Abstract:
Provided is a cold storage heat exchanger, and more particularly, a cold storage heat exchanger capable of increasing cooling comfort for a user and minimizing energy and time consumed upon performing a re-cooling by discharging cooled air stored in a cold storage tube upon operating an air conditioner of a vehicle even in the case in which an engine is stopped because the cold storage tube is provided between refrigerant tubes in an evaporator used in an air conditioner apparatus of the vehicle to thereby prevent a rapid increase in an interior temperature of the vehicle.

Description:
FIELD OF INVENTION 
       [0001]    The present invention relates to a cold storage heat exchanger, and more particularly, to a cold storage heat exchanger capable of increasing cooling comfort for a user and minimizing energy and time consumed upon performing a re-cooling by discharging cooled air stored in a cold storage tube upon operating an air conditioner of a vehicle even in the case in which an engine is stopped because the cold storage tube is provided between refrigerant tubes in an evaporator used in an air conditioner apparatus of the vehicle to thereby prevent a rapid increase in an interior temperature of the vehicle. 
       BACKGROUND OF THE INVENTION 
       [0002]    An air conditioner system, which is an apparatus absorbing interior heat of a vehicle and discharging it to the exterior of the vehicle between two environments having a temperature difference, generally includes an evaporator absorbing heat from a surrounding, a compressor compressing a refrigerant, a condenser discharging the heat to the surrounding, and an expansion valve expanding the refrigerant. 
         [0003]    In addition, in an air conditioner, an actual cooling operation occurs by the evaporator in which the refrigerant in a liquid state is evaporated by absorbing an amount of heat as much as evaporation heat from the surrounding. The refrigerant in a gas state introduced from the evaporator to the compressor is compressed to high temperature and high pressure by the compressor, heat of liquefaction is discharged to the surrounding during a process in which the compressed refrigerant in the gas state passes through the condenser and is liquefied, and the liquefied refrigerant becomes wet saturated steam of low temperature and low pressure by being again passed through the expansion valve and is then again introduced into the evaporator and evaporated, such that a cycle is performed. 
         [0004]    However, since the air conditioner apparatus of the vehicle is based on driving force of an engine, a cooling operation is not performed in the case in which the vehicle is idling or is parked for a short time. In addition, in the case in which a temperature of an exterior environment of the vehicle is very high, if the air conditioner apparatus is not operated even for a short time as described above, the interior temperature of the vehicle is very rapidly increased and when the vehicle is again driven, the operation of the air conditioner apparatus is resumed. As a result, a cooled wind does not rapidly rise, thereby significantly decreasing comfort for a user. 
         [0005]    In a recent vehicle industry, as an interest in an environment and energy is globally increased, a research into fuel efficiency improvement has been conducted and a research and development into lightness, miniaturization, and high functionalization has been continuously conducted to satisfy various consumer desires. 
         [0006]    Particularly, a research and development into a hybrid vehicle simultaneously using power of the engine and electricity energy has been increased due to the fuel efficiency improvement and emission regulation of exhaust, or the like, and the hybrid vehicle mainly adopts an idle stop and go system allowing the engine to be automatically stopped when the vehicle is stopped such as waiting for a signal and to be restarted by again manipulating a transmission. 
         [0007]    However, since the air conditioner apparatus of the hybrid vehicle is also operated by the engine, in the case in which the engine is stopped, the compressor is also stopped, such that the temperature of the evaporator is rapidly increased, thereby decreasing comfort for the user. 
         [0008]    In addition, since the refrigerant in the evaporator is easily evaporated even at room temperature, even in the case in which the refrigerant is evaporated for a short time in which the compressor is not operated and the engine is again operated to thereby operate the compressor and the evaporator, the evaporated refrigerant needs to be compressed and liquefied. Therefore, it takes a long time to supply the cooled wind to the interior and a total amount of energy consumption may be increased. 
         [0009]    In order to solve the problem as described above, a variety of forms of heat exchangers using a cold storage material storing cooled air have been suggested. 
         [0010]      FIGS. 1 and 2  are views showing a heat exchanger having a cold storage material stored therein according to the related art. 
