a reservoir, which is designed to receive one or more tubes, wherein from the hoses or the suction bag can be produced.

The hose is in particular provided as a type of endless hose. It can be closed in the region of one end in order to produce a suction bag, which can be filled with suction material. The filled soy bag can then be closed above the level of suction material and separated.

By the one or more hoses, which are held on the storage chamber in the storage space, a plurality of respective new sack bags can be produced by just a described closure is carried out at one end for producing a Suction bag and the described separation is performed. The corresponding suction bag can be made by pulling a hose portion of the storage room. By means of a suction bag held on the holder, areas of the suction device acted upon by an operator can be covered with suction material. It is also possible to produce a new suction bag without them Cover is interrupted. An operator then does not come into contact with suction material.

In the solution according to the invention, suction material (dust) can be completely enclosed. Suction-applied areas of the suction device can also be enclosed.

Collected suction material can be portioned easily via the suction bag.

In particular, the removable suction head can be completely removed from the suction material container or it remains fixed with the suction material container; For example, it can be removed by opening or pushing away and remains fixed via a hinge or a sliding guide with the suction container.

It is advantageous if at least one hose is arranged in the storage space, which is in particular folded. Thereby, a "suction bag precursor" is provided, from which (successive) a large amount of suction bags can be produced. The hose or hoses provide the suction bag walls. In particular, only a single suction bag is used in the operation of the suction device.

In particular, the hose or tubes has an air-tight wall or filter medium wall. In the case of an airtight wall, suction material and areas of the suction device that are charged with suction material can be airtightly covered or enclosed. In a filter medium wall, this forms a filter which is impermeable to suction material (but for example, is permeable to air). The filter medium can be adapted to the expected suction material.

In particular, the holder holds a suction bag in the interior of the suction container. As a result, the suction container can effectively serve as a protective wall for the bag. It results in a simpler compact construction of the corresponding suction device. Furthermore, a pressure equalization space can be provided in a simple manner in the suction material container in order to prevent suction of a suction material bag (in particular with an air-impermeable wall).

In particular, when arranged on the suction container suction head, the storage chamber is positioned in the suction material container. This results in a compact construction of the suction device. Furthermore, the risk of damage to a bag is minimized.

It is expedient for the holder to have an annular region on which the reservoir is arranged, the annular region closed (i.e., completely) surrounding at least one continuous annular opening which is in fluid communication with a suction port, even if a suction bag is held on the holder. Through the ring opening of the ring area through suction material can be coupled into a suction bag, which is held on the holder. The result is a compact construction of the suction device, which can be included in a simple way suction-leading portions of the suction device.

In particular, the at least one continuous annular opening is in fluid communication with an intake space on which the suction connection opening is arranged and / or the at least one continuous annular opening is in fluid-effective connection with a dirty side on a filter device associated with the suction fan device, even if one

Suction bag is held on the holder. In a simple manner, a region of the suction device which is acted upon by suction material can be covered or enclosed airtight by a suction bag held on the holder. It is advantageous if the reservoir has an annular cross section, wherein the annular cross section may correspond to that of a circular ring or may have a different shape than that of a circular ring. This makes it easy to produce a suction bag with which suction Include well-leading areas of the suction device, wherein the suction bag is filled with suction material.

It is particularly advantageous if the storage chamber has a continuous recess, which is in communication with a storage space and through which a hose region can be carried out. A suction bag, which is held on the holder, can be produced over the hose region that has been made. This bag is in connection with the hose in the storage room. As a result, for example, an airtight enclosure of suction material-leading regions of the suction device can be realized.

It is advantageous if the storage chamber is closed except for the continuous recess, in order to minimize in particular a suction material loading of the storage space.

It is also advantageous if the continuous recess annularly and in particular closed surrounds a continuous annular opening of the holder. This results in the advantages described above. The ring shape may correspond to that of a circular ring or the ring shape may also have a different shape than that of a circular ring.

It is favorable if the continuous recess is assigned a sealing device for sealing against the penetration of suction material into the storage space. This reduces the risk of contamination.

In one embodiment, the sealing device comprises one or more sealing elements which are arranged on the continuous recess and / or a positioning device is provided, by which one or more boundary walls of the continuous recess can be positioned (directly or indirectly) on a continuous hose region on the continuous recess are . If a sealing element is arranged on the through-cut recess, then this can act on a hose section that has been made and contact it, in particular by pressing or without pressing, in order to achieve a seal with a boundary wall of the through-cut recess. In a positioning device, a boundary wall of the continuous recess is positioned so that the corresponding gap, which forms the continuous recess, is reduced and, in particular, the boundary wall bears directly or indirectly (via an intermediate seal) against the hose region.

It is advantageous if, in a suction operation with a suction bag, this is held by the holder in the suction material container outside the storage space and is connected to a hose in the storage space. There are suction bag from the hose, which is a supply of bag for suction and is positioned in the storage room prepared. It can thus be achieved in a simple manner, a cover of suction-leading portions of the suction device.

In particular, the held suction bag on an interior, wel- is filled with suction material, and has an outer side, which faces a suction material container wall. An inside of the suction bag, which adjoins the interior, forms a dirty side of the suction bag. The outside forms a clean side of the suction bag. It is advantageous if the holder at least with a portion of the

Suction head is fixed. If the suction head is removed from the suction material container, then the holder including it attached suction bag is taken. The holder and the suction bag held thereon cover areas of the suction head (and the holder) which are exposed to suction material to the outside.

