Heat exchanger

Abstract

The present invention relates to a heat exchanger having a structure capable of alleviating leaning of a fluid regardless of a flow rate of a heat exchange medium, and specially even when a flow rate is small, inducing a proper flow rate to be distributed to a plurality of tubes in consideration of flow characteristics of a fluid, thereby improving heat exchange efficiency and performance, and more specifically, relates to a two-row heat exchanger having two passes and including: a first core and a second core each including a plurality of tubes; a first header tank and a second header tank coupled to opposite ends of the first core, respectively, wherein: the first header tank and the second header tank each include a partition wall for separating a fluid flow space formed therein into a first fluid channel and a second fluid channel; and when an introduction / discharge port through which a heat exchange medium is introduced and discharged is formed through at least one header tank among the first header tank and the second header tank, at least one communication hole is formed through the partition wall in the other header tank.

Description

heat exchanger

[0001] The present invention relates to a heat exchanger having a structure for improving the phenomenon of heat exchange medium concentration at the inlet and outlet locations.

[0002]

[0003] A heat exchanger is a device that performs heat exchange between different fluids for the purpose of cooling or raising the temperature of the fluid. The heat exchange medium circulating in the heat exchanger exchanges heat with the outside, giving or taking away heat and performing cooling or heat dissipation. Heat exchangers can be equipped in vehicles for various roles, such as a radiator that cools the engine to prevent the engine from overheating, a condenser that changes the high-temperature, high-pressure gaseous refrigerant from the air conditioner compressor into a low-temperature, high-pressure liquid refrigerant, an automatic transmission oil cooler that cools the oil in the automatic transmission, and an intercooler that cools the air heated through a turbocharger.

[0004] A typical heat exchanger may have a form in which a plurality of tubes through which refrigerant flows are arranged in parallel, and a pair of header tanks are connected to both ends of the tubes and allow the refrigerant to flow in the direction of the parallel arrangement of the tubes. In addition, depending on the purpose of the heat exchanger or the location where it is installed, the tubes may be formed in a single row or may be configured in two rows arranged in the front-back direction. In the case of a two-row heat exchanger, the refrigerant may form one or more passes depending on the number of times the refrigerant flows along the length of the tubes, and depending on the purpose of the heat exchanger or the efficiency, the heat exchanger may include multiple passes including various flow paths of the refrigerant.

[0005] When a two-row heat exchanger includes two passes, when the tube row into which the refrigerant flows is called the inlet row and the tube row from which the refrigerant flows is called the exhaust row, the two passes can be configured by having the flow of the refrigerant formed from the inlet row and the flow of the refrigerant formed from the exhaust row in different directions. If we explain in detail based on a simple two-pass that forms a pass according to each row, rows 1 and 2 form an inlet row and an exhaust row, respectively, and the refrigerant flowing into row 1 moves along one side of the length of the tube to form a pass and is then transferred to row 2 through a header tank on one side, and the refrigerant flowing into row 2 forms a pass along the other side in the opposite direction to row 1, thereby configuring two passes of the two-row heat exchanger.

[0006] In a two-row heat exchanger, refrigerant flows from the first row to the second row through a communication hole formed in the bulkhead that separates the first and second rows after the refrigerant flows into the header tank on one side. In addition, the conventional communication holes are arranged and configured at equal intervals throughout the bulkhead, with the number determined as needed. In the case of this heat exchanger, when the refrigerant flow rate is high, the fluid does not concentrate severely, so the fluid pressure drop is reduced and the fluid can flow evenly throughout all tubes.

[0007] However, when the refrigerant flow rate is low, the refrigerant is concentrated in the inlet / outlet passages, which causes a significant imbalance in the temperature distribution between the inlet / outlet side and the other side, which causes problems with the efficiency and performance of the heat exchanger. In particular, in the case of heat exchangers for automobile interiors, the above-mentioned problem can cause temperature deviation on the left and right sides, which causes the discharge temperatures on the driver's seat and the passenger's seat to be different, which can cause complaints from passengers.

