Filter appliance

Patent metadata

Field	Value
Publication number	US-9731235-B2
Application number	US-201414767731-A
Country	US
Kind code	B2
Filing date	Feb 12, 2014
Priority date	Feb 14, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A filter appliance may include a filter housing and a ring filter element having an axis and being mountable in the filter housing. The filter element may include a first axial end disc having a protruding pin configured to engage into a channel of the filter housing. The filter housing may have an interior including a first region and the ring filter element may include a second region associated with the first region. A guide contour may be arranged on one of the first region and the second region, and a first guide element and a second guide element may be disposed on the other of the first region and the second region. The guide contour may include a first axial groove and a second axial groove configured to receive the first guide element and the second guide element to define a key and lock interaction.

First claim

The invention claimed is:

1. A filter appliance comprising: a filter housing and a ring filter element having an axis and being mountable in the filter housing,
the ring filter element including a first axial end disc, having an axially protruding pin configured to engage into a channel of the filter housing when the ring filter element is mounted in the filter housing,
the filter housing defining an interior having a first region,
the ring filter element having a second region associated with the first region,
a guide contour arranged on one of the first region and the second region,
a first guide element disposed on the other of the first region and the second region, wherein the first guide element is configured to be guided on the guide contour during the mounting of the ring filter element in the filter housing,
the guide contour including a first axial groove,
wherein the axially protruding pin engages into the channel and the first guide element engages into the first axial groove of the guide contour when the ring filter element is mounted in the filter housing,
the guide contour further including at least one second axial groove, and
a second guide element disposed on the one of the first region and the second region including the first guide element, the second guide element associated with a second axial groove disposed on the guide contour,
wherein the first axial grooves and the second axial groove are disposed complementary to the associated first guide elements and the second guide element to define a lock and key interaction between the filter housing and the ring filter element.

2. The filter appliance according to claim 1 , wherein the first axial grooves has at least one of a different shape and a different size with respect to the second axial groove.

3. The filter appliance according to claim 1 ,
wherein the ring filter element is mountable into the filter housing via a mounting movement including guiding at least one of the first guide element and the second guide element on the guide contour.

4. The filter appliance according to claim 3 , wherein the first axial groove and the second axial grove of the guide contour each include an inlet cross-section receiving the associated first guide element and the second guide element, and wherein the inlet cross-section of at least one of the first axial groove and the second axial groove increases in a direction along the mounting movement.

5. The filter appliance according to claim 1 , wherein the guide contour defines a circular ramp.

6. The filter appliance according to claim 1 , wherein the guide contour includes at least two ramps extending in opposite directions with respect to one another.

7. The filter appliance according to claim 4 , wherein the inlet cross-section of the first axial groove has a different extent than the inlet cross-section of the second axial groove, and wherein the one of the first axial groove and the second axial groove with the greatest inlet cross-section is arranged along a height of the guide contour at a lower position with respect to the first axial end disc than the other of the first axial grooves and the second axial groove.

8. The filter appliance according to claim 1 , wherein:
the guide contour is arranged on a dome of the filter housing engaging into an interior of the ring filter element, and
the first guide elements and the second guide element are arranged on an inner circumference of the ring filter element facing the dome.

9. The filter appliance according to claim 1 , wherein:
the guide contour is arranged on an outer circumference of the ring filter element facing the filter housing, and
the first guide elements and the second guide element are arranged on an inner circumference of the filter housing facing the outer circumference of the ring filter element.

10. The filter appliance according to claim 1 , characterized in that wherein:
the guide contour is arranged on an inner circumference of the filter housing facing the ring filter element, and
the first guide elements and the second guide element are arranged on an outer circumference of the ring filter element facing the inner circumference of the filter housing.

11. The filter appliance according to claim 1 , wherein the guide contour is arranged on a dome of the filter housing projecting into an interior of the ring filter element, wherein the dome includes an axial face side defining at least one ramp increasing in an axial direction from a first point to a second point.

12. The filter appliance according to claim 11 , wherein the first axial groove defines an inlet cross-section having a radial extent different from an inlet cross-section defined by the second axial groove, and wherein one of the first axial groove and the second axial groove having the inlet cross-section with the greatest radial extent is disposed at the first point of the at least one ramp.

13. The filter appliance according to claim 11 , wherein the axial face side of the dome defines at least two ramps extending in opposite directions with respect to one another, and wherein each ramp increases in the axial direction from a first point to a second point.

14. The filter appliance according to claim 11 , wherein the first guide element and the second guide element are arranged on an inner circumference of the ring filter element facing the dome.

15. The filter appliance according to claim 2 , wherein the guide contour defines a circular ramp.

16. The filter appliance according to claim 15 , wherein the guide contour is arranged on a dome of the filter housing engaging into an interior of the ring filter element; and
wherein the first guide element and the second guide element are arranged on an inner circumference of the ring filter element facing the dome.

17. The filter appliance according to claim 15 , wherein the guide contour is arranged on an outer circumference of the ring filter element facing the filter housing; and
wherein the first guide element and the second guide element are arranged on an inner circumference of the filter housing facing the outer circumference of the ring filter element.

18. The filter appliance according to claim 15 , wherein the guide contour is arranged on an inner circumference of the filter housing facing the ring filter element; and
wherein the first guide element and the second guide element are arranged on an outer circumference of the ring filter element facing the inner circumference of the filter housing.

19. The filter appliance according to claim 3 , wherein the guide contour includes at least two ramps extending in opposite directions with respect to one another.

20. A filter appliance, comprising:
a filter housing and a ring filter element having an axis and being mountable in the filter housing, wherein the ring filter element includes a first axial end disc having an axially protruding pin configured to engage into a channel of the filter housing when the ring filter element is mounted in the filter housing;
the filter housing defining an interior including a first region, and the ring filter element including a second region associated with the first region;
a guide contour arranged on one of the first region of the filter housing and the second region of the ring filter element, wherein the guide contour includes at least a first axial groove and a second axial groove, the first axial groove including at least one of a different shape and a different size with respect to the second axial groove; and

Assignees

• Mahle Int Gmbh

Inventors

• Grass Uwe
• Preissinger Markus

Classifications

• B01D2201/0415

  Details of supporting structures · CPC title

• B01D2201/4007

  Use of cam or ramp systems · CPC title

• B01D2201/4053

  using keys · CPC title

• B01D29/21

  with corrugated, folded or wound sheets · CPC title

• B01D35/16

  Cleaning-out devices {, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid} · CPC title