Refrigeration – Automatic control – Selective heating or cooling
Patent
1988-03-08
1989-01-24
King, Lloyd L.
Refrigeration
Automatic control
Selective heating or cooling
623241, F25B 1300
Patent
active
047993634
ABSTRACT:
A room air conditioner has a by-pass connected between return piping and liquid-side piping. A solenoid valve which opens and closes the by-pass and a heat exchanger are installed in the by-pass. The heat exchanger performs heat exchange between liquid refrigerant in the by-pass and high-temperature gaseous refrigerant which is discharged from a compressor. During defrosting operation, a controller opens the solenoid valve to enable liquid refrigerant to flow through the by-pass. The liquid refrigerant in the by-pass is evaporated in the heat exchanger, and the mass flow rate of gaseous refrigerant through the air conditioner during defrosting operation is increased, thereby decreasing the time required for defrosting.
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King Lloyd L.
Mitsubishi Denki & Kabushiki Kaisha
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