Heat exchanger

Abstract

The invention discloses a heat exchanger which can improve the heat exchange efficiency. The heat exchanger comprises a first collecting pipe, a second collecting pipe and a plurality of heat exchange pipes located between the first collecting pipe and the second collecting pipe, one end of each heat exchange pipe is connected with the first collecting pipe, and the other end of each heat exchange pipe is connected with the second collecting pipe. The multiple heat exchange pipes are arranged in the first direction. The heat exchange pipe comprises a plurality of bent pipe sections, the bent pipe sections are arranged in the second direction, the direction from one end to the other end of the heat exchange pipe is the second direction, and the first direction is perpendicular to the second direction; and the projection of one heat exchange tube and the projection of the other heat exchange tube in at least one group of two adjacent heat exchange tubes are arranged in a staggered manner in the second direction.

Description

Technical Field

[0001] This application relates to the field of heat exchange equipment technology, specifically to 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 exchanger that can improve the heat exchange efficiency.

[0004] To solve the above-mentioned technical problems, this application provides a heat exchanger, including a first manifold, a second manifold, and a plurality of heat exchange tubes located between the first manifold and the second manifold, wherein one end of each heat exchange tube is connected to the first manifold and the other end is connected to the second manifold; the plurality of heat exchange tubes are arranged along a first direction; The heat exchange tube includes multiple curved tube segments arranged along a second direction. The direction from one end of the heat exchange tube to the other end is the second direction. The first direction and the second direction are perpendicular. When projected along the first direction, in at least one set of two adjacent heat exchange tubes, the projection of one and the projection of the other are at least partially offset in the second direction.

[0005] In this design, the projections of two adjacent heat exchange tubes along the first direction are staggered along the second direction. This allows for enhanced turbulence on the airflow as it passes through the heat exchange tubes, thereby improving heat exchange efficiency. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the heat exchanger in the first embodiment of this application; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 Top view; Figure 4 for Figure 3 A schematic diagram of the structure of a heat exchange tube; Figure 5 for Figure 1 A schematic diagram of the structure of a heat exchange tube; Figure 6 for Figure 3 Enlarged view of part A in the middle; Figure 7 is a structural schematic view of another heat exchange tube in the embodiment of the present application; Figure 8 is a structural schematic view of a heat exchanger in the second embodiment of the present application; Figure 9 is a front view of Figure 8 ; Figure 10 is a right view of Figure 9 ; Figure 11 is a structural schematic view of a heat exchanger in the third embodiment of the present application; Figure 12 is a front view of Figure 11 ; Figure 13 is a structural schematic view of a heat exchange tube in Figure 11 ; Figure 14 is a top view of a heat exchange tube in Figure 11 ; Figure 15 is a schematic view of a heat exchange tube in Figure 14 in a third direction air inlet case; Figure 16 is a structural schematic view of a heat exchanger in the fourth embodiment of the present application; Figure 17 is a top view of Figure 16 ; Figure 18 is a structural schematic view of a heat exchange tube in Figure 16 ; Figure 19 is a top view of a heat exchange tube in Figure 16 ; Figure 20 is a right view of a heat exchange tube in Figure 19 ; Figure 21 is a structural schematic view of a heat exchange tube in the fifth embodiment of the present application; Figure 22 is a top view of a heat exchange tube in Figure 21 ; Figure 23 is a right view of Figure 22 .

[0007] Reference signs: 1000 - heat exchanger; 101 - first collecting pipe; 102 - second collecting pipe; 1011 - annular flange; 200 - heat exchange tube; 2001 - curved tube segment; 201 - wave-shaped tube segment; 201a - wave-peak tube segment; 201b - wave-trough tube segment; 201A - first arc-shaped tube segment; 201B - first straight tube segment; 2001A - first curved tube segment; 2001B - second curved tube segment; 2001a - first cross tube segment; 2001b - second cross tube segment; 202 - connecting tube segment; 202A - first connecting tube segment; 202B - second connecting tube segment; 2021 - second straight tube segment; 203 - spiral-shaped tube segment; 2031 - spiral coil tube segment; 20311 - third straight tube segment; 20312 - third arc-shaped tube segment; 20313 - fourth straight tube segment; 20314 - fifth straight tube segment; 20315 - fourth arc-shaped tube segment; 200A - first tube segment part; 200B - second tube segment part. DETAILED DESCRIPTION

[0008] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0009] In the embodiments of the present application, the terms "first", "second", "third" and the like containing numerical features are only used to distinguish different features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0010] Reference is made to Figures 1-3 It is understood that Figure 1 is a structural schematic diagram of a heat exchanger 1000 in a first embodiment of the present application; Figure 2 is Figure 1 a front view; Figure 3 is Figure 1 a top view; Figure 4 is Figure 3 a structural schematic diagram of one heat exchange tube 200 in the heat exchanger 1000.

