Refrigerant compressor protecting device

Details Refrigerant compressor protecting device Refrigerant compressor protecting device

1980-04-21

1981-05-05

Wayner, William E.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62129, 62228, 417 32, F25B 4900, F25B 100, F04B 4910

Patent

active

042650917

ABSTRACT:
A device for protecting a refrigerant compressor against troubles resulting from shortage of the refrigerant, including two temperatures sensing units so disposed as to monitor temperatures of compressor outer wall or of the refrigerant near inlet and outlet of the compressor. Outputs from the two temperature sensing units are applied to inputs of a judging unit which generates a signal in the event it judges a refrigerant amount is insufficient through examining the inputs against a specific relationship known between the inlet and outlet temperatures as measured while the refrigerant amount is held at a predetermined lower limit. The signal is then transferred to a working means which automatically turns off the compressor and/or takes other proper actions necessary for protecting the compressor.

REFERENCES:
patent: 3232519 (1966-02-01), Long
patent: 3278111 (1966-10-01), Parker
patent: 4059366 (1977-11-01), Gannaway
patent: 4167858 (1979-09-01), Kojima et al.
patent: 4220010 (1980-09-01), Mueller et al.

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