FILTER FRAME

• US 20150224434A1
• Filed: 12/05/2012
• Published: 08/13/2015
• Est. Priority Date: 09/12/2012
• Status: Active Grant

• Current Assignee: Camfil AB
• Original Assignee: Camfil AB
• Inventors: Hedlund, Kenny
• Granted Patent: US 10,369,507 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B01D 2201/0415 Details of supporting structures
• CPC Class Codes: B01D 2265/028 Snap, latch or clip connecting means
• CPC Class Codes: B01D 2265/06 Details of supporting structures for filtering material, e.g. cores
• CPC Class Codes: B01D 2271/022 Axial sealings
• CPC Class Codes: B01D 46/0002 Casings; Housings; Frame constructions
• CPC Class Codes: B01D 46/0005 Mounting of filtering elements within casings, housings or frames B01D46/2422 takes precedence
• CPC Class Codes: B01D 46/0047 for discharging the filtered gas
• CPC Class Codes: B01D 46/121 V-type arrangements
• CPC Class Codes: B01D 46/521 using folded, pleated material
• CPC Class Codes: B01D 46/56 with multiple filtering elements, characterised by their mutual disposition B01D46/12 takes precedence
• CPC Class Codes: B01D 46/62 connected in series
• CPC Class Codes: B01D 46/645 Protecting screens at filter inlet or outlet
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

The present invention relates to a filter frame for receiving a media pack, the filter frame comprising a front plate, and first and second gable plates arranged at opposite ends of the front plate. The front plate comprises a groove at each of the ends and a front edge portion of each gable plate is received in a respective one of the grooves. Each gable plate comprises a retainment member arranged at the front edge portion, which retainment member has been engaged with a complementary retainment member of the front plate. The invention also relates to a filter assembly and a method for assembling a filter frame.

Claims

1. A filter frame for receiving a media pack, the filter frame comprising a front plate, and first and second gable plates arranged at opposite ends of the front plate and primarily extending perpendicular to the front plate,

wherein the front plate comprises a groove at each of said ends wherein a front edge portion of each gable plate has been received in a respective one of the grooves, and

wherein each gable plate comprises a retainment member arranged at the front edge portion, which retainment member has been engaged with a complementary retainment member of the front plate.

2. The filter frame according to claim 1, wherein the retainment member comprises a snap-lock element.

3. The filter frame according to claim 2, wherein the snap-lock element comprises a resilient tongue extending perpendicular to a front edge of the gable plate, and having a shoulder;

wherein the complementary retainment member comprises a recess; and

wherein the shoulder has been received in the recess.

4. The filter frame according to claim 3, wherein the resilient tongue is arranged at a side edge of the gable plate, and wherein the recess is arranged at a rim of the front plate.

5. The filter frame according to claim 1, wherein the retainment member comprises a protrusion protruding from the front edge portion perpendicular to the primary extension of the gable plate;

wherein the complementary retainment member comprises a notch arranged at a rim of the front plate; and

wherein the protrusion has been received in the notch.

6. The filter frame according to claim 5, wherein the protrusion is wedge-shaped and the notch is V-shaped.

7. The filter frame according to claim 1, wherein each gable plate has at least one V-shaped plate portion extending between the front edge portion and an opposite rear edge portion of the gable plate, with the mouth of the V-shaped portion facing the front edge portion, said at least one V-shaped portion being defined by a channel arranged to receive a gable of the media pack.

8. The filter frame according to claim 1, further comprising a rear plate engaged with rear edge portions of the first and second gable plates.

9. The filter frame according to claim 8, wherein the rear plate is engaged to the gable plate by means of a snap lock element.

10. The filter frame according to claim 9, wherein the snap lock element comprises a resilient tongue provided on the gable plate and a recess provided at said rear plate and wherein the resilient tongue extend perpendicular to said rear edge of the gable plate, and having a shoulder;

and wherein the shoulder of the resilient tongue has been received in the recess.

11. The filter frame according to claim 9, wherein the snap lock element comprises a protrusion provided on the gable plate and extending perpendicular to said rear edge of the gable plate and a recess provided at said rear plate and wherein the recess is resilient such that the protrusion of the snap-lock element can be introduced into and received within the recess in locking position.

12. A filter assembly comprising a filter frame claim 1, and a media pack arranged in the filter frame.

13. A method of assembling a filter frame comprising:

providing a front plate, which comprises a groove at each one of two opposite ends thereof;

providing first and second gable plates, and mounting them at the front plate, including for each gable plate;

inserting a front edge portion of the gable plate into a respective groove, and forcing a retainment member provided at the front edge portion into engagement with a corresponding retainment member of the front plate.