         [0011]    The heat exchanger having the cold storage material stored therein according to the relate art as shown in  FIG. 1  includes a pair of tanks formed to be spaced apart from each other by a predetermined distance and in parallel with each other, where the tank includes a first tank  21  and a second tank  31 . In addition, the first tank  21  is coupled to a first header  20  and the second tank  31  is coupled to a second header  30 , such that independent channels are respectively formed. 
         [0012]    In addition, several refrigerant tubes  40  and cold storage tubes  50  having both ends fixed and forming a heat exchanging medium channel are coupled to the first header  20  and the second header  30 , respectively. 
         [0013]    In this case, as shown in  FIG. 2 , since the refrigerant tube  40  is configured in the cold storage tube  50 , channels of the heat exchanging medium and the cold storage material are respectively formed independently from each other. 
         [0014]    Therefore, since it is difficult to form independent spaces of the cold storage material and the heat exchanging medium, a structure thereof is complex and production efficiency is decreased. 
         [0015]    In addition, a cold storage heat exchanger of a stacked plate type according to the related art disclosed in Korean Patent Laid-Open Publication No. 10-2009-0108380 has tubes configured by three columns in which the refrigerant is introduced into two tubes of both sides and the cold storage material is introduced into a middle tube. However, since it is difficult to secure an internal space in which the cold storage material is present and an amount of introduced cold storage material is small, it is difficult to obtain adequate cold storage performance. 
         [0016]    In addition, in the heat exchanger having the cold storage material stored therein according to the related art, since there is high probability of the cold storage material interrupting a flow of the heat exchanging medium or the cold storage material and the heat exchanging medium being mixed with each other, other problems may be caused. 
       SUMMARY OF THE INVENTION 
       [0017]    An object of the present invention is to provide a cold storage heat exchanger capable of having a low probability of a cold storage material interrupting a flow of a heat exchanging medium or the cold storage material and the heat exchanging medium being mixed with each other since refrigerant tubes of two columns and a cold storage tube configured therebetween are provided to secure independent spaces of the cold storage material and the heat exchanging medium and improving production efficiency due to a simple structure. 
         [0018]    In one general aspect, a cold storage heat exchanger, includes: a pair of header tanks  100  which are partitioned by partition walls and formed in three columns so that refrigerant header tanks  110  having a refrigerant flowing therein are formed in a first column and a third column and a cold storage header tank  120  having a cold storage material stored therein is formed in a second column between the first column and the third column, and are spaced apart from each other by a predetermined distance and formed to be in parallel with each other; an inlet manifold  160  and an outlet manifold  170  formed at both ends of the header tank  100  and being in communication with the refrigerant header tanks  110  of the first column and the third column, the inlet manifold  160  being introduced with a refrigerant and the outlet manifold  170  discharging the refrigerant; a plurality of refrigerant tubes  200  having both ends connected to the refrigerant header tanks  110  of the first column and the third column formed to be spaced apart from each other by the predetermined distance and having the refrigerant flowing therein; and a plurality of cold storage tubes  300  having both ends connected to the cold storage header tank  120  of the second column formed to be spaced apart from a pair of cold storage header tanks  120  by the predetermined distance and having the cold storage material stored therein. 
         [0019]    The refrigerant tubes  200  and the cold storage tube  300  are formed in an integral tube  500 , such that the cold storage tube  300  may be formed between the refrigerant tubes  200  of the two columns, and the integral tube  500  may have cut grooves  510  formed in both ends thereof so as to be inserted into communication holes  140  formed in the header tank  100 . 
         [0020]    The cold storage heat exchanger may further include a pump  600  and a reservoir  700  connected to the cold storage header tank  120 , wherein the cold storage material may be circulated along the cold storage header tank  120  and the cold storage tube  300 . 
