Heat exchanger

Abstract

The heat exchanger comprises a collecting pipe and a plurality of heat exchange pipes, the heat exchange pipes are arranged at intervals in the axial direction of the collecting pipe, and at least part of the heat exchange pipes communicate with the collecting pipe; the heat exchanger further comprises a protective cover, the protective cover is provided with a protective cavity and an opening communicated with the protective cavity, the joints of the collecting pipes and the heat exchange pipes and the collecting pipes are all arranged in the protective cavity, and the parts, away from the collecting pipes, of the heat exchange pipes extend out of the opening. According to the heat exchanger, the connecting positions of the collecting pipes and the heat exchange pipes and the connecting positions of the collecting pipes and the heat exchange pipes are all arranged in the protective cavities of the protective covers, the connecting positions of the collecting pipes and the heat exchange pipes and the collecting pipes can be prevented from being exposed to the external environment, the protective covers serve as protective layers, and protection is provided for the connecting positions of the collecting pipes and the heat exchange pipes and the collecting pipes; and the impact of the external environment on the joints of the collecting pipes and the heat exchange pipes and the collecting pipes is avoided, so that the heat exchanger can resist the impact of the external environment.

Description

Technical Field

[0001] This application relates to the field of heat exchange equipment technology, and in particular to a heat exchanger. Background Technology

[0002] Existing heat exchangers consist of interconnected manifolds and heat exchange tubes. The ends connecting the heat exchange tubes and manifolds are enlarged into cup shapes, and branch pipes connect the cup openings of the manifolds and heat exchange tubes to ensure communication. However, after the ends of the heat exchange tubes are enlarged into cup openings, the strength of the heat exchange tubes becomes relatively weak, and the cup opening area is prone to breakage. Furthermore, since both ends of the branch pipes are connected to the cup openings of the manifolds and heat exchange tubes respectively, welding is required, resulting in significant solder consumption.

[0003] Furthermore, the manifold and heat exchange tubes are exposed to the external environment, and impacts from the external environment can easily damage the manifold, branch pipes, and heat exchange tubes, especially at the connection points between the manifold and heat exchange tubes. For example, when the manifold is subjected to external force, the cup openings of the branch pipes and heat exchange tubes are prone to breakage, thereby reducing the service life of the heat exchanger. Utility Model Content

[0004] Therefore, it is necessary to provide a heat exchanger that can withstand the impact of the external environment.

[0005] A heat exchanger includes a manifold and a plurality of heat exchange tubes, the plurality of heat exchange tubes being spaced apart along the axial direction of the manifold, and at least a portion of the heat exchange tubes communicating with the manifold; the heat exchanger further includes a protective cover, the protective cover having a protective cavity and an opening communicating with the protective cavity, the connection between the manifold and the heat exchange tubes, and the manifold itself being located within the protective cavity, and the portion of the heat exchange tubes away from the manifold extending out from the opening.

[0006] In one embodiment, the heat exchanger further includes a side plate connected to the opening to form a closed chamber with the protective cavity, and the heat exchange tube passes through the side plate and is fixedly connected to the side plate.

[0007] In one embodiment, the edge of the opening of the protective cover is provided with a first flange, the first flange extending in a direction away from the protective cavity, and the side plate is connected to the opening through the first flange so that the protective cavity forms a closed chamber;

[0008] Alternatively, a second flange is provided on the edge of the side plate, the second flange extending toward the protective cavity, and the second flange connecting to the opening to form a closed chamber for the protective cavity.

[0009] In one embodiment, the protective cover includes a vertical plate extending axially along the manifold and end plates connected to both ends of the vertical plate, the vertical plate and the end plates enclosing the protective cavity with the opening.

[0010] In one embodiment, the upright plate and / or the end plate are provided with through holes;

[0011] The heat exchanger also includes a pipe that passes through the through hole and communicates with the manifold.

