Filter element arrangement and end cap interface feature

• US 8,486,172 B2
• Filed: 11/07/2008
• Issued: 07/16/2013
• Est. Priority Date: 11/09/2007
• Status: Active Grant

• Current Assignee: United Air Specialists, Inc (Parker-Hannifin Corporation)
• Original Assignee: United Air Specialists, Inc (Parker-Hannifin Corporation)
• Inventors: Haynam, Travis, Trame, Steve
• Primary Examiner(s): Smith, Duane
• Assistant Examiner(s): Turner, Sonji
• Application Number:
  US12/741,230
• Publication Number:
  US 20100263344A1
• Time in Patent Office: 1,712 Days
• Field of Search: 554/17, 554/28, 554/29, 55478-481, 554/90, 55493-511, 555/21, 555/29, 964/24
• US Class Current: 55/356
• CPC Class Codes: B01D 2271/022 Axial sealings
• CPC Class Codes: B01D 2273/30 Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
• CPC Class Codes: B01D 46/0005 Mounting of filtering elements within casings, housings or frames B01D46/2422 takes precedence
• CPC Class Codes: B01D 46/2411 Filter cartridges
• CPC Class Codes: B01D 46/2414 End caps including additional functions or special forms
• CPC Class Codes: B01D 46/4227 Manipulating filters or filter elements, e.g. handles or extracting tools
• CPC Class Codes: B01D 46/521 using folded, pleated material

Abstract

A filter element including an end cap is provided. The end cap includes an annular seal support carrying an annular seal member and a mounting arrangement to seal and support the filter element in a filter housing. The end cap is configure to engage with a mating engagement structure of the housing to provide self alignment feature of the filter element.

Claims

1. A filter element for a housing having a mounting panel defining an opening and having an annular sealing surface surrounding the opening, further including a cover having an annular seal load member defining an groove with a terminating flange projecting toward the opening in a closed position, the filter element comprising:

a tubular ring of filter media sized to be received through said opening;

a bottom end cap sealingly bonded to a bottom end of the tubular ring of filter media;

a top end cap, the top end cap including;

an annular disc portion having a central opening, the annular disc portion sealingly bonded to a top end of the tubular ring of filter media;

an annular seal support; and

a radial spacer wall integral with the annular disc portion spacing the annular seal support radially outward from the tubular ring of filter media, the annular seal support projecting from the radial spacer wall in a direction opposite the bottom end cap, wherein a clearance space is provided adapted to receive the terminating flange; and

an annular seal member carried by the annular seal support and adapted to seal against the annular sealing surface.

2. The filter element of claim 1, wherein the top end cap further includes an outer peripheral wall extending axially from the annular disc portion toward the bottom end, wherein the radial spacer wall extends radially outward to radially space the annular seal support from the outer peripheral wall;

wherein the annular disc portion, the outer peripheral wall, the radial spacer wall and the annular seal support are a single integral piece.

3. The filter element of claim 2, wherein an annular receiving channel is defined between the outer peripheral wall and the annular seal support, wherein the terminal flange is received in the closed position.

4. The filter element of claim 1, wherein the annular seal support defines an annular groove facing the annular sealing surface when mounted in the housing, the annular seal member being not unitary with the end cap, but a separate elastomeric annular gasket seated in the annular groove.

5. The filter element of claim 4, wherein the annular seal support includes an inner annular extension and an outer terminating flange connected at an apex which form a groove bottom for the annular groove, the inner annular extension extending axially between the radial spacer wall and the apex and having a greater axial length than an axial depth of the annular seal member;

and wherein the annular seal projects axially from the apex past the outer terminating flange to provide a free compressible portion of resilient material that provides an annular axial seal.

6. The filter element of claim 5, wherein the annular seal support has a cam surface defined on a side opposite of the annular seal member, the cam surface providing means for radially locating and axially loading the seal member with the annular seal load member.