In one embodiment, the holder has a first part and a second part, wherein the first part and the second part (fluid-tight) detachably mit- connectable to each other and a portion of the first part and a portion of the second part form chamber walls for the pantry. By removing the second part of the first part can be used in a simple way, a new tube in the pantry.

It is advantageous if the first part is fixed to the suction head and the second part is releasably connected to the first part, wherein on the second part or between the first part and the second part a continuous recess for the passage of a hose portion is formed. The holder effectively forms an intermediate ring on the suction device for holding a suction bag and for receiving a suction bag precursor, namely a hose. In this embodiment, then this intermediate element (which is in particular designed as a ring) is formed in two parts with the first part and the second part.

It is particularly advantageous if a pressure compensation chamber is provided which is formed when the suction bag is held on the holder between the suction bag and a suction material container wall, and which is pressure-effectively connected to the suction fan device and is in particular pressure-effectively connected to the suction fan device via a suction chamber which can be charged with suction material , In an air-impermeable formation of a suction bag, the pressure compensation chamber prevents suction of the suction bag by the Sauggebläseeinrichtung. It is advantageous if the pressure equalization chamber is assigned a blocking device against the ingress of suction material into the pressure compensation chamber. The pressure equalization chamber can thus be connected to the suction fan device in a simple manner in a pressure-effective manner, whereby the ingress of suction material is prevented. In particular, the blocking device can then be arranged on the holder.

In one embodiment, the barrier device comprises or is a filter device which is connected to a connection opening between an intake space (for suction material) and the pressure compensation chamber is arranged. The filter device prevents suction material from entering the pressure equalization chamber from the suction space. The filter device is in particular arranged so that a tool is necessary for their removal and thereby unintentional removal is prevented.

In an alternative or combinatorial embodiment, the blocking device is or comprises a movable closing element which is arranged in a connecting opening between an intake space and the pressure compensation chamber. The closing element forms a kind of check valve or backflow flap.

In particular, the movable closure element is then arranged and designed so that it is open in a suction operation with a negative pressure and is closed in a non-suction operation. In a suction operation with negative pressure, penetration of suction material from the suction space into the pressure equalization space is substantially prevented by the pressure conditions. As soon as there is a pressure equalization and especially at the transition to non-suction operation, the closing element closes.

It is advantageous if the locking device is arranged on the holder.

This results in a simple structural design.

If a suction bag is held on the holder, then it covers a region of the suction device which can be acted upon by suction material, this region in particular comprising a suction connection opening, an intake space and a filter device for the suction blower device. This allows suction material to be taken up in a bag and "packaged" and removed without an operator coming into contact with the suction material.

It is advantageous if a closure device is provided for closing a hose to form a suction material container and for closing a suction material bag. The closing device ensures an airtight seal shut down. For example, the closure is made by pinching, for example, with a metal clip or with a band.

It is also advantageous if a separating device for separating a closed suction bag from a hose or other bag for suction bag. This makes it possible, on the one hand, to provide a new empty suction bag, and on the other hand, a filled suction bag can be removed from the system. The closing device or the separating device may for example be arranged fixedly on the suction device or may be associated with it in a coupled or uncoupled manner.

It is basically possible for the holder to be involved in the manufacture of the suction device.

It is also possible that a suction bag holding device for a suction device is provided, wherein the suction device comprises a suction head with a suction fan and a suction container, and the suction bag holding device comprises a holder, which is designed for fixing with the suction head, and the holder a storage chamber having a storage space, which is designed to receive one or more tubes, and wherein from a tube suction bag can be produced.

Such a suction bag holding device can be used to retrofit an existing suction device, and it is thus possible to provide a suction device which enables a comfortable and low-contamination disposal of suction material.

In particular, at least one hose is arranged in the storage space, which is in particular folded, wherein preferably the one or more hoses have an air-tight wall or wall of filter medium. Advantageously, the holder has an annular region, on which the reservoir is arranged, wherein the annular region closed surrounds at least one continuous annular opening.

Advantageously, the storage space has an annular cross-section.

Furthermore, it is advantageous if the storage chamber has a continuous recess which is in communication with the storage space and through which a hose region can be carried out, wherein advantageously the storage chamber is closed except for the continuous recess.

Conveniently, the continuous recess is annular and in particular surrounds closed a continuous annular opening of the holder.

It is also advantageous if the continuous recess is associated with a sealing device for sealing against the ingress of suction material into the storage space.

It is also advantageous if the holder has a first part and a second part, wherein the first part and the second part are detachably connectable to each other and form a portion of the first part and a portion of the second part walls for the storage space.

It is also advantageous if in the holder a locking device is arranged against the ingress of suction material in a pressure compensation chamber.

According to the invention, a method is provided for operating a suction device according to the invention, in which a hose region is pulled out of the reservoir for producing a suction bag and the hose region is closed in the region of a lower end with a first closure. The closing with the first closure takes place in such a way that the suction bag is "suction-dense" on the closure and in particular is airtight.

The extraction of the hose portion from the storage space takes place when the suction head is removed from the suction material container.

In the solution according to the invention, suction bags are produced in succession from an endless tube. In a suction operation of the suction device, preferably only one suction bag is used, which is held on the holder and is connected to the hose in the storage space. It is favorable if a filled suction bag, which is held on the holder, is closed with a second closure, wherein the first closure and the second closure are spaced apart. The suction material is then in a "suction-tight" closed space between the first closure and the second closure.

