Heat exchanger

Abstract

In one embodiment, the heat exchanger comprises a first inter-plate channel and a second inter-plate channel, the first inter-plate channel and the second inter-plate channel are not communicated, the heat exchanger comprises a first hole channel, a second hole channel and a third hole channel, the heat exchanger comprises a first sub-part and a second sub-part, the second hole channel is communicated with the first inter-plate channel of the second sub-part, and the third hole channel is communicated with the second inter-plate channel of the second sub-part. The third hole channel communicates with the first inter-plate channel of the first sub-part and the first inter-plate channel of the second sub-part, the first hole channel comprises a first pipeline section and a second pipeline section, the first pipeline section communicates with the second pipeline section, the first pipeline section communicates with the first inter-plate channel of the first sub-part, and the second pipeline section communicates with the second inter-plate channel of the second sub-part; and the second pipeline section is not communicated with the first inter-plate channel of the second sub-part, and the second pipeline section is not communicated with the second inter-plate channel of the second sub-part, so that the structure of the heat exchanger is simplified.

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] The heat exchanger includes a plurality of stacked plates, and flow spaces for the first fluid and the second fluid are alternately formed between the plates, so that heat exchange occurs between the first fluid and the second fluid. The heat exchanger is usually provided with four channels perpendicular to the plates, two of which are used for the inflow and outflow of the first fluid, and the other two channels are used for the inflow and outflow of the second fluid, and the fluid is a single flow. In the related art, in order to realize multiple flows of the first fluid and at the same time realize that the inlet and outlet of the first fluid are located on the same side of the heat exchanger, a drainage pipe is usually provided in the channel of the first fluid, and the drainage pipe is welded to the plate. However, the drainage pipe and the plate need to be assembled and welded, and the structure of the heat exchanger is relatively complicated. Summary of the invention

[0003] The purpose of the present application is to provide a heat exchanger with a simple structure.

[0004] To achieve the above purpose, an implementation method of the present application adopts the following technical solution:

[0005] A heat exchanger comprises a plurality of plates, wherein the plurality of plates are stacked and arranged, the heat exchanger has a first inter-plate channel and a second inter-plate channel, the first inter-plate channel and the second inter-plate channel are not connected, the heat exchanger comprises a first hole channel, a second hole channel and a third hole channel, the heat exchanger comprises a first sub-section and a second sub-section, the second hole channel is located in the second sub-section and is connected to the first inter-plate channel of the second sub-section, the third hole channel is located in the first sub-section and the second sub-section, the third hole channel is connected to the first inter-plate channel of the first sub-section and the first inter-plate channel of the second sub-section respectively, the first hole channel comprises a first pipe section and a second pipe section, the first pipe section is connected to the second pipe section, the first pipe section is located in the first sub-section and is connected to the first inter-plate channel of the first sub-section, the second pipe section is located in the second sub-section, the second pipe section is not connected to the first inter-plate channel of the second sub-section, and the second pipe section is not connected to the second inter-plate channel of the second sub-section.

[0006] In one embodiment provided in the present application, a heat exchanger includes a first inter-plate channel and a second inter-plate channel, the first inter-plate channel and the second inter-plate channel are not connected, the heat exchanger includes a first channel, a second channel and a third channel, the heat exchanger includes a first sub-section and a second sub-section, the second channel is connected to the first inter-plate channel of the second sub-section, the third channel is respectively connected to the first inter-plate channel of the first sub-section and the first inter-plate channel of the second sub-section, the first channel includes a first pipe section and a second pipe section, the first pipe section and the second pipe section are connected, the first pipe section is connected to the first inter-plate channel of the first sub-section, the second pipe section is not connected to the first inter-plate channel of the second sub-section, and the second pipe section is not connected to the second inter-plate channel of the second sub-section. In this way, multiple processes can be realized and the structure of the heat exchanger can be simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a three-dimensional schematic diagram of a first embodiment of the heat exchanger provided by the present application from one viewing angle;

[0008] Figure 2 is a three-dimensional schematic diagram of another viewing angle of the first embodiment of the heat exchanger provided by the present application;

[0009] Figure 3 yes Figure 1 A schematic diagram of the structure of the heat exchanger from above;

[0010] Figure 4 yes Figure 1 A schematic diagram of the structure of the heat exchanger from above;

[0011] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle heat exchanger along the AA plane;

[0012] Figure 6 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle heat exchanger along the BB plane;

[0013] Figure 7 yes Figure 6 The enlarged structural diagram of the middle A part;

[0014] Figure 8 yes Figure 1 A schematic diagram of the structure of the heat exchanger from above;

[0015] Fig. 9 yes Figure 8 Schematic diagram of the cross-sectional structure of the middle heat exchanger along the CC plane;

[0016] Fig.10 yes Figure 8 Schematic diagram of the cross-sectional structure of the middle heat exchanger along the DD plane;

[0017] Fig.11 yes Figure 1 A schematic diagram of the three-dimensional structure of the local structure of the heat exchanger from one perspective;

[0018] Fig.12 yes Fig.11 A schematic diagram of the local structure of the heat exchanger from a top view;

[0019] Fig.13 yes Fig.12 Schematic diagram of the cross-sectional structure of the local structure along the EE plane;

[0020] Fig.14 is a structural schematic diagram of another embodiment of a heat exchanger from one perspective;

[0021] Fig.15 yes Fig.14 Schematic diagram of the cross-sectional structure of the middle heat exchanger along the FF plane;

[0022] Fig.16 yes Fig.14 Schematic diagram of the cross-sectional structure of the middle heat exchanger along the GG plane;

[0023] Fig.17 yes Fig.14 Schematic diagram of the cross-sectional structure of the middle heat exchanger along the HH plane;

[0024] Fig.18 is a structural schematic diagram of a partial structure of a second embodiment of a heat exchanger provided by the present application from one perspective;

[0025] Fig.19 It is a top view structural schematic diagram of the local structure of the heat exchanger in 18;

[0026] Fig. 20 It is a schematic diagram of the cross-sectional structure of the local structure of the heat exchanger in 19 along the II surface. DETAILED DESCRIPTION

[0027] The present application is further described below with reference to the accompanying drawings and specific embodiments:

[0028] Combination Figure 1-Figure 13, showing a first embodiment of the heat exchanger 100, the heat exchanger 100 comprises a plurality of plates 108, the plurality of plates 108 are stacked, the plates 108 comprise a body 3 and a flange 4, the flange 4 protrudes upward relative to the body 3, the flange 4 is arranged along the outer periphery of the body 3, and the flanges 4 of adjacent plates 108 are welded and sealed. The heat exchanger 100 comprises a first inter-plate channel s1 and a second inter-plate channel s2, at least one group of adjacent plates 108 has a first inter-plate channel s1, at least another group of adjacent plates 108 has a second inter-plate channel s2, the first inter-plate channel s1 is for the circulation of a first fluid, the second inter-plate channel s2 is for the circulation of a second fluid, the first inter-plate channel s1 and the second inter-plate channel s2 are not connected, and the first fluid and the second fluid can exchange heat.

