DE102013020502A1 - Filter system and filter element with coupling device and sealing device - Google Patents

Abstract

The invention relates to a filter system (100) for filtering a fluid, comprising a filter element (10), a filter housing (108) with a cover (110), a sealing device (20) arranged on the filter element (10) for separating a raw side (52 ) of the filter element (10) of a clean side (50), and a coupling device (30) consisting of at least two coupling parts (31, 33) for coupling the filter element (10) with the cover (110), wherein the coupling parts (31 , 33) comprise a coupling element (36) and a coupling receptacle (34). In this case, the coupling device (30) is a quick coupling device. Next, the sealing device (20) in an end position of the coupled coupling element (36) and the coupling receptacle (34) in its sealing position (18) is arranged. The invention further relates to a filter element (10) for installation in such a filter system (100), as well as the use of the filter system (100) as an oil or fuel filter.

Description

Technical area

The invention relates to a filter system for filtering a fluid with a coupling device and a sealing device, in particular for use as an oil or fuel filter of an internal combustion engine, and a filter element for installation in such a filter system.

State of the art

From the DE 20 2006 018 335 U1 is a replaceable filter insert is known to which the seal is slidably and captively held in the axial direction. In particular, the seal comprises a circumferential around the filter insert support ring with a sealing ring, wherein the circumferential support ring is provided on the inside with respect to a radial direction with at least one securing edge. In this case, the filter insert at its two ends located in the axial direction in each case one in particular designed as an end plate end stop for the securing edge. The captive mounting of the seal on the filter insert causes the seal for the two housing parts is removed with the removal of the filter cartridge from the filter housing the same with and can not be used again. The newly inserted, similar filter insert carries the captive held seal, which is brought into position when inserting the new filter cartridge. The new seal can not be forgotten. The axial displaceability of the seal allows that first the filter cartridge is positioned without the seal interfering with it. Regardless of the position of the filter cartridge, the seal can be brought into its intended mounting position. In particular, there is the possibility of using similar filter inserts in different filter housings with differently positioned parting planes. By axial displacement, the seal can be brought into different mounting positions. It does not depend on the installation direction of the filter insert. To facilitate handling, the user may insert the filter cartridge in any direction into the housing, with the seal being displaced to the appropriate axial position.

Disclosure of the invention

An object of the invention is therefore to provide a filter system for filtering a fluid, which allows to remove in a structurally simple and flexible manner without additional tools a filter element with a sealing device arranged thereon from the filter system.

Another object of the invention is to provide a filter element for installation in such a filter system, which can be removed in a structurally simple and flexible manner without additional tools from the filter system.

The above objects are achieved according to one aspect of the invention of a filter system comprising a filter element, a filter housing with a lid, a sealing element arranged on the filter element, and a coupling device for coupling the filter element with the lid, with a coupling element and a coupling receptacle and from a filter element for installation in such a filter system comprising a sealing device and a coupling part.

Favorable embodiments and advantages of the invention will become apparent from the other claims, the description and the drawings.

It is proposed a filter system for filtering a fluid comprising a filter element, a filter housing with a lid, a sealing device arranged on the filter element for separating a raw side of the filter element from a clean side, and a coupling device consisting of at least two coupling parts for coupling the at least one filter element with the lid, wherein the coupling parts comprises a coupling element and a corresponding coupling receptacle. The coupling device is a quick coupling device. Furthermore, the sealing device is arranged in an end position of coupled coupling element and coupling receptacle in its sealing position.

In particular, the coupling element can have a greater extent perpendicular to the axial direction than in the axial direction.

