Asynchronous fluid drive

Abstract

The utility model belongs to the technical field of electronic equipment, especially electronic equipment heat dissipation, the utility model provides a kind of asynchronous fluid driving device, comprising: upper shell is provided with at least one column air inlet hole;Base, it is formed with the receiving space with upper shell buckle, base is provided with at least two columns of air outlet hole;Resonator structure is set in receiving space, and air duct is left in adjacent surface with upper shell and base;The resonator structure includes: elastomer, it has fixed area and vibration area, and the vibration area includes first vibration part and second vibration part;The utility model is by to first vibration part and second vibration part respectively into with periodic interval electric signal, make first vibration part and second vibration part produce asynchronous vibration, continuously and unceasingly from air outlet outlet of inhaled air, to reach the effect of heat dissipation cooling to heating device and electronic equipment.

Description

Technical Field

[0001] This utility model belongs to the field of electronic equipment technology, specifically relating to heat dissipation of electronic equipment, and particularly to an asynchronous fluid drive device. Background Technology

[0002] With the rapid development of 5G communication, AI and HPC, traditional air-cooled / heat pipe solutions are facing a bottleneck in heat transfer efficiency. Industry data shows that more than 50% of electronic device failures are caused by overheating. For every 10°C increase in temperature, the failure rate of devices increases exponentially, directly affecting performance stability and service life.

[0003] Piezoelectric cooling is based on the inverse piezoelectric effect: when an alternating voltage is applied to a piezoelectric ceramic material, the material will produce high-frequency mechanical deformation, driving the surrounding fluid to form forced convection. Compared with traditional fans, piezoelectric fans have advantages such as no electromagnetic interference, compact structure, and low energy consumption (power consumption is reduced by more than 30%), making them especially suitable for space-constrained scenarios.

[0004] However, the current mainstream piezoelectric fans adopt a synchronous drive mode. The periodic vibration of the piezoelectric sheet causes discontinuous fluid delivery and creates a heat accumulation window. The single vibration mode at the resonant frequency is prone to turbulent-laminar flow alternation. In non-uniform heat source scenarios such as 3D stacked chips, the temperature of the unheated area may rise sharply by 15-20℃, accelerating thermal fatigue failure.

[0005] Therefore, how to solve the problem of discontinuous fluid transport caused by periodic vibration is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one asynchronous fluid drive device to solve the technical problem of discontinuous fluid delivery caused by periodic vibration.

[0008] In a first aspect, embodiments of this disclosure provide an asynchronous fluid drive device, comprising: an upper shell having at least one row of air inlets; a base that is fastened to the upper shell to form a storage space, the base having at least two rows of air inlets; and a resonator structure disposed within the storage space, with air ducts provided on the surfaces adjacent to the upper shell and the base; the resonator structure comprising: an elastic body having a fixed region and a vibrating region, the fixed region being connected to the upper shell and the base respectively, and a vent being provided between the fixed region and the vibrating region; the vibrating region comprising a first vibrating part and a second vibrating part; wherein the first vibrating part and the second vibrating part are configured to vibrate alternately to form a vibrating airflow in the air duct, such that at least one row of air inlets is in a state of exhaust airflow.

[0009] In one alternative embodiment, a separating through hole is provided between the first vibrating part and the second vibrating part, which is suitable for allowing a portion of the fluid to converge between the first vibrating part and the second vibrating part.

[0010] In one optional embodiment, a spacer is provided between the first vibrating part and the second vibrating part. The side of the spacer facing the upper shell is fixed to the upper boss of the upper shell, and the side of the spacer facing the base is fixed to the lower boss of the base. The spacer is adapted to separate the air duct.

[0011] In one optional embodiment, the first vibrating part includes a first piezoelectric ceramic sheet with a first circuit disposed thereon; the second vibrating part includes a second piezoelectric ceramic sheet with a second circuit disposed thereon; wherein, the first piezoelectric ceramic sheet is connected to an electrical signal through the first circuit to drive the elastic body of the first vibrating part to deform, so that the elastic body of the second vibrating part is configured to remain unchanged or to deform in the opposite direction; the second piezoelectric ceramic sheet is connected to an electrical signal through the second circuit to drive the elastic body of the second vibrating part to deform, so that the elastic body of the first vibrating part is configured to remain unchanged or to deform in the opposite direction.

[0012] In one alternative embodiment, a clearance groove is provided on the side of the elastomer facing the base; wherein the first piezoelectric ceramic sheet or the second piezoelectric ceramic sheet is configured to vibrate, causing the elastomer to deform, and the elastomer prevents gas backflow when deforming toward the upper shell.

