Fan housing and electrical equipment

Abstract

The application discloses a fan cover and electrical equipment, and belongs to the technical field of fans. The fan comprises a shell which defines a containing space for containing the fan, has oppositely arranged air inlets and air outlets, and comprises a plurality of shell enclosing walls which are detachably connected along the airflow direction, and at least one of the shell enclosing walls matches a plurality of thicknesses of the fan, wherein the thickness of the fan is a dimension along the airflow direction; and a noise reduction piece which is installed outside the shell and is arranged at least one of the air inlets and the air outlets of the shell. The structure reduces the production cost, shortens the production cycle, meets the diversified installation requirements, improves the universality and applicability of the fan, and reduces the overall noise level during the operation of the fan, thereby effectively improving the acoustic environment during the operation of the fan, and further improving the applicability and user experience of the fan in different application scenarios.

Description

Technical Field

[0001] This application belongs to the field of wind turbine technology, and in particular relates to a wind turbine sleeve and electrical equipment. Background Technology

[0002] In current wind turbine applications, different scenarios present significant differences in the requirements for wind turbine size, installation space, and noise reduction. Traditional wind turbines typically have a one-piece casing with fixed dimensions, making them unable to be flexibly adjusted according to the actual installation space and duct structure. When encountering installation requirements for wind turbines of varying thicknesses, it is often necessary to redesign and manufacture the entire wind turbine, which not only increases production costs but also extends the production cycle, failing to meet diverse needs.

[0003] Meanwhile, in existing cooling systems, fans are widely used as core heat dissipation components. They drive airflow to carry away the heat generated by the equipment, thereby achieving the purpose of heat dissipation. However, facing a variety of application scenarios, traditional fans can no longer meet the increasingly stringent noise requirements. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a fan sleeve and electrical equipment that comprehensively reduces the overall noise level during fan operation and effectively improves the acoustic environment during fan operation.

[0005] In a first aspect, this application provides a wind turbine sleeve, comprising: The housing defines a receiving space for accommodating a fan, has an air inlet and an air outlet arranged opposite to each other, and includes a plurality of housing enclosure walls detachably connected along the airflow direction, at least one of the housing enclosure walls being adapted to fans of various thicknesses, wherein the thickness of the fan is a dimension along the airflow direction; A noise reduction component is installed on the outside of the housing and is located at at least one of the air inlet and the air outlet of the housing.

[0006] According to the fan of this application, the configuration design of matching fans of various thicknesses with at least one outer casing wall allows the casing to be combined according to actual needs, eliminating the need to redesign and manufacture the entire fan casing, thereby reducing production costs, shortening the production cycle, and meeting diverse installation requirements, greatly improving the versatility and applicability of the fan. Combined with the inclusion of noise reduction components, the air at the inlet and / or outlet is guided and rectified, reducing mid-to-high frequency aerodynamic noise generated by factors such as eddies, turbulence, and pressure fluctuations, thereby lowering the overall noise level of the fan during operation.

[0007] According to one embodiment of this application, one side of the housing is open to form an operation port. The operation port is located on a different side of the housing from the air inlet and the air outlet. The operation port is used to push the fan into or remove it from the receiving space. The operation port is provided with a limiting structure for abutting the fan.

[0008] According to one embodiment of this application, a first elastic portion is provided on the side of the outer casing opposite to the operating port, and the first elastic portion is used to elastically press the fan against the limiting structure.

[0009] According to one embodiment of this application, the limiting structure is connected to the inner wall of the housing and protrudes inward, and the limiting structure has a guide ramp for guiding the fan inward.

[0010] According to one embodiment of this application, the housing includes a first cover and a second cover that are snapped together, the first cover having the air inlet and the second cover having the air outlet, at least one of the first cover and the second cover having a bent edge extending toward the other, the first cover and the second cover enclosing an accommodating space.

[0011] According to one embodiment of this application, the housing includes a first plate, a side frame, and a second plate connected in sequence, the first plate, the side frame, and the second plate forming an accommodating space, the first plate having the air inlet, and the second plate having the air outlet.

[0012] According to one embodiment of this application, the outer casing includes a third cover and a fourth cover that are snapped together. The third cover includes a front panel and a first enclosure connected to each edge of the front panel. The front panel has the air inlet. The fourth cover includes a rear panel and a second enclosure connected to each edge of the rear panel. The rear panel has the air outlet. A plurality of edges of the first enclosure are connected to a plurality of edges of the second enclosure in a one-to-one correspondence. The inner wall surfaces of the front panel and the rear panel facing the receiving space are adapted to abut against the fan, and the inner wall surfaces of the first enclosure and the second enclosure facing the receiving space are adapted to abut against the fan.

[0013] According to one embodiment of this application, at least one side of the first enclosure member and the second enclosure member is provided with a second elastic portion, the second elastic portion being used to elastically press against the fan in the direction of the accommodating space.

[0014] According to one embodiment of this application, the noise reduction component disposed at the air inlet includes a first guide ring, which surrounds the air inlet and forms a first guide channel with a gradually decreasing flow area along the airflow direction.

[0015] According to one embodiment of this application, the noise reduction component disposed at the air inlet includes a flow guide grille, which covers the air inlet.

[0016] According to one embodiment of this application, the noise reduction component disposed at the air inlet includes a first guide cone. The first guide cone is disposed in the middle of the air inlet, and the first guide cone is coaxially disposed with the air inlet. The projection range of the first guide cone on the outer shell along the airflow direction is within the range of the air inlet.

