Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
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United States of America Patent
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May 28, 2002
Issued Date -
N/A
app pub date -
Jun 7, 2001
filing date -
Jun 7, 1995
priority date (Note) -
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Abstract
A refrigeration compressor control system includes a controller coupled to a load sensor to produce a variable duty cycle control signal that is a function of demand for cooling. The controller includes a module for establishing a fixed or variable cycle time for the variable duty cycle control signal. The controller is coupled to a compressor to cause the compressor to selectively alternate between first and second states in response to the variable duty cycle control signal, thereby adjusting the capacity of the compressor to the demand for cooling while the compressor is energized.
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