The filled and closed with the second closure suction bag is then separated by a cutting operation of the next bag bag, which is closed with a first corresponding closure, between the first closure of the next bag and the second suction Sachschluchels. This allows the filled and closed "old" bag to be removed from the system. Furthermore, a new suction bag is made, which is open on one side and can be filled from there with suction material. These operations can be carried out by an operator without contact with suction; First, the old suction bag and then the new bag of suction bags cover suction-leading areas of the suction device. It is advantageous if the storage chamber is filled with a new tube, that even a hose portion of a preceding tube is held by the holder. This allows a new tube to be used (as a "source" of new sac bags), minimizing the risk of contamination.

In particular, while the held hose portion is provided with a closure or was previously provided with a closure to a

To provide hose end suction bag, which covers suction material acted upon areas. This hose end bag then protects against contamination.

The suction head is positioned with a first part of the holder fixed thereto so that the holder can be accessed and a second part of the holder can be removed from the first part. For example, the suction head is turned upside down (with a top on a pad). By removing the second part of the holder from the first part is accessible to the pantry. The end-of-hose bag covers suction material-leading areas.

It is then also advantageous if a new tube is placed in the reservoir over a remaining hose portion of a hose end suction bag and the second part is connected to the first part. It will then be a bag through the appropriate closure of the new

Hose produced.

It can then be brought into the new bag after the production of a new bag of suction bag from the new hose end of the bag. The new sack bag now covers the suction material-leading areas and the remaining "old" Suction bag, ie the hose end bag, can be detached from the holder. The following description of preferred embodiments is used in conjunction with the drawings for further explanation of the invention. FIG. 1 is a schematic sectional view of an embodiment of a suction device according to the invention;

Figure 2 is a side view of another embodiment of a suction device according to the invention with a partial section;

Figure 3 is a sectional view taken along line 3-3 of the suction device according to Figure 2 with variants for a locking device;

FIG. 4 shows an enlarged view of the region X according to FIG. 3

(without inserted filter medium);

Figure 5 is a sectional view taken along line 5-5 of Figure 4 (with inserted filter medium); FIG. 6 is an enlarged view of the region Y according to FIG. 3;

Figure 7 is a sectional view taken along the line 7-7 of Figure 6;

FIG. 8 shows a view similar to FIG. 3 with an alternative embodiment of blocking devices;

FIGS. 9 to 11 schematically show processes for removing a suction bag filled with suction material and closing it; Figure 12 is a schematic view of the suction device according to FIG

2 in a sectional view with a suction bag; Figure 13 is a schematic representation of an intermediate step in a process for inserting a new tube; and

Figure 14 is a view similar to Figure 12 after insertion of a

new hose.

An embodiment of a suction device according to the invention, which is shown in a schematic sectional view in FIG. 1 and designated by 10, is a vacuum cleaner in the form of a stand-alone device and in particular a portable device.

The suction device 10 comprises a suction head 12 and a suction material container 14. The suction head 12 can be detachably fixed to the suction material container 14, in particular on the end wall side.

The suction head 12 can for example be completely removed from the suction container 14 or it can be removed, for example, by unfolding and remain connected to the suction container 14, for example via a hinge.

The suction material container 14 has a bottom 16 on which a suction material container wall 18 is arranged. The suction material container wall 18 is, for example, integrally connected to the bottom 16. About the bottom 16, the suction device 10 is directly or indirectly (for example via rollers, which are arranged on an outer side of the bottom 16) can be set up on a base.

The suction container 14 has an interior 20.

The suction container 14 is made for example of a metallic material or plastic material. He is rigid. At the suction head 12, a suction fan 22 is arranged. This serves to generate a negative pressure in order to achieve a suction effect. The suction fan 22 includes a fan 24 and a fan motor 26.

The Sauggebläseeinrichtung 22 is fixed to the suction head 12 that it is mitabgenommen with removal of the suction head 12 of the suction material container 14. The suction fan device 22 is associated with a filter device 28 ("main filter"). The filter device 28 prevents suction material can reach the Sauggebläseeinrichtung 22. The filter device 28 is arranged upstream of the suction head 12 of the suction fan device 22 or it is arranged on the suction material container 14.

The suction device 10 has an intake manifold 30. At this intake manifold 30, a suction hose or the like can be connected. Intake port 30 opens with a suction connection opening 32 into an intake space 34. Into the intake space, suction material can be sucked in through the suction connection opening 32 due to the application of vacuum by the suction fan device 22.

The suction chamber 34 is arranged in the suction material container 14. In principle, the interior 20 of the suction material container 14 may receive suction material 36 (indicated by dots in FIG. 1).

In the suction device 10 according to the invention, a holder 38 is provided. The holder 38 is fixedly fixed to the suction head 12 via a fixing region 40. When the suction head 12 is removed from the suction container 14, d. H. In particular, a contact between a front side of the suction material container wall 18 and the suction head 12 is released, then the holder 38 is mitabgenommen. The holder 38 has a storage chamber 42 which defines a storage space 44. The storage chamber 42 comprises a chamber wall 46, via which the storage space 44 is formed.

The storage space 44 serves to accommodate a particular folded

Hose 48 made of an airtight plastic material. Suction bags 50 can be produced from the tube 48, one (preferably exactly one) suction bag 50 being held on the holder 38 in the interior 20 of the suction container 14.

In one embodiment, the holder 38 includes a first portion 52 and a second portion 54. The first portion 52 is fixedly secured to the suction head 12. The second part 54 is detachably fixed to the first part 52.

A seal may be provided which is arranged on the first part 52 and / or the second part 54 and serves to seal a connection region of these two parts 52, 54.

