Environment-friendly noise reduction cabinet type fan

Abstract

The invention discloses an environment-friendly noise reduction type cabinet type fan, and belongs to the field of cabinet type fans. Comprising a cabinet type fan and a dustproof assembly, the dustproof assembly comprises a dustproof part for filtering dust at an air inlet flange, a switching part is arranged on the dustproof part, a first driving part is arranged on the dustproof part, two sets of wind speed sensors are arranged at the positions, located on the right sides of a first filter screen and a second filter screen, of the inner wall of the air inlet flange at the same time, and a controller is arranged on the cabinet type fan; the dust removal assembly and the dust prevention assembly comprise two sets of suction parts which are arranged on the first driving part and used for sucking away cleaned dust and other impurities, and two sets of second driving parts for driving the two sets of suction parts to work are arranged on the dust prevention part. According to the environment-friendly noise reduction type cabinet type fan, through the suction part and the second driving part of the dust removal assembly, dust cleaned by the cleaning brush rod and dust at the friction rod can be sucked away, cleanliness of the filter screen and the switching mechanism is kept, the filtering and switching effects are guaranteed, and attachment of dust to fan blades, a motor and other core components is reduced.

Description

Technical Field

[0001] This invention relates to the field of tunnel fire safety technology, and in particular to an environmentally friendly, noise-reducing cabinet-type fan. Background Technology

[0002] In industrial production, commercial services, and civil buildings, cabinet-type fans, as key equipment for achieving air circulation, temperature regulation, and pollutant removal, have been widely used in various scenarios such as electronic workshops, shopping malls and supermarkets, office buildings, residential buildings, and hospital wards. However, with increasing societal demands for indoor air quality, enhanced energy conservation awareness, and higher requirements for equipment operational stability, traditional cabinet-type fans have revealed shortcomings in long-term use. As the continuous operating time of cabinet fans increases, dust and impurities constantly come into contact with and adhere to the blades during the long-term continuous air extraction process. Most traditional models are equipped with simple filters such as ordinary nylon mesh at the air inlet, which have limited filtration accuracy and are prone to clogging after prolonged use. Replacing the filter requires manual shutdown. Workers must first use tools to disassemble the cabinet panel, which is usually secured by multiple screws, making the disassembly process tedious. Then, the old filter must be carefully removed; it is often covered in dust, making cleaning difficult and potentially causing secondary pollution of the surrounding environment. Next, a new filter must be installed, ensuring a tight fit between the filter and the air inlet flange and other components to avoid gaps that could affect filtration efficiency. This entire process is time-consuming. Therefore, there is a need to design an environmentally friendly, noise-reducing cabinet fan.

[0003] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0004] This invention provides an environmentally friendly, noise-reducing cabinet fan to solve the problems of dust accumulation on the blades of cabinet fans during long-term operation, low precision and easy clogging of traditional simple filters, and the cumbersome and time-consuming process of manually replacing filters by stopping the machine and removing the panel.

[0005] The present invention adopts the following technical solution: an environmentally friendly, noise-reducing cabinet-type fan. The cabinet-type fan includes a frame-shaped housing panel. The housing panel is a composite structure consisting of color steel plate, centrifugal glass wool, and galvanized steel perforated plate, arranged sequentially from the outside to the inside. An outlet flange and an inlet flange are respectively embedded through and embedded on opposite sides of the housing panel. A dustproof component is disposed on the surface of the housing panel. The dustproof component includes a dustproof part for filtering dust at the inlet flange. The dustproof part has a first filter and a second filter. The dustproof part is provided with a filter screen for filtering the first and second filters. The switching unit for auxiliary switching of filter screen 1 and filter screen 2 is provided on the dustproof unit. A drive unit 1 is provided on the dustproof unit to switch between filter screen 1 and filter screen 2. Two sets of wind speed sensors are provided on the inner wall of the air inlet flange at the right side of both filter screen 1 and filter screen 2. A controller is provided on the cabinet fan. The dust removal component is provided on the dustproof component. The dustproof component includes two sets of suction units provided on the drive unit 1 for sucking away the cleaned dust and other impurities. Two sets of drive units 2 are provided on the dustproof unit to drive the two sets of suction units to operate.

