EP4683723A1 - Dispositif de filtration pour un milieu gazeux, élément filtrant, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration - Google Patents

Dispositif de filtration pour un milieu gazeux, élément filtrant, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration

Info

Publication number
EP4683723A1
EP4683723A1 EP24707730.8A EP24707730A EP4683723A1 EP 4683723 A1 EP4683723 A1 EP 4683723A1 EP 24707730 A EP24707730 A EP 24707730A EP 4683723 A1 EP4683723 A1 EP 4683723A1
Authority
EP
European Patent Office
Prior art keywords
filter
housing part
filter element
axis
radially
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.)
Pending
Application number
EP24707730.8A
Other languages
German (de)
English (en)
Inventor
Klaus-Dieter Ruhland
Michael Kaufmann
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP4683723A1 publication Critical patent/EP4683723A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02—Gaskets, sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02—Gaskets, sealings
    • B01D2271/022—Axial sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/60—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for the intake of internal combustion engines or turbines

Definitions

  • Filter device for gaseous medium, filter element, use of a filter element and method for assembling a filter device
  • the invention relates to a filter device for gaseous medium, in particular air, comprising a filter housing with at least one inlet opening for gaseous medium to be cleaned and at least one outlet opening for cleaned gaseous medium, wherein in the filter housing between the at least one inlet opening and the at least one outlet opening at least one filter element, which has at least one filter medium body, is arranged such that it separates a raw side assigned to the at least one inlet opening from a clean side assigned to the at least one outlet opening, wherein the filter housing comprises a first housing part on which the outlet opening is arranged and which has at least one filter element receiving space in which the at least one filter element is arranged, and wherein the filter housing comprises a second housing part on which the at least one inlet opening is arranged and which has at least parts of at least one cyclone separator, wherein the second housing part closes a service opening of the first housing part and the first housing part and the second housing part are detachably connected to one another and separable from one another in order to
  • the invention relates to a filter element for a filter device for gaseous fluid, in particular air, in particular for an air filter device, in particular for a filter device according to the invention, with at least one filter medium body
  • the filter device comprises a filter housing with at least one inlet opening and at least one outlet opening, wherein the filter element can be received in the filter housing between the at least one inlet opening and the at least one outlet opening in order to separate a raw side associated with the at least one inlet opening from a clean side associated with the at least one outlet opening
  • the filter housing comprises a first housing part on which the at least one outlet opening is present and which has a filter element receiving space in which the filter element can be arranged
  • the filter housing comprises a second housing part, on which the at least one inlet opening is present and which has at least parts of at least one cyclone separator, wherein the first and the second housing part are detachably connected to one another and can be separated from one another in order to be able to remove the
  • the invention relates to the use of a filter element, in particular a filter element for gaseous medium, in particular an air filter element, comprising at least one filter medium body in a filter device according to the invention, in particular an air filter device, wherein the filter element has at least one support section which projects radially beyond the filter medium body with respect to an imaginary axis, at least partially encircles the axis and is supported on at least one axial contact surface with respect to the axis of a radially projecting collar of the first housing part which at least partially encircles the axis, wherein the at least one support section of the filter element has at least one recess into which at least one corresponding elevation present on the at least one axial contact surface of the radially projecting collar of the first housing part engages.
  • the invention also relates to a method for assembling a filter device for gaseous media, in particular a filter device according to the invention, in which at least one filter element having at least one filter medium body is introduced through a service opening into a filter element receiving space of a first housing part, which has at least one outlet opening for purified gaseous medium, of a filter housing of the filter device, wherein the first housing part has a radially projecting collar which at least partially surrounds an imaginary housing axis and which provides at least one axial contact surface with respect to the housing axis, on which at least one elevation is arranged, and the at least one filter element has at least one support section which projects radially over the at least one filter medium body with respect to a filter element axis, at least partially surrounds the filter element axis and has at least one recess, wherein when the at least one filter element is introduced through the service opening, the housing axis and the filter element axis are arranged in parallel and the at least one filter element is aligned relative
  • an air filter for internal combustion engines which comprises a housing with a removable cover in which a chamber is provided which receives a main filter element which is replaceable and is provided with a seal which can be arranged between the housing and the cover.
  • the seal comprises at least one centering seat or projection for receiving a corresponding centering projection or seat provided on the cover or on the housing when the main filter element is in the housing and the housing is closed by the cover.
  • the seal comprises a plurality of centering seats which are designed to each receive a corresponding axial centering projection provided on the housing when the main filter element is in the housing and the housing is closed by the cover.
  • the invention is based on the object of creating a filter device, a filter element, the use of a filter element and a method for assembling a filter device, in which the filter device is improved, in particular the filter device is improved in terms of functionality, assembly and/or assembly.
  • the risk of incorrect assembly in particular incorrect installation of at least one filter element or installation of an incorrect filter element, is to be reduced.
  • the object is achieved according to the invention in the filter device in that an arrangement of the at least one elevation on the at least one axial contact surface of the radially projecting collar of the first housing part and the at least one corresponding recess of the at least one support section of the at least one filter element is such that a clear installation position of the at least one filter element in the first housing part results.
  • the first housing part has at least one elevation which, when the filter element is correctly installed, engages in a corresponding recess in the filter element.
  • the at least one elevation and the at least one corresponding recess are arranged in such a way that they can only correspond in a single, unambiguous installation position, in particular rotational orientation with respect to a longitudinal axis, of the filter element in the housing part.
  • the interaction of the at least one elevation with the corresponding recess prevents the at least one filter element from being installed in a different installation position.
  • a filter element which does not have the required recess can be installed. In this way, the overall risk of incorrect assembly can be reduced, both in relation to the incorrect installation of at least one filter element and in relation to the installation of an incorrect, i.e. unsuitable, filter element.
  • Axial contact surface means that a relative degree of freedom of movement with respect to the axial direction can be blocked by contacting the circumferential support section of the filter element.
  • the at least one axial contact surface can extend circumferentially and in the radial direction. In this way, the freedom of movement of the circumferential support section in the axial direction can be limited.
  • the at least one elevation is a structure protruding in the axial direction from the at least one axial contact surface.
  • the at least one recess is a depression in the at least one support section of the filter element.
  • the filter device and the filter element can be used in particular in vehicles, in particular motor vehicles, in construction and/or agricultural machinery, compressors, in connection with internal combustion engines, in cathode filters, in particular in connection with fuel cells.
  • the gaseous medium to be cleaned can be air.
  • the filter device can also be referred to as an air filter device.
  • the filter device can be used to remove liquid or solid particles, for example dust particles, from the gaseous medium.
  • the axis can coincide with a housing axis of the filter housing, an installation/removal axis of the at least one filter element in the first housing part, a connection axis of the first housing part with the second housing part and/or an element axis of the at least one filter element.
  • the at least one cyclone separator in particular a cyclone block with several cyclone separators, can have at least one particle discharge device, in particular a dust discharge device.
  • particles which are separated from the gaseous medium to be cleaned by the at least one cyclone separator can be removed from the cyclone separator, in particular the cyclone block.
  • the at least one cyclone separator can be an axial cyclone.
  • the filter device can have at least one cyclone block which has a plurality of cyclone separators. In this way, a larger gas flow can be cleaned and the available installation space can be optimally utilized.
  • the at least one inlet opening and the at least one outlet opening can be located on sides of the filter housing that are axially opposite with respect to the axis. In this way, the filter device as a whole can be constructed axially.
  • the at least one filter medium body can have at least one filter bellows, in particular at least one single bellows and/or at least one double bellows.
  • a filter bellows With a filter bellows, the ratio between active filter surface and required installation space can be improved in favor of the filter surface.
  • the filter medium body can comprise a filter medium suitable for filtering gaseous medium, in particular air, in particular filter paper, filter fleece, filter foam or the like.
  • gaseous medium in particular air, in particular filter paper, filter fleece, filter foam or the like.
  • the filter medium of the at least one filter medium body can advantageously be folded or wound. In this way, the active filter surface can be increased.
  • the filter element can accordingly be designed as a folded filter element or as a wound element.
  • the at least one filter element can be a compact filter element, a hollow filter element, a flat filter element or the like.
  • the filter medium body can advantageously have at least one filter medium folded in a zigzag shape with deep folds.
  • deep folds are particularly present when a fold height is at least as large as the extension in the direction of the fold edges and/or in the direction transverse to the fold edges.
  • a hollow filter element is characterized in that it has at least one element interior which is surrounded by filter medium.
  • the hollow filter element can advantageously be a so-called round filter element with a round cross-section, an oval round filter element with an oval cross-section, a flat-oval round filter element with a flattened oval cross-section, a conical round filter element in which the round cross-section tapers in the axial direction towards a main axis, a conical-oval round filter element in which the oval cross-section tapers in the axial direction at least in the direction of a transverse axis, a conical flat-oval round filter element in which the flat-oval cross-section tapers in the axial direction at least in the direction of a transverse axis, or a hollow filter element with a different type of cross-section, in particular a square one, and/or a different type of axial cross-section in the direction of an element axis.
  • the raw side is the side on which the gaseous medium to be cleaned is located when the filter device is in operation.
  • the clean side is the side on which the cleaned gaseous medium is located.
  • the first housing part has an at least partially circumferential, radially projecting collar, which provides at least one axial contact surface on which at least one radially projecting support section of the filter element is supported. In this way, the circumferential seal can additionally be supported on the first housing part in the axial direction with respect to the axis. A further sealing area can be created there. In the further sealing area, the at least one circumferential seal can have a sealing effect in the axial direction.
  • the radially projecting collar of the first housing part can extend continuously, in particular circumferentially, or can be interrupted.
  • the projecting collar can have at least two axial contact surfaces, in particular four axial contact surfaces, which are located at different axial heights.
  • the collar can have at least two collar sections, in particular four collar sections, with respective contact surfaces, which each extend partially around the axis. In this way, further protection against incorrect assembly of the filter device can be realized. In particular, incorrect orientation of the at least one filter element, the first housing part and the second housing part during assembly can be prevented even more reliably.
  • several elevations can be arranged on the at least one axial contact surface of the radially projecting collar of the first housing part and/or several corresponding recesses can be arranged in the at least one support section of the filter element.
  • the clear installation position can be defined even more precisely.
  • redundancy in relation to the clear installation position can also be achieved.
