Flat heat pipe heating radiator with double-sided fin radiating fins
By designing a flat heat pipe structure with double-sided fin fins in the heat pipe radiator, the problem of thermal resistance between the heat pipe and the fin is solved, which significantly improves the heat dissipation efficiency and has the advantages of simple structure and low cost.
Patent Information
- Application Number
- CN202421933748.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-09
AI Technical Summary
When existing heat pipe radiators are combined with heat pipes and heat sinks, gap thermal resistance is prone to occur, affecting heat dissipation efficiency.
Design a flat-panel heat pipe heating radiator with double-sided fin fins. Through reasonable flat-panel heat pipe structure arrangement and wing heat pipe structure thickness design, the bonding or welding process is reduced, and the close integration of the heat pipe and the heat pipe are achieved.
It effectively solves the gap thermal resistance problem between the heat pipe and the heat sink, improves the overall heat dissipation efficiency of the heat pipe heating radiator, and has a simple structure and low cost, with broad promotion and application prospects.
Smart Images
Figure CN222881278U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat pipe heating and heat dissipation, in particular to a flat heat pipe heating radiator with double-sided fin heat sinks. Background Art
[0002] Heat pipe radiator is a new generation of heat dissipation products that uses heat pipe technology to make significant improvements on traditional radiators or heat exchangers. Heat pipe radiators are usually composed of sealed tubes, wicks and steam channels. The wick surrounds the wall of the sealed tube and is soaked in a saturated liquid that can volatilize. This saturated liquid can be distilled water, ammonia, methanol or acetone.
[0003] When the heat pipe radiator is in operation, its evaporation section absorbs the heat generated by the heat source (such as power semiconductor devices, etc.), causing the liquid in the liquid wick tube to boil and turn into steam. The steam with heat moves from the evaporation section of the heat pipe radiator to the cooling section. When the steam transfers the heat to the cooling section, the steam condenses into liquid. The condensed liquid returns to the evaporation section through the capillary action of the liquid wick on the tube wall, and the above cycle is repeated to continuously dissipate heat.
[0004] Due to the high thermal conductivity and unique heat dissipation characteristics of the heat pipe radiator, the temperature distribution along the axial direction between its evaporation section and cooling section is uniform and basically equal, so the heat dissipation efficiency is very high. At present, heat pipe heat dissipation technology has been widely used in many fields such as aerospace, computers, electronic appliances, etc., and has achieved good heat dissipation effects.
[0005] A heat pipe radiator needs to combine a heat pipe and a heat sink together to work. However, when the heat pipe and the heat sink are combined and assembled in the existing heat pipe radiator, no matter whether it is a bonding process or a welding process, there will be a gap between the heat pipe and the heat sink, thereby generating a large thermal resistance, affecting the overall heat dissipation effect, and causing the heat pipe heat dissipation efficiency to decrease.
[0006] Therefore, there is an urgent need to develop and design a heat pipe radiator structure with a more reasonable structure, more optimized process, and more efficient heat dissipation to ensure the overall heat dissipation effect of the heat pipe radiator, thereby solving the above-mentioned shortcomings and difficulties of the prior art. Utility Model Content
[0007] In view of this, the purpose of the utility model is to improve the structure of the traditional heat pipe radiator and design a flat-plate heat pipe heating radiator with double-sided fin heat sinks. Through the reasonable arrangement and layout design of the flat-plate heat pipe structure, the bonding or welding process is reduced. Through the reasonable design of the thickness of the fin heat sink structure, the molding and assembly process are made simpler and easier, so as to improve the stability and safety and reliability of the structural combination assembly process, solve the difficult problem of the gap thermal resistance between the existing flat-plate heat pipe and the heat sink, and improve the overall heat dissipation efficiency of the heat pipe heating radiator. The utility model has the advantages of simple structure, low cost, energy saving and environmental protection, so as to facilitate popularization and application.
[0008] The utility model provides a flat heat pipe heating radiator with double-sided finned fins, comprising: a plurality of heat pipes, a connecting pipe, and finned fins; the plurality of heat pipes are evenly arranged at equal intervals along the length direction of the connecting pipe; each of the heat pipes is fixedly connected to the connecting pipe along the large plane direction of the connecting pipe;
[0009] The connecting pipe acts as a frame connection for the multiple heat pipes, connecting the multiple heat pipes into a heat pipe assembly as a whole; the heat pipes are evenly arranged at equal intervals so that the heat generated by the heat-generating components can be evenly transferred and dissipated, avoiding uneven heat dissipation and poor local heat dissipation effects.
