Anti-leakage multi-channel flat pipe assembly

Abstract

The utility model discloses an anti-leakage multi-channel flat pipe assembly which comprises a pipe body component, two flow collecting connector components and two bearing sealing sleeves, each bearing sealing sleeve comprises a bearing sealing piece, and a bearing sealing channel is formed by the bearing sealing pieces. The two flow collecting connector components are inserted into the bearing closed channels from one ends of the bearing closed channels of the two bearing closed pieces correspondingly, and the two ends of the pipe body component are inserted into the bearing closed channels from the other ends of the bearing closed channels of the two bearing closed pieces correspondingly. The two ends of the two flow collecting connector components and the two ends of the pipe body component are welded to the inner wall of the bearing closed channel so that the two flow collecting connector components can be connected to the two ends of the pipe body component through the two bearing sealing sleeves, and meanwhile the sealing performance of connection between the flow collecting connector components and the pipe body component is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to multi -pass flat pipe technical field especially relates to prevent seepage multi -pass flat pipe assembly. BACKGROUND

[0002] Multiple flat tubes are connected in parallel through joints and are arranged in a heat exchanger, when the heated cooling liquid enters the multiple flat tubes through the joints, the cooling liquid will transfer heat to the outside of the flat tubes through contact with the tube wall to reduce the temperature of the cooling liquid flowing through the flat tubes.

[0003] Because the flat tube wall is thin, when the joint is welded to the end of the flat tube under the action of high temperature, the flat tube will shrink under the action of high temperature, causing pores to appear at the joint between the flat tube and the joint, and thus causing the cooling liquid to leak, therefore, in the prior art, the connection between the flat tube and the joint is achieved by applying glue to the end of the flat tube, at this time, the glue between the flat tube and the joint will dissolve due to long-term contact with the cooling liquid during long-term use of the connected joint, and thus the cooling liquid will leak from the small pores caused by the melting of the glue at the joint between the flat tube and the joint. SUMMARY

[0004] To solve the above technical problems and achieve at least one advantage of the utility model, the utility model provides a kind of prevent seepage multi -pass flat pipe assembly, wherein the prevent seepage multi -pass flat pipe assembly includes:

[0005] Pipe body component, the pipe body component includes flat tube main body, and the flat tube main body forms flat tube passage along extension direction;

[0006] Two current collecting joint components, the current collecting joint component includes liquid collecting portion and pipe connecting portion, the liquid collecting portion is connected to the pipe connecting portion, the liquid collecting portion forms liquid collecting space and flow guide passage, one end of the flow guide passage is communicated with the liquid collecting space, the pipe connecting portion forms connection space, and the connection space is communicated with the other end of the flow guide passage;And

[0007] Two receiving sleeves, the receiving sleeve includes receiving closure, the receiving closure forms receiving closure passage, the pipe connecting portion of two current collecting joint components is inserted into the receiving closure passage from one end of the receiving closure passage of the receiving closure of two receiving sleeves respectively, and the pipe connecting portion of two current collecting joint components is welded to the inner wall of the receiving closure passage of two receiving closures respectively, two ends of the flat tube main body are inserted into the receiving closure passage from the other end of the receiving closure passage of the receiving closure of two receiving sleeves respectively, and two ends of the flat tube main body are welded to the inner wall of the receiving closure passage of two receiving closures respectively, so as to connect two current collecting joint components to two ends of the pipe body component by two receiving sleeves.

[0008] According to an embodiment of the present application, the pipe body component further comprises at least two flow dividing members, the two flow dividing members are arranged in the flat tube channel in a manner consistent with the extension direction of the flat tube body, so as to divide the flat tube channel into two connection channels and a flow transfer channel by the two flow dividing members, the two connection channels are formed on both sides in the extension direction of the flat tube body, and the flow transfer channel is formed between adjacent flow dividing members.