[0029] In the present embodiment, a first inter-plate channel s1 is provided between the plate 108 and an adjacent plate 108, and a second inter-plate channel s2 is provided between the plate 108 and another adjacent plate 108. The first inter-plate channel s1 and the second inter-plate channel s2 are alternately arranged along the stacking direction of the plate 108, so that both sides adjacent to the second fluid are the first fluid, the area for heat exchange between the first fluid and the second fluid is relatively large, and the heat exchange effect of the heat exchanger 100 is relatively good. In other embodiments, two layers of the first inter-plate channel s1 may be arranged continuously, and then a layer of the second inter-plate channel s2 may be arranged, so that heat exchange between the first fluid and the second fluid may be achieved. In other embodiments, two or more layers of the second inter-plate channel s2 may be arranged continuously, and then a layer of the first inter-plate channel s1 may be arranged. In the present embodiment, the first fluid refers to a coolant, which is mainly a coolant, such as cooling water or cooling oil. The second fluid in the present application refers to a refrigerant, which is mainly a refrigerant, such as R134a, R1234yf, etc. Reference Figure 1 , define the height direction, length direction and width direction of the heat exchanger 100, the height direction is the stacking direction of the plate 108; the length direction of the plate 108 is consistent with the length direction of the heat exchanger 100, and the width direction of the plate 108 is consistent with the width direction of the heat exchanger 100; the first end 10 of the plate 108 is consistent with the first end 10 of the heat exchanger 100, and the second end 30 of the plate 108 is consistent with the second end 30 of the heat exchanger 100. For the convenience of description, the definition of the upper and lower directions is as shown in the attached drawings of the specification. Figure 1 In the present application, the directions of the adjacent sides are consistent, the adjacent sides are consistent, the adjacent side refers to the adjacent side facing upward, and the adjacent other side refers to the adjacent side facing downward; or, the adjacent side refers to the adjacent side facing downward, and the adjacent other side refers to the adjacent side facing upward.

[0030] Combination Figure 3-Figure 7In this embodiment, the heat exchanger 100 includes a first channel 101, a second channel 102 and a third channel 103. The first channel 101 and the second channel 102 are close to the first end 10, the third channel 103 is close to the second end 30, and the third channel 103 is close to the second end 30. In this embodiment, the first channel 101, the second channel 102 and the third channel 103 are used for the flow of the first fluid, that is, the first channel 101, the second channel 102 and the third channel 103 are all coolant channels. In this embodiment, along the height direction of the heat exchanger 100, the heat exchanger 100 includes a first sub-section 40 and a second sub-section 50. The first sub-section 40 is located above the second sub-section 50, and the second channel 102 is located in the second sub-section 50. At the second channel 102, the first inter-plate channel s1 is open, the second inter-plate channel s2 is closed, and the second channel 102 is connected to the first inter-plate channel s1 of the second sub-section 50. In this embodiment, the third channel 103 is located between the first sub-section 40 and the second sub-section 50. At the third channel 103, the first inter-plate channel s1 is open and the second inter-plate channel s2 is closed. The third channel 103 is connected to the first inter-plate channel s1 of the first sub-section 40 and the second sub-section 50 respectively.

[0031] In this embodiment, the first channel 101 includes a first pipe section 1011 and a second pipe section 1012. The first pipe section 1011 is located above the second pipe section 1012. Along the height direction of the heat exchanger 100, the first pipe section 1011 and the second pipe section 1012 are connected. The second pipe section 1012 is located in the second sub-section 50, and the first pipe section 1011 is located in the first sub-section 40. At the first pipe section 1011, the first inter-plate channel s1 is open, and the second inter-plate channel s2 is not open. The first pipe section 1011 is connected to the first inter-plate channel s1 of the first sub-section 40, and the first pipe section 1011 is not connected to the second inter-plate channel s2 of the first sub-section 40. At the second pipe section 1012, the first inter-plate channel s1 is not open, and the second pipe section 1012 is not connected to the first inter-plate channel s1 of the second sub-section 50. At the second pipe section 1012, the second inter-plate channel s2 is not open, and the second pipe section 1012 is not connected to the second inter-plate channel s2 of the second sub-section 50.

[0032] Through the above scheme, the second channel 102 is connected to the first inter-plate channel s1 of the second sub-section 50, the second channel 102 is connected to the third channel 103 located in the second sub-section 50 through the first inter-plate channel s1 of the second sub-section 50, the third channel 103 located in the first sub-section 40 is connected to the first inter-plate channel s1 of the first sub-section 40, and the first inter-plate channel s1 of the first sub-section 40 is connected to the first pipe section 1011 through the first inter-plate channel s1 of the first sub-section 40. This arrangement can divide the first fluid path into two loops, increase the flow path of the first fluid, and is conducive to improving the heat exchange effect of the heat exchanger. This scheme does not require additional drainage pipes, which is conducive to simplifying the structure of the heat exchanger. In other embodiments, the second channel 102 can also be located in the first sub-section 40, the second pipe section 1012 is also located in the first sub-section 40, and the first pipe section 1011 is located in the second sub-section 50.

[0033] In this embodiment, the heat exchanger 100 includes a first port 1102 and a second port 1101, the first port 1102 and the second port 1101 are located on the same side of the heat exchanger 100, the first port 1102 is connected to the second pipe section 1012, and the second port 1101 is connected to the second channel 102. In this embodiment, the first port 1102 and the second port 1101 are both located at the bottom of the heat exchanger 100, the second port 1101 is located at the bottom of the second channel 102, and the first port 1102 is located at the bottom of the second pipe section 1012. In this embodiment, the second port 1101 is the inlet of the second channel 102, the second port 1101 is for the coolant to flow into the heat exchanger 100, the first port 1102 is the outlet of the second pipe section 1012, the first port 1102 is for the coolant to flow out of the heat exchanger 100, and the first port 1102 and the second port 1101 are located on the same side of the heat exchanger 100, which is convenient for the heat exchanger to cooperate with other components, such as valve components. In other embodiments, the first port 1102 may be used for the coolant to flow into the heat exchanger 100, and the second port 1101 may be used for the coolant to flow out of the heat exchanger 100. In other embodiments, when the second channel 102 and the second pipe section 1012 are located in the first subsection 40 of the heat exchanger 100, the first port 1102 and the second port 1101 may also be located at the top of the heat exchanger 100.

[0034] According to this solution, the coolant can realize a multi-flow path, the coolant flows into the second hole 102 from the second port 1101 of the second hole 102, then flows to the first inter-plate channel s1 of the second side 50, flows from the first inter-plate channel s1 into the third hole 103, flows from the third channel 103 into the first inter-plate channel s1 of the first side 40, then flows into the first pipe section 1011, flows from the first pipe section 1011 to the second pipe section 1012, and flows out of the heat exchanger 100 from the first port 1102 of the second pipe section 1012. This arrangement enables the coolant to have two flow sections, increases the flow route of the coolant, is conducive to improving the heat exchange efficiency of the heat exchanger, does not require additional drainage pipes, and simplifies the structure of the heat exchanger. In other embodiments, the first port 1102 may be the inlet of the cooling liquid, the first port 1102 may be the inlet of the second pipe segment 1012, the second port 1101 may be the outlet of the cooling liquid, and the second port 1101 may be the outlet of the second channel 102. The flow path of the cooling liquid is as follows: the cooling liquid flows into the heat exchanger 100 from the first port 1102 of the second pipe segment 1012, flows through the first pipe segment 1011, then flows into the second channel 102 through the third channel 103, and flows out of the heat exchanger 100 from the second port 1101 of the second channel 102. The inlet and outlet of the cooling liquid may be flexibly selected as needed.

[0035] Combination Figure 5-Figure 6 , Figure 11-13 In this embodiment, along the length direction of the heat exchanger 100, the heat exchanger 100 includes a first end 10 and a second end 30. The body 3 of the plate 108 includes a heat exchange area 31, a first corner hole area 32 and a second corner hole area 33. The first corner hole area 32 is close to the first end 10 of the plate 108, and the second corner hole area 33 is close to the second end 30 of the plate 108. The heat exchange area 31 is located between the first corner hole area 32 and the second corner hole area 33. Usually, the corner hole area of ​​the plate 108 is provided with a corner hole, and each corner hole of a plurality of plates 108 is aligned along the stacking direction of the plates 108 to form a channel, and the channel is used for the flow of coolant or refrigerant.

