A modular fan device, a modular fan assembly, and methods of using the same

Abstract

The application relates to a modular fan device, a modular fan assembly and a use method thereof, and belongs to the technical field of air-cooled heat dissipation of electronic equipment. The application solves the problem that the vibration transmission between a fan and a case causes the fan to be damaged, and the problem that the workload is large when the whole electronic equipment fan is maintained or replaced. Meanwhile, the fan assembly can be modularized to adapt to different needs, the fan assembly is convenient to maintain, the vibration is isolated, and the fan assembly is not sensitive to environmental vibration. The modular fan assembly for electronic equipment is composed of several vibration-isolated fan modules through modular interfaces; each modular fan device comprises a fan cover, a fan body and a vibration isolation system; two kinds of modular interfaces which can be matched and interconnected are arranged on the fan cover, so that the modular fan devices can be assembled at will; and the vibration-isolated fan module is further provided with two kinds of electrical interfaces which can be internally connected for power supply. The application can isolate the vibration generated by the fan during operation from the electronic equipment; meanwhile, various combination modes can be formed to adapt to different needs, and the fan is convenient to maintain and replace.

Description

Technical Field

[0001] This invention belongs to the field of air-cooled heat dissipation technology for electronic devices, and particularly relates to modular fan devices, modular fan components and their usage methods. Background Technology

[0002] Electronic devices generate a significant amount of heat during operation. If this heat cannot be dissipated promptly, the internal temperature will rise, affecting the reliability of internal components and potentially causing them to burn out. Common heat dissipation methods include air cooling and water cooling. Air cooling is widely used in electronic devices due to its advantages of small size and high reliability. However, as a key component in air cooling, the fan can be damaged by high temperatures from prolonged operation and external vibrations and impacts. Multiple fans in electronic devices are typically housed within a single fan housing. When one fan fails, the entire fan housing usually needs to be removed, and the faulty fan removed from within the housing for replacement. This replacement process is very complex and must be performed while the device is stopped.

[0003] The dynamic imbalance of the fan blades and the friction between the blades and the air cause the fan to generate a large amount of vibration during operation. This vibration, when transmitted to electronic equipment, can easily cause resonance in the chassis panels and even affect the reliability of internal electronic components. On the other hand, when the chassis is subjected to external vibration loads, these loads can be transmitted to the fan and potentially damage the fan impeller. To prevent the mutual transmission of vibration between the fan and the chassis, this invention uses vibration-damping springs to suspend the fan on a fan cover, creating vibration isolation between the fan and the cover. The fan, vibration isolation system, fan cover, and fan cover plate constitute a vibration-damping fan module. This fan assembly is directly mounted to electronic equipment via the fan cover, providing vibration isolation between the fan and the chassis. This reduces the impact of the fan on the chassis and its internal equipment, as well as the impact of external vibrations on the fan structure. Furthermore, the modular design of the fan assembly allows for the replacement of different types of fan covers for different application scenarios. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a modular fan device, a modular fan assembly, and a method for using the same for air-cooled electronic equipment, in order to solve the problems of the impact of vibration between the fan and the fan cover on the fan itself and electronic equipment during operation, inconvenient maintenance and replacement, and inability to arbitrarily combine them to meet different needs.

[0005] The specific technical solution of this invention is as follows:

[0006] A modular fan unit includes a fan cover, a fan, and a vibration isolation system; the fan cover is provided with a modular interface for structural interconnection and a modular electrical interface for internal power supply; the vibration isolation system connects the fan cover and the fan through a fixed bracket to reduce the transmission of internal and external vibrations.

[0007] The fan cover includes a main frame, an external baffle, and a fan ventilation plate.

[0008] The main frame of the fan cover is a four-sided cylindrical structure with chamfered edges on all four sides, forming four outer sides and four side edges. A modular first electrical interface is provided on two adjacent outer sides, and a first modular interface is provided on the edge. A second electrical interface is provided on the other two adjacent outer sides, and a second modular interface is provided on the edge. A vibration isolation spring mounting column is provided in the middle of each of the four inner sides of the main frame of the fan cover.

[0009] The external baffle matches the outer side of the main frame of the fan cover; the external baffle is provided with a first modular interface on both sides, which matches and plugs into the second modular interface on the outer side of the main frame, or is provided with a second modular interface which matches and plugs into the first modular interface on the outer side of the main frame.

[0010] The fan ventilation plate overlaps the upper part of the main frame of the fan cover, matches the shape of the main frame of the fan cover, and is fixedly connected to the second fan fixing bracket; a positioning step is provided on the inner side, and a fan ventilation hole is provided in the middle.