[0017] According to one embodiment of this application, the noise reduction component disposed at the air outlet includes a second guide ring, which surrounds the air outlet and forms a second guide channel with a gradually increasing flow area along the airflow direction.

[0018] According to one embodiment of this application, the noise reduction component provided at the air outlet includes a second guide cone. The second guide cone is located in the middle of the air outlet, and the second guide cone is coaxially arranged with the air outlet. The projection range of the second guide cone on the outer casing along the airflow direction is within the range of the air outlet.

[0019] According to one embodiment of this application, the noise reduction element is detachably connected to the housing.

[0020] According to one embodiment of this application, the housing and the noise reduction component are an integrated structure.

[0021] Secondly, this application provides an electrical device comprising: The fan sleeve as described in any of the above schemes; A fan is interference-fitted into the receiving space of the fan sleeve, used to drive gas to flow in from the air inlet and out from the air outlet, and each side of the fan abuts against the inner wall of the receiving space.

[0022] According to the electrical equipment of this application, the aforementioned fan housing allows for modular assembly based on actual needs, eliminating the need to redesign and manufacture the entire fan housing. This reduces production costs, shortens the production cycle, and meets diverse installation requirements, significantly improving the fan's versatility and applicability. The noise reduction components guide and rectify the airflow at the inlet and / or outlet, reducing mid-to-high frequency aerodynamic noise caused by factors such as eddies, turbulence, and pressure fluctuations. Combined with the fan's interference fit within the accommodating space, this effectively reduces low-frequency vibration noise generated by the fan's own excitation. The combined effect of these components comprehensively reduces the overall noise level during fan operation, effectively improving the acoustic environment and enhancing the fan's applicability and user experience in various application scenarios. Furthermore, the elimination of fasteners between the fan body and the housing reduces the number of components, enabling quick and convenient installation and disassembly. This lowers production costs and maintenance difficulty, thereby improving production efficiency and ease of use.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a cross-sectional view of the fan sleeve and the fan provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the fan sleeve and the fan provided in the embodiments of this application; Figure 3 This is one of the exploded structural views of the housing and noise reduction component provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the first cover provided in an embodiment of this application; Figure 5 This is the second exploded view of the structure of the housing and noise reduction component provided in the embodiments of this application; Figure 6 This is the third exploded view of the structure of the housing and noise reduction component provided in the embodiments of this application; Figure 7 This is the fourth exploded view of the structure of the housing and noise reduction component provided in the embodiments of this application; Figure 8 This is the fifth exploded view of the structure of the housing and noise reduction component provided in the embodiments of this application.

[0025] Figure label: Fan sleeve 10; The system comprises: outer casing 11, accommodating space 111, air inlet 112, air outlet 113, operating port 114, limiting structure 115, guide slope 1151, first elastic part 116, second elastic part 117, first cover 11a1, second cover 11a2, first plate 11b1, side frame 11b2, second plate 11b3, third cover 11c1, front plate 11c11, first enclosure member 11c12, fourth cover 11c2, rear plate 11c21, and second enclosure member 11c22. Fan 12; Noise reduction component 13, first guide ring 131, first guide channel 1311, guide grille 132, second guide ring 134, second guide channel 1341, second guide cone 135. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] This application discloses a fan sleeve 10.

[0028] The following is for reference. Figures 1-8 Describes the fan sleeve 10 according to an embodiment of this application.

[0029] In some embodiments, such as Figure 1 As shown, the fan sleeve 10 includes: a housing 11 and a noise reduction component 13.

[0030] The housing 11 defines a receiving space 111 for accommodating the fan 12. The housing 11 has an air inlet 112 and an air outlet 113 disposed opposite to each other. The housing 11 includes a plurality of housing enclosure walls that are detachably connected along the airflow direction. At least one housing enclosure wall is matched with the fan 12 of various thicknesses, wherein the thickness of the fan 12 is a dimension along the airflow direction. The noise reduction element 13 is installed on the outside of the housing 11 and is disposed at least at one of the air inlet 112 and the air outlet 113 of the housing 11.

[0031] It should be noted that the airflow direction referred to in this application refers to the direction from the air inlet to the air outlet. The air inlet of the fan sleeve 10 corresponds to the air inlet of the fan 12, and the air outlet of the fan sleeve 10 corresponds to the air outlet of the fan 12. When the air inlet and the air outlet are parallel, the airflow direction is the axis of the air inlet and the air outlet. When the fan 12 is installed in the accommodating space, the airflow direction is the same as the axis of the fan 12.

[0032] The outer casing 11 is a structure used to support the fan 12 and define the gas flow path. Its shape and size can be designed according to actual needs to accommodate the fan 12 and provide a suitable channel for the smooth flow of gas.

[0033] The air inlet 112 and the air outlet 113 are channels for gas to enter and exit. The air inlet 112 and the air outlet 113 are corresponding in spatial position. Specifically, the air inlet 112 and the air outlet 113 can be arranged opposite each other at both ends along the axial direction or opposite each other on both sides along the radial direction so that the gas can flow along a preset path.

[0034] The shape of the air inlet 112 can be, but is not limited to, a circle or a polygon, and the shape of the air outlet 113 can be, but is not limited to, a circle or a polygon. This application embodiment does not impose any restrictions on this.

[0035] Multiple outer shell enclosures are sequentially connected along the airflow direction of the fan 12 to form the outer shell 11. The outer shell enclosures can be detachably connected by means of snap-fit, magnetic attraction, threaded connection or pin connection, etc. This application embodiment does not limit this.

