Synthetic jet actuator modules, assemblies, heat dissipation systems, temperature control devices and methods

Abstract

The application discloses a synthetic jet actuator module, an assembly, a heat dissipation system, a temperature control device and a method. The synthetic jet actuator module comprises a shell, a vibrating diaphragm, a piezoelectric sheet and a flow guide structure. The shell forms a closed inner cavity inside. The piezoelectric sheet drives the vibrating diaphragm to reciprocate to change the volume of the inner cavity, so that the airflow is alternately inhaled and sprayed through the nozzle of the flow guide structure. When sprayed, a vortex ring jet is formed. The flow guide structure is configured to direct the jet direction of the nozzle towards the surface of the condenser fin to destroy the air boundary layer on the surface of the fin. A plurality of synthetic jet actuator modules are arranged in an array on a support to form an assembly. The assembly is arranged on the air inlet side of the condenser, and a fan is arranged on the air outlet side of the condenser. The synthetic jet actively destroys the boundary layer, and the fan forcibly convects to achieve synergistic effect. The heat resistance is significantly broken, the convective heat transfer coefficient is greatly improved, the refrigeration power is improved, the heat dissipation performance and low noise operation are considered, and the device is miniaturized.

Description

Technical Field

[0001] This invention relates to the field of temperature control equipment technology, and in particular to a synthetic jet exciter module, assembly, heat dissipation system, temperature control equipment and method. Background Technology

[0002] Condensers in temperature control equipment such as air conditioners and liquid chillers typically employ a finned structure combined with a forced convection fan. Taking an air conditioner outdoor unit as an example, the fan is installed at the air outlet. Air is drawn in through the inlet, flows through the channels between the condenser fins, and is then discharged from the outlet, carrying away the condensed heat. However, with the miniaturization of equipment and the increase in power density, the heat dissipation requirements of the condenser are increasing. Traditionally, this has been addressed by increasing the condenser area or increasing the fan speed to improve heat dissipation capacity. However, this leads to a significant increase in equipment size or a sharp rise in noise, making it difficult to meet the development requirements of miniaturization and low noise in temperature control equipment. In other words, it is difficult to balance size and heat dissipation capacity.

[0003] Through in-depth research, the inventors discovered that the root cause of the aforementioned contradiction lies in the fact that, under forced convection conditions, a laminar lower air boundary layer with near-zero flow velocity always exists on the surface of the condenser fins. This boundary layer has an extremely low thermal conductivity, which is the main bottleneck restricting the improvement of convective heat transfer efficiency. In other words, neither increasing the condenser area nor increasing the fan speed can effectively eliminate the thermal resistance of this boundary layer. The improvement in heat dissipation efficiency is essentially limited by the obstruction of convective heat transfer by the boundary layer on the fin surface. Therefore, existing temperature control devices, under size constraints, struggle to overcome the limitations of the air boundary layer thermal resistance on the condenser fin surface to balance heat dissipation performance and low-noise operation. Summary of the Invention

[0004] The embodiments of the present invention provide a synthetic jet exciter module, assembly, heat dissipation system, temperature control device and method, which aim to solve the problem that existing temperature control devices are difficult to overcome the thermal resistance of the air boundary layer on the surface of condenser fins under the condition of limited size in order to balance heat dissipation performance and low noise operation.

[0005] In a first aspect, the present invention provides a synthetic jet exciter module for heat dissipation of condenser fins, the synthetic jet exciter module comprising: A housing, wherein a sealed internal cavity is formed inside the housing; A vibrating diaphragm is disposed on the housing and forms at least a portion of the cavity wall of the inner cavity; A piezoelectric element is attached and fixed to the vibrating diaphragm to drive the vibrating diaphragm to reciprocate and change the volume of the inner cavity. A flow guiding structure is provided on the housing, the flow guiding structure having a through-hole connecting the inner cavity and a nozzle connecting the outside; when the volume of the inner cavity changes, the airflow is drawn in or ejected through the nozzle, and when ejected, a vortex ring jet is formed; The flow guiding structure is configured such that the jet direction of the nozzle is directed toward the surface of the fin.

[0006] Secondly, the present invention also provides a synthetic jet exciter module assembly, including a support and a plurality of synthetic jet exciter modules, wherein the synthetic jet exciter modules are the synthetic jet exciter modules described above, and the plurality of synthetic jet exciter modules are arranged in an array on the support.

[0007] Thirdly, the present invention also provides a heat dissipation system, including a condenser, a fan, and a synthetic jet exciter module assembly, wherein the condenser has fins, and the synthetic jet exciter module assembly is the aforementioned synthetic jet exciter module assembly; wherein the synthetic jet exciter module assembly is disposed on the air inlet side of the condenser, the fan is disposed on the air outlet side of the condenser or the air inlet side of the synthetic jet exciter module assembly, and the jetting direction of the nozzle of the synthetic jet exciter module assembly is toward the fin surface of the condenser.

[0008] Fourthly, the present invention also provides a temperature control device, comprising: The housing is provided with an air inlet and an air outlet; A heat dissipation system, wherein the heat dissipation system is as described above, and the heat dissipation system is disposed inside the outer casing; An airflow channel is formed between the air inlet, the condenser, and the air outlet.

[0009] Fifthly, the present invention also provides a control method for a temperature control device, wherein the temperature control device is the aforementioned temperature control device, and the control method includes: Obtain the temperature parameters of the temperature control device; The fan speed operating parameters and the jet intensity operating parameters of the synthetic jet exciter module are determined based on the temperature parameters. The operation of the fan is controlled according to the wind speed operating parameters, and the operation of the synthetic jet exciter module is controlled according to the jet intensity operating parameters.

[0010] This invention provides a synthetic jet exciter module, assembly, heat dissipation system, temperature control device, and method. The temperature control device includes a housing and a heat dissipation system disposed within the housing. The heat dissipation system includes a condenser, a fan, and the synthetic jet exciter module assembly. The synthetic jet exciter module assembly includes a support frame and synthetic jet exciter modules arranged in an array on the support frame. Each synthetic jet exciter module has a sealed inner cavity. A piezoelectric element drives a vibrating diaphragm to reciprocate, changing the volume of the inner cavity. This causes airflow to be alternately drawn in and ejected through nozzles in a guide structure, forming a vortex-ring jet. The nozzles are positioned facing the condenser fin surface. Multiple modules arranged in an array are integrated on the air inlet side of the condenser via the support frame. Together with the fan on the air outlet side, they form a heat dissipation system integrated into the airflow channel of the temperature control device's housing. During operation, the vortex-ring jet possesses strong penetrating power and can actively interact with the fan. Driven by the main airflow, the condenser directly impacts the fin surface, actively disrupting the nearly static laminar air boundary layer and inducing vortices to enhance the mixing of hot and cold air. This fundamentally overcomes the limitation of boundary layer thermal resistance on condenser heat exchange efficiency. Based on the improved heat dissipation capacity, under the same cooling power conditions, the condenser fin heat exchange area can be reduced, thereby reducing the overall size to meet the needs of miniaturized applications. It can also reduce the fan speed, reducing noise caused by airflow disturbance and mechanical vibration, achieving low-noise operation. While maintaining the same equipment size and fan speed, the upper limit of the equipment's cooling power can be effectively increased to meet the temperature control requirements of higher power density. Ultimately, this achieves a multi-dimensional balance of improved heat dissipation performance, low-noise operation, and miniaturized design, while also possessing the advantages of compact structure for easy integration, strong environmental adaptability, and no ozone or high-pressure safety risks. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 An exploded view of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 2 A cross-sectional view of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the synthetic jet exciter module and condenser according to an embodiment of the present invention is shown; Figure 5 Showing Figure 4 Enlarged view of part A; Figure 6A schematic diagram of the water-retaining surface of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of a drainable flow guiding structure of a synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 8 A schematic diagram of the main flow structure and auxiliary flow guiding structure of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 9 A schematic diagram of the auxiliary flow guiding structure and water suction component of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 10 A schematic diagram of the limiting structure of the water-absorbing component of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 11 A schematic diagram showing the inward extension of the flow guiding structure of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 12 A schematic diagram of the inflation structure of the synthetic jet exciter module according to an embodiment of the present invention is shown; Figure 13 The diagram shows the first and second air guide structures of the synthetic jet exciter module according to an embodiment of the present invention. Figure 14 A schematic diagram of a synthetic jet exciter module according to another embodiment of the present invention is shown; Figure 15 An exploded view of a synthetic jet exciter module according to another embodiment of the present invention is shown; Figure 16 A cross-sectional view of a synthetic jet exciter module according to another embodiment of the present invention is shown; Figure 17 A schematic diagram of the synthetic jet exciter module assembly according to an embodiment of the present invention is shown; Figure 18 A schematic diagram of a synthetic jet exciter module assembly according to another embodiment of the present invention is shown; Figure 19 A schematic diagram of the temperature control device of the present invention with forward airflow is shown; Figure 20 An exploded view of the temperature control device according to an embodiment of the present invention, showing the air outlet pointing forward; Figure 21 A schematic diagram of another embodiment of the temperature control device of the present invention showing upward airflow is shown; Figure 22 An exploded view of a temperature control device with upward airflow according to another embodiment of the present invention is shown; Figure 23 A flowchart illustrating the steps of the control method for the temperature control device according to an embodiment of the present invention is shown. Figure label: 1. Shell; 1a. Upper shell; 1b. Base; 1c. Box body; 101. Inner cavity; 102. Inflatable structure; 103. Heat dissipation structure; 2. Vibrating diaphragm; 3. Piezoelectric sheet; 4. Flow guiding structure; 4a. Main flow guiding structure; 4b. Auxiliary flow guiding structure; 41. Nozzle; 42. Through port; 43. Water-blocking surface; 401. Inclined tube; 402. Long strip block; 5. Water suction component; 51. Limiting structure; 6. Sealing component; 7. First protective cover; 8. First air guiding structure; 9. Second air guiding structure; 10. Third air guiding structure; 11. Second protective cover; 12. Fourth air guiding structure; 13. Five air guiding structures; 14. Elastic buffer pad; 15. Buffer structure; 151. Buffer cavity; 16. Waterproof and breathable membrane; 17. Reinforcing rib; 18. Fixing part; 100. Synthetic jet exciter module; 200. Synthetic jet exciter module assembly; 210. Bracket; 211. Frame; 212a. Transverse rib; 212b. Longitudinal rib; 212c. Support rib; 300. Condenser; 301. Fin; 400. Fan; 500. Outer shell; 501. Air inlet; 502. Air outlet; 503. Baffle; 5031. First air guiding slope; 5032. Second air guiding slope. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0014] The directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrating and understanding this invention, and not for limiting it. Furthermore, in the drawings, structures that are similar or identical are indicated by the same reference numerals.

[0015] As the requirements for power density, compact installation, and quiet operation of equipment in the industrial refrigeration and air conditioning temperature control field continue to increase, efficient heat dissipation within limited space has become the core demand for performance upgrades of temperature control equipment. The traditional forced convection heat dissipation architecture, which relies on fans to drive airflow through condenser fins, is limited by the inherent thermal resistance brought about by the almost static laminar air boundary layer on the fin surface. It has always been difficult to break through the physical bottleneck in improving heat exchange efficiency. If the heat dissipation capacity is supplemented by increasing the heat exchange area of ​​the condenser, it will directly encroach on the internal space of the equipment and violate the goal of miniaturization design. If the convection intensity is enhanced by increasing the fan speed, it will significantly increase the operating noise and energy consumption, which cannot meet the application requirements of low-noise operation. It is difficult to achieve both in the case of limited space, which has become a key technical problem restricting the comprehensive performance upgrade of temperature control equipment.

[0016] To address this, embodiments of the present invention provide a synthetic jet exciter module, assembly, heat dissipation system, temperature control device, and method. By adding a synthetic jet exciter module assembly to the air inlet side of the condenser, a piezoelectric element drives a vibrating diaphragm to generate a vortex ring jet that actively disrupts the air boundary layer on the surface of the condenser fins to overcome thermal resistance limitations. This is further enhanced by the synergistic effect of forced convection from a fan, thereby achieving both heat dissipation performance and low-noise operation under size constraints, and realizing miniaturization, noise reduction, or increased cooling power.

