A high-volume axial flow fan for chassis

Abstract

This invention relates to the field of chassis and component equipment technology, and discloses a high-volume axial flow fan for chassis, including a housing, a cover plate, an axial flow motor, a drive unit, and a dust removal device. The cover plate is fixedly connected to the top of the housing. An axial flow motor is installed inside the housing and is connected to an external power supply. Drive units are located on the front and rear left and right sides of the axial flow motor, and are located at the four corners inside the housing and fixedly connected to it. A dust removal device is installed on top of the axial flow motor and fixedly connected to the housing. A drive motor is installed inside the drive unit. A screw is installed at one end of the drive motor, a base rod is installed at one end of the screw, and a push rod is installed at the end of the base rod away from the screw. The push rod is fixedly connected to the base rod. Both the base rod and the push rod have internal threaded holes at one end. This device has advantages such as increasing airflow, improving the device's extraction efficiency, and preventing dust from clogging the air inlet and reducing airflow.

Description

Technical Field

[0001] This invention relates to the field of chassis and accessory equipment technology, specifically a high-volume axial flow fan for chassis. Background Technology

[0002] With social development and the improvement of people's living standards, computers have gradually entered the desks of every household. The computer case is an indispensable part of the computer. The computer case generates a lot of heat during operation, which can easily lead to equipment failure and reduce the service life of the equipment. Usually, the computer case needs an axial fan for heat dissipation. The axial fan can achieve the purpose of cooling and dehumidification by exhausting and circulating air, ensuring the normal operation of the computer case and extending its service life.

[0003] Existing high-volume axial flow fans used in chassis mainly consist of impellers, casings, motors, and other components. During use, the heat dissipation area inside the chassis is fixed. Due to the excessively high heat dissipation requirements of some chassis, the axial flow fans, when extracting airflow from the chassis, suffer from poor heat dissipation due to the small airflow volume. This leads to a continuous rise in temperature inside the chassis, making the machine prone to failure. Installing multiple axial flow fans inside the chassis reduces the internal space and increases additional costs. Furthermore, dust tends to accumulate inside the chassis after prolonged placement. When the axial flow fans are running, dust can easily clog the air inlets, reducing the lifespan of the device and decreasing the airflow volume, thus reducing the airflow extraction efficiency and hindering daily use. Summary of the Invention

[0004] Existing high-volume axial flow fans used in chassis mainly consist of impellers, casings, and motors. During operation, the heat dissipation area within the chassis is limited. Due to the high heat dissipation requirements of some chassis, the axial flow fans, with their small airflow, result in poor heat dissipation when drawing air from the chassis, leading to a continuous rise in internal temperature and potential machine malfunctions. Installing multiple axial flow fans reduces internal space and increases costs. Furthermore, dust accumulation after prolonged placement within the chassis can clog the fan inlets during operation, reducing the lifespan of the device and decreasing airflow efficiency, thus hindering daily use. This invention provides a high-volume axial flow fan for chassis applications, offering advantages such as increased airflow, improved extraction efficiency, and dust removal to prevent dust clogging of the inlets and reduced airflow.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-volume axial flow fan for a chassis, comprising: a shell, a mounting plate, a cover plate, an air inlet, a connector, an axial flow motor, a fixing ring, a shaft, fan blades, a groove, a fan head, a drive device, a drive motor, a screw, a push rod, a bottom rod, an internal threaded hole, a movable rod, a cleaning plate, a baffle, a dust removal device, a buckle, a first slot, a second slot, a first dustproof plate, a first through hole, a second dustproof plate, a second through hole, and a sliding groove.

[0006] The positions and connections of the above structures are as follows: A large-volume axial flow fan for a chassis includes a housing, a cover plate, an axial flow motor, a drive device, and a dust removal device. The top of the housing is provided with a cover plate, which is fixedly connected to the housing. An axial flow motor is provided inside the housing and is connected to an external power supply. Drive devices are provided on the front end and the left and right sides of the rear end of the axial flow motor. The drive devices are located at the four corners inside the housing and are fixedly connected to the housing. A dust removal device is provided on the top of the axial flow motor and is fixedly connected to the housing.