[0011] The heat exchanger 1000 in this embodiment includes a first header 101, a second header 102, and a plurality of heat exchange tubes 200 located between the first header 101 and the second header 102. One end of each heat exchange tube 200 is connected to the first header 101, and the other end is connected to the second header 102. Assuming that the first header 101 is an inlet pipe and the second header 102 is an outlet pipe, the fluid medium can be distributed from the first header 101 to the plurality of heat exchange tubes 200 for heat exchange, and then gathered into the second header 102 for outflow. The fluid medium can be refrigerant or other types of medium. Of course, the first header 101 can also be an outlet pipe and the second header 102 can be an inlet pipe, which will not be described in detail.

[0012] Figure 2In this embodiment, the first manifold 101 and the second manifold 102 are arranged in parallel, and the axis X of the second manifold 102 is shown. The axis X of the second manifold 102 is parallel to the axis X of the first manifold 101, and the extension direction of the axis X is the axial direction of the manifold. In this embodiment, the multiple heat exchange tubes 200 are arranged along the first direction, and the multiple heat exchange tubes 200 are also arranged in parallel to each other. At this time, the first direction is also a direction parallel to the axial direction.

[0013] It is understandable that, in some application environments, the first manifold 101 and the second manifold 102 do not necessarily have to be parallel to each other. For example, the upper ends of the first manifold 101 and the second manifold 102 may be relatively close to each other and the lower ends may be relatively far apart, forming a figure-eight shape. In this case, the first direction in which the multiple heat exchange tubes 200 are arranged will have an angle with the axis of the manifold. To accommodate the change in the axial spacing between the two manifolds, the length of each heat exchange tube 200 may not be equal. Alternatively, the first manifold 101 and the second manifold 102 may be arranged parallel to each other, but at an angle with the first direction. The length of each heat exchange tube 200 may be set to be equal, and the structure and dimensions of the multiple heat exchange tubes 200 may be set to be the same. Figure 2 The structure and dimensions of each heat exchange tube 200 are also set in the same way.

[0014] It is worth noting that, unlike the straight flat tubes mentioned in the background art, the heat exchange tube 200 in this embodiment includes multiple curved tube segments 2001. These curved tube segments 2001 are arranged along a second direction, with the direction from one end of the heat exchange tube 200 to the other being the second direction. The first direction and the second direction are perpendicular. The curved tube segments 2001 are not straight but bent, and their surfaces are all curved. Figure 3 Multiple curved pipe segments 2001 are sequentially connected to form an integral pipeline. It can be seen that each curved pipe segment 2001 can also be manufactured separately and then connected to other curved pipe segments 2001 to form a whole. Of course, sealing must be ensured after connection. Furthermore, multiple curved pipe segments 2001 can be continuously connected or connected through other pipe segments, such as a straight pipe segment between two adjacent curved pipe segments 2001. However, in this embodiment, curved pipe segments 2001 are used to increase the flow path of the fluid medium; therefore, continuous arrangement of multiple curved pipe segments 2001 is more effective.

[0015] Furthermore, the projection of the bent section 2001 of the heat exchange tube 200 along the first direction is also a bent surface. Combined with... Figure 4 And refer to Figure 5 understand, Figure 5 for Figure 1 A schematic diagram of the structure of a heat exchange tube 200.

[0016] The curved pipe section 2001 has a center axis M extending along the extension direction thereof, and the center axis M of the plurality of curved pipe sections 2001 are all located in one plane, i.e. the plurality of curved pipe sections 2001 form a straight row, so that space can be saved and processing is easy.

[0017] Specifically, the curved pipe section 2001 has a center axis M (shown in Figure 4 、 5 ) extending along the length direction thereof, and the center axis M is a line connecting the centers of each cross section of the heat exchange pipe 200. Since the heat exchange pipe 200 has a curved pipe section 201, the center axis M of the heat exchange pipe 200 is not a straight line but a curve, and the plane where the curve is located is the first plane S. Therefore, the first plane S and the first direction are not parallel, Figure 2 In the curved pipe section 2001, the first plane S where the center axis M is located and the first direction are perpendicular to each other, and the first plane S and the second direction and the third direction are parallel.