[0008]

[0009] The present invention has been made to solve the above problems, and the purpose of the present invention is to provide a heat exchanger having a structure capable of performing appropriate fluid distribution in consideration of the flow characteristics of the heat exchange medium of the heat exchanger, and in particular, in a two-pass, two-row heat exchanger, the heat exchange medium on the inlet / outlet side is distributed to the entire tube through a communication hole appropriately arranged in the bulkhead of the header tank, and a heat exchanger capable of improving the flow distribution of the heat exchange medium regardless of the flow rate of the fluid through a structure capable of improving the flow of the fluid even when the flow rate is low is provided.

[0010]

[0011] In a heat exchanger comprising a first core and a second core in which a plurality of tubes through which a heat exchange medium of the present invention moves are arranged in two rows in the front-back direction, and a first header tank and a second header tank connected to the plurality of tubes and coupled to both ends of the first core and the second core in the longitudinal direction of the tubes, the first header tank and the second header tank include a fluid flow space therein, and include a first flow path and a second flow path for moving the fluid flow space separately to the first core and the second core arranged in different rows, and a partition wall dividing the first flow path and the second flow path, and when an inlet / outlet port for introducing and discharging a heat exchange medium is formed in at least one header tank among the first header tank and the second header tank, the other header tank is characterized in that at least one communication hole is formed in the partition wall.

[0012] At this time, the inlet / outlet port is formed at one end of the longitudinal direction of the header tank, and each of the first and second channels separated within the header tank includes at least one inlet or outlet port.

[0013] At this time, the above communication hole is characterized in that at least one or more are formed at the opposite end of one end where the inlet / outlet port is formed.

[0014] At this time, when the above communication holes are configured in multiple numbers, the communication holes are characterized in that they are all arranged on the opposite end side of the inlet / outlet port based on the central position among the lengths of the header tank.

[0015] In addition, when the above communication holes are configured in multiple numbers, the communication holes are characterized in that more than half of the number are arranged on the opposite end side of the inlet / outlet port based on the central position among the lengths of the header tank.

[0016] And, in the case where the above-mentioned communication hole has at least one size and is configured in multiple numbers, it is characterized in that, with respect to the total area of ​​the combined sizes of the multiple communication holes, more than half of the area is arranged on the opposite end of the inlet / outlet port based on the central position among the lengths of the header tank.

[0017] In addition, the header tank in which the inlet and outlet ports are formed is characterized in that it has a throttle that partially reduces the area of ​​the fluid flow space in at least one of the first and second flow paths.

[0018] At this time, when the inlet / outlet port is formed at one end of the length direction of the header tank, the throttle is characterized in that it is arranged on the side of the inlet / outlet port based on the central position of the length of the header tank.

[0019] And, the header tank including the throttle is characterized in that it includes at least one inlet or outlet in each of the first and second flow paths, and the throttle is arranged in the flow path in which the outlet is formed.

[0020] At this time, when there are multiple throttles, the plurality of throttles are characterized in that they are arranged at a predetermined interval from each other on the side of the discharge port based on the central position among the lengths of the header tank in the flow path where the discharge port is formed.

[0021] In addition, the header tank in which the inlet and outlet ports are formed is characterized in that it has at least one throttle in the first and second passages that partially reduces the area of ​​the fluid flow space.

[0022] At this time, when the inlet / outlet port is formed at one end of the length direction of the header tank, the throttle is characterized in that it is arranged on the side of the inlet / outlet port based on the central position of the length of the header tank.

[0023] And, the second header tank is coupled to the lower part in the direction of gravity of the first core and the second core, and the first header tank is coupled to the upper part in the direction of gravity of the first core and the second core, the second header tank includes the inlet and outlet ports, and the bulkhead of the first header tank is characterized in that it includes at least one of the communication holes.

[0024] At this time, the second header tank is characterized in that the inlet / outlet is formed at one end, the inlet is formed in the first flow path connected to the first core in the second header tank, the outlet is formed in the second flow path connected to the second core in the second header tank, and the first header tank has the communication hole arranged in the bulkhead on the other end.

[0025] At this time, the second flow path of the second header tank includes at least one throttle that partially reduces the area of ​​the fluid flow space, and the throttle is characterized in that it is arranged on one side of the length of the second flow path of the second header tank.

