Heat Exchanger

Abstract

The present application discloses a heat exchanger, comprising a first collector, a second collector and a heat exchange core connected to the first collector and the second collector at both ends; the first collector comprises a first channel, a second channel and a third channel, the first channel is located on one side of the third channel, the second channel is located on the other side of the third channel, the first channel and the second channel are both connected to the third channel, and the inner cavity of the heat exchange tube is connected to the third channel, at least one first channel and at least one second channel. The heat exchanger of the present application introduces the first fluid into the third channel along the length direction of the heat exchange tube through the second hole, and then distributes the first fluid to the first channel and the second channel respectively along the width direction of the heat exchange tube through the third channel, and then the first fluid flows into the heat exchange tube connected to the first channel, the second channel and the third channel, so that the first fluid can be distributed to the heat exchange tube more evenly in the collector, thereby improving the heat exchange effect of the heat exchanger.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchanger. Background Art

[0002] Heat exchangers, also known as heat exchangers, are widely used in heat exchange systems (such as air conditioning systems). Heat exchangers can be used to exchange heat between a heat exchange medium and the outside air, or between two heat exchange media. Whether the heat exchange medium in the manifold can be evenly distributed to the heat exchange tubes affects the heat exchange effect of the heat exchanger. Summary of the invention

[0003] In view of the above-mentioned problems existing in the related art, the present application provides a heat exchanger with better heat exchange effect.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a heat exchanger, characterized in that it includes: a first collector, a second collector and a heat exchange core; the heat exchange core includes multiple layers of heat exchange tubes arranged in parallel, the heat exchange tube includes a first port portion and a second port portion, the first port portion is connected to the first collector, and the second port portion is connected to the second collector; the first collector includes a first plate and a second plate arranged in parallel, the second plate is arranged in contact with the side of the first plate away from the heat exchange tube, the first plate includes a first body portion, the first body portion includes a plurality of first holes arranged in parallel, and the first port portion is plugged into the first hole; the second plate includes a plurality of first ribs, a plurality of second ribs and a plurality of first ribs that penetrate the first body portion along the length direction of the heat exchange tube. The second hole of the second plate, the extension direction of the first rib and the second rib is roughly parallel to the width direction of the heat exchange tube, the second plate also includes at least one third channel extending along the arrangement direction of the heat exchange tube, the first rib and the second rib are arranged opposite to each other along the width direction of the heat exchange tube and are respectively located on both sides of the third channel, the second hole communicates with at least one of the third channels, a plurality of the first ribs are arranged in parallel with each other and a first channel is formed between two adjacent first ribs, a plurality of the second ribs are arranged in parallel with each other and a second channel is formed between two adjacent second ribs, the first channel and the second channel are both communicated with the third channel, and the inner cavity of the heat exchange tube communicates with the third channel, at least one of the first channels and at least one of the second channels.

[0005] The heat exchanger of the present application introduces the first fluid into the third channel along the length direction of the heat exchange tube through the second hole, and then distributes the first fluid to the first channel and the second channel respectively along the width direction of the heat exchange tube through the third channel, and then the first fluid flows into the heat exchange tube connected to the first channel, the second channel and the third channel, so that the first fluid can be distributed to the heat exchange tube more evenly in the collecting member, thereby improving the heat exchange effect of the heat exchanger.

[0006] Optionally, the second plate includes a first sub-plate and a second sub-plate arranged in parallel; wherein, the first rib and the second rib are located on the first sub-plate, the first channel, the second channel, and the third channel are formed on the first sub-plate, the second hole is located on the second sub-plate, the second hole penetrates the second sub-plate along the length direction of the heat exchange tube, and the second sub-plate is arranged on the side of the first sub-plate away from the first plate.

[0007] Optionally, the second current collecting member includes a third plate and a fourth plate arranged in parallel, the fourth plate is fitted on a side of the third plate away from the heat exchange tube, the third plate includes a second body portion, the second body portion includes a plurality of third holes arranged in parallel, and the second port portion is plugged into the third hole; the fourth plate includes a plurality of third ribs and a plurality of fourth ribs, the extension direction of the third ribs and the fourth ribs is substantially parallel to the width direction of the heat exchange tube, the fourth plate also includes at least one sixth channel extending along the arrangement direction of the heat exchange tube, the third ribs and the fourth ribs are arranged opposite to each other along the width direction of the heat exchange tube and are respectively located on both sides of the sixth channel, a plurality of the third ribs are arranged in parallel with each other and a fourth channel is formed between two adjacent third ribs, a plurality of the fourth ribs are arranged in parallel with each other and a fifth channel is formed between two adjacent fourth ribs, the fourth channel and the fifth channel are both connected to the sixth channel, and the inner cavity of the heat exchange tube is connected to the sixth channel, at least one fourth channel and at least one fifth channel.

[0008] Optionally, the fourth plate also includes a fourth hole that passes through the fourth plate along the length direction of the heat exchange tube, the fourth hole connects all the sixth channels, and the second hole connects all the third channels; the heat exchanger also includes a first pipe and a second pipe, the first pipe includes a first end cover that blocks one end of the first pipe, the second pipe includes a second end cover that blocks one end of the second pipe, the first pipe includes a first plane wall that is fitted on a side of the second plate away from the first plate, the second pipe includes a second plane wall that is fitted on a side of the fourth plate away from the third plate, the first plane wall is provided with a first connecting hole, the first connecting hole is connected to the third channel through the second hole, the second plane wall is provided with a second connecting hole, the second connecting hole is connected to the sixth channel through the fourth hole, and the inner cavity of the first pipe is connected to the inner cavity of the second pipe through the inner cavity of the heat exchange tube.

[0009] Optionally, at least two third channels are provided, and the arrangement direction of at least two third channels is arranged parallel to the arrangement direction of the heat exchange tubes. The second plate also includes a fifth rib located between two adjacent third channels and spacing between two adjacent third channels. The fifth rib extends along the width direction of the heat exchange tubes. The first channel is formed between the fifth rib and the first rib, and the second channel is formed between the fifth rib and the second rib. Along the arrangement direction of the heat exchange tubes, the first channels located on both sides of the fifth rib are spaced apart from each other, and the second channels located on both sides of the fifth rib are spaced apart from each other. The second hole connects the third channel located on one side of the fifth rib. The first channel, the second channel and the third channel located on one side of the fifth rib are connected to the first channel, the second channel and the third channel located on the other side of the fifth rib through the heat exchange tube and the second collector.

[0010] Optionally, the second plate also includes a fifth hole that penetrates the second plate along the length direction of the heat exchange tube, the fifth hole connects to at least one of the third channels, and the second hole and the fifth hole are respectively located on both sides of the fifth rib along the arrangement direction of the heat exchange tube; the heat exchanger also includes a first pipe and a second pipe, the first pipe includes a first end cover that blocks one end of the first pipe, the second pipe includes a second end cover that blocks one end of the second pipe, the first pipe includes a first plane wall that is fitted on a side of the second plate away from the first plate, the second pipe includes a second plane wall that is fitted on a side of the second plate away from the first plate, the first plane wall is provided with a first connecting hole, the second plane wall is provided with a second connecting hole, the first connecting hole is connected to at least one of the third channels through the second hole, and the second connecting hole is connected to at least one of the third channels through the fifth hole; the inner cavity of the first pipe is connected to the inner cavity of the second pipe through the inner cavity of the heat exchange tube and the second collecting member.

[0011] Optionally, each of the first connecting hole and the second connecting hole is provided with at least one, and the extension direction of the first connecting hole and the second connecting hole is substantially parallel to the extension direction of the third channel; when the number of the first connecting hole and the second connecting hole is two or more, the arrangement direction of the first connecting hole and the second connecting hole is substantially parallel to the extension direction of the third channel.

[0012] Optionally, the first piping also includes a first extension portion, which is formed by extending the edge of the first connecting hole toward the second plate, and the first extension portion is inserted into the second hole; at least a portion of the edge of the first connecting hole is extended to form the first extension portion; the second piping also includes a second extension portion, at least a portion of the edge of the second connecting hole is provided with the second extension portion, the second extension portion is formed by extending the edge of the second connecting hole from the second piping toward the second plate, and the second extension portion is inserted into the fifth hole.

[0013] Optionally, the first pipe is integrally formed with the second plate, and the second pipe is integrally formed with the fourth plate; or both the first pipe and the second pipe are integrally formed with the second plate.

[0014] Optionally, the heat exchanger also includes a shell, the shell includes a first opening and a second opening respectively connected to the inner cavity of the shell, the first opening is arranged close to the first collecting piece relative to the second opening, and the second opening is arranged close to the second collecting piece relative to the first opening; one end of the shell is sealedly connected to the first collecting piece, and the other end is sealedly connected to the second collecting piece, and the main body of all the heat exchange tubes is accommodated in the inner cavity of the shell; the first plate also includes a third extension portion extending toward the shell, and the third plate also includes a fourth extension portion extending toward the shell, and the third extension portion and the fourth extension portion are respectively fixedly connected to the shell.

