Vibration blade and rotary winglet combined heat dissipation system

Abstract

The utility model discloses a vibration blade and rotary winglet combined heat dissipation system, which relates to the technical field of heat dissipation equipment and comprises a first airflow component and a second airflow component. The first airflow assembly comprises a vibrating blade and a driving mechanism; the second airflow assembly comprises a fin base and a plurality of rotating winglets; a plurality of rotary winglets are arranged on the fin base in parallel in the first direction and the second direction, and the rotary winglets are rotationally arranged on the fin base around a first axis; the vibrating blade is arranged on one side of the fin base, and the length extension direction of the vibrating blade is parallel to the first direction; the ends, close to the fin base, of the vibration blades are free ends of the blades, and the ends, away from the fin base, of the vibration blades are fixed. The free ends of the blades can swing in a reciprocating mode in the second direction under driving of the driving mechanism and generate airflow. The problem of local hot spot temperature rise is solved, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation devices, in particular to a combined heat dissipation system of vibrating blades and rotating small wings. Background Technique

[0002] The heat system plays a crucial role in energy issues. To save energy, various compact and efficient heat systems have been applied in industrial fields (such as aerospace, electronics, battery vehicles, etc.). However, the heat dissipation problem of the heat system also restricts the development of various industrial fields. The hot spot temperature (the highest temperature) will seriously affect the performance and service life of heat equipment, and may even cause safety problems in severe cases, so it has attracted much attention. Especially for electronic devices that are developing rapidly in various fields, their performance is severely affected by the hot spot temperature. Therefore, it is urgent to develop efficient heat dissipation technologies to minimize the hot spot temperature.

[0003] The current heat dissipation methods are mainly divided into active heat dissipation and passive heat dissipation. Active heat dissipation includes air cooling, liquid cooling, dynamic heat pipes, etc. Although it can effectively dissipate heat, it also requires additional energy consumption. Passive heat dissipation mainly uses vortex generators and fins. Among them, the vortex generator is the simplest and most common structure. However, when the fluid passes through the vortex generator, although longitudinal vortices are formed to enhance the overall heat dissipation, a flow dead zone is also formed behind the vortex generator, resulting in a significant increase in the local hot spot temperature and making it unable to be directly applied to the heat dissipation of electronic devices.

[0004] Therefore, in order to overcome the increase in hot spot temperature caused by the vortex generator, the present invention designs a combined heat dissipation system of vibrating blades and rotating small wings, aiming to solve the problem of the increase in hot spot temperature behind the vortex generator and make full use of the oscillating air flow formed by the vibrating blades. Content of the Utility Model

[0005] The purpose of the utility model is to provide a combined heat dissipation system of vibrating blades and rotating small wings to solve the problems existing in the above-mentioned prior art, solve the problem of local hot spot temperature rise, and improve the heat dissipation effect.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] The present utility model provides a combined heat dissipation system of a vibrating blade and a rotating vane, including a first air flow component and a second air flow component. The ZY plane in a coordinate system is set as the first plane, the ZX plane is set as the second plane, the Y-axis direction is the first direction, the X-axis direction is the second direction, and the Z-axis direction is the third direction. The first air flow component includes a vibrating blade and a driving mechanism. The second air flow component includes a fin base and a plurality of rotating vanes. The fin base is used for being fixedly arranged on the surface of a heat dissipation device, and heat can be conducted between the fin base and the surface of the heat dissipation device. A plurality of the rotating vanes are arranged in parallel on the fin base in both the first direction and the second direction. The rotating vanes are rotatably arranged on the fin base around a first axis, and the first axis is parallel to the third direction. The vibrating blade is arranged on one side of the fin base, and the length extension direction of the vibrating blade is parallel to the first direction. One end of the vibrating blade close to the fin base is the free end of the blade, and the position of the end of the vibrating blade far from the fin base is fixed. The free end of the blade can reciprocally swing along the second direction under the drive of the driving mechanism and generate an air flow.

[0008] Preferably, the driving mechanism includes a piezoelectric sheet and a base. One end of the vibrating blade far from the free end of the blade is fixed on the base. And the piezoelectric sheet is used for being fixed on the vibrating blade, and when the piezoelectric sheet is energized, it can generate vibration and drive the free end of the vibrating blade to reciprocally swing along the second direction.

[0009] Preferably, each of the rotating vanes is rotatably connected to the fin base through a bearing.

[0010] Preferably, both the vibrating blade and the rotating vanes are made of heat-conducting materials.

[0011] Preferably, a heat-conducting substance is arranged on the side of the fin base for fitting with the surface of the heat dissipation device.

[0012] The present utility model has achieved the following technical effects compared with the prior art:

[0013] In the combined heat dissipation system of a vibrating blade and a rotating vane provided by the present utility model, an oscillating air flow and a longitudinal eddy are formed by the vibrating blade, and the oscillating air flow and the longitudinal eddy are induced secondarily by the rotating vanes, enhancing the turbulence degree of the surrounding fluid and increasing the local air flow velocity. At the same time, the rotating vanes rotate under the action of the oscillating air flow, completely destroying the flow dead zone, significantly reducing the hot spot temperature, effectively alleviating the safety thermal failure problem caused by too high hot spot temperature of electronic devices, and improving the heat dissipation effect.