[0011] The vibration isolation system includes 8 vibration isolation springs and 1 vibration isolation damping pad; one end of each vibration isolation spring is attached to the fan and fixed to the fixed bracket, and the other end is fastened to the vibration isolation spring mounting column.

[0012] The vibration isolation spring is an L-shaped spring band; the vibration isolation spring is provided with a fixed mounting hole, a vertical stiffness adjustment section, a transition arc section and a horizontal stiffness adjustment section.

[0013] The first modular interface is a convex dovetail groove, and the second modular interface is a concave dovetail groove;

[0014] The first electrical interface 12 is a voltage output port with two retractable contacts, and the second electrical interface 13 is a voltage input port with two contact pads.

[0015] A modular fan assembly includes multiple modular fan units, which are assembled together via modular interfaces on a fan cover. The modular interfaces are a first modular interface and a second modular interface that can be structurally fastened together, as well as a first electrical interface and a second electrical interface that can be touched and connected to each other.

[0016] An installation method for the modular wind turbine unit and modular wind turbine assembly:

[0017] S1: Install 4 vibration isolation springs on the side of the vibration isolation spring mounting column of the fan cover near the air inlet, and position them with vibration isolation spring mounting screws;

[0018] S2: Connect the first fan mounting bracket and the fan to the vibration isolation spring in sequence, and fix them with the vibration isolation spring mounting screws from step one;

[0019] S3: Install the other 4 vibration isolation springs on the side of the vibration isolation spring mounting column of the fan cover near the air outlet, and fix them with vibration isolation spring mounting screws; install the second fan mounting bracket; the fan fixing screws pass through the first fan mounting bracket, the fan and the second fan mounting bracket in sequence from one side of the first fan mounting bracket, and bind these three together.

[0020] S4: Attach the vibration damping pads to the top perimeter of the air outlet side of the fan cover;

[0021] S5: Install the fan ventilation plate onto the fan cover on the fan outlet side using the vibration isolation spring mounting screws;

[0022] S6: Insert both the outer baffle of the convex dovetail groove and the outer baffle of the concave dovetail groove into the four sides of the fan cover;

[0023] S7: Connect the power supply from terminal 15 of the modular fan unit;

[0024] S8: Installation of modular wind turbine components:

[0025] Multiple modular wind turbine units are assembled into a modular wind turbine assembly by combining and arraying them:

[0026] (A) Remove the external baffle of the convex dovetail groove or the external baffle of the concave dovetail groove corresponding to the assembly interface;

[0027] (B) A concave dovetail groove of one modular fan unit is inserted into a convex dovetail groove of another modular fan unit; or, a convex dovetail groove of one modular fan unit is inserted into a concave dovetail groove of another modular fan unit; and so on, to form a structurally modular fan assembly.

[0028] (C) In sync with (B), the second electrical interface of one modular wind turbine unit is inserted into the first electrical interface of another modular wind turbine unit; or, the first electrical interface of one modular wind turbine unit is inserted into the second electrical interface of another modular wind turbine unit; and so on, forming an internal power supply mode for the modular wind turbine components.

[0029] (D) Connect the power supply from the terminal 15 of the first modular fan unit of the modular fan assembly.

[0030] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0031] (1) The modular fan of the present invention can be used alone or can be easily spliced ​​into components for use; making the fan and electronic equipment cabinet structure relatively independent, and can be quickly disassembled for repair or replacement when the fan fails, effectively enhancing the maintainability of the fan.

[0032] (2) The modular fan of the present invention can be used alone or can be easily spliced ​​into components for use; making the application scenarios of the fan components more extensive; when the assembly array is not less than 2*2, the modular fan device except for the one connected to the external power supply component can be temporarily removed when the fan is working without affecting the normal operation of other modular fan devices, making it possible to quickly replace the faulty fan without stopping the machine.

[0033] (3) The fan cover and the fan are separated by vibration isolation springs. The vibration generated by the fan during operation is effectively reduced by the vibration isolation springs and then transmitted to the fan cover. This can reduce the damage caused by the fan vibration to the chassis structure. At the same time, when the chassis structure is subjected to external vibration, it can reduce the damage caused by the external vibration to the fan.

[0034] The fan ventilation panel is independent of the fan cover and can be replaced with different styles of fan ventilation panels, thus making the fan components more diversified and adaptable to different usage conditions. For example, a ventilation panel with small holes can be used when radiation protection is required, a ventilation panel with a larger through-hole area can be used when high ventilation rate is required, and a rainproof ventilation panel can be used when rain protection is required, etc.

