Heat exchanger

Abstract

The present application provides a heat exchanger, the heat exchanger includes a heat exchange tube group, the heat exchange tube group includes a flat tube and a connection joint, the flat tube includes a first flat pipe segment, a bent pipe segment and a second flat pipe segment, the first flat pipe segment, the bent pipe segment and the second flat pipe segment are connected in sequence to form a U-shaped tube structure, the flat tube is a plurality of flat tubes, the plurality of flat tubes are spaced apart, and a connection joint is provided between two adjacent flat tubes, where the connection joint has a first connection port and a second connection port that are mutually communicated, the first connection port is connected to the first flat pipe segment, the second connection port is connected to the second flat pipe segment, the connection joint is a U-shaped joint, and the first connection port and the second connection port are respectively located at both ends of the U-shaped joint. The technical aspects provided in the present application can solve the technical problem that the production and installation of the flow collecting tube of the heat exchanger in the prior art is complicated.

Description

[Technical field]

[0001] This application claims priority to a patent application filed with the China National Intellectual Property Office on May 31, 2021, bearing application number 202121202521.7 and titled "Heat Exchanger."

[0002] TECHNICAL FIELD This application relates to the field of heat exchangers, and more particularly to heat exchangers. [Background technology]

[0003] At present, the microchannel heat exchanger in the prior art generally includes a flat tube, an inlet collecting tube and an outlet collecting tube, the flat tube is plural, the plural flat tubes are spaced apart, the inlet ends of the plural flat tubes are all connected to the inlet collecting tube, and the outlet ends of the plural flat tubes are all connected to the outlet collecting tube. When adopting the above-mentioned structure, it is generally necessary that the inlet collecting tube and the outlet collecting tube are both provided with a number of connections, and the multiple connections are respectively connected to the inlet collecting tube and the outlet collecting tube, so as to form a complete heat exchanger structure.

[0004] However, in the production of the above-mentioned microchannel heat exchanger, both the inlet and outlet flow collector tubes need to be provided with multiple connections, which complicates the production process of the inlet and outlet flow collector tubes and presents a certain degree of difficulty in installation. Summary of the Invention

[0005] The main objective of the present application is to provide a heat exchanger to solve the technical problem that the production and installation of the flow collecting tube of the heat exchanger in the prior art is complicated.

[0006] In order to achieve the above-mentioned objectives, the present application provides a heat exchanger, the heat exchanger including a heat exchange tube group, the heat exchange tube group including a flat tube and a connecting joint, the flat tube including a first flat pipe segment, a bent pipe segment and a second flat pipe segment, the first flat pipe segment, the bent pipe segment and the second flat pipe segment are connected in sequence to form a U-shaped pipe structure, the flat tubes are multiple, the multiple flat tubes are spaced apart, and two adjacent flat tubes are connected by a connecting joint.

[0007] Further, the connection joint includes a first connection port and a second connection port which are connected to each other, the first connection port is connected to the first flat pipe segment, the second connection port is connected to the second flat pipe segment, the connection joint is a U-shaped joint, and the first connection port and the second connection port are respectively located at both ends of the U-shaped joint.

[0008] Further, the plurality of flat tubes are uniformly arranged in rows to form a flat tube bank structure, the flat tube bank structure including a plurality of flat tube rows spaced apart along a first preset direction, the flat tube rows including a plurality of flat tubes spaced apart along a second preset direction, the first preset direction and the second preset direction being arranged at a predetermined angle, wherein a connecting joint is provided between two adjacent flat tubes in each row of flat tube rows so that the flat tubes in each row of flat tube rows are connected to each other and then to an adjacent flat tube row, and a connecting joint is provided between two adjacent flat tube rows.

[0009] Further, the connection joint includes a first connection joint provided between two adjacent flat tubes in each flat tube row, and a first connection port of the first connection joint and a second connection port of the first connection joint are spaced apart in the second preset direction.