[0036] In this embodiment, the plate 108 includes a third plate 1 and a fourth plate 2. The third plate 1 is located above the fourth plate 2. The third plates 1 are stacked and located in the first sub-section 40. The fourth plates 2 are stacked and located in the second sub-section 50.

[0037] In this embodiment, the first corner hole area 32 of the fourth plate 2 includes a first corner hole 322, and the first corner holes 322 of the fourth plate 2 are at least partially aligned along the stacking direction of the plate sheets 108 to form the second channel 102. The first corner hole area 32 of the third plate 1 does not have the first corner hole 322, and there is no channel above the second channel 102.

[0038] A first direction is defined, and the first direction is perpendicular to the stacking direction of the plates 108 . Along the first direction, the first channels 101 and the second channels 102 are arranged at intervals. In this embodiment, the heat exchanger 100 includes a first side surface 1081, and the first side surface 1081 refers to a surface enclosed by the length direction and the height direction of the heat exchanger. The first channel 101 and the second channel 102 are arranged near the first end 10, and the first channel 101 and the second channel 102 are aligned along the width direction of the heat exchanger 100. The aligned arrangement refers to the alignment along the width direction of the heat exchanger. The central axes of the first channel 101 and the second channel 102 are aligned, and the projections on the first side surface 1081 are located on the same straight line, forming two corner holes of the first channel 101 and the second channel 102 located in the first corner hole area 32 of the plate 108, and the heat exchange area 31 of the plate 108 is located between the first corner hole area 32 and the second corner hole area 33. The first channel 101 and the second channel are arranged near the first end and aligned along the width direction, which can reduce the area of ​​the plate 108 occupied by the first corner hole area 32, reduce the area of ​​the corner hole area, and increase the area of ​​the heat exchange area 31, thereby increasing the heat exchange efficiency of the heat exchanger 100. In other embodiments, along the width direction of the heat exchanger 100, the first channel 101 and the second channel 102 can also be partially aligned or staggered, so that heat exchange between the coolant and the refrigerant can be achieved. The partially aligned arrangement of the first channel 101 and the second channel 102 means that the projections of the first channel 101 and the second channel 102 on the first side 1081 partially overlap, and the staggered arrangement means that the projections of the first channel 101 and the second channel 102 on the first side 1081 do not overlap. In other embodiments, the first channel 101 and the second channel 102 can also be aligned along the length direction of the heat exchanger 100. In other embodiments, the first channel 101 and the second channel 102 can also be spaced apart along the length direction of the heat exchanger 100. In the present application, the first channel 101 is a channel, and the second channel 102 is also a channel. In the present application, the interval arrangement of the first channel 101 and the second channel 102 does not include the arrangement of the first channel 101 around the periphery of the second channel 102 , or the arrangement of the second channel 102 around the periphery of the first channel 101 .

[0039] Combination Figure 11-13In this embodiment, the plate 108 includes a first boss portion 51, an adjacent plate 108 of the plate 108 has a second boss portion 61, and another adjacent plate 108 of the plate 108 has a third boss portion 71. The local structure of the heat exchanger 100 is described in detail below. The local structure of the heat exchanger 100 includes three adjacent fourth plates 2. The three adjacent fourth plates 2 are respectively the fifth plate 5, the sixth plate 6, and the seventh plate 7. The fifth plate 5, the sixth plate 6, and the seventh plate 7 are stacked in sequence. The sixth plate 6 is located between the fifth plate 5 and the seventh plate 7. The fifth plate 5 and the seventh plate 7 are two adjacent plates 108 of the fifth plate 5. There is a first inter-plate channel s1 between the fifth plate 5 and the sixth plate 6, and there is a second inter-plate channel s2 between the sixth plate 6 and the seventh plate 7. The first inter-plate channel s1 and the second inter-plate channel s2 are not connected.

[0040] The fifth plate 5 includes a first boss portion 51, which protrudes downward relative to the plate surface of the fifth plate 5, and has a groove on the side facing away from the sixth plate 6. The first boss portion 51 is arranged along the outer periphery of the first corner hole 322, and the end of the first boss portion 51 is parallel to the plate surface of the plate 108.

[0041] The sixth plate 6 includes a second boss portion 61, which protrudes upward relative to the plate surface of the sixth plate 6, and the second boss portion 61 has a groove on the side facing the seventh plate 7. The second boss portion 61 is arranged along the outer periphery of the first corner hole 322, and the end of the second boss portion 61 is parallel to the plate surface of the plate 108.

[0042] The seventh plate 7 includes a third boss portion 71, which protrudes downward relative to the plate surface of the seventh plate 7, and has a groove. The third boss portion 71 is arranged along the outer periphery of the first corner hole 322, and the end of the third boss portion 71 is parallel to the plate surface of the plate 108.

[0043] Combination Figure 3-Figure 6 In this embodiment, the heat exchanger 100 includes a first opening 20, and the second boss portion 61 and the third boss portion 71 form the first opening 20. The first opening 20 is connected to the first inter-plate channel s1. At the second hole 102, the first inter-plate channel s1 is opened, and the coolant can flow from the second hole 102 to the first inter-plate channel s1 through the first opening 20. In this embodiment, the end of the first boss portion 51 and the end of the second boss portion 61 are in contact and welded and sealed. The end of the first boss portion 51 and the end of the second boss portion 61 are welded along the entire periphery of the first corner hole 322. At the second hole 102, the second inter-plate channel s2 is not opened, and the second hole 102 and the second inter-plate channel s2 are not connected. In this way, the coolant can only enter the first inter-plate channel s1 from the second hole 102, and will not enter the second inter-plate channel s2. Through this structural setting, the coolant can be controlled to flow from the coolant channel into the first inter-plate channel s1, and will not flow into the second inter-plate channel s2.

[0044] In this embodiment, at the first pipe section 1011, the first inter-board channel s1 is open, and the second inter-board channel s2 is not open. The first pipe section 1011 can be connected to the first inter-board channel s1 of the first sub-section 40, and the first pipe section 1011 and the second inter-board channel s2 of the first sub-section 40 are not connected.

[0045] In this embodiment, at the third hole 103, the first inter-plate channel s1 is open, and the second inter-plate channel s2 is not open. The third hole 103 can be connected to the first inter-plate channel s1, and the third hole 103 is not connected to the second inter-plate channel s2.

[0046] In other embodiments, the fifth plate 5 includes a plurality of first bosses 51, and the fifth plate 5 also includes a plurality of first flat portions (not shown in the figure). The first flat portions and the plate surface of the fifth plate 5 are substantially parallel, and substantially parallel includes parallel and approximately parallel, and there is a first flat portion between at least one group of adjacent first bosses 51. The sixth plate 6 includes a plurality of second bosses 61 that cooperate with the first bosses 51, and the sixth plate 6 includes a plurality of second flat portions (not shown in the figure) that cooperate with the first flat portions. The seventh plate 7 includes a plurality of third bosses 71 that cooperate with the second bosses 61, and the seventh plate 7 includes a plurality of third flat portions (not shown in the figure) that cooperate with the second flat portions. The fifth plate 5, the sixth plate 6, and the seventh plate 7 are stacked, and the first flat portions and the second flat portions are in contact and welded. A first opening 20 is formed between the second boss 61 and the third boss 71. Such a configuration can also realize that the coolant flows from the second channel 102 through the first opening 20 into the first inter-plate channel s1, and is also conducive to reducing the pressure drop of the coolant. The end of the second boss portion 61 and the end of the third boss portion 71 are in contact and welded to seal, and the second flat portion and the third flat portion are in contact and welded, so that the second inter-plate channel s2 of the second hole 102 is not open, and the coolant does not enter the second inter-plate channel s2 from the second hole 102. Figure 7 In this embodiment, the fourth plate 2 includes a first plate 8 and a second plate 9, the first plate 8 and the second plate 9 are alternately stacked, the first plate 8 includes a first hole 81, the first plate 8 includes a first welding portion 811 and a second welding portion 812, and the first welding portion 811 and the second welding portion 812 are arranged around the first hole 81. In this embodiment, the second welding portion 812 is closer to the first hole 81 relative to the first welding portion 811, one end of the first welding portion 811 is connected to the body 3 of the first plate 8, and the other end of the first welding portion 811 is connected to the second welding portion 812. In this embodiment, the first welding portion 811 is tilted downward relative to the plate surface of the first plate 88, and the second welding portion 812 is substantially parallel to the plate surface of the first plate 8.