[0007] Preferably, the front and rear ends of the outer casing are provided with placement plates, which together form a groove-like structure with the front and rear ends of the outer casing. The top of the cover plate is provided with an air inlet, which is arc-shaped and penetrates through the interior of the cover plate. Connectors are provided at the four corners of the top of the cover plate, and the connectors are fixedly connected to the cover plate. The outer casing is used to protect the axial flow motor, drive device, and dustproof device. The cover plate is used to form a closed space with the outer casing to enhance the protective effect of the device. The air inlet is used to draw airflow under the action of the axial flow fan. The air inlet is arc-shaped to reduce the wind resistance encountered when drawing airflow. The connectors are used to connect and fix the cover plate and the outer casing. The groove-like structure formed by the placement plates and the front and rear ends of the outer casing facilitates the installation of the device in the chassis and ensures that the device can operate normally.

[0008] Preferably, the axial flow motor has a fixing ring at its bottom, which is fixedly connected to the axial flow motor. The axial flow motor is also fixedly connected to the inside of the housing via the fixing ring. The axial flow motor has a shaft at its top, which is movably connected to the axial flow motor. Several fan blades are fixedly connected to the shaft at its top, and a fan head is fixedly connected to the shaft at its top. The fan blades are fixedly connected to the shaft via the fan head. When the axial flow motor is turned on, it drives the shaft to rotate. The rotation of the shaft drives the fan blades and fan head to rotate, drawing airflow from the air inlet to ensure the normal operation of the device.

[0009] Preferably, the fan blades are designed with a relatively wide curved shape, and several grooves are provided at the top outer edge of the front and rear ends of the fan blades. The grooves extend from the top to the bottom of the fan blades and are designed with a semi-circular shape. When the axial motor drives the shaft to rotate, the fan blades rotate under the drive of the shaft. The grooves at the outer edge of the fan blades form a wave-like structure, which cuts the airflow drawn in during rotation, thereby reducing the additional resistance encountered by the axial fan when drawing airflow and improving the drawing efficiency of the device.

[0010] Preferably, the drive device has a drive motor inside, which is connected to an external power source. A screw is provided at the end of the drive motor away from the axial motor, and the screw is movably connected to the drive motor. A base rod is provided at the end of the screw away from the drive motor, and a push rod is provided at the end of the base rod away from the screw. The push rod is fixedly connected to the base rod. Both the base rod and the push rod have internal threaded holes at their ends near the screw. The push rod and the base rod are movably connected to the screw through the internal threaded holes. When the axial motor is running normally, the drive motor inside the drive device drives the screw to rotate under the power source. The rotation of the screw drives the base rod and the push rod to rotate. Furthermore, the rotation of the screw driven by the drive motor in the forward or reverse direction causes the base rod and the push rod to move to the left or right.

[0011] Preferably, a baffle is provided at the end of the push rod away from the axial flow motor. The baffle is fixedly connected to the push rod. When the baffle is closed, it forms a closed space with the outer shell. When the drive motor drives the screw to rotate forward, the screw rotation drives the bottom rod and the push rod to move away from the axial flow motor. The movement of the push rod and the bottom rod causes the baffle to move towards the end away from the axial flow motor, so that the outer shell no longer forms a closed structure. This increases the radial extraction path while axially extracting airflow, allowing the device to extract airflow axially and radially at the same time, increasing the air volume of the device and improving the extraction efficiency.

[0012] Preferably, a movable rod is provided at the top of the bottom rod, and the movable rod is fixedly connected to the bottom rod. A cleaning plate is provided at the top of the movable rod, and a cleaning layer is provided at both the top and bottom of the cleaning plate. The cleaning layer is made of polymer material, preferably fiber. When the bottom rod and push rod move, the movable rod and the cleaning plate also move in the direction of movement of the bottom rod and push rod. The cleaning layer is made of fiber, which can better adsorb dust. The cleaning plate is used to clean the dust on the outer surface of the dust removal device to ensure the normal operation of the device.

