Axial flow fan with cleaning device

Abstract

The axial flow fan with the cleaning device comprises a shell, a fan body and a protective net, the fan body is connected to the inner wall of the shell, the protective net is connected to one end of the shell, the protective net is connected with a cleaning brush, the cleaning brush is rotationally connected to the protective net, and the cleaning brush is used for cleaning the protective net. When the protective net is cleaned, the surface of the protective net can be cleaned by rotating the cleaning brush, dust, sundries and other impurities adhering to the protective net are removed in time, the impurities are prevented from being accumulated to block pores of the protective net as much as possible, and airflow smoothness is improved.

Description

Technical Field

[0001] This application relates to the field of axial flow fans, and more particularly to an axial flow fan with a cleaning device. Background Technology

[0002] Axial flow fans, with their advantages of large air volume, low energy consumption, and convenient installation, are widely used in various fields such as building ventilation, industrial heat dissipation, and equipment cooling. Among them, low-noise, stable-flow axial flow fans effectively reduce noise emissions during operation by optimizing structural design and noise reduction treatment while ensuring ventilation efficiency and airflow stability. With the upgrading of industrial intelligence and the increasing demands for environmental quality in civil applications, various application scenarios have placed higher requirements on the operating noise and airflow stability of axial flow fans. Therefore, the research and development and application of low-noise, stable-flow axial flow fans has become an inevitable trend in industry development. Currently, axial flow fans typically consist of a casing, a fan body, and a protective net. The fan body is installed inside the casing and is used to generate airflow. The protective net is connected to the end of the casing and is used to block external debris from entering the casing, protecting the fan blades, motor, and other core components of the fan body and preventing damage to these components.

[0003] Regarding the aforementioned technologies, after prolonged use, the protective netting is prone to accumulating impurities, which in turn affects the smoothness of airflow. Summary of the Invention

[0004] To reduce impurities in the protective mesh and improve airflow smoothness, this application provides an axial flow fan with a cleaning device.

[0005] The axial flow fan with a cleaning device provided in this application adopts the following technical solution: An axial flow fan with a cleaning device includes a housing, a fan body, and a protective net. The fan body is connected to the inner wall of the housing, the protective net is connected to one end of the housing, and a cleaning brush is connected to the protective net. The cleaning brush is rotatably connected to the protective net and is used to clean the protective net.

[0006] By adopting the above technical solution, when cleaning the protective net, the surface of the protective net can be cleaned by rotating the cleaning brush, which can remove dust, debris and other impurities adhering to the protective net in a timely manner, avoid the accumulation of impurities and blockage of the protective net's pores as much as possible, and improve airflow. At the same time, the cleaning brush is directly connected to the protective net, and cleaning can be completed without disassembling the protective net, making the operation convenient.

[0007] Optionally, the fan body includes a motor and fan blades. The motor is connected to the inner wall of the housing, the fan blades are connected to the motor output shaft, and the cleaning brush is disposed on the side of the protective net away from the fan blades. The cleaning brush is detachably connected to the fan blades.

[0008] By adopting the above technical solution, when in use, the motor starts and drives the fan blades to rotate, generating airflow. At the same time, the fan blades drive the detachable cleaning brush to rotate synchronously. The cleaning brush cleans the protective net, so that impurities are not sucked into the housing after cleaning, thus protecting the main body of the fan. At the same time, the cleaning brush can be automatically cleaned without the need for an additional drive structure, saving equipment costs and improving cleaning efficiency. The detachable design of the cleaning brush also facilitates its disassembly, cleaning and replacement, minimizing the impact of brush wear on the cleaning effect and further improving the convenience of equipment maintenance.

[0009] Optionally, the cleaning brush is connected to the fan blade via a mounting rod. The fan blade has a slot at one end near the protective net. One end of the mounting rod is connected to the cleaning brush, and the other end of the mounting rod passes through the protective net and is inserted into the fan blade through the slot. The mounting rod is connected to a locking component, which is used to lock the mounting rod to the protective net.

