Three-dimensional radiator
By combining a three-dimensional heat sink structure with heat pipes and a vapor chamber, and utilizing L-shaped bent heat pipes and capillary structures, the problem of low heat transfer efficiency of heat pipe structures is solved, achieving faster and more uniform heat transfer, which is suitable for the heat dissipation needs of complex mechanisms.
Patent Information
- Application Number
- CN202422628714.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In existing technologies, heat pipe structures have small effective heat transfer area, large thermal resistance, low heat transfer efficiency, and poor compactness, which are particularly disadvantages in electronic devices that require efficient heat dissipation.
The three-dimensional heat sink structure combines heat pipes and vapor chambers. Through the design of L-shaped bent heat pipes and capillary structure, capillary channels and heat dissipation cavities are formed. Heat dissipation is achieved by the evaporation and flow of the working fluid, which enhances the uniformity and efficiency of heat transfer.
It achieves faster heat transfer and better heat dissipation, improves the uniformity and efficiency of heat transfer, and is compatible with complex mechanisms.
Smart Images
Figure CN223567938U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of radiator structure, specifically is a three -dimensional radiator. BACKGROUND
[0002] The heat dissipation technology of electronic components mainly has two categories of air cooling technology and liquid cooling technology at present. The air cooling technology includes natural convection air cooling technology and forced convection air cooling technology, and the natural convection air cooling technology is mainly used for the electronic device with small heat generation per unit volume, and the forced convection air cooling technology is generally used in combination with heat pipe technology, but there are problems such as small effective heat transfer area, large thermal resistance between the heat pipe and the radiator, low single heat transfer efficiency and poor compactness by using the heat pipe alone. SUMMARY
[0003] In view of the above problems, the utility model provides a three -dimensional radiator, which adopts the structure of heat pipe and uniform temperature plate combination, so that the heat dissipation transmission is faster.
[0004] A three -dimensional radiator, characterized in that it comprises:
[0005] A plurality of L-shaped bending heat pipes, each L-shaped bending heat pipe comprises a vertical part, a bending section and a horizontal part, and the inner wall of the inner cavity of the L-shaped bending heat pipe is provided with a capillary layer;
[0006] An upper cover;
[0007] A capillary structure comprising a bottom plate capillary structure and a plurality of upper convex support powder columns, and a plurality of upper convex support powder columns are arranged on the bottom plate capillary structure;
[0008] And a lower cover;
[0009] The upper cover is covered on the upper stop surface of the lower cover to form a heat dissipation cavity, and working fluid is arranged in the heat dissipation cavity, the bottom of the vertical part of the L-shaped bending heat pipe is inserted into the corresponding heat pipe insertion hole of the upper cover, and the bottom of the vertical part is supported on the upper surfaces of at least two upper convex support powder columns to form a capillary passage;
[0010] The horizontal part of the L-shaped bending heat pipe is arranged towards the periphery of the upper cover area.
[0011] Further characterized in that:
[0012] At least one row of heat pipe insertion holes is arranged on both sides of the length direction of the upper cover corresponding to the heat dissipation cavity, and the horizontal parts of all L-shaped bending heat pipes on the same side are arranged simultaneously and parallelly and towards the outside;
[0013] Preferably, the horizontal parts of the L-shaped bent heat pipe arranged on two sides are arranged back to back, and the horizontal parts on each side extend to the outside space of the upper cover, so 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, 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 an upper hole of the heat pipe insertion hole, so that the vertical part of the L-shaped bent heat pipe has sufficient insertion depth, and the L-shaped bent heat pipe is stably and reliably placed.
[0015] The bottom of the vertical part is provided with a ring of upper convex supporting powder columns, the upper convex supporting powder columns corresponding to the bottom of the vertical part are arranged in a ring shape, the inner wall of the bottom of the vertical part contacts the upper surface of each upper convex supporting powder column corresponding to the ring shape formed below, and the contact area is large.
