FILTER ASSEMBLY AND FILTER ASSEMBLY MANUFACTURING METHOD

• US 20150246308A1
• Filed: 09/12/2012
• Published: 09/03/2015
• Est. Priority Date: 09/12/2012
• Status: Active Grant

• Current Assignee: Camfil AB
• Original Assignee: Camfil AB
• Inventors: Lans, Erik
• Granted Patent: US 9,694,307 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B01D 2271/00 Sealings for filters specially adapted for separating dispersed particles from gases or vapours
• CPC Class Codes: B01D 46/0001 Making filtering elements
• 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 46/121 V-type arrangements
• CPC Class Codes: B01D 46/521 using folded, pleated material

Abstract

The present invention relates to a filter assembly comprising at least one media pack arranged in a frame structure in which the at least one media packs is pleated and having opposing first and second open ends, and a corresponding method for manufacturing such a filter assembly for removing particles from an air stream. The method for manufacturing a filter assembly for removing particles from an air stream said comprises for each media pack sealing the first and second open ends in a first molding step, thereby providing a sealed first edge and a sealed second edge of each respective media pack, and subsequently arranging the at least one media pack in the frame structure and in a second molding step securing and sealing the sealed first edge and the sealed second edge, respectively, to at least one frame element of the frame structure.

Claims

1. A method for manufacturing a filter assembly for removing particles from an air stream comprising at least one media pack arranged in a frame structure, said media pack being pleated and having opposing first and second open ends, said method comprising:

for each media pack;

sealing said first and second open ends in a first molding step, thereby providing a sealed first edge and a sealed second edge of each respective media pack;

and subsequently arranging said at least one media pack in said frame structure and in a second molding step securing and sealing said sealed first edge and said sealed second edge, respectively, to at least one frame element of said frame structure.

2. A method according to claim 1, wherein said first molding step comprises:

for each open end of said media pack;

providing a pot adapted to receive at least said open end;

arranging said open end and a first molding compound layer in said pot; and

curing said first molding compound layer;

wherein said open end is embedded in said molding compound layer.

3. A method according to claim 1 or 2, further comprising arranging a stabilizing element onto said media pack.

4. A method according to claim 3, wherein said stabilizing element is arranged on said media pack prior to said step of curing said first molding layer, and wherein said stabilizing element is arranged to substantially cover a filter area of said media pack, such that a frame element of said stabilizing element extending along an open end of said media pack is sealed in said first molding step.

5. A method according to claim 1,

wherein said second molding step comprises:

providing a second molding compound layer in at least one frame element of said frame structure such that at least one sealed edge of said at least one media pack is embedded in said second molding compound layer; and

curing the second molding compound layer.

6. A method according to claim 5, further comprising providing said second molding compound layer in at least one further frame element of said frame structure such that at least one closed end of said at least one media pack is embedded in said second molding compound layer;

and

curing said second molding compound layer.

7. A filter assembly comprising:

at least one media pack which is pleated, and having opposing first and second open ends; and

a frame structure into which said at least one media pack is arranged;

wherein said first and second open ends of each media pack are sealed by means of a first sealing layer arranged to embed said open ends thereby forming sealed edges of said media pack, and

wherein said filter assembly comprises at least one second sealing layer arranged at at least one frame element of said frame structure, which second sealing layer is arranged to embed at least one sealed edge of said media pack, thereby securing and sealing said media pack to said filter element.

8. A filter assembly according to claim 7, wherein each sealed edge of said media pack further comprises a respective pot which is adapted to receive at least said open end of said media pack and which is secured to said media pack by means of said first sealing layer.

9. A filter assembly according to claim 8, wherein said second sealing layer is arranged at at least one further frame element of said frame structure to embed at least one closed end of said at least one media pack, thereby securing and sealing said media pack to said further frame element.

10. A filter assembly according to claim 7, further comprising a stabilizing element arranged onto each media pack.

11. A filter assembly according to claim 10, wherein frame elements of said stabilizing element extending along an open end of said media pack are sealed by said first sealing layer.

12. A filter assembly according to claim 7, further comprising at least one spacer element arranged at a sealed edge of said at least one media pack, or at a frame element surface facing a sealed edge of said at least one media pack.

13. A filter assembly according to claim 7, when comprising multiple media packs, wherein said multiple media packs are stacked in said frame structure in a V-orientation.

14. A filter assembly according to claim 7, further comprising guiding tracks arranged in at least one frame element, and being arranged to orient said media packs in predetermined directions.