3D integrated micro inner cavity curved surface flow channel metal heat dissipation structure
By using 3D integrated processing technology in the micro metal cavity flow channel to transform arc transition corners, the large flow resistance and liquid retention problems caused by L-shaped corners are solved, the heat dissipation effect is improved and the processing cost is reduced, and more efficient heat dissipation effect is achieved .
Patent Information
- Application Number
- CN202421067949.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The L-shaped corners of the existing micro-metal cavity flow channel lead to large flow resistance and liquid retention, affecting the heat dissipation effect.
Using 3D integrated processing technology, the corner sections of the micro cavity flow channel are transformed into arc-shaped transition structures to reduce fluid resistance and increase flow velocity.
Improves heat dissipation effect, reduces processing costs, and makes mass production possible.
Smart Images
Figure CN222338280U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat dissipation, in particular to a 3D integrated micro-cavity curved surface flow channel metal heat dissipation structure. Background Art
[0002] With the rapid development of science and technology such as microelectronics technology, large integrated circuits, and high-speed computers, high power, high integration, and miniaturization have become the main development trends of electronic devices. The integrated components of microelectronic chips increase at a rate of 40% to 50% each year, especially in some cutting-edge technology fields such as microelectronic chips for high-power radars, where the transient heat flux density is as high as 107W / m2. If the chip cannot be dissipated in a timely and effective manner, the heat accumulation will cause the chip performance to decline, the life span to be reduced, and even the device to burn out. According to statistics, more than 55% of the failures of microelectronic chips are caused by heat dissipation problems, and the working environment temperature of the device is at the level of 70-80℃. For every 1℃ increase, the reliability decreases by 5%. Therefore, the heat dissipation problem of high heat flux micro devices and equipment seriously restricts the development of high-tech, and is increasingly valued by the international heat transfer community and related industrial fields.
[0003] At present, the micro coolers that scholars at home and abroad are actively studying include: micro channel radiator, which is considered to be one of the effective ways to solve the heat dissipation problem of high heat flux density micro equipment due to its large specific surface area, high heat transfer intensity per unit area, light weight, small size, and can be directly integrated on the heat dissipation chip to avoid thermal stress matching problems. It has received great attention and extensive research from scholars at home and abroad.
[0004] The applicant has discovered that the prior art has at least the following technical problems: Due to the small size of the inner cavity flow channel, it can only be formed by tool processing, resulting in a right-angle turn at the corner, forming an L-shaped curved flow channel with a large flow resistance, causing the liquid to generate vortices at the right angles, and part of the liquid is retained at the L-shaped corner, which increases the flow resistance, affects the flow rate, and affects the heat exchange effect. Utility Model Content
[0005] The purpose of the utility model is to provide a 3D integrated micro-cavity curved flow channel metal heat dissipation structure to solve the technical problems existing in the prior art of micro-metal cavity flow channel L-shaped corners, large flow resistance, easy retention, and general heat exchange effect.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] The utility model provides a 3D integrated micro-cavity curved flow channel metal heat dissipation structure, comprising a base, a water inlet section, a water outlet section, and a micro-cavity curved flow channel; wherein:
[0008] The water inlet section and the water outlet section are respectively arranged on two adjacent side surfaces of the base at an angle of 90 degrees;
[0009] The micro inner cavity curved surface flow channel is arranged along the water inlet section, the base and the water outlet section;
[0010] The micro-cavity curved flow channel located in the base has a corner section, and the corner section is an arc-shaped transition structure.
[0011] Furthermore, the base, the water inlet section, the water outlet section and the micro-cavity curved surface flow channel are formed by 3D integrated processing.
[0012] Furthermore, the metal heat dissipation structure is made of stainless steel or copper.
[0013] Furthermore, the diameter of the micro-cavity curved flow channel is 2-4 mm.
[0014] Furthermore, the angle range corresponding to the corner segment is 45-95°.
[0015] Furthermore, the end of the water inlet section has a water inlet, and the end of the water outlet section has a water outlet.
[0016] Furthermore, the base has a height of 12.6 mm, a width of 10.2 mm, and a thickness of 10.1 mm.
[0017] Furthermore, drum-shaped parts are evenly arranged on the outer surface of the water inlet section, and the diameter of the drum-shaped parts is 8-10 mm; the outer diameter of the water inlet section is 5-7 mm; and the interval between adjacent drum-shaped parts is 1.5 mm.
[0018] Furthermore, the outer surface of the water outlet section is a corrugated tube structure with a plurality of wave rings; the outer diameter of the water outlet section is 7-9 mm; the diameter of the wave ring is 9-11 mm; and the interval between two adjacent wave rings is 1.8 mm.
[0019] The 3D integrated micro-inner cavity curved surface flow channel metal heat dissipation structure provided by the utility model adopts 3D integrated processing and molding. By changing the corner section of the micro-metal inner cavity curved surface flow channel from an L-shaped right-angle turn to an arc-shaped transition turn, the flow rate is increased, the liquid retention in the bend is reduced, and the heat dissipation effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model 3D integrated micro-cavity curved flow channel metal heat dissipation structure;
[0022] Figure 2 It is a cross-sectional view of the utility model's 3D integrated micro-cavity curved flow channel metal heat dissipation structure.