In one embodiment, the first part 52 has a first region 56 with a first wall 58. The first wall 58 is firmly fixed to the suction head 40. When the suction head 40 is seated on the suction material container 14, then the first wall 58 is immersed in the interior 20 of the suction material container 14.

The first part 52 of the holder 38 furthermore has a second region 60 with a second wall 62. The second region 60 adjoins the first region 56. The associated second wall 62 is connected to the first

Wall 58 firmly and in particular integrally connected. The second wall 62 is oriented transversely to the first wall 58 and, for example, perpendicular to it. When attached to the suction container 14 suction head 12, the second wall 62 is also immersed in the interior 20. The first part 52 of the holder 38 also has a third region 64 with a third wall 66. The third wall 66 is oriented transversely to the second wall 62. It is connected to this and in particular integrally connected. The third wall 66 is oriented, for example, at least approximately parallel to the first wall 58. The third area 64 with the third wall 66 is likewise immersed in the interior 20 when the suction head 12 is fixed to the suction-material container 14. A partial region 68 of the second wall 62 and the third wall 66 or at least a part thereof form part of the chamber wall 46 of the storage chamber 42.

The second part 54 of the holder 38 has a first region 70 with a first wall 72. The first wall 72 is fluid-tightly arranged on the second wall 62 and at a distance from the third wall 66 in order to form the storage space 44.

Furthermore, the second part 54 of the holder 38 has a second region 74 with a second wall 76. The second wall 76 is oriented transversely to the first wall 72 of the second part 54 and to the third wall 66 of the first part 52. It is arranged at a distance from the second wall 60 of the first part 52 of the holder 38. Via the first wall 72 and the second wall 76 of the second part 54 of the holder 38 in cooperation with the second wall 60 and the third wall 66 of the first part 52 of the holder 38, the storage space 34 is formed. This has an annular shape. The holder 38 surrounds with the storage chamber 42 a continuous annular opening 78. The continuous annular opening 78 is surrounded by the holder 38 in this area closed; the third wall 66 of the first part 52 of the holder 38 forms a closed boundary wall for the continuous annular opening 78.

In one exemplary embodiment (FIG. 1), the suction space 34 comprises a first area 80, which is laterally bounded by the first wall 58 of the first part 52 of the holder 38 and bounded downwards in the direction of the bottom of the suction material container 14 by the second wall 60. It further comprises a second region 82, which is formed by the continuous annular opening 78. The holder 38 has an annular region, to which the continuous annular opening 78 is assigned. This annular region is the region of the storage chamber 42 with the storage space 44.

The storage chamber 42 has a continuous recess 84 towards the bottom 16, which is in particular annular. The continuous recess 84 surrounds the continuous annular opening 78 closed.

In one embodiment, the through recess 84 is formed as a continuous opening on the second wall 76.

It can also alternatively be provided that the through-cut recess 84 is formed by a gap between the third wall 66 of the first part 52 of the holder 38 and the second wall 76 of the second part 54 of the holder 38.

Through the continuous recess 84, a hose portion 86 of the arranged in the reservoir 44 hose 48 can pass. As a result, the suction bag 50 can be suspended by the holder 38 suspended in the interior. position 20 of the suction container 14, wherein the holder 38 holds the bag Suction bag 50 and just above the hose portion 86 with the

Hose 48 is connected in the reservoir 44. In order to produce the suction bag 50, the corresponding tube part, which lies in the direction of the bottom 16, is closed by a closure 88 indicated schematically in FIG. For example, the closure may be a constriction of the tube to make the corresponding sac bag 50, or a closure clip may be used or the like.

In one embodiment, the continuous recess 84 on the storage chamber 42 is associated with a sealing device 90. The storage chamber 42 is closed at the storage space 44 except for the through-cut recess 84 in order to allow the passage of the hose region 86. By the sealing device 90, a sealing effect with respect to the penetration of suction material from the Einsaugraum 34 is achieved in the storage space 44.

In one embodiment, the sealing device 90 includes one or more seals 92 disposed on the continuous recess 94. For example, such a seal 92 is formed as an O-ring seal.

The seal 92 is positioned on the through-hole 84 so as to abut and in particular press against the hose portion 86 passing through the through-hole 84. In particular, the seal 92 then presses the hose region 86 against a boundary wall of the through-cut recess 84 or against a further seal. In an alternative embodiment of a sealing device, which can also be combined with one or more seals 92, can be positioned over the second part 54 of the performed through the through recess 84 hose portion 86 against the first part 52 of the holder 38 and in particular press.

For this purpose, for example, a positioning device 94 is provided, by means of which the second part 54 can be positioned relative to the first part 52 such that a sealing effect is achieved in the through-cut recess 84.

In one embodiment, the positioning device 94 comprises a corresponding force-applying device 96, in order to be able to press the second part 54 correspondingly against the first part 52 in the region of the continuous recess 84.

The second part 54 is releasably fixed to the first part 52. The releasable connectability is, if a positioning device 94 is provided, designed so that the described sealing effect can be achieved. If the suction bag 50, which is made of the hose 48 with a "suction-dense" wall, is held on the holder 38 and is closed via the closure 88 suction-tight, then it forms a relation to the interior 20 of the suction container 14 Cover for suction material-leading areas. The suction bag 50 covers with its wall 98 with respect to a suction guide the suction port 32, the Einsaugraum 34 and the filter device 28 from.

In one embodiment, the tube 48 has an air-tight wall. In an alternative embodiment, the tube 48 has a wall of filter medium which is dense for suction material but permeable to air.

