Heat exchange tube and heat exchanger

Abstract

The invention provides a heat exchange tube and a heat exchanger. The heat exchange efficiency can be improved. The heat exchange pipe comprises a first row pipe section and a second row pipe section, the first row pipe section comprises a plurality of first pipe sections arranged in the first direction, and the second row pipe section comprises a plurality of second pipe sections arranged in the first direction; the first row pipe section and the second row pipe section are arranged side by side in the second direction, and the second direction is perpendicular to the first direction. The third pipe sections are arranged in the first direction; one end of each first pipe section is connected with one end of the adjacent second pipe section through the third pipe section; the first row of pipe sections and the second row of pipe sections are connected in series through the plurality of third pipe sections to form a pipeline; the first pipe section and the second pipe section which are projected in the second direction and connected with the same third pipe section are arranged in a crossed mode in the first direction.

Description

Technical Field

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

[0002] A parallel-flow heat exchanger consists of two parallel manifolds, with multiple straight heat exchange tubes positioned between them. Each heat exchange tube is connected to both manifolds at its ends. The refrigerant in one manifold can be distributed to multiple heat exchange tubes before converging into the other manifold. As the airflow passes through the heat exchanger, it exchanges heat with the refrigerant in the heat exchange tubes. The heat exchange efficiency of this type of heat exchanger needs further improvement. Summary of the Invention

[0003] The purpose of this solution is to provide a heat exchange tube and a heat exchanger that can improve the heat exchange efficiency of the heat exchanger.

[0004] To solve the above-mentioned technical problems, this solution provides a heat exchange tube, which includes a first row of tubes and a second row of tubes. The first row of tubes includes a plurality of first tubes arranged along a first direction, and the second row of tubes includes a plurality of second tubes arranged along the first direction. The first row of tubes and the second row of tubes are arranged side by side along a second direction, which is perpendicular to the first direction.

[0005] It also includes multiple third pipe segments arranged along the first direction;

[0006] One end of each first pipe segment and one end of the adjacent second pipe segment are connected by the third pipe segment; the first pipe segment and the second pipe segment are connected in series by multiple third pipe segments to form a single pipeline;

[0007] Projected along the second direction, the first pipe segment and the second pipe segment connected to the same third pipe segment are arranged intersectingly in the first direction.

[0008] The heat exchange tube in this scheme includes two rows of tube segments. The projections of the first and second tube segments, which are connected to the same third tube segment, are arranged intersecting in the first direction along the second direction. In this way, when the airflow passes through the heat exchange tube, the turbulence on the airflow can be enhanced to improve the heat exchange efficiency.

[0009] This solution also provides a heat exchanger, including a first manifold and a second manifold, and a plurality of heat exchange tubes disposed between the first manifold and the second manifold, wherein the heat exchange tubes are any of the heat exchange tubes described above.

[0010] The heat exchanger in this solution includes heat exchange tubes, which consist of two rows of tube segments. The projections of the first and second tube segments, which are connected to the same third tube segment, are arranged intersecting in the first direction along the second direction. In this way, when the airflow passes through the heat exchange tubes, the turbulence on the airflow can be enhanced to improve the heat exchange efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the heat exchanger in the first embodiment of this application;

[0012] Figure 2 for Figure 1 The main view;

[0013] Figure 3 for Figure 2 Top view;

[0014] Figure 4 for Figure 1 A schematic diagram of the structure of a single heat exchange tube;

[0015] Figure 5 for Figure 2 A magnified view of part A in the middle;

[0016] Figure 6 for Figure 4 A magnified view of part B in the middle;

[0017] Figure 7 This is a schematic diagram of the structure of the second type of heat exchange tube in the embodiments of this application;

[0018] Figure 8 This is a schematic diagram of the structure of the third type of heat exchange tube in the embodiments of this application;

[0019] Figure 9 This is a schematic diagram of the structure of the fourth type of heat exchange tube in the embodiments of this application;

[0020] Figure 10 This is a schematic diagram of the structure of the fifth type of heat exchange tube in the embodiments of this application;

[0021] Figure 11 for Figure 3 A bottom view;

[0022] Figure 12 This is a schematic diagram of a first assembly of the first, second, and third sections of the heat exchange tube in an embodiment of this application.

[0023] Figure 13 for Figure 12 Top view;

[0024] Figure 14 for Figure 13 A cross-sectional view along the CC direction;

[0025] Figure 15 This is a schematic diagram of a second assembly of the first, second, and third sections of the heat exchange tube in an embodiment of this application;

[0026] Figure 16 for Figure 15 Top view;

[0027] Figure 17 for Figure 16 Sectional view along the DD direction;

[0028] Figure 18 This is a schematic diagram of a third assembly of the first, second, and third pipe sections of the heat exchanger tube in an embodiment of this application.