[0018] In addition, please refer to Figure 2 、 3 , and Figure 6 , Figure 6 is an enlarged view of the A part in Figure 3 .

[0019] In the projection along the first direction, the projection of one of the at least one group of two adjacent heat exchange pipes 200 and the projection of the other are partially arranged in the second direction. Since the heat exchange pipe 200 is a single pipe, for the heat exchange pipe 200 having a plurality of curved pipe sections 2001, part of the projections are arranged in the second direction, and part of the projections overlap. At the overlapping position, the projections of the two cross each other. Figure 6 In the curved pipe section 2001, one curved pipe section 2001 of one heat exchange pipe 200 is shown, which can be defined as the first curved pipe section 2001A, and another curved pipe section 2001 of another heat exchange pipe 200 is also shown, which can be defined as the second curved pipe section 2001B. The projections of the two curved pipe sections 2001 along the first direction partially overlap, and the overlapping projection part is shown in black.

[0020] In this way, on the one hand, compared with the heat exchange pipe 200 being a straight flat tube in the background art, in the case that the pipe diameter and the distance between the two ends of the heat exchange pipe 200 remain unchanged, the heat exchange pipe 200 in the embodiment of the present application is provided with a plurality of curved pipe segments 2001, so that the path for the fluid medium to flow in the heat exchange pipe 200 is increased, and the heat exchange efficiency with the air flow can be improved. On the other hand, in this embodiment, the projections of at least one group of adjacent heat exchange pipes 200 are partially staggered in the second direction, so that the air inlet direction of the heat exchanger 1000 in specific application can be the first direction, and then the air inlet can flow through the plurality of heat exchange pipes 200 in turn. The cross-arranged heat exchange pipes 200 can strengthen the flow disturbance and play the role of heat dissipation fins. Here, reference is made to the description of the above Figure 6 Because the first plane S is verified to be perpendicular to the first direction or to have an included angle, the area in contact with the air flow will be larger, and the heat exchange effect is guaranteed.

[0021] In detail, the curved pipe segments 2001 of the two heat exchange pipes 200 are respectively a first curved pipe segment 2001A and a second curved pipe segment 2001B. In the position of the projection cross-overlapping, the pipe segment of the heat exchange pipe 200 corresponding to the cross-overlapping position is defined as a cross pipe segment, Figure 6 In the cross pipe segment, the pipe segment of the first curved pipe segment 2001A corresponding to the position of the two projection cross-overlapping is defined as a first cross pipe segment 2001a and a second cross pipe segment 2001b. Then, the two sides of the cross pipe segment along the second direction are defined as a first side and a second side. Then, along the first direction projection, with the first curved pipe segment 2001A as the reference, when projected along the first direction, the part of the second curved pipe segment 2001B is located on the first side of the first cross pipe segment 2001a of the first curved pipe segment 2001A, and another part of the second curved pipe segment 2001B is projected on the second side of the first cross pipe segment 2001b. Similarly, the part of the second curved pipe segment 2001B is also located on the first side of the second cross pipe segment 2001a of the first curved pipe segment 2001A, and another part of the second curved pipe segment 2001B is projected on the second side of the second cross pipe segment 2001b of the first curved pipe segment 2001A. Then, after the air flow passes through the cross pipe segment of one heat exchange pipe 200, it will again contact the part of another heat exchange pipe 200 located on the two sides of the cross pipe segment, thereby strengthening the flow disturbance. That is, the projections of the two heat exchange pipes 200 in the first direction do not completely overlap, so that when the air flow flows through the plurality of heat exchange pipes 200 in turn along the first direction, it will pass through different structures in turn, the contact heat exchange area is increased, and the flow direction also changes at the same time, thereby improving the flow disturbance effect.

[0022] From another angle, because the projections of the two heat exchange pipes 200 along the first direction are cross-arranged, at least part of the area not covered by the pipe body of one heat exchange pipe 200 will be covered by the pipe body of another heat exchange pipe 200. For example, Figure 6As shown, the region between the two first straight pipe segments 201B of the wave crest pipe segment 201a of the first curved pipe segment 2001A is an uncovered region, and the portion of the wave crest pipe segment 201a of the second curved pipe segment 2001B is located in this region. In this way, when the air flow flows to one heat exchange pipe 200, the portion of the air flow that does not contact the heat exchange pipe 200 will contact the next heat exchange pipe 200 when flowing to the downstream heat exchange pipe 200, which is equivalent to increasing the contact area with the air flow, thereby improving the heat exchange efficiency.

