Electric machine with sandwiched air channel cooling

Abstract

This invention relates to the field of motor technology, specifically to a motor with a sandwich-type air duct cooling system. The motor includes a housing mechanism, an exhaust mechanism installed at one end of the housing mechanism, an intake mechanism installed at the other end of the housing mechanism, multiple sets of flow channel dust removal mechanisms installed outside the housing mechanism, and an auxiliary mechanism installed on the housing mechanism. The housing mechanism includes an assembly shell. By optimizing the motor housing with the assembled stator and the two covers, multiple evenly distributed ventilation ducts are opened on the inner walls of the motor housing and the two covers. As the impeller inside the rear cover is driven by the rotor and rotates at high speed, air is filtered through multiple filters and then enters the inner cavity of the rear cover. The finally drawn-in airflow undergoes efficient and high-flow internal circulation along the optimized air ducts, facilitating efficient heat dissipation of the motor's internal components. As the rotor and impeller reverse direction, the internal airflow of the motor is reversed, thereby achieving dynamic heat dissipation of the motor's internal cavity.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to a motor with a sandwiched air duct cooling system. Background Technology

[0002] A motor with a sandwich-type cooling duct is a high-speed motor that integrates a dedicated cooling duct into its motor structure. Its core feature is that it achieves efficient cooling of key heat-generating components (such as the front and rear bearings) through a sandwich-type cooling duct design.

[0003] In actual use, existing motors with sandwiched air duct cooling systems will carry away dirt from the environment as the airflow enters the motor duct. The dirt will then stick to the inner wall of the duct. As the amount of dirt accumulates, the heat dissipation efficiency of the motor will decrease. In severe cases, it will increase the load on the motor. As the motor heats up, local windings inside the motor will be damaged.

[0004] In view of this, a motor with a sandwiched air duct cooling system was designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted in this invention is as follows: A motor with a sandwich-type air duct cooling system includes a housing mechanism, an exhaust mechanism installed at one end of the housing mechanism, an intake mechanism installed at the other end of the housing mechanism, multiple sets of flow channel dust removal mechanisms installed outside the housing mechanism, and an auxiliary mechanism installed on the housing mechanism. The housing mechanism includes an assembly shell, the inner wall of which has multiple evenly distributed guide air ducts, and the outer wall of which has fan-shaped slots communicating with the guide air ducts. A protective shell is installed outside the assembly shell. The flow channel dust removal mechanism includes components installed on the fan... The fan-shaped outer cover is located outside the slot, and a cover plate is provided on the outside of the fan-shaped outer cover. A dust collection hood is installed on the inside of the cover plate. A baffle is installed on the inside of the dust collection hood. A circular filter screen is installed in the holes in the outer wall of the dust collection hood. A traction rod is movably installed inside the dust collection hood and the baffle. A beam is installed at the inner end of the traction rod. An inclined plate is installed at one end of the beam, and a second filter pad and a first filter pad are installed at the other end of the beam. The exhaust mechanism includes a front cover installed at one end of the assembly housing. The air inlet mechanism includes a rear cover installed at the other end of the assembly housing.

[0007] In a preferred embodiment, the present invention can be further configured as follows: two clamping plates are installed on the outside of the assembly housing, and bearings are installed inside the clamping plates. Limiting plates are installed inside the two clamping plates, and two symmetrically distributed first pads are fixedly installed at the bottom of both ends of the assembly housing. The limiting plate has a sliding track inside.

[0008] In a preferred embodiment, the present invention may be further configured as follows: the flow channel dust removal mechanism further includes a pad block fixedly installed outside the assembly housing; a first bolt is inserted into the plate segment outside the fan-shaped outer cover, and the first bolt is threaded into the pad block; two second bolts are inserted into the cover plate, and the two second bolts are threaded into the screw holes on the outer wall of the assembly housing. A sleeve is fixedly installed on the section of the traction rod, and a spring is provided on the outside of the traction rod to bear pressure between the sleeve and the dust collection cover.

[0009] In a preferred embodiment, the present invention can be further configured such that: the inclined surfaces at both ends of the dust collection hood are provided with semi-cylindrical grooves, and the semi-cylindrical grooves are connected to the circular filter screen.

[0010] In a preferred embodiment, the present invention can be further configured as follows: the assisting mechanism includes a main shaft installed in two bearings, a first pulley installed at the outer end of the main shaft, a sliding column installed on the outside of the main shaft, a slider provided in a sliding groove outside the sliding column, a guide rod movably installed in the slider, and a sliding sleeve movably installed on the outside of the sliding column, with the guide rod adapted to penetrate into the tube section of the sliding sleeve; The tube section of the sliding sleeve is adapted to extend into the slide track inside the limiting plate.