[0035] (4) The present invention treats the fan and the fan cover as an integral component and uses the dovetail groove structure for quick positioning to realize the rapid assembly and disassembly of multiple fan components, making it easier and more convenient to replace the damaged fan; the fan is pressed and fixed inside the fan cover by 8 vibration isolation spring plates, realizing vibration isolation between the fan and the fan cover, so that the vibration generated by the fan during operation cannot be transmitted to the electronic equipment; at the same time, when the electronic equipment is subjected to external vibration load, it can reduce the impact of external vibration on the fan structure.

[0036] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0037] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0038] Figure 1 This is a schematic diagram of the modular wind turbine assembly structure of the present invention.

[0039] Figure 2 This is a schematic diagram of the 2*2 assembly array of the vibration isolation fan module of the present invention.

[0040] Figure 3 This is a schematic diagram of the main frame structure of the fan cover of the present invention.

[0041] Figure 4 This is a schematic diagram of the ventilation panel structure of the present invention.

[0042] Figure 5 This is a schematic diagram of the vibration isolation spring structure of the present invention.

[0043] Figure 6 This is a schematic diagram of the first fan mounting bracket structure of the present invention.

[0044] Figure 7 This is a schematic diagram of the second fan mounting bracket structure of the present invention.

[0045] Figure 8 This is a schematic diagram of the first electrical interface structure of the present invention.

[0046] Figure 9 This is a schematic diagram of the second electrical interface structure of the present invention.

[0047] Figure 10 This is a schematic diagram of the internal circuitry of the modular wind turbine assembly of the present invention.

[0048] Figure 11 This is a schematic diagram of the vibration isolation spring of the present invention, which is a straight leaf spring structure.

[0049] Figure 12 This is a schematic diagram of the vibration isolation spring structure of the present invention, which is a helical spring.

[0050] Figure 13 This is a schematic diagram of the large outlet ventilation panel structure of the present invention.

[0051] Figure 14 This is a schematic diagram of the outdoor rainproof and ventilated panel structure of the present invention.

[0052] Figure 15 Schematic diagram of vibration transmission in a single-degree-of-freedom system

[0053] Figure 16 Schematic diagram of vibration transmissibility of a single-degree-of-freedom system

[0054] Figure Labels

[0055] 1. Fan cover; 1-1. Fan module mounting hole; 1-2. Weight reduction groove; 1-3. Vibration isolation spring mounting post; 1-4. Ventilation plate mounting threaded hole; 1-5. Vibration isolation spring mounting hole; 1-6. First electrical interface mounting window; 1-7. Concave dovetail groove; 1-8. Second electrical interface wiring hole; 1-9. Second electrical interface wiring hole; 1-10. Protruding dovetail groove; 1-11. First electrical interface mounting window; 2. Vibration isolation spring; 2-1. Fixed mounting hole; 2-2. Vertical stiffness adjustment section; 2-3. Transition arc section; 2-4. Spring horizontal stiffness adjustment section; 3. Vibration isolation spring mounting screw; 4. First fan fixing Bracket; 4-1. First fan mounting through hole; 4-2. Second vibration isolation spring mounting hole; 5. Fan mounting screw; 6. Fan assembly mounting screw; 7. Fan ventilation plate; 7-1. Ventilation plate side positioning step; 7-2. Vibration isolation spring clamping boss; 7-3. Fan ventilation hole; 7-4. Ventilation plate fixing countersunk hole; 8. Fan; 9. Second fan mounting bracket; 9-1. Second fan mounting through hole; 9-2. Second vibration isolation spring mounting hole; 10. Vibration isolation damping pad; 11. Outwardly convex dovetail groove external baffle; 12. First electrical interface; 13. Second electrical interface; 14. Inwardly concave dovetail groove external baffle; 15 / 16. Power wire terminal. Detailed Implementation

[0056] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0057] As attached Figures 1-9 As shown, the technical solution of the present invention is specifically described as follows:

[0058] The accompanying drawings constitute a part of this invention and, together with the embodiments of this invention, are used to illustrate the implementation of the technical solutions of this invention, but are not intended to limit the scope of this invention.

[0059] Example 1

[0060] A modular fan unit that can effectively suppress the transmission of its own vibration to the outside world includes a fan cover 1, a fan 8, and a vibration isolation system;

[0061] The fan cover 1 is provided with modular interfaces for interconnection and modular electrical interfaces for internal connection. Specifically, in this embodiment, the fan cover 1 is a four-sided cylindrical structure with four outer sides; the four column edges are chamfered to form four side edges, thereby forming eight side edges; a modular first electrical interface 12 is provided on each of the two adjacent outer sides; a second electrical interface 13 is provided on the other two adjacent outer sides; a first modular interface and a second modular interface are respectively provided on the two edges of each outer side.

