Multi-channel flat tube

Abstract

The utility model discloses a multi-channel flat pipe which comprises a connector, a connecting piece and a flat pipe, the whole connecting piece can be inserted into the connector, one end of the flat pipe can be inserted into the connector, the connecting piece is provided with an embedded part, the embedded part can be embedded into the end, inserted into the connector, of the flat pipe, and the flat pipe can be inserted into the connector through the embedded part. Due to the fact that the connector is arranged on the flat pipe, when the connector is fixedly connected with the flat pipe, the pipeline of the flat pipe cannot be concaved inwards, meanwhile, the connector is provided with a welding part, and the inner wall of the welding part is close to the outer wall of the end portion of the flat pipe inserted into the connector. And the welding part and the outer wall of the end part of the flat pipe can be welded together through laser, so that the joint and the flat pipe are fixed and sealed together.

Description

Technical Field

[0001] The utility model relates to a fluid conveying device, in particular to a multi-channel flat tube. Background Art

[0002] Multi-channel flat tubes are a type of fluid transport pipeline used to transport coolant in battery packs, and can also be used in thermal management solutions for energy storage systems.

[0003] In the prior art, multi-channel flat tubes are often made of aluminum materials, which has high production costs, and the produced multi-channel flat tubes are very heavy, which is inconvenient in terms of transportation and connection. Moreover, the flat tube part of the multi-channel flat tube is prone to inward concavity due to the change of internal and external pressures or high temperature deformation, so that the fluid flow inside the multi-channel flat tube will be hindered.

[0004] In addition, the multi-channel flat tube made of aluminum material will use metal welding in structure, and metal welding has defects such as loose welding. Therefore, loose metal welding can easily cause gaps, causing the transported fluid to leak from the gaps and cause losses. Utility Model Content

[0005] One advantage of the present invention is that it provides a multi-channel flat tube, which includes a joint, a connecting piece and a flat tube, wherein the joint includes a joint, and the connecting piece can be inserted into the joint as a whole. When one end of the flat tube is inserted into the joint, the connecting piece can be embedded in the flat tube so that no concave will be generated after the flat tube and the joint are fixedly connected by laser welding.

[0006] One advantage of the utility model is that it provides a multi-channel flat tube, wherein the joints and the flat tubes of the multi-channel flat tube are produced by using resin materials, which can reduce costs and reduce weight. At the same time, the multi-channel flat tube does not use metal welding and will not produce defects such as incomplete welding or weld nodules.

[0007] One advantage of the utility model is that it provides a multi-channel flat tube, which is glued on the basis of laser welding, thereby enhancing the sealing performance of the multi-channel flat tube and reducing the risk of fluid leakage.

[0008] One advantage of the utility model is that it provides a multi-channel flat tube, which is coated with rubber by injection molding, so that the connection between the joint and the flat tube is completely fixed and sealed, reducing the appearance requirements of the connector and the joint.

[0009] In order to achieve at least one of the above advantages of the present invention, the present invention provides a multi-channel flat tube, the multi-channel flat tube comprising:

[0010] A joint, the joint having a flow channel, at least one channel opening and an insertion opening, wherein the channel opening and the insertion opening are both connected to the flow channel, and the joint further having a welding portion, the welding portion being located at an end of the joint relatively close to the insertion opening;

[0011] a flat tube, the flat tube having a pipeline and two connecting pipe openings, the connecting pipe openings being in communication with the pipeline, one end of the flat tube being insertable into the flow channel, the inner wall of the welding portion being close to the outer wall of the end of the flat tube inserted into the flow channel, so that the welding portion and the outer wall of the end of the flat tube can be welded together by laser;

[0012] A connector having a connecting channel and an embedding portion, wherein the connector as a whole can be inserted from the insertion port into the circulation channel of the joint, and the size of the embedding portion is smaller than the size of the connecting pipe port, so that when the flat tube is inserted into the circulation channel, the embedding portion can be embedded in the pipe of the flat tube, thereby allowing the circulation channel to be connected to the pipe through the connecting channel.

