Radiating pipe and radiator for automobile and machining method of radiating pipe and radiator

Abstract

The invention relates to the technical field of plate-fin radiators, in particular to an automobile radiating tube which comprises a radiating tube body integrally designed to be of a flat rectangular cylindrical structure. A plurality of first concave pits which are inwards sunken are formed in the surface of the heat dissipation pipe main body, so that first convex hulls are formed in the positions, corresponding to the first concave pits, on the inner circumferential surface of the heat dissipation pipe main body; a plurality of second concave pits which are sunken inwards are further formed in the surface of the heat dissipation pipe main body, so that second convex hulls are formed in the positions, corresponding to the second concave pits, on the inner circumferential surface of the heat dissipation pipe main body; the invention further discloses a machining method of the radiator for the automobile. The radiator has the characteristics that the cooling medium can better form turbulent flow so as to improve the heat dissipation effect, and the manufacturing cost can be better reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of plate-fin radiators, and in particular to a heat dissipation pipe and a radiator for an automobile, and a processing method thereof. Background Art

[0002] Automobile radiators are an indispensable and important component in the cooling systems of many industries. The core component of automobile radiators is the heat pipe, which plays a decisive role in the function of automobile radiators. The heat pipe should have sufficient flow cross-sectional area and use a pump to force the coolant to circulate to achieve the heat dissipation performance required by the equipment.

[0003] Prior art includes Chinese patents (CN213714065U) and (CN208330523U) for automotive radiators. These existing heat pipe structures suffer from the following drawbacks: 1. Because the protrusions or baffles on the heat pipes are uniform in size and angle, the heat dissipation medium (gas, cooling water, or cooling oil) within the heat pipes circulates in a turbulent manner, resulting in poor heat dissipation. 2. The heat exchange tubes in these existing structures are primarily designed for water cooling and are not well suited for use with cooling oil or other media.

[0004] Secondly, in existing radiator manufacturing, three layers of aluminum alloy plates are typically used to create the heat pipe material (4004 or 4104 / 3003 / 4004 or 4104 vacuum welded; 4045 or 4343 / 3003 / 4045 or 4343 continuous furnace welded). This facilitates subsequent welding of the heat pipe to the seal and heat dissipation ribbon. This increases material costs, and therefore the overall cost of the radiator.

[0005] Therefore, how to design a heat pipe, radiator and processing method for automobiles that can better adapt to different cooling media, better make the cooling medium form turbulence to improve the heat dissipation effect, and better reduce manufacturing costs has become a technical problem to be solved by technical personnel in this field. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to design a heat pipe, a radiator and a processing method for an automobile that can better adapt to different cooling media, can better make the cooling medium form turbulence to improve the heat dissipation effect, and can better reduce the manufacturing cost.

[0007] To achieve the above-mentioned objectives, the present invention provides a heat pipe for an automobile, comprising a heat pipe body having an overall flat rectangular cylindrical structure; a plurality of first pits recessed inwardly are provided on the surface of the heat pipe body, so that a first convex bump is formed on the inner circumference of the heat pipe body and at a position corresponding to the first pit; a plurality of second pits recessed inwardly are further provided on the surface of the heat pipe body, so that a second convex bump is formed on the inner circumference of the heat pipe body and at a position corresponding to the second pit; and the characteristic is that the outline size of the first pit is smaller than the outline size of the second pit, and the outline size of the first convex bump is smaller than the outline size of the second convex bump.

[0008] In this automotive heat pipe, a plurality of inwardly recessed first dimples are provided on the heat pipe body, forming first convex bumps on the inner circumference of the heat pipe body at locations corresponding to the first dimples. Furthermore, a plurality of inwardly recessed second dimples are provided on the heat pipe body, forming second convex bumps on the inner circumference of the heat pipe body at locations corresponding to the second dimples. Furthermore, the first dimples are smaller than the second dimples, resulting in a smaller first convex bump than the second convex bump. This structure enhances the turbulence created by the cooling medium (gas, cooling water, or cooling oil) as it circulates through the first and second convex bumps, thereby improving heat dissipation. Furthermore, this structural design is more adaptable to different cooling media.