[0029] Figure 19 for Figure 2 Enlarged view of part E in the middle;

[0030] Figure 20 This is a schematic diagram of the heat exchanger in the second embodiment of this application;

[0031] Figure 21 for Figure 20 The main view;

[0032] Figure 22 for Figure 21 Top view;

[0033] Figure 23 for Figure 22 A schematic diagram of the structure of a heat exchange tube;

[0034] Figure 24 To and Figure 23 A schematic diagram of the structure of another heat exchange tube adjacent to the central heat exchange tube;

[0035] Figure 25 for Figure 20 Enlarged view of the middle F section;

[0036] Figure 26 for Figure 22 Enlarged view of the G-section.

[0037] The annotations in the attached figures are explained as follows:

[0038] 101-First manifold; 1011-Annular flange; 102-Second manifold;

[0039] 200 - Heat exchanger tube; 200A - First heat exchanger tube; 200B - Second heat exchanger tube;

[0040] 201 - First pipe section; 2011 - First pipe section; 200a - Bend; 200b - Pipe section; 200c - Horizontal pipe section;

[0041] 202-Second Pipeline Section; 2021-Second Pipeline Section;

[0042] 203 - Third pipe section; 2031 - Annular protrusion; 203a - Port;

[0043] 204 - Connecting pipe section; Third arc-shaped section - 2041; 204A - First connecting pipe section; Third straight pipe section - 2042; 204B - Second connecting pipe section. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] In the embodiments of this application, the terms "first", "second", "third" and other numerical features are used only to distinguish different components and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0046] Please refer to Figure 1-4 , Figure 1 This is a schematic diagram of the structure of the heat exchanger 1000 in the first embodiment of this application; Figure 2 for Figure 1 The main view; Figure 3 for Figure 2 Top view; Figure 4 for Figure 1 A schematic diagram of the structure of a single heat exchange tube 200.

[0047] The heat exchanger 1000 in this embodiment includes a manifold. Figure 1 The diagram shows two parallel manifolds, a first manifold 101 and a second manifold 102. Figure 2 The diagram illustrates the axis X of the second manifold 102, which is also parallel to axis X. The heat exchanger 1000 also includes multiple heat exchange tubes 200 disposed between the first manifold 101 and the second manifold 102. These multiple heat exchange tubes 200 are arranged in parallel and distributed axially. One end of each heat exchange tube 200 is connected to the first manifold 101, and the other end is connected to the second manifold 102. Assuming the first manifold 101 is the inlet pipe and the second manifold 102 is the outlet pipe, the fluid medium can be distributed from the first manifold 101 to the multiple heat exchange tubes 200 for heat exchange, and then converge into the second manifold 102 for outflow. Of course, the first manifold 101 can also be the outlet pipe, and the second manifold 102 can be the inlet pipe; this will not be elaborated further.

[0048] It is worth noting that, unlike traditional straight heat exchange tubes, the heat exchange tube 200 in this embodiment has an irregular shape.

[0049] like Figure 3 , 4 As shown, the heat exchange tube 200 in this embodiment is a single pipe, but it is arranged in two rows. Specifically, the heat exchange tube 200 includes a first row of pipe segments 201 and a second row of pipe segments 202. The first row of pipe segments 201 includes multiple first pipe segments 2011 arranged along a first direction, and these multiple first pipe segments 2011 are not directly connected to each other. The second row of pipe segments 202 includes multiple second pipe segments 2021 arranged along the first direction, and these multiple second pipe segments 2021 are not directly connected to each other. It should be emphasized that the heat exchange tube 200 in this embodiment is a single pipe, and the multiple first pipe segments 2011 and multiple second pipe segments 2021 are all part of this single pipe. The distinguishing naming in this embodiment is beneficial for describing the specific structure of the heat exchange tube 200.

[0050] In this embodiment, the first pipe segment 2011 and the second pipe segment 2021 each have a bend 200a and two pipe segment portions 200b distributed along the first direction. The pipe segment portions 200b and the bend 200a are connected, meaning that the first pipe segment 2011 and the second pipe segment 2021 are not straight pipes. Figure 2 The first pipe segment 2011 and the second pipe segment 2021 shown are both arc-shaped pipe segments, roughly "C"-shaped, that is, roughly semi-circular arcs. At this time, the top of the first pipe segment 2011 or the second pipe segment 2021 is the bend 200a, and the two sides of the bend 200a are the pipe segments 200b (illustrated). Figure 5 The structure and dimensions of the first pipe segment 2011 and the second pipe segment 2021 can be set to be exactly the same. Specifically, the centerlines of the multiple first pipe segments 2011 along their length direction are in one plane, and the centers of the multiple second pipe segments 2021 along their length direction are also in one plane, and these two planes can be set in parallel.

[0051] Continue to refer to Figure 3 , 4 In this embodiment, the first row of pipe segments 201 and the second row of pipe segments 202 are arranged side by side along the second direction, which is perpendicular to the first direction and also perpendicular to the extension direction of the first pipe segment 2011 and the second pipe segment 2021. The extension direction is the orientation of the first pipe segment 2011 and the second pipe segment 2021. In this embodiment, the orientation of the first pipe segment 2011 and the second pipe segment 2021 is C-shaped, and the orthographic projection plane of the C-shape is perpendicular to the second direction.

