Refrigeration system with condenser temperature differential setpoint control

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United States of America Patent

PATENT NO 11125483
APP PUB NO 20170363337A1
SERIAL NO

15387300

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Abstract

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A refrigeration system for a temperature-controlled storage device includes a refrigeration circuit that circulates a refrigerant, a separate cooling circuit that circulates a coolant, and a controller. The refrigeration circuit includes a compressor, a condenser, an expansion device, and an evaporator. The cooling circuit includes a pump, a control valve, and a heat removing device in fluid communication with the condenser via the coolant. The controller is operatively coupled to the control valve and configured to identify a coolant temperature differential setpoint, monitor a temperature of the coolant provided to the condenser by the cooling circuit, calculate a coolant temperature differential based on the temperature of the coolant provided to the condenser, and operate the control valve to modulate a flow of the coolant through the condenser to drive the coolant temperature differential to the coolant temperature differential setpoint.

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Patent Owner(s)

Patent OwnerAddress
HILL PHOENIX INC1003 SIGMAN ROAD CONYERS GA 30013

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choueifati, Jules G Richmond, US 14 66
Rathje, Neil J South Chesterfield, US 7 25
Swofford, Timothy D Midlothian, US 14 64

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