Refrigerating cycle

Details Refrigerating cycle Refrigerating cycle

1997-04-16

1999-07-27

Wayner, William

Refrigeration

Automatic control

Trapping and discharging refrigerant batches

62184, 62502, F25B 4100, F25B 3904

Patent

active

059270870

ABSTRACT:
In a refrigerating cycle (air conditioner) using mixture refrigerant, a mixing ratio of the refrigerant in a refrigerant circuit is measured by a mixing ratio detector, and a controller receives the detection signal to open a control valve when the mixing ratio of a high boiling-point refrigerant component is low, whereby the high boiling-point refrigerant stocked in a liquid reservoir is returned to the refrigerant circuit. The high boiling-point refrigerant which is supplied from the liquid reservoir through the opening operation of the control valve is supplied from a low pressure side of a compressor into the refrigerant circuit to keep the mixing ratio of the refrigerant circulating in the refrigerant circuit to a predetermined value, thereby preventing abnormal increase of pressure of the refrigerant due to variation of the mixing ratio.

REFERENCES:
patent: 2277138 (1942-03-01), Newton
patent: 3668882 (1972-06-01), Sarsten et al.
patent: 5007247 (1991-04-01), Danig
patent: 5062275 (1991-11-01), Hirata et al.
patent: 5140827 (1992-08-01), Reedy
patent: 5186012 (1993-02-01), Czachorski et al.
patent: 5353604 (1994-10-01), Oguni et al.

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