Method for controlling an electronic expansion valve in...

Details Method for controlling an electronic expansion valve in... Method for controlling an electronic expansion valve in...

G - Physics

05

D

341/28

G05D 23/19 (2006.01) F25B 41/06 (2006.01) G05D 23/20 (2006.01)

Patent

CA 2030709

Title METHOD FOR CONTROLLING AN ELECTRONIC EXPANSION VALVE IN REFRIGERATION SYSTEM Abstract In a refrigeration system including an incremental expansion valve and an electronic controller for controlling the operation of the expansion valve, a method of controlling the expansion valve in response to a sensed condition of the refrigerant in the system. According co the method, the valve controller alters the control gain rate to provide compensation in the valve flow rate for changing refrigerant conditions in the system due co the staging of multiple condenser fans and flooding of the evaporator.

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