The holder 38 is fixed to the suction head 40. When it is moved, for example, by complete removal from the suction material container 14 or by Um- fold, then the holder 38 is moved with the bag 50. The suction container 14 is then open. However, it is not acted upon by suction material and the operator does not come into contact with suction material, since just the suction bag 50 provides for a corresponding cover.

In a cleaning operation of the suction device 10, the suction bag 50 is held on the holder 38 in the suction container 14 and it can absorb suction material. In the suction chamber 34 takes place in the suction operation by the suction fan 22, a negative pressure. In principle, this can lead to the suction bag 50 being to a certain extent sucked in, in particular if it has an air-tight wall. To prevent this, a pressure equalization chamber 100 is provided between the suction bag 50 and an inner side of the suction material container wall 18, which is also subjected to negative pressure. The pressure compensation chamber 100 is in pressure-effective connection with the suction fan device 22.

For this purpose, one or more openings 104 are arranged on a cover 102 of the pressure compensation chamber 100 in order to allow this pressure equalization. In one embodiment, the cover 102 of the pressure compensation chamber 100 is formed by the second wall 62 of the first part 52 of the holder 38, optionally in cooperation with the first wall 58. The opening or openings 104 are disposed at a portion of, for example, the first wall 58, which is outside the storage chamber 42, d. H. which protrudes beyond the first wall 72 of the second part 54 of the holder 38.

The opening or the openings 104 is associated with a locking device 106, which prevents the ingress of suction material from the Einsaugraum 34 (which the opening 104 on a dirty side) into the pressure compensation chamber 100 (which is adjacent to the opening 104 on a clean side) is prevented.

As will be explained below with reference to exemplary embodiments, the blocking device 106 may, for example, be a filter device and / or comprise (at least) a movable closure element in the form of a backflow flap or a check valve which is open in a suction operation (when the suction chamber 34 is under negative pressure) , and is closed at balanced pressure difference and in particular at non-negative pressure. When balancing the pressure difference, the closing element opens.

In one embodiment, the suction device 10 includes a separator 108 through which suction bags are separable from the tube 48.

It can further be provided that the suction device 10 comprises a closing device 110, through which hoses can be closed so that a suction bag 50 can be produced or a (filled) suction bag can be closed.

The separating device 108 or the closing device 110 can be arranged fixedly on the suction device 10 or be assigned loosely. In a fixed arrangement, the separating device 108 and the closing device 110 are arranged in particular in the interior 20 of the suction material container 14.

The basic mode of operation of the suction device 10 with regard to the suction bag operation is explained with reference to FIGS. 9 to 11:

In a cleaning operation of the suction device 10 in which the suction head 12 is fixed to the suction material container 14 and the suction blower device 22 generates a corresponding negative pressure, suction material is sucked through the suction port 32 into the Einsaugraum 34.

A (preferably single) suction bag 50 hangs on the holder 38 in the interior 20 of the suction container 14. This suction bag 50 is closed at the bottom by the closure 88 and is open to the continuous ring opening 78 to accommodate sucked suction.

The sac bag 50 is made from the tube 48 which is positioned in the reservoir 44.

For this purpose, a hose portion 86 of the corresponding length is pulled through the through-hole 84 and the bag is made through the closure 88. The closure 88 thus closes the hose down to the bottom 16 of the suction container 14, so that just no suction material can fall through and the suction bag 50 can absorb waste.

The hose 48 is an endless hose, which in particular sits folded in the storage space 44. A corresponding hose wall is impermeable to air or formed by a filter medium impermeable to suction material.

As a result, the suction bag 50 is impermeable to impermeability to suction with a corresponding closure 88. In the suction operation, a pressure equalization takes place in the pressure equalization chamber 100 in that it is connected to the suction fan device 22 in a pressure-effective manner. As a result, sucking-in of the suction material bag 50, in particular in the case of an air-tight wall, is avoided by the suction fan device 22.

After completion of the cleaning operation, the suction head 12 is removed from the suction material container 14 for removal of the suction material bag 50, for example completely (FIG. 9) or by unfolding. The holder 38 is fixed to the suction head 40. He is thereby mitabgenommen. With suction material acted upon areas are covered to the outside through the bag 50 and the holder 38.

By lifting the suction head 12 in a direction 112 away from the suction material container 14, for example, the suction material bag 50 can be enlarged by withdrawing further tube regions from the storage space 44 or, if necessary, an operator can pull on the suction material bag 50 in the opposite direction In the direction 112, draw tubing areas out of the reservoir 44 to extend the suction bag 50 in a direction along the direction 112.

The suction bag 50 is still connected in this state via an air-tight wall with the hose 48 in the reservoir 44.

The closure 88, through which the suction bag 50 is closed down, forms a first closure.

An operator then closes the suction bag 50 at a distance from the first closure 88 with a second closure 114 (FIGS. 9 and 10). The filled bag Suction bag 50, which was made of a tube, is characterized up-close and down-suction-tight and in particular hermetically sealed (with appropriate design of the second closure 114).

An operator then closes the tube piece above the suction bag 50 closed by the first closure 88 and the second closure 114 with a closure 116 (FIGS. 9 and 10). This closure 116 is the first closure of a new suction bag 118. After carrying out this process, the appropriately filled bag 50 is separated from the tubing 48. In this case, a cutting movement takes place between the second closure 114 and the first closure 116. This is indicated in FIG. 11 by a knife 120. The knife 120 is part of the separator 108.

