Combined heat dissipation structure

Abstract

The utility model relates to a combined heat dissipation structure, which comprises a cooling bottom plate, a heat dissipation fin group arranged at the upper part of the cooling bottom plate, at least one piezoelectric fan arranged beside the heat dissipation fin group, and a gap arranged between the piezoelectric fan and the heat dissipation fin group, and the fan flow direction of the piezoelectric fan is consistent with the heat dissipation channel direction of the heat dissipation fin group. The LED lamp is good in heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to a heat dissipation structure, in particular to a heat dissipation structure with a piezoelectric fan. Background Art

[0002] At present, various electronic devices have been widely used in all aspects of people's work, study, life, etc., greatly improving people's efficiency and quality of doing things. However, during the long-term use of electronic devices, various components will inevitably continue to generate a lot of heat. If the heat cannot be dissipated in time, it will inevitably affect the safe and reliable operation of the electronic equipment. Therefore, it is very necessary to design and install effective heat dissipation solutions for electronic equipment.

[0003] Piezoelectric fans usually consist of fan blades and piezoelectric ceramics mounted on the blades. The piezoelectric ceramics are driven by voltage to produce the inverse piezoelectric effect, which causes geometric deformation of elongation and shortening in the length direction of the piezoelectric ceramics themselves, thereby causing bending vibration of the fan blades. When the frequency of the AC voltage is equal to the natural frequency of the vibration plate, the resonance of the two will significantly increase the amplitude of the overhanging end of the fan blade, thereby outputting high-speed, directional and stable airflow, producing ventilation and cooling effects.

[0004] However, in daily use, it is difficult to achieve the desired heat dissipation effect by using only a piezoelectric fan as a heat dissipation device. Utility Model Content

[0005] Purpose of the invention: The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a combined heat dissipation structure with good heat dissipation effect.

[0006] Technical solution: In order to solve the above technical problems, the utility model describes a combined heat dissipation structure, which includes a cooling base plate, a heat dissipation fin group is provided on the upper part of the cooling base plate, a piezoelectric fan is provided next to the heat dissipation fin group, at least one piezoelectric fan is provided, a gap is provided between the piezoelectric fan and the heat dissipation fin group, and the fan flow direction of the piezoelectric fan is consistent with the heat dissipation channel direction of the heat dissipation fin group.

[0007] Furthermore, the cooling base plate and the heat dissipation fin group are integrally formed.

[0008] Furthermore, the piezoelectric fan is a longitudinally vibrating ceramic fan.

[0009] Furthermore, the piezoelectric fan includes a piezoelectric ceramic sheet, a fan blade and a circuit board, the fan blade is connected to the piezoelectric ceramic sheet, and the piezoelectric ceramic sheet is electrically connected to the circuit board.

[0010] Furthermore, the fins of the heat dissipation fin group are arranged at an angle with the cooling base plate, and the angle is less than 90°.

[0011] Furthermore, a gap I is provided between the front end of the fan blade and the heat dissipation fin group, and a gap II is provided between the bottom end of the fan blade and the cooling base plate.

[0012] Furthermore, the piezoelectric fan includes an inner support frame, a piezoelectric vibrator and an outer support frame, piezoelectric vibrators are arranged on both sides of the inner support frame, a circular opening is provided on the inner support frame, the circular opening and the piezoelectric vibrators on both sides form an adsorption cavity, a cavity outlet is provided on the upper part of the circular opening, the piezoelectric vibrators are all embedded in the outer support frame, the two outer support frames are tightly attached to the opposite end faces, the two outer support frames are provided with door-shaped grooves on the opposite surfaces, the two bottoms of the door-shaped grooves are air inlets, the top of the door-shaped grooves is provided with air outlets opposite to the cavity outlets, and the bottom of the outer support frame is also provided with a wiring hole that cooperates with the piezoelectric vibrator. The piezoelectric vibrator is composed of a substrate and a piezoelectric body attached to the substrate, the piezoelectric body is close to the outer support frame, and the outer support frame is provided with an avoidance slot that cooperates with the piezoelectric body.

[0013] Furthermore, the cooling base plate includes a VC liquid cooling base plate and a VP steam cooling base plate, wherein the VC liquid cooling base plate is made of copper, and the VP steam cooling base plate is made of aluminum.