[0009] According to an embodiment of the present application, different end portions of the two flow dividing members in the extension direction form first sealing portions, the first sealing portions of the two flow dividing members are respectively located at both ends of the flat tube body, the flow collecting connector component further comprises second sealing portions, the second sealing portions are fixed to the pipe connecting portions, the second sealing portions are located in the connection space, so as to divide the connection space of the two pipe connecting portions into a flow dividing space and a flow transfer space by the two second sealing portions respectively, the flow dividing space communicates with the liquid collecting space through the flow guide channel, and the second sealing portions of the two flow collecting connector components respectively abut against the first sealing portions of the two flow dividing members in the extension direction of the flat tube body.

[0010] According to an embodiment of the present application, the pipe body component further comprises a plurality of partition members, the plurality of partition members are fixed to the flat tube body in a manner consistent with the extension direction of the flow dividing members, and the plurality of partition members are respectively arranged in the two connection channels and the flow transfer channel.

[0011] According to an embodiment of the present application, the receiving sleeve further comprises a closed flow limiting member, the closed flow limiting member is fixed to the receiving closing member and located in the inner wall of the receiving closing channel, so as to divide the receiving closing channel, the closed flow limiting member is provided with at least three openings, two of the openings respectively correspond to the channel ports of the two connection channels after being divided by the partition members, and two of the openings respectively communicate with the flow dividing space of one of the pipe connecting portions and the flow transfer space of one of the pipe connecting portions, the other opening corresponds to the channel port of the flow transfer channel after being divided by the partition members, and the other opening communicates with the flow transfer space of one of the pipe connecting portions.

[0012] According to an embodiment of the present application, the closed flow limiting members of the two receiving sleeves are provided with a plurality of stabilizing teeth, the closed flow limiting members of the two receiving sleeves extend into the channels after being divided by the partition members in the connection channels and the flow transfer channel to form a plurality of stabilizing teeth, and the stabilizing teeth respectively adhere to the inner walls of the channels after being divided by the partition members in the connection channels and the flow transfer channel.

[0013] According to an embodiment of the present application, the pipe connecting part of the two current collector connector members forms an abutting step, and the pipe connecting part of the two current collector connector members respectively extends along a direction perpendicular to the extension direction of the flat tube body to form the abutting step.

[0014] According to an embodiment of the present application, the current collector connector member further comprises a plurality of connector support ribs, the plurality of connector support ribs are arranged on the pipe connecting part, and the plurality of connector support ribs are arranged on the inner walls of the flow dividing space and the flow transferring space.

[0015] According to an embodiment of the present application, the width of the second abutting and sealing part in the extension direction of the flat tube body is greater than the width of the first abutting and sealing part of the flow dividing member in the extension direction of the flat tube body.

[0016] According to an embodiment of the present application, the receiving and sealing member and the sealing and flow limiting member are integrally formed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A perspective view of a preferred embodiment of the present application is shown.

[0018] Figure 2 A cross-sectional view of a preferred embodiment of the present application is shown.

[0019] Figure 3 An enlarged view of the middle A is shown. Figure 2 An enlarged view of the middle B is shown.

[0020] Figure 4 An exploded view of a preferred embodiment of the present application is shown.

[0021] Figure 5 A perspective view of the receiving and sealing member of a preferred embodiment of the present application is shown. Figure 4 DETAILED DESCRIPTION

[0022] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments in the following description are only examples of the present application and the other obvious variants can be thought of by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, variants, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application. Figure 6 The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments in the following description are only examples of the present application and the other obvious variants can be thought of by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, variants, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0023] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments in the following description are only examples of the present application and the other obvious variants can be thought of by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, variants, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0024] Those skilled in the art should understand that in the disclosure of the utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the utility model.

[0025] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0026] Reference Figures 1 to 6 The anti-leakage multi-channel flat tube assembly according to a preferred embodiment of the utility model will be described in detail below, wherein the anti-leakage multi-channel flat tube assembly comprises a tube member 10, two collecting joint members 20 and two receiving sleeves 30.

[0027] Specifically, the tube member 10 comprises a flat tube body 11. The flat tube body 11 forms a flat tube channel along the extension direction.