[0010] The fin heat sink is fixedly arranged on the outer wall side of the heat pipe, the fin heat sink and the outer wall of the heat pipe are formed by one-time extrusion, and there is no gap between the fin heat sink and the heat pipe.
[0011] The utility model adopts an integrally formed structure of a heat pipe with finned radiator, does not use bonding or welding technology, strengthens the heat transfer capacity of the heat pipe radiator, and realizes small temperature difference heat transfer and high-efficiency heat exchange to the greatest extent.
[0012] Furthermore, the overall structural type of the flat plate heat pipe heating radiator with double-sided fins includes: a double-fin type (such as Figure 1 As shown), multi-fin type (such as Figure 2 As shown), double-sided arc type (as shown Figure 3 As shown), double angle type (as shown Figure 4 As shown), single-sided arc type (as shown Figure 5 As shown), single angle type (such as Figure 6 As shown), flat plate type (see Figure 7 Any one of the ones shown).
[0013] Furthermore, when the overall structural type of the flat-plate heat pipe heating radiator with double-sided fin heat sink is any one of the double-fin type, multi-fin type, double-sided arc type, and double-angle type, each of the fin heat sinks is symmetrically arranged on both sides of the heat pipe with the center line of the length direction of the connecting tube as the axis of symmetry.
[0014] Furthermore, the connecting pipe is an aluminum alloy profile, and the shape of the connecting pipe is conformally designed and formed according to the outer contour of the heat-generating component.
[0015] The flat plate heat pipe heating radiator with double-sided fins of the utility model is installed on the outside of the heating component when in use. According to the heat dissipation required by the heating component, the flat plate heat pipe heating radiator with double-sided fins can be installed on one side or both sides of the outside of the heating component.
[0016] Furthermore, both ends of the heat pipe are sealed and welded after evacuation.
[0017] The heat pipe of the utility model has a fully enclosed structure, and the liquid phase-change working medium in the internal cavity will not leak out or volatilize, which effectively ensures the sealing performance and safety and reliability of the heat pipe.
[0018] Furthermore, the heat pipe has a plurality of tubular cavities evenly distributed inside, and the tubular cavities are filled with a saturated liquid phase change medium. The saturated liquid has excellent phase change characteristics, so that the heat pipe has unique heat dissipation performance. Preferably, the heat pipe adopts an aluminum alloy integral stretch forming structure.
[0019] Furthermore, a plurality of arc-shaped protrusions are provided on the surface of the tubular cavity, and the protrusion angle of the arc-shaped protrusions is greater than the evaporation wetting angle of the phase change medium. The arc-shaped protrusions enhance the fluidity of the phase change medium in the heat pipe and improve the heat conduction capacity of the phase change medium.
[0020] Furthermore, the cross section of the heat pipe is circular or rectangular with rounded corners. The circular cross section has better structural strength. The heat pipe with a rectangular cross section with rounded corners can easily fit with a plane, thereby expanding the heat transfer area with the heat-generating component and is widely used.
[0021] Furthermore, the phase change working fluid includes any one of ammonia, methanol, and acetone. The heat pipe radiator filled with liquids such as ammonia, methanol, and acetone still has good heat dissipation capacity at low temperatures.
[0022] Furthermore, the thickness of the fin heat sink is 1 / 8-1 / 5 of the outer width of the heat pipe. The reasonable thickness design of the fin heat sink facilitates the one-piece extrusion or stretching processing to reduce the process cost.
[0023] Furthermore, in the overall structure of the flat-plate heat pipe heating radiator with double-sided fins, the coverage width of the heat pipe is ≥ 3 times the width of the connecting pipe.
[0024] The utility model designs the covering width of the heat pipe in the overall heat dissipation structure, enhances the rationality of the heat conduction path of the structure, and improves the heat transfer rate and the heat dissipation efficiency.
