Heat exchanger and method for manufacturing same

Abstract

According to the present invention, provided is an heat exchanger comprising: a tube having an inlet and an outlet and extending between the inlet and the outlet to provide a flow path through which a refrigerant flows; and a heat transfer structure which is formed by coupling a first heat transfer block having a first heat transfer member and a second heat transfer block having a second heat transfer member with the tube interposed therebetween, and which transfers heat between the refrigerant and an external fluid for heat exchange, wherein the heat transfer structure is made of a composite material including a resin material and a carbon material.

Description

Heat exchanger and manufacturing method thereof

[0001] The present invention relates to a heat exchanger, and more particularly, to a heat exchanger having a refrigerant tube through which a refrigerant flows and a plurality of plate-shaped heat transfer fins coupled to the refrigerant tube, and a method for manufacturing the same.

[0002] A technology related to a heat exchanger having a refrigerant pipe through which refrigerant flows and a plurality of plate-shaped heat transfer fins connected to the refrigerant pipes is disclosed in Korean Patent Publication No. 10-2000-0066528, which includes a configuration in which a copper pipe through which refrigerant flows is inserted into a plurality of fins which are perforated aluminum thin plates, and then the pipes are expanded by hydraulic pressure such as air to seal the pipes to the fins. However, such a conventional heat exchanger has a problem in that the manufacturing process is complicated because it essentially requires surface treatment for the metal fins such as expansion and anodizing, and a welding process for connecting straight refrigerant pipes with U-shaped connecting pipes to form a closed circuit of refrigerant pipes.

[0003] The purpose of the present invention is to provide a heat exchanger having a refrigerant tube that is easy to manufacture and a plurality of plate-shaped heat transfer fins coupled to the refrigerant tube, and a method for manufacturing the same.

[0004] In order to achieve the above object of the present invention, according to one aspect of the present invention, there is provided a tube having an inlet and an outlet formed therein and extending between the inlet and the outlet to provide a flow path through which a refrigerant flows; And a heat exchanger is provided, wherein a first heat transfer block having a first heat transfer member and a second heat transfer block having a second heat transfer member are joined with the tube therebetween, and a heat transfer structure is formed to transfer heat between the refrigerant and an external heat exchange target fluid, wherein the heat transfer structure is made of a composite material including a resin material and a carbon material, and the heat transfer structure has a plurality of heat transfer fin parts sequentially arranged along an extension direction of the tube, and a tube coupling part sequentially penetrating the plurality of heat transfer fin parts and surrounding the tube from the outside, and the first heat transfer member has a plurality of first heat transfer fin parts forming one side portion of each of the plurality of heat transfer fin parts, and a first tube coupling part forming one half of the tube coupling part, and the second heat transfer member has a plurality of second heat transfer fin parts forming the other side portion of each of the plurality of heat transfer fin parts, and a second tube coupling part forming the other half of the tube coupling part.

[0005] In order to achieve the above object of the present invention, according to another aspect of the present invention, there is provided a first heat transfer block preparation step in which a first heat transfer block having a first heat transfer member made of a composite material including a resin material and a carbon material is prepared; a second heat transfer block preparation step in which a second heat transfer block having a second heat transfer member made of a composite material including a resin material and a carbon material is prepared; a tube preparation step in which an inlet and an outlet are formed and a tube is prepared that extends between the inlet and the outlet to provide a flow path for a refrigerant; an adhesion step in which the first heat transfer member and the second heat transfer member are adhered to the tube; And a block bonding step in which the first heat transfer block and the second heat transfer block are bonded, wherein the first heat transfer member has a first tube joint portion and a plurality of first heat transfer fin portions formed integrally with the first tube joint portion, and the second heat transfer member has a second tube joint portion and a plurality of second heat transfer fin portions formed integrally with the second tube joint portion, and each of the inner circumference of the first tube joint portion and the inner circumference of the second tube joint portion is formed to correspond to half of the outer circumference of the tube, and in the bonding step, the inner circumference of the first tube joint portion and the inner circumference of the second tube joint portion are bonded to the outer circumference of the tube, so that the first tube joint portion and the tube joint portion surround the outer circumference of the tube.

[0006] According to the present invention, all of the aforementioned objectives of the present invention can be achieved. Specifically, two heat transfer members made of a composite material including a resin material and a carbon material are joined together to form a heat transfer structure, with a tube through which refrigerant flows between them, thereby facilitating the manufacture of a heat exchanger.

