Piezoelectric fan air cooling test platform

Abstract

The utility model belongs to test equipment technical field discloses a kind of piezoelectric fan air-cooled test platform, the piezoelectric fan air-cooled test platform includes radiator, heating block, heating piece and temperature monitoring piece, the side of radiator forms the heat dissipation air duct that is linked with the air outlet end of piezoelectric fan, heating block and radiator are thermally coupled;Heating piece is used to heat heating block;Temperature monitoring piece is used to monitor the temperature of heating block or radiator.The above-mentioned piezoelectric fan air-cooled test platform can effectively test the heat dissipation performance of piezoelectric fan, and help piezoelectric fan selection.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a piezoelectric fan air-cooled testing platform. Background Technology

[0002] Air cooling is one of the most widely used methods in the thermal management of electronic equipment. Air cooling equipment includes traditional fans and piezoelectric fans. Piezoelectric fans utilize piezoelectric ceramics to drive thin plates to generate high-frequency vibrations, forming directional airflow to achieve heat dissipation. Compared to traditional fans such as axial fans and piezoelectric fans, they have the following advantages:

[0003] Small size – suitable for space-constrained portable or embedded devices;

[0004] Lightweight – reducing the overall weight of the system;

[0005] Low noise – suitable for applications where quiet operation is a high priority;

[0006] Low power consumption – suitable for heat dissipation in low-power electronic devices.

[0007] When selecting air-cooled heat dissipation equipment, its heat dissipation performance is one of the important factors. Traditional fans have mature performance curves (PQ curves), which can be used to directly select and predict their heat dissipation capacity under different flow rates and static pressures during the design phase. However, due to the special driving principle, piezoelectric fans have aerodynamic characteristics that differ significantly from traditional fans, and manufacturers usually cannot provide standardized PQ curves, making it difficult to directly evaluate their heat dissipation performance. Utility Model Content

[0008] The purpose of this invention is to provide a piezoelectric fan air-cooled test platform to solve the problem of difficulty in evaluating the heat dissipation performance of piezoelectric fans.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] A piezoelectric fan air-cooled test platform includes a radiator, a heating block, a heating element, and a temperature monitoring element. One side of the radiator forms a heat dissipation duct that is connected to the air outlet of the piezoelectric fan. The heating block is thermally coupled to the radiator. The heating element is used to heat the heating block. The temperature monitoring element is used to monitor the temperature of the heating block or the radiator.

[0011] In one embodiment, the heating element is an electric heating rod, and the heating block has mounting holes or mounting grooves for the electric heating rod to pass through.

[0012] In one embodiment, the heat sink includes a substrate and heat dissipation fins, with a plurality of heat dissipation fins spaced apart and a heat dissipation airflow channel formed between adjacent heat dissipation fins.

[0013] In one embodiment, the piezoelectric fan air-cooled test platform further includes an air duct cover plate, which is fixed to the side of each heat dissipation fin facing away from the substrate.

[0014] In one embodiment, a mounting cavity for mounting the piezoelectric fan is formed between the duct cover and the substrate, and a ventilation hole is provided on the duct cover corresponding to the position of the mounting cavity.

[0015] In one embodiment, one of the substrate and the duct cover is provided with a plug-in post, and the other of the substrate and the duct cover is provided with a plug-in hole, and the plug-in post is inserted into the plug-in hole.

[0016] In one embodiment, a limiting groove is formed on the substrate, and the heating block is partially embedded in the limiting groove.

[0017] In one embodiment, the piezoelectric fan air-cooled test platform further includes a heat insulation component, and the heating block is sandwiched between the heat insulation component and the heat sink.

[0018] In one embodiment, the heat insulation component has a groove, and the heating block is embedded in the groove.

[0019] In one embodiment, the thickness of the heat insulation component is between 5mm and 10mm.

[0020] The beneficial effects of this utility model are:

[0021] The piezoelectric fan air-cooling test platform provided by this utility model allows the piezoelectric fan to drive airflow towards the radiator during testing. The radiator then transfers the heat from the heating block to the air. By monitoring the temperature of the heating block or the surface of the radiator, the heat dissipation performance of the piezoelectric fan under different wind speeds and power levels can be effectively obtained, thus providing experimental basis for the selection and application of piezoelectric fans. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the piezoelectric fan air-cooled test platform provided in one embodiment of the present utility model from one angle;

[0023] Figure 2 This is a structural schematic diagram of the piezoelectric fan air-cooled test platform provided in this embodiment of the present invention from another angle;

[0024] Figure 3 This is an exploded structural diagram of the piezoelectric fan air-cooled test platform provided in this embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the air duct cover provided in the embodiment of this utility model;

[0026] Figure 5 This is a schematic diagram of the heating element assembled on the heat insulation element in the embodiment of this utility model.

