EP3329822A1 - Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner - Google Patents

Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner Download PDF

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Publication number
EP3329822A1
EP3329822A1 EP16201873.3A EP16201873A EP3329822A1 EP 3329822 A1 EP3329822 A1 EP 3329822A1 EP 16201873 A EP16201873 A EP 16201873A EP 3329822 A1 EP3329822 A1 EP 3329822A1
Authority
EP
European Patent Office
Prior art keywords
filter
chamber
fluid
filter element
dirt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16201873.3A
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German (de)
French (fr)
Inventor
Hans Streule
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hans Streule Holzbau and Isolation
Original Assignee
Hans Streule Holzbau and Isolation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hans Streule Holzbau and Isolation filed Critical Hans Streule Holzbau and Isolation
Priority to EP16201873.3A priority Critical patent/EP3329822A1/en
Publication of EP3329822A1 publication Critical patent/EP3329822A1/en
Application status is Withdrawn legal-status Critical

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658Construction of outlets
    • A47L9/1666Construction of outlets with filtering means
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/20Means for cleaning filters

Abstract

The present invention is directed to a filter device (100) for filtering a fluid. The filter device (100) comprises a collecting chamber (101), a filter chamber (10), a cleaning chamber (20) and a filter element (30). The cleaning chamber (20) and the filter chamber (10) are in fluid communication by means of the collecting space (101). The cleaning chamber (20), the collecting container (101) and the filter chamber (10) are arranged downstream one after the other in a flow direction. The filter element (30) is arranged in the filter chamber (10) such that the filter chamber (10) is subdivided into a dirt area (12) and into a clean area (13). The filter element (30) extends at least partially into the cleaning chamber (20) in such a way that the fluid is guided at least partially along a dirt surface (31) of the filter element (30) and flows past it in particular in such a way that it is deposited on the filter element ( 30) located filter cake (F) is releasable.