[0052] In addition, the heat exchange tube 200 also includes a plurality of third tube segments 203 arranged along the first direction. The plurality of third tube segments 203 are not directly connected to each other. One end of each first tube segment 2011 and one end of a second tube segment 2021 are connected through a third tube segment 203. In this way, the first row of tube segments 201 and the second row of tube segments 202 are connected in series to form a pipeline through the plurality of third tube segments 203.

[0053] In specific configuration, one end of each first pipe segment 2011 is connected to one end of a third pipe segment 203, and the other end is connected to one end of another third pipe segment 203; one end of each second pipe segment 2021 is connected to one end of a third pipe segment 203, and the other end of each second pipe segment 2021 is connected to one end of another third pipe segment 203. For example... Figure 2 As shown, the heat exchange tubes 200 are connected in a cyclical manner according to the sequence of first tube segment 2011, third tube segment 203, second tube segment 2021, third tube segment 203, first tube segment 2011, and third tube segment 203, thereby connecting multiple first tube segments 2011, multiple second tube segments 2021, and multiple third tube segments 203 in series into a single pipeline. Depending on the length of the heat exchange tubes 200, the tube segments closest to the manifold in the two rows can be either first tube segment 2011 or second tube segment 2021. Figure 2 In the middle, the pipe sections closest to the manifold in both rows are the first pipe section 2011.

[0054] Please continue to refer to this. Figure 5-6 understand, Figure 5 for Figure 2 A magnified view of part A in the middle; Figure 6 for Figure 4 A magnified view of part B in the middle. Figure 5 , 6 The diagram shows the first pipe section 2011, the second pipe section 2021, and the third pipe section 203.

[0055] In this embodiment, the projection of the heat exchange tube 200 along the second direction intersects with the projections of the first tube segment 2011 and the second tube segment 2021 connected to the same third tube segment 203. At this point, the projections do not completely overlap; only a portion of their projections overlap. Figure 5 The overlapping portion Y of the two projections is shown in brown.

[0056] This setting, combined with Figure 5 , 6 It is understood that, compared to the straight heat exchange tube 200 in the prior art, with the tube diameter and the distance between the two ends of the heat exchange tube 200 remaining unchanged, the path of the heat exchange tube 200 in this embodiment of the application is increased by several times (at least more than 2 times), which can improve the heat exchange efficiency with the airflow.

[0057] Furthermore, the airflow direction of the heat exchanger 1000 with the heat exchange tube 200 is the second direction. Assuming that the airflow flows from one side where the first row of tubes 201 is located to the other side, when the airflow flows through the heat exchanger 1000 in the second direction, since the first tube section 2011 and the second tube section 2021 of the heat exchange tube 200 are arranged in an intersecting manner, the airflow can be strengthened as it passes through the first tube section 2011 and the second tube section 2021 in sequence, thus acting as heat dissipation fins.

[0058] For heat exchangers with finned heat exchangers, the fins are prone to deformation during installation, preventing them from contacting the flat tube and thus hindering their effectiveness. Furthermore, when welding the fins to the flat tube, the solder adheres to the fins, leaving residue after processing. This residue causes surface roughness and absorbs water, affecting drainage and resulting in poor heat exchange. The heat exchange tube 200 in this embodiment functions as its own heat exchange fins, eliminating or reducing the need for fins and mitigating the aforementioned technical problems. Of course, the heat exchange tube 200 in this embodiment can also be equipped with heat exchange fins.

[0059] In detail, the two sides of the pipe segment 200b along the first direction are designated as the first side and the second side. Taking the first pipe segment 2011 as a reference, projected along the second direction, the portion of the projection of the second pipe segment 2021 closest to the pipe segment 200b is located on the first side of the pipe segment 200b, and the portion of the projection of the second pipe segment 2021 is located on the second side of the pipe segment 200b. It can be seen that the first pipe segment 2011 has two pipe segments 200b, and at least one pipe segment 200b has a portion of the projection of the second pipe segment 2021 distributed on both its first and second sides. Similarly, taking the second pipe segment 2021 as a reference, the second pipe segment 2021 has two pipe segments 200b, and at least one pipe segment 200b has a portion of the projection of the first pipe segment 2011 distributed on both its first and second sides. After the airflow passes around the pipe segment 200b, it will again come into contact with the portions of the second pipe segment 2021 located on both sides of the pipe segment 200b, thereby enhancing the turbulence. That is, the projections of the two rows of pipe sections in the second direction do not overlap. In this way, when the airflow passes through the first row of pipe section 201 and the second row of pipe section 202 in sequence along the second direction, it will pass through different structures in sequence, thereby improving the turbulence effect.

[0060] In other words, part of the second pipe section 2021 is located between the two pipe sections 200b of the adjacent first pipe section 2011. In this way, the airflow flowing out from between the two pipe sections 200b may not be able to come into contact with the first pipe section 2011 for heat exchange, but after leaving between the two pipe sections 200b of the first pipe section 2011, it will come into contact with the second pipe section 2021 for heat exchange, thereby improving the heat exchange efficiency.

