FILTER POCKET ARRANGEMENT WITH INCREASED FILTER MEDIA AREA

• US 20120047855A1
• Filed: 08/31/2010
• Published: 03/01/2012
• Est. Priority Date: 08/31/2010
• Status: Active Grant

• Current Assignee: BHA Altair LLC (Parker-Hannifin Corporation)
• Original Assignee: General Electric Company
• Inventors: Eyers, William Keith Albert, Nikolin, Przemyslaw Krzysztof
• Granted Patent: US 8,690,980 B2
• Time in Patent Office: Days
• US Class Current: 55/378
• CPC Class Codes: B01D 2265/028 Snap, latch or clip connecting means
• CPC Class Codes: B01D 2279/60 for the intake of internal combustion engines or turbines
• CPC Class Codes: B01D 46/0005 Mounting of filtering elements within casings, housings or frames B01D46/2422 takes precedence
• CPC Class Codes: B01D 46/0013 Modules
• CPC Class Codes: B01D 46/023 Pockets filters, i.e. multiple bag filters mounted on a common frame
• CPC Class Codes: B01D 46/58 connected in parallel

Abstract

A filter pocket arrangement that provides increased filter media area is described. In one embodiment, each filter pocket includes a pocket mouth that attaches to a filter frame and a pocket body extending longitudinally away from the pocket mouth to a closed end. The closed end is folded back inward towards the pocket mouth to form a tuck fold that defines a first sub-filter pocket and a second sub-filter pocket at the pocket mouth. The first sub-filter pocket and the second sub-filter pocket each has a sub-pocket mouth that coincides with a portion of the pocket mouth, with sidewalls extending longitudinally therefrom to form an apex at the closed end of the filter pocket. The first sub-filter pocket is separated from the second sub-filter pocket by the tuck fold.

Claims

1. A filter assembly, comprising:

a filter frame;

a plurality of filter pockets disposed in the filter frame, each of the plurality of filter pockets comprising a pocket mouth that attaches to the filter frame and a pocket body extending longitudinally away from the pocket mouth to a closed end, wherein the closed end is folded back onto itself to form a tuck fold that defines a first sub-filter pocket and a second sub-filter pocket at the pocket mouth, the first sub-filter pocket and the second sub-filter pocket each having a sub-pocket mouth located about the pocket mouth with sidewalls extending longitudinally therefrom to form an apex at the closed end of the filter pocket, the first sub-filter pocket separated from the second sub-filter pocket by the tuck fold; and

a plurality of supporting members that support the plurality of filter pockets within the filter frame, wherein each of the plurality of supporting members is located about a tuck fold to support at least one of the plurality of filter pockets.

2. The filter assembly according to claim 1, wherein each of the plurality of supporting members extends vertically from a bottom portion of the filter frame to a top portion of the filter frame.

3. The filter assembly according to claim 1, wherein each of the plurality of supporting members is located in front of the tuck fold of at least one of the plurality of filter pockets.

4. The filter assembly according to claim 3, wherein each of the plurality of supporting members comprises at least one attachment region that is configured to receive at least one supporting member.

5. The filter assembly according to claim 1, wherein the filter frame is partitioned into a matrix having a plurality of rows and columns, each of the plurality of rows and columns configured to receive a predetermined number of the plurality of filter pockets.

6. The filter assembly according to claim 5, wherein each of the plurality of filter pockets located in a row and column of the matrix is separate and distinct from each other.

7. The filter assembly according to claim 5, wherein the plurality of supporting members comprises horizontally extending supporting members that extend across side portions of the filter frame and vertically extending supporting members that extend vertically from a bottom portion of the filter frame to a top portion of the filter frame.

8. The filter assembly according to claim 7, wherein each horizontally extending supporting member and each vertically extending supporting member maintains at least one filter pocket centered within a respective row and column of the matrix.

9. The filter assembly according to claim 1, wherein each of the plurality of filter pockets is disposed in the filter frame to form a prearranged shape.

10. A filter pocket arrangement, comprising:

a filter frame;

a plurality of filter pockets disposed in the filter frame, each of the plurality of filter pockets comprising a pocket mouth that attaches to the filter frame and a pocket body extending longitudinally away from the pocket mouth to a closed end, wherein the closed end is folded back inward towards the pocket mouth to form a tuck fold that defines a first sub-filter pocket and a second sub-filter pocket at the pocket mouth, the first sub-filter pocket and the second sub-filter pocket each having a sub-pocket mouth that coincides with a portion of the pocket mouth, with sidewalls extending longitudinally therefrom to form an apex at the closed end of the filter pocket, the first sub-filter pocket separated from the second sub-filter pocket by the tuck fold; and

a plurality of supporting members that support the plurality of filter pockets within the filter frame, wherein each of the plurality of supporting members is located at the tuck fold of at least one of the plurality of filter pockets.

11. The filter arrangement according to claim 10, wherein each of the plurality of supporting members extends vertically from a bottom portion of the filter frame to a top portion of the filter frame.

12. The filter arrangement according to claim 10, wherein the filter frame is partitioned into a matrix having a plurality of rows and columns, each of the plurality of rows and columns configured to receive a predetermined number of the plurality of filter pockets.

13. The filter arrangement according to claim 12, wherein each of the plurality of filter pockets located in a row and column of the matrix are separate and distinct from each other.

14. The filter arrangement according to claim 12, wherein the plurality of supporting members comprises horizontally extending supporting members that extend across side portions of the filter frame and vertically extending supporting members that extend vertically from a bottom portion of the filter frame to a top portion of the filter frame.

15. The filter arrangement according to claim 14, wherein each horizontally extending supporting member and each vertically extending supporting member maintains at least one filter pocket centered within a respective row and column of the matrix.