JP2024519278A - Heat exchanger - Google Patents

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 manufacturing and installation of the flow collecting tube of the heat exchanger in the prior art is complicated. [Selected Figure] Figure 16

Description

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 entitled "Heat Exchanger."

This application relates to the technical field of heat exchangers, and more specifically, to heat exchangers.

Currently, a microchannel heat exchanger in the prior art usually includes a flat tube, an inlet collecting tube, and an outlet collecting tube, and the flat tubes are multiple and spaced apart, with the inlet ends of the multiple flat tubes all communicating with the inlet collecting tube, and the outlet ends of the multiple flat tubes all communicating with the outlet collecting tube. When adopting the above-mentioned structure, it is usually necessary to provide multiple connections on both the inlet collecting tube and the outlet collecting tube, 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.

However, when manufacturing the above-mentioned microchannel heat exchanger, it is necessary to provide multiple connections on both the inlet and outlet collection pipes, which complicates the manufacturing process of the inlet and outlet collection pipes and poses a certain degree of difficulty in installation.

The main objective of this application is to provide a heat exchanger that solves the technical problem of the complicated manufacturing and installation of the heat exchanger collection tubes in the conventional technology.

To achieve the above-mentioned object, 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.

Furthermore, the connection joint includes 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 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.

Furthermore, the flat tubes are uniformly arranged in rows to form a flat tube group structure, the flat tube group 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 spaced apart along a second preset direction, the first preset direction and the second preset direction are arranged at a predetermined angle, and a connection 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 connected to the adjacent flat tube rows, and a connection joint is provided between two adjacent flat tube rows.

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

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

Furthermore, the flat tubes in each row are staggered, and the first connection port of the second connection joint and the second connection port of the second connection joint are spaced apart in the second preset direction.

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 provided in one-to-one correspondence, and each set of locking portions is provided to be locked to the corresponding flat tube row.

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 located on both sides of the fin, respectively, and the opening direction of the first locking opening grooves and the opening direction of the second locking opening grooves being opposite to each other.

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

Furthermore, there are a plurality of heat exchange tube groups, the plurality of heat exchange tube groups are spaced apart, each of the plurality of heat exchange tube groups has an inlet tube and an outlet tube, and the heat exchanger further includes an inlet distribution head, and the inlet tube and the inlet distribution head are in communication.

Furthermore, the heat exchanger further includes an outlet collecting tube, and the outlet tube and the outlet collecting tube are in communication.

The heat exchanger further includes fins attached to the plurality of heat exchange tube groups, where the fins are rod-shaped structures and the plurality of heat exchange tube groups are spaced apart along the extension direction of the fins.

When the technical aspects of the present application are 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, making it easy to provide multiple flat tubes in communication. In this way, it is sufficient to provide one inlet pipe and one outlet pipe for each of the two flat tubes at the ends, eliminating the need for a collection pipe and simplifying the process. Therefore, by adopting the technical aspects provided in the present application, it is possible to solve the technical problem of the complicated manufacturing and installation of the collection pipes of the heat exchanger in the conventional technology.

The drawings in the specification which form part of this application are intended to provide further understanding of the application, and the schematic examples and their explanations are intended to aid in the interpretation of the application and are not intended to inappropriately limit the application.

1 shows a structural schematic diagram of a flat tube provided by an embodiment of the present application. 1 shows a front view of a flat tube provided by an embodiment of the present application. 1 shows a top view of a flat tube provided by an embodiment of the present application. FIG. 2 shows a left side view of a flat tube provided by an embodiment of the present application. 1 shows a structural schematic diagram of a fin provided by an embodiment of the present application. 1 shows a structural schematic diagram of a first connection joint provided by an embodiment of the present application. 1 shows a structural schematic diagram of a second connection joint provided by an embodiment of the present application. 1 shows a schematic diagram of fluid flow direction within a heat exchanger provided by an embodiment of the present application. FIG. 2 shows a schematic diagram of flow paths in a heat exchange flat tube bank provided by an embodiment of the present application. FIG. 2 shows a front view of a heat exchanger provided by an embodiment of the present application. FIG. 2 shows a top view of a heat exchanger provided by an embodiment of the present application. FIG. 2 shows a left side view of a heat exchanger provided by an embodiment of the present application. FIG. 2 shows a right side view of a heat exchanger provided by an embodiment of the present application. 1 shows an exploded view of a partial structure of a heat exchanger provided by an embodiment of the present application. 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. 1 shows a structural schematic diagram of a heat exchanger provided by an embodiment of the present application.