[0047] In this embodiment, the second plate 9 includes a second hole 91, and the second plate 9 includes a third welding portion 911 and a fourth welding portion 912, and the third welding portion 911 and the fourth welding portion 912 are arranged around the second hole 91. The fourth welding portion 912 is relatively close to the second hole 91 of the third welding portion 911, one end of the third welding portion 911 is connected to the body 3 of the second plate 9, and the other end of the third welding portion 911 is connected to the fourth welding portion 912. In this embodiment, the first welding portion 811 and the third welding portion 911 are inclined in opposite directions, the third welding portion 911 is inclined upward relative to the plate surface of the second plate 9, and the fourth welding portion 912 is roughly parallel to the plate surface of the second plate 9. The roughly parallel mentioned in this application includes parallel and approximately parallel.

[0048] In this embodiment, along the height direction of the heat exchanger 100, the first welding portion 811 is aligned with the third welding portion 911 of the second plate 9 adjacent to the first plate 8, and the second welding portion 812 is welded and sealed with the fourth welding portion 912 of the second plate 9 adjacent to the first plate 8. The second welding portion 812 and the fourth welding portion 912 block the communication between the second pipe section 1012 and the first inter-plate channel s1 of the second sub-section 50. Through the welding of the second welding portion 812 and the fourth welding portion 912, the first inter-plate channel s1 is not opened in the second pipe section 1012, and the second pipe section 1012 and the first inter-plate channel s1 are not connected. Specifically, along the direction perpendicular to the stacking direction of the plate 108, the second pipe section 1012 and the first inter-plate channel s1 are not connected. In this way, the coolant can have multiple flow sections, and no additional parts are required. The structure of the heat exchanger 100 is simple. In addition, after the plate 108 and other parts are assembled, such as the pipe, the fin, etc., the whole is put into the brazing furnace for brazing, and the molding process of the heat exchanger 100 is relatively simple. The present application realizes multiple flows of the coolant by welding the second welding part 812 and the fourth welding part 912. After the plate 108 and other parts are assembled, the whole is put into the brazing furnace for brazing and forming. The forming process of the heat exchanger 100 is simple. The multi-flow of the coolant is realized by setting a drainage tube. The drainage tube and the plate 108 are assembled and welded. In the present application, there is no need to set a drainage tube, which can save parts. At the same time, there is no need to assemble the drainage tube additionally, which simplifies the forming process of the heat exchanger 100. In other embodiments, the second welding part 812 and the fourth welding part 912 of the second plate 9 adjacent to the first plate 8 can also be bonded, fixed and sealed.

[0049] In this embodiment, the first welding part 811, the second welding part 812 and the body 3 of the first plate 8 are an integral structure, and the integral structure means that they do not need to be connected by other means. The third welding part 911, the fourth welding part 912 and the body 3 of the second plate 9 are an integral structure, so that the manufacture of the plate 108 is simple. In other embodiments, the first welding part 811, the second welding part 812 and the body 3 of the first plate 8 can also be a separate structure, and the first welding part 811 and the body 3 of the first plate 8 are welded and connected, and the third welding part 911, the fourth welding part 912 and the body 3 of the second plate 9 can also be a separate structure, and the third welding part 911 and the body 3 of the second plate 9 are welded and connected. In other embodiments, along the height direction of the heat exchanger 100, the first welding part 811 and the third welding part 911 of the second plate 9 adjacent to the first plate 8 can also be partially aligned.

[0050] Combine 3- Figure 7 The body 3 of the plate 108 includes a base portion 34, and the first plate 8 includes a first sealing portion 813. One end of the first sealing portion 813 is connected to the base portion 34 of the first plate 8, and the other end of the first sealing portion 813 is connected to the first welding portion 811. The first sealing portion 813 protrudes toward the second plate 9 on the adjacent side relative to the plate surface of the first plate 8, and the first sealing portion 813 protrudes downward. The second plate 9 includes a second sealing portion 913. One end of the second sealing portion 913 is connected to the base portion 34 of the second plate 9, and the other end of the second sealing portion 913 is connected to the third welding portion 911. The second sealing portion 913 protrudes toward the first plate 8 on the adjacent side relative to the plate surface of the second plate 9, and the second sealing portion 913 protrudes upward. The protrusion directions of the first sealing portion 813 and the second sealing portion 913 are opposite, and the first sealing portion 813 and the second sealing portion 913 are relatively protruding. The second sealing portion 913 and the first sealing portion 813 of the first plate 8 on the adjacent side are welded and sealed, so that the second inter-plate channel s2 is not opened at the second pipe section 1012, and the second pipe section 1012 and the second inter-plate channel s2 are not connected. In other embodiments, the second sealing portion 913 and the first sealing portion 813 of the first plate 8 on the adjacent side can also be bonded, fixed and sealed.

[0051] Combination Figure 5-Figure 6In this embodiment, the second channel 102 is the inlet channel of the coolant, the third channel 103 is the flow channel of the coolant, and the first channel 101 is the outflow channel of the coolant. The coolant flows into the second channel 102 from the inlet of the second channel 102, then flows into the first inter-plate channel s1 of the second sub-section 50 from the second channel 102, then flows to the third channel 103, flows into the first inter-plate channel s1 of the first sub-section 40 from the third channel 103, then flows into the first pipe section 1011 of the first channel 101, flows directly from the first pipe section 1011 to the second pipe section 1012, and flows out of the heat exchanger 100 from the second pipe section 1012. The coolant has two flow pipe sections, which increases the flow path of the coolant, increases the heat exchange area between the coolant and the refrigerant, and improves the heat exchange performance of the heat exchanger 100. In this embodiment, the second channel 102 and the third channel 103 are arranged diagonally, which can increase the flow path of the coolant and improve the heat exchange effect of the heat exchanger. The positions of the second channel 102, the third channel 103, and the third channel 103 can be adjusted. This embodiment only illustrates a flow path of the coolant. In other embodiments, the inlet and outlet of the coolant can also be selected as needed, and the coolant can also be set to three process sections, four process sections, etc.

[0052] In other embodiments, the first welding portion 811 may be vertically arranged downward relative to the plate surface of the plate 108, the second welding portion 812 may be roughly parallel to the plate surface of the plate 108, the third welding portion 911 may be vertically arranged upward relative to the plate surface of the plate 108, the fourth welding portion 912 may be roughly parallel to the plate surface of the plate 108, and the second welding portion 812 and the fourth welding portion 912 may be in contact and welded.

[0053] In another embodiment, the first welding portion 811 is arranged roughly parallel to the plate surface of the plate 108, the second welding portion 812 is arranged obliquely relative to the plate surface of the plate 108, the third welding portion 911 and the fourth welding portion 912 are both parallel to the plate surface of the plate 108, and the second welding portion 812 and the fourth welding portion 912 are in contact and welded to seal.

