Heat dissipation unit, heat dissipation module and electronic equipment

Abstract

The utility model discloses a heat dissipation unit, a heat dissipation module and an electronic device, when the heat dissipation unit works, a second end of a second heat dissipation pipe can be contacted with a structure to be subjected to heat dissipation, after heat on the structure to be subjected to heat dissipation is transmitted to the second end, working fluid in a second vacuum cavity can absorb the heat to be vaporized, and the heat dissipation efficiency is improved. And the working fluid vaporized in the first vacuum cavity is liquefied after releasing heat, and flows back to the second vacuum cavity from the first vacuum cavity along the capillary structure. Due to the fact that the multiple second heat dissipation pipes are arranged on the connecting section of the first heat dissipation pipe, heat in the structure to be subjected to heat dissipation can be transmitted to the first heat dissipation pipe along the multiple second heat dissipation pipes, the heat transmission efficiency of the whole heat dissipation unit is higher, and the heat dissipation effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation, and particularly relates to a heat dissipation unit, a heat dissipation module and an electronic device. Background Art

[0002] During the operation of an electronic device, the electronic device generates heat. If this heat cannot be timely exchanged to the outside, the temperature of the electronic device itself will rise, thus burning out the electronic device.

[0003] In the related art, a heat pipe is generally installed on the electronic device, and the heat generated when the electronic device works is exchanged to the outside through the heat pipe, thereby realizing the cooling of the electronic device.

[0004] However, the existing heat pipes are generally of a single plate structure, and their heat conduction ability is limited. Summary of the Utility Model

[0005] An object of the utility model is to solve at least one of the technical problems existing in the prior art. In the first aspect of the utility model, a heat dissipation unit with better heat dissipation effect is provided. In the second aspect of the utility model, a heat dissipation module is also provided. In the third aspect of the utility model, an electronic device is also provided.

[0006] According to the heat dissipation unit provided by the first aspect embodiment of the utility model, it includes a first heat dissipation pipe and a plurality of second heat dissipation pipes extending along a second direction; a first vacuum cavity is arranged in the first heat dissipation pipe, and the first heat dissipation pipe includes a connecting section extending along a first direction; a second vacuum cavity is arranged in the second heat dissipation pipe, the second heat dissipation pipes are arranged at intervals along the first direction, the second heat dissipation pipe includes opposite first end and second end, the first end is connected with the connecting section, and the first heat dissipation pipe and the second heat dissipation pipes are integrally formed of the same material, the first vacuum cavity is communicated with the second vacuum cavity, and a working fluid is accommodated in both the first vacuum cavity and the second vacuum cavity, the second end is used for contacting with a structure to be dissipated; capillary structures are arranged on the cavity wall of the first vacuum cavity and the cavity wall of the second vacuum cavity.

[0007] The heat dissipation unit of the utility model has at least the following beneficial effects: When the heat dissipation unit of the present application works, the second end of the second heat dissipation pipe can contact with the structure to be dissipated. After the heat on the structure to be dissipated is transferred to the second end, the working fluid in the second vacuum cavity will absorb heat and vaporize, and flow into the first vacuum cavity through the second vacuum cavity. The working fluid vaporized in the first vacuum cavity releases heat and liquefies, and then flows back into the second vacuum cavity from the first vacuum cavity along the capillary structure. Since a plurality of second heat dissipation pipes are arranged on the connecting section of the first heat dissipation pipe, the heat in the structure to be dissipated can be transferred to the first heat dissipation pipe along a plurality of second heat dissipation pipes, and the heat transfer efficiency of the whole heat dissipation unit is faster and the heat dissipation effect is better.

[0008] For the heat dissipation unit according to the first aspect embodiment of the present utility model, the working fluid is one or a combination of water, ethanol, and acetone.

