Stoves and furnaces – Stove hoods
Patent
1975-10-01
1978-04-25
Capossela, Ronald C.
Stoves and furnaces
Stove hoods
55DIG36, F24C 1520
Patent
active
040857360
ABSTRACT:
The grease hood has a small dimension in the front-to-rear direction, and encloses a relatively large vortex the maximum vertical dimension of which is about equal to or greater than the maximum horizontal dimension thereof. The maximum diametral dimension of the vortex in a direction generally perpendicular to the grease-filter means is about equal to or less than the maximum diametral vortex dimension in a direction generally parallel thereto. In one illustrated embodiment, the vortex is generally circular, whereas in a second illustrated embodiment the vortex is generally elliptical and vertically elongated.
The grease-filter means in one illustrated embodiment is not planar but instead is curved, the curvature cooperating with the curvature of the vortex liner to permit achievement of benefits including relatively small size of the grease hood. More specifically, the curved filter is associated with the vortex liner of generally circular shape in such one embodiment.
The preferred filter means are of novel construction for maximized filtering efficiency, and are adapted to be associated with electrostatic means to provide combination electrostatic and centrifugal-impingement filtering action. The cross-sectional shape of the filter means is such that the air and fumes first flow rapidly, then slow down and reverse direction, then speed up again, and then slow down and again reverse direction.
Both the front panel and the vortex liner are adapted to open in order to permit removal of the filters in an easy manner for cleaning or other purposes. Thus, the front panel opens, and the vortex liner is movable away from its normal operating position, in order that straight, simple access to the filters may be achieved.
Because the hood has the small dimension in the front-to-rear direction, it may be mounted at a very low elevation above only the rear portion of a cooking appliance disposed therebeneath. Furthermore, it may be introduced into the kitchen through a relatively small opening in the ceiling or roof.
REFERENCES:
patent: 926206 (1909-06-01), Morse
patent: 3664255 (1972-05-01), Keuchler
Capossela Ronald C.
Gausewitz Richard L.
Vent-Cair, Inc.
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