[0036] "Multiple" here means two or more.

[0037] For example, in some embodiments, such as Figure 3 As shown, the outer shell 11 is composed of two outer shell enclosure walls.

[0038] For example, in other embodiments, such as Figure 5 As shown, the outer shell 11 is composed of three outer shell enclosure walls.

[0039] The modular housing 11, composed of multiple outer shell enclosures, can be freely combined according to the air duct structure and installation space, making it suitable for various applications. For example, to meet the installation requirements of fans 12 of different thicknesses, the target fan 12 can be adapted by combining outer shell enclosures of different thicknesses.

[0040] In some embodiments, each of the multiple housing enclosure walls used to form the housing 11 may have various types with different thicknesses.

[0041] In other embodiments, among the multiple housing enclosures used to form the housing 11, some housing enclosures have various types with different thicknesses, while others have a fixed type.

[0042] In practical implementation, when faced with installation requirements for fans 12 of varying thicknesses, users can select different numbers of outer casing walls, or combine different thickness models of the same outer casing wall to adjust the overall thickness of the outer casing 11, thus adapting it to fans 12 of different sizes. For example, in installation scenarios with limited space, thinner outer casing walls can be selected for assembly; while in cases requiring higher fan performance and larger duct space, thicker outer casing walls can be selected for combination, or the number of outer casing walls can be further increased along the airflow direction to ensure smooth installation and normal operation of the fan.

[0043] The outer casing 11 may be made of plastic material, such as ABS (Acrylonitrile Butadiene Styrene), PP (polypropylene), or PVC (Polyvinyl chloride), etc., and this application embodiment does not limit this.

[0044] The noise reduction component 13 is an auxiliary component used to reduce the noise of gas flow. The noise reduction component 13 is not placed in the receiving space 111, but is connected to the outer wall of the housing 11 and protrudes outward, so that the fan 12 does not need to reserve space to avoid the noise reduction component 13.

[0045] In this embodiment, such as Figure 1 , Figure 3 and Figures 5-8 As shown, noise reduction components 13 are arranged at both the air inlet 112 and the air outlet 113 of the outer casing 11.

[0046] In some other embodiments, the housing 11 has a noise reduction element 13 arranged only at the air inlet 112.

[0047] In some other embodiments, the housing 11 has a noise reduction element 13 arranged only at the air outlet 113.

[0048] The noise reduction component 13 may include, but is not limited to, sound-absorbing material components, sound-absorbing structural components, and flow-guiding noise reduction components 13. Among them, the sound-absorbing material components may include, but are not limited to, sound-absorbing cotton or polyurethane foam, the sound-absorbing structural components may include, but are not limited to, honeycomb silencers or microporous plate silencers, and the flow-guiding noise reduction components 13 may include, but are not limited to, covers with arc-shaped flow-guiding surfaces, grilles, louvers, or gradually narrowing / expanding rings, etc., and the embodiments of this application do not limit this.

[0049] It is understandable that the sudden expansion and contraction of gas at the inlet and outlet of the fan can also cause noise. Excessive noise not only affects the working environment but may also harm the health of operators, and it also limits the application of the fan in some noise-sensitive situations. Since the fan sleeve 10 described in this application embodiment has noise reduction components 13 arranged at the inlet 112 and / or outlet 113, which can directly act on the incoming and outgoing airflow, different structures and materials of the noise reduction components 13 can absorb, reflect or interfere with noise waves, thereby reducing the propagation and radiation of aerodynamic noise, significantly reducing the noise level during operation, and improving the noise reduction performance of the fan sleeve 10.

[0050] The fan sleeve 10 provided in this application embodiment, through the configuration design of at least one outer shell enclosure wall matching fans of various thicknesses, allows the outer shell 11 to be combined according to actual needs, eliminating the need to redesign and manufacture the entire fan sleeve 10, thereby reducing production costs, shortening the production cycle, and meeting diverse installation requirements, greatly improving the versatility and applicability of the fan sleeve 10. Combined with the noise reduction component 13, it achieves airflow guidance and rectification at the air inlet 112 and / or air outlet 113, reducing mid-to-high frequency aerodynamic noise generated by factors such as eddies, turbulence, and pressure fluctuations, thereby reducing the overall noise level of the fan 12 during operation.

[0051] In some embodiments, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 As shown, one side of the outer casing 11 is open to form an operation port 114. The operation port 114 is located on a different side of the outer casing 11 from the air inlet 112 and the air outlet 113. The operation port 114 is used to push the fan 12 into or out of the receiving space 111. A limiting structure 115 for abutting the fan 12 is provided at the operation port 114.

[0052] In some embodiments, the limiting structure 115 may be a stop, rib, or the like extending inward from the edge of the operating port 114.

[0053] In other embodiments, the limiting structure 115 may also be an elastic buckle provided on both sides of the operating port 114. After the fan 12 is pushed in, the buckle can automatically pop up and abut against the slot on the side of the fan 12.

[0054] In some other embodiments, the limiting structure 115 can also be a magnet, which can achieve limiting and contact through magnetic attraction.

[0055] In some other embodiments, the limiting structure 115 may also be a cover plate, which is closable and installed at the operating port 114. After the cover plate is closed, it abuts against the end face of the fan 12.

