Three-dimensional radiator
By combining the three-dimensional radiator structure of heat pipe and temperature uniform plate, the L-shaped bent heat pipe and capillary structure is used to solve the problem of low heat transfer efficiency of heat pipes, achieving faster and even heat transfer, and improving heat dissipation efficiency.
Patent Information
- Application Number
- CN202411526785.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-13
AI Technical Summary
In the existing air cooling technology, the heat pipe has problems such as small effective heat transfer area, large thermal resistance, low heat transfer efficiency of a single root and poor compactness performance.
A three-dimensional radiator structure combining heat pipes and temperature uniform plates is adopted to form a heat dissipation cavity and capillary path through the L-shaped bent heat pipes and capillary structure, and heat transfer is carried out by the transpiration and flow of the working fluid.
It realizes faster and more uniform heat transfer, and improves heat dissipation efficiency. Compared with a single heat pipe or a uniform temperature plate structure, the three-dimensional radiator can perform heat transfer and exchange more quickly, achieving better heat dissipation effect.
Smart Images
Figure CN119136514A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of radiator structures, in particular to a three-dimensional radiator. Background Art
[0002] At present, there are two main types of heat dissipation technologies for electronic components: air cooling technology and liquid cooling technology. Air cooling technology includes natural convection air cooling technology and forced convection air cooling technology. Natural convection air cooling technology is mainly used for electronic devices with low heat generation per unit volume. Forced convection air cooling technology is generally used in combination with heat pipe technology. However, if only heat pipes are used, there are problems such as small effective heat transfer area, large thermal resistance between the heat sink and the heat sink, low heat transfer efficiency of a single pipe, and poor compact performance. Summary of the invention
[0003] In view of the above problems, the present invention provides a three-dimensional heat sink, which adopts a structure combining a heat pipe and a temperature homogenizing plate to make heat dissipation transmission faster.
[0004] A three-dimensional heat sink, characterized in that it comprises:
[0005] A plurality of L-shaped bent heat pipes, each of which comprises a vertical portion, a bent section, and a horizontal portion, and an inner wall of an inner cavity of the L-shaped bent heat pipe is provided with a capillary layer;
[0006] Upper cover;
[0007] The capillary structure comprises a bottom plate capillary structure and a plurality of upward convex supporting powder columns, wherein the bottom plate capillary structure is provided with a plurality of upward convex supporting powder columns;
[0008] and the lower cover;
[0009] The upper cover is mounted on the upper stopper surface of the lower cover to form a heat dissipation cavity, in which a working fluid is arranged, and the bottom of the vertical portion of the L-shaped bent heat pipe is inserted into the corresponding heat pipe insertion hole of the upper cover, and the bottom of the vertical portion is supported on at least the upper surfaces of the two upper convex supporting powder columns to form a capillary passage;
[0010] The horizontal portion of the L-shaped bent heat pipe is arranged toward the periphery of the upper cover surface area.
[0011] It is further characterized by:
[0012] At least one row of heat pipe insertion holes are respectively arranged on both sides of the upper cover corresponding to the length direction of the heat dissipation cavity, and the horizontal parts of all L-shaped bent heat pipes on the same side are arranged in parallel and facing outwards;
[0013] Preferably, the horizontal parts of the L-shaped bent heat pipes on both sides are arranged back to back, and the horizontal part of each side extends to the outer space of the upper cover to ensure that the heat dissipation space is reasonably expanded;
[0014] The upper cover is provided with an upper convex guide sleeve corresponding to the periphery of the heat pipe insertion hole, and the vertical part is inserted into the heat pipe insertion hole along the center hole of the upper convex guide sleeve, and the center hole is the upper hole of the heat pipe insertion hole, so as to ensure that the vertical part of the L-shaped bent heat pipe has a sufficient insertion depth, and ensure the stable and reliable placement of the L-shaped bent heat pipe;
[0015] A circle of upward convex supporting powder columns is arranged at the bottom of the vertical part, and the upward convex supporting powder columns corresponding to the bottom of the vertical part form a ring-shaped arrangement at intervals. The inner wall of the bottom of the vertical part contacts the upper surface of each upward convex supporting powder column corresponding to the ring formed therebelow, ensuring the formation of capillary connection with a large contact area.
