Refrigerant cycle for vehicle air conditioner

Details Refrigerant cycle for vehicle air conditioner Refrigerant cycle for vehicle air conditioner

1999-02-25

2000-05-09

Bennett, Henry

Refrigeration

Automatic control

Refrigeration producer

62159, 62505, F25B 4100

Patent

active

060587288

ABSTRACT:
In a refrigerant cycle having a gas refrigerant bypass passage through which high-temperature gas refrigerant is introduced from a compressor into an evaporator while bypassing a condenser, a super-heating degree of gas refrigerant discharged from the compressor is determined according to signals from a pressure sensor and a temperature sensor disposed at a refrigerant discharging side of the compressor. According to the super-heating degree of gas refrigerant discharged from the compressor, refrigerant staying in the condenser is controlled so that refrigerant amount circulating in the refrigerant cycle is suitably controlled. Thus, heating capacity of the refrigerant cycle using the gas refrigerant bypass passage is improved, while the compressor is protected.

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