The filter system according to the invention, which can be preferably used as a stationary filter system on an internal combustion engine, has a filter element which comprises on its upper end side on an upper end plate a coupling device, which is designed in the form of a quick coupling. For example, a bayonet connection can prove to be a convenient way to quickly and safely close the lid when the coupling device is closed, thus sealing the filter system. The coupling element may alternatively be arranged, for example, on the end disk of the filter element around the outlet of the filter element and the coupling receptacle on the lid. Likewise, a reverse arrangement is conceivable. The coupling element is in the form of a flattened in the axial direction disc which surrounds the outlet of the filter element, with the formed shorter axis in the axial direction, wherein the coupling element is rotationally symmetrical about the axial direction, while the coupling receptacle may be formed, for example in the form of a hollow ball with a plurality of receiving jaws for gripping the coupling element, which may comprise the coupling element from the outside. For example, the coupling receptacle may be formed as a half hollow sphere with a plurality of receiving jaws. The dimensions of the coupling element and coupling receptacle are provided so that the coupling receptacle can be easily pushed onto the coupling element when the coupling receptacle is placed under an angle inclined relative to the axial direction of the coupling element, so that it partially surrounds the coupling element. However, when pulled on the thus coupled coupling device in the axial direction of the coupling element, the coupling device experiences a higher resistance than obliquely thereto, which causes pulling the filter element can be pulled out of the filter housing with pulling. By tilting the lid against the axial direction, however, the lid can be released from the coupling device and removed separately. The coupling device thus makes it possible to exert different forces on the connection of the cover and the filter element as a function of the relative orientation of the cover and the filter element relative to the axial direction. The sealing device seals in the coupled state of the coupling device, the clean side against the raw side of the filter system and both sides against the environment.

When removing the filter element for exchange from the filter housing so the filter element can be pulled out with the lid. Since the sealing device is arranged on the filter element and the seal to the lid continues to seal, it can be prevented that the environment is contaminated by draining fluid.

The cover of the filter system can usually be made of a polymer, such as thermoplastic, but also a preparation of a metallic material is conceivable. The coupling device itself may be made of the same material as the cover and / or the material of the end plate of the filter element, for example polyurethane.

Advantageously, in the end position of coupled coupling element and coupling receptacle, the sealing device seal the raw side of the filter system against the clean side of the filter system and / or the sealing device seal the filter housing against the cover. The sealing device can consist of two seals, of which one seal seals the filter element with its raw side against the cover, on which an outlet of the filter system can be arranged, which represents the clean side. The other seal can connect the filter housing and the lid tightly against the environment, so that the fluid can not escape from the filter system.

Preferably, however, the sealing device may have a joint seal arranged on a seal carrier for sealing the clean side against the raw side and the filter housing against the lid. The advantage of a common seal is not only that a component can be saved, but also in that the seal can work so reliable, since the filter system can not be overdetermined so constructive, since it is only sealed at a point where the Seal is then pressed. Thus, the seal can be conveniently arranged as a unit on the filter element.

In an advantageous embodiment, the filter housing, cover and seal carrier may have a chambering of the sealing device which comprises at least two sealing surfaces and a retaining contour, wherein preferably the at least two sealing surfaces enclose an angle which is greater than 45 ° and less than 135 °, preferably greater than 60 ° and less than 120 °, most preferably 90 °. The advantage of the inventive arrangement of the seal in a seal carrier is that the seal can be flexibly fixed to the upper end plate of the filter element for tolerance compensation. The seal is relieved of a fixation of the filter element, since the filter element holds itself. The seal in turn is held in the seal carrier with the retaining contour in a groove and fixed, wherein the seal carrier abut against the end plate and / or on the lid of the filter system and can hold. About the seal carrier and positioning of the seal to the lid is possible.

Conveniently, the seal carrier may have one or more holding elements for connection to an end disk of the filter element and / or to the lid. By means of these retaining elements, the seal carrier can be positioned and fixed and can thus be removed with the filter element and / or with the cover from the filter system, for example to replace the seal.

It is also expedient if the seal carrier has recesses for flowing through the fluid. Through these recesses, the fluid can flow to the outside of the filter body, from where it can flow into the interior of the filter body and is filtered.

In an expedient embodiment, the lid can be connected by means of a screw connection with the filter housing. As a result, a solid and reliable under harsh environmental conditions connection of lid and filter housing is guaranteed, and by the solid compression of the seal with the seal carrier also a permanent seal of the filter system to the outside and from raw to clean side of the filter element.

Conveniently, the coupled coupling receptacle can be rotatably arranged in the axial direction against the coupling element. In this way, the lid can be rotated even with mounted coupling device, if it should be screwed tight against the filter housing, for example via a screw.