[0014] Furthermore, the structure of the piezoelectric sheet is relatively simple and is easy to be driven by a driving circuit. The manufacturing cost of the piezoelectric sheet is relatively low, and the performance is stable and reliable.

[0015] Furthermore, the rotating fin is connected to the fin base by a bearing, which can ensure the stable and smooth rotation of the rotating fin, reduce air flow loss, and improve the heat dissipation effect.

[0016] Furthermore, the vibrating blades and rotating fins made of heat-conducting materials can ensure good heat transfer and improve the heat dissipation effect.

[0017] Furthermore, the setting of the heat-conducting substance can enable the heat dissipation device to transfer heat to the fin base more efficiently, improving the heat dissipation effect of the heat dissipation device. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the combined heat dissipation system of vibrating blades and rotating fins provided by the present invention;

[0020] Figure 2 It is a schematic diagram of the connection between the rotating fin and the fin base in the combined heat dissipation system of vibrating blades and rotating fins provided by the present invention;

[0021] Figure 3 In the combined heat dissipation system of vibrating blades and rotating fins provided by the present invention, the rotating fin is rectangular;

[0022] Figure 4 In the combined heat dissipation system of vibrating blades and rotating fins provided by the present invention, the rotating fin is triangular;

[0023] Figure 5 In the combined heat dissipation system of vibrating blades and rotating fins provided by the present invention, the rotating fin is trapezoidal.

[0024] In the figure:

[0025] 100 - Combined heat dissipation system of vibrating blades and rotating fins;

[0026] 10 - Vibrating blade; 11 - Base; 12 - Power cord; 13 - Piezoelectric sheet; 14 - Free end of the blade;

[0027] 20 - Rotating fin; 21 - Bearing;

[0028] 30 - Fin base. Detailed Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a combined heat dissipation system of a vibrating blade and a rotating finlet to solve the problems existing in the prior art, solve the problem of the rise of local hot spot temperature, and improve the heat dissipation effect.

[0031] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiment 1

[0033] This embodiment provides a combined heat dissipation system 100 of a vibrating blade and a rotating finlet. As Figures 1 to 5 shown, it includes a first air flow component and a second air flow component; the ZY plane in a coordinate system is set as the first plane, the ZX plane is set as the second plane, the Y-axis direction is the first direction, the X-axis direction is the second direction, and the Z-axis direction is the third direction; the first air flow component includes a vibrating blade 10 and a driving mechanism; the second air flow component includes a fin base 30 and a plurality of rotating finlets 20. The fin base 30 is used for being fixedly arranged on the surface of the heat dissipation device, and heat can be conducted between the fin base 30 and the surface of the heat dissipation device; a plurality of rotating finlets 20 are arranged in parallel on the fin base 30 in both the first direction and the second direction. Each rotating finlet 20 is rotatably arranged on the fin base 30 around a first axis, and the first axis is parallel to the third direction; the vibrating blade 10 is arranged on one side of the fin base 30, and the length extension direction of the vibrating blade 10 is parallel to the first direction; the end of the vibrating blade 10 close to the fin base 30 is the blade free end 14, and the end of the vibrating blade 10 far from the fin base 30 is fixed in position; the blade free end 14 can reciprocally swing along the second direction under the drive of the driving mechanism and generate an air flow.

[0034] An oscillating air flow and a longitudinal eddy are formed by the vibrating blade 10, and the rotating finlets 20 secondarily induce the oscillating air flow and the longitudinal eddy, enhancing the turbulence degree of the surrounding fluid and increasing the local air flow velocity; at the same time, the rotating finlets 20 rotate under the action of the oscillating air flow, completely destroying the flow dead zone, significantly reducing the hot spot temperature, effectively alleviating the safety thermal failure problem caused by the too high hot spot temperature of electronic devices, and improving the heat dissipation effect.

[0035] Specifically, the free end 14 of the vibrating blade 10 generates periodic oscillations, forming an oscillating air flow at the free end 14 of the blade, which can be directly used for heat dissipation. It should be noted that the velocity magnitude and direction of the oscillating air flow formed at the free end 14 of the blade change with time, and longitudinal vortices are formed, significantly enhancing the local air flow velocity. Further, the rotating winglets 20 fixed above the heat source secondarily induce the oscillating air flow and longitudinal vortices, forming more longitudinal vortices downstream of the wall surface, enhancing heat dissipation. At the same time, driven by the oscillating flow, the rotating winglets 20 rotate, completely destroying the flow dead zone behind them and significantly reducing the pressure drop, further improving heat dissipation and significantly reducing the hot spot temperature.