[0013] Preferably, the dust removal device has a first dustproof plate at the top and a second dustproof plate at the bottom. Buckles are located at the four corners of the outer surface of the dust removal device, each with a first and a second slot. The first slot is positioned on top of the second slot. The first and second dustproof plates are engaged with the buckles via the first and second slots, respectively. The outer surface of the first dustproof plate has a first through hole, and the outer surface of the second dustproof plate has a second through hole. The diameter of the first through hole is smaller than that of the second through hole, and the number of first through holes is greater than that of second through holes. The second dustproof plate, in addition to the first dustproof plate, blocks dust entering through the first through holes in the first dustproof plate. The smaller diameter of the first through hole facilitates dust blocking, and the greater number of first through holes increases the contact area of ​​the extracted airflow, making it easier for the user to operate.

[0014] Preferably, the second dustproof plate has sliding grooves on both the left and right sides of its top, which extend through the bottom of the second dustproof plate. The movable rod is located inside the sliding groove, and the cleaning plate is located between the first and second dustproof plates. When the bottom rod and push rod move, the movable rod and the cleaning plate also move in the direction of movement of the bottom rod and push rod. The movement of the cleaning plate cleans and adsorbs the dust in the first and second through holes inside the first and second dustproof plates, preventing residual dust from accumulating in the first and second through holes and causing blockage, reducing airflow and lowering the airflow extraction efficiency of the device. Beneficial effects

[0015] 1. This high-volume axial flow fan for chassis uses a fan blade with a relatively wide curved shape. Several grooves are provided on the outer edge of the front and rear ends of the fan blade, extending from the top to the bottom of the fan blade. The grooves are semi-circular. When the axial motor drives the shaft to rotate, the fan blade rotates under the drive of the shaft. The grooves on the outer edge of the fan blade form a wave-like structure, which cuts the airflow when rotating, thereby reducing the additional resistance encountered by the axial flow fan when drawing airflow and improving the extraction efficiency of the device.

[0016] 2. This high-volume axial flow fan for the chassis has a first dustproof plate at the top of the dust removal device, and a second dustproof plate at the bottom of the first dustproof plate. Buckles are located at the four corners of the outer surface of the dust removal device, each buckle containing a first and a second slot. The first slot is positioned on top of the second slot. The first and second dustproof plates are engaged with the buckles via the first and second slots, respectively. The outer surface of the first dustproof plate has a first through hole, and the outer surface of the second dustproof plate has a second through hole. The diameter of the first through hole is smaller than that of the second through hole, and the number of first through holes is greater than the number of second through holes. The first dustproof plate blocks and removes dust while the device extracts airflow. The second dustproof plate, based on the first dustproof plate, blocks dust entering through the first through hole inside the first dustproof plate. The diameter of the first through hole is smaller than that of the second through hole to facilitate dust blocking. The number of first through holes is greater than that of second through holes to increase the contact area of ​​the extracted airflow, preventing the extraction efficiency from decreasing due to fewer first through holes. It also prevents dust from entering the axial flow fan and reducing the service life of the axial flow fan. At the same time, dust accumulation can block the air inlet, reducing the size and volume of the air intake of the device, which is convenient for users.

[0017] 3. This high-volume axial flow fan for the chassis features sliding grooves on both the left and right sides of the top of the second dustproof plate, extending through the bottom of the second dustproof plate. A movable rod is positioned inside the sliding groove, and a cleaning plate is located between the first and second dustproof plates. When the bottom rod and push rod move, the movable rod and cleaning plate also move in the direction of movement of the bottom rod and push rod. The moving cleaning plate cleans and adsorbs dust from the first and second through holes inside the first and second dustproof plates, preventing residual dust from accumulating and clogging the first and second through holes, thus reducing airflow and the device's air extraction efficiency. The cleaning plate also cleans and adsorbs dust from the first and second dustproof plates in the opposite direction, preventing any unadsorbed dust from remaining. Users do not need to clean the device themselves in a short time, increasing the device's airflow while facilitating daily use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of a high-volume axial flow fan for a chassis according to the present invention;

