Expansion valve control

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United States of America Patent

PATENT NO 10704814
APP PUB NO 20180066879A1
SERIAL NO

15556933

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for controlling a refrigeration system having a compressor, heat rejecting heat exchanger, expansion valve and heat absorbing heat exchanger circulating a refrigerant in series flow, the heat absorbing heat exchanger in thermal communication with working fluid, the method includes obtaining an expansion valve position set point; using a feedback control loop to generate a controlled expansion valve position; obtaining a rate of change of an operating parameter of the system; using the rate of change of the operating parameter to generate an adjustment; modifying the controlled expansion valve position using the adjustment; and controlling the expansion valve using the modified controlled expansion valve position.

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Patent Owner(s)

Patent OwnerAddress
CARRIER CORPORATION17900 BEELINE HIGHWAY JUPITER FL 33478

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
De, Tathagata Charlotte, US 11 20

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