[0054] In this embodiment, the height ratio of the first pipe section 1011 to the second pipe section 1012 is 1:1, which is beneficial to reducing the pressure drop of the coolant and improving the heat exchange performance of the heat exchanger 100 compared with other height ratios. In this embodiment, the height ratio of the first subsection 40 to the second subsection 50 is also 1:1, the second channel 102 is located in the second subsection 50 of the heat exchanger 100, the height of the second channel 102 is approximately half the stacking height of the plate 108, and the height ratio of the second channel 102 to the first channel 101 is 1:2, which can help reduce the pressure drop of the coolant and improve the heat exchange performance of the heat exchanger 100, and can also allow the coolant to flow into each first inter-plate channel s1, thereby improving the heat exchange performance of the heat exchanger 100. Of course, in other embodiments, the height ratio of the first pipe segment 1011 to the second pipe segment 1012 may be 1:1, and the height ratio of the second hole 102 to the first hole 101 may not be 1:2; or the height ratio of the second hole 102 to the first hole 101 may be 1:2, and the height ratio of the first pipe segment 1011 to the second pipe segment 1012 may not be 1:1. In other embodiments, the height ratio of the second hole 102 to the first hole 101 may not be 1:2, and the height ratio of the first pipe segment 1011 to the second pipe segment 1012 may not be 1:1.

[0055] Combination Figure 14-17 In another embodiment, the heat exchanger 100 includes a first flow channel 107, and the heat exchanger 100 also includes a baffle 1007. The baffle 1007 is located in the first flow channel 107, and the baffle 1007 divides the first flow channel 107 into a second channel 102 and a seventh channel 1071. Along the height direction of the heat exchanger 100, the second channel 102 and the seventh channel 1071 are not connected, so that a dual-flow loop of the coolant can be realized, and the heat exchange effect of the heat exchanger can be improved. In this embodiment, the baffle 1007 is formed by extending the body 3 of the plate 108, so that the molding process of the heat exchanger 100 is simple. In other embodiments, the baffle 1007 and the body 3 can also be a split structure, and the baffle 1007 and the body 3 are welded and fixed and sealed.

[0056] Combination Figure 1-Figure 3 , Figure 9-10, the heat exchanger 100 further includes a fourth channel 104, a fifth channel 105 and a seventh pipe segment 1061, the seventh pipe segment 1061 is located in the second sub-portion 50 of the heat exchanger 100, and there is no channel above the seventh pipe segment 1061. The fourth channel 104 is arranged near the first end 10, and the fifth channel 105 and the seventh pipe segment 1061 are arranged near the second end 30. In this embodiment, the fourth channel 104, the second channel 102, and the first channel 101 are arranged in alignment along the width direction of the heat exchanger 100, which is conducive to increasing the area of ​​the heat exchange zone 31 and increasing the heat exchange performance of the heat exchanger 100. Of course, in other embodiments, the fourth channel 104, the second channel 102, and the first channel 101 can also be partially aligned or staggered.

[0057] In this embodiment, the fifth channel 105 includes a fifth pipe segment 1051 and a sixth pipe segment 1052. The fifth pipe segment 1051 is located above the sixth pipe segment 1052. The fifth pipe segment 1051 and the sixth pipe segment 1052 are aligned and arranged along the height direction of the heat exchanger 100, and the fifth pipe segment 1051 and the sixth pipe segment 1052 are connected. At the fifth pipe segment 1051, the second inter-plate channel s is opened, and along the direction perpendicular to the stacking direction of the plates 108, the fifth pipe segment 1051 is connected to the second inter-plate channel s2 at the fifth pipe segment 1051. At the fifth pipe segment 1051, the first inter-plate channel s1 is not opened, and the fifth pipe segment 1051 is not connected to the first inter-plate channel s1. At the sixth pipe segment 1052, the second inter-plate channel s2 is opened, and the sixth pipe segment 1052 is connected to the second inter-plate channel s2 at the sixth pipe segment 1052. At the sixth pipe segment 1052, the first inter-plate channel s1 is not opened, and the sixth pipe segment 1052 is not connected to the first inter-plate channel s1.

[0058] Combination Figure 9-10In this embodiment, the heat exchanger 100 includes a partition plate 1003, which is located in the fourth channel 104. The fourth channel 104 includes a third pipe segment 1041 and a fourth pipe segment 1042. The partition plate 1003 divides the fourth channel 104 into the third pipe segment 1041 and the fourth pipe segment 1042. The third pipe segment 1041 is located above the fourth pipe segment 1042. The third pipe segment 1041 is not connected to the fourth pipe segment 1042 along the height direction of the heat exchanger 100. At the third pipe segment 1041, the second inter-plate channel s2 is open, and the first inter-plate channel s1 is not open. In the direction perpendicular to the stacking direction of the plates 108, the third pipe segment 1041 is connected to the second inter-plate channel s2, and the third pipe segment 1041 is not connected to the first inter-plate channel s1. At the fourth pipe section 1042, the second inter-plate channel s2 is open, the first inter-plate channel s1 is not open, the fourth pipe section 1042 is connected to the second inter-plate channel s2, and the fourth pipe section 1042 is not connected to the first inter-plate channel s1. In this embodiment, the partition plate 1003 is formed by extending the body 3 of the plate 108, so that the molding process of the heat exchanger 100 is simple. In other embodiments, the partition plate 1003 and the body 3 are separate structures, and the partition plate 1003 and the body 3 are welded and fixed and sealed.

[0059] Combination Figure 9-10 In this embodiment, the fourth plate 2 includes an eighth plate 22 and a ninth plate 23, the eighth plate 22 is stacked along the stacking direction of the plates 108, the ninth plate 23 is stacked along the stacking direction of the plates 108, the eighth plate 22 is located above the ninth plate 23, and the eighth plate 22 and the ninth plate 23 are located in the second sub-section 50 of the heat exchanger 100. The eighth plate 22 includes a fifth welding portion 231 and a sixth welding portion 232, and the fifth welding portion 231 and the sixth welding portion 232 are located on the periphery of the sixth pipe segment 1052. The fifth welding portion 231 is close to the sixth pipe segment 1052 relative to the sixth welding portion 232, and the sixth welding portion 232 is arranged to be inclined downward relative to the plate surface of the eighth plate 22, and the fifth welding portion 231 and the plate surface of the eighth plate 22 are arranged in parallel. In this embodiment, the ninth plate 23 on the adjacent side of the eighth plate 22 includes a seventh welding portion 21 and an eighth welding portion 233. The seventh welding portion 21 and the eighth welding portion 233 are located on the outer periphery of the sixth pipe segment 1052. The seventh welding portion 21 is close to the sixth pipe segment 1052 relative to the eighth welding portion 233. The eighth welding portion 233 is inclined downward relative to the plate surface of the ninth plate 23. The seventh welding portion 21 and the plate surface of the ninth plate 23 are arranged in parallel.

[0060] The end of the fifth welding part 231 and the end of the seventh welding part 21 are in contact and welded, so that the second inter-plate channel s2 at the sixth pipe section 1052 is not open, and the sixth pipe section 1052 and the second inter-plate channel s2 at the sixth pipe section 1052 are not connected in the direction perpendicular to the stacking direction of the plate 108. This arrangement enables the refrigerant to have multiple flows. Usually, the sixth pipe section 1052 and the second inter-plate channel s2 at the sixth pipe section 1052 are not connected by setting a drainage pipe. In this application, the fifth welding part 231 and the seventh welding part 21 have the function of a drainage pipe after being welded and connected, and there is no need to set a drainage pipe, which can save parts.

[0061] In this embodiment, the fifth welding part 231 and the seventh welding part 21 are arranged in cooperation, the structure of the fifth welding part 231 is basically the same as the structure of the second welding part 812 described above, the structure of the sixth welding part 232 is basically the same as the structure of the first welding part 811 described above, the structure of the seventh welding part 21 is basically the same as the structure of the fourth welding part 912 described above, and the structure of the eighth welding part 233 is basically the same as the structure of the third welding part 911 described above, which will not be repeated here.

