Refrigeration – Automatic control – Refrigeration producer
Patent
1982-04-26
1984-04-10
Yuen, Henry C.
Refrigeration
Automatic control
Refrigeration producer
165 29, F25B 4100, F25B 2900
Patent
active
044413319
ABSTRACT:
Present invention is to provide a heat pump type airconditioner wherein during warming, a refrigerant is successively circulated through a compressor--an indoor heat exchanger--an outdoor heater equipped with a refrigerant heating mechanism--the compressor and wherein a bypass circuit it disposed which includes a solenoid valve for the communication between the delivery side and suction side of the compressor; characterized in that a refrigerant temperature at an outlet of the refrigerant heating mechanism is sensed, that the solenoid valve is opened to bypass the refrigerant at the starting of the operation, that is, at the starting of the compressor, while the solenoid valve is closed when the refrigerant temperature has reached a predetermined temperature owing to heating and that the refrigerant heating mechanism is turned OFF after the refrigerant temperature has risen up to a predetermined temperature.
REFERENCES:
patent: 3212284 (1965-10-01), Henderson
patent: 3240028 (1966-03-01), Redfern et al.
patent: 3563304 (1969-01-01), McGrath
patent: 3777508 (1973-12-01), Imabayashi et al.
patent: 4065938 (1978-01-01), Jonsson
patent: 4137726 (1979-02-01), Watada
patent: 4179894 (1979-12-01), Hughes
Mitsubishi Denki & Kabushiki Kaisha
Tanner Harry
Yuen Henry C.
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