[0013] Secondly, this disclosure also provides an asynchronous fluid drive device, comprising: an upper shell having at least one row of air inlets on its surface; a base that is fastened to the upper shell to form a storage space, the base having at least two rows of air inlets on its side facing the heat source; and a resonator structure disposed within the storage space, with air ducts provided on the surfaces adjacent to the upper shell and the base; the resonator structure comprising: an elastic body having a fixed region and a vibration region, the fixed region being connected to the upper shell and the base respectively, and a vent hole being provided at the connection position between the fixed region and the vibration region; the vibration region comprising a first vibration part and a second vibration part, with clearance grooves provided on the side of the first vibration part and the second vibration part facing the base; wherein the first vibration part and the second vibration part are configured to vibrate alternately, causing the elastic body to deform, and when the elastic body deforms toward the upper shell, the clearance grooves prevent gas backflow and ensure that at least one row of air inlets is in a state of exhaust airflow.

[0014] In one alternative embodiment, a separating through hole is provided between the first vibrating part and the second vibrating part, which is suitable for allowing a portion of the fluid to converge between the first vibrating part and the second vibrating part.

[0015] In one optional embodiment, a spacer is provided between the first vibrating part and the second vibrating part. The side of the spacer facing the upper shell is fixed to the upper boss of the upper shell, and the side of the spacer facing the base is fixed to the lower boss of the base. The spacer is adapted to separate the air duct.

[0016] In one optional embodiment, the first vibrating part includes a first piezoelectric ceramic sheet with a first circuit disposed thereon; the second vibrating part includes a second piezoelectric ceramic sheet with a second circuit disposed thereon; wherein, the first piezoelectric ceramic sheet is connected to an electrical signal through the first circuit to drive the elastic body of the first vibrating part to deform, so that the elastic body of the second vibrating part is configured to remain unchanged or to deform in the opposite direction; the second piezoelectric ceramic sheet is connected to an electrical signal through the second circuit to drive the elastic body of the second vibrating part to deform, so that the elastic body of the first vibrating part is configured to remain unchanged or to deform in the opposite direction.

[0017] In one alternative implementation, the base is supported against a heat source via a support platform.

[0018] The beneficial effect of this utility model is that it provides an asynchronous fluid drive device, which, by setting a first vibration part and a second vibration part, allows the intake air to be accelerated by the resonator structure and discharged from the air outlet. The discharged high-speed airflow blows towards the heat source in the electronic device, causing the electrical signal to be changed and this process to repeat. This can carry away the heat generated by the heat source through uninterrupted airflow, thereby achieving the effect of heat dissipation and cooling of the heat-generating device and electronic device.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A cross-sectional view of an asynchronous fluid drive device provided in an embodiment of this disclosure; Figure 2 An exploded view of an asynchronous fluid drive device provided in an embodiment of this disclosure; Figure 3 An exploded view of a resonator structure with partitioned through-holes provided in an embodiment of this disclosure; Figure 4 A perspective view of an elastomer with partitioned through holes provided in an embodiment of this disclosure; Figure 5 An exploded view of a resonator structure with a spacer provided in an embodiment of this disclosure; Figure 6 A perspective view of an elastomer with a spacer provided in an embodiment of this disclosure.

[0023] In the picture: 1. Base; 11. Vent; 12. Lower boss; 13. Support platform; 2. Resonator structure; 21. Elastic body; 22. Fixed area; 23. Vibration area; 23a. First vibration part; 231a. First piezoelectric ceramic sheet; 232a. First FPCB circuit; 23b. Second vibration part; 231b. Second piezoelectric ceramic sheet; 232b. Second FPCB circuit; 24. Vent hole; 25. Separating through hole; 26. Spacing part; 27. Clearance groove; 3. Upper shell; 31. Air inlet; 32. Upper boss; 4. Heat source. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed the shortcomings of existing technologies: piezoelectric heat dissipation is based on the inverse piezoelectric effect: when an alternating voltage is applied to a piezoelectric ceramic material, the material will produce high-frequency mechanical deformation, driving the surrounding fluid to form forced convection. Compared with traditional fans, piezoelectric fans have advantages such as no electromagnetic interference, compact structure, and low energy consumption, making them particularly suitable for space-constrained scenarios.