Here, the above mentioned drawings include the following reference numbers:
REFERENCE SIGNS LIST 10 heat exchange tube group, 11 flat tube, 12 connection joint, 121 first connection joint, 122 second connection joint, 20 fin, 21 first locking opening groove, 22 second locking opening groove, 30 side plate, 40 outlet collecting pipe, 50 connection pipe, 60 inlet distribution head.

It should be noted that, unless inconsistent, the embodiments and features of the embodiments in this application may be combined with each other. The present application will be described in detail below in conjunction with the embodiments with reference to the drawings.

As shown in Fig. 1 to Fig. 16, a heat exchanger is provided, the heat exchanger includes a heat exchange tube group 10, the heat exchange tube group 10 includes a flat tube 11 and a connecting joint 12, the flat tube 11 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. There are a plurality of flat tubes 11, the flat tubes 11 are spaced apart, and two adjacent flat tubes 11 are connected to each other by the connecting joint 12.

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 sufficient 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 collection pipe and the outlet collection pipe 40. Therefore, by adopting the heat exchanger provided in this application, the technical problem of the complicated manufacture and installation of the collection pipe of the heat exchanger in the conventional technology can be solved.

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, making it easy for the fluid to exchange heat sufficiently.

Specifically, in this embodiment, the flat tubes 11 are uniformly arranged in rows to form a flat tube group structure, and the flat tube group structure includes a plurality of flat tube rows spaced apart along a first preset direction, and the flat tube row includes 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 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, and a connecting joint 12 is provided between the two adjacent flat tube rows. By adopting and providing 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 multiple rows can all be provided in communication with each other, thereby reducing the longitudinal size of the flat tube group structure, optimizing the structural layout of the flat tube group structure, and improving the installation compactness of the flat tube group structure.

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 the first connection port of the first connection joint 121 and the second connection port of the first connection joint 121 are provided at intervals in the second preset direction. By adopting such a structure, it becomes easier to better connect two adjacent flat tubes 11 in each flat tube row, and all of the multiple flat tubes 11 in each flat tube row can be connected.

Specifically, in this embodiment, the connection joint 12 includes a second connection joint 122, which is provided between two adjacent flat tube rows, and the first connection port of the second connection joint 122 and the 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 the two adjacent flat tube rows, and it is possible to provide multiple flat tube rows that are all connected to each other.

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 such a structure, it becomes easier 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.

Specifically, the heat exchanger in this embodiment further includes fins 20 having multiple sets of locking portions, and the multiple sets of locking portions and the multiple flat tube rows are provided in one-to-one correspondence, with each set of locking portions being 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.

Preferably, the flat tube group structure in this embodiment includes two rows of flat tubes spaced apart, and 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, and 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 providing such a structure, the structural layout can be optimized, the installation of the two rows of flat tubes can be facilitated, and the formation of a staggered two-row heat exchanger structure can be facilitated.

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

Preferably, in this embodiment, the distance between two adjacent flat tube rows is Wp, which is 15≦Wp≦65. If the distance Wp is too small, specifically, if Wp is smaller than 15, the distance between the two adjacent flat tube rows is too small, making it inconvenient to perform effective heat exchange. If the distance Wp is too large, specifically, if Wp is larger than 65, the distance between the two adjacent flat tube rows is too large, causing 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.

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 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.

Specifically, in this embodiment, there are multiple heat exchange tube groups 10, and the multiple heat exchange tube groups 10 are arranged at intervals, 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 connected. By adopting such a structure, the multiple heat exchange tube groups 10 can form multiple independent heat exchange modules, and independent heat exchange can be easily performed. Specifically, the inlet distribution head 60 is provided on the inlet pipe, which makes it easy to distribute the fluid. The inlet pipe and the outlet pipe are both provided with a connecting pipe 50, which makes it easy to connect them by the connecting pipe 50.