[0016] After adopting the technology of the present invention, heat is transferred from the heat source to the lower cover, the working fluid evaporates under the heat to form a gas, the gaseous working fluid rises, a part of it contacts the upper cover, and then condenses and refluxes along the capillary formed by a plurality of convex supporting powder columns and the capillary structure of the bottom plate, and circulates back and forth; another part of the gaseous working fluid enters the inner cavity of the heat pipe, contacts the pipe wall of the heat pipe and condenses, and then the condensed working fluid refluxes along the capillary layer of the pipe wall of the heat pipe, the corresponding convex supporting powder columns closely attached to the bottom of the vertical part, and the capillary path formed by the capillary structure of the bottom plate, and circulates back and forth; the whole structure dissipates heat through heat conduction and the evaporation and flow of the working fluid; the structure combining the heat pipe and the temperature averaging plate can make the heat transfer of the heating element faster, which makes the bottom of the heat pipe contact with the convex supporting powder columns at the corresponding position, so that the working fluid exchange is more sufficient and the heat transfer is more uniform; compared with the previous single heat pipe structure or the single temperature averaging plate structure, the three-dimensional radiator can transfer and exchange heat more quickly and achieve a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The three-dimensional structure diagram of the present invention is shown in FIG. Figure 1 ;
[0018] Figure 2 The three-dimensional structure diagram of the present invention is shown in FIG. Figure 2 (Remove the top cover);
[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the front view of the present invention;
[0020] Figure 4 It is a side view cross-sectional structural schematic diagram of the present invention;
[0021] Figure 5 for Figure 4 A local enlarged schematic diagram of point A;
[0022] The names corresponding to the serial numbers in the figure are as follows:
[0023] L-shaped bent heat pipe 10, vertical part 11, capillary layer 101, bent section 12, horizontal part 13, upper cover 20, heat pipe insertion hole 21, upper convex guide sleeve 22, capillary structure 30, bottom plate capillary structure 31, upper convex supporting powder column 32, lower cover 40, upper stop surface 41, heat dissipation cavity 50. DETAILED DESCRIPTION
[0024] A three-dimensional heat sink, see Figure 1-Figure 5 , which includes a plurality of L-shaped bent heat pipes 10, an upper cover 20, a capillary structure 30, and a lower cover 40;
[0025] Each L-shaped bent heat pipe 10 includes a vertical portion 11, a bent section 12, and a horizontal portion 13. The inner wall of the inner cavity of the L-shaped bent pipe 10 is provided with a capillary layer 101;
[0026] The capillary structure 30 includes a bottom plate capillary structure 31 and a plurality of upward convex supporting powder columns 32. The bottom plate capillary structure 31 is provided with a plurality of upward convex supporting powder columns 32.
[0027] The upper cover 20 is mounted on the upper stopper surface 41 of the lower cover 40 to form a heat dissipation cavity 50. The heat dissipation cavity 50 is provided with a working fluid (which is an existing mature technology and is not shown in the figure). The bottom of the vertical portion 11 of the L-shaped bent heat pipe 10 is inserted into the corresponding heat pipe insertion hole 21 of the upper cover 20. The bottom of the vertical portion 11 is supported on at least the upper surfaces of two upward convex supporting powder columns 32 to form a capillary passage.
[0028] The horizontal portion 13 of the L-shaped bent heat pipe 10 is arranged toward the periphery of the surface area of the upper cover 20 .
[0029] In a specific embodiment, a row of heat pipe insertion holes 21 are respectively provided on both sides of the upper cover 20 corresponding to the length direction of the heat dissipation cavity 50, and the number of heat pipe insertion holes 21 in each row is four. The horizontal parts 13 of the four L-shaped bent heat pipes 10 on the same side are arranged in parallel and arranged toward the outside; the horizontal parts 13 of the L-shaped bent heat pipes 10 on both sides are arranged back to back, and the horizontal parts 13 on each side extend to the outer space of the upper cover 20 to ensure that the heat dissipation space is reasonably expanded. The vertical part 11 is reduced according to the height of the heat dissipation space, and the horizontal part 13 is reasonably expanded. The horizontal part 13 can accept heat exchange from cold air in another direction, thereby expanding the heat dissipation space of the entire mechanism.
[0030] In a specific embodiment,
[0031] The upper cover 20 is provided with an upward convex guide sleeve 22 corresponding to the periphery of the heat pipe insertion hole 21. The vertical portion 11 is inserted into the heat pipe insertion hole 21 along the center hole of the upward convex guide sleeve 22. The center hole is the upper hole of the heat pipe insertion hole 21, ensuring that the vertical portion 11 of the L-shaped bent heat pipe 10 has a sufficient insertion depth, ensuring that the L-shaped bent heat pipe 10 is stably and reliably placed.