Advantageously, the filter element can be pulled out of the filter housing with the cover coupled via the coupling device in the axial direction, wherein the cover can be released from the coupling device by tilting under the angle inclined relative to the axial direction of the coupling element. With the lid, which is aligned so that the coupling receptacle is aligned in the axial direction to the coupling element, due to the higher possible tensile force on the coupling device, the filter element can be pulled out of the filter housing. However, if the cover is tilted so that the coupling receptacle is inclined at an angle to the axial direction, the coupling receptacle can be released from the coupling element and the cover can be removed from the filter element.

In an advantageous embodiment, the coupling element can be arranged on the filter element and the coupling receptacle on the cover or the coupling element on the cover and the coupling receptacle on the filter element. In this way, the lid can be flexibly placed with the coupling receptacle on the coupling element and removed again. Alternatively, however, the reverse embodiment with the coupling element on the cover and the coupling receptacle on the filter element is conceivable.

Advantageously, the coupling device by relative tilting of the coupling receptacle under the inclined against the axial direction of the coupling element angle of the coupling element can be solved. Tilting the coupling receptacle reduces an effective axis of the coupling element engaged with the coupling receptacle so that the coupling element can slide out of the coupling receptacle.

Advantageously, the coupling element can have a smaller extent in an axial direction than in a direction transverse to the axial direction, so that coupling receptacle and coupling element can be coupled and released as intended by tilting at an angle to the axial direction. This allows the coupling receptacle in the form of a quick coupling easily and quickly connect to the coupling element and also solve again.

In particular, a release of the coupling receptacle of the coupling element is possible if the angle between 5 ° and 20 °, in particular at least 10 °, since then the effective axis of the coupling element, which is covered by the coupling receptacle, smaller than the longer axis of the disc-shaped coupling element is and so the coupling element can slide out of the coupling receptacle.

Advantageously, the coupling element may be disc-shaped transversely to the axial direction. A disk-shaped shape can be considered as an extreme form of an ellipsoid, in which the ratio between the long and the short axis is very large. In this respect, a coupling device whose function is based on a difference between the long and short axis of the coupling element can be represented.

In an alternative embodiment, the coupling element may be formed as part of a sphere or an ellipsoid, wherein a shorter dimension of the coupling element is aligned in the axial direction. As a result, it is possible that by tilting the coupling receptacle, an effective axis of the coupling element engaged with the coupling receptacle is reduced in the projection projected onto the coupling receptacle, so that the coupling element can slide out of the coupling receptacle.

In an advantageous embodiment, the coupling device can be arranged centrally symmetrically in the filter system. This results in a favorable force distribution when pulling the filter element over the lid when the coupling device is closed. Especially with larger and heavier filter elements, as are common, for example, in the commercial vehicle sector, a symmetrical introduction of force for the function of the coupling device and its stable and comfortable handling is important.

Conveniently, the coupling element may have a bore for venting the filter system. Especially with the operation of the filter system is a hole, which is preferably arranged in the axial direction of the coupling element, a very effective vent hole. In this way, very little air remains in the Filter system, as the air can escape through the highest point of the filter system.

Advantageously, a bypass valve may be provided in the filter system, whereby a drain of the fluid from the filter system can be effected via the bore of the coupling element when opening the lid. Standing filter systems usually have a seal seat with a drain in a tank system or a reservoir, which must be raised when pulling out of the filter element. By flowing the air over the bore located in the coupling element so the filter system can be effectively emptied for a change of the filter element.

In an alternative embodiment, the lid with the filter housing also be screwed and / or braced. Since the inventive solution of the coupling device allows rotation of the coupling receptacle against the coupling element, so the lid can also be screwed low on the filter housing. Alternatively or additionally, a tension, for example via snap hook conceivable.

In another aspect, the invention relates to the use of the filter system as an oil or fuel filter. In these fluid filters usually replacement of the filter element after a predetermined mileage is necessary, so that the filter system is opened at regular intervals and removed the filter element, and a new filter element must be used, which is possible with the coupling device according to the invention in an advantageous manner.