[0015] Optionally, the first piping also includes a first extension portion, which is formed by extending the edge portion of the first connecting hole toward the second plate, and the first extension portion is inserted into the second hole; at least a portion of the edge portion of the first connecting hole is extended to form the first extension portion; the second piping also includes a second extension portion, and at least a portion of the edge portion of the second connecting hole is provided with the second extension portion, the second extension portion is formed by extending the edge portion surrounding the second connecting hole from the second piping toward the fourth plate, and the second extension portion is inserted into the fourth hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a heat exchanger of the present application;

[0017] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of a heat exchanger of the present application;

[0018] Figure 3 yes Figure 2 A schematic diagram of the structure of the second piping is shown;

[0019] Figure 4 yes Figure 2 A schematic structural diagram of another embodiment of the first pipe and the second sub-plate is shown;

[0020] Figure 5 yes Figure 2 A schematic diagram of the exploded structure of the first current collecting member and the second current collecting member is shown;

[0021] Figure 6 yes Figure 5 A schematic front view of the first sub-board is shown;

[0022] Figure 7 yes Figure 5 A schematic front view of the third sub-board is shown;

[0023] Figure 8 yes Figure 2 A schematic cross-sectional view of the matching structure of the shell and part of the heat exchange tubes is shown;

[0024] Fig. 9 yes Figure 2 A schematic cross-sectional structure diagram of a heat exchanger is shown, wherein a heat exchange core shows a portion of heat exchange tubes;

[0025] Fig.10 yes Fig. 9 A partial enlarged schematic diagram of A is shown;

[0026] Fig.11 yes Fig. 9 A partial enlarged schematic diagram of B is shown;

[0027] Fig.12 It is a cross-sectional structural schematic diagram of another embodiment of the heat exchange core of the heat exchanger of the present application in cooperation with the first limiting portion and the second limiting portion, wherein only the first limiting portion is provided;

[0028] Fig.13 It is a cross-sectional structural schematic diagram of another embodiment of the heat exchange core of the heat exchanger of the present application in cooperation with the first limiting portion and the second limiting portion, wherein only the second limiting portion is provided;

[0029] Fig.14 It is a cross-sectional structural schematic diagram of another embodiment of the heat exchange core of the heat exchanger of the present application cooperating with the first limiting portion and the second limiting portion, wherein some heat exchange tubes only cooperate with the first limiting portion, and some heat exchange tubes only cooperate with the second limiting portion;

[0030] Fig.15 yes Figure 2 Another cross-sectional schematic diagram of the heat exchanger is shown;

[0031] Fig.16 yes Figure 2 The exploded structural diagram of the connecting member is shown;

[0032] Fig.17 yes Figure 2 A schematic cross-sectional structure diagram showing that the heat exchange core of the heat exchanger also includes a heat exchange element;

[0033] Fig.18 yes Figure 2 A schematic cross-sectional structure diagram showing another embodiment of a first limiting portion and a second limiting portion of a heat exchanger;

[0034] Fig.19 is a structural schematic diagram of another embodiment of the heat exchanger of the present application;

[0035] Fig. 20 is a schematic diagram of an exploded structure of another embodiment of a heat exchanger of the present application;

[0036] Fig.21 yes Fig. 20 A schematic diagram of the exploded structure of the first current collecting member and the second current collecting member is shown;

[0037] Fig. 22 yes Fig.21 A schematic front view of the first sub-board is shown;

[0038] Fig.23 yes Fig.21 A schematic front view of the third daughter board is shown. DETAILED DESCRIPTION

[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0040] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0041] It should be understood that the words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not indicate a quantity limitation, but indicate the presence of at least one; "plurality" indicates a quantity of two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for convenience of description and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects.

[0042] The heat exchanger of the exemplary embodiment of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can complement or combine with each other.

[0043] According to a specific embodiment of the heat exchanger of the present application, Figure 1 and Figure 2 As shown, a heat exchanger includes a first current collector 1, a second current collector 2, a heat exchange core 3 and a shell 4. The shell 4 is arranged around at least part of the heat exchange core 3, one end of the heat exchange core 3 is sealed to the first current collector 1, and the other end is sealed to the second current collector 2, and a passage for the flow of a first fluid is formed between the first current collector 1, the heat exchange core 3 and the second current collector 2. One end of the shell 4 is sealed to the first current collector 1, and the other end is sealed to the second current collector 2. The first current collector 1, the second current collector 2 and the shell 4 work together to form a relatively closed cavity, and a passage for the flow of a second fluid is formed in the cavity.

[0044] The heat exchange core 3 includes multiple layers of heat exchange tubes 31 arranged side by side. Optionally, the heat exchange tubes are flat tubes, and each layer of heat exchange tubes 31 includes one flat tube. Each heat exchange tube 31 includes a first port portion 311, a second port portion 312, and a main body portion 313, and the main body portion 313 is connected between the first port portion 311 and the second port portion 312. In this embodiment, the width of the first port portion 311 and the width of the second port portion 312 are substantially equal, and the width of the main body portion 313 is greater than the width of the first port portion 311 and greater than the width of the second port portion 312. The first port portion 311 of each heat exchange tube 31 is plugged into the first collector 1, the second port portion 312 is plugged into the second collector 2, and the main body portion 313 is accommodated in the inner cavity of the shell 4. The inner cavity of the heat exchange tube 31 communicates with the inner cavity of the first collector 1 and the inner cavity of the second collector 2.

[0045] The first current collector 1 includes a first plate 11 and a second plate 12, the second plate 12 includes a first sub-plate 121 and a second sub-plate 122, the first plate 11, the first sub-plate 121 and the second sub-plate 122 are arranged in parallel and are roughly plate-shaped. The housing 4 is sealed and connected to the first plate 11, the first sub-plate 121 is arranged on a side of the first plate 11 away from the housing 4, and the second sub-plate 122 is arranged on a side of the first sub-plate 121 away from the first plate 11.

[0046] like Figure 5 As shown, the first plate 11 includes a first main body portion 111, and the first main body portion 111 is provided with a plurality of first holes 1111 arranged in parallel. The first holes 1111 penetrate the first main body portion 111, and the first port portion 311 is inserted into the first holes 1111. The end face of one end of the main body portion 313 close to the first port portion 311 abuts against the first main body portion 111.

[0047] Regarding the first port portion 311, the second port portion 312 and the main body portion 313 in this embodiment, it should be understood that along the length direction of the heat exchange tube 31, the heat exchange tube 31 is divided into three parts, namely, the heat exchange tube 31 with relatively small width at both ends of the heat exchange tube 31 and the heat exchange tube 31 with relatively large width in the middle of the heat exchange tube 31, and the first port portion 311, the second port portion 312 and the main body portion 313 all have a certain length. In this embodiment, the heat exchange tube 31 portion with relatively small width near the first collector 1 is the first port portion 311, the heat exchange tube 31 portion with relatively small width near the second collector 2 is the second port portion 312, and the heat exchange tube 31 portion with relatively large width between the first port portion 311 and the second port portion 312 is the main body portion 313, and the inner cavities of the first port portion 311, the second port portion 312 and the main body portion 313 are connected to each other.

[0048] In this embodiment, since the width of the main body 313 is greater than the width of the first port portion 311 and the second port portion 312, the end surface of the main body 313 close to the first port portion 311 abuts against the first collector 1, and the end surface of the main body 313 close to the second port portion 312 abuts against the second collector 2, so as to achieve the limit between the heat exchange tube 31 and the first collector 1 and the second collector 2. By setting the length of the first port portion 311 and the second port portion 312, the depth of the heat exchange tube 31 inserted into the first collector 1 and the second collector 2 can be controlled. In other embodiments, the widths of the main body 313, the first port portion 311 and the second port portion 312 can be the same, and then, a limit portion is set in the first collector 1 and the second collector 2 to achieve the limit between the heat exchange tube 31 and the first collector 1 and the second collector 2, thereby controlling the depth of the heat exchange tube 31 inserted into the first collector 1 and the second collector 2.

[0049] In this embodiment, the cross-sectional shapes of the first port portion 311, the second port portion 312 and the main body portion 313 are all roughly waist-shaped. Since the first port portion 311 is plugged into the first hole 1111, the shape and size of the first hole 1111 are basically the same as the shape and size of the first port portion 311, so the shape of the first hole 1111 is also roughly waist-shaped, and the shapes and sizes of the multiple first holes 1111 are the same. In other embodiments, the cross-sectional shapes of the first port portion 311, the second port portion 312 and the main body portion 313 can also be other shapes such as rectangles and special shapes; the cross-sectional shapes of the first port portion 311, the second port portion 312 and the main body portion 313 can also be different; the shape of the first hole 1111 can also be inconsistent with the shape of the first port portion 311; the shapes and sizes of the multiple first holes 1111 can be the same or different, as long as the heat exchange tube 31 is connected to the first plate 11, it does not affect the flow of the first fluid and the first fluid does not leak, and this application is not limited. The shapes and sizes of the first port portion 311 , the second port portion 312 , the main body portion 313 and the second hole 1221 can be designed in various ways according to actual needs during use.

[0050] In this embodiment, the first plate 11 further includes a third extension portion 112 extending toward the housing 4. Figure 1 , 2 As shown in Figures 5 and 6, the third extension portion 112 is formed by extending the four peripheral portions of the first main body portion 111 toward the shell 4, the third extension portion 112 wraps the end of the shell 4, and the inner wall of the third extension portion 112 is attached to the outer wall of the shell 4. The end face of the shell 4 close to the first current collector 1 is connected to the first main body portion 111, and after brazing, a sealed connection between the shell 4 and the first current collector 1 is achieved. In other embodiments, the third extension portion 112 can be formed by extending one, two or three of the four peripheral portions of the first main body portion 111, and the shape of the third extension portion 112 can be a long strip, a serrated, a wavy, a special shape, etc., as long as the connection between the first plate 11 and the shell 4 can be achieved without affecting the sealed connection of the shell 4 to the first current collector 1, and this application is not limited. In addition, in other embodiments, the third extension portion 112 can also be inserted into the end of the shell 4, and the outer wall of the third extension portion 112 is attached to the inner wall of the shell 4.