[0032] In a specific embodiment, a circle of upward convex supporting powder columns 32 is provided at the bottom of the vertical portion 11, and the four upward convex supporting powder columns 32 at the bottom of the vertical portion 11 form a ring arranged at intervals. The inner wall of the bottom of the vertical portion 11 contacts the upper surface of the four upward convex supporting powder columns 32 corresponding to the ring formed below it, ensuring the formation of capillary connection with a large contact area.
[0033] Its working principle is as follows: heat is transferred from the heat source to the lower cover, the working fluid evaporates under the heat to form a gas, the gaseous working fluid rises, a part of it contacts the upper cover, and then condenses and refluxes along the capillary formed by a number of convex supporting powder columns and the capillary structure of the bottom plate, and circulates back and forth; another part of the gaseous working fluid enters the inner cavity of the heat pipe, contacts the tube wall of the heat pipe and condenses, and then the condensed working fluid refluxes along the capillary layer of the tube wall inside the tube, the corresponding convex supporting powder columns tightly attached to the bottom of the vertical part, and the capillary path formed by the capillary structure of the bottom plate, and circulates back and forth; the whole structure dissipates heat through heat conduction and the evaporation and flow of the working fluid; the structure combining the heat pipe and the temperature averaging plate can make the heat transfer of the heating element faster, which makes the bottom of the heat pipe contact with the convex supporting powder columns at the corresponding position, so that the working fluid exchange is more sufficient and the heat transfer is more uniform; compared with the previous single heat pipe structure or the single temperature averaging plate structure, the three-dimensional radiator can transfer and exchange heat more quickly and achieve better heat dissipation effect.
[0034] The three-dimensional temperature plate improves the heat transfer efficiency. It can reduce or increase the characteristic L-shaped bent heat exchange tube, as well as the height and length of the L-shaped bent heat exchange tube at any position, and has good compatibility with complex structures. The heat conduction method is three-dimensional plane multi-directional conduction, which has small limitations and high efficiency. The upper cover and the lower cover can be made of corrosion-resistant materials, providing more efficient heat conduction performance, reliability and life without surface treatment.
[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A three-dimensional heat sink, characterized in that: It includes: A plurality of L-shaped bent heat pipes, each of which comprises a vertical portion, a bent section, and a horizontal portion, and an inner wall of an inner cavity of the L-shaped bent heat pipe is provided with a capillary layer; Upper cover; The capillary structure comprises a bottom plate capillary structure and a plurality of upward convex supporting powder columns, wherein the bottom plate capillary structure is provided with a plurality of upward convex supporting powder columns; and the lower cover; The upper cover is mounted on the upper stopper surface of the lower cover to form a heat dissipation cavity, in which a working fluid is arranged, and the bottom of the vertical portion of the L-shaped bent heat pipe is inserted into the corresponding heat pipe insertion hole of the upper cover, and the bottom of the vertical portion is supported on at least the upper surfaces of the two upper convex supporting powder columns to form a capillary passage; The horizontal portion of the L-shaped bent heat pipe is arranged toward the periphery of the upper cover surface area.
2. A three-dimensional heat sink according to claim 1, characterized in that: At least one row of heat pipe insertion holes are respectively arranged on both sides of the upper cover corresponding to the length direction of the heat dissipation cavity, and the horizontal parts of all L-shaped bent heat pipes on the same side are arranged in parallel and facing outwards.
3. A three-dimensional heat sink according to claim 2, characterized in that: The horizontal parts of the L-shaped bent heat pipes on both sides are arranged back to back, and the horizontal part on each side extends to the outer space of the upper cover.
4. A three-dimensional heat sink according to claim 1, characterized in that: The upper cover is provided with an upper convex guide sleeve at the periphery corresponding to the heat pipe insertion hole, and the vertical part is inserted into the heat pipe insertion hole along the central hole of the upper convex guide sleeve, and the central hole is the upper hole of the heat pipe insertion hole.
5. A three-dimensional heat sink according to claim 1, characterized in that: The bottom of the vertical part is provided with a circle of convex supporting powder columns, which form a ring-shaped arrangement corresponding to the convex supporting powder columns at the bottom of the vertical part. The bottom inner wall of the vertical part contacts the upper surface of each convex supporting powder column forming a ring below it.