Refrigeration system for cold vapor blast

Claim 1

IN A REFRIGERATION SYSTEM FOR MAKING A LARGE VOLUME OF COLD FLUID AVAILABLE FOR THE CHILLING OF PARTS AND MEDIA BY DIRECT CONTACT OF THE PARTS AND MEDIA WITH THE REFRIGERATED FLUID COMPRISING THE COMBINATION OF A REFRIGERANT LIQUID CYCLE AND A REFRIGERATION FLUID CYCLE IN WHICH THE REFRIGERATION IS TRANSFERRED FROM THE LIQUID REFRIGERANT TO THE REFRIGERATION FLUID INDIRECTLY THROUGH A HEAT EXCHANGER, THE REFRIGERANT LIQUID CYCLE COMPRISING: (A) A REFRIGERANT MACHINE FOR MAKING AVAILABLE A REFRIGERANT LIQUID, (B) A RECEIVER FOR THE STORAGE OF REFRIGERANT LIQUID DELIVERED FROM THE REFRIGERANT MACHINE, (C) A HEAT EXCHANGER HAVING A REFRIGERATION COIL EXTENDING THERETHROUGH FROM AN INLET AT ONE END TO AN EXIT AT THE OTHER END FOR THE FLOW OF REFRIGERANT LIQUID THERETHROUGH, (D) MEANS COMMUNICATING THE MACHINE WITH THE RECEIVER FOR THE PASSAGE OF REFRIGERANT LIQUID FROM THE MACHINE TO THE RECEIVER, (E) MEANS COMMUNICATING THE RECEIVER WITH THE INLET END OF THE HEAT EXCHANGER COIL, (F) MEANS COMMUNICATING THE OUTLET END OF THE HEAT EXCHANGER COIL WITH THE MACHINE, (G) A PUMP MEANS FOR DISPLACEMENT OF REFRIGERANT LIQUID FROM THE RECEIVER TO THE INLET OF THE HEAT EXCHANGER SAID REFRIGERATION FLUID CYCLE COMPRISING: (1) A CHAMBER INTO WHICH THE REFRIGERATED FLUID IS INTRODUCED FOR PASSAGE INTO DIRECT CONTACT WITH THE PARTS AND MEDIA TO BE CHILLED, (2) MEANS COMMUNICATING ONE END OF THE HEAT EXCHANGER WITH THE CHAMBER FOR THE PASSAGE OF REFRIGERATED FLUID FROM THE HEAT EXCHANGER TO THE CHAMBER, (3) A PUMP MEANS HAVING AN INLET AND AN OUTLET FOR POSITIVE DISPLACEMENT OF FLUID FROM THE INLET TO THE OUTLET, (4) MEANS COMMUNICATING THE PUMP OUTLET WITH THE OTHER END OF THE HEAT EXCHANGER AND MEANS COMMUNICATING THE PUMP INLET WITH THE CHAMBER FOR POSITIVE DISPLACEMENT OF SPENT REFRIGERATION FLUID FROM THE CHAMBER TO THE HEAT EXCHANGER AND THROUGH THE HEAT EXCHANGER IN HEAT EXCHANGE RELATIONSHIP WITH THE HEAT EXCHANGE COILS IN THE HEAT EXCHANGER, AND (5) MEANS INTERPOSED BETWEN THE PUMP OUTLET AND THE HEAT EXCHANGER COMMUNICATING WITHE THE MEANS COMMUNICATING THE HEAT EXCHANGER OUTLET WITH THE CHAMBER FOR BYPASSING THE HEAT EXCHANGER WITH SOME OF THE FLUID CIRCULATED BY THE PUMP MEANS.