[0026]

[0027] The heat exchanger of the present invention having the above configuration has a plurality of communication holes appropriately arranged in a bulkhead installed inside a header tank connected to the end of a tube and includes a fluid flow improvement structure, thereby improving the flow of heat exchange medium at the inlet / outlet side even at a small flow rate, and the heat exchange medium can be evenly distributed to a plurality of tubes regardless of the flow rate, thereby improving the flow resistance and reducing the pressure drop, and has the effect of improving the efficiency and performance of the heat exchanger.

[0028]

[0029] Figure 1 is a rear perspective view of a heat exchanger according to one embodiment.

[0030] Figure 2 is a cross-sectional perspective view of the rear surface of a heat exchanger according to one embodiment.

[0031] Figure 3 is a heat pass conceptual diagram of a heat exchanger according to an embodiment.

[0032] Figure 4 is a cross-sectional view of the back of a heat exchanger according to one embodiment.

[0033] Figure 5 is a configuration diagram of a heat exchanger according to an embodiment.

[0034] Figure 6 is a conceptual diagram of a heat exchanger including a communication hole according to Example 1.

[0035] Figure 7 is a conceptual diagram of a heat exchanger including a communication hole according to Example 2.

[0036] Figure 8 is a conceptual diagram of a heat exchanger including a communication hole according to Example 3.

[0037] Figure 9 is a perspective view of a throttle according to an embodiment.

[0038] Figure 10 is a conceptual diagram of a heat exchanger including a throttle according to Example 1.

[0039] Fig. 11 is a conceptual diagram of a heat exchanger including a throttle according to Example 2.

[0040]

[0041] Hereinafter, the technical concept of the present invention will be described in more detail using the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concept of a term to best explain his or her invention, they should be interpreted in a way that aligns with the technical concept of the present invention.

[0042] Therefore, it should be understood that the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and that there may be various modified examples that can replace them at the time of filing this application.

[0043] Hereinafter, the technical concept of the present invention will be described in more detail using the attached drawings. The attached drawings are merely examples provided to more specifically explain the technical concept of the present invention, and therefore, the technical concept of the present invention is not limited to the form of the attached drawings.

[0044]

[0045] Referring to FIGS. 1 and 2, the present invention relates to a two-row heat exchanger in which a plurality of tubes, through which a heat exchange medium flows, are arranged in two rows in the front-back direction along the length. The heat exchanger of the present invention includes a first core (11) and a second core (12) arranged in the front-back direction, each including a plurality of tubes arranged in parallel, and a first header tank (100) and a second header tank (200) that accommodate the plurality of tubes and are respectively coupled to both ends of the tubes in the longitudinal direction. In more detail, the first core (11) may be arranged at the front end, and the second core (12) may be arranged at the rear end. In addition, the first header tank (100) and the second header tank (200) may be arranged at one end and the other end of the first core (11) and the second core (12), respectively. At this time, the tube may be arranged in a form in which the length is arranged along the direction of gravity.

[0046] The first header tank (100) and the second header tank (200) accommodate both ends of the first core (11) and the second core (12), which are tubes of one row and two rows, respectively, and include a fluid flow space inside for combining and flowing the heat exchange medium flowing through the tubes arranged in parallel in the header tank. Accordingly, the fluid flow space is characterized in that it forms a flow path length in a direction perpendicular to the longitudinal direction of the tubes. At this time, the header tank may include a flow path that separates the first row and the second row that it accommodates from each other.

[0047] In more detail, the first header tank (100) accommodates one end of the first core (11) and the second core (12) and includes a fluid flow space inside, and a partition wall (130) is arranged between the first core (11) and the second core (12) to separate and move the heat exchange medium flowing from each of the first core (11) and the second core (12), thereby dividing the first flow path (110) connected to the first core (11) and the second flow path (120) connected to the second core (12). That is, the partition wall (130) is arranged between the first flow path (110) and the second flow path (120) to separate the fluid flow space into the first flow path (110) and the second flow path (120). In addition, the second header tank (200) is also characterized in that it is provided with a first flow path (210), which is a flow path of a heat exchange medium flowing from the other end of the first core (11), and a second flow path (220), which is a flow path of a heat exchange medium connected from the other end of the second core (12), by arranging a partition wall (230) therebetween. At this time, the header tanks (100, 200) may include at least one communication hole (300) in the partition wall (130, 230). However, the header tank of the present invention is characterized in that it includes a communication hole (300) only in the partition wall of one of the header tanks among the first header tank (100) and the second header tank (200).