[0025] Compared with the prior art, the utility model has the following beneficial effects on the culvert structure for reinforcing the roadbed bottom:
[0026] The flat-plate heat pipe heating radiator with double-sided finned fins provided by the utility model optimizes and improves the structure of the traditional heat pipe radiator, enhances the structural rationality of the arrangement and layout design of the flat-plate heat pipe structure, reduces the bonding or welding process, and has a strong structural integrity; through the reasonable design of the thickness of the finned fin structure, the molding and assembly processes are simpler and easier, the stability and safety and reliability of the structural combination assembly process are improved, and the difficult problem of the gap thermal resistance between the existing flat-plate heat pipe and the heat sink is effectively solved, and the overall heat dissipation efficiency of the heat pipe heating radiator is improved; and the utility model has a simple structure, low cost, energy saving and environmental protection, and has broad prospects for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0028] Figure 1 It is a cross-sectional view of a double-fin type structure of a flat heat pipe heating radiator with double-sided fins of the utility model;
[0029] Figure 2 It is a cross-sectional view of a multi-fin type structure of a flat heat pipe heating radiator with double-sided fins of the utility model;
[0030] Figure 3 It is a cross-sectional view of the double-sided arc-shaped structure of the flat heat pipe heating radiator with double-sided fins of the utility model;
[0031] Figure 4 It is a cross-sectional view of a double-angled structure of a flat plate heat pipe heating radiator with double-sided fins of the utility model;
[0032] Figure 5 It is a cross-sectional view of a single-sided arc-shaped structure of a flat-plate heat pipe heating radiator with double-sided fins of the utility model;
[0033] Figure 6 It is a sectional view of a single-angle structure of a flat-plate heat pipe heating radiator with double-sided fins of the utility model;
[0034] Figure 7 It is a cross-sectional view of the flat plate type structure of the flat plate heat pipe heating radiator with double-sided fins of the utility model;
[0035] Figure 8It is a structural schematic diagram of the arc-shaped protrusion inside the heat pipe and the evaporation wetting angle of the phase change working medium inside the heat pipe according to an embodiment of the utility model.
[0036] The symbols in the accompanying drawings are:
[0037] 1. Fin heat sink, 2. Connecting tube, 3. Heat pipe. DETAILED DESCRIPTION
[0038] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms without being limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0039] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.
[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" is 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 it can be an indirect connection through an intermediate medium, or it can be a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings:
[0042] The utility model embodiment provides a flat heat pipe heating radiator with double-sided fins. Figure 1 As shown, including:
[0043] Multiple heat pipes 3, connecting pipes 2, and finned heat sinks 1; multiple heat pipes 3 are evenly arranged at equal intervals along the length direction of the connecting pipe 2; each heat pipe 3 is fixedly connected to the connecting pipe 2 along the large plane direction of the connecting pipe 2; the connecting pipe 2 serves as a frame connection for the multiple heat pipes 3, and the multiple heat pipes 3 are combined and connected into a heat pipe assembly as a whole; the heat pipes 3 are evenly arranged at equal intervals so that the heat generated by the heat-generating components can be evenly transferred and dissipated, which can avoid uneven heat dissipation and poor local heat dissipation effects.
[0044] The two ends of the heat pipe 3 are sealed and welded after evacuation. The heat pipe is a fully enclosed structure, and the liquid phase change medium in the internal cavity will not leak or volatilize, which effectively ensures the sealing and safety reliability of the heat pipe.
[0045] The heat pipe 3 adopts an aluminum alloy integral stretching structure, and multiple tubular cavities are evenly distributed inside the heat pipe 3. The tubular cavities are filled with saturated liquid phase change medium. The surface of the tubular cavity is provided with multiple arc-shaped protrusions, and the protrusion angle of the arc-shaped protrusions is greater than the evaporation wetting angle of the phase change medium (see Figure 8 The arc-shaped protrusions enhance the fluidity of the phase-change medium in the heat pipe, and effectively improve the heat conduction capacity of the phase-change medium.
[0046] In this embodiment, the cross section of the heat pipe 3 is a rounded rectangle. The heat pipe 3 with a rounded rectangular cross section can easily fit with a plane, thereby expanding the heat transfer area with the heat generating component and facilitating faster heat dissipation.
[0047] The phase change working fluid is methanol. The heat pipe radiator filled with methanol liquid still has good heat dissipation capacity at low temperatures.
[0048] The fin heat sink 1 is fixedly arranged on the outer wall side of the heat pipe 3. The fin heat sink and the outer wall of the heat pipe 3 are formed by one-time extrusion without using bonding or welding process. There is no gap between the fin heat sink 1 and the heat pipe. The thickness of the fin heat sink 1 is designed to be 1 / 6 of the outer width of the heat pipe 3. This thickness facilitates the extrusion or stretching process of integral molding, reducing the process cost.
