Gas separation – Deflector – Plural deflectors overlapped and spaced serially in gas flow
Patent
1989-02-06
1990-07-31
Hart, Charles
Gas separation
Deflector
Plural deflectors overlapped and spaced serially in gas flow
55446, 55464, 55465, 55DIG36, B01D 4500
Patent
active
049447823
ABSTRACT:
A disposable range hood filter and flame arrester having front and rear surfaces spaced closely apart from each other and connected to each other by flanges extending beteween them. Both front and rear surfaces comprise a plurality of spaced apart panels extending between the sides with each panel having a center offset panel portion lying inwardly of the body in relation to the remainder of the panel, so as to afford a depressed center section. A lower portion of each panel includes an aperture for permitting grease collection on the depressed center panel portion to drain into a bottom part of the filter body. The front and rear panels are laterally offset from each other so as to provide a labyrinthne path for air passing from the front to the rear of the filter unit. Preferably the units are made from a thin metal and are one inch or less in thickness. In the preferred form at least two ends or edges of the filter are defined in part by pockets which contain removable bars of like weight-imparting members to add mass to the filter and to stiffen it against bending. The filter/flame arrester unit are adapted to be discarded after use, or recycled, or cleaned at a remote location.
REFERENCES:
patent: 1400860 (1921-12-01), Brown
patent: 3530649 (1970-09-01), Porsch et al.
patent: 3566585 (1971-03-01), Voloshen et al.
patent: 3813856 (1974-06-01), Jensen
patent: 3870494 (1975-03-01), Doane
patent: 3910782 (1975-10-01), Struble et al.
patent: 3955949 (1976-05-01), Rohrer
"Kleen-Gard Grease Filters", Form No. GF 1897, Research Products Corp., Madison Wisconsin, 10-78, Copy in 55-DIG. 36.
Otzen Karl G.
Rajendran Narayanan
Hart Charles
S. C. Johnson & Son Inc.
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