[0009] As an optimization, the distance from the surface of the heat pipe body to the inner side of the first convex hull and the distance from the surface of the heat pipe body to the inner side of the second convex hull are both 1.83 mm to 1.85 mm.

[0010] In this way, the protruding sizes of the first convex hull and the second convex hull are more reasonable.

[0011] As an optimization, the inner surface of the first convex hull and the inner surface of the second convex hull are respectively in contact with the inner surface of the heat sink body.

[0012] In this way, the turbulence effect formed in the heat dissipation pipe is better, and the heat dissipation effect is better improved.

[0013] As an optimization, the outer contours of the first pit and the second pit are both designed to be elliptical structures.

[0014] In this way, the structural design of the first pit and the second pit is simpler and more reasonable, and is more convenient to process and manufacture.

[0015] As an optimization, the angle formed between the long axis direction of the first pit and the longitudinal direction of the heat pipe body is set to be an acute angle; the angle formed between the long axis direction of the second pit and the longitudinal direction of the heat pipe body is set to be an acute angle.

[0016] In this way, the first recess and the second recess are arranged at different angles, which is more conducive to the formation of turbulence in the cooling medium (gas, cooling water or cooling oil) during the circulation process.

[0017] As an optimization, the angle between the long axis direction of the first pit and the longitudinal direction of the heat pipe body is set at 30°; the angle between the long axis direction of the second pit and the longitudinal direction of the heat pipe body is set at 120°.

[0018] In this way, the angle design of the first pit and the second pit is more reasonable.

[0019] As an optimization, a first pit and a second pit are provided on both surfaces of the heat dissipation pipe body.

[0020] In this way, the first pit and the second pit are provided on both surfaces of the heat dissipation pipe, and the design is more reasonable.

[0021] As an optimization, the first dimples are arranged in multiple groups at intervals along the longitudinal direction of the heat pipe body; each group of first dimples includes four dimples arranged at intervals along the transverse direction of the heat pipe body. The second dimples are arranged in multiple groups at intervals along the longitudinal direction of the heat pipe body; each group of second dimples includes three dimples arranged at intervals along the transverse direction of the heat pipe body; and a group of second dimples is arranged between any two adjacent groups of first dimples.

[0022] In this way, the layout design of the first pit and the second pit is simpler and more reasonable.

[0023] As an optimization, the transverse dimension of the heat exchange tube body is 50 mm; the thickness dimension of the heat exchange tube body is 3.6 mm.

[0024] In this way, the size design of the heat exchange tube body is more reasonable.

[0025] As an optimization, the heat dissipation pipe body includes a tube body with an overall flat rectangular box structure design and an open design on one side and both ends. The two open sides of the tube body are respectively bent inward and then bent outward to form overlapping portions, and the two overlapping portions are attached to and connected together.

[0026] In this way, the entire structural design is simpler and more convenient to process and manufacture.

[0027] Furthermore, a side of the tube body facing away from the opening is continuously bent inward and outward to form a support portion.

[0028] The present technical solution also discloses a radiator for automobile, which is characterized in that it includes a radiator body, the radiator body includes end covers at both ends of which are designed as a whole in a rectangular box structure and are opened on the inner side; it also includes a heat dissipation pipe of the above structure; a plurality of the heat dissipation pipes are arranged vertically stacked between the two end covers, and a seal is provided between the ends of any two adjacent heat dissipation pipes, and a heat dissipation belt is provided between the surfaces of any two heat dissipation pipes; and the corresponding positions of the seals on the ends of the heat dissipation pipes are respectively extended into and connected to the openings of the end covers; it also includes connecting pipes respectively provided on the outside of the end covers and connected to the end covers.

