Heat pipe structure with expansion part

Abstract

A heat pipe structure with an expansion portion comprises a first pipe portion and two second pipe portions respectively extending from two ends of the first pipe portion, a heating surface is arranged on the first pipe portion, and each second pipe portion is provided with a second pipe diameter. Wherein the heating surface has a width in the radial direction of the two second pipe parts, the width of the heating surface is larger than the second pipe diameter of the two second pipe parts, and the perimeter of the section shape of the first pipe part is larger than the perimeter of the section shape of the two second pipe parts, so that the heating surface can effectively obtain the maximum heating surface.

Description

Technical Field

[0001] The utility model relates to a heat exchange element, in particular to a heat pipe structure with an enlarged portion. Background Art

[0002] If the existing heat pipe is to contact the surface of the electronic heating element to help the electronic heating element to perform heat exchange and other heat dissipation, the heat pipe can be flattened to form a flat heating surface on the heat pipe for contacting the surface of the electronic heating element.

[0003] However, since the outer diameter of the heat pipe is usually small, the area that can be extended after being flattened is often not enough to completely cover the surface of the electronic heating element. If a heat pipe is made of a tube with a larger outer diameter, it is necessary to open a larger hole on the fin when the heat pipe is passed through the fin, thereby reducing the heat dissipation area of ​​the fin. Utility Model Content

[0004] The main purpose of the utility model is to provide a heat pipe structure with an expanded portion, which forms parts of different outer diameters on the heat pipe body by shrinking or expanding the tube, and then applies pressure to the part with a larger outer diameter to effectively obtain a maximized heating surface.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a heat pipe structure with an enlarged portion, including a first pipe portion, provided with a heating surface; and two second pipe portions, respectively extending from two ends of the first pipe portion, and each of the second pipe portions has a second pipe diameter; wherein the heating surface has a width in the radial direction of each of the second pipe portions, the width is greater than the second pipe diameter, and the circumference of the cross-sectional shape of the first pipe portion is greater than the circumference of the cross-sectional shape of each of the second pipe portions.

[0006] In one embodiment, a forming surface opposite to the heating surface is provided on the first tube portion.

[0007] In one embodiment, the forming surface is a plane or a curved surface.

[0008] In one embodiment, the forming surface and the heating surface are flat surfaces with the same width.

[0009] In one embodiment, the forming surface and the heating surface make the cross-section of the first tube portion a polygon or a half-moon shape.

[0010] In one embodiment, the first tube portion has a first tube diameter and is pressurized to form a heating surface, and the first tube diameter is greater than the second tube diameter.

[0011] In one embodiment, the first tube diameter and the second tube diameter are formed by a shrinking tube or an expanding tube.

[0012] In one embodiment, a capillary layer is disposed inside the first tube portion and each of the second tube portions.

[0013] In one embodiment, each second tube portion is provided with a plurality of fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the heat pipe shrink tube of the utility model before use.

[0015] Figure 2 It is a three-dimensional schematic diagram of the heat pipe after shrinking the utility model.

[0016] Figure 3 It is a three-dimensional schematic diagram of the heat pipe after sealing of the utility model.

[0017] Figure 4 It is a three-dimensional schematic diagram of the heat pipe of the utility model after pressure is applied.

[0018] Figure 5 It is a side sectional view of the heat pipe of the utility model.

[0019] Figure 6 This is an end cross-sectional view of the heat pipe of the utility model.

[0020] Figure 7 This is a schematic diagram of the use status of the heat pipe of the utility model.

[0021] Figure 8 It is a schematic diagram of another embodiment of the heat pipe of the utility model.

[0022] Fig. 9 This is a schematic diagram of another embodiment of the heat pipe of the present invention.

[0023] In the figure:

[0024] 1: Heat pipe structure;

[0025] 10: first tube;

[0026] 100: heating surface;

[0027] 101: forming a surface;

[0028] D: first pipe diameter;

[0029] W: width;

[0030] P: perimeter;

[0031] 11: second tube;

[0032] 110: sealing;

[0033] d: second pipe diameter;

[0034] p: perimeter;

[0035] 2: Fins;

[0036] 3: Heat source. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0038] See also Figure 4 , Figure 5 and Figure 6 , respectively, a three-dimensional schematic diagram of the heat pipe of the utility model after pressure is applied, a side cross-sectional view and an end cross-sectional view of the heat pipe of the utility model. The utility model provides a heat pipe structure 1 with an enlarged portion, comprising a first pipe portion 10 and two second pipe portions 11 extending from two ends of the first pipe portion 10; wherein:

[0039] Please read first Figure 1 and Figure 2 As shown, the heat pipe structure 1 can be composed of a single diameter or a circular tubular body with the same diameter (i.e. Figure 1 As shown in FIG. 1 ), by shrinking or expanding the tube, the first tube portion 10 and the second tube portions 11 (i.e., as shown in FIG. 1 ) are formed on the tube body. Figure 2 As shown). In the embodiment of the present invention, the two ends of the aforementioned tube body are respectively reduced by reducing the tube, so that the first tube portion 10 in the middle section has a first tube diameter D, and the second tube portions 11 at the two ends each have a second tube diameter d, and the first tube diameter D is larger than the second tube diameter d. The size of the first tube diameter D can be substantially equal to the tube diameter of the aforementioned tube body or slightly smaller, and the sizes of the second tube diameters d of each of the second tube portions 11 can be equal or different, but must be smaller than the first tube diameter D. In addition, as Figure 3 As shown, a capillary layer 12 (such as Figure 5 As shown in the figure) and after the vacuuming operation is completed, each of the second tube parts 11 can be sealed; wherein, the second tube part 11 at any end can be sealed 110 first, and then the vacuuming operation is performed, and then the second tube part 11 at the other end is sealed 110.

[0040] like Figures 4 to 6 As shown, the first tube 10 is then pressed to form a flat heating surface 100 on the first tube 10, and the heating surface 100 has a width W in the radial direction of the first tube 10 or the second tube 11, and the width W is also greater than the second tube diameter d of the second tube 11. The heating surface 100 is used to contact a heat source 3 (such as Figure 7As shown), the heat pipe structure 1 can be provided with a plurality of fins 2 on the two second tube parts 11, so as to help the heat source 3 to dissipate heat; and the heat source 3 can be an electronic heating element, such as a CPU or a GPU. At the same time, the first tube part 10 is also formed with a forming surface 101 opposite to the heating surface 100. The forming surface 101 can be determined by the shape of the mold cavity (not shown) of the mold for pressing the first tube part 10, so as to press the cross section of the first tube part 10 into a desired geometric shape, etc.; that is, Figure 6 As shown, the forming surface 101 can be a flat surface with the same width as the heating surface 100; or Figure 8 As shown, the forming surface 101 and the heating surface 100 can make the cross-sectional shape of the first tube portion 10 a polygon (such as a rectangle or a triangle, etc.); or Fig. 9 As shown, the forming surface 101 may be an arc surface, or the cross-sectional shape of the first tube portion 10 is a half-moon shape together with the heating surface 100 .

[0041] Please see again Figure 6 As shown, the utility model mainly makes the circumference P of the cross-sectional shape of the first tube part 10 larger than the circumference p of the cross-sectional shape of the second tube parts 11. Among them, since the cross-sectional shape of the second tube parts 11 maintains a circular tube shape, the circumference p thereof is equal to the second tube diameter d multiplied by pi π (i.e. p=d·π), and after the first tube part 10 is pressed, the circumference P thereof is slightly larger than or substantially equal to the first tube diameter D multiplied by pi π (i.e. p=D·π) because the material itself is squeezed and extended. Therefore, when the first tube diameter D is larger than the second tube diameter d, the circumference P of the first tube portion 10 after pressure is applied must be larger than the circumference p of the second tube portion 11, so that the heating surface 100 can effectively obtain a maximized heating surface in width W, which is conducive to complete coverage of the surface of the heat source 3. At the same time, the fins 2 can be penetrated with a smaller second tube diameter d to reduce the area that needs to be deducted when the fins 2 are penetrated, thereby reducing the heat dissipation area of ​​the fins 2, and relatively increasing its heat dissipation area to achieve a better cooling effect.

[0042] Therefore, by means of the above-mentioned structural composition, the heat pipe structure with an enlarged portion of the present invention can be obtained.

[0043] Therefore, the heat pipe structure with an enlarged portion of the present invention is composed of a tube body with the same outer diameter. By shrinking or expanding the tube, the heat pipe can form a first tube portion 10 and two second tube portions 11 with different outer diameters on the tube body, and then the first tube portion 10 with a larger outer diameter is pressurized to form an effectively maximized heating surface 100 on the first tube portion 10, thereby allowing the heat pipe structure 1 to be more completely in contact with the surface of the heat source 3. At the same time, the fins 2 can be connected in series with the relatively small second tube diameter d to avoid reducing the area of ​​the fins 2 and affecting heat dissipation.

[0044] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A heat pipe structure with an enlarged portion, characterized in that: include: The first pipe portion is provided with a heating surface; as well as Two second tube parts respectively extending from two ends of the first tube part, and each of the second tube parts has a second tube diameter; The heating surface has a width in the radial direction of each second tube portion, the width is greater than the second tube diameter, and the circumference of the cross-sectional shape of the first tube portion is greater than the circumference of the cross-sectional shape of each second tube portion.

2. The heat pipe structure with an enlarged portion according to claim 1, characterized in that: The first tube portion is provided with a forming surface opposite to the heating surface.

3. The heat pipe structure with an enlarged portion according to claim 2, characterized in that: The forming surface is a plane or a curved surface.

4. The heat pipe structure with an enlarged portion according to claim 2, characterized in that: The forming surface and the heating surface are flat surfaces with the same width.

5. The heat pipe structure with an enlarged portion according to claim 2, characterized in that: The forming surface and the heating surface make the cross-sectional shape of the first tube part polygonal or half-moon shaped.

6. The heat pipe structure with an enlarged portion according to claim 1, characterized in that: The first tube portion has a first tube diameter and is pressed to form the heating surface, and the first tube diameter is larger than the second tube diameter.

7. The heat pipe structure with an enlarged portion according to claim 6, characterized in that: The first tube diameter and the second tube diameter are formed by a shrinking tube or an expanding tube.

8. The heat pipe structure with an enlarged portion according to claim 1, characterized in that: A capillary layer is provided inside the first tube part and each of the second tube parts.

9. The heat pipe structure with an enlarged portion according to claim 1, characterized in that: A plurality of fins are respectively disposed on each of the second tube portions.

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