[0010] Furthermore, the connection joint includes a second connection joint provided between two adjacent flat tube rows, and a first connection port of the second connection joint and a second connection port of the second connection joint are spaced apart in the first preset direction.

[0011] Furthermore, the flat tubes in each row are provided at staggered positions, and the first connection port of the second connection joint and the second connection port of the second connection joint are provided at an interval in the second preset direction.

[0012] Furthermore, the heat exchanger further includes fins having multiple sets of locking portions, the multiple sets of locking portions and the multiple flat tube rows are arranged in one-to-one correspondence, and each set of locking portions is arranged to lock onto the corresponding flat tube row.

[0013] Furthermore, the flat tube group structure includes two rows of flat tubes spaced apart, and the multiple sets of locking portions include a plurality of first locking opening grooves spaced apart along the second preset direction and a plurality of second locking opening grooves spaced apart along the second preset direction, the first locking opening grooves and the second locking opening grooves being respectively located on both sides of the fin, and the opening direction of the first locking opening grooves is opposite to the opening direction of the second locking opening grooves.

[0014] Further, the spacing Wp between two adjacent flat tube rows is 15≦Wp≦65, and / or the spacing Lp between two adjacent flat tubes in each row of flat tube rows is 6.5≦Lp≦35.

[0015] Further, the heat exchange tube groups are multiple, the multiple heat exchange tube groups are spaced apart, and each of the multiple heat exchange tube groups has an inlet tube and an outlet tube, and the heat exchanger further includes an inlet distribution head, the inlet tube and the inlet distribution head being in communication with each other.

[0016] Furthermore, the heat exchanger further includes an outlet collecting pipe, and the outlet pipe and the outlet collecting pipe are in communication with each other.

[0017] Additionally, the heat exchanger further includes fins attached to the plurality of heat exchange tubes, wherein the fins are rod-like structures and the plurality of heat exchange tubes are spaced apart along an extension direction of the fins.

[0018] When the technical aspect of the present application is applied, a connection joint is provided between two adjacent flat tubes, and the first connection port is connected to the first flat pipe segment of one flat tube, and the second connection port is connected to the second flat pipe segment of the other flat tube, so that it is easy to provide a plurality of flat tubes in communication with each other, and thus, it is only necessary to provide one inlet pipe and one outlet pipe for each of the two flat tubes at the ends, and the collection pipe is not required, and the process is simplified. Therefore, by adopting the technical aspect provided by the present application, the technical problem that the production and installation of the collection pipe of the heat exchanger in the prior art is complicated can be solved. [Brief description of the drawings]

[0019] The drawings in the specification that form a part of this application are intended to provide a further understanding of the application, and the schematic examples and the description thereof are intended to interpret the application and are not intended to unduly limit the application.

[0020] [Figure 1] 1 shows a structural schematic diagram of a flat tube provided by an embodiment of the present application. [Diagram 2] 1 shows a front view of a flat tube provided by an embodiment of the present application. [Diagram 3] 1 shows a top view of a flat tube provided by an embodiment of the present application. [Figure 4] FIG. 2 shows a left side view of a flat tube provided by an embodiment of the present application. [Diagram 5] 1 shows a structural schematic diagram of a fin provided by an embodiment of the present application. [Figure 6] 1 shows a structural schematic diagram of a first connection joint provided by an embodiment of the present application. [Figure 7] 1 shows a structural schematic diagram of a second connection joint provided by an embodiment of the present application. [Figure 8] 1 shows a schematic diagram of fluid flow direction within a heat exchanger provided by an embodiment of the present application. [Figure 9] FIG. 2 shows a schematic diagram of flow paths in a heat exchange flat tube bank provided by an embodiment of the present application. [Figure 10] FIG. 2 shows a front view of a heat exchanger provided by an embodiment of the present application. [Figure 11] FIG. 2 shows a top view of a heat exchanger provided by an embodiment of the present application. [Figure 12] FIG. 2 shows a left side view of a heat exchanger provided by an embodiment of the present application. [Figure 13] FIG. 2 shows a right side view of a heat exchanger provided by an embodiment of the present application. [Figure 14] 1 shows an exploded view of a partial structure of a heat exchanger provided by an embodiment of the present application. [Figure 15] FIG. 2 shows a schematic diagram of a heat exchanger structure provided by an embodiment of the present application, in which fins are provided on both ends. [Figure 16] 1 shows a structural schematic diagram of a heat exchanger provided by an embodiment of the present application.

