Cooling system for a cryochamber

Abstract

A cooling system for a cryochamber comprises compressors, heat exchangers and flow restrictions. Compressors are used to pressurize the working fluid, heat exchangers are used to release the heat to the ambient, absorb heat from the interior of the cryochamber to decrease the temperature inside the cryochamber, to cool the working fluid below the ambient temperature using source of cold or to recuperate heat of the cold working fluid stream. Flow restrictions are used to decrease the pressure of the working fluid which results in its temperature decrease. Cryochambers are used for whole-body cryotherapy and require cooling systems that are able to lower the air temperature inside the cryochamber to −90° F.

What is claimed is: 
     
         1 . A cooling system, comprising:
 a working fluid including at least two different refrigerants with different boiling points;   a compressor having an inlet configured to receive the working fluid and fluidically connected to an outlet of an inner heat exchanger and an outlet fluidically connected to an inlet of a heat exchanger;   the heat exchanger including an outlet fluidically connected to a first inlet of a recuperative heat exchanger;   the recuperative heat exchanger including a first outlet fluidically connected to an inlet of a flow constrictor and a second inlet fluidically connected to an outlet of the inner heat exchanger and a second outlet fluidically connected to the inlet of the compressor;   the flow restrictor including an outlet fluidically connected to an inlet of the inner heat exchanger; and   the interior heat exchanger including a surface configured to receive with surrounding air.   
     
     
         2 . The cooling system for a cryochamber according to  claim 1 , the heat exchanger in contact with an external source of cold. 
     
     
         3 . The cooling system of  claim 2 , wherein the external source of cold comprises a cold fluid. 
     
     
         4 . The cooling system of  claim 2 , wherein the working fluid comprising a first working fluid, the compressor comprises a first compressor, the heat exchanger comprises a first heat exchanger, the inlet of the first heat exchanger comprising a first inlet of the first heat exchanger, the outlet of the first heat exchanger comprising a first outlet of the first heat exchanger, the flow restrictor comprising a first flow restrictor, the external source of cold comprising a second cooling system comprising:
 a second working fluid including one or more refrigerants with different boiling points;   a second compressor having an inlet configured to receive the second working fluid and fluidically connected to a second outlet of the first heat exchanger and an outlet fluidically connected to an inlet of a second heat exchanger;   the second heat exchanger including an outlet fluidically connected to an inlet of a second flow restrictor; and   the second flow restrictor including an outlet fluidically connected to a second inlet of the first heat exchanger.   
     
     
         5 . The cooling system of  claim 2 , wherein the working fluid comprising a first working fluid, the compressor comprises a first compressor, the heat exchanger comprises a first heat exchanger, the flow restrictor comprising a first flow restrictor, the inlet of the first heat exchanger comprising a first inlet of the first heat exchanger, the outlet of the first heat exchanger comprising a first outlet of the first heat exchanger, the external source of cold comprising a second cooling system comprising:
 a second working fluid including one or more refrigerants with different boiling points;   a second compressor having an inlet configured to receive the second working fluid and fluidically connected to a second recuperative heat exchanger and an outlet fluidically connected to an inlet of a second heat exchanger;   the second heat exchanger including an outlet fluidically connected to a first inlet of a second recuperative heat exchanger;   the second recuperative heat exchanger including a first outlet fluidically connected to an inlet of a second flow constrictor and a second inlet fluidically connected to a second outlet of the first heat exchanger and a second outlet fluidically connected to the inlet of the second compressor; and   the second flow restrictor including an outlet fluidically connected to a second inlet of the first heat exchanger.   
     
     
         6 . The cooling system of  claim 1 , wherein fluidically connected comprises connected using conduits. 
     
     
         7 . The cooling system of  claim 1 , wherein the working fluid includes at least five different refrigerants with each having a different boiling point. 
     
     
         8 . A cryochamber, comprising:
 a cooling system, comprising:
 a working fluid including at least two different refrigerants with different boiling points; 
 a compressor having an inlet configured to receive the working fluid and fluidically connected to an outlet of an inner heat exchanger and an outlet fluidically connected to an inlet of a heat exchanger; 
 the heat exchanger including an outlet fluidically connected to a first inlet of a recuperative heat exchanger; 
 the recuperative heat exchanger including a first outlet fluidically connected to an inlet of a flow constrictor and a second inlet fluidically connected to an outlet of the inner heat exchanger and a second outlet fluidically connected to the inlet of the compressor; 
 the flow restrictor including an outlet fluidically connected to an inlet of the inner heat exchanger; and 
 the interior heat exchanger including a surface configured to receive with surrounding air. 
   