[0048] Referring to FIG. 3, the two-row heat exchanger of the present invention is characterized by applying a two-pass heat exchange medium flow. At this time, the heat exchanger can form the inflow heat and the exhaust heat of each tube with the first core (11) and the second core (12). That is, when the first core (11) is the inflow heat, the second core (12) can be the exhaust heat. With this as a basis, the two-pass flow will be described in more detail. The heat exchanger of the present invention forms the inflow heat in the first core (11), and the heat exchange medium flows through the first flow path connected to the first core (11) among the header tanks on the other side connected to the other end of the first core (11), and then flows along one direction of the first core (11) to move to the first flow path connected to the first core (11) among the header tanks on one side, thereby forming one pass. At this time, the header tank on one side includes at least one communication hole (300) in the bulkhead, and the communication hole (300) is a passage connecting the first flow path and the second flow path. In addition, the heat exchange medium moves from the first flow path to the second flow path within the header tank on one side through the communication hole (300), and flows along the other direction of the second core (12) to move to the second flow path connected to the second core (12) among the header tanks on the other side, thereby forming two passes. Accordingly, the second core (12) can form exhaust heat.

[0049] The present invention is a two-pass, two-row heat exchanger including the above-described configuration, and more specifically, it is characterized by a heat exchanger having a structure capable of improving fluid concentration regardless of the flow rate of a heat exchange medium, and in particular, by inducing an appropriate flow rate to be distributed to a plurality of tubes in consideration of the flow characteristics of the fluid even when the flow rate is low, thereby improving heat exchange efficiency and performance.

[0050] Accordingly, referring to FIGS. 1 to 3, the heat exchanger of the present invention is characterized by including a first core (11) and a second core (12) in which a plurality of tubes through which a heat exchange medium moves are arranged in two rows in the front-back direction, and a first header tank (100) and a second header tank (200) that accommodate the plurality of tubes and are respectively coupled to both ends of the first core (11) and the second core (12) in the longitudinal direction of the tubes. At this time, the first header tank (100) and the second header tank (200) include a fluid flow space that forms a length in a direction perpendicular to the longitudinal direction of the tubes therein, and include a first flow path (110, 210) and a second flow path (120, 220) that separate and move the heat exchange medium flowing from each tube of the first core (11) and the second core (12) arranged in different rows, and a partition wall (130, 230) that divides the first flow path (110, 210) and the second flow path (120, 220), and when an inlet / outlet (14) for introducing and discharging the heat exchange medium is formed in at least one header tank among the first header tank (100) and the second header tank (200), at least one or more It is characterized by the formation of a communication hole (300).

[0051] The header tank of the present invention is characterized by including a first header tank (100) and a second header tank (200) which are connected to one end and the other end of a first core (11) and a second core (12) which are arranged in two rows in the front-rear direction, respectively. At this time, each header tank includes a partition wall (130, 230) to separate the flow paths of refrigerant flowing from the first core (11) and the second core (12), and a first flow path (110, 120) connected to the first core (11) and a second flow path (120, 220) connected to the second core (12) are formed separately by the partition wall (130, 230). In addition, among the first header tank (100) and the second header tank (200) connected to each end of the tube, an inlet / outlet port (14) for forming inlet heat and exhaust heat may be formed in at least one of the header tanks. Accordingly, in the heat exchanger of the present invention, the inlet and exhaust of the heat exchange medium are formed through one end in the longitudinal direction of the tube.