[0062] The fan 8 includes a fan housing, a fan motor, a motor shaft, and fan blades, with the fan motor, motor shaft, and fan blades fixed inside the fan housing. It also includes a fixing bracket. The fixing bracket connects the fan 8 and the fan cover 1; the fixing bracket includes a first fan fixing bracket 4 fixed to the lower end of the fan 8 and a second fan fixing bracket 9 fixed to the upper end of the fan 8; the fan cover 1 is fixed between the first fan fixing bracket 4 and the second fan fixing bracket 9. Preferably, the fan housing is fixedly connected to the first fan fixing bracket 4 and the second fan fixing bracket 9.

[0063] The vibration isolation system is connected to the fan 8 and the fan cover 1 via a fixed bracket. The vibration isolation system, the fan 8, and the fan cover 1 together constitute a vibrating body. The vibration isolation system includes vibration isolation springs 2 and vibration isolation damping pads 10.

[0064] In this specific embodiment, the spring mass system includes a vibration isolation spring 2, a fan 8, a first fan mounting bracket 4, a second fan mounting bracket 9, and also includes vibration isolation spring mounting screws 3.

[0065] Specifically, in this specific embodiment, there are a total of 8 vibration isolation springs 2, which are divided into groups of four. The first group of 4 springs are installed between the fan cover 1 and the fan 8 through the vibration isolation spring mounting posts 1-3 and the second fan fixing bracket 9, respectively. The second group of 4 springs are installed between the fan cover 1 and the fan 8 through the vibration isolation spring mounting posts 1-3 and the first fan fixing bracket 4, respectively.

[0066] The outer baffle is inserted into the four sides of the fan cover 1, thus being detachably mounted on the outside. The outer baffle is provided with insertion interfaces that engage with the first modular interface and the second modular interface. Optionally, the first modular interface and the second modular interface are respectively a snap-fit ​​interface and a slot interface that can be engaged; preferably, the first modular interface and the second modular interface are respectively a convex dovetail groove 1-10 and a concave dovetail groove 1-7; the corresponding outer baffle includes an convex dovetail groove outer baffle 14 and an convex dovetail groove outer baffle 11 that can be engaged with it.

[0067] Optionally, the lower and upper ends of the fan housing of the fan 8 are fixed to the first fan mounting bracket 4 and the second fan mounting bracket 9 via fasteners passing through the first fan mounting through hole 4-1 and the second fan mounting through hole 9-1, respectively, and are suspended on the inner wall of the fan cover 1 by vibration isolation springs 2. One end of the vibration isolation spring 2 is placed in the second vibration isolation spring mounting hole 9-2 of the second fan mounting bracket 9 or the first vibration isolation spring mounting hole 4-2 of the first fan mounting bracket 4, contacting the fan housing of the fan 8, and is fixed by fan mounting screws 5. The vibration isolation spring 2 protrudes from the through slots of the two fan mounting brackets, and the other end is fixed to the vibration isolation spring mounting post 1-3 on the inner side of the fan cover main frame by fan mounting screws 5, so that the fan 8, the vibration isolation spring 2, the first fan mounting bracket 4 and the second fan mounting bracket 9 are fixed together. The vibration of the fan 8 is transmitted to the vibration isolation spring 2 through the contact between its housing and the vibration isolation spring 2.

[0068] The vibration damping pad 10 is glued to the fan cover 1 on the side of the air outlet of the fan 8, and fixed by screws and pressed against the outer surface of the vibration damping pad 10; the convex dovetail groove outer baffle 11 and the concave dovetail groove outer baffle 14 are inserted into the corresponding fan cover 1 through the dovetail groove.

[0069] Two vibration isolation springs 2 form a group, each with one end fixed to the inner wall of the fan shroud 1. The other end of one vibration isolation spring 2 in each group is fixed to the first fan mounting bracket 4, and the other end of the other vibration isolation spring 2 is fixed to the second fan mounting bracket 9, forming a double-layer spring damping system. The vibration isolation spring groups located on the upper and lower layers of the first fan mounting bracket 4 and the second fan mounting bracket 9 form a double-layer spring damping system, thus forming a spring-mass system with two degrees of freedom in a plane.

[0070] The spring-mass system has the same natural frequency in both directions within the plane, and this frequency can be adjusted by the ratio of the spring stiffness to the mass of the fan and fixed support to meet vibration isolation requirements. The vibration isolation requirement is that the natural frequency of the spring-mass system be less than 1.414 times the frequency of the external vibration excitation load. At this point, the vibration transmissibility of the spring-mass system to the external load is always less than 1.