[0023] As described above, the arrangement of the heat exchange pipe 200 in the present embodiment can strengthen the turbulence and improve the heat exchange effect. For a heat exchanger provided with heat dissipation fins, the heat dissipation fins are prone to deformation during installation, which can cause the heat dissipation fins to fail to contact the flat tube and thus fail to effectively play the role of the heat dissipation fins. Moreover, when the heat dissipation fins are welded to the flat tube, the filler metal used for welding is attached to the fins, and the fins can also have residual flux after processing, which can cause the surface to be rough and can cause the residual flux to absorb water and thus affect the drainage of the fins, resulting in poor heat exchange effect. The structure of the heat exchange pipe 200 in the present embodiment can play the role of the heat dissipation fins, thereby eliminating or reducing the need to provide heat dissipation fins, and thus the above technical problems caused by the provision of heat dissipation fins can be reduced. Of course, the heat exchange pipe 200 in the present embodiment can also be provided with heat dissipation fins.

[0024] As shown in the drawings, Figure 4 The heat exchange pipe 200 in the present embodiment specifically includes a wave-shaped pipe segment 201, and the curved pipe segment 2001 is generally S-shaped, and a plurality of curved pipe segments 2001 are continuously connected along the second direction to form a wave shape. The wave-shaped pipe segment 201 includes a plurality of wave crest pipe segments 201a and a plurality of wave trough pipe segments 201b alternately distributed along the second direction. The first plane S and the direction perpendicular to the second direction is the third direction, the wave crest pipe segment 201a and the wave trough pipe segment 201b are both convex along the third direction, and the convex directions of the two are opposite, Figure 4 As shown in the drawings, the wave crest pipe segment 201a and the wave trough pipe segment 201b are shown, and the dividing line L of the wave crest pipe segment 201a and the wave trough pipe segment 201b is shown in Figure 4 The dividing line L is also the center line of the entire heat exchange pipe 200 extending in the second direction, the wave crest pipe segment 201a and the wave trough pipe segment 201b have equal dimensions in the third direction, and the dividing line L is a straight line extending along the second direction, so that the curved pipe segments 201 located on both sides of the dividing line L have equal dimensions in the third direction. A set of adjacent wave crest pipe segments 201a and wave trough pipe segments 201b can be defined as a curved pipe segment 2001. The wave-shaped pipe segment 201 is convenient to process and can be directly bent and formed from a straight pipe. Of course, it can also be formed by stretching, casting, etc., and the present embodiment does not make specific limitations.

[0025] Specifically in the embodiment, the wave crest pipe section 201a and the wave trough pipe section 201b are both U-shaped, and each includes a first arc-shaped pipe section 201A and a first straight pipe section 201B. The first arc-shaped pipe section 201A is configured to facilitate smooth flow of the fluid medium in the heat exchange pipe 200 and reduce flow resistance. The first straight pipe section 201B is configured to prevent stress concentration of the wave-shaped pipe section 201 of the heat exchange pipe 200 in the case of multiple bending, thereby facilitating guarantee of the strength and impact resistance of the heat exchange pipe 200. It can be understood that the arrangement mode of the first straight pipe section 201B and the first arc-shaped pipe section 201A is not limited to this, Figure 4 In some embodiments, the first straight pipe section 201B is arranged perpendicularly to the second direction. In fact, the first straight pipe section 201B can also be arranged obliquely relative to the second direction, that is, the wave crest pipe section 201a and the wave trough pipe section 201b can be substantially V-shaped, but the V-shaped end is not pointed but arc-shaped. This wave-shaped pipe section is also possible.

[0026] Of course, the structure of the adjacent wave crest pipe section 201a and wave trough pipe section 201b is not limited to be U-shaped, for example, Figure 7 as shown, Figure 7 is a structural schematic diagram of another heat exchange pipe 200 in the embodiment, Figure 7 to show the wave crest pipe section 201a and the wave trough pipe section 201b.

