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 Application) This application claims the priority of a Chinese patent application filed on September 9, 2022 with application number 202222414865.5 and titled "Heat Exchanger", the entire content of which is incorporated into this application by reference.

[0002] The present application belongs to the technical field related to heat exchange, and particularly relates to a heat exchanger. [Background Art]

[0003] A heat exchanger mainly consists of heat exchange tubes, heat dissipation fins and headers. Headers are respectively provided at both ends of the heat exchange tubes, and are used for distributing and converging refrigerant. In order to ensure that the refrigerant in the heat exchanger is uniformly distributed in each heat exchange tube, usually a distribution tube is inserted through the header, and the distribution tube uniformly distributes the refrigerant into each heat exchange tube.

[0004] At present, the distribution pipe in conventional heat exchangers usually protrudes outward from the end of the header, so that the bent pipe portion of the distribution pipe is exposed outside the header. Therefore, during the transportation and installation of the heat exchanger, the bent pipe portion of the distribution pipe exposed outside the header is prone to damage. [Summary of the Invention]

[0005] In view of this, it is necessary to provide a heat exchanger.

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

[0007] The distribution pipe has a curved pipe section for introducing refrigerant, the curved pipe section extends from the first concentrating pipe and is provided along a direction perpendicular to the axial direction of the first concentrating pipe, the protruding portion of the curved pipe section is provided on the first concentrating pipe, the first concentrating pipe has a positioning portion, the positioning portion engages with the curved pipe section to position the distribution pipe on the first concentrating pipe.

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

[0009] In one embodiment, the positioning groove includes a first groove and a second groove, the second groove being in communication with the first groove, and the distribution pipe can be moved so as to insert the curved pipe portion into the first converging pipe along the direction of the first groove, and is positioned in the first converging pipe by the locking engagement between the second groove and the curved pipe portion.

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

[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 portion fits into the bottom of the positioning groove.

[0012] In one embodiment, the bottom of the positioning groove is provided as an arc-shaped surface and is used to align with the pipe wall of the curved pipe section.

[0013] In one embodiment, a seal cover plate is installed inside the first drainpipe, and the distribution pipe penetrates the seal cover plate and enters the first drainpipe. The distribution pipe and the seal cover plate are assembled in a sealed manner so that they surround the seal cover plate and the first drainpipe together to form an independent chamber.

[0014] In one embodiment, a buffer material is filled between the first collection pipe and the distribution pipe, and the buffer material is provided on the outside of the independent chamber.

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

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

[0017] In one embodiment, if the distance between the opening of the heat exchange pipe and the distribution pipe is defined as N, then 2 mm ≤ N ≤ 3 mm.

[0018] In one embodiment, if the inner diameter of the distribution pipe is defined as D1, then 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 converging pipe is defined as D2, then 0.2*D2 <OD1<0.5*D2である。

[0020] In one embodiment, if we define H as the distance between the inner wall of the first concentrator pipe relatively close to the heat exchange pipe and the distribution pipe, and h as the distance between the inner wall of the first concentrator pipe relatively far from the heat exchange pipe and the distribution pipe, and define OD1 as the inner diameter of the distribution pipe, then h + OD1 <Hである。

[0021] In one embodiment, if we define the bending radius of the curved pipe section as R, and define the distance between the inner wall of the first flow collector pipe that is relatively close to the heat exchange pipe and the distribution pipe as H, then R <Hである。

[0022] Details of one or more embodiments of this application are described in the accompanying drawings and the following description. Other features, purposes and advantages of this application will become apparent from the specification, drawings and claims. [Brief explanation of the drawing]

[0023] In order to better describe and explain the embodiments and / or examples of the invention disclosed in the present specification, reference may be made to one or more drawings. Additional details or examples used to describe the drawings should not be construed as limiting the scope of any of the disclosed invention, the embodiments and / or examples described herein, and the best mode of these inventions understood herein.