Description

  • The present invention relates to a filter device for filtering a fluid, a method for filtering a fluid and a vacuum cleaner comprising a device as described herein according to the preambles of the independent claims.
  • Various filter devices for filtering a fluid are known from the prior art, in particular vacuum cleaners have become known, which have a corresponding filter device. For example, bagless vacuum cleaners are known from the prior art, which are based on the principle of cyclone separation. Although the removal of dust particles from a fluid by means of a cyclone is an efficient method, a certain amount of dust or dirt always remains in the air stream. This dust escapes with the exhaust air from the vacuum cleaner when the exhaust air is not filtered. Therefore, in the prior art, for example, proposed to introduce a dust filter in the exhaust air stream. The disadvantage here is that this filter must be replaced at regular intervals either or cleaned.
  • With the DE 102 47 655 is a cyclone vacuum cleaner with a filter device has become known, which allows automatic cleaning of the filter. It is provided that the filter with a mechanical element, brushes here, is cleaned. It is disadvantageous that despite this automatic cleaning of the filter must be checked from time to time or cleaned by hand. Also, the mechanical cleaning agents, in this case the brushes, must be checked from time to time and replaced if necessary.
  • It is an object of the invention to overcome these and other disadvantages of the prior art. In particular, a filter device for filtering a fluid should be provided, which makes it possible to dispense with cleaning intervals on the filter and to allow operation of the filter device without loss of suction power. Likewise, a method for automatically cleaning a filter device is to be provided. The objects described herein are also to be solved with a corresponding vacuum cleaner with a filter device as described herein.
  • These objects are achieved by the devices and methods defined in the independent claims. Further advantageous embodiments will become apparent from the dependent claims.
  • A filter device according to the invention for filtering a fluid, in particular for filtering an air flow, comprises a collecting chamber, a filter chamber, a cleaning chamber and a filter element. The cleaning chamber has an air inlet opening for connection to a suction pipe and the filter chamber has an air outlet opening for connection to a vacuum generator or a suction motor. The cleaning chamber and the filter chamber are in fluid communication by means of the collecting chamber. That is, the cleaning chamber is connected to the collecting space and the collecting space is connected to the filter chamber. The cleaning chamber, the collecting chamber and the filter chamber are arranged downstream in a flow direction. The flow direction is defined by the path of the fluid from the air inlet opening to the air outlet opening, wherein the air outlet opening is arranged downstream. The filter element is arranged in the filter chamber such that the filter chamber in a dirt area and in a clean area is divided. The filter element accordingly has a dirt surface facing the dirt area and a clean surface facing the clean area. The filter element extends at least partially into the cleaning chamber, such that the fluid is guided at least partially along the dirt surface of the filter element and in particular flows past it, preferably in such a way that a filter cake located on the filter element can be detached from the dirt surface.
  • A fluid is understood here and below to mean both gases and liquids. The invention is preferably directed to gaseous fluids. In this case, gaseous fluids in particular include gaseous substances with dust or impurities, in particular suspended particles. The fluid is in particular an air stream with such impurities which can be removed from the fluid with a filter device and a method as described herein.
  • The fluid acts on the filter element. By the flow and the energy contained in the flow, the dirt surface of the filter element is acted upon. This makes it possible for particles or dust residues on the filter element to detach and for the filter element to be cleaned during this process. Typically, such particles or dust residue are in the form of a filter cake.
  • Preferably, the collecting space, the filter chamber and the cleaning chamber are each sealed against the outside environment and in particular each against each other, such that, with the exception of the functional connections, no exchange with the ambient air or with different sections of the fluid flow takes place with each other.
  • The dirt area of the filter device can be designed as a dust chamber. This means that the dirt area is designed as a separate chamber which is in fluid communication with the collecting container, for example via a pipe section or a corresponding opening.
  • This makes it possible to provide a preferred flow behavior of the fluid in the dirt area. The flow can thus be directed or calmed in particular. The filter element / the dirt surface can be selectively applied with the fluid.
  • Additionally or alternatively, the clean area of the filter chamber may be formed as an air chamber.
  • The formation of the clean area as an air chamber and in particular as a separate air chamber also makes it possible to direct the fluid in certain paths and to provoke a desired flow. The efficiency of the filtering can thus be increased because, for example, a certain surface of the filter element is selectively flowed through.