  • the at least one axial contact surface of the radially projecting collar of the first housing part with the at least one elevation may not have any rotational symmetry with respect to the axis and/or the at least one support section of the filter element with the at least one recess may not have any rotational symmetry with respect to the axis.
  • a clear installation position of the at least one filter element in the first housing part can be realized with the at least one elevation and the at least one corresponding recess.
  • the clear installation position is defined by a specific angular position or rotational orientation around the axis.
  • the internal dimensions of the at least one recess of the at least one filter element can be at least as large as the external dimensions of the at least one elevation of the first housing part corresponding to the at least one recess and/or the at least one recess of the at least one filter element and the corresponding at least one elevation of the first housing part can be complementary.
  • the at least one elevation can engage in the corresponding corresponding at least one recess.
  • “corresponding” can mean that the at least one recess of the circumferential support section of the filter element forms a negative form of the corresponding at least one elevation on the axial contact surface of the radially projecting collar.
  • the at least one recess and the corresponding corresponding at least one elevation are complementary.
  • a clearance in particular a defined clearance, can remain between the at least one elevation and the corresponding at least one recess.
  • the clearance can be realized, for example, with respect to the axis at the height of the elevation or depth of the corresponding recess, with respect to the axis in the circumferential direction and/or transversely to the circumferential direction.
  • a clearance fit can be realized between the at least one elevation and the at least one corresponding recess.
  • At least two elevations can be arranged on the at least one axial contact surface of the first housing part, which can differ in their extent in the circumferential direction, in their height and/or in their extent transverse to the circumferential direction, in particular in the radial direction.
  • the at least one support section of the at least one filter element can have at least two recesses, which can differ in their extent in the circumferential direction, in their height and/or in their extent transverse to the circumferential direction, in particular in the radial direction.
  • At least two elevations that differ in their shape, dimension and/or orientation can be arranged on the at least one axial contact surface of the first housing part, and the at least one support section of the at least one filter element can have at least two recesses that correspond to the elevations and differ in their shape, dimension and/or orientation. In this way, protection against incorrect assembly can be further improved.
  • the at least one elevation and the corresponding at least one recess can be designed as a mirror image with respect to an imaginary plane running perpendicular to the imaginary axis.
  • the at least one filter element can have a seal on an inflow side facing the second housing part, which seal runs around the imaginary axis and has a sealing section that acts at least partially radially to the axis and runs around the axis, wherein a peripheral side of the sealing section that is radially outer with respect to the axis is in sealing contact with an inner surface of the first housing part that is radially inner with respect to the axis.
  • a rib that protrudes from the second housing part at least with a directional component in the axial direction with respect to the axis and runs at least partially around the axis can exert a contact force on the circumferential seal in order to press the circumferential sealing section that acts at least partially radially to the inner surface of the first housing part.
  • the filter element receiving space can be sealed from the environment using the seal.
  • the dirty side of the filter element can be separated from the clean side.
  • the second housing part can have a circumferential rib with which a contact force can be exerted on the circumferential seal when the filter device is assembled.
  • a circumferential sealing section that has at least a partially radial sealing effect can be pressed against an inner circumferential surface of the first housing part.
  • the sealing section acting at least partially in the radial direction can ensure that a sealing surface of the seal on the side of the at least one filter element has a clearance, in particular a radial gap, to a counter surface of the filter housing, namely the inner surface of the first housing part, when the first housing part is not clamped to the second housing part. Only when the second housing part is clamped to the first housing part is the circumferential sealing section pressed against the inner surface of the first housing part. This creates the sealing effect between the first housing part, the second housing part and the filter element.
  • a cyclone block which has the at least one cyclone separator, can be sealed axially with respect to the axis by the seal.
  • the design of the filter device allows for easy installation of the filter element into the filter housing without the application of force.
  • the seal can be clamped by axially clamping the first housing part to the second housing part.
  • a lever effect of suitable locking elements can be used for this purpose.
  • the seal can be used to prevent particles and/or water from entering the clean side between the at least one filter element and the filter housing.
  • particles and/or water can also be prevented from entering an area between the at least one filter element and the second housing part, in particular a dip tube plate and/or a cyclone block.
  • a contact area of the sealing section in which the sealing section rests radially against the inner surface of the first housing part in a sealing manner, can be arranged at an axial distance from the at least one axial contact surface of the collar. In this way, a region can be created between the sealing section and the inner surface of the first housing part in which the at least one sealing section does not rest against the inner surface.
  • the second housing part can be clamped to the first housing part by means of a clamping device.
  • the clamping device can be used to implement a pressing force acting at least in the axial direction between the first housing part and the second housing part.
  • the clamping device can be detachable. In this way, the first housing part can be separated from the second housing part.
  • the clamping device can have at least one clamping element, in particular at least one screw, at least one clamping hook and/or at least one snap hook or the like. In this way, the clamping device can be easily clamped and released again.
  • the clamping device can engage directly on the second housing part.
  • the second housing part can be clamped directly to the first housing part.
  • the clamping device can engage on a cyclone housing, between which the first housing part and the second housing part can be arranged. In this way, several housing parts can be connected to one another.
  • the rib can be arranged firmly, in particular with respect to the pressure load, in particular stationary, on the second housing part.
  • the rib can be displaced with the second housing part during axial assembly of the first housing part and the second housing part with the interposition of the at least one filter element. This would not be possible if the second housing part were part of the at least one filter element.
  • the rib can be displaced with the second housing part during assembly by the clamping effect of a clamping device.
  • the at least one filter element can comprise at least one frame element that extends at least partially around the circumference and is connected to the at least one filter medium body, wherein in particular a surface of the at least partially extending frame element is exposed at least in sections, and wherein in particular at least one exposed section of the frame element at least co-forms the at least one radially projecting support section of the at least one filter element, which is supported on the at least one axial contact surface of the radially projecting collar of the first housing part.
  • the at least one support section of the at least one filter element can be stably connected to the filter medium body and a rigid, positive-locking contact of the filter element on the housing can be realized.
  • the at least one filter element can have at least one circumferential seal, which is delimited at an axial end facing away from the second housing part by at least one circumferential frame element. In this way, the at least one seal can be supported on the at least one frame element in the axial direction.
  • the at least one frame element can be connected to the filter medium body.
  • the filter medium body can be supported by the at least one frame element.
  • the at least one frame element in particular a surface of the frame element, can be exposed at least in sections.
  • On the exposed surface at least one support surface of the at least one filter element can be realized.
  • a rigid, positive-locking contact of the filter element on the housing can be realized via the support surface.
  • the frame element in particular at least one exposed section of the frame element, can at least form a radially projecting support section of the filter element, which is supported on an axial contact surface of a radially projecting collar of the first housing part.
  • the circumferential seal can be supported even better on its side axially facing away from the second housing part.
  • the at least one frame element can comprise or consist of plastic.
  • the frame element can be made robust and lightweight.
  • the term "plastic frame" can also be used for the at least one frame element.
  • the at least one frame element can advantageously comprise or consist of at least one other material, in particular metal, carbon fibers or a composite material.
  • the at least one frame element can be part of a skeleton of the at least one filter element and/or connected to a skeleton of the at least one filter element.
  • the at least one filter medium body can be held on the skeleton.
  • the at least one filter element can be stabilized and kept in shape by the skeleton.
  • At least part of the skeleton can comprise or consist of plastic, metal, carbon fibers or a composite material.
  • the skeleton in particular the skeleton with the at least one frame element, can be realized in one piece.
  • the skeleton can be realized in a particularly stable manner.
  • the at least one frame element can also be realized as a component separate from the skeleton.
  • the at least one recess can be formed on a frame element of the at least one filter element.
  • the at least one recess can have a continuous boundary wall, in particular the at least one recess can be formed as a closed pocket. In this way, force transmission between the at least one elevation and the filter element can be improved.
  • the continuous boundary wall enables the at least one elevation to be centered in the at least one recess with respect to the axis circumferentially and radially.
  • the boundary wall can surround an opening of the recess for the corresponding corresponding elevation.
  • a recess which has a boundary wall surrounding the opening and extending to the side opposite the opening can be referred to as a closed pocket.
  • the at least one filter element can comprise at least one circumferential frame element, wherein the at least one frame element can extend from the at least one exposed section at least in sections in the axial direction in the direction of the inflow side and/or radially inward.
  • the at least one frame element can be enclosed at least in sections by material of the circumferential seal.
  • the at least one frame element can extend at least partially in the axial direction in the direction of the inflow side and/or radially inward. In this way, a stabilization of the at least one filter medium body can be achieved. Furthermore, in this way, part of the frame element can serve as a casting shell for the material of the seal.
  • the at least one frame element can advantageously be enclosed at least in sections by material of the circumferential seal. In this way, a supporting effect for the seal can be improved.
  • a rib protruding from the second housing part can support a circumferential sealing section of the at least one filter element, which has an at least partially radially sealing effect, on a radially inner circumferential side of the sealing section, in particular on a radially inner circumferential side of the sealing section that is radially opposite the inner circumferential surface of the first housing part.
  • the sealing section with the rib can be pressed, in particular directly, onto the inner circumferential surface of the first housing part.
  • a pressing force exerted by the rib can have at least one directional component which is directed from radially inward to radially outward with respect to the axis.
  • the corresponding sealing section can be pressed directly with the radial sealing force radially outward against the inner circumferential surface of the first housing part.
  • the pressing force exerted by the rib can thus directly apply the radial sealing force.
  • the pressing force exerted by the rib can have a directional component that is directed at least parallel to the axis. In this way, the at least one seal can be pressed in the axial direction.
  • the sealing material can escape the pressing radially outwards and thus be pressed radially against the inner surface of the first housing part.
  • the contact pressure exerted by the rib can thus generate the radial sealing force indirectly, in particular by deforming the seal in the transverse direction.
  • At least the sealing section of the circumferential seal in the filter housing mounted with the at least one filter element can be deformed compared to the at least one filter element that is not mounted.
  • the corresponding sealing section can thus be flexibly pressed against the inner surface of the first housing part.
  • a rib protruding from the second housing part can contact a seal surrounding the axis of the at least one filter element at a free rib edge axially with respect to the axis, which faces the second housing part, with a directional component of the contact pressure acting in the axial direction with respect to the axis.
  • the circumferential seal can be deformed by pressing, in particular in the transverse direction. The deformed seal can thus be pressed at least partially radially against the inner surface of the housing in an effective sealing manner.