It can then be the "old" filled bag Suction 50, which is closed, be removed and disposed of. The "new" Suction bag 118 is now the first via the closure 116

Closure in the area of its lower end sealed tight. He is basically positioned as described with reference to FIG. It can be placed in accordance with the interior 20 of the suction container and the suction head 12 can be fixed to the suction container 14 again. The suction device 10 is now ready for new suction operations until the suction bag 118 is refilled.

During a "bag change operation", an operator does not come into contact with suction material. First of all, the old sack bag 50 and then the new sack bag 118 cover suction material for exposed areas of the suction device 10 with respect to the operator.

The solution according to the invention also makes it possible to dispose of dusts which are hazardous to health (for example those in classes L, M or H according to the standard DIN EN 60335-2-69) in a comfortable and dust-free manner. The operator comes with the disposal not in contact with any health-hazardous waste.

The suction bag 50 or 118 includes suction material acted upon components and the suction material 36 completely. The suction material is airtight about the suction bag 50 and 118 against an outside space outside of the corresponding Suction bag 50 and 118 included. Even with a Säuggutbeutelwechsel this inclusion is retained, as the bag for suction material 118 on the tube 48, on which previously the bag 50 has been made, is made again.

The pressure compensation chamber 100 ensures that the suction function is not impaired.

This results in a simple positioning for the corresponding bag. The storage chamber 42 with the storage space 44 is positioned in the suction container 14 (in the interior 20). There is no actual bag change by a new bag must be positioned, but from the same tube several bags are made. Suction-tight closing of suction bags on the first closure 88 and the second closure 114 can be achieved, for example, via a type of wire clamp pliers with clamping function, wherein, for example, a pair of scissors or the like can be integrated. It is thus also possible to integrate the separating device 108 into the closing device 110.

It is basically possible to provide the holder 38 with the appropriate functionality in the manufacture of the suction device 10. But it is also possible that an existing suction device 10 is retrofitted with a corresponding suction bag holding device, which has the corresponding holder 38 with the above-described training and the described functionalities.

This holder is then designed so that it can be fixed to a corresponding suction head of the suction device and it is adapted to the geometric conditions. A further embodiment of a suction device, which is shown in FIGS. 2 to 8 and designated 122, comprises a suction material container 14 ', on which a suction head 12' is detachably fixed. A suction fan device 22 'is arranged on the suction head 12' (compare FIGS. 12 to 14).

A storage chamber 42 'with a storage space 44' is arranged on the holder (FIGS. 12 and 13).

The holder 38 'is formed in two parts with a first part 52', which is firmly fixed to the holder 38 ', and a second part 54', which is detachably attached to the first part 52 '.

The storage space 44 'is formed between the first part 52' and the second part 54 '.

The storage space 44 'occupies, as described above with reference to the storage space 44, a hose 48, which is in particular folded in the storage space 44' is positioned. From the tube 48, as described above, suction bag 50 can be produced, which are positioned in an interior of the suction container 14 in a suction operation of the suction device 122.

The suction device 122 has an intake space 34 ', on which a suction connection opening is arranged, to which a suction hose can be connected, in particular via a connecting piece.

The holder 38 'has a wall 62' which is formed on the first part 52 '.

On the wall 62 'is a locking device 106' is arranged. The blocking device serves to prevent the ingress of suction material out of the suction space 34 'into a pressure compensation chamber 100' around a suction bag 50. In one embodiment, the barrier means 106 'comprises a filter device 124 (FIGS. 3 to 5). The filter device 124 comprises at least one filter 126, which is dust-impermeable. The filter 126 has a dirty side 128, which faces the Einsaugraum 34 ', and a clean side 130, which faces the pressure compensation chamber 100'.

Openings are provided via the filter 126, via which the pressure compensation chamber 100 'can be connected in a pressure-effective manner to the suction fan device 22'.

The filter device 124 as a whole is preferably fixed to the holder 38 'via a fixing device 132 such that a tool is required for the solution or replacement of the filter device 124 or the filter 126. As a result, in particular an unintentional removal of the filter device 124 is prevented.

In an alternative embodiment of a blocking device 106 ', which can also be combined with the filter device 124, a blocking flap device 134 (FIGS. 3, 6, 7) is provided.

The blocking flap device 134 comprises as a blocking element (at least) a blocking flap 136 which is arranged to be movable and in particular pivotable.

In one embodiment, the barrier flap 136 is arranged to pivot into the suction space 34 '.

The blocking flap 136 is seated on an opening 137, which is connected to the pressure compensation chamber 100 '.

The blocking flap device 134 is designed so that in a suction operation, the negative pressure of the suction fan 22 'the blocking flap 136 opens and thereby releases the corresponding opening. In turn, a pressure-effective connection between the suction fan 22 'and the pressure compensation chamber 100' is produced. Since the negative pressure by the Sauggebläseeinrichtung 22 'also causes a suction effect, the ingress of suction material through the corresponding opening with the barrier flap 136 is opened in the pressure compensation chamber 100' is substantially prevented. If no negative pressure is applied by the suction fan device 22, then the blocking flap 136 is closed (see FIG. 5) and in particular spring-loaded closed, and no suction material can escape from the suction space 34 'into the pressure compensation chamber 100'. In the exemplary embodiment shown in FIG. 3, both a filter device 124 and a barrier flap device 134 are provided.

In a variant of an exemplary embodiment (FIG. 8), a first filter device 124a and a second filter device 124b are arranged on the corresponding holder 38 '.

In particular, the locking device 106 'is arranged on the holder 38'.

The suction device 122 functions as described above with reference to the suction device 10.