[0021] Here, the above mentioned drawings include the following reference numbers: 10 heat exchange tube group, 11 flat tube, 12 connecting joint, 121 first connecting joint, 122 second connecting joint, 20 fin, 21 first locking opening groove, 22 second locking opening groove, 30 side plate, 40 outlet collecting pipe, 50 connecting pipe, 60 inlet distribution head. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] It should be noted that, unless there is a contradiction, the embodiments and features in the embodiments in the present application may be combined with each other.

[0023] As shown in Figures 1 to 16, a heat exchanger is provided, which includes a heat exchange tube group 10, which includes a flat tube 11 and a connecting joint 12, and the flat tube 11 includes a first flat pipe segment, a bent pipe segment and a second flat pipe segment, and the first flat pipe segment, the bent pipe segment and the second flat pipe segment are connected in sequence to form a U-shaped tube structure. There are a plurality of flat tubes 11, which are spaced apart from each other, and two adjacent flat tubes 11 are connected to each other by the connecting joint 12.

[0024] When this structure is adopted, a connection joint 12 is provided between two adjacent flat tubes 11, and the first connection port is connected to the first flat pipe segment of one flat tube 11, and the second connection port is connected to the second flat pipe segment of the other flat tube 11, making it easy to connect multiple flat tubes 11 in communication. In this way, it is only necessary to provide one inlet pipe and one outlet pipe for each of the two end flat tubes 11, simplifying the manufacture and installation of the inlet flow collecting pipe and the outlet flow collecting pipe 40. Therefore, by adopting the heat exchanger provided in this application, the technical problem of the complicated manufacture and installation of the flow collecting pipe of the heat exchanger in the prior art can be solved.

[0025] Specifically, the connection joint 12 in this embodiment has a first connection port and a second connection port that are connected to each other, the first connection port is connected to the first flat pipe segment, the second connection port is connected to the second flat pipe segment, the connection joint 12 is a U-shaped joint, and the first connection port and the second connection port are located at both ends of the U-shaped joint, respectively. By adopting such a structure, the flat tubes 11 are provided as a U-shaped pipe structure, and the connection joint 12 is provided as a U-shaped joint, so that the entire heat exchange tube group 10 has a bent structure, which makes it easy for the fluid to exchange heat sufficiently.

[0026] Specifically, in this embodiment, the flat tubes 11 are uniformly arranged in a row to form a flat tube bank structure, the flat tube bank structure includes a plurality of flat tube rows spaced apart along a first preset direction, the flat tube rows include a plurality of flat tubes 11 spaced apart along a second preset direction, and the first preset direction and the second preset direction are arranged at a predetermined angle. Here, a connecting joint 12 is provided between two adjacent flat tubes 11 in each row of flat tube rows, and a connecting joint 12 is provided between two adjacent flat tube rows, so that the flat tubes 11 in each row of flat tube rows are connected to each other and then connected to the adjacent flat tube rows. By adopting and installing such a structure, the flat tubes 11 in each row of flat tube rows are connected to each other, and the flat tube rows of the plurality of rows are all connected to each other, which reduces the longitudinal size of the flat tube bank structure, optimizes the structural layout of the flat tube bank structure, and improves the installation compactness of the flat tube bank structure.

[0027] In this embodiment, the connection joint 12 includes a first connection joint 121, which is provided between two adjacent flat tubes 11 in each flat tube row, and a first connection port of the first connection joint 121 and a second connection port of the first connection joint 121 are provided at an interval in the second preset direction. By adopting such a structure, it becomes easier to better communicate two adjacent flat tubes 11 in each flat tube row, and all of the flat tubes 11 in each flat tube row can be communicated.

