heat exchanger

Abstract

A heat exchanger (100) including a first collection pipe (10) and a distribution pipe (40), wherein the distribution pipe (40) has a curved pipe section (41) for introducing a refrigerant, the curved pipe section (41) extends from the first collection pipe (10) and is provided along a direction perpendicular to the axial direction of the first collection pipe (10), a protruding section of the curved pipe section (41) is located on the first collection pipe (10), and the first collection pipe (10) has a positioning section (11), which is engaged with the curved pipe section (41) to position the distribution pipe (40) to the first collection pipe (10).

Description

[Technical Field]

[0001] (Related Applications) This application claims priority to a Chinese patent application bearing application number 202222414865.5, filed on September 9, 2022, and entitled "Heat Exchanger," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of heat exchange, and more particularly to heat exchangers. [Background technology]

[0003] A heat exchanger mainly consists of heat exchange tubes, heat dissipation fins, and collection tubes, and each heat exchange tube has a collection tube at each end for distributing and merging the refrigerant. To ensure that the refrigerant in the heat exchanger is distributed evenly within each heat exchange tube, a distribution tube is usually inserted into the collection tube to distribute the refrigerant evenly within each heat exchange tube.

[0004] Currently, in conventional heat exchangers, the distribution pipes usually protrude outward from the end of the collecting pipe, so that the bent pipe sections of the distribution pipes are exposed to the outside of the collecting pipe, which makes the bent pipe sections of the distribution pipes easily damaged during transportation and installation of the heat exchanger. Summary of the Invention

[0005] In view of this, there is a need to provide a heat exchanger.

[0006] The heat exchanger includes a first collecting pipe and a distribution pipe, and a portion of the distribution pipe is inserted into the first collecting pipe along the axial direction of the first collecting pipe.

[0007] The distribution pipe has a curved pipe section for introducing refrigerant, the curved pipe section extending from the first collection pipe and arranged along a direction perpendicular to the axial direction of the first collection pipe, the protrusion of the curved pipe section being arranged on the first collection pipe, and the first collection pipe having a positioning section that engages with the curved pipe section to position the distribution pipe to the first collection pipe.

[0008] In one embodiment, the positioning portion is a positioning groove provided in the first flow collecting pipe, and the distribution pipe is positioned on the first flow collecting pipe by locking engagement between the curved pipe portion and the positioning groove.

[0009] In one embodiment, the positioning groove includes a first groove portion and a second groove portion, the second groove portion is connected to the first groove portion, and the distribution pipe can be moved so that the curved pipe portion is inserted into the first flow collecting pipe along the direction of the first groove portion, and is positioned in the first flow collecting pipe by locking engagement between the second groove portion and the curved pipe portion.

[0010] In one embodiment, the depth direction of the second groove portion is perpendicular to the depth direction of the first groove portion.

[0011] In one embodiment, the positioning groove is provided as a V-shaped structure, and the distribution pipe can be moved so that the curved pipe section fits into the groove bottom of the positioning groove.

[0012] In one embodiment, the groove bottom of the positioning groove is formed as an arcuate surface, which is used to align with the pipe wall of the curved pipe section.

[0013] In one embodiment, a sealing cover plate is mounted within the first collecting pipe, and the distribution pipe passes through the sealing cover plate and into the first collecting pipe, and the distribution pipe and the sealing cover plate are sealed and assembled together so that the sealing cover plate and the first collecting pipe together surround each other to form an independent chamber.

[0014] In one embodiment, a buffer material is filled between the first collecting pipe and the distributing pipe, and the buffer material is provided outside the independent chamber.

[0015] In one embodiment, the cushioning material is provided as foamed polyethylene.

[0016] In one embodiment, the system further includes a second collecting pipe and a plurality of heat exchange tubes, the plurality of heat exchange tubes being disposed between the first collecting pipe and the second collecting pipe and being respectively connected to the distribution pipe and the second collecting pipe.