[0027] In some embodiments, the wave crest pipe section 201a and the wave trough pipe section 201b can also only include the first arc-shaped pipe section 201A. In this case, the curved pipe section 2001 is also S-shaped, which is slightly different from the curved pipe section 2001 shown in Figure 4 In this case, the heat exchange pipe 200 can be reduced in size in the third direction.

[0028] Looking at Figures 2-4 the heat exchange pipe 200 in the embodiment includes a first connecting pipe section 202A and a second connecting pipe section 202B. The two connecting pipe sections 202 are respectively located at two ends of the heat exchange pipe 200. The connecting pipe section 202 includes a second straight pipe section 2021 and a second arc-shaped pipe section. The second arc-shaped pipe section is used to connect the curved pipe section 2001, so that the connection between the connecting pipe section 202 and the curved pipe section 2001 is smooth, and flow resistance is reduced. The second straight pipe section 2021 of the connecting pipe section 202 can be connected to the corresponding first manifold 101 or second manifold 102. The connection of the straight pipe section is easy to implement.

[0029] The first manifold 101 and the second manifold 102 are each provided with a plurality of mounting holes (not shown in the figure) in the length direction. The mounting holes of the first manifold 101 can be defined as first mounting holes, and the mounting holes of the second manifold 102 can be defined as second mounting holes. The edge of each mounting hole is provided with an annular flange 1011 extending outwardly (shown in Figure 3The second straight pipe section 2021 of the connecting pipe section 202 of the heat exchange pipe 200 can be inserted into the annular flange 1011 of the corresponding collecting pipe and welded with the annular flange 1011, which facilitates installation and improves the welding performance.

[0030] In addition, in some embodiments, at least two adjacent heat exchange pipes 200 are arranged at 180° in the first plane S. In detail, the two heat exchange pipes 200 are completely identical in structure and size, the first connecting pipe section 202A and the second connecting pipe section 202B of one heat exchange pipe 200 are connected with the first collecting pipe 101 and the second collecting pipe 102 respectively, and the first connecting pipe section 202A and the second connecting pipe section 202B of the other heat exchange pipe 200 are connected with the second collecting pipe 102 and the first collecting pipe 101 respectively, i.e., the first heat exchange pipe 200 is rotated at 180° in the first direction to become the second heat exchange pipe 200.

[0031] As shown in Figure 2 , 3 , the lengths of the first connecting pipe section 202A and the second connecting pipe section 202B in the second direction are not equal, and the length of the second connecting pipe section 202B is greater than that of the first connecting pipe section 202A. In this way, two heat exchange pipes 200 with the same structure and size can be installed at 180° to each other between the first collecting pipe 101 and the second collecting pipe 102 to realize the staggered arrangement of the two heat exchange pipes 200 in the second direction.

[0032] It can be understood that, in order to realize the staggered arrangement in the second direction to meet the cross arrangement when projected in the first direction, the two adjacent heat exchange pipes 200 can also be arranged in other manners. For example, the length of the wave-shaped pipe section 201 of one heat exchange pipe 200 is longer, the lengths of the two connecting pipe sections 202 are equal but shorter, the length of the wave-shaped pipe section 201 of the other heat exchange pipe 200 is shorter, and the lengths of the two connecting pipe sections 202 are equal but longer. It is also possible. However, compared with the above-mentioned arrangement of the two connecting pipe sections 202 with unequal lengths, only one kind of heat exchange pipe 200 with the same structure and size needs to be processed, and the processing is simpler.

[0033] In addition, the second straight pipe section 2021 of the connecting pipe section 202 is arranged staggered with the center line of the heat exchange pipe 200 extending in the second direction, as shown in Figure 4 , the second straight pipe section 2021 axis has a spacing with the dividing line L of the wave-shaped pipe section 201 (i.e., the center line of the heat exchange pipe 200) in the third direction. This arrangement makes the curved pipe section 2001 of one heat exchange pipe 200 staggered with the curved pipe section 2001 of the other heat exchange pipe 200 not only in the second direction but also in the third direction after the one heat exchange pipe 200 is rotated at 180° relative to the other heat exchange pipe 200 in the first plane S, as shown in Figure 3As shown, this can further increase the disturbance of the air flow, increase the contact area with the air flow, so as to improve the heat exchange effect.