[0007] Figure 1 is a perspective view of a heat exchanger according to one embodiment of the present invention.

[0008] Figure 2 is a side view of the heat exchanger illustrated in Figure 1.

[0009] Figure 3 is an exploded perspective view of the heat exchanger illustrated in Figure 1.

[0010] Fig. 4 is a cross-sectional view of the heat exchanger illustrated in Fig. 2 taken along line A_A'.

[0011] Figure 5 is a flowchart schematically illustrating a method for manufacturing a heat exchanger according to one embodiment of the present invention.

[0012] Hereinafter, the configuration and operation of an embodiment of the present invention will be described in detail with reference to the drawings.

[0013] FIGS. 1 to 4 illustrate a heat exchanger according to an embodiment of the present invention. Referring to FIGS. 1 to 4, a heat exchanger (100) according to an embodiment of the present invention includes a tube (110), an electrode structure (116), and a heat transfer structure (120) coupled to the tube (110) and electrically connected to the electrode structure (116). The heat exchanger (100) releases heat to the outside or absorbs heat from the outside as a refrigerant flows along the tube (110) through the heat transfer structure (120). When the refrigerant releases heat to the outside, the heat exchanger (100) can function as a condenser, and when the refrigerant absorbs heat from the outside, the heat exchanger (100) can function as an evaporator.

[0014] The tube (110) provides a single flow path formed inside, and the refrigerant flows through the flow path provided by the tube (110). The heat of the refrigerant flowing through the tube (110) is transferred to the heat transfer structure (120) via the tube (110). The two ends of the tube (110) in the extension direction form a refrigerant inlet (112) through which the refrigerant flows in and a refrigerant outlet (113) through which the refrigerant flows out, respectively. In the present embodiment, the tube (110) is described as being a copper tube with excellent thermal conductivity commonly used in heat exchangers, but the present invention is not limited thereto. In the present embodiment, the tube (110) is described as having a circular cross-section, but the present invention is not limited thereto.

[0015] The tube (110) has a plurality of main parts (114) and a plurality of connecting parts (115).

[0016] Each of the plurality of main pipes (114) extends generally in a straight line. The plurality of main pipes (114) are positioned so as to be arranged in parallel on a single plane. The plurality of main pipes (114) are connected to a heat transfer structure (120). The plurality of main pipes (114) are continuously connected by a plurality of connecting pipes (115).

[0017] A plurality of connecting pipes (115) connect two adjacent main pipes (114) so ​​that the plurality of main pipes (114) are connected continuously. The connecting pipe (115) is generally 'U' shaped and connects the two main pipes (114). Both ends of the connecting pipe (115) are connected to the adjacent ends of each of the two adjacent main pipes (114).

[0018] In this embodiment, the tube (110) is described as being formed by bending a single pipe, but the present invention is not limited thereto. For example, the tube (110) may be formed by welding a plurality of straight pipes forming each of the main pipe sections (114) and U-shaped pipes forming each of the connecting pipe sections (115), and this also falls within the scope of the present invention.

[0019] The electrode structure (116) includes a first electrode member (117) and a second electrode member (118). The first electrode member (117) is in the form of an electrically conductive line or rod extending in a straight line, and the first electrode member (117) and the second electrode member (118) are installed in a heat transfer structure (120) and are electrically connected. The first electrode member (117) and the second electrode member (118) are positioned on opposite sides of the heat transfer structure (120) with the tube (110) interposed therebetween. The first electrode member (117) and the second electrode member (118) extend substantially parallel to the main parts (114) of the tube (110). A voltage difference is generated between the first electrode member (117) and the second electrode member (118) by an external power source, and the heat transfer structure (120) generates heat due to the voltage difference between the first electrode member (117) and the second electrode member (118), so that when the heat exchanger (100) is a low-temperature evaporator, the frost accumulated in the heat transfer structure (120) can be melted and removed during the heat absorption process.