[0011] In a preferred embodiment, the present invention may be further configured such that: a clamp is fixedly installed on the end of the traction rod that extends through the outside of the cover plate; a clamp is installed inside the clamp, and a ring gasket is installed inside the clamp; and the other end of the guide rod is installed in the plate segment with the ring gasket protruding.

[0012] In a preferred embodiment, the present invention can be further configured such that: a plurality of first drainage cavities are provided inside the front hood, an air intake groove communicating with the first drainage cavities is provided on the inner wall of the front hood, and two symmetrically distributed second pads are installed at the bottom of the front hood.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the rear cover has multiple second drainage chambers inside, the inner wall of the rear cover has an exhaust groove communicating with the second drainage chambers, the bottom of the rear cover has two symmetrically distributed third pads fixedly installed, and the outer surface of the rear cover has multiple fan-shaped holes, and filter elements are installed in the fan-shaped holes.

[0014] In a preferred embodiment, the present invention can be further configured as follows: two clamps are provided on the outside of the rear cover, three third bolts are inserted into the clamps, and the third bolts are adapted to be installed in the screw holes on the outside of the rear cover; a second pulley is movably installed in the two clamps; two fourth bolts are threaded on the second pulley; and a transmission belt is driven to the second pulley, the other end of which is driven to the first pulley.

[0015] In a preferred embodiment, the present invention can be further configured such that: an impeller is inserted into the interior of the second pulley, and the blades of the impeller are located in the inner cavity of the rear cover; two through holes are provided in the tube section of the impeller, and the threaded section of the fourth bolt is adapted to penetrate into the through holes.

[0016] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows: 1. This invention optimizes the motor housing and two covers of the stator assembly by creating multiple evenly distributed ventilation channels on the inner walls of the motor housing and the two covers. As the impeller inside the rear cover is driven by the rotor and rotates at high speed, the air is filtered through multiple filters and then enters the inner cavity of the rear cover. The airflow that is drawn in will circulate efficiently and with high fluidity along the optimized air channels, which facilitates efficient heat dissipation of the motor's internal components. As the rotor and impeller reverse their rotation, the internal airflow of the motor will be reversed, thereby achieving dynamic heat dissipation of the motor's internal cavity.

[0017] 2. This invention installs multiple sets of flow channel dust removal mechanisms arranged in a circular pattern on the outside of the assembly housing. As the rotor drives the first pulley and impeller to rotate at high speed, the transmission belt assisted by the first pulley will drive the second drive and the main shaft. Finally, the auxiliary mechanism will convert mechanical energy into the kinetic energy of the air filtered by the multiple sets of flow channel dust removal mechanisms, which facilitates the dust removal efficiency of the airflow passing through the multiple sets of flow channel dust removal mechanisms, thereby improving the cleanliness of the circulating airflow in the motor.

[0018] 3. This invention movably assembles the rear beam, inclined plate, and two filter pads inside the airflow duct. With the help of the inner arc-shaped plate segment of the baffle plate adapting to and bearing the pressure of the inclined plate, the vibration waves generated by the high-frequency vibration of multiple sets of inclined plates and filter pads along multiple airflow ducts can shake away the dirt attached to the motor housing. Combined with the internal circulation of high-pressure airflow, the dirt can be effectively stored from the airflow duct, further improving the cleanliness of the motor's internal environment and reducing the obstruction of rotor rotation caused by dirt. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the use of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a schematic diagram of the exhaust mechanism of the present invention; Figure 4 This is an exploded view of the air intake mechanism of the present invention; Figure 5 This is a schematic diagram of the housing mechanism of the present invention; Figure 6 For the present invention Figure 5 A partial cross-sectional view; Figure 7For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the flow channel dust removal mechanism of the present invention; Figure 9 For the present invention Figure 8 An explosion diagram; Figure 10 For the present invention Figure 9 Enlarged diagram of point B in the middle.