According to a further aspect, the invention relates to a filter element for installation in a filter system, comprising an end plate with a sealing device arranged thereon and a coupling part of a coupling device arranged thereon, which is provided for cooperation with a corresponding coupling part of the coupling device. The corresponding coupling part is arranged on the cover of the filter system, so that when coupled coupling device, the filter element with the lid can be pulled out of the filter housing of the filter system.

Advantageously, the coupling parts may comprise a coupling element and a corresponding coupling receptacle, wherein the coupling element in a axial direction has a smaller extent than in a direction transverse to the axial direction, so that coupling receptacle and coupling element by tilting at an angle to the axial direction as intended coupled and are detachable, wherein the coupled coupling device undergoes a higher resistance when pulled in the axial direction than transverse to it. If the coupled coupling device is pulled in the axial direction of the coupling element, the coupling device experiences a higher resistance than obliquely, which causes the filter element to be pulled out of the filter housing when the cover is pulled. By tilting the lid against the axial direction, however, the lid can be released from the coupling device and removed separately. The coupling device thus makes it possible to exert different forces on the connection of the cover and the filter element as a function of the relative orientation of the cover and the filter element relative to the axial direction.

In an advantageous embodiment, the sealing device can provide a arranged on a seal carrier common seal for sealing clean side against the raw side and filter housing against the lid of the filter system. The advantage of a common seal is not only that a component can be saved, but also in that the seal can work so reliable, since the filter system can not be overdetermined so constructive, since it is only sealed at a point where the Seal is then pressed. Thus, the seal can be conveniently arranged as a unit on the filter element.

Brief description of the drawings

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

They show by way of example:

1 a sectional view of a filter element with obliquely attached cover for placing or releasing the lid of the filter element according to an embodiment of the invention;

2 a sectional view of a filter system with an attached lid according to an embodiment of the invention;

3 an isometric view of a filter system with the lid removed according to an embodiment of the invention;

4 a sectional view of a filter system with an attached lid according to another embodiment of the invention;

5 a detail section of a filter system with focus on the sealing device according to another embodiment of the invention;

6 a sectional view of a filter system with an attached lid according to another embodiment of the invention;

7 a sectional view of a filter system with an attached lid according to another embodiment of the invention;

8th an isometric view of a filter element according to an embodiment of the invention;

9 an isometric view of a seal carrier according to an embodiment of the invention;

10 an isometric view of a filter element with attached seal carrier according to an embodiment of the invention;

11 an isometric view of a lid according to an embodiment of the invention; and

12 an isometric view of a filter housing according to an embodiment of the invention.

Embodiments of the invention

In the figures, the same or similar components are numbered with the same reference numerals. The figures are merely examples and are not intended to be limiting.

1 shows a sectional view of a filter element 10 with obliquely attached lid 110 for putting on or loosening the lid 110 from the filter element 10 according to an embodiment of the invention. The filter system 100 for filtering a fluid comprises a filter element 10 , a filter housing 108 with a lid 110 , one on the filter element 10 arranged sealing device 20 to separate a raw page 52 of the filter element 10 from a clean side 50 , as well as a coupling device 30 consisting of at least two coupling parts 31 . 33 for coupling the filter element 10 with the lid 110 , wherein the coupling parts 31 . 33 a coupling element 36 and a corresponding coupling receptacle 34 include. In this case, the coupling device ( 30 ) a quick coupling device. Next is the sealing device 20 in an end position of coupled coupling element 36 and coupler pocket 34 in their sealing position 18 arranged.