[0010] By adopting the above technical solution, when in use, one end of the mounting rod is passed through the protective net and inserted into the slot of the fan blade. The mounting rod is then locked to the protective net using the locking component, thereby achieving a stable connection between the cleaning brush and the fan blade. This enables the mounting rod and the fan blade to be quickly positioned and connected, allowing the cleaning brush to rotate smoothly. This facilitates the cleaning of the protective net by the cleaning brush, minimizes the risk of the mounting rod falling off during the cleaning process, and improves the reliability of the cleaning process and the operational stability of the cleaning brush.

[0011] Optionally, an installation groove is provided on the periphery of the mounting rod. The locking assembly includes a locking block and a moving part. The locking block slides and engages with the inner wall of the installation groove. The locking block is used to contact the end of the protective net near the fan blade. The moving part is used to drive the locking block to move and move the locking block closer to or away from the protective net.

[0012] By adopting the above technical solution, during use, the moving part drives the locking block to slide along the inner wall of the mounting groove. When the locking block approaches the protective net, the locking block and the end of the protective net near the fan blades are in close contact, thereby locking the mounting rod to the protective net and minimizing the possibility of the mounting rod detaching from the fan blades. When the moving part drives the locking block away from the protective net, the locking of the mounting rod is released, thus realizing the quick locking and unlocking of the mounting rod and the protective net, which is convenient to operate.

[0013] Optionally, the moving component includes a first spring and a pull rod. One end of the first spring is connected to the inner wall of the mounting groove, and the other end of the first spring is connected to the locking block. The spring is used to drive the locking block to move and move the locking block closer to the protective net. The mounting groove has a connecting hole at the end away from the fan blade. The length direction of the pull rod is consistent with the length direction of the mounting rod. One end of the pull rod is connected to the locking block, and the other end of the pull rod passes through the connecting hole. The pull rod slides and engages with the inner wall of the connecting hole and drives the locking block away from the protective net.

[0014] By adopting the above technical solution, during use, the elastic force of the first spring can drive the locking block closer to the protective net, thereby locking the mounting rod. During installation, the mounting rod is inserted through the protective net into the slot of the fan blade, and the locking block will automatically contact the protective net under the action of the first spring to complete the locking, simplifying the installation operation. During disassembly, the operator pulls the lever, which slides along the inner wall of the connecting hole and drives the locking block to overcome the elastic force of the first spring and move away from the protective net, thereby releasing the lock. This allows for quick disassembly of the mounting rod and cleaning brush, making the operation convenient, time-saving, and labor-saving.

[0015] Optionally, the protective net includes support rings and support rods. Several support rings are provided and are coaxially arranged. The length direction of the support rod is consistent with the radial direction of the support rings. The support rod is used to connect several support rings. The cleaning brush is used to clean the support rings.

[0016] By adopting the above technical solution, during use, several coaxially arranged support rings are connected by support rods to form a protective net, which can reduce the entry of external debris into the housing. When the cleaning brush rotates, it cleans the support rings in a targeted manner, thereby removing the impurities stuck to the support rings. This minimizes the accumulation of impurities on the support rings, which affects airflow and extends the service life of the protective net.

[0017] Optionally, the cleaning brush is connected to the mounting rod via a connecting rod. The cleaning brush includes a sleeve and bristles. The sleeve is fitted onto the connecting rod, and the bristles are connected to the sleeve. The bristles are used to contact the support ring.

[0018] By adopting the above technical solution, when the mounting rod rotates, it drives the connecting rod to rotate. The sleeve and brush bristles move with the connecting rod, and the brush bristles contact the support ring and clean the surface of the support ring, thereby reducing impurities on the surface of the support ring.

[0019] Optionally, the sleeve is rotatably connected to the connecting rod, and the connecting rod is connected to a reset member, which is used to drive the sleeve to rotate and drive the bristles closer to the support ring.