[0028] The collecting joint member 20 comprises a liquid collecting part 21 and a pipe connecting part 22, and the liquid collecting part 21 is connected to the pipe connecting part 22. The liquid collecting part 21 forms a liquid collecting space 2101 and a flow guiding channel 2102, one end of the flow guiding channel 2102 communicates with the liquid collecting space 2101. The pipe connecting part 22 forms a connecting space, and the connecting space communicates with the other end of the flow guiding channel 2102.

[0029] The receiving sleeve 30 comprises a receiving closure 31. The receiving closure 31 forms a receiving closure passage 3101. The pipe connecting portion 22 of each of the two manifold members 20 is inserted into the receiving closure passage 3101 from one end of the receiving closure passage 3101 of the receiving closure 31 of each of the two receiving sleeves 30, and the pipe connecting portion 22 of each of the two manifold members 20 is welded to the inner wall of the receiving closure passage 3101 of the receiving closure 31. The two ends of the flat tube body 11 are inserted into the receiving closure passage 3101 from the other end of the receiving closure passage 3101 of the receiving closure 31 of each of the two receiving sleeves 30, and the two ends of the flat tube body 11 are welded to the inner wall of the receiving closure passage 3101 of the receiving closure 31, so that the two manifold members 20 are connected to the two ends of the tube body member 10 through the two receiving sleeves 30.

[0030] That is, the two receiving sleeves 30 are arranged in a surrounding manner between the two ends of the flat tube body 11 and the two pipe connecting portions 22, so as to reinforce the connection between the pipe connecting portion 22 and the flat tube body 11. Since the two receiving sleeves 30 are arranged around the outer periphery of the two ends of the flat tube body 11 and the pipe connecting portion 22, the receiving sleeve 30 not only serves as a bridge for receiving the connection between the flat tube body 11 and the pipe connecting portion 22, but also improves the sealing performance of the connection between the pipe connecting portion 22 and the flat tube body 11.

[0031] Thus, the connection space formed by the pipe connecting portion 22 of each of the two manifold members 20 can communicate with the two ends of the flat tube passage of the flat tube body 11, so that the cooling liquid can flow from the liquid collecting space 2101 of the liquid collecting portion 21 of one of the two manifold members 20 to the flat tube passage through the flow guide passage 2102 and the connection space of the pipe connecting portion 22, and then flow through the connection space of the pipe connecting portion 22 of the other of the two manifold members 20 and the flow guide passage 2102 of the liquid collecting portion 21 to the liquid collecting space 2101 in sequence. After the cooling liquid flows into the flat tube passage, the cooling liquid contacts the inner wall of the flat tube passage, and heat is transferred from the inner wall of the flat tube passage to the outside of the flat tube body 11 through heat conduction, so as to reduce the temperature of the cooling liquid.

[0032] Preferably, the connection space is formed at the end of the pipe connecting portion 22 away from the liquid collecting portion 21.

[0033] As an example, after the flat tube body 11 end is inserted into the receiving closed passage 3101, the receiving closed piece 31 is heated to weld the outer periphery of the flat tube body 11 to the inner wall of the receiving closed passage 3101. Since the outer periphery of the flat tube body 11 is welded to the inner wall of the receiving closed passage 3101, the tube connecting portion 22 of the current collector member 20 is inserted into the receiving closed passage 3101, and the outer periphery of the tube connecting portion 22 is welded to the inner wall of the receiving closed passage 3101 by heating the receiving closed piece 31. The outer periphery of the flat tube body 11 end is prevented from shrinking due to the pulling of the inner wall of the receiving closed passage 3101, thereby stabilizing the formation of the flat tube passage and preventing the formation of gaps between the flat tube body 11 and the inner wall of the receiving closed passage 3101.

[0034] Preferably, the tube body member 10 further comprises at least two flow dividing pieces 12. The two flow dividing pieces 12 are arranged on the inner wall of the flat tube passage in the same direction as the extension direction of the flat tube body 11, so as to divide the flat tube passage into two connection passages 1101 and a flow transfer passage 1102 by the two flow dividing pieces 12. The two connection passages 1101 are formed on both sides in the extension direction of the flat tube body 11, and the flow transfer passage 1102 is formed between the adjacent flow dividing pieces 12.