[0020] The heat transfer structure (120) is coupled to the tube (110) to transfer external heat to the refrigerant flowing through the tube (110) or to release the heat of the refrigerant flowing through the tube (110) to the outside. Heat exchange occurs between the refrigerant flowing along the tube (110) and the air surrounding the heat transfer structure (120) through the heat transfer structure (120). The heat transfer structure (120) is made entirely of a composite material including a resin material and a carbon material. The carbon material of the composite material constituting the material of the heat transfer structure (120) includes at least one of carbon fiber, carbon nanotube, and graphene. The carbon material of the composite material is dispersed in the resin material and forms an electrical network. In the present embodiment, the length of the carbon material is 1 to 100 μm, and the content of the carbon materials is described as being 5 wt% or more and 25 wt% or less in order to form an electrical network, but the present invention is not limited thereto. In this embodiment, carbon nanotubes (CNTs) are used as the carbon material, but the present invention is not limited thereto. The composite material forming the heat transfer structure (120) may further include an additive such as a metal powder that improves thermal conductivity. The additive is interposed between the carbon materials to increase the electrical network by the carbon materials and at the same time increase the thermal conductivity of the heat transfer structure (120). In this embodiment, the additive is a metal powder with a diameter of 10 nm to 100 nm, and the content of the metal powder is described as being 12 wt% or more to increase the electrical network between the carbon materials and increase the thermal conductivity of the composite material, and 30 wt% or less to reduce the specific gravity of the composite material, but the present invention is not limited thereto. In this embodiment, aluminum powder is used as an example to describe the additive, but the present invention is not limited thereto.

[0021] A heat transfer structure (120) includes a plurality of heat transfer fin parts (130), a plurality of tube coupling parts (140) that sequentially penetrate the plurality of heat transfer fin parts (130) and surround a plurality of main parts (114) of a tube (110), a first electrode coupling part (150) that sequentially penetrates the plurality of heat transfer fin parts (130) and surrounds a first electrode member (117), a second electrode coupling part (160) that sequentially penetrates the plurality of heat transfer fin parts (130) and surrounds a second electrode member (118), and a plurality of ultrasonic welding parts (170). The heat transfer structure (120) is formed by coupling a first heat transfer block (180) and a second heat transfer block (190) with a plurality of main parts (114) provided on a tube (110) interposed therebetween. The heat transfer structure (120) of the illustrated embodiment is formed by a first heat transfer block (180) and a second heat transfer block (190) of the same shape.

[0022] Each of the plurality of heat transfer fin parts (130) is a generally rectangular plate-shaped rod shape that extends along the arrangement direction (up-down direction in FIG. 2) of the plurality of main parts (114) provided on the tube (110). Each of the plurality of heat transfer fin parts (130) is arranged so as to be generally perpendicular to the extension direction of the main part (114) provided on the tube (110). The plurality of heat transfer fin parts (130) are arranged in a row one after another along the extension direction of the main part (114) provided on the tube (110). Accordingly, the main parts (114) of the tube (110) penetrate the heat transfer fin parts (130) at a generally right angle. Each of the plurality of heat transfer fin parts (130) is spaced apart from another adjacent heat transfer fin part (130), so that a passage (132) through which air can flow is formed between two adjacent heat transfer fin parts (130). Heat exchange occurs between the refrigerant flowing through the tube (110) in the heat transfer fin part (130) and the air flowing through the passage (132). Each of the plurality of main tube parts (114) provided in the tube (110) passes through each of the plurality of heat transfer fin parts (130) while forming a substantially right angle. Two adjacent heat transfer fin parts (130) among the plurality of heat transfer fin parts (130) are structurally connected by a plurality of tube coupling parts (140), a first electrode coupling part (150), and a second electrode coupling part (160). In this embodiment, the heat transfer fin portion (130) is described as having a flat plate shape, but unlike this, at least a portion thereof may have a shape having a curve that allows injection, and this also falls within the scope of the present invention.

[0023] Each of the plurality of tube-joining tube sections (140) extends to sequentially penetrate the plurality of heat transfer fin sections (130) and externally closely surrounds the plurality of main sections (114) provided on the tube (110). The plurality of heat transfer fin sections (130) spaced apart from the plurality of tube-joining tube sections (140) are integrally connected. The inner surface of the tube-joining tube section (140) and the outer surface of the main section (114) provided on the tube (110) are bonded using a thermally conductive adhesive. The thermally conductive adhesive can fill the gap between the outer surface of the main section (114) and the inner surface of the tube-joining tube section (140), thereby improving heat conduction performance.

