Patent ID: 6543245
Filing Date: 2003-04-08
Classification: B60H,F25B,F25D

Abstract:
A multi-temperature refrigeration system comprising:a refrigeration unit having: a compressor, a condenser, and a reservoir; a plurality of evaporator units fluidly coupled to the compressor, each evaporator unit having an inlet valve, a cold plate housing a eutectic material, the eutectic material having a preferred temperature range, an expansion device, an evaporator adjacent the cold plate and operable to selectively cool the cold plate, and a temperature sensor thermally coupled to the cold plate for detecting cold plate temperature; and a microprocessor in communication with the temperature sensors and programmed to selectively energize or de-energize the compressor, and to selectively open at least one inlet valve while maintaining the remainder of the inlet valves in the closed position when the at least one temperature sensor records a temperature above the desired temperature range.