[0017] In one embodiment, the distance between the mouth of the heat exchange tube and the distribution pipe is defined as N, and the relationship is 2 mm≦N≦3 mm.

[0018] In one embodiment, the inner diameter of the distribution pipe is defined as D1, and D1>5 mm.

[0019] In one embodiment, if the outer diameter of the distribution pipe is defined as OD1 and the inner diameter of the first collecting pipe is defined as D2, then 0.2*D2 <OD1<0.5*D2である。

[0020] In one embodiment, the distance between the inner wall of the first collecting pipe that is relatively close to the heat exchange tube and the distribution pipe is defined as H, the distance between the inner wall of the first collecting pipe that is relatively far from the heat exchange tube and the distribution pipe is defined as h, and the inner diameter of the distribution pipe is defined as OD1. <Hである。

[0021] In one embodiment, the bending radius of the curved pipe portion is defined as R, and the distance between the inner wall of the first collecting pipe, which is relatively close to the heat exchange pipe, and the distribution pipe is defined as H. <Hである。

[0022] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will become apparent from the description, drawings, and claims. [Brief explanation of the drawings]

[0023] To better describe and explain the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more drawings. Any additional details or examples used to illustrate the drawings should not be considered as limiting the scope of any of the disclosed inventions, the embodiments and / or examples described herein, and the best mode of these inventions as understood herein.

[0024] [Figure 1] FIG. 1 is a structural schematic diagram of a heat exchanger provided in an embodiment of the present application. [Figure 2] FIG. 2 is an enlarged view of a portion P in FIG. [Figure 3] FIG. 1 is a structural schematic diagram of a heat exchanger provided in an embodiment of the present application. [Figure 4] FIG. 4 is an enlarged view of a portion Q in FIG. [Figure 5] FIG. 1 is a structural schematic diagram of a heat exchanger provided in an embodiment of the present application. [Figure 6] FIG. 6 is an enlarged view of the R portion in FIG. 5. [Figure 7] FIG. 2 is a partial structural schematic diagram of a heat exchanger provided in one embodiment of the present application.

[0025] 100 heat exchanger, 10 first collecting pipe, 11 positioning portion, 111 positioning groove, 1111 first groove portion, 1112 second groove portion, 1110 groove bottom, 12 seal cover plate, 20 second collecting pipe, 30 heat exchange pipe, 31 pipe mouth, 40 distribution pipe, 41 curved pipe portion, 50 heat dissipation fin, 60 buffer member, 61 foamed polyethylene, 101 independent chamber. DETAILED DESCRIPTION OF THE INVENTION

[0026] The technical aspects of the embodiments of the present application are described below clearly and completely with reference to the drawings in the embodiments of the present application, but it is clear that the described embodiments are only a part of the embodiments of the present application, and are not all of the embodiments. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the protection scope of the present application.

[0027] It should be understood that when an element is "disposed on" another element, it may be disposed directly on the other element, or there may be intervening elements. When an element is considered to be "disposed on" another element, it may be disposed directly on the other element, or there may be intervening elements. When an element is considered to be "secured to" another element, it may be secured directly to the other element, or there may be intervening elements.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing particular embodiments only and are not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] As shown in FIGS. 1 and 2, a heat exchanger 100 provided in the first embodiment of the present application includes a first collecting pipe 10, a second collecting pipe 20, a plurality of heat exchange pipes 30, and a distribution pipe 40.