[0061] Therefore, it can be seen that the heat exchange tube 200 itself can enhance the turbulence and improve the heat exchange effect in this embodiment, so there is no need to install fins. This avoids the problems of poor heat exchange effect caused by fin deformation, improper assembly, and residual brazing filler metal in the fins mentioned in the background art.

[0062] like Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of the second type of heat exchange tube 200 in the embodiments of this application.

[0063] In the first embodiment, the first pipe segment 2011 and the second pipe segment 2021 of the heat exchange tube 200 are generally configured as arc-shaped pipe segments. However, this is not the only embodiment. In some embodiments, the first pipe segment 2011 and the second pipe segment 2021 of the heat exchange tube 200 can also be roughly gate-shaped structures. In this case, the first pipe segment 2011 and the second pipe segment 2021 both include a horizontal pipe segment 200c and a first straight pipe segment located at both ends of the horizontal pipe segment 200c. The first straight pipe segment is a pipe segment portion 200b. The horizontal pipe segment 200c and the pipe segment portion 200b are connected by a bend portion 200a, which is specifically a first arc-shaped segment.

[0064] like Figure 8 As shown, Figure 8 This is a schematic diagram of the structure of the third type of heat exchange tube 200 in the embodiments of this application.

[0065] In some embodiments, the first pipe section 2011 and the second pipe section 2021 of the heat exchange tube 200 are generally U-shaped structures. In this case, both the first pipe section 2011 and the second pipe section 2021 include a bend 200a and a second straight pipe section located at both ends of the bend 200a. The second straight pipe section is a pipe section 200b. In this case, the bend 200a can be a second arc-shaped section.

[0066] It is understandable that the bend 200a is designed to ensure smooth flow of the fluid medium within the first pipe section 2011 and the second pipe section 2021 and to reduce flow resistance. The bend 200a is not limited to an arc-shaped section; for example, it may be a part of an ellipse.

[0067] It can be seen that the structural forms of the first pipe section 2011 and the second pipe section 2021 are not required to be the same. For example, the first pipe section 2011 is... Figure 2 The overall structure shown is an arc-shaped pipe segment, and the second pipe segment 2021 is... Figure 7 The aforementioned gate-shaped structure is thus combined into Figure 9 The structure shown, Figure 9 This is a schematic diagram of the structure of the fourth type of heat exchange tube 200 in the embodiments of this application; for example, the first tube segment 2011 is Figure 2 The overall structure shown is an arc-shaped pipe segment, and the second pipe segment 2021 is... Figure 8The aforementioned U-shaped structure is thus combined into Figure 10 The structure shown, Figure 10 This is a schematic diagram of the structure of the fifth type of heat exchange tube 200 in the embodiments of this application. Figure 2 , 7 The structures of the first pipe segment 2011 and the second pipe segment 2021 in 8 can also be combined and matched. This embodiment does not limit this, as long as the projections of the first pipe segment 2011 and the second pipe segment 2021 in the second direction are arranged to cross each other.

[0068] In the above embodiment, the third pipe segment 203 is specifically an arc-shaped pipe segment, with one end of the arc-shaped pipe segment connected to one end of the first pipe segment 2011 and the other end of the arc-shaped pipe segment connected to one end of the second pipe segment 2021. In the above embodiment, the first row of pipe segments 201 and the second row of pipe segments 202 are arranged in the second direction, which is equivalent to the heat exchange tube 200 having a double-layer structure. The third pipe segment 203 is used to connect these two rows of pipe segments, and the first pipe segment 2011 and the second pipe segment 2021 are arranged crosswise. Therefore, the third pipe segment 203 has a certain angle relative to these two rows of pipe segments.

[0069] like Figure 11 As shown, Figure 11 for Figure 3 A bottom view.

[0070] It can be seen that the third pipe segment 203 is inclined compared to the two rows of pipe segments. The third pipe segment 203 has an angle β with the first direction, and an angle α with the second direction. (This can also be referenced.) Figure 6 Understanding the arrangement of the third pipe segment 203: The third pipe segment 203 is designed as an arc-shaped pipe segment to ensure smooth flow of the fluid medium and reduce flow resistance. In this embodiment, the two ends of the multiple first pipe segments 2011 of the first row of pipe segments 201 are aligned along the first direction, and the two ends of the multiple second pipe segments 2021 of the second row of pipe segments 202 are also aligned along the first direction. Furthermore, the ports of the first row of pipe segments 201 and the second row of pipe segments 202 are also aligned. In this case, the third pipe segment 203 is an arc-shaped pipe segment, allowing for connection with the two rows of pipe segments in a smaller volume. Specifically, the third pipe segment 203 is a semi-circular arc-shaped pipe segment. It can be understood that the third pipe segment 203 is not limited to an arc-shaped pipe segment; it only needs to be able to connect the first pipe segment 2011 and the second pipe segment 2021. For example, the third pipe segment 203 can also be a U-shaped or portal-shaped pipe segment, etc.