[0019] Figure 2 This is a schematic diagram of a large-volume axial flow fan cover plate for a chassis according to the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of a high-volume axial flow fan for a chassis according to the present invention;

[0021] Figure 4 This is a schematic diagram of an axial motor structure for a large-volume axial fan used in a chassis according to the present invention;

[0022] Figure 5This is a schematic diagram of a high-volume axial flow fan drive device for a chassis according to the present invention;

[0023] Figure 6 This is a top view schematic diagram of a high-volume axial flow fan for a chassis according to the present invention;

[0024] Figure 7 This is a schematic diagram of a high-volume axial flow fan dust removal device for a chassis according to the present invention.

[0025] In the diagram: 1. Outer shell; 10. Placement plate; 2. Cover plate; 20. Air inlet; 21. Connector; 3. Axial flow motor; 30. Fixing ring; 31. Shaft; 32. Fan blade; 320. Groove; 33. Fan head; 4. Drive device; 40. Drive motor; 41. Screw; 42. Push rod; 420. Bottom rod; 421. Internal threaded hole; 43. Movable rod; 44. Cleaning plate; 45. Baffle; 5. Dust removal device; 50. Buckle; 500. First slot; 501. Second slot; 51. First dustproof plate; 510. First through hole; 52. Second dustproof plate; 520. Second through hole; 521. Slide groove. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0027] Please see Figure 1-7 A high-volume axial flow fan for a chassis includes a housing 1, a cover plate 2, an axial flow motor 3, a drive unit 4, and a dust removal device 5. The cover plate 2 is fixedly connected to the top of the housing 1. The axial flow motor 3 is installed inside the housing 1 and is connected to an external power supply. The drive unit 4 is installed on the front end and the left and right sides of the rear end of the axial flow motor 3. The drive unit 4 is located at the four corners inside the housing 1 and is fixedly connected to the housing 1. The dust removal device 5 is installed on the top of the axial flow motor 3 and is fixedly connected to the housing 1.

[0028] The front and rear ends of the outer casing 1 are provided with placement plates 10, which together with the front and rear ends of the outer casing 1 form a groove-like structure. The top of the cover plate 2 is provided with an air inlet 20, which is arc-shaped and penetrates the interior of the cover plate 2. Connectors 21 are provided at the four corners of the top of the cover plate 2, and the connectors 21 are fixedly connected to the cover plate 2. The outer casing 1 is used to protect the axial flow motor 3, the drive device 4 and the dustproof device. The cover plate 2 is used to form a closed space with the outer casing 1 to enhance the protection effect of the device. The air inlet 20 is used to draw airflow under the action of the axial flow fan. The air inlet 20 is arc-shaped to reduce the wind resistance when drawing airflow. The connectors 21 are used to connect and fix the cover plate 2 and the outer casing 1. The placement plate 10 and the front and rear ends of the outer casing 1 form a groove-like structure, which facilitates the installation of the device in the chassis and ensures that the device can operate normally.

[0029] A retaining ring 30 is provided at the bottom of the axial flow motor 3, and the retaining ring 30 is fixedly connected to the axial flow motor 3. The axial flow motor 3 is fixedly connected to the inside of the outer casing 1 through the retaining ring 30. A shaft 31 is provided at the top of the axial flow motor 3, and the shaft 31 is movably connected to the axial flow motor 3. Several fan blades 32 are provided at the top of the shaft 31, and the fan blades 32 are fixedly connected to the shaft 31. A fan head 33 is provided at the top of the shaft 31, and the fan blades 32 are fixedly connected to the shaft 31 through the fan head 33. When the axial flow motor 3 is turned on, it drives the shaft 31 to rotate. The rotation of the shaft 31 drives the fan blades 32 and the fan head 33 to rotate, drawing airflow from the air inlet 20 to ensure the normal operation of the device.