[0006] Furthermore, both filter screen one and filter screen two are movably inserted into the air inlet flange through the top. A mounting cover is fixed to the top of the air inlet flange. The mounting cover has a T-shaped structure, and the horizontal part of the T-shape of the mounting cover is an extension cover. Side plates are fixed to both sides of the inner wall of the extension cover. Guide rods are fixed to both sides of filter screen one and filter screen two. Two sets of parallel guide grooves are opened on the opposite side of the two sets of side plates to adapt to the sliding of the guide rods. The guide rods slide in the guide grooves. T-shaped sliding rods are fixed near the sides of the opposite side of filter screen one and filter screen two. T-shaped grooves adapted to the T-shaped sliding rods are opened on the air inlet flange. The T-shaped sliding rods slide in the T-shaped grooves.

[0007] Furthermore, the switching unit includes a friction wheel with a bearing mounted on the side plate. A funnel-shaped dust cover coaxially arranged with the friction wheel is installed on the surface of the side plate. There is a small gap between the dust cover and the friction wheel. Friction rods that are in close contact with the friction wheel are fixed on both sides of the side of the filter screen one and the filter screen two that are close to each other. There is contact friction between the friction rods and the friction wheel. The filter screen one and the filter screen two are staggered, and one end of each is in close contact with the friction wheel through the friction rod.

[0008] Furthermore, a mounting box is fixed between the two sets of dust covers, and the dust covers extend to both sides with extension covers, which are box-shaped structures. A cleaning brush rod is movably installed through the two sets of extension covers.

[0009] Furthermore, the cleaning brush rod has a brush shaft, one end of which extends into the extension cover and is fixed with a gear one. A gear two that meshes with the gear one is fixedly sleeved on the friction wheel. The cleaning brush rod rotates synchronously with the gear two through the gear one, and the gear two rotates synchronously with the rotation of the friction wheel.

[0010] Furthermore, the drive unit one includes a motor two fixed to the side of the side plate. The output end of the motor two is fixed with a rotating shaft. The rotating shaft passes through the left side plate, friction wheel, dust cover, mounting box and right side plate in sequence. The friction wheels on both sets of side plates are fixedly connected to the rotating shaft.

[0011] Furthermore, the suction unit includes a suction pipe fixed to the mounting box by two sets of mounting seats spaced apart. The two sides of the suction pipe are connected to multiple sets of suction nozzles through multiple sets of pipes. The multiple sets of suction nozzles are symmetrically distributed along the axis of the brush shaft. The mounting box has multiple sets of mounting holes adapted to the pipes.

[0012] Furthermore, the first suction nozzle has a notch, and cleaning barbs are provided at the edge of the notch and the edge of the first suction nozzle. The cleaning barbs provided at the edge of the notch are upright.

[0013] Furthermore, two sets of right-angle tubes are connected near both ends of the suction tube, and a second suction nozzle is connected to each right-angle tube, with the second suction nozzle facing the friction rod.

[0014] Furthermore, the two sets of drive units are respectively connected to the suction pipe ends of the two sets of suction units. The drive unit includes a fan unit fixed to the side of one set of side plates by a mounting base plate. The air outlet of the fan unit is connected to the suction pipe through a dust hood. When the fan unit is running, it generates suction force and sucks dust into the suction pipe through the suction pipe and pipeline via the suction nozzle one and suction nozzle two. The air inlet of the suction pipe is connected to a dustproof net by fasteners.