[0024] The first electrode joint (150) extends to sequentially penetrate a plurality of heat transfer fin parts (130) and wraps the first electrode member (117) in close contact with the outside. A plurality of heat transfer fin parts (130) spaced apart from the first electrode joint (150) are integrally connected. The first electrode member (117) is integrally formed in the first electrode joint (150) by an insert injection method. The first electrode member (117) extending from the inside of the first electrode joint (150) extends together with the first electrode joint (150) to sequentially pass through the plurality of heat transfer fin parts (130).

[0025] The second electrode joint (160) extends to sequentially penetrate a plurality of heat transfer fin parts (130) and wraps the second electrode member (118) in close contact with the outside. A plurality of heat transfer fin parts (130) spaced apart from the second electrode joint (160) are integrally connected. The second electrode member (118) is integrally formed in the second electrode joint (160) by an insert injection method. The second electrode member (118) extending from the inside of the second electrode joint (160) extends together with the second electrode joint (160) to sequentially pass through the plurality of heat transfer fin parts (130).

[0026] The first electrode coupling portion (150) and the second electrode coupling portion (160) are respectively positioned at two corner portions that are opposite to each other with a plurality of tube coupling portions (140) interposed between the plurality of heat transfer fin portions (130). Accordingly, the first electrode member (117) that extends together with the first electrode coupling portion (150) and the second electrode member (118) that extends together with the second electrode coupling portion (160) also pass through the corner portions that are opposite to each other with a plurality of tube coupling portions (140) interposed between the plurality of heat transfer fin portions (130), respectively.

[0027] Each of the plurality of ultrasonic fusion portions (170) is a portion where the first heat transfer block (180) and the second heat transfer block (190) are joined by ultrasonic fusion. The ultrasonic fusion portion (170) is formed by protruding radially outward from the tube coupling portion (140) between two neighboring heat transfer fin portions (130) among the plurality of heat transfer fin portions (130). The ultrasonic fusion portion (170) is formed integrally with the two neighboring heat transfer fin portions (130), and thus also serves to improve structural strength. In the present embodiment, it is described that the ultrasonic fusion portions (170) are formed in six locations, but the present invention is not limited thereto.

[0028] The heat transfer structure (120) is formed by combining a first heat transfer block (180) and a second heat transfer block (190) with a plurality of main sections (114) provided in the tube (110) in between.

[0029] The first heat transfer block (180) has a first heat transfer member (181) and a first electrode member (117) electrically connected to the first heat transfer member (181).

[0030] The first heat transfer member (181) has a first tube joint (182), a plurality of first heat transfer fin parts (185) formed integrally with the first tube joint (182), a plurality of first fusion parts (188), and a first electrode joint (150).

[0031] The first tube joint (182) is a generally semi-cylindrical shape extending in a straight line and forms one half of a tube joint (140) provided in a heat transfer structure (120). The inner circumference of the first tube joint (182) corresponds to one half of the outer circumference of the main section (114) provided in the tube (110). The inner circumference of the first tube joint (182) is bonded to one side of the outer circumference of the main section (114) provided in the tube (110) using a heat-conductive adhesive.

[0032] Each of the plurality of first heat transfer fin parts (185) is generally a rectangular plate shape and is formed integrally with the first tube joint part (182). Each of the plurality of first heat transfer fin parts (185) forms one side portion of each of the plurality of heat transfer fin parts (130) provided in the heat transfer structure (120).

[0033] Each of the plurality of first fusion portions (188) is formed by protruding outward from the first tube joint portion (182) between two neighboring first heat transfer fin portions (185) among the plurality of first heat transfer fin portions (185). The first fusion portion (188) is formed integrally with the two neighboring first heat transfer fin portions (185).

[0034] Since the first electrode joint (150) is as described above, a detailed description thereof is omitted here.

[0035] Since the first electrode member (117) is as described above, a detailed description thereof is omitted here.

[0036] The second heat transfer block (190) has a second heat transfer member (191) and a second electrode member (118) electrically connected to the second heat transfer member (191).

[0037] The second heat transfer member (191) has a second tube joint (192), a plurality of second heat transfer fin parts (195) formed integrally with the second tube joint (192), a plurality of second fusion parts (198), and a second electrode joint (160).