[0030] The fan blade 32 is designed with a relatively wide curved shape. Several grooves 320 are provided on the outer edge of the top surface of the front and rear ends of the fan blade 32. The grooves 320 penetrate from the top to the bottom of the fan blade 32. The grooves 320 are designed with a semi-circular shape. When the axial motor 3 drives the shaft 31 to rotate, the fan blade 32 rotates under the drive of the shaft 31. Several grooves 320 are provided on the outer edge of the fan blade 32 to form a wave-like structure. When rotating, the airflow is cut to reduce the additional resistance encountered by the axial fan when extracting airflow and improve the extraction efficiency of the device. Example 2

[0031] Please see Figure 1-6Further, based on Embodiment 1, the drive device 4 is internally equipped with a drive motor 40, which is connected to an external power source. A screw 41 is located at the end of the drive motor 40 furthest from the axial current motor 3, and the screw 41 is movably connected to the drive motor 40. A base rod 420 is located at the end of the screw 41 furthest from the drive motor 40, and a push rod 42 is located at the end of the base rod 420 furthest from the screw 41. The push rod 42 is fixedly connected to the base rod 420. Both the base rod 420 and the push rod 42 have internal threaded holes 421 at their ends near the screw 41. The push rod 42 and the base rod 420 pass through the internal threaded holes 421. 1 is movably connected to screw 41. When the axial motor 3 is running normally, the drive motor 40 inside the drive device 4 drives the screw 41 to rotate under the drive of the power supply. The rotation of the screw 41 drives the bottom rod 420 and push rod 42 to rotate. According to the forward and reverse rotation of the screw 41 driven by the drive motor 40, the bottom rod 420 and push rod 42 move to the left or right. The push rod 42, bottom rod 420 and inner thread hole 421 form a self-locking structure with the screw 41 to prevent the push rod 42 and bottom rod 420 from continuing to move on the screw 41 due to inertia when the drive motor 40 stops running.

[0032] A baffle 45 is provided at the end of the push rod 42 away from the axial flow motor 3. The baffle 45 is fixedly connected to the push rod 42. When the baffle 45 is closed, it forms a closed space with the outer shell 1. When the drive motor 40 drives the screw 41 to rotate forward, the screw 41 rotates forward and drives the bottom rod 420 and the push rod 42 to move away from the axial flow motor 3. The movement of the push rod 42 and the bottom rod 420 drives the baffle 45 to move away from the axial flow motor 3, so that the outer shell 1 no longer forms a closed structure. While axially extracting airflow, a radial extraction path is added, so that the device can simultaneously extract airflow axially and radially, increasing the air volume of the device and improving the extraction efficiency of the device.

[0033] A movable rod 43 is provided at the top of the base rod 420. The movable rod 43 is fixedly connected to the base rod 420. A cleaning plate 44 is provided at the top of the movable rod 43. A cleaning layer is provided at both the top and bottom of the cleaning plate 44. The cleaning layer is made of polymer material, preferably fiber. When the base rod 420 and the push rod 42 move, the movable rod 43 and the cleaning plate 44 also move in the direction of movement of the base rod 420 and the push rod 42. The cleaning layer is made of fiber, which can better adsorb dust. The cleaning plate 44 is used to clean the dust on the outer surface of the dust removal device 5 to ensure the normal operation of the device. Example 3

[0034] Please see Figure 1-7Further, based on Embodiment 2, the dust removal device 5 has a first dustproof plate 51 at its top and a second dustproof plate 52 at its bottom. Buckles 50 are located at the four corners of the outer surface of the dust removal device 5. Each buckle 50 has a first slot 500 and a second slot 501 inside. The first slot 500 is positioned at the top of the second slot 501. The first dustproof plate 51 and the second dustproof plate 52 are respectively engaged with the buckles 50 through the first slot 500 and the second slot 501. The outer surface of the first dustproof plate 51 has a first through hole 510, and the outer surface of the second dustproof plate 52 has a second through hole 520. The diameter of the first through hole 510 is smaller than that of the second through hole 520. The number of through holes 510 is greater than that of the second through hole 520. The first dustproof plate 51 blocks and removes dust while the device is extracting airflow. The second dustproof plate 52, based on the first dustproof plate 51, blocks dust entering through the first through hole 510 in the first dustproof plate 51. The diameter of the first through hole 510 is smaller than that of the second through hole 520 to facilitate dust blocking. The number of first through holes 510 is greater than that of second through holes 520 to increase the contact area of ​​the extracted airflow, preventing the extraction efficiency from decreasing due to fewer first through holes 510. It also prevents dust from entering the axial flow fan and reducing the service life of the axial flow fan. At the same time, dust accumulation can block the air inlet 20, reducing the size and volume of the air intake of the device, which is convenient for users.