[0036] Among them, regarding the relevant structural description of the first air flow component:

[0037] In an alternative embodiment of the present example, preferably, as Figure 1 shown, the driving mechanism includes a piezoelectric sheet 13 and a base 11. One end of the vibrating blade 10 away from the free end 14 of the blade is fixed to the base 11; and the piezoelectric sheet 13 is used to be fixed on the vibrating blade 10, and when the piezoelectric sheet 13 is energized, it can generate vibrations and drive the free end 14 of the vibrating blade 10 to reciprocate in the second direction. The structure of the piezoelectric sheet 13 is relatively simple and is easy to be driven by a driving circuit; the manufacturing cost of the piezoelectric sheet 13 is relatively low, and its performance is stable and reliable.

[0038] Specifically, the piezoelectric sheet 13 is connected to an AC power supply through a power line 12.

[0039] Among them, regarding the relevant structural description of the second air flow component:

[0040] In an alternative embodiment of the present example, preferably, as Figure 1 and Figure 2 shown, each rotating winglet 20 is rotatably connected to the fin base 30 through a bearing 21. The rotating winglets 20 are connected to the fin base 30 by bearings 21, which can ensure the stable and smooth rotation of the rotating winglets 20, reduce air flow losses, and improve the heat dissipation effect.

[0041] Specifically, in practical applications, the number and shape of the rotating winglets 20 can be changed according to the size of the heat source; regarding the shape of the rotating winglets 20, as Figures 3 to 5 shown, it includes but is not limited to rectangles, triangles, trapezoids, etc.

[0042] In an alternative embodiment of the present example, preferably, a heat-conducting substance is provided on the side of the fin base 30 for fitting with the surface of the heat-dissipating device. The provision of the heat-conducting substance can enable the heat-dissipating device to transfer heat to the fin base 30 more efficiently, improving the heat dissipation effect of the heat-dissipating device.

[0043] Specifically, the heat-conducting substance can be any existing heat-conducting adhesive.

[0044] Among them, regarding other relevant descriptions:

[0045] In an alternative solution of this embodiment, preferably, both the vibrating blade 10 and the rotating vane 20 are made of heat-conducting materials. The vibrating blade 10 and the rotating vane 20 made of heat-conducting materials can ensure good heat transfer and improve the heat dissipation effect.

[0046] Specifically, the fin base 30 can be bonded above the heat source to be cooled, such as above a computer CPU, by a heat-conducting adhesive, and the vibrating blade 10 is fixedly arranged on one side of the fin base 30 corresponding to the match through the base 11.

[0047] The sizes and shapes of the vibrating blade 10 and the rotating vane 20 designed in this embodiment can be changed according to the size of the heat source, which can expand their application range, is not restricted by the environment, and gives full play to the flexibility of the combined heat dissipation system. Moreover, the power consumption of the vibrating blade 10 in this embodiment is extremely low, which is beneficial to energy conservation and emission reduction.

[0048] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A combined heat dissipation system of a vibrating blade and a rotating winglet, characterized in that: including a first airflow component and a second airflow component; The ZY plane in a coordinate system is set as the first plane, the ZX plane is set as the second plane, the Y axis direction is the first direction, the X axis direction is the second direction, and the Z axis direction is the third direction; The first airflow component includes a vibrating blade and a driving mechanism; The second airflow assembly includes a fin base and a plurality of rotating wings, wherein the fin base is used to be fixedly arranged on the surface of the heat dissipation device, and heat can be conducted between the fin base and the surface of the heat dissipation device; the fin base is provided with a plurality of rotating wings arranged in parallel in both the first direction and the second direction, and the rotating wings are arranged on the fin base to rotate around a first axis, and the first axis is parallel to the third direction; The vibration blade is arranged on one side of the fin base, and the length extension direction of the vibration blade is parallel to the first direction; the end of the vibration blade close to the fin base is the blade free end, and the position of the end of the vibration blade away from the fin base is fixed; Driven by the driving mechanism, the free end of the blade can swing back and forth along the second direction and generate airflow.

2. The combined heat dissipation system of the vibrating blade and the rotating winglet according to claim 1 is characterized in that: The driving mechanism comprises a piezoelectric sheet and a base, and one end of the vibrating blade away from the free end of the blade is fixed on the base; The piezoelectric sheet is used to be fixed on the vibration blade, and the piezoelectric sheet can generate vibration when energized and drive the free end of the vibration blade to swing back and forth along the second direction.

3. The combined heat dissipation system of the vibrating blade and the rotating winglet according to claim 1 is characterized in that: Each of the rotating winglets is rotatably connected to the fin base via a bearing.

4. The combined heat dissipation system of the vibrating blade and the rotating winglet according to claim 1 is characterized in that: The vibrating blades and the rotating winglets are both made of heat-conducting materials.

5. The combined heat dissipation system of the vibrating blade and the rotating winglet according to claim 1 is characterized in that: A heat-conducting material is arranged on one side of the fin base for contacting with the surface of the heat dissipation device.

Images