[0056] The operating port 114 provides an operating channel for the subsequent installation and removal of the fan 12. The independent operating channel makes the pushing and pulling of the fan 12 more convenient, and the installation and removal can be completed without the need for tools, which is especially suitable for confined spaces or batch assembly scenarios. The layout of the operating port 114, air inlet 112 and air outlet 113 on opposite sides avoids obstruction of the gas flow path, so that the heat dissipation efficiency is not affected.

[0057] By setting a limiting structure 115 at the operating port 114, the fixing effect of the fan 12 is strengthened, reducing the loosening caused by vibration of the fan 12 towards the operating port 114 during operation. The abutment design improves the reliability of the limiting structure, retains the flexibility during disassembly, and avoids the complexity of the fan sleeve 10 structure caused by additional fixing components. The limiting structure 115 compensates for the potential stability problems caused by the operating port 114, ensuring that the vibration control effect of the fan sleeve 10 is not affected during high-power operation.

[0058] In some embodiments, such as Figures 3-6 and Figure 8 As shown, a first elastic part 116 is provided on the side of the outer casing 11 opposite to the operation port 114. The first elastic part 116 is used to elastically press the fan 12 against the limiting structure 115.

[0059] The first elastic part 116 may include, but is not limited to, a spring, an elastic pad, or an elastic sleeve, etc., and the embodiments of this application do not limit it.

[0060] In this embodiment, such as Figures 3-6 and Figure 8 As shown, the first elastic part 116 is an elastic member disposed on the outer shell 11 on the side opposite to the operation port 114. Its core function is to generate a continuous force through its own elastic deformation to press the fan 12 toward the limiting structure 115, so that the fan 12 and the limiting structure 115 maintain a stable contact state. The limiting structure 115 at the operation port 114 provides a blocking force, and the first elastic part 116 provides a thrust. The two work together to achieve the clamping and pressing of the fan 12.

[0061] By providing the first elastic part 116, the problem of gaps between the fan 12 and the limiting structure 115 caused by manufacturing tolerances, assembly errors, or long-term vibration is solved. Even if there are dimensional deviations in the fan 12 or the outer casing 11, the deformation of the first elastic part 116 can automatically compensate for the gap, ensuring that the two always maintain a tight fit and reducing vibration noise caused by loosening. Furthermore, when the fan 12 vibrates during operation, the first elastic part 116 can absorb some of the vibration energy through its own deformation, reducing the transmission of vibration to the outer casing 11 and further reducing low-frequency vibration noise.

[0062] In some embodiments, such as Figure 4and Figure 8 As shown, the limiting structure 115 is connected to the inner wall of the outer shell 11 and protrudes inward. The limiting structure 115 has a guide slope 1151 for guiding the fan 12 to be pushed in.

[0063] The limiting structure 115 may be, but is not limited to, a block protrusion, a rib protrusion extending along the pushing direction of the fan 12, or an annular protrusion extending along the circumferential edge of the operating port 114, etc. The embodiments of this application do not limit this.

[0064] In actual implementation, such as Figure 4 and Figure 8 As shown, the guide ramp 1151 is a functional surface on the limiting structure 115. The guide ramp 1151 slopes from the air inlet 112 to the air outlet 113 in a direction away from the operating port 114. When the fan 12 is pushed in through the operating port 114, the guide ramp 1151 guides the movement trajectory of the fan 12. When there is a slight deviation in the position of the fan 12 being pushed in, the guide ramp 1151 will generate a lateral force to automatically correct the deviation, so that the fan 12 can smoothly enter the receiving space 111 along the preset path, thereby reducing the probability of jamming during the pushing process.

[0065] The aforementioned guide ramp 1151 provides clear guidance for pushing the fan 12 in. In mass production or manual installation scenarios, it enables operators to more easily and quickly install the fan 12 into the correct position, reducing trial and error and adjustment time during the installation process and greatly improving installation efficiency.

[0066] When the housing 11 has an operation port 114, the housing 11 can be in at least one of the following structural forms: Firstly, such as Figures 2-4 and Figure 8 As shown, the outer casing 11 includes a first cover 11a1 and a second cover 11a2 that are fastened together. The first cover 11a1 has an air inlet 112 and the second cover 11a2 has an air outlet 113. At least one of the first cover 11a1 and the second cover 11a2 has a bent edge extending toward the other. The first cover 11a1 and the second cover 11a2 enclose a receiving space.

[0067] In this embodiment, such as Figures 2-4 and Figure 8 As shown, the first cover 11a1 and the second cover 11a2 can be detachably fastened together by means of snap-fit, threaded connection or pin connection. The first cover 11a1 and the second cover 11a2 respectively perform the functions of air inlet and air outlet. After combination, they form a complete internal accommodating space 111. The operation port 114 can be located on the joint side of the two covers.

[0068] The design of the first cover 11a1 and the second cover 11a2 makes the disassembly and assembly of the outer casing 11 very easy, requiring no complicated tools or operations, thus greatly shortening maintenance time. The shape of the first cover 11a1 and the second cover 11a2, as well as the position and size of the air inlet 112 and the air outlet 113, can be flexibly designed according to different fan sizes and functional requirements, facilitating customized design of the fan sleeve 10.

[0069] Secondly, such as Figure 5 As shown, the outer casing 11 includes a first plate 11b1, a side frame 11b2, and a second plate 11b3 connected in sequence. The first plate 11b1, the side frame 11b2, and the second plate 11b3 enclose an accommodating space. The first plate 11b1 has an air inlet 112, and the second plate 11b3 has an air outlet 113.