  • the rib can contact the circumferential seal on an upstream end face in the axial direction, in particular directly, in order to cause a deformation of the circumferential seal and thereby press the partially radially effective circumferential sealing section against the inner circumferential surface of the first housing part.
  • the second housing part can have a protruding rib and the at least one filter element can have a seal with at least one sealing section that runs around the axis, wherein the rib can be ramp-shaped at least in sections.
  • a contact surface of the rib facing the radially inner circumferential side of the circumferential sealing section that has at least a partial radial sealing effect can form an acute angle with the axis.
  • the rib can slide along the radially inner circumferential side of the sealing section during axial assembly of the first housing part and the second housing part and press it successively against the inner surface of the first housing part. Due to the wedge effect between the "angled" rib and the sealing section, high radially acting sealing preload forces can be achieved with manageable axial assembly forces.
  • the at least one filter element can have a seal with at least one sealing section that runs around the axis, wherein the at least partially radially sealingly acting circumferential sealing section can be offset radially outward at least in sections relative to an outer surface of the filter medium body that is radially outer with respect to the axis.
  • the at least partially radially sealingly acting circumferential sealing section can project axially beyond the inflow side of the filter medium body at least in sections.
  • the filter device can have a cyclone block with several cyclone separators, wherein the cyclone block comprises a dip tube plate as the second housing part of the filter housing, which has a plurality of dip tubes, and a circumferential rib is formed on the dip tube plate.
  • the at least one inlet opening can be arranged or formed on the at least one part of the at least one cyclone separator, in particular on a dip tube of the at least one cyclone separator.
  • the second housing part can comprise parts of a cyclone block, which has several cyclone separators.
  • the second housing part can have or be a dip tube plate with at least one dip tube of a cyclone separator.
  • the second housing part can have several dip tubes of corresponding cyclone separators.
  • the second housing part can be arranged between the first housing part and a cyclone housing a cyclone block to which the at least one cyclone separator belongs. In this way, the filter device can be designed compactly with at least one filter element and at least one cyclone block. With the cyclone block with a plurality of cyclone separators, an efficient pre-separation of particles from the gaseous medium to be cleaned can take place and the installation space required for the pre-separation can be minimized.
  • the second housing part can have a protruding rib and the at least one filter element can have a seal surrounding the axis with at least one sealing section, wherein an upstream axial end of the circumferential seal can project beyond a free end of the rib of the second housing part when viewed in the axial direction to the axis.
  • the rib can project beyond a free end of the circumferential seal, in particular of the at least one sealing section, when viewed in the axial direction to the axis.
  • the rib can dip into a recess in the circumferential seal, which is open on its side facing the upstream side with respect to the axis.
  • the second housing part can have at least one dip tube of at least one cyclone separator, which has an outflow end on its side facing the upstream side of the at least one filter element, which is surrounded at least in sections by a dip tube edge section, wherein the dip tube edge section can be located radially inside the sealing section at an axial distance from the free end of the circumferential seal when the filter device is mounted.
  • the dip tube edge section can advantageously be located at an axial distance from the free end of the seal radially inside the sealing section.
  • the outflow end can advantageously be located beyond the upstream axial free end of the circumferential seal when viewed axially.
  • the dip tube edge section surrounding the outflow end at least in sections, and thus also the outflow end of the at least one dip tube, can, when viewed axially, dip behind the free end of the circumferential seal and thus behind the upstream end of the at least one filter element.
  • the second housing part can have a protruding rib and the at least one filter element can have a seal with at least one sealing section running around the axis, the first housing part and the second housing part forming a sealing chamber in which the at least partially radially effective circumferential sealing section is accommodated, the sealing chamber being delimited radially on the inside by the rib of the second housing part, radially on the outside by the inner circumferential surface of the first housing part and axially by a collar connected to the second housing part, in particular by a collar of a further part connected to the second housing part.
  • the collar can provide an axial sealing surface against which the circumferential seal rests in a sealing manner in the axial direction. In this way, sealing towards the outside, in particular towards the environment, is made possible.
  • the sealing chamber can be axially delimited on the inflow side by a collar connected to the second housing part, in particular by a collar of a further part connected to the second housing part.
  • the second housing part can have a protruding rib and the at least one filter element can have a seal with at least one sealing section running around the axis, wherein in a state of the filter device in which the at least one filter element is arranged in the at least one filter element receiving space and the second housing part is detached from the first housing part, there is a radial gap between the inner circumferential surface of the second housing part and the radially outer circumferential side of the circumferential sealing section which at least partially acts as a radial seal.
  • the at least one filter element can be moved in the axial direction into or out of the filter element receiving space without the circumferential sealing section which acts as a radial seal rubbing against the inner circumferential surface of the second housing part, whereby the assembly forces can be minimized.
  • the first housing part in particular the radially projecting collar, can have a collar wall surrounding the axis, which surrounds the service opening and which projects beyond the axial contact surface of the radially projecting collar on the side axially facing away from the filter element receiving space.
  • the collar wall can surround the axial contact surface of the radially projecting collar of the first housing part and the at least one elevation radially on the outside.
  • the axial contact surface of the radially projecting collar of the first housing part, on which the at least one elevation is present can be axially set back from a plane in which the service opening is located.
  • the axial contact surface and the at least one elevation can be protected from the environment by corresponding sections of the radially projecting collar.
  • “Axially recessed” can mean axially removed from the upstream side in the axial direction.
  • an inner circumferential surface of the first housing part, against which an at least partially radially effective circumferential sealing section of a circumferential seal can rest, can be located immediately adjacent to the axial contact surface. In this way, the seal can be realized in the vicinity of the service opening.
  • a free edge of a collar wall on the inflow side can be connected to an inner circumferential surface of the first housing part, on which an at least partially radially sealing element, the axis circumferential sealing section of a seal that runs around the axis can be located axially adjacent, in particular in the same plane as the service opening.
  • the service opening can be realized in the area of the free edge of a collar wall.
  • the filter medium body can have a cross-sectional shape that has at least two curved sides that are connected by two, in particular, straight sides.
  • the filter medium body can have a radially outer filter medium section and a radially inner filter medium section, which are each connected circumferentially with respect to the axis, wherein the radially inner filter medium section is arranged within the radially outer filter medium section.
  • an outer jacket of the filter medium body, in particular of a radially outer filter medium section of the filter medium body can have a long, oval cross-section.
  • an inner jacket of the filter medium body in particular of a radially inner filter medium section of the filter medium body, can have a long, oval cross-section.
  • an outer jacket of the filter medium body, in particular of a radially outer filter medium section of the filter medium body can taper, in particular conically, when viewed from the inflow side in the direction of the axis.
  • an inner casing of the filter medium body, in particular of a radially inner filter medium section of the filter medium body can taper, in particular conically, when viewed from the downstream side in the direction of the axis. In this way, a filter element can be realized which has an improved ratio between space requirement and filter area in favor of the filter area.
  • At least one filter medium section can be implemented as a filter bellows.
  • the filter medium can be folded. In this way, an increase in the active filter surface can be achieved.
  • At least one filter medium section of the filter medium body in particular a radially outer filter medium section of the filter medium body, can be flowed through from radially inside to radially outside.
  • at least one filter medium section of the filter medium body in particular a radially inner filter medium section of the filter medium body, can be flowed through from radially outside to radially inside. In this way, a ratio between axial expansion and radial expansion of the filter element can be improved.
  • the at least one filter medium body can comprise at least two filter bellows, in particular an inner filter bellows and an outer filter bellows, in particular at least two folded filter bellows, which extend at least partially around the axis and through which gaseous medium to be cleaned can flow in parallel.
  • an inner filter bellows of the at least one filter medium body can be arranged in an interior space enclosed by an outer filter bellows of the at least one filter medium body.
  • the at least one filter medium body can have at least one filter bellows, in particular an inner filter bellows and/or an outer filter bellows, which has an inclination relative to the axis.
  • Parallel flow means that the filter bellows are arranged in a functionally parallel manner, particularly with regard to the flow of the gaseous medium. It does not mean that the filter bellows are arranged in parallel in the geometric sense. The gaseous medium to be cleaned flows through the filter bellows in a functionally parallel manner. In contrast, when the filter bellows are arranged in series, the flow through them is successive, i.e. serial.
  • the filter device can have at least one further filter element, in particular a secondary filter element, which is arranged downstream of the at least one filter element, in particular the filter element, in particular a main filter element, with the at least one support section.
  • a further filter element in particular a secondary filter element, which is arranged downstream of the at least one filter element, in particular the filter element, in particular a main filter element, with the at least one support section.
  • the at least one further filter element in particular the secondary filter element, can be arranged in the filter element receiving space spatially between the filter element with the at least one support section and the at least one outlet opening of the filter housing.
  • the filter device can be constructed more compactly.
  • the object is achieved according to the invention in the filter element in that an arrangement of the at least one recess of the at least one circumferential support section of the filter element is such that in an assembled state in which the at least one corresponding elevation on the at least one axial contact surface of the radially projecting collar of the first housing part engages in this, a clear installation position of the filter element in the first housing part results.
  • a filter element is realized which enables a clear installation in the first housing part with the aid of at least one specially arranged recess in connection with at least one corresponding elevation on the side of the first housing part. In this way, it can be recognized at the latest when assembling the filter device whether the correct filter element with the required at least one recess is being used. Furthermore, the filter element must be oriented in such a way that the at least one recess corresponds to the corresponding elevation on the side of the first housing part. Overall, the risk of incorrect assembly can be significantly reduced in this way.
  • the object is achieved according to the invention in use in that an arrangement of the at least one elevation on the at least one axial contact surface of the radially projecting collar of the first housing part and the at least one corresponding recess of the at least one support section of the at least one filter element is such that a clear installation position of the at least one filter element in the first housing part results.
  • the object is achieved according to the invention in the method in that by means of the arrangement of the at least one elevation on the at least one axial contact surface of the radially projecting collar of the first housing part and the at least one corresponding recess of the at least one support section of the at least one filter element, the at least one filter element is arranged in a clear installation position in the first housing part.
  • the at least one filter element is simply and clearly introduced into the filter housing.
  • the installation of the filter element in the filter element receiving space of the first housing part and the attachment of the second housing part to the first housing part can be carried out in the axial direction with respect to at least one of the axes, which are the housing axis and the filter element axis.