[0028] Specifically, the connection joint 12 in this embodiment includes a second connection joint 122, which is provided between two adjacent flat tube rows, and a first connection port of the second connection joint 122 and a second connection port of the second connection joint 122 are provided at an interval in the first preset direction. By adopting such a structure, it becomes easier to better communicate the flat tubes 11 of two adjacent flat tube rows, and it is possible to provide a plurality of flat tube rows all in communication with each other.

[0029] In this embodiment, the flat tubes 11 in each row are staggered, and the first connection port of the second connection joint 122 and the second connection port of the second connection joint 122 are spaced apart in the second preset direction. By adopting and installing such a structure, it is easy to form a staggered two-row heat exchanger structure, the structural layout of the heat exchanger is optimized, and the heat exchange performance is optimized.

[0030] Specifically, the heat exchanger in this embodiment further includes fins 20 having a plurality of sets of locking portions, the plurality of sets of locking portions and the plurality of flat tube rows are provided in one-to-one correspondence, and each set of locking portions is provided to be locked to the corresponding flat tube row. By adopting such a structure, the locking portions are provided and the locking installation is performed, making it easy to attach and detach.

[0031] Preferably, the flat tube bank structure in this embodiment includes two rows of flat tube rows spaced apart, the multiple sets of locking portions include a first locking opening groove 21 spaced apart along the second preset direction and a multiple number of second locking opening grooves 22 spaced apart along the second preset direction, the first locking opening groove 21 and the second locking opening groove 22 are located on both sides of the fin 20, respectively, and the opening direction of the first locking opening groove 21 and the opening direction of the second locking opening groove 22 may be opposite. By adopting and installing such a structure, the structural layout can be optimized, the installation of the two rows of flat tube rows can be facilitated, and the structure of a two-row heat exchanger with a staggered arrangement can be easily formed.

[0032] Specifically, the spacing between two adjacent flat tube rows is Wp=15≦Wp≦65. Or, the spacing between two adjacent flat tubes 11 in each row of flat tube rows is Lp=6.5≦Wp≦35. Or, the spacing between two adjacent flat tube rows can be Wp=15≦Wp≦65, and the spacing between two adjacent flat tubes 11 in each row of flat tube rows can be Lp=6.5≦Wp≦35.

[0033] Preferably, the distance Wp between two adjacent flat tube rows in this embodiment is 15≦Wp≦65. If the distance Wp is too small, specifically, if Wp is smaller than 15, the distance between two adjacent flat tube rows is too small, which makes it difficult to perform effective heat exchange. If the distance Wp is too large, specifically, if Wp is larger than 65, the distance between two adjacent flat tube rows is too large, which causes a certain amount of heat loss. Therefore, by setting Wp within the above range, effective heat exchange can be easily performed and heat loss can be reduced.

[0034] Preferably, the distance Lp between two adjacent flat tubes 11 in each row of flat tubes is 6.5≦Lp≦35. If the distance Lp is too small, specifically, if Lp is smaller than 6.5, the distance between two adjacent flat tubes 11 is too small, making it inconvenient to perform effective heat exchange. If the distance Lp is too large, specifically, if Lp is larger than 35, the distance between two adjacent flat tubes 11 is too large, causing a relatively large heat loss. Therefore, by setting Lp within the above range, effective heat exchange can be easily performed and heat loss can be reduced.

[0035] Specifically, in this embodiment, there are a plurality of heat exchange tube groups 10, the plurality of heat exchange tube groups 10 are spaced apart, each heat exchange tube group 10 is provided with an inlet pipe and an outlet pipe, and the heat exchanger further includes an inlet distribution head 60, and the inlet pipe and the inlet distribution head 60 are in communication with each other. By adopting such a structure, the plurality of heat exchange tube groups 10 can form a plurality of independent heat exchange modules, and independent heat exchange can be easily performed. Specifically, the inlet pipe is provided with the inlet distribution head 60, which facilitates distribution of the fluid. The inlet pipe and the outlet pipe are both provided with a connecting pipe 50, which facilitates connection by the connecting pipe 50.