[0030] The distribution pipe 40 is attached to the first collecting pipe 10, and a plurality of heat exchange tubes 30 are disposed between the first collecting pipe 10 and the second collecting pipe 20 and are connected to the distribution pipe 40 and the second collecting pipe 20, respectively. When the heat exchanger 100 is operating, the refrigerant is uniformly introduced into the heat exchange tubes 30 under distribution by the distribution pipe 40 and then flows from the heat exchange tubes 30 to the second collecting pipe 20, and the refrigerant exchanges heat with the external environment while passing through the heat exchange tubes 30. It should be noted that the specific structure of the distribution pipe 40 and the operating principle of how the refrigerant is distributed are both conventional techniques used in conventional heat exchangers 100 and will not be described in detail here. Naturally, heat dissipation fins 50 may be attached to the heat exchange tubes 30 to improve the heat exchange effect when the heat exchanger 100 is operating, but this will not be described in detail here.

[0031] In this embodiment, the distribution pipe 40 has a curved pipe section 41 through which the refrigerant is introduced, and the curved pipe section 41 extends from the first flow collecting pipe 10 and is arranged along a direction perpendicular to the axial direction of the first flow collecting pipe 10, with the protruding section of the curved pipe section 41 located on the first flow collecting pipe 10. In other words, in this embodiment, the end of the first flow collecting pipe 10 close to the curved pipe section 41 is arranged outside the distribution pipe 40, so that the first flow collecting pipe 10 can play a role in protecting the distribution pipe 40 from damage during transportation and installation of the heat exchanger 100. It should be noted that the axial length of the portion of the first flow collecting pipe 10 that protrudes from the curved pipe section 41 of the distribution pipe 40 can be specifically set according to usage requirements, but this will not be described in detail here.

[0032] The first flow collecting pipe 10 is provided with a positioning portion 11, which acts on the distribution pipe 40 to position the distribution pipe 40 on the first flow collecting pipe 10. In other words, the orientation of the distribution pipe 40 when assembling it to the first flow collecting pipe 10 can be fixed by the engagement between the positioning portion 11 and the distribution pipe 40; that is, the attachment position of the distribution pipe 40 to the first flow collecting pipe 10 can be positioned, facilitating the assembly of the distribution pipe 40 and multiple heat exchange tubes 30 and the use requirements for communication.

[0033] The positioning portion 11 in this embodiment is a positioning groove 111 provided in the first flow collection pipe 10, and the distribution pipe 40 can be positioned on the first flow collection pipe 10 by engaging the curved pipe portion 41 with the positioning groove 111.Furthermore, this specifically realizes the structural installation of the positioning portion 11 on the first flow collection pipe 10, avoids the need to use an external positioning jig to position the orientation of the distribution pipe 40 when assembling it to the first flow collection pipe 10, simplifies the structure, and reduces costs.

[0034] Illustratively, the positioning groove 111 includes a first groove portion 1111 and a second groove portion 1112, the first groove portion 1111 being connected to the second groove portion 1112, and the distribution pipe 40 can be moved so that the curved pipe portion 41 is inserted into the first flow collecting pipe 10 along the direction of the first groove portion 1111, and is positioned in the first flow collecting pipe 10 by the locking engagement between the second groove portion 1112 and the curved pipe portion 41. In other words, when the distribution pipe 40 is attached to the first flow collecting pipe 10, the curved pipe portion 41 of the distribution pipe 40 is inserted along the first groove portion 1111, and then directed toward the second groove portion 1112, and can be positioned by utilizing the locking engagement between the second groove portion 1112 and the curved pipe portion 41. It should be noted that the groove widths of the first groove portion 1111 and the second groove portion 1112 are specifically set to match the outer pipe diameter of the distribution pipe 40.

[0035] The positioning groove 111 in this embodiment is configured as an L-shaped structure, in other words, the included angle formed between the first groove portion 1111 and the second groove portion 1112 of the positioning groove 111 is 90°, which further serves to concretely realize the structural installation of the positioning groove 111, simplify the structure, and facilitate the locking and installation of the distribution pipe 40 into the second groove portion 1112 of the positioning groove 111. It should be noted that the first groove portion 1111 of the positioning groove 111 in the present application is arranged along the axial direction of the distribution pipe 40, which makes it easy to insert the curved pipe portion 41 of the distribution pipe 40 into the first groove portion 1111, and improves the stability of positioning the distribution pipe 40 when the curved pipe portion 41 is locked and engaged with the second groove portion 1112. Of course, the included angle between the first groove portion 1111 and the second groove portion 1112 is not limited to 90°, and those skilled in the art can specifically set the included angle between the first groove portion 1111 and the second groove portion 1112 according to usage requirements, but this will not be described in detail here.