[0052] And, referring to FIGS. 3 and 4, the present invention is characterized in that at least one communication hole (300) is formed in the bulkhead in another header tank in which the inlet / outlet port (14) is not formed. Accordingly, the heat exchanger of the present invention may be a two-pass structure in which a heat exchange medium is introduced from the header tank in which the inlet / outlet port (14) is formed to form inlet heat, the heat exchange medium is moved to another core through the header tank including the communication hole (300), and then the exhaust heat flows in the opposite direction to the inlet heat in the moved core. At this time, the header tanks may be arranged at the upper and lower portions from the direction of gravity of the tube, and at this time, the positions of the first header tank (100) and the second header tank (200) may be freely selected as needed, and the position of the inlet / outlet port (14) may be selected and provided in one of the first header tank (100) and the second header tank (200) as needed without limitation.

[0053] In one embodiment of the present invention, as illustrated in FIGS. 1 and 2, a first header tank (100) may be provided at an upper portion in the direction of gravity of the tube, and a second header tank (200) may be provided at a lower portion. That is, the first header tank (100) may be provided at an upper portion in the direction of gravity of the first core (11) and the second core (12), and the second header tank (200) may be provided at a lower portion of the first core (11) and the second core (12). At this time, the second header tank (200) may include an inlet / outlet port (14). In addition, the first header tank (100) may include at least one communication hole (300) in the bulkhead. That is, the heat exchanger of the present invention is characterized by including the inlet / outlet port (14) at the lower end and a communication hole (300) in the bulkhead of the header tank arranged at the upper end. Accordingly, the heat exchanger of the present invention is such that the heat exchange medium flowing in from the first core (11) of the second header tank (200), which is the lower end of the heat exchanger, moves upward, then flows into the second core (12) through the communication hole (300) of the first header tank (100) at the upper end, moves downward along the second core (12), and then is discharged to the outside from the second header tank (200).

[0054] And, the header tank of the present invention is characterized in that the fluid flow space has a length in a direction perpendicular to the longitudinal direction of the tube, and the inlet / outlet (14) is formed at one end of the longitudinal direction of the header tank. At this time, as shown in FIGS. 1 and 2, the inlet / outlet (14) may be formed at one end of the header tank. And, the inlet / outlet (14) may be formed by dividing the inlet (13) and the outlet (14), and each of the inlet (13) and the outlet (14) may be arranged at least one in each of the first and second passages divided within the header tank in which the inlet / outlet (14) is formed. That is, the header tank including the inlet / outlet (14) is characterized in that it includes an inlet (13) or an outlet (14) in each of the first and second passages. Accordingly, the inlet (13) and outlet (14) may be arranged at one end of the first and second channels of the header tank in which the inlet and outlet (14) are formed. It is preferable that one inlet (13) or one outlet (14) be arranged in each channel, and one may be selected and provided in each of the first and second channels as needed.

[0055] Referring to Fig. 4, the present invention is characterized in that, in another header tank in which an inlet / outlet port (14) is not formed, at least one communication hole (300) is formed in a bulkhead. The communication hole (300) is characterized in that it is formed with a certain size in the bulkhead that separates the internal fluid flow space of the header tank into first and second passages. Accordingly, the heat exchange medium inside the header tank can flow between the first and second passages through the communication hole (300). It is preferable that the communication hole (300) is formed with a diameter smaller than the height of the bulkhead. The communication holes (300) can be arranged in an appropriate size, number, and position selected according to the need in the bulkhead. At this time, the communication hole (300) of the present invention can be arranged in the opposite direction from the end where the inlet / outlet port (14) is formed in the longitudinal direction of the header tank. That is, the above-mentioned communication hole (300) can be placed in the bulkhead on the other end side.

[0056] As shown in FIGS. 4 and 5, in one embodiment of the present invention, when a first header tank (100) is provided at the upper end in the direction of gravity of the first core (11) and the second core (12), and a second header tank (200) is provided at the lower end, an inlet / outlet port (14) may be formed at one end of the second header tank (200). In addition, an inlet port (13) may be formed in a first flow path (210) connected to the first core (11) in the second header tank (200), and an outlet port (14) may be formed in a second flow path (220) connected to the second core (12) in the second header tank (200). That is, the second header tank (200) has an inlet (13) formed at one end of the first core (11) and an outlet (14) formed at one end of the second core (12). At this time, the first header tank (100) may have at least one communication hole (300) arranged in the bulkhead on the other end. Accordingly, the heat exchange medium introduced from one side through the first flow path (210) of the second header tank (200) moves upward, and flows into the second core (12) through the communication hole (300) formed on the other side of the first header tank (100) at the upper end. Accordingly, the heat exchanger of the present invention has a communication hole (300) arranged on the other end opposite to the one end where the inlet / outlet port (14) is formed, so that even when the fluid flow rate is low, the fluid introduced from one side can be induced to move along the other side, thereby having the effect of performing appropriate fluid distribution.