[0051] like Figure 5 and Figure 6As shown, the first sub-plate 121 is composed of a solid part surrounded by the solid part and a hollow part formed by the solid part. The first sub-plate 121 is provided with a plurality of first ribs 1211 and second ribs 1212. The first ribs 1211 and second ribs 1212 are both arranged in the hollow part and connected to the solid part. The first ribs 1211 and second ribs 1212 are formed by extending the solid part toward the hollow part. The extension direction of the first ribs 1211 and second ribs 1212 is roughly parallel to the width direction of the heat exchange tube 31, and the first ribs 1211 and second ribs 1212 are axially symmetrically distributed. The first ribs 1211 and second ribs 1212 are both roughly in the shape of long strips, and there is a certain distance between the end faces of each group of oppositely arranged first ribs 1211 and the end faces of the second ribs 1212. A third channel 1215 extending along the arrangement direction of the heat exchange tubes 31 is formed in the hollow portion of the first sub-plate 121. The first ribs 1211 and the second ribs 1212 are arranged opposite to each other along the width direction of the heat exchange tubes 31 and are respectively located on both sides of the third channel 1215. A plurality of first ribs 1211 are arranged in parallel with each other and a first channel 1213 is formed between two adjacent first ribs 1211. A first channel 1213 is also formed between the first rib 1211 and the solid portion. A plurality of second ribs 1212 are arranged in parallel with each other and a second channel 1214 is formed between two adjacent second ribs 1212. A second channel 1214 is also formed between the second rib 1212 and the solid portion. All first channels 1213 and all second channels 1214 are connected to the third channel 1215. The extension direction of the third channel 1215 is perpendicular to the extension direction of the first channel 1213 and the extension direction of the second channel 1214. The first channel 1213 and the second channel 1214 are respectively located on both sides of the third channel 1215. In other embodiments, the first rib 1211 and the second rib 1212 may also be in other shapes. For example, the end surfaces of the first rib 1211 and the second rib 1212 that are oppositely disposed may be arc-shaped, which may facilitate the smoothness of the flow of the first fluid from the third channel 1215 to the first channel 1213 and the second channel 1214; for example, the end surfaces of two adjacent first ribs 1211 that are oppositely disposed may be serrated, which may form a turbulent flow in the first channel 1213 or the second channel 1214.

[0052] In this embodiment, the length of the first port portion 311 of the heat exchange tube 31 is greater than or equal to the thickness of the first body portion 111, but less than the sum of the thicknesses of the first plate 11 and the first sub-plate 121. When the first port portion 311 is plugged into the first collector 1, the end surface of the heat exchange tube 31 passes through the first plate 11 but not through the first sub-plate 121, that is, the end of the first port portion 311 is accommodated in the space formed by the first channel 1213, the second channel 1214 and the third channel 1215. The first fluid in this application is distributed to the first channel 1213 and the second channel 1214 through the third channel 1215, and then flows into the inner cavity of the heat exchange tube 31. The structural design of the first sub-plate 121 can realize the one-time distribution of the first fluid, and can make the first fluid more evenly distributed to the inner cavity of each heat exchange tube 31, which is conducive to improving the heat exchange effect of the heat exchanger.

[0053] The second sub-plate 122 includes a second hole 1221 that penetrates the second sub-plate 122 along the length direction of the heat exchange tube 31, and the second hole 1221 is connected to the third channel 1215. Along the width direction of the heat exchange tube 31, the second hole 1221 is located between the first rib 1211 and the second rib 1212. Figure 5 As shown, there are multiple second holes 1221, and the second holes 1221 are roughly waist-shaped. The extension direction and arrangement direction of the second holes 1221 are roughly parallel to the arrangement direction of the heat exchange tubes 31. The centers of the multiple second holes 1221 are evenly spaced and linearly spaced on the central axis of the second sub-plate 122, and the projections of all the second holes 1221 on the first sub-plate 121 fall into the third channel 1215. In this embodiment, the shape and size of the outer contours of the first sub-plate 121 and the second sub-plate 122 are basically the same, that is, the third channel 1215 is also arranged on the central axis of the first sub-plate 121, and the third channel 1215 is arranged in the middle of the first sub-plate 121, and the first channel 1213 and the second channel 1214 are axially symmetrically distributed with the central axis of the first sub-plate 121 as the central axis, so that when the first fluid is distributed from the third channel 1215 to the first channel 1213 and the second channel 1214, the flow rate and flow rate in the first channel 1213 and the second channel 1214 are substantially the same, which is conducive to the uniform distribution of the first fluid in the first current collector 1. The center of the second hole 1221 can be understood as the center point of the cross-sectional shape, such as the center of a circle, the intersection of the major axis and the minor axis of an ellipse, the intersection of three vertical lines of a triangle, etc.

[0054] In this embodiment, a plurality of second holes 1221 are provided, and the first fluid flows into the third channel 1215 from the plurality of second holes 1221 respectively, realizing the first distribution of the first fluid, and then is diverted from the third channel 1215 to the first channel 1213 and the second channel 1214, realizing the second distribution of the first fluid, and then the first fluid flows into the inner cavity of the heat exchange tube 31. After the first fluid is distributed twice, the first fluid can be distributed more evenly to the inner cavity of each heat exchange tube 31, which can further improve the heat exchange effect of the heat exchanger. The second hole 1221 penetrates the second sub-plate 122 along the length direction of the heat exchange tube 31, and the first channel 1213 and the second channel 1214 are respectively located on both sides of the third channel 1215 along the width direction of the heat exchange tube 31, and the second hole 1221 is connected to the third channel 1215. Refer to Figure 2 The first fluid flows into the third channel 1215 of the first current collecting member 1 along the up-down direction, and is then distributed to the first channel 1213 and the second channel 1214 along the left-right direction, respectively, so that the first fluid can be distributed more evenly.

[0055] In other embodiments, there may be only one second hole 1221, which is extended along the arrangement direction of the heat exchange tubes 31 and communicated with the third channel 1215; or two second holes 1221 may be provided along the arrangement direction of the heat exchange tubes 31, and each second hole 1221 is communicated with the third channel 1215. It should be understood that the centers of at least two second holes 1221 may be evenly distributed with equal intervals, or may be evenly distributed with unequal intervals; the centers of at least two second holes 1221 may be distributed in a straight line, or may not be distributed in a straight line; when distributed in a straight line, the straight line formed by the centers of at least two second holes 1221 may or may not coincide with the central axis of the second sub-plate 122; the third channel 1215 may not be provided on the central axis of the first sub-plate 121, that is, the first rib 1211 and the second rib 1212 are not axially symmetrically distributed, as long as the flow of the first fluid is not affected, the present application is not limited.

[0056] In this embodiment, the plurality of second holes 1221 are waist-shaped with the same shape and size. In other embodiments, the shape of the second hole 1221 may also be circular, rectangular, or other shapes such as irregular shapes; and the shapes and sizes of the plurality of second holes 1221 may be the same or different, as long as they do not affect the flow of the first fluid, and this application is not limited. The specific distribution of the second holes 1221, the third channel 1215, the first rib 1211, and the second rib 1212, and the setting of the shape and size can be designed in a variety of ways according to the actual needs during use.

[0057] The first plate 11, the first sub-plate 121 and the second sub-plate 122 are stacked and brazed to form the first current collector 1. The first channel 1213, the second channel 1214 and the third channel 1215 are all located inside the first current collector 1. The first channel 1213, the second channel 1214 and the third channel 1215 together form the inner cavity of the first current collector 1. The inner cavity of the heat exchange tube 31 is connected to the inner cavity of the first current collector 1. The first current collector 1 is formed by stacking and then brazing the plates. Such a configuration allows the heat exchanger using the first current collector 1 to have better pressure resistance and can be applied to heat exchange systems operating at high pressure.

[0058] like Figure 1 and Figure 2 As shown, the second current collecting part 2 includes a third plate 21 and a fourth plate 22, the fourth plate 22 includes a third sub-plate 221 and a fourth sub-plate 222, the third plate 21, the third sub-plate 221 and the fourth sub-plate 222 are arranged in parallel and are respectively roughly plate-shaped, the shell 4 is sealed and connected to the third plate 21, the third sub-plate 221 is fitted on the side of the third plate 21 away from the shell 4, and the fourth sub-plate 222 is fitted on the side of the third sub-plate 221 away from the third plate 21.

[0059] In this embodiment, the first collector 1 is used for the first fluid to flow into the heat exchanger, and the second collector 2 is used for the first fluid to flow out of the heat exchanger. The structure of the third plate 21 is substantially the same as that of the first plate 11, the structure of the first sub-plate 121 is substantially the same as that of the third sub-plate 221, and the structure of the second sub-plate 122 is substantially the same as that of the fourth sub-plate 222; the matching relationship between the third plate 21, the third sub-plate 221 and the fourth sub-plate 222 is also substantially the same as that between the first plate 11, the first sub-plate 121 and the second sub-plate 122; the matching relationship between the third plate 21, the third sub-plate 221 and the fourth sub-plate 222 and the heat exchange tube 31 and the shell 4 is substantially the same as that between the first plate 11, the first sub-plate 121 and the second sub-plate 122 and the heat exchange tube 31 and the shell 4, and the functions of the third plate 21, the third sub-plate 221 and the fourth sub-plate 222 can refer to the description of the first plate 11, the first sub-plate 121 and the second sub-plate 122. In other embodiments, other structural designs can be used in combination according to actual needs during use.

[0060] like Figure 5 As shown, the third plate 21 includes a second body portion 211 , the second body portion 211 is provided with a plurality of third holes 2111 arranged in parallel, the third holes 2111 penetrate the second body portion 211 , and the second port portion 312 is plugged into the third holes 2111 .

[0061] In this embodiment, the shape and size of the third hole 2111 are substantially consistent with the shape and size of the second port portion 312, so the shape of the third hole 2111 is also roughly waist-shaped, and the shapes and sizes of multiple third holes 2111 are the same. In other embodiments, the shape of the third hole 2111 may also be inconsistent with the shape of the second port portion 312; the shapes and sizes of multiple third holes 2111 may be the same or different, as long as the heat exchange tube 31 is connected to the third plate 21, it does not affect the flow of the first fluid and the first fluid does not leak, and this application is not limited. The shape and size design of the third hole 2111 can be designed in a variety of ways according to actual needs during use.