[0070] In this embodiment, such as Figure 5 As shown, the first plate 11b1 and the second plate 11b3, which are arranged opposite to each other and spaced apart, serve as the carriers of the air inlet 112 and the air outlet 113, respectively. The side frame 11b2 connects the first plate 11b1 and the second plate 11b3 to form a receiving space 111. The side frame 11b2 can be detachably connected to the first plate 11b1 and the second plate 11b3 by means of snap-fit, threaded connection or pin connection. One side of the side frame 11b2 is open so that the open side of the side frame 11b2, the first plate 11b1 and the second plate 11b3 enclose the operation port 114.

[0071] The arrangement of the first plate 11b1, side frame 11b2, and second plate 11b3 facilitates the disassembly of the outer casing 11 into multiple modules for manufacturing and transportation, reducing production costs and transportation difficulties. Simultaneously, it allows for flexible assembly on-site according to actual conditions, improving installation convenience. Furthermore, if it is necessary to upgrade the performance of the fan sleeve 10 or change the position and size of the air inlet 112 and air outlet 113, only the corresponding plate or side frame 11b2 needs to be replaced, eliminating the need to redesign and manufacture the entire outer casing 11, thus reducing modification costs.

[0072] In some embodiments, such as Figure 7As shown, the outer casing 11 includes a third cover 11c1 and a fourth cover 11c2 that are fastened together. The third cover 11c1 includes a front plate 11c11 and a first baffle 11c12 connected to each edge of the front plate 11c11. The front plate 11c11 has an air inlet 112. The fourth cover 11c2 includes a rear plate 11c21 and a second baffle 11c22 connected to each edge of the rear plate 11c21. The rear plate 11c21 has an air outlet 113. Multiple edges of the first baffle 11c12 are connected to multiple edges of the second baffle 11c12 in a corresponding manner. The inner wall surfaces of the front plate 11c11 and the rear plate 11c21 facing the receiving space 111 are adapted to abut against the fan 12, and the inner wall surfaces of the first baffle 11c12 and the second baffle 11c22 facing the receiving space 111 are adapted to abut against the fan 12.

[0073] In this embodiment, both the third cover 11c1 and the fourth cover 11c2 are cover structures with one side open. The open sides of the third cover 11c1 and the fourth cover 11c2 are fastened together by snap-fit, threaded connection or pin connection to form a closed receiving space 111, providing an installation environment for the fan 12. Among them, the front plate 11c11 is the main planar structure of the third cover 11c1. The front plate 11c11 can form an air inlet 112, which serves as a channel for gas to flow into the fan sleeve 10. The first enclosure member 11c12 is U-shaped and connected to each edge of the front plate 11c11, which serves as a lateral enclosure and a fastening function with the fourth cover 11c2. The first enclosure member 11c12 and the front plate 11c11 together constitute the three-dimensional structure of the third cover 11c1. The rear panel 11c21 corresponds to the front panel 11c11 and is the main planar structure of the fourth cover 11c2. The rear panel 11c21 can form an air outlet 113, serving as a channel for gas to flow out of the fan sleeve 10. The second enclosure member 11c22 is U-shaped and connected to each edge of the rear panel 11c21. The second enclosure member 11c22 and each edge of the first enclosure member 11c12 are fitted together to achieve a fastening, and participate in the lateral enclosure of the receiving space 111. The second enclosure member 11c22 and the rear panel 11c21 together constitute the three-dimensional structure of the fourth cover 11c2. A part of the fan 12 is first embedded into one of the third cover 11c1 and the fourth cover 11c2. After confirming that the embedding is in place, the other part of the fan 12 is embedded into the other cover, and finally the third cover 11c1 and the fourth cover 11c2 are connected to form a complete outer shell 11.

[0074] The fan 12 abuts against the inner wall surfaces of the front plate 11c11 and the rear plate 11c21 facing the receiving space 111, achieving axial positioning and fixation; simultaneously, it abuts against the inner wall surfaces of the first enclosure 11c12 and the second enclosure 11c22 facing the receiving space 111, achieving circumferential positioning and fixation. This all-around contact ensures a tight fit between the fan 12 and the outer casing 11.

[0075] The aforementioned third cover 11c1 and fourth cover 11c2 facilitate the easy disassembly and assembly of the outer casing 11, greatly simplifying the installation, maintenance, and replacement of the fan 12. The combined structural design of the third cover 11c1 (including the front plate 11c11 and the first enclosure 11c12) and the fourth cover 11c2 (including the rear plate 11c21 and the second enclosure 11c22) enhances the overall integrity and sealing of the outer casing 11, reducing the entry of dust and impurities into the accommodating space 111 and protecting the fan 12. Since the fan 12 abuts against the inner walls of the front plate 11c11, the rear plate 11c21, and the two enclosures, omnidirectional positioning and fixation are achieved, effectively suppressing vibration. Working in conjunction with the noise reduction component 13, this further reduces the overall noise level.

[0076] In some embodiments, such as Figure 7 As shown, at least one side of the first enclosure member 11c12 and the second enclosure member 11c22 is provided with a second elastic part 117, which is used to elastically press the fan 12 in the direction of the receiving space 111.

[0077] The second elastic part 117 may include, but is not limited to, a spring, an elastic pad, or an elastic sleeve, etc., and the embodiments of this application do not limit it.

[0078] In this embodiment, a second elastic portion 117 is provided on one or more sides of the first enclosure member 11c12 and the second enclosure member 11c22.

[0079] In other embodiments, the second elastic portion 117 is provided only on one or more sides of the first enclosure member 11c12.