[0020] By adopting the above technical solution, when the cleaning brush rotates with the connecting rod and the bristles come into contact with the support rod of the protective net, the bristles will be subjected to the squeezing force of the support rod. This force can drive the sleeve to rotate around the connecting rod, thereby causing the bristles to rotate synchronously to avoid the support rod. This minimizes the damage to the bristles due to hard collision and squeezing with the support rod, ensuring the structural integrity and service life of the bristles. At the same time, the force generated by the reset component can drive the sleeve to rotate in the opposite direction, causing the bristles to quickly reset after avoiding the support rod and re-adhere to the support ring to continue the cleaning operation. This not only effectively protects the bristles but also ensures that the cleaning operation is continuous and smooth, minimizing the impact of the avoidance action on the cleaning effect.

[0021] Optionally, the connecting rod is connected to a plurality of cleaning cotton, which is used to contact the support rod.

[0022] By adopting the above technical solution, during use, the rotating connecting rod drives the cleaning cotton to move synchronously. The cleaning cotton contacts the support rod and cleans the surface of the support rod, further reducing impurities on the protective net and further ensuring smooth airflow.

[0023] Optionally, the inner wall of the housing is provided with a layer of sound-absorbing cotton.

[0024] By adopting the above technical solution and adding a sound-absorbing cotton layer, the sound-absorbing cotton layer absorbs the noise generated by the main body of the fan during use, thereby reducing noise pollution.

[0025] In summary, this application includes at least one of the following beneficial technical effects: When cleaning the protective net, you can use the rotating cleaning brush to clean the surface of the net, remove dust, debris and other impurities adhering to the net in time, avoid the accumulation of impurities and blockage of the net's pores, and improve airflow. At the same time, the cleaning brush is directly connected to the protective net, so cleaning can be completed without disassembling the net, making the operation convenient. When in use, pass one end of the mounting rod through the protective net and insert it into the slot of the fan blade. Then, lock the mounting rod to the protective net using the locking component to achieve a stable connection between the cleaning brush and the fan blade. This enables the mounting rod and the fan blade to be quickly positioned and connected, allowing the cleaning brush to rotate smoothly. This facilitates the cleaning brush to clean the protective net and minimizes the risk of the mounting rod falling off during the cleaning process, thereby improving the reliability of the cleaning process and the operational stability of the cleaning brush. When the cleaning brush rotates with the connecting rod and the bristles come into contact with the support rod of the protective net, the bristles will be subjected to the squeezing force of the support rod. This force can drive the sleeve to rotate around the connecting rod, thereby causing the bristles to rotate synchronously to avoid the support rod and minimize the damage to the bristles due to hard collision and squeezing with the support rod. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0027] Figure 2 This is a cross-sectional view of this embodiment, used to show the main body of the wind turbine.

[0028] Figure 3 This is a three-dimensional structural diagram of the mounting rod, connecting rod, and cleaning brush in this embodiment. Figure 4 This is the embodiment. Figure 3 A cross-sectional view showing the locking assembly and cavity.

[0029] Figure 5 This is the embodiment. Figure 3 A cross-sectional view used to show the torsion spring.

[0030] Explanation of reference numerals in the attached drawings: 100, housing; 110, fan body; 111, motor; 112, fan blade; 113, slot; 120, sound-absorbing cotton layer; 200, protective net; 210, support ring; 220, support rod; 230, vent; 300, cleaning brush; 310, sleeve; 311, mounting block; 312, rotating rod; 320, brush bristles; 330, torsion spring; 400, mounting rod; 410, main rod; 411, mounting groove; 412, connecting hole; 420, insert block; 430, connecting rod; 431, cavity; 432, fixing rod; 433, cleaning cotton; 434, connecting port; 500, locking assembly; 510, locking block; 520, moving part; 521, first spring; 522, pull rod. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses an axial flow fan with a cleaning device. (Refer to...) Figure 1 and Figure 2 An axial flow fan with a cleaning device includes a housing 100, a protective net 200, and a cleaning brush 300. The housing 100 is cylindrical and open at both ends. The protective net 200 is connected to one end of the housing 100. The cleaning brush 300 is rotatably connected to the protective net 200, with its length aligned with the radial direction of the protective net 200, and its axis of rotation collinear with the central axis of the housing 100. The cleaning brush 300 is used to clean the protective net 200, thereby reducing impurities on the protective net 200 and improving airflow smoothness.