[0071] like Figure 15 As shown, the spring-mass system of the modular wind turbine unit can be equivalently represented as a single-degree-of-freedom system with mass m, stiffness k, and damping coefficient c in any of the X, Y, and Z directions; u i To excite displacement, u o In response to displacement. When subjected to vibration displacement excitation u i Afterwards, the spring-mass system will undergo forced vibration, and its differential equation of motion is:

[0072]

[0073] When only external vibration excitation u is considered i With response displacement u o When the amplitude is reached, the response displacement u is used. o With excitation displacement u i The vibration transmissivity of the single-degree-of-freedom system of the spring mass can be obtained by calculating the ratio of the two values:

[0074]

[0075] In the formula: β is the vibration transmissibility; ζ is the damping ratio; λ is the ratio of the excitation frequency to the natural frequency of the single-degree-of-freedom system.

[0076] As can be seen from the above formula, the vibration transmissibility of this single-degree-of-freedom system is only related to the damping ratio ζ of the spring-mass system and the ratio λ of the excitation frequency to the natural frequency of the spring-mass system. Figure 16 The figure shows the vibration transmissibility curves of a single-degree-of-freedom system with different damping ratios as λ changes. It can be seen from the figure that when... Regardless of the damping ratio, the ratio of the system's response vibration displacement to the excitation vibration displacement is always less than 1, meaning that when At this time, a single-degree-of-freedom system has a vibration reduction effect on external loads.

[0077] The present invention uses a spring-mass system composed of 8 vibration isolation springs 2, and the vibration transmission rate to external loads is always less than 1 when the modular fan unit is in operation.

[0078] The convex dovetail groove outer baffle 11 and the concave dovetail groove outer baffle 14 are detachable outer baffles. After removal, multiple modular fan units can be quickly assembled into an array, which can be one row or multiple rows. Each modular fan unit has two first electrical interfaces 12 and two second electrical interfaces 13. When multiple modular fan units are assembled and used, the first electrical interface 12 can supply power to another modular fan unit through the contact connection of the first electrical interface 12 and the second electrical interface 13, and power can be drawn from the previous modular fan unit through the second electrical interface 13. When the assembled vibration isolation fan array is not less than 2*2, any fan module except the one connected to the external power supply can be temporarily removed when the fan is working without affecting the normal operation of the other fans.

[0079] The bottom of the fan cover 1 has four fan module mounting holes 1-1, and each outer side has a weight reduction groove 1-2 and a reinforcing rib. Each of the four outer sides has dovetail grooves at both ends, including two convex dovetail grooves 1-10 and two concave dovetail grooves 1-7, located on two opposite outer surfaces. The inner side has four vibration isolation spring mounting posts 1-3. Each vibration isolation spring mounting post 1-3 has vibration isolation spring mounting holes 1-5 at both ends. The holes are generally circular, and each vibration isolation spring mounting hole 1-5 has a notch on its sidewall for the spring to pass through. The bottom of the vibration isolation spring mounting holes 1-5 has threaded holes 1-4 for mounting the vibration isolation spring 2 and the fan ventilation plate 7. On the sidewall with the convex dovetail grooves 1-10 are mounting windows 1-6 and 1-11 for the first electrical interface, and on the sidewall with the concave dovetail grooves are wiring holes 1-8 and 1-9.

[0080] The overall dimensions of the fan ventilation plate 7 are consistent with the outer contour of the fan shroud. The fan ventilation plate 7 has a positioning step on its inner side and a vibration-damping spring clamping boss in the middle of its side. The boss has countersunk through holes for mounting and fixing the fan ventilation plate 7. The fan ventilation plate 7 has fan ventilation holes in its center. These ventilation holes can be hexagonal arrays, circular arrays, or elongated holes in the form of louvers, etc. The outer contour of the fan ventilation holes must not exceed the outer contour of the fan mounting bracket. The duty cycle of the fan ventilation holes can be adjusted according to actual needs, including the size and spacing of the array holes.

[0081] Optionally, the vibration isolation spring 2 is an L-shaped spring strip, including a fixed mounting hole 2-1, a vertical stiffness adjustment section 2-2, a transition arc section 2-3, and a horizontal stiffness adjustment section 2-4. Two fixed mounting holes 2-1 are provided, located at both ends of the vibration isolation spring 2, and are integrally rolled. The vertical stiffness adjustment section 2-2, the transition arc section 2-3, and the horizontal stiffness adjustment section 2-4 are sequentially arranged between the two fixed mounting holes 2-1. The vertical stiffness adjustment section 2-2 and the horizontal stiffness adjustment section 2-4 are perpendicular to each other, and the stiffness of the spring can be changed by adjusting the lengths of these two sections. The transition arc section 2-3 connects the vertical stiffness adjustment section 2-2 and the horizontal stiffness adjustment section 2-4, and the stress concentration of the spring can be reduced by increasing the curvature of the arc section.