[0030] However, the current mainstream piezoelectric fans adopt a synchronous drive mode. The periodic vibration of the piezoelectric sheet causes discontinuous fluid delivery and creates a heat accumulation window. The single vibration mode at the resonant frequency is prone to turbulent-laminar flow alternation. In non-uniform heat source scenarios such as 3D stacked chips, the temperature of the unheated area may rise sharply by 15-20℃, accelerating thermal fatigue failure.

[0031] Therefore, how to solve the problem of discontinuous fluid transport caused by periodic vibration is a technical problem that urgently needs to be solved in this field.

[0032] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] like Figures 1 to 6 As shown, some embodiments provide an asynchronous fluid drive device, including: an upper shell 3, the surface of which is provided with at least one row of air inlets 31; the upper shell 3 serves as the top structure of the device, the air inlets 31 are arrayed to achieve multi-channel gas input, the lower surface edge of the upper shell 3 has an integral protruding design, the porous design reduces air intake resistance, and forms a distributed airflow network with the air duct. A pressure difference is formed with the vibration region of the resonator 2 to drive the airflow.

[0036] The base 1 is fastened to the upper shell 3 to form a storage space. The lower surface of the base 1 is provided with at least two rows of air holes 11. The two rows of air holes on the base 1 form a cross airflow path with the air inlet 31, and the airflow is output through a two-phase exhaust design (each row of holes corresponds to a vibrating part).

[0037] The resonator structure 2 is housed within the storage space, with ventilation channels provided on its adjacent surfaces to the upper shell 3 and the base 1. The resonator structure 2 includes an elastic body 21 with a fixed region 22 and a vibration region 23. The vibration region 23 can achieve μm-level amplitude, while the fixed region 22 ensures energy transfer efficiency >92%. The fixed region 22 is connected to both the upper shell 3 and the base 1. A vent 24 is provided at the connection point between the fixed region and the vibration region 23. The vent 24 is used to balance the cavity pressure and prevent the formation of vibration dead zones. It works in conjunction with the clearance groove 27 to form a one-way valve effect.

[0038] The vibration region 23 includes a first vibration part 23a and a second vibration part 23b; wherein the first vibration part 23a and the second vibration part 23b are configured to vibrate alternately to form a vibrating airflow in the air duct, so that at least one row of air holes 11 is in the state of exhaust airflow.

[0039] A separation through-hole 25 is provided between the first vibration part 23a and the second vibration part 23b, which is suitable for allowing some fluid to converge between the first vibration part 23a and the second vibration part 23b. The separation through-hole 25 generates a vortex effect, which increases the airflow mixing degree by 40% and reduces the boundary layer resistance.

[0040] A spacer 26 is provided between the first vibrating part 23a and the second vibrating part 23b. Its top surface is connected to the upper boss 32 of the upper shell 3, and its bottom surface is connected to the lower boss 12 of the base 1. The spacer 26 is suitable for separating the air duct. The spacer 26 divides the air duct into independent chambers, thereby improving the airflow directionality by 35%. It forms an acoustic impedance match with the boss.

[0041] The first vibration unit 23a includes a first piezoelectric ceramic sheet 231a, on which a first FPCB circuit 232a is disposed; the second vibration unit 23b includes a second piezoelectric ceramic sheet 231b, on which a second FPCB circuit 232b is disposed; wherein, the FPCB circuit is programmable to control the vibration waveform and supports PWM modulation; and forms an impedance matching network with the piezoelectric ceramic.

[0042] Specifically, the first piezoelectric ceramic sheet 231a is connected to an electrical signal through the first FPCB circuit 232a to drive the elastic body 21 of the first vibration part 23a to deform, so that the elastic body 21 of the second vibration part 23b is configured to remain unchanged or to deform in the opposite direction; the second piezoelectric ceramic sheet 231b is connected to an electrical signal through the second FPCB circuit 232b to drive the elastic body 21 of the second vibration part 23b to deform, so that the elastic body 21 of the first vibration part 23a is configured to remain unchanged or to deform in the opposite direction.

[0043] An avoidance groove 27 is provided on the side of the elastomer 21 facing the base 1; wherein, the first piezoelectric ceramic sheet 231a or the second piezoelectric ceramic sheet is configured to vibrate, causing the elastomer 21 to deform, and when the elastomer 21 deforms in the direction of the upper shell 3, it prevents gas backflow.

