초록 ▼

A high efficiency particulate air filter is disclosed which comprises a frame surrounding and sealably supporting the filter pack, with the frame composed of four separate side panels which are rigidly interconnected at their abutting ends by means of corner plates. The corner plates are in the form

A high efficiency particulate air filter is disclosed which comprises a frame surrounding and sealably supporting the filter pack, with the frame composed of four separate side panels which are rigidly interconnected at their abutting ends by means of corner plates. The corner plates are in the form of two flanges disposed at right angles to each other, and the flanges are closely received within slots formed on the outer face of the side panels. The corner plates preferably extend across the entire width of the side panels of the frame to impart substantial rigidity to the frame, and a sealing material is disposed in a recess which extends along the bight of the corner plates to provide a continuous seal along the abutting ends of the side panels.

대표청구항 ▼

In a frame adapted to surround and sealably support a generally rectangular filter pack or the like and which comprises four separate side panels which are interconnected in an end to end, rectangular arrangement, the improvement wherein the adjacent end edges of adjacent side panels are effectively

In a frame adapted to surround and sealably support a generally rectangular filter pack or the like and which comprises four separate side panels which are interconnected in an end to end, rectangular arrangement, the improvement wherein the adjacent end edges of adjacent side panels are effectively sealed along their interface and wherein each of said separate side panels of said frame includes opposite side edges extending in the lengthwise direction, opposite end edges, inner and outer faces, and at least one pair of channel forming means overlying the outer face of said panel and extending in the lengthwise direction and cooperating with said outer face of said panel to define a lengthwise extending slot between said pair of channel forming means, and with the slot of each side panel communicating in right angles relationship with the slots of the adjacent side panels, and at least one conrer plate interconnecting each of the adjacent end edges of adjacent side panels, with each of said corner plates comprising a pair of flanges disposed at right angles to each other in cross section and so as to define a bight at the intersection of the flanges, and a recess formed in such corner plate which extends along substantially the entire length of said bight and continuously along at least the medial portion thereof, with said recess having a sealing material therein, and with the flanges being closely received within respective ones of the slots of the associated side panels to interlock the corners and such that the sealing material serves to seal the adjacent end edges of the adjacent side panels.