Heat pump apparatus and method for stable operation with inhibit

Details Heat pump apparatus and method for stable operation with inhibit Heat pump apparatus and method for stable operation with inhibit

1996-02-08

1998-03-31

Bennett, Henry A.

Refrigeration

Automatic control

Refrigeration producer

62224, 62503, F25B 4104

Patent

active

057325642

ABSTRACT:
A heat pump apparatus which includes: an accumulator and a sub-accumulator for additionally accommodating the refrigerant arranged between the accumulator and the compressor, in which at least the accumulator or the sub-accumulator is provided with a flow control valve for controlling the refrigerant flow upstream of the accumulator or the sub-accumulator in association with the liquid refrigerant level detected by the level sensor; a bypass line with a bypass valve for bypassing the expansion valve, for controlling the opening of the bypass; and, preferably, a level sensor for sensing the liquid refrigerant level therein; thereby inhibiting the occurrence of foaming of the refrigerant and preventing the refrigerant from entering the compressor, especially at the start-up of the compressor.

REFERENCES:
patent: 4646527 (1987-03-01), Taylor
patent: 4912937 (1990-04-01), Nakamura et al.
patent: 5605058 (1997-02-01), Kurachi et al.

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