Pumps – Motor driven – Including means utilizing pump fluid for augmenting cooling,...
Patent
1992-12-14
1994-10-04
Bertsch, Richard A.
Pumps
Motor driven
Including means utilizing pump fluid for augmenting cooling,...
41742314, 122 17, 126312, F04B 1700
Patent
active
053520998
ABSTRACT:
An exhaust fan assembly for implementation with a hot water tank. The assembly includes a generally elliptical housing having a large end maintaining a fan and a smaller opposite end having an exhaust port. The fan is rotatable about a vertical axis and is positioned to be maintained over the exhaust vent of a hot water tank. The configuration of the housing as such is to be received between the inlet and outlet pipes of the hot water tank. A motor cup is press fit onto a lid which is formed as a portion of the housing on a top portion thereof, while a cover plate is press fit or snap fit into a circumferential flange about a bottom portion of the housing. The cover plate has an aperture therein in alignment with the fan to allow the fan to communicate with the flue pipe of the hot water tank. The cover plate and housing define a cavity within which the fan rotates, while further defining a path for movement of the exhaust gases and motor venting air to the exhaust port. The exhaust port and motor and fan axes are vertical and parallel to each other. A cylinder defined by the fan and a cylinder defined by the tubular exhaust port are preferrably parallel and non-intersecting.
REFERENCES:
patent: 2188741 (1940-01-01), Roberts
patent: 3542496 (1970-11-01), Bergeson et al.
patent: 4225292 (1980-09-01), Hallerback et al.
patent: 5205725 (1993-04-01), Pattison
Anstine William E.
Conner Michael P.
Wagner Gregory P.
Ametek Inc.
Basichas Alfred
Bertsch Richard A.
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