[0038] The second tube joint (192) is a generally semi-cylindrical shape extending in a straight line and forms the other half of the tube joint (140) provided in the heat transfer structure (120). The inner circumference of the second tube joint (192) corresponds to the other half of the outer circumference of the main tube (114) provided in the tube (110). The inner circumference of the second tube joint (192) is bonded to the other half of the outer circumference of the main tube (114) provided in the tube (110) using a heat-conductive adhesive. The two circumferential ends of the second tube joint (192) are in close contact with the two circumferential ends of the first tube joint (182) provided in the first heat transfer member (181). The two circumferential ends of the first tube joint (182) and the two circumferential ends of the second tube joint (192) can be bonded using a heat-conductive adhesive.

[0039] Each of the plurality of second heat transfer fin parts (195) is generally a rectangular plate shape and is formed integrally with the second tube joint part (192). Each of the plurality of second heat transfer fin parts (195) forms the other side portion of each of the plurality of heat transfer fin parts (130) provided in the heat transfer structure (120). Each of the plurality of second heat transfer fin parts (195) is in close contact with each of the corresponding first heat transfer fin parts (185) provided in the first heat transfer member (181) to form one heat transfer fin part (130). The first heat transfer fin part (185) and the second heat transfer fin part (195) that are in close contact to form one heat transfer fin part (130) may be bonded by a thermally conductive adhesive.

[0040] Each of the plurality of second fusion portions (198) is formed by protruding outward from the second tube joint portion (192) between two neighboring second heat transfer fin portions (195) among the plurality of second heat transfer fin portions (195). The second fusion portion (198) is formed integrally with the two neighboring second heat transfer fin portions (195). The corresponding first fusion portion (188) and second fusion portion (198) are ultrasonically fused to form the ultrasonic fusion portion (170).

[0041] Since the second electrode joint (160) is as described above, a detailed description thereof is omitted here.

[0042] Since the second electrode member (118) is as described above, a detailed description thereof is omitted here.

[0043] The first heat transfer block (180) and the second heat transfer block (190) may have the same configuration.

[0044] FIG. 5 is a flowchart schematically illustrating a method for manufacturing a heat exchanger according to one embodiment of the present invention. A method for manufacturing a heat exchanger according to an embodiment of the present invention illustrated in FIG. 5 is for manufacturing a heat exchanger (100) having a configuration as illustrated in FIGS. 1 to 4. Referring to FIG. 5 together with FIGS. 1 to 4, the method for manufacturing a heat exchanger according to an embodiment of the present invention includes a first heat transfer block preparation step (S110) in which a first heat transfer block (180) is prepared, a second heat transfer block preparation step (S120) in which a second heat transfer block (190) is prepared, a tube preparation step (S130) in which a tube (110) is prepared, a bonding step (S140) in which each of the first heat transfer block (180) and the second heat transfer block (190) is bonded to the tube (110), and a block bonding step (S150) in which the first heat transfer block (180) and the second heat transfer block (190) are bonded.

[0045] In the first heat transfer block preparation step (S110), a first heat transfer block (180) is prepared. The first heat transfer block (180) prepared in the first heat transfer block preparation step (S110) is manufactured by an insert injection molding method. The first electrode member (117) of the first heat transfer block (180) is an insert inserted into a mold during insert injection molding, and the first heat transfer member (181) of the first heat transfer block (180) is formed by hardening a liquid composite material injected into a mold during insert injection molding.

[0046] In the second heat transfer block preparation step (S120), a second heat transfer block (190) is prepared. The second heat transfer block (190) prepared in the second heat transfer block preparation step (S120) is manufactured by insert injection molding. The second electrode member (118) of the second heat transfer block (190) is an insert inserted into a mold during insert injection molding, and the second heat transfer member (191) of the second heat transfer block (190) is formed by hardening a liquid composite material injected into a mold during insert injection molding.

[0047] The first heat transfer block (180) prepared in the first heat transfer block preparation step (S110) and the second heat transfer block (190) prepared in the second heat transfer block preparation step (S120) may be the same.

[0048] In the tube preparation step (S130), a tube (110) is prepared. After the tube (110), the first heat transfer block (180), and the second heat transfer block (190) are all prepared, a bonding step (S140) is performed.