  • Preferably, the filter element is designed to be rotatable about a rotation axis. This makes it possible to move the areas of the filter element which extend into the clean area / into the dirt area in relation to these areas. In particular, it is possible to turn away by turning the filter element, a filter cake located thereon from these areas, so that at least a portion of the fluid is filtered through the filter element and the filter cake. The filter cake naturally has a smaller pore width than the filter element. Thus can from the part of the fluid, which by the filter cake flows, in contrast to the filter element, finer particles are filtered.
  • In particular, a region of the filter element which is not passed through until the time when the filter element is rotated can be flowed through, so that the fluid flows through a still clean region of the filter element.
  • Preferably, the filter element can be designed as a cellular wheel.
  • A cellular wheel has several cells separated by spokes separated from each other. In the present case, it may be a segmented filter element, wherein the individual segments are separated from each other by means of spokes. In this case, the bucket on at least two cells and thus at least two spokes. Preferably, the cell wheel has 4 to 12 cells and more preferably 8 cells. The spokes form the side walls of the cells. Between the spokes is the filter.
  • The design as a cellular wheel different filter areas are provided on the filter element. This allows, for example, during rotation of the filter element, a specific selection of the area used to filter the fluid.
  • The design as a cellular wheel also enables the sealing of the filter element with respect to parts or regions of the filter device, in particular, for example, with respect to a housing of the filter device. In this case, for example, the spokes of the cellular wheel may be provided with seals. These seals can be designed, for example, as brushes or as sealing lips be. Various sealing materials such as rubber, rubber, sponge rubber, etc. are known in the art.
  • The dirt area of the filter chamber and the cleaning chamber may preferably be formed in a common filter housing. Preferably, the dirt chamber and the cleaning chamber are made in one piece.
  • On the one hand, this allows a specific arrangement of the two chambers relative to one another; on the other hand, a specific sealing of the chambers relative to one another can be ensured and made possible by a one-piece or joint production, or the joint formation of the two chambers.
  • Alternatively or additionally, the clean area of the filter chamber may be formed in a separate suction housing.
  • The assembly and disassembly of the filter device is thereby easy to accomplish, the cleaning is simplified. Preferably, the filter element is arranged between the filter housing and the suction housing. It is conceivable that, for example, the suction housing is designed such that the filter housing can be introduced into the suction housing. It can remain free between these housings in the assembled state, a space for receiving the filter element. In this case, the filter element may for example be mounted on the suction housing or on the filter housing on a rotation axis.
  • The fluid connection between the cleaning chamber and the collecting container is preferably in the form of an angled tube, in particular a curved tube, in such a way that a cyclone forms in the collecting container.
  • The formation of an angled pipe, in particular as a bow tube, makes it possible to provide a desired flow in the collecting container, which enables reliable collection of coarse particles in the collecting container.
  • Alternatively, the tube may be formed as a straight tube. In this case, the tube may for example be arranged inclined or have a corresponding outlet opening, so that forms a cyclone. It would also be conceivable that the collecting container is designed such that the flow emerging from the pipe, is deflected.
  • The fluid connection between sump and filter chamber may be formed as a straight tube. This is preferably arranged centrally in the collecting container, such that the fluid can be aspirated centrally of a cyclone formed in the collecting container.
  • This allows the extraction of virtually dust-free air, on the other hand allows such an arrangement also, the assembly, service and maintenance is simplified. A desired flow in the filter chamber is thus also adjustable.
  • Preferably, a guide surface for guiding the flow is arranged in the cleaning chamber, such that a flow of the fluid entering through the suction port into the cleaning chamber is deflected in such a way that at least one vortex forms in the flow of the fluid, at least a part of the flow in the Whirl is aligned along the filter element.
  • The generation of a vortex in the flow generates forces in different directions which, when hitting a filter cake, flow or attack it in such a way, that the filter cake separates from the surface of the filter element.
  • The dissolved filter cake is torn with the flow of the fluid into the sump. However, the dissolved parts are not carried into the filter grid chamber because they are too large. When constructing the filter cake on the filter element, the individual particles or fine particles are agglomerated with each other, so that larger particles form. These larger particles are reliably separated in the second pass through the cyclone, in contrast to the first pass in which they were still too small.
  • To prevent a flow between the cleaning chamber and the filter chamber, a partition wall may be formed.
  • This partition allows on the one hand to prevent the flow, on the other hand, other elements can be arranged on this partition, such as a rotation axis for a filter element or sealing elements.