The filter system according to the invention 100 , which is preferred as a stagnant filter system 100 can be used on an internal combustion engine, has a filter element 10 on, on its upper front 14 on an upper end disc 16 a coupling device 30 comprises, which is designed in the form of a quick coupling. The coupling element 36 is for example at the end plate 16 of the filter element 10 around the outlet 104 arranged and the coupling receptacle 34 on the lid 110 , Alternatively, a reverse arrangement is also conceivable. The coupling element 36 is formed in the form of a flattened in the axial direction L disc with the shorter axis in the axial direction L, wherein the coupling element 30 is formed rotationally symmetrical about the axial direction L, while the coupling receptacle 34 for example in the form of a hollow sphere with several receiving jaws 44 for gripping the coupling element 36 may be formed, which is the coupling element 36 may include from the outside. For example, the coupling receptacle 34 as a half hollow sphere with several receiving jaws 44 be educated. The dimensions of coupling element 36 and coupler pocket 34 are provided so that the coupling receptacle 34 when fitting the coupling receptacle 34 under one against the axial direction L of the coupling element 36 inclined angle α easily on the coupling element 36 can be pushed so that they the coupling element 36 partially surrounds. However, on the so-coupled coupling device 30 in the axial direction L of the coupling element 36 pulled, experiences the coupling device 30 a higher resistance than oblique, which causes pulling on the lid 110 the filter element 10 out of the filter housing 108 can be pulled out. By tilting the lid 110 against the axial direction L, however, the lid can 110 from the coupling device 30 be solved and removed separately. The coupling device 30 allows it so, depending on the relative orientation of the lid 110 and filter element 10 to the axial direction L different forces on the connection of cover 110 and filter element 10 exercise.

In this case, the coupling element 36 in an axial direction L a smaller extent than in a direction transverse to the axial direction L, so that coupling receptacle 34 and coupling element 36 tilted by an angle α against the axial direction L can be coupled as intended and released. In particular, a release of the coupling receptacle of the coupling element is possible if the angle between 5 ° and 20 °, in particular at least 10 °. This makes it possible that by tilting the coupling receptacle 34 one in engagement with the coupling receptacle 34 standing effective axis of the coupling element 36 in the on the coupling receptacle 34 projected Expansion decreases, so that the coupling element 36 from the coupler pocket 34 can slip out.

The sealing device 20 seals in the coupled state of the coupling device 30 the clean side 50 against the raw side 52 of the filter system 100 as well as both sides against the environment. As in 2 shown, the seal can 25 in closed state, the clean side 50 of the filter system 100 against the raw side 52 seal, while the seal 24 the filter element 10 against a filter housing 108 can seal.

When removing the filter element 10 out of the filter housing 108 for replacement, the sealing device remains 20 on the filter element 10 and is pulled up with it. Since the seal to the lid continues to seal, can be prevented so that the environment is polluted by draining fluid.

The coupling element 36 in 1 is formed disc-shaped transverse to the axial direction L. The coupling device 30 is centrally symmetrical about an outlet 104 of the filter system 100 arranged, with the coupled coupling receptacle 34 against the coupling element 36 is rotatably arranged in the axial direction L.

There may be provided a quick coupling with which the lid 110 with the filter housing 108 is connectable. Alternatively, the lid 110 with the filter housing 108 be screwed and / or braced.

2 shows a sectional view of a filter system 100 with attached lid 110 according to an embodiment of the invention. With the lid on 110 and closed coupling device 30 , ie in the end position of coupled coupling element 36 and coupler pocket 34 , seals the sealing device 20 the raw side 52 of the filter system 100 against the clean side 50 of the filter system 100 and connects the sealing device 20 the filter housing 108 and the lid 110 tight. So is the sealing device 20 in their sealing position 18 reached.

In 3 is an isometric view of a filter system 100 with the lid removed 110 to see according to an embodiment of the invention. In the lid 110 is a coupler holder 34 the coupling device 30 arranged, the four individual intake jaws 44 which is about that on the end disc 16 of the filter element 10 around the outlet 104 arranged coupling element 36 grab and record this. The coupling element 36 is as a ring around the outlet 104 placed and has at his the coupling receptacle 34 and the lid 110 facing side of the seal 25 for sealing the filter element 10 with its clean side 50 against the raw side 52 of the filter system 100 on.

4 shows a sectional view of a filter system 100 with attached lid 110 according to a further embodiment of the invention. In the embodiment in 4 is the coupling element 36 formed as part of a sphere or an ellipsoid, wherein a shorter dimension 40 of the coupling element 36 aligned in the axial direction L. Next, the sealing device 20 a common seal 24 for sealing the clean side 50 against raw side 52 and filter housing 108 against cover 110 on, with the coupling device closed 30 in their sealing position 18 unfiltered side 52 against clean side 50 of the filter element 10 and the filter system 100 seals against the environment. The seal 24 is in the embodiment of a seal carrier 22 in their position during assembly of the filter element 10 fixed, as in 5 can be seen more clearly.