[0034] The first and second collecting pipes 101 and 102 in the above embodiment are arranged in parallel, and the first plane S in which the central axes M of the heat exchange pipes 200 are located is perpendicular to the axial direction of the first and second collecting pipes 101 and 102. However, it is known that in some embodiments, the first plane S in which the central axes M of the heat exchange pipes 200 are located can be arranged obliquely to the axial direction of the first and second collecting pipes 101 and 102, that is, there is an included angle φ between the axial direction and the first plane S, and the included angle φ is greater than 0° and less than 90°.

[0035] As shown in Figures 8-10 , Figure 8 is a structural schematic diagram of a heat exchanger 1000 in a second embodiment of the present application; Figure 9 is a front view of Figure 8 ; Figure 10 is a right view of Figure 9 .

[0036] In the second embodiment, the first direction in which the heat exchange pipes 200 are arranged is still parallel to the axial direction of the first and second collecting pipes 101 and 102, but the included angle φ between the first plane S in which the central axes M of the heat exchange pipes 200 are located and the axial direction is 45°. In this way, under the premise that the heat exchange pipes 200 have the same path length, the size of the heat exchange pipes 200 in the third direction is reduced, so that the heat exchange pipes 200 can be arranged to be thinner. Moreover, after being arranged in this way, the projections of two adjacent heat exchange pipes 200 in the third direction can also be arranged to be partially staggered. In this way, whether the air flows in the first direction or the third direction, a good heat exchange effect can be achieved.

[0037] The curved pipe section 2001 of the heat exchange pipe 200 in the embodiment of the present application is a smooth bent pipe section, which can be bent once or more than once. In addition to the S shape, the structure of the curved pipe section 2001 is obviously various, and can be set according to actual needs. The following continues to describe embodiments of the heat exchange pipe 200 with a curved pipe section 2001 of other structure.

[0038] As shown in Figures 11-14 , Figure 11 is a structural schematic diagram of a heat exchanger 1000 in a third embodiment of the present application; Figure 12 is a front view of Figure 11 ; Figure 13 is a right view of Figure 11 ; Figure 14 is a structural schematic diagram of a heat exchange pipe 200 in Figure 11 ;

[0039] The heat exchange tube 200 of the heat exchanger 1000 in the third embodiment is in a spiral shape, and the heat exchange tube 200 comprises a spiral tube segment 203, and the spiral tube segment 203 comprises a plurality of non-closed spiral coil tube segments 2031 connected in sequence. Since the plurality of spiral coil tube segments 2031 are connected in sequence and distributed along the second direction, the ending position of one spiral coil tube segment 2031 is connected with the starting position of an adjacent spiral coil tube segment 2031, and therefore the starting position and the ending position of each spiral coil tube segment 2031 are staggered in the second direction. The spiral coil tube segment 2031 is not a closed ring, and each spiral coil tube segment 2031 is the curved tube segment 2001 mentioned in the embodiments of the present application. That is, the spiral tube segment 203 is formed by a plurality of curved tube segments 2001 connected in sequence, and the heat exchange tube 200 at this time is similar to a spiral spring structure. Like the wave-shaped tube segment 201, the spiral tube segment 203 can also be formed by bending a pipe or can be provided in a split manner.

[0040] Like the effect principle of the first embodiment, the projections of the two adjacent spiral heat exchange tubes 200 in the first direction are partially staggered and arranged in a cross manner, and therefore the turbulence can be enhanced and the heat exchange efficiency can be improved. At the same time, as shown in Figure 15 Figure 15 Figure 14 is a schematic view of the heat exchange tube in the third direction under the condition of air inlet.

[0041] As shown in Figure 15 , the center line N of the overall spiral tube segment 203 is shown, and for the spiral tube segment 203, the center line N is also the axis of the spiral. A plane passing through the center line N and parallel to the first direction divides the spiral tube segment 203 into two parts, and one part is arranged staggered in the third direction from the other part. Therefore, the heat exchanger 1000 with the heat exchange tube 200 having this structure can be applied to air inlet in the first direction or air inlet in the third direction. When air inlet is in the third direction, based on the same principle of air inlet in the first direction, the turbulence can be enhanced and the heat exchange efficiency can be improved.

[0042] In detail, the two parts of the spiral tube segment 203 divided above are distributed along the third direction, and the two parts are defined as the first tube segment part 200A and the second tube segment part 200B. When air inlet is in the third direction, the air first contacts the first tube segment part 200A and then contacts the second tube segment part 200B. Since the projections of the first tube segment part 200A and the second tube segment part 200B in the third direction are partially overlapped and partially staggered, the effect of the air flowing through the plurality of heat exchange tubes 200 arranged in a cross manner in sequence in the first direction is the same, and the air can flow through different structures in sequence on the flow path, so that the turbulence effect can be enhanced.