[0080] In some other embodiments, the second elastic portion 117 is provided only on one or more sides of the second enclosure member 11c22.

[0081] By providing the second elastic part 117, the problem of gaps between the fan 12 and the outer casing 11 caused by manufacturing tolerances, assembly errors, or long-term vibration is solved. Even if there are dimensional deviations in the fan 12 or the outer casing 11, the deformation of the second elastic part 117 can automatically compensate for the gap, ensuring that the two always maintain a tight fit and reducing vibration noise caused by loosening. Furthermore, when the fan 12 vibrates during operation, the second elastic part 117 can absorb some of the vibration energy through its own deformation, reducing the transmission of vibration to the outer casing 11 and further reducing low-frequency vibration noise.

[0082] The noise reduction component 13 can be at least one of the following structural forms: Firstly, such as Figure 1 , Figure 3 and Figures 5-7As shown, the noise reduction component 13 located at the air inlet 112 includes a first guide ring 131. The first guide ring 131 surrounds the air inlet 112 and forms a first guide channel 1311 with a flow area that gradually decreases along the airflow direction.

[0083] The first guide ring 131 can be adapted to the shape of the air inlet 112, which can be circular or polygonal, etc. This application embodiment does not limit this.

[0084] Specifically, such as Figure 1 , Figure 3 and Figures 5-7 As shown, the first guide ring 131 can guide the incoming air to enter the fan sleeve 10 as perpendicular to the air inlet 112 as possible by forming a first guide channel 1311 that gradually narrows along the gas flow direction. This reduces the turbulent vortex formed by the separation of the blade surface fluid from the wall due to crossflow and other induced flow, thereby reducing blade dipole and turbulent quadrupole noise.

[0085] Secondly, such as Figure 8 As shown, the noise reduction component 13 located at the air inlet 112 includes a flow guide grille 132, which covers the air inlet 112.

[0086] The flow guide grille 132 can be a mesh structure or a honeycomb structure, and this application embodiment does not limit it.

[0087] Specifically, such as Figure 8 As shown, the flow guide grille 132 can break down large-scale vortex structures in the incoming airflow into small-scale vortex structures, thereby reducing the turbulence of the incoming flow and significantly reducing the risk of large-scale vortex structures acting on the blades and disrupting the fluid stability of the blade boundary layer, thus achieving a noise reduction effect at the air inlet 112.

[0088] Third, the noise reduction component 13 located at the air inlet 112 includes a first guide cone. The first guide cone is located in the middle of the air inlet 112. The first guide cone is coaxially arranged with the air inlet 112, and the projection range of the first guide cone on the outer shell 11 along the airflow direction is within the range of the air inlet 112.

[0089] The first guide cone can be a cone or other structure with conical features. The first guide cone can be connected to the outer shell 11 through multiple connecting beams in the circumferential direction, where multiple beams mean two or more beams.

[0090] Specifically, the tip of the first guide cone can be away from the air inlet 112, and the bottom of the cone can face the air inlet 112. The first guide cone can divert the airflow in the central area to the surrounding areas, reduce the possible airflow stagnation area in the center of the air inlet 112, and effectively alleviate the sudden expansion or contraction at the air inlet 112 by changing the pressure distribution of the airflow, reduce the pressure fluctuation at the air inlet 112, and thus reduce the noise generated at the air inlet 112.

[0091] Fourth, such as Figure 8 As shown, the noise reduction component 13 located at the air outlet 113 includes a second guide ring 134. The second guide ring 134 surrounds the air outlet 113 and forms a second guide channel 1341 with a gradually increasing flow area along the airflow direction.

[0092] The second guide ring 134 can be adapted to the shape of the air outlet 113, and can be designed as a circle or a polygon, etc. This application embodiment does not limit this.

[0093] Specifically, such as Figure 8 As shown, the second guide ring 134 can weaken the generation intensity of periodic vortices in the blade wake region of the fan 12 by forming a second guide channel 1341 that gradually expands along the gas flow direction, thereby significantly reducing broadband noise caused by vortex shedding.

[0094] Fifth, such as Figure 1 , Figure 3 and Figures 5-7 As shown, the noise reduction component 13 provided at the air outlet 113 includes a second guide cone 135. The second guide cone 135 is located in the middle of the air outlet 113. The second guide cone 135 is coaxially arranged with the air outlet 113, and the projection range of the second guide cone 135 on the housing 11 along the airflow direction is within the range of the air outlet 113.

[0095] The second guide cone 135 can be a cone or other structure with conical features. The second guide cone 135 can be connected to the outer shell 11 through multiple connecting beams in the circumferential direction, where multiple beams mean two or more beams.

[0096] Specifically, the tip of the second guide cone 135 can be away from the air outlet 113, and the bottom of the cone can face the air outlet 113. By changing the pressure distribution of the airflow, the second guide cone 135 can effectively alleviate the sudden expansion or contraction at the air outlet 113, reduce the pressure fluctuation at the air outlet 113, and thus reduce the noise generated at the air outlet 113.

[0097] In summary, various noise reduction components 13 can be arbitrarily combined with the air inlet side and / or air outlet side of the housing 11. The air inlet side noise reduction component 13 can improve the incoming air quality of the fan sleeve 10 and reduce the noise of the fan 12, while the air outlet side noise reduction component 13 can rectify the airflow at the air outlet 113 and reduce the outlet noise.