  • the circumferential seal can be clamped by means of clamping means which engage between the first housing part and the second housing part.
  • Figure 1 is an isometric view of a filter device for gaseous media according to a first embodiment, with a cyclone block viewed from the side of an outlet nozzle;
  • Figure 2 shows a longitudinal section through the filter device from Figure 1;
  • Figure 3 is a detailed view of a main filter element of the filter device of Figures 1 and 2 in the region of a circumferential seal;
  • Figure 4 is a detailed view of a longitudinal section of a housing pot of the filter device from Figures 1 and 2 in the region of a collar of the housing pot surrounding a service opening;
  • Figure 5 is an isometric representation of a skeleton of a main filter element of the filter device from Figures 1 and 2, viewed from the upstream side of the main filter element;
  • Figure 6 is a detailed view of a longitudinal section of a dip tube plate of the cyclone block of the filter device of Figures 1 and 2;
  • Figure 7 is a detailed view of the longitudinal section through the filter device of Figure 2 in the area of a Connection of the housing pot and the cyclone block;
  • Figure 8 is an isometric view of a housing pot of a filter device for gaseous media according to a second embodiment
  • Figure 9 is an axial view of the housing pot from Figure 8 viewed in the direction of a service opening;
  • Figure 10 is an isometric view of a main filter element for installation in the housing pot from Figures 8 and 9 of the filter device according to the second embodiment;
  • Figure 11 is an axial view of the main filter element of Figure 10 viewed towards the downstream side.
  • FIGS 1 to 6 show a filter device 10 according to a first embodiment for gaseous media and its components in different representations.
  • the filter device 10 can be used to free gaseous media, for example air, from solid particles, for example dust.
  • the filter device 10 can be used in vehicles, for example motor vehicles, in construction and/or agricultural machinery, compressors in connection with internal combustion engines, in cathode filters, for example in connection with fuel cells, or the like.
  • the filter device 10 comprises, as shown for example in an exploded view in Figure 2, a housing pot 12, a post-filter element 14, a main filter element 16, a dip tube plate 18 and a cyclone housing 20.
  • the filter device 10 is constructed axially with respect to an axis 22.
  • the axis 22 can coincide with a housing axis of the housing pot 12, an installation/removal axis of the post-filter element 14 and the main filter element 16 into the housing pot 12 or out of the housing pot 12, a connection axis of the dip tube plate 18 with the housing pot 12, a connection axis of the cyclone housing 20 with the dip tube plate 18, a connection axis of the cyclone housing 20 with the housing pot 12, an element axis of the post-filter element 14, an element axis of the main filter element 16, a housing axis of the housing pot 12, a plate axis of the dip tube plate 18 and/or a housing axis of the cyclone housing 20.
  • the dip tube plate 18 and the cyclone housing 20 form a cyclone block 24.
  • the housing pot 12 as a first housing part
  • the dip tube plate 18 as a second housing part in the connected state
  • a filter housing 26 When the filter device 10 is mounted, the dip tube plate 18 is connected to the cyclone housing 20, for example by means of screws.
  • the housing pot 12 is made in one piece.
  • the housing pot 12 is made of plastic, for example a hard plastic.
  • the housing pot 12 has a housing wall 30 which surrounds the axis 22 in a continuous manner.
  • a housing base 32 adjoins the housing wall 30.
  • the housing wall 30 surrounds a service opening 34.
  • the housing wall 30 and the housing base 32 delimit a filter element receiving space 36 of the housing pot 12.
  • the post-filter element 14 and the main filter element 16 are arranged in the filter element receiving space 36.
  • the post-filter element 14 and the main filter element 16 can be introduced into the filter element space 36 through the service opening 34 and removed from it.
  • An outlet nozzle 38 is integrated in the housing base 32.
  • the outlet nozzle 38 has an outlet opening 40 for purified gaseous medium.
  • the outlet nozzle 38 runs, for example, axially to the axis 22.
  • the outlet nozzle 38 has a circular cylindrical shape at least in sections.
  • the housing wall 30 is stepped twice radially outwards. Overall, the housing pot 12 tapers in the axial direction towards the housing base 32. The stepped area forms a receiving area for the secondary filter element 14. The area of the filter element receiving space 36 located between the stepped area and the service opening 34 serves to receive the main filter element 16.
  • the housing wall 30 has a long oval cross-section.
  • the housing wall 30 On the axial side with the service opening 34, the housing wall 30 has a collar 42 which continuously surrounds the axis 22.
  • the collar 42 has a long oval cross-section.
  • the long oval cross-section of the collar 42 differs from the long oval cross-section of the housing wall 30 between the collar 42 and the housing base 32.
  • the housing wall 30 is symmetrical in the area between the housing base 32 and the collar 42 with respect to a rotation about the axis 22 by 180°.
  • the collar wall 44 has no rotational symmetries with respect to the axis 22. This will be explained in more detail below.
  • the collar wall 44 is offset radially outward relative to a main wall section 46 of the housing wall 30.
  • the main wall section 46 extends in the axial direction between the collar 42 and the housing base 32.
  • a collar 48 extends between the main wall portion 46 and the collar wall 44.
  • the collar 48 has a plurality of contact surfaces 50 on its axially directed inner side facing the filter element receiving space 36.
  • the contact surfaces 50 are arranged distributed circumferentially along the collar 48 in respective collar sections of the collar 42.
  • the reference numerals of the contact surfaces 50 can be provided with the indices A, B, C or D, i.e. 50A, 50B, 50C or 50D, whereby the contact surface 50B is not shown in the figures.
  • a ramp surface 52 is arranged between the contact surface 50A and the contact surface 50D. On the radially opposite side, a further ramp surface 52 is arranged between the contact surface 50c and the contact surface 50D. The two ramp surfaces 52 are arranged on radially opposite sides.
  • the contact surfaces 50 extend in the circumferential direction and perpendicular to the axis 22.
  • the ramp surfaces 52 extend circumferentially and are inclined towards the axis 22 in the axial direction from the service opening 34 towards the axis 22.
  • the ramp surfaces 52 of the collar 42 extend along long sides 54 of the overall long-oval filter device 10 when viewed in the axial direction. Respective short sides 56 extend between the long sides 54.
  • long sides 54 and short sides 56 are used below for the components of the filter device 10 which have a long oval cross-section.
  • a flatly curved section 58 extends along one of the short sides 56 of the collar wall 44.
  • a circularly curved section 60 of the collar wall 44 extends along the short side 56 opposite the axis 22.
  • the flatly curved section 58 has a larger radius of curvature than the circularly curved section 60.
  • a straight connecting section 62 of the collar wall 44 extends between the flatly curved section 58 and the circularly curved section 60 along the long sides 54.
  • the three contact surfaces 50A, 50B and 50c are located in the area of the flatly curved section 58.
  • the fourth contact surface 50D is located on the side of the circularly curved section 60.
  • the two lateral contact surfaces 50A and 50c each extend from the transition of the respective straight connecting section 62 to the flatly curved section 50ß to the third contact surface 50B; the third contact surface 50B extends between the lateral contact surfaces 50A 50C.
  • the central contact surface 50B on the side of the flatly curved section 58 and the contact surface 50D on the side of the circularly curved section 60 are at the same axial height.
  • the contact surfaces 50A, 50B and 50c on the side of the flatly curved section 58 are at different axial heights, as can be seen in Figure 4, for example.
  • the central contact surface 50B (not shown) and the contact surface 50D are located closer to the free edge of the collar wall 44 than the two outer contact surfaces 50A and 50c when viewed in the axial direction.
  • An axial distance 64 between the contact surface 50D and the contact surface 50c is smaller than an axial distance 66 between the contact surface 50D and the contact surface 50A.
  • the contact surface 50D extends circumferentially in the center of the circularly curved portion 60 on the side of the circularly curved portion 60 approximately over a circumferential angle of approximately 90° around a circle center (not shown) of the circularly curved portion 60.
  • each of the adjacent ramp surfaces 52 there is a respective indentation 68.
  • the indentations 68 extend in the axial direction, the radial direction and along the collar wall 44.
  • the ramp surfaces 52 extend along the collar wall 44 from the respective straight connecting sections 62 to the respective circularly curved sections 60.
  • a first elevation 248A is arranged on the first outer axial contact surface 50A in the flatly curved contact section 58 of the radially projecting collar 42 of the housing pot 12.
  • a second elevation 248c is arranged on the axial contact surface 50c in the flatly curved contact section 58.
  • the elevations 248A and 248c are each structures protruding in the axial direction from the corresponding axial contact surface 50.
  • the first elevation 248A on the first outer axial contact surface 50A and the second elevation 248c on the second outer axial contact surface 50c of the housing pot 12 are different in terms of their shape, dimensions and/or orientation.
  • the first elevation 248A on the first outer axial contact surface 50A and the second elevation 248c on the second outer axial contact surface 50c differ in their extent in the circumferential direction and/or their radial width.
  • the axial contact surfaces 50 of the radially projecting collar 42 of the housing pot 12 with the elevations 248 have no rotational symmetry with respect to the axis 22.
  • a plurality of grooves 70 each extend approximately axially from the collar 48 to just before the stepped region of the housing wall 30.
  • the grooves 70 are arranged distributed circumferentially along the main wall section 46.
  • the grooves 70 are each realized as bulges in the main wall section 46 towards the radially outward.
  • Each groove 70 forms an elongated depression on the radially inner side of the main wall section 46.
  • each of the grooves 70 forms an elongated elevation on the radially outer side of the main wall section 46.
  • the grooves 70 open towards the contact surfaces 50 or towards the ramp surfaces 52.
  • the cross sections of the grooves 70 taper towards the housing base 32 when viewed in the axial direction.
  • a total of eight fastening blocks 72 are arranged on the radially outer side of the main wall section 46.
  • Four of the fastening blocks 72 are located on the side of the main wall section 46 axially facing the collar 42.
  • the four other fastening blocks 72 are located on the side axially facing the stepped area next to the housing base 32.
  • a screw flange 74 is arranged on each of the fastening blocks 72 on the side facing the corresponding long side 54.
  • the screw flanges 74 are implemented as flat areas, for example.
  • the screw flanges 74 on a common long side 54 run in one plane.
  • Each screw flange 74 can have a threaded hole.
  • the axes of the threaded holes of the screw flanges 74 can run parallel to one another.
  • the filter device 10 can be fastened to corresponding holding elements via the screw flanges 74.
  • the holding elements can, for example, be firmly connected to the machine in which the filter device 10 is used.
  • a total of four clamping lugs 76 are arranged on the outside of the collar 48 axially facing away from the collar wall 44.
  • the clamping lugs 76 rise away from the collar wall 44 in the axial extension of the collar wall 44.
  • Two of the clamping lugs 76 are located in the area of the flat-bent section 58 near the transitions of the flat-bent section 58 to the respective adjacent straight connecting sections 62.
  • the other two clamping lugs 76 are located in the area of the circularly bent section 60 near the transitions to the respective adjacent straight connecting sections 62.
  • the clamping lugs 76 can each be aligned with the axially adjacent fastening blocks 72.
  • the clamping lugs 76 serve to engage respective clamping clamps 78.
  • the clamping clamps 78 are mounted on the cyclone housing 20, as will be explained in more detail below.
  • the collar wall 44 has an inner surface 86 extending in the circumferential direction on the radially inner circumferential side.
  • the inner surface 86 On the side axially facing the free edge of the collar wall 44, the inner surface 86 has a ramp section 80.
  • the inner surface 86 extends obliquely to the axis 22.
  • the radially inner circumference of the collar wall 44 increases in the ramp section 80 in the axial direction towards the free edge.
  • the ramp section 80 thus forms a funnel-shaped installation aid for the post-filter element 14 and the main filter element 16.
  • the inner surface 86 extends axially between the ramp section 80 and the collar 48, parallel to the axis 22.
  • Two nipples 84 are also arranged on the outside of the housing base 32 axially facing away from the filter element receiving space 36.
  • the nipples each extend parallel to the axis 22.
  • the nipples 84 are located on radially opposite sides of the axis 22, each next to the short sides 56 of the housing pot 12.
  • the post-filter element 14 is designed, for example, as a so-called flat filter element.
  • the post-filter element 14 serves as a secondary filter element. Viewed in the direction of the axis 22, the radially outer side of the post-filter element 14 has a long oval shape. The course of the radially outer circumferential surface of the post-filter element 14 corresponds to the long oval shape of the radially inner circumferential side of the Housing pot 12 in the double-stepped area next to the housing base 32.
  • the post-filter element 14 On one of its axial end faces, the post-filter element 14 has a seal 88 running around the axis 22. When installed, the seal 88 separates the clean side of the post-filter element 14 from the dirty side.
