Asynchronous fluid driving device and airflow driving method based on asynchronous vibration

Abstract

The invention belongs to the technical field of electronic equipment, and particularly relates to heat dissipation of electronic equipment. The invention provides an asynchronous fluid driving device. The asynchronous fluid driving device comprises an upper shell, a base, a connecting frame, a first resonator structure and a second resonator structure, the first resonator structure comprises a first elastic body, and a first vibration part a and a first vibration part b are arranged on the first elastic body; the second resonator structure comprises a second elastic body, and a second vibration part a and a second vibration part b are arranged on the second elastic body; the first elastic body and the second elastic body are driven to alternately deform through periodic vibration of the first resonator structure and the second resonator structure, so that external air is sucked in from the air inlet hole and discharged through the air outlet hole, heat generated by a heat source is taken away, the heat dissipation effect is achieved, the normal working temperature of the electronic equipment can be maintained, and the service life of the electronic equipment is prolonged. And the service life and stability of the electronic equipment are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic equipment, and particularly relates to heat dissipation of electronic equipment, and especially relates to an asynchronous fluid driving device and an airflow driving method based on asynchronous vibration. BACKGROUND

[0002] With the rapid increase of chip power consumption driven by 5G communication, AI and high-performance computing (HPC), and the limited heat dissipation space caused by the compression of device volume, efficient heat conduction needs to be achieved in limited space, and the traditional heat dissipation scheme is difficult to cope with. Statistics show that more than 50% of electronic equipment failures are caused by overheating. The device failure rate doubles every 10℃ increase in temperature. The working temperature of intelligent electronic equipment is too high, which may cause failure, and even affect performance and service life.

[0003] A piezoelectric element is a functional material or device that realizes the mutual conversion of electrical energy and mechanical energy by using the piezoelectric effect. When the material is subjected to mechanical pressure, an electric charge (positive piezoelectric effect) is generated. Conversely, when a voltage is applied, a deformation (inverse piezoelectric effect) is generated. Piezoelectric heat dissipation is to use the inverse piezoelectric effect of piezoelectric ceramic materials to generate deformation by exciting external electrical signals to realize heat dissipation function. With the continuous miniaturization of intelligent electronic equipment in recent years, the volume ratio of the heat dissipation device has also been reduced accordingly. Obviously, piezoelectric heat dissipation has higher and higher market value. The existing piezoelectric heat dissipation fan adopts a synchronous driving form. The fluid transmission of the synchronous driving piezoelectric fan is not continuous, and there is an exhaust interval. Therefore, the heat dissipation stability is poor, and in the high demand heat dissipation heat source use scenario, heat accumulation phenomenon is easy to occur.

[0004] Therefore, how to solve the heat accumulation caused by the gap in exhaust is a technical problem that needs to be solved in the field.

[0005] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background of the present application, and therefore, the above description is not considered to constitute prior art information. SUMMARY

[0006] The embodiments of the present application at least provide an asynchronous fluid driving device to solve the technical problem of heat accumulation caused by the gap in exhaust.

[0007] In a first aspect, embodiments of this disclosure provide an asynchronous fluid drive device, comprising: an upper shell having an air inlet on its surface; a base that is fastened to the upper shell to form a storage space, a support platform being provided on the side of the base facing the heat source, and an air outlet being provided; a connecting frame being disposed within the storage space; and a first resonator structure being disposed between the base and the connecting frame, with air duct gaps provided on the adjacent surfaces of the resonator and the base; the first resonator structure includes a first elastic body, on which a first vibrating part a and a first vibrating part b are provided, and an clearance groove is provided on the side of the first elastic body facing the base. When the body deforms towards the base during vibration, it avoids the edge of the groove to prevent gas backflow; the second resonator structure is disposed between the upper shell and the connecting frame, and air duct gaps are left on the adjacent surfaces of the upper shell; the second resonator structure includes a second elastic body, on which a second vibration part a and a second vibration part b are disposed; wherein, the first vibration part a, the first vibration part b, the second vibration part a and the second vibration part b are configured to: trigger high-frequency deformation of the elastic body by alternating high-frequency vibration, thereby drawing in outside air from the air inlet and discharging it through the air outlet, so that at least one row of air outlets is in the state of discharging airflow.