[0057] And, the communication holes (300) provided in the bulkhead may be configured in multiple numbers. At this time, referring to FIG. 5, the header tank including the inlet / outlet port (14) may have the inlet / outlet port (14) formed at one end along the length of the header tank. And, the header tank having the communication hole (300) may have at least one communication hole (300) at the end opposite to the inlet / outlet port (14). That is, when the inlet / outlet port (14) is arranged on one side, the communication hole (300) may be arranged on the other side. In more detail, when the communication holes (300) are configured in multiple numbers, the header tank having the communication holes (300) is characterized in that the plurality of communication holes (300) are arranged on the other end based on the central position corresponding to half of the length of the header tank. The above communication hole (300) is for appropriately disposing the fluid to facilitate the flow of the heat exchange medium at low flow rates, and is characterized by being disposed on the opposite side of the inlet / outlet port (14).

[0058] At this time, as illustrated in FIG. 6, a plurality of communication holes (300) formed in a certain size may all be arranged on the other end based on a central position corresponding to half of the header tank. Alternatively, as illustrated in FIG. 7, a plurality of communication holes (300) formed in a certain size may be arranged in a majority number on the other end based on the central position of the header tank. Alternatively, as illustrated in FIG. 8, when the communication holes (300) have at least one size and are configured in plurality, a majority number of the areas of the plurality of communication holes (300) may be arranged on the other end based on the central position of the header tank, with respect to the total area of ​​the combined sizes of the plurality of communication holes (300). At this time, when a majority or more of the plurality of communication holes (300) are arranged on the other end of the header tank, a predetermined number of communication holes (300) may be arranged on one end of the header tank. That is, the present invention is preferably configured such that more than half of the areas constituting the plurality of communication holes (300) or the entire area is arranged on the other end side of the header tank.

[0059] For example, when the length of the header tank is L, the length of the bulkhead may also be L, and the length from the other end or from one end to the center position of the header tank is each (1 / 2)L. In addition, the diameter of the communication hole (300) formed in the bulkhead may be d, and the number of communication holes provided may be n. In this case, nd, which is the sum of the diameters of at least a plurality of communication holes (300), may be smaller than (1 / 2)L. In addition, the n communication holes (300) may all be arranged within a portion from one end to the center position of the header tank. Alternatively, among the n communication holes (300), at least n / 2 of the n communication holes (300) may be arranged within a portion from one end to the center position of the header tank. Alternatively, the n communication holes (300) may be configured with a number of communication holes (300) each having a diameter of d1 and a diameter of d2 of different sizes, and more than half of the total area of ​​the combined sizes of the plurality of communication holes (300) may be arranged within the central position from one end of the header tank. In this case, the combined area of ​​the sizes of the plurality of communication holes (300) is It may be. Accordingly, it is desirable to appropriately separate and arrange each communication hole (300) of different sizes so that, among the total area of ​​the plurality of communication holes (300), more than half of the area is arranged within the area from one end of the header tank to the center position.

[0060]

[0061] In addition, referring to FIG. 5, the header tank in which the inlet / outlet port (14) of the present invention is formed is characterized in that it has at least one throttle (400) that partially reduces the area of ​​the fluid flow space in at least one of the first and second flow paths. The throttle (400) is provided in a flow path that forms a length in a direction perpendicular to the tube, and the throttle (400) may be a bulkhead structure that forms an inner surface with a smaller area than the inner surface of the flow path so as to control the flow rate in the longitudinal direction of the header tank. Referring to FIG. 9 in more detail, the throttle (400) may be a bulkhead structure with a hole in the center, and the inner surface of the hole is formed smaller than the inner surface of the flow path, so that the area of ​​the flow path is partially reduced by the throttle (400). The above throttle (400) can control the flow rate of the fluid flowing inside by reducing the area of ​​the flow path, thereby improving the temperature distribution of the heat exchanger. The throttle (400) of the present invention can be freely provided with the number and location selected as needed. In this case, the throttle (400) can be placed at a central position corresponding to half of the length of the header tank.

