Cold roll forming aluminum alloy multi-runner folding flat pipe

Abstract

The utility model discloses a cold roll forming aluminum alloy multi-runner folding flat pipe which comprises an upper flat pipe and a lower flat pipe, a heat dissipation flat pipe is arranged between the upper flat pipe and the lower flat pipe, the two ends of the upper flat pipe are provided with a first outer arc-shaped clamping part and a first inner arc-shaped clamping part respectively, and the first outer arc-shaped clamping part and the first inner arc-shaped clamping part are provided with a second outer arc-shaped clamping part respectively. A second outer arc-shaped clamping part and a second inner arc-shaped clamping part are arranged at the two ends of the lower flat pipe correspondingly, the heat dissipation flat pipe comprises a supporting part, an extrusion part and a channel, and the inner side of the first outer arc-shaped clamping part and the inner side of the second outer arc-shaped clamping part are both fixedly connected with protruding strips; grooves are formed in the outer side of the first inner arc-shaped clamping part and the outer side of the second inner arc-shaped clamping part, and the protruding strips are connected with the grooves in a sliding mode and matched with the grooves. Through the structure, the problems of complex operation and low heat exchange efficiency are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation pipe fittings, in particular to a cold-bent aluminum alloy multi-channel folded flat tube. Background Art

[0002] Heat dissipation pipes are widely used in brazed water cooling plates for power batteries of new energy vehicles, large-section water tanks of traditional automobiles or engineering machinery, oil coolers and intercoolers, etc. Heat dissipation pipes of traditional technology require extrusion, CNC or welding processes; for large-section water tanks or heat exchangers of engineering machinery, the existing technology adopts a plate-fin manufacturing process, that is, a layer of plate, a layer of fins, and another layer of plate, with seals on both sides; for intercoolers commonly used in the automotive industry, the existing technology adopts an extruded porous tube or high-frequency welded tube with an inner fin.

[0003] The above process routes all require a lot of manual intervention and must be completed manually. They also consume a lot of materials and are difficult to assemble automatically. The manufacturing process is complicated, the manufacturing efficiency is low, the manufacturing cost is high, and the weight and size of the pipes are large, which is not conducive to lightweighting and will also lead to low heat exchange efficiency. Therefore, a cold-bent aluminum alloy multi-channel folded flat tube is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a cold-bent aluminum alloy multi-channel folded flat tube, which solves the problems of complex operation and low heat exchange efficiency.

[0005] The utility model also provides the above-mentioned cold-bent aluminum alloy multi-channel folded flat tube, comprising: an upper flat tube and a lower flat tube, a heat dissipation flat tube is arranged between the upper flat tube and the lower flat tube, two ends of the upper flat tube are respectively provided with a first outer arc clamping portion and a first inner arc clamping portion, two ends of the lower flat tube are respectively provided with a second outer arc clamping portion and a second inner arc clamping portion, the heat dissipation flat tube comprises a supporting portion, an extrusion portion and a channel, the inner sides of the first outer arc clamping portion and the second outer arc clamping portion are fixedly connected with convex strips, the outer sides of the first inner arc clamping portion and the second inner arc clamping portion are respectively provided with grooves, the convex strips are slidably connected to the grooves and are adapted to the grooves.

[0006] According to the cold-bent aluminum alloy multi-channel folded flat tube, the second inner arc-shaped clamping portion is located inside the first outer arc-shaped clamping portion.

[0007] According to the cold-bent aluminum alloy multi-channel folded flat tube, the first inner arc-shaped clamping portion is located inside the second outer arc-shaped clamping portion.

[0008] According to the cold-bent aluminum alloy multi-channel folded flat tube, the convex strips and the concave grooves are both arranged in an arc shape.

[0009] According to the cold-bent aluminum alloy multi-channel folded flat tube, the extrusion parts at both ends of the heat dissipation flat tube are respectively located inside the first inner arc clamping part and the second inner arc clamping part.

[0010] According to the cold-bent aluminum alloy multi-channel folded flat tube, the support portion is in a rectangular wave shape.

[0011] According to the cold-bent aluminum alloy multi-channel folded flat tube, the upper flat tube, the lower flat tube and the heat dissipation flat tube are all made of aluminum alloy.

[0012] According to the cold-bent aluminum alloy multi-channel folded flat tube, the overall width of the folded flat tube is 8mm-120mm and the thickness is 0.8mm-10mm. The wall thickness of the upper flat tube and the lower flat tube are both above 0.12mm, and the number of holes in the channel is 2-35 holes.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, the first outer arc-shaped clamping part and the first inner arc-shaped clamping part are respectively provided at both ends of the upper flat tube, and the second outer arc-shaped clamping part and the second inner arc-shaped clamping part are respectively provided at both ends of the lower flat tube. When installing, the heat dissipation flat tube is placed between the upper flat tube and the lower flat tube, and then the upper flat tube and the lower flat tube are squeezed from both ends so that the second inner arc-shaped clamping part is located inside the first outer arc-shaped clamping part, and the first inner arc-shaped clamping part is located inside the second outer arc-shaped clamping part. Then, the upper flat tube and the lower flat tube are fixed by the convex strips and the grooves, which is convenient for operation and installation.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is a structural diagram of a cold-bent aluminum alloy multi-channel folded flat tube of the utility model;

[0018] Figure 2 This is a cross-sectional view of a cold-bent aluminum alloy multi-channel folded flat tube of the utility model;

[0019] Figure 3 This is a heat dissipation flat tube structure diagram of a cold-bent aluminum alloy multi-channel folded flat tube of the utility model;

[0020] Figure 4 for Figure 2 A magnified view of the structure at center.