[0043] ​​It can be seen that the arrangement of the spiral heat exchange tube 200 makes the heat exchanger 1000 better adapt to more application scenarios. Of course, for the heat exchanger 1000 with the wave-shaped tube segment 201, air can also be introduced along the third direction, but air is introduced along the first direction, the disturbance effect is better, and the heat exchange efficiency is also more obvious.

[0044] Please continue to refer to 16-20, Figure 16 for the structural schematic diagram of the heat exchanger 1000 in the fourth embodiment of the present application; Figure 17 for Figure 16 the top view; Figure 18 for Figure 16 the structural schematic diagram of one heat exchange tube 200 in the fourth embodiment; Figure 19 for Figure 16 the top view of the heat exchange tube 200 in the fourth embodiment; Figure 20 for Figure 19 the right view of the heat exchange tube 200 in the fourth embodiment.

[0045] In the third embodiment, the projection of each spiral coil tube segment 2031 of the spiral tube segment 203 along the second direction is a circular ring, and in the fourth embodiment, the projection of each spiral coil tube segment 2031 of the spiral tube segment 203 along the first direction is a square, and the square has four rounded corners, as shown in Figure 20 At this time, the spiral coil tube segment 2031 includes four straight tube segments, which are two oppositely arranged third straight tube segments 20311 and two oppositely arranged fourth straight tube segments 20313, the distribution direction of the two third straight tube segments 20311 is perpendicular to the opposite arrangement direction of the two fourth straight tube segments 20313, from Figure 16 , the two oppositely arranged third straight tube segments 20311 are specifically oppositely arranged along the first direction, and the two fourth straight tube segments 20313 are specifically oppositely arranged along the third direction. Among them, the third arc-shaped tube segment 20312 is connected between the adjacent two third straight tube segments 20311 and the fourth straight tube segment 20313. By arranging in this way, in addition to the technical effects of the circular spiral tube segment 203 described above, the space used by the heat exchange tube 200 in the axial direction of the header can be saved, as shown in Figure 16 Under the premise of providing the same tube length, the size of the heat exchange tube 200 in the axial direction of the header is reduced, which is equivalent to flattening the heat exchange tube 200 in the heat exchanger 1000 shown in Figure 11 along the first direction.

[0046] Please continue to refer to 21-23, Figure 21 for the structural schematic diagram of one heat exchange tube 200 in the fifth embodiment of the present application; Figure 22 for Figure 21 the top view of the heat exchange tube 200 in the fifth embodiment; Figure 23 for Figure 22 the right view.

[0047] The fifth embodiment is basically the same as the heat exchange tube 200 in the fourth embodiment, and the difference is that one spiral tube segment 2031 in the fifth embodiment includes two oppositely arranged fifth straight tube segments 20314, and the two fifth straight tube segments 20314 are connected through a fourth arc-shaped tube segment 20315. In the fifth embodiment, the two fifth straight tube segments 20314 are distributed along the first direction. Compared with the fourth embodiment, the proportion of the arc-shaped tube segment of the spiral tube segment 2031 in the fifth embodiment is larger, and the fluid medium flows relatively smoothly, while the spiral tube segment 203 in the fourth embodiment can be arranged to be thinner in the first direction. In the fourth and fifth embodiments, the spiral tube segment 2031 is roughly rectangular, and the long side extends along the third direction, so that the axial dimension occupied by the heat exchange tube 200 is smaller. However, it is known that the spiral tube segment 2031 can also be arranged such that the long side extends along the first direction and the short side extends along the third direction, so that the entire heat exchanger 1000 can be thinner. Figure 23

[0048] In the third to fifth embodiments, except that the specific structure of the curved tube segment 2001 is different, the other limitations are basically the same, and the same technical effects can be achieved, and will not be repeated here.