[0049] This embodiment adopts an integrally formed structure of a heat pipe with fins, which effectively enhances the heat transfer capacity of the heat pipe radiator and realizes small temperature difference heat transfer and high-efficiency heat exchange to the greatest extent.
[0050] The overall structure of the flat heat pipe heating radiator with double-sided fins in this embodiment adopts a double-fin type, see Figure 1 The connecting pipe 2 is made of aluminum alloy, and the shape of the connecting pipe 2 is designed and formed in accordance with the outer contour of the heat generating component.
[0051] In view of the small amount of heat dissipation required by the heat-generating component, this embodiment chooses to install the flat heat pipe heating radiator with double-sided fins on one side of the outside of the heat-generating component.
[0052] In the overall structure of the flat heat pipe heating radiator with double-sided fins, the coverage width of the heat pipe 2 is greater than 3 times the width of the connecting pipe 2. By rationally designing the coverage width of the heat pipe 3, the rationality of the heat conduction path of the structure is enhanced, and the heat transfer rate and heat dissipation efficiency are improved.
[0053] The flat-plate heat pipe heating radiator with double-sided fin heat sinks provided in this embodiment optimizes and improves the structure of the traditional heat pipe radiator, enhances the structural rationality of the flat-plate heat pipe structure arrangement layout design, reduces the bonding or welding process, enhances the structural integrity, and makes the molding and assembly process simpler and easier through the reasonable fin heat sink structure thickness design, improves the stability and safety and reliability of the structural combination assembly process, effectively solves the difficult problem of the gap thermal resistance between the existing flat-plate heat pipe and the heat sink, and improves the overall heat dissipation efficiency of the heat pipe heating radiator; and has a simple structure, low cost, energy saving and environmental protection, and has broad prospects for promotion and application.
[0054] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.
[0055] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.
Claims
1. A flat heat pipe heating radiator with double-sided fins, characterized in that: include: A plurality of heat pipes, connecting pipes, and finned heat sinks; the plurality of heat pipes are evenly arranged at equal intervals along the length direction of the connecting pipe; each of the heat pipes is fixedly connected to the connecting pipe along the large plane direction of the connecting pipe; The fin heat sink is fixedly arranged on the outer wall side of the heat pipe, the fin heat sink and the outer wall of the heat pipe are formed by one-time extrusion, and there is no gap between the fin heat sink and the heat pipe.
2. The flat heat pipe heating radiator with double-sided fins according to claim 1, characterized in that: The overall structural type of the flat plate heat pipe heating radiator with double-sided fins includes: any one of double-fin type, multi-fin type, double-sided arc type, double-angle type, single-sided arc type, single-angle type, and flat plate type.
3. The flat heat pipe heating radiator with double-sided fins according to claim 2, characterized in that: When the overall structural type of the flat-plate heat pipe heating radiator with double-sided fin heat sink is any one of the double-fin type, multi-fin type, double-sided arc type, and double-angle type, each of the fin heat sinks is symmetrically arranged on both sides of the heat pipe with the center line of the length direction of the connecting pipe as the symmetry axis.
4. The flat heat pipe heating radiator with double-sided fins according to claim 1, characterized in that: The connecting pipe is an aluminum alloy profile, and the shape of the connecting pipe is conformally designed and formed according to the outer contour of the heating component.
5. The flat heat pipe heating radiator with double-sided fins according to claim 1, characterized in that: The two ends of the heat pipe are sealed and welded after evacuation.
6. The flat plate heat pipe heating radiator with double-sided fins according to claim 1, characterized in that: A plurality of tubular cavities are evenly distributed inside the heat pipe, and the tubular cavities are filled with a saturated liquid phase change medium.
7. The flat heat pipe heating radiator with double-sided fins according to claim 6, characterized in that: A plurality of arc-shaped protrusions are arranged on the surface of the tubular cavity, and the protrusion angles of the arc-shaped protrusions are greater than the evaporation wetting angle of the phase-change working medium.
8. The flat heat pipe heating radiator with double-sided fins according to claim 6, characterized in that: The cross section of the heat pipe is circular or rectangular with rounded corners.
9. The flat heat pipe heating radiator with double-sided fins according to claim 1, characterized in that: The thickness of the fin heat sink is 1 / 8-1 / 5 of the outer width of the heat pipe.
10. The flat heat pipe heating radiator with double-sided fins according to claim 1, characterized in that: In the overall structure of the flat-plate heat pipe heating radiator with double-sided fins, the coverage width of the heat pipe is ≥ 3 times the width of the connecting pipe.