[0098] It should be noted that when the installation space of the fan sleeve 10 on the electrical equipment is limited, for example, if the fan sleeve 10 may interfere with other structural components of the electrical equipment, the construction of the air inlet side and / or air outlet side of the fan sleeve 10 can be adaptively changed to meet the installation space constraints while achieving fixation and noise reduction. Specifically, if the installation of the first guide ring 131 at the air inlet 112 would cause interference between the fan sleeve 10 and other components, the structure of the guide grille 132 or the first guide cone can be replaced. Alternatively, the noise reduction component 13 can be installed only at the air outlet 113 instead of at the air inlet 112.

[0099] The noise reduction component 13 and the housing 11 can be connected in at least one of the following ways: Firstly, such as Figure 6 As shown, the noise reduction component 13 is detachably connected to the housing 11.

[0100] The connection method between the noise reduction component 13 and the housing 11 may include, but is not limited to, snap-fit, threaded connection, hinge connection, magnetic connection or pin connection, etc., and the embodiments of this application do not limit this.

[0101] For example, in some embodiments, such as Figure 6 As shown, the noise reduction component 13 is detachably connected to the housing 11 by bolts.

[0102] With the aforementioned structural design that allows the noise reduction component 13 to be detachably connected to the outer casing 11, on the one hand, when the noise reduction component 13 is damaged due to long-term use or its noise reduction effect decreases, it can be easily removed from the outer casing 11 for replacement without replacing the entire fan sleeve 10, thus reducing maintenance costs. Simultaneously, during regular maintenance of the fan sleeve 10, the noise reduction component 13 can also be easily disassembled for cleaning and inspection. On the other hand, depending on different working environments and noise reduction requirements, different types of noise reduction components 13 can be selected for installation. For example, in situations with high noise requirements, a more effective noise reduction component 13 such as a flow guide grille 132 or a silencer can be installed; in situations with low noise requirements, a simpler and lower-cost noise reduction component 13 can be selected. This flexibility allows the fan sleeve 10 to better adapt to various application scenarios. Furthermore, the detachable noise reduction component 13 can be packaged and transported separately from the outer casing 11, reducing space occupation during transportation and lowering transportation costs. At the installation site, the outer casing 11 can be installed first, followed by the noise reduction component 13 as needed, improving installation efficiency.

[0103] Secondly, such as Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the outer shell 11 and the noise reduction component 13 are an integrated structure.

[0104] The outer shell 11 and the noise reduction component 13 can be integrated through processes such as injection molding, adsorption molding or compression molding, and this application embodiment does not limit this.

[0105] The integrated design of the outer shell 11 and the noise reduction component 13 offers several advantages. First, it eliminates gaps between the shell 11 and the noise reduction component 13, reducing stress concentration points and improving the overall strength and stability of the structure. During operation, it better withstands airflow impacts and vibrations, reducing the risk of the noise reduction component 13 loosening or falling off and extending the service life of the fan sleeve 10. Second, the integrated design allows for more precise control of the shape and position of the noise reduction component 13, ensuring smoother airflow between it and the shell 11 and reducing airflow resistance losses. Furthermore, the integrated structure better prevents eddies and turbulence at the connection points, further reducing noise. Finally, in mass production, the integrated structure reduces the number of parts and assembly steps, lowering production costs. It also reduces potential quality problems caused by connecting components, improving product yield.

[0106] This application also discloses an electrical device.

[0107] In some embodiments, the electrical equipment includes: a fan and a fan sleeve 10 as described in any of the above embodiments. The fan 12 is interference-fitted into the receiving space 111 of the fan sleeve 10. The fan 12 is used to drive gas to flow in from the air inlet 112 and out from the air outlet 113, and each side of the fan 12 abuts against the inner wall of the receiving space 111.

[0108] It should be noted that the fan 12 is used to provide air cooling for the power devices in the electrical equipment. The electrical equipment can be, but is not limited to, inverters, converters, or combiner boxes, etc. This application embodiment does not limit this.

[0109] The fan 12 is a core component that drives gas flow. It is fixed in the housing space 111 by interference fit. The external placement of the noise reduction component 13 provides structural support for the fan 12 to be directly matched with the side wall of the housing space 111.

[0110] Interference mounting means that the fan 12 is fixed by the dimensional interference between the fan 12 and the receiving space 111. For example, the outer diameter of the fan 12 is slightly larger than the inner diameter of the receiving space 111, and the rigidity of the fan 12 is greater than the rigidity of the outer shell 11. During installation, external force is used to force the outer shell 11 to deform and press the fan 12 in, so that each side of the fan 12 is in close contact with the inner wall of the receiving space 111.

[0111] For example, such as Figure 1 and Figure 2 As shown, the outer shell 11 is a regular hollow cuboid structure, and the fan 12 is also a cuboid structure. Thus, the six sides of the fan 12 abut against the corresponding six sides of the outer shell 11.

[0112] The fan 12 may be, but is not limited to, axial flow, mixed flow or centrifugal type, and the embodiments of this application do not limit it.

[0113] It is understandable that in the operation of existing fans, due to the gap between the fan 12 and the fan sleeve 10, turbulence and vibration are generated during gas flow, resulting in significant noise. Because the electrical equipment described in this embodiment uses an interference fit design between the fan 12 and the housing 11, the fan 12 can be inserted into the receiving space 111 for close contact and limitation. On the one hand, this ensures a tight connection between the fan 12 and the housing 11, reducing the vibration amplification effect caused by the gap, lowering low-frequency vibration noise, and further reducing the overall noise level. On the other hand, it eliminates the need for additional fasteners between the fan 12 and the housing 11, simplifying the structure of the fan sleeve 10, reducing the number of parts used, and also enabling quick installation and disassembly of the fan 12 and the housing 11, improving assembly efficiency.