[0036] It should be noted that a seal cover plate 12 is attached inside the first header pipe 10 of the present application. The distribution pipe 40 penetrates through the seal cover plate 12 and enters the first header pipe 10. The distribution pipe 40 and the seal cover plate 12 are sealed and assembled so that the seal cover plate 12 and the first header pipe 10 together surround and form an independent chamber 101, meeting the usage requirements of the refrigerant circulation during the operation of the heat exchanger 100.

[0037] As shown in FIGS. 5 and 6, the inner diameter dimension of the distribution pipe 40 is defined as D1. If the inner diameter dimension of the distribution pipe 40 is too small, the liquid separation resistance will become too large. Therefore, in order to facilitate liquid separation, in this embodiment, D1>5 mm. With such a design, liquid flow becomes easy, and rapid and uniform liquid separation of the liquid separation pipe becomes easy.

[0038] In other embodiments, it can be understood that the inner diameter dimension of D1 is not limited, and D1 may be 5 mm or less as long as it does not affect the normal liquid separation of the liquid separation pipe.

[0039] As shown in FIG. 6, the outer diameter dimension of the distribution pipe 40 is defined as OD1, and the inner diameter dimension of the first header pipe 10 is defined as D2. If the outer diameter dimension of the distribution pipe 40 is too large, it will be difficult to assemble the distribution pipe 40 into the first header pipe 10. Therefore, in order to facilitate the insertion and assembly of the distribution pipe 40 and the first header pipe 10, in this embodiment, 0.2*D2 < OD1 < 0.5*D2. As long as the distribution pipe 40 can finally be inserted and assembled into the first header pipe 10, in other embodiments, the size relationship between OD1 and D2 can be appropriately adjusted, for example, OD1 = 0.5*D2 or OD1 = 0.2*D2, etc., but they will not be listed and detailed one by one here.

[0040] As shown in Fig. 6, the distance between the inner wall relatively close to the heat exchange pipe 30 of the first header pipe 10 and the distribution pipe 40 is defined as H, the distance between the inner wall relatively far from the heat exchange pipe 30 of the first header pipe 10 and the distribution pipe 40 is defined as h, and when the inner diameter dimension of the distribution pipe 40 is defined as OD1, h + OD1 < H. In this way, sufficient installation space can be provided for the curved pipe portion 41 of the distribution pipe 40.

[0041] As shown in Fig. 6, the bending radius of the curved pipe portion 41 is defined as R, and the distance between the inner wall relatively close to the heat exchange pipe 30 of the first header pipe 10 and the distribution pipe 40 is defined as H. To ensure that the curved pipe portion 41 can smoothly enter the first header pipe 10, R < H, and two flat segments close to the curved pipe portion 41 of the distribution pipe 40 are respectively attached and engaged with the first header pipe 10 and the seal cover plate 12 to facilitate the installation and positioning of the distribution pipe 40.

[0042] Referring to Fig. 7, further, in order to enable the distribution pipe 40 to distribute the liquid more uniformly, in one embodiment, the distance between the pipe opening 31 of the heat exchange pipe 30 and the distribution pipe 40 is defined as N, and 2 mm ≤ N ≤ 3 mm. With such a design, it is easy for the distribution pipe 40 to uniformly distribute the refrigerant into a plurality of different heat exchange pipes 30.