[0029] In this way, the heat dissipation tubes selected for the radiator are provided with first and second pits of different sizes and layout angles, so that they can better adapt to different cooling media and can better form turbulence of the cooling medium to improve the heat dissipation effect.

[0030] As an optimization, the heat dissipation belt and the surface of the heat dissipation pipe, the seal and the end cover, and the end cover and the seal are respectively welded together.

[0031] In this way, the design is more reasonable and the processing and manufacturing are more convenient and simple.

[0032] The present technical solution also discloses a method for processing an automobile radiator, comprising the following steps: a. preparing a heat dissipation pipe, a seal, a heat dissipation belt and an end cover; b. assembling the prepared heat dissipation pipe, seal, heat dissipation belt and end cover to form a radiator; c. welding the heat dissipation belt to the surface of the heat dissipation pipe, the seal to the end cover, and the end cover to the seal; the method is characterized in that: in step a, an aluminum alloy material required for preparing the heat dissipation pipe is selected, and the upper and lower side surfaces of the aluminum alloy material are surface-treated to form a welding surface, and after the heat dissipation pipe is prepared, the welding surface forms the outer peripheral surface of the heat dissipation pipe and is respectively used for welding with the seal and the heat dissipation belt; in step c, the heat dissipation pipe is heated so that the welding surface elements on the heat dissipation pipe are precipitated and respectively welded to the seal and the heat dissipation belt.

[0033] Thus, compared to the prior art method of using three layers of aluminum alloy plates to form the material required for processing heat pipes, this method can use ordinary aluminum alloy materials and form welding surfaces by surface treatment on the upper and lower surfaces of the material. After the heat pipe is prepared, the welding surfaces form the outer circumference of the heat pipe and are used for welding to the seal and heat dissipation band. During the welding process, the heat pipe is heated, causing the welding surface elements on the heat pipe to precipitate and complete the welding connection with the seal and heat dissipation band respectively, thereby achieving the goal of cost saving.

[0034] As an optimization, in step a, after surface treatment is performed on the upper and lower surfaces of the material required for preparing the heat dissipation pipe to form a welding surface, the welding surface of the plate is punched and rolled to obtain a first pit and a second pit, which is then bent into shape to obtain a heat dissipation pipe.

[0035] In this way, the processing steps of the heat dissipation pipe are simpler and more reasonable, and the processing is more convenient.

[0036] As an optimization, the surface treatment includes roughening or frosting.

[0037] In this way, through the roughening or frosting treatment, after the heat dissipation pipe is heated, the elements on its surface can be better precipitated, making the welding quality more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of a heat dissipation pipe for automobile in a specific embodiment of the present invention.

[0039] Figure 2 yes Figure 1 Schematic top view of .

[0040] Figure 3 yes Figure 2 Left view of .

[0041] Figure 4 yes Figure 3 A locally enlarged schematic diagram of position A in FIG.

[0042] Figure 5 yes Figure 3 A locally enlarged schematic diagram of position B in FIG.

[0043] Figure 6 yes Figure 3 A locally enlarged schematic diagram of the C position in FIG.

[0044] Figure 7 It is a Figure 1 Schematic diagram of the structure of the radiator with heat pipe. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, in the description of the present invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific manner. Therefore, they should not be construed as limiting the present invention. The terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] like Figures 1 to 6 As shown, a heat pipe for automobile includes a heat pipe body 1 with an overall flat rectangular cylindrical structure; a plurality of first pits 2 arranged inwardly concave are provided on the surface of the heat pipe body, so that a first convex bump is formed on the inner peripheral surface of the heat pipe body and at positions corresponding to the first pits; a plurality of second pits 3 arranged inwardly concave are further provided on the surface of the heat pipe body, so that a second convex bump is formed on the inner peripheral surface of the heat pipe body and at positions corresponding to the second pits; the outline size of the first pit is smaller than the outline size of the second pit, and the outline size of the first convex bump is smaller than the outline size of the second convex bump.