On the basis of the suction device 122, the basic steps for filling the storage chamber 42 'with a new hose are explained below, when the "old" hose is about to be exhausted.

FIG. 12 shows a view in which a suction bag 50 is still arranged on the holder 38 '. The hose 48 in the storage space 44 comes to an end. A "last" suction bag 138 is made, which is attached to nem lower end as described above with a closure corresponding to the first closure 88 is closed.

This suction bag 138 covers the suctions-leading portions of the suction device 122 from.

The suction bag 138 is in particular manufactured and thereafter no further cleaning operation is carried out, so that the suction bag 138 is substantially empty. (However, it can be "contaminated" on its inside by the fluid-effective connection with suction material-carrying regions of the suction device 122.)

It is then the suction head 12 'removed from the suction container 14' and positioned so that the holder 38 is accessible.

For example, the suction head 12 'is placed with its upper side 140 on a base 142.

The second part 54 'of the holder 38 is then released from the first part 52' (FIG. 13). The remaining suction bag 138 is not removed, but remains on the first part 52 'of the holder 38th

A new tube 144 is inserted. This is thereby slipped over the "old" Suction bag 138 and slipped over in the area of the storage space 44 '.

The new tube 144 is closed at its lower end 146 as described above to form a "new" sac bag 146. The suction head 12 'is placed back on the suction material container 14'.

The "old" sack bag 138 is now included in the new sack bag 146 (FIG. 14). He can now or at a later date (if a Cleaning operation is done and the new bag 146 is filled) are pulled in the new bag 146, ie be moved so that it no longer hangs on the holder 38. This makes it possible to insert a new suction hose, from which corresponding suction bag can be formed, without the operator coming into contact with suction material or areas of the suction device 122 that are loaded with suction material. Otherwise, the suction device 122 functions as described above.

LIST OF REFERENCE NUMBERS

suction device

, 12 'suction head

, 14 'Suction container

ground

Sauggutbehälterwandung

inner space

, 22 'Suction blower device

fan

blower motor

filtering device

intake

Suction connection opening, 34 'suction chamber

dirt in

, 38 'holder

suction head

, 42 'pantry

'44' pantry

chamber wall

tube

Sauggutbeutel

, 52 'first part

, 54 'second part

first area

, 58 'first wall

second area

, 62 'second wall

third area

third wall subregion

first area

first wall

second area

second wall

continuous ring opening first area

second area

through recess

hose range

shutter

seal means

poetry

positioning

Kraftbeaufschlagungseinrichtung

wall

'100' pressure compensation room

cover

opening

, 106 'locking device

separator

closing

direction

shutter

"new" bag

knife

suction device

, 124a, b Filter device

filter

dirty side

clean side

fixing device Locking gate device

blocking flap

opening

Sauggutbeutel

top

document

"new" hose

"new" bag

Claims

claims

A suction device comprising a suction head (12, 12 ') with a suction fan (22, 22'), a suction container (14, 14 ') on which the suction head (12, 12') with respect to an interior (20) of the suction container (14; 14 ') is removably positioned, and a holder (38; 38') for holding a suction bag (50), characterized in that the holder (38; 38 ') has a storage chamber (42; 42') with a storage space (44, 44 '), which is designed to receive one or more tubes (48), wherein out of the one or more tubes (48) suction bag (50) can be produced.

2. Suction device according to claim 1, characterized in that in the storage space (44, 44 ') at least one hose (48) is arranged, which in particular is folded.

3. Suction device according to claim 1 or 2, characterized in that the one or more hoses (48) have an air-tight wall or a filter medium wall.

4. Suction device according to one of the preceding claims, characterized in that the holder (38, 38 ') holds a suction bag (50) in the interior (20) of the suction container (14, 14').

5. Suction device according to one of the preceding claims, characterized in that at the suction material container (14; 14 ') arranged suction head (12; 12'), the storage chamber (42; 42 ') in the suction material container (14; 14') is positioned ,

6. Suction device according to one of the preceding claims, characterized in that the holder (38, 38 ') has an annular region, on which the reservoir (44, 44') is arranged, wherein the annular region closed at least one continuous annular opening (78) surrounds which is in fluid communication with a suction port (32) even though a suction bag (50) is held on the holder (38; 38 ').

7. Suction device according to claim 6, characterized in that the at least one continuous annular opening (78) in fluid effective connection with an Einsaugraum (34; 34 ') is, on which the Sauganschlussöffnung (32) is arranged and / or that the at least one continuous Ring opening (78) in fluid-effective connection with a dirty side of the suction fan means (22; 22 ') associated filter means (28), even if a suction bag (50) on the holder (38, 38') is held.

8. Suction device according to one of the preceding claims, characterized in that the storage space (44, 44 ') has an annular cross-section.

9. Suction device according to one of the preceding claims, characterized in that the storage chamber (42, 42 ') has a continuous recess (84) which is in communication with the storage space (44, 44') and through which a hose region (86). is feasible.

10. Suction device according to claim 9, characterized in that the storage chamber (42, 42 ') is closed except for the continuous recess (84).

11. Suction device according to claim 9 or 10, characterized in that the continuous recess (84) is annular and in particular closed a continuous annular opening (78) of the holder (38, 38 ') surrounds.

12. Suction device according to one of claims 9 to 11, characterized in that the continuous recess (84) is associated with a sealing means (90) for sealing against the ingress of suction material into the storage space (44, 44 ').