[0082] The following aspects are mainly considered when designing vibration isolation spring 2:

[0083] (1) The design of spring stiffness should take into account the vibration frequency of the motor itself and the mass of the fan. The frequency of the completed modular fan unit should be less than the vibration frequency of the fan itself. This is to ensure that the vibration transmission rate of the modular wind turbine to external loads is always less than 1.

[0084] (2) The design of the “L” type spring can provide greater stiffness in a limited space compared with ordinary helical springs, thus making the fan more stable;

[0085] (3) The stiffness of an L-shaped spring can be adjusted in both longitudinal and transverse directions by changing the length of the two arms;

[0086] (4) When the fan is working, it will generate a torque on its fixed structure. When the "L"-shaped springs in the four directions bear the torque, part of the force can be borne by the tensile deformation of the spring length, thereby reducing the stress concentration at the root of the spring.

[0087] The first fan mounting bracket 4 is a rectangular frame. The four corners of the frame are provided with first fan mounting through holes 4-1, and the four sides are provided with first vibration isolation spring mounting holes 4-2. The sidewalls of the vibration isolation spring mounting holes are provided with first through grooves pointing to the outside of the frame structure.

[0088] The second fan mounting bracket 9 is a rectangular frame. The four corners of the frame are provided with first fan mounting through holes 9-1, and the four sides are provided with four first vibration isolation spring mounting holes 9-2. The side wall of the vibration isolation spring mounting holes 9-2 has a second through groove, which points to the outside of the frame structure. The eccentricity of the through groove and the vibration isolation spring mounting holes 9-2 is opposite to the eccentricity of the first fan mounting bracket 4.

[0089] The first fan mounting bracket 4 and the second fan mounting bracket 9 are mirror images of each other and are the same size.

[0090] The vibration damping pad 10 is a rectangular frame made of soft materials such as silicone rubber, sponge, PMI foam, etc. The outer frame of the vibration damping pad 10, the first fan mounting bracket 4, and the second fan mounting bracket 9 has the same shape and the same size. The inner frame of the vibration damping pad 10 is not less than the inner frame diameter of the first fan mounting bracket 4 and the second fan mounting bracket 9, which are mirror images of each other and have the same size.

[0091] The first electrical interface 12 is a voltage output port, which can connect the power supply circuit of another vibration isolation fan module in contact with it to form a whole, including a circuit board that can operate at high temperatures, such as FR4. The circuit board is equipped with two compressible electrical contacts and a hot-swappable voltage regulator circuit.

[0092] The second electrical interface 13 is a voltage input port, including a circuit board that can operate at high temperatures, such as FR4, on which two electrical copper plates and a hot-swappable voltage regulator circuit are provided.

[0093] Power supply wire terminal 15, power supply wire terminal 16, first electrical interface, and second electrical interface are connected in parallel.

[0094] The power supply wire terminal 15 can be connected to an external power source; the power supply wire terminal 16 is connected to the fan to supply power to the fan.

[0095] When the wind turbine array is in use, the first electrical interface of the i-th wind turbine is connected to the second electrical interface of the (i+1)-th wind turbine, so that all wind turbines are connected in parallel. When any one of the wind turbines is connected to an external voltage, all wind turbines can work.

[0096] The concave dovetail groove outer baffle 14 and the convex dovetail groove outer baffle 11 are made of high-temperature resistant non-conductive material, preferably FR4 in this embodiment.

[0097] Example 2

[0098] A modular wind turbine assembly includes multiple vibration-isolated modular wind turbine devices as described above. These devices are assembled via modular interfaces. The modular interfaces include a first modular interface and a second modular interface that can be structurally interlocked. The assembly also includes a first electrical interface 12 and a second electrical interface 13 that enable circuit connection. Preferably, the first electrical interface 12 is a voltage output port with two retractable contacts, and the second electrical interface 13 is a voltage input port with two contact pads. When the first modular interface of one modular wind turbine device is plugged into the second modular interface of another, the retractable contacts and contact pads on the different modular wind turbine devices touch, connecting the circuit and forming an interconnected power supply mode between the multiple modular wind turbine devices, thus constituting the modular wind turbine assembly.

