Refrigeration – Automatic control – Of external fluid or means
Patent
1986-09-15
1987-10-13
Tanner, Harry
Refrigeration
Automatic control
Of external fluid or means
62186, 62223, 62225, F25D 1700, F25B 4104
Patent
active
046989811
ABSTRACT:
An air conditioner has a refrigeration system comprising by a compressor, a reversing valve, an indoor heat exchanger, an expansion device and an outdoor heat exchanger which are connected in series to form a closed system, a bypass pipe equiped with a two-way valve, connected in parallel with the outdoor heat exchanger between the delivery side of the compressor and the refrigerant inlet side of the outdoor heat exchanger. An outdoor blower is provided for the outdoor heat exchanger. The two-way valve is adapted to permit hot refrigerant gas delivered by the compressor to be recirculated through the outdoor heat exchanger thereby effecting defrosting of the outdoor heat exchanger. The air conditioner further has an expansion control means for controlling the extent of expansion of the refrigerant in accordance with the temperature of the refrigerant in the refrigeration system, and an outdoor blower speed control means for maintaining a constant speed of the outdoor blower when the outdoor air temperature is below a predetermined set temperature.
REFERENCES:
patent: 3389576 (1968-06-01), Mauer
patent: 4117344 (1978-09-01), Boerstler et al.
patent: 4375753 (1983-03-01), Imasu et al.
Arakawa Shouji
Kaneko Tomomichi
Suzuki Shigeyasu
Hitachi , Ltd.
Tanner Harry
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