[0036] In this embodiment, the heat exchanger further includes fins 20 attached to the plurality of heat exchange tube groups 10, where the fins 20 have a rod-like structure, and the plurality of heat exchange tube groups 10 are spaced apart along the extending direction of the fins 20. By adopting such a structure, it is easy to optimize the structural layout and easy to attach and detach. There are a plurality of fins 20, and the plurality of fins 20 are inserted in order.

[0037] Specifically, each heat exchange tube group 10 in this embodiment includes two rows of flat tubes, which are spaced apart in a direction perpendicular to the fins 20, and the rows of flat tubes in each heat exchange tube group 10 are arranged opposite each other. By adopting such a structure, it is easy to optimize the layout of the entire structure of the heat exchanger, and the compactness and structural stability of the layout of the heat exchange tube group 10 can be improved.

[0038] In this embodiment, the heat exchanger further includes an outlet collecting pipe 40, and the outlet pipes of the multiple heat exchange tube groups 10 are all connected to the outlet collecting pipe 40 to facilitate collection of liquid in the multiple outlet pipes.

[0039] The heat exchanger in this embodiment includes flat tubes 11 bent into a U shape, fins 20 with open slots on both sides, and a connecting joint 12 (the first connecting joint 121 is used to connect flat tubes 11 in the same row, and the second connecting joint 122 is used to connect flat tubes 11 across rows). The U-shaped flat tubes 11 in this embodiment are formed by bending, so the structural process is simple, the precision of the finished product is high, and the assembly of the flat tubes 11 and the fins 20 can be ensured. This is applicable to a staggered two-row fin insertion type heat exchanger, which has a simple structure, few parts, good chip integrity, and good reliability.

[0040] The heat exchanger in this embodiment further includes a side plate 30, the structure of which is similar to that of the fins 20, and the side plate 30 also has a structure with open slots on both sides.

[0041] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the technical effects of good consistency, good reliability, simple structure, and easy installation and removal.

[0042] It should be noted that the terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and further, when the terms "comprise" and / or "comprise" are used herein, they should be understood to indicate the presence of features, steps, operations, devices, assemblies, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangements, formulas and values ​​of the components and steps described in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for convenience of description, the dimensions of each part shown in the drawings are not drawn according to actual proportionality. Although the techniques, methods and equipment known to those skilled in the art are not discussed in detail, the described techniques, methods and equipment should be considered as part of the permitted specification, where appropriate. In all examples shown and discussed herein, any specific values ​​are merely illustrative and should not be construed as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar symbols and letters indicate similar elements in the following drawings, and therefore, once any element is defined in one drawing, it does not require further description in the subsequent drawings.

[0044] In the description of this application, the orientations or positional relationships indicated by directional terms such as "front", "rear", "up", "down", "left", "right", "lateral", "longitudinal", "vertical", "horizontal", "top", and "bottom" are generally orientations or positional relationships based on illustrations, and are merely for the convenience and simplification of the description of this application. Unless otherwise stated, these directional terms do not indicate or imply that a specified device or element has a particular orientation or must be constructed and operated in a particular orientation, and therefore should not be understood as limiting the scope of protection of this application. The directional terms "inside" and "outside" should be understood to mean the inside and outside of the contour of each member itself.

[0045] For ease of description, spatially relative terms such as "on," "above," "on top of," "on top of," and the like may be used herein to describe the spatial location of one illustrated device or feature relative to another. Spatially relative terms should be understood as intended to encompass different orientations of the device during use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is inverted, a device described as "above other devices or structures" or "on top of other devices or structures" would thereafter be positioned as "below other devices or structures" or "under other devices or structures." Thus, the exemplary term "above" may include both the "above" and "below" orientations. The device may be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein may be interpreted accordingly.