[0062] The third plate 21 further includes a fourth extension portion 212 extending toward the housing 4. Figure 1 , 2 As shown in Figures 5 and 6, the fourth extension part 212 is formed by extending the four peripheral parts of the second body part 211 toward the shell 4, the fourth extension part 212 wraps the end of the shell 4, the inner wall of the fourth extension part 212 is attached to the outer wall of the shell 4, and the end face of the shell 4 close to the second current collector 2 is connected to the second body part 211, and after brazing, a sealed connection between the shell 4 and the first current collector 1 is achieved. In other embodiments, the fourth extension part 212 can be formed by extending one, two or three of the four peripheral parts of the second body part 211, and the shape of the fourth extension part 212 can be a long strip, a serrated, a wavy, a special shape, etc., as long as the connection between the third plate 21 and the shell 4 can be achieved without affecting the sealed connection of the shell 4 to the second current collector 2, and this application is not limited. In addition, in other embodiments, the fourth extension part 212 can also be inserted into the end of the shell 4, and the outer wall of the fourth extension part 212 is attached to the inner wall of the shell 4.

[0063] like Figure 5 and Figure 7As shown, the third sub-plate 221 is composed of a solid part surrounded by the solid part and a hollow part formed by the solid part. The third sub-plate 221 is provided with a plurality of groups of third ribs 2211 and fourth ribs 2212. The third ribs 2211 and fourth ribs 2212 are both arranged in the hollow part and connected to the solid part. The third ribs 2211 and fourth ribs 2212 are both formed by extending from the solid part toward the hollow part. The extension direction of the third ribs 2211 and fourth ribs 2212 is roughly parallel to the width direction of the heat exchange tube 31. The third ribs 2211 and fourth ribs 2212 are axially symmetrically distributed. The third ribs 2211 and fourth ribs 2212 are both roughly in the shape of long strips, and there is a certain distance between the end faces of each group of relatively arranged third ribs 2211 and the end faces of the fourth ribs 2212. A sixth channel 2215 extending along the arrangement direction of the heat exchange tubes 31 is formed in the hollow portion of the second sub-plate 122. The third ribs 2211 and the fourth ribs 2212 are arranged opposite to each other along the width direction of the heat exchange tubes 31 and are respectively located on both sides of the sixth channel 2215. A plurality of third ribs 2211 are arranged in parallel with each other, and a fourth channel 2213 is formed between two adjacent third ribs 2211. A fourth channel 2213 is also formed between the third rib 2211 and the solid portion. A plurality of fourth ribs 2212 are arranged in parallel with each other, and a fifth channel 2214 is formed between two adjacent fourth ribs 2212. A fifth channel 2214 is also formed between the fourth rib 2212 and the solid portion. All fourth channels 2213 and all fifth channels 2214 are connected to the sixth channel 2215. The extension direction of the sixth channel 2215 is perpendicular to the extension direction of the fourth channel 2213 and the extension direction of the fifth channel 2214. The fourth channel 2213 and the fifth channel 2214 are respectively located on both sides of the sixth channel 2215. In other embodiments, the third rib 2211 and the fourth rib 2212 may also be in other shapes. For example, the end surfaces of the third rib 2211 and the fourth rib 2212 that are relatively arranged may be arc-shaped, which may be beneficial to the smoothness of the flow of the first fluid from the fourth channel 2213 and the fifth channel 2214 to the sixth channel 2215; for example, the end surfaces of two adjacent third ribs 2211 that are relatively arranged may be serrated, which may form a turbulent flow in the fourth channel 2213 or the fifth channel 2214.

[0064] In this embodiment, the length of the second port portion 312 of the heat exchange tube 31 is greater than the thickness of the third plate 21, but less than the sum of the thicknesses of the third plate 21 and the third sub-plate 221. When the second port portion 312 is plugged into the second collector 2, the end surface of the heat exchange tube 31 passes through the third plate 21 but not the third sub-plate 221, that is, the end of the second port portion 312 is accommodated in the space formed by the fourth channel 2213, the fifth channel 2214 and the sixth channel 2215. The first fluid in the present application flows from the inner cavity of the heat exchange tube 31 into the fourth channel 2213, the fifth channel 2214 and the sixth channel 2215, and then the first fluid in the fourth channel 2213 and the fifth channel 2214 converges to the sixth channel 2215. The structural design of the third sub-plate 221 can realize that the first fluid converges to the sixth channel 2215 and then flows out of the first collector 1.

[0065] The fourth sub-plate 222 includes a fourth hole 2221 penetrating the fourth sub-plate 222 along the length direction of the heat exchange tube 31, and the fourth hole 2221 is connected to the sixth channel 2215. Along the width direction of the heat exchange tube 31, the fourth hole 2221 is located between the third rib 2211 and the fourth rib 2212. Figure 5 As shown, there are multiple fourth holes 2221, and the fourth holes 2221 are roughly waist-shaped. The extension direction and arrangement direction of the fourth holes 2221 are roughly parallel to the arrangement direction of the heat exchange tubes 31. The centers of the multiple fourth holes 2221 are evenly spaced and linearly spaced on the central axis of the fourth sub-plate 222, and the projections of all the fourth holes 2221 on the third sub-plate 221 fall into the sixth channel 2215. In this embodiment, the shape and size of the outer contours of the third sub-plate 221 and the fourth sub-plate 222 are substantially the same, that is, the sixth channel 2215 is also arranged on the central axis of the third sub-plate 221, and the sixth channel 2215 is arranged in the middle of the third sub-plate 221, and the fourth channel 2213 and the fifth channel 2214 are axially symmetrically distributed with the central axis of the third sub-plate 221 as the central axis, so that when the first fluid converges from the fourth channel 2213 and the fifth channel 2214 to the sixth channel 2215, the flow rate and flow velocity in the fourth channel 2213 and the fifth channel 2214 are substantially the same, which is conducive to the convergence of the first fluid in the second current collector 2. The center of the fourth hole 2221 can be understood as the center point of the cross-sectional shape, such as the center of a circle, the intersection of the major axis and the minor axis of an ellipse, the intersection of three vertical lines of a triangle, etc.

[0066] In other embodiments, there may be only one fourth hole 2221, which is extended along the arrangement direction of the heat exchange tubes 31 and communicated with the sixth channel 2215; or two fourth holes 2221 may be provided along the arrangement direction of the heat exchange tubes 31, and each fourth hole 2221 is communicated with the sixth channel 2215. It should be understood that the centers of at least two fourth holes 2221 may be evenly distributed with equal intervals or evenly distributed with unequal intervals; the centers of at least two fourth holes 2221 may be distributed in a straight line or not; when distributed in a straight line, the straight line formed by the centers of at least two fourth holes 2221 may or may not coincide with the central axis of the fourth sub-plate 222; the sixth channel 2215 may not be provided on the central axis of the third sub-plate 221, that is, the third rib 2211 and the fourth rib 2212 may not be distributed in an axisymmetric manner, as long as the flow of the first fluid is not affected, and the present application is not limited.

[0067] In this embodiment, the plurality of fourth holes 2221 are waist-shaped with the same shape and size. In other embodiments, the shape of the fourth hole 2221 may also be circular, rectangular, or other shapes such as irregular shapes; and the shapes and sizes of the plurality of fourth holes 2221 may be the same or different, as long as they do not affect the flow of the first fluid, and this application is not limited. The specific distribution of the fourth holes 2221, the sixth channel 2215, the third rib 2211, and the fourth rib 2212, and the setting of the shape and size can be designed in a variety of ways according to the actual needs during use.

[0068] The third plate 21, the third sub-plate 221 and the fourth sub-plate 222 are stacked and brazed to form the second current collector 2. The fourth channel 2213, the fifth channel 2214 and the sixth channel 2215 are all located inside the second current collector 2. The fourth channel 2213, the fifth channel 2214 and the sixth channel 2215 together form the inner cavity of the second current collector 2. The inner cavity of the heat exchange tube 31 communicates with the inner cavity of the first current collector 1 and the inner cavity of the second current collector 2. The second current collector 2 is formed by stacking the plates and then brazing them. Such a configuration allows the heat exchanger using the second current collector 2 to have better pressure resistance and can be applied to heat exchange systems operating at high pressure.

[0069] like Figure 1-3 As shown, the heat exchanger also includes a first pipe 5 connected to the first collecting member 1 and a second pipe 6 connected to the second collecting member 2. The first pipe 5 is provided with a first end cover 51 for sealing one end of the first pipe 5, and the second pipe 6 is provided with a second end cover 61 for sealing one end of the second pipe 6.

[0070] The first pipe 5 includes a first plane wall 52 that is fitted and arranged on a side of the second sub-plate 122 away from the first sub-plate 121, and the first plane wall 52 is provided with a first communication hole 53, and the first communication hole 53 is connected to the third channel 1215 through the second hole 1221. The first communication hole 53 is provided in a one-to-one correspondence with the second hole 1221, and the shape and size of the outer contour of the first communication hole 53 are the same as the shape and size of the outer contour of the second hole 1221. The second pipe 6 includes a second plane wall 62 that is fitted and arranged on a side of the fourth sub-plate 222 away from the third sub-plate 221, and the second plane wall 62 is provided with a second communication hole 63, and the second communication hole 63 is connected to the sixth channel 2215 through the fourth hole 2221. The second communication hole 63 is provided in a one-to-one correspondence with the fourth hole 2221, and the shape and size of the outer contour of the second communication hole 63 are the same as the shape and size of the outer contour of the fourth hole 2221. The inner cavity of the first pipe 5 communicates with the inner cavity of the second pipe 6 through the inner cavity of the first header 1 , the inner cavity of the heat exchange tube 31 , and the inner cavity of the second header 2 .

[0071] In other embodiments, the first connecting hole 53 and the second hole 1221 may not be arranged in a one-to-one correspondence, and the second connecting hole 63 and the fourth hole 2221 may not be arranged in a one-to-one correspondence. The shape and size of the outer contour of the first connecting hole 53 may be different from the shape and size of the outer contour of the second hole 1221, and the shape and size of the outer contour of the second connecting hole 63 may be different from the shape and size of the outer contour of the fourth hole 2221. The shape and size of the outer contours of multiple first connecting holes 53 or multiple second connecting holes 63 may be different. The specific distribution and shape and size settings of the first connecting holes 53 and the second connecting holes 63 can be designed in a variety of ways according to actual needs during use.