[0035] It is worth mentioning that the flat tube body 11 can be improved in strength by the flow dividing pieces 12, so as to reduce the probability of the flat tube body 11 being broken by bending under stress. Meanwhile, after the cooling liquid enters the connection passages 1101 and the flow transfer passage 1102, the heat of the cooling liquid is indirectly transferred to the flat tube body 11 by the contact with the flow dividing pieces 12, thereby improving the heat transfer efficiency of the cooling liquid.

[0036] Meanwhile, when the flat tube body 11 tends to shrink due to heating, the inner wall of the flat tube passage formed by the flat tube body 11 is supported by the flow dividing pieces 12, so as to limit the shrinkage of the flat tube body 11, thereby improving the stability of the flat tube body 11 in forming the flat tube passage, and ensuring the stable formation of the connection passages 1101 and the flow transfer passage 1102.

[0037] As preferred, two of said flow distributors 12 each have a first abutting portion 121 at different ends in the extending direction. Two of said first abutting portions 121 of said flow distributors 12 are respectively located at two ends of said flat tube body 11. Said manifold member 20 further comprises a second abutting portion 23, which is fixed to said pipe portion 22. Said second abutting portion 23 is located in said connecting space, so as to divide said connecting space into a flow distribution space 2201 and a flow transfer space 2202 by two of said second abutting portions 23 respectively. Said flow distribution space 2201 is in communication with said collecting space 2101 through said flow guide passage 2102. When two of said pipe portions 22 are respectively inserted into one end of said receiving and closing passage 3101 of two of said receiving and closing members 31, and two ends of said flat tube body 11 are respectively inserted into the other end of said receiving and closing passage 3101 of two of said receiving and closing members 31, said second abutting portion 23 of two of said manifold members 20 abuts against said first abutting portion 121 of two of said flow distributors 12 respectively.

[0038] As understood by those skilled in the art, when said second abutting portion 23 of two of said manifold members 20 abuts against said first abutting portion 121 of two of said flow distributors 12 respectively, said flow distribution space 2201 of said pipe portion 22 of one of said manifold members 20 will be in communication with said flow transfer space 2202 of said pipe portion 22 of the other of said manifold members 20 through said connecting passage 1101, and two ends of said flow transfer passage 1102 are in communication with two of said flow transfer spaces 2202 and one end of two of said connecting passages 1101 away from said flow distribution space 2201 respectively.

[0039] At this time, the cooling liquid in said collecting space 2101 of said collecting portion 21 of one of said manifold members 20 will flow through said flow guide passage 2102 of said collecting portion 21 of one of said manifold members 20 and said flow distribution space 2201 in communication therewith in sequence, and after flowing into one of said connecting passages 1101, it will flow into said flow transfer passage 1102 from one end of said flow transfer passage 1102 through the guidance of said flow transfer space 2202 of said pipe portion 22 of the other of said manifold members 20, and then flow into the other of said connecting passages 1101 after flowing into said flow transfer space 2202 of said pipe portion 22 of the opposite one of said manifold members 20 from the other end of said flow transfer passage 1102, and then flow into said flow distribution space 2201 of the other of said manifold members 20 and said flow guide passage 2102 in communication therewith in sequence, and finally flow into said collecting space 2101 in communication therewith.

[0040] It is worth mentioning that, compared with the way of directly passing the cooling liquid from one end of the flat tube body 11 to the other end, the above-mentioned cooling liquid flow mode can increase the distance of the cooling liquid flowing in the flat tube body 11, thereby increasing the time of the cooling liquid contacting the inner wall of the connecting channel 1101 and the inner wall of the flow conversion channel 1102, improving the total amount of heat transferred to the outside of the flat tube body 11 by heat transfer when the cooling liquid flows in the same space inside the flat tube body 11, and at the same time, due to the decrease of the cross-sectional size of the flow path when the cooling liquid flows in the connecting channel 1101 and the flow conversion channel 1102, the total amount of cooling liquid can be reduced.