[0012] In one embodiment, the edge of the through hole is provided with a third flange, which is welded to the outer wall of the pipe.

[0013] In one embodiment, the pipe extends along the length of the heat exchange tube, the through hole is located on the vertical plate, and the protective cover is integrally formed.

[0014] In one embodiment, the manifold includes an inlet manifold and an outlet manifold, which are respectively located at both ends of the heat exchange tube;

[0015] The number of protective covers is two, and the two protective covers are respectively located at both ends of the heat exchange tube, and the inlet manifold and the outlet manifold are respectively located in one of the protective covers.

[0016] In one embodiment, the manifold includes an inlet manifold and an outlet manifold, which are located at the same end of the heat exchange tube and are housed within the same protective cover.

[0017] In one embodiment, the manifold is provided with a plurality of connection holes, and a fourth flange protrudes from the edge of the connection hole. At least a portion of the heat exchange tube is connected to the fourth flange and communicates with the manifold.

[0018] Compared with the prior art, the heat exchanger provided in this application, by placing the connection between the manifold and the heat exchange tube, as well as the manifold itself, inside the protective cavity of the protective cover, can prevent the connection between the manifold and the heat exchange tube, as well as the manifold, from being exposed to the external environment. The protective cover, as a protective layer, provides protection for the connection between the manifold and the heat exchange tube, as well as the manifold, avoiding the impact of the external environment on the connection between the manifold and the heat exchange tube, as well as the manifold, thereby enabling the heat exchanger to withstand the impact of the external environment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is an exploded view of a heat exchanger according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of a heat exchanger according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the first flange according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the second flange according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of a pipe and a manifold according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of a pipe and a manifold according to another embodiment of this application.

[0026] Reference numerals: 10, heat exchanger; 100, manifold; 101, connecting hole; 110, fourth flange; 200, heat exchange tube; 300, protective cover; 301, protective cavity; 302, opening; 303, through hole; 310, first flange; 320, vertical plate; 330, end plate; 340, third flange; 400, side plate; 410, second flange; 500, pipe. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0032] Please see Figures 1 to 6 This application provides a heat exchanger 10, including a manifold 100 and a plurality of heat exchange tubes 200. The plurality of heat exchange tubes 200 are arranged at intervals along the axial direction of the manifold 100, and at least a portion of the heat exchange tubes 200 are in communication with the manifold 100. The heat exchanger 10 also includes a protective cover 300, which has a protective cavity 301 and an opening 302 communicating with the protective cavity 301. The connection between the manifold 100 and the heat exchange tubes 200, as well as the manifold 100, are all located in the protective cavity 301, and the portion of the heat exchange tubes 200 away from the manifold 100 extends out from the opening 302.

[0033] In this embodiment, the heat exchanger 10 avoids exposing the connection between the manifold 100 and the heat exchange tube 200, as well as the manifold 100 itself, to the external environment by placing the connection between the manifold 100 and the heat exchange tube 200, and the manifold 100, within the protective cavity 301 of the protective cover 300. The protective cover 300, as a protective layer, provides protection for the connection between the manifold 100 and the heat exchange tube 200, and the manifold 100, thus preventing the external environment from impacting the connection between the manifold 100 and the heat exchange tube 200, and the manifold 100. This allows the heat exchanger 10 to withstand the impact of the external environment.

[0034] It is understandable that the heat exchange tube 200 is welded to the manifold 100. The protective cavity 301 can also protect the weld joints on the manifold 100, prevent weld corrosion and leakage, and extend the service life of the heat exchanger 10 and make it suitable for a wider range of environments.

[0035] In one embodiment, the heat exchanger 10 further includes a side plate 400, which is connected to the opening 302 to form a closed chamber in the protective cavity 301. The heat exchange tube 200 passes through the side plate 400 and is fixedly connected to it. This provides more comprehensive and multi-angle protection for the connection between the manifold 100 and the heat exchange tube 200 in the protective cavity 301, as well as for the manifold 100 itself, thereby improving the heat exchanger 10's ability to withstand external environmental impacts. Illustratively, the side plate 400 and the protective cover 300 are fixedly connected by welding, bonding, or other methods; this application does not impose limitations on this method.