[0027] In the picture:

[0028] 1. Heat sink; 11. Base plate; 12. Heat dissipation fins; 13. Connecting post; 14. Limiting groove; 2. Heating block; 3. Heating element; 4. Heat insulation element; 41. Embedded groove; 42. Lead wire groove; 5. Air duct cover; 51. Connecting hole; 52. Ventilation hole;

[0029] 10. Piezoelectric fan. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] refer to Figures 1-5 As shown in the figure, an embodiment of the present invention proposes a piezoelectric fan air-cooled test platform, including a heat sink 1, a heating block 2, a heating element 3, and a temperature monitoring element. A heat dissipation air duct is formed on one side of the heat sink 1, which is connected to the air outlet of the piezoelectric fan 10. The heating block 2 serves as a heated component and is thermally coupled to the heat sink 1. The heating block 2 and the heating element 3 are used to simulate a heat source. The heating block 2 can be a high thermal conductivity metal block such as a copper block, an aluminum block, or an aluminum alloy. The heating element 3 can output heat according to a set power to heat the heating block 2. The temperature monitoring element (not shown in the figure) is used to monitor the temperature of the surface of the heating block 2 or the heat sink 1.

[0035] When testing the piezoelectric fan 10 using the aforementioned piezoelectric fan air-cooled test platform, the piezoelectric fan 10 is placed on one side of the radiator 1. After the piezoelectric fan 10 is started, it drives the airflow to the radiator 1. The radiator 1 transfers the heat from the heating block 2 to the air. By monitoring the temperature of the heating block 2 or the surface of the radiator 1, the heat dissipation performance of the piezoelectric fan 10 under different wind speeds and power can be obtained, providing a strong basis for the selection of the piezoelectric fan 10.

[0036] It is understood that the thermal coupling between the heating block 2 and the heat sink 1 can be either direct contact between the heating block 2 and the heat sink 1, or a thermally conductive connection between the heating block 2 and the heat sink 1 via a thermally conductive component. For example, the thermally conductive component is thermal grease or a thermally conductive pad, which can make close contact with the heat sink 1, thereby reducing thermal resistance and allowing heat from the heating block 2 to be quickly conducted to the heat sink 1.

[0037] For example, the heating element 3 is an electric heating rod. To test the heat dissipation performance of the piezoelectric fan 10 under different heating power conditions, the power of the electric heating rod is adjustable. For example, the power of the electric heating rod is between 5W and 50W, powered by a DC power supply and regulated by a temperature controller. By adjusting the power of the electric heating rod and the operating voltage of the piezoelectric fan 10, the temperature rise and thermal resistance parameters of the radiator 1 or heating block 2 under different heat dissipation conditions can be obtained, providing experimental basis for the selection of the piezoelectric fan 10.

[0038] Furthermore, to achieve uniform heating of the heating block 2 by the electric heating rods, multiple electric heating rods are provided. The heating block 2 has mounting holes or slots for the electric heating rods to pass through. These mounting holes or slots are evenly distributed on the heating block 2, and each electric heating rod is inserted into a corresponding mounting hole or slot. For example, three mounting holes and three electric heating rods are provided. Multiple temperature monitoring devices can also be provided, especially when monitoring the radiator 1, to monitor the steady-state temperature of the radiator 1, thereby more effectively selecting the piezoelectric fan 10. Thermocouples can be specifically used as temperature monitoring devices.

[0039] In some embodiments, the heat sink 1 is a plate heat sink, which includes a base plate 11 and heat dissipation fins 12. Multiple heat dissipation fins 12 are spaced apart, and heat dissipation air channels are formed between adjacent heat dissipation fins 12. In order to ensure that the airflow flows accurately through the heat dissipation air channels and improve the test accuracy of the heat dissipation performance of the piezoelectric fan 10, the piezoelectric fan air-cooled test platform also includes an air channel cover plate 5. The air channel cover plate 5 is fixed to the side of each heat dissipation fin 12 facing away from the base plate 11 to block the opening of the heat dissipation air channel facing away from the base plate 11. The air channel cover plate 5 and the base plate 11 form a mounting cavity for mounting the piezoelectric fan 10. That is to say, in addition to guiding the airflow, the air channel cover plate 5 is also used to limit the piezoelectric fan 10.

[0040] To facilitate testing of different piezoelectric fans 10, the duct cover 5 and the base plate 11 are detachably connected. (Reference) Figure 3 As shown, to reduce the difficulty of assembling and disassembling the duct cover 5 and the substrate 11, one of the substrate 11 and the duct cover 5 is provided with a plug post 13, and the other is provided with a plug hole 51. The plug post 13 is inserted into the plug hole 51 to connect the duct cover 5 and the substrate 11. For example, multiple plug posts 13 are provided around the substrate 11, and the plug holes 51 are provided one-to-one with the plug posts 13 to improve the connection stability of the duct cover 5 and the substrate 11.