[0033] Reference Figure 1 and Figure 2 The inner wall of the housing 100 is connected to a sound-absorbing cotton layer 120. A fan body 110 is connected to the housing 100. The fan body 110 includes a motor 111 and fan blades 112. The motor 111 is connected to the inner wall of the housing 100 via a bracket. The fan blades 112 are connected to the output shaft of the motor 111 via a key. The fan blades 112 are located on the side of the motor 111 near the protective net 200. The protective net 200 includes support rings 210 and support rods 220. There are four support rings 210, which are coaxially arranged. The central axis of the support rings 210 is collinear with the central axis of the housing 100, and the radii of the four support rings 210 increase sequentially. There are four support rods 220, whose length direction is consistent with the radial direction of the housing 100. The four support rods 220 are distributed at equal angular intervals along the circumference of the housing 100. Ventilation openings 230 are formed between adjacent support rings 210.

[0034] Reference Figure 2 and Figure 3A cleaning brush 300 is positioned on the side of the protective net 200 away from the fan body 110. The fan blade 112 is detachably connected to a mounting rod 400, the length of which is aligned with the axial direction of the housing 100. A rectangular slot 113 is provided at the end of the fan blade 112 closest to the protective net 200. The mounting rod 400 includes a main rod 410 and a plug 420. The plug 420 is connected to one end of the main rod 410 and is inserted into the fan blade 112 through the slot 113. The end of the main rod 410 away from the fan blade 112 passes through and is rotatably connected to the protective net 200. The central axis of the main rod 410 is collinear with the central axis of the housing 100.

[0035] Reference Figure 2 and Figure 4 The main rod 410 is located outside the housing 100, with a connecting rod 430 connected to one end. The length of the connecting rod 430 is radially aligned with the housing 100, and one end of the connecting rod 430 is connected to the periphery of the main rod 410. A cleaning brush 300 is connected to the connecting rod 430. The main rod 410 is connected to a locking assembly 500. A mounting groove 411 is formed on the periphery of the main rod 410, with the depth of the mounting groove 411 radially aligned with the main rod 410. The locking assembly 500 is connected to the inner wall of the mounting groove 411 and includes a locking block 510 and a moving part 520. A connecting hole 412 is formed at the end of the mounting groove 411 away from the fan body 110. The depth of the connecting hole 412 is axially aligned with the housing 100, and the length of the connecting hole 412 is radially aligned with the main rod 410.

[0036] Reference Figure 3 and Figure 4 The movable component 520 includes a first spring 521 and a pull rod 522. The length direction of the first spring 521 is consistent with the radial direction of the main rod 410. One end of the first spring 521 is connected to the inner wall of the mounting groove 411, and the other end of the first spring 521 is connected to the locking block 510. The first spring 521 is used to drive the locking block 510 to move and drive the locking block 510 closer to the protective net 200. The end of the locking block 510 away from the fan body 110 is used to contact the end of the protective net 200 close to the fan body 110. The length direction of the pull rod 522 is consistent with the length direction of the main rod 410. One end of the pull rod 522 is connected to the locking block 510, and the other end passes through the connecting hole 412 and extends to the outside of the main rod 410.