  • The filter device as described herein may comprise further elements. For example, the filter device may have a separate drive device for driving and rotating the filter element. This drive device may be formed, for example, as an electric motor. It is also conceivable to drive the filter element with a propeller. In this case, the propeller can be arranged such that it is located in the cleaning chamber. Advantageously, however, the propeller is arranged in the fluid flow downstream of the cyclone, for example in the fluid connection between the reservoir and filter chamber or in the filter chamber itself. An arrangement in the fluid flow downstream of the suction motor would also be present imaginable. It would be conceivable to lead the fluid after the suction engine in another chamber and to arrange the propeller in this chamber.
  • A manual adjustment would also be conceivable.
  • The partition wall between the filter chamber and the cleaning chamber can be formed at least in the size of a single cell of a cellular wheel of the filter element. In this case, the filter element can have seals on the spokes on the cellular wheel, which interact with the dividing wall. Preferably, at least two spokes of the cellular wheel with the partition in operative connection and seal these parts against each other. The seals may be formed, for example, as felt seals or rubber seals with or without sealing lips. The partition wall has an area which cooperates with the seals. This area is preferably in a horizontal plane. The seals can be guided over this level and strip dust or dirt from this area.
  • It is advantageous if the guide surface is formed as an integral Bestanteil the partition. Additional guide surfaces may be provided in the dirt area. These are preferably arranged such that in the dirt area a uniform flow without vortex can be generated. In this case, the guide surface may also be formed in one piece with the dividing wall in the dirty area. Alternatively, it is possible to form parts of the fins in the dirt area separately or as an integral part of, for example, the plenum.
  • Depending on the size or intended use of the filter device, it is conceivable to provide additional elements. For example, it is conceivable that the filter element in the region of Cleaning chamber is preferably acted upon by the clean surface with an air flow. That is, preferably in the region of the cleaning chamber, the filter opposite to the flow direction of the fluid in the region of the filter chamber with a fluid, in particular air flows. This air can have an overpressure, for example compressed air. It is also possible to carry out the flow only in bursts.
  • This allows already before the flow against the fluid as described herein a decrease or dissolution of the filter cake. Mechanical elements that vibrate or shake the filter element may also be provided. It is possible to operate all the proposed additional elements continuously or intermittently.
  • The filter element can, depending on the application, have different filter materials. Thus, e.g. for use in the home or in the case of allergic persons a fine dust filter can be used. In industrial use, for example, a coarse filter can be sufficient. The filter element can also be constructed in multiple layers. Preferably, the filter element is exchangeable
  • A further aspect of the invention relates to a method for filtering a fluid, in particular a method for filtering an air flow. The method is preferably performed with a device as described herein. A fluid to be filtered is passed in succession through a cleaning chamber, a collecting space and a filter chamber. In the filter chamber, the fluid is passed through a filter element. The filter element is arranged in the filter chamber such that the filter chamber is subdivided into a dirt area arranged one after the other in a flow direction and into a clean area. The filter element has a the dirt area facing Dirt surface and the clean area facing clean surface. The filter element extends into the cleaning chamber, so that the fluid is at least partially guided along the dirt surface and in particular flows past this, in such a way that a located on the filter element filter cake is detached from the dirt surface.
  • This allows automatic cleaning of the filter element.
  • The filter element can be rotated during operation. The direction of rotation may be in or opposite to the flow direction of the fluid in the cleaning chamber. The rotation can be intermittent or continuous. In this case, the filter element can preferably be driven by the air flow or by an external source.
  • A continuous use and cleaning of the filter element is thus possible.
  • It may be provided that a fluid is introduced through an air inlet opening into the cleaning chamber and is deflected in the cleaning chamber by means of a guide surface such that arise in the region of the filter element Luftverwirbelungen. By this Luftverwirbelungen a filter cake located on the filter element is released. The fluid can then be guided via an angled pipe into the sump, so that a cyclone is formed in the sump.
  • Another aspect of the invention relates to a vacuum cleaner with a filter device as described herein. Preferably, with such a vacuum cleaner, a method as described herein is performed.
  • This allows the use of the filter device both in the industrial and in the private sector.
  • In this case, the filter device can be designed both stationary and mobile.
  • It can also be provided to accommodate this filter device likewise in a separate housing, wherein only one air outlet opening and one air inlet opening are provided on the housing. Then, for example, a conventional suction device or a conventional vacuum cleaner can be connected to the air outlet opening. At the air inlet different conventional suction devices such as a suction hose or a direct connection to a machine are conceivable.
  • A filter device according to the invention will be explained by way of example with reference to the following figures. Show it:
  • FIG. 1:
    A filter device with a suction motor,
    FIG. 2:
    a filter housing with a filter element,
    FIG. 3:
    a cross section through the filter housing of Figure 3,
    FIG. 4:
    a sectional view through the filter housing FIG. 3 .
