A filter insert that can be locked to the housing cover, equipped with support elements for the filter media body.

Abstract

The present invention relates to a filter insert comprising at least one filter media body. Downstream, the filter insert is supported by a grid portion of a support element. The grid portion has planar flow openings and is preferably formed by intersecting ribs. The support element is designed integrally with the grid portion and has at least one locking means capable of locking the filter insert to the housing cover of the filter device. A sealing element is held by the support element and, in the locked state, seals the filter insert against the housing cover. When the filter housing is opened, the filter insert remains held in place by its locking to the housing cover. Therefore, dirt accumulated on the unfiltered side (between the filter insert and the housing cover) does not enter the lower part of the housing which has a clean outlet.

Claims

1. Filter inserts (20; 70), particularly air filter inserts, At least one filter media body (26; 26a, 26b) that can flow from the inlet side (32) to the outlet side (34), Support elements (28) (28) are held by the filter media body (26; 26a, 26b) and have at least one first locking means (40) capable of locking the filter insert (20; 70) to the housing cover (14), The system comprises a circumferential sealing element (30) held by the support element (28), The support element (28) extends across the outflow surface (34) of the filter media body (26; 26b) and has a grid portion (36) formed integrally with the at least one first locking means (40), which is a filter insert (20; 70).

2. The filter insert (20; 70) according to claim 1, wherein the first locking means (40) includes a locking nose (48).

3. The filter insert (20;70) according to claim 1 or 2, wherein at least two first locking means (40) are formed on two opposing longitudinal sides (42) of the filter insert (20;70).

4. The filter insert (20; 70) according to any one of claims 1 to 3, wherein the sealing element (30) is irremovably held by the support element (28) and is in particular molded to the support element (28).

5. The filter insert (20; 70) according to claim 4, wherein the support element (28) includes a stay (76) with a notch (78) located in the middle, and the sealing element (30) extends through the notch (78) and engages with the stay (76).

6. The filter insert (20; 70) according to any one of claims 1 to 5, wherein the at least one filter media body (26; 26a, 26b) and the support element (28) are held together by the sealing element (30).

7. The filter insert (20; 70) according to claim 6, wherein the at least one filter media body (26; 26a, 26b) is framed by a circumferential frame (80; 82), and the frame (80, 82) is embedded in the sealing element (30).

8. The filter insert (20; 70) according to claim 7, wherein the frame (80; 82) includes or is composed of a nonwoven fabric material.

9. A filter insert (70) according to any one of claims 1 to 8, comprising two filter media bodies (26a, 26b) that can be connected in series, wherein the first filter media body (26a) contains a particle filter medium, and the second filter media body (26b) contains an adsorption filter medium, particularly an adsorption filter medium containing activated carbon.

10. The filter insert (70) according to claim 9, wherein both filter media bodies (26; 26a, 26b) are held in place by the support element (28) by the sealing element (30).

11. The filter insert (70) according to claim 10, wherein both filter media bodies (26a, 26b) are framed by a common frame embedded in the sealing element (30).

12. The filter insert (70) according to claim 10, wherein both filter media bodies (26a, 26b) are framed by circumferential frames (80, 82), and at least one of the frames (80, 82) is embedded in the sealing element (30).

13. The filter insert (70) according to claim 12, wherein the frame (80) of the first filter media body (26a) in the flow direction extends at least to the outflow surface (34) of the second filter media body (26b) in the flow direction, and the two frames (80, 82) are embedded in the sealing element (30).

14. The filter insert (70) according to claim 12, wherein the two frames are bonded to each other.

15. Filter device (10; 84), in particular an air filter device, A filter housing (12) comprising a housing cover (14) having an inlet (22) and a housing bottom (16) having an outlet (24), A filter insert (20; 70) according to any one of claims 1 to 14, comprising: The housing cover (14) comprises at least one second locking means (50) configured to correspond to the at least one first locking means (40) of the filter insert (20; 70), In the installed state, the unfiltered side (60) within the filter housing (12) is sealed to the clean side (62) by the sealing element (30), in the filter device (10; 84).

16. The filter device according to claim 15 (10; 84), wherein the second locking means (50) is formed by a through hole (52) and an edge (54) defining the through hole (52).

17. In the installed state, the housing cover (14) and the housing bottom (16) are sealed to each other by the sealing element (30), the filter device according to claim 15 or 16 (10; 84).

18. The filter device according to any one of claims 15 to 17, wherein the housing cover (14) has a circumferential collar (56) that abuts against the sealing element (30), and / or the housing bottom (16) has a circumferential sealing surface (64) that abuts against the sealing element (30).

19. Use of a filter insert (20; 70) according to any one of claims 1 to 14, and more particularly a filter device (10; 84) according to any one of claims 15 to 18, as a cathode air filter for a fuel cell (86).

20. A fuel cell (86) comprising an anode (88) and a cathode (90) with an electrolyte (92) in between, and a filter device (10; 84) according to any one of claims 15 to 18 that can guide air to the cathode (90).

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