[0008] In one optional embodiment, the first vibration part a includes a first piezoelectric ceramic sheet a, and a first FPCB circuit a is disposed on the side of the first piezoelectric ceramic sheet a facing the upper shell; the first vibration part b includes a first piezoelectric ceramic sheet b, and a first FPCB circuit b is disposed on the side of the first piezoelectric ceramic sheet b facing the upper shell; the second vibration part a includes a second piezoelectric ceramic sheet a, and a second FPCB circuit a is disposed on the side of the second piezoelectric ceramic sheet a facing the base; the second vibration part b includes a second piezoelectric ceramic sheet b, and a second FPCB circuit b is disposed on the side of the second piezoelectric ceramic sheet b facing the base.

[0009] In one optional embodiment, the first elastic body has a first separating through hole between the first vibrating part a and the first vibrating part b, which is adapted to allow a portion of the fluid to converge between the first vibrating part a and the first vibrating part b; the second elastic body has a second separating through hole between the second vibrating part a and the second vibrating part b, which is adapted to allow a portion of the fluid to converge between the second vibrating part a and the second vibrating part b.

[0010] In one optional embodiment, a first gap is provided between the first vibrating part a and the first vibrating part b, the gap being fixed to the lower boss of the base on the side facing the base and to the middle boss of the connecting frame on the side facing the connecting frame. The first gap is adapted to separate the air duct on the first resonator structure. A second gap is provided between the second vibrating part a and the second vibrating part b, the gap being fixed to the upper boss of the upper shell on the side facing the upper shell and to the middle boss of the connecting frame on the side facing the connecting frame. The second gap is adapted to separate the air duct on the second resonator structure.

[0011] In one optional embodiment, the base is provided with a pair of limiting posts facing the second elastic body, and the upper shell is provided with limiting holes adapted to the limiting posts. The first elastic body, the connecting frame and the second elastic body are all provided with clearance holes adapted to the limiting posts. The limiting posts are configured to pass through the clearance holes and the limiting holes in sequence to restrict the first elastic body, the connecting frame and the second elastic body between the upper shell and the base.

[0012] In one optional embodiment, both the first elastomer and the second elastomer are provided with vent holes; vent holes are formed between the two sides of the first elastomer and the second elastomer and the sides of the upper shell and the base.

[0013] An airflow driving method based on asynchronous vibration, applied to the asynchronous fluid driving device as described above, includes the following steps: 1. Applying electrical signals with phase differences to the first vibration part a, the first vibration part b, the second vibration part a, and the second vibration part b respectively through an external circuit; 2. The high-frequency vibration of the piezoelectric ceramic sheet is transmitted to the first elastic body and the second elastic body, causing the first vibration part a, the first vibration part b, the second vibration part a, and the second vibration part b to deform alternately, compressing or expanding the gap between them and the adjacent air duct through deformation; 3. The air duct gap generates a periodic pressure difference due to the deformation of the first elastic body and the second elastic body, forming a directional vibration airflow between the upper shell and the connecting frame, and between the base and the connecting frame, and finally discharging to the outside of the device through at least one row of air holes.

[0014] In one alternative implementation, when the first elastomer vibrates and deforms toward the side of the base, the edge of its clearance groove dynamically fits against the top surface of the base, blocking the return path of gas to the heat source side and ensuring that the airflow is discharged in one direction.