    FIG. 5:
    another sectional view through the filter housing FIG. 3 .
    FIG. 6:
    a plan view of a filter in a sectional view according to FIG. 3 .
    FIG. 7:
    a plan view of the filter device according to FIG. 3 .
    FIG. 8:
    a detailed view of the filter device according to FIG. 2 ,
  • FIG. 1 shows a filter device 100 according to the invention with a suction motor 2, which in the present case is designed as a vacuum cleaner 1. The vacuum cleaner 1 has a suction motor 2. The suction motor 2 is connected to an air outlet opening 11 of the filter device 100, and in the present case connected to a suction tube 55 with the air outlet opening 11. The filter device 100 has an air outlet opening 11 and an air inlet opening 21. In operation, the suction motor 2 generates a negative pressure in the filter device 100. A suction tube can be connected to the air inlet opening 21. Due to the negative pressure generated during operation of the suction motor 2 is formed at the air inlet opening 21 also a negative pressure. Between the air inlet opening 21 and the air outlet opening 11 thus creates a fluid flow. The fluid flow is presently not designated, but shown by the arrows. Arrows with a solid line represent the air. The air flows at the air inlet opening 21 together with coarse dust particles (roughly dashed arrows) and fine dust particles (fine dashed arrows). At the Luftaustrittsöffnugn 11 occurs only substantially clean air (solid arrow). The filter device 100 is shown partially transparent for clarity. The fluid flows during operation from the air inlet opening 21 through the cleaning chamber 20 (see FIG. 2 ) and an angled pipe, a bow pipe 24, in the collecting container 101. In the collecting container 101, a cyclone forms and the coarse dust particles are deposited at the edge and bottom of the container. The fluid then continues to flow through the dip tube 14 into the filter chamber 10. From the filter chamber 10, the fluid flows through the suction motor 2 into the environment.
  • The FIG. 2 shows a filter housing 40 of a filter device 100 (see FIG. 1 ). The filter housing 40 has a cleaning chamber 20 which is delimited by a guide surface 22. The filter housing 40 also has a portion of a filter chamber 10 (see FIG. 1 and FIG. 3 ), namely the dirt area 12. The dirt area 12 of the filter chamber 10 is separated by a partition wall 41 of the cleaning chamber 20. In the cleaning chamber 20, a collection chamber connection 23 can be seen, which is connected to a curved tube 24 into the collecting space 101 (FIG. FIG. 1 ) connected is. Central of the filter housing 40, a dip tube 14 is arranged, which the collecting space 101 (FIG. FIG. 1 ) with the dirt area 12 via a dirt area connection 15 (see FIG. 3 ) connects. In the present illustration at the top of the filter housing 40, a filter element 30 is arranged. The filter element 30 is designed as a rotary valve (see also Figure 6). One side of the filter element 30 is assigned to the dirt area 12. During operation, dust collects in this area, forming a filter cake (see also FIG. 3 ). The filter element 30 is rotatable on a central axis. The filter element can be rotated in both directions, as indicated by the arrows. Preferably, however, the filter element 30 rotates counterclockwise. In this case, the filter cake, which has formed in the dirt area 12 on the dirt surface 31, is rotated in the direction of the cleaning chamber 20. By Luftverwirbelung the filter cake within the cleaning chamber 20 of the dirt surface 31 of the filter element 30 is released and with the air flow into the collecting space 101 (FIG. FIG. 1 ) carried.
  • FIG. 3 shows a cross section through the filter device according to FIG. 1 , wherein the collecting space 101 is not shown. The cross-section extends through the plane along the end of the arc tube 24 (see FIG. 2 ). In cross section, a suction housing 50 with an air outlet opening 11 can be seen. Between the suction housing 50 and the filter housing 40, a filter element 30 is arranged. The suction housing 50 in the present case has a cover 53 in which the air outlet opening 11 is arranged. At Absauggehäuse 50 is a wall 52 for receiving the axis of rotation 35 (see FIG. 2 ) arranged. In addition, the suction housing has a cover element 51. The suction housing 50 also has an outer enclosure 54. This housing 54 extends substantially to a level in which the dirt surface 31 is located. That is, the housing 54 extends over the filter element 30. It can be provided that the filter housing 40 has an additional, separate housing or that the filter housing, as shown here, is located within a housing of the collecting space 101. It would also be conceivable that the housing 54 via the filter element 30 and the filter housing 40 (see Figures 2 and 1 ) extends together. The filter element 30 and the filter housing 40 are separated from the environment.
  • In the device according to FIG. 3 The enclosure 54 extends above the lid 53 and forms an additional space. In this example, the suction motor 2 ( FIG. 1 ) or other accessories may be arranged.
  • The filter element 30 is located within the filter chamber 10. The filter chamber 10 is presently formed by the filter housing 40 and the suction 50. During operation, the fluid flows through the dip tube 14 into the dirt area 12 and through the filter element 30 into the clean area 13. As the fluid flows through the filter element 30, a filter cake F settles on the dirt surface 31 of the filter element.
  • Clearly visible is also the cleaning chamber 20, in which the filter element extends. At the cleaning chamber 20, the air inlet opening 21 is provided. The cleaning chamber 20 is by means of the arc tube 24 with the collecting container 101 (see FIG. 1 ), this in turn by means of the dip tube 14 via the dirt area connection 15 with the dirt region 12 of the filter chamber 10. A filter cake F, which has formed on the dirt surface of the filter element 30, by turning the filter element 30 (see FIG. 2 ) is introduced into the cleaning chamber 20. The air flow that forms in the cleaning chamber makes it possible to separate the filter cake from the filter element 30 and thus to clean the filter element 30 and to provide it for reuse in the filter chamber 10.
