Refrigerant charge variation mechanism

Details Refrigerant charge variation mechanism Refrigerant charge variation mechanism

1996-09-09

1998-07-28

Tapolcai, William E.

Refrigeration

Automatic control

Trapping and discharging refrigerant batches

623244, F25B 4100

Patent

active

057848920

ABSTRACT:
A heat pump system capable of heating and cooling an indoor space includes a refrigerant compressor having a discharge side and a suction side interconnected with respective indoor and outdoor heat exchanger coils via a reversing valve, and a condensed refrigerant line interconnecting the indoor and outdoor heat exchangers. Refrigerant charge can be variably added or taken away from the system based on operating conditions using a refrigerant reservoir having a flow regulated first valve connected to the condensed refrigerant line and a similar second valve connected to the suction side. A flow regulated third valve is used to bleed vapor from the reservoir to lower the pressure of refrigerant contained therein relative to the pressure in the liquid line.

REFERENCES:
patent: 3238737 (1966-03-01), Shrader et al.
patent: 3736763 (1973-06-01), Garland
patent: 5140827 (1992-08-01), Reedy
patent: 5477697 (1995-12-01), Wharton et al.

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