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

[0025] 100 Heat exchanger, 10 First header, 11 Positioning portion, 111 Positioning groove, 1111 First groove portion, 1112 Second groove portion, 1110 Groove bottom, 12 Seal cover plate, 20 Second header, 30 Heat exchange tube, 31 Tube opening, 40 Distribution tube, 41 Curved tube portion, 50 Radiating fin, 60 Buffer member, 61 Expanded polyethylene, 101 Independent chamber.

Mode for Carrying Out the Invention

[0026] Referring to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. It is obvious that the described embodiments are only some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative effort shall all fall within the protection scope of the present application.

[0027] It should be explained that when a component is described as being "placed" on another component, it may be directly placed on the other component, or there may be an intervening component. When one component is considered to be "provided" on another component, it may be directly provided on the other component, or there may be an intervening component. When one component is considered to be "fixed" to another component, it may be directly fixed to the other component, or there may be an intervening component.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in which this application pertains. The terms used in the specification of this application are for the sole purpose of describing specific embodiments and are not intended to limit this application. The terms “and / or” used herein include any and all combinations of one or more of the related enumerated items.

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

[0030] The distribution pipe 40 is attached to the first concentrator pipe 10, and the multiple heat exchange pipes 30 are provided between the first concentrator pipe 10 and the second concentrator pipe 20, and are connected to the distribution pipe 40 and the second concentrator pipe 20, respectively. As a result, when the heat exchanger 100 is in operation, the refrigerant is uniformly introduced into the heat exchange pipes 30 under the distribution of the distribution pipe 40, and then flows from the heat exchange pipes 30 to the second concentrator pipe 20, thereby achieving heat exchange with the outside environment using the refrigerant as it passes through the heat exchange pipes 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 standard techniques in conventional heat exchangers 100 and will not be explained in detail here. It is obvious that heat dissipation fins 50 may be attached to the heat exchange pipes 30 to improve the heat exchange effect when the heat exchanger 100 is in operation, but this will not be explained in detail here.

[0031] In this embodiment, the distribution pipe 40 has a curved pipe section 41 for introducing refrigerant. The curved pipe section 41 extends from the first concentrator pipe 10 and is provided along a direction perpendicular to the axial direction of the first concentrator pipe 10, with the protruding portion of the curved pipe section 41 located on the first concentrator pipe 10. In other words, by providing the end of the first concentrator pipe 10 closest to the curved pipe section 41 on the outside of the distribution pipe 40, the first concentrator pipe 10 can protect the distribution pipe 40 from damage during the transportation and installation of the heat exchanger 100. It should be noted that the axial length of the portion of the first concentrator pipe 10 that protrudes from the curved pipe section 41 in the distribution pipe 40 can be specifically set according to the requirements for use, but this will not be explained in detail here.

[0032] The first concentrating pipe 10 is provided with a positioning section 11, which acts on the distribution pipe 40 to position the distribution pipe 40 on the first concentrating pipe 10. In other words, the orientation of the distribution pipe 40 when assembling it to the first concentrating pipe 10 can be fixed by the engagement between the positioning section 11 and the distribution pipe 40, that is, the mounting position of the distribution pipe 40 on the first concentrating pipe 10 can be positioned, and the requirements for assembly and communication between the distribution pipe 40 and the multiple heat exchange pipes 30 can be easily met.

[0033] In this embodiment, the positioning section 11 is a positioning groove 111 provided in the first converging pipe 10. The distribution pipe 40 can be positioned in the first converging pipe 10 by locking the curved pipe section 41 with the positioning groove 111. Furthermore, the positioning section 11 is specifically installed in the first converging pipe 10, eliminating the need to use an external positioning jig to position the orientation in which the distribution pipe 40 is assembled in the first converging pipe 10, thereby simplifying the structure and reducing costs.