  • The filter element 30 has at its spokes 33 (see FIG. 6 ) Sealing elements. These act on the one hand with the partition 41 and on the other hand with the cover member 51 of the suction 50 together. The sealing elements prevent impermissible air flows between the individual components of the device.
  • It is also conceivable that the partition has a further guide surface 18 (shown in dashed lines), the Dirt area 12 is assigned. Thus, the partition may have a different thickness over its course. It would also be possible to provide a second partition 17,18 (wall thickness between dashed and dotted). This makes it possible to conduct the flow around dirt area 12 advantageous. For this purpose, the partition opposite a further guide surface 16 (dash-dotted lines) may be provided. Preferably, the guide surfaces in the dirt area 12 are formed such that the flow in the dirt area 12 and in the clean area 13 is as quiet as possible and vortexes are avoided.
  • The FIG. 4 shows a cross section through the filter device according to FIG. 3 along the cross-sectional line D. Clearly visible is the geometry of the cleaning chamber 20. Lateral of the cleaning chamber 20 is the air inlet opening 21 which is connected substantially at right angles to the tangent of an outer enclosure of the cleaning chamber 20. Laterally offset from the air inlet opening 21 is a collection chamber connection 23 within the cleaning chamber 20. The cleaning chamber 20 also has a guide surface 22, through which a flow entering through the air inlet opening 21 in the cleaning chamber 20, is deflected and forms a vortex before the Flow leaves the cleaning chamber 20 through the plenum connection 23. By the guide surface 22 while desired flow conditions can be created in the cleaning chamber 20. The guide surface 22 extends from a lower region of the cleaning chamber 20 to an upper region of the cleaning chamber 20 and at the same time forms the partition to the dirt region 12 of the filter chamber 10 (see FIG. 3 ). In the dirt area 12 while the dirt area connection 15 is visible.
  • FIG. 5 shows a cross section along the line C from the FIG. 3 , It can be seen that above the guide surface 22 (see FIG. 4 ) the partition wall 41 extends horizontally (see FIG. 3 ) and thereby forms a degree. The description of the FIG. 4 identical elements were not repeated in the present case and omitted the detailed representation of the guide surface 22.
  • The partition 41 in FIG. 5 is formed of two interconnected circle segments. The circle segments are each slightly larger than a cell of the filter element 30 (see FIG. 6 ). It is thus possible that at least two spokes 33 between cells of the filter element 30 are always in contact with the dividing wall 41. This ensures that the cleaning chamber 20 is separated from the dirt area.
  • FIG. 6 shows a filter element 30, in a plan view along the cross-section B of the FIG. 3 , namely a view of the clean surface 32 (see FIG. 2 ). The filter element 30 is presently designed as a cellular wheel with eight individual cells 34. Between each cell 34 there is a web 33 with a seal which communicates with the partition wall 41 (see FIG FIG. 5 ) cooperates.
  • FIG. 7 shows a plan view along the section A of the filter device according to the FIG. 3 , In this view, only the suction housing 50 is visible. The suction housing 50 has the air outlet opening 11, which is arranged in the lid 53 of the suction housing. Also visible is the wall 52. At the suction housing, a cover element 51 is also arranged, which covers the filter element 30 in the region of the cleaning chamber 20 on the side of the clean area, so that in the region of the cleaning chamber 20 no flow through the filter element 30 may arise (see FIG. 3 ).
  • FIG. 8 shows a lateral view, substantially perpendicular to the sectional view according to FIG. 3 , Shown in FIG. 8 are the specific flow conditions within the cleaning chamber 20. FIG. 8 Thus, FIG. 1 shows the cleaning chamber 20 with a collecting chamber connection 23 with a bow tube 24 adjoining it. The air inlet opening 21 is shown by dashed lines through which the fluid enters the cleaning chamber 20. The cleaning chamber 20 is located in the filter housing 40 (see FIG. 2 ). The filter housing 40 has a bottom 41. The cleaning chamber is how to FIG. 2 explained limited by the partition 41. This partition 41 extends above the cleaning chamber 20 and forms a sealing surface for seals, which are arranged on spokes 33 of the filter element 30. The fluid flow S is shown here with arrows. In the illustration in the upper area, the filter element 30 is shown schematically, which filter element 30 at its upper side with the cover element 51 of the suction housing 50 (FIGS. FIG. 7 ) is covered. The filter element 30 rotates counterclockwise, that is, in the present illustration, from left to right. In the illustration in the left area, the filter element 30 is covered with a filter cake F. The fluid enters the cleaning chamber 20 through the air inlet opening 21. Due to the guide surface 22 only partially shown here (see FIG. 2 and FIG. 4 ), the flow of fluid is deflected and flows along the filter element 30. By the flow along the filter cake F is torn off from the filter element 30 and introduced with the flow through the collecting pipe connection 23 and the arc tube 24 in the collecting container 101. Preferably, the guide surface 22 (see FIG. 2 and FIG. 4 ) are formed such that form a plurality of vortices W along the filter element 30.
  • This favors the separation of the filter cake F from the filter element 30.