[0046] It should be further explained that the use of words such as "first", "second", etc. to limit the components is merely for the purpose of easily distinguishing corresponding components, and unless otherwise specified, the above-mentioned words do not have any special meaning, and therefore should not be understood as limiting the scope of protection of the present application.

[0047] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Those skilled in the art can make various modifications and variations to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat exchanger including a heat exchange tube group (10), the heat exchange tube group (10) including flat tubes (11) and a connecting joint (12), the flat tubes (11) including a first flat pipe segment, a bent pipe segment and a second flat pipe segment, the first flat pipe segment, the bent pipe segment and the second flat pipe segment being connected in sequence to form a U-shaped pipe structure, the flat tubes (11) are multiple, the multiple flat tubes (11) are spaced apart, and two adjacent flat tubes (11) are connected to each other by the connecting joint (12), The flat tubes (11) are uniformly arranged in a row to form a flat tube bank structure, the flat tube bank structure including a plurality of flat tube rows spaced apart along a first preset direction, the flat tube rows including a plurality of flat tubes (11) spaced apart along a second preset direction, and the first preset direction and the second preset direction are arranged at a predetermined angle; Here, the connection joint (12) is provided between two adjacent flat tubes (11) in the flat tube row of each row so that the flat tubes (11) in the flat tube row of each row are first connected to each other and then connected to the adjacent flat tube row, and the connection joint (12) is provided between two adjacent flat tube rows, The heat exchanger includes: The fin (20) further includes a plurality of sets of locking portions, the plurality of sets of locking portions and the plurality of flat tube rows are provided in one-to-one correspondence, and each set of locking portions is provided to be locked to the corresponding flat tube row, the flat tube group structure includes two rows of the flat tubes spaced apart, the multiple sets of the engagement portions include a plurality of first engagement opening grooves (21) spaced apart along the second preset direction and a plurality of second engagement opening grooves (22) spaced apart along the second preset direction, the first engagement opening grooves (21) and the second engagement opening grooves (22) are respectively located on both sides of the fin (20), and an opening direction of the first engagement opening grooves (21) and an opening direction of the second engagement opening grooves (22) are opposite to each other.

2. 2. The heat exchanger of claim 1, wherein the connection joint (12) has a first connection port and a second connection port that are connected to each other, the first connection port is connected to the first flat pipe segment, the second connection port is connected to the second flat pipe segment, the connection joint (12) is a U-shaped joint, and the first connection port and the second connection port are located at both ends of the U-shaped joint, respectively.

3. The connection joint (12) is 2. The heat exchanger of claim 1, further comprising a first connection joint (121) provided between two adjacent flat tubes (11) in each of the flat tube rows, wherein a first connection port of the first connection joint (121) and a second connection port of the first connection joint (121) are spaced apart in the second preset direction.

4. The connection joint (12) is 2. The heat exchanger of claim 1, further comprising a second connection joint (122) provided between two adjacent rows of the flat tubes, wherein a first connection port of the second connection joint (122) and a second connection port of the second connection joint (122) are spaced apart in a first preset direction.

5. 5. The heat exchanger of claim 4, wherein the flat tubes (11) in each row are arranged in a staggered position, and the first connection port of the second connection joint (122) and the second connection port of the second connection joint (122) are spaced apart in a second preset direction.

6. 6. A heat exchanger as claimed in any one of claims 1 to 5, wherein the spacing Wp between two adjacent flat tube rows is 15≦Wp≦65, and / or the spacing Lp between two adjacent flat tubes (11) in each row of the flat tube rows is 6.5≦Lp≦35.

7. 2. The heat exchanger of claim 1, wherein the heat exchange tube groups (10) are a plurality of groups, the plurality of heat exchange tube groups (10) being spaced apart, each of the plurality of heat exchange tube groups (10) having an inlet tube and an outlet tube, the heat exchanger further including an inlet distribution head (60), the inlet tubes and the inlet distribution head (60) being in communication with each other.

8. 8. The heat exchanger of claim 7, further comprising an outlet collecting pipe (40), the outlet pipe and the outlet collecting pipe (40) being in communication with each other.

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