[0062] Referring to FIGS. 2 and 5, the throttle (400) of the present invention is provided in a header tank having an inlet / outlet port (14). At this time, the inlet / outlet port (14) may be formed at either end of the longitudinal direction of the header tank, or may be formed at one end. At this time, the throttle (400) may be arranged at a central position corresponding to half of the longitudinal direction of the header tank. Alternatively, the throttle (400) may be arranged on the side of the inlet / outlet port (14) based on the central position corresponding to half of the longitudinal direction of the header tank. That is, the throttle (400) may be arranged at one side of the header tank.

[0063] And, as illustrated in Fig. 6, in the header tank in which the inlet / outlet port (14) is formed, when the first and second channels formed inside are arranged at each inlet port (13) or outlet port (14), the throttle (400) is characterized in that it is arranged within the channel in which the outlet port (14) is formed. Accordingly, when a small amount of heat exchange medium flows toward the outlet port (14), the flow rate is controlled by the throttle (400), so that the heat exchange medium can be distributed and moved more evenly.

[0064] Alternatively, as illustrated in Fig. 10, in the header tank in which the inlet and outlet ports (14) are formed, when each inlet port (13) or outlet port (14) is arranged in the first and second channels formed inside, the throttle (400) may be provided in each of the first and second channels. At this time, the throttle (400) may be arranged at one end of the first channel in which each inlet port (13) is arranged and at one end of the second channel in which the outlet port (14) is arranged, based on the central position of the header tank. Accordingly, when the heat exchange medium flows through each of the first and second channels, there is an effect of being able to appropriately distribute the fluid in consideration of the characteristics of the fluid flow according to the flow rate.

[0065] In addition, as illustrated in FIG. 11, the throttle (400) may be configured in multiple pieces. When the throttle (400) is configured in multiple pieces, the multiple throttles (400) may be arranged at a predetermined interval from each other on the side where the inlet / outlet ports (14) are formed based on the central portion in the longitudinal direction of the header tank. At this time, the throttles (400) may be arranged at a predetermined interval from each other on one side of the flow path where the outlet (14) is provided.

[0066] As shown in FIGS. 2 and 4, in one embodiment of the present invention, when a first header tank (100) is provided at the upper end in the direction of gravity of the first core (11) and the second core (12), and a second header tank (200) is provided at the lower end, an inlet / outlet port (14) may be formed at one end of the second header tank (200). In addition, the second header tank (200) may have an inlet port (13) formed at one end of the first core (11), an outlet port (14) formed at one end of the second core (12), and the first header tank (100) may have at least one communication hole (300) arranged in a bulkhead on the other end. At this time, the second flow path (220) of the second header tank (200) may include at least one throttle (400), and the throttle (400) may be arranged on one side of the longitudinal direction of the second flow path (220) of the second header tank (200). Therefore, the heat exchanger of the present invention has a communication hole (300) arranged on the other end opposite to the end where the inlet / outlet (14) is formed, and has a throttle (400) provided near the outlet (14) among the inlet / outlet ports (14), so that even when the flow rate of the fluid is low, the fluid introduced from one side can be induced to flow along the other side with the flow rate controlled, thereby performing appropriate fluid distribution, thereby improving the temperature distribution of the heat exchanger.

[0067]

[0068] As described above, the present invention has been described with specific details such as specific components and limited example drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above-described embodiment, and those skilled in the art to which the present invention pertains can make various modifications and variations from this description.

[0069] Therefore, the idea of ​​the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the scope of the patent claims as well as the scope of the patent claims are considered to fall within the scope of the idea of ​​the present invention.