[0015] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: An environmentally friendly, noise-reducing cabinet-type fan utilizes a composite structure of color steel plate, centrifugal glass wool, and galvanized steel perforated plate for its casing panel. This structure ensures both protection and aesthetics while absorbing operating noise, achieving environmentally friendly noise reduction. The dustproof component features two filters, along with a switching unit and a drive unit. Combined with a wind speed sensor and controller, it automatically switches filters when dust accumulation causes a decrease in wind speed, eliminating the need for manual shutdown and disassembly of the cabinet panel, thus preventing interruptions to the ventilation process. The dust removal component's suction unit and drive unit effectively remove dust generated during filter cleaning, preventing secondary pollution. This eliminates the need for manual cleaning of old filters and installation of new ones, simplifying operations and reducing time consumption. Furthermore, the dual-filter design and automatic switching mechanism, compared to traditional simple filters such as ordinary nylon mesh, improve filtration reliability, reduce dust and impurities adhering to the blades, and ensure long-term stable operation and high ventilation efficiency of the fan. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0017] In the attached diagram: Figure 1 This is an overall schematic diagram of an environmentally friendly, noise-reducing cabinet fan according to this application; Figure 2 for Figure 1 A partial structural diagram; Figure 3 for Figure 2 The right view; Figure 4 for Figure 1 A partial structural diagram; Figure 5 for Figure 4 A partial structural diagram; Figure 6 for Figure 5 Enlarged view of point A; Figure 7 for Figure 4 A schematic diagram of a partial structure; Figure 8 for Figure 7 Enlarged view of point B; Figure 9 A schematic diagram of a partial structure of number 7; Figure 10 for Figure 9 Enlarged view of point C; Figure label: 1. Cabinet-type fan; 11. Casing panel; 12. Volute; 13. Blades; 14. Optical axis; 15. Belt pulley two; 16. Belt body; 17. Motor one; 18. Air outlet flange; 19. Mounting frame; 111. Protective cover; 2. Dustproof components; 21. Filter screen one; 22. Mounting cover; 23. Extension cover; 24. Side plate; 241. Guide groove; 251. T-shaped slide bar; 252. Friction rod; 253. Guide rod; 26. Filter screen two; 27. Friction wheel; 28. Dustproof cover; 281. Extension cover; 282. Connecting corner plate; 29. ​​Mounting box; 210. Rotating shaft; 211. Cleaning brush bar; 212. Gear one; 214. Motor two; 3. Dust removal components; 31. Mounting base; 32. Suction pipe; 33. Nozzle 1; 331. Notch; 332. Cleaning barbs; 34. Right-angle tube; 341. Nozzle 2; 35. Mounting base plate; 36. Dust hood; 37. Fan unit; 371. Air inlet port; 39. Dustproof net. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figures 1 to 4 As shown, this embodiment of the invention provides an environmentally friendly, noise-reducing cabinet-type fan, including a cabinet-type fan 1. The cabinet-type fan 1 includes a frame-shaped box panel 11. To achieve noise reduction, the box panel 11 adopts a composite structure consisting of a 0.7mm color steel plate, centrifugal glass wool, and a 0.4mm galvanized steel perforated plate, arranged sequentially from the outside to the inside. The 0.7mm color steel plate serves as the outer layer, providing protection and aesthetics; the centrifugal glass wool in the middle, with its fine internal pores, effectively absorbs the noise generated during fan operation; the 0.4mm galvanized steel perforated plate secures the centrifugal glass wool without affecting the noise reduction effect, thus comprehensively improving the noise reduction performance.

[0021] Meanwhile, a volute 12 is installed inside the housing panel 11, and a light shaft 14 is installed in the central bearing of the volute 12. The light shaft 14 is made of 45# steel, which has high strength and good wear resistance, and can stably support the operating parts. Blades 13 are mounted on the light shaft 14. The blades 13 are made of 1.2mm galvanized steel plate, which is durable and not easy to rust. When the light shaft 14 rotates, the blades 13 rotate accordingly. The high-speed rotating blades 13 generate thrust on the air, which promotes air flow and realizes the function of ventilation. The gap between the impeller and the volute 12 is 20mm. This gap is reasonably set, which not only ensures the smooth rotation of the impeller, but also reduces airflow leakage and improves the efficiency of the fan.

[0022] A drive unit is provided on one side of the cabinet-type fan 1. This drive unit includes a pulley (not shown in the figure) fixed to one end of the housing panel 11 through which the optical shaft 14 passes. The pulley is made of cast iron B series, which has good wear resistance and transmission stability. A mounting frame 19 is fixed to the bottom of the housing panel 11. The mounting frame 19 is made of No. 8 channel steel, with a stable structure, which can provide reliable support for the drive components. A motor 17 is fixed on the mounting frame 19. The motor model is YDT-200L-4 / 6. The cooling method is self-fan cooling, which can effectively dissipate the heat generated by the generator operation. The insulation class is F, which can adapt to high temperature environments. The motor power is 24 / 8.5Kw, which can meet the power requirements under different working conditions. A second pulley 15 is fixed to the output end of the motor 17. A B-type belt body 16 connects the second pulley 15 and the first pulley. When the motor 17 is working, it drives the first pulley to rotate through the belt body 16, thereby causing the optical shaft 14 and the blades 13 to rotate.