[0041] Preferably, the pipe body member 10 further comprises a plurality of partition pieces 13. The plurality of partition pieces 13 are fixed to the flat tube body 11 in the same direction as the flow dividing piece 12, and the plurality of partition pieces 13 are respectively arranged in the two connecting channels 1101 and the flow conversion channel 1102, so as to separate the space of the connecting channel 1101 and the flow conversion channel 1102 by the partition piece 13, and reinforce the connecting channel 1101 and the flow conversion channel 1102 by the partition piece 13.

[0042] It is worth mentioning that, after the cooling liquid enters the connecting channel 1101 and the flow conversion channel 1102 and contacts the surface of the partition piece 13, the cooling liquid can indirectly transfer heat to the flat tube body 11 by contacting the partition piece 13, thereby improving the cooling efficiency of the cooling liquid in the connecting channel 1101 and the flow conversion channel 1102.

[0043] Preferably, the receiving sleeve 30 further comprises a closed flow limiting piece 32. The closed flow limiting piece 32 is fixed to the receiving closing piece 31 and located in the inner wall of the receiving closing channel 3101, so as to separate the receiving closing channel 3101. The closed flow limiting piece 32 is provided with at least three openings 3201. Two of the openings 3201 respectively correspond to the channel ports of the two connecting channels 1101 separated by the partition piece 13, and respectively communicate with the flow dividing space 2201 and the flow conversion space 2202 of one of the pipe connecting portions 22. The other opening 3201 corresponds to the channel port of the flow conversion channel 1102 separated by the partition piece 13, and the other opening 3201 communicates with the flow conversion space 2202 of one of the pipe connecting portions 22.

[0044] Therefore, the total amount of cooling liquid flowing into the two connection channels 1101 and the flow conversion channel 1102 can be controlled, and since the total path distance of the cooling liquid flowing in the two connection channels 1101, the flow conversion channel 1102, the flow distribution space 2201 and the flow conversion space 2202 is unchanged, the total amount of cooling liquid required to be introduced into the anti-leakage multi-channel flat tube assembly can be controlled to adapt to different use requirements of customers.

[0045] That is, the pipe connecting portions 22 of the two manifold members 20 are respectively inserted into the receiving closed channels 3101 of the receiving closed members 31 of the two receiving sleeves 30 from one end of the receiving closed channels 3101, and after the two ends of the tube body member 10 are respectively inserted into the receiving closed channels 3101 of the receiving closed members 31 of the two receiving sleeves 30 from the other end of the receiving closed channels 3101, the second sealing portions 23 are sealed against the first sealing portions 121 by the closed flow limiting members 32. Compared with the first sealing portions 121 directly abutting against the second sealing portions 23, the arrangement of the closed flow limiting members 32 can reduce the probability of cooling liquid flowing between the first sealing portions 121 and the second sealing portions 23, so as to ensure the normal flow of the cooling liquid.

[0046] As an example, the two end portions of the flat tube body 11 are implemented as rough surfaces at the positions where the two end portions contact the inner walls of the receiving closed channels 3101, so that when the receiving closed members 31 are heated to weld the outer periphery of the flat tube body 11 to the inner walls of the receiving closed channels 3101, the connection between the inner walls of the receiving closed channels 3101 and the outer periphery of the flat tube body 11 is more secure, so as to prevent the end portions of the flat tube body 11 from shrinking due to heat.

[0047] Preferably, the receiving closed members 31 and the closed flow limiting members 32 are integrally formed.

[0048] Preferably, the closed flow limiting members 32 of the two receiving sleeves 30 each have a plurality of stabilizing teeth 321. The closed flow limiting members 32 of the two receiving sleeves 30 extend into the channels of the connection channels 1101 and the flow conversion channel 1102 separated by the partition member 13 to form the plurality of stabilizing teeth 321. The plurality of stabilizing teeth 321 respectively abut the inner walls of the channels of the connection channels 1101 and the flow conversion channel 1102 separated by the partition member 13, so as to support the channels of the connection channels 1101 and the flow conversion channel 1102 separated by the partition member 13 by the plurality of stabilizing teeth 321, thereby preventing the end portions of the flat tube body 11 from shrinking due to heat when the flat tube body 11 is welded to the inner walls of the receiving closed channels 3101, so as to prevent the connection channels 1101 and the flow conversion channel 1102 from being closed.

