Refrigerating apparatus

Details Refrigerating apparatus Refrigerating apparatus

1997-09-02

1999-08-10

Tanner, Harry B.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62129, F25B 4902

Patent

active

059340878

ABSTRACT:
An apparatus for detecting refrigerant leak in a refrigerating apparatus using refrigerant and a heat pump type refrigerating apparatus at low cost is presented. A refrigerant leak is judged from the differential temperature and the running time, by comprising a refrigeration system including a compressor, an evaporator, an expansion device, and a condenser, being sequentially coupled annularly by a conduit, a first temperature detector for detecting the air temperature of suction port of the evaporator, a second temperature detector for detecting the refrigerant temperature at the middle part of the evaporator, a differential temperature detector for calculating the differential temperature of the detectors, and a running time detector for storing the cumulative running time of the compressor.

REFERENCES:
patent: 5009076 (1991-04-01), Winslow
patent: 5150584 (1992-09-01), Tomasov et al.
patent: 5241833 (1993-09-01), Ohkoshi

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