[0071] In this embodiment of the application, the third pipe segment 203 and the first pipe segment 2011 and the second pipe segment 2021 of the heat exchange tube 200 can be an integral structure, that is, the first pipe segment 2011, the second pipe segment 2021 and the third pipe segment 203 are formed by bending a single pipe. Such heat exchange tube 200 has better overall integrity.

[0072] Alternatively, the third tube segment 203 of the heat exchange tube 200 can be connected separately from the first tube segment 2011 and the second tube segment 2021, that is, the three can be set up separately and then connected and fixed together. For example Figure 12-14 As shown, Figure 12 This is a schematic diagram of the first assembly of the first pipe section 2011, the second pipe section 2021, and the third pipe section 203 of the heat exchange tube 200 in this application embodiment; Figure 13 for Figure 12 Top view; Figure 14 for Figure 13 A cross-sectional view along the CC direction.

[0073] As mentioned above, the heat exchange tube 200 in this embodiment of the application has an irregular structure with multiple bends. It is easier to process by setting the three tube segments separately and then connecting them separately. The separate connection method is, for example, plug-in fixing, welding fixing, etc. This embodiment of the application does not make specific restrictions. It can be understood that after the separate connection, the sealing should be ensured to meet the requirement of no leakage in the flow of fluid medium in the heat exchange tube 200.

[0074] Figure 13 In this design, the three pipe segments are connected by plug-in joints, which are relatively simple and easy to implement. Specifically, one end of the third pipe segment 203 is plugged into the first pipe segment 2011, and the other end of the third pipe segment 203 is plugged into the second pipe segment 2021. The outer diameter of the ends of the first pipe segment 2011 and the second pipe segment 2021 can be set to be smaller than the inner diameter of port 203a of the third pipe segment 203. This allows the end of the first pipe segment 2011 to be inserted into one port 203a of the third pipe segment 203, and the end of the second pipe segment 2021 to be inserted into the other port 203a of the third pipe segment 203.

[0075] Let's look again. Figure 15-17 , Figure 15 This is a schematic diagram of a second assembly of the first pipe section 2011, the second pipe section 2021, and the third pipe section 203 of the heat exchange tube 200 in this application embodiment; Figure 16 for Figure 15 Top view; Figure 17 for Figure 16 A sectional view along the DD direction.

[0076] Figure 15 and Figure 13 The method is similar, with the three pipe segments connected by plug-in, but in reverse. Specifically, the outer diameter of the ports of the first pipe segment 2011 and the second pipe segment 2021 is set to be larger than the outer diameter of the end of the third pipe segment 203. In this way, one end of the third pipe segment 203 can be inserted into one port of the first pipe segment 2011, and the other end of the third pipe segment 203 can be inserted into one port of the second pipe segment 2021.

[0077] Please continue to refer to this. Figure 18 , Figure 18 This is a schematic diagram of the third assembly of the first pipe section 2011, the second pipe section 2021, and the third pipe section 203 of the heat exchange tube 200 in this application embodiment.

[0078] Figure 18 In the middle, the end faces of both ends of the third pipe section 203 are provided with annular protrusions 2031. The annular protrusion 2031 of one end face is inserted into one port of the first pipe section 2011, and the annular protrusion 2031 of the other end face is inserted into one port of the second pipe section 2021. With this arrangement, the outer surface of the pipeline formed after the first pipe section 2011, the second pipe section 2021, and the third pipe section 203 are assembled can remain flush.

[0079] It can be seen that the annular protrusion is provided on either the first pipe segment 2011 or the second pipe segment 2021, so that it can be inserted into the port of the third pipe segment 203. That is, one end face of the third pipe segment 203 and the first pipe segment 2011 is provided with an annular protrusion, and the annular protrusion is inserted into the end of the other; and / or, one end face of the third pipe segment 203 and the second pipe segment 2021 is provided with an annular protrusion, and the annular protrusion is inserted into the end of the other. After the first pipe segment 2011, the second pipe segment 2021, and the third pipe segment 203 are inserted, they can be further welded and fixed to ensure sealing.

[0080] Please continue to refer to this. Figure 2 , 4 as well as Figure 19 for Figure 2 The enlarged view of section E shows the connecting pipe section 204, the third pipe section 203, and the first pipe section 2011.

[0081] In this embodiment, the heat exchange tube 200 further includes a connecting pipe section 204, located at one end of the heat exchange tube 200. The connecting pipe section 204 includes a third arc-shaped section 2041 and a third straight pipe section 2042 connected in sequence. One end of the third straight pipe section 2042 is used to connect to the manifold of the heat exchanger 1000, and the other end of the third straight pipe section 2042 is connected to one end of the third arc-shaped section 2041. The other end of the third arc-shaped section 2041 is connected to the third pipe section 203. That is, in this embodiment, the two third pipe sections 203 located at the ends of the heat exchange tube 200 are connected at one end to the first pipe section 2011 or the second pipe section 2021, and at the other end to the connecting pipe section 204. The two ends of the remaining third pipe sections 203 are connected to the first pipe section 2011 and the second pipe section 2021, respectively. This arrangement reduces the number of other shaped components and facilitates the processing of the heat exchange tube 200. A third straight pipe section 2042 is provided at the end of the heat exchange tube 203 to facilitate connection with the first manifold 101 or the second manifold 102. Specifically, the third straight pipe section 2042 is set to be perpendicular to the axial direction of the corresponding manifold.

