Heat pump system compressor fault detector

Details Heat pump system compressor fault detector Heat pump system compressor fault detector

1980-02-11

1981-11-24

Makay, Albert J.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62160, F25B 4900, F25B 1300

Patent

active

043016600

ABSTRACT:
A compressor fault detection and control system for a reverse cycle refrigeration system for detecting faulty compressor operation and for controlling the system in response to the detection of a fault by inhibiting the compressor and for providing a fault indication, the control system comprising a controller means receiving inputs indicative of the outdoor coil temperature, the temperature of the compressor discharge refrigerant, and an output indicative of a demand from an enclosed space temperature sensing means for heating or cooling of the enclosed space. The controller means also includes timing means and means for comparing the value of the compressor discharge temperature and the value of the outdoor coil temperature. Further, the controller means has an operative connection to control means for controlling the operation of the compressor and functioning, after the compressor has been operating for a preselected time interval, to inhibit any further operation of the compressor means unless the value of the compressor discharge temperature is greater than the value of the outdoor coil temperature plus a preselected constant value.

REFERENCES:
patent: 4236379 (1980-12-01), Mueller
patent: 4246763 (1981-01-01), Mueller et al.
patent: 4253130 (1981-02-01), Newell

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