[0099] The installation process of this invention is as follows:

[0100] S1: Install one end of the four vibration isolation springs 2 on the side of the fan cover vibration isolation spring mounting column 1-3 near the air inlet, and position it with the vibration isolation spring mounting screw 3;

[0101] S2: Connect the first fan mounting bracket 4 and the fan 8 to the other end of the vibration isolation spring 2 in sequence, and fix them with the vibration isolation spring mounting screw 3 from the first step;

[0102] S3: Install the other 4 vibration isolation springs 2 on the side of the fan cover vibration isolation spring mounting column 1-3 near the air outlet, and fix them with vibration isolation spring mounting screws 3; install the second fan fixing bracket 9; the fan fixing screws 5 pass through the first fan fixing bracket 4, the fan 8 and the second fan fixing bracket 9 from one side of the first fan fixing bracket 4 in sequence, and bind these three together.

[0103] S4: Attach the vibration damping pad to the top perimeter of the air outlet side of the fan cover 1;

[0104] S5: Cover the fan ventilation plate 7 and fix the fan ventilation plate 7 and the 4 vibration isolation springs on the air outlet side to the fan cover 1 using the vibration isolation spring mounting screws 3;

[0105] S6: Insert both the convex dovetail groove outer baffle 11 and the concave dovetail groove outer baffle 14 into the four sides of the fan cover; installation complete;

[0106] S7: Connect the power supply to terminal 15 of the power supply wire of the modular fan unit to start the modular fan unit and enter the working state;

[0107] S8: Installation of modular wind turbine components:

[0108] Several modular wind turbines are assembled into a modular wind turbine assembly:

[0109] (A) Remove the external baffle 11 or the external baffle 14 of the dovetail groove corresponding to the assembly interface;

[0110] (B) The concave dovetail groove 1-7 of one modular fan unit is inserted into the convex dovetail groove 1-10 of another modular fan unit (or the convex dovetail groove 1-10 of one modular fan unit is inserted into the concave dovetail groove 1-7 of another modular fan unit), and so on, to form a modular fan assembly in structure.

[0111] (C) In sync with (B), the second electrical interface 13 of one modular wind turbine unit touches the first electrical interface 12 of another modular wind turbine unit (or, the first electrical interface 12 of one modular wind turbine unit is inserted into the second electrical interface 13 of another modular wind turbine unit); and so on, forming an internal power supply mode for the modular wind turbine components.

[0112] (D) Connect the power supply to terminal 15 of the first modular fan unit of the modular fan assembly; start the modular fan assembly to enter the working state.

[0113] In addition, in practical applications, there are usually alternative technical solutions that can achieve the same goal:

[0114] For example, the vibration isolation spring 2 can be optionally installed on the four edges of the four-sided cylindrical structure of the fan cover 1 or elsewhere; or the vibration isolation spring 2 can be replaced with a straight or other shaped leaf spring, such as... Figure 11 As shown; the vibration isolation spring 2 can also be replaced with a regular tension or compression coil spring, such as Figure 12 As shown.

[0115] Preferably, the vibration isolation springs 2 are installed at the four opposite corners of the four-sided cylindrical structure of the fan cover 1 and at the spring mounting columns 1-3.

[0116] In addition, the fan ventilation panel 7 can also be replaced with other structural forms; such as replacing it with Figure 13 As shown, the fan ventilation plate 7 can have a larger ventilation rate, or it can be replaced with... Figure 14 The fan ventilation panel 7 shown has a rain cover at the vent, which can be used outdoors and has a rainproof function.

[0117] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A modular fan unit, characterized in that, Includes a fan cover (1), a fan (8), and a vibration isolation system; The fan cover (1) is provided with a modular interface for structural interconnection and a modular electrical interface for power supply connection; The vibration isolation system connects the fan cover (1) and the fan (8) through a fixed bracket to reduce the transmission of vibration to the outside. The vibration isolation system includes a vibration isolation spring (2), which is an L-shaped spring band. The vibration isolation spring (2) includes two fixed mounting holes (2-1), a vertical stiffness adjustment section (2-2), a transition arc section (2-3), and a horizontal stiffness adjustment section (2-4). The vertical stiffness adjustment section (2-2), the transition arc section (2-3), and the horizontal stiffness adjustment section (2-4) are sequentially arranged between the two fixed mounting holes (2-1). The vertical stiffness adjustment section (2-2) and the horizontal stiffness adjustment section (2-4) are arranged perpendicular to each other. The stiffness of the spring can be changed by adjusting the length of the vertical stiffness adjustment section (2-2) and the horizontal stiffness adjustment section (2-4). The transition arc section (2-3) connects the vertical stiffness adjustment section (2-2) and the horizontal stiffness adjustment section (2-4). The stress concentration of the spring can be reduced by increasing the curvature of the transition arc section (2-3). The fan cover (1) includes a main frame of the fan cover. Each of the four inner sides of the main frame of the fan cover is provided with a vibration isolation spring mounting post (1-3). Each vibration isolation spring mounting post (1-3) has a vibration isolation spring mounting hole (1-5) at both ends. The vibration isolation spring mounting hole (1-5) has a notch on its side wall for the vibration isolation spring (2) to pass through.