[0016] After the heat is transmitted from the heat source to the lower cover, the working fluid is evaporated to form a gaseous state, the gaseous working fluid rises, part of the gaseous working fluid contacts the upper cover, and then condenses to form a capillary return along the capillary structure formed by the plurality of upper convex supporting powder columns and 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 to condense, and then the condensed working fluid returns along the capillary passage formed by the capillary layer of the pipe wall of the heat pipe, the corresponding upper convex supporting powder column closely arranged below the vertical part and the capillary structure of the bottom plate, and circulates back and forth; the whole structure dissipates heat through heat conduction and evaporation and flow of the working fluid; the structure combining the heat pipe and the uniform plate can make heat transmission of the heat generating element faster, the bottom of the heat pipe contacts the upper convex supporting powder column at the corresponding position, the exchange of the working fluid is more sufficient, and heat transmission is more uniform; compared with the previous single heat pipe structure or single uniform plate structure, the three-dimensional heat sink can transmit and exchange heat faster, and a better heat dissipation effect is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a perspective view structure schematic diagram of the utility model Figure 1 ;
[0018] Figure 2 It is a perspective view structure schematic diagram of the utility model Figure 2 (removing the upper cover);
[0019] Figure 3 It is a front view cross section structure schematic diagram of the utility model;
[0020] Figure 4 It is a side view cross section structure schematic diagram of the utility model;
[0021] Figure 5 It is Figure 4a local enlarged view of A in FIG. 1;
[0022] The names corresponding to the numbers in the figures are as follows:
[0023] L-shaped bent heat pipe 10, vertical portion 11, capillary layer 101, bent section 12, horizontal portion 13, upper cover 20, heat pipe insertion hole 21, upper convex guide sleeve 22, capillary structure 30, bottom plate capillary structure 31, upper convex support column 32, lower cover 40, upper stop surface 41, heat dissipation cavity 50. DETAILED DESCRIPTION
[0024] A three-dimensional heat sink, see Figures 1-5 which comprises 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 comprises a vertical portion 11, a bent section 12, and a horizontal portion 13, and the inner wall of the inner cavity of the L-shaped bent heat pipe 10 is provided with a capillary layer 101;
[0026] The capillary structure 30 comprises a bottom plate capillary structure 31 and a plurality of upper convex support columns 32, and the bottom plate capillary structure 31 is provided with a plurality of upper convex support columns 32;
[0027] The upper cover 20 is covered on the upper stop surface 41 of the lower cover 40 to form a heat dissipation cavity 50, and a working fluid (which is a mature technology and not shown in the figure) is arranged in the heat dissipation cavity 50, 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, and the bottom of the vertical portion 11 is supported on the upper surfaces of at least two upper convex support columns 32 to form a capillary passage;
[0028] The horizontal portion 13 of the L-shaped bent heat pipe 10 is arranged towards the periphery of the area of the upper cover 20.
[0029] In specific embodiments, one row of heat pipe insertion holes 21 is arranged on each of the lengthwise sides of the upper cover 20 corresponding to the heat dissipation cavity 50, and the number of heat pipe insertion holes 21 in each row is four. The horizontal portions 13 of the four L-shaped bent heat pipes 10 located on the same side are arranged in parallel and towards the outside. The horizontal portions 13 of the L-shaped bent heat pipes 10 located on the two sides are arranged in the opposite direction, and the horizontal portions 13 on each side extend to the outside space of the upper cover 20, ensuring that the heat dissipation space is reasonably expanded. The vertical portion 11 is reduced in height and the horizontal portion 13 is reasonably expanded, and the horizontal portion 13 can accept heat exchange from another direction of cold air, thereby expanding the heat dissipation space of the entire mechanism.
[0030] In specific embodiments,
[0031] The upper cover 20 is provided with an upper convex guide sleeve 22 corresponding to the periphery of the heat pipe insertion hole 21, and the vertical portion 11 is inserted into the heat pipe insertion hole 21 along the central hole of the upper convex guide sleeve 22, which is the upper hole of the heat pipe insertion hole 21, to ensure that the vertical portion 11 of the L-shaped bent heat pipe 10 has sufficient depth for insertion and stable and reliable placement of the L-shaped bent heat pipe 10.
