Importance

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Abstract

A refrigeration system for use with a plurality of temperature controlled cases is disclosed. The refrigeration system includes a cooling system having at least one compressor and a condenser for supplying liquid refrigerant to a cooling element associated with each case. Each cooling element receives liquid refrigerant through a liquid refrigerant supply line and returns vapor refrigerant through a suction line. The refrigeration system further includes a control module having a stored reference temperature (T ref) for each case, a temperature sensor disposed in each case for generating a signal representative of the actual temperature within the case (T act), and an expansion device provided at the liquid refrigerant supply line side of each case. The control module compares T ref with T act and moves the expansion devices between an open position and a closed position accordingly to obtain or maintain the desired temperature in each temperature controlled case.

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First Claim