[0062] In this embodiment, the eighth plate 22 is part of the first plate 1 described above, and the number of the eighth plate 22 is less than the first plate 1, and the ninth plate 23 is part of the second plate 2 described above, and the number of the ninth plate 23 is less than the second plate 2. In other embodiments, the eighth plate 22 may also be part of the second plate 2 described above, and the number of the eighth plate 22 is less than the second plate 2, and the ninth plate 23 may be part of the first plate 1 described above, and the number of the ninth plate 23 is less than the first plate 1.

[0063] In this embodiment, the heat exchanger 100 cooperates with a liquid storage tank (not shown in the figure), and the liquid storage tank is used to store refrigerant. The liquid storage tank includes an inlet and an outlet, a refrigerant outlet of the heat exchanger 100 is connected to the inlet of the liquid storage tank, and a refrigerant inlet of the heat exchanger 100 is connected to the outlet of the liquid storage tank. The refrigerant passes through the liquid storage tank, which is conducive to making the refrigerant in the heat exchanger 100 that exchanges heat with the coolant more liquid, so that the heat exchange effect between the refrigerant and the coolant is better.

[0064] Combination Figure 9-10In this embodiment, a refrigerant flow route is provided. The refrigerant flows into the third pipe segment 1041 from the upper inlet of the third pipe segment 1041 of the fourth channel 104. Because of the partition plate 1003, the refrigerant does not enter the fourth pipe segment 1042 first. The refrigerant flows from the third pipe segment 1041 into the second inter-plate channel s2 on the side where the third pipe segment 1041 is located, and flows from the second inter-plate channel s2 on the side where the third pipe segment 1041 is located to the fifth pipe segment 1051 of the fifth channel 105. The refrigerant flows directly from the fifth pipe segment 1051 to the fourth channel 1042. The sixth pipe segment 1052 then flows out of the heat exchanger 100, enters the liquid storage tank through the inlet of the liquid storage tank, then flows out of the liquid storage tank from the outlet of the liquid storage tank, and then flows into the seventh pipe segment 1061. The refrigerant flows from the seventh pipe segment 1061 into the second inter-plate channel s2 on the side where the seventh pipe segment 1061 is located, and then flows from the second inter-plate channel s2 on the side where the seventh pipe segment 1061 is located into the fourth pipe segment 1042 of the fourth channel 104, and flows out of the heat exchanger 100 from the fourth channel 104. This arrangement can realize multiple flows of the refrigerant, and can also allow more liquid refrigerant to participate in heat exchange, thereby improving the heat exchange efficiency of the heat exchanger 100; in addition, in this embodiment, the flow directions of the refrigerant and the coolant are opposite, and the refrigerant and the coolant are in a countercurrent state, which can further improve the heat exchange effect of the refrigerant and the coolant. The above scheme only illustrates a flow route diagram of a coolant and a refrigerant. In other embodiments, the refrigerant or the coolant can also have more flow segments. In other embodiments, the fourth pipe segment 1042 can also be located above the third pipe segment 1041, the seventh pipe segment 1061 is located in the first sub-section 40 of the heat exchanger 100, and the sixth pipe segment 1052 is located above the fifth pipe segment 1051. The position of the refrigerant channel can be adjusted as needed, and the inlet and outlet of the refrigerant can also be adjusted as needed.

[0065] In other embodiments, the heat exchanger 100 includes a drainage pipe (not shown in the figure), at least part of the drainage pipe is located in the sixth pipe section 1052, the outer peripheral wall of the drainage pipe is welded to the ninth plate 23, and the outer peripheral wall of the drainage pipe blocks the refrigerant from entering the second inter-plate channel s2, so that multiple flow sections of the refrigerant can also be realized. In other embodiments, the cooling liquid side can also use a drainage pipe to realize multiple flows, and the refrigerant side can use the fifth welding part 231 to weld to realize multiple flows. In this way, the structure of the heat exchanger 100 can also be simplified relative to the drainage pipe solution on both the cooling liquid side and the refrigerant side.

[0066] Combination Figure 14-17In another embodiment, the heat exchanger 100 further includes a sixth channel 106, and the heat exchanger 100 includes a diverter plate 1004, the diverter plate 1004 is located in the sixth channel 106, and the diverter plate 1004 divides the sixth channel 106 into a seventh pipe segment 1061 and an eighth pipe segment 1062, and along the height direction of the heat exchanger 100, the seventh pipe segment 1061 and the eighth pipe segment 1062 are not connected. In this way, a multi-flow of the refrigerant can also be achieved. In this embodiment, the diverter plate 1004 is formed by extending the body 3 of the plate 108, so that the molding process of the heat exchanger 100 is simple. In other embodiments, the diverter plate 1004 and the body 3 are split structures, and the diverter plate 1004 and the body 3 are welded, fixed and sealed.

[0067] Combination Figure 9-10 In this embodiment, the height ratio of the third pipe segment 1041 to the fourth pipe segment 1042 is 2:1, the height ratio of the fifth pipe segment 1051 to the sixth pipe segment 1052 is also 2:1, and the height ratio of the seventh pipe segment 1061 to the fifth channel 105 is 1:2. The refrigerant is likely to be in liquid state in a supercooled state and in gaseous state in a superheated state. Such a height ratio can make the heat exchange effect of the refrigerant better and match the heat exchange characteristics of the refrigerant; in addition, such a height setting can allow the refrigerant to enter each second inter-plate channel s2, making full use of the heat exchange space of the heat exchanger 100. Of course, in other embodiments, the height ratio of the third pipe segment 1041 to the fourth pipe segment 1042 may not be 2:1, the height ratio of the fifth pipe segment 1051 to the sixth pipe segment 1052 may not be 2:1, and the height ratio of the seventh pipe segment 1061 to the fifth channel 105 may not be 1:2.

[0068] Combination Figure 1-Figure 2 , Figure 5-Figure 6The heat exchanger 100 further includes a top plate 110 and a bottom plate 120. Along the height direction of the heat exchanger 100, the top plate 110 and the bottom plate 120 are located on both sides of the heat exchanger 100, the top plate 110 is located at the top of the heat exchanger 100, and the bottom plate 120 is located at the bottom of the heat exchanger 100. The second port 1101 is located at the bottom plate 120, and the first port 1102 is located at the bottom plate 120. The top plate 110 includes a fourth port 1201, which is the total inlet of the refrigerant, and the fourth port 1201 is connected to the third pipe segment 1041. The bottom plate 120 further includes a fifth port 1202, a sixth port 1203 and a fourth outlet 1204, the fifth port 1202 is connected to the fifth channel 105, the sixth port 1203 is connected to the seventh pipe segment 1061, the fourth outlet 1204 is connected to the fourth pipe segment 1042, and the fourth outlet 1204 is the total outlet of the refrigerant. The thickness of the top plate 110 and the bottom plate 120 is higher than that of the plate 108. The arrangement of the top plate 110 and the bottom plate 120 can increase the strength of the heat exchanger 100. In addition, the arrangement of the top plate 110 can also prevent the coolant from flowing out of the heat exchanger 100 from the third channel 103. The top plate 110 blocks the upper end of the third channel 103. The arrangement of the top plate 110 can also prevent the refrigerant from flowing out of the heat exchanger 100 from the third pipe segment 1041 or the fifth pipe segment 1051.