  • the main filter element 16 is described in more detail below.
  • the main filter element 16 comprises a filter medium body 90, a skeleton 92, an end body 94 and a seal 96.
  • the skeleton 92 is shown in detail in Figure 5.
  • the skeleton 92 is made entirely of one piece.
  • the skeleton 92 is made as an injection-molded part made of hard plastic.
  • the skeleton 92 has a central element 98 and a frame element 100.
  • the central element 98 serves as a support element on which the filter bellows 134 and 136, explained in more detail below, are supported.
  • the central element 98 comprises a plurality of axial struts 102.
  • the axial struts 102 each run approximately parallel to the axis 22.
  • the axial struts 102 are arranged distributed around the axis 22.
  • the ends of the axial struts 102 there are connected to one another via a connecting ring 104.
  • the axial struts 102 have an approximately rectangular cross-section.
  • the long sides of the rectangular cross-section of each axial strut 102 are each aligned parallel to a radial direction with respect to the axis 22.
  • the circumferential dimensions of the axial struts 102 with respect to the axis 22, i.e. the extent of the short sides of the rectangular cross-section of the axial struts 102, are constant over their axial lengths.
  • the axial struts 102 are approximately wedge-shaped with respect to the axis 22 when viewed circumferentially.
  • the radially outer sides of the axial struts 102 with respect to the axis 22 are each inclined towards the axis 22 when viewed from the frame element 100 to the connecting ring 104.
  • an imaginary radially outer surface surrounding the central element 98 and spanned by the radially outer sides of the axial struts 102 has a conical shape that tapers towards the connecting ring 104.
  • the imaginary radially inner surface that is spanned by the axial struts 102 has a shape that tapers towards the frame 100 when viewed axially from the connecting ring 104.
  • the connecting ring 104 has a long oval cross-section when viewed in the axial direction.
  • the connecting ring 104 has two parallel, coaxial ring sections of the same circumference, which are connected to one another via axially extending struts.
  • the ends of the axial struts 102 axially opposite the connecting ring 104 are connected to a radially inner ring 106.
  • the radially inner ring 106 extends parallel to the connecting ring 104 on the one hand and coaxially to the connecting ring 104 on the other.
  • the radially inner ring 106 extends between the radially inner circumferential sides of the ends of the axial struts 102.
  • An intermediate ring 108 is arranged between the radially inner ring 106 and the connecting ring 104.
  • the intermediate ring 108 connects the axial struts 102 to one another.
  • the intermediate ring 108 extends parallel to the connecting ring 104 and the radially inner ring 106 on the one hand and coaxially to the connecting ring 104 and the radially inner ring 106 on the other.
  • the intermediate ring 108 extends from the radially inner circumferential sides of the axial struts 102 to the radially outer circumferential sides.
  • the intermediate ring 108 is located at an axial distance from the radially inner ring 106 which corresponds to approximately one third of the axial distance between the radially inner ring 106 and the connecting ring 104.
  • Two connecting arches 110 extend along each of the short sides 56. Each of the connecting arches 110 is connected to the connecting ring 104 at its free ends. In the curved center, each of the connecting arches 110 is connected to a central axial strut 102. The connecting arches 110 each extend from the connecting ring 104 on the side axially facing the frame element 100 obliquely to the axis 22 in the direction of the central axial strut 102. On each short side 56, one of the connecting arches 110 is connected to the central axial strut 102 at an axial distance from the connecting ring 104, which corresponds to approximately one fifth of the axial distance between the frame element 100 and the connecting ring 104.
  • This connecting arch 110 connects the connecting ring 104 to the central axial strut 102.
  • the other connecting arch 110 on the short side 56 is connected to the central axial strut 102 at an axial distance from the connecting ring 104, which corresponds to approximately a quarter of the axial distance between the frame element 100 and the connecting ring 104.
  • the latter connecting arch 110 connects the connecting ring 104 to the central axial strut 102 and the two axial struts 102 adjacent to the central axial strut 102 on the short sides 56.
  • the axial struts 102 At their wide end in the radial direction, the axial struts 102 have a step on the radially outer side which rises in the axial direction. The steps of the axial struts 102 are connected to an outer ring 112.
  • the radially outer ring 112 has a long oval cross-section.
  • the radially outer ring 112 runs coaxially to the axis 22.
  • the radially outer ring 112 is axially spaced from the radially inner ring 106. This is achieved by the steps.
  • connecting openings 114 are realized at the ends of the axial struts 102.
  • the connecting openings 114 have the axial height of the steps at the ends of the axial struts 102.
  • Axially extending flow spaces 140 which are located between two adjacent axial struts 102, are connected to one another at the level of the radially inner ring 106 via the connecting openings 114.
  • the radially outer ring 112 is surrounded by a support ring 116 of the frame element 100.
  • the support ring 116 is coaxial with the axis 22.
  • the support ring 116 has an elongated oval cross-section which differs from the elongated oval cross-section of the radially outer ring 112, the radially inner ring 106 and the connecting ring 104, as explained below.
  • the support ring 116 is connected to the radially outer ring 112 by means of radially extending radial struts 118.
  • the radial struts 118 each have a bend of approximately 90° in the direction of the connecting ring 104 on their side facing the support ring 16.
  • the ends of the radial struts 118 behind the bend each engage the side of the support ring 116 axially facing away from the connecting ring 104.
  • the support ring 116 has four support sections 120.
  • the reference numerals of the support sections 120 are provided with the indices A, B, C and D for better differentiation.
  • the sides of the support sections 120 axially facing the connecting ring 104 each form a support surface 122.
  • the reference numerals of the support surfaces 122 like the reference numerals of the respective support sections 120, are provided with the indices A, B, C and D for easier differentiation.
  • the support surfaces 122 are each flat.
  • the planes of the support surfaces 122 each extend perpendicular to the axis 22.
  • first recess 250A corresponding to the first elevation 248A on the first outer axial contact surface 50A is arranged.
  • second outer support section 120c of the support ring 116 of the skeleton 92 of the frame element 100 a second recess 250c corresponding to the second elevation 248c on the second outer axial contact surface 50c is arranged.
  • the recesses 250A and 250c are each recesses in the corresponding support section 120 of the main filter element 16.
  • the recesses 250A and 250c are each designed as a closed pocket.
  • the recesses 250A and 250c each have a continuous boundary wall.
  • the continuous boundary wall enables the corresponding corresponding elevation 248 to be centered in the recess 250 with respect to the axis 22 circumferentially and radially.
  • the boundary wall surrounds an opening of the recess 250 for the corresponding corresponding elevation 248.
  • the respective boundary wall extends to the side radially opposite the opening. The boundary wall thus closes the side of the recess 250 opposite the opening for the corresponding elevation 248.
  • the first recess 250A of the main filter element 16 in the first outer support section 120A and the second recess 250c in the second outer support section 120c are different.
  • the first recess 250A in the first outer support section 120A and the second recess 250c in the second outer support section 120c differ in their extension in the circumferential direction and their radial width.
  • the inner dimensions of the recesses 250 of the main filter element 16 are as large as the outer dimensions of the elevations 248 of the housing pot 12 corresponding to the respective recesses 250.
  • the recesses 250 of the main filter element 16 and the corresponding corresponding elevations 248 of the housing pot 12 are complementary.
  • the support sections 120 of the main filter element 16 with the recesses 250A and 250c have no rotational symmetry with respect to the axis 22.
  • elevations 248 and the corresponding corresponding recesses 250 are designed as mirror images with respect to an imaginary plane running perpendicular to the imaginary axis 22.
  • the frame element 100 extends from the support sections 120 radially inward and in the direction of an inflow side 226 of the main filter element 16.
  • the cross section of the radially outer peripheral side of the support ring 116 corresponds in shape to the cross section of the radially inner peripheral side of the collar wall 44 of the housing pot 12.
  • the radially outer circumference of the support ring 116 is slightly smaller than the radially inner circumference of the collar wall 44.
  • the support ring 116 has a flatly bent section 124 and a circularly bent section 126 on the radially outer shell side.
  • the flatly bent section 124 and the circularly bent section 126 are connected to one another via two opposite, straight connecting sections 128.
  • the radius of curvature of the flatly bent section 124 is larger than the radius of curvature of the circularly bent section 126.
  • the support ring 116 and thus the radially outer shell side of the frame element 100 have no rotational symmetry with respect to the axis 22.
  • the central support section 120B with the central support surface 122B extends in the center of the flat curved section 124 between the two outer support sections 120A and 120c with the corresponding outer support surfaces 122A and 122c.
  • the section sections 120A and 120c with their respective section surfaces 122A and 122c extend between the respective straight connecting sections 128.
  • the circumferential extent of the two lateral support sections 120A and 120c corresponds to the circumferential extent of the two lateral contact surfaces 50A and 50c of the housing pot 12.
  • the support section 120D with its support surface 122D extends centrally in the circularly curved section 126 on the side radially opposite the central support section 120B.
  • the circumferential extent of the support section 120D and the support surface 122D is greater than the circumferential extent of the contact surface 50D of the housing pot 12.
  • the support section 120D with the support surface 122D merges seamlessly into the adjacent straight connecting sections 128 of the support ring 116.
  • the outer support surface 120B and the central support surface 122D are at the same axial height.
  • the outer support surface 122A is located on the central support surface 122B of the Connecting ring 104 facing side of the support ring 116 at an axial distance from the central support surface 122B.
  • the other outer support surface 122c is located on the side of the support ring 116 facing the connecting ring 104 at an axial distance from the central support surface 122B.
  • the distance of the outer support surface 122A is greater than the distance of the outer support surface 122c.
  • the distance of the outer support surface 122A corresponds to the distance 66 of the outer contact surface 50A of the housing pot 12.
  • the distance of the outer support surface 122c corresponds to the distance 64 of the outer contact surface 50c of the housing pot 12.
  • the side of the support ring 116 axially facing the connecting ring 104 in the region of the support sections 120 is complementary to the side of the collar 48 of the housing pot 12 axially facing away from the housing base 32.
  • the filter medium body 90 comprises an outer filter bellows 134 and an inner filter bellows 136.
  • the filter bellows 134 and 136 each consist of folded filter medium, for example filter fleece.
  • the outer filter bellows 134 has the shape of a hollow truncated cone with a long oval base.
  • the outer filter bellows 134 is coaxial with the axis 22.
  • the base of the outer filter bellows 134 is located on the side of the main filter element 16 on which the frame element 100 of the skeleton 92 is also located.
  • the radially inner shell side of the outer filter bellows 134 runs parallel to its radially outer shell side.
  • the folds of the folded outer filter bellows 134 each extend in the axial direction. The folds define the respective shell side.
  • the radially outer surface of the outer filter bellows 134 forms a radially outer surface 242 of the filter medium body 90.
  • the radially outer surface 242 of the filter medium body 90 has two curved sections and two straight connecting sections with respect to its course around the axis 22.
  • the curved sections are located on radially opposite sides on the short sides 56.
  • the connecting sections are located on radially opposite sides on the long sides 54.
  • the curved sections are connected by the straight connecting sections.
  • the radial thickness of the outer filter bellows 134 is defined by the pleat height.
  • the radial thickness of the outer filter bellows 134 corresponds approximately to the radial distance of the support ring 116 of the frame element 100 of the skeleton 92 to the radially outer ring 112 and to the radially outer sides of the axial struts 102.
  • the radially outer circumference and the radially inner circumference of the outer filter bellows 134 each decrease in the axial direction from the frame element 100 of the skeleton 92 to the connecting ring 104.
  • the outer filter bellows 134 tapers in the axial direction from the frame element 100 to the connecting ring 104.
  • the radially inner shell side of the outer filter bellows 134 is supported on the respective radially outer sides of the axial struts 102, the intermediate ring 108 and the connecting arches 110 of the skeleton 92.
  • the inner filter bellows 136 has the shape of a hollow truncated cone with a long oval base.
  • the inner filter bellows 136 is coaxial with the axis 22.
  • the base of the inner filter bellows 136 is located on the side of the main filter element 16 on which the connecting ring 104 of the skeleton 92 is also located.