[0020] Figure label: 100. Housing structure; 110. Assembly shell; 120. Air duct; 130. Protective shell; 140. Clamping plate; 1401. Bearing; 150. Limiting plate; 160. First pad; 200. Dust collection mechanism; 210. Fan-shaped outer cover; 2101. First bolt; 220. Cover plate; 2201. Second bolt; 230. Dust collection hood; 2301. Circular filter screen; 2302. Baffle; 240. Pad; 250. Traction rod; 2501. Rod sleeve; 2502. Spring; 260. Beam rod; 2601. Inclined plate; 2602. Second filter pad; 2603. First filter pad; 270. Clamp; 2701. Clip; 280. Ring gasket; 300, Auxiliary mechanism; 310, Main shaft; 320, First pulley; 330, Sliding column; 340, Sliding block; 350, Guide rod; 360, Sliding sleeve; 400. Exhaust mechanism; 410. Front hood; 420. First air intake chamber; 4201. Air intake slot; 430. Second foot pad; 500, Air inlet mechanism; 510, Rear cover; 520, Second air intake chamber; 5201, Exhaust trough; 530, Third foot pad; 540, Filter element; 550, Clamp; 5501, Third bolt; 560, Second pulley; 5601, Fourth bolt; 570, Drive belt; 580, Impeller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a motor with sandwiched air duct cooling. Example

[0024] Combination Figures 1 to 10As shown, the present invention provides a motor with a sandwiched air duct cooling system, comprising a housing mechanism 100, an exhaust mechanism 400 installed at one end of the housing mechanism 100, an air inlet mechanism 500 installed at the other end of the housing mechanism 100, multiple sets of flow channel dust removal mechanisms 200 installed outside the housing mechanism 100, and an auxiliary mechanism 300 installed on the housing mechanism 100. The housing mechanism 100, in conjunction with the exhaust mechanism 400 and the air inlet mechanism 500, is used to provide an assembly carrier for the stator and rotor. The multiple sets of flow channel dust removal mechanisms 200 are used to remove dust from the circulating airflow, further improving the cleanliness of the motor's internal environment. The auxiliary mechanism 300 converts the mechanical energy of the device into the kinetic energy of the multiple sets of flow channel dust removal mechanisms 200 for dust removal.

[0025] The housing mechanism 100 includes an assembly housing 110, the inner wall of which is provided with a plurality of evenly distributed air ducts 120, and the outer wall of the assembly housing 110 is provided with a fan-shaped slot communicating with the air ducts 120. A protective housing 130 is installed on the outside of the assembly housing 110. The flow channel dust removal mechanism 200 includes a fan-shaped outer cover 210 installed outside the fan-shaped slot, and a cover plate 220 is provided on the outside of the fan-shaped outer cover 210. A dust collection hood 230 is installed inside the cover plate 220, and a baffle 2302 is installed inside the dust collection hood 230. A circular filter screen 2301 is installed in the holes on the outer wall of the dust collection hood 230. A traction rod 250 is movably installed inside the dust collection hood 230 and the baffle 2302. A beam rod 260 is installed at the inner end of the traction rod 250. One end of the beam rod 260... An inclined plate 2601 is installed, and a second filter pad 2602 and a first filter pad 2603 are installed at the other end of the beam rod 260. A pad block 240 is fixedly installed on the outside of the assembly housing 110. A first bolt 2101 is inserted into the plate segment outside the fan-shaped cover 210, and the first bolt 2101 is threaded in the pad block 240. Two second bolts 2201 are inserted into the cover plate 220, and the two second bolts 2201 are threaded in the screw holes on the outer wall of the assembly housing 110. A sleeve 2501 is fixedly installed on the rod segment of the traction rod 250, and a spring 2502 is provided on the outside of the traction rod 250 to bear pressure between the sleeve 2501 and the dust collection cover 230. The inclined surfaces at both ends of the dust collection hood 230 are provided with semi-cylindrical grooves, and the semi-cylindrical grooves are connected to the circular filter screen 2301; The exhaust mechanism 400 includes a front cover 410 installed at one end of the assembly housing 110. The front cover 410 has multiple first drainage chambers 420 inside. The inner wall of the front cover 410 has an air inlet groove 4201 communicating with the first drainage chambers 420. The bottom of the front cover 410 is equipped with two symmetrically distributed second pads 430. The air intake mechanism 500 includes a rear cover 510 installed at the other end of the assembly housing 110. The rear cover 510 has multiple second air intake chambers 520 inside. The inner wall of the rear cover 510 has an exhaust groove 5201 communicating with the second air intake chambers 520. Two symmetrically distributed third feet 530 are fixedly installed at the bottom of the rear cover 510. The outer panel of the rear cover 510 has multiple fan-shaped holes, and filter elements 540 are installed in the fan-shaped holes.