[0023] Meanwhile, an air outlet flange 18 and an air inlet flange (not shown in the figure) are respectively embedded through the opposite sides of the cabinet panel 11. The air inlet flange and the air outlet flange 18 are made of 2mm Q235B material, which has high strength and good sealing performance. Air enters from the air inlet flange, is pushed by the blades 13, and is discharged from the air outlet flange 18. This cabinet fan 1 is a centrifugal fire smoke exhaust fan with a forward-inclined blade and is installed horizontally. The blades 13 are connected to the impeller by riveting. The flow rate of the cabinet fan 1 can reach 34310 / 23300m³ / h, the total pressure of the cabinet fan 1 is 810 / 470Pa, the speed of motor 17 is 1450 / 960r / min, the speed of the cabinet fan 1 is 810 / 550r / min, and the efficiency of the cabinet fan 1 is 57 / 51%, which can efficiently transport air. In addition, a volute tongue plate (not shown in the figure) is provided on the volute 12. The volute tongue plate is made of 1.2mm galvanized steel plate, which helps to optimize airflow and reduce eddy noise. Furthermore, a protective cover 111 is fixed to the side of the cabinet panel 11 to protect the belt pulley 1, belt pulley 2 15, and belt body 16, preventing external interference or injury to personnel during operation. This cabinet fan 1 can transport media with a temperature up to 280℃, with an operating time of 30 minutes, meeting the requirements of GA211-2009, and is suitable for fire smoke extraction and other scenarios.

[0024] Reference Figures 4 to 6As shown, a dustproof component 2 is provided on the surface of the cabinet panel 11. This dustproof component 2 is used to filter the air entering the air inlet flange to reduce the direct entry of external dust and impurities into the cabinet, which could affect the operation of the core components of the fan. The dustproof component 2 includes a dustproof section installed on the air inlet flange. This dustproof section includes a filter screen 21 and a filter screen 26 that are movably inserted into the air inlet flange from the top. The filter screens 21 and 26 can filter dust, improving the filtration effect. Simultaneously, a mounting cover 22 is fixed to the top of the air inlet flange. This mounting cover 22 has a T-shaped structure, providing a mounting base for other components of the dustproof component. The horizontal T-shaped portion of the mounting cover 22 is an extension cover 23, and side plates 24 are fixed to both sides of the inner wall of the extension cover 23. The side plates 24 serve as supports and guides.

[0025] Furthermore, guide rods 253 are fixed on both sides of filter screen 1 21 and filter screen 26. At the same time, two sets of parallel guide grooves 241 are opened on the opposite side of the two sets of side plates 24 to accommodate the sliding of the guide rods 253. The guide rods 253 slide in the guide grooves 241 to ensure that filter screen 1 21 and filter screen 26 remain stable during movement. T-shaped slide rods 251 are fixed near the sides of the opposite side of filter screen 1 21 and filter screen 26. At the same time, T-shaped grooves (not shown in the figure) that are adapted to the T-shaped slide rods 251 are opened on the air inlet flange. The T-shaped slide rods 251 slide in the T-shaped grooves, further enhancing the stability of filter screen 1 21 and filter screen 26 during installation and sliding. Continue to refer to Figures 4 to 6 As shown, a switching section is provided on the side of each of the two sets of side plates 24 that are close to each other. The switching section includes a friction wheel 27 with a bearing mounted on the side plate 24. In practical applications, the friction wheel 27 can rotate flexibly through the bearing, providing a power transmission basis for the switching of the filter screen. Furthermore, a dust cover 28, coaxially arranged with the friction wheel 27, is installed on the surface of the side plate 24 through a connecting corner plate 282. There is a small gap between the dust cover 28 and the friction wheel 27, so as not to affect the rotation of the friction wheel 27, and to reduce dust falling on the friction wheel 27, thus ensuring the cleanliness and normal rotation of the friction wheel 27.