[0015] The beneficial effects of this invention are as follows: This invention provides an asynchronous fluid drive device, which, through the periodic vibration of the first and second resonator structures, drives the first and second elastic bodies to deform alternately. This draws in outside air through the air inlet and discharges it through the air outlet, carrying away the heat generated by the heat source and achieving a heat dissipation effect. This helps maintain the normal operating temperature of electronic equipment and improves the service life and stability of the base device. The clearance groove on the side of the first elastic body facing the base allows its edge to form a seal with the top surface of the base when the elastic body deforms towards the base, preventing gas backflow and ensuring unidirectional airflow. This improves heat dissipation efficiency and prevents the discharged hot air from flowing back into the heat source. The proximity of the heat source affects heat dissipation. Each component is rationally arranged within the storage space formed by the upper shell and base. The first and second resonator structures have airflow gaps with their adjacent surfaces, making full use of the space and resulting in a compact structure that is easy to install and use. The device utilizes the vibration of the resonator structure to generate airflow for heat dissipation, eliminating reliance on traditional fans and other mechanical rotating parts, reducing mechanical wear and noise, and providing better reliability and quietness.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A perspective view of an asynchronous fluid drive device with a partitioned through-hole provided for an embodiment of this disclosure; Figure 2 A perspective cross-sectional view of an asynchronous fluid drive device with partitioned through holes provided in an embodiment of this disclosure; Figure 3 A perspective view of a first elastic body with a partitioned through hole provided in an embodiment of this disclosure; Figure 4 A perspective view of an asynchronous fluid drive device with a spacer provided in an embodiment of this disclosure; Figure 5 A perspective cross-sectional view of an asynchronous fluid drive device with a spacer provided in an embodiment of this disclosure; Figure 6 A perspective view of a first elastic body with a spacer portion provided in an embodiment of this disclosure; Figure 7 A perspective view of an asynchronous fluid drive device with a clearance hole provided for an embodiment of this disclosure; Figure 8 A perspective cross-sectional view of an asynchronous fluid drive device with a clearance hole provided in an embodiment of this disclosure; Figure 9 This is a perspective view of a first elastomer with a clearance hole provided in an embodiment of this disclosure.

[0020] In the picture: 1. Base; 11. Vent; 12. Support platform; 13. Lower boss; 2. First resonator structure; 21. First elastic body; 22. First vibrating part a; 221. First piezoelectric ceramic sheet a; 222. First FPCB circuit a; 23. First vibrating part b; 231. First piezoelectric ceramic sheet b; 232. First FPCB circuit b; 24. First separating through hole; 25. First spacing part; 26. Clearance groove; 3. Connecting frame; 31. Middle boss; 4. Second resonator structure; 41. Second elastic body; 42. Second vibration part a; 421. Second piezoelectric ceramic sheet a; 422. Second FPCB circuit a; 43. Second vibration part b; 431. Second piezoelectric ceramic sheet b; 432. Second FPCB circuit b; 44. Second partition through hole; 45. Second spacer part; 5. Upper shell; 51. Air inlet; 52. Upper boss; 53. Limiting hole; 6. Vent holes; 7. Limiting post; 8. Clearance hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] Research has revealed the following drawbacks of existing technologies: Piezoelectric elements are functional materials or devices that utilize the piezoelectric effect to convert electrical energy into mechanical energy. When the material is subjected to mechanical pressure, it generates an electric charge (positive piezoelectric effect), and conversely, when a voltage is applied, it deforms (inverse piezoelectric effect). Piezoelectric heat dissipation utilizes the inverse piezoelectric effect of piezoelectric ceramic materials, using external electrical signals to excite the piezoelectric ceramic to deform and achieve heat dissipation. With the continuous miniaturization of intelligent electronic devices in recent years, the volume of heat dissipation devices has also decreased accordingly. Obviously, piezoelectric heat dissipation has an increasingly high market value. Existing piezoelectric cooling fans mostly adopt synchronous drive. Synchronous drive piezoelectric fans have intermittent fluid transmission and exhaust intervals, resulting in poor heat dissipation stability. In high-demand heat source usage scenarios, heat accumulation is prone to occur.

[0027] Therefore, how to solve the problem of heat accumulation caused by gaps in the exhaust is a technical problem that urgently needs to be solved in this field.

[0028] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0029] 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.

[0030] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] like Figures 1 to 9 As shown, some embodiments provide an asynchronous fluid drive device, including: an upper shell 5 with an air inlet 51 on its surface; a base 1 that is fastened to the upper shell 5 to form a storage space, a support platform 12 on the side of the base 1 facing the heat source, and an air outlet 11; the upper shell 5 and the base 1 form an outer shell structure; the upper shell 5 has an air inlet 51 on its surface, and the base 1 has a support platform 12 on the side facing the heat source, and an air outlet 11; wherein the air inlet 51 allows external gas to enter the device, forming an airflow input path; the support platform 12 is used to support the heat source (such as a chip or heating element), ensuring that the airflow can directly act on the surface of the heat source; the air outlet 11 is used to discharge the driven airflow, realize heat dissipation or gas delivery, provide a stable gas inlet and outlet, and ensure efficient airflow circulation; the support platform 12 optimizes the contact between the heat source and the airflow, improving heat dissipation efficiency.