[0072] According to another embodiment of the first pipe 5, the second pipe 6, the fourth sub-plate 222 and the second sub-plate 122 of the heat exchanger of the present application, Figure 4 As shown, the first pipe 5 also includes a first extension portion 54 and a first positioning portion 55, and the second sub-plate 122 also includes a second positioning portion 1223. The first extension portion 54 is formed by extending the edge of the first connecting hole 53 toward the second sub-plate 122. The first extension portion 54 is inserted into the second hole 1221, which can make the position between the first pipe 5 and the first current collector 1 relatively fixed and the connection between the first connecting hole 53 and the second hole 1221 more reliable. The first positioning portion 55 and the second positioning portion 1223 cooperate to further enhance the reliability of the connection between the first pipe 5 and the first current collector 1. Figure 4The second pipe 6 also includes a second extension portion (not shown in the figure) and a third positioning portion (not shown in the figure), and the fourth sub-plate 222 also includes a fourth positioning portion (not shown in the figure). The second extension portion is formed by extending the edge of the second connecting hole 63 toward the direction of the fourth sub-plate 222. The second extension portion is plugged into the fourth hole 2221, which can make the position between the second pipe 6 and the second current collector 2 relatively fixed and the connection between the second connecting hole 63 and the fourth hole 2221 more reliable. The third positioning portion and the fourth positioning portion cooperate to further enhance the reliability of the connection between the second pipe 6 and the second current collector 2.

[0073] The matching positions of the first piping 5 and the first current collecting part 1 are relatively fixed, and the matching positions of the second piping 6 and the second current collecting part 2 are relatively fixed. On the one hand, the reliability of the connection between the first connecting hole 53 and the second hole 1221 and the reliability of the connection between the second connecting hole 63 and the fourth hole 2221 can be increased, so that the circulation of the first fluid is smoother. On the other hand, the reliability of the assembly of the second piping 6 and the second current collecting part 2 can be increased, and the assembly process of the heat exchanger can be simplified.

[0074] In other embodiments, the first piping 5 may be provided with only one of the first extension portion 54 or the first positioning portion 55, the second piping 6 may be provided with only one of the first extension portion 54 or the first positioning portion 55, only a portion of the first connecting holes 53 may be provided with the first extension portion 54, and only a portion of the second connecting holes 63 may be provided with the second extension portion, so as to achieve positioning between the first piping 5 and the first current collecting component 1 and between the second piping 6 and the second current collecting component 2, and the present application is not limited thereto.

[0075] The flow path of the first fluid is as follows: the first fluid flows into the heat exchanger from the first piping 5, flows into the inner cavity of the first collecting component 1 through the first connecting hole 53 and the second hole 1221, and then is distributed to the first channel 1213 and the second channel 1214 through the third channel 1215. The first fluid flows into the inner cavity of the heat exchange tube 31, flows along the heat exchange tube 31 to the inner cavity of the second collecting component 2, and then converges to the sixth channel 2215 through the fourth channel 2213 and the fifth channel 2214, flows into the second piping 6 through the second connecting hole 63 and the fourth hole 2221, and finally flows out of the heat exchanger.

[0076] In this embodiment, if Figure 1 , 2As shown in Figures 1 and 8, the heat exchanger further includes an integrally formed shell 4, the shell 4 includes a first opening 41 and a second opening 42 respectively connected to the inner cavity of the shell 4, the first opening 41 is arranged close to the first collector 1 relative to the second opening 42, and the second opening 42 is arranged close to the second collector 2 relative to the first opening 41. Along the width direction of the heat exchange tube 31, the main body 313 of the heat exchange tube 31 includes a first end 3131 and a second end 3132 arranged opposite to each other.

[0077] The shell 4 includes a first wall 43 and a second wall 44 that are arranged opposite to each other, and the main body 313 of the heat exchange tube 31 is arranged between the first wall 43 and the second wall 44. The first opening 41 and the second opening 42 are respectively used to guide the second fluid to flow into and out of the inner cavity of the shell 4. The length direction of the first opening 41 and the second opening 42 are arranged parallel to the arrangement direction of the heat exchange tubes 31. The first opening 41 and the second opening 42 can be both arranged on the first wall 43, can be both arranged on the second wall 44, or can be one on the first wall 43 and the other on the second wall 44.

[0078] The heat exchanger further includes a first limiting portion 8 and a second limiting portion 9. The first limiting portion 8, the second limiting portion 9 and the shell 4 are formed by an integrated molding process. The shell 4 formed by the integrated molding has a high strength and can reduce welds, thereby reducing the possibility of leakage of the second fluid. Figure 8-11 As shown, the first limiting portion 8 is arranged on the first wall 43, and the second limiting portion 9 is arranged on the second wall 44. The first limiting portion 8 includes a plurality of first groove portions 82 extending along the length direction of the heat exchange tube 31, and the plurality of first groove portions 82 are arranged roughly in parallel along the arrangement direction of the heat exchange tube 31. The second limiting portion 9 includes a plurality of second groove portions 92 extending along the length direction of the heat exchange tube 31, and the plurality of second groove portions 92 are arranged roughly in parallel along the arrangement direction of the heat exchange tube 31. The first end portion 3131 of each heat exchange tube 31 cooperates with a first groove portion 82, and the second end portion 3132 cooperates with a second groove portion 92. Each heat exchange tube 31 is perpendicular to the first wall 43 and the second wall 44. The first groove portion 82 includes a first bottom wall 821, two first side walls 822 respectively located on both sides of the first bottom wall 821, and a first groove 823 formed by the first bottom wall 821 and the two first side walls 822. The first bottom wall 821 and the two first side walls 822 are both fitted to the main body 313 of the heat exchange tube 31, and at least a portion of the first end portion 3131 is accommodated in the first groove 823. The second groove portion 92 includes a second bottom wall 921, two second side walls 922 respectively located on both sides of the second bottom wall 921, and a second groove 923 formed by the second bottom wall 921 and the two second side walls 922. The second bottom wall 921 and the two second side walls 922 are both fitted to the main body 313 of the heat exchange tube 31, and at least a portion of the second end portion 3132 is accommodated in the second groove 923. The opening directions of the first groove 823 and the second groove 923 are both set toward the heat exchange tube 31.

[0079] In this embodiment, a first side wall 822 of each first groove portion 82 forms a first protrusion 81, and a certain distance is between two adjacent first groove portions 82, that is, a heat exchange tube 31 is provided between the side walls of each first groove portion 82, and no heat exchange tube 31 is provided between the side walls of two adjacent first groove portions 82; a second side wall 922 of each second groove portion 92 forms a second protrusion 91, and a certain distance is between two adjacent second groove portions 92, that is, a heat exchange tube 31 is provided between the side walls of each second groove portion 92, and no heat exchange tube 31 is provided between the side walls of two adjacent second groove portions 92. The cross-sectional shapes of the first end portion 3131 and the second end portion 3132 are consistent with the cross-sectional shapes of the first groove 823 and the second groove 923, referring to Fig. 9 and Fig.17 The cross-section of the main body 313 of the heat exchange tube 31 is waist-shaped, that is, the cross-sections of the first end 3131 and the second end 3132 are roughly U-shaped, and the cross-sectional shapes of the first groove 823 and the second groove 923 are also U-shaped; the cross-section of the main body 313 of the heat exchange tube 31 is roughly square, and the cross-sectional shapes of the first groove 823 and the second groove 923 are roughly "concave", so that the first bottom wall 821 and the second bottom wall 921 can fit more closely to the first end 3131 and the second end 3132 respectively, and the first limiting portion 8, the second limiting portion 9 and the heat exchange tube 31 are more securely matched.

[0080] In other embodiments, the cross-sectional shape of the first end 3131 and the second end 3132 may be inconsistent with the cross-sectional shape of the first groove 823 and the second groove 923. For example, the cross-sectional shape of the first end 3131 and the second end 3132 are both roughly U-shaped, and the cross-sectional shape of the first groove 823 and the second groove 923 is roughly "concave". As long as the position of the heat exchange tube 31 in the inner cavity of the shell 4 can be relatively fixed by the first groove portion 82 and the second groove portion 92. By evenly arranging the first groove portion 82 and the second groove portion 92, the heat exchange tube 31 is also evenly arranged in the inner cavity of the shell 4, so that the flow rate and flow velocity of the second fluid on both sides of each heat exchange tube 31 can be made basically the same, so that the heat exchange between the first fluid and the second fluid can be more sufficient, so that the heat exchanger has a better heat exchange effect. Reference Fig.17, a heat exchanger 32 can be arranged between two adjacent heat exchange tubes 31, and the heat exchanger 32 is at least partially connected to the heat exchange tube 31, so as to achieve the effect of strengthening the heat exchange between the first fluid and the second fluid, and further improve the heat exchange effect of the heat exchanger. The heat exchanger 32 can be a fin in the form of a sheet, or other sheet-like structure capable of achieving heat transfer. The heat exchanger 32 can be an integrated structure or a combined structure. In other embodiments, a first protrusion 81 can also be formed by the first side walls 822 of two adjacent first grooves 82 being bonded together, and a second protrusion 91 can also be formed by the second side walls 922 of two adjacent second grooves 92 being bonded together; the first bottom wall 821 of the first groove 82 can be a part of the first wall 43, and the first end 3131 is arranged between the two first side walls 822 and connected to the first wall 43; the second bottom wall 921 of the second groove 92 can be a part of the second wall 44, and the second end 3132 is arranged between the two second side walls 922 and connected to the second wall 44.

