Condenser for vehicle

Abstract

A condenser for vehicles may include a main heat-discharging unit formed with a plurality of first and second flow paths alternately, an overcooling heat-discharging unit disposed on a lower portion of the main heat-discharging unit, and formed with third and fourth flow paths, a receiver drier unit mounted on an upper portion of the overcooling heat-discharging unit to separate the refrigerant that flows through the main heat-discharging unit and the overcooling heat-discharging unit, to filter moisture and foreign materials therefrom and then to supply a filtered refrigerant to the overcooling heat-discharging unit

What is claimed is: 
     
         1 . A condenser for vehicles, comprising;
 a main heat-discharging unit formed with a plurality of first and second flow paths alternately, such that an inflowing coolant and a supplying refrigerant are heat-exchanged with each other while each flowing therein;   an overcooling heat-discharging unit disposed on a lower portion of the main heat-discharging unit, and formed with third and fourth flow paths alternately to overcool the refrigerant that has passed the main heat-discharging unit through a low-pressure gaseous refrigerant that is supplied separately;   a receiver drier unit disposed to be spaced from the main heat-discharging unit, and mounted on an upper portion of the overcooling heat-discharging unit to separate the refrigerant that flows through the main heat-discharging unit and the overcooling heat-discharging unit, to filter moisture and foreign materials therefrom and then to supply a filtered refrigerant to the overcooling heat-discharging unit;   an upper cover that interconnects the main heat-discharging unit and an upper portion of the receiver drier unit to form a coolant inlet and a coolant outlet, respectively, by which the coolant is flowed in and discharged to one side and another side corresponding to the main heat-discharging unit, and a refrigerant inlet; and   a lower cover having a refrigerant outlet connected to the overcooling heat-discharging unit and having a gaseous refrigerant inlet formed at a location spaced from the refrigerant outlet and a gaseous refrigerant outlet, formed with a mounting hole corresponding to the receiver drier unit, and mounted on a lower portion of the overcooling heat-discharging unit.   
     
     
         2 . The condenser of  claim 1 , wherein the receiver drier unit includes;
 a refrigerant storage unit having a plurality of stacked plates and formed with a refrigerant storage space therein;   an insertion member inserted into the mounting hole from a lower portion of the lower cover and having an upper end corresponding to the refrigerant storage space;   a fixed cap inserted into the insertion member, and integrally formed with a filter unit to remove the foreign materials therein, wherein a lower portion of the fixed cap is screwed to an inner circumferential surface of the insertion member; and   a drying agent provided in the refrigerant storage space from an upper portion of the fixed cap in the insertion member.   
     
     
         3 . The condenser of  claim 2 , wherein the overcooling heat-discharging unit is formed with a connection space that interconnects the mounting hole and the refrigerant storage space. 
     
     
         4 . The condenser of  claim 2 , wherein the insertion member is formed with a discharging hole by which a liquid refrigerant that has passed the filter unit of the fixed cap is discharged to the overcooling heat-discharging unit. 
     
     
         5 . The condenser of  claim 2 , wherein the insertion member is formed into a cylindrical shape which is opened at both ends thereof. 
     
     
         6 . The condenser of  claim 2 , wherein a sealing is interposed between an outer circumferential surface of the fixed cap and an inner circumferential surface of the insertion member. 
     
     
         7 . The condenser of  claim 1 , wherein the refrigerant supplied form a compressor flows in each of the first flow paths, and the coolant supplied from a radiator is circulated. 
     
     
         8 . The condenser of  claim 1 , wherein the overcooling heat-discharging unit is formed with a partition wall by which each of first and second flow paths and the each of third and fourth flow paths are partitioned, on an upper portion thereof closer to the main heat-discharging unit, and the upper portion from the partition wall is formed with a first connection flow path to be connected to the receiver drier unit. 
     
     
         9 . The condenser of  claim 8 , wherein the main heat-discharging unit is configured to condense a flowed refrigerant by heat-exchanging with the coolant, and discharge the refrigerant condensed by the receiver drier unit, through the first connection flow path. 
     
     
         10 . The condenser of  claim 8 , wherein the overcooling heat-discharging unit is configured such that a second connection flow path in which the liquid refrigerant that has passed the receiver drier unit flows is formed on a lower portion from the partition wall 
     
     
         11 . The condenser of  claim 10 , wherein the overcooling heat-discharging unit is configured such that the refrigerant that has passed through the main heat-discharging unit and the receiver drier unit flows in each of the third flow paths, and the refrigerant is overcooled by the low-pressure gaseous refrigerant, which is supplied from an evaporator and flows through the fourth flow paths. 
     
     
         12 . The condenser of  claim 10 , wherein the overcooling heat-discharging unit is interconnected with the main heat-discharging unit and the receiver drier unit through a connection plate mounted on an upper portion thereof. 
     
     
         13 . The condenser of  claim 12 , wherein the connection plate is configured such that the main heat-discharging unit and the receiver drier unit are spaced apart and fixed by a fixed protrusion, which is formed in a width direction of the connection plate between the main heat-discharging unit and the receiver drier unit.