2. The modular fan device according to claim 1, characterized in that, The fan cover (1) includes an external baffle and a fan ventilation plate (7).

3. The modular fan device according to claim 2, characterized in that, The main frame of the fan cover is a four-sided cylindrical structure with chamfered edges on four sides, forming four outer surfaces and four side edges. A modular first electrical interface (12) is provided on two adjacent outer surfaces, and a first modular interface is provided on the edge; a second electrical interface (13) is provided on the other two adjacent outer surfaces, and a second modular interface is provided on the edge.

4. The modular fan device according to claim 2, characterized in that, The external baffle matches the outer side of the main frame of the fan cover; the external baffle is provided with a first modular interface on both sides, which matches and plugs into the second modular interface on the outer side of the main frame, or is provided with a second modular interface which matches and plugs into the first modular interface on the outer side of the main frame.

5. The modular fan device according to claim 2, characterized in that, The fan ventilation plate (7) is attached to the upper part of the main frame of the fan cover, matches the shape of the main frame of the fan cover, and is fixedly connected to the second fan fixing bracket (9); a positioning step is provided on the inner side, and a fan ventilation hole is provided in the middle.

6. The modular fan device according to claim 1, characterized in that, The vibration isolation system includes 8 vibration isolation springs (2) and 1 vibration isolation damping pad (10). Each of the vibration isolation springs (2) has one end attached to the fan (8) and fixed to the fixed bracket, and the other end is fastened to the vibration isolation spring mounting column (1-3).

7. The modular fan unit according to any one of claims 3-6, characterized in that, The first modular interface is a convex dovetail groove (1-10), and the second modular interface is a concave dovetail groove (1-7); the first electrical interface (12) is a voltage output port with two telescopic contacts, and the second electrical interface (13) is a voltage input port with two contact pads.

8. A modular fan assembly comprising a plurality of modular fan devices as described in any one of claims 1-7, wherein the plurality of vibration-isolated modular fan devices are assembled together by modular interfaces on a fan cover (1); wherein the modular interfaces are a first modular interface and a second modular interface that can be structurally fastened together, and a first electrical interface (12) and a second electrical interface (13) that can be touched and connected to each other.

9. A method for installing the modular wind turbine assembly as described in claim 8: S1: Install 4 vibration isolation springs (2) on the side of the fan cover vibration isolation spring mounting column (1-3) near the air inlet, and position them with vibration isolation spring mounting screws (3); S2: Connect the first fan fixing bracket (4) and the fan (8) to the vibration isolation spring (2) in sequence, and fix them with the vibration isolation spring mounting screw (3) from the first step; S3: Install the other 4 vibration isolation springs (2) on the side of the fan cover vibration isolation spring mounting column (1-3) near the air outlet, and fix them with vibration isolation spring mounting screws (3); install the second fan fixing bracket (9); the fan fixing screws (5) pass through the first fan fixing bracket (4), the fan (8) and the second fan fixing bracket (9) from one side of the first fan fixing bracket (4) in sequence, and bind these three together; S4: Attach the vibration damping pad (10) to the top periphery of the air outlet side of the fan cover (1); S5: Install the fan ventilation plate (7) onto the fan cover (1) on the air outlet side of the fan (8) using the vibration isolation spring mounting screw (3); S6: Insert both the convex dovetail groove outer baffle (11) and the concave dovetail groove outer baffle (14) into the four sides of the fan cover (1); S7: Connect the power supply from the wiring terminal (15) of the modular fan unit; S8: Installation of modular wind turbine components: Multiple modular wind turbine units are assembled into a modular wind turbine assembly by combining and arraying them: (A) Remove the external baffle (11) or the external baffle (14) of the convex dovetail groove corresponding to the assembly interface. (B) A concave dovetail groove (1-7) of a modular fan unit is inserted into a convex dovetail groove (1-10) of another modular fan unit; or a convex dovetail groove (1-10) of a modular fan unit is inserted into a concave dovetail groove (1-7) of another modular fan unit; and so on, to form a structurally modular fan assembly. (C) In sync with (B), the second electrical interface (13) of one modular wind turbine unit touches the first electrical interface (12) of another modular wind turbine unit; or, the first electrical interface (12) of one modular wind turbine unit touches the second electrical interface (13) of another modular wind turbine unit; and so on, forming an internal power supply mode for the modular wind turbine components; (D) Connect the power supply from the wiring terminal (15) of the first modular fan unit of the modular fan assembly.

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