Internal combustion engine-heat pump system

Claim 1

A COMBINATION HEATING AND COOLING SYSTEM COMPRISING: AN ENCLOSURE FOR AIR TO BE CONDITIONED; AN INTERNAL COMBUSTION ENGINE HAVING A COMBUSTION CHAMBER AND AN OUTPUT SHAFT; A COMPRESSOR DRIVEN BY THE SHAFT; MEANS FOR INTRODUCING UNCONDITIONED AIR FROM THE ENCLOSED VOLUME TO THE COMPRESSOR; A PREHEAT EXCHANGER HAVING TWO AIR PASSAGES; MEANS FOR PASSING COMPRESSED AIR FROM THE COMPRESSOR THROUGH A FIRST PASSAGE OF THE PREHEAT EXCHANGER TO THE COMBUSTION CHAMBER; A TURBINE HAVING AN OUTPUT SHAFT; MEANS FOR PASSING EXHAUST FROM SAID ENGINE TO THE TURBINE TO DRIVE THE TURBINE; A FAN; MEANS CONNECTING THE FAN AND THE SHAFT; MEANS FOR CONNECTING THE FAN TO THE ENCLOSURE FOR AIR TO BE CONDITIONED SO THAT THE FAN DRAWS AIR FROM SUCH ENCLOSURE; A HEAT EXCHANGER HAVING A FIRST PASSAGE AND A SECOND PASSAGE; MEANS FOR PASSING THE AIR OUTPUT OF THE FAN THROUGH THE SECOND PASSAGE OF THE HEAT EXCHANGER; MEANS FOR PASSING AIR FROM THE SECOND PASSAGE OF THE HEAT EXCHANGER TO THE ENCLOSURE FOR AIR TO BE CONDITIONED; A REFRIGERANT PUMP DRIVEN BY THE SHAFT OF THE TURBINE; A FIRST REFRIGERANT COIL LOCATED IN THE FIRST PASSAGE OF THE HEAT EXCHANGER; A SECOND REFRIGERANT COIL LOCATED IN THE SECOND PASSAGE OF THE HEAT EXCHANGER; AN EXPANSION VALVE; MEANS CONNECTING EACH OF THE REFRIGERANT COILS TO OPPOSITE SIDES OF THE EXPANSION VALVE; A VALVE HAVING AN INPUT SIDE AND AN OUTPUT SIDE; MEANS CONNECTING BOTH THE EXHAUST OF THE TURBINE AND THE FAN TO THE INPUT SIDE OF THE VALVE AND THE SECOND PASSAGE OF THE PREHEAT EXCHANGER AND THE FIRST PASSAGE OF THE HEAT EXCHANGER TO THE OUTPUT SIDE OF THE VALVE; THE VALVE HAVING TWO OPERATIVE POSITIONS, A FIRST WHEREIN IT DIRECTS AIR FROM SAID FAN TO SAID FIRST PASSAGE OF SAID HEAT EXCHANGER AND EXHAUST FROM SAID TURBINE TO THE SECOND PASSAGE OF SAID PREHEAT EXCHANGER, AND A SECOND WHEREIN IT DIRECTS EXHAUST FROM SAID TURBINE TO SAID FIRST PASSAGE OF SAID HEAT EXCHANGER; MEANS FOR DIRECTING REFRIGERANT FLOW FROM SAID PUMP TO SAID FIRST REFRIGERANT COIL AT SUCH TIME AS SAID VALVE MEANS IS IN ITS FIRST POSITION AND TO SAID SECOND REFRIGERANT COIL AT SUCH TIME AS SAID FIRST VALVE MEANS IS IN ITS SECOND POSITION; AND CONTROL MEANS, INCLUDING A THERMOSTAT, OPERATIVE TO SWITCH SAID VALVE BETWEEN ITS FIRST AND SECOND POSITIONS.