[0021] Legend:

[0022] 1. Upper flat tube; 11. First outer arc-shaped clamping portion; 12. First inner arc-shaped clamping portion; 2. Lower flat tube; 21. Second outer arc-shaped clamping portion; 22. Second inner arc-shaped clamping portion; 3. Heat dissipation flat tube; 31. Support portion; 32. Extrusion portion; 33. Channel; 4. Groove; 5. Raised strip. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4 The utility model embodiment is a cold-bent aluminum alloy multi-channel folded flat tube, which includes an upper flat tube 1 and a lower flat tube 2. The overall width of the folded flat tube is 8mm-120mm and the thickness is 0.8mm-10mm. The wall thickness of the upper flat tube 1 and the lower flat tube 2 are both above 0.12mm. The number of holes in the channel 33 is 2-35 holes. A heat dissipation flat tube 3 is provided between the upper flat tube 1 and the lower flat tube 2. The upper flat tube 1, the lower flat tube 2 and the heat dissipation flat tube 3 are all made of aluminum alloy. The upper flat tube 1 is provided with a first outer arc clamping portion 11 and a first inner arc clamping portion 12 at both ends, and the lower flat tube 2 is provided with a second outer arc clamping portion 21 and a second inner arc clamping portion 22 at both ends. The second inner arc clamping portion 22 is located inside the first outer arc clamping portion 11, and the first inner arc clamping portion 12 is located inside the second outer arc clamping portion 21.

[0025] The heat dissipation flat tube 3 includes a supporting portion 31, an extruding portion 32 and a channel 33. The supporting portion 31 is in a rectangular wave shape. The extruding portions 32 at both ends of the heat dissipation flat tube 3 are respectively located inside the first inner arc-shaped clamping portion 12 and the second inner arc-shaped clamping portion 22. The first outer arc-shaped clamping portion 11 and the second outer arc-shaped clamping portion 21 are both fixedly connected with convex strips 5 on their inner sides. The first inner arc-shaped clamping portion 12 and the second inner arc-shaped clamping portion 22 are both provided with grooves 4 on their outer sides. The convex strips 5 are slidably connected to the grooves 4 and are adapted to the grooves 4. Both the convex strips 5 and the grooves 4 are arranged in an arc shape.

[0026] Working principle: During installation, place the heat dissipating flat tube 3 between the upper flat tube 1 and the lower flat tube 2, and then squeeze the upper flat tube 1 and the lower flat tube 2 from both ends so that the second inner arc-shaped clamping portion 22 is located inside the first outer arc-shaped clamping portion 11, and the first inner arc-shaped clamping portion 12 is located inside the second outer arc-shaped clamping portion 21, and then fix the upper flat tube 1 and the lower flat tube 2 by the convex strip 5 and the groove 4, which is convenient for operation and installation.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A cold-formed aluminum alloy multi-channel folded flat tube, characterized in that: include: An upper flat tube (1) and a lower flat tube (2), a heat dissipation flat tube (3) is provided between the upper flat tube (1) and the lower flat tube (2), the upper flat tube (1) is provided with a first outer arc-shaped clamping portion (11) and a first inner arc-shaped clamping portion (12) at two ends, the lower flat tube (2) is provided with a second outer arc-shaped clamping portion (21) and a second inner arc-shaped clamping portion (22) at two ends, the heat dissipation flat tube (3) comprises a supporting portion (31), an extruding portion (32) and a channel (33), the first outer arc-shaped clamping portion (11) and the second outer arc-shaped clamping portion (21) are both fixedly connected with a convex strip (5) on their inner sides, the first inner arc-shaped clamping portion (12) and the second inner arc-shaped clamping portion (22) are both provided with a groove (4) on their outer sides, the convex strip (5) is slidably connected with the groove (4) and is adapted to fit the groove (4).

2. The cold-formed aluminum alloy multi-channel folded flat tube according to claim 1, characterized in that: The second inner arc-shaped clamping portion (22) is located inside the first outer arc-shaped clamping portion (11).

3. The cold-formed aluminum alloy multi-channel folded flat tube according to claim 2, characterized in that: The first inner arc-shaped clamping portion (12) is located inside the second outer arc-shaped clamping portion (21).

4. The cold-formed aluminum alloy multi-channel folded flat tube according to claim 3, characterized in that: The convex strips (5) and the concave grooves (4) are both arranged in an arc shape.

5. The cold-formed aluminum alloy multi-channel folded flat tube according to claim 4, characterized in that: The extrusion portions (32) at both ends of the heat dissipation flat tube (3) are respectively located inside the first inner arc-shaped clamping portion (12) and the second inner arc-shaped clamping portion (22).

6. The cold-formed aluminum alloy multi-channel folded flat tube according to claim 5, characterized in that: The supporting portion (31) is in a rectangular wave shape.

7. The cold-formed aluminum alloy multi-channel folded flat tube according to claim 6, characterized in that: The upper flat tube (1), the lower flat tube (2) and the heat dissipation flat tube (3) are all made of aluminum alloy.

8. The cold-formed aluminum alloy multi-channel folded flat tube according to claim 7, characterized in that: The overall width of the folded flat tube is 8 mm to 120 mm, and the thickness is 0.8 mm to 10 mm. The wall thickness of the upper flat tube (1) and the lower flat tube (2) are both above 0.12 mm. The number of holes in the channel (33) is 2 to 35.

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