Method and apparatus for preventing floodback in cooling apparat

Details Method and apparatus for preventing floodback in cooling apparat Method and apparatus for preventing floodback in cooling apparat

1987-04-03

1988-12-06

Wayner, William E.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62212, F25B 4100

Patent

active

047888261

ABSTRACT:
A method and apparatus for preventing flood back in refrigeration systems which include a compressor, expansion valve and evaporator coil, by sensing the temperature differential across the evaporator coil and deactivating the compressor when the differential exceeds in the negative direction a predetermined amount of superheat. A second embodiment uses the sensing to operate flooded systems at peak efficiency at or near 0 superheat. A third embodiment uses all electronic circuitry to operate the system.

REFERENCES:
patent: 3165681 (1965-01-01), Pinckaers
patent: 3577743 (1971-05-01), Long
patent: 3913347 (1975-10-01), Stevens
patent: 4116219 (1978-09-01), Nurnberg
patent: 4136822 (1979-01-01), Felter
patent: 4677830 (1987-07-01), Sumikawa et al.
Modern Dictionary of Electronics, Graf, 1972, p 139.

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