[0023] In the figure, 1 is the base; 2 is the water inlet section; 3 is the water outlet section; 4 is the water inlet; 5 is the water outlet; 6 is the corner section; 7 is the micro-cavity curved flow channel. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0025] In the prior art, the metal heat dissipation structure of the micro-cavity curved flow channel cannot be integrally processed and formed with the body and the inner cavity due to the very small inner cavity flow channel and the small overall size, and can only rely on the fine processing method to use a tool to process and form the inner cavity flow channel. The processed heat dissipation structure in the prior art is not only complicated in process, difficult to process, and cannot be mass-produced, resulting in high processing costs, but also the corners of the curved flow channel can only be right-angle transitions, that is, L-shaped transitions. In fluid mechanics, vortices are easily generated at the L-shaped corners, which causes fluid accumulation and retention, resulting in a decrease in fluid circulation speed and a decrease in heat dissipation effect. In order to solve this problem, the applicant has developed a method for integrally processing and forming a metal heat dissipation structure using an injection mold after a large number of experiments. The heat dissipation structure processed by this method can not only be integrally processed and formed, but also the corners of the curved flow channel can be processed into arc-shaped transitions, which reduces fluid resistance, does not have fluid retention, and improves heat dissipation effect. Moreover, compared with the processing methods of the prior art, it is easy to process and can be mass-produced, greatly reducing processing costs.
[0026] like Figure 1 and Figure 2 As shown, specifically, in this embodiment, a 3D integrated micro-cavity curved flow channel metal heat dissipation structure is provided, including a base 1, a water inlet section 2, a water outlet section 3, and a micro-cavity curved flow channel 7; wherein:
[0027] The water inlet section 2 and the water outlet section 3 are respectively arranged on two adjacent side surfaces of the base 1 at an angle of 90 degrees;
[0028] The micro inner cavity curved surface flow channel 7 is arranged through the water inlet section 2, the base 1 and the water outlet section 3;
[0029] The micro-inner cavity curved flow channel 7 located in the base 1 has a corner section 6, and the corner section 6 is an arc-shaped transition structure.
[0030] The 3D integrated micro-inner cavity curved surface flow channel metal heat dissipation structure provided by the utility model adopts 3D integrated processing and molding. By changing the corner section of the micro-metal inner cavity curved surface flow channel from an L-shaped right-angle turn to an arc-shaped transition turn, the flow rate is increased, the liquid retention in the bend is reduced, and the heat dissipation effect is improved.
[0031] Furthermore, the base 1, the water inlet section 2, the water outlet section 3 and the micro-cavity curved surface flow channel 7 are formed by 3D integrated processing.
[0032] It should be noted here that the one-piece processing mentioned this time is carried out using an injection mold, which has been successfully verified after a large number of tests. Currently, this product has been mass-produced and put into use by us.
[0033] Furthermore, the metal heat dissipation structure is made of stainless steel or copper.
[0034] Furthermore, the diameter of the micro-inner cavity curved flow channel 7 is 2-4 mm.
[0035] The diameter of the micro-inner cavity curved surface flow channel 7 can be adjusted as needed, and flow channels with different diameters can also be set in the entire micro-inner cavity curved surface flow channel 7, so as to control the liquid flow rate by adjusting the hole size.
[0036] Furthermore, the angle range corresponding to the corner section 6 is 45-95°. It should be noted here that the angle of the corner section 6 can be adjusted as needed.
[0037] Furthermore, the end of the water inlet section 2 has a water inlet 4 , and the end of the water outlet section 3 has a water outlet 5 .
[0038] Furthermore, the base 1 has a height of 12.6 mm, a width of 10.2 mm, and a thickness of 10.1 mm.
[0039] Furthermore, drum-shaped parts are evenly arranged on the outer surface of the water inlet section 2, and the diameter of the drum-shaped parts is 8-10 mm; the outer diameter of the water inlet section is 5-7 mm; and the interval between adjacent drum-shaped parts is 1.5 mm.
[0040] Furthermore, the outer surface of the water outlet section 3 is a corrugated tube structure with multiple wave rings; the outer diameter of the water outlet section 3 is 7-9 mm; the diameter of the wave ring is 9-11 mm; and the interval between two adjacent wave rings is 1.8 mm.
[0041] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.
[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A 3D integrated micro-cavity curved channel metal heat dissipation structure, characterized in that: It includes a base, a water inlet section, a water outlet section, and a micro-cavity curved flow channel; wherein: The water inlet section and the water outlet section are respectively arranged on two adjacent side surfaces of the base at an angle of 90 degrees; The micro inner cavity curved surface flow channel is arranged through the water inlet section, the base and the water outlet section; The micro-inner cavity curved surface flow channel located in the base has a corner section, and the corner section is an arc-shaped transition structure; the base, the water inlet section, the water outlet section and the micro-inner cavity curved surface flow channel are formed by 3D integrated processing; The outer surface of the water inlet section is evenly provided with drum-shaped parts; The outer surface of the water outlet section is a corrugated tube structure with a plurality of wave rings.
2. The 3D integrated micro-cavity curved channel metal heat dissipation structure according to claim 1, characterized in that: The metal heat dissipation structure is made of stainless steel or copper.
3. The 3D integrated micro-cavity curved channel metal heat dissipation structure according to claim 1, characterized in that: The end of the water inlet section is provided with a water inlet, and the end of the water outlet section is provided with a water outlet.