In 5 is a detail section of a filter system 100 with focus on the sealing device 20 to see a further embodiment of the invention. filter housing 108 , Lid 110 and seal carrier 22 have a chambering of the sealing device 20 on which at least two sealing surfaces 19 . 21 and a holding contour 23 comprising, wherein preferably the two sealing surfaces 19 . 21 include an angle α which is greater than 45 ° and less than 135 °, preferably greater than 60 ° and less than 120 °, most preferably 90 °. The seal 24 is in the embodiment of a seal carrier 22 in their position during assembly of the filter element 10 fixed. This is the seal 24 on the one hand with the retaining contour 23 in a groove 26 of the seal carrier 22 where they are for the assembly and disassembly of the filter element 10 is fixed. The other is the seal 24 with a sealing surface 21 in a groove 28 of the filter housing 108 , while from above a rounding 29 of the lid 110 on another sealing surface 19 is applied. The seal 24 itself has a crescent-shaped cross-section to provide a favorable fit for its tripartite sealing function.

Used as a coupling element 36 uses an embodiment which has a closed shape at the location of the outlet 104 has, so the coupling element 36 For example, has a flattened ball, as in 6 shown, the coupling element 36 a hole 38 for venting the filter system 100 exhibit. Especially when the filter system is stopped 100 makes a hole 38 which preferably in the axial direction L of the coupling element 36 is arranged, a very effective vent hole. In this way, very little air remains in the filter system 100 . because the air is above the highest point of the filter system 100 can escape.

Also in this embodiment in 6 can, as shown, the common sealing device 20 for sealing the raw side 52 against clean side 50 as well as filter housing 108 against cover 110 and environment are used.

Next, a bypass valve in the filter system 100 be provided, which over the bore 38 of the coupling element 36 when opening the lid 110 a drain of the fluid from the filter system 100 is feasible. Standing filter systems usually have a sealing seat with a drain in a tank system or a reservoir, which upon withdrawal of the filter element 10 must be raised. By flowing the air over in the coupling element 36 located hole 38 so can the filter system 100 for a change of the filter element 10 be effectively emptied.

7 shows a sectional view of a filter system 100 with attached lid 110 according to a further embodiment of the invention. The embodiment is similar to that in FIG 6 illustrated embodiment and also uses the common sealing device 20 with a seal 24 in a seal carrier 22 is inserted. The seal 24 so seals the raw side 52 against the clean side 50 as well as filter housing 108 against cover 110 and surroundings. Unlike the in 6 illustrated embodiment, the in 7 shown filter system 100 a filter element 10 on, the coupling device 30 one on the seal carrier 22 arranged coupling receptacle 34 with intake jaws 44 having, which with a coupling element 36 on the inside of the lid 110 is arranged, corresponds and coupled. The coupling jaws 44 so can the coupling element 36 cover and fix. This allows the filter element 10 by means of the lid 110 also from the filter housing 108 be removed when changing. The coupling element 36 has a lower extent in its height 40 on as lateral. The seal carrier 22 in turn has retaining elements on its underside 46 on, with which the seal carrier 22 at the end disc 16 at a removal of the filter element 10 out of the filter housing 108 Can attack this over the top of the lid 110 coupled seal carrier 22 to raise. Next, the seal carrier 22 at its outer edge recesses 49 on, which together with corresponding recesses 48 in the end plate, a flow through the fluid on the raw side 52 allow.

The lid 110 of the filter system 100 is at its outer edge by means of screwing 122 on the filter housing 108 attached. The screw connection 122 can use a sleeve 126 , as in 6 represented, or directly by cover 110 and a flange 124 of the filter housing 108 respectively.