         [0021]    In another general aspect, a cold storage heat exchanger includes: a pair of header tanks  100  having refrigerant header tanks  110  formed in two columns to allow a refrigerant to flow and formed to be spaced apart from each other by a predetermined distance and be in parallel with each other; an inlet manifold  160  and an outlet manifold  170  formed at both ends of the header tank  100  and being in communication with the refrigerant header tanks  110  of the two columns, the inlet manifold  160  being introduced with a refrigerant and the outlet manifold  170  discharging the refrigerant; a plurality of refrigerant tubes  200  having both ends connected to the refrigerant header tanks  110  of the two columns formed to be spaced apart from each other by the predetermined distance and having the refrigerant flowing therein; and a cold storage tube  300  provided between the refrigerant header tanks  110  of the two columns to have a cold storage material stored therein. 
         [0022]    The refrigerant header tanks  110  of the two columns may be formed to be spaced apart from each other by the predetermined distance. 
         [0023]    The refrigerant header tanks  110  of the two columns formed on an upper portion among the pair of header tanks  100  are formed to be larger than the refrigerant header tanks  110  of the two columns formed on a lower portion, such that the refrigerant header tanks  110  of the two columns formed on the lower portion may be formed to be spaced apart from each other by the predetermined distance. 
         [0024]    The cold storage heat exchanger may further include a cold storage material storing vessel  310  coupled to lower sides of the refrigerant header tank  110  of the two columns formed on the lower portion and connected to a lower end of the cold storage tube  300 , wherein the cold storage material storing vessel  310  may be provided with a condensate water discharging hole  311  vertically penetrating through thereof. 
         [0025]    An opposing header tank  100  in which the manifolds  160  and  170  are formed may have an integral end cap  150  coupled to an end portion thereof. 
         [0026]    The manifolds  160  and  170  or the end cap  150  may be provided with a cold storage tube supporter  320  coupled to the cold storage tube  300 . 
         [0027]    The cold storage heat exchanger according to the present invention may have a low probability of a cold storage material interrupting a flow of a heat exchanging medium or the cold storage material and the heat exchanging medium being mixed with each other since refrigerant tubes of two columns and a cold storage tube configured therebetween are provided to secure independent spaces of the cold storage material and the heat exchanging medium and may improve production efficiency due to a simple structure. 
         [0028]    In addition, since there is no refrigerant communication passage structure connecting the refrigerant tubes of two columns, the refrigerant channel of the heat exchanger may be easily configured. 
         [0029]    In addition, since the refrigerant channel is configured by the two columns to decrease an amount of flow of the refrigerant passing through the header tank of each column, a pressure drop of the refrigerant may be decreased. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0030]      FIG. 1  is a partial perspective view showing a cold storage heat exchanger according to the related art. 
           [0031]      FIG. 2  is a cross-sectional view taken along a direction A-A′ of  FIG. 1 . 
           [0032]      FIG. 3  is an exploded perspective view showing a cold storage heat exchanger according to the present invention. 
           [0033]      FIG. 4  is an assembly perspective view of  FIG. 3 . 
           [0034]      FIG. 5  is a perspective view showing another example of inlet and outlet manifolds according to the present invention. 
           [0035]      FIG. 6  is a cross-sectional view of a refrigerant tube and a cold storage tube of  FIG. 5 . 
           [0036]      FIGS. 7 and 8  are cross-sectional views showing an integral tube and a header tank according to the present invention. 
           [0037]      FIG. 9  is a configuration view showing a cycle structure of a cold storage material according to the present invention. 
           [0038]      FIGS. 10 to 14  are perspective views and cross-sectional views showing another example according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0039]    Hereinafter, a cold storage heat exchanger according to the present invention having a configuration as described above will be described in detail with reference to the accompanying drawings. 
         [0040]      FIGS. 3 and 4  are an exploded perspective view and an assembly perspective view showing the cold storage heat exchanger according to the present invention. 