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

[0035] In this embodiment, the positioning groove 111 is provided as an L-shaped structure, in other words, the angle formed between the first groove portion 1111 and the second groove portion 1112 in the positioning groove 111 is 90°. Furthermore, it has the role of specifically realizing the structural installation of the positioning groove 111, simplifying the structure, and facilitating the locking and mounting of the distribution pipe 40 into the second groove portion 1112 of the positioning groove 111. It should be explained that in the positioning groove 111 of this application, the first groove portion 1111 is provided along the axial direction of the distribution pipe 40, and in this way, it becomes easy to insert the curved pipe portion 41 of the distribution pipe 40 into the first groove portion 1111, and the stability of positioning the distribution pipe 40 when the second groove portion 1112 and the curved pipe portion 41 are locked and engaged can be improved. Of course, the angle between the first groove 1111 and the second groove 1112 is not limited to 90°, and those skilled in the art can specifically set the angle between the first groove 1111 and the second groove 1112 according to the requirements of use, but this will not be explained in detail here.

[0036] It should be noted that a seal cover plate 12 is installed in the first header 10 of the present application. The distribution pipe 40 penetrates the seal cover plate 12 and enters the first header 10. The distribution pipe 40 and the seal cover plate 12 are assembled in a sealed manner such that the seal cover plate 12 and the first header 10 together enclose to form an independent chamber 101, which meets the usage requirements for circulating flow of refrigerant when the heat exchanger 100 operates.

[0037] As shown in FIG. 5 and FIG. 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 excessively large. Therefore, to facilitate liquid separation, D1>5 mm is set in this embodiment. This design facilitates liquid flow and facilitates rapid and uniform liquid separation of the liquid separation pipe.

[0038] It can be understood that in other embodiments, 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 10 is defined as D2. If the outer diameter dimension of the distribution pipe 40 is too large, it becomes difficult to assemble the distribution pipe 40 into the first header 10. Therefore, to facilitate insertion and assembly of the distribution pipe 40 and the first header 10, 0.2*D2 < OD1 < 0.5*D2 is set in this embodiment. It can be understood that in other embodiments, as long as the distribution pipe 40 can finally be inserted and assembled into the first header 10, the size relationship between OD1 and D2 may be adjusted as appropriate, for example, OD1=0.5*D2 or OD1=0.2*D2, and they will not be enumerated one by one or described in detail herein.

[0040] As shown in FIG. 6, define H as the distance between the distribution pipe and the inner wall of the first header that is relatively close to the heat exchange tubes, define h as the distance between the distribution pipe and the inner wall of the first header that is relatively far from the heat exchange tubes, and define OD1 as the inner diameter dimension of the distribution pipe, then h+OD1<H. In this way, sufficient installation space can be provided for the curved pipe section of the distribution pipe.

[0041] As shown in FIG. 6, define R as the bending radius of the curved pipe section, and define H as the distance between the distribution pipe and the inner wall of the first header that is relatively close to the heat exchange tubes. To ensure that the curved pipe section can smoothly enter the first header, R<H is set, and two flat segments of the distribution pipe adjacent to the curved pipe section are respectively fitted to and installed on the first header and the sealing cover plate, thereby facilitating the installation and positioning of the distribution pipe.

[0042] Referring to FIG. 7, further, in order to enable the distribution pipe to distribute liquid more uniformly, in one embodiment, define N as the distance between the pipe orifice of the heat exchange tube and the distribution pipe, and 2 mm≤N≤3 mm. This design facilitates the distribution pipe to uniformly distribute the refrigerant into a plurality of different heat exchange tubes.

[0043] In other words, a plurality of distribution holes are generally drilled in the distribution pipe, and the pipe orifice of the heat exchange tube may be inserted into the heat exchange tube through the distribution hole, or may be located in the first header and maintain a certain distance from the distribution pipe.

[0044] Specifically, as shown in FIG. 6, when the pipe orifice of the heat exchange tube is inserted into the heat exchange tube through the distribution hole, the refrigerant in the distribution pipe can be directly distributed from the distribution pipe into each heat exchange tube. As shown in FIG. 7, when the pipe orifice of the heat exchange tube is located in the first header and maintains a certain distance N from the distribution pipe, the refrigerant in the distribution pipe can overflow from the distribution hole into the first header and then be distributed into each heat exchange tube.