In 8th is an isometric view of a filter element 10 to see according to an embodiment of the invention. The filter element 10 points to a front page 14 of the filter body 12 an upper end disc 16 on, its edge over the diameter of the end plate 16 protrudes. The outer edge of the end plate 16 that is about the diameter of the end disc 16 protrudes, has a series of recesses 48 on, by which after installation in a filter system 100 the fluid on the raw side 52 can flow through to the outside of the filter body 12 in the interior of the filter body 12 to flow in and thereby to be filtered.

9 shows an isometric view of a seal carrier 22 according to an embodiment of the invention. The seal carrier 22 has several retaining elements 46 for connection to an end plate 16 of the filter element 10 on what about the filter element 10 when the seal carrier 22 to the lid 110 is coupled from a filter housing 108 can be removed. Next, the seal carrier 22 recesses 49 for flowing through the fluid. Central is on the seal carrier 22 a coupler pocket 34 with individual intake jaws 44 arranged over which the seal carrier with filter element 10 to a coupling element 36 For example, in the lid 110 can be arranged, can be coupled. At the outer edge of the seal carrier carries a groove 26 into which a seal 24 can be inserted.

In 10 is a filter element 10 with attached seal carrier 22 illustrated according to an embodiment of the invention. The seal carrier 22 is over the end disc 16 of the filter element 10 clipped and over the retaining elements 46 , which in this illustration, as on the bottom of the end plate 16 , not visible, on the filter element 10 fixed. The seal 24 is in 10 in the groove 26 inserted. At the outer edge of the seal carrier 22 are the recesses 49 to detect the flow through the fluid.

11 shows an isometric view of a lid 110 according to an embodiment of the invention. The lid 110 has holes at its outer edge 128 for a screw connection 122 with a filter housing 108 on. Central is on top of the lid 110 a clutch dome 130 to see on its inside elements of a coupling device 30 can record.

12 represents a filter housing 108 according to an embodiment of the invention. The filter housing 108 , of which only an upper part in 12 is shown, points to a flange 124 a series of holes 129 for holding screws of a screw connection 122 with the lid 110 , Next is on the inside of the flange 124 a groove 28 for receiving a seal 24 in a seal carrier 22 is conveniently inserted.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202006018335 U1 [0002]

Claims (19)