[0013] According to an embodiment of the present invention, the joint and the flat tube are made of resin material.

[0014] According to an embodiment of the utility model, the flat tube includes a plurality of inclined plates, and the inclined plates are arranged obliquely at intervals inside the flat tube to divide the pipeline of the flat tube into a plurality of identical small pipelines.

[0015] According to one embodiment of the utility model, the connecting member includes a plurality of spacer plates, which are vertically arranged at intervals inside the connecting channel to divide the connecting channel into a plurality of small channels, and an inclined notch is arranged between two adjacent spacer plates, and the inclined notch corresponds to the position of the inclined plate, so that when the connecting member is embedded in the flat tube, the inclined plate can be inserted into the inclined notch.

[0016] According to an embodiment of the utility model, the joint further has an adhesive portion, which is formed by expanding and extending the end portion of the joint that forms the insertion port, and the shape of the adhesive portion is the same as the shape of the welding portion, and the distance between the upper and lower walls of the adhesive portion is larger than the distance between the upper and lower walls of the welding portion, so that when the flat tube is inserted into the circulation channel, the inner wall of the adhesive portion and the outer wall of the flat tube form a predetermined gap, and the predetermined gap is used to spray in the colloid.

[0017] According to one embodiment of the utility model, the connecting piece is partially inserted into the flow channel of the joint, and the embedded portion is embedded in the pipe of the flat tube. The portion where the joint and the connecting piece are connected is injection molded and coated with glue, thereby forming an injection molded part with fixing and sealing functions.

[0018] According to one embodiment of the utility model, a portion of the connector close to the insertion port forms a plurality of outer wall protrusions, and an outer wall surface of the connector is provided with a plurality of side wall protrusions, so that the injection molded part forms a plurality of fixing holes and at least one card slot, the outer wall protrusions are stuck in the fixing holes, and the side wall protrusions can be stuck in the card slot.

[0019] According to an embodiment of the utility model, a plurality of the outer wall protrusions are evenly surrounded on the outer wall of the joint, and each of the outer wall protrusions is stuck in one of the fixing holes, and a plurality of the side wall protrusions are evenly surrounded on the outer surface of the side wall of the connecting portion of the connector.

[0020] According to an embodiment of the utility model, the connecting piece has a side wall groove, and the side wall groove is located at the front end portion of the connecting piece inserted into the insertion port.

[0021] According to an embodiment of the utility model, the outer wall of the flat tube and the inner wall of the injection molded part can be laser welded to further fix the flat tube and the injection molded part together. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional schematic diagram of the multi-channel flat tube of the utility model is shown.

[0023] Figure 2 A schematic diagram of the disassembly of the multi-channel flat tube of the utility model is shown.

[0024] Figure 3 A schematic cross-sectional view of the multi-channel flat tube of the utility model is shown.

[0025] Figure 4 A cross-sectional schematic diagram of a partial structure of the multi-channel flat tube of the utility model is shown.

[0026] Figure 5 A three-dimensional schematic diagram of an embodiment of the multi-channel flat tube of the utility model is shown.

[0027] Figure 6 A schematic diagram of the disassembly of an embodiment of the multi-channel flat tube of the utility model is shown.

[0028] Figure 7 A cross-sectional schematic diagram of an embodiment of the multi-channel flat tube of the utility model is shown.

[0029] Figure 8 A three-dimensional schematic diagram of another embodiment of the multi-channel flat tube of the utility model is shown.

[0030] Fig. 9 A schematic diagram of the disassembly of another embodiment of the multi-channel flat tube of the utility model is shown.

[0031] Fig.10 A cross-sectional schematic diagram of another embodiment of the multi-channel flat tube of the utility model is shown. DETAILED DESCRIPTION

[0032] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0033] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0034] It is to 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 an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0035] refer to Figures 1 to 4 A multi-channel flat tube according to a preferred embodiment of the present utility model will be described in detail below. The multi-channel flat tube includes a joint 10, a connecting piece 20 and a flat tube 30.