[0026] Preferably, multiple threaded segments distributed in a circular pattern are fixedly installed at both ends of the assembly housing 110, and nuts are installed on the threaded segments. After the front cover 410 and the rear cover 510 are respectively installed at both ends of the assembly housing 110, the front cover 410 and the rear cover 510 can be fixed and locked at both ends of the assembly housing 110 by multiple nuts. The air guide duct 120 is the same size as the first air intake cavity 420, which facilitates the orderly transfer of internal circulating airflow. In addition, the pad 240 is welded to the outer wall of the assembly housing 110, and silicone gaskets are fixedly installed on the arc-shaped ports of the fan-shaped cover 210 and the cover plate 220 facing the outer wall of the assembly housing 110 to enhance the sealing of the cover plate 220 and the fan-shaped cover 210 after closing. The curved surface of the side plate of the baffle 2302 and the inner wall of the air duct 120 are both coated with a smooth coating. The pore size of the filter holes inside the first filter pad 2603 is twice that of the filter holes inside the second filter pad 2602. The first filter pad 2603 is used for coarse filtration of the high-pressure airflow, and the second filter pad 2602 is used for suction filtration of the airflow. After the accumulated dirt is vibrated by the first filter pad 2603, the second filter pad 2602 and the inclined plate 2601, the accumulated dirt will be transferred along the inclined surface of the baffle 2302. Finally, the dirt will be stored in the cavity constructed by the baffle 2302 and the dust collection hood 230. The filtered airflow will be output along the two circular filter screens 2301 and the semi-cylindrical groove. In the dynamic pressure filtration airflow operation, the dirt in the airflow can be filtered efficiently. Example

[0027] Combination Figures 5 to 8 As shown, based on embodiment 1, two clamping plates 140 are installed on the outside of the assembly shell 110, and bearings 1401 are installed inside the clamping plates 140. Limiting plates 150 are installed inside the two clamping plates 140. Two symmetrically distributed first pads 160 are fixedly installed at the bottom of both ends of the assembly shell 110. The limiting plate 150 has a slide rail inside; A clamp 270 is fixedly installed on the end of the traction rod 250 that extends through the outside of the cover plate 220. A clip 2701 is installed inside the clamp 270, and a ring washer 280 is installed inside the clip 2701. The other end of the guide rod 350 is installed in the protruding plate segment of the ring washer 280. The assist mechanism 300 includes a main shaft 310 installed in two bearings 1401. A first pulley 320 is installed at the outer end of the main shaft 310. A slide column 330 is installed on the outside of the main shaft 310. A slider 340 is provided in the slide groove outside the slide column 330. A guide rod 350 is movably installed in the slider 340. A sliding sleeve 360 ​​is movably installed on the outside of the slide column 330, and the guide rod 350 is adapted to pass through the tube section of the sliding sleeve 360. The tube section of the sliding sleeve 360 ​​is adapted to extend into the slide rail inside the limiting plate 150.

[0028] Preferably, both clamping plates 140 and limiting plate 150 are made of aluminum alloy. In order to improve the smoothness of the rotation of the sliding column 330 along the inner cavity of the sliding sleeve 360, the outer surface of the sliding column 330 can be coated with lubricating oil. After the sliding sleeve 360 ​​tube section is adapted to pass through the inner slide of the limiting plate 150, the sliding sleeve 360, which is positioned and constrained by the limiting plate 150, together with the sliding column 330, can provide stabilization protection for the high-frequency vibration of the slider 340 and the guide rod 350. The ring pad 280 located outside the assembly housing 110 will be actively pulled by the guide rod 350. After the ring pad 280 vibrates at high frequency, the multiple clamps 270 and clips 2701 under traction will drive multiple traction rods 250 to reciprocate and extend. Finally, the traction rods 250 will drive the combined rear beam rod 260, inclined plate 2601, second filter pad 2602 and first filter pad 2603 to vibrate at high frequency, further accelerating the speed of dirt transfer. When it is necessary to clean the dirt regularly, the two second bolts 2201 are removed, and the cover plate 220, dust hood 230 and baffle 2302 are pulled out as a whole. At this time, the dirt stored in the inner cavity of the baffle 2302 and dust hood 230 can be cleaned by brush or fan. Example

[0029] Combination Figure 4 and Figure 7 As shown, in the above embodiment, the rear cover 510 is provided with two clamps 550 on the outside. Three third bolts 5501 are inserted into the clamps 550 and are adapted to be installed in the screw holes on the outside of the rear cover 510. A second pulley 560 is movably installed in the two clamps 550. Two fourth bolts 5601 are installed in the internal threads of the second pulley 560. A transmission belt 570 is drivenly connected to the second pulley 560, and the other end of the transmission belt 570 is drivenly connected to the first pulley 320. The second pulley 560 has an impeller 580 inserted inside, and the blades of the impeller 580 are located in the inner cavity of the rear cover 510. The pipe section of the impeller 580 has two through holes, and the threaded section of the fourth bolt 5601 is adapted to pass through the through holes.