         [0041]    As shown, the cold storage heat exchanger according to the present invention is configured to include a pair of header tanks  100  which are partitioned by partition walls and formed in three columns so that refrigerant header tanks  110  having a refrigerant flowing therein are formed in a first column and a third column and a cold storage header tank  120  having a cold storage material stored therein is formed in a second column between the first column and the third column, and are spaced apart from each other by a predetermined distance and formed to be in parallel with each other; an inlet manifold  160  and an outlet manifold  170  formed at both ends of the header tank  100  and being in communication with the refrigerant header tanks  110  of the first column and the third column, the inlet manifold  160  being introduced with a refrigerant and the outlet manifold  170  discharging the refrigerant; a plurality of refrigerant tubes  200  having both ends connected to the refrigerant header tanks  110  of the first column and the third column formed to be spaced apart from each other by the predetermined distance and having the refrigerant flowing therein; and a plurality of cold storage tubes  300  having both ends connected to the cold storage header tank  120  of the second column formed to be spaced apart from a pair of cold storage header tanks  120  by the predetermined distance and having the cold storage material stored therein. 
         [0042]    First, the pair of header tanks  100  are formed to be spaced apart from each other by the predetermined distance and to be in parallel with each other in a vertical direction. In this case, the respective header tanks  100  have the refrigerant header tanks  110  formed in the two columns along a length direction thereof and the cold storage header tank  120  formed between the refrigerant header tanks  110  of the two columns. That is, the header tank  100  are formed in the three columns and have the cold storage header tank  120  formed in the middle column so as to enable the cold storage material to be stored or flown. 
         [0043]    As such, the header tanks  100  are formed in the three columns to be disposed at upper and lower portions, respectively, and have the refrigerant tubes  200  and the cold storage tube  300  coupled thereto. In this case, the refrigerant tubes  200  and the cold storage tube  300  are connected to each other so that both ends thereof are connected between the pair of header tanks  100  disposed on an upper portion and a lower portion, where the refrigerant tubes  200  are configured so that both ends thereof are connected to the refrigerant header tanks  110  of the two columns of the header tanks  100  to enable a heat exchanging medium to be flown and the cold storage tube  300  is configured so that both ends thereof are connected to the cold storage header tank  120  to enable the cold storage material to be flown and stored. 
         [0044]    That is, as shown in  FIG. 6 , the refrigerant tubes  200  are formed in the two columns at both sides and the cold storage tube  300  is formed in one column at the middle, thereby configuring the tubes of the three columns. 
         [0045]    In addition, fins  400  are coupled to the refrigerant tubes  200  and the cold storage tube  300  to be in contact with each other and are formed in a plate having a zig-zag form and a corrugated form, thereby serving to improve heat exchanging efficiency with the heat exchanging medium or the cold storage material passing through interiors of the tubes  200  and  300 . 
         [0046]    In summary, the cold storage heat exchanger  1000  according to the present invention has a structure in which a cold storage unit of one layer is configured between heat exchangers of two layers. 
         [0047]    Here, baffles  130  partitioning an internal space of the refrigerant header tank  110  may be formed in the refrigerant header tank  110  of the header tank  100  so as to control a flow of the heat exchanging medium. In this case, the baffles  130  may be formed in the refrigerant header tank  110  and a plurality of baffles  130  may be formed at various positions, thereby making it possible to control the flow of the refrigerant. 
         [0048]    In addition, the header tank  100  may have the inlet manifold  160  introduced with the heat exchanging medium and the outlet manifold  170  discharging the heat exchanging medium, which are coupled thereto, and the inlet manifold  160  and the outlet manifold  170  are connected to both ends of the refrigerant header tanks  110  of the two columns of the header tanks  100 , thereby making it possible to form two channels in which the heat exchanging medium may flow. 
         [0049]    In addition, a cold storage material injecting part  151  is formed in one side of the cold storage header tank  120 , which may be configured to inject the cold storage material into the cold storage header tanks  120  and the cold storage tube  300 . In this case, the cold storage injecting part  151  may be in communication with the cold storage header tank  120  by forming an opening in an end cap  150  coupled to the ends of the header tanks  110  and  120  and may prevent a leakage of the cold storage material by blocking the cold storage material injecting part  151  by a plug, a blocking bolt, or the like after the cold storage material is injected. 