[0036] Furthermore, such as Figure 3 As shown, the protective cover 300 has a first flange 310 at the edge of the opening 302. The first flange 310 extends away from the protective cavity 301, and the side plate 400 is connected to the opening 302 through the first flange 310 to form a closed chamber in the protective cavity 301. The first flange 310 increases the connection area between the protective cover 300 and the side plate 400, thus making the fixed connection between the protective cover 300 and the side plate 400 simpler and more secure. Schematic, the first flange 310 of the protective cover 300 and the side plate 400 are fixedly connected by welding. In other embodiments, the first flange 310 of the protective cover 300 and the side plate 400 can also use other connection methods.

[0037] In one embodiment, such as Figure 4 As shown, a second flange 410 is provided on the edge of the side plate 400. The second flange 410 extends toward the protective cavity 301 and connects to the opening 302 to form a closed chamber in the protective cavity 301. The second flange 410 increases the connection area between the protective cover 300 and the side plate 400, thus making the fixed connection between the protective cover 300 and the side plate 400 simpler and more secure. Specifically, the second flange 410 can be provided on the inner side of the protective cover 300 or on the outer side of the protective cavity 301; this application does not impose any limitation on this.

[0038] In one embodiment, the protective cover 300 includes a vertical plate 320 extending axially along the manifold 100 and end plates 330 connected to both ends of the vertical plate 320. The vertical plate 320 and end plates 330 enclose a protective cavity 301 with an opening 302. Thus, the shape of the protective cover 300 is flexible and customizable, improving its versatility for the heat exchanger 10. Specifically, the vertical plate 320 and end plates 330 can be an integral structure or a separate structure; this application does not impose any limitations on this.

[0039] In one embodiment, the heat exchanger 10 further includes a pipe 500, which passes through a through hole 303 on the protective cover 300 and communicates with the manifold 100. The through hole 303 is located on the end plate 330 or the vertical plate 320. This allows the entire manifold 100 to be placed within the protective cavity 301 inside the protective cover 300, and facilitates the connection of the pipe 500 to the manifold 100. It should be noted that refrigerant flows into the manifold 100 of the heat exchanger 10 through the pipe 500, or flows out of the heat exchanger 10 through the pipe 500.

[0040] Specifically, when there is only one pipe 500, the number of through holes 303 is one, and the through hole 303 can be set on the end plate 330 or the vertical plate 320. This application does not limit this. When there are two or more pipes 500, the number of through holes 303 is two or more. In this case, the two through holes 303 can be set on the same vertical plate 320 or the end plate 330, or one of the two through holes 303 can be set on the vertical plate 320 and the other on the end plate 330. This application does not limit this.

[0041] In one embodiment, the edge of the through hole 303 is provided with a third flange 340, which is welded to the outer wall of the pipe 500. The third flange 340 increases the contact area between the pipe 500 and the through hole 303, thereby preventing the through hole 303 from damaging the pipe 500 and extending the service life of the heat exchanger 10.

[0042] Furthermore, the third flange 340 can be located inside the protective cavity 301 of the protective cover 300, or it can be located on the side of the protective cover 300 away from the protective cavity 301. This facilitates the connection between the pipe 500 and the third flange 340. The third flange 340 can also be located on both sides of the protective cover 300, which further increases the contact area between the third flange 340 and the pipe 500, and further improves the protective effect of the third flange 340 on the pipe 500.

[0043] To illustrate, the height of the third flange 340 should be greater than or equal to 5mm. This ensures sufficient contact area between the third flange 340 and the pipe 500, thereby improving the protective effect of the third flange 340 on the pipe 500. In one application example, the height of the third flange 340 can be selected according to the diameter of the pipe 500. As the pipe diameter increases, the height of the third flange 340 should be increased accordingly to avoid cutting the pipe 500.