[0037] Reference Figure 3 and Figure 4There are six cleaning brushes 300, and the cleaning brushes 300 are arranged in pairs. The two cleaning brushes 300 are located in a vent 230, and the two cleaning brushes 300 are respectively used to contact the inner walls of the vent 230 at both ends of the radial direction of the housing 100. The cleaning brush 300 includes a sleeve 310 and bristles 320. The sleeve 310 is rotatably sleeved on the connecting rod 430. The central axis of the sleeve 310 is collinear with the central axis of the connecting rod 430. The sleeve 310 is connected to the periphery of the mounting block 311. The bristles 320 are connected to the mounting block 311, with one end of the bristles 320 connected to the mounting block 311 and the other end of the bristles 320 used to contact the support ring 210.

[0038] Reference Figure 4 and Figure 5 The connecting rod 430 has a cavity 431, and a fixed rod 432 is connected inside the cavity 431. The central axis of the fixed rod 432 is collinear with the central axis of the connecting rod 430. Six connecting ports 434 are opened on the periphery of the connecting rod 430, and the connecting ports 434 communicate with the cavity 431. A rotating rod 312 is connected to the inner wall of the sleeve 310. Each rotating rod 312 passes through a connecting port 434 and slides in fit with the connecting port 434. The end of the rotating rod 312 away from the sleeve 310 is rotatably connected to the fixed rod 432.

[0039] Reference Figure 4 and Figure 5 The rotating rod 312 is connected to a reset element, which is a torsion spring 330. The torsion spring 330 is sleeved on the fixed rod 432, with one end of the torsion spring 330 connected to the rotating rod 312 and the other end connected to the fixed rod 432. The torsion spring 330 is used to drive the rotating rod 312 to rotate and drive the bristles 320 closer to the vent 230. Reference Figure 3 and Figure 4 Three cleaning cotton balls 433 are connected around the connecting rod 430. Each cleaning cotton ball 433 is located in a ventilation opening 230 and is located between two adjacent cleaning brushes 300. The cleaning cotton balls 433 are used to contact the two ends of the support rod 220 in the width direction.

[0040] The implementation principle of an axial flow fan with a cleaning device according to an embodiment of this application is as follows: When cleaning the protective net 200, one end of the mounting rod 400 is passed through the protective net 200 and inserted into the slot 113 of the fan blade 112. At this time, the locking block 510 moves under the elastic force of the first spring 521 and contacts the end of the protective net 200 near the fan blade 112, so that the mounting rod 400 is stably connected to the fan blade 112. The fan blade 112 rotates and drives the mounting rod 400 to rotate. The bristles 320 contact the support ring 210 to clean the support ring 210, remove the impurities adhering to the support ring 210, and try to avoid the accumulation of impurities affecting the airflow. On the other hand, it drives the cleaning cotton 433 to move. The cleaning cotton 433 contacts the support rod 220 to clean the support rod 220, further reducing the impurities on the protective net 200 and improving the smoothness of airflow.

[0041] When the cleaning brush 300 rotates with the connecting rod 430, and the bristles 320 come into contact with the support rod 220, the bristles 320 are subjected to a squeezing force from the support rod 220. This force drives the sleeve 310 to rotate around the connecting rod 430, causing the bristles 320 to rotate synchronously to avoid the support rod 220, thus minimizing damage to the bristles 320 due to hard collision and squeezing with the support rod 220. When the bristles 320 move away from the support rod 220, the elastic force of the torsion spring 330 causes the sleeve 310 to rotate in the opposite direction, allowing the bristles 320 to quickly return to their original position after avoiding the support rod 220, and re-adhere to the support ring 210 to continue the cleaning operation. After cleaning, the operator pulls one end of the pull rod 522 on the mounting rod 400. The pull rod 522 slides along the inner wall of the connecting hole 412 and drives the locking block 510 to overcome the elastic force of the first spring 521 and move away from the protective net 200, thus releasing the lock on the mounting rod 400. Then the mounting rod 400 is removed from the fan blade 112 to reduce the impact of the connecting rod 430 and the cleaning brush 300 on the air output efficiency when the equipment is in use.