[0044] An external electrical signal is first connected to the first piezoelectric ceramic plate 231a on the first vibrating part 23a through the first FPCB circuit 232a. When excited by the electrical signal, the piezoelectric ceramic plate 231a will generate a corresponding vibration mode, causing the elastic body 21 at the position of the first vibrating part 23a to deform towards the upper shell 3. After adjusting the electrical signal, the elastic body 21 at the position of the first vibrating part 23a will deform towards the base 1. At the same time, the second FPCB circuit 232b introduces another electrical signal into the second vibrating part 23b. When excited by the electrical signal, the second piezoelectric ceramic plate 231b on the second vibrating part 23b will generate a corresponding vibration mode, causing the elastic body 21 at the position of the second vibrating part 23b to deform towards the upper shell 3. The electrical signal is changed and repeated. The air drawn in is accelerated by the resonator and discharged from the air outlet 11. The high-speed airflow blows continuously towards the heat source in the electronic device, which can carry away the heat generated by the heat source through the airflow, so as to achieve the effect of heat dissipation and cooling of the heat-generating device and electronic device.

[0045] Some embodiments provide an asynchronous fluid drive device, including: an upper shell 3, the surface of which is provided with at least one row of air inlets 31; a base 1, which is fastened to the upper shell 3 to form a storage space, the side of the base 1 facing the heat source 4 is provided with at least two rows of air inlets 11, and the base 1 is abutted against the heat source 4 by a support platform 13. The resonator structure 2 is set in the storage space and has air ducts on the adjacent surfaces of the upper shell 3 and the base 1. The resonator structure 2 includes: an elastic body 21, which has a fixed area 22 and a vibration area 23. The fixed area 22 is connected to the upper shell 3 and the base 1 respectively. A vent 24 is provided at the connection position between the fixed area and the vibration area 23. The vibration zone 23 includes a first vibration section 23a and a second vibration section 23b. A clearance groove 27 is provided on the side of the first vibration section 23a and the second vibration section 23b facing the base 1. The first vibration section 23a and the second vibration section 23b are configured to vibrate alternately, causing the elastic body 21 to deform. When the elastic body 21 deforms in the direction of the upper shell 3, it forms a blockage with its top surface to prevent gas backflow and to make at least one row of vent holes 11 in the state of exhaust airflow.

[0046] A separation through hole 25 is provided between the first vibration part 23a and the second vibration part 23b, which is suitable for allowing a portion of the fluid to converge between the first vibration part 23a and the second vibration part 23b.

[0047] A spacer 26 is provided between the first vibration part 23a and the second vibration part 23b. Its top surface is connected to the upper boss 32 of the upper shell 3, and its bottom surface is connected to the lower boss 12 of the base 1. The spacer 26 is suitable for separating the air duct.

[0048] The first vibration unit 23a includes a first piezoelectric ceramic sheet 231a, on which a first FPCB circuit 232a is disposed; the second vibration unit 23b includes a second piezoelectric ceramic sheet 231b, on which a second FPCB circuit 232b is disposed; wherein, the first piezoelectric ceramic sheet 231a is connected to an electrical signal through the first FPCB circuit 232a to drive the elastic body 21 of the first vibration unit 23a to deform, so that the elastic body 21 of the second vibration unit 23b is configured to remain unchanged or to deform in the opposite direction; The second piezoelectric ceramic sheet 231b is connected to an electrical signal through the second FPCB circuit 232b to drive the elastic body 21 of the second vibration part 23b to deform, so that the elastic body 21 of the first vibration part 23a is configured to remain unchanged or to deform in the opposite direction.

[0049] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0050] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0051] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An asynchronous fluid drive device, characterized in that, include: The upper shell (3) is provided with at least one row of air inlets (31); The base (1) is fastened to the upper shell (3) to form a storage space, and the base (1) is provided with at least two rows of air holes (11). The resonator structure (2) is set in the storage space, and air ducts are left on the adjacent surfaces of the upper shell (3) and the base (1); The resonator structure (2) includes: An elastomer (21) has a fixed area (22) and a vibration area (23). The fixed area (22) is connected to the upper shell (3) and the base (1) respectively. A vent hole (24) is provided between the fixed area (22) and the vibration area (23). The vibration region (23) includes a first vibration part (23a) and a second vibration part (23b). The first vibration part (23a) and the second vibration part (23b) are configured to vibrate alternately, so that at least one row of air holes (11) is in the state of discharging airflow.

2. The asynchronous fluid drive device as described in claim 1, characterized in that, A separation through hole (25) is provided between the first vibration part (23a) and the second vibration part (23b), which is suitable for allowing a portion of the fluid to converge between the first vibration part (23a) and the second vibration part (23b).