Claims (14)

  1. Filter device (100) for filtering a fluid, in particular an air stream, comprising a collecting chamber (101), a filter chamber (10), a cleaning chamber (20) and a filter element (30), the cleaning chamber (20) having an air inlet opening (21) and the Filter chamber (10) has an air outlet opening (11), wherein the cleaning chamber (20) and the filter chamber (10) by means of the collecting space (101) are in fluid communication, wherein the cleaning chamber (20), the collecting space (101) and the filter chamber (10 ) are arranged downstream one after the other in a flow direction, the filter element (30) being arranged in the filter chamber (10) such that the filter chamber (10) is divided into a dirt area (12) and a clean area (13), the filter element (30) has a dirt surface (31) facing the dirt region (12) and a clean surface (32) facing the clean region (13), characterized in that the filter element (30) is closed st partially in the cleaning chamber (20), such that the fluid is at least partially along the dirt surface (31) and in particular flows past this, such that a on the filter element (30) befindlicher filter cake (F) of the dirt surface (31) is detachable.
  2. Filter device according to claim 1, characterized in that the dirt area (12) is designed as a dust chamber (121).
  3. Filter device according to claim 1 or 2, characterized in that the clean area (13) is designed as an air chamber (122).
  4. Filter device according to one of claims 1 to 3, characterized in that the filter element (30) about a rotational axis (35) is rotatable.
  5. Filter device according to one of claims 1 to 4, characterized in that the filter element (30) is designed as a cellular wheel.
  6. Filter device according to one of claims 1 to 5, characterized in that the dirt region (12) of the filter chamber (10) and the cleaning chamber (20) in a common filter housing (40) are formed.
  7. Filter device according to one of claims 1 to 6, characterized in that the clean area (13) of the filter chamber (10) in a separate Absaugehäuse (50) is formed.
  8. Filter device according to one of claims 1 to 7, characterized in that the fluid connection between the cleaning chamber (20) and collecting container (101) is formed as an angled pipe (103), such that in the collecting container (101) forms a cyclone.
  9. Filter device according to one of claims 1 to 8, characterized in that the fluid connection between collecting container (101) and filter chamber is designed as a straight tube (104), which is preferably arranged centrally in the collecting container (101), such that the fluid centrally of a in the collecting container (101) formed cyclone is sucked.
  10. Filter device according to one of claims 1 to 9, characterized in that in the cleaning chamber (20) a guide surface (22) is arranged such that a flow of the through the suction port (21) into the cleaning chamber (20) entering fluid is deflected in such a way in that at least one vortex forms in the flow of the fluid, at least part of the flow being aligned in the vortex along the filter element (30).
  11. Filter device according to one of claims 1 to 10, characterized in that for preventing a flow between the cleaning chamber (20) and the filter chamber (10) a partition wall (41) is formed.
  12. Method for filtering a fluid, in particular an air flow, in particular with a device according to one of claims 1 to 11, wherein the fluid is successively passed through a cleaning chamber (20) a collecting space (101) and a filter chamber (10) and the fluid in the Filter chamber (10) through a filter element (30) is guided, wherein the filter element is arranged in the filter chamber (10) such that the filter chamber (10) in a successively arranged in a flow direction dirt area (12) and in a clean area (13) wherein the filter element (30) has a dirt surface (31) facing the dirt region (12) and a clean surface (32) facing the clean region (12), characterized in that the filter element (30) is inserted into the cleaning chamber (20). extends, and that the fluid at least partially along the dirt surface (31) is guided and in particular flows past it, such that a in Fi Filter element (30) located filter element (F) is removed from the dirt surface (31).
  13. A method as claimed in any one of claims 12, characterized in that the filter element (30) is rotated during operation in or opposite to the flow direction of the fluid in the cleaning chamber (20), the rotation being intermittent or continuous, the filter element preferably being characterized by Air flow or driven by an external source.
  14. Vacuum cleaner comprising a device according to one of claims 1 to 11, in particular for carrying out a method according to one of claims 12 to 13.
EP16201873.3A 2016-12-02 2016-12-02 Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner Withdrawn EP3329822A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16201873.3A EP3329822A1 (en) 2016-12-02 2016-12-02 Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16201873.3A EP3329822A1 (en) 2016-12-02 2016-12-02 Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner
EP17201239.5A EP3329824B1 (en) 2016-12-02 2017-11-13 Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner

