Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1979-05-07
1982-01-19
Davis, Albert W.
Heat exchange
Movable heating or cooling surface
Rotary drum
165 28, 165 29, 62164, 219279, F25B 2900
Patent
active
043111904
ABSTRACT:
A self contained heating and cooling system is disclosed comprising a heat pump unit having a heat exchanger for heating and cooling air in a space, an auxiliary heating unit for heating air in the space, a support housing for the heat pump and auxiliary heating units, a cycling thermostat for governing operation of the heat pump and auxiliary heating units to enable establishment of a predetermined space air temperature, and a changeover thermostat. The changeover thermostat includes switch having first and second conditions wherein operation of the auxiliary heating means is enabled and disabled, respectively, a control switch operator for operating the control switch to its first condition in response to sensed atmospheric air temperatures below a predetermined temperature and a second control switch operator comprising a mechanism supported by the housing at a location accessible to a system user and manually actuable to effect operation of the control switch to its first condition regardless of sensed atmospheric air temperature levels.
REFERENCES:
patent: 3318372 (1967-05-01), Shell
patent: 3373800 (1968-03-01), Ferdelman
patent: 4114681 (1978-09-01), Denny
patent: 4228846 (1980-10-01), Smorol
Davis Albert W.
Focarino Margaret A.
Ranco Incorporated
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