[0026] Furthermore, friction rods 252 are fixed on both sides of the face of filter screen 21 and filter screen 26 that are close to each other, and these friction rods 252 are in close contact with the friction wheel 27. There is contact friction between the friction rods 252 and the friction wheel 27. When the filter screens move, the friction between the friction rods 252 and the friction wheel 27 can drive the friction wheel 27 to rotate. It should be noted that filter screen 21 and filter screen 26 are staggered, and one end of each is in close contact with the friction wheel 27 via the friction rods 252. This staggered design, with the friction rods 252 in contact with the friction wheel 27, allows the movement of filter screen 21 and filter screen 26 to be synchronized via the friction wheel 27.

[0027] Meanwhile, a mounting box 29 is fixed between the two sets of dust covers 28. The dust covers 28 extend to both sides with extension covers 281, and the extension covers 281 have a box-shaped structure. A cleaning brush rod 211 is movably installed between the two sets of extension covers 281. The cleaning brush rod 211 has a brush shaft. One end of the brush shaft extends into the extension cover 281 and is fixed with a gear 212. At the same time, a gear 2 (not shown in the figure) that meshes with gear 212 is fixedly sleeved on the friction wheel 27. The cleaning brush rod 211 is adapted to rotate synchronously with gear 2 through gear 212. Gear 2 is adapted to rotate synchronously with the rotation of friction wheel 27, so that when friction wheel 27 rotates, gear 2 drives gear 212 to drive the cleaning brush rod 211 to rotate in the opposite direction, so as to clean the surface of filter screen 21.

[0028] Meanwhile, a drive unit is provided on the side of a set of side plates 24. The drive unit includes a second motor 214 fixed to the side of the side plate 24. In practical applications, the second motor 214 provides the power source for the entire switching unit. The output end of the second motor 214 is fixed with a rotating shaft 210. The rotating shaft 210 passes through the left side plate 24, friction wheel 27, dust cover 28, mounting box 29 and right side plate 24 in sequence. The friction wheels 27 on both sets of side plates 24 are fixedly connected to the rotating shaft 210. When the second motor 214 starts, it drives the rotating shaft 210 to rotate, thereby synchronously driving the two sets of friction wheels 27 to rotate. This provides stable and continuous power for the linkage switching of filter screen 1 21 and filter screen 26, ensuring the smoothness and reliability of the filter screen switching process. In actual use, the filter screen can be replaced in a timely and efficient manner according to the usage of the filter screen, ensuring the filtration effect of the air intake of the fan and reducing the impact of dust on the internal components of the fan. It should be noted that in this application, two sets of wind speed sensors are installed on the inner wall of the air inlet flange, simultaneously located to the right of both filter screen 21 and filter screen 26 (in practical applications, wind speed sensors can accurately capture changes in airflow speed). These two sets of wind speed sensors are used to detect the wind speed passing through filter screen 21 and filter screen 26 during use. When the surface of filter screen 21 or filter screen 26 becomes covered with more dust, the resistance to airflow through the filter increases, and the corresponding wind speed decreases. Therefore, by using the wind speed changes detected by the wind speed sensors, the dust coverage on the surfaces of filter screen 21 and filter screen 26 can be further inferred.

[0029] Furthermore, a controller is installed on the cabinet-type fan 1. This controller serves as the core control unit for the entire equipment operation, capable of receiving and processing various signals and issuing control commands to control the equipment's operation. The wind speed sensor is electrically connected to motor 214. In practical applications, when the wind speed sensor detects that the wind speed passing through filter 21 or filter 26 has decreased to a set threshold due to dust accumulation on the filter, it transmits this signal to the controller. Upon receiving the signal, the controller sends a command to motor 214 according to a preset program, driving motor 214 to operate. After motor 214 starts, it drives the rotating shaft 210 to rotate, which in turn synchronously drives the two sets of friction wheels 27 to rotate, achieving the linkage switching between filter 21 and filter 26. This ensures that the clean filter is in use, guaranteeing the filtration effect of the incoming air and reducing the impact of dust on the fan's internal blades 13, motor, and other core components.