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] Reference Figures 1-16 This invention provides a synthetic jet exciter module 100 for heat dissipation of the fins 301 of a condenser 300. The synthetic jet exciter module 100 includes: a housing 1 with a sealed inner cavity 101 formed inside; a vibrating diaphragm 2 disposed on the housing 1, forming at least a portion of the cavity wall of the inner cavity 101; a piezoelectric sheet 3 attached and fixed to the vibrating diaphragm 2 for driving the vibrating diaphragm 2 to reciprocate and change the volume of the inner cavity 101; and a flow guiding structure 4 disposed on the housing 1, having a through-hole 42 communicating with the inner cavity 101 and a nozzle 41 communicating with the outside. When the volume of the inner cavity 101 changes, airflow is drawn in or ejected through the nozzle 41, forming a vortex jet when ejected. The flow guiding structure 4 is configured such that the ejection direction of the nozzle 41 is directed toward the surface of the fins 301.

[0019] Reference Figures 1-5Specifically, the housing 1 is the external encapsulation structure of the synthetic jet exciter module 100. Its shape can be cylindrical, cuboid, or other shapes. The housing 1 can be a one-piece molded structure or a split assembly structure. The material can be anodized aluminum alloy or injection-molded engineering plastic, etc., which have sufficient structural strength and weather resistance and processing technology. The housing 1 has a sealed inner cavity 101, which provides a closed space for the periodic compression and expansion of airflow. The inner wall of the inner cavity 101 can be pasted with sound insulation cotton to absorb the noise generated by vibration and reduce the operating noise of the module. The vibrating diaphragm 2 is an elastic thin plate structure, which can be made of materials such as metal sheet or composite piezoelectric substrate. The connection with the housing 1 can be in various forms such as bonding, mechanical pressing, snap fixing, and one-piece molding to ensure the sealing of the connection position. Under the drive of the piezoelectric sheet 3, it undergoes reciprocating deformation, thereby changing the volume of the inner cavity 101. The piezoelectric element 3 is a sheet-like driving element that converts electrical energy into mechanical deformation using the inverse piezoelectric effect. Its material can be PZT series piezoelectric ceramics, barium titanate, lead magnesium niobate, lead titanate, or lead indium niobate, etc., to improve electromechanical conversion efficiency and increase jet intensity. The piezoelectric element 3 is attached and fixed to the center of the vibrating diaphragm 2. The surface of the piezoelectric element 3 can be coated with acrylic resin or polyurethane conformal paint to isolate it from water vapor and salt spray corrosion. The flow guiding structure 4 is an airflow channel connecting the inner cavity 101 to the outside. Its inner diameter can be designed as a uniform straight hole, or as a gradually expanding or contracting hole to create better high-speed turbulence. The cross-section of the flow guiding structure 4 can be designed in various shapes such as circular, elliptical, rectangular, or elongated slit. The nozzle 41 can be circular, elliptical, rectangular, or other shapes to expand its influence range and improve the characteristics of the ejected airflow. The edge of the nozzle 41 can be straight, rounded, or pointed, which can improve the characteristics of the ejected airflow in some scenarios. The guide structure 4 can extend along the injection direction, allowing the nozzle 41 to penetrate into the gaps of the condenser 300 fins 301, thus enhancing the boundary layer disturbance effect. Furthermore, a temperature sensor can be fixed to the outer surface of the housing 1 of the synthetic jet exciter module 100 by bonding or welding, depending on the situation, to monitor the module's operating temperature. The blowing and suction times of the synthetic jet exciter module 100 are not necessarily equal; the ratio of blowing to suction times can be adjusted appropriately according to the actual application, for example, shortening the blowing time and increasing the suction time to improve jet intensity and reduce dust accumulation.

[0020] Specifically, when the piezoelectric element 3 undergoes periodic expansion and contraction due to the inverse piezoelectric effect under the action of the AC drive signal, it drives the vibrating diaphragm 2 to reciprocate at high frequency, causing the volume of the inner cavity 101 to change periodically. When the volume increases, the external airflow is drawn into the inner cavity 101 through the nozzle 41, and when the volume decreases, the internal gas is compressed and ejected at high speed through the nozzle 41, forming a periodic pulsed vortex ring jet. The vortex ring jet impacts the surface of the condenser 300 fins 301 at a high speed. The rotating airflow of the vortex ring directly scrapes the wall surface, carrying away the originally static boundary layer fluid. At the same time, it induces a high-dynamic quantum airflow towards the wall surface, pumping the mainstream cold air to the wall surface and triggering the outward diffusion of local turbulent spots, transforming the laminar boundary layer into a vigorous turbulent boundary layer, thus breaking through the limitation of boundary layer thermal resistance from the root. The flow guiding structure 4 directs the jet direction of the nozzle 41 towards the surface of the fins 301, ensuring that the vortex ring jet can accurately act on the boundary layer region. With the above structure, there is no need to configure additional power components such as pumps and fans. High-speed jets can be formed solely by piezoelectric vibration. The module is compact and energy-efficient, has no mechanical friction parts and a long service life, and is safe and reliable with zero ozone emissions during operation. It can effectively improve heat exchange efficiency without increasing the condenser volume by 300 and the fan speed by 400, while taking into account the requirements of miniaturization and low noise.

[0021] In one embodiment, the housing 1 includes an upper housing 1a and a base 1b, the upper housing 1a and the base 1b are detachably connected, a flow guiding structure 4 is provided on the upper housing 1a, and an inner cavity 101 is defined between the interior of the upper housing 1a and the interior of the base 1b. An opening is formed on the side of the base 1b away from the upper housing 1a, and a vibrating diaphragm 2 closes the opening to form the cavity wall of the inner cavity 101. A piezoelectric sheet 3 is attached and fixed to the side of the vibrating diaphragm 2 facing away from the inner cavity 101.

[0022] Reference Figure 1 and Figure 2Specifically, the upper shell 1a and the base 1b are two components of the shell 1, both of which can be made of aluminum alloy or engineering plastic. The upper shell 1a has an internal upper cavity, and the base 1b has an internal lower cavity. When the two are fastened together, they together enclose a sealed inner cavity 101. The main body of the upper shell 1a and the main body of the base 1b can be made of all-aluminum alloy with anodized surface treatment, or they can be made of ABS injection molding. The connection between the upper shell 1a and the base 1b can be a long-term fixing method such as welding, bonding, or merging the two into one piece, or a detachable method such as threaded connection, bolt locking, snap-fit, or slot fixing, which facilitates regular internal cleaning and maintenance in dusty areas. The base 1b has a circular or rectangular opening on the side away from the upper shell 1a. The vibrating diaphragm 2 completely covers and closes the opening, and the edge is sealed and fixed to the base 1b. The fixing method can be bonding, welding, mechanical pressing, snap-fit ​​fixing, etc. The piezoelectric element 3 is attached to the center of the outer surface of the vibrating diaphragm 2 facing away from the inner cavity 101, and is concentrically positioned with the vibrating diaphragm 2 to ensure uniform transmission of vibration force. The piezoelectric element 3 and the vibrating diaphragm 2 are fixed together by adhesive or welding. The surface of the piezoelectric ceramic is coated with a conformal coating, such as acrylic resin or polyurethane, to prevent moisture and salt spray corrosion, forming a basic protective layer. The bolts or slot structure for fixing to the bracket 210 can be designed on the upper housing 1a or the base 1b.

[0023] Specifically, the split structure separates the jet guide and the vibration drive into two independent components, which are opened and closed through a detachable connection structure. This allows maintenance personnel to remove the upper housing 1a from the base 1b after long-term outdoor use, when dust accumulates in the nozzle 41 or foreign objects enter the interior, to thoroughly clean the inner cavity 101 and the nozzle 41, restoring the synthetic jet exciter module 100 to normal working condition. This solves the problem of the one-piece molded structure being unable to be disassembled for maintenance. The detachable split housing 1 structure significantly improves the maintainability of the module while ensuring the sealing performance of the inner cavity 101, adapting to complex outdoor conditions such as dust and high humidity, and reducing the maintenance costs for long-term outdoor use.

[0024] In one embodiment, the flow guiding structure 4 is a hollow tube, which is disposed on the top surface of the upper housing 1a. One end of the tube is the through port 42 that penetrates the top surface of the upper housing 1a to connect to the inner cavity 101, and the other end of the tube is the nozzle 41 to connect to the outside. The tube is arranged vertically or inclined relative to the top surface of the upper housing 1a.

[0025] Optionally, the flow guiding structure 4 is a hollow straight tube, which is located on the top surface of the upper shell 1a. One end of the straight tube is a through-hole 42 that penetrates the top surface of the upper shell 1a to connect to the inner cavity 101, and the other end of the straight tube is a nozzle 41 to connect to the outside. The straight tube is set perpendicular to the top surface of the upper shell 1a, so that the spray direction of the nozzle 41 of the straight tube can be parallel to the surface of the fin 301. This can remove the boundary layer on the surfaces of two adjacent fins 301 at the same time, and can maximize the removal of the boundary layer on the surfaces of the two fins 301 on both sides of the gap, thereby improving the boundary layer removal efficiency.

[0026] Optionally, the flow guiding structure 4 is a hollow inclined tube 401, which is located on the top surface of the upper shell 1a. One end of the inclined tube 401 is a through-hole 42 to connect to the inner cavity 101, and the other end of the inclined tube 401 is a nozzle 41 to connect to the outside. The inclined tube 401 is inclined relative to the top surface of the upper shell 1a so that the nozzle 41 is obliquely facing the surface of the fin 301.

[0027] Reference Figure 2 and Figure 3 Specifically, the inclined tube 401 is a hollow tubular structure with a cross-section that can be designed in various shapes such as circular, elliptical, and rectangular. It is integrally formed with the upper shell 1a to ensure structural strength and sealing. The lower opening of the inclined tube 401 is a through port 42, which directly connects to the inner cavity 101, while the upper opening is a nozzle 41, which connects to the external environment. The axis of the inclined tube 401 is inclined at a preset angle to the top plane of the upper shell 1a, with the inclination direction facing the side where the condenser 300 fins 301 are located, so that the spray direction of the nozzle 41 is obliquely aligned with the surface of the fins 301. The inner wall of the inclined tube 401 can be designed as a straight hole of equal diameter, or as a gradually narrowing or expanding hole, to adapt to different jet velocities and vortex ring morphology requirements. It should be noted that the spray direction of the nozzle 41 can be adjusted not only by the inclined tube 401, but also by adjusting the structure of the base 1b to tilt the upper shell 1a, thereby adjusting the spray direction of the nozzle 41. Both methods can achieve the purpose of the nozzle 41 facing the surface of the fins 301.

[0028] Reference Figure 4 and Figure 5Specifically, the inclined guide structure 4 causes the jet to impact the surface of the fins 301 at a certain angle. Compared with vertical jetting, this allows for a larger coverage area of ​​the heat exchange area of ​​the fins 301. Simultaneously, it guides the airflow along the gaps between the fins 301, extending the interaction time between the airflow and the fins 301, thus enhancing the boundary layer disturbance effect. The jet can be directed towards the fin surface without adjusting the overall module installation angle, simplifying the assembly layout design. The inclined tube 401 makes the nozzle 41 obliquely face the surface of the fins 301, increasing the coverage area of ​​the jet on the fin surface, improving the boundary layer disruption effect and heat dissipation efficiency, while also enhancing the uniformity and coverage of the heat exchange enhancement.

[0029] In one embodiment, the extension height of the inclined surface on one side of the inclined tube 401 near the nozzle 41 is higher than the extension height of the opposite inclined surface, so that the inclined surface with the higher extension height serves as the water-blocking surface 43 of the nozzle 41.

[0030] Reference Figure 6 Specifically, at the end of the inclined tube 401 near the nozzle 41, the side of the tube wall facing upwards from the inclined tube 401 extends to a higher height, while the side facing downwards from the inclined tube 401 extends to a lower height. The height difference between the two sides of the tube wall forms a water-blocking structure with one side raised. The higher inclined surface extends upwards along the axis of the inclined tube 401, covering the area directly above the nozzle 41, which can prevent vertically dripping rainwater from falling directly into the nozzle 41. The inner wall of the inclined tube 401 maintains a smooth transition, and the increase in the height of the tube wall on one side will not affect the intake and exhaust of the airflow, ensuring the stability of the jet shape. When the synthetic jet exciter is applied to a temperature control device with upward airflow, the nozzle 41 avoids facing directly upwards. At the same time, the upper surface of the guide structure 4 extends to a certain extent and is higher than the lower surface, forming a water-blocking structure. The airflow ejected during the operation of the synthetic jet exciter module 100 can also reduce the probability of rainwater entering the cavity.

