Air conditioning apparatus

Details Air conditioning apparatus Air conditioning apparatus

1996-06-25

1997-12-30

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62222, F25B 4100, F25B 4104

Patent

active

057017530

ABSTRACT:
In the heating operation mode, the condensed temperature is calculated by the value of the discharged pressure sensor disposed at the discharge side of the compressor. Based on a difference between the condense temperature and a value of the outlet temperature sensor for detecting the refrigerant having passed through the heating indoor heat exchanger, the supercooling degree is calculated. Then, an opening degree of the expansion valve for heating is controlled so that the calculated supercooling degree is set to a target supercooling degree. Thus, since the condensed temperature is calculated by employing a high responsive pressure sensor, an error in the calculation of the condensed temperature can be reduced, thereby reducing an error in the calculation of the supercooling degree.

REFERENCES:
patent: 5115644 (1992-05-01), Alsenz
patent: 5157931 (1992-10-01), Alsenz
patent: 5174123 (1992-12-01), Erickson

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