[0030] like Figures 8-10 As shown, a dust removal assembly 3 is provided on the side of a set of side plates 24. The dust removal assembly 3 includes two sets of suction sections disposed on the upper and lower surfaces of the mounting box 29. The suction sections can promptly remove dust and other impurities cleaned by the cleaning brush rod 211, keeping the filter screen and surrounding components clean. The suction section includes a suction pipe 32 fixed to the mounting box 29 by two sets of mounting seats 31 spaced apart. The mounting seats 31 provide stable mounting support for the suction pipe 32, and multiple sets of suction nozzles 33 are connected to both sides of the suction pipe 32 through multiple sets of pipes. The suction nozzles 33 are located on the outside of the mounting box 29, and the multiple sets of suction nozzles 33 are symmetrically distributed along the axis of the brush shaft to simultaneously suck up and down the dust emitted by the cleaning brush rod 211 when cleaning the filter screen, thereby increasing the dust coverage and improving the dust removal effect. At the same time, multiple sets of mounting holes (not shown in the figure) adapted to the pipes are opened on the mounting box 29 to facilitate the installation and fixation of the pipes. Furthermore, the suction nozzle 33 has a notch 331 extending towards the brush side of the cleaning brush handle 211, and the cleaning barbs 332 partially contact the brush. Cleaning barbs 332 are provided at the edges of both the notch 331 and the suction nozzle 33. The cleaning barbs 332 at the edges of the notch 331 are upright. When the cleaning brush handle 211 rotates, the brush comes into contact with these upright cleaning barbs 332. During this contact, the cleaning barbs 332 exert a squeezing effect on the brush, causing the dust on the brush surface to vibrate and fall off. The dust, now freed from the brush surface, is more easily sucked away by the suction nozzle 33, thus simultaneously cleaning the dust between the bristles of the cleaning brush handle 211.

[0031] Furthermore, two sets of right-angle tubes 34 are connected near both ends of the suction pipe 32, and each right-angle tube 34 is connected to a second suction nozzle 341. The second suction nozzle 341 is positioned towards the friction rod 252 so that when switching between filter 1 21 and filter 2 26, the side of the friction rod 252 that contacts the friction wheel 27 can be cleaned, reducing the impact of dust on the friction rod 252 on the friction transmission effect of the friction wheel 27.

[0032] Furthermore, two sets of drive units are provided on the side of a set of side plates 24. These two sets of drive units are respectively connected to the suction pipes 32 of the two sets of suction units to realize the suction action. Each drive unit includes a fan unit 37 fixed to the side of a set of side plates 24 by a mounting base plate 35, which ensures that the fan unit 37 is installed firmly. The air outlet of the fan unit 37 is connected to the suction pipe 32 through a dust suction hood 36. When the fan unit 37 is running, it generates suction, which draws dust through the suction pipe 32 and other pipes into the suction through the first suction nozzle 33 and the second suction nozzle 341. The air inlet 371 of the suction pipe 32 is connected to a dustproof net 39 by fasteners. The dustproof net 39 can perform preliminary filtration of the intake air, preventing larger particles of impurities from entering the fan unit 37, protecting the normal operation of the fan unit 37, and extending its service life.

[0033] Working Principle: When the environmentally friendly, noise-reducing cabinet fan is running, motor 17 starts, and its output pulley 15 drives the pulley 1 at one end of the optical shaft 14 to rotate via the B-type belt body 16, thereby causing the optical shaft 14 to rotate. The blades 13 mounted on the optical shaft 14 rotate at high speed, generating thrust on the air entering the air inlet flange. After being pushed by the blades 13, the air is discharged from the air outlet flange 18, achieving the ventilation function. The cabinet panel 11 adopts a composite structure. The outer 0.7mm color steel plate provides protection and aesthetics, the middle centrifugal glass wool absorbs the fan's operating noise through its fine internal pores, and the inner 0.4mm galvanized steel plate with perforated plate fixes the centrifugal glass wool without affecting the noise reduction, comprehensively improving the noise reduction performance. The volute 12 maintains a reasonable gap of 20mm with the impeller to ensure smooth impeller rotation and reduce airflow leakage. The volute tongue plate optimizes airflow and reduces eddy noise. The protective cover 111 protects the belt and other drive components. As a centrifugal fire exhaust fan, this fan can transport 280℃ media for up to 30 minutes, meets relevant standards, and is suitable for fire exhaust and other scenarios.