[0031] Specifically, in upward-discharge applications, rainwater may drip into the nozzle 41 from above. The raised water-blocking surface 43 on one side physically blocks the dripping liquid water without altering the nozzle 41's spray direction or jet performance. This reduces the probability of rainwater entering the inner cavity 101 via the guide structure 4, thus solving the problem of water ingress into the nozzle 41 under top-discharge conditions. The water-blocking surface 43 effectively prevents rainwater from entering the inner cavity 101 from the nozzle 41, improving the module's waterproof performance without requiring additional waterproof components. Its simple structure does not increase wind resistance, ensuring long-term reliable operation of the synthetic jet exciter module 100 in upward-discharge scenarios.

[0032] In one embodiment, the through-hole 42 is located at the lowest point of the inner cavity 101, and the flow guiding structure 4 gradually decreases from the through-hole 42 to the nozzle 41.

[0033] Reference Figure 7 Specifically, the bottom of the inner cavity 101 has a low-lying recessed area, and the through-hole 42 is located at the lowest point of the inner cavity 101, that is, at the edge of the upper shell 1a. The flow guiding structure 4 gradually slopes downward from the through-hole 42 towards the nozzle 41, with an overall trend of gradually decreasing from the inside to the outside. The position of the nozzle 41 is lower than that of the through-hole 42, allowing the water inside the inner cavity 101 to flow out naturally from the nozzle 41 by gravity along the flow guiding structure 4. The inner wall of the flow guiding structure 4 is smooth and without protrusions, avoiding water residue and ensuring smooth drainage. When a small amount of water enters the inner cavity 101, the water flows naturally to the through-hole 42 located at the lowest point under the action of gravity, and is discharged from the nozzle 41 along the gradually decreasing flow guiding structure 4.

[0034] Specifically, the through-hole 42 is located at the lowest point of the inner cavity 101, and the flow guiding structure 4 gradually decreases from the through-hole 42 to the nozzle 41. Gravity allows water in the inner cavity 101 to automatically drain from the nozzle 41 along the flow guiding structure 4, preventing water from accumulating at the bottom of the inner cavity 101 and affecting the movement of the vibrating diaphragm 2. Automatic drainage is achieved without additional power or mechanisms. By placing the through-hole 42 at the lowest point and designing the flow guiding structure 4 to gradually decrease, passive and automatic drainage of water in the inner cavity 101 is achieved. The structure is simple and reliable, reducing the risk of moisture damage to the internal components of the synthetic jet exciter module 100 and effectively improving the module's adaptability to humid conditions.

[0035] In one embodiment, there are multiple flow guiding structures 4, at least one of which is a main flow guiding structure 4a and at least one of which is an auxiliary flow guiding structure 4b. The nozzle 41 of the main flow guiding structure 4a sprays towards the surface of the fin 301. The through-hole 42 of the auxiliary flow guiding structure 4b is located at the lowest point of the inner cavity 101 and gradually decreases from the through-hole 42 to the corresponding nozzle 41.

[0036] Reference Figure 8 Specifically, the housing 1 is provided with at least one main flow structure 4a and at least one auxiliary flow guide structure 4b. The diameter of the main flow structure 4a is larger than that of the auxiliary flow guide structure 4b, ensuring that most of the airflow is ejected from the main flow structure 4a to meet the heat dissipation requirements. The main flow structure 4a is used to generate a vortex ring jet toward the surface of the fins 301 to enhance heat dissipation. Its nozzle 41 faces the surface of the fins 301 of the condenser 300, serving as the main output channel for jet heat dissipation. The auxiliary flow guide structure 4b is used for drainage. Its through-hole 42 is located at the lowest point of the inner cavity 101, and the auxiliary flow guide structure 4b gradually decreases from the through-hole 42 to its corresponding nozzle 41, ensuring that accumulated water is discharged along the auxiliary flow guide structure 4b under the action of gravity. The auxiliary flow guide structure 4b can be located on the side of the bottom of the inner cavity 101 without affecting the jet output of the main flow structure 4a.

[0037] Specifically, there is a design contradiction in simultaneously achieving heat dissipation and drainage functions on a single flow guiding structure 4. This is addressed by setting a main flow guiding structure 4a and an auxiliary flow guiding structure 4b to handle heat dissipation and drainage respectively. The nozzle 41 of the main flow guiding structure 4a faces the surface of the fins 301 to ensure effective jet heat dissipation, while the through-hole 42 of the auxiliary flow guiding structure 4b is located at the lowest point of the inner cavity 101 and gradually decreases in elevation to ensure smooth drainage of accumulated water. Each structure performs its specific function, achieving automatic drainage without the need for additional drainage valves. This division of labor between the main flow guiding structure 4a and the auxiliary flow guiding structure 4b effectively balances the heat dissipation of the condenser 300 and the drainage of the cavity, resulting in a compact structure that does not occupy additional space and improves the module's environmental adaptability.

[0038] In this embodiment, the synthetic jet exciter module 100 further includes a water-absorbing element 5, which is inserted into the auxiliary flow guiding structure 4b. One end of the water-absorbing element 5 near the inner cavity 101 contacts the lowest point of the inner cavity 101, and the other end of the water-absorbing element 5 away from the inner cavity 101 extends out of the nozzle 41 of the auxiliary flow guiding structure 4b.

[0039] Reference Figure 9 Specifically, the absorbent component 5 is a long, flexible material component with capillary water absorption function. It can automatically absorb accumulated water through capillary action and form a continuous water flow that seeps out along the absorbent component 5. The absorbent component 5 can be made of various hydrophilic materials such as hydrophilic fibers, porous ceramics, and absorbent cotton, such as cotton rope or polyester water-conducting core, which have good capillary water-conducting ability and weather resistance, and can adapt to outdoor temperature and humidity changes. The inner end of the absorbent component 5 extends into the inner cavity 101 and is in close contact with the bottom surface of the lowest point of the inner cavity 101. The outer end of the absorbent component 5 extends beyond the nozzle 41 of the auxiliary flow guiding structure 4b and hangs down for a certain length. When there is no water in the inner cavity 101, the water-absorbing element 5 is in a dry state and its pore resistance is relatively large. When the volume of the inner cavity 101 changes, almost all the gas is ejected from the nozzle 41 of the main flow structure 4a, which does not affect the normal jet function. When water enters the inner cavity 101, the water-absorbing element 5 automatically absorbs the water through capillary action and guides the water to the nozzle 41 of the auxiliary flow structure 4b for discharge. At the same time, the water-wetted water-absorbing element 5 further blocks the gas channel of the auxiliary flow structure 4b, inhibiting gas leakage from the auxiliary flow structure 4b. Drainage continues until there is no water in the inner cavity 101, after which the water-absorbing element 5 gradually dries and restores its gas barrier ability.

[0040] Specifically, the surface tension of the liquid makes it difficult for accumulated water to drain naturally from the auxiliary flow guiding structure 4b. The water-absorbing element 5 breaks the surface tension of the water film through capillary action, allowing the accumulated water to continuously seep out and drip down along the water-absorbing element 5. This solves the drainage problem caused by the surface tension of the liquid and achieves passive automatic drainage without the need for additional control. The automatic drainage of accumulated water in the inner cavity 101 is achieved through the capillary action of the water-absorbing element 5, while the normal jet function of the main flow guiding structure 4a is not affected in the dry state, and the drainage process is stable and reliable.

[0041] In this embodiment, the end of the absorbent 5 near the inner cavity 101 is provided with a limiting structure 51, and the diameter of the limiting structure 51 is larger than the diameter of the through opening 42.

[0042] Reference Figure 10 Specifically, the limiting structure 51 is an enlarged diameter structure located at one end of the absorbent 5 near the inner cavity 101. Its radial dimension is larger than the radial dimension of the through-hole 42 of the auxiliary guide structure 4b, preventing the limiting structure 51 from passing through the through-hole 42. The limiting structure 51 can be an enlarged end integrally formed with the absorbent 5, a limiting block attached to the end of the absorbent 5, or a limiting piece bonded and fixed. It can also be achieved by fastening to the absorbent 5, as long as the radial dimension is larger than the through-hole 42, the limiting function can be achieved. The limiting structure 51 is engaged at the edge of the through-hole 42 inside the inner cavity 101 to prevent the absorbent 5 from slipping off the nozzle 41 of the auxiliary guide structure 4b under airflow vibration or external force.

[0043] Specifically, during long-term use, the suction component 5 may detach from the auxiliary guide structure 4b due to vibration or airflow impact, causing the drainage function to fail. The limiting structure 51, blocked by the edge of the through-hole 42, restricts the axial displacement of the suction component 5, ensuring that the suction component 5 remains in the correct position within the auxiliary guide structure 4b. By preventing the suction component 5 from detaching through the limiting structure 51, the long-term reliability of the drainage function is guaranteed, eliminating the need for frequent inspections and reinstallation, and reducing the frequency of module maintenance.

[0044] In this embodiment, the absorbent 5 is a hydrophilic fiber bundle, and the outer periphery of the fiber bundle is in close contact with the inner wall of the auxiliary flow guiding structure 4b.

[0045] Specifically, the hydrophilic fiber bundle is a multi-strand twisted bundle-like fiber structure that utilizes capillary action to adsorb and conduct water. Its material can be various hydrophilic materials such as cotton, polyester, and glass fiber, possessing stable capillary water absorption performance and weather resistance, and is not prone to rotting or deterioration with long-term use. The overall outer diameter of the fiber bundle matches the inner diameter of the auxiliary flow guiding structure 4b, and the outer peripheral surface of the fiber bundle is tightly fitted to the inner wall of the auxiliary flow guiding structure 4b, reducing the gap between the fiber and the inner wall. To ensure close contact between the fiber bundle and the inner wall of the auxiliary flow guiding structure 4b, the inner diameter of the auxiliary flow guiding structure 4b near the nozzle 41 can be appropriately reduced, and the number of fiber bundles can be increased to fully fill the interior of the auxiliary flow guiding structure 4b.

[0046] Specifically, the close contact between the outer periphery of the fiber bundle and the inner wall of the auxiliary flow guiding structure 4b ensures that there are no gaps between the fiber bundle and the inner wall, guaranteeing that accumulated water is discharged directionally along the fiber bundle without leakage between the fiber bundle and the inner wall. Simultaneously, the close-fitting fiber bundle provides significant resistance to gas flow in a dry state, effectively suppressing gas leakage from the auxiliary flow guiding structure 4b, improving the air seal effect, and ensuring that jet energy is concentrated and output from the main flow guiding structure 4a. By tightly adhering the hydrophilic fiber bundle to the inner wall of the auxiliary flow guiding structure 4b, good air resistance and water conductivity are achieved, ensuring drainage efficiency while preventing gas leakage from affecting jet performance. The structure is simple, low-cost, and suitable for long-term outdoor operation.

[0047] In this embodiment, a flexible sealant is provided between the inner peripheral wall of the nozzle 41 and / or the through-hole 42 and the outer peripheral wall of the fiber bundle.

[0048] Specifically, the flexible sealant is an elastic sealing material, such as silicone rubber or polyurethane adhesive, applied in dots at the nozzle 41 and / or through-hole 42 of the auxiliary flow guiding structure 4b, or simultaneously at both locations, leaving only the capillary water-guiding channel in the center of the fiber bundle for water flow. After curing, the flexible sealant has a certain degree of elasticity, capable of undergoing slight deformation with vibration, and will not crack or fall off.

[0049] Specifically, the fiber bundle may loosen after prolonged use, leading to gaps between the fiber bundle and the inner wall of the auxiliary flow guiding structure 4b, affecting the sealing effect. The flexible sealant can accommodate the slight displacement of the fiber bundle, maintaining the seal between the fiber bundle and the inner wall, completely blocking airflow leakage channels between the fiber bundle and the inner wall, further reducing jet energy loss, ensuring the jet intensity of the main flow guiding structure 4a, and not hindering the capillary water-conducting function of the fiber bundle. The flexible sealant enhances the sealing between the fiber bundle and the auxiliary flow guiding structure 4b, avoiding gas leakage problems caused by fiber loosening after long-term use, reducing jet energy waste, and ensuring stable heat dissipation performance.

[0050] In one embodiment, the end of the flow guiding structure 4 away from the nozzle 41 extends toward the inner cavity 101 to the lowest point of the inner cavity 101.