[0043]

[0044] Specifically, as shown in Fig. 6, when the pipe opening 31 of the heat exchange pipe 30 is inserted into the heat exchange pipe 30 through the distribution holes, the refrigerant in the distribution pipe 40 can be directly distributed from the distribution pipe 40 into each heat exchange pipe 30. As shown in Fig. 7, when the pipe opening 31 of the heat exchange pipe 30 is located in the first header pipe 10 and maintains a certain distance N from the distribution pipe 40, the refrigerant in the distribution pipe 40 can overflow from the distribution holes into the first header pipe 10 and then be distributed into each heat exchange pipe 30.

[0045] As shown in FIGS. 3 and 4 , the structure, configuration, and operating principle of the heat exchanger 100 provided in the second embodiment of the present application are basically the same as those of the heat exchanger 100 in the first embodiment of the present application. The difference between the two is that the positioning groove 111 is formed in a V-shape, and the curved pipe section 41 of the distribution pipe 40 can be fitted into the groove bottom 1110 of the positioning groove 111 in conjunction with the positioning groove 111. The heat exchanger 100 of this embodiment takes advantage of the large diameter of the opening in the V-shape when assembling the distribution pipe 40 to the first collecting pipe 10. This effectively avoids the problem of the inner wall of the positioning groove 111 colliding with and damaging the outer wall of the distribution pipe 40 during the process of assembling the distribution pipe 40 into the positioning groove 111, and makes it easier to lock and install the distribution pipe 40 in the positioning groove 111.

[0046] The groove bottom 1110 of the positioning groove 111 is formed as an arc-shaped surface and is used to align with the pipe wall of the curved pipe section 41.In this way, the groove bottom 1110 of the positioning groove 111 improves the degree of adhesion between the curved pipe section 41 and the groove bottom 1110 when the curved pipe section 41 is clamped, and the stability of assembling the curved pipe section 41 to the groove bottom 1110 of the positioning groove 111 can be further improved.

[0047] As shown in FIGS. 5 and 6 , the structure, configuration, and operating principle of the heat exchanger 100 provided in the third embodiment of the present application are basically the same as those of the heat exchanger 100 in the second embodiment of the present application. The difference between the two is that in this embodiment, a buffer member 60 is placed between the first collecting pipe 10 and the distribution pipe 40, and the buffer member 60 is located outside the independent chamber 101. When the heat exchanger 100 in this embodiment is operating, the structural features of the buffer member 60 can be used to provide a vibration damping effect to the assembly between the distribution pipe 40 and the first collecting pipe 10, thereby ensuring the stability of the assembly between the distribution pipe 40 and the sealing cover plate 12, and thus preventing refrigerant leakage from the independent chamber 101.

[0048] For example, the buffer member 60 in this embodiment is provided as a foamed polyethylene 61, and thus, one embodiment of the buffer member 60 is specifically realized. When assembling the distribution pipe 40 and the first collecting pipe 10, the foamed polyethylene 61 can be first set on the distribution pipe 40, and then the distribution pipe 40 can be inserted into the first collecting pipe 10.

[0049] As described above, in the heat exchanger 100 of the present application, the end of the first collection pipe 10 is located outside the distribution pipe 40, so that the first collection pipe 10 can protect the distribution pipe 40 from damage during transportation and installation of the heat exchanger 100. At the same time, the heat exchanger 100 uses the positioning groove 111 provided on the first collection pipe 10 to position the distribution pipe 40 when assembled to the first collection pipe 10, thereby simplifying the structure and reducing costs, and the structural installation of the buffer member 60 can provide a vibration damping effect when assembling the distribution pipe 40 and the first collection pipe 10.

[0050] The technical features of the above embodiments can be combined in any way, and for the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but as long as there is no contradiction in the combination of these technical features, any combination should be considered to be within the scope described in this specification.

[0051] The above examples merely illustrate some embodiments of the present application, and although the descriptions are relatively specific and detailed, they should not be understood as limiting the scope of the claims of the present application. It should be noted that those skilled in the art can make some modifications and improvements without departing from the spirit of the present application, and all of these are within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be determined according to the scope of the attached claims.

