Condenser for vehicle and air conditioning system for vehicle

Abstract

A condenser may include a main radiating portion including a plurality that is formed by laminating a plurality of plates, a receiver drier portion integrally formed at one side end of the main radiating portion, a supercooling radiator that is integrally formed at a lower portion of the main radiating portion, and an accumulator portion integrally formed with the main radiating portion and the other end portion of the supercooling radiator. An air conditioning system may include an expansion valve, an evaporator, and an electrically driven compressor, a water cooler condenser, and a heat exchanger, wherein a liquid state refrigerant of a middle temperature and high pressure passing the water cooler condenser exchanges heat with a low temperature/pressure refrigerant passing the evaporator in the heat exchanger.

1 . A condenser for a vehicle disposed between a compressor and an expansion valve that circulates coolant supplied from a radiator to condense a refrigerant through heat exchange with the refrigerant supplied from the compressor in an air conditioning system including an expansion valve that expands a liquid refrigerant, an evaporator that evaporates the expanded refrigerant through heat exchange with air, and a compressor that receives a gaseous refrigerant from the evaporator to compress the gaseous refrigerant, the condenser comprising:
 a main radiating portion including a plurality of laminated plates, is connected to the radiator to circulate coolant, and circulates refrigerant supplied from the compressor to condense the refrigerant through heat exchange;   a receiver drier portion that receives the condensed refrigerant through the main radiating portion, separates gas and liquid of the refrigerant, eliminates water, and is integrally formed at one side end of the main radiating portion to exhaust only liquid refrigerant;   a supercooling radiator integrally formed at a lower portion of the main radiating portion between the main radiating portion and the receiver drier portion, circulates a low temperature and low pressure gas refrigerant supplied from the evaporator, and supercools the refrigerant that flows therein through the receiver drier portion through heat exchange with the low temperature and the low pressure gas refrigerant; and   an accumulator portion that receives the low temperature and low pressure refrigerant passing the supercooling radiator and is integrally formed with the main radiating portion and another end portion of the supercooling radiator to be connected to the supercooling radiator such that the gas refrigerant is exhausted to the compressor.   
     
     
         2 . The condenser for a vehicle of  claim 1 , wherein the main radiating portion guides the coolant and the refrigerant to flow in opposite directions such that the coolant and the refrigerant exchange heat efficiently. 
     
     
         3 . The condenser for a vehicle of  claim 1 , wherein the main radiating portion has a first connection passage through which the condensed refrigerant flows in the receiver drier portion. 
     
     
         4 . The condenser for a vehicle of  claim 1 , wherein the supercooling radiator has a second connection passage through which the refrigerant of which liquid and gas is separated and water is eliminated is supplied from the receiver drier portion. 
     
     
         5 . The condenser for a vehicle of  claim 4 , wherein the supercooling radiator has a refrigerant passage through which refrigerant that flows through the second connection passage from the receiver drier portion flows and a gas refrigerant passage through which low temperature/pressure supplied from the evaporator flows, wherein the condensed refrigerant of the refrigerant passage and the gas refrigerant of the gas refrigerant passage exchange heat from each other to be supercooled. 
     
     
         6 . The condenser for a vehicle of  claim 1 , wherein the supercooling radiator has a third connection passage through which the low temperature and low pressure gas refrigerant supplied from the evaporator is supplied to the accumulator portion. 
     
     
         7 . The condenser for a vehicle of  claim 1 , wherein the heat transfer prevention portion is formed between the main radiating portion and the supercooling radiator to prevent heat exchange of the refrigerant passing the main radiating portion with the supercooled refrigerant flowing from the supercooling radiator. 
     
     
         8 . The condenser for a vehicle of  claim 7 , wherein the heat transfer prevention portion has a plurality of brazing communication holes that are formed in a length direction on one side surface between the main radiating portion and the supercooling radiator, wherein N2 gas is charged through the brazing communication holes. 
     
     
         9 . The condenser for a vehicle of  claim 1 , wherein the main radiating portion, the receiver drier portion, the supercooling radiator, and the accumulator portion respectively have upper and lower covers to be disposed between the upper cover and the lower cover. 
     