[0051] Reference Figure 11Specifically, the end of the flow guiding structure 4 furthest from the nozzle 41 extends from the surface of the housing 1 toward the interior of the inner cavity 101, reaching the lowest point of the inner cavity 101. The opening at the end of the extension is the through-hole 42, which is set close to the bottom surface of the inner cavity 101. The extension section of the flow guiding structure 4 can be integrally formed with the housing 1 or it can be a separately inserted extension tube. The outer wall of the extension section is sealed and fixed to the side wall of the inner cavity 101 to ensure airtightness. The nozzle 41 is located on the outside of the housing 1 and communicates with the internal channel of the extension section. The airflow enters and exits the inner cavity 101 through the extension section. When there is no water accumulation in the inner cavity 101, the flow guiding structure 4 normally guides the airflow to be ejected from the nozzle 41 to form a vortex ring jet; when there is water accumulation in the inner cavity 101, the pressure of the vibrating diaphragm 2 compressing the inner cavity 101 forces the water out of the flow guiding structure 4 and discharged through the nozzle 41.

[0052] Specifically, by extending the water inlet of the flow guide structure 4 directly to the bottom of the inner cavity 101, the water accumulated at the bottom of the inner cavity 101 can be completely drained, avoiding the problem of residual water at the bottom that cannot be drained. When the compressed jet is applied, the airflow directly pushes the accumulated water outward along the flow guide channel, achieving efficient drainage. By extending the flow guide structure 4 to the lowest point of the inner cavity 101, the pressure fluctuation during the operation of the jet can drain the accumulated water without the need for additional drainage mechanisms or water-absorbing materials. The structure is simple, easy to manufacture, and requires no additional maintenance, effectively improving the waterproof durability of the module.

[0053] In one embodiment, the synthetic jet exciter module 100 further includes a seal 6, and an inflation structure 102 is provided on the side wall of the upper housing 1a and / or the base 1b. The inflation structure 102 communicates the inner cavity 101 with the outside. The seal 6 is detachably connected to the end of the inflation structure 102 near the outside.

[0054] Reference Figure 12Specifically, the inflation structure 102 is a tubular connector protruding from the side wall of the housing 1, with an internal vent hole connecting the inner cavity 101 to the outside. The outer periphery of the inflation structure 102 is provided with an external thread or snap-fit ​​structure to adapt to the connector of an external air source. The inflation structure 102 can be set on the side wall of the upper housing 1a, the side wall of the base 1b, or both. The sealing element 6 is a sealing cap or sealing plug, designed with a thread or snap-fit ​​structure that matches the inflation structure 102, and a sealing ring is designed at the contact position with the end face of the inflation structure 102 to ensure a seal. Normally, the sealing cap is locked and sealed on the inflation structure 102 to ensure the airtightness of the inner cavity 101; when cleaning is required, the sealing cap is removed, and the air outlet of the external inflation device is sealed and fixed on the inflation structure 102. By inflating the inner cavity 101, the dust accumulated at the nozzle 41 can be quickly cleaned. Furthermore, a conduit can be designed between the inflatable structure 102 and the sealing cap. One end of the conduit is sealed and fixed to the inflatable structure 102, and the other end is led to a location in the system that facilitates rapid operation and maintenance and fixed thereafter, and then connected and fixed to the sealing cap. This allows for quick cleaning of dust accumulated in the nozzle 41 without removing the synthetic jet exciter module 100 from the equipment. Furthermore, designing the opening of the inflatable structure 102 at the lowest point of the housing 1 also allows for manual drainage when water accumulates in the cavity.

[0055] Specifically, when the nozzle 41 is clogged with dust, affecting the jetting effect, high-pressure gas is injected into the inner cavity 101 through the inflation structure 102. The high-pressure gas rushes out from the nozzle 41, blowing off the dust adhering to the edge of the nozzle 41, completing the cleaning without disassembling the housing 1. Through the design of the inflation structure 102 and the sealing element 6, the dust accumulation in the nozzle 41 can be quickly cleaned without disassembling the housing 1, making operation and maintenance convenient and efficient, and reducing maintenance difficulty and costs.

[0056] In one embodiment, the outer peripheral wall of the upper housing 1a and / or the base 1b is provided with a plurality of heat dissipation structures 103, which are distributed at intervals along the circumference of the housing 1, and each heat dissipation structure 103 extends along the airflow direction.

[0057] Reference Figure 13Specifically, the heat dissipation structure 103 is a rib-like structure protruding from the outer peripheral wall of the housing 1. Its shape can be a sheet-like structure or other protruding structures, used to increase the heat dissipation area of ​​the outer surface of the housing 1 and accelerate the dissipation of internal heat. Multiple heat dissipation structures 103 are evenly spaced along the circumference of the housing 1, and each heat dissipation structure 103 extends along the airflow direction. The length direction of the ribs is parallel to the mainstream airflow direction, reducing obstruction to the airflow. The heat dissipation structure 103 can be integrally formed with the housing 1, and the material is the same as that of the housing 1. When the upper housing 1a and the base 1b are designed with a threaded connection, the heat dissipation structure 103 can be designed as a special structure to match a specially made electric screwdriver bit, forming a bit fixing groove for easy and quick disassembly and assembly during maintenance, and also serving as an auxiliary function for disassembly and assembly.

[0058] Specifically, during operation, the piezoelectric element 3 and the vibrating diaphragm 2 of the synthetic jet exciter module 100 generate heat. Accumulated heat can cause the temperature of the housing 1 to rise, affecting the performance and long-term stable operation of the piezoelectric element 3. The heat dissipation structure 103 increases the heat dissipation area on the outer surface of the housing 1, accelerating heat dissipation into the surrounding airflow. Simultaneously, the heat dissipation structure 103 extends along the airflow direction, avoiding obstruction and not significantly increasing wind resistance. By increasing the heat dissipation area and extending along the airflow direction through the heat dissipation structure 103, the temperature of the housing 1 during operation of the synthetic jet exciter module 100 is reduced, ensuring long-term stable operation without affecting airflow, thus adapting to the installation environment within the air duct.

[0059] In one embodiment, the synthetic jet exciter module 100 further includes a first protective cover 7, which covers the outer periphery of the piezoelectric sheet 3.

[0060] Continue to refer to Figure 13 Specifically, the first protective cover 7 is a protective shell covering the piezoelectric sheet 3, completely enclosing and protecting it. Its material can be an elastic soft film such as silicone rubber or polytetrafluoroethylene, or a rigid protective shell made of metal or plastic. The edges of the first protective cover 7 are fixed and sealed with adhesive or bolts and gaskets. The protective cover is a sealed structure, capable of preventing external moisture, dust, salt spray, etc., from contacting the electrodes and surface of the piezoelectric sheet 3, while not interfering with the normal vibration of the diaphragm 2.

[0061] Specifically, the piezoelectric element 3, when exposed to the external environment, is susceptible to corrosion from moisture, salt spray, and dust. The first protective cover 7 isolates the piezoelectric element 3 from the external environment, providing additional physical protection for the piezoelectric drive component and protecting the piezoelectric element 3 from environmental damage. By protecting the piezoelectric element 3 with the first protective cover 7, the protection level of the piezoelectric component is significantly improved without affecting the vibration of the diaphragm 2, thereby enhancing the long-term reliability of the synthetic jet exciter module 100 in harsh outdoor environments and making it suitable for harsh outdoor working conditions.

[0062] In one embodiment, a first air guide structure 8 is provided on the side of the base 1b away from the upper housing 1a, and the outer peripheral surface of the first air guide structure 8 gradually narrows from the base 1b toward the side away from the upper housing 1a.

[0063] Continue to refer to Figure 13 Specifically, the first air guide structure 8 is an air guide structure located on the windward side of the base 1b. Its outer circumference gradually narrows from the base 1b toward the side away from the upper shell 1a, and the whole is a streamlined or acute cone structure with a rounded transition. The first air guide structure 8 and the base 1b can be integrally formed, with a smooth surface without protrusions, guiding the airflow to flow smoothly along the side wall and reducing the generation of turbulence.

[0064] Specifically, the windward side of base 1b faces the direction of the incoming airflow. If the windward side were flat, it would significantly obstruct the airflow, increasing flow resistance and affecting the air intake of condenser 300. The outer periphery of the first air guide structure 8 gradually narrows, guiding the incoming main airflow and reducing turbulence and wind resistance caused by the airflow directly impacting the module. This allows the airflow to flow smoothly around the outer periphery of the air guide structure, reducing airflow separation and wake areas. By reducing the obstruction of the windward side of base 1b to the airflow through the first air guide structure 8, the impact on overall flow resistance is reduced, and the smoothness of the entire unit's airflow duct is improved.

[0065] In one embodiment, a second air guide structure 9 is provided on the side of the upper shell 1a away from the base 1b. The second air guide structure 9 is sleeved on the outer periphery of the air guide structure 4, and the outer periphery of the second air guide structure 9 gradually narrows from the upper shell 1a toward the side away from the base 1b.

[0066] Continue to refer to Figure 13 Specifically, the second air guide structure 9 is a streamlined curved surface structure located on the leeward side of the upper shell 1a, fitted around the outer periphery of the air guide structure 4, with a through hole in the middle to avoid the air guide structure 4. It is integrally formed or fixedly connected to the upper shell 1a, with a smooth transition surface and no abrupt edges. The outer periphery of the second air guide structure 9 gradually narrows from the upper shell 1a toward the side away from the base 1b, forming a smooth streamlined curved surface overall.

[0067] Specifically, on the leeward side of the upper casing 1a, which is close to the condenser 300, if there is a large planar area on the leeward side, the airflow will generate a wake separation zone behind the upper casing 1a, causing the mainstream airflow to be unable to effectively reach the corresponding area of ​​the condenser 300 fins 301, resulting in a heat dissipation blind zone behind the module. The streamlined curved surface of the second air guide structure 9 allows the airflow to smoothly transition to the condenser 300 side along its outer circumference, shortening the wake recovery distance, reducing the area of ​​the mainstream airflow vacuum zone, and improving the uniformity of the main airflow velocity on the surface of the fins 301. By reducing the wake area on the leeward side of the upper casing 1a through the second air guide structure 9, more mainstream airflow can be effectively blown onto the surface of the condenser 300 fins 301, optimizing the flow field distribution around the module and ensuring the uniformity of the overall heat exchange efficiency of the condenser 300.

[0068] In one embodiment, the housing 1 is a box 1c, and the interior of the box 1c forms an inner cavity 101. The box 1c has opposing upper and lower surfaces, and an opening is formed on the upper surface. The vibrating diaphragm 2 closes the opening to form the cavity wall of the inner cavity 101. The piezoelectric sheet 3 is attached and fixed to the side of the vibrating diaphragm 2 facing away from the inner cavity 101. The box 1c has opposing front and rear sides, and the front side is connected to the flow guiding structure 4. The front and rear sides extend along the width of the box 1c to form a narrow and elongated surface.

[0069] Reference Figures 14-16 Specifically, the housing 1 is a flat rectangular box 1c structure, with a sealed inner cavity 101 inside the box 1c. A rectangular or circular opening is provided on the upper surface of the box 1c, and the vibrating diaphragm 2 closes this opening to form the upper cavity wall of the inner cavity 101. The piezoelectric sheet 3 is attached to the center of the upper surface of the vibrating diaphragm 2 facing away from the inner cavity 101, that is, the piezoelectric sheet 3 is arranged from the upper surface of the box 1c rather than the bottom surface. Of course, it is understood that in other embodiments, a heat sink structure can be provided on the upper surface, and then the vibrating diaphragm and the piezoelectric sheet can be arranged in the middle of the lower surface, and then buffer foam can be arranged on both sides or around the lower surface. The front and rear sides of the box 1c are narrow and elongated surfaces extending along the width direction of the box 1c, with a small windward projection area. The front side is used to connect the airflow guiding structure 4, and the rear side faces the air intake direction. The material of the box 1c can be aluminum alloy or engineering plastic, and it can be assembled by welding / adhesion or integral molding to ensure airtightness. During installation, based on the actual dimensions of each side of the box 1c, the narrower side is selected as the windward side, and the nozzle 41 is designed on the leeward side opposite the windward side. For example, when the box 1c is a cuboid with different length, width and height, the piezoelectric sheet 3 is arranged on the side with the largest area, while the nozzle 41 is designed on the narrow side and directly facing the heat dissipation fins 301 of the condenser 300. This can significantly reduce the windward area, reduce the impact on the main airflow generated by the fan 400, and also increase the number of synthetic jet exciter modules 100 that can be arranged.

