Air conditioning and refrigeration apparatus for motor vehicles

Claim 1

IN AIR CONDITIONING AND REFRIGERATION APPARATUS FOR MOTOR VEHICLES HAVING AN EVAPORATOR WITH A SINGLE TUBE WHICH HAS A REFRIGERANT INLET AND A REFRIGERANT OUTLET, THE INVENTION COMPRISING A VARIABLE SPEED ENGING OF SAID VEHICLE FOR OPERATING SAME, A VARIABLE SPEED COMPRESSOR DRIVEN BY SAID ENGINE OF SAID VEHICLE, A CONDENSER WITH A REFRIGERANT INLET AND A REFRIGERANT OUTLET AND A PIPE JOINING SAID COMPRESSOR TO SAID REFRIGERANT INLET OF SAID CONDENSER, AN ACCUMULATOR MEANS IN REFRIGERANT CONNECTION WITH LIQUID REFRIGERANT FROM SAID OUTLET OF SAID CONDENSER, AT LEAST TWO CAPILLARY TUBES IN REFRIGERANT CONNECTION WITH SAID ACCUMULATOR, EACH OF SAID TWO CAPILLARY TUBES EXTENDING TO AND SAID TWO CAPILLARY TUBES HAVING A COMMON REFRIGERANT CONNECTION WITH SAID INLET OF SAID SINGLE TUBE OF SAID EVAPORATOR TO EFFECT DELIVERY OF LIQUID REFRIGERANT FROM SAID TWO CAPILLARY TUBES DIRECTLY INTO SAID EVAPORATOR, A CONDUIT EXTENDING BETWEEN SAID REFRIGERANT OUTLET OF SAID EVAPORATOR AND SAID COMPRESSOR TO FORM A SUCTION CONNECTION FOR REFRIGERANT BETWEEN SID EVAPORATOR AND SAID COMPRESSOR, A PORTION OF THE LENGTH OF EACH OF SAID TWO CAPILLARY TUBES BEING DISPOSED INSIDE A PART OF THE LENGTH OF SAID CONDUIT TO FORM A HEAT EXCHANGER BETWEEN SAID TWO CAPILLARY TUBES AND SAID CONDUIT, SAID HEAT EXCHANGER BEING SO LOCATED THAT IT EXTENDS TO A POSITION ADJACENT SAID REFRIGERANT OUTLET OF SAID EVAPORATOR, SAID ACCUMULATOR MEANS HAVING A REFRIGERANT STORAGE CAPACITY SUCH THAT IT HOLDS AN AMOUNT OF LIQUID REFRIGERANT WHICH EVAPORATES SHORTLY AFTER SAID COMPRESSOR STOPS OPERATION AND IT PROVIDES A TEMPORARY STORAGE OF EXCESS REFRIGERANT DUE TO ACCELERATION OF THE COMPRESSOR.