[0082] In some embodiments, the connecting pipe segment 204 is not limited to being connected to the third pipe segment 203, so as to... Figure 2 From a certain perspective, connecting pipe segment 204 can also be directly connected to the first pipe segment 2011, for example. Figure 2 Specifically, by connecting the third pipe section 203, the connection between the connecting pipe section 204 and the first pipe section 2011 becomes smoother, which is conducive to the flow of fluid medium.

[0083] like Figure 2 As shown, the first manifold 101 and the second manifold 102 each have multiple mounting holes along their respective lengths. The mounting holes of the first manifold 101 can be defined as the first mounting holes, and the mounting holes of the second manifold 102 can be defined as the second mounting holes. Each mounting hole has an outwardly extending annular flange 1011 at its edge. The third straight pipe section 2042 of the connecting pipe section 204 of the heat exchange tube 200 can be inserted into the annular flange 1011 of the corresponding manifold and welded to the annular flange 1011. Figure 19 As shown, this facilitates installation and improves welding performance.

[0084] In addition, in this embodiment of the application, the first pipe segment 2011 and the second pipe segment 2021 connected to the same third pipe segment 203 have a distance d in the second direction, such as Figure 13 As shown, this can enhance the turbulence effect, or the first pipe section 2011 and the second pipe section 2021 can also contact each other in the second direction, such as... Figure 3 As shown, the structure of such a heat exchange tube 200 is more compact.

[0085] In this embodiment of the application, the second direction of the arrangement of the two rows of heat exchange tubes 200 in the heat exchanger 1000 is parallel to the axial direction of the manifold. When the heat exchanger 1000 is in use, the second direction of the arrangement of the first row of tubes 201 and the second row of tubes 202 is the air inlet direction, which is the direction of airflow. Figure 1 , 3 As shown, the air intake direction is perpendicular to the axis of the first manifold 101 and the second manifold 102. The plane containing the axis of the first manifold 101 and the second manifold 102 is defined as the first plane. The air intake direction is perpendicular to the first plane, and the second direction is also perpendicular to the first plane. The air intake first passes through the first row of pipes 201 and then through the second row of pipes 202, or first through the second row of pipes 202 and then through the first row of pipes 201. Figure 1 , 3 In the heat exchanger 1000, in the height direction (the height direction is parallel to the axial direction of the first manifold 101 and the second manifold 102), airflows at different heights only pass through one corresponding heat exchange tube 200 when they flow forward.

[0086] Please continue to refer to this. Figure 20-22 , Figure 20 This is a schematic diagram of the structure of the heat exchanger 1000 in the second embodiment of this application; Figure 21 for Figure 20 The main view; Figure 22 for Figure 21 Top view.

[0087] The structure of the heat exchanger 1000 in the second embodiment is basically the same as that in the first embodiment, except that in the second embodiment, the second direction of the two rows of heat exchange tubes 200 is perpendicular to the axis of the manifold. At this time, the air inlet direction is parallel to the axes of the first manifold 101 and the second manifold 102. The air inlet direction is parallel to the first surface, and the second direction is also parallel to the first surface. Thus, it can be referred to... Figure 21 As shown, the airflow passes through multiple heat exchange tubes 200 sequentially during its flow, which improves heat exchange efficiency. In actual installation, whether the second direction is parallel or perpendicular to the axis of the manifold can be selected according to specific installation requirements.

[0088] In addition, please continue to combine Figure 20 and refer to Figure 23 , 24 understand, Figure 23 for Figure 22 A schematic diagram of the structure of a heat exchange tube 200 in the image; Figure 24 To and Figure 23 A schematic diagram of the structure of another heat exchange tube 200 adjacent to the middle heat exchange tube 200.

[0089] from Figure 23 , 24 It can be seen that two adjacent heat exchange tubes 200 are arranged parallel to the axis of the manifold in the second direction. However, in this embodiment, at least one set of two adjacent heat exchange tubes 200 are arranged at 180° on a plane perpendicular to the second direction. Specifically, the two ends of these two adjacent heat exchange tubes 200 are defined as the first end and the second end, respectively. The two heat exchange tubes 200 are the first heat exchange tube and the second heat exchange tube, respectively. The two heat exchange tubes 200 have the same structure. The first end of the first heat exchange tube is connected to the first manifold 101, and the second end is connected to the second manifold 102. The first end of the second heat exchange tube is connected to the second manifold 102, and the second end is connected to the first manifold 101. That is, the first heat exchange tube rotated 180° around the second direction becomes the second heat exchange tube 200B.