[0114] The electrical equipment provided in this application embodiment, through the aforementioned fan sleeve 10, allows the housing 11 to be combined according to actual needs, eliminating the need to redesign and manufacture the entire fan sleeve 10. This reduces production costs, shortens the production cycle, and meets diverse installation requirements, significantly improving the versatility and applicability of the fan sleeve 10. The noise reduction component guides and rectifies the airflow at the inlet 112 and / or outlet 113, reducing mid-to-high frequency aerodynamic noise caused by factors such as eddies, turbulence, and pressure fluctuations. Combined with the structural design of the fan 12 being interference-fitted into the accommodating space 111, it effectively reduces low-frequency vibration noise caused by the fan sleeve 10's own excitation. The combined effect of these two components comprehensively reduces the overall noise level of the fan 12 during operation, effectively improving the acoustic environment of the fan 12 and enhancing its applicability and user experience in different application scenarios. Furthermore, the elimination of the need for fasteners between the fan 12 and the housing 11 reduces the number of components used, enabling quick and convenient installation and disassembly, thereby reducing production costs and maintenance difficulty, and ultimately improving production efficiency and ease of use.

[0115] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0116] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0117] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0118] In the description of this application, "multiple" means two or more.

[0119] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0120] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0121] Other configurations of the embodiments of this application, such as ... and ..., and operations, are known to those skilled in the art and will not be described in detail here.

[0122] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0123] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A fan sleeve, characterized in that, include: The housing defines a receiving space for accommodating a fan, has an air inlet and an air outlet arranged opposite to each other, and includes a plurality of housing enclosure walls detachably connected along the airflow direction, at least one of the housing enclosure walls being adapted to fans of various thicknesses, wherein the thickness of the fan is a dimension along the airflow direction; A noise reduction component is installed on the outside of the housing and is located at at least one of the air inlet and the air outlet of the housing.

2. The fan sleeve according to claim 1, characterized in that, One side of the housing is open to form an operation port. The operation port is located on a different side of the housing from the air inlet and the air outlet. The operation port is used to push the fan into or remove it from the receiving space. The operation port is provided with a limiting structure for abutting the fan.

3. The fan sleeve according to claim 2, characterized in that, A first elastic part is provided on the side of the outer casing opposite to the operating port. The first elastic part is used to elastically press the fan against the limiting structure.

4. The fan sleeve according to claim 2, characterized in that, The limiting structure is connected to the inner wall of the outer shell and protrudes inward. The limiting structure has a guide slope for guiding the fan inward.

5. The fan sleeve according to claim 2, characterized in that, The outer casing includes a first cover and a second cover that are snapped together, the first cover having the air inlet and the second cover having the air outlet, at least one of the first cover and the second cover having a bent edge extending toward the other, the first cover and the second cover enclosing an accommodating space; or, The outer casing includes a first plate, a side frame, and a second plate connected in sequence. The first plate, the side frame, and the second plate enclose a receiving space. The first plate has the air inlet, and the second plate has the air outlet.

6. The fan sleeve according to claim 1, characterized in that, The outer casing includes a third cover and a fourth cover that are fastened together. The third cover includes a front panel and a first enclosure connected to each edge of the front panel. The front panel has the air inlet. The fourth cover includes a rear panel and a second enclosure connected to each edge of the rear panel. The rear panel has the air outlet. Multiple edges of the first enclosure are connected to multiple edges of the second enclosure in a one-to-one correspondence. The inner wall surfaces of the front panel and the rear panel facing the receiving space are adapted to abut against the fan, and the inner wall surfaces of the first enclosure and the second enclosure facing the receiving space are adapted to abut against the fan.

7. The fan sleeve according to claim 6, characterized in that, The first enclosure member and the second enclosure member are provided with a second elastic portion on at least one side, the second elastic portion being used to elastically press against the fan in the direction of the accommodating space.

8. The fan sleeve according to any one of claims 1-7, characterized in that, The noise reduction component provided at the air inlet includes a first guide ring, which surrounds the air inlet and forms a first guide channel with a flow area that gradually decreases along the airflow direction; And / or, The noise reduction component provided at the air inlet includes a flow guide grille, which covers the air inlet. And / or, The noise reduction component provided at the air inlet includes a first guide cone. The first guide cone is located in the middle of the air inlet. The first guide cone is coaxially arranged with the air inlet, and the projection range of the first guide cone on the outer shell along the airflow direction is within the range of the air inlet. And / or, The noise reduction component located at the air outlet includes a second guide ring, which surrounds the air outlet and forms a second guide channel with a gradually increasing flow area along the airflow direction; And / or, The noise reduction component located at the air outlet includes a second guide cone. The second guide cone is located in the middle of the air outlet and is coaxially arranged with the air outlet. The projection range of the second guide cone on the outer casing along the airflow direction is within the range of the air outlet.

9. The fan sleeve according to any one of claims 1-7, characterized in that, The noise reduction component is detachably connected to the housing; or, The outer shell and the noise reduction component are an integrated structure.

10. An electrical device, characterized in that, include: The fan sleeve as described in any one of claims 1-9; A fan is interference-fitted into the receiving space of the fan sleeve, used to drive gas to flow in from the air inlet and out from the air outlet, and each side of the fan abuts against the inner wall of the receiving space.

Images