[0032] In addition, the outer shell structure, together with the first resonator structure 2 and the second resonator structure 4, forms a gap in the air duct, which allows the vibrating airflow to flow in a directional manner.

[0033] Furthermore, the outer shell structure cooperates with the limiting post 7 and the limiting hole 53 to ensure the overall structural stability.

[0034] The connecting frame 3 is set in the storage space. The first resonator structure 2 is set between the upper shell 5 and the connecting frame 3, and air duct gaps are left on the adjacent surfaces of the upper shell 5 and the base 1. The connecting frame 3 serves as an intermediate support structure. The entire structure is set in the storage space to separate the first resonator structure 2 and the second resonator structure 4.

[0035] The connecting frame 3 provides mechanical support, ensuring independent vibration space between the first resonator structure 2 (near the base 1) and the second resonator structure 4 (near the upper shell 5). Additionally, the central boss 31 on the connecting frame 3 cooperates with the first spacing portion 25 and the second spacing portion 45 to further separate the air ducts and prevent airflow interference. Together with the first resonator structure 2 and the second resonator structure 4, it forms a double-layer vibration structure to achieve asynchronous drive. It also cooperates with the limiting post 7 and the clearance hole 8 to maintain overall structural stability. In other words, it prevents mutual interference between the resonators and improves vibration efficiency. The central boss 31 optimizes the air duct separation, ensuring directional airflow. The first resonator structure 2 includes a first elastic body 21, on which a first vibration part a22 and a first vibration part b23 are provided; the second resonator structure 4 is disposed between the base 1 and the upper shell 5, and air duct gaps are left on the adjacent surfaces of the second resonator structure 4 and the upper shell 5. A clearance groove 26 is provided on the side of the first elastic body 21 facing the base 1. When the elastic body deforms in the direction of the base 1 during vibration, the edge of the clearance groove 26 prevents gas backflow.

[0036] The first resonator structure 2 serves as the upper vibration unit, and includes a first elastic body 21 on which a first vibration part a22 and a first vibration part b23 are disposed, with a first separating through hole 24 and a first spacing part 25 between them.

[0037] The first elastic body 21 (such as silicone, PDMS and other flexible materials) undergoes high-frequency deformation (≥100Hz) driven by the piezoelectric ceramic sheets (first piezoelectric ceramic sheet a221 and first piezoelectric ceramic sheet b231), squeezing or expanding the air duct gap to form a periodic pressure difference.

[0038] The first vibration part a22 and the first vibration part b23 are driven by the first piezoelectric ceramic sheet a221 and the first piezoelectric ceramic sheet b231 respectively, and vibrate alternately, so that the airflow flows in a direction within the air duct gap between the base 1 and the connecting frame 3.

[0039] The first dividing through-hole 24 allows some fluid to converge between the two vibrating parts, optimizing the airflow distribution.

[0040] The first partition 25 (the lower boss 13 of the connecting base 1 and the middle boss 31 of the connecting frame 3) separates the air duct to prevent airflow from short-circuiting.

[0041] The first resonator structure 2 and the second resonator structure 4 vibrate asynchronously (at different frequencies or with different phases) to form a directional airflow; in conjunction with the first spacer 25 and the intermediate boss 31, the stability of the air duct is ensured; the overall heat dissipation or gas delivery efficiency is improved; and the airflow path is optimized by separating the through holes and the spacer to prevent turbulence or backflow.

[0042] The second resonator structure 4 includes a second elastic body 41, on which a second vibration part a42 and a second vibration part b43 are provided. The first vibration part a22, the first vibration part b23, the second vibration part a42 and the second vibration part b43 are configured to trigger high-frequency deformation of the elastic body by alternating vibration, so as to form a vibrating airflow in the air duct gap, so that at least one row of air holes 11 is in the state of exhaust airflow.

[0043] The second resonator structure 4 serves as the lower vibration unit, and includes a second elastic body 41 on which a second vibration part a42 and a second vibration part b43 are disposed.

[0044] The second elastic body 41 (similar to the first elastic body 21) undergoes high-frequency deformation under the drive of the second piezoelectric ceramic sheet a421 and the second piezoelectric ceramic sheet b431, squeezing or expanding the air duct gap to form a periodic pressure difference.