[0014] Beneficial effect: Compared with the prior art, the utility model has the following significant advantages: in the utility model, the cooling base plate and the heat dissipation fin group are integrally formed, and the heat dissipation effect is effectively improved by the heat dissipation fin group. A piezoelectric fan is provided next to the heat dissipation fin group, and at least one piezoelectric fan is provided. A gap is provided between the piezoelectric fan and the heat dissipation fin group. The fan flow direction of the piezoelectric fan is consistent with the heat dissipation channel direction of the heat dissipation fin group. The piezoelectric fan further improves the heat dissipation effect. The fins of the heat dissipation fin group are arranged at an angle with the cooling base plate, and the angle is less than 90°, which effectively reduces the volume and forms an effective heat dissipation angle, thereby improving the heat dissipation effect. A longitudinally vibrating ceramic fan is adopted, which is small in size and suitable for 3C heat dissipation. This product is central heat dissipation and can be used in a relatively closed space. There is no requirement for the position of the opening in the space, and there is no need to consider the convection of the wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a front view structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 4 It is a side view structural schematic diagram of the utility model;

[0019] Figure 5It is a connection diagram of the inner supporting frame, the piezoelectric vibrator and the outer supporting frame in the utility model. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a combined heat dissipation structure described in the utility model includes a cooling base plate 1, the cooling base plate 1 adopts a VC liquid cooling base plate, a heat dissipation fin group 2 is arranged on the upper part of the cooling base plate 1, the cooling base plate 1 and the heat dissipation fin group 2 are integrally formed, a piezoelectric fan 3 is arranged next to the heat dissipation fin group 2, and one piezoelectric fan 3 is provided. The piezoelectric fan 3 adopts a longitudinal vibration ceramic fan, the piezoelectric fan 3 includes a piezoelectric ceramic sheet 3.1, a fan blade 3.2 and a circuit board 3.3, the fan blade 3.2 is connected to the piezoelectric ceramic sheet 3.1, the piezoelectric ceramic sheet 3.1 is electrically connected to the circuit board 3.3, a gap I is arranged between the front end of the fan blade 3.2 and the heat dissipation fin group 2, a gap II is arranged between the bottom end of the fan blade 3.2 and the cooling base plate 1, the fan flow direction of the piezoelectric fan 3 is consistent with the heat dissipation channel direction of the heat dissipation fin group 2, and the fins of the heat dissipation fin group 2 are arranged at an angle with the cooling base plate 1, and the angle is less than 90°. Example 2

[0022] like Figure 5As shown, a combined heat dissipation structure described in the utility model includes a cooling base plate 1, the cooling base plate 1 adopts a VP steam cooling base plate, a heat dissipation fin group 2 is arranged on the upper part of the cooling base plate 1, the cooling base plate 1 and the heat dissipation fin group 2 are integrally formed, a piezoelectric fan 3 is arranged next to the heat dissipation fin group 2, the piezoelectric fan 3 is arranged one, the piezoelectric fan 3 includes an inner support frame 4, a piezoelectric vibrator 5 and an outer support frame 6, piezoelectric vibrators 5 are arranged on both sides of the inner support frame 4, a circular opening 7 is arranged on the inner support frame 4, the circular opening 7 and the piezoelectric vibrators 5 on both sides form an adsorption cavity, a cavity outlet 8 is arranged on the upper part of the circular opening 7, the piezoelectric vibrators 5 are all embedded in the outer support frame 6, and the two outer support The relative end faces of the frame 6 are tightly attached, and the opposite surfaces of the two outer supporting frames 6 are provided with door-shaped grooves 9. The two bottoms of the door-shaped grooves 9 are air inlet holes 10. The top of the door-shaped grooves 9 is provided with air outlet holes 11 opposite to the cavity outlet 8. The bottom of the outer supporting frame 6 is also provided with a wiring hole 12 that cooperates with the piezoelectric vibrator 5. The piezoelectric vibrator 5 is composed of a substrate 5.1 and a piezoelectric body 5.2 attached to the substrate 5.1. The piezoelectric body 5.2 is close to the outer supporting frame 6. The outer supporting frame 6 is provided with an avoidance slot 13 that cooperates with the piezoelectric body 5.2. The fan flow direction of the piezoelectric fan 3 is consistent with the heat dissipation channel direction of the heat dissipation fin group 2. The fins of the heat dissipation fin group 2 are arranged at an angle with the cooling base plate 1, and the angle is less than 90°.

