Refrigeration system including condenser heat exchanger

Claim 1

IN COMBINATION WITH A REFRIGERATION SYSTEM HAVING A COMPRESSOR AND EVAPORATOR, A CONDENSER-HEAT EXCHANGER UNIT INCLUDING A CASING HAVING SPACED INNER AND OUTER SHELLS DEFINING AN INNER HEAT-EXCHANGE CHAMBER AND AN OUTER CONDENSER CHAMBER SURROUNDING AT LEAST A MAJOR PORTION OF SAID HEAT-EXCHANGE CHAMBER AND SEPARATED THEREFROM BY A HEAT CONDUCTIVE WALL, MEANS DEFINING A TORTUOUS HEAT EXCHANGE PASSAGE IMMERSED IN SAID INNER HEAT-EXCHANGE CHAMBER IN HEAT EXCHANGE RELATION WITH THE FLUID IN THE HEAT-EXCHANGE CHAMBER AND HAVING A HIGH PRESSURE REFRIGERANT INLET CONNECTED TO THE OUTLET OF SAID COMPRESSOR AND A HIGH PRESSURE REFRIGERANT OUTLET COMMUNICATING WITH SAID OUTER CONDENSER CHAMBER TO PASS REFRIGERANT THERETO, A LOW PRESSURE REFRIGERANT INLET COMMUNICATING WITH SAID OUTER CONDENSER CHAMBER TO PASS REFRIGERANT THERETO, A LOW PRESSURE REFRIGERANT INLET COMMUNICATING WITH SAID INNER HEAT-EXCHANGE CHAMBER AND CONNECTED TO THE OUTLET OF SAID EVAPORATOR TO PASS THE PARTIALLY SATURATED REFRIGERANT FROM THE EVAPORATOR TO THE HEAT-EXCHANGE CHAMBER, A LOW PRESSURE REFRIGERANT OUTLET LINE COMMUNICATING WITH SAID HEAT-EXCHANGE CHAMBER ADJACENT THE UPPER END THEREOF AND CONNECTED TO THE SUCTION SIDE OF THE COMPRESSOR FOR RETURNING THE SATURATED VAPOR TO THE COMPRESSOR, A CONDENSED REFRIGERANT OUTLET LINE COMMUNICATING WITH SAID CONDENSER CHAMBER ADJACENT THE LOWER END THEREOF AND CONNECTED TO THE INLET OF THE EVAPORATOR TO PASS CONDENSED REFRIGERANT THERETO, AND MEANS DEFINING A LIQUID COOLING JACKET DISPOSED IN HEAT EXCHANGE WITH SAID OUTER CONDENSER CHAMBER, SAID LIQUID COOLING JACKET HAVING A COOLING LIQUID INLET AND OUTLET FOR PASSING COOLING LIQUID THROUGH THE COOLING JACKET AND THEREBY COOL THE REFRIGERANT IN THE CONDENSER CHAMBER.