[0045] The second vibrating part a42 and the second vibrating part b43 vibrate alternately, causing the airflow to flow in a directional manner within the air duct gap between the upper shell 5 and the connecting frame 3.

[0046] The second dividing through-hole 44 and the second spacer 45 (connecting the middle boss 31 of the connecting frame 3 and the upper boss 52 of the upper shell 5) optimize airflow distribution and separate the air ducts; together with the first resonator structure 2, they form a double-layer vibration structure (upper layer + lower layer) to enhance airflow driving force and improve overall efficiency. The first vibration unit a22 includes a first piezoelectric ceramic sheet a221, and a first FPCB circuit a222 is disposed on the side of the first piezoelectric ceramic sheet a221 facing the upper shell 5; the first vibration unit b23 includes a first piezoelectric ceramic sheet b231, and a first FPCB circuit b232 is disposed on the side of the first piezoelectric ceramic sheet b231 facing the upper shell 5; the second vibration unit a42 includes a second piezoelectric ceramic sheet a421, and a second FPCB circuit a422 is disposed on the side of the second piezoelectric ceramic sheet a421 facing the base 1; the second vibration unit b43 includes a second piezoelectric ceramic sheet b431, and a second FPCB circuit b432 is disposed on the side of the second piezoelectric ceramic sheet b431 facing the base 1.

[0047] The driving unit consists of a piezoelectric ceramic sheet and an FPCB circuit, specifically: 1. a first vibration unit a22 (a first piezoelectric ceramic sheet a221 and a first FPCB circuit a222); 2. a first vibration unit b23 (a first piezoelectric ceramic sheet b231 and a first FPCB circuit b232); 3. a second vibration unit a42 (a second piezoelectric ceramic sheet a421 and a second FPCB circuit a422); 4. a second vibration unit b43 (a second piezoelectric ceramic sheet b431 and a second FPCB circuit b432).

[0048] The first elastic body 21 is provided with a first separating through hole 24 between the first vibrating part a22 and the first vibrating part b23, which is suitable for allowing some fluid to converge between the first vibrating part a22 and the first vibrating part b23; the second elastic body 41 is provided with a second separating through hole 44 between the second vibrating part a42 and the second vibrating part b43, which is suitable for allowing some fluid to converge between the second vibrating part a42 and the second vibrating part b43.

[0049] A first spacer 25 is provided between the first vibration part a22 and the first vibration part b23. Its top surface is connected to the middle boss 31 of the connecting frame 3, and its bottom surface is connected to the lower boss 13 of the base 1. The first spacer 25 is suitable for separating the air duct on the first resonator structure 2. A second spacer 45 is provided between the second vibration part a42 and the second vibration part b43. Its top surface is connected to the upper boss 52 of the outer shell 5, and its bottom surface is connected to the middle boss 31 of the connecting frame 3. The second spacer 45 is suitable for separating the air duct on the second resonator structure 4.

[0050] A pair of limiting posts 7 are provided on the base 1 facing the second elastic body 41. The upper shell 5 is provided with limiting holes 53 that are adapted to the limiting posts 7. The first elastic body 21, the connecting frame 3 and the second elastic body 41 are all provided with clearance holes 8 that are adapted to the limiting posts 7. The limiting posts 7 are configured to pass through the clearance holes 8 and the limiting holes 53 in sequence to restrict the first elastic body 21, the connecting frame 3 and the second elastic body 41 between the upper shell 5 and the base 1.

[0051] Both the first elastic body 21 and the second elastic body 41 are provided with vent holes 6.

[0052] Ventilation holes 6 are formed between the two sides of the first elastic body 21 and the second elastic body 41 and the sides of the upper shell 5 and the base 1.