[0042] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An axial flow fan with a cleaning device, comprising a housing (100), a fan body (110), and a protective net (200), wherein the fan body (110) is connected to the inner wall of the housing (100), and the protective net (200) is connected to one end of the housing (100), characterized in that: The protective net (200) is connected to a cleaning brush (300), which is rotatably connected to the protective net (200) and is used to clean the protective net (200).

2. An axial flow fan with a cleaning device according to claim 1, characterized in that: The main body of the fan (110) includes a motor (111) and a fan blade (112). The motor (111) is connected to the inner wall of the housing (100), and the fan blade (112) is connected to the output shaft of the motor (111). The cleaning brush (300) is located on the side of the protective net (200) away from the fan blade (112), and the cleaning brush (300) is detachably connected to the fan blade (112).

3. An axial flow fan with a cleaning device according to claim 2, characterized in that: The cleaning brush (300) is connected to the fan blade (112) via a mounting rod (400). The fan blade (112) has a slot (113) at one end near the protective net (200). One end of the mounting rod (400) is connected to the cleaning brush (300), and the other end of the mounting rod (400) passes through the protective net (200) and is inserted into the fan blade (112) via the slot (113). The mounting rod (400) is connected to a locking component (500), which is used to lock the mounting rod (400) to the protective net (200).

4. An axial flow fan with a cleaning device according to claim 3, characterized in that: The mounting rod (400) has a mounting groove (411) on its periphery. The locking assembly (500) includes a locking block (510) and a moving part (520). The locking block (510) is slidably fitted into the inner wall of the mounting groove (411). The locking block (510) is used to contact the end of the protective net (200) near the fan blade (112). The moving part (520) is used to drive the locking block (510) to move and drive the locking block (510) closer to or away from the protective net (200).

5. An axial flow fan with a cleaning device according to claim 4, characterized in that: The movable component (520) includes a first spring (521) and a pull rod (522). One end of the first spring (521) is connected to the inner wall of the mounting groove (411), and the other end of the first spring (521) is connected to the locking block (510). The spring is used to drive the locking block (510) to move and drive the locking block (510) closer to the protective net (200). The mounting groove (411) has a connecting hole (412) at the end away from the fan blade (112). The length direction of the pull rod (522) is consistent with the length direction of the mounting rod (400). One end of the pull rod (522) is connected to the locking block (510), and the other end of the pull rod (522) passes through the connecting hole (412). The pull rod (522) slides and engages with the inner wall of the connecting hole (412) and drives the locking block (510) away from the protective net (200).

6. An axial flow fan with a cleaning device according to claim 1, characterized in that: The protective net (200) includes a support ring (210) and a support rod (220). There are several support rings (210), and several support rings (210) are coaxially arranged. The support rod (220) is used to connect several support rings (210). The cleaning brush (300) is used to clean the support rings (210).

7. An axial flow fan with a cleaning device according to claim 6, characterized in that: The cleaning brush (300) is connected to the mounting rod (400) via a connecting rod (430). The cleaning brush (300) includes a sleeve (310) and bristles (320). The sleeve (310) is fitted onto the connecting rod (430), and the bristles (320) are connected to the sleeve (310). The bristles (320) are used to contact the support ring (210).

8. An axial flow fan with a cleaning device according to claim 7, characterized in that: The sleeve (310) is rotatably connected to the connecting rod (430), and the connecting rod (430) is connected to a reset member. The reset member is used to drive the sleeve (310) to rotate and drive the bristles (320) to approach the support ring (210).

9. An axial flow fan with a cleaning device according to claim 8, characterized in that: The connecting rod (430) is connected to a plurality of cleaning cotton (433), which is used to contact the support rod (220).

10. An axial flow fan with a cleaning device according to claim 1, characterized in that: The inner wall of the housing (100) is provided with a sound-absorbing cotton layer (120).

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