[0009] For the heat dissipation unit according to the first aspect embodiment of the present utility model, the first heat dissipation tube further includes two heat conduction sections, and the two heat conduction sections are smoothly connected to the opposite ends of the connection section respectively. The heat conduction sections extend along the second direction and are arranged side by side with the second heat dissipation tube. One end of the heat conduction section away from the connection section forms a contact end for contacting the structure to be dissipated; the first vacuum cavity includes a first sub-cavity and a second sub-cavity. The first sub-cavity is formed in the connection section, and the second sub-cavity is formed in the heat conduction section.

[0010] For the heat dissipation unit according to the first aspect embodiment of the present utility model, the end face of the contact end is an arc surface.

[0011] For the heat dissipation unit according to the first aspect embodiment of the present utility model, the end face of the second end is an arc surface.

[0012] For the heat dissipation unit according to the first aspect embodiment of the present utility model, a connection plane is formed on the surface of the connection section, and the first end is welded to the connection plane.

[0013] For the heat dissipation unit according to the first aspect embodiment of the present utility model, both the first heat dissipation tube and the second heat dissipation tube are copper tubes.

[0014] For the heat dissipation module according to the second aspect embodiment of the present utility model, it includes a plurality of heat dissipation units provided by the first aspect embodiment of the present utility model. The plurality of heat dissipation units are spaced apart along the third direction. The third direction is spaced at a certain angle from the first direction and the second direction respectively; the first heat dissipation tubes of the heat dissipation module are sequentially distributed along the third direction, and any two second heat dissipation tubes of the heat dissipation module are arranged side by side.

[0015] For the heat dissipation module according to the second aspect embodiment of the present utility model, the first heat dissipation tubes of the heat dissipation module are sequentially welded and connected along the third direction.

[0016] For the electronic device according to the third aspect embodiment of the present utility model, it includes the heat dissipation module provided by the second aspect embodiment of the present utility model.

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0019] Figure 1 It is a schematic structural diagram of the heat dissipation unit according to an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 a cross-sectional view of the heat dissipation unit shown;

[0021] Figure 3 is a schematic structural diagram of a heat dissipation module according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] heat dissipation unit 10;

[0024] first heat dissipation tube 100; first vacuum chamber 101; first sub-chamber 101a; second sub-chamber 101b; connecting section 110; connecting plane 111; heat conducting section 120; contact end 121;

[0025] second heat dissipation tube 200; second vacuum chamber 201; first end 210; second end 220. Detailed implementation manners

[0026] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0030] Next, refer to Figure 1 and Figure 2A detailed description is given to the heat dissipation unit 10 of the first aspect of the present utility model.

[0031] Referring to Figure 1 and Figure 2 , the heat dissipation unit 10 according to the embodiment of the first aspect of the present utility model includes a first heat dissipation tube 100 and a plurality of second heat dissipation tubes 200 extending along the second direction.

[0032] A first vacuum cavity 101 is provided inside the first heat dissipation tube 100, and the first heat dissipation tube 100 includes a connection section 110 extending along the first direction; a second vacuum cavity 201 is provided inside the second heat dissipation tube 200, the second heat dissipation tubes 200 are arranged at intervals along the first direction, the second heat dissipation tube 200 includes opposite first ends 210 and second ends 220, the first end 210 is connected to the connection section 110, and the first heat dissipation tube 100 and the second heat dissipation tubes 200 are integrally formed of the same material. The first vacuum cavity 101 is communicated with the second vacuum cavity 201, and a working fluid is contained in both the first vacuum cavity 101 and the second vacuum cavity 201. The second end 220 is used to contact the structure to be heat-dissipated; capillary structures are provided on the cavity walls of both the first vacuum cavity 101 and the second vacuum cavity 201.