[0081] In other embodiments, reference Figure 12-14 The heat exchanger may also be provided with only the first limiting portion 8, without the second limiting portion 9, the first end portion 3131 of the heat exchange tube 31 cooperates with the first limiting portion 8, and the second end portion 3132 is connected to the second wall 44; it may also be provided with only the second limiting portion 9, without the first limiting portion 8, the second end portion 3132 of the heat exchange tube 31 cooperates with the second limiting portion 9, and the first end portion 3131 is connected to the first wall 43; it may also be provided with both the first limiting portion 8 and the second limiting portion 9, but the first end portion 3131 of a part of the heat exchange tube 31 cooperates with the first limiting portion 9. The second end portion 3132 is cooperated with the positioning portion 8, and the second end portion 3132 is connected to the second wall 44. The second end portion 3132 of another part of the heat exchange tube 31 cooperates with the second limiting portion 9, and the first end portion 3131 is connected to the first wall 43. As long as the position of the heat exchange tube 31 in the inner cavity of the shell 4 can be relatively fixed, and most of the second fluid flows in the channel between adjacent heat exchange tubes 31, only a small amount of the second fluid flows in the gap between the heat exchange tube 31 and the shell 4, or no second fluid flows in the gap between the heat exchange tube 31 and the shell 4, the present application is not limited.

[0082] In this embodiment, the first opening 41 and the second opening 42 are both provided on the first wall 43. Along the length direction of the heat exchange tube 31, the length value of the first protrusion 81 is equal to the length value of the first wall 43 minus the width value of the first opening 41 and the width value of the second opening 42. The length value of the second protrusion 91 is equal to the length value of the second wall 44. The plane where the first port portion 311 and the main body portion 313 are connected, the end surface of the first wall 43 and the second wall 44 close to the first current collecting member 1, the end surface of the first protrusion 81 close to the first current collecting member 1 and the end surface of the second protrusion 91 close to the first current collecting member 1 are all located in the same horizontal plane. The plane where the second port portion 312 and the main body portion 313 are connected, the end surface of the first wall 43 and the second wall 44 close to the second current collecting member 2, the end surface of the first protrusion 81 close to the second current collecting member 2 and the end surface of the second protrusion 91 close to the second current collecting member 2 are all located in the same horizontal plane. It can be understood that after the shell 4 is connected to the first current collecting part 1 and the second current collecting part 2, the plane where the first port portion 311 and the main body portion 313 are connected, the end surface of the first wall 43 and the second wall 44 close to the first current collecting part 1, and the end surface of the first protrusion 81 and the second protrusion 91 close to the first current collecting part 1 are all fitted to the first plate 11 of the first current collecting part 1, and the plane where the second port portion 312 and the main body portion 313 are connected, the end surface of the first wall 43 and the second wall 44 close to the second current collecting part 2, and the end surface of the first protrusion 81 and the second protrusion 91 close to the second current collecting part 2 are all fitted to the third plate 21 of the second current collecting part 2. With this arrangement, before brazing, the process of assembling the first current collecting part 1, the second current collecting part 2, the shell 4 and the heat exchange core 3 is relatively simple, which can reduce the assembly error of the heat exchanger.

[0083] In other embodiments of the present application, if the first opening 41 and the second opening 42 are both provided on the first wall 43, the length of the first protrusion 81 may be less than the length of the first wall 43 minus the width of the first opening 41 and the width of the second opening 42, and the length of the second protrusion 91 may also be less than the length of the second wall 44. Fig.18 , along the length direction of the heat exchange tube 31, the first protrusion 81 and the second protrusion 91 are arranged between the first opening 41 and the second opening 42; or the first protrusion 81 and the second protrusion 91 can also be composed of two parts, along the length direction of the heat exchange tube 31, they are respectively located between the first opening 41 and the first collecting piece 1 and between the second opening 42 and the second collecting piece 2, as long as the position of the heat exchange tube 31 in the inner cavity of the shell 4 can be relatively fixed.

[0084] In other embodiments of the present application, the first limiting portion 8, the second limiting portion 9 and the shell 4 may not be integrally formed, and only the shell 4 may be integrally formed, and the first limiting portion 8 and the second limiting portion 9 are fixed to the shell 4 by brazing; the shell 4 may also be composed of a plurality of components spliced ​​together, and the first limiting portion 8 and the second limiting portion 9 may be fixed to the shell 4 by brazing; the shell 4 may also be composed of a plurality of components spliced ​​together, and the first limiting portion 8 and the second limiting portion 9 are integrally formed with one of the components, and the second limiting portion 9 is integrally formed with one of the components.

[0085] The heat exchanger further includes a connector 7, which includes a first piece 71, a second piece 72, and a first cavity 73 formed by the first piece 71 and the second piece 72. The first piece 71 is connected to the shell 4, so that the first cavity 73 is connected to the inner cavity of the shell 4. The first opening 41 and the second opening 42 are both provided with connectors 7. Figure 2 , 15 As shown in Figures 16 and 17, the first member 71 includes a first annular side wall 711, a second annular side wall 712, and a first step portion 713 connecting the first annular side wall 711 and the second annular side wall 712. One end of the first step portion 713 is connected to the first annular side wall 711 and the other end is connected to the second annular side wall 712. At least part of the first annular side wall 711 is fixedly connected to the peripheral portion of the first opening 41 or the peripheral portion of the second opening 42. The end surface of the first annular side wall 711 close to the heat exchange tube 31 is attached to or close to the heat exchange tube 31, that is, the connection member 7 does not affect the cooperation between the heat exchange core 3 and the shell 4 after being fixed to the shell 4. The cross section of the first member 71 is roughly trumpet-shaped. The second member 72 includes a third annular side wall 721 and a third bottom wall 722 connected to the end of the third annular side wall 721 away from the first member 71. The third bottom wall 722 includes a third through hole. The first cavity 73 is connected to the third through hole and the inner cavity of the shell 4. The cross section of the second member 72 is roughly U-shaped. In this embodiment, the third annular side wall 721 surrounds and fits the second annular side wall 712, and the outer side wall of the second annular side wall 712 fits the inner side wall of the third annular side wall 721 to relatively seal and connect the first piece 71 and the second piece 72. In other embodiments, the inner side wall of the second annular side wall 712 may fit the outer side wall of the third annular side wall 721; or the third annular side wall 721 may not surround the second annular side wall 712, and other matching structures such as toothed engagement may be used as long as the first piece 71 and the second piece 72 can be relatively sealed and connected.

[0086] The heat exchange core 3 includes multiple layers of heat exchange tubes 31 arranged in parallel, and multiple circulation channels for the second fluid to circulate are formed between two adjacent layers of heat exchange tubes 31 and between the heat exchange tubes 31 and the shell 4, and the multiple circulation channels are basically not connected. It should be understood here that basically not connected means that two circulation channels can be connected through a small gap, such as the gap between the heat exchange tube 31 and the first limiter 8 or the first wall 43, but the second fluid flowing in the gap is much less than the second fluid flowing in one circulation channel. The heat exchange tube 31 includes a first port portion 311, a second port portion 312 and a main body portion 313, the first port portion 311 is plugged into the first collector 1, the second port portion 312 is plugged into the second collector 2, and the main body portion 313 is accommodated in the inner cavity of the shell 4. Optionally, the heat exchange tube 31 is a flat tube, and the flat tube is provided with multiple channels parallel to each other, and the multiple channels together form the inner cavity of the heat exchange tube 31, and the first fluid flows in the channel. Of course, the flat tube can also have only one or two channels.

[0087] In this embodiment, there is one first opening 41 and one second opening 42 respectively, and both are roughly square. The length direction of the first opening 41 and the second opening 42 is arranged in parallel with the arrangement direction of the heat exchange tubes 31. One first opening 41 is connected to all the circulation channels in the inner cavity of the shell 4, and one second opening 42 is also connected to all the circulation channels in the inner cavity of the shell 4. In other embodiments, there can be at least two first openings 41 and second openings 42 respectively, and each first opening 41 and each second opening 42 are connected to at least one circulation channel. In order to meet the requirement that the connecting member 7 is sealed and connected to the shell 4, the structure of the first annular side wall 711 of the first member 71 must be designed accordingly.

[0088] Optionally, when each layer of heat exchange tube 31 is a flat tube, one of the side walls on both sides in the width direction of the flat tube is connected to the first limiting portion 8, and the other side wall is connected to the second limiting portion 9; when each layer of heat exchange tube 31 is at least two side-by-side flat tubes, one side wall of one of the two outermost flat tubes is connected to the first limiting portion 8, and one side wall of the other flat tube is connected to the second limiting portion 9, the first port portion 311 of each flat tube is connected to the first current collecting part 1, and the second port portion 312 is connected to the second current collecting part 2, and the main body portions 313 of two adjacent flat tubes of each layer of heat exchange tube 31 are connected by a connecting portion, and one end of the connecting portion is connected to the first current collecting part 1 and the other end is connected to the second current collecting part 2.

[0089] In this embodiment, the first opening 41 is used for the inflow of the second fluid, and the second opening 42 is used for the outflow of the second fluid. The flow path of the second fluid is as follows: the second fluid flows into the heat exchanger from the third through hole of the connector 7 connected to the first opening 41, and is diverted to multiple flow channels in the inner cavity of the shell 4 through the first cavity 73 of the connector 7, and the heat exchange between the first fluid and the second fluid is completed in the inner cavity of the shell 4. Then the second fluid converges to the first cavity 73 of the connector 7 connected to the second opening 42, and flows out of the heat exchanger from the third through hole of the connector 7.