[0041] Based on the premise that the substrate 11 is provided with a plug-in post 13 or a plug-in hole 51, the piezoelectric fan 10 is provided with a plug-in hole 51 that mates with the plug-in post 13 or a plug-in post 13 that mates with the plug-in hole 51, that is, the piezoelectric fan 10 and the substrate 11 are plugged in and mated.

[0042] Furthermore, ventilation holes 52 are provided on the duct cover 5 at the position corresponding to the mounting cavity to reduce the interference of the duct cover 5 on the airflow passing through the piezoelectric fan 10. Specifically, multiple ventilation holes 52 are spaced apart along the distribution direction of the heat dissipation fins 12, and the ventilation holes 52 extend along the length direction of the heat dissipation fins 12.

[0043] The air-cooled test platform for piezoelectric fans generally needs to be placed on a platform for easy observation. (Continue to refer to...) Figure 3 and Figure 5As shown, in order to reduce the possibility of damage to the storage platform when the heating block 2 is heated, the piezoelectric fan air-cooled test platform also includes a heat insulation component 4. The heating block 2 is sandwiched between the heat insulation component 4 and the heat sink 1. The heat insulation component 4 is used to support the heating block 2 and the heat sink 1 to separate the storage platform from the heating block 2.

[0044] Specifically, in order to reduce the overall height of the piezoelectric fan air-cooled test platform, thereby reducing the space occupied by the piezoelectric fan air-cooled test platform, and also to reduce the assembly difficulty of the heating block 2 and the heat insulation component 4, a groove 41 is provided on the heat insulation component 4, and the heating block 2 is at least partially embedded in the groove 41. In addition, a lead wire groove 42 is also provided on the heat insulation component 4 to connect the groove 41 for leading out the power cord of the electric heating rod.

[0045] refer to Figure 4 As shown, a limiting groove 14 is formed on the substrate 11 of the heat sink 1. The heating block 2 is embedded in the limiting groove 14 and protrudes from the limiting groove 14. The setting of the limiting groove 14 reduces the assembly difficulty of the heating block 2 and the heat sink 1, and at the same time, keeps the relative position of the heating block 2 and the heat sink 1 unchanged.

[0046] In some embodiments, the heat insulation component 4 is set as a rectangular block with a thickness between 5mm and 10mm. If the thickness is too small, it is difficult to achieve a heat insulation effect; if the thickness is too large, it will significantly increase the space occupied by the piezoelectric fan air-cooled test platform. For example, the heat insulation component 4 is made of bakelite material. As a heat insulation material, bakelite is inexpensive and has a longer service life than traditional plastic or rubber heat insulation materials.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A piezoelectric fan air-cooled testing platform, characterized in that, include: A radiator, wherein one side of the radiator forms a heat dissipation duct that is connected to the air outlet of the piezoelectric fan; The heating block is thermally coupled to the radiator. A heating element, used to heat the heating block; A temperature monitoring device, used to monitor the temperature of the heating block or the radiator.

2. The piezoelectric fan air-cooled test platform according to claim 1, characterized in that, The heating element is an electric heating rod, and the heating block has mounting holes or mounting grooves for the electric heating rod to pass through.

3. The piezoelectric fan air-cooled test platform according to claim 1, characterized in that, The heat sink includes a base plate and heat dissipation fins, with multiple heat dissipation fins spaced apart and heat dissipation airflow formed between adjacent heat dissipation fins.

4. The piezoelectric fan air-cooled test platform according to claim 3, characterized in that, The piezoelectric fan air-cooled test platform also includes an air duct cover plate, which is fixed to the side of each heat dissipation fin facing away from the substrate.

5. The piezoelectric fan air-cooled test platform according to claim 4, characterized in that, A mounting cavity for mounting the piezoelectric fan is formed between the duct cover and the substrate, and a ventilation hole is provided on the duct cover corresponding to the position of the mounting cavity.

6. The piezoelectric fan air-cooled test platform according to claim 4, characterized in that, One of the substrate and the duct cover is provided with a plug-in post, and the other of the substrate and the duct cover is provided with a plug-in hole, and the plug-in post is inserted into the plug-in hole.

7. The piezoelectric fan air-cooled test platform according to claim 3, characterized in that, A limiting groove is formed on the substrate, and the heating block is partially embedded in the limiting groove.

8. The piezoelectric fan air-cooled test platform according to claim 1, characterized in that, The piezoelectric fan air-cooled test platform also includes a heat insulation component, and the heating block is sandwiched between the heat insulation component and the heat sink.

9. The piezoelectric fan air-cooled test platform according to claim 8, characterized in that, The heat insulation component has a groove, and the heating block is embedded in the groove.

10. The piezoelectric fan air-cooled test platform according to claim 8, characterized in that, The thickness of the insulation component is between 5mm and 10mm.

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