  • the radially inner shell side of the inner filter bellows 136 runs parallel to its radially outer shell side.
  • the folds of the folded inner filter bellows 136 each extend in the axial direction. The folds define the respective shell side.
  • the radial thickness of the inner filter bellows 136 is defined by the pleat height.
  • the radial thickness of the inner filter bellows 136 corresponds approximately to the radial thickness of the outer filter bellows 134.
  • the radially outer circumference and the radially inner circumference of the inner filter bellows 136 each decrease in the axial direction from the connecting ring 104 of the skeleton 92 to the frame element 100.
  • the outer filter bellows 134 tapers in the axial direction from the connecting ring 104 to the frame element 100.
  • the radially outer shell side of the inner filter bellows 136 is supported on the respective radially inner sides of the axial struts 102, the intermediate ring 108, the radially inner ring 106 and the connecting arches 110 of the skeleton 92.
  • the circumference of the radially outer shell side of the inner filter bellows 136 in the area of the base area is slightly smaller than the circumference of the radially inner shell side of the outer filter bellows 134 in the area of the cover side.
  • the inner filter bellows 136 is arranged coaxially in an interior space enclosed by the outer filter bellows 134.
  • the base side of the outer filter bellows 134 is connected to the base side of the inner filter bellows 136 via a circumferentially and radially extending connecting fold 138.
  • the flow spaces 140 are created between the radially outer circumferential side of the inner filter bellows 136 and the radially inner circumferential side of the inner filter bellows 136. Each of the flow spaces 140 is circumferentially delimited by one of two adjacent axial struts 102. Gaseous medium to be cleaned can flow into the flow spaces 140. From the flow spaces 140, the gaseous medium to be cleaned can flow functionally parallel through the outer filter bellows 134 from radially inside to radially outside and through the inner filter bellows 136 from radially outside to inside.
  • the end body 94 closes an element interior 142 surrounded by the inner filter bellows 136 on the axial end face facing the frame element 100.
  • the end body 94 is arranged coaxially to the axis 22.
  • the end body 94 has a long oval cross section.
  • the end body 94 is connected to the radially inner ring 106 of the skeleton 92 in a circumferential manner with respect to the axis 22 and is supported by the latter.
  • the end body 94 is made of elastic material, for example elastomer.
  • the seal 96 which is shown in detail in Figure 3, is explained in more detail below.
  • the seal 96 is ring-shaped and has a long oval shape when viewed in the axial direction.
  • the seal 96 is made in one piece from an elastic material, for example elastomer.
  • the material of the seal 96 is softer than the material from which the skeleton 92 with the frame element 100 is formed.
  • the seal 96 includes a holding portion 144 and a sealing portion 146.
  • the seal 96 is connected to the frame element 100 of the skeleton 92 by the holding section 144.
  • the seal 96 can be glued or cast onto the side of the frame element 100 axially facing away from the connecting ring 104 by the holding section 144.
  • the holding section 144 surrounds the radially outer ring 112 of the skeleton 92 and the steps at the ends of the axial struts 102 on their radially outer sides and on the respective radially inner side.
  • the frame element 100 is enclosed there in sections by the material of the seal 96.
  • the holding portion 144 leaves the support surfaces 122 free on the side of the support ring 116 axially facing the connecting ring 104.
  • the holding section 144 extends radially outward beyond the radially outer ring 112 of the skeleton 92 and merges into the sealing section 146 in the region of the radially outer side of the support ring 116.
  • the sealing section 146 is arranged directly adjacent to the radially outer surface of the support ring 116 and thus of the frame element 100 with respect to the axis 22. In addition, the sealing section 146 is arranged completely radially outside the radially outer surface of the filter medium body 90 with respect to the axis 22.
  • a free side 150 of the holding section 144 on the side of the holding section 144 facing away from the frame element 100 of the skeleton 92 runs in a plane perpendicular to the axis 22.
  • the sealing section 146 is a sealing web.
  • the sealing section 146 extends away from the support ring 116 in the axial direction.
  • the free end of the sealing section 146 runs in an imaginary plane perpendicular to the axis 22.
  • the axially free end 148 of the sealing section 146 projects beyond the side 150 of the holding section 144 facing away from the skeleton 92 in the axial direction.
  • the radially outer circumference of the sealing section 146 in the region of its free end 148 is slightly larger than the radially outer circumference of the sealing section 146 in the region of the support ring 116.
  • the radially inner circumference of the sealing section 146 in the region of the free end 148 is smaller than the radially inner circumference of the sealing section 146 in the region of the transition to the holding section 144.
  • the sealing section 146 tapers conically in the axial direction from the free end 148 to the support ring 116. [0189]
  • the sealing section 146 is offset radially outward relative to the radially outer outer surface 242 of the filter medium 90.
  • An axial distance 188 between the respective section surface 122 of the frame element 100 of the skeleton 92 and the free end 148 of the seal 96 is, when the seal 96 is relaxed, greater than an axial distance 190 between the corresponding contact surface 50 of the collar 48 of the housing pot 12 and a free edge 192 of the collar wall 44.
  • the recess 152 extends circumferentially with respect to the axis 22 along the radially inner side of the sealing section 146 on the side 150 of the holding section 144 axially facing away from the support ring 116.
  • the sealing section 146 has a long oval shape.
  • the shape of the sealing section 146 corresponds to the shape of the collar wall 44 of the housing pot 12 and the frame element 100 of the skeleton 92 viewed in the axial direction.
  • the sealing section 146 has a flatly curved section 154 on the short side 56 and a circularly curved section 156 on the opposite short side 56.
  • the flatly curved section 154 has a larger radius of curvature than the circularly curved section 156.
  • the flatly curved section 154 and the circularly curved section 156 are each connected to a straight connecting section 158 on the long sides 54.
  • dip tube plate 18 is explained in more detail below with reference to Figure 6, in which a detailed view of the dip tube plate 18 is shown.
  • the immersion tube plate 18 is made in one piece.
  • the immersion tube plate 18 consists of a plastic, for example an injection-moldable hard plastic.
  • the immersion tube plate 18 is manufactured using an injection molding process.
  • the dip tube plate 18 includes a plate portion 160, a plurality of dip tubes 162 and a rib 164.
  • the plate section 160 extends in a plane perpendicular to the axis 22.
  • a plurality of dip tubes 162 are distributed in the plate section 160.
  • Each of the dip tubes 162 is part of a cyclone separator 166.
  • the cyclone separators 166 are designed as axial cyclones, for example.
  • the dip tube plate 18 with the dip tubes 162 forms the cyclone block 24 together with the cyclone housing 20.
  • the cyclone block 24 has a plurality of cyclone separators 166.
  • Each of the dip tubes 162 has approximately the shape of a hollow truncated circular cylinder, the axes of which run parallel to the axis 22.
  • the base surfaces of the truncated circular cylinders of the dip tubes 162 are located on the side of the plate section 160.
  • the dip tubes 162 taper in the axial direction viewed from the plate section 160.
  • the interiors of the dip tubes 162 serve as inlet openings 168 for gaseous medium to be cleaned.
  • the plate section 160 merges into the rib 164.
  • the rib 164 extends circumferentially coaxially to the axis 22.
  • the rib 164 has an approximately V-shaped profile overall.
  • One of the legs of the V-shaped rib 164 which is referred to below as the axial leg 170, is connected to the edge of the plate section 160.
  • the axial leg 170 is located on the radially inner side of the rib 164.
  • the axial leg 170 extends axially approximately parallel to the axis 22 and circumferentially, at least in the relaxed state, for example when the dip tube plate 18 is not mounted.
  • the other leg of the "V”, which is referred to below as the ramp leg 172, is connected to the axial leg 170 on the side of the plate section 160 facing away from it.
  • the connecting edge of the axial leg 170 with the ramp leg 172, i.e. the closed side of the "V", is referred to below as the rib edge 174.
  • the ramp leg 172 is located on the radially outer side of the rib 164.
  • the ramp leg 172 extends from the rib edge 174 on the side facing axially towards the plate section 160 radially outward at an angle to the axis 22.
  • the free end of the ramp leg 172 is referred to as the free edge 176.
  • the radially outer side of the ramp leg 172 forms a contact surface 178.
  • the contact surface 178 rests against the sealing section 146 of the seal 96 of the main filter element 16.
  • the contact surface 178 runs obliquely to the axis 22 and circumferentially.
  • the contact surface 178 encloses an acute angle 180 with the axis 22.
  • the angle 180 can be, for example, approximately between 30° and 45°.
  • An axial distance 182 between the free edge 176 and the rib edge 174 is approximately equal to an axial distance between the rib edge 174 and the plate portion 160.
  • the rib 164 has a long oval shape.
  • the shape of the rib 164 corresponds to the shape of the collar wall 44 of the housing pot 12, the frame element 100 of the skeleton 92 and the sealing section 146 of the seal 96 viewed in the axial direction.
  • the rib 164 has a flatly curved section 230 on the short side 56 and a circularly curved section 232 shown in Figure 2 on the opposite short side 56.
  • the flatly curved section 230 has a larger radius of curvature than the circularly curved section 232.
  • the flatly curved section 230 and the circularly curved section 232 are each connected to a straight connecting section 234 on the long sides 54.
  • the circumference of the rib edge 174 corresponds to the circumference of the recess 152 of the seal 96.
  • the acute angle 180 of the contact surface 178 is greater than an angle between a radially inner sealing surface 184 of the sealing section 146 of the seal 96 and the axis 22 when the seal 96 is relaxed. for example in the non-assembled state.
  • the axial distance 182 between the rib edge 174 and the free edge 176 of the rib 164 corresponds approximately to an axial distance 186 in the seal 96 between the bottom of the recess 152 and the free end 148 of the sealing section 146.
  • the cyclone housing 20 comprises a mounting frame 194, a plurality of separation chambers 196 and a particle discharge device 198 and a total of four clamps 78.
  • the separation chambers 196 are located in a main part 200 of the cyclone housing 20. Each of the separation chambers 196 is assigned to one of the dip tubes 162 of the dip tube plate 18. The dip tubes 162 with the corresponding separation chamber 196 each form one of the cyclone separators 166. The separation chambers 196 each have an approximately circular cylindrical shape. The axes of the separation chambers 196 run parallel to the axis 22. When the filter device 10 is mounted, the axes of the separation chambers 196 run coaxially to the axes of the corresponding dip tubes 162.
  • the particle discharge device 198 is arranged on a radially outer side of the main part 200.
  • the separation chambers 196 are fluidically connected to the particle discharge device 198 in a manner not of further interest here. In this way, particles separated from the gaseous medium to be cleaned in the respective cyclone separator 166, for example dust particles, can reach the particle discharge device 198.
  • the particle discharge device 198 has a discharge opening 202.
  • the discharge opening 202 is closed during regular operation of the filter device 10.
  • the discharge opening 202 can be opened to discharge particles collected in the particle discharge device 198.
  • the particle discharge device 198 is located spatially at the bottom of the cyclone housing 20.
  • the discharge opening 202 is then directed spatially downwards.
  • the fastening frame 194 is located on an axial end face of the main part 200.
  • each of the separation chambers 196 has an inlet opening 204 for gaseous medium to be cleaned.
  • each of the separation chambers 196 has an opening for the corresponding dip tube 196.
  • the mounting frame 194 has an outer frame wall 206 which is connected to the main part 200 via a collar 208.
  • the frame outer wall 206 and the collar 208 extend circumferentially contiguously around the axis 22.
  • the collar 208 extends radially outward from the main part 200.
  • the frame outer wall 206 extends axially from the collar 208 away from the main part 200.
  • the frame outer wall 206 has a guide bevel 210 on the radially inner circumferential side. In the region of the guide bevel 210, the radially inner circumference of the frame outer wall 206 increases in the axial direction away from the main part 200 toward the free edge.
  • the frame outer wall 206 has a long oval shape.
  • the shape of the frame outer wall 206 corresponds to the shape of the collar wall 44 of the housing pot 12, the frame element 100 of the skeleton 92, the sealing section 146 of the seal 96 and the rib 164 of the dip tube plate 18 viewed in the axial direction.
  • the frame outer wall 206 has a flatly curved section 236 on the short side 56 and a circularly curved section 238 on the opposite short side 56.
  • the flatly curved section 236 has a larger radius of curvature than the circularly curved section 238.
  • the flatly curved section 236 and the circularly curved section 238 are each connected to the long sides 54 with a straight connecting section (not shown).
  • the radially inner circumference of the frame outer wall 206 in the axial region between the guide bevel 210 and the main part 200 is slightly larger than the radially outer circumference of the collar 42 of the housing pot 12.
  • the radially outer side of the main part 200 has a long oval shape when viewed in the axial direction.