[0053] In summary, this embodiment has the following beneficial effects: 1. Heat dissipation function: Through the alternating vibration of the first resonator structure 2 and the second resonator structure 4, the first elastic body 21 and the second elastic body 41 are triggered to deform at high frequency to form a vibrating airflow, which can cause at least one row of air holes 11 to discharge airflow, which can accelerate the airflow, carry away the heat generated by the heat source, play a heat dissipation role, help maintain the normal working temperature of the heat source, and improve the service life and stability of the equipment. To prevent gas backflow: The first elastic body 21 of the first resonator structure 2 has a relief groove 26 on the side facing the base 1. When the elastic body deforms in the direction of the base 1, its edge can form a blockage with the top surface of the base 1 to prevent gas backflow, ensuring unidirectional airflow, improving heat dissipation efficiency, and preventing the discharged hot airflow from flowing back to the vicinity of the heat source and affecting the heat dissipation effect. Compact structure: The upper shell 5, base 1, connecting frame 3, first resonator structure 2 and second resonator structure 4 are all reasonably arranged in the storage space formed by the upper shell 5 and base 1. The first resonator structure 2 and the second resonator structure 4 are respectively left with air duct gaps with adjacent surfaces, making full use of space, so that the entire device structure is relatively compact and easy to install and use. 4. Non-contact heat dissipation: The airflow generated by the vibration of the first resonator structure 2 and the second resonator structure 4 is used for heat dissipation. It does not rely on traditional mechanical rotating parts such as fans, which reduces mechanical wear and noise and has better reliability and quietness.

[0054] Some embodiments provide an airflow driving method based on asynchronous vibration, applied to the asynchronous fluid driving device as described above, including the following steps: 1. Applying electrical signals with different frequencies or controllable phase differences to the first vibration part a22, the first vibration part b23, the second vibration part a42, and the second vibration part b43 respectively through an external circuit; 2. The vibration of the piezoelectric ceramic sheet is transmitted to the first elastic body 21 and the second elastic body 41, causing the first vibration part a22, the first vibration part b23, the second vibration part a42, and the second vibration part b43 to alternately undergo high-frequency deformation with a deformation frequency ≥100Hz, compressing or expanding the gap between them and the adjacent air duct through deformation; 3. The gap between the air duct generates a periodic pressure difference due to the deformation of the first elastic body 21 and the second elastic body 41, forming a directional vibration airflow between the upper shell 5 and the connecting frame 3, and between the base 1 and the connecting frame 3, with an airflow velocity ≥0.5m / s, and finally discharged to the outside of the device through at least one row of air holes 11.

[0055] When the first elastic body 21 vibrates and deforms towards the side of the base 1, the edge of its clearance groove 26 dynamically fits against the top surface of the base 1 with a fitting gap of ≤0.1mm, blocking the return path of gas to the heat source side and ensuring that the airflow is discharged in one direction.

[0056] The relative positions of the first elastic body 21, the connecting frame 3, and the second elastic body 41 are fixed by the cooperation of the limiting post 7 and the clearance hole 8, ensuring the stability of the air duct gap and thus maintaining the continuity and directionality of airflow output.

[0057] In the description of the embodiments of the present invention, 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 the present invention based on the specific circumstances.

[0058] In the description of this invention, 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 the invention 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 the invention. 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 a second element, component, region, layer, or segment.

[0059] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention 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 (5) is provided with an air inlet (51); The base (1) is fastened to the upper shell (5) to form a storage space. A support platform (12) is provided on the side of the base (1) facing the heat source, and an air vent (11) is provided. The connecting frame (3) is set within the storage space. The first resonator structure (2) is set between the base (1) and the connecting frame (3), and a gap for air duct is left between the base (1) and the adjacent surface of the base (1); The first resonator structure (2) includes a first elastic body (21), on which a first vibration part a (22) and a first vibration part b (23) are provided. A clearance groove (26) is provided on the side of the first elastic body (21) facing the base (1). When the first vibration part a (22) and the first vibration part b (23) deform in the direction of the upper shell (5), the edge of the clearance groove (26) prevents gas backflow. The second resonator structure (4) is set between the upper shell (5) and the connecting frame (3), and a duct gap is left between the upper shell (5) and the adjacent surface of the upper shell (5); The second resonator structure (4) includes a second elastic body (41), on which a second vibration part a (42) and a second vibration part b (43) are provided. The first vibration part a (22), the first vibration part b (23), the second vibration part a (42) and the second vibration part b (43) are configured to: trigger the deformation of the elastic body by alternating high-frequency vibration to form a vibrating airflow in the air duct gap, so that at least one row of air holes (11) is in the state of exhaust airflow.