[0069] Combination Figure 18-Figure 20 , indicating the second embodiment of the heat exchanger 100, the first plate 8 includes a first welding portion 811 and a second welding portion 812, and the second welding portion 812 is welded and sealed with the second welding portion 812 of the other first plate 8 on the adjacent side. In this embodiment, the first welding portion 811 and the second welding portion 812 are arranged around the first hole 81, the first welding portion 811 is arranged parallel to the plate surface of the plate 108, and the second welding portion 812 is arranged obliquely toward the other first plate 8 on the adjacent side relative to the plate surface of the plate 108, and the second plate 9 does not have a third welding portion 911 and a fourth welding portion 912. The second welding portion 812 contacts and welds and seals with the second welding portion 812 of the other first plate 8 on the adjacent side. Such an arrangement can also prevent the first inter-plate channel s1 of the second pipeline segment 1012 from opening, preventing the coolant of the second pipeline segment 1012 from entering the first inter-plate channel s1 at the second pipeline segment 1012, and realizing a multi-flow loop of the coolant; and the second plate 9 does not need to be provided with a welding portion, which is conducive to simplifying the manufacturing process of the second plate 9. In this embodiment, the first welding portion 811, the second welding portion 812 and the body 3 of the plate 108 are an integrated structure, which facilitates the molding of the heat exchanger. Compared with the separate structures of the first welding portion 811 and the body 3 of the plate 108 and then welded, the integrated structure can also increase the strength of the heat exchanger.

[0070] In other embodiments, the second welding portion 812 may also be arranged substantially vertically relative to the plate surface of the plate 108, so that a multi-flow circuit of the coolant can also be realized. In other embodiments, the first plate 8 may include the second welding portion 812, the first plate 8 may not have the first welding portion 811, the second welding portion 812 may be connected to the body 3 of the plate 108, the second welding portion 812 may be arranged obliquely relative to the plate surface of the plate 108 toward the other first plate 8 on the adjacent side, and the second welding portion 812 and the second welding portion 812 of the other first plate 8 on the adjacent side may be welded and sealed.

[0071] In another embodiment, the first plate 8 may include a first welding portion 811 and a second welding portion 812, the second plate 9 may include a third welding portion 911 and a fourth welding portion 912, the first welding portion 811 may be arranged parallel to the plate surface of the plate 108, the second welding portion 812 may be arranged obliquely relative to the plate surface of the plate 108 toward the second plate 9 on the adjacent side, the third welding portion 911 may be arranged parallel to the plate surface of the second plate 9, along the height direction of the heat exchanger 100, the third welding portion 911 and the first welding portion 811 may be arranged in alignment, the second welding portion 812 may be arranged obliquely relative to the plate surface of the second plate 9 toward the first plate 8 on the adjacent side, the second welding portion 812 and the fourth welding portion 912 may be arranged in the same oblique direction, the second welding portion 812 of the first plate 8 and the fourth welding portion 912 of the second plate 9 on the adjacent side may be welded and sealed, so that a multi-pass flow of the coolant may be realized. In another embodiment, along the height direction of the heat exchanger 100, the third welding portion 911 and the first welding portion 811 may also be arranged partially in alignment,

[0072] The above welding parts can be used in combination. The welding part structure at the sixth pipeline segment 1052 can adopt the structure of the welding part at the second pipeline segment 1012 in the first embodiment, or can adopt the structure of the welding part at the second pipeline segment 1012 in the second embodiment. The welding parts at the sixth pipeline segment 1052 and the second pipeline segment 1012 can have the same structure, or they can be different. In other embodiments, different welding part structures can be used in combination for the same pipeline segment.

[0073] In addition, to improve the heat exchange effect of the heat exchanger 100, fins (not shown in the figure) can be arranged between adjacent plates 108, or the plates 108 can be point wave plates 108 to increase the flow path of the coolant and the refrigerant and improve the heat exchange effect of the heat exchanger 100.

[0074] It should be noted that: It should be noted that: the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although this specification has described the present application in detail with reference to the above embodiments, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify or replace the application with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A heat exchanger (100), characterized in that: The heat exchanger (100) comprises a plurality of plates (108), wherein the plurality of plates (108) are stacked and arranged, wherein the heat exchanger (100) has a first inter-plate channel (s1) and a second inter-plate channel (s2), wherein the first inter-plate channel (s1) and the second inter-plate channel (s2) are not connected, wherein the heat exchanger (100) comprises a first hole channel (101), a second hole channel (102) and a third hole channel (103), wherein the heat exchanger (100) comprises a first sub-section (40) and a second sub-section (50), wherein the second hole channel (102) is located in the second sub-section (50) and is connected to the first inter-plate channel (s1) of the second sub-section (50), wherein the third hole channel (103) is located in the first sub-section (40) and the second sub-section (50), wherein the third hole channel (103) is connected to the first sub-section (40) and the second sub-section (50), respectively. The first inter-plate channel (s1) of the first sub-section (40) and the first inter-plate channel (s1) of the second sub-section (50) are connected, the first channel (101) comprises a first pipe section (1011) and a second pipe section (1012), the first pipe section (1011) and the second pipe section (1012) are connected, the first pipe section (1011) is located in the first sub-section (40) and is connected to the first inter-plate channel (s1) of the first sub-section (40), the second pipe section (1012) is located in the second sub-section (50), the second pipe section (1012) is not connected to the first inter-plate channel (s1) of the second sub-section (50), and the second pipe section (1012) is not connected to the second inter-plate channel (s2) of the second sub-section (50).

2. The heat exchanger (100) according to claim 1, characterized in that: The heat exchanger (100) includes a first channel (101), and the heat exchanger (100) includes a second channel (102), defining a first direction, wherein the first direction is perpendicular to the stacking direction of the plates (108), and along the first direction, the first channel (101) and the second channel (102) are arranged at intervals.

3. The heat exchanger (100) according to claim 2, characterized in that: The heat exchanger (100) comprises a first port (1102) and a second port (1101), wherein the first port (1102) and the second port (1101) are located on the same side of the heat exchanger (100), the first port (1102) is connected to the second pipe section (1012), and the second port (1101) is connected to the second channel (102).

4. The heat exchanger (100) according to claim 3, characterized in that: Along the width direction of the heat exchanger (100), the first channel (101) and the second channel (102) are aligned; or along the length direction of the heat exchanger (100), the first channel (101) and the second channel (102) are aligned.

5. The heat exchanger (100) according to claim 2, 3 or 4, characterized in that: The second sub-section (50) comprises a first plate (8) and a second plate (9), wherein the first plate (8) and the second plate (9) are alternately stacked, the first plate (8) has a first hole (81), and the second plate (9) has a second hole (91); The first plate (8) comprises a first welding portion (811) and a second welding portion (812), the first welding portion (811) and the second welding portion (812) being arranged around the first hole (81), the second plate (9) comprises a third welding portion (911) and a fourth welding portion (912), the third welding portion (911) and the fourth welding portion (912) being arranged around the second hole (91), the second welding portion (812) being welded and sealed with the fourth welding portion (912) of the second plate (9) adjacent to the first plate (8), and along the height direction of the heat exchanger (100), the first welding portion (811) and the third welding portion (911) of the second plate (9) adjacent to the first plate (8) are at least partially aligned; Alternatively, the first plate (8) comprises a first welding portion (811) and a second welding portion (812), the first welding portion (811) and the second welding portion (812) being arranged around the first hole (81), the second welding portion (812) being welded and sealed to the second welding portion (812) of the first plate (8) on an adjacent side, and along the height direction of the heat exchanger (100), the first welding portions (811) of the two adjacent first plates (8) are at least partially aligned.

6. The heat exchanger (100) according to claim 5, characterized in that ,, the plate (108) further comprises a body (3), and the first hole (81) is located in the body (3); The second welding portion (812) is closer to the first hole (81) relative to the first welding portion (811); the plate (108) further comprises a body (3); one end of the first welding portion (811) is connected to the body (3) of the first plate (8); the other end of the first welding portion (811) is connected to the second welding portion (812); the fourth welding portion (912) is closer to the second hole (91) relative to the third welding portion (911); one end of the third welding portion (911) is connected to the body (3) of the second plate (9); the other end of the third welding portion (911) is connected to the fourth welding portion (912); Alternatively, the second welding portion (812) is closer to the first hole (81) relative to the first welding portion (811), one end of the first welding portion (811) is connected to the body (3) of the first plate (8), and the other end of the first welding portion (811) is connected to the second welding portion (812).