[0035] The second dustproof plate 52 has sliding grooves 521 on both the left and right sides of its top, which extend through the bottom of the second dustproof plate 52. A movable rod 43 is located inside the sliding groove 521. A cleaning plate 44 is positioned between the first dustproof plate 51 and the second dustproof plate 52. When the bottom rod 420 and push rod 42 move, the movable rod 43 and the cleaning plate 44 also move in the direction of movement of the bottom rod 420 and push rod 42. The moving cleaning plate 44 cleans and absorbs dust in the first through holes 510 and the second through holes 520 inside the first dustproof plate 51 and the second dustproof plate 52, preventing residual dust from accumulating in the first through holes 510 and the second through holes 520 and causing further dust buildup. The blockage of hole 520 reduces the air volume and the efficiency of air extraction. After the device is used, the drive motor 40 drives the screw 41 to reverse. The reverse rotation of the screw 41 drives the bottom rod 420, push rod 42 and baffle 45 to move in the direction of axial motor 3, so that the outer shell 1 re-forms a closed space. The movable rod 43 and cleaning plate 44 move and are stored in the slide groove 521 along with the direction of the bottom rod 420. At the same time, the cleaning plate 44 cleans and adsorbs the dust in the opposite direction of the first dustproof plate 51 and the second dustproof plate 52, preventing the residue of dust that has not been adsorbed. Users do not need to clean the device themselves in a short time, which increases the air volume of the device and facilitates daily use.

[0036] Working principle: After the axial flow motor 3 is turned on, it drives the shaft 31 to rotate. The rotation of the shaft 31 drives the fan blades 32 and the fan head 33 to rotate, drawing airflow from the air inlet 20. The fan blades 32 rotate under the drive of the shaft 31. Several grooves 320 are provided on the outer surface edge of the fan blades 32 to form a wave-like structure. During rotation, they cut the drawn-in airflow, thereby reducing the additional resistance encountered by the axial flow fan when drawing airflow. The drive motor 40 inside the drive device 4 drives the screw 41 to rotate under the drive of the power supply. The rotation of the screw 41 drives the bottom rod 420 and the push rod 42 to rotate. The clockwise rotation of the screw 41 drives the bottom rod 420 and the push rod 42 to move away from the axial flow motor 3. The movement of the push rod 42 and the bottom rod 420 causes the baffle 45 to move away from the axial flow motor 3, so that the outer shell 1 no longer forms a closed structure. While axially drawing airflow, it increases the radial drawing path, allowing the device to axially draw airflow. Simultaneous intake and radial extraction of airflow increases the device's air volume and improves extraction efficiency. The diameter of the first through hole 510 is smaller than that of the second through hole 520, which facilitates dust blocking. The number of first through holes 510 is greater than that of second through holes 520, increasing the contact area of ​​the extracted airflow and preventing a decrease in extraction efficiency due to fewer first through holes 510. When the bottom rod 420 and push rod 42 move, the movable rod 43 and cleaning plate 44 also move in the direction of movement of the bottom rod 420 and push rod 42. The moving cleaning plate 44 cleans and adsorbs the dust in the first through holes 510 and second through holes 520 inside the first dustproof plate 51 and the second dustproof plate 52, preventing residual dust from accumulating in the first through holes 510 and second through holes 520 and causing blockage, reducing airflow and thus reducing the device's extraction efficiency. Users do not need to clean the device themselves in a short time, increasing the device's airflow and facilitating daily use.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-volume axial flow fan for a chassis, comprising a housing (1), a cover plate (2), an axial flow motor (3), a drive unit (4), and a dust removal device (5), characterized in that: The top of the outer shell (1) is provided with a cover plate (2), which is fixedly connected to the outer shell (1). An axial flow motor (3) is provided inside the outer shell (1). A drive device (4) is provided on the front end and the left and right sides of the rear end of the axial flow motor (3). The drive device (4) is located inside the outer shell (1) and is fixedly connected to the outer shell (1). A dust removal device (5) is provided on the top of the axial flow motor (3) and is fixedly connected to the outer shell (1). The drive device (4) is equipped with a drive motor (40). A screw (41) is provided at the end of the drive motor (40) away from the axial motor (3). The drive motor (40) can drive the screw (41) to rotate. A bottom rod (420) is provided at the end of the screw (41) away from the drive motor (40). A push rod (42) is provided at the end of the bottom rod (420) away from the screw (41). The push rod (42) is fixedly connected to the bottom rod (420). Both the bottom rod (420) and the push rod (42) are provided with an internal thread hole (421) at the end near the screw (41). The push rod (42) and the bottom rod (420) are movably connected to the screw (41) through the internal thread hole (421). A baffle (45) is provided at the end of the push rod (42) away from the axial flow motor (3). The baffle (45) is fixedly connected to the push rod (42). When the baffle (45) is closed, it forms a closed space with the outer shell (1). The bottom rod (420) is provided with a movable rod (43) at the top, the movable rod (43) is fixedly connected to the bottom rod (420), and a cleaning plate (44) is provided at the top of the movable rod (43). The cleaning plate (44) is provided with a cleaning layer at both the top and bottom. The dust removal device (5) includes a first dustproof plate (51) disposed on the top, and a second dustproof plate (52) disposed at the bottom of the first dustproof plate (51). The second dustproof plate (52) has a sliding groove (521) on both the left and right sides of the top. The sliding groove (521) passes through the bottom of the second dustproof plate (52). The movable rod (43) is set inside the sliding groove (521). The cleaning plate (44) is set between the first dustproof plate (51) and the second dustproof plate (52).