[0049] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.​

Claims

1. A heat exchanger, characterized by, The heat exchange device comprises a first header (101), a second header (102), and a plurality of heat exchange pipes (200) arranged between the first header (101) and the second header (102), one end of each of the heat exchange pipes (200) is connected to the first header (101), and the other end is connected to the second header (102); the plurality of heat exchange pipes (200) are arranged along a first direction; The heat exchange pipe (200) comprises a plurality of curved pipe segments (2001), the plurality of curved pipe segments (2001) are arranged along a second direction, the direction from one end to the other end of the heat exchange pipe (200) is the second direction, the first direction is perpendicular to the second direction; in the projection along the first direction, the projection of one of at least one group of two adjacent heat exchange pipes (200) and the projection of the other heat exchange pipe (200) are arranged in the second direction.

2. The heat exchanger of claim 1, wherein The heat exchange pipe (200) comprises a wave-shaped pipe segment (201), the wave-shaped pipe segment (201) comprises a plurality of wave-peak pipe segments (201a) and a plurality of wave-trough pipe segments (201b), and the curved pipe segment (2001) comprises a group of adjacent wave-peak pipe segments (201a) and wave-trough pipe segments (201b).

3. The heat exchanger of claim 2, wherein The wave-peak pipe segment (201a) and the wave-trough pipe segment (201b) each comprise a first arc-shaped pipe segment (201A) and a first straight pipe segment (201B), and two ends of the first arc-shaped pipe segment (201A) are connected to the first straight pipe segments (201B) respectively. Alternatively, the wave-peak pipe segment (201a) and the wave-trough pipe segment (201b) of the wave-shaped pipe segment (201) are both first arc-shaped pipe segments (201A).

4. The heat exchanger of claim 1, wherein The heat exchange pipe (200) comprises a spiral pipe segment (203), the spiral pipe segment (203) comprises a plurality of non-closed spiral coil pipe segments (2031) connected in sequence, and each of the spiral coil pipe segments (2031) is the curved pipe segment (2001).

5. The heat exchanger of claim 4, wherein In the projection along the second direction, the projection of the spiral coil pipe segment (2031) is a circular ring; Alternatively, in the projection along the second direction, the projection of the spiral coil pipe segment (2031) is a square, the spiral coil pipe segment (2031) comprises four straight pipe segments and a third arc-shaped pipe segment (20312), the four straight pipe segments are two oppositely arranged third straight pipe segments (20311) and two oppositely arranged fourth straight pipe segments (20313) respectively, and the third straight pipe segment (20311) and the fourth straight pipe segment (20313) are connected through the third arc-shaped pipe segment (20312); Alternatively, in the projection along the second direction, the projection of the spiral coil pipe segment is a square, and the spiral coil pipe segment comprises two oppositely arranged fifth straight pipe segments (20314) and a fourth arc-shaped pipe segment (20315), and the two fifth straight pipe segments (20314) are connected through the fourth arc-shaped pipe segment (20315).

6. The heat exchanger according to any one of claims 1 to 5, characterized in that The curved pipe segment (2001) has a central axis (M) extending along the extension direction thereof, and the central axes (M) of the plurality of curved pipe segments (2001) are located on a plane.

7. The heat exchanger of claim 6, wherein The plane is a first plane (S), the first plane (S) is perpendicular to the first direction, or the first plane (S) has an included angle greater than 0° and less than 90° with the first direction.

8. The heat exchanger according to any one of claims 1-5, characterized in that At least two adjacent heat exchange pipes (200) are the same in structure and size, and both ends have a connecting pipe section (202), which are a first connecting pipe section (202A) and a second connecting pipe section (202B) respectively; The first connecting pipe section (202A) of one first heat exchange pipe is connected with the first collecting pipe (101), and the second connecting pipe section (202B) is connected with the second collecting pipe (102); the first connecting pipe section (202A) of another heat exchange pipe (200) is connected with the second collecting pipe (102), and the second connecting pipe section (202B) is connected with the first collecting pipe (101); And the length of the first connecting pipe section (202A) in the second direction is less than the length of the second connecting pipe section (202B) in the second direction.

9. The heat exchanger of claim 8, wherein The connecting pipe section (202) comprises a second straight pipe section (2021) for connecting the first collecting pipe (101) or the second collecting pipe (102); the axis of the second straight pipe section (2021) and the midline of the heat exchange pipe (200) extending in the second direction are arranged staggered in a third direction, and the third direction is perpendicular to the first direction and the second direction.

10. The heat exchanger according to any one of claims 1-5, characterized in that In at least one group of two adjacent heat exchange pipes (200), the projection of one and the projection of the other are partially staggered in the third direction in the first direction projection, and the third direction is perpendicular to the first direction and the second direction.

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