In this embodiment, the heat exchanger further includes fins 20 attached to the multiple heat exchange tube groups 10, where the fins 20 have a rod-shaped structure, and the multiple heat exchange tube groups 10 are spaced apart along the extension direction of the fins 20. By adopting such a structure, it becomes easier to optimize the structural layout and to attach and detach the fins 20. There are multiple fins 20, and the multiple fins 20 are inserted in sequence.

Specifically, in this embodiment, each heat exchange tube group 10 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 becomes easier to optimize the layout of the overall structure of the heat exchanger, and the compactness and structural stability of the layout of the heat exchange tube group 10 can be improved.

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

The heat exchanger in this embodiment includes flat tubes 11 bent into a U shape, fins 20 with open slots on both sides, and connecting joints 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, which simplifies the construction process, ensures high precision of the finished product, and ensures the assembly of the flat tubes 11 and the fins 20. This is applicable to a staggered two-row fin insertion type heat exchanger, which has a simple structure, few parts, good chip consistency, and good reliability.

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

From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the technical effects of good compatibility, good reliability, simple structure, and easy attachment and removal.

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 of the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and further, the terms "comprises" and/or "includes" when used herein are understood to indicate the presence of features, steps, operations, devices, assemblies, and/or combinations thereof.

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 this 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 proportional relationships. 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 subsequent drawings.

In the description of this application, the orientations or positional relationships indicated by directional terms such as "front," "back," "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 inside and outside of the contour of each member itself.

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 relationship of one illustrated device or feature 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 described in the drawings. For example, if the devices in the drawings are 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.

Furthermore, it should be explained that the use of words such as "first" and "second" to qualify parts is merely to easily distinguish corresponding parts, and unless otherwise specified, the above words do not have any special meaning and should not be understood as limiting the scope of protection of this application.

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

Claims (11)

A heat exchanger including a group of heat exchange tubes (10), the group of heat exchange tubes (10) including flat tubes (11) and a 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 are 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 by the joint (12). A heat exchanger. The heat exchanger according to 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. 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, the connection joint (12) is provided between two adjacent flat tubes (11) in each row of the flat tube rows so that the flat tubes (11) in each row of the flat tube rows are connected to each other and then connected to the adjacent flat tube rows, and the connection joint (12) is provided between two adjacent flat tube rows. The connection joint (12) is
4. The heat exchanger of claim 3, 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. The connection joint (12) is
4. The heat exchanger of claim 3, further comprising a second connection joint (122) provided between two adjacent rows of the flat tubes, the first connection port of the second connection joint (122) and the second connection port of the second connection joint (122) being spaced apart in a first preset direction. The heat exchanger according to claim 5, wherein the flat tubes (11) in each row are arranged at staggered positions, and the first connection port of the second connection joint (122) and the second connection port of the second connection joint (122) are arranged at intervals in the second preset direction. The heat exchanger includes:
The heat exchanger of claim 3, further comprising a fin (20) having multiple sets of locking portions, the multiple sets of locking portions being arranged in one-to-one correspondence with the multiple flat tube rows, and each set of locking portions being locked to the corresponding flat tube row. The flat tube group structure includes two rows of the flat tubes spaced apart from each other, and the multiple sets of the locking portions include a plurality of first locking opening grooves (21) spaced apart along the second preset direction and a plurality of second locking opening grooves (22) spaced apart along the second preset direction, the first locking opening grooves (21) and the second locking opening grooves (22) are located on both sides of the fin (20), respectively, and the opening direction of the first locking opening grooves (21) and the opening direction of the second locking opening grooves (22) are opposite to each other. The heat exchanger according to claim 7. The heat exchanger according to any one of claims 3 to 8, wherein the spacing between two adjacent flat tube rows is 15≦Wp≦65 in Wp, and/or the spacing between two adjacent flat tubes (11) in each row of the flat tube rows is 6.5≦Lp≦35 in Lp. The heat exchanger according to claim 1, wherein the heat exchange tube groups (10) are multiple, the multiple heat exchange tube groups (10) are spaced apart, each of the multiple heat exchange tube groups (10) has an inlet tube and an outlet tube, the heat exchanger further includes an inlet distribution head (60), and the inlet tube and the inlet distribution head (60) are in communication with each other. The heat exchanger according to claim 10, further comprising an outlet collecting pipe (40), and the outlet pipe and the outlet collecting pipe (40) are in communication with each other.

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