Refrigeration – Automatic control – Time or program actuator
Patent
1986-01-27
1986-09-30
Wayner, William E.
Refrigeration
Automatic control
Time or program actuator
62175, 622386, G05D 2332
Patent
active
046140905
ABSTRACT:
An outdoor unit of an air conditioner of an engine heat pump type comprises an engine; first and second compressors driven by the engine and having substantially same capacity and heat exchangers for the compressors, said heat exchanger for the first compressor being adapted to utilize an atmosphere as a heat source in a heating operation, said heat exchanger for the second compressor being adapted to utilize a waste heat of the engine as a heat source in the heating operation, a rotation speed of the second compressor being set smaller than that of the first compressor in the heating operation, only the second compressor is adapted to operate in a defrosting operation for the heating operation while utilizing the waste heat of the engine as the heat source, said compressors being adapted to operate in a cooling operation and a rotation speed of the engine and a number of the compressors to be operated being controlled so as to control a cooling capacity in the cooling operation.
REFERENCES:
patent: 2266238 (1941-12-01), Newton
patent: 3648479 (1972-03-01), Richardson
patent: 4165036 (1979-08-01), Meckler
patent: 4481788 (1984-11-01), Yoshino
patent: 4517799 (1985-05-01), Hanaoka et al.
Awasaka Moriyoshi
Kaneko Teruji
Kawabe Toshihiko
Wayner William E.
Yanmar Diesel Engine Co. Ltd.
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