[0070] Specifically, the traditional cylindrical synthetic jet exciter module 100 has a large windward surface, which significantly obstructs the mainstream airflow generated by the fan 400, resulting in a reduction in the airflow to the corresponding area of ​​the condenser 300. By using the narrow side of the housing 1c as the windward surface, and making the front and rear sides elongated, the windward surface area is significantly reduced. This allows the airflow to bypass the housing 1c more smoothly and reach the fin 301 surface of the condenser 300, significantly reducing the obstruction of the module to the main airflow and reducing wind resistance loss. At the same time, more modules can be arranged within the limited space of the support 210, increasing the jet coverage density. The narrow-face design of the housing 1c significantly reduces the windward surface area, reduces obstruction to the mainstream airflow, and provides space for arranging more synthetic jet exciter modules 100, adapting to compact air duct conditions.

[0071] In one embodiment, the flow guiding structure 4 is an elongated block 402. One side of the elongated block 402 is a through-hole 42 that penetrates the front side to connect to the inner cavity 101, and the other side of the elongated block 402 is a nozzle 41 that connects to the outside. The flow guiding structure 4 extends along the width direction of the front side so that both the through-hole 42 and the nozzle 41 are elongated slits.

[0072] Reference Figure 16 Specifically, the flow guiding structure 4 is a long strip-shaped block 402 extending along the width direction of the front side of the box 1c, and is fixedly installed on the front side of the box 1c. One side of the long strip-shaped block 402 is a through-hole 42, which penetrates the front side and connects to the inner cavity 101. The other side of the long strip-shaped block 402 is a nozzle 41, which connects to the outside. Since the long strip-shaped block 402 extends along the width direction of the front side, both the through-hole 42 and the nozzle 41 extend along the width direction of the box 1c in the form of long slits, with the length matching the width of the box 1c. The length of a single nozzle 41 can cover the gaps between multiple rows of adjacent condenser fins 301. The interior of the long strip-shaped block 402 forms an airflow channel connecting the through-hole 42 and the nozzle 41. The inner wall of the slit is smoothly transitioned to optimize the jet shape and ensure that the vortex ring outputs uniformly along the length direction of the slit. When the fins 301 of the condenser 300 extend longitudinally and multiple fins 301 are arranged at intervals in the left and right directions, the elongated slit-shaped nozzle 41 extends along the arrangement direction of the fins 301. The elongated vortex ring jet ejected from one nozzle 41 can simultaneously cover the flow channel between multiple fins 301. After the elongated vortex ring airflow is ejected, it is directly cut into multiple small vortex rings by multiple fins 301 and enters the gap between each fin 301. Each small vortex ring simultaneously removes the surface boundary layer of two adjacent fins 301, realizing the simultaneous removal of the surface boundary layer of the fins 301 on both sides.

[0073] Specifically, the circular nozzle 41 emits a point-like jet, which can only cover a single fin gap 301. Multiple nozzles 41 are needed to cover the entire condenser 300 area. The flow-guiding structure 4 of the elongated block 402 makes both the through-hole 42 and the nozzle 41 elongated slits, enabling the emission of continuous linear vortex ring jets. One nozzle 41 can cover multiple fin gaps 301, and the ratio of the nozzle 41's affected area to the module's blocked mainstream airflow area is larger, resulting in higher cost-effectiveness. By using the elongated slit-shaped nozzle 41, a single nozzle 41 can cover multiple fin gaps 301, reducing the number of nozzles 41 required, improving jet coverage efficiency, reducing the module usage and cost of the assembly, and simultaneously reducing the module's total windward area, further reducing duct resistance.

[0074] In one embodiment, a third air guide structure 10 is provided on the rear side, and the third air guide structure 10 is inclined from the lower surface of the box 1c to the upper surface of the box 1c.

[0075] Reference Figure 14 and Figure 15 Specifically, the third air guiding structure 10 is an inclined air guiding surface located on the rear side of the box 1c, extending obliquely from the lower surface of the box 1c to the upper surface of the box 1c, forming a smooth inclined structure. The edge of the inclined surface smoothly transitions with the side wall of the box 1c, without sharp edges or protrusions. The third air guiding structure 10 is located on the windward side of the box 1c. When the airflow blows from the direction of the air inlet 501, the airflow flows upward along the inclined surface of the third air guiding structure 10, smoothly bypassing the box 1c, guiding the airflow flowing along the height direction of the box 1c to smoothly change direction, reducing the turbulence caused by airflow impact.

[0076] Specifically, the rear side of the housing 1c faces the air inlet 501. If the rear side is a vertical plane, the airflow will separate above the housing 1c. The third air guide structure 10 slopes upwards to guide the airflow towards the rear of the housing 1c, directing the airflow smoothly upwards along the sloped surface and around the housing 1c. This reduces airflow separation and wake above the housing 1c, lowering wind resistance. Simultaneously, it guides the airflow towards the fins 301, increasing the airflow velocity on the surface of the fins 301. By guiding the airflow smoothly around the housing 1c through the third air guide structure 10, the obstruction and wake effect of the housing 1c on the airflow are reduced, further optimizing the aerodynamic performance of the narrow-faced housing 1c and improving the utilization efficiency of the main airflow.

[0077] In one embodiment, the synthetic jet exciter module 100 further includes a second protective cover 11, a fourth air guide structure 12, and a fifth air guide structure 13. The second protective cover 11 is disposed on the outer periphery of the piezoelectric sheet 3. The fourth air guide structure 12 is disposed on the side of the second protective cover 11 near the rear side and is inclined from the upper surface of the housing 1c toward the top surface of the second protective cover 11. The fifth air guide structure 13 is disposed on the side of the second protective cover 11 near the front side and is inclined from the top surface of the second protective cover 11 toward the upper surface of the housing 1c.

[0078] Reference Figure 14 and Figure 15 Specifically, the second protective cover 11 is a protective shell covering the piezoelectric element 3, fixed to the upper surface of the box 1c, forming a sealed protection for the piezoelectric element 3 to prevent water vapor and dust corrosion. The fourth air guiding structure 12 is located on the side of the second protective cover 11 near the rear side, and is an inclined air guiding slope transitioning from the upper surface of the box 1c to the top of the protective cover, rising smoothly from the upper surface of the box 1c to the top surface of the second protective cover 11; the fifth air guiding structure 13 is located on the side of the second protective cover 11 near the front side, and is an inclined air guiding slope transitioning from the top of the protective cover to the upper surface of the box 1c, falling smoothly from the top surface of the second protective cover 11 to the upper surface of the box 1c. The two air guiding structures are integrally formed with the protective cover, with smooth surfaces and no protrusions, forming symmetrical streamlined transition surfaces on both sides of the second protective cover 11, creating a streamlined top profile.

[0079] Specifically, the second protective cover 11 protrudes from the upper surface of the housing 1c. If the side of the protective cover is a vertical surface, airflow separation will occur on both sides, generating additional wind resistance and turbulence. The fourth air guiding structure 12 and the fifth air guiding structure 13 form inclined transition surfaces on both sides of the protective cover, allowing the airflow to rise along the fourth air guiding structure 12 to the top of the protective cover, and then descend along the fifth air guiding structure 13 to the upper surface of the housing 1c, achieving smooth airflow around the protective cover. By using the fourth air guiding structure 12 and the fifth air guiding structure 13 to allow the airflow to smoothly bypass the protective cover, the wind resistance increase caused by the piezoelectric protective cover is eliminated, the obstruction and wake effect of the protective cover on the airflow are reduced, the low wind resistance advantage of the narrow-face housing 1c is maintained, and the protective performance of the piezoelectric sheet 3 is not affected.

[0080] In one embodiment, the synthetic jet exciter module 100 further includes an elastic buffer pad 14, which is attached to the lower surface of the housing 1c.

[0081] Reference Figure 15Specifically, the elastic buffer pad 14 is a sheet-like buffer element with elasticity, made of elastic materials such as rubber, silicone, and foam, which has a certain buffering and shock absorption capacity and sound insulation effect. The shape of the pad matches the shape of the lower surface of the box 1c and is fixed to the bottom of the box 1c by adhesive or clips. When the module is installed on the bracket 210, the elastic buffer pad 14 is clamped between the box 1c and the bracket 210 to form an elastic buffer layer.

[0082] Specifically, during the operation of the synthetic jet exciter module 100, the high-frequency vibrations of the piezoelectric sheet 3 and the vibrating diaphragm 2 are transmitted to the housing 1 and the bracket 210, generating vibration noise and affecting the connection reliability of various components. Simultaneously, the hard contact between the module and the bracket 210 can cause wear and resonance problems. The elastic buffer pad 14 absorbs and isolates vibration energy, reducing the transmission of vibration to the bracket 210. The elastic buffer pad 14 buffers the vibration during module operation, reducing operating noise, improving installation stability, and extending service life.

[0083] In one embodiment, the synthetic jet exciter module 100 further includes a buffer structure 15, which is disposed on the nozzle 41. The buffer structure 15 forms a buffer cavity 151 through the nozzle 41 along the jet direction of the nozzle 41. The buffer cavity 151 connects the nozzle 41 with the outside. The inner diameter of the buffer cavity 151 is larger than the inner diameter of the nozzle 41.

[0084] Reference Figure 16 Specifically, the buffer structure 15 is an expanded-diameter cavity located outside the nozzle 41, fixedly connected to or integrally formed with the guide structure 4. A through-hole buffer cavity 151 is formed inside the buffer structure 15, with one end connected to the nozzle 41 and the other end connected to the outside. The inner diameter of the buffer cavity 151 is larger than that of the nozzle 41, with a smooth transition in the inner wall. The inner diameter of the buffer cavity 151 increases abruptly from the nozzle 41 to the inner diameter of the buffer cavity 151, without a gradual transition. The length and inner diameter of the buffer cavity 151 can be adjusted according to actual deceleration requirements to adapt to different jet parameters. When the airflow exits from the nozzle 41 and enters the buffer cavity 151, the sudden increase in the inner diameter of the buffer cavity 151 increases the circumference of the vortex ring. According to the principle of circulation conservation, the rotational speed and forward velocity of the vortex ring both decrease. After the vortex ring leaves the buffer cavity 151 and enters free space, due to self-induced contraction, the diameter of the vortex ring shrinks to near the initial nozzle 41 diameter, and the decrease in circumference causes the rotational speed and forward velocity to increase again.

[0085] Specifically, the high-speed vortex ring ejected from nozzle 41 has a high forward velocity, which could potentially tear the waterproof and breathable membrane 16 if it acts directly on it. The buffer chamber 151 decelerates the vortex ring within its confines, reducing its forward velocity to a level that the waterproof and breathable membrane 16 can withstand, thus protecting internal functional components. Simultaneously, the buffered jet still possesses sufficient annular velocity, allowing the vortex ring to self-induce contraction and then accelerate again after leaving the buffer chamber 151, restoring its ability to damage the boundary layer. By decelerating and then accelerating the vortex ring jet through the buffer chamber 151, the destructive effect of the vortex ring on the boundary layer is preserved while protecting the waterproof and breathable membrane 16 from tearing, thereby improving the module's operational reliability and component lifespan.

[0086] In one embodiment, the synthetic jet exciter module 100 further includes a waterproof and breathable membrane 16, which is disposed on at least one of the through-hole 42, the flow guiding structure 4, the nozzle 41, and the outlet of the buffer chamber 151.

[0087] Reference Figure 13-15 Specifically, the waterproof and breathable membrane 16 is a functional membrane material with breathable and waterproof properties. It can be made of materials such as expanded polytetrafluoroethylene membrane. The air permeability of the membrane material meets the airflow requirements of the jet, while blocking liquid water and sand particles from passing through. The waterproof and breathable membrane 16 can be set at the through-hole 42, inside the flow guiding structure 4, at the nozzle 41, or at the outlet of the buffer chamber 151. The installation position can be selected according to the working conditions, or multiple locations can be set at the same time. The membrane material is fixed to the installation position by hot-press welding, ultrasonic welding, or clamping rings to ensure that the edges are sealed and leak-proof. Furthermore, in order to increase the rate at which air passes through the waterproof and breathable membrane 16 and thus optimize the ejected gas rate, the position of the waterproof and breathable membrane 16 can be adjusted from the nozzle 41 to a position within the cavity that is close to but not in contact with the main cavity outlet. Specifically, this can be achieved by designing a groove within the cavity and a sealing ring on the edge of the waterproof and breathable membrane 16, which is then inserted into the groove. To facilitate the installation of the waterproof and breathable membrane 16 into the groove, the cavity can also be cut off at the groove location and a threaded or external bolt connection structure can be designed. During the connection and installation, the sealing ring with the waterproof and breathable membrane 16 is fixed in the groove, thereby maximizing the area of ​​the waterproof and breathable membrane 16 and thus improving the overall air output rate.

