Air filter construction

• US 4,193,780 A
• Filed: 03/20/1978
• Issued: 03/18/1980
• Est. Priority Date: 03/20/1978
• Status: Expired due to Term

• Current Assignee: Industrial Air, Inc.
• Original Assignee: Industrial Air, Inc.
• Inventors: Hunter, A. Reese, Cotton, Worth Jr.
• Primary Examiner(s): Lacey, David L.
• Application Number:
  US05/890,573
• Time in Patent Office: 729 Days
• Field of Search: 55/373, 55/374, 55/378, 55/380, 55/497, 55/499, 55/500, 55/503, 55/DIG. 12, 55/509, 55/DIG. 26, 55/483, 55/484, 210/484, 210/485, 210/493 FR, 210/493 R
• US Class Current: 55/378
• CPC Class Codes: B01D 46/06 with means keeping the working surfaces flat
• CPC Class Codes: Y10S 55/12 Pocket type filter

Abstract

A plurality of separate V-shaped wire mesh members are arranged and connected in side-by-side relationship to provide a plurality of V-shaped cells across an air stream. A W-shaped retainer or connector formed of perforated sheet metal has outer, downstream facing trackways which receive side edges of the wire mesh members, and a central, upstream facing trackway which receives and retains the free edges of V-shaped filter media bags which are inserted into the V-shaped cells overlying the wire mesh. A stabilizer bar extends across and attaches to the exposed adjoining edges of the V-cells to support the cells in proper relation and retain the filter media in place.

Claims

1. An improved V-cell filter construction for emplacement within a walled conduit through which a contaminated air stream passes and comprising:

(a) a plurality of separate, V-shaped wire mesh members arranged in side-by-side relationship presenting a plurality of V-shaped cells extending across said walled conduit in the path of said air stream, each of said wire mesh members having lateral edges thereof positioned on the upstream side of said filter construction;

(b) a connecting means for engaging and holding in position the corresponding lateral edges of adjacent wire mesh members, said connecting means including a pair of spaced, outer trackways into which said lateral edges extend and means for retaining said lateral edges therein;

(c) a plurality of separate, fibrous, filter media members folded into a generally V-shape and of a size, shape, and number generally corresponding to the size, shape and number of said V-cells, one of said filter media members inserted into each of said cells;

(d) said connecting means further including a central trackway opening in the opposite direction from said outer trackways and of a width less than the combined thickness of two of said filter media members; and

(e) the lateral edges of each of said filter media members extending around the sides of said connecting means and into said central trackway and retained therein.

2. The filter construction according to claim 1 wherein said connector means comprises a relatively thin gauge metal sheet bent into a W-shaped configuration forming said outer trackways and said central trackway.

3. The filter construction according to claim 2 wherein said thin gauge metal sheet includes a multiplicity of perforations therein.

4. The filter construction according to claim 3 wherein said retaining means comprises a plurality of ring shaped hooks which pass through corresponding openings in the mesh and perforated metal sheet.

5. The filter construction according to claim 1 wherein said filter media members comprise bags having a rectangular front opening, a closed rear edge, and side walls converging from said front opening to said closed rear edge, said rear edge being attached to the apex of the V-shaped mesh member into which it is inserted, and the front, free edges of said side walls being inserted into corresponding ones of said central trackways.

6. The filter construction according to claim 1 and further including a stabilizer bar having a plurality of recesses extending into one edge thereof at spaced positions therealong, said recesses corresponding in number, size and spacing to the adjacent side edges of said V-shaped cells, whereby said stabilizer bar surrounds the edges of said wire mesh members around the filter media and said connecting means in supporting relation thereto.