[0090] According to another specific embodiment of the heat exchanger of the present application, the structure of the heat exchanger of this embodiment is substantially the same as the structure of the above-mentioned heat exchanger. Figure 19-23 As shown, the difference is that: there are at least two third channels 1215, and the extension direction and arrangement direction of at least two third channels 1215 are arranged in parallel with the arrangement direction of the heat exchange tubes 31. The fourth sub-plate 222 is not provided with a fourth hole 2221. The first sub-plate 121 also includes a fifth rib 1216 located between two adjacent third channels 1215 and spacing between two adjacent third channels 1215. The fifth rib 1216 extends along the width direction of the heat exchange tube 31, and a first channel 1213 is also formed between the fifth rib 1216 and the first rib 1211, and a second channel 1214 is also formed between the fifth rib 1216 and the second rib 1212; along the arrangement direction of the heat exchange tubes 31, the first channels 1213 located on both sides of the fifth rib 1216 are spaced apart from each other, and the second channels 1214 located on both sides of the fifth rib 1216 are spaced apart from each other. The second sub-plate 122 further includes a fifth hole 1222 penetrating the second sub-plate 122 along the length direction of the heat exchange tube 31. The fifth hole 1222 is connected to at least one third channel 1215. The third channels 1215 connected to the second hole 1221 and the fifth hole 1222 are not directly connected. The second hole 1221 and the fifth hole 1222 are respectively located on both sides of the fifth rib 1216 along the arrangement direction of the heat exchange tube 31. The first pipe 5 and the second pipe 6 are both fixedly connected to the second sub-plate 122. The first connecting hole 53 is connected to at least one third channel 1215 through the second hole 1221, and the second connecting hole 63 is connected to at least one third channel 1215 through the fifth hole 1222. The thickness of the fifth rib 1216 is equal to the thickness of the first sub-plate 121, that is, one side of the fifth rib 1216 is connected to the second sub-plate 122, and the other side is connected to the first plate 11.

[0091] Taking the first sub-plate 121 having a fifth rib 1216 and two third channels 1215 as an example, Fig. 20The fifth rib 1216 is disposed in the middle of the first sub-plate 121. The first channel 1213, the second channel 1214 and the third channel 1215 located on one side of the fifth rib 1216 are connected to the first channel 1213, the second channel 1214 and the third channel 1215 located on the other side of the fifth rib 1216 through the heat exchange tube 31 and the second collector 2. The inner cavity of the first pipe 5 is connected to the inner cavity of the second pipe 6 through the inner cavity of the heat exchange tube 31 and the second collector 2. When the first port portion 311 is inserted into the first collector 1, the end surface of the heat exchange tube 31 passes through the first plate 11 but not the first sub-plate 121. Combined with the thickness setting of the fifth rib 1216, the inner cavity of the first collector 1 is divided into a first inner cavity and a second inner cavity that are not directly connected.

[0092] The flow path of the first fluid in this embodiment is as follows: the first fluid flows into the heat exchanger from the first pipe 5, flows into the first inner cavity through the first connecting hole 53 and the second hole 1221, and in the first inner cavity, the first fluid is distributed from the third channel 1215 to the first channel 1213 and the second channel 1214, and then flows into the part of the heat exchange tube 31 connected to the first inner cavity, flows along the part of the heat exchange tube 31, and exchanges heat with the second fluid in the inner cavity of the shell 4, then the first fluid flows into the inner cavity of the second collector 2, and then flows into the part of the heat exchange tube 31 connected to the second inner cavity through the fourth channel 2213, the fifth channel 2214 and the sixth channel 2215, flows along the part of the heat exchange tube 31, and exchanges heat with the second fluid again in the inner cavity of the shell 4, and the first fluid converges to the second inner cavity, and in the second inner cavity, the first fluid converges from the first channel 1213 and the second channel 1214 to the third channel 1215, and then flows into the second pipe 6 through the second connecting hole 63 and the fifth hole 1222, and finally flows out of the heat exchanger.

[0093] By providing a fifth rib 1216 and two third channels 1215 on the first sub-plate 121, and providing a second hole 1221 and a fifth hole 1222 that are not directly connected on the second sub-plate 122, the flow path of the first fluid is roughly U-shaped, and the heat exchange path between the first fluid and the second fluid is extended, which can improve the heat exchange effect between the first fluid and the second fluid, thereby improving the heat exchange effect of the heat exchanger. It is also possible to further extend the flow path of the first fluid by providing multiple fifth ribs 1216, and further improve the heat exchange effect between the first fluid and the second fluid.

[0094] The other structures of this embodiment are the same as those of the above embodiments and will not be described again.

[0095] According to other embodiments of the first current collecting part 1 of the present application, the first sub-plate 121 and the second sub-plate 122 can be formed on an integrally formed second plate 12 that is roughly plate-shaped. Optionally, the first rib 1211, the second rib 1212, the second hole 1221, and the fifth hole 1222 can be formed by machining. The arrangement of the first rib 1211, the second rib 1212, the second hole 1221, and the fifth hole 1222 are basically the same as those in the above-mentioned embodiments and will not be repeated here. The second plate 12 includes a first surface and a second surface, the first surface is a side of the second plate 12 away from the first plate 11, and the second surface is attached to a side of the first plate 11 away from the shell 4. The second hole 1221 is arranged on the first surface and penetrates the second plate 12 along the length direction of the heat exchange tube 31. The first rib 1211, the second rib 1212, the fifth rib 1216, the first channel 1213, the second channel 1214 and the third channel 1215 are all arranged between the first surface and the second surface. The first channel 1213, the second channel 1214 and the third channel 1215 are all formed by a portion of the second surface being recessed toward the first surface, and the first channel 1213, the second channel 1214 and the third channel 1215 are connected to the first hole 1111. The first plate 11 and the second plate 12 are stacked and brazed to form the first current collector 1. The first channel 1213, the second channel 1214 and the third channel 1215 are all located inside the first current collector 1. The first channel 1213, the second channel 1214 and the third channel 1215 together form the inner cavity of the first current collector 1. The inner cavity of the heat exchange tube 31 is connected to the inner cavity of the first current collector 1. The first sub-plate 121 and the second sub-plate 122 are formed on the integrally formed second plate 12. The first current collector 1 is formed only by stacking two plates, which can reduce welds and reduce the risk of leakage of the first fluid.

[0096] According to other embodiments of the second current collector 2 of the present application, the third sub-plate 221 and the fourth sub-plate 222 can be formed in an integrally formed fourth plate 22 that is roughly plate-shaped. Optionally, the third rib 2211, the fourth rib 2212 and the fourth hole 2221 can be formed by machining. The arrangement of the third rib 2211, the fourth rib 2212 and the fourth hole 2221 is basically the same as the above-mentioned embodiment and will not be repeated here. The third plate 21 and the fourth plate 22 are stacked and brazed to form the second current collector 2. The fourth channel 2213, the fifth channel 2214 and the sixth channel 2215 are all located inside the second current collector 2. The fourth channel 2213, the fifth channel 2214 and the sixth channel 2215 together form the inner cavity of the second current collector 2. The inner cavity of the heat exchange tube 31 is connected to the inner cavity of the second current collector 2. The third sub-plate 221 and the fourth sub-plate 222 are formed on the integrally formed fourth plate 22 , and the second current collecting member 2 is formed by stacking only two plates, which can reduce welding seams and reduce the risk of leakage of the first fluid.

[0097] In other embodiments of the heat exchanger of the present application, the structural design of the heat exchanger is substantially the same as the above-mentioned embodiment, the difference being that the first opening 41 is used for the outflow of the second fluid, the second opening 42 is used for the inflow of the second fluid, the first fluid and the second fluid form a countercurrent heat exchange, and the heat exchange effect between the first fluid and the second fluid is enhanced. The first pipe 5 can also be designed to be used for the outflow of the first fluid, and the second pipe 6 is used for the inflow of the first fluid, so as to realize the countercurrent heat exchange between the first fluid and the second fluid, which is not limited by the present application.

[0098] Taking the structure of an embodiment of the heat exchanger of the present application as an example, the assembly method of the heat exchanger includes:

[0099] a: insert each layer of heat exchange tube 31 into the inner cavity of the shell 4 in sequence, the first end 3131 of each layer of heat exchange tube 31 is plugged into the first groove 82, and the second end 3132 is plugged into the second groove 92. After the plugging is completed, each layer of heat exchange tube 31 is perpendicular to the first wall 43 and the second wall 44, and the length direction of the heat exchange tube 31 is parallel to the length direction of the shell 4;

[0100] b: Then place the heat exchange element 32 between two adjacent layers of heat exchange tubes 31;

[0101] c: Insert the first port portion 311 into the first hole 1111 of the first current collecting member 1, insert the second port portion 312 into the third hole 2111 of the second current collecting member 2, push one or both of the first current collecting member 1 or the second current collecting member 2 toward the shell 4 at the same time, so that the end surface of the shell 4 close to the first current collecting member 1 is attached to the first current collecting member 1, and the end surface of the shell 4 close to the second current collecting member 2 is attached to the second current collecting member 2, and the main body 313 of the heat exchange tube 31 is accommodated in the inner cavity of the shell 4;

[0102] d: Insert the connecting member 7 into the first opening 41 and the second opening 42 respectively, so that the first cavity 73 is connected with the inner cavity of the shell 4.

[0103] According to the actual use requirements of the heat exchanger, it can be selected whether to arrange the heat exchange element 32 between the heat exchange tubes 31 of adjacent layers, that is, step b can be omitted.