7. The heat exchanger (100) according to claim 6, characterized in that: The first welding portion (811) is arranged obliquely relative to the plate surface of the plate (108), the second welding portion (812) is parallel to the plate surface of the plate (108), the third welding portion (911) is arranged obliquely relative to the plate surface of the plate (108), the first welding portion (811) and the third welding portion (911) are inclined in opposite directions, the fourth welding portion (912) is parallel to the plate surface of the plate (108), and the second welding portion (812) and the fourth welding portion (912) are in contact and welded; Alternatively, the first welding portion (811) is arranged obliquely relative to the plate surface of the plate (108), the second welding portion (812) is parallel to the plate surface of the plate (108), the third welding portion (911) and the fourth welding portion (912) are both parallel to the plate surface of the plate (108), and the second welding portion (812) and the fourth welding portion (912) are in contact and welded.

8. The heat exchanger (100) according to claim 6, characterized in that: The first welding portion (811) is arranged parallel to the plate surface of the first plate (8), the second welding portion (812) is arranged obliquely toward the second plate (9) on the adjacent side relative to the plate surface of the plate piece (108), and the second welding portion (812) is welded and sealed with the second welding portion (812) of the other first plate (8) on the adjacent side; Alternatively, the first welding portion (811) is arranged parallel to the plate surface of the first plate (8), the second welding portion (812) is arranged obliquely relative to the plate surface of the plate piece (108) toward the second plate (9) on the adjacent side, the third welding portion (911) is arranged parallel to the plate surface of the plate piece (108), the fourth welding portion (912) is arranged obliquely relative to the plate surface of the second plate (9) toward the first plate (8) on the adjacent side, the inclination directions of the second welding portion (812) and the fourth welding portion (912) are consistent, and the second welding portion (812) is welded and sealed with the fourth welding portion (912) on the adjacent side.

9. The heat exchanger (100) according to claim 7 or 8, characterized in that: The body (3) of the plate (108) includes a base portion (34), the first plate (8) includes a first sealing portion (813), one end of the first sealing portion (813) is connected to the base portion (34) of the first plate (8), the other end of the first sealing portion (813) is connected to the first welding portion (811), the first sealing portion (813) protrudes relative to the plate surface of the first plate (8) toward the second plate (9) on the adjacent side, the second plate (9) includes a second sealing portion (913), one end of the second sealing portion (913) is connected to the second welding portion (811), The second sealing portion (913) is connected to the base portion (34) of the plate (9), the other end of the second sealing portion (913) is connected to the third welding portion (911), the second sealing portion (913) protrudes relative to the plate surface of the second plate (9) toward the first plate (8) on the other adjacent side, the protrusion directions of the first sealing portion (813) and the second sealing portion (913) are opposite, the first sealing portion (813) and the second sealing portion (913) are relatively protruded, and the second sealing portion (913) and the first sealing portion (813) of the first plate (8) on the adjacent side are welded and sealed.

10. The heat exchanger (100) according to claim 2 or 9, characterized in that: The heat exchanger (100) further comprises a first flow channel (107), and the heat exchanger (100) further comprises a baffle (1007), wherein the baffle (1007) is located in the first flow channel (107), the baffle (1007) and the plate (108) are integrally structured or welded and fixed and sealed, and the baffle (1007) separates the first flow channel (107) into the second channel (102) and the seventh channel (1071), the second channel (102) is located below the seventh channel (1071), and the second channel (102) and the seventh channel (1071) are not connected.

11. The heat exchanger (100) according to claim 10, characterized in that: The heat exchanger (100) further comprises a fifth hole (105), the fifth hole (105) comprising a fifth pipe segment (1051) and a sixth pipe segment (1052), along the height direction of the heat exchanger (100), the fifth pipe segment (1051) and the sixth pipe segment (1052) are located on both sides of the heat exchanger (100), the fifth pipe segment (1051) and the sixth pipe segment (1052) are connected, at the fifth pipe segment (1051), the second inter-plate channel (s2) is opened, and the first inter-plate channel (s3) is opened. The channel (s1) is not open, the fifth pipe segment (1051) is connected to the second inter-plate channel (s2) at the fifth pipe segment (1051), the fifth pipe segment (1051) is not connected to the first inter-plate channel (s1) at the fifth pipe segment (1051), at the sixth pipe segment (1052), the second inter-plate channel (s2) and the first inter-plate channel (s1) are both not open, and the sixth pipe segment (1052) is not connected to the second inter-plate channel (s2) and the first inter-plate channel (s1).

12. The heat exchanger (100) according to claim 11, characterized in that: The heat exchanger (100) further comprises a fourth hole (104) and a seventh pipe segment (1061), wherein the seventh pipe segment (1061) is located on one side of the heat exchanger (100), the fourth hole (104) is arranged close to the first end (10), the fifth hole (105) and the seventh pipe segment (1061) are arranged close to the second end (30), at the fourth hole (104) and the seventh pipe segment (1061), the first inter-plate channel (s1) is not open, the fourth hole (104) and the seventh pipe segment (1061) are not connected to the first inter-plate channel (s1), at the fourth hole (104) and the seventh pipe segment (1061), the second inter-plate channel (s2) is open, and the heat exchanger (100) further comprises a partition plate (1003), wherein the partition plate (1003) is arranged close to the fourth hole (104) and the seventh pipe segment (1061). The fourth channel (104) is provided with a partition plate (1003) which divides the fourth channel (104) into a third pipe segment (1041) and a fourth pipe segment (1042); the third pipe segment (1041) and the fourth pipe segment (1042) are located on both sides of the heat exchanger (100); along the height direction of the heat exchanger (100), the third pipe segment (1041) and the fourth pipe segment (1042) are not connected; the third pipe segment (1041) is connected to the fifth pipe segment (1051) through the second inter-plate channel (s2) on the side where the third pipe segment (1041) is located; the second fluid flows out of the heat exchanger (100) through the sixth pipe segment (1052); and the seventh pipe segment (1061) is connected to the fourth pipe segment (1042) through the second inter-plate channel (s2) on the side where the seventh pipe segment (1061) is located.

13. The heat exchanger (100) according to claim 12, characterized in that: The heat exchanger (100) further comprises a sixth hole channel (106), the heat exchanger (100) comprises a diverter plate (1004), the diverter plate (1004) is located in the sixth hole channel (106), the diverter plate (1004) and the plate (108) are an integral structure, or the diverter plate (1004) and the plate (108) are welded, fixed and sealed, the diverter plate (1004) divides the sixth hole channel (106) into the seventh pipe segment (1061) and the eighth pipe segment (1062), at least part of the seventh pipe segment (1061) is located in the second sub-portion (50), and along the height direction of the heat exchanger (100), the seventh pipe segment (1061) and the eighth pipe segment (1062) are not connected.

14. The heat exchanger (100) according to claim 13, characterized in that: The height ratio of the first pipe section (1011) to the second pipe section (1012) is 1:1, and / or the height ratio of the second hole (102) to the first hole (101) is 1:

2.

15. The heat exchanger (100) according to claim 14, characterized in that: The height ratio of the third pipe segment (1041) to the fourth pipe segment (1042) is 2:1, and / or the height ratio of the fifth pipe segment (1051) to the sixth pipe segment (1052) is 2:1, and / or the height ratio of the seventh pipe segment (1061) to the fifth channel (105) is 1:2.

Images