Claims

1. A heat exchanger including a first collecting pipe and a distribution pipe, wherein a portion of the distribution pipe is inserted into the first collecting pipe along an axial direction of the first collecting pipe, a heat exchanger, wherein the distribution pipe has a curved pipe section for introducing a refrigerant, the curved pipe section extending from the first collecting pipe and arranged along a direction perpendicular to the axial direction of the first collecting pipe, the protruding section of the curved pipe section being positioned on the first collecting pipe, and the first collecting pipe having a positioning section that engages with the curved pipe section to position the distribution pipe to the first collecting pipe.

2. 2. The heat exchanger according to claim 1, wherein the positioning portion is a positioning groove provided in the first collecting pipe, and the distribution pipe is positioned to the first collecting pipe by locking engagement between the curved pipe portion and the positioning groove.

3. 3. The heat exchanger according to claim 2, wherein the positioning groove includes a first groove portion and a second groove portion, the second groove portion is connected to the first groove portion, the distribution pipe can be moved so that the curved pipe portion is inserted into the first collecting pipe along the direction of the first groove portion, and the distribution pipe is positioned in the first collecting pipe by locking engagement between the second groove portion and the curved pipe portion.

4. The heat exchanger according to claim 3 , wherein a depth direction of the second groove portion is perpendicular to a depth direction of the first groove portion.

5. 3. The heat exchanger according to claim 2, wherein the positioning groove is provided as a V-shaped structure, and the distribution pipe can be moved so that the curved pipe section fits into the groove bottom of the positioning groove.

6. 6. The heat exchanger according to claim 5, wherein the groove bottom of the positioning groove is formed as an arcuate surface, and is used for matching with the pipe wall of the curved pipe section.

7. a seal cover plate is attached to the inside of the first collecting pipe, and the distribution pipe penetrates the seal cover plate and enters the first collecting pipe; 2. The heat exchanger of claim 1, wherein the distribution pipe and the seal cover plate are sealingly assembled such that the seal cover plate and the first collector pipe together surround and form an independent chamber.

8. 8. The heat exchanger according to claim 7, wherein a buffer member is filled between the first collecting pipe and the distribution pipe, and the buffer member is provided outside the independent chamber.

9. 9. The heat exchanger of claim 8, wherein the cushioning member is provided as foamed polyethylene.

10. 2. The heat exchanger according to claim 1, further comprising a second collecting pipe and a plurality of heat exchange tubes, the plurality of heat exchange tubes being provided between the first collecting pipe and the second collecting pipe and being in communication with the distribution pipe and the second collecting pipe, respectively.

11. 11. The heat exchanger according to claim 10, wherein, when a distance between the opening of the heat exchange tube and the distribution pipe is defined as N, 2 mm≦N≦3 mm.

12. The heat exchanger according to claim 1 , wherein the inner diameter of the distribution pipe is defined as D1 and the inner diameter is greater than 5 mm.

13. 2. The heat exchanger according to claim 1, wherein the outer diameter of the distribution pipe is defined as OD1 and the inner diameter of the first collecting pipe is defined as D2, and the relationship is 0.2*D2<OD1<0.5*D2.

14. 2. The heat exchanger according to claim 1, wherein the distance between the distribution pipe and an inner wall of the first collecting pipe that is relatively close to the heat exchange tubes is defined as H, the distance between the distribution pipe and an inner wall of the first collecting pipe that is relatively far from the heat exchange tubes is defined as h, and the inner diameter of the distribution pipe is defined as OD1, and h + OD1 < H.

15. 2. The heat exchanger according to claim 1, wherein R<H is satisfied when the bending radius of the curved pipe portion is defined as R and the distance between the inner wall of the first collecting pipe that is relatively close to the heat exchange pipe and the distribution pipe is defined as H.

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