[0034] When air enters the inlet flange, filter screen 21 (or filter screen 26) of dustproof assembly 2 first filters the air to prevent dust and impurities from entering the cabinet and affecting core components. As dust accumulates on the filter surface, the air resistance increases. The wind speed sensor on the inner wall of the inlet flange detects that the wind speed passing through the filter has decreased to a set threshold and transmits a signal to the controller. After receiving the signal, the controller sends a command to motor 214 of drive unit 1. Motor 214 starts, driving the rotating shaft 210 to rotate, which in turn synchronously drives the friction wheels 27 on the two sets of side plates 24 to rotate. The friction wheels 27 are in close contact with the friction rods 252 on filter screen 21 and filter screen 26, using friction to switch between filter screen 21 and filter screen 26, allowing the clean filter to be used and ensuring the air intake filtration effect.

[0035] During filter switching, the cleaning brush 211 of the switching unit works synchronously. When the filter rises, the friction wheel 27 rotates, and the gear 2 fixedly sleeved on it drives the gear 212 meshing with it to rotate. At this time, the gear 212 rotates towards the filter. Since the brush shaft of the cleaning brush 211 is fixed to the gear 212, the cleaning brush 211 rotates in the opposite direction. This rotation direction allows the brush to interact with the upward direction of the filter during rotation, improving the cleaning effect and thus cleaning the filter surface better. At the same time, the fan 37 of the dust removal assembly 3 starts to generate suction. Through the suction pipe 32 and pipeline, and through multiple sets of suction nozzles 33 symmetrically distributed along the brush shaft axis, the dust emitted from the top and bottom of the cleaning brush 211 when cleaning the filter is simultaneously sucked up, increasing the dust coverage area. The cleaning barbs 332 on the suction nozzles 33 can also simultaneously clean the dust between the bristles during the rotation of the cleaning brush 211, ensuring that the cleaning brush works continuously and effectively.

[0036] Furthermore, the suction nozzles 341 on the two sets of right-angle tubes 34 of the dust removal component 3 are positioned towards the friction rod 252. When switching between filter screen 21 and filter screen 26, the side of the friction rod 252 that contacts the friction wheel 27 is cleaned, reducing the impact of dust on the friction rod 252 on the friction transmission effect with the friction wheel 27. The fan unit 37 is connected to the suction pipe 32 via a dust suction hood 36. The dust filter 39 at the air inlet port 371 of the suction pipe 32 performs preliminary filtration of the intake air, preventing larger particles from entering the fan unit 37 and protecting its normal operation. The coordinated operation of these components enables the fan to achieve ventilation and air exchange while also providing noise reduction, dust prevention, and automatic cleaning functions, ensuring long-term stable operation.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An environmentally friendly, noise-reducing cabinet fan, characterized in that: include Cabinet-type fan (1), the cabinet-type fan (1) includes a box panel (11) with a frame structure. The box panel (11) adopts a composite structure consisting of color steel plate, centrifugal glass wool and galvanized steel plate perforated plate from the outside to the inside. The opposite sides of the box panel (11) are respectively provided with an air outlet flange (18) and an air inlet flange through embedded installation. Dustproof component (2), which is disposed on the surface of the panel (11) of the housing, the dustproof component (2) includes a dustproof part for filtering dust at the air inlet flange, the dustproof part has filter screen one (21) and filter screen two (26), a switching part for assisting the switching of filter screen one (21) and filter screen two (26) is provided on the dustproof part, a drive part one for switching filter screen one (21) and filter screen two (26) is provided on the dustproof part, two sets of wind speed sensors are provided on the inner wall of the air inlet flange at the right side of filter screen one (21) and filter screen two (26), and a controller is provided on the cabinet fan (1); The dust removal component (3) is disposed on the dust prevention component (2). The dust prevention component (2) includes two sets of suction units disposed on the first drive unit and used to suck away the cleaned dust and impurities. The dust prevention unit is provided with two sets of second drive units that drive the two sets of suction units to operate.