[0049] Preferably, the pipe-connection portion 22 of each of the two current collector members 20 forms a contact step 221. The pipe-connection portion 22 of each of the two current collector members 20 extends circumferentially along a direction perpendicular to the extension direction of the flat tube body 11 to form the contact step 221. When the pipe-connection portion 22 is inserted into the receiving closed passage 3101, the contact step 221 abuts against the receiving closure 31 to limit the insertion depth of the pipe-connection portion 22 into the receiving closed passage 3101, thereby preventing the pipe-connection portion 22 from damaging the closure flow-restricting member 32 and preventing the flat tube body 11 from being blocked from being inserted into the receiving closed passage 3101 due to the reduced space for the flat tube body 11 to be inserted into the receiving closed passage 3101 caused by the excessive insertion of the pipe-connection portion 22 into the receiving closed passage 3101.

[0050] For example, during heating of the receiving closure 31, the pipe-connection portion 22 and the end portion of the flat tube body 11 are welded to the inner wall of the receiving closed passage 3101, the pipe-connection portion 22 and the flat tube body 11 are welded to the closure flow-restricting member 32, the contact step 221 is welded to the receiving closure 31, and the second contact-and-seal portion 23, the first contact-and-seal portion 121, and the portion of the closure flow-restricting member 32 between the second contact-and-seal portion 23 and the first contact-and-seal portion 121 are welded together to prevent leakage of the coolant.

[0051] It can be understood that, in order to strengthen the welding strength between the second contact-and-seal portion 23, the first contact-and-seal portion 121, and the portion of the closure flow-restricting member 32 between the second contact-and-seal portion 23 and the first contact-and-seal portion 121, the current collector member 20 and the tube body member 10 are pushed towards each other as a whole when the receiving closure 31 is heated, and the welding strength between the receiving closure 31 and the contact step 221 is strengthened during the pushing process.

[0052] Preferably, the current collector member 20 further comprises a plurality of joint support ribs 24. The plurality of joint support ribs 24 are arranged on the pipe-connection portion 22, and the plurality of joint support ribs 24 are arranged on the inner walls of the flow distribution space 2201 and the flow transfer space 2202, respectively, to reinforce the pipe-connection portion 22 by the joint support ribs 24, thereby preventing the pipe-connection portion 22 from being closed due to thermal contraction when the pipe-connection portion 22 is welded to the inner wall of the receiving closed passage 3101.

[0053] Preferably, the tube body member 10, the current collector member 20, and the receiving sleeve 30 are made of resin.

[0054] Preferably, the width of the second sealing portion 23 in the extension direction of the flat tube body 11 is greater than the width of the first sealing portion 121 of the flow divider 12 in the extension direction of the flat tube body 11, so as to prevent the second sealing portion 23 of the collecting joint member 20 from being unable to abut against the first sealing portion 121 by the closing flow limiter 32 due to offset errors during manufacturing.

[0055] Those skilled in the art will understand that the embodiments of the present application shown in the above description and the accompanying drawings are only examples and do not limit the present application. The advantages of the present application have been fully and effectively realized. The functions and structural principles of the present application have been shown and described in the embodiments, and the embodiments of the present application can be any deformation or modification without departing from the principles.