[0049] In the bonding step (S140), the first heat transfer block (180) prepared in the first heat transfer block preparation step (S110) and the second heat transfer block (190) prepared in the second heat transfer block preparation step (S120) are each bonded to the tube (110) prepared in the tube preparation step (S130). The bonding step (S140) can be performed using a thermally conductive adhesive. That is, a heat-conductive adhesive is applied to the outer surface of the main portion (114) provided in the tube (110) and / or the inner surface of the first tube joint (182) provided in the first heat transfer member (181) of the first heat transfer block (180) and the inner surface of the second tube joint (192) provided in the second heat transfer member (191) of the second heat transfer block (190), so that the first tube joint (182) and the second tube joint (192) are bonded to the main portion (114). In the bonding step (S140), the contact portions of the first tube joint (182) and the second tube joint (192) and the contact portions of the first heat transfer fin (185) and the second heat transfer fin (195) can also be bonded by the heat-conductive adhesive. After the bonding step (S140) is performed and each of the first heat transfer block (180) and the second heat transfer block (190) is bonded to the tube (110), the block bonding step (S150) is performed.

[0050] In the block bonding step (S150), the first heat transfer block (180) and the second heat transfer block (190) are bonded. The block bonding step (S150) is performed by ultrasonically bonding a plurality of first fusion portions (188) provided in the first heat transfer block (180) and a plurality of second fusion portions (198) provided in the second heat transfer block (190). The corresponding first fusion portions (188) and second fusion portions (198) are ultrasonically bonded to form an ultrasonic fusion portion (170).

[0051] While the present invention has been described through the above examples, the present invention is not limited thereto. The above examples may be modified or altered without departing from the spirit and scope of the present invention, and those skilled in the art will recognize that such modifications and variations also fall within the scope of the present invention.

Claims

1. A tube having an inlet and an outlet formed therein and extending between the inlet and the outlet to provide a flow path for the refrigerant; and A heat transfer structure is formed by combining a first heat transfer block having a first heat transfer member and a second heat transfer block having a second heat transfer member with the tube interposed therebetween, and transferring heat between the refrigerant and an external heat exchange target fluid. The above heat transfer structure is made of a composite material including a resin material and a carbon material, The above heat transfer structure has a plurality of heat transfer fins arranged in sequence along the extension direction of the tube, and a tube connecting tube that sequentially penetrates the plurality of heat transfer fins and surrounds the tube from the outside. The first heat transfer member has a plurality of first heat transfer fins forming one side portion of each of the plurality of heat transfer fins, and a first tube joint forming one half of the tube joint, The second heat transfer member comprises a plurality of second heat transfer fins forming the other side portion of each of the plurality of heat transfer fins, and a second tube coupling portion forming the other half of the tube coupling portion. Heat exchanger.

2. In claim 1, The above tube is bonded to the first tube joint and the second tube joint by a thermally conductive adhesive. Heat exchanger.

3. In claim 1, The above heat transfer structure further comprises a plurality of ultrasonic fusion portions formed by ultrasonic fusion of the first heat transfer member and the second heat transfer member. Heat exchanger.

4. In claim 3, The above ultrasonic welding section is formed by protruding outward from the tube joint section between two adjacent heat transfer fin sections among the plurality of heat transfer fin sections. Heat exchanger.

5. In claim 4, The above ultrasonic welding part is formed integrally with the two adjacent heat transfer fin parts. Heat exchanger.

6. In claim 1, The first heat transfer block further comprises a first electrode member coupled to the first heat transfer member, The second heat transfer block further comprises a second electrode member coupled to the second heat transfer member. Heat exchanger.

7. In claim 6, The first electrode member and the second electrode member are positioned opposite each other with the tube therebetween. Heat exchanger.

8. In claim 6, The first electrode member extends so as to pass through all of the plurality of first heat transfer fins, The second electrode member extends so as to pass through all of the second heat transfer fin portions. Heat exchanger.

9. In claim 8, The first heat transfer member further includes a first electrode coupling portion that surrounds the first electrode member and is integrally connected to the plurality of first heat transfer fin portions. The second heat transfer member further includes a second electrode coupling portion that surrounds the second electrode member and is integrally connected to the plurality of second heat transfer fin portions. Heat exchanger.

10. In claim 1, The above tube further comprises a plurality of main pipes arranged in parallel, and a connecting pipe for connecting two adjacent main pipes among the plurality of main pipes so that the plurality of main pipes are continuously connected. The above tube connecting portion is a plurality corresponding to the above main portion, The above tube joint portion surrounds the main portion, Heat exchanger.

