Control for refrigeration compressors

Details Control for refrigeration compressors Control for refrigeration compressors

1977-05-23

1979-05-08

Wayner, William E.

Refrigeration

Automatic control

Time or program actuator

62175, 236 1E, 318 98, 417 7, F25B 500

Patent

active

041529022

ABSTRACT:
A device for controlling a single variable capacity compressor, or multiple variable capacity compressors in either parallel flow or series flow chilling systems, senses temperature and load conditions and uses feedback in conjunction with synchronously and asynchronously timed logic circuitry to automatically control loading, unloading and sequencing of the compressor or compressors in the system in selected increments, thereby yielding a significant reduction in energy consumption as well as increased precision in maintaining a desired chill temperature. Additional circuitry provides for remote manual control as well as safety shut-off and failure indication. Alternative embodiments using solid state logic, including a microprocessor embodiment, are also disclosed.

REFERENCES:
patent: 2803192 (1957-08-01), Crabtree
patent: 3229639 (1966-01-01), Highnutt et al.
patent: 3513662 (1970-05-01), Golber
patent: 3744932 (1973-07-01), Prevett
patent: 3780053 (1973-12-01), Norbeck et al.

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