Cooling system

Abstract

A cooling system including a compressor compressing a refrigerant and a condenser condensing the compressed refrigerant, includes: an evaporator section having a plurality of evaporators evaporating the refrigerant condensed in the condenser; a switching valve on a refrigerant line between the condenser and the evaporator, and selectively switching a refrigerant supply to the plurality of evaporators; and a refrigerant expansion part adjacent to at least one of the evaporators, allowing refrigerant introduced into the plurality of evaporators through the switching valve to expand. A refrigerant inlet of the refrigerant expansion part adjacent to any of the evaporators is connected to the switching valve, and a refrigerant outlet thereof is connected to an inlet of another evaporator.

1 . A cooling system including a compressor compressing a refrigerant and a condenser condensing the compressed refrigerant, comprising: 
 an evaporator section having a plurality of evaporators evaporating the refrigerant condensed in the condenser;    a switching valve on a refrigerant line between the condenser and the evaporator, and selectively switching a refrigerant supply to the plurality of evaporators; and    a refrigerant expansion part adjacent to at least one of the evaporators, allowing refrigerant introduced into the plurality of evaporators through the switching valve to expand,    wherein a refrigerant inlet of the refrigerant expansion part adjacent to any of the evaporators is connected to the switching valve, and a refrigerant outlet thereof is connected to an inlet of another evaporator.    
   
   
       2 . The cooling system according to  claim 1 , wherein each of the evaporators includes a refrigerant pipe and a plurality of fins disposed transversely to a lengthwise direction of the refrigerant pipe, and the refrigerant expansion part is disposed along each of the refrigerant pipes.  
   
   
       3 . The cooling system according to  claim 1 , wherein each of the evaporators includes a refrigerant pipe and a plurality of fins disposed transversely to a lengthwise direction of the refrigerant pipe, and the refrigerant expansion part is disposed in parallel with each of the refrigerant pipes.  
   
   
       4 . The cooling system according to  claim 1 , wherein the refrigerant expansion part is a capillary tube.  
   
   
       5 . The cooling system according to  claim 4 , wherein the switching valve is a solenoid valve.  
   
   
       6 . The cooling system according to  claim 2 , wherein the refrigerant expansion part is a capillary tube.  
   
   
       7 . The cooling system according to  claim 6 , wherein the switching valve is a solenoid valve.  
   
   
       8 . The cooling system according to  claim 3 , wherein the refrigerant expansion part is a capillary tube.  
   
   
       9 . The cooling system according to  claim 8 , wherein the switching valve is a solenoid valve.  
   
   
       10 . A cooling system including a compressor compressing a refrigerant and a condenser condensing the compressed refrigerant, comprising: 
 an evaporator having a first evaporating part and a second evaporating part evaporating the condensed refrigerant;    a switching valve on a refrigerant line between the condenser and the evaporator, and selectively supplying refrigerant to the first evaporating part and the second evaporating part;    a first refrigerant expansion part in at least a portion of the second evaporating part, and allowing the refrigerant introduced into the first evaporating part through the switching valve to expand; and    a second refrigerant expansion part provided in at least a portion of the first evaporating part, and allowing the refrigerant introduced into the second evaporating part through the switching valve to expand;    wherein a first circulation in which the condensed refrigerant is supplied to the first evaporating part through the first refrigerant expansion part, and a second circulation in which the refrigerant from the condenser is introduced into the second evaporating part through the second refrigerant expansion part, are selectively provided, and    wherein the second evaporating part is defrosted during the first circulation by heat from the first refrigerant expansion part, and the first evaporating part is defrosted during the second circulation by heat from the second refrigerant expansion part.    
   
   
       11 . The cooling system according to  claim 10 , wherein the first and second evaporators each include a refrigerant pipe and a plurality of fins arranged transversely to a lengthwise direction of the refrigerant pipe, and 
 the first and second refrigerant expansion parts are respectively provided along a surface of the refrigerant pipe of the first and second evaporators.    
   
   
       12 . The cooling system according to  claim 10 , wherein the first and second refrigerant expansion parts are capillary tubes.  
   
   
       13 . The cooling system according to  claim 12 , wherein the switching valve is a solenoid valve.  
   
   
       14 . The cooling system according to  claim 11 , wherein the first and second refrigerant expansion parts are a capillary tubes.  
   
   
       15 . The cooling system according to  claim 14 , wherein the switching valve is a solenoid valve.  
   
   
       16 . A cooling system, comprising: 
 a first loop including a first refrigerant expansion section allowing compressed refrigerant flowing therethrough to expand and a first evaporator downstream of the first refrigerant expansion section; and    a second loop including a second refrigerant expansion section allowing compressed refrigerant flowing therethrough to expand and a second evaporator downstream of the second refrigerant expansion section,    wherein when compressed refrigerant flows through the first loop, the first refrigerant expansion section is heated by the expansion of the refrigerant,    wherein when the compressed refrigerant flows through the second loop, the second refrigerant expansion section is heated by the expansion of the refrigerant, and    wherein the first refrigerant expansion section is proximate to the second evaporator and the second refrigerant expansion section is proximate to the first evaporator.    
   
   
       17 . The cooling system of  claim 16 , wherein the compressed refrigerant is selectively and alternatingly supplied to the first and second loops.  
   
   
       18 . A method of preventing frost on evaporators of a cooling system, comprising: 
 supplying compressed refrigerant to a first expansion section allowing the compressed refrigerant to expand and heat the first expansion section and then to a first evaporator downstream of the first expansion section; and    supplying compressed refrigerant to a second expansion section allowing the compressed refrigerant to expand and heat the second expansion section and then to a second evaporator downstream of the second expansion section,    wherein the first expansion section is proximate to the second evaporator and the second expansion section is proximate to the first evaporator.