Refrigerant cooling device

Abstract

A refrigeration system for an appliance includes a compression stage, a condenser stage, and an evaporation stage. The condenser stage includes a first condenser coupled to the compression stage and a pressure restriction device coupled between the first condenser and the evaporation stage.

1 . A refrigeration system for an appliance comprising:
 a compression stage;   a condenser stage; and   an evaporation stage coupled to the compression stage,   wherein the condenser stage comprises:
 a first condenser coupled to the compression stage; and 
 a pressure restriction device coupled between the first condenser and the evaporation stage. 
   
     
     
         2 . The refrigeration system of  claim 1 , wherein the pressure restriction device comprises a capillary tube. 
     
     
         3 . The refrigeration system of  claim 2 , wherein an inner diameter of the capillary tube is substantially 0.08 inches. 
     
     
         4 . The refrigeration system of  claim 1 , wherein the restriction device is configured to reduce the pressure of a refrigerant leaving the first condenser and entering the evaporator. 
     
     
         5 . The refrigeration system of  claim 1 , wherein the restriction device is configured to reduce a saturation temperature of refrigerant flowing from the first condenser to the evaporator from a condensing temperature to an ambient temperature level. 
     
     
         6 . The refrigeration system of  claim 1 , further comprising a final condenser coupled to the evaporation stage and wherein the pressure restriction device is coupled between the first condenser and the final condenser. 
     
     
         7 . The refrigeration system of  claim 6 , wherein an inner diameter of the capillary tube is substantially 0.035 inches. 
     
     
         8 . The refrigeration system of  claim 6 , wherein the final condenser is attached to a heat sink of the appliance. 
     
     
         9 . The refrigeration system of  claim 8 , wherein the heat sink comprises a portion of a cabinet for the appliance. 
     
     
         10 . The refrigeration system of  claim 1 , further comprising a capillary tube coupling the final condenser to the evaporation stage. 
     
     
         11 . The refrigeration system of  claim 1 , wherein the appliance is a refrigerator. 
     
     
         12 . The refrigeration system of  claim 1 , wherein the appliance is a household air conditioning unit. 
     
     
         13 . A refrigeration system for an appliance comprising:
 a compression stage;   a condenser stage; and   an evaporation stage;   wherein the condenser stage comprises:
 a first condenser coupled to the compression stage; 
   
       a final condenser coupled to the evaporation stage; and
 a pressure restriction device coupled between the first condenser and the final condenser. 
 
     
     
         14 . The refrigeration system of  claim 13 , wherein the pressure restriction device comprises a capillary tube. 
     
     
         15 . The refrigeration system of  claim 14 , wherein a length of the capillary tube is in the range of 0.5 to 1.5 inches. 
     
     
         16 . The refrigeration system of  claim 15 , wherein an inner diameter of the capillary tube is substantially 0.035 inches. 
     
     
         17 . The refrigeration system of  claim 16 , wherein the restriction device is configured to reduce the pressure of a refrigerant leaving the first condenser and entering the final condenser. 
     
     
         18 . The refrigeration system of  claim 13 , wherein the restriction device is configured to reduce a saturation temperature of refrigerant flowing from the first condenser to the final condenser from a condensing temperature to an ambient temperature level.