Quench expansion valve refrigeration circuit

Details Quench expansion valve refrigeration circuit Quench expansion valve refrigeration circuit

1988-06-20

1991-01-22

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

62217, 62225, 62205, F25B 4104

Patent

active

049860844

ABSTRACT:
A refrigeration circuit is provided with a quench line connecting the liquid line and the suction line and containing a QEV. The QEV is controlled responsive to the superheat of the refrigerant supplied to the compressor. By injecting liquid refrigerant downstream of the suction modulation valve and the sensor for the TXV, the system can be operated at low capacity without overheating the compressor oil.

REFERENCES:
patent: 3095710 (1963-07-01), Clark
patent: 4226604 (1980-10-01), Weis
patent: 4258553 (1981-03-01), Kelly et al.
patent: 4550574 (1985-11-01), Hohman
patent: 4760707 (1988-08-01), Dennis et al.

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