Filter arrangement

Patent metadata

Field	Value
Publication number	US-11517839-B2
Application number	US-201916669502-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Oct 31, 2018
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A filter arrangement may include a filter housing and a ring filter element arranged in the filter housing. The ring filter element may include an upper end plate, a lower end plate, and a filter material arranged therebetween. An axially projecting pin may be disposed on the lower end plate and may engage into a channel on a filter housing side. The filter arrangement may also include a tubular dome which may engage into an interior of the ring filter element. The tubular dome may have a guide contour. The guide contour may cooperate with a guide element arranged on the ring filter element and may have an axial groove. The guide contour may be configured as at least one of a circular ramp and a chamfered cannula. On the upper end plate, an axial stop may project into the interior of the ring filter element.

First claim

The invention claimed is:

1. A filter arrangement, comprising:
a filter housing;
a ring filter element arranged in the filter housing;
the ring filter element including an upper end plate, a lower end plate, and a filter material arranged therebetween;
an axially projecting pin disposed on the lower end plate, which, when the filter arrangement is mounted, engages into a channel on a filter housing side;
a tubular dome which, when the filter arrangement is mounted, engages into an interior of the ring filter element;
the tubular dome having a guide contour at a free end of the tubular dome, the guide contour cooperating with a guide element arranged on the ring filter element, the guide contour having an axial groove to which the guide element is guided on mounting of the filter arrangement, and the guide contour arranged relative to the pin such that the pin is guidable into the channel on the filter housing side, in so far as the guide element enters into the axial groove;
the guide contour configured as at least one of a circular ramp and a chamfered cannula; and
wherein, on the upper end plate, an axial stop is arranged, the axial stop projecting into the interior of the ring filter element and configured in a complementary manner to the guide contour at the free end of the tubular dome; and
wherein, when the ring filter element is mounted in the filter arrangement, the axial stop lies flat against the guide contour.

2. The filter arrangement according to claim 1 , further comprising a slide-off barrier arranged radially externally on the axial stop, wherein, when the ring filter element is mounted in the filter arrangement, the slide-off barrier lies externally against the tubular dome.

3. The filter arrangement according to claim 2 , wherein the slide-off barrier extends by a circumferential angle α of at least 90°.

4. The filter arrangement according to claim 2 , wherein the slide-off barrier is integrally provided with the axial stop and the upper end plate as a single piece.

5. The filter arrangement according to claim 1 , wherein the guide element is configured as a radially inwardly directed guide pin.

6. The filter arrangement according to claim 1 , wherein the guide element is arranged on a support structure-like inner frame of the ring filter element, and wherein the guide element is surrounded on an end face by a respective end plate of the upper end plate and the lower end plate.

7. The filter arrangement according to claim 1 , wherein at least one of:
the guide contour is configured as the circular ramp, and the axial groove is arranged between a highest point of the circular ramp and a lowest point of the circular ramp; and
the guide contour is configured as the chamfered cannula, and the axial groove is arranged at a lowest point of the chamfered cannula.

8. A ring filter element for a filter arrangement, comprising:
an upper end plate, a lower end plate, and a filter material arranged therebetween;
an axially projecting pin disposed on the lower end plate;
a guide element;
an axial stop arranged on the upper end plate and projecting into an interior of the ring filter element; and
wherein the axial stop is configured as at least one of a circular ramp and a chamfered cannula wherein the axial stop has at least one axial surface that extends transversely to a radial direction.

9. The ring filter element according to claim 8 , further comprising a slide-off barrier arranged radially externally on the axial stop.

10. The ring filter element according to claim 9 , wherein at least one of:
the slide-off barrier extends by a circumferential angle α of at least 90°; and
the slide-off barrier is integrally provided with the axial stop and the upper end plate as a single piece.

11. The filter arrangement according to claim 1 , wherein the guide contour is configured as the circular ramp, and wherein the axial stop is configured as a second circular ramp complementary to the guide contour such that the axial stop at least partially defines a negative contour of the guide contour.

12. The filter arrangement according to claim 1 , wherein the guide contour is configured as the chamfered cannula, and wherein the axial stop is configured as a second chamfered cannula complementary to the guide contour such that the axial stop at least partial defines a negative contour of the guide contour.

13. The filter arrangement according to claim 1 , wherein the pin is composed of an elastic material.

14. The filter arrangement according to claim 1 , wherein, when the ring filter element is mounted in the filter arrangement, twisting of the ring filter element is prevented via interaction between the axial stop and the guide contour.

15. The filter arrangement according to claim 2 , wherein the slide-off barrier extends by a circumferential angle α of at least 120°.

16. The filter arrangement according to claim 2 , wherein the slide-off barrier is integrally provided with the axial stop and the upper end plate as a single, plastic injection moulded piece.

17. A filter arrangement, comprising:
a filter housing;
a ring filter element arranged in the filter housing;
the ring filter element including an upper end plate, a lower end plate, and a filter material arranged therebetween;
an axially projecting pin disposed on the lower end plate, which, when the filter arrangement is mounted, engages into a channel on a filter housing side and closes the channel;
a tubular dome which, when the filter arrangement is mounted, engages into an interior of the ring filter element;
the tubular dome having a guide contour at a free end of the tubular dome, the guide contour cooperating with a guide element arranged on the ring filter element, the guide contour having an axial groove to which the guide element is guided on mounting of the filter arrangement, and the guide contour arranged relative to the pin such that the pin is guidable into the channel on the filter housing side, in so far as the guide element enters into the axial groove;
the guide contour configured as at least one of a circular ramp and a chamfered cannula; and
wherein, on the upper end plate, an axial stop is arranged, the axial stop projecting into the interior of the ring filter element and configured in a complementary manner to the guide contour at the free end of the tubular dome;
wherein, when the ring filter element is mounted in the filter arrangement, the axial stop lies flat against the guide contour; and
wherein the filter material is configured as a pleat star folded in a zigzag shape.

18. The filter arrangement according to claim 17 , wherein the ring filter element further includes an inner frame, and wherein the guide element is a guide pin projecting radially inward from the inner frame.

19. The filter arrangement according to claim 17 , wherein the tubular dome is arranged on one of i) the filter housing, and ii) a separate component disposed within the filter housing.

Assignees

• Mahle Int Gmbh

Inventors

• Hensinger Heiko

Classifications

• B01D46/0004

  Details of removable closures, lids, caps or filter heads · CPC title

• B01D2201/0415

  Details of supporting structures · CPC title

• B01D2201/295

  with projections extending in a radial outward direction, e.g. for use as a guide, spacing means · CPC title

• B01D35/153 Primary

  Anti-leakage or anti-return valves · CPC title

• F02M37/42

  Installation or removal of filters · CPC title