[0032] In specific embodiments, the bottom of the vertical portion 11 is provided with a ring of upper convex support pillars 32, and the four upper convex support pillars 32 corresponding to the bottom of the vertical portion 11 are arranged in a ring shape, the inner wall of the bottom of the vertical portion 11 contacts the upper surface of the four upper convex support pillars 32 forming a ring shape below it, to ensure a larger contact area for capillary communication.
[0033] The working principle is as follows: heat is transferred from the heat source to the lower cover, the working fluid is evaporated to form a gas state, the gaseous working fluid rises, part of it contacts the upper cover, then condenses along the capillary return formed by the capillary structure of the upper convex support pillars and the bottom plate, and circulates; 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, then the condensed working fluid returns along the capillary layer of the pipe wall, the corresponding upper convex support pillars close to the bottom of the vertical portion, and the capillary passage formed by the capillary structure of the bottom plate, and circulates; the entire structure dissipates heat through heat conduction and evaporation and flow of the working fluid; the structure combining the heat pipe and the uniform plate can make the heat transfer of the heat generating element faster, which makes the bottom of the heat pipe contact with the corresponding upper convex support pillars, making the exchange of working fluid more sufficient and the heat transfer more uniform; compared with the previous single heat pipe structure or single uniform plate structure, the three-dimensional heat sink can transfer and exchange heat more quickly, achieving better heat dissipation effect.
[0034] The three-dimensional uniform plate improves the heat transfer efficiency, can reduce or increase the feature L-shaped bent heat pipe at any position, and has good compatibility with the height and length of the L-shaped bent heat pipe; the heat conduction mode is three-dimensional planar multidirectional conduction, which has small limitation and high efficiency; the upper cover and the lower cover can use corrosion-resistant materials to provide higher efficient heat conduction performance, reliability and service life without surface treatment.
[0035] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.
[0036] Furthermore, it should be understood that although the description is made according to the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and the skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that can be understood by the skilled in the art.
Claims
1. A three-dimensional heat spreader, comprising: It comprises: a plurality of L-shaped bending heat pipes, each of which comprises a vertical portion, a bending section and a horizontal portion, and the inner wall of the inner cavity of the L-shaped bending heat pipe is provided with a capillary layer; an upper cover; a capillary structure comprising a bottom plate capillary structure and a plurality of upper convex support powder columns, and a plurality of upper convex support powder columns are arranged on the bottom plate capillary structure; and a lower cover; the upper cover is covered on the upper stop surface of the lower cover to form a heat dissipation cavity, working liquid is arranged in the heat dissipation cavity, the bottom of the vertical portion of the L-shaped bending 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 the upper surfaces of at least two upper convex support powder columns to form a capillary passage; the horizontal portion of the L-shaped bending heat pipe is arranged towards the periphery of the area of the upper cover.
2. The three-dimensional heat spreader of claim 1, wherein: At least one row of heat pipe insertion holes is arranged on both sides of the length direction of the upper cover corresponding to the heat dissipation cavity, the horizontal portions of all L-shaped bending heat pipes on the same side are arranged in parallel at the same time and towards the outside.
3. A three-dimensional heat spreader as claimed in claim 2, wherein: The horizontal portions of the L-shaped bending heat pipes on both sides are arranged back to back, and the horizontal portions on each side extend to the outside space of the upper cover.
4. The three-dimensional heat spreader of claim 1, wherein: The upper cover is provided with an upper convex guide sleeve corresponding to the periphery of the heat pipe insertion hole, the vertical portion 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.
5. The three-dimensional heat spreader of claim 1, wherein: The bottom of the vertical portion is provided with a ring of upper convex support powder columns, and the upper convex support powder columns corresponding to the bottom of the vertical portion are arranged in a spaced annular shape, and the inner wall of the bottom of the vertical portion contacts the upper surface of each upper convex support powder column arranged in an annular shape below it.