2. The environmentally friendly, noise-reducing cabinet fan according to claim 1, characterized in that: Both filter screen one (21) and filter screen two (26) are inserted into the air inlet flange through the top. A mounting cover (22) is fixed to the top of the air inlet flange. The mounting cover (22) has a T-shaped structure, and the horizontal T-shaped part of the mounting cover (22) is an expansion cover (23). Side plates (24) are fixed to both sides of the inner wall of the expansion cover (23). Guide rods (253) are fixed to both sides of both filter screen one (21) and filter screen two (26). Two sets of parallel guide grooves (241) are provided on opposite sides of the plate (24) to accommodate the sliding of the guide rod (253). The guide rod (253) slides in the guide groove (241). T-shaped slide rods (251) are fixed near the sides of the filter screen one (21) and filter screen two (26) that are far apart from each other. A T-shaped groove is provided on the air inlet flange to accommodate the T-shaped slide rod (251). The T-shaped slide rod (251) slides in the T-shaped groove.

3. The environmentally friendly, noise-reducing cabinet fan according to claim 1, characterized in that: The switching unit includes a friction wheel (27) with a bearing mounted on a side plate (24). A dust cover (28) coaxially mounted on the surface of the side plate (24) via a connecting corner plate (282) is provided. There is a small gap between the dust cover (28) and the friction wheel (27). Friction rods (252) that are in close contact with the friction wheel (27) are fixed on both sides of the side of the filter screen one (21) and the filter screen two (26). There is contact friction between the friction rods (252) and the friction wheel (27). The filter screen one (21) and the filter screen two (26) are staggered, and one end of each is in close contact with the friction wheel (27) via the friction rods (252).

4. The environmentally friendly, noise-reducing cabinet fan according to claim 3, characterized in that: An installation box (29) is fixed between the two sets of dust covers (28). The dust covers (28) extend to both sides with extension covers (281), and the extension covers (281) are box-shaped structures. A cleaning brush rod (211) is movably installed between the two sets of extension covers (281).

5. The environmentally friendly, noise-reducing cabinet fan according to claim 4, characterized in that: The cleaning brush rod (211) has a brush shaft, one end of which extends into the extension cover (281) and is fixed with a gear one (212). A gear two that meshes with the gear one (212) is fixedly sleeved on the friction wheel (27). The cleaning brush rod (211) rotates synchronously with the gear two through the gear one (212), and the gear two rotates synchronously with the rotation of the friction wheel (27).

6. The environmentally friendly, noise-reducing cabinet fan according to claim 3, characterized in that: The drive unit includes a second motor (214) fixed to the side of the side plate (24). The output end of the second motor (214) is fixed with a rotating shaft (210). The rotating shaft (210) passes through the left side plate (24), friction wheel (27), dust cover (28), mounting box (29) and right side plate (24) in sequence. The friction wheels (27) on both sets of side plates (24) are fixedly connected to the rotating shaft (210).

7. The environmentally friendly, noise-reducing cabinet fan according to claim 4, characterized in that: The suction unit includes a suction pipe (32) fixed on the mounting box (29) by two sets of mounting seats (31) spaced apart. The suction pipe (32) is connected to multiple sets of suction nozzles (33) through multiple sets of pipes on both sides. The multiple sets of suction nozzles (33) are symmetrically distributed along the axis of the brush shaft. The mounting box (29) has multiple sets of mounting holes adapted to the pipes.

8. The environmentally friendly, noise-reducing cabinet fan according to claim 7, characterized in that: The first suction nozzle (33) has a notch (331), and cleaning barbs (332) are provided at the edge of the notch (331) and the edge of the first suction nozzle (33). The cleaning barbs (332) provided at the edge of the notch (331) are erected.

9. The environmentally friendly, noise-reducing cabinet fan according to claim 7, characterized in that: The suction tube (32) is connected to two sets of right-angle tubes (34) arranged opposite each other at both ends. The right-angle tubes (34) are connected to a second suction nozzle (341), which is positioned towards the friction rod (252).

10. An environmentally friendly, noise-reducing cabinet fan according to claim 6, characterized in that: Two sets of drive units are respectively connected to the suction pipes (32) of two sets of suction units. The drive unit includes a fan unit (37) fixed to the side of a set of side plates (24) by a mounting base plate (35). The air outlet of the fan unit (37) is connected to the suction pipe (32) through a dust hood (36). When the fan unit (37) is running, it generates suction and sucks dust through the suction pipe (32) and the pipeline through the suction pipe (32) and the pipeline through the suction nozzle one (33) and the suction nozzle two (341). The air inlet (371) of the suction pipe (32) is connected to a dustproof net (39) by fasteners.

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