2. The asynchronous fluid drive device as described in claim 1, characterized in that, The first vibration part a (22) includes a first piezoelectric ceramic sheet a (221), and a first FPCB circuit a (222) is provided on the side of the first piezoelectric ceramic sheet a (221) facing the upper shell (5). The first vibration part b (23) includes a first piezoelectric ceramic sheet b (231), and a first FPCB circuit b (232) is provided on the side of the first piezoelectric ceramic sheet b (231) facing the upper shell (5). The second vibration part a (42) includes a second piezoelectric ceramic sheet a (421), and a second FPCB circuit a (422) is provided on the side of the second piezoelectric ceramic sheet a (421) facing the base (1). The second vibration part b (43) includes a second piezoelectric ceramic sheet b (431), and a second FPCB circuit b (432) is provided on the side of the second piezoelectric ceramic sheet b (431) facing the base (1).

3. The asynchronous fluid drive device as described in claim 2, characterized in that, The first elastic body (21) has a first separating through hole (24) between the first vibrating part a (22) and the first vibrating part b (23), which is suitable for allowing a portion of the fluid to converge between the first vibrating part a (22) and the first vibrating part b (23); The second elastic body (41) has a second separating through hole (44) between the second vibrating part a (42) and the second vibrating part b (43), which is suitable for allowing a portion of the fluid to converge between the second vibrating part a (42) and the second vibrating part b (43).

4. The asynchronous fluid drive device as described in claim 3, characterized in that, A first gap (25) is provided between the first vibration part a (22) and the first vibration part b (23). The side facing the base (1) is fixed to the lower boss (13) of the base (1), and the side facing the connecting frame (3) is fixed to the middle boss (31) of the connecting frame (3). The first gap (25) is adapted to separate the air duct on the first resonator structure (2). A second spacer (45) is provided between the second vibration part a (42) and the second vibration part b (43). The side facing the upper shell (5) is fixed to the upper boss (45) of the upper shell (5), and the side facing the connecting frame (3) is fixed to the middle boss (31) of the connecting frame (3). The second spacer (45) is adapted to separate the air duct on the second resonator structure (4).

5. The asynchronous fluid drive device as described in claim 4, characterized in that, The base (1) is provided with a pair of limiting posts (7) facing the second elastic body (41), and the upper shell (5) is provided with limiting holes (53) that are adapted to the limiting posts (7). The first elastic body (21), the connecting frame (3) and the second elastic body (41) are all provided with clearance holes (8) that are adapted to the limiting posts (7). The limiting post (7) is configured to pass through the clearance hole (8) and the limiting hole (53) in sequence to restrict the first elastic body (21), the connecting frame (3) and the second elastic body (41) between the upper shell (5) and the base (1).

6. The asynchronous fluid drive device according to any one of claims 1-5, characterized in that, Both the first elastic body (21) and the second elastic body (41) are provided with vent holes (6); Ventilation holes (6) are formed between the two sides of the first elastomer (21) and the second elastomer (41) and the sides of the upper shell (5) and the base (1).

7. A method for driving airflow based on asynchronous vibration, characterized in that, Applied to the asynchronous fluid drive device as described in any one of claims 6, comprising the following steps:

1. Apply electrical signals with phase differences to the first vibration part a (22), the first vibration part b (23), the second vibration part a (42) and the second vibration part b (43) respectively through external circuits; 2. The high-frequency vibration of the piezoelectric ceramic sheet is transmitted to the first elastic body (21) and the second elastic body (41), causing the first vibration part a (22), the first vibration part b (23), the second vibration part a (42) and the second vibration part b (43) to undergo high-frequency deformation alternately, and the deformation squeezes or expands the gap between them and the adjacent air duct.

3. Due to the deformation of the first elastic body (21) and the second elastic body (41), a periodic pressure difference is generated in the air duct gap, forming a directional vibration airflow between the upper shell (5) and the connecting frame (3) and between the base (1) and the connecting frame (3), which is eventually discharged to the outside of the device through at least one row of air holes (11).

8. The airflow driving method as described in claim 7, characterized in that, When the first elastomer (21) vibrates and deforms toward the side of the upper shell (5), the clearance groove (26) is adapted to block the return path of gas to the air inlet (51) and ensure that the airflow is discharged from the air outlet (11).

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