Control arrangement for a refrigeration apparatus
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United States of America Patent
Stats
-
Jul 21, 1992
Grant Date -
N/A
app pub date -
Feb 25, 1991
filing date -
Apr 4, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A refrigeration system having compressor controls responsive to the heat load on the system. Each selected evaporator of the system has a thermostatic switch unit which includes an associated temperature sensor in proximity to the evaporator. The thermostatic switch unit has an operating range with ON and OFF threshold values and function to operate an electromagnetic valve which controls the refrigerant admitted to the evaporator. The heat load to which the compressor controls are responsive is derived from the accumulated ON and OFF times of the switch insert.
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