Refrigeration – Automatic control – Selective heating or cooling
Patent
1979-07-12
1980-11-11
Wayner, William E.
Refrigeration
Automatic control
Selective heating or cooling
62126, 62209, F25B 1300, F25B 4900
Patent
active
042325307
ABSTRACT:
A compressor start fault detection and control system for a reverse cycle refrigeration system for detecting faulty compressor startup 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 an input indicative of the temperature of the compressor discharge refrigerant and an output indicative of a demand from a building temperature sensing means for heating or cooling of the building. The controller means also includes (i) timing means, (ii) means for comparing the value of the compressor discharge temperature at the time of compressor start up and the value of the compressor discharge temperature after the compressor has been operating for a preselected time interval and (iii) means to inhibit any further operation of the compressor means unless the value of the later compressor discharge temperature is greater than the value of the initial or start up compressor disclosing temperature plus a preselected constant.
REFERENCES:
patent: 2826044 (1958-03-01), Reer
patent: 3170304 (1965-02-01), Hale
patent: 3702064 (1972-11-01), Ciolli
patent: 4005585 (1977-02-01), Matthews
patent: 4034570 (1977-07-01), Anderson et al.
patent: 4038061 (1977-07-01), Anderson et al.
Honeywell Inc.
Jensen Roger W.
Tanner Harry B.
Wayner William E.
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