[0090] With this setting, such as Figure 25 , 26 As shown, Figure 25 for Figure 20 Enlarged view of the middle F section; Figure 26 for Figure 22Enlarged view of section G. A third direction is defined, perpendicular to both the first and second directions. Two adjacent heat exchange tubes 200 are positioned at 180° to each other on a plane perpendicular to the second direction. The first tube segment 2011 of one tube and the first tube segment 2011 of the other tube face opposite directions in the third direction, and the second tube segment 2021 of one tube and the second tube segment 2021 of the other tube also face opposite directions in the third direction. Thus, as the airflow passes through these two heat exchange tubes 200 sequentially, it experiences different disturbances, further enhancing the turbulence effect and thus improving the heat exchange efficiency.

[0091] like Figure 21 As shown, the lengths of the connecting pipe segments 204 at both ends of the heat exchange tube 200 are not equal in the first direction. The longer connecting pipe segment 204 at the first end is defined as the first connecting pipe segment 204A, and the shorter connecting pipe segment 204 at the second end is defined as the second connecting pipe segment 204B. When two adjacent first heat exchange tubes 200A and second heat exchange tubes 200B are connected to the manifold, the second connecting pipe segment 204B of the first heat exchange tube 200A is connected to the first manifold 101, and the first connecting pipe segment 204A of the second heat exchange tube 200B is connected to the first manifold 101. It is connected to the first manifold 101, so that in the first direction, the first heat exchange tube 200A and the second heat exchange tube 200B are staggered. The length difference between the first connecting pipe section 204A and the second connecting pipe section 204B is designed so that the second pipe section 2021 of the first heat exchange tube 200A and the first pipe section 2011 of the second heat exchange tube 200B are arranged facing each other in the second direction, and in the third direction, the orientation of the first pipe section 2011 of the first heat exchange tube 200A and the second pipe section 2021 of the second heat exchange tube 200B is opposite.

[0092] In the above embodiments, the second direction of the two rows of heat exchange tubes 200 is parallel or perpendicular to the axis of the manifold. It can be understood that the heat exchange tubes 200 can also be inclined relative to the axis, that is, the second direction and the axis of the manifold can also have an angle greater than 0° and less than 90°. Specifically, the specific angle of the heat exchange tubes 200 relative to the manifold can be selected according to the spatial arrangement and the direction of airflow. This will not be discussed further here.

[0093] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A heat exchange tube (200), characterized in that, The heat exchange tube (200) includes a first row of tubes (201) and a second row of tubes (202). The first row of tubes includes a plurality of first tubes (2011) arranged along a first direction, and the second row of tubes (202) includes a plurality of second tubes (2021) arranged along the first direction. The first row of tubes (201) and the second row of tubes (202) are arranged side by side along a second direction, which is perpendicular to the first direction. It also includes multiple third pipe segments (203) arranged along the first direction; One end of each of the first pipe segments (2011) and one end of the adjacent second pipe segment (2021) are connected by the third pipe segment (203); the first pipe segment (201) and the second pipe segment (202) are connected in series by multiple third pipe segments (203) to form a single pipeline; The projections of the first pipe segment (2011) and the second pipe segment (2021) connected to the same third pipe segment (203) along the second direction are arranged intersecting in the first direction.

2. The heat exchange tube (200) according to claim 1, characterized in that, The first pipe segment (2011) has a bend (200a) and two pipe segments (200b) distributed along a first direction, the pipe segments (200b) and the bend (200a) being connected; the two sides of the pipe segment (200b) along the first direction are defined as a first side and a second side, and projected along the second direction, at least one of the pipe segments (200b) of the first pipe segment (2011) has a portion of the projection of the second pipe segment (2021) distributed on both the first side and the second side; And / or, the second pipe segment (2011) has a bend (200a) and two pipe segments (200b) distributed along a first direction, the pipe segments (200b) and the bend (200a) being connected; the two sides of the pipe segment (200b) along the first direction are defined as a first side and a second side, and projected along the second direction, at least one of the pipe segments (200b) of the second pipe segment (2021) has a portion of the projection of the first pipe segment (2011) distributed on both the first side and the second side.

3. The heat exchange tube (200) according to claim 2, characterized in that, At least one of the first pipe segment (2011) and the second pipe segment (2021) is an arc-shaped pipe segment in its entirety, the top of the arc-shaped pipe segment is the bend (200a), and the two sides of the arc-shaped pipe segment are the pipe segment portions (200b). Alternatively, at least one of the first pipe segment (2011) and the second pipe segment (2021) includes a horizontal pipe segment and a first straight pipe segment located at both ends of the horizontal pipe segment, the first straight pipe segment being the pipe segment portion (200b), the horizontal pipe segment and the first straight pipe segment being connected by the bend portion (200a), the bend portion (200a) being a first arc-shaped segment; Alternatively, at least one of the first pipe segment (2011) and the second pipe segment (2021) includes a second arc-shaped segment and a second straight pipe segment located at both ends of the second arc-shaped segment, wherein the second straight pipe segment is the pipe segment portion (200b) and the second arc-shaped segment is the curved portion (200a).