         [0050]    As such, since the cold storage heat exchanger according to the present invention has two channels of the heat exchanging medium formed therein and the cold storage header tank  120  and the cold storage tube  300 , which are separate cold storage material storing parts, formed therebetween, the cold storage material and the heat exchanging medium may secure independent spaces, there is a low probability of the cold storage material interrupting the flow of the heat exchanging medium or the cold storage material and the heat exchanging medium being mixed with each other, and production efficiency may be improved due to a simplified structure. 
         [0051]    In addition, since there is no a refrigerant communication passage structure connecting the refrigerant tubes of the two columns, the refrigerant channel may be easily configured and since the refrigerant channel is configured by the two columns to decrease an amount of flow of the heat exchanging medium passing through the refrigerant header tank and the refrigerant tube of each column, a pressure drop of the heat exchanging medium may be decreased 
         [0052]    In addition, the cold storage heat exchanger according to the present invention has the two refrigerant channels formed therein as shown in  FIG. 5 , where flow directions of the refrigerant flowing along the two refrigerant channels may be formed to be different from each other by forming shapes of the inlet manifold  160  and the outlet manifold  170  to allow the two channels to be formed in one manifold. 
         [0053]    In addition, the refrigerant tubes  200  and the cold storage tube  300  are formed in an integral tube  500 , such that the cold storage tube  300  may be formed between the refrigerant tubes  200  of the two columns and the integral tube  500  may have cut grooves  510  formed in both ends thereof to be inserted into communication holes  140  formed in the header tank  100 . 
         [0054]    As shown in  FIG. 7 , the integral tube  500  is formed so that the cold storage tube  300  is disposed between the refrigerant tubes  200  of the two columns and has the cut grooves  510  respectively formed in both ends thereof, such that the refrigerant tubes  200  and the cold storage tube  300  are formed to be respectively inserted into the communication hole  140  of the refrigerant header tank  110  and the communication hole  140  of the cold storage header tank  120 , thereby making it possible to couple the integral tube  500  between the pair of header tanks  100  disposed vertically in one column. 
         [0055]    Therefore, as compared to the case in which the refrigerant tubes  200  of the two columns and the cold storage tube  300  of one column are respectively coupled to the header tank  100 , when the refrigerant tubes  200  and the cold storage tube  300  are manufactured in the integral tube  500 , the integral tube  500  may be very easily coupled to the header tank  100 . 
         [0056]    In this case, the integral tube  500  may be manufactured by performing an extrusion molding for the refrigerant tubes  200  and the cold storage tube  300  in an integral type and the integral tube  500  inserts both ends thereof into the pair of header tanks  100  and is then coupled thereto by a brazing, thereby preventing an occurrence of a leakage of the heat exchanging medium and the cold storage material. 
         [0057]    In addition, the refrigerant header tanks  110  and the cold storage header tank  120  may be formed to be spaced apart from each other by a predetermined distance as shown in  FIG. 8 . 
         [0058]    In addition, as the cold storage heat exchanger  1000  formed as described above is configured to further include a pump  600  and a reservoir  700  which are connected to the cold storage header tank  120 , it may be configured so that the cold storage material is circulated along the cold storage header tank  120  and the cold storage tube  300 . 
         [0059]    As shown in  FIG. 9 , the above-mentioned configuration is a configuration in which the pump  600  capable of circulating the cold storage material and the reservoir  700  in which the cold storage material is stored are separately provided outside the cold storage heat exchanger  1000 , such that the pump  600  is connected to one side of one cold storage header tank  120  by a pipe  900  and the reservoir  700  is connected to one side of another cold storage header tank  120  by the pipe  900 . Thus, since the cold storage heat exchanger  1000  is configured so that the cold storage material is circulated through the reservoir  700 , the pump  600 , the cold storage header tank  120 , the cold storage tube  300 , and the reservoir  700 , the amount of cold storage material is increased, thereby making it possible to cool interior air of a vehicle for a long time even in the case in which an engine of the vehicle is stopped. 