13. Suction device according to claim 11, characterized in that the sealing device (90) comprises one or more sealing elements (92), which are arranged on the continuous recess (84) and / or has a positioning device (94) through which at the continuous Recess (84) one or more boundary walls of the continuous recess (84) can be positioned on a performed hose region (86).

14. Suction device according to one of the preceding claims, characterized in that in a suction operation with a suction bag (50) by the holder (38, 38 ') in the suction container (14; 14') outside the storage space (44; 44 ') is held and with a

Hose (48) in the reservoir (44, 44 ') is connected.

15. Suction device according to claim 14, characterized in that the held suction bag (50) has an interior which can be filled with suction material, and has an outer side which faces a suction gutbehälterwandung (18).

16. Suction device according to one of the preceding claims, characterized in that the holder (38, 38 ') is fixed at least with a partial region on the suction head (12, 12'). Λ R Qfi? t

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Suction device according to one of the preceding claims, characterized in that the holder (38, 38 ') has a first part (52, 52') and a second part (54, 54 '), the first part (52, 52 ') and the second part (54, 54') are detachably connectable to each other and a portion of the first part (52; 52'9 and a portion of the second part (54; 54 ') chamber walls for the storage space (44; 44') form.

Suction device according to claim 17, characterized in that the first part (52; 52 ') is fixed to the suction head (12; 12') and the second part (54; 54 ') releasably connected to the first part (52; 52') is connected, wherein on the second part (54; 54 ') or between the first part (52; 52') and the second part (54; 54 ') a continuous recess (84) for passage of a hose portion (86) is formed ,

19. Suction device according to one of the preceding claims, characterized by a pressure equalization chamber (100, 100 ') which is formed on the holder (38, 38') suction bag (50) between the suction bag (50) and a suction material container wall (18) , and which is pressure-effectively connected to the suction fan device (22; 22 ') and in particular via a suction chamber (34; 34') which can be charged with suction material, is connected in a pressure-effective manner to the suction fan device.

20. Suction device according to claim 19, characterized in that the pressure equalization chamber (100, 100 ') is associated with a blocking device (106, 106') against the ingress of suction material into the pressure equalization chamber (100, 100 ').

21. Suction device according to claim 20, characterized in that the blocking device (106, 106 ') is or comprises a filter device (124) which is connected at a connection opening between an intake space (34, 34') and the pressure equalization chamber (100; ') is arranged. Λ R Qfi? t

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22. Suction device according to claim 20 or 21, characterized in that the blocking device (106, 106 ') is or comprises a movable closing element (136) which is connected to a connecting opening between an intake space (34; 34') and the pressure compensation chamber (100; 100 ') is arranged.

23. Suction device according to claim 22, characterized in that the movable closing element (136) is arranged and designed so that it is open in a suction operation with a negative pressure and is closed in a non-suction operation.

24. Suction device according to one of claims 19 to 23, characterized in that the locking device (106, 106 ') on the holder (38, 38') is arranged.

25. Suction device according to one of the preceding claims, characterized in that, when a holder bag (50) is held on the holder (38, 38 '), it covers an area of the suction device that can be charged with suction material, this area in particular covering a suction connection opening (32 ), an intake space (34; 34 ') and a filter device (28) for the suction fan device (22; 22').

26. Suction device according to one of the preceding claims, characterized by a closing device (110) for closing a hose for forming a Suction bag (50) and for closing a Suction bag (50).

27. Suction device according to one of the preceding claims, characterized by a separating device (108) for separating a sealed suction bag (50) from a hose or other bag for suction. Λ R Qfi? t

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A suction bag holding device for a suction device (10; 122), wherein the suction device (10; 122) has a suction head (12; 12 ') with a suction fan device (22; 22') and a suction material container (14; 14 '), characterized in that the suction bag holding device comprises a holder (38; 38 ') which is designed for fixing to the suction head (12; 12'), and that the holder (38; 38 ') has a storage chamber (42; 42'). ) having a storage space (44, 44 ') which is designed to receive one or more hoses (48), and wherein from a hose (48) suction bags (50) can be produced.

29. A method for operating a suction device according to one of

Claims 1 to 27, characterized in that for producing a suction bag (50) a hose region from the reservoir (44; 44 ') is pulled and the hose region is closed in the region of a lower end with a first closure (88).

30. A method according to claim 29, characterized in that a filled suction bag (50) which is held on the holder (38; 38 ') is closed with a second closure (114), wherein the first closure (88) and the second closure (114) are spaced apart.

31. Method according to claim 29, characterized in that the filled and sealed with the second closure (114) bag by a suction process from the next bag, which is closed with a first closure (116), between the first closure (116) of the next suction bag and the second closure (114) is separated.

32. The method according to any one of claims 29 to 31, characterized in that the storage chamber (44, 44 ') is filled with a new tube, when still a hose portion of a preceding tube by the holder (38, 38') is held. Λ R Qfi? t

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33. Method according to claim 32, characterized in that the held hose region is provided with a closure or has been provided to provide a hose end suction bag which covers regions which are subject to suction.

34. Method according to claim 29, characterized in that the suction head (12; 12 ') is positioned with a first part (52; 52') of the holder (38; Holder (38, 38 ') is accessible and a second part (54, 54') of the holder (38, 38 ') of the first part (52, 52') can be removed.

35. The method according to claim 34, characterized in that a new tube in the reservoir (44, 44 ') via a remaining

Hose section of a ski search suction bag is covered and the second part (54 ') with the first part (52') is connected.

36. The method according to claim 35, characterized in that after production of a new suction bag (146) from the new tube (144) of the hose end-suction bag is placed in the new suction bag (146).