[0088] Specifically, in upward-venting applications, rainwater may enter the inner cavity 101 from the nozzle 41. The waterproof and breathable membrane 16 allows gas to be ejected and drawn in normally while preventing rainwater from entering the inner cavity 101, achieving a dual function of waterproofing and breathability. This solves the problem of water and dust easily entering the inner cavity 101 under outdoor conditions. By ensuring a continuous and effective jet of air to the condenser 300, the waterproof and breathable membrane 16 effectively prevents external rainwater from entering the inner cavity 101, significantly improving the module's protection level and making it suitable for harsh outdoor environments such as rain, snow, and dust storms.

[0089] In one embodiment, the waterproof and breathable membrane 16 is provided with reinforcing ribs 17 on the side near the inner cavity 101 and / or on the side away from the inner cavity 101.

[0090] Reference Figure 13-15 Specifically, the reinforcing rib 17 is a support structure located on one or both sides of the waterproof and breathable membrane 16. It can be grid-like or strip-like, made of rigid plastic or metal, and fixedly connected to the surrounding shell structure 1 to provide uniform support for the waterproof and breathable membrane 16. The reinforcing rib 17 has a high proportion of open area, which will not significantly obstruct airflow, while also dispersing the pressure on the membrane material.

[0091] Specifically, the high-speed gas ejected from nozzle 41 impacts the waterproof and breathable membrane 16. Prolonged impact may cause the membrane 16 to deform or tear under the pressure of the high-pressure jet or the pressure difference between the inside and outside. The reinforcing ribs 17 provide additional physical support to the waterproof and breathable membrane 16, dispersing the airflow impact force, sharing the pressure on the membrane material, and preventing tearing under high-speed airflow impact. The reinforcing ribs 17 enhance the mechanical strength and pressure-bearing capacity of the waterproof and breathable membrane 16, preventing tearing under high-speed airflow impact, ensuring the long-term reliability of the membrane 16, extending the membrane material replacement cycle, and reducing maintenance costs.

[0092] In one embodiment, the outer peripheral wall of the housing 1 is provided with a plurality of fixing parts 18, which are distributed at intervals along the circumference of the housing 1, and the fixing parts 18 are formed by protruding outward from the outer peripheral wall of the housing 1.

[0093] Reference Figure 15 Specifically, the fixing part 18 is a mounting ear structure that protrudes outward from the outer peripheral wall of the housing 1. Multiple fixing parts 18 are evenly spaced along the circumference of the housing 1, and each fixing part 18 has a mounting hole or a snap-fit ​​structure. The fixing part 18 is integrally formed with the housing 1, has high structural strength, and is used to fix the module to the bracket 210. The installation method can be selected from various forms such as bolt locking, snap-fit ​​connection, and welding fixation, which can adapt to different bracket 210 structures and installation scenarios.

[0094] Specifically, the synthetic jet exciter module 100 needs to be stably fixed on the bracket 210 to ensure the accurate and constant positional relationship between the nozzle 41 and the condenser 300 fins 301. The fixing part 18 protrudes outward from the outer peripheral wall of the housing 1, without occupying the space of the inner cavity 101, while providing sufficient connection area for fixing with the bracket 210. The circumferentially distributed fixing parts 18 ensure uniform installation force and prevent vibration-induced loosening. The fixing part 18 achieves a stable installation of the synthetic jet exciter module 100 on the bracket 210, ensuring the accuracy of the positional relationship between the nozzle 41 and the fins 301. The module is easy and reliable to install and disassemble, facilitating assembly and subsequent maintenance and replacement, and improving the module's versatility and installation flexibility.

[0095] In one embodiment, the synthetic jet exciter module 100 further includes a partition structure disposed in the housing 1 to divide the inner cavity 101 into multiple sub-cavities, wherein a vibrating diaphragm 2 and a piezoelectric sheet 3 form a group of synthetic jet exciter sub-units; wherein each sub-cavity is configured to be excited by at least a group of synthetic jet exciter sub-units, and each sub-cavity is provided with at least one flow guiding structure 4.

[0096] Specifically, the partition structure (not shown in the figure) is a partition plate set inside the housing 1, which divides the entire inner cavity 101 into multiple independent sub-cavities (not shown in the figure), and the sub-cavities are not interconnected. The partition plate is integrally formed with the housing 1 or sealed and fixed to ensure the airtightness of each sub-cavity. A vibrating diaphragm 2 and a piezoelectric sheet 3 form a set of synthetic jet exciter sub-units. Each sub-cavity is configured to be excited by at least one set of synthetic jet exciter sub-units. That is, a single sub-cavity can be driven by one set of synthetic jet exciter sub-units or by multiple sets of synthetic jet exciter sub-units. When multiple sets of sub-units drive the same sub-cavity at the same time, the vibration of each vibrating diaphragm 2 is superimposed to generate a larger volume change and a higher jet intensity. Each sub-cavity is equipped with at least one flow guiding structure 4. That is, a single sub-cavity can be configured with one flow guiding structure 4 to form a single nozzle 41 output, or multiple flow guiding structures 4 to form multi-directional or multi-nozzle 41 output, and multiple auxiliary flow guiding structures 4b can also be configured to adapt to different jet coverage requirements. Multiple sub-units are integrated in the same housing 1. Each sub-unit can be controlled and driven independently or synchronously to adapt to different jet output requirements.

[0097] Specifically, the heat dissipation capacity of a single synthetic jet exciter module 100 is limited by the size of a single inner cavity 101 and nozzle 41. By dividing the inner cavity 101 into multiple sub-cavities through a partition structure, multiple independent jet output units are realized within the same housing 1, significantly improving the jet coverage and heat dissipation capacity of a single module. Simultaneously, each sub-cavity can be configured with multiple sets of sub-units for joint excitation, generating a larger volume change and higher jet intensity compared to a single set of sub-units, meeting the higher demands for jet intensity under high heat dissipation load scenarios. Each sub-cavity can be configured with multiple flow guiding structures 4 to achieve multi-directional or multi-nozzle 41 output, further expanding the jet coverage. Each sub-cavity operates independently; a failure in one sub-cavity does not affect the operation of other sub-cavities, improving overall reliability. Integrating multiple jet sub-units within a single housing 1 through a partition structure significantly improves heat exchange efficiency and module integration, reduces the number of modules installed, simplifies the overall structure, and allows for flexible configuration of sub-units and flow guiding structures 4 to adapt to different heat dissipation requirements, improving operational redundancy.

[0098] Reference Figure 17 and Figure 18 This invention also provides a synthetic jet actuator module assembly 200, including a support 210 and multiple synthetic jet actuator modules 100. The synthetic jet actuator modules 100 are the same as those in the above embodiments, and the multiple synthetic jet actuator modules 100 are arranged in an array on the support 210. The synthetic jet actuator module 100 has been described in detail in the above embodiments, and for the sake of brevity, it will not be described again here.

[0099] Specifically, the bracket 210 is a support frame 211 structure used to support and fix multiple synthetic jet exciter modules 100. Its material can be aluminum alloy, which has better heat dissipation performance, or injection-molded ABS or flame-retardant engineering plastic. The bracket 210 adopts a hollow frame 211 design, maximizing the ventilation area while ensuring structural support strength and reducing obstruction of the main airflow. Multiple synthetic jet exciter modules 100 are arranged in an array on the bracket 210. The array of multiple synthetic jet exciter modules 100 can be staggered to cover the entire condenser 300, ensuring the uniformity of the jet effect. The synthetic jet exciter modules 100 are fixed to the bracket 210 by means of slots, bolt connections, snap-fit ​​connections, or welding. The fixing position corresponds to the fixing part 18 on the outer periphery of the module. The injection port of the synthetic jet exciter module 100 is a certain distance from the surface of the condenser 300 fins 301, and the injection direction is parallel to the surface of the fins 301, or at a certain angle to the surface of the fins 301. The windward side of the bracket 210 is designed with a curved surface or an acute angle structure to reduce the impact on the overall flow resistance.

[0100] Specifically, the jet coverage of a single synthetic jet exciter module 100 is limited, making it difficult to achieve uniform boundary layer disruption across the entire surface of the condenser 300. By arranging multiple synthetic jet exciter modules 100 in an array on the support 210 to form a modular assembly structure, the batch-arranged synthetic jet exciter modules 100 can work synergistically to disrupt the air boundary layer on the surface of the condenser 300 fins 301. This enables large-area coverage of the entire fin surface of the condenser 300 fins 301, ensuring effective disruption of the boundary layer at all locations and improving overall heat exchange efficiency. The array-distributed assembly structure achieves comprehensive jet coverage of the condenser 300 fin surface, improving the uniformity and effectiveness of overall heat dissipation enhancement. Furthermore, the standardized assembly structure can be directly adapted to condensers 300 of different sizes, offering strong adaptability and low installation and maintenance costs.

[0101] In one embodiment, the support 210 includes a frame 211, a plurality of transverse ribs 212a and a plurality of longitudinal ribs 212b. The plurality of transverse ribs 212a and the plurality of longitudinal ribs 212b are staggered within the frame 211. The synthetic jet exciter module 100 is fixed one-to-one at the staggered connection of each transverse rib 212a and longitudinal rib 212b.

[0102] Reference Figure 17 Specifically, frame 211 is the outer perimeter frame structure of support 210. Multiple transverse ribs 212a extend along the transverse direction of frame 211, and multiple longitudinal ribs 212b extend along the longitudinal direction of frame 211. The transverse ribs 212a and longitudinal ribs 212b are perpendicularly and intersectingly connected within frame 211 to form a regular grid-like support structure. The intersection points are the module mounting positions, and each point corresponds to fixing a synthetic jet exciter module 100, forming a uniform row and column array arrangement. The cross-section of the ribs can be designed as streamlined or acute-angled, with rounded corners in the direction of airflow to further reduce wind resistance and reduce airflow separation. The ribs and outer frame can be integrally molded, resulting in high overall structural strength, uniform stress distribution, and resistance to deformation.

[0103] Specifically, the grid-like structure formed by the interlacing of transverse ribs 212a and longitudinal ribs 212b provides uniformly distributed fixed points for the synthetic jet exciter module 100, allowing the modules to be arranged in a regular row and column pattern on the support 210 with consistent spacing between adjacent modules. This ensures uniform jet coverage without blind spots, while the perforated grid structure provides high ventilation and minimal obstruction of the main airflow, thus not significantly increasing duct pressure loss. This enhances heat dissipation while minimizing impact on the existing fan 400 cooling system. The grid-like support 210 structure achieves uniform distribution of the synthetic jet exciter module 100, ensuring a large-area coverage of the condenser 300 fins 301 surface by the jet.

[0104] It is understandable that in other embodiments, when the area of ​​the frame 211 is small, multiple synthetic jet actuator modules 100 may be arranged at intervals only on the transverse ribs 212a or longitudinal ribs 212b. If the area of ​​the frame 211 is large, empty transverse ribs 212a or longitudinal ribs 212b where no synthetic jet actuator modules 100 are arranged may be added to improve the support strength.

[0105] In one embodiment, the support 210 includes a frame 211 and a plurality of support ribs 212c. The plurality of support ribs 212c are arranged in parallel along the transverse or longitudinal direction within the frame 211, and a plurality of synthetic jet exciter modules 100 are arranged at intervals along the length direction of the support ribs 212c.

[0106] Reference Figure 18 Specifically, the frame 211 is the outer perimeter frame structure of the support 210. Multiple support ribs 212c are arranged parallel to each other in the transverse or longitudinal direction within the frame 211, with a certain distance between adjacent support ribs 212c. The structure is simple and has lower processing and manufacturing costs, and is suitable for the synthetic jet exciter module 100 of the long slit nozzle 41. Multiple synthetic jet exciter modules 100 are arranged at intervals along the length direction of each support rib 212c, forming a linear array distribution along a single direction. Multiple modules can be fixed on a single support rib 212c, and the spacing between modules can be flexibly adjusted according to heat dissipation requirements. When arranged along the arrangement direction of the fins 301, the modules on a single rib can simultaneously cover multiple rows of fins 301, resulting in continuous and uniform jet action.

[0107] Specifically, the parallel support ribs 212c have a simple structure and are easy to manufacture. The synthetic jet exciter module 100 is arranged at intervals along the length of the support ribs 212c, which is suitable for scenarios where the fins 301 of the condenser 300 extend in a certain direction. The jet evenly covers the fins 301 along their extension direction, and can flexibly match condensers 300 with different length-to-width ratios. Installation and disassembly are convenient, and the operation is simple when replacing the module for later maintenance. At the same time, the fewer ribs can further reduce wind resistance and reduce interference with the main airflow, making it suitable for scenarios with high requirements for airflow pressure loss. The linear array arrangement of the synthetic jet exciter module 100 is achieved through the parallel support ribs 212c structure. The bracket 210 has a simple structure, low manufacturing cost, and is suitable for condensers 300 where the fins 301 extend in a single direction.