  • the curved sections on the short sides 56 have the same radius of curvature.
  • the long oval shape of the main part 200 differs from the long oval shape of the frame outer wall 206.
  • the radially outer circumference of the main part 200 corresponds approximately to the radially outer circumference of the skin wall section 46 of the housing pot 12.
  • Two of the clamping clamps 78 are located on the side of the flat-bent section 236 in the region of the transition to the corresponding straight connecting section.
  • the other two clamping clamps 78 are located on the side of the circular-bent section 238 in the region of the transition to the corresponding straight connecting section.
  • the clamps 78 each engage in the area of the outside of the collar 208 facing away from the frame outer wall 206.
  • the clamps 78 extend beyond the free edge of the frame outer wall 206.
  • the clamps 78 are, for example, spring clips.
  • the dip tube plate 18 is connected to the cyclone housing 20. To do this, the dip tube plate 18 is brought into the mounting frame 194 with the dip tubes 162 leading in the axial direction. It may be necessary to rotate the dip tube plate 18 and the cyclone housing 20 relative to each other about the axis 22 so that the flatly curved section 236 of the frame outer wall 206 coincides with the flatly curved section 230 of the rib 164 on the one hand and the circularly curved section of the mounting frame 194 and the circularly curved section 232 of the rib 164 on the other hand.
  • the dip tubes 162 are each arranged in one of the separation chambers 196.
  • the dip tube plate 18 is then fixed to the cyclone housing 20, for example with screws. If the main filter element 16 and/or the post-filter element 14 from the filter device 10 are later replaced, the dip tube plate 18 can remain on the cyclone housing 20. In this way, the entire cyclone block 24 can be separated from the housing pot 12.
  • the post-filter element 14 is brought into the housing pot 12 with its side facing away from the seal 88 in the axial direction through the service opening 34. It may be necessary to rotate the housing pot 12 and the post-filter element 14 relative to each other about the axis 22 so that the long sides 54 of the post-filter element 14 match the long sides 54 of the housing pot 12 and the short sides 56 of the post-filter element 14 match the short sides 56 of the housing pot 12.
  • the post-filter element 14 is placed in the stepped section of the housing wall 30 axially next to the housing base 32.
  • the main filter element 16 is then brought with its side axially facing away from the seal 96 in the axial direction through the service opening 34 into the filter element interior 36 of the housing pot 12.
  • the main filter element 16 is pushed in the axial direction into the housing pot 12 until the support surfaces 122 of the skeleton 92 axially rest against the corresponding contact surfaces 50 of the collar 42.
  • the first elevation 248A on the first outer axial contact surface 50A of the radially projecting collar 42 of the housing pot 12 engages in the corresponding first recess 250A of the first outer support section 120A of the main filter element 16.
  • the second elevation 248c on the second outer axial contact surface 50c of the radially projecting collar 42 of the Housing pot 12 engages in the corresponding second recess 250c of the second outer support portion 120c of the main filter element 16.
  • the radially outer surface 212 of the sealing section 146 is spaced apart in the radial direction from the inner surface 86 of the collar wall 44 of the collar 42 of the housing pot 12.
  • a radial gap remains between the radially outer surface 212 of the seal 96 and the inner surface 86 of the collar 42.
  • the radial gap extends circumferentially with respect to the axis 22 and in the axial direction over the entire axial extent of the inner surface 86.
  • the free end 148 of the sealing section 146 projects in the axial direction beyond the free edge 192 of the collar wall 44 of the housing pot 12.
  • the cyclone block 24 is then placed with the immersion tube plate 18 first in the axial direction onto the collar 42 of the housing pot 12. It may be necessary to rotate the housing pot 12 and the cyclone block 24 about the axis 22 so that the short side 56 of the collar wall 44 with the flat-bent section 58 corresponds to the short side 56 of the frame outer wall 206 of the cyclone housing 20 with the flat-bent section 236 and correspondingly the short side 56 of the collar wall 44 with the circularly bent section 60 corresponds to the short side 56 of the frame outer wall 206 with the circularly bent section 238.
  • the radially outer surface 212 of the seal 96 lies tightly against the inner surface 86 of the collar 42 of the housing pot 12 in a contact section 218.
  • the contact section 218 begins at an axial distance 220 from the frame element 100 of the skeleton 92, in particular from the respective contact surface 50, and extends in the axial direction to the free edge 192 of the collar wall 44.
  • a residual gap 222 remains between the radially outer circumferential side of the sealing section 146 and the inner surface 86 of the collar wall 44.
  • the residual gap 220 extends circumferentially contiguously and in the axial direction.
  • the remaining gap 222 has a wedge-shaped profile which decreases in the axial direction towards the contact section 218.
  • Each dip tube 162 has an outflow end 248 on its side facing the inflow side 226 of the filter element 16.
  • the outflow end 248 is surrounded by a dip tube edge section 250.
  • the dip tube edge sections 250 of adjacent dip tubes 162 merge into one another.
  • the dip tube edge sections 250 are formed in the plate section 160 of the dip tube plate 18.
  • the dip tube edge sections 250 are located at an axial distance 252 from the free end 148 of the circumferential seal 96 radially inside the sealing section 146.
  • the outflow ends 248 of the dip tubes 162 are located, viewed axially, beyond the upstream axial free end 148 of the circumferential seal 96.
  • the dip tube edge sections 250 surrounding the outflow ends 248, and thus also the outflow ends 248 of the dip tubes 162, are viewed axially submerged behind the free end 148 of the circumferential seal 96 and thus behind the upstream end of the main filter element 16.
  • a sealing chamber 224 is formed between the dip tube plate 18 and the housing pot 12, in which the sealing section 146 of the seal 96 and a part of the holding section 144 are arranged.
  • the sealing chamber 224 is delimited radially on the inside by the rib 164 of the dip tube plate 18, radially on the outside by the inner surface 86 of the collar wall 44 of the housing pot 12 and axially by the collar 208 of the cyclone housing 20 connected to the dip tube plate 18.
  • the filter device 10 is mounted with the short side 56, on which the particle discharge device 198 of the cyclone block 24 is arranged, facing downwards.
  • the axis 22 is arranged essentially horizontally.
  • the gaseous medium to be cleaned for example air
  • the flow of the gaseous medium within the filter device 10 is indicated in Figure 2 by curved arrows.
  • a coarse separation of particles takes place in the cyclone separators 166.
  • the separated particles sink downwards under gravity to the particle discharge device 198, where they are collected.
  • the discharge opening 202 of the particle discharge device 198 is opened as needed or during maintenance and the particle discharge device 198 is emptied.
  • the pre-cleaned gaseous medium passes through the inlet openings 168 of the dip tubes 162 to the inflow side 226 of the main filter element 16.
  • the inflow side 226 is located on the side of the main filter element 16 on which the seal 96 is also located.
  • the gaseous medium to be cleaned flows into the flow spaces 140 between the outer filter bellows 134 and the inner filter bellows 136.
  • the gaseous medium is distributed circumferentially as it flows through the connecting openings 114.
  • the gaseous medium to be cleaned flows through the outer filter bellows 134 from radially to radially outward, is further cleaned with it and reaches an annular space surrounding the main filter element 16 radially on the outside.
  • the gaseous medium to be cleaned flows through the inner filter bellows 136 from radially outside to radially inward, is further cleaned with it and reaches the interior of the element 142.
  • the gaseous medium from the annular space cleaned in the second stage and the gaseous medium from the element interior 42 cleaned in the second stage reach the downstream side 228 of the main filter element 16.
  • the downstream side 228 of the main filter element 16 is located on the side axially facing away from the upstream side 226.
  • the gaseous medium which has been cleaned in three stages, leaves the filter device 10 through the outlet opening 40 of the filter housing 26. From there, the cleaned gaseous medium is sucked in by corresponding components of the machine.
  • Figures 8 to 11 show a second embodiment of a filter device. Those elements which are similar to those of the first embodiment of Figures 1 to 7 are provided with the same reference numerals.
  • the second embodiment differs from the first embodiment in that the collar 42 of the housing pot 12, the frame element 100 of the skeleton 92, the seal 96, the rib 164 of the dip tube plate 18 and the fastening frame 194 of the cyclone housing 20 are circularly bent on both short sides 56.
  • the collar 42 of the housing pot 12 has only one circumferentially continuous contact surface 50. No ramp surfaces are provided on the long sides 54.
  • the contact surface 50 extends at an axial height in a plane perpendicular to the axis 22.
  • the housing pot 12 has no grooves 70.
  • the frame element 100 of the skeleton 92 of the main filter element 16 has only one circumferentially continuous support section 120 with a circumferentially continuous support surface 122.
  • the support surface 122 extends at an axial height in a plane perpendicular to the axis 22.
  • Two elevations 248E are arranged on the axial contact surface 50 in the one curved section 60 of the radially projecting collar 42 of the housing pot 12.
  • one elevation 248F is arranged in each of the straight connecting sections 62 of the radially projecting collar 42 of the housing pot 12.
  • the two elevations 248E in the curved section 60 of the axial contact surface 50 of the housing pot 12 can be identical in their height, their extension in the circumferential direction and/or transversely to the circumferential direction.
  • the two elevations 248F in the straight connecting sections 62 of the axial contact surface 50 of the housing pot 12 can be identical in their height, their extension in the circumferential direction and/or transversely to the circumferential direction.
  • the two elevations 248E in the curved portion 60 of the axial contact surface 50 and the two elevations 248F in the straight connecting portions 62 of the axial contact surface 50 differ in particular in their extension in the circumferential direction and are thus different.
  • the recesses 250E and 250F are each designed as a closed pocket, analogous to the recesses 250A and 250c in the first embodiment.
  • the recesses 250E and 250F each have a continuous boundary wall.
  • the two recesses 250E in the curved portion 126 of the support portion 120 of the frame element 100 of the main filter element 16 are identical in their height, their extension in the circumferential direction and/or transverse to the circumferential direction.
  • the two recesses 250F in the straight sections 128 of the support section 120 of the main filter element 16 are identical in their height, their extension in the circumferential direction and/or transverse to the circumferential direction.
  • the two recesses 250E in the curved portion 126 of the support portion 120 and the two recesses 250F in the straight portions 128 of the support portion 120 differ in their extension in the circumferential direction and are therefore different.
  • the inner dimensions of the recesses 250E and 250F of the frame element 100 of the main filter element 16 are as large as the outer dimensions of the elevations 248E and 248F of the housing pot 12 corresponding to the respective recesses 250E and 250F.
  • the recesses 250E and 250F of the frame element 100 of the main filter element 16 and the corresponding corresponding elevations 248E and 248F of the housing pot 12 are complementary.
  • the support section 120 of the main filter element 16 with the recesses 250E and 250F have no rotational symmetry with respect to the axis 22.
  • elevations 248E and 248F and the corresponding recesses 250E and 250F are designed as a mirror image with respect to an imaginary plane running perpendicular to the imaginary axis 22.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un dispositif de filtration pour un milieu gazeux, comprenant un boîtier de filtration doté d'une ouverture d'entrée et d'une ouverture de sortie. Un élément filtrant (16) est agencé dans le boîtier de filtration. Le boîtier de filtration comprend une première partie de boîtier, dans laquelle l'élément filtrant (16) est agencé, et une seconde partie de boîtier, sur laquelle l'ouverture d'entrée est formée et qui comprend un séparateur à cyclone. La seconde partie de boîtier ferme de manière amovible une ouverture de service dans la première partie de boîtier. La première partie de boîtier présente un collier faisant saillie radialement qui s'étend au moins partiellement autour d'un axe imaginaire (22) et qui fournit une surface d'appui axiale sur laquelle s'appuie une partie de support périphérique (120) de l'élément filtrant (16), ladite partie de support faisant saillie radialement sur le corps de milieu filtrant (90) par rapport à l'axe (22). Sur la surface d'appui axiale du collier est agencée au moins une élévation qui vient en prise dans une ouverture correspondante (250E, 250F) dans la partie de support (120) de l'élément filtrant (16), ce qui permet d'obtenir une position de montage non ambiguë de l'élément filtrant (16) dans la première partie de boîtier.
EP24707730.8A 2023-03-23 2024-02-26 Dispositif de filtration pour un milieu gazeux, élément filtrant, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration Pending EP4683723A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023107293.5A DE102023107293A1 (de) 2023-03-23 2023-03-23 Filtervorrichtung für gasförmiges Medium, Filterelement, Verwendung eines Filterelements und Verfahren zum Zusammenbau einer Filtervorrichtung
PCT/EP2024/054733 WO2024193948A1 (fr) 2023-03-23 2024-02-26 Dispositif de filtration pour un milieu gazeux, élément filtrant, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration

Publications (1)

Publication Number Publication Date
EP4683723A1 true EP4683723A1 (fr) 2026-01-28

Family

ID=90059280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24707730.8A Pending EP4683723A1 (fr) 2023-03-23 2024-02-26 Dispositif de filtration pour un milieu gazeux, élément filtrant, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration

Country Status (6)

Country Link
US (1) US20260014504A1 (fr)
EP (1) EP4683723A1 (fr)
JP (1) JP2026510059A (fr)
CN (1) CN121219057A (fr)
DE (1) DE102023107293A1 (fr)
WO (1) WO2024193948A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6966940B2 (en) * 2002-04-04 2005-11-22 Donaldson Company, Inc. Air filter cartridge
DE102011011595A1 (de) * 2011-02-17 2012-08-23 Mann + Hummel Gmbh Filterelement
BR112014017200B1 (pt) * 2012-01-13 2020-12-08 Mann+Hummel Gmbh elemento de filtro de ar e filtro de ar
US10682597B2 (en) * 2016-04-14 2020-06-16 Baldwin Filters, Inc. Filter system
DE102016012330A1 (de) * 2016-10-17 2018-04-19 Mann + Hummel Gmbh Rundfilterelement, insbesondere zur Gasfiltration
EP3717102B1 (fr) * 2017-11-27 2025-11-05 Donaldson Company, Inc. Ensembles purificateurs d'air et procédés d'utilisation
IT201900011187A1 (it) * 2019-07-08 2021-01-08 Officine Metallurgiche G Cornaglia Spa Filtro aria per motori endotermici dotato di cartuccia di sicurezza
IT201900011190A1 (it) 2019-07-08 2021-01-08 Officine Metallurgiche G Cornaglia Spa Filtro aria per motori endotermici dotato di cartuccia intercambiabile

Also Published As

Publication number Publication date
US20260014504A1 (en) 2026-01-15
JP2026510059A (ja) 2026-03-27
WO2024193948A1 (fr) 2024-09-26
CN121219057A (zh) 2025-12-26
DE102023107293A1 (de) 2024-09-26

Similar Documents

Publication Publication Date Title
EP3525913B1 (fr) Élément filtrant rond, en particulier pour la filtration de gaz
DE112010000811B4 (de) Filtereinrichtung zur filtration gasförmiger fluide und filtereinsatz
DE102014006852B4 (de) Hohlfilterelement, Filtergehäuse und Filter
EP2720773B1 (fr) Système de filtration d'air, élément-filtre à air et procédé pour le remplacement d'un élément-filtre d'air
DE102011120387B4 (de) Luftfilteranordnung und Filtervorrichtung mit einer Luftfilteranordnung
DE102015000069B4 (de) Wechselfilter einer Filtervorrichtung und Filtervorrichtung
EP2654922B1 (fr) Élément de filtre à air
WO2015193341A2 (fr) Filtre et cartouche filtrante
DE102016012325A1 (de) Rundfilterelement, insbesondere zur Gasfiltration
WO2016169838A1 (fr) Élément secondaire pour système filtant ainsi que système filtrant doté d'un élément secondaire
DE112015004116T5 (de) Axialströmungs-Luftfilterelement
EP3463616A1 (fr) Élément filtrant d'un dispositif de filtration, boîtier de filtre et dispositif de filtration
DE112019003046T5 (de) Dichtungssysteme und verfahren für ein filtrationssystem
EP4048426A1 (fr) Dispositif de traitement pour traiter des fluides, en particulier des fluides liquides, et unité de traitement et tête de raccordement pour un dispositif de traitement
WO2021078759A1 (fr) Dispositif de traitement pour traiter des fluides, en particulier des fluides liquides, et unité de traitement et tête de raccordement pour un dispositif de traitement
DE102010006556B4 (de) Luftfilter eines Verbrennungsmotors
WO2019219634A1 (fr) Élément de filtre à air avec joint d'air pur circulaire débordant, boîtier de filtre et filtre à air
WO2024193948A1 (fr) Dispositif de filtration pour un milieu gazeux, élément filtrant, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration
WO2024194450A1 (fr) Dispositif de filtration pour milieux gazeux, élément filtrant, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration
EP4648878A1 (fr) Élément filtrant pour milieux gazeux, dispositif de filtration, utilisation d'un élément filtrant, et procédé d'assemblage d'un dispositif de filtration
WO2025056261A1 (fr) Élément filtrant pour agencement dans un boîtier de filtre d'un dispositif de filtre, boîtier de filtre et dispositif de filtre
DE202024100245U1 (de) Filtersystem mit geflanschter Filterpatrone
DE102021128473A1 (de) Filterelement für ein Filtersystem und Filtersystem
DE102024111993A1 (de) Rundfilterelement, insbesondere zur Gasfiltration
WO2023078636A1 (fr) Élément filtrant rond servant à filtrer un fluide gazeux

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250821

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR