An alternator

Abstract

The application provides an alternator, which comprises a motor shell, a stator assembly arranged in the motor shell, a rotor assembly arranged in the stator assembly and connected with the motor shell, a rectification assembly arranged on one side of the motor shell, a heat dissipation fan arranged on the other side of the motor shell, and a middle shaft for connecting the rectification assembly, the rotor assembly and the heat dissipation fan, characterized in that the motor shell is symmetrically provided with a rear end cover and a front end cover on both sides, respectively, and a belt transmission wheel is fixedly arranged at one end of the middle shaft and extends to the outside of the front end cover. The filter mechanism is arranged, so that the particulate matter is blocked on the surface of the annular blocking net when the heat dissipation fan rotates to send the external air into the motor shell, and the particulate matter blocked on the annular blocking net does not completely cover and accumulate on the surface due to the annular structure of the annular blocking net, so that the heat dissipation fan can interact with the external air to the maximum extent.

Description

Technical Field

[0001] This invention relates to the field of generators, and more specifically, to an AC generator. Background Technology

[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. Existing generators are usually connected by a front cover and a rear cover. The rotor, stator, central shaft and other components are all located between the front cover and the rear cover. The central shaft passes through the front cover and a cooling fan is installed at the front cover. An air inlet is opened on the front cover. However, the above technical solution has the following defects.

[0003] When the cooling fan rotates and sends air into the generator through the air inlet for cooling, particles floating with the air can easily enter the cooling fan through the air inlet. This can cause the fan blades to collide with the particles, resulting in some fragments entering the fan and compromising the protection of the fan blades.

[0004] Therefore, we have made improvements to this and proposed an alternating current generator. Summary of the Invention

[0005] The purpose of this invention is to address the problem that during the cooling process of a radiator fan, particulate matter can easily enter the motor along with the air, which can affect the normal operation of the generator and is detrimental to the protection of the fan blades.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] An alternator includes a motor housing, a stator assembly disposed inside the motor housing, a rotor assembly disposed inside the stator assembly and connected to the motor housing, a rectifier assembly disposed on one side inside the motor housing, a cooling fan disposed on the other side inside the motor housing, and a central shaft for connecting to the rectifier assembly, the rotor assembly and the cooling fan. The motor housing has a rear end cover and a front end cover symmetrically disposed on both sides. One end of the central shaft extends to the outside of the front end cover and is fixedly provided with a belt drive pulley.

[0008] The front cover is fixedly connected to a filter mechanism that is fixedly engaged with the inner side of the belt drive pulley on one side, and also includes;

[0009] A flow-guiding mechanism, which is sleeved on the outside of the filter mechanism and connected to the inside of the filter mechanism;

[0010] The flow guiding mechanism includes a first side cover and a second side cover located on both sides of the filter mechanism. Sealing slide rails are coaxially installed on opposite sides of the first side cover and the second side cover. A flow guiding cavity is formed on one side inside the first side cover and the second side cover. A drain trough is formed on one side inside the first side cover and the second side cover near the flow guiding cavity. A material guiding slope is formed inside the drain trough.

[0011] An air guide mechanism is arranged in a ring on the surface of the first and second side covers and is connected to the air guide cavity to realize the exchange and transportation of air.

[0012] The cleaning mechanism is located between the two sets of air guiding mechanisms and outside the air diversion mechanism to achieve the discharge of dust after cleaning.

[0013] As a preferred technical solution of this application, the filtration mechanism includes an air supply sleeve that is fixedly fitted with the front cover and communicates with its interior, and an external positioning collar that is fixedly sleeved on the surface of the air supply sleeve.

[0014] The outer positioning collar has a trapezoidal ventilation groove inside that communicates with the air supply sleeve, and an annular barrier net for blocking particles is fixed inside the trapezoidal ventilation groove.

[0015] As a preferred technical solution of this application, the outer positioning collar is provided with symmetrical sealing grooves on both sides that are adapted to the sealing slide rail, and the outer positioning collar is movably assembled with the sealing slide rail and the sealing groove through the sliding cooperation of the sealing slide rail and the sealing groove, and the outer side of the outer positioning collar is tightly attached to the inner wall of the outer positioning collar.

[0016] As a preferred technical solution of this application, the number of air guiding mechanisms is several, and the several air guiding mechanisms are divided into two groups on an average basis. Each group of air guiding mechanisms is respectively disposed on the surface of the corresponding first side cover and second side cover.

[0017] The air guiding mechanism includes an air guiding hood fixed to the surface of the air diversion mechanism. The interior of the air guiding hood is formed from the outside to the inside as follows: an air gathering inclined groove wall, an air supply groove wall, a blocking groove wall, and an air inlet groove wall.

[0018] As a preferred technical solution of this application, the cleaning mechanism includes a dust collection shell disposed on opposite sides of two sets of air guiding mechanisms. The dust collection shell has a dust collection groove inside, and a plurality of equally spaced discharge nozzles are provided on the outer surface of the dust collection shell. The discharge nozzles are provided with sealing plugs in their internal threads.

[0019] As a preferred technical solution of this application, the cleaning mechanism further includes two relatively parallel inner sealing rings, which are embedded in the connection between the dust collection shell and the first side cover and the second side cover. The two sides of the dust collection shell have mounting grooves that are adapted to one side of the air guide cover.

[0020] The dust collection shell has threaded bolt assemblies on both sides of its surface, which are connected to the air guide mechanism to secure the first and second side covers.

[0021] As a preferred technical solution of this application, the drainage mechanism further includes a sealing and fastening assembly, which specifically includes a first sealing ring and a second sealing ring arranged coaxially.

[0022] The first sealing ring and the second sealing ring are together embedded on opposite sides of the first side cover and the second side cover.

[0023] As a preferred technical solution of this application, the drainage mechanism further includes a cleaning brush that is fixed together to the inner sides of the first side cover and the second side cover, and the cleaning brush is in close contact with the surface of the annular barrier net.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] In the scheme of this application:

[0026] 1. Through the set filtration mechanism, while the cooling fan rotates and sends outside air into the motor housing, it can block particulate matter, blocking it on the surface of the ring-shaped filter mesh. Due to the ring structure of the filter mesh, the particulate matter blocked on it will not completely cover and accumulate on its surface, ensuring that the cooling fan can achieve the maximum interaction with the outside air.

[0027] 2. Through the set air guide mechanism, when air is sent into the interior of the air guide mechanism, the particles can be blocked at the front end through the cooperation of the air gathering inclined groove wall and the air supply groove wall. This is conducive to better cooperation with the ring barrier net to achieve the blocking of particles, ensuring the blocking effect of the device, which is conducive to better heat dissipation of the cooling fan, and effectively reducing the problem of particles entering the motor housing and colliding with the cooling fan.

[0028] 3. Through the cleaning mechanism, the rotating flow guide mechanism on the surface of the filter mechanism can drive the cleaning brush to slide on the surface of the annular barrier mesh, so that it can rotate and clean the particles on its surface. In addition, with multiple equally spaced discharge nozzles, the cleaned particles can be discharged through the continuously rotating dust collection shell, avoiding the problem of inconvenience in cleaning the inside.

[0029] 4. Through the designed airflow cavity and sewage discharge trough, external air is guided into the trapezoidal ventilation trough and air supply sleeve, while the particles are well guided during the cleaning process, so that they can fall into the sewage discharge trough, which facilitates the cleaning mechanism and makes it easier for the staff to operate. Attached Figure Description

[0030] Figure 1 A schematic diagram of the structure of the alternator provided in this application;

[0031] Figure 2A partial disassembly diagram of the alternator provided in this application;

[0032] Figure 3 A cross-sectional structural schematic diagram of the filter mechanism, air diversion mechanism, air guiding mechanism and cleaning mechanism of the alternator provided in this application;

[0033] Figure 4 A schematic diagram of the air guide mechanism of the AC generator provided in this application;

[0034] Figure 5 A cross-sectional structural schematic diagram of the AC generator provided in this application;

[0035] Figure 6 A schematic diagram of the cleaning mechanism structure of the alternator provided in this application;

[0036] Figure 7 The alternator provided in this application Figure 3 Enlarged structural diagram at point A in the middle.

[0037] The image shows:

[0038] 10. Motor housing; 101. Stator assembly; 102. Rotor assembly; 103. Rectifier assembly; 104. Cooling fan; 105. Central shaft; 106. Rear end cover; 107. Front end cover; 108. Belt drive pulley;

[0039] 20. Filter mechanism; 201. Air supply sleeve; 202. External positioning collar; 203. Trapezoidal ventilation slot; 204. Annular barrier net; 205. Sealing groove;

[0040] 30. Drainage mechanism; 301. First side cover; 302. Second side cover; 303. Sealing slide rail; 304. Drainage cavity; 305. Sewage discharge trough; 306. Material guiding slope;

[0041] 310. First sealing ring; 311. Second sealing ring;

[0042] 320. Clean the brush;

[0043] 40. Air guide mechanism; 401. Air guide hood; 402. Air concentrator inclined slot wall; 403. Air supply slot wall; 404. Barrier slot wall; 405. Air inlet slot wall;

[0044] 50. Cleaning mechanism; 501. Dust collection shell; 502. Dust collection trough; 503. Discharge nozzle; 504. Sealing plug; 505. Inner sealing ring; 506. Mounting groove surface; 507. Bolt assembly. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0046] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0047] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] like Figures 1-7 As shown, this embodiment proposes an alternator, including a motor housing 10, a stator assembly 101 disposed inside the motor housing 10, a rotor assembly 102 disposed inside the stator assembly 101 and connected to the motor housing 10, a rectifier assembly 103 disposed on one side inside the motor housing 10, a cooling fan 104 disposed on the other side inside the motor housing 10, and a central shaft 105 for connecting with the rectifier assembly 103, the rotor assembly 102 and the cooling fan 104. A rear end cover 106 and a front end cover 107 are symmetrically provided on both sides of the motor housing 10. One end of the central shaft 105 extends to the outside of the front end cover 107 and is fixedly provided with a belt drive pulley 108. The belt drive pulley 108 is used to connect with an external transmission assembly to achieve this.

[0051] Among them, the front cover 107 is fixedly connected to a filter mechanism 20 that is fixedly engaged with the inner side of the belt drive wheel 108, and also includes a flow diversion mechanism 30, an air guiding mechanism 40 and a cleaning mechanism 50.

[0052] The filter mechanism 20 includes an air supply sleeve 201 that is fixedly fitted to and communicates with the front cover 107, and an external positioning collar 202 that is fixedly sleeved on the surface of the air supply sleeve 201.

[0053] The outer positioning collar 202 has a trapezoidal ventilation groove 203 that communicates with the air supply sleeve 201. The trapezoidal ventilation groove 203 has an annular barrier net 204 that blocks particles. The air supply sleeve 201 is connected to the interior of the outer positioning collar 202, so that the air supplied into the trapezoidal ventilation groove 203 can be sent into the air supply sleeve 201 and finally into the interior of the motor housing 10, thereby achieving effective heat dissipation inside the motor housing 10.

[0054] Specifically, when outside air passes through the trapezoidal ventilation slot 203 and the air supply sleeve 201, the annular barrier net 204 can block particles and other debris in the air, improving the cleanliness of the air entering the motor housing 10. This avoids the problem of particles entering the motor housing 10 and colliding with the cooling fan 104, which would be detrimental to the protection of the cooling fan 104. Furthermore, the annular structure of the annular barrier net 204 reduces the possibility of particles adhering to it after being blocked, thereby maximizing the ventilation effect of the annular barrier net 204, which in turn facilitates better rotation and heat dissipation of the cooling fan 104.

[0055] The flow diversion mechanism 30 is sleeved on the outside of the filter mechanism 20 and connected to the inside of the filter mechanism 20.

[0056] The flow guiding mechanism 30 includes a first side cover 301 and a second side cover 302 disposed on both sides of the filter mechanism 20. Sealing slide rails 303 are coaxially mounted on opposite sides of the first side cover 301 and the second side cover 302. A flow guiding cavity 304 is formed on one side inside the first side cover 301 and the second side cover 302. A sewage discharge trough 305 is formed on one side inside the first side cover 301 and the second side cover 302 near the flow guiding cavity 304. A material guiding slope 306 is formed inside the sewage discharge trough 305.

[0057] The outer positioning collar 202 has symmetrical sealing grooves 205 on both sides that are adapted to the sealing slide rail 303. The outer positioning collar 202 is movably assembled with the sealing slide rail 303 and the sealing groove 205 through the sliding fit between the sealing slide rail 303 and the sealing groove 205. This allows the first side cover 301 and the second side cover 302 to rotate stably on the surface of the outer positioning collar 202 together. At the same time, it can improve the connection strength between the first side cover 301 and the second side cover 302 and the outer positioning collar 202, so that they cannot loosen. The outer side of the outer positioning collar 202 is in close contact with the inner wall of the first side cover 301 and the second side cover 302. When the motor housing 10 interacts with the outside air, it can improve the sealing of the contact surface between the first side cover 301 and the second side cover 302 and the outer positioning collar 202, so that air can be better introduced into the motor housing 10.

[0058] The drainage mechanism 30 also includes a sealing and fastening assembly, which specifically includes a first sealing ring 310 and a second sealing ring 311 arranged coaxially.

[0059] The first sealing ring 310 and the second sealing ring 311 are jointly embedded on the opposite sides of the first side cover 301 and the second side cover 302. The sealing performance of the opposite sides of the first side cover 301 and the second side cover 302 is improved by setting the first sealing ring 310 and the second sealing ring 311, so that the fit is better.

[0060] The drainage mechanism 30 also includes a cleaning brush 320 that is fixed to the inside of the first side cover 301 and the second side cover 302. The cleaning brush 320 is in close contact with the surface of the annular barrier net 204.

[0061] Specifically, by rotating the first side cover 301 and the second side cover 302 on the surface of the outer positioning collar 202, the cleaning brush 320 on them can rotate in a circle. Since the cleaning brush 320 is in close contact with the surface of the annular barrier net 204, the particles on the surface of the annular barrier net 204 can be cleaned by rotating in a circle. The cleaned particles will fall to the bottom of the first side cover 301 and the second side cover 302 under the action of gravity and form an agglomeration, which is convenient for subsequent cleaning operations.

[0062] The air guide mechanism 40 is arranged in a ring on the surface of the first side cover 301 and the second side cover 302 and is connected to the air guide cavity 304 to realize the exchange and transportation of air.

[0063] The number of air guiding mechanisms 40 is several, and the several air guiding mechanisms 40 are divided into two groups on average. Each group of air guiding mechanisms 40 is respectively disposed on the surface of the corresponding first side cover 301 and second side cover 302.

[0064] The air guiding mechanism 40 includes an air guiding hood 401 fixed to the surface of the air diversion mechanism 30. The air guiding hood 401 has an air gathering inclined groove wall 402, an air supply groove wall 403, a barrier groove wall 404 and an air inlet groove wall 405 formed sequentially from the outside to the inside.

[0065] The air guiding cavity 304 and the sewage discharge trough 305 opened in the first side cover 301 and the second side cover 302 are corresponding to the external air guide cover 401, so that the air can be better guided and the particles can be discharged.

[0066] Specifically, by setting the air guide shroud 401, during the rotation and heat dissipation process of the cooling fan 104, the air can be guided by the air-gathering inclined groove wall 402 to better enter the interior of the air guide shroud 401. Furthermore, by setting the angle of the blocking groove wall 404 and the air inlet groove wall 405, the air guide shroud 401 can block particulate matter to the greatest extent possible when conveying air, regardless of the angle of the air guide shroud 401, reducing the possibility of it entering the interior of the first side cover 301 and the second side cover 302, which is conducive to better particulate blocking by the annular barrier net 204.

[0067] The cleaning mechanism 50 is located between the two sets of air guiding mechanisms 40 and outside the flow diversion mechanism 30 to realize the discharge of dust after cleaning.

[0068] The cleaning mechanism 50 includes a dust collection shell 501 located on opposite sides of the two sets of air guiding mechanisms 40. The dust collection shell 501 has a dust collection groove 502 inside. The dust collection groove 502 is annularly opened inside and corresponds to the annular barrier net 204, so that it can better collect the particles falling from the drain outlet 305 when it rotates. The outer surface of the dust collection shell 501 is provided with multiple equally spaced discharge nozzles 503. The discharge nozzles 503 are provided with sealing plugs 504 in the internal threads.

[0069] When the first side cover 301 and the second side cover 302 rotate on the surface of the outer positioning collar 202, the cleaned particles will be placed at the bottom of the first side cover 301 and the second side cover 302. Thus, by continuously rotating, the particles can fall into the corresponding dust collection groove 502. By pulling out the sealing plug 504 in the dust collection groove 502, the particles can be better discharged to the outside, thereby cleaning the internal particles and making the cleaning effect better.

[0070] Furthermore, when cleaning the particles on the annular barrier net 204, the guide slope 306 allows the falling particles to fall into the corresponding sewage discharge trough 305 better when it is at its lowest point, thus achieving the collection of particles in the dust collection trough 502 and improving the sewage discharge effect of the motor.

[0071] The cleaning mechanism 50 also includes two relatively parallel inner sealing rings 505. The two inner sealing rings 505 are embedded in the connection between the dust collection shell 501 and the first side cover 301 and the second side cover 302. The dust collection shell 501 has mounting grooves 506 on both sides that are adapted to one side of the air guide cover 401.

[0072] Among them, both sides of the surface of the dust collection shell 501 are threaded with bolt assemblies 507 that are connected to the air guide mechanism 40 to connect and fasten the first side cover 301 and the second side cover 302.

[0073] By setting the mounting groove 506, the cleaning mechanism will not shift to the left or right when it is installed on the outside of the diversion mechanism 30, so that it can fit better with the inner sealing ring 505 and the diversion mechanism 30, thereby ensuring the air sealing effect while effectively cleaning and recycling particles.

[0074] During the installation of the generator, the air supply sleeve 201 is fixed to one side of the front cover 107 and fixedly engaged with the driven wheel 108. At this time, the central shaft 105 is placed inside the air supply sleeve 201 and can rotate freely. The external positioning collar 202 is fixed to the surface of the air supply sleeve 201 and is connected to its interior through the trapezoidal ventilation groove 203.

[0075] Then, the dust collection shell 501 inside the cleaning mechanism 50 is embedded in the middle of the outer side of the external positioning collar 202 through the inner sealing rubber ring 505, and a sealing connection is formed between the first side cover 301 and the second side cover 302 through the inner sealing rubber ring 505. The first side cover 301 and the second side cover 302 are installed on both sides of the external positioning collar 202 through the sealing slide rail 303.

[0076] The sealing slide rails on the first side cover 301 and the second side cover 302 are engaged with the interior of the corresponding sealing slide groove 205, and the joint is sealed by the first sealing rubber ring 310 and the second sealing rubber ring 311. At the same time, the top of the first side cover 301 and the second side cover 302 is sealed with the dust collection shell 501 by the setting of the inner sealing rubber ring 505, and the first sealing rubber ring 311 and the second sealing rubber ring 312 are sealed with the first side cover 301 and the second side cover 302, ensuring that it can better interact with the outside air.

[0077] After assembly, the mounting groove 506 is set so that it can abut against the air guide hoods 401 on both sides. Then, the bolt assembly 507 is rotated to form a connection between the dust collection shell 501 and the air guide hood 401, thereby ensuring the stability of the connection between the various mechanisms after assembly.

[0078] Specifically, during operation, the belt drive pulley 108 drives the cooling fan 104 to rotate via the central shaft 105, which draws external air into the air guide shroud 401 and sends it into the motor housing 10 through the air guide cavity 304, trapezoidal ventilation slot 203 and air supply sleeve 201, thus forming heat dissipation for the interior.

[0079] During the airflow process, the air guide cover 401 can block the particles once, and after the air enters the dust collection tank 502, the annular barrier net 204 can block the particles a second time, thereby preventing the particles from colliding with the cooling fan 104 and falling into the motor housing 10.

[0080] When it is necessary to clean the particles on the surface of the annular barrier net 204, the cleaning mechanism 50 is rotated on the surface of the first side cover 301 and the second side cover 302, which drives the cleaning brush 302 on it to rotate on the surface of the annular barrier net 204 to clean the particles. The sealing plug 504 in the discharge nozzle 503 is then pulled out, so that the cleaned particles can be discharged to the outside, thereby ensuring the blocking effect of the annular barrier net 204, reducing the need for disassembly and cleaning of the generator, and making it easier for staff to use.

[0081] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. An alternator, comprising a motor housing (10), a stator assembly (101) disposed inside the motor housing (10), a rotor assembly (102) disposed inside the stator assembly (101) and connected to the motor housing (10), a rectifier assembly (103) disposed on one side inside the motor housing (10), a cooling fan (104) disposed on the other side inside the motor housing (10), and a central shaft (105) for connecting to the rectifier assembly (103), the rotor assembly (102) and the cooling fan (104), characterized in that, The motor housing (10) is symmetrically provided with a rear end cover (106) and a front end cover (107) on both sides respectively, and a belt drive pulley (108) is fixedly provided on one end of the central shaft (105) to the outside of the front end cover (107). A filter mechanism (20) is fixedly connected to one side of the front cover (107) and is fixedly engaged with the inner side of the belt drive pulley (108). Also includes: A flow-guiding mechanism (30) is sleeved on the outside of the filter mechanism (20) and connected to the inside of the filter mechanism (20); Air guide mechanism (40) is arranged in a ring on the surface of the first side cover (301) and the second side cover (302) and is connected to the air guide cavity (304) to realize the exchange and transportation of air; The cleaning mechanism (50) is located between the two sets of air guiding mechanisms (40) and outside the diversion mechanism (30) to realize the discharge of dust after cleaning; The drainage mechanism (30) includes a first side cover (301) and a second side cover (302) disposed on both sides of the filter mechanism (20); The filtration mechanism (20) includes an air supply sleeve (201) that is fixedly fitted to and communicates with the front end cover (107), and an external positioning collar (202) that is fixedly fitted on the surface of the air supply sleeve (201). The outer positioning collar (202) has a trapezoidal ventilation groove (203) that communicates with the air supply sleeve (201), and an annular barrier net (204) for blocking particles is fixed inside the trapezoidal ventilation groove (203). The number of air guiding mechanisms (40) is several, and the several air guiding mechanisms (40) are divided into two groups on an average basis. Each group of air guiding mechanisms (40) is respectively provided on the surface of the corresponding first side cover (301) and second side cover (302). The air guiding mechanism (40) includes an air guiding hood (401) fixed to the surface of the air diversion mechanism (30). The interior of the air guiding hood (401) is formed from the outside to the inside as follows: an air gathering inclined groove wall (402), an air supply groove wall (403), a barrier groove wall (404), and an air inlet groove wall (405). When the cooling fan (104) is rotating to dissipate heat, air is guided into the interior of the air guide hood (401) through the wind-gathering inclined groove wall (402). By setting the angle of the blocking groove wall (404) and the air inlet groove wall (405), each air guide hood (401) at different angles can achieve the blocking of particulate matter when conveying air.

2. An AC generator according to claim 1, characterized in that: Sealing slide rails (303) are coaxially mounted on opposite sides of the first side cover (301) and the second side cover (302). A flow guiding cavity (304) is formed on one side inside the first side cover (301) and the second side cover (302). A drain trough (305) is formed on one side inside the first side cover (301) and the second side cover (302) near the flow guiding cavity (304). A material guiding slope (306) is formed inside the drain trough (305). The air supply sleeve (201) is fixed to one side of the front cover (107) and fixedly engaged with the driven wheel (108). At this time, the central shaft (105) is placed inside the air supply sleeve (201) and can rotate freely. The external positioning collar (202) is fixed to the surface of the air supply sleeve (201) and is connected to its interior through the trapezoidal ventilation groove (203).

3. An AC generator according to claim 2, characterized in that, The outer positioning collar (202) has symmetrical sealing grooves (205) on both sides that are adapted to the sealing slide rail (303). The outer positioning collar (202) is movably assembled with the sealing slide rail (303) and the sealing groove (205) through the sliding fit. The outer side of the outer positioning collar (202) is in close contact with the inner wall of the first side cover (301) and the second side cover (302). The sealing slide rails on the first side cover (301) and the second side cover (302) engage with the interior of the corresponding sealing slide groove (205), and the sealing assembly at the splice is achieved by the first sealing rubber ring (310) and the second sealing rubber ring (311). The tops of the first side cover (301) and the second side cover (302) are sealed to the dust collection shell (501) by the setting of the inner sealing ring (505).

4. An AC generator according to claim 3, characterized in that, The cleaning mechanism (50) includes a dust collection shell (501) located on opposite sides of the two sets of air guiding mechanisms (40). The dust collection shell (501) has a dust collection groove (502) inside. The outer surface of the dust collection shell (501) has a plurality of equally spaced discharge nozzles (503). The discharge nozzles (503) have internal threads with sealing plugs (504). When cleaning the particles on the annular barrier net (204), the falling particles can fall into the corresponding sewage tank (305) when the guide slope (306) is at its lowest point.

5. An AC generator according to claim 4, characterized in that, The cleaning mechanism (50) also includes two relatively parallel inner sealing rings (505), which are embedded in the connection between the dust collection shell (501) and the first side cover (301) and the second side cover (302). The dust collection shell (501) has mounting grooves (506) on both sides that are adapted to one side of the air guide cover (401). By installing the groove surface (506), the cleaning mechanism will not shift to the left or right when it is installed on the outside of the diversion mechanism (30); The dust collection shell (501) has two threads on both sides of its surface, which are connected to the air guide mechanism (40) to fasten the first side cover (301) and the second side cover (302).

6. An AC generator according to claim 1, characterized in that, The drainage mechanism (30) also includes a sealing fastening assembly, which specifically includes a first sealing ring (310) and a second sealing ring (311) arranged coaxially. The first sealing ring (310) and the second sealing ring (311) are together embedded on the opposite sides of the first side cover (301) and the second side cover (302).

7. An AC generator according to claim 2, characterized in that, The drainage mechanism (30) also includes a cleaning brush (320) that is fixed together to the inside of the first side cover (301) and the second side cover (302), and the cleaning brush (320) is in close contact with the surface of the annular barrier net (204); The surface rotation cleaning mechanism (50) of the first side cover (301) and the second side cover (302) drives the cleaning brush (320) on it to rotate on the surface of the annular barrier net (204) to clean the particles on it.

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