4. The heat exchange tube (200) according to claim 1, characterized in that, The third pipe segment (203) is an arc-shaped pipe segment. One end of the third pipe segment (203) is connected to one end of the first pipe segment (2011), and the other end of the third pipe segment (203) is connected to one end of the second pipe segment (2021).

5. The heat exchange tube (200) according to claim 1, characterized in that, The first pipe section (2011) and the second pipe section (2021) have the same structure and size; or, the first pipe section (2011) and the second pipe section (2021) have different structures.

6. The heat exchange tube (200) according to any one of claims 1-5, characterized in that, The third pipe segment (203) is an integral structure with the first pipe segment (2011) and the second pipe segment (2021); or, the third pipe segment (203) is separately arranged and connected and fixed with the first pipe segment (2011) and the second pipe segment (2021).

7. The heat exchange tube (200) according to claim 6, characterized in that, One end of the third pipe segment (203) is connected to the first pipe segment (2011), and the other end of the third pipe segment (203) is connected to the second pipe segment (2021).

8. The heat exchange tube (200) according to claim 7, characterized in that, One end of the first pipe segment (2011) is inserted into the port of one end of the third pipe segment (203), and one end of the second pipe segment (2021) is inserted into the port of the other end of the third pipe segment (203); Alternatively, one end of the third pipe segment (203) is inserted into the port of one end of the first pipe segment (2011), and the other end of the third pipe segment (203) is inserted into the port of one end of the second pipe segment (2021); Alternatively, either the first pipe segment (2011) or the third pipe segment (203) may have an annular protrusion on its end face, the annular protrusion being inserted into the port of the third pipe segment (203); Alternatively, the end face of the third pipe segment (203) is provided with an annular protrusion, which is inserted into the port of one end of the first pipe segment (2011) or into the port of one end of the second pipe segment (2021).

9. The heat exchange tube (200) according to any one of claims 1-5, characterized in that, The heat exchange tube (200) also includes a connecting pipe section; The connecting pipe section (204) includes a third arc-shaped section (2041) and a third straight pipe section (2042) connected in sequence. One end of the third straight pipe section (2042) is used to connect to the manifold of the heat exchanger. The other end of the third straight pipe section (2042) is connected to one end of the third arc-shaped section (2041), and the other end of the third arc-shaped section (2041) is connected to one end of the third pipe section (203).

10. The heat exchange tube (200) according to any one of claims 1-5, characterized in that, The first pipe segment (2011) and the second pipe segment (2021) connected to the same third pipe segment (203) have a distance between them in the second direction or are in contact with each other.

11. A heat exchanger, characterized in that, It includes a first manifold (101) and a second manifold (102), and a plurality of heat exchange tubes (200) disposed between the first manifold (101) and the second manifold (102), wherein the heat exchange tubes (200) are the heat exchange tubes (200) as described in any one of claims 1-10.

12. The heat exchanger according to claim 11, characterized in that, The second direction in which at least one of the first row of tubes (201) and the second row of tubes (202) of the heat exchange tube (200) are arranged side by side is parallel to the axis of the manifold; Alternatively, at least one of the first row of tubes (201) and the second row of tubes (202) of the heat exchange tube (200) are arranged side by side in the second direction, which is perpendicular to the axis of the manifold; Alternatively, at least one of the first row of tubes (201) and the second row of tubes (202) of the heat exchange tube (200) are arranged side by side in the second direction, and have an angle α with the axial direction of the manifold, wherein 0°<α<90°.

13. The heat exchanger according to claim 12, characterized in that, The second direction in which the first row of tubes (201) and the second row of tubes (202) of at least one set of two adjacent heat exchange tubes (200) are arranged side by side is parallel to the axis of the manifold; Furthermore, the two adjacent heat exchange tubes (200) have the same structure and size, and each has a first end and a second end. The two heat exchange tubes (200) are a first heat exchange tube (200A) and a second heat exchange tube (200B). The first end of the first heat exchange tube (200A) is connected to the first manifold (101), and the second end of the first heat exchange tube (200A) is connected to the second manifold (102). The first end of the second heat exchange tube (200B) is connected to the second manifold (102), and the second end of the second heat exchange tube (200B) is connected to the first manifold (101).

14. The heat exchanger according to claim 13, characterized in that, Both the first heat exchange tube (200A) and the second heat exchange tube (200B) have a first connecting pipe section (204A) connected to the first manifold (101) and a second connecting pipe section (204B) connected to the second manifold (102). The lengths of the first connecting pipe section (204A) and the second connecting pipe section (204B) are not equal in a first direction. The first pipe section (2011) of the first heat exchange tube (200A) and the second pipe section (2021) of the second heat exchange tube (200B) are arranged facing each other along a third direction, which is perpendicular to the first direction and the second direction.

Images