[0047] In this automotive heat pipe, a plurality of inwardly recessed first dimples are provided on the heat pipe body, forming first convex bumps on the inner circumference of the heat pipe body at locations corresponding to the first dimples. Furthermore, a plurality of inwardly recessed second dimples are provided on the heat pipe body, forming second convex bumps on the inner circumference of the heat pipe body at locations corresponding to the second dimples. Furthermore, the first dimples are smaller than the second dimples, and the first convex bumps are smaller than the second convex bumps. This structure enhances the turbulence created by the cooling medium (cooling water or cooling oil) as it circulates through the first and second convex bumps, thereby improving heat dissipation. Furthermore, this structural design is more adaptable to different cooling media.

[0048] In this specific embodiment, the distance from the surface of the heat pipe body to the inner side of the first convex hump and the distance from the surface of the heat pipe body to the inner side of the second convex hump are both 1.83 mm to 1.85 mm.

[0049] In this way, the protruding sizes of the first convex hull and the second convex hull are more reasonable.

[0050] In this specific embodiment, the inner surface of the first convex hump and the inner surface of the second convex hump are respectively in contact with the inner surface of the heat sink body.

[0051] In this way, the turbulence effect formed in the heat dissipation pipe is better, and the heat dissipation effect is better improved.

[0052] In this specific embodiment, the outer contours of the first pit and the second pit are both designed to be elliptical structures.

[0053] In this way, the structural design of the first pit and the second pit is simpler and more reasonable, and is more convenient to process and manufacture.

[0054] In this specific embodiment, the angle formed between the long axis direction of the first pit and the longitudinal direction of the heat pipe body is an acute angle; the angle formed between the long axis direction of the second pit and the longitudinal direction of the heat pipe body is an acute angle.

[0055] In this way, the first recess and the second recess are arranged at different angles, which is more conducive to the formation of turbulence in the cooling medium (gas, cooling water or cooling oil) during the circulation process.

[0056] In this specific embodiment, the angle between the long axis direction of the first recess and the longitudinal direction of the heat pipe body is 30°; the angle between the long axis direction of the second recess and the longitudinal direction of the heat pipe body is 120°.

[0057] In this way, the angle design of the first pit and the second pit is more reasonable.

[0058] In this specific embodiment, a first pit and a second pit are provided on both surfaces of the heat dissipation pipe body.

[0059] In this way, the first pit and the second pit are provided on both surfaces of the heat dissipation pipe, and the design is more reasonable.

[0060] In this specific embodiment, the first dimples are arranged in multiple groups at intervals along the longitudinal direction of the heat pipe body; each group of first dimples includes four dimples arranged at intervals along the transverse direction of the heat pipe body. The second dimples are arranged in multiple groups at intervals along the longitudinal direction of the heat pipe body; each group of second dimples includes three dimples arranged at intervals along the transverse direction of the heat pipe body; and a group of second dimples is arranged between any two adjacent groups of first dimples.

[0061] In this way, the layout design of the first pit and the second pit is simpler and more reasonable.

[0062] In this specific embodiment, the transverse dimension of the heat exchange tube body is 50 mm; the thickness dimension of the heat exchange tube body is 3.6 mm.

[0063] In this way, the size design of the heat exchange tube body is more reasonable.

[0064] In this specific embodiment, the heat dissipation pipe body includes a tube body with an overall flat rectangular box structure design and an open design on one side and both ends. The two open sides of the tube body are respectively bent inward and then bent outward to form a lap joint 4, and the two lap joints are attached and connected together.

[0065] In this way, the entire structural design is simpler and more convenient to process and manufacture.

[0066] Furthermore, the side of the tube body facing away from the opening is continuously bent inward and outward to form a support portion 5 .

[0067] like Figure 7As shown; this embodiment also discloses a car radiator, including a radiator body, the radiator body including end covers 6 with an overall rectangular box structure at both ends and an open inner side; also including a heat pipe 7 of the above structure; a plurality of the heat pipes are arranged vertically stacked between the two end covers, and a seal 8 is provided between any two adjacent heat pipe ends, and a heat dissipation belt 9 is provided between any two heat pipe surfaces; and the corresponding positions of the seals at the ends of the heat pipes are respectively extended into and connected to the end cover openings; and also including connecting pipes 10 respectively provided on the outside of the end covers and connected to the end covers.

[0068] In this way, the heat dissipation tubes selected for the radiator are provided with first and second pits of different sizes and layout angles, so that they can better adapt to different cooling media and can better form turbulence of the cooling medium to improve the heat dissipation effect.

[0069] Specifically, the heat dissipation belt and the surface of the heat dissipation pipe, the seal and the end cover, and the end cover and the seal are respectively connected together by welding.

[0070] In this way, the design is more reasonable and the processing and manufacturing are more convenient and simple.

[0071] This embodiment also discloses a method for processing a radiator for an automobile, comprising the following steps: a. preparing a heat dissipation pipe, a seal, a heat dissipation belt and an end cover; b. assembling the prepared heat dissipation pipe, seal, heat dissipation belt and end cover to form a radiator; c. welding the heat dissipation belt to the surface of the heat dissipation pipe, the seal to the end cover, and the end cover to the seal; the method is characterized in that in step a, an aluminum alloy material required for preparing the heat dissipation pipe is selected, and the upper and lower side surfaces of the aluminum alloy material are surface-treated to form a welding surface, and after the heat dissipation pipe is prepared, the welding surface forms the outer peripheral surface of the heat dissipation pipe and is respectively used for welding with the seal and the heat dissipation belt; in step c, the heat dissipation pipe is heated so that the welding surface elements on the heat dissipation pipe are precipitated and respectively correspondingly welded to the seal and the heat dissipation belt.

[0072] Thus, compared to the prior art method of using three layers of aluminum alloy plates to form the material required for processing heat pipes, this method can use ordinary aluminum alloy materials and form welding surfaces by surface treatment on the upper and lower surfaces of the material. After the heat pipe is prepared, the welding surfaces form the outer circumference of the heat pipe and are used for welding to the seal and heat dissipation band. During the welding process, the heat pipe is heated, causing the welding surface elements on the heat pipe to precipitate and complete the welding connection with the seal and heat dissipation band respectively, thereby achieving the goal of cost saving.

[0073] Specifically, in step a, after surface treatment is performed on the upper and lower surfaces of the material required for preparing the heat pipe to form a welding surface, the welding surface of the plate is punched and rolled to obtain a first pit and a second pit, which is then bent to obtain a heat pipe.

[0074] In this way, the processing steps of the heat dissipation pipe are simpler and more reasonable, and the processing is more convenient.

[0075] Specifically, the surface treatment includes roughening or frosting.

[0076] In this way, through the roughening or frosting treatment, after the heat dissipation pipe is heated, the elements on its surface can be better precipitated, making the welding quality more stable and reliable.

[0077] The present invention also discloses an aluminum alloy required for preparing a heat dissipation pipe. The aluminum alloy required for preparing a heat dissipation pipe comprises the following weight percentages: Si is 2.4-2.6%, Fe is ≤0.25%, Cu is ≤0.05%, Mn is 1.1-1.4%, Mg is ≤0.05%, Cr is ≤0.05%, Zn is 1.40-1.60%, Ti is ≤0.05%; and the remainder is Al.

[0078] Specifically, the weight percentages of the aluminum alloy required for preparing the heat pipe are as follows: Si is 2.41%, Fe is 0.21%, Cu is 0.03%, Mn is 1.19%, Mg is 0.01%, Cr is ≤0.01%, Zn is 1.44%, Ti is 0.03%; the rest is Al.

[0079] In this way, the heat dissipation pipe is manufactured by processing the plate prepared from the above-mentioned aluminum alloy. After being roughened or frosted, heating and heating can better precipitate elements to complete welding and improve welding quality.