[0033] For example, as shown in Figure 1 and Figure 2 , the heat dissipation unit 10 includes one first heat dissipation tube 100 and two second heat dissipation tubes 200. The first heat dissipation tube 100 includes a connection section 110 extending left and right. The two second heat dissipation tubes 200 are both arranged to extend in the up and down direction, and the two second heat dissipation tubes 200 are arranged side by side in the left and right direction. The lower ends of the second heat dissipation tubes 200 form the first ends 210, and the upper ends of the second heat dissipation tubes 200 form the second ends 220. The first ends 210 are connected to the connection section 110; a first vacuum cavity 101 is formed inside the first heat dissipation tube 100, a second vacuum cavity 201 is formed inside the second heat dissipation tube 200, the first vacuum cavity 101 is communicated with the second vacuum cavity 201, and a working fluid is contained in both the first vacuum cavity 101 and the second vacuum cavity 201. Capillary structures are provided on the cavity walls of both the first vacuum cavity 101 and the second vacuum cavity 201.

[0034] It should be noted that when the heat dissipation unit 10 of this embodiment is in use, the second end 220 of the second heat dissipation tube 200 can contact the structure to be heat-dissipated. The heat in the structure to be heat-dissipated is transferred to the second heat dissipation tube 200. The working fluid in the second vacuum cavity 201 absorbs heat and vaporizes, and then flows from the second vacuum cavity 201 into the first vacuum cavity 101. The vaporized working fluid releases heat and liquefies in the first vacuum cavity 101. The liquefied working fluid flows back near the second end 220 along the capillary structures on the cavity wall of the first vacuum cavity 101 and the cavity wall of the second vacuum cavity 201, and absorbs the heat transferred from the structure to be heat-dissipated again, thereby realizing heat dissipation for the structure to be heat-dissipated.

[0035] It can be understood that since a plurality of second heat dissipation tubes 200 are provided on the connection section 110 of the first heat dissipation tube 100, the heat in the structure to be dissipated can be transferred to the first heat dissipation tube 100 along the plurality of second heat dissipation tubes 200, so that the heat transfer efficiency of the entire heat dissipation unit 10 is faster and the heat dissipation effect is better.

[0036] It can be understood that since capillary structures are provided on the cavity walls of both the first vacuum cavity 101 and the second vacuum cavity 201, the working fluid that has liquefied and released heat in the first vacuum cavity 101 can automatically flow back to the vicinity of the second end 220 along the capillary structure.

[0037] In some embodiments of the present invention, the working fluid is one or a combination of water, ethanol, and acetone.

[0038] It can be understood that water, ethanol, and acetone have low acquisition costs and large specific heat capacities.

[0039] In some embodiments of the present invention, the first heat dissipation tube 100 further includes two heat conduction sections 120. The two heat conduction sections 120 are smoothly connected to the opposite ends of the connection section 110 respectively. The heat conduction section 120 extends along the second direction and is arranged side by side with the second heat dissipation tube 200. One end of the heat conduction section 120 away from the connection section 110 forms a contact end 121 for contacting the structure to be dissipated; the first vacuum cavity 101 includes a first sub-cavity 101a and a second sub-cavity 101b. The first sub-cavity 101a is formed in the connection section 110, and the second sub-cavity 101b is formed in the heat conduction section 120.

[0040] For example, as Figure 1 and Figure 2 shown, the first heat dissipation tube 100 further includes two heat conduction sections 120. The two heat conduction sections 120 both extend vertically. The lower ends of the two heat conduction sections 120 are respectively connected to the left and right ends of the connection section 110. The first vacuum cavity 101 includes a first sub-cavity 101a and two second sub-cavities 101b. The first sub-cavity 101a is located in the connection section 110, and the two second sub-cavities 101b are respectively located in the two heat conduction sections 120. Contact ends 121 are formed at the upper ends of the two heat conduction sections 120, and the contact ends 121 are used to contact the structure to be dissipated.

[0041] It should be noted that when the heat dissipation unit 10 of the present embodiment is working, the contact end 121 of the first heat dissipation pipe 100 and the second end 220 of the second heat dissipation pipe 200 can both be in contact with the structure to be heat dissipated. Thus, part of the heat in the structure to be heat dissipated is transferred to the connection section 110 of the first heat dissipation pipe 100 through the second heat dissipation pipe 200, and another part is transferred to the connection section 110 of the first heat dissipation pipe 100 through the heat conduction section 120 of the first heat dissipation pipe 100. Then, the heat is transferred from the connection section 110 of the first heat dissipation pipe 100 to the outside.

[0042] It can be understood that since the heat on the structure to be heat dissipated can be transferred simultaneously through the second heat dissipation pipe 200 and the heat conduction section 120, the heat dissipation efficiency of the heat dissipation unit 10 of the present application is further improved.

[0043] In some embodiments of the present utility model, the end face of the contact end 121 is an arc surface.

[0044] It can be understood that since the end face of the contact end 121 is an arc surface, when facing a structure to be heat dissipated with an uneven surface, the contact end 121 can still be in full contact with the surface of the structure to be heat dissipated, so as to improve the heat exchange efficiency between the contact end 121 and the structure to be heat dissipated.

[0045] Furthermore, referring to Figure 1 , from bottom to top, the cross-sectional dimension of the contact end 121 gradually decreases.

[0046] In some embodiments of the present utility model, the end face of the second end 220 is an arc surface.

[0047] It can be understood that since the end face of the second end 220 is an arc surface, when facing a structure to be heat dissipated with an uneven surface, the second end 220 can still be in full contact with the surface of the structure to be heat dissipated, so as to improve the heat exchange efficiency between the second end 220 and the structure to be heat dissipated.

[0048] Furthermore, referring to Figure 1 , from bottom to top, the cross-sectional dimension of the second end 220 gradually decreases.

[0049] In some embodiments of the present utility model, a connection plane 111 is formed on the surface of the connection section 110, and the first end 210 is welded to the connection plane 111.

[0050] For example, as Figure 1 shown, the upper end surface of the connection section 110 is the connection plane 111, and the first end 210 of the second heat dissipation pipe 200 is welded to the connection plane 111.

[0051] It can be understood that since the upper surface of the connecting section 110 is a plane, it is convenient for welding the first end 210 on the upper surface of the connecting section 110, thereby reducing the difficulty for workers to weld the second heat dissipation tube 200 to the first heat dissipation tube 100. At the same time, by welding the first end 210 of the second heat dissipation tube 200 to the connecting plane 111, the connection between the second heat dissipation tube 200 and the first heat dissipation tube 100 becomes more firm.

[0052] In some embodiments of the present utility model, both the first heat dissipation tube 100 and the second heat dissipation tube 200 are copper tubes.

[0053] It can be understood that copper has stable properties and good thermal conductivity.

[0054] Next, reference is made to Figure 3 to elaborate in detail on the heat dissipation module according to the second aspect embodiment of the present utility model.

[0055] According to the heat dissipation module provided by the second aspect embodiment of the present utility model, it includes a plurality of heat dissipation units 10 provided by the first aspect embodiment of the present utility model. The plurality of heat dissipation units 10 are spaced apart along a third direction, and the third direction is spaced at a certain angle from both the first direction and the second direction. Each first heat dissipation tube 100 of the heat dissipation module is sequentially distributed along the third direction, and any two second heat dissipation tubes 200 of the heat dissipation module are arranged side by side.

[0056] For example, as Figure 3 shown, the heat dissipation module includes four heat dissipation units 10, and the four heat dissipation units 10 are arranged side by side along the front-rear direction.

[0057] It should be noted that when the heat dissipation module of this embodiment is working, the second ends 220 of the respective second heat dissipation tubes 200 in the heat dissipation module can all be in contact with the structure to be heat-dissipated, so that the heat of the structure to be heat-dissipated can be transferred from each second heat dissipation tube 200 to the connecting section 110 of the first heat dissipation tube 100.

[0058] It can be understood that by providing a plurality of heat dissipation units 10, compared with a single heat dissipation unit 10, the heat dissipation effect of the heat dissipation module of the present application is better.

[0059] In a further embodiment of the present utility model, each first heat dissipation tube 100 of the heat dissipation module is sequentially welded and connected along the third direction.

[0060] For example, each first heat dissipation tube 100 of the heat dissipation module is sequentially arranged side by side along the front-rear direction, and any two adjacent first heat dissipation tubes 100 are welded and connected.

[0061] It can be understood that by welding and connecting any two adjacent first heat dissipation tubes 100, good heat transfer can also be achieved between the two adjacent first heat dissipation tubes 100. When the heat of the connecting section 110 of a certain first heat dissipation tube 100 is too much and difficult to be quickly transferred to the air, the heat in this first heat dissipation tube 100 can still be transferred to the adjacent first heat dissipation tube 100, so that the adjacent first heat dissipation tube 100 can assist this first heat dissipation tube 100 in heat transfer, thereby improving the heat dissipation effect of the heat dissipation module of the present application.

[0062] An electronic device according to a third aspect embodiment of the present invention includes the heat dissipation module according to a second aspect embodiment of the present invention.

[0063] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat dissipation unit, characterized in that, Comprising: A first heat dissipation tube, a first vacuum cavity is provided in the first heat dissipation tube, and the first heat dissipation tube includes a connection section extending along a first direction; A plurality of second heat dissipation tubes extending along a second direction, a second vacuum cavity is provided in the second heat dissipation tube, the second heat dissipation tubes are arranged at intervals along the first direction, the second heat dissipation tube includes opposite first and second ends, the first end is connected to the connection section, and the first heat dissipation tube and the second heat dissipation tube are integrally formed of the same material, the first vacuum cavity communicates with the second vacuum cavity, and a working fluid is accommodated in both the first vacuum cavity and the second vacuum cavity, and the second end is used to contact a structure to be dissipated; capillary structures are provided on the cavity walls of both the first vacuum cavity and the second vacuum cavity.

2. The heat dissipation unit according to claim 1, characterized in that, The working fluid is one or a combination of water, ethanol, and acetone.

3. A heat dissipation unit according to claim 1, characterized in that, The first heat dissipation tube further includes two heat conduction sections, the two heat conduction sections are smoothly connected to opposite ends of the connection section respectively, the heat conduction sections extend along the second direction and are arranged side by side with the second heat dissipation tubes, and the end of the heat conduction section away from the connection section forms a contact end for contacting the structure to be dissipated; the first vacuum cavity includes a first sub-cavity and a second sub-cavity, the first sub-cavity is formed in the connection section, and the second sub-cavity is formed in the heat conduction section.

4. A heat dissipation unit according to claim 3, wherein, The end face of the contact end is an arc surface.

5. A heat dissipation unit according to claim 1, characterized in that, The end face of the second end is an arc surface.

6. The heat dissipation unit according to claim 1, wherein A connection plane is formed on the surface of the connection section, and the first end is welded to the connection plane.

7. A heat dissipation unit according to any one of claims 1 to 6, characterized in that, Both the first heat dissipation tube and the second heat dissipation tube are copper tubes.

8. A heat dissipation module, characterized in that, Comprising a plurality of heat dissipation units as described in any one of claims 1 to 7, the plurality of heat dissipation units are distributed at intervals along a third direction, and the third direction is spaced at a certain angle from both the first direction and the second direction; the first heat dissipation tubes of each heat dissipation module are arranged in sequence along the third direction, and any two second heat dissipation tubes of the heat dissipation module are arranged side by side.

9. A heat dissipation module according to claim 8, wherein The first heat dissipation tubes of each heat dissipation module are welded and connected in sequence along the third direction.

10. An electronic device, characterized in that, Comprising a heat dissipation module as described in claim 8 or 9.

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