11. A first heat transfer block preparation step in which a first heat transfer block having a first heat transfer member made of a composite material including a resin material and a carbon material is prepared; A second heat transfer block preparation step in which a second heat transfer block having a second heat transfer member made of a composite material including a resin material and a carbon material is prepared; A tube preparation step in which an inlet and an outlet are formed and a tube is prepared that extends between the inlet and the outlet to provide a flow path for the refrigerant; A bonding step in which the first heat transfer member and the second heat transfer member are bonded to the tube; and A block bonding step is included in which the first heat transfer block and the second heat transfer block are bonded, The first heat transfer member has a first tube joint and a plurality of first heat transfer fins formed integrally with the first tube joint, The second heat transfer member has a second tube joint and a plurality of second heat transfer fins formed integrally with the second tube joint, The inner circumference of the first tube joint and the inner circumference of the second tube joint are each formed to correspond to half of the outer circumference of the tube, In the above bonding step, the inner circumference of the first tube joint and the inner circumference of the second tube joint are bonded to the outer circumference of the tube, so that the first tube joint and the second tube joint surround the outer circumference of the tube. Method for manufacturing a heat exchanger.

12. In claim 11, In the above bonding step, the inner circumference of the first tube joint and the inner circumference of the second tube joint are bonded to the outer circumference of the tube using a heat-conductive adhesive. Method for manufacturing a heat exchanger.

13. In claim 11, In the above block bonding step, the first heat transfer member and the second heat transfer member are ultrasonically bonded. Method for manufacturing a heat exchanger.

14. In claim 11, The first heat transfer block further comprises a first electrode member coupled to the first heat transfer member, The above first heat transfer block is manufactured by insert injection molding, The above first electrode member is an insert inserted into a mold during insert injection molding, and the above first heat transfer member is formed by hardening the composite material injected into the mold in a liquid state during insert injection molding. Method for manufacturing a heat exchanger.

15. In claim 11, The second heat transfer block further comprises a second electrode member coupled to the second heat transfer member, The above second heat transfer block is manufactured by insert injection molding, The second electrode member is an insert inserted into a mold during insert injection molding, and the second heat transfer member is formed by hardening the composite material injected into the mold in a liquid state during insert injection molding. Method for manufacturing a heat exchanger.

16. A tube having an inlet and an outlet formed therein and extending between the inlet and the outlet to provide a flow path for the refrigerant; A first heat transfer block comprising a first heat transfer member made of a composite material including a resin material and a carbon material, and a first electrode member coupled to the first heat transfer member; and A second heat transfer block comprising a second heat transfer member made of a composite material including a resin material and a carbon material, and a second electrode member coupled to the second heat transfer member, The first heat transfer member and the second heat transfer member are connected with the tube in between to form a heat transfer structure that transfers heat between the refrigerant and the external heat exchange target fluid, The above heat transfer structure comprises a plurality of heat transfer fins arranged in sequence and spaced apart from each other along the extension direction of the tube, a tube coupling tube that sequentially penetrates the plurality of heat transfer fins and surrounds the tube from the outside, and a plurality of ultrasonic fusion portions formed at a portion where the first heat transfer member and the second heat transfer member are ultrasonically fused and joined. The first heat transfer member has a plurality of first heat transfer fins forming one side portion of each of the plurality of heat transfer fins, a first tube coupling portion forming one half of the tube coupling portion, and a first fusion portion forming one half of the ultrasonic fusion portion. The second heat transfer member comprises a plurality of second heat transfer fins forming the other side portion of each of the plurality of heat transfer fins, a second tube coupling portion forming the other half of the tube coupling portion, and a second fusion portion forming one half of the ultrasonic fusion portion. The first fusion portion is formed by protruding outward from the first tube joint between two neighboring first heat transfer fin portions among the plurality of first heat transfer fin portions, and is integrally formed by being connected to the two neighboring first heat transfer fin portions. The second fusion portion is formed by protruding outward from the second tube joint between two adjacent second heat transfer fin portions among the plurality of second heat transfer fin portions, and is integrally formed by being connected to the two adjacent second heat transfer fin portions. The above ultrasonic fusion portion is formed by ultrasonic fusion of the corresponding first fusion portion and the second fusion portion, The above ultrasonic welding section is formed by protruding outward from the tube joint section between two adjacent heat transfer fin sections among the plurality of heat transfer fin sections, In the above ultrasonic welding section, the longitudinal ends of the tube joint section are spaced apart and connected to two adjacent heat transfer fin sections to form an integral part. Heat exchanger.

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