[0044] In one embodiment, such as Figure 5 and Figure 6As shown, the pipe 500 extends along the length of the heat exchange tube 200, the through hole 303 is provided in the vertical plate 320, and the protective cover 300 is integrally formed. It can be understood that the protective cover 300 can be fitted onto the pipe 500, and then the protective cover 300 can be fixed to the side plate 400. This simplifies the manufacturing process of the heat exchanger 10 and makes the overall structure of the heat exchanger 10 more compact.

[0045] In another embodiment, such as Figure 1 and Figure 2 As shown, the pipe 500 extends along the length of the manifold 100, and the through hole 303 is provided on the end plate 330. The protective cover 300 is a split type. Further, the protective cover 300 includes four end plates 330, of which three end plates 330 without through holes 303 are arranged around the edge of the vertical plate 320, forming a protective cavity 301 with an opening 302. After the manifold 100 is placed in the protective cavity 301, the pipe 500 passes through the through hole 303. It is also necessary to fix the end plate 330 with the through hole 303 to the vertical plate 320 to further enclose the protective cavity 301, so as to reduce the connection between the manifold 100 and the heat exchange tube 200 and the exposed area of ​​the manifold 100, and further enhance the protective effect of the protective cavity 301 on the connection between the manifold 100 and the heat exchange tube 200 and the manifold 100. As an illustration, pipe 500 and manifold 100 can be integrated into a single pipe 500. This simplifies the manufacturing process and saves costs.

[0046] In one embodiment, the manifold 100 includes an inlet manifold and an outlet manifold, thereby enabling the fluid to circulate between the inlet manifold, the heat exchange tube 200, and the outlet manifold, thus achieving the function of heat exchange.

[0047] Furthermore, the inlet manifold and outlet manifold are respectively located at both ends of the heat exchange tube 200; there are two protective covers 300, each located at one end of the heat exchange tube 200, with the inlet manifold and outlet manifold each housed within a single protective cover 300. This provides protection for the inlet manifold, the connection between the inlet manifold and the heat exchange tube 200, the outlet manifold, and the connection between the outlet manifold and the heat exchange tube 200, thereby further improving the heat exchanger 10's ability to withstand external environmental impacts and extending its service life.

[0048] Furthermore, the inlet manifold and the outlet manifold are located at the same end of the heat exchange tube 200, and are housed within the same protective cover 300. In other words, the inlet manifold and the outlet manifold are arranged side-by-side, and the connections between the inlet manifold and the heat exchange tube 200, the connections between the outlet manifold and the heat exchange tube 200, and both the inlet and outlet manifolds are located within the protective cavity 301 of the protective cover 300. This not only protects the weld points on both the inlet and outlet manifolds simultaneously, but also enhances the heat exchanger 10's ability to withstand external environmental impacts, thereby extending the service life of the heat exchanger 10.

[0049] Understandably, at least some of the heat exchange tubes 200 are connected to the outlet manifold, making the overall structure of the heat exchanger 10 more compact.

[0050] In one embodiment, the manifold 100 is provided with a plurality of connection holes 101, and a fourth flange 110 protrudes from the edge of the connection hole 101. At least a portion of the heat exchange tube 200 is connected to the fourth flange 110 and communicates with the manifold 100. Specifically, the manifold 100 is welded to the fourth flange 110. In this embodiment, by directly connecting a portion of the heat exchange tube 200 to the fourth flange 110 on the manifold 100, the branch pipe in the prior art is eliminated. Thus, not only is it unnecessary to perform cup-mouth expansion operation on the end of the heat exchange tube 200 near the manifold 100, thereby enhancing the strength of the end of the heat exchange tube 200, but it also reduces one welding point, reduces raw materials, and saves production costs.