7. The filter element of claim 6, wherein the annular seal load member and the annular seal support are engaged in the closed position, wherein the cam surface guides the annular seal load member, such that the annular seal support is placed in the groove of the annular seal load member, wherein the terminal flange of the annular seal load member is arranged against the inner annular extension, locking the filter element in a position.

8. The filter element of claim 1, wherein the filter element is mounted in the housing vertically, wherein the annular seal member of the top end cap rests on the mounting panel, wherein the annular seal member is configured to support the filter element against the mounting panel.

9. The filter element of claim 1, wherein the filter element is mounted in the housing horizontally, wherein the top end cap is configured to seat against the mounting panel, supporting the filter element.

10. The filter element of claim 1, wherein the radial spacer wall is an linear extension extending radially outward from the annular disc portion such that the radial spacer wall and the annular disc portion provide a generally flat top surface, and the annular seal support projecting from the radial spacer wall such that the annular seal support is axially above and radially outward from the generally flat top surface.

11. The filter element of claim 10, wherein the annular disc portion, the radial spacer wall and the annular seal support are a single integral piece, wherein the top end of the tubular ring of filter media is embedded into the annular disc portion.

36. The filter element of claim 1, wherein the radial space wall extends radially between and connects the annular seal support with the annular disc portion.

12. A filter element, comprising:

a tubular ring of filter media;

a bottom end cap sealingly bonded to a bottom end of the tubular ring of filter media

a top end cap, the top end cap including;

an annular disc portion having a central opening, the annular disc portion sealingly bonded to a top end of the tubular ring of filter media;

an outer peripheral wall extending axially from the annular disc portion toward the bottom end cap;

an annular seal support; and

a radial spacer wall spacing the annular seal support radially outward from the outer peripheral wall to provide an annular receiving channel defined between the outer peripheral wall and the annular seal support; and

an annular seal member carried by the annular seal support.

13. The filter element of claim 12, wherein the radial spacer wall and the outer peripheral wall and the annular seal support are solid bodies free of apertures formed therethrough.

14. The filter element of claim 12, wherein the radial spacer wall comprises a generally flat annular disc segment.

15. The filter element of claim 12, wherein the annular seal support defines an annular groove facing in an opposite axial direction than the receiving channel, the annular seal member being not unitary with the top end cap, but separate elastomeric annular gasket seated in the annular groove.

16. The filter element of claim 15, wherein the annular seal support includes an inner annular extension and an outer terminating flange connected at an apex which form a groove bottom for the annular groove, the inner annular extension extending axially between the radial spacer wall and the apex and having a greater axial length than an axial depth of the annular seal member;

and wherein the annular seal projects axially from the apex past the outer terminating flange to provide a free compressible portion of resilient material that provides an annular axial seal.

17. The filter element of claim 16, wherein the filter element is in combination with a filter housing, the filter element being mounted in a filter housing vertically, wherein the annular seal member of the top end cap rests on a support structure of the filter housing;

wherein the annular seal member is configured to support the filter element.

18. The filter element of claim 16, wherein the filter element is in combination with a filter housing, the filter element being mounted in a filter housing horizontally, wherein the top end cap is configured to seat against a support structure of the filter housing, supporting the filter element.

19. The filter element of claim 16, wherein the receiving channel has a axial depth of at least ⅛

inches measured from an exterior surface of the disc portion to a bottom of the receiving channel.

20. The filter element of claim 12, wherein the seal support has a cam surface defined on a side opposite of the annular seal member, the cam surface providing means for radially locating and axially loading the seal member when employed in operation.

37. The filter element of claim 12, wherein the radial space wall extends radially between and connects the annular seal support with the annular disc portion.