[0070]

[0071] [Explanation of symbols]

[0072] 10: Heat exchanger

[0073] 11: 1st core 12: 2nd core

[0074] 13: Inlet 14: Outlet

[0075] 100: 1st header tank 110: 1st euro

[0076] 120: 2nd Euro 130: Bulkhead

[0077] 200: 2nd header tank 210: 1st Euro

[0078] 220: 2nd Euro 230: Bulkhead

[0079] 300: Chimney hole

[0080] 400: Throttle

Claims

1. A heat exchanger including a first core and a second core in which a plurality of tubes through which a heat exchange medium moves are arranged in two rows in the front-back direction, and a first header tank and a second header tank connected to the plurality of tubes and respectively coupled to both ends of the first core and the second core in the longitudinal direction of the tubes, The first header tank and the second header tank include a fluid flow space therein, and include a first flow path and a second flow path that move the fluid flow space separately to the first core and the second core arranged in different rows, and a partition wall that divides the first flow path and the second flow path. If an inlet / outlet port for introducing and discharging a heat exchange medium is formed in at least one of the first header tank and the second header tank, A heat exchanger characterized in that in another header tank, at least one communication hole is formed in the bulkhead.

2. In paragraph 1, The above inlet and outlet ports are formed at one end of the length of the header tank, A heat exchanger characterized in that each of the first and second passages separated within the header tank includes at least one inlet or outlet.

3. In paragraph 2, The above communication hole is, A heat exchanger characterized in that at least one is formed at an opposite end of one end where the above inlet and outlet ports are formed.

4. In paragraph 3, In case the above communication holes are configured in multiple numbers, A heat exchanger characterized in that the above communication holes are all arranged on the opposite end side of the inlet / outlet port based on the central position among the lengths of the header tank.

5. In paragraph 3, In case the above communication holes are configured in multiple numbers, A heat exchanger characterized in that more than half of the above communication holes are arranged on the opposite end of the inlet / outlet port based on the central position of the length of the header tank.

6. In paragraph 3, If the above-mentioned communication hole has at least one size and is configured in multiple numbers, A heat exchanger characterized in that, with respect to the total area of ​​the combined sizes of the plurality of above-mentioned communication holes, more than half of the area is arranged on the opposite end side of the inlet / outlet port based on the central position of the length of the header tank.

7. In paragraph 1, The header tank in which the above inlet and outlet ports are formed is A heat exchanger characterized in that at least one of the first and second flow paths has a throttle that partially reduces the area of ​​the fluid flow space.

8. In paragraph 7, If the above inlet / outlet port is formed at one end of the length of the header tank, A heat exchanger characterized in that the throttle is positioned on the inlet / outlet side based on the central position among the lengths of the header tank.

9. In paragraph 7, The header tank including the throttle includes at least one inlet or outlet in each of the first and second flow paths, A heat exchanger characterized in that the above throttle is arranged in a path in which the outlet is formed.

10. In paragraph 9, If there are multiple throttles above, A heat exchanger characterized in that a plurality of the above throttles are arranged at a predetermined interval from each other on the side of the outlet based on the central position of the length of the header tank in the flow path in which the outlet is formed.

11. In paragraph 1, The header tank in which the above inlet and outlet ports are formed is A heat exchanger characterized in that the first and second flow paths have at least one throttle that partially reduces the area of ​​the fluid flow space.

12. In paragraph 11, If the above inlet / outlet port is formed at one end of the length of the header tank, A heat exchanger characterized in that the throttle is positioned on the inlet / outlet side based on the central position among the lengths of the header tank.

13. In paragraph 1, When the second header tank is coupled to the lower part in the direction of gravity of the first core and the second core, and the first header tank is coupled to the upper part in the direction of gravity of the first core and the second core, The above second header tank includes the above inlet and outlet ports, A heat exchanger, characterized in that the bulkhead of the first header tank includes at least one of the above communication holes.

14. In paragraph 13, The above second header tank has the inlet and outlet formed at one end, An inlet is formed in the first flow path connected to the first core in the second header tank, In the second header tank, an outlet is formed in the second flow path connected to the second core. The above first header tank is a heat exchanger characterized in that the communication hole is arranged in the bulkhead on the other end.

15. In paragraph 14, The second flow path of the second header tank includes at least one throttle that partially reduces the area of ​​the fluid flow space, A heat exchanger characterized in that the above throttle is arranged on one side of the length of the second flow path of the second header tank.

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