[0051] Specifically, at least some of the heat exchange tubes 200 are connected to the inlet manifold, at least some of the heat exchange tubes 200 are connected to the outlet manifold, and the remaining heat exchange tubes 200 are interconnected. The inlet manifold is connected to pipe 500 to allow refrigerant to flow into the heat exchanger 10, and the outlet manifold is connected to another pipe 500 to allow refrigerant to flow out of the heat exchanger 10. The flow direction of the refrigerant in the heat exchanger 10 is as follows: after flowing into the inlet manifold from pipe 500, it enters the heat exchange tubes 200, then enters the outlet manifold from the heat exchange tubes 200, and finally flows out of the heat exchanger 10 through another pipe 500 connected to the outlet manifold.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A heat exchanger, comprising a manifold (100) and a plurality of heat exchange tubes (200), the plurality of heat exchange tubes (200) being spaced apart along the axial direction of the manifold (100), and at least a portion of the heat exchange tubes (200) being in communication with the manifold (100); Its features are, The heat exchanger also includes a protective cover (300), which has a protective cavity (301) and an opening (302) communicating with the protective cavity (301). The connection between the manifold (100) and the heat exchange tube (200) and the manifold (100) are both located in the protective cavity (301), and the portion of the heat exchange tube (200) away from the manifold (100) extends out from the opening (302).

2. The heat exchanger according to claim 1, characterized in that, The heat exchanger also includes a side plate (400), which is connected to the opening (302) to form a closed chamber for the protective cavity (301). The heat exchange tube (200) passes through the side plate (400) and is fixedly connected to the side plate (400).

3. The heat exchanger according to claim 2, characterized in that, The protective cover (300) has a first flange (310) at the edge of the opening (302). The first flange (310) extends in a direction away from the protective cavity (301). The side plate (400) is connected to the opening (302) through the first flange (310) so that the protective cavity (301) forms a closed chamber. Alternatively, a second flange (410) is provided on the edge of the side plate (400), the second flange (410) extends toward the protective cavity (301), and the second flange (410) is connected to the opening (302) so that the protective cavity (301) forms a closed chamber.

4. The heat exchanger according to claim 1, characterized in that, The protective cover (300) includes a vertical plate (320) extending axially along the manifold (100) and an end plate (330) connected to both ends of the vertical plate (320). The vertical plate (320) and the end plate (330) enclose the protective cavity (301) with the opening (302).

5. The heat exchanger according to claim 4, characterized in that, The upright plate (320) and / or the end plate (330) are provided with through holes (303); The heat exchanger also includes a pipe (500) which passes through the through hole (303) and is connected to the manifold (100).

6. The heat exchanger according to claim 5, characterized in that, The through hole (303) has a third flange (340) at its edge, and the third flange (340) is welded to the outer wall of the pipe (500).

7. The heat exchanger according to claim 5, characterized in that, The pipe (500) extends along the length of the heat exchange tube (200), the through hole (303) is provided on the vertical plate (320), and the protective cover (300) is integrally formed.

8. The heat exchanger according to claim 1, characterized in that, The manifold (100) includes an inlet manifold and an outlet manifold, which are respectively located at both ends of the heat exchange tube (200); The number of protective covers (300) is two, and the two protective covers (300) are respectively located at both ends of the heat exchange tube (200), and the inlet manifold and the outlet manifold are respectively located in one of the protective covers (300).

9. The heat exchanger according to claim 1, characterized in that, The manifold (100) includes an inlet manifold and an outlet manifold, which are located at the same end of the heat exchange tube (200) and are housed in the same protective cover (300).

10. The heat exchanger according to claim 1, characterized in that, The manifold (100) is provided with a plurality of connection holes (101), and the edge of the connection hole (101) is provided with a fourth flange (110). At least part of the heat exchange tube (200) is connected to the fourth flange (110) and communicates with the manifold (100).

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