[0080] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A heat pipe for an automobile, comprising a heat pipe body having an overall flat rectangular cylindrical structure; a plurality of first indentations formed inwardly on the surface of the heat pipe body, such that first convex bumps are formed on the inner circumference of the heat pipe body at positions corresponding to the first indentations; a plurality of second indentations formed inwardly on the surface of the heat pipe body, such that second convex bumps are formed on the inner circumference of the heat pipe body at positions corresponding to the second indentations; and characterized in that: The outline size of the first concave pit is set smaller than the outline size of the second concave pit, and the outline size of the first convex hull is set smaller than the outline size of the second convex hull.

2. The automotive heat pipe according to claim 1, wherein: The distance from the surface of the heat dissipation pipe body to the inner side of the first convex hump and the distance from the surface of the heat dissipation pipe body to the inner side of the second convex hump are both 1.83 mm to 1.85 mm.

3. The automotive heat dissipation pipe according to claim 1, wherein: The inner surface of the first convex hump and the inner surface of the second convex hump are respectively in contact with the inner surface of the heat sink body.

4. The automotive heat dissipation pipe according to claim 1, wherein: A first recess and a second recess are provided on both surfaces of the heat dissipation pipe body.

5. The automotive heat dissipation pipe according to claim 1, wherein: The first dimples are arranged in groups at intervals along the longitudinal direction of the heat pipe body; each group of first dimples includes four dimples arranged in intervals along the transverse direction of the heat pipe body. The second dimples are arranged in groups at intervals along the longitudinal direction of the heat pipe body; each group of second dimples includes three dimples arranged in intervals along the transverse direction of the heat pipe body; and a group of second dimples is arranged between any two adjacent groups of first dimples.

6. A radiator for automobile, characterized in that: The radiator comprises a radiator body, which comprises end caps at both ends of which are designed as a whole in a rectangular box structure and are opened on the inner side; the radiator also comprises a heat pipe according to any one of claims 1 to 5; a plurality of the heat pipes are arranged vertically stacked between the two end caps, a seal is provided between the ends of any two adjacent heat pipes, and a heat dissipation belt is provided between the surfaces of any two heat pipes; and the corresponding positions of the seals at the ends of the heat pipes are respectively extended into and connected to the openings of the end caps; and the radiator also comprises connecting pipes respectively provided on the outside of the end caps and connected to the end caps.

7. The automotive heat pipe according to claim 6, characterized in that: The heat dissipation belt and the surface of the heat dissipation pipe, the seal and the end cover, and the end cover and the seal are respectively connected together by welding.

8. A method for manufacturing an automobile radiator, comprising the following steps: a. preparing a heat pipe, a seal, a heat dissipation belt, and an end cap; b. assembling the prepared heat pipe, seal, heat dissipation belt, and end cap to form a radiator; c. welding the heat dissipation belt to the surface of the heat pipe, the seal to the end cap, and the end cap to the seal; characterized in that ; In step a, an aluminum alloy material required for preparing a heat dissipation pipe is selected, and surface treatment is performed on the upper and lower side surfaces of the aluminum alloy material to form a welding surface, and after the heat dissipation pipe is prepared, the welding surface forms the outer peripheral surface of the heat dissipation pipe and is respectively used for welding with the seal and the heat dissipation belt; in step c, the heat dissipation pipe is heated so that the welding surface elements on the heat dissipation pipe are precipitated and respectively correspondingly welded to the seal and the heat dissipation belt to complete the connection.

9. The method for processing an automobile radiator according to claim 8, wherein: In step a, after surface treatment is performed on the upper and lower surfaces of the material required for preparing the heat pipe to form a welding surface, the welding surface of the plate is punched and rolled to obtain a first pit and a second pit, and then bent to obtain a heat pipe.

10. The method for processing an automobile radiator according to claim 8, wherein: The surface treatment includes roughening or frosting.

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