3. The asynchronous fluid drive device as described in claim 1, characterized in that, A spacer (26) is provided between the first vibration part (23a) and the second vibration part (23b). The spacer (26) is fixed to the upper boss (32) of the upper shell (3) on the side facing the upper shell (3) and to the lower boss (12) of the base (1) on the side facing the base (1). The spacer (26) is suitable for separating the air duct.

4. The asynchronous fluid drive device as described in claim 2 or 3, characterized in that, The first vibration part (23a) includes a first piezoelectric ceramic sheet (231a), and a first FPCB circuit (232a) is disposed on the first piezoelectric ceramic sheet (231a). The second vibration part (23b) includes a second piezoelectric ceramic sheet (231b), on which a second FPCB circuit (232b) is disposed; The first piezoelectric ceramic sheet (231a) is connected to an electrical signal through the first FPCB circuit (232a) to drive the elastic body (21) of the first vibration part (23a) to deform, so that the elastic body (21) of the second vibration part (23b) is configured to remain unchanged or to deform in the opposite direction. The second piezoelectric ceramic sheet (231b) is connected to an electrical signal through the second FPCB circuit (232b) to drive the elastic body (21) of the second vibration part (23b) to deform, so that the elastic body (21) of the first vibration part (23a) is configured to remain unchanged or to deform in the opposite direction.

5. The asynchronous fluid drive device as described in claim 4, characterized in that, An clearance groove (27) is provided on the side of the elastomer (21) facing the base (1); The first piezoelectric ceramic sheet (231a) or the second piezoelectric ceramic sheet (231b) is configured to vibrate, causing the elastomer (21) to deform, and when the elastomer (21) deforms toward the upper shell (3), it prevents gas backflow.

6. An asynchronous fluid drive device, characterized in that, include: The upper shell (3) is provided with at least one row of air inlets (31); The base (1) is fastened to the upper shell (3) to form a storage space. At least two rows of vents (11) are provided on the side of the base (1) facing the heat source (4). The resonator structure (2) is set in the storage space and has air ducts on the adjacent surfaces of the upper shell (3) and the base (1); The resonator structure (2) includes: An elastomer (21) has a fixed region (22) and a vibration region (23). The fixed region (22) is connected to the upper shell (3) and the base (1) respectively. A vent hole (24) is provided between the fixed region (22) and the vibration region (23). The vibration area (23) includes a first vibration part (23a) and a second vibration part (23b), and a clearance groove (27) is provided on the side of the first vibration part (23a) and the second vibration part (23b) facing the base (1). The first vibration part (23a) and the second vibration part (23b) are configured to vibrate alternately to deform the elastic body (21). When the elastic body (21) deforms toward the upper shell (3), the clearance groove (27) prevents gas backflow and makes at least one row of vent holes (11) in the state of exhaust gas flow.

7. The asynchronous fluid drive device as described in claim 6, characterized in that, A separation through hole (25) is provided between the first vibration part (23a) and the second vibration part (23b), which is suitable for allowing a portion of the fluid to converge between the first vibration part (23a) and the second vibration part (23b).

8. The asynchronous fluid drive device as described in claim 6, characterized in that, A spacer (26) is provided between the first vibration part (23a) and the second vibration part (23b). The spacer (26) is fixed to the upper boss (32) of the upper shell (3) on the side facing the upper shell (3) and to the lower boss (12) of the base (1) on the side facing the base (1). The spacer (26) is suitable for separating the air duct.

9. The asynchronous fluid drive device as described in claim 7 or 8, characterized in that, The first vibration part (23a) includes a first piezoelectric ceramic sheet (231a), and a first FPCB circuit (232a) is disposed on the first piezoelectric ceramic sheet (231a). The second vibration part (23b) includes a second piezoelectric ceramic sheet (231b), on which a second FPCB circuit (232b) is disposed; The first piezoelectric ceramic sheet (231a) is connected to an electrical signal through the first FPCB circuit (232a) to drive the elastic body (21) of the first vibration part (23a) to deform, so that the elastic body (21) of the second vibration part (23b) is configured to remain unchanged or to deform in the opposite direction. The second piezoelectric ceramic sheet (231b) is connected to an electrical signal through the second FPCB circuit (232b) to drive the elastic body (21) of the second vibration part (23b) to deform, so that the elastic body (21) of the first vibration part (23a) is configured to remain unchanged or to deform in the opposite direction.

10. The asynchronous fluid drive device as claimed in claim 6, characterized in that, The base (1) is against the heat source (4) via the support platform (13).

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