Publications (1)

Publication Number Publication Date
EP3329822A1 true EP3329822A1 (en) 2018-06-06

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EP16201873.3A Withdrawn EP3329822A1 (en) 2016-12-02 2016-12-02 Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner
EP17201239.5A Active EP3329824B1 (en) 2016-12-02 2017-11-13 Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner

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EP17201239.5A Active EP3329824B1 (en) 2016-12-02 2017-11-13 Filter device for filtering a fluid, method for filtering a fluid and vacuum cleaner

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344278A (en) * 1998-12-02 2000-06-07 Samsung Kwangju Electronics Co A cyclone dust collecting device positionable at the extension pipe of a vacuum cleaner
DE10247655A1 (en) 2002-05-11 2003-11-27 Samsung Kwangju Electronics Co Cyclone dust collector for vacuum cleaners
EP2033562A2 (en) * 2007-09-05 2009-03-11 Samsung Gwangju Electronics Co., Ltd. Cyclone dust-separating apparatus of vacuum cleaner
US20090178568A1 (en) * 2008-01-16 2009-07-16 Samsung Gwangju Electronics Co., Ltd. Cyclone dust-separating apparatus and cleaner having the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2344278A (en) * 1998-12-02 2000-06-07 Samsung Kwangju Electronics Co A cyclone dust collecting device positionable at the extension pipe of a vacuum cleaner
DE10247655A1 (en) 2002-05-11 2003-11-27 Samsung Kwangju Electronics Co Cyclone dust collector for vacuum cleaners
EP2033562A2 (en) * 2007-09-05 2009-03-11 Samsung Gwangju Electronics Co., Ltd. Cyclone dust-separating apparatus of vacuum cleaner
US20090178568A1 (en) * 2008-01-16 2009-07-16 Samsung Gwangju Electronics Co., Ltd. Cyclone dust-separating apparatus and cleaner having the same

Also Published As

Publication number Publication date
EP3329824A1 (en) 2018-06-06
EP3329824B1 (en) 2019-07-31

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