         [0060]    In this case, the pump  600  may be connected to a controller  800 , thereby controlling the circulation of the cold storage material by the controller  800 . That is, the controller  800  may control the pump  600  to be operated when the interior temperature of the vehicle is maintained at a proper temperature to circulate the cold storage material and store cooled air in a large amount of cold storage material stored in the reservoir  700  and may control the pump  600  not to be operated when the interior temperature of the vehicle needs to be decreased to prevent the circulation of the cold storage material so that the cold storage material does not absorb the cooled air of the refrigerant tube  200  and the interior temperature of the vehicle may be decreased in a short time. 
         [0061]    In addition, a cold storage heat exchanger  1000  according to the present invention is configured to include a pair of header tanks  100  having refrigerant header tanks  110  formed in two columns to allow a refrigerant to flow and formed to be spaced apart from each other by a predetermined distance and be in parallel with each other; an inlet manifold  160  and an outlet manifold  170  formed at both ends of the header tank  100  and being in communication with the refrigerant header tanks  110  of the two columns, the inlet manifold  160  being introduced with a refrigerant and the outlet manifold  170  discharging the refrigerant; a plurality of refrigerant tubes  200  having both ends connected to the refrigerant header tanks  110  of the two columns formed to be spaced apart from each other by the predetermined distance and having the refrigerant flowing therein; and a cold storage tube  300  provided between the refrigerant header tanks  110  of the two columns to have a cold storage material stored therein. 
         [0062]    The above-mentioned configuration is the similar configuration as the embodiment as described above, but as shown in  FIGS. 10 and 11 , the header tank  100  does not have the cold storage header tank  120  formed therein and is configured by only the refrigerant header tanks  110  of the two columns, such that the refrigerant tubes  200  of the two columns are coupled to the refrigerant header tanks  110  of the two columns. In addition, the cold storage tank  300  is provided between the refrigerant tubes  200  of the two columns, such that the cold storage material is stored in the cold storage tube  300 . In this case, the cold storage tube  300  is configured to have both sides coupled to be in contact with the refrigerant tubes  200  of the two columns, thereby making it possible to absorb cooled air. That is, the refrigerant tube  200  has both ends connected to the refrigerant header tank  110  so as to allow the heat exchanging medium to flow therein, while the cold storage tube  300  is formed in a pack form in which both ends thereof are blocked, thereby storing the cold storage material therein 
         [0063]    Thus, since the cold storage tube  300  in which the cold storage material is stored is formed in the pack form, there is no need to form the cold storage header tank  120  in the header tank  100  and connect the cold storage tube  300  to the header tank  100 , such that the configuration may be simple and the cold storage tube  300  may be easily assembled and replaced. 
         [0064]    In this case, the refrigerant header tanks  110  of the two columns may be formed to be spaced apart from each other by the predetermined distance. This means that the respective refrigerant header tanks  110  of the two columns are configured to be separately formed and spaced apart from each other by the predetermined distance in a width direction, where the refrigerant header tanks  110  of the two columns may be fixed and in communication with each other by having an integral end cap  150  or the manifolds  160  and  170  coupled to ends of the refrigerant header tanks  110 . 
         [0065]    Thus, since the refrigerant header tanks  110  of the two columns are configured to be spaced apart from each other by the predetermined distance, the heat exchanger of two layers is manufactured, such that the cold storage tube  300  of the pack form is assembled to be coupled between the refrigerant tubes  200  and the integral end cap  150  or the manifolds  160  and  170  are coupled to both ends of the refrigerant header tank  110 , thereby making it possible to manufacture one cold storage heat exchanger. In addition, since the refrigerant header tanks  110  of the two columns are configured to be spaced apart from each other by the predetermined distance, condensate water generated on surfaces of the refrigerant tube  200  and the cold storage tube  300  upon being heat-exchanged may be discharged between the refrigerant header tanks  110  of the two columns configured on a lower portion, thereby easily discharging the condensate water. 
         [0066]    In addition, the refrigerant header tanks  110  of the two columns formed on an upper portion among the pair of header tanks  100  are formed to be larger than the refrigerant header tanks  110  of the two columns formed on a lower portion, such that the refrigerant header tanks  110  of the two columns formed on the lower portion may be formed to be spaced apart from each other by the predetermined distance in the width direction. 