     
         10 . The condenser for a vehicle of  claim 9 , wherein the upper cover has a coolant inlet and a coolant outlet through which coolant flows in or is exhausted corresponding to one side and another side of the main radiating portion, wherein a refrigerant inlet through which refrigerant is supplied from the compressor is formed at a side of the coolant outlet, and a gas refrigerant outlet connected to the compressor is formed at one side corresponding to the accumulator portion. 
     
     
         11 . The condenser for a vehicle of  claim 10 , wherein the lower cover has a refrigerant outlet formed at one end portion at an opposite side of the receiver drier portion corresponding to the refrigerant inlet to be connected to the expansion valve and a gas refrigerant inlet formed at one side of the supercooling radiator near the receiver drier portion, wherein the low temperature and low pressure gas refrigerant is supplied from the evaporator through the gas refrigerant inlet. 
     
     
         12 . The condenser for a vehicle of  claim 9 , wherein the receiver drier portion has a first mounting space formed therein and an insertion hole is formed in a lower cover corresponding to the first mounting space. 
     
     
         13 . The condenser for a vehicle of  claim 12 , wherein a drier is inserted into the first mounting space through the insertion hole. 
     
     
         14 . The condenser for a vehicle of  claim 13 , wherein a fixing cap is mounted in the insertion hole to prevent separation of the drier inserted into the first mounting space and to prevent the escape of the refrigerant in the receiver drier portion. 
     
     
         15 . The condenser for a vehicle of  claim 1 , wherein the accumulator portion has a second mounting space in which an accumulator is disposed. 
     
     
         16 . The condenser for a vehicle of  claim 1 , wherein the radiator is a lower temperature type to be connected to a reservoir tank, and a cooling fan is disposed at a rear side thereof. 
     
     
         17 . The condenser for a vehicle of  claim 1 , wherein the condenser includes a heat exchanger of which plurality of plates are laminated. 
     
     
         18 . An air conditioning system for a vehicle that includes an expansion valve that expands a fluid refrigerant, an evaporator that evaporates the expanded refrigerant through heat exchange with air, and an electrically driven compressor that receives gaseous refrigerant from the evaporator to compress the gaseous refrigerant, wherein they are connected through a refrigerant line, the system further comprising:
 a water cooler condenser that circulates a coolant supplied from a radiator through a cooling line and condenses the refrigerant through heat exchange with the refrigerant supplied from the electrically driven compressor; and   a heat exchanger disposed on the refrigerant line between the water cooler condenser and the evaporator, wherein a liquid state refrigerant of a middle temperature and a high pressure passing the water cooler condenser exchanges heat with a low temperature/pressure refrigerant passing the evaporator in the heat exchanger.   
     
     
         19 . The air conditioning system for a vehicle of  claim 18 , wherein the water cooler condenser includes:
 a radiation portion that circulates the refrigerant supplied from the electrically driven compressor and condenses the refrigerant through heat exchange with the coolant; and   a receiver drier portion that receives the condensed refrigerant through the radiating portion and is integrally formed with the radiating portion to be connected to the radiation portion such that gas and liquid of the refrigerant are separated and water thereof is eliminated.   
     
     
         20 . The air conditioning system for a vehicle of  claim 18 , wherein the heat exchanger has a double pipe structure, wherein a middle temperature and high pressure liquid state refrigerant and a low temperature/pressure refrigerant being gasified flow in opposite directions to exchange heat with each other. 
     
     
         21 . The air conditioning system for a vehicle of  claim 18 , wherein an accumulator is disposed on the refrigerant line between the electrically driven compressor and the heat exchanger so as to supply the electrically driven compressor with only gasified refrigerant among the mixed refrigerant of fluid and gas passing the heat exchanger. 
     
     
         22 . The air conditioning system for a vehicle of  claim 18 , wherein a cooling fan is disposed at a rear side of the radiator to blow air, and wherein the radiator is connected to the reservoir tank through a coolant line and coolant is circulated through the radiator by a water pump disposed on the coolant line.