[0023] In the utility model, the cooling base plate and the heat dissipation fin group are formed in one piece, and the heat dissipation effect is effectively improved by the heat dissipation fin group. A piezoelectric fan is arranged next to the heat dissipation fin group, and at least one piezoelectric fan is arranged. A gap is arranged between the piezoelectric fan and the heat dissipation fin group. The fan flow direction of the piezoelectric fan is consistent with the heat dissipation channel direction of the heat dissipation fin group. The heat dissipation effect is further improved by the piezoelectric fan. The fins of the heat dissipation fin group are arranged at an angle with the cooling base plate, and the angle is less than 90°, which effectively reduces the volume and forms an effective heat dissipation angle, thereby improving the heat dissipation effect. A longitudinally vibrating ceramic fan is adopted, which is small in volume and suitable for 3C heat dissipation. This product is central heat dissipation and can be used in a relatively closed space. There is no requirement for the position of the opening in the space, and there is no need to consider the convection of the wind.

[0024] The present invention provides a thought and method. There are many methods and ways to implement the technical solution. The above is only the preferred implementation mode of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A combined heat dissipation structure, characterized in that: It comprises a cooling base plate (1), a heat dissipation fin group (2) is arranged on the upper part of the cooling base plate (1), a piezoelectric fan (3) is arranged next to the heat dissipation fin group (2), at least one piezoelectric fan (3) is arranged, a gap is arranged between the piezoelectric fan (3) and the heat dissipation fin group (2), and the fan flow direction of the piezoelectric fan (3) is consistent with the heat dissipation channel direction of the heat dissipation fin group (2).

2. The combined heat dissipation structure according to claim 1, characterized in that: The cooling base plate (1) and the heat dissipation fin group (2) are integrally formed.

3. The combined heat dissipation structure according to claim 1, characterized in that: The piezoelectric fan (3) is a longitudinally vibrating ceramic fan.

4. The combined heat dissipation structure according to claim 1, characterized in that: The piezoelectric fan (3) comprises a piezoelectric ceramic sheet (3.1), a fan blade (3.2) and a circuit board (3.3); the fan blade (3.2) is connected to the piezoelectric ceramic sheet (3.1), and the piezoelectric ceramic sheet (3.1) is electrically connected to the circuit board (3.3).

5. The combined heat dissipation structure according to claim 1, characterized in that: The fins of the heat dissipation fin group (2) are arranged at an angle with the cooling base plate (1), and the angle is less than 90°.

6. The combined heat dissipation structure according to claim 4, characterized in that: A gap I is provided between the front end of the fan blade (3.2) and the heat dissipation fin group (2), and a gap II is provided between the bottom end of the fan blade (3.2) and the cooling bottom plate (1).

7. The combined heat dissipation structure according to claim 1, characterized in that: The piezoelectric fan (3) comprises an inner support frame (4), a piezoelectric vibrator (5) and an outer support frame (6). The piezoelectric vibrators (5) are arranged on both sides of the inner support frame (4). A circular opening (7) is arranged on the inner support frame (4). The circular opening (7) and the piezoelectric vibrators (5) on both sides form an adsorption cavity. A cavity outlet (8) is arranged on the upper part of the circular opening (7). The piezoelectric vibrators (5) are all embedded in the outer support frame (6). The opposite end surfaces of the two outer support frames (6) are tightly attached. The opposite surfaces of the two outer support frames (6) are provided with a door-shaped groove (9). ), the two bottoms of the gate-shaped groove (9) are air inlet holes (10), the top of the gate-shaped groove (9) is provided with an air outlet hole (11) opposite to the cavity outlet (8), and the bottom of the outer support frame (6) is also provided with a wiring hole (12) cooperating with the piezoelectric vibrator (5), the piezoelectric vibrator (5) is composed of a substrate (5.1) and a piezoelectric body (5.2) attached to the substrate (5.1), the piezoelectric body (5.2) is close to the outer support frame (6), and the outer support frame (6) is provided with an avoidance slot hole (13) cooperating with the piezoelectric body (5.2).

8. The combined heat dissipation structure according to claim 1, characterized in that: The cooling base plate (1) comprises a VC liquid cooling base plate and a VP steam cooling base plate.

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