         [0067]    Thus, since the generated condensate water is discharged toward the refrigerant header tanks  110  configured on the lower portion as shown in  FIG. 12 , the refrigerant header tanks  110  of the two columns configured on the upper portion are formed in an integral type and are formed to be large, thereby making it possible to increase an amount of heat exchanging medium stored and flowing therein. As a result, flow resistivity of the heat exchanging medium flowing in the refrigerant header tanks  110  may be decreased. In addition, since the refrigerant header tanks  110  configured on the lower portion are formed to be spaced apart from each other by the predetermined distance, the cold storage tube  300  formed in the pack form between the refrigerant header tanks  110  may be replaced and assembled. 
         [0068]    In addition, the cold storage heat exchanger is configured to further include a cold storage material storing vessel  310  coupled to lower sides of the refrigerant header tanks  110  of the two columns formed on the lower portion and connected to a lower end of the cold storage tube  300 , where the cold storage material storing vessel  310  may be provided with a condensate water discharging hole  311  vertically penetrating through thereof. That is, as shown in  FIG. 13 , the cold storage material storing vessel  310  is formed in a length direction so that both sides are coupled to the lower sides of the refrigerant header tanks  110  of the two columns configured on the lower portion and the lower end of the cold storage tube  300  is connected to the cold storage material storing vessel  310 , and a plurality of discharging holes  311  are formed in the cold storage material storing vessel  310  to vertically penetrate through thereof in order to discharge the generated condensate water. Thus, since a large amount of cold storage material may be stored in the cold storage material storing vessel  310 , a large amount of cooled air may be stored. In addition, since the cold storage material may be cooled by the condensate water flowing around the cold storage material storing tank  310 , efficiency in cold storage may be further improved. 
         [0069]    In addition, the manifolds  160  and  170  or the end cap  150  may be provided with a cold storage tube supporter  320  coupled to the cold storage tube  300 . 
         [0070]    In this case, as shown in  FIG. 14 , the cold storage tube supporter  320  may be formed to be long so that both ends thereof are coupled to the inlet manifold  160  and the outlet manifold  170  formed at both ends of the header tank  100  of the upper side, or the cold storage tube supporter  320  may be formed to be long so that both ends thereof are coupled to a pair of integral end caps  150  formed at both ends of the header tank  100  of the lower side, and the cold storage tube supporter  320  may be coupled to the cold storage tubes  300  to serve to support the cold storage tubes  300 . 
         [0071]    The present invention is not limited to the above-mentioned embodiments but may be variously applied, and may be variously modified by those skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. 
         [0000]    
       
         
               
             
               
               
             
           
               
                   
               
               
                 LISTING OF THE ELEMENTS 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1000: cold storage heat 
                   
               
               
                 exchanger according to present 
               
               
                 invention 
               
               
                 100: header tank 
               
               
                 110: refrigerant header tank 
                 120: cold storage header tank 
               
               
                 130: baffle 
                 140: communication hole 
               
               
                 150: end cap 
                 151: cold storage material injecting part 
               
               
                 160: inlet manifold 
               
               
                 170: outlet manifold 
               
               
                 200: refrigerant tube 
               
               
                 300: cold storage tube 
               
               
                 310: cold storage material 
                 311: discharging hole 
               
               
                 storing vessel 
               
               
                 320: cold storage tube 
               
               
                 supporter 
               
               
                 400: fin 
               
               
                 500: integral tube 
                 510: cut groove 
               
               
                 600: pump 
               
               
                 700: reservoir 
               
               
                 800: controller 
               
               
                 900: pipe