     
     
         9 . The cryochamber of  claim 8 , the heat exchanger in contact with an external source of cold. 
     
     
         10 . The cryochamber of  claim 9 , wherein the external source of cold comprises a cold fluid. 
     
     
         11 . The cryochamber of  claim 9 , wherein the working fluid comprising a first working fluid, the compressor comprises a first compressor, the heat exchanger comprises a first heat exchanger, the inlet of the first heat exchanger comprising a first inlet of the first heat exchanger, the outlet of the first heat exchanger comprising a first outlet of the first heat exchanger, the flow restrictor comprising a first flow restrictor, the external source of cold comprising a second cooling system comprising:
 a second working fluid including one or more refrigerants with different boiling points;   a second compressor having an inlet configured to receive the second working fluid and fluidically connected to a second outlet of the first heat exchanger and an outlet fluidically connected to an inlet of a second heat exchanger;   the second heat exchanger including an outlet fluidically connected to an inlet of a second flow restrictor; and   the second flow restrictor including an outlet fluidically connected to a second inlet of the first heat exchanger.   
     
     
         12 . The cryochamber of  claim 9 , wherein the working fluid comprising a first working fluid, the compressor comprises a first compressor, the heat exchanger comprises a first heat exchanger, the flow restrictor comprising a first flow restrictor, the inlet of the first heat exchanger comprising a first inlet of the first heat exchanger, the outlet of the first heat exchanger comprising a first outlet of the first heat exchanger, the external source of cold comprising a second cooling system comprising:
 a second working fluid including one or more refrigerants with different boiling points;   a second compressor having an inlet configured to receive the second working fluid and fluidically connected to a second recuperative heat exchanger and an outlet fluidically connected to an inlet of a second heat exchanger;   the second heat exchanger including an outlet fluidically connected to a first inlet of a second recuperative heat exchanger;   the second recuperative heat exchanger including a first outlet fluidically connected to an inlet of a second flow constrictor and a second inlet fluidically connected to a second outlet of the first heat exchanger and a second outlet fluidically connected to the inlet of the second compressor; and   the second flow restrictor including an outlet fluidically connected to a second inlet of the first heat exchanger.   
     
     
         13 . The cryochamber of  claim 8 , wherein fluidically connected comprises connected using conduits. 
     
     
         14 . The cryochamber of  claim 8 , wherein the working fluid includes at least five different refrigerants with each having a different boiling point. 
     
     
         15 . A method, comprising:
 receiving a working fluid, wherein the working fluid includes at least two different refrigerants with different boiling points;   compressing the received working fluid;   releasing heat from the received working fluid to generate a first cooled working fluid;   releasing additional heat from the first cooled working fluid to a cooled portion of the working fluid to generated a second cooled working fluid;   constricting flow of the second cooled working fluid to generated a constricted working fluid;   decreasing pressure of the constricted working fluid to generated a third cooled working fluid; and   releasing heat from a cryochamber using the third cooled working fluid to generated the cooled portion of the working fluid.   
     
     
         16 . The method of  claim 15 , the first cooled working fluid is generated using an external source of cold. 
     
     
         17 . The method of  claim 16 , wherein the external source of cold comprises a cold fluid. 
     
     
         18 . The method of  claim 16 , wherein the external source of cold comprises a second cooling system, the working fluid comprising a first working fluid, the method further comprising:
 compressing a second working fluid including one or more refrigerants with different boiling points;   releasing heat from the compressed second working fluid to generated a fourth cooled working fluid;   constricting flow of the fourth cooled working fluid to generated a constricted fourth cooled working fluid; and   releasing pressure of the constricted fourth cooled working fluid to generated a fifth cooled working fluid, wherein the first cooled working fluid is generated using the fifth cooled working fluid.   
     
     
         19 . The method of  claim 16 , wherein the external source of cold comprises a second cooling system, the working fluid comprising a first working fluid, the method further comprising:
 receiving a second working fluid, wherein the second working fluid including a plurality of different refrigerants with different boiling points;   compressing the received second working fluid;   releasing heat from the received second working fluid to generate a sixth cooled working fluid;   releasing additional heat from the sixth cooled working fluid to a seventh cooled working fluid to generated an eighth cooled working fluid;   constricting flow of the eighth cooled working fluid to generated a constricted eighth working fluid; and   decreasing pressure of the constricted eight working fluid to generated a ninth cooled working fluid, wherein the first cooled working fluid is generated using the ninth cooled working fluid.   
     
     
         20 . The method of  claim 15 , wherein the working fluid is in a closed system. 
     
     
         21 . The method of  claim 15 , wherein the working fluid includes at least five different refrigerants with each have a different boiling point.