Heat pump booster

Claim 1

A HEAT PUMP COMPRISING A REVERSIBLE CLOSED REFRIGERANT CIRCUIT INCLUDING AN INDOOR HEAT EXCHANGER, AN OUTDOOR HEAT EXCHANGER, MEANS IN SAID CIRCUIT INCLUDING A COMPRESSOR HAVING A DISCHARGE LINE AND A SUCTION LINE AND REVERSING VALVE MEANS FOR REVERSIBLY CONNECTING SAID DISCHARGE AND SUCTION LINES TO SAID CIRCUIT IN EITHER EFFECTING FLOW OF REFRIGERANT THROUGH SAID CIRCUIT IN EITHER DIRECTION WHEREBY SAID PUMP MAY BE OPERATED ON A COOLING CYCLE WITH THE OUTDOOR HEAT EXCHANGER FUNCTIONING AS A CONDENSER AND RECEIVING HIGH PRESSURE REFRIGERANT FROM SAID COMPRESSOR OR ON A HEATING CYCLE WITH THE INDOOR HEAT EXCHANGER FUNCTIONING AS A CONDENSER AND RECEIVING HIGH PRESSURE REFRIGERANT FROM SAID COMPRESSOR, FLOW RESTRICTING MEANS IN SAID CIRCUIT FOR CONTROLLING THE FLOW OF REFRIGERANT FROM EITHER OF SAID HEAT EXCHANGERS TO THE OTHER AND FOR MAINTAINING A PRESSURE DIFFERENCE BETWEEN SAID HEAT EXCHANGERS, SAID FLOW RESTRICTING MEANS COMPRISING A COOLING CAPILLARY CONNECTED IN SERIES TO SAID INDOOR HEAT EXCHANGER AND A HEATING CAPILLARY CONNECTED IN SERIES TO SAID OUTDOOR HEAT EXCHANGER, A CONDUIT CONNECTING SAID CAPILLARIES IN SERIES, AND MEANS FOR-PASSING ONE OR THE OTHER OF SAID CAPILLARIES WHEREBY THE PRESSURE DIFFERENCE BETWEEN SAID HEAT EXCHANGERS IS PROVIDED BY SAID COOLING CAPILLARY DURING OPERATION OF SAID PUMP ON THE COOLING CYCLE AND BY SAID HEATING CAPILLARY DURING OPERATION OF SAID PUMP ON THE HEATING CYCLE SO THAT SAID CONDUIT CONDUCTS HIGH PRESSURE REFRIGERANT CAPACITY BOOSTER CYCLE OF OPERATION, AND A REFRIGERANT DURING EITHER MEANS FOR AUGMENTING REFRIGERANT SUPPLY AND REFRIGERANT PRESSURE CIRCULATING IN SAID CIRCUIT, SAID BOOSTER MEANS COMPRISING A RECEIVER HAVING A SUPPLY OF REFRIGERANT THEREIN, A SUPPLEMENTARY CIRCUIT CONNECTING SAID RECEIVER TO SAID CAPILLARY-CONNECTING CONDUIT AND TO THE COMPRESSOR SUCTION LINE PRESSURE RESPONSIVE VALVE MEANS IN SAID SUPPLEMENTARY CIRCUIT SELECTIVELY OPERABLE BETWEEN LIMITS TO SUPPLY REFRIGERANT TO SAID CLOSED REFRIGERANT CIRCUIT UPON REDUCTION OF REFRIGERANT PRESSURE IN SAID CLOSED CIRCUIT OR TO REMOVE REFRIGERANT FROM SAID CLOSED CIRCUIT UPON INCREASE OF REFRIGERANT PRESSURE.