Filter system ( 100 ) for filtering a fluid, comprising - a filter element ( 10 ), - a filter housing ( 108 ) with a lid ( 110 ), - one on the filter element ( 10 ) arranged sealing device ( 20 ) for separating a raw side ( 52 ) of the filter system ( 100 ) from a clean side ( 50 ), - a coupling device ( 30 ), consisting of at least two coupling parts ( 31 . 33 ) for coupling the filter element ( 10 ) with the lid ( 110 ), wherein the coupling parts ( 31 . 33 ) a coupling element ( 36 ) and a coupling receptacle ( 34 ), wherein the coupling device ( 30 ) is a quick coupling device and the sealing device ( 20 ) in an end position of coupled coupling element ( 36 ) and coupling receptacle ( 34 ) in its sealing position ( 18 ) is arranged. Filter system according to claim 1, wherein in the end position of coupled coupling element ( 36 ) and coupling receptacle ( 34 ) the sealing device ( 20 ) the raw side ( 52 ) of the filter system ( 100 ) against the clean side ( 50 ) of the filter system ( 100 ) and / or wherein the sealing device ( 20 ) the filter housing ( 108 ) against the lid ( 110 ), wherein preferably the sealing device ( 20 ) one on a seal carrier ( 22 ) arranged joint seal ( 24 ) for sealing the clean side ( 50 ) against raw side ( 52 ) and / or filter housing ( 108 ) against lid ( 110 ) having. Filter system according to claim 2, wherein filter housing ( 108 ), Lid ( 110 ) and seal carrier ( 22 ) a chambering of the sealing device ( 20 ), which at least two sealing surfaces ( 19 . 21 ) and a holding contour ( 23 ), wherein preferably the at least two sealing surfaces ( 19 . 21 ) include an angle (α) which is greater than 45 ° and less than 135 °, preferably greater than 60 ° and less than 120 °, most preferably 90 °. Filter system according to claim 2 or 3, wherein the seal carrier ( 22 ) one or more retaining elements ( 46 ) for connection to an end plate ( 16 ) of the filter element ( 10 ) and / or with the lid ( 110 ) having. Filter system according to one of claims 2 to 4, wherein the seal carrier ( 22 ) Recesses ( 48 ) for flowing through the fluid. Filter system according to one of the preceding claims, wherein the lid ( 110 ) by means of a screw connection ( 122 ) with the filter housing ( 108 ) connected is. Filter system according to one of the preceding claims, wherein the coupled coupling receptacle ( 34 ) against the coupling element ( 36 ) is rotatably arranged in the axial direction (L). Filter system according to one of the preceding claims, wherein the filter element ( 10 ) with the via the coupling device ( 30 ) coupled lid ( 110 ) in the axial direction (L) from the filter housing ( 108 ) is extendible, wherein the lid ( 110 ) by tilting under the against the axial direction (L) of the coupling element ( 36 ) inclined angle (α) from the coupling device ( 30 ) is solvable. Filter system according to one of the preceding claims, wherein the coupling element ( 36 ) on the filter element ( 10 ) and the coupling receptacle ( 34 ) on the lid ( 110 ) or the coupling element ( 36 ) on the lid ( 110 ) and the coupling receptacle ( 34 ) on the filter element ( 10 ) are arranged. Filter system according to one of the preceding claims, wherein the coupling device ( 30 ) by relative tilting of the coupling receptacle ( 34 ) under the against the axial direction (L) of the coupling element ( 36 ) inclined angle (α) of the coupling element ( 36 ) is solvable. Filter system according to one of the preceding claims, wherein the coupling element ( 36 ) in an axial direction (L) has a smaller extent than in a direction transverse to the axial direction (L), so that coupling receptacle ( 34 ) and coupling element ( 36 ) by tilting by an angle (α) against the axial direction (L) are intended coupling and releasable, wherein preferably the angle (α) between 5 ° and 20 °, more preferably at least 10 °. Filter system according to one of the preceding claims, wherein the coupling element ( 36 ) is formed disc-shaped transversely to the axial direction (L). Filter system according to one of claims 1 to 11, wherein the coupling element ( 36 ) is formed as part of a sphere or an ellipsoid, wherein a shorter dimension ( 40 ) of the coupling element ( 36 ) is aligned in the axial direction (L). Filter system according to one of the preceding claims, wherein the coupling device ( 30 ) centrally symmetrical about an outlet ( 104 ) of the filter system ( 100 ) is arranged. Filter system according to one of the preceding claims, wherein the coupling element ( 36 ) a hole ( 38 ) for venting the filter system ( 100 ) having. Filter system according to claim 15, wherein a bypass valve in the filter system ( 100 ) is provided, whereby over the bore ( 38 ) of the coupling element ( 36 ) when opening the lid ( 110 ) a drain of the fluid from the filter system ( 100 ) is feasible. Filter element ( 10 ) for installation in a filter system ( 100 ) according to one of the preceding claims, comprising an end plate ( 16 ) with a sealing device arranged thereon ( 20 ) and a coupling part arranged thereon ( 31 . 33 ) a coupling device ( 30 ), which cooperate with a corresponding coupling part ( 33 . 31 ) of the coupling device ( 30 ) is provided. Filter element according to claim 17, wherein the coupling parts ( 31 . 33 ) a coupling element ( 36 ) and a corresponding coupling receptacle ( 34 ), wherein the coupling element ( 36 ) in an axial direction (L) has a smaller extent than in a direction transverse to the axial direction (L), so that coupling receptacle ( 34 ) and coupling element ( 36 ) by tilting by an angle (α) against the axial direction (L) can be coupled and released as intended, wherein the coupled coupling device ( 30 ) experiences a higher resistance when pulled in the axial direction (L) than transversely thereto. Filter element according to claim 17 or 18, wherein the sealing device ( 20 ) one on a seal carrier ( 22 ) arranged joint seal ( 24 ) for sealing the clean side ( 50 ) against raw side ( 52 ) and filter housing ( 108 ) against lid ( 110 ) of the filter system ( 100 ).

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