[0036] like Figure 3 As shown, the connector 10 has a flow channel 101 , at least one channel opening 102 and an insertion opening 103 , wherein the channel opening 102 and the insertion opening 103 are both in communication with the flow channel 101 .

[0037] like Figure 2 and Figure 3As shown, the flat tube 30 has a pipeline 301 and two connecting pipe openings 302 connected with the pipeline 301, and one end of the flat tube 30 can be inserted into the circulation channel 101. The joint 10 has a welding portion 11, and the welding portion 11 is located at one end of the joint 10 relatively close to the insertion opening 103. The inner wall of the welding portion 11 is close to the outer wall of the end of the flat tube 30 inserted into the circulation channel 101, so that the welding portion 11 and the outer wall of the end of the flat tube 30 are connected together by laser welding, thereby fixing the joint 10 and the flat tube 30, and at the same time blocking the gap between the joint 10 and the flat tube 30 to prevent the fluid from flowing out of the gap.

[0038] Preferably, the connector 20 has a connecting channel 201 and an embedding portion 21. The connector 20 as a whole can be inserted into the circulation channel 101 from the channel opening 102. The size of the embedding portion 21 of the connector 20 is smaller than the size of the connecting pipe opening 302, so that when the flat tube 30 is inserted into the circulation channel 101, the embedding portion 21 of the connector 20 as a whole in the circulation channel 101 can be embedded into the pipe 301 of the flat tube 30 from the connecting pipe opening 302, so that the circulation channel 101 is connected to the pipe 301 through the connecting channel 201.

[0039] It is worth mentioning that when the embedding portion 21 of the connecting member 20 is embedded in the pipe 301, the embedded inner wall of the pipe 301 is supported by the embedding portion 21, so that the end of the flat tube 30 will not be sunken inward, thereby avoiding the flat tube 30 from reducing the flow cross-sectional area due to the sunken portion.

[0040] Specifically, the size of the portion of the circulation channel 101 close to the insertion port 103 and the size of the insertion port 103 are larger than the size of the connecting piece 20, and the shape of the portion of the circulation channel 101 close to the insertion port 103 and the shape of the insertion port 103 are the same as the shape of the connecting piece 20, so that the connecting piece 20 as a whole can be inserted into part of the circulation channel 101 from the channel port 102.

[0041] The shape of the pipe 301 is the same as the shape of the portion of the circulation channel 101 close to the insertion port 103, and the size of the connecting pipe port 302 is smaller than the size of the insertion port 103 and the size of the portion of the circulation channel 101 close to the insertion port 103, so that one end of the flat tube 30 can be inserted into the circulation channel 101.

[0042] Those skilled in the art can understand that the fluid enters the circulation channel 101 through the channel opening 102 and flows to the connecting channel 201 , and then the fluid flows into the pipeline 301 through the connecting channel 201 .

[0043] Preferably, the joint 10 and the flat tube 30 of the multi-channel flat tube are made of resin material. Since the resin material is cheap and light, the production cost of the multi-channel flat tube and the weight of the multi-channel flat tube can be reduced, thereby facilitating the transportation and connection of the multi-channel flat tube.

[0044] Preferably, if Figure 2 and Figure 4 As shown, the flat tube 30 includes a plurality of inclined plates 31, and the inclined plates 31 are arranged at intervals and inclined inside the pipe 301, so as to divide the pipe 301 of the flat tube 30 into a plurality of identical small pipes, which reduces flow resistance and facilitates heat dissipation of the fluid.