[0030] Preferably, in order to improve the smoothness of the rotation of the impeller 580 tube section into the inner cavity of the rear cover 510, a bearing can be added to the internal hole of the rear cover 510. By installing the inner tube section of the impeller 580 in the inner ring hole of the bearing, the impeller 580 with enhanced support, together with the second pulley 560 and two fourth bolts 5601, can be fixed and locked to the rod end of the rotor. As the rotor rotates at high speed along the pre-installed stator cavity, the second pulley 560 and impeller 580 will rotate synchronously with the rotor. At this time, the rotating impeller 580 can draw in air, and after the air passes through multiple filter elements 540, the dirt in the airflow will be filtered. In addition, the second pulley 560 and the first pulley 320 can adjust the tension of the transmission belt 570. As the second pulley 560 rotates, the transmission belt 570 is driven to assist the first pulley 320 and the main shaft 310 in rotation. At this time, the main shaft 310, which is held by two bearings 1401, can provide stabilization protection for the high-frequency vibration of the slider 340 and the guide rod 350 in conjunction with the slide column 330.

[0031] The working principle and usage process of this invention are as follows: The pre-installed stator is fixedly installed in the inner wall of the assembly housing 110. Then, the pipe section inside the impeller 580 is adapted to pass through the hole in the middle of the rear cover 510. Next, the second pulley 560 is inserted into the pipe section of the impeller 580 that passes through the rear cover 510. After closing, the two clamps 550 are fixedly installed on the outside of the rear cover 510 using multiple third bolts 5501. At this time, the second pulley 560 will be positioned and clamped. Then, the rotor is inserted into the inner cavity of the pre-installed stator until one end of the rotor passes through the pipe section of the impeller 580. Then, two fourth bolts 5601 are inserted into the two fan-shaped plate sections at the outer end of the second pulley 560. The two fourth bolts 5601 are locked on the rod section of the rotor that passes through the second pulley 560 using a wrench. Then, the front cover 410 is assembled along the other end of the assembly housing 110 until the other end of the rotor is inserted into the front cover 410. At this time, multiple threaded sections at both ends of the assembly housing 110 are respectively inserted into the rear cover 510 and the front cover 410, and multiple nuts are used to fix the closed front cover 410 and the rear cover 510 to both ends of the assembly housing 110. When in use, after the motor is powered on and running, the rotor inside the assembly housing 110, front cover 410 and rear cover 510 rotates at high speed and heats up. The rotating rotor will drive the impeller 580 to rotate at high speed. At this time, the air in the environment will be filtered through multiple filter elements 540 and input into the inner cavity of the rear cover 510. Finally, the filtered airflow will be transferred from the inner cavity of the rear cover 510 to the cavities of the assembly housing 110 and front cover 410. After the airflow passes over the rotor surface, the high-speed airflow can continuously and efficiently cool and control the temperature of the rotor. At the same time, as the airflow enters the first drainage cavity 420 from the air inlet slot 4201, the airflow will circulate and transfer along the first drainage cavity 420, the air guide duct 120 and the second drainage cavity 520, thereby efficiently cooling the heated assembly shell 110, front cover 410 and rear cover 510. The internal circulating airflow can control the rotor temperature while avoiding the risk of excessive intake of dirt carried by ambient air and causing pollution inside the motor. As the second pulley 560 drives the transmission belt 570 to rotate, the other end of the transmission belt 570 drives the first pulley 320 and the main shaft 310. The main shaft 310, in conjunction with the sliding column 330, provides high-frequency boost to the slider 340 and guide rod 350 after they are constrained. Finally, the guide rod 350, after reciprocating sliding, drives the ring pad 280 to vibrate at high frequency. Under the traction of multiple sets of clamps 270 and clips 2701, the traction rod 250 drives the combined rear beam rod 260, inclined plate 2601, second filter pad 2602, and... The first filter pad 2