Fluid mixing system

Claim 1

AN AIR MIXING SYSTEM COMPRISING, A PRESSURE SOURCE FOR SUPPLYING AIR UNDER PRESSURE, AS HEATER CONNECTED TO SAID PRESSURE SOURCE FOR INCREASING THE TEMPERATURE OF THE AIR AS IT FLOWS THROUGH THE HEATER, FIRST VALVE MEANS HAVING A SUPPLY PASSAGE CONNECTED TO SAID HEATER FOR GENERATING AN AIR STREAM, A MAIN DISCHARGE PASSAGE AND AN AUXILIARY DISCHARGE PASSAGE IN SAID VALVE MEANS FOR RECEIVING AIR FROM SAID SUPPLY PASSAGE, SAID VALVE MEANS PROVIDING AN ORIFICE ARRANGED TO FLOW AIR IN A DIRECTION GENERALLY TRANSVERSE TO SAID STREAM TO CAUSE SAID STREAM TO FLOW THROUGH SAID MAIN DISCHARGE PASSAGE UPON INCREASED FLOW THROUGH SAID ORIFICE, A REFRIGERATOR CONNECTED TO SAID PRESSURE SOURCE FOR DECREASING THE TEMPERATURE OF THE AIR AS IT FLOWS THROUGH THE REFRIGERATOR, SECOND VALVE MEANS HAVING A SECOND SUPPLY PASSAGE CONNECTED TO SAID REFRIGERATOR FOR GENERATING A SECOND AIR STREAM, A SECOND MAIN DISCHARGE PASSAGE AND A SECOND AUXILIARY DISCHARGE PASSAGE IN SAID SECOND VALVE MEANS FOR RECEIVING AIR FROM SAID SECOND SUPPLY PASSAGE, SAID SECOND VALVE MEANS PROVIDING AN ORIFICE ARRANGED TO FLOW AIR IN A DIRECTION GENERALLY TRANSVERSE TO SAID SECOND STREAM TO CAUSE SAID SECOND STREAM TO FLOW IN AN INCREASED PROPORTION THROUGH SAID SECOND MAIN DISCHARGE PASSAGE UPON DECREASED FLOW THROUGH SAID ORIFICE IN SAID SECOND VALVE MEANS, MEANS FOR COMBINING THE FLOW FROM SAID MAIN DISCHARGE PASSGES, A COMMON FLUID DUCT CONNECTED TO BOTH OF SAID ORIFICES AND TO SAID PRESSURE SOURCE FOR PROVIDING A FLOW OF FLUID THROUGH SAID ORIFICES, AND MEANS FOR CONTROLLING THE AMOUNT OF FLOW THROUGH SAID DUCT TO INCREASE THE PROPORTION OF FLOW OF FLUID FROM EITHER OF SAID SUPPLY PASSAGES THROUGH A MAIN DISCHARGE PASSAGE WHILE DECREASING THE FLOW FROM THE OTHER SUPPLY PASSAGE THROUGH THE OTHER MAIN DISCHARGE PASSAGE.