2. The high-volume axial flow fan for a chassis according to claim 1, characterized in that: The front and rear ends of the outer shell (1) are provided with placement plates (10), and the placement plates (10) and the front and rear ends of the outer shell (1) form a groove structure. The top of the cover plate (2) is provided with an air inlet (20), which is arc-shaped and penetrates the interior of the cover plate (2). The four corners of the top of the cover plate (2) are provided with connectors (21), which are fixedly connected to the cover plate (2).

3. A high-volume axial flow fan for a chassis according to claim 1, characterized in that: The axial motor (3) has a fixing ring (30) at the bottom, which is fixedly connected to the axial motor (3). The axial motor (3) is fixedly connected to the inside of the outer shell (1) through the fixing ring (30). The axial motor (3) has a shaft (31) at the top, which can drive the shaft (31) to rotate. The shaft (31) has several fan blades (32) at the top, which are fixedly connected to the shaft (31). The shaft (31) has a fan head (33) at the top, which is fixedly connected to the shaft (31) through the fan head (33).

4. A high-volume axial flow fan for a chassis according to claim 3, characterized in that: The fan blade (32) is curved, and several grooves (320) are provided at the outer edge of the front and rear ends of the fan blade (32). The grooves (320) penetrate from the top to the bottom of the fan blade (32), and the grooves (320) are semi-circular.

5. A high-volume axial flow fan for a chassis according to claim 1, characterized in that: The dust removal device (5) has four corners of its outer surface with buckles (50). The buckles (50) have a first slot (500) and a second slot (501) inside. The first slot (500) is located on top of the second slot (501). The first dustproof plate (51) and the second dustproof plate (52) are respectively engaged with the buckles (50) through the first slot (500) and the second slot (501). The outer surface of the first dustproof plate (51) has a first through hole (510), and the outer surface of the second dustproof plate (52) has a second through hole (520). The diameter of the first through hole (510) is smaller than that of the second through hole (520), and the number of first through holes (510) is greater than that of second through holes (520).

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