[0108] It is understandable that in other embodiments, if the area of ​​the frame 211 is large and the support ribs 212c alone are not sufficient to meet the support strength requirements, empty transverse ribs 212a or longitudinal ribs 212b that are not arranged with the synthetic jet exciter module 100 can be added to improve the support strength.

[0109] In one embodiment, the support 210 is divided into a first density region and a second density region, wherein the number of synthetic jet exciter modules 100 in the first density region is greater than the number of synthetic jet exciter modules 100 in the second density region.

[0110] Specifically, the bracket 210 is divided into a first density region (not shown in the figure) and a second density region (not shown in the figure) according to the heat dissipation requirements of different locations on the condenser 300. The first density region has a higher distribution density of the synthetic jet exciter modules 100, while the second density region has a lower distribution density. The first density region corresponds to areas on the condenser 300 with lower surface wind speed and a thicker air boundary layer, including the area behind the central hub of the fan 400, the gap between fans 400, and the periphery of the condenser 300—areas with weak heat dissipation. A denser arrangement of modules in this region can specifically enhance the boundary layer disruption effect. The second density region corresponds to areas on the condenser 300 with higher surface wind speed and a relatively thinner boundary layer, including the central area directly opposite the fan 400. Appropriately reducing the number of modules can avoid redundant arrangement, reducing cost and wind resistance. The density difference can be achieved by adjusting the spacing between modules on the same rib or by adjusting the spacing between ribs.

[0111] Specifically, the airflow velocity distribution on the surface of the condenser 300 is uneven. Areas with low airflow velocity have a thicker boundary layer, resulting in a more severe heat dissipation bottleneck. If a uniform density module distribution is used, the jet enhancement in low-velocity areas is insufficient, while excessive jet flow in high-velocity areas leads to waste. By using a differentiated density distribution, the number of modules is increased in low-velocity areas to significantly reduce the boundary layer thickness, while the number of modules is reduced in high-velocity areas to save costs. This achieves optimal heat dissipation improvement with the fewest modules, significantly improving the cost-effectiveness of the solution. Simultaneously, it avoids increased wind resistance and energy waste caused by excessive placement in high-velocity areas, minimizing overall system energy consumption while enhancing heat dissipation. The differentiated density distribution optimizes the layout efficiency of the synthetic jet exciter module 100, achieving a superior overall heat dissipation enhancement effect with the same total number of modules.

[0112] Reference Figures 1-22This invention also provides a heat dissipation system, including a condenser 300, a fan 400, and a synthetic jet exciter module assembly 200. The condenser 300 has fins 301, and the synthetic jet exciter module assembly 200 is the same as the synthetic jet exciter module assembly 200 described in the above embodiments. The synthetic jet exciter module assembly 200 is located on the air inlet side of the condenser 300, and the fan 400 is located on the air outlet side of the condenser 300 or the air inlet side of the synthetic jet exciter module assembly 200. The nozzle 41 of the synthetic jet exciter module assembly 200 sprays towards the surface of the fins 301 of the condenser 300. This synthetic jet exciter module assembly 200 has been described in detail in the above embodiments, and for the sake of brevity, it will not be described again here.

[0113] Specifically, the condenser 300 can be a finned tube structure 301, or it can be a parallel flow or other types of structure. Multiple parallel fins 301 form airflow channels, and the heat exchange medium flows inside the coil. Under forced convection conditions, a laminar air boundary layer exists on the surface of the fins 301. The fan 400 is an axial flow fan 400, which is an active air supply device to provide forced convection. It is located on the air outlet side of the condenser 300. During operation, a negative pressure is formed on the air outlet side, driving the airflow to flow in from the air inlet side. The air flows through the flow channels between the fins 301 of the condenser 300 through exhaust or supply air. The synthetic jet exciter module assembly 200 is located on the air inlet side of the condenser 300. That is, air passes through the synthetic jet exciter module assembly 200 before entering the flow channel of the condenser 300 fins 301. The nozzle 41 of the synthetic jet exciter module assembly 200 sprays air towards the surface of the condenser 300 fins 301. The vortex-shaped jet ejected by the synthetic jet module acts on the surface of the fins 301, actively disrupting the laminar boundary layer. Simultaneously, the main airflow carries away the stripped hot air, creating a synergistic heat dissipation effect. It is understood that in other embodiments, the fan 400 may also be located on the air inlet side of the synthetic jet exciter module assembly 200.

[0114] Specifically, traditional cooling systems rely solely on fan 400 for forced convection. The laminar air boundary layer on the surface of fins 301 has extremely low thermal conductivity, which is the main bottleneck restricting the improvement of convective heat transfer efficiency. Simply increasing the fan 400 speed can enhance heat transfer, but it also drastically increases noise. This cooling system adopts a collaborative architecture with fan 400 as the main component and synthetic jet as a secondary component. The main airflow is responsible for overall convective heat transfer, while the synthetic jet is responsible for overcoming the boundary layer thermal resistance bottleneck. Fan 400 provides mainstream forced convection to remove heat, while synthetic jet exciter module 100 actively disrupts the boundary layer on the surface of fins 301 to reduce thermal resistance and improve the convective heat transfer coefficient. The two work synergistically. The jet velocity of synthetic jet exciter module 100 is much higher than the background wind speed, and the resulting vortex ring has strong penetrating power, effectively penetrating and disturbing the boundary layer against the background airflow of fan 400. Through the collaborative architecture of fan 400 and synthetic jet exciter module 100, the active disruption of the boundary layer by the jet is superimposed on the forced convection of fan 400, which significantly breaks through the thermal resistance limitation and greatly improves the convective heat transfer coefficient. Under the same heat dissipation requirements, the speed of fan 400 can be reduced to achieve noise reduction during operation, or the volume of condenser 300 can be reduced to achieve equipment miniaturization. Under the same volume and fan speed of 400, the cooling power of the equipment can be directly increased to adapt to different application requirements.

[0115] In one embodiment, the nozzle 41 of at least one synthetic jet actuator module 100 in the synthetic jet actuator module assembly 200 extends along the fin arrangement direction of the condenser 300, and the size of the nozzle 41 in the fin arrangement direction is greater than or equal to the spacing between two adjacent fins 301.

[0116] Specifically, at least one synthetic jet exciter module 100 has a nozzle 41 extending along the fin arrangement direction of the condenser 300 to form a long, narrow slit-shaped nozzle 41. The length direction is consistent with the fin arrangement direction of the fins 301. The size of the nozzle 41 in the fin arrangement direction is greater than or equal to the spacing between two adjacent fins 301, so that a single nozzle 41 can simultaneously cover the flow channel between one or more fins 301. The length of a single nozzle 41 can cover multiple rows of adjacent fins 301. After the jet is ejected, it extends along the length direction of the fins 301 and can simultaneously act on the surface boundary layer of multiple fins 301. When the fins 301 of the condenser 300 extend longitudinally and multiple fins 301 are arranged laterally at intervals, the long, narrow slit-shaped nozzle 41 extends laterally along the fin arrangement direction of the fins 301, and the ejected long, narrow jet can simultaneously cover the gaps between multiple fins 301. The modules of the slit nozzle 41 are arranged at intervals along the direction perpendicular to the fins 301, forming multiple rows of coverage, which allows the entire heat exchange surface of the condenser 300 to be uniformly acted upon by the jet.

[0117] Specifically, traditional small circular nozzles 41 can only cover the gap between a single fin 301, requiring a large number of nozzles 41 to cover the entire condenser 300 area, resulting in a large number of modules and a large total windward area. The elongated, narrow slit-shaped nozzles 41, with a dimension larger than the spacing between adjacent fins 301 in the fin arrangement direction, can cover multiple fin gaps with a single nozzle 41. The ratio of the nozzle 41's affected area to the area where the synthetic jet exciter module 100 blocks the mainstream wind is larger, offering better cost-effectiveness and significantly increasing the jet coverage area of ​​a single module. Compared to traditional circular nozzles 41, this method has higher coverage efficiency, reduces the total number of required modules, lowers assembly costs and overall wind resistance, and allows for a wider range of interaction between the jet and the fin 301 surface, resulting in better uniformity of boundary layer disruption and a more significant overall heat transfer improvement. By extending the nozzles 41 along the fin arrangement direction and with a dimension larger than the fin spacing, a single nozzle 41 can cover multiple fin gaps, reducing the number of required modules, lowering the total windward area, and reducing obstruction of the mainstream wind.

[0118] Reference Figures 19-22 This invention also provides a temperature control device, comprising: a housing 500, the housing 500 having an air inlet 501 and an air outlet 502; and a heat dissipation system, which is the heat dissipation system described in the above embodiment, and is disposed within the housing 500; wherein an airflow channel is formed between the air inlet 501, the condenser 300, and the air outlet 502. This heat dissipation system has been described in detail in the above embodiments, and for the sake of brevity, it will not be repeated here.

[0119] Specifically, the outer casing 500 is the external housing of the temperature control device, which can be made of galvanized sheet metal or aluminum alloy, with corresponding protection levels, suitable for outdoor industrial scenarios. It is equipped with an air inlet 501 and an air outlet 502. The air inlet 501 is used for the intake of external air, and the air outlet 502 is used for the exhaust of hot air. A removable dust filter can be installed at the air inlet 501 to filter sand and dust impurities in the air, reduce the probability of nozzle 41 clogging, and extend the cleaning and maintenance cycle. The heat dissipation system is located inside the outer casing 500, including a condenser 300, a fan 400, and a synthetic jet exciter module assembly 200. The condenser 300, the jet assembly, and the fan 400 are sequentially fixed on the mounting bracket 210 inside the outer casing 500 along the airflow direction, ensuring smooth airflow and low pressure loss. An airflow channel is formed between the air inlet 501, the condenser 300, and the air outlet 502. External air enters through the air inlet 501, flows through the flow channel between the synthetic jet exciter module assembly 200 and the fins 301 of the condenser 300, and is exhausted from the air outlet 502 by the fan 400, carrying away the condensed heat. An independent, sealed electrical control compartment can also be installed inside the housing 500 to house the drive power supply and control board, isolated from the main air duct to prevent moisture and dust from affecting the operational reliability of electrical components. The temperature control device can be used for equipment requiring heat dissipation from the condenser 300, such as air conditioner outdoor units and liquid chillers.

[0120] Specifically, the temperature control device encapsulates the heat dissipation system within a housing 500. A complete airflow channel is formed between the air inlet 501, the condenser 300, and the air outlet 502, ensuring smooth airflow from the air inlet 501, heat exchange through the fins 301 of the condenser 300, and exhaust from the air outlet 502. The synthetic jet exciter module assembly 200 is located on the air inlet side of the condenser 300, disrupting the boundary layer on the surface of the fins 301 before the air enters the flow channel, thus improving heat exchange efficiency. This temperature control device integrates a synthetic jet enhanced heat dissipation architecture, effectively improving heat dissipation capacity without significantly increasing device size and production costs. It balances multiple requirements such as low noise, miniaturization, and high power density, featuring a compact overall structure and high integration. It can be directly adapted to various temperature control equipment scenarios such as industrial liquid chillers and air conditioner outdoor units, making it widely applicable. The combination of the outer casing 500, air inlet 501, air outlet 502 and heat dissipation system forms a complete heat dissipation channel for the temperature control equipment, ensuring that the synergistic heat dissipation effect of the synthetic jet and the fan 400 can be fully utilized.

[0121] Reference Figures 19-20 Optionally, the air inlet 501 is located on the side of the housing 500, the air outlet 502 is located at the front of the housing 500, and the fan 400 is located on the side of the condenser 300 near the air outlet 502. Air enters from the air inlet 501, flows through the condenser 300, and is discharged forward from the air outlet 502.

[0122] Reference Figures 21-22 Optionally, the air inlet 501 is located on the side and / or front of the housing 500, the air outlet 502 is located on the top of the housing 500, and the fan 400 is located on the side of the condenser 300 near the air outlet 502. Air enters from the air inlet 501, flows through the condenser 300, and is discharged upward from the air outlet 502. In addition, the temperature control device also includes a baffle 503 for shielding from rain and guiding airflow. The baffle 503 is located above the air outlet 502 and has a first air guiding slope 5031 and a second air guiding slope 5032. One side edge of the first air guiding slope 5031 is connected to one side edge of the second air guiding slope 5032. Both the first air guiding slope 5031 and the second air guiding slope 5032 extend from their connected side edges in a direction away from each other and slope upward.

