Air conditioning apparatus using supercritical refrigerant...

Details Air conditioning apparatus using supercritical refrigerant... Air conditioning apparatus using supercritical refrigerant...

2005-05-24

2005-05-24

Tapolcai, William E. (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S228500, C062S323400

Reexamination Certificate

active

06895769

ABSTRACT:
An air conditioning apparatus includes a refrigerating cycle supplying the supercritical refrigerant pressurized by the variable displacement compressor to the outdoor heat exchanger, the expansion valve and the indoor heat exchanger, in sequence and subsequently return the supercritical refrigerant to the variable displacement compressor. The apparatus further includes a displacement control unit that establishes a limit value derived from the engine speed and further controls a discharge volume of the compressor prior to the control in the opening degree of the expansion valve, on a basis of the so-established limit value.

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