Patent ID: 6978630
Filing Date: 2005-12-27
Classification: B60H,F25B

Abstract:
1. A refrigeration system comprising first and second refrigeration circuits, each refrigeration circuit including a refrigerant, a compressor, a condenser and an evaporator, a fluid conductor in each refrigeration circuit connecting the compressor and condenser in the refrigeration circuit for conveying the refrigerant from the compressor to the condenser, a fluid conductor in each refrigeration circuit connecting the condenser and the evaporator in the refrigeration circuit for conveying the refrigerant from the condenser to the evaporator, and a fluid conductor in each refrigeration circuit connecting the evaporator and the compressor in the refrigeration circuit for conveying the refrigerant from the evaporator to the compressor, a flow regulator located in the fluid conductor connecting the condenser and the evaporator in the first refrigeration circuit for establishing a pressure differential between the condenser and the evaporator in the first refrigeration circuit and regulating the flow of the refrigerant from the condenser to the evaporator in the first refrigeration circuit in response to variations in the heat load at the evaporator in the first refrigeration circuit, and a flow restricting device in the fluid conductor connecting the condenser and the evaporator in the second refrigeration circuit for establishing a pressure differential between the condenser and the evaporator in the second refrigeration circuit and passing the refrigerant in the second refrigeration circuit from the condenser to the evaporator in the second refrigeration circuit at a substantially constant rate of flow.