[0045] Preferably, if Figure 2 and Figure 4 As shown, the connecting member 20 includes a plurality of spacer plates 22, which are vertically arranged inside the connecting channel 201 at intervals, so as to divide the connecting channel 201 into a plurality of small channels. An inclined notch 202 is arranged between two adjacent spacer plates 22, and the inclined notch 202 corresponds to the position of the inclined plate 31, so that when the connecting member 20 is embedded in the flat tube 30, the inclined plate 31 can be inserted into the inclined notch 202, thereby increasing the friction between the embedded portion 21 of the connecting member 20 and the flat tube 30, so that the connecting member 20 is not easy to fall off from the flat tube 30.

[0046] Preferably, if Figures 5 to 7 As shown, the joint 10 of the multi-channel flat tube further has a glue portion 12. The glue portion 12 is formed by the end of the joint 10 forming the insertion opening 103 being expanded and extended, and the shape of the glue portion 12 is the same as the shape of the welding portion 11. Since the glue portion 12 is formed by expansion, after the joint 10 forms the glue portion 12, the size of the insertion opening 103 becomes larger, that is, the distance between the upper and lower walls of the glue portion 12 is larger than the distance between the upper and lower walls of the welding portion 11.

[0047] Specifically, Figure 7As shown, when the flat tube 30 is inserted into the circulation channel 101, the flat tube 30 first passes through the adhesive portion 12 and then reaches the welding portion 11. Since the distance between the upper and lower walls of the adhesive portion 12 is larger than the distance between the upper and lower walls of the welding portion 11, a predetermined gap is formed between the inner wall of the adhesive portion 12 and the outer wall of the flat tube 30. The predetermined gap is used to spray colloid, thereby playing a gluing role, and further fixing the joint 10 and the flat tube 30.

[0048] It is worth mentioning that when the colloid adheres the adhesive portion 12 of the joint 10 to the outer wall of the flat tube 30 , the sealing of the connection is greatly improved, preventing the fluid from leaking through the gap of the connection.

[0049] refer to Figures 8 to 10 As a preferred embodiment, when the connecting piece 20 is partially inserted into the flow channel 101 of the joint 10 and the embedding portion 21 is embedded in the pipe 301 of the flat tube 30, the manufacturer can perform injection molding on the connected portion of the joint 10 and the connecting piece 20 to form an injection molded part 40 with fixing and sealing functions, so that the joint 10 and the flat tube 30 are fixedly and sealedly connected together.

[0050] Preferably, if Fig. 9 and Fig.10 As shown, the portion of the connector 10 near the insertion port 103 is formed with a plurality of outer wall protrusions 124, and at the same time, the outer wall surface of the connector 20 is provided with a plurality of side wall protrusions 23. Since the injection molded part 40 is formed directly by injection molding the connection, the injection molded part 40 forms a plurality of fixing holes 401 and at least one slot 402 corresponding to the outer wall protrusions 124 on the connector 10 and the side wall protrusions 23 of the connector 20. The outer wall protrusions 124 are stuck in the fixing holes 401, and the side wall protrusions 23 can be stuck in the slot 402, so that the connector 20 and the connector 10 are sealed and fixed together without falling off.

[0051] Preferably, the plurality of outer wall protrusions 124 are uniformly arranged around the outer wall of the connector 10, and each of the outer wall protrusions 124 is stuck in one of the fixing holes 401. The plurality of side wall protrusions 23 are uniformly arranged around the side wall surface of the connecting portion 21 of the connector 20. In this way, the appearance of the connector 10 and the connector 20 is regular and aesthetic, and the appearance requirements of the connector 20 and the connector 10 are reduced, which facilitates manufacturing.

[0052] Preferably, if Fig. 9As shown, the connector 20 has a side wall groove 203, and the side wall groove 203 is located at the front end of the connector 20 inserted into the insertion port 103. A rubber ring or other material that increases friction can be arranged in the side wall groove 203. When the connecting portion 21 is inserted into or pulled out of the flow channel 101 of the connector 10, the rubber ring can increase the friction of the connector 20 in the flow channel 101 of the connector 10, making it difficult for the connector 20 to fall off, and also enhancing the sealing performance.