21. An air cleaner assembly, comprising:

a particulate collection bin having a top panel defining an opening;

a hatch arranged over the opening;

a filter element installed in the opening, the filter element including a ring of filter media, a top end cap and a bottom end cap mounted to opposed ends of the filter media, the top end cap comprising;

an annular disc portion having a central opening;

an outer peripheral wall extending axially from the annular disc portion;

an annular seal support;

a radial spacer wall spacing the annular seal support radially outward from the outer peripheral wall to provide an annular receiving channel defined between the outer peripheral wall and the annular seal support; and

an annular seal member carried by the annular seal support;

wherein the annular seal member rests upon and seals against the top panel around the opening.

22. The air cleaner assembly of claim 21, wherein the hatch includes a top wall and a bottom wall in spaced relation and a sidewall extending therebetween and connecting the top and bottom walls, the bottom wall defining a second opening, a top end of the filter element projecting up through the second opening when the hatch is in the closed position.

23. The air cleaner assembly of claim 22, wherein the second opening of the hatch is larger than the opening in the top panel and concentrically arranged in the closed position.

24. The air cleaner assembly of claim 22, wherein the annular seal support defines an annular groove facing in an opposite axial direction than the receiving channel, the annular seal member being seated in the annular groove.

25. The air cleaner assembly of claim 24, wherein the annular seal support includes an inner annular extension and an outer terminating flange connected at an apex which form a groove bottom for the annular groove, the inner annular extension extending axially between the radial spacer wall and the apex and having a greater axial length than an axial depth of the annular seal member;

and wherein the annular seal projects axially from the apex past the outer terminating flange to provide a free compressible portion of resilient material that provides an annular axial seal.

26. The air cleaner assembly of claim 25, wherein the seal support has a cam surface defined on a side opposite of the annular seal member, the cam surface providing means for radially locating and axially loading the seal member when employed in operation.

27. The air cleaner assembly of claim 26, wherein the bottom wall of the hatch further includes an annular loading and positioning portion radially spaced from the side wall by a connecting portion, the annular loading and positioning portion comprising:

a second inner extension and a second terminal flange connected at a second apex, wherein a second groove is formed and the second apex defining a bottom of the second groove;

the second inner extension extending between the connecting portion and the second apex and the second terminal flange extending from the second apex and having a greater axial length than the second inner extension.

28. The air cleaner assembly of claim 27, wherein the annular loading and positioning portion and the annular seal support are engaged in the closed position;

wherein the cam surface guides the annular loading and positioning portion to place the second terminal flange into the annular receiving channel;

wherein the second terminal flange is arranged against the inner annular extension, locking the filter element in a position.

29. The air cleaner assembly of claim 28, wherein the top end cap is configured to support and mount the filter element in a suspended orientation, wherein the annular receiving channel defined by the outer peripheral wall, the annular disc segment and the inner annular extension is partially suspended between the filter media and the top panel of the particulate collection bin;

and the annular seal member in the annular seal support seats on the top panel proximate the opening.

30. The air cleaner assembly of claim 29, wherein the annular seal support is enclosed by the annular loading and positioning portion in the closed position, wherein the bottom of the second groove rests on the cam surface around the apex of the annular seal support, directing an axial force applied by the hatch to the annular seal member, thereby sealing and securing the filter element against the top panel.

31. The air cleaner assembly of claim 30, further comprising a latch mechanism between the hatch and the particulate collection bin in spaced relation to the hinge having a latched position compressing the hatch, thereby applying the axial force upon the annular seal member.

32. The air cleaner assembly of claim 30, wherein the filter element is supported by the top end cap on the particulate collection bin with only the top end cap and the annular seal member contacting the particulate collection bin when the filter element is mounted to the housing.

33. The air cleaner assembly of claim 21, further comprising a blower and a control panel for operating the blower.

34. The air cleaner assembly of claim 21, wherein the air cleaner assembly is portable wherein the particulate collection bin is mounted upon wheels.

35. The air cleaner assembly of claim 21, further including a hinge connecting the hatch to the particulate collection bin so that the hatch may pivot about the hinge between open and closed positions.

38. The air cleaner assembly of claim 21, wherein the radial space wall extends radially between and connects the annular seal support with the annular disc portion.