[0045] As shown in Figures 3 and 4, the structure, configuration, and operating principle of the heat exchanger 100 provided in the second embodiment of this application are basically the same as those of the heat exchanger 100 in the first embodiment of this application. The difference between the two is that the positioning groove 111 is provided as a V-shaped structure, and the distribution pipe 40 can be fitted into the groove bottom 1110 of the positioning groove 111 by linking the curved pipe portion 41. In this embodiment, the heat exchanger 100 utilizes the feature of a large opening diameter in the V-shaped structure when assembling the distribution pipe 40 to the first converging pipe 10. In this way, problems such as 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 to the positioning groove 111 can be effectively avoided, and the distribution pipe 40 can be easily locked and installed in the positioning groove 111.

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

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

[0048] For example, the buffer member 60 in this embodiment is provided as foamed polyethylene 61. Thus, when specifically realizing one embodiment of the buffer member 60 and assembling the distribution pipe 40 and the first concentrating pipe 10, the foamed polyethylene 61 is first set in the distribution pipe 40, and then the distribution pipe 40 can be inserted into the first concentrating pipe 10.

[0049] As described above, the heat exchanger 100 of this application, by providing the end of the first converging pipe 10 on the outside of the distribution pipe 40, can protect the distribution pipe 40 from damage during the transportation and installation process of the heat exchanger 100, and at the same time, the heat exchanger 100 can use the positioning groove 111 provided in the first converging pipe 10 to position the assembly of the distribution pipe 40 to the first converging pipe 10, thereby simplifying the structure and reducing costs, and the structural installation of the buffer member 60 can provide a vibration damping effect during the assembly of the distribution pipe 40 and the first converging pipe 10.

[0050] Each of the technical features of the above embodiments can be combined in any way, and for the sake of brevity, not all possible combinations of each technical feature in the above embodiments are described. However, as long as these combinations of technical features are inconsistent, they should all be considered to fall within the scope described herein.

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

Claims

1. A heat exchanger comprising a first collector pipe and a distribution pipe, wherein a portion of the distribution pipe is inserted into the first collector pipe along the axial direction of the first collector pipe, The distribution pipe has a curved pipe section for introducing refrigerant, the curved pipe section extends from the first collection pipe and is provided along a direction perpendicular to the axial direction of the first collection pipe, the projection of the curved pipe section is located in the first collection pipe, the first collection pipe has a positioning section, the positioning section engages with the curved pipe section to position the distribution pipe in the first collection pipe, A seal cover plate is installed inside the first drainage pipe, and the distribution pipe penetrates the seal cover plate and enters the first drainage pipe. The distribution pipe and the seal cover plate are assembled in a sealed manner such that they surround the seal cover plate and the first collection pipe together to form an independent chamber. A heat exchanger in which a buffering member is filled between the first flow collector pipe and the distribution pipe, and the buffering member is provided on the outside of the independent chamber.

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

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

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

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

6. The heat exchanger according to claim 5, wherein the bottom of the positioning groove is provided as an arc-shaped surface and is used to align with the pipe wall of the curved pipe section.

7. The heat exchanger according to claim 1, wherein the buffer member is provided as foamed polyethylene.

8. The heat exchanger according to claim 1, further comprising a second flow collector and a plurality of heat exchange tubes, wherein the plurality of heat exchange tubes are provided between the first flow collector and the second flow collector and are in communication with the distribution pipe and the second flow collector, respectively.

9. The heat exchanger according to claim 8, wherein the distance between the opening of the heat exchange tube and the distribution pipe is defined as N, and 2 mm ≤ N ≤ 3 mm.

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

11. 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 collection pipe is defined as D2, such that 0.2 * D2 < OD1 < 0.5 * D2.

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

13. The heat exchanger according to claim 1, wherein R is defined as the bending radius of the curved pipe section, and H is defined as the distance between the inner wall of the first flow collector pipe that is relatively close to the heat exchange pipe and the distribution pipe, such that R < H.

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