[0053] Preferably, the outer wall of the flat tube 30 and the inner wall of the injection molded part 40 can be laser welded to further fix the flat tube 30 and the injection molded part 40 together to prevent the flat tube 30 from falling off.

[0054] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. Multi-channel flat tube, characterized in that: The multi-channel flat tube comprises: A joint, the joint having a flow channel, at least one channel opening and an insertion opening, wherein the channel opening and the insertion opening are both connected to the flow channel, and the joint further having a welding portion, the welding portion being located at an end of the joint relatively close to the insertion opening; a flat tube, the flat tube having a pipeline and two connecting pipe openings, the connecting pipe openings being in communication with the pipeline, one end of the flat tube being insertable into the flow channel, the inner wall of the welding portion being close to the outer wall of the end of the flat tube inserted into the flow channel, so that the welding portion and the outer wall of the end of the flat tube can be welded together by laser; A connector having a connecting channel and an embedding portion, wherein the connector as a whole can be inserted from the insertion port into the circulation channel of the joint, and the size of the embedding portion is smaller than the size of the connecting pipe port, so that when the flat tube is inserted into the circulation channel, the embedding portion can be embedded in the pipe of the flat tube, thereby allowing the circulation channel to be connected to the pipe through the connecting channel.

2. The multi-channel flat tube according to claim 1, characterized in that: The joint and the flat tube are made of resin material.

3. The multi-channel flat tube according to claim 1, characterized in that: The flat tube includes a plurality of inclined plates, and the inclined plates are arranged obliquely at intervals inside the flat tube to divide the pipeline of the flat tube into a plurality of identical small pipelines.

4. The multi-channel flat tube according to claim 3, characterized in that: The connecting member includes a plurality of spacer plates, which are vertically arranged at intervals inside the connecting channel to divide the connecting channel into a plurality of small channels, and an inclined notch is arranged between two adjacent spacer plates, and the inclined notch corresponds to the position of the inclined plate, so that when the connecting member is embedded in the flat tube, the inclined plate can be inserted into the inclined notch.

5. The multi-channel flat tube according to claim 1, characterized in that: The joint also has an adhesive portion, which is formed by expanding and extending the end of the joint that forms the insertion port. The shape of the adhesive portion is the same as the shape of the welding portion, and the distance between the upper and lower walls of the adhesive portion is larger than the distance between the upper and lower walls of the welding portion, so that when the flat tube is inserted into the circulation channel, the inner wall of the adhesive portion and the outer wall of the flat tube form a predetermined gap, and the predetermined gap is used to spray the colloid.

6. The multi-channel flat tube according to claim 1, characterized in that: The connecting piece is partially inserted into the flow channel of the joint, and the embedded portion is embedded in the pipeline of the flat tube. The portion where the joint and the connecting piece are connected is injection molded to form an injection molded part with fixing and sealing functions.

7. The multi-channel flat tube according to claim 6, characterized in that: The portion of the connector close to the insertion port forms a plurality of outer wall protrusions, and the outer wall surface of the connector is provided with a plurality of side wall protrusions, so that the injection molded part forms a plurality of fixing holes and at least one card slot, the outer wall protrusions are stuck in the fixing holes, and the side wall protrusions can be stuck in the card slot.

8. The multi-channel flat tube according to claim 7, characterized in that: A plurality of outer wall protrusions are uniformly surrounded on the outer wall of the joint, and each of the outer wall protrusions is clamped in one of the fixing holes. A plurality of side wall protrusions are uniformly surrounded on the outer surface of the side wall of the connecting portion of the connecting piece.

9. The multi-channel flat tube according to claim 6, characterized in that: The connecting piece has a side wall groove, and the side wall groove is located at the front end portion of the connecting piece inserted into the insertion port.

10. The multi-channel flat tube according to claim 6, characterized in that: The outer wall of the flat tube and the inner wall of the injection molded part can be laser welded to further fix the flat tube and the injection molded part together.

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