[0104] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A heat exchanger, characterized in that: include: A first current collecting member (1), a second current collecting member (2) and a heat exchange core (3); The heat exchange core (3) comprises a plurality of heat exchange tubes (31) arranged in parallel, the heat exchange tubes (31) comprising a first port portion (311) and a second port portion (312), the first port portion (311) being connected to the first current collecting member (1), and the second port portion (312) being connected to the second current collecting member (2); The first current collecting member (1) comprises a first plate (11) and a second plate (12) arranged in parallel, the second plate (12) being arranged in close contact with a side of the first plate (11) away from the heat exchange tube (31), the first plate (11) comprising a first body portion (111), the first body portion (111) comprising a plurality of first holes (1111) arranged in parallel, and the first port portion (311) being plugged into the first hole (1111); The second plate (12) comprises a plurality of first ribs (1211), a plurality of second ribs (1212) and a second hole (1221) penetrating the second plate (12) along the length direction of the heat exchange tube (31); the extension direction of the first ribs (1211) and the second ribs (1212) are substantially parallel to the width direction of the heat exchange tube (31); the second plate (12) further comprises at least one third channel (1215) extending along the arrangement direction of the heat exchange tube (31); the first ribs (1211) and the second ribs (1212) are arranged opposite to each other along the width direction of the heat exchange tube (31) and are respectively located on both sides of the third channel (1215); the second hole (1221) extends along the width direction of the heat exchange tube (31); The heat exchange tube (31) is connected to at least one of the third channels (1215), a plurality of the first ribs (1211) are arranged in parallel with each other and a first channel (1213) is formed between two adjacent first ribs (1211), a plurality of the second ribs (1212) are arranged in parallel with each other and a second channel (1214) is formed between two adjacent second ribs (1212), the first channels (1213) and the second channels (1214) are both connected to the third channel (1215), and the inner cavity of the heat exchange tube (31) is connected to the third channel (1215), at least one of the first channels (1213) and at least one of the second channels (1214).

2. A heat exchanger according to claim 1, characterized in that: The second plate (12) comprises a first sub-plate (121) and a second sub-plate (122) arranged in parallel; wherein the first rib (1211) and the second rib (1212) are located on the first sub-plate (121); the first channel (1213), the second channel (1214), and the third channel (1215) are formed on the first sub-plate (121); the second hole (1221) is located on the second sub-plate (122); the second hole (1221) penetrates the second sub-plate (122) along the length direction of the heat exchange tube (31); and the second sub-plate (122) is arranged in close contact with a side of the first sub-plate (121) away from the first plate (11).

3. A heat exchanger according to claim 1, characterized in that: The second current collecting member (2) comprises a third plate (21) and a fourth plate (22) arranged in parallel, the fourth plate (22) being arranged in close contact with a side of the third plate (21) away from the heat exchange tube (31), the third plate (21) comprising a second body portion (211), the second body portion (211) comprising a plurality of third holes (2111) arranged in parallel, and the second port portion (312) being plugged into the third hole (2111); The fourth plate (22) comprises a plurality of third ribs (2211) and a plurality of fourth ribs (2212), the extension directions of the third ribs (2211) and the fourth ribs (2212) being substantially parallel to the width direction of the heat exchange tube (31), the fourth plate (22) further comprising at least one sixth channel (2215) extending along the arrangement direction of the heat exchange tube (31), the third ribs (2211) and the fourth ribs (2212) being arranged opposite to each other along the width direction of the heat exchange tube (31) and being respectively located on both sides of the sixth channel (2215), the plurality of third ribs The heat exchange tubes (31) are provided in parallel with each other, and a fourth channel (2213) is formed between two adjacent third ribs (2211); a plurality of fourth ribs (2212) are provided in parallel with each other, and a fifth channel (2214) is formed between two adjacent fourth ribs (2212); the fourth channel (2213) and the fifth channel (2214) are both connected to the sixth channel (2215); and the inner cavity of the heat exchange tube (31) is connected to the sixth channel (2215), at least one of the fourth channels (2213) and at least one of the fifth channels (2214).

4. A heat exchanger according to claim 3, characterized in that: The fourth plate (22) further comprises a fourth hole (2221) penetrating the fourth plate (22) along the length direction of the heat exchange tube (31), the fourth hole (2221) being connected to all the sixth channels (2215), and the second hole (1221) being connected to all the third channels (1215); the heat exchanger further comprises a first pipe (5) and a second pipe (6), the first pipe (5) comprising a first end cap (51) blocking one end of the first pipe (5), the second pipe (6) comprising a second end cap (61) blocking one end of the second pipe (6), the first pipe (5) comprising a second end cap (61) being arranged in close contact with the second plate (12) away from the first plate (11) The first plane wall (52) is provided on one side of the fourth plate (22), the second pipe (6) includes a second plane wall (62) which is arranged in a close contact with the side of the fourth plate (22) away from the third plate (21), the first plane wall (52) is provided with a first connecting hole (53), the first connecting hole (53) is connected to the third channel (1215) through the second hole (1221), the second plane wall (62) is provided with a second connecting hole (63), the second connecting hole (63) is connected to the sixth channel (2215) through the fourth hole (2221), and the inner cavity of the first pipe (5) is connected to the inner cavity of the second pipe (6) through the inner cavity of the heat exchange tube (31).

5. A heat exchanger according to claim 3, characterized in that: At least two third channels (1215) are provided, and the arrangement direction of at least two third channels (1215) is arranged in parallel with the arrangement direction of the heat exchange tubes (31); the second plate (12) further comprises a fifth rib (1216) located between two adjacent third channels (1215) and spacing the two adjacent third channels (1215); the fifth rib (1216) extends along the width direction of the heat exchange tube (31); the first channel (1213) is formed between the fifth rib (1216) and the first rib (1211); and the second channel (1214) is formed between the fifth rib (1216) and the second rib (1212); along the arrangement direction of the heat exchange tubes (31), The first channels (1213) located on both sides of the fifth rib (1216) are arranged at intervals, and the second channels (1214) located on both sides of the fifth rib (1216) are arranged at intervals; the second hole (1221) is connected to the third channel (1215) located on one side of the fifth rib (1216); the first channel (1213), the second channel (1214) and the third channel (1215) located on one side of the fifth rib (1216) are connected to the first channel (1213), the second channel (1214) and the third channel (1215) located on the other side of the fifth rib (1216) through the heat exchange tube (31) and the second current collecting member (2).

6. A heat exchanger according to claim 5, characterized in that: The second plate (12) further comprises a fifth hole (1222) penetrating the second plate (12) along the length direction of the heat exchange tube (31), the fifth hole (1222) being connected to at least one of the third channels (1215), and the second hole (1221) and the fifth hole (1222) being respectively located on both sides of the fifth rib (1216) along the arrangement direction of the heat exchange tube (31); the heat exchanger further comprises a first pipe (5) and a second pipe (6), the first pipe (5) comprising a first end cap (51) for sealing one end of the first pipe (5), the second pipe (6) comprising a second end cap (61) for sealing one end of the second pipe (6), the first pipe (5) comprising a first end cap (51) for sealing one end of the second pipe (6), the first pipe (5) comprising a first end cap (6 ... A first plane wall (52) on one side of a plate (11), the second pipe (6) includes a second plane wall (62) arranged in close contact with the second plate (12) on a side away from the first plate (11), the first plane wall (52) is provided with a first connecting hole (53), the second plane wall (62) is provided with a second connecting hole (63), the first connecting hole (53) is connected to at least one of the third channels (1215) through the second hole (1221), and the second connecting hole (63) is connected to at least one of the third channels (1215) through the fifth hole (1222); the inner cavity of the first pipe (5) is connected to the inner cavity of the second pipe (6) through the inner cavity of the heat exchange tube (31) and the second collector (2).

7. A heat exchanger according to any one of claims 4 or 6, characterized in that: Each of the first connecting hole (53) and the second connecting hole (63) is provided with at least one, and the extension direction of the first connecting hole (53) and the second connecting hole (63) is substantially parallel to the extension direction of the third channel (1215); when the number of the first connecting hole (53) and the second connecting hole (63) is two or more, the arrangement direction of the first connecting hole (53) and the second connecting hole (63) is substantially parallel to the extension direction of the third channel (1215).

8. A heat exchanger according to claim 6, characterized in that: The first pipe (5) further comprises a first extension portion (54), the first extension portion (54) being formed by extending the edge portion of the first connecting hole (53) toward the second plate (12), and the first extension portion (54) being inserted into the second hole (1221); at least a portion of the edge portion of the first connecting hole (53) is extended to form the first extension portion (54); The second pipe (6) also includes a second extension portion, and the edge portion of at least a portion of the second connecting hole (63) is provided with the second extension portion, and the second extension portion is formed by extending the edge portion of the second connecting hole (63) from the second pipe (6) toward the second plate (12), and the second extension portion is inserted into the fifth hole (1222).

9. A heat exchanger according to any one of claims 4 or 6, characterized in that: The first pipe (5) and the second plate (12) are integrally formed, and the second pipe (6) and the fourth plate (22) are integrally formed; or both the first pipe (5) and the second pipe (6) are integrally formed with the second plate (12).

10. A heat exchanger according to any one of claims 4 or 6, characterized in that: The heat exchanger further comprises a shell (4), the shell (4) comprising a first opening (41) and a second opening (42) respectively connected to an inner cavity of the shell (4), the first opening (41) being arranged close to the first current collecting member (1) relative to the second opening (42), and the second opening (42) being arranged close to the second current collecting member (2) relative to the first opening (41); One end of the shell (4) is sealed to the first current collecting member (1), and the other end is sealed to the second current collecting member (2); the main bodies of all the heat exchange tubes (31) are accommodated in the inner cavity of the shell (4); the first plate (11) further comprises a third extension portion (112) extending in the direction of the shell (4); the third plate (21) further comprises a fourth extension portion (212) extending in the direction of the shell (4); the third extension portion (112) and the fourth extension portion (212) are respectively fixedly connected to the shell (4).

11. A heat exchanger according to claim 4, characterized in that: The first pipe (5) further comprises a first extension portion (54), the first extension portion (54) being formed by extending the edge portion of the first connecting hole (53) toward the second plate (12), and the first extension portion (54) being inserted into the second hole (1221); at least a portion of the edge portion of the first connecting hole (53) is extended to form the first extension portion (54); The second pipe (6) also includes a second extension portion, and the second extension portion is provided on the edge portion of at least a portion of the second connecting hole (63). The second extension portion is formed by extending from the second pipe (6) toward the fourth plate (22) to form the edge portion surrounding the second connecting hole (63), and the second extension portion is inserted into the fourth hole (2221).

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