Claims

1. A leak-tight multi-channel flat tube assembly, characterized by, The anti-leakage multi-channel flat tube assembly comprises: a tube body member comprising a flat tube body forming a flat tube channel along an extension direction; two header members comprising a header and a connecting pipe, the header being connected to the connecting pipe, the header forming a header space and a flow guide channel, one end of the flow guide channel being in communication with the header space, the connecting pipe forming a connecting space in communication with the other end of the flow guide channel; and two receiving sleeves comprising a receiving closure forming a receiving closure channel, the connecting pipes of the two header members being respectively inserted into the receiving closure channels of the receiving closures of the two receiving sleeves from one end of the receiving closure channels of the receiving closures of the two receiving sleeves, and the connecting pipes of the two header members being respectively welded to the inner walls of the receiving closure channels of the two receiving closures, and the two ends of the flat tube body being respectively inserted into the receiving closure channels of the receiving closures of the two receiving sleeves from the other end of the receiving closure channels of the receiving closures of the two receiving sleeves, and the two ends of the flat tube body being respectively welded to the inner walls of the receiving closure channels of the two receiving closures, so as to connect the two header members to the two ends of the tube body member through the two receiving sleeves.

2. The leak-tight multi-channel flat tube assembly according to claim 1, wherein The tube body member further comprises at least two flow dividing members, the two flow dividing members being arranged in the flat tube channel in a manner consistent with the extension direction of the flat tube body, so as to divide the flat tube channel into two connecting channels and a flow transfer channel through the two flow dividing members, the two connecting channels being formed on both sides in the extension direction of the flat tube body, and the flow transfer channel being formed between adjacent flow dividing members.

3. The leak-tight multi-channel flat tube assembly according to claim 2, wherein The different ends of the two flow dividing members in the extension direction form first sealing portions, the first sealing portions of the two flow dividing members being respectively located at the two ends of the flat tube body, the header member further comprising second sealing portions fixed to the connecting pipes, the second sealing portions being located in the connecting spaces, so as to divide the connecting spaces of the two connecting pipes into flow dividing spaces and flow transfer spaces through the two second sealing portions, the flow dividing spaces being in communication with the header space through the flow guide channels, and the second sealing portions of the two header members being respectively in abutment with the first sealing portions of the two flow dividing members in the extension direction of the flat tube body.

4. The leak-tight multi-channel flat tube assembly according to claim 3, wherein The tube body member further comprises a plurality of partition members fixed to the flat tube body in a manner consistent with the extension direction of the flow dividing members, and the plurality of partition members being respectively arranged in the two connecting channels and the flow transfer channel.

5. The leak-tight multi-channel flat tube assembly according to claim 4, wherein The receiving sleeve further comprises a closed flow limiting member fixed to the receiving closure and located in the inner wall of the receiving closure channel to divide the receiving closure channel, the closed flow limiting member is provided with at least three openings, two of which correspond to the channel ports of the two connection channels divided by the partition, and two of which respectively communicate with the flow diversion space of one of the pipe connection parts and the flow transfer space of one of the pipe connection parts, the other opening corresponds to the channel port of the flow transfer channel divided by the partition, and the other opening communicates with the flow transfer space of one of the pipe connection parts.

6. The leak-tight multi-channel flat tube assembly according to claim 5, wherein The closed flow limiting members of the two receiving sleeves are provided with a plurality of stabilizing teeth, and the closed flow limiting members of the two receiving sleeves extend into the connection channels and the flow transfer channels divided by the partition to form a plurality of stabilizing teeth, which respectively fit the inner walls of the connection channels and the flow transfer channels divided by the partition.

7. The leak-tight multi-channel flat tube assembly according to claim 6, wherein The pipe connection parts of the two manifold members respectively form abutting steps, and the pipe connection parts of the two manifold members respectively extend in the circumferential direction perpendicular to the extension direction of the flat tube body to form the abutting steps.

8. The leak resistant multi-lumen flat tube assembly of claim 7, wherein, The manifold member further comprises a plurality of joint support ribs, and the plurality of joint support ribs are arranged on the pipe connection parts and respectively arranged on the inner walls of the flow diversion space and the flow transfer space.

9. The leak-tight multi-channel flat tube assembly according to claim 8, wherein The width of the second sealing part in the extension direction of the flat tube body is greater than the width of the first sealing part of the flow diversion member in the extension direction of the flat tube body.

10. The leak-tight multi-channel flat tube assembly according to any one of claims 5 to 9, characterized in that The receiving closure and the closed flow limiting member are integrally formed.

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