Method and device for detecting the presence of liquid at the su

Details Method and device for detecting the presence of liquid at the su Method and device for detecting the presence of liquid at the su

1998-07-09

2000-06-13

Tanner, Harry B.

Refrigeration

Processes

Preventing slugging to compressor

62126, 62129, F25B 4902

Patent

active

060734531

ABSTRACT:
The pressure of the fluid at the outlet of the compressor is measured by a pressure sensor connected to a control module. When the fluid circulates in a heating loop not comprising a condenser, so as to heat a flow of air by heat exchange in the evaporator, and pressure oscillations indicating the presence of liquid are detected, the momentary opening of a discharge valve is triggered to send a portion of the fluid into the condenser of the air conditioning loop. The presence of liquid is thus detected and eliminated without having recourse to special sensors.

REFERENCES:
patent: 3913347 (1975-10-01), Stevens
patent: 4686834 (1987-08-01), Haley et al.
patent: 5230223 (1993-07-01), Hullar et al.
patent: 5560213 (1996-10-01), Wieszt
patent: 5586445 (1996-12-01), Bessler
patent: 5737930 (1998-04-01), Karl
patent: 5746062 (1998-05-01), Beaverson et al.

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