[0123] Reference Figure 23 This invention also provides a control method for a temperature control device, which is the same temperature control device described in the above embodiments. This temperature control device has been described in detail in the above embodiments and will not be repeated here for the sake of brevity. The method includes steps S1-S3: S1. Obtain the temperature parameters of the temperature control device; S2. Determine the fan speed operating parameters and the jet intensity operating parameters of the synthetic jet exciter module based on the temperature parameters; S3. Control the operation of the fan according to the wind speed operating parameters, and control the operation of the synthetic jet exciter module according to the jet intensity operating parameters.

[0124] In this embodiment, the temperature parameter is a thermodynamic parameter reflecting the heat dissipation load and operating status of the temperature control equipment, used as the input basis for coordinated control of the fan and the synthetic jet exciter module; the wind speed parameter is an operating parameter that controls the fan speed and air delivery capacity. The higher the fan speed, the greater the wind speed, and the more air flows through the condenser fins per unit time; the jet intensity parameter is an operating parameter that controls the output jet intensity of the synthetic jet exciter module, including at least one of the driving voltage, driving frequency, and duty cycle. The higher the jet intensity, the greater the vortex ring jet velocity, and the stronger the ability to destroy the air boundary layer on the fin surface.

[0125] Specifically, firstly, the temperature parameters of the temperature control equipment are collected in real time through corresponding temperature sensing elements or communication interfaces, and the collected real-time data is transmitted to the control unit. Secondly, the control unit processes the temperature parameters according to preset control logic to match the fan speed operating parameters and the jet intensity operating parameters of the synthetic jet exciter module under the current operating conditions. Subsequently, the fan speed operating parameters are output to the fan drive circuit to control the fan to run at a determined speed, and the jet intensity operating parameters are output to the synthetic jet exciter module drive circuit to control the synthetic jet exciter module to run at a determined jet intensity. Simultaneously, the operating status is fed back to the main control system of the equipment in real time. The control board of the synthetic jet exciter module and the main control board of the temperature control equipment can communicate via analog signals, digital signals, RS485 bus, CAN bus, or wireless methods to control the start / stop, intensity setting, and operating mode of the synthetic jet exciter module, and to provide real-time feedback on the operating status and fault information of the synthetic jet exciter module, ensuring the stability of command transmission and status feedback.

[0126] Specifically, traditional temperature control equipment only controls the fan speed based on temperature. When the heat dissipation demand increases, the fan speed can only be increased. However, the heat dissipation efficiency is limited by the boundary layer thermal resistance, and the noise increases sharply, making it difficult to balance energy consumption and noise. In contrast, the coordinated control of the synthetic jet exciter module and the fan can not only increase the fan speed when the heat dissipation demand increases, but also activate or enhance the jet intensity of the synthetic jet exciter module. This actively breaks through the boundary layer thermal resistance bottleneck and uses the vortex ring jet to actively destroy the air boundary layer on the fin surface to improve the heat transfer coefficient. Thus, the heat dissipation demand is met without significantly increasing the fan speed. The operating status of both can be dynamically matched according to the actual heat dissipation demand, realizing flexible adjustment of heat dissipation capacity. This solves the technical problem that traditional control methods cannot balance heat dissipation performance and low-noise operation.

[0127] For example, taking an outdoor unit of an air conditioner as an example, when the ambient temperature is low, causing the condenser temperature T_cond to be 30℃, the heat dissipation demand is small, and the control method only needs to control the fan to run at a low speed to meet the heat dissipation demand. When the ambient temperature rises, causing T_cond to rise to 40℃, the control method not only increases the fan speed, but also activates the synthetic jet exciter module to generate a vortex ring jet to destroy the boundary layer on the fin surface. The two work together to enhance heat dissipation. Compared with the traditional solution that relies solely on fan heat dissipation, under the same heat dissipation load, the heat transfer coefficient is improved due to the destruction of the boundary layer by the synthetic jet, so the fan speed can be reduced to meet the heat dissipation demand, effectively reducing operating noise. Taking an industrial liquid cooling unit as an example, the system collects the loop return water temperature T_back in real time as a temperature parameter. When T_back is lower than the set heat dissipation threshold, it is determined that the heat dissipation demand is low, and the fan is controlled to maintain low speed operation and the synthetic jet is turned off to meet the basic heat dissipation demand while reducing energy consumption and noise. When T_back is higher than the set heat dissipation threshold, the fan speed and jet intensity are increased simultaneously to enhance the heat exchange capacity of the condenser and ensure the cooling effect.

[0128] By coordinating and controlling the fan speed and the jet intensity of the synthetic jet exciter module based on temperature parameters, the fan and the synthetic jet exciter module can operate in tandem. This achieves both heat dissipation requirements and low-noise operation, flexibly adapting to different heat dissipation loads and balancing energy efficiency and heat dissipation effect. At the same time, the fan speed can be reduced to decrease operating noise under the same heat dissipation requirements.

[0129] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A synthetic jet exciter module, characterized in that, The synthetic jet exciter module, used for heat dissipation from the condenser fins, includes: A housing, wherein a sealed internal cavity is formed inside the housing; A vibrating diaphragm is disposed on the housing and forms at least a portion of the cavity wall of the inner cavity; A piezoelectric element is attached and fixed to the vibrating diaphragm to drive the vibrating diaphragm to reciprocate and change the volume of the inner cavity. A flow guiding structure is provided on the housing, the flow guiding structure having a through-hole connecting the inner cavity and a nozzle connecting the outside; when the volume of the inner cavity changes, the airflow is drawn in or ejected through the nozzle, and when ejected, a vortex ring jet is formed; The flow guiding structure is configured such that the jet direction of the nozzle is directed toward the surface of the fin.

2. The synthetic jet exciter module according to claim 1, characterized in that, The housing includes an upper housing and a base, the upper housing and the base are detachably connected, the flow guiding structure is provided on the upper housing, the interior of the upper housing and the interior of the base define the inner cavity, the base has an opening on the side away from the upper housing, the vibrating diaphragm closes the opening to form the cavity wall of the inner cavity, and the piezoelectric sheet is attached and fixed to the side of the vibrating diaphragm facing away from the inner cavity.

3. The synthetic jet exciter module according to claim 2, characterized in that, The flow guiding structure is a hollow tube, which is located on the top surface of the upper shell. One end of the tube is the through-hole that penetrates the top surface of the upper shell to connect to the inner cavity, and the other end of the tube is the nozzle to connect to the outside. The tube is arranged vertically or at an angle relative to the top surface of the upper shell.

4. The synthetic jet exciter module according to claim 3, characterized in that, The tube is an inclined tube, and the extension height of the inclined surface on one side near the nozzle is higher than the extension height of the opposite inclined surface, so that the inclined surface with the higher extension height serves as the water-blocking surface of the nozzle.

5. The synthetic jet exciter module according to claim 2, characterized in that, The flow guiding structure is provided in multiple ways, at least one of the flow guiding structures is a main flow guiding structure, and at least one of the flow guiding structures is an auxiliary flow guiding structure. The spray direction of the nozzle of the main flow guiding structure is towards the surface of the fin. The through-hole of the auxiliary flow guiding structure is located at the lowest point of the inner cavity and gradually decreases from the through-hole to the corresponding nozzle.

6. The synthetic jet exciter module according to claim 5, characterized in that, It also includes a water-absorbing element, which is inserted into the auxiliary flow guiding structure. One end of the water-absorbing element near the inner cavity contacts the lowest point of the inner cavity, and the other end of the water-absorbing element away from the inner cavity extends out of the nozzle of the auxiliary flow guiding structure.

7. The synthetic jet exciter module according to claim 2, characterized in that, The outer peripheral wall of the upper shell and / or the base is provided with a plurality of heat dissipation structures, the plurality of heat dissipation structures are distributed at intervals along the circumference of the shell, and each heat dissipation structure extends along the airflow direction.

8. The synthetic jet exciter module according to claim 2, characterized in that, It also includes a first protective cover, which is disposed on the outer periphery of the piezoelectric sheet.

9. The synthetic jet exciter module according to claim 1, characterized in that, The housing is a box, and the interior of the box forms the inner cavity. The box has opposing upper and lower surfaces, and the upper surface has an opening. The vibrating diaphragm closes the opening to form the cavity wall of the inner cavity. The piezoelectric sheet is attached and fixed to the side of the vibrating diaphragm facing away from the inner cavity. The box has opposing front and rear sides, and the front side is connected to the flow guiding structure. The front and rear sides both extend along the width of the box to form a narrow and elongated shape.

10. The synthetic jet exciter module according to claim 9, characterized in that, The flow guiding structure is a long strip-shaped block. One side of the long strip-shaped block is the through-hole that penetrates the front side to connect to the inner cavity, and the other side of the long strip-shaped block is the nozzle to connect to the outside. The flow guiding structure extends along the width direction of the front side so that both the through-hole and the nozzle are long, narrow slits.

11. The synthetic jet exciter module according to claim 9, characterized in that, A third air guide structure is provided on the rear side, and the third air guide structure is inclined from the lower surface of the box to the upper surface of the box.

12. The synthetic jet exciter module according to claim 1, characterized in that, It also includes a buffer structure, which is disposed on the nozzle and forms a buffer cavity through the nozzle along the spray direction. The buffer cavity connects the nozzle to the outside. The inner diameter of the buffer cavity is larger than the inner diameter of the nozzle.

13. The synthetic jet exciter module according to claim 12, characterized in that, It also includes a waterproof and breathable membrane, which is disposed on at least one of the through-hole, the flow guiding structure, the nozzle, and the outlet of the buffer chamber.

14. The synthetic jet exciter module according to claim 13, characterized in that, The waterproof and breathable membrane is provided with reinforcing ribs on the side close to the inner cavity and / or on the side away from the inner cavity.

15. The synthetic jet exciter module according to claim 1, characterized in that, It also includes a partition structure disposed in the housing to divide the inner cavity into multiple sub-cavities, wherein a vibrating diaphragm and a piezoelectric sheet form a group of synthetic jet exciter sub-units; wherein each sub-cavity is configured to be excited by at least one group of synthetic jet exciter sub-units, and each sub-cavity is provided with at least one of the flow guiding structures.

16. A synthetic jet exciter module assembly, characterized in that, The device includes a support frame and multiple synthetic jet actuator modules, wherein the synthetic jet actuator modules are any one of the synthetic jet actuator modules according to claims 1 to 15, and the multiple synthetic jet actuator modules are arranged in an array on the support frame.

17. The synthetic jet exciter module assembly according to claim 16, characterized in that, The support is divided into a first density region and a second density region, wherein the number of synthetic jet exciter modules in the first density region is greater than the number of synthetic jet exciter modules in the second density region.

18. A heat dissipation system, characterized in that, The device includes a condenser, a fan, and a synthetic jet actuator module assembly. The condenser has fins, and the synthetic jet actuator module assembly is the synthetic jet actuator module assembly as described in any one of claims 16 to 17. The synthetic jet actuator module assembly is located on the air inlet side of the condenser, the fan is located on the air outlet side of the condenser or the air inlet side of the synthetic jet actuator module assembly, and the jetting direction of the nozzle of the synthetic jet actuator module assembly is towards the fin surface of the condenser.

19. The heat dissipation system according to claim 18, characterized in that, At least one of the synthetic jet actuator modules in the synthetic jet actuator module assembly has a nozzle that extends along the fin arrangement direction of the condenser, and the size of the nozzle in the fin arrangement direction is greater than or equal to the spacing between two adjacent fins.

20. A temperature control device, characterized in that, include: The housing is provided with an air inlet and an air outlet; A heat dissipation system, wherein the heat dissipation system is the heat dissipation system according to any one of claims 18 to 19, and the heat dissipation system is disposed within the housing; An airflow channel is formed between the air inlet, the condenser, and the air outlet.

21. A control method for a temperature control device, characterized in that, The temperature control device is the temperature control device according to claim 20, and the control method includes: Obtain the temperature parameters of the temperature control device; The fan speed operating parameters and the jet intensity operating parameters of the synthetic jet exciter module are determined based on the temperature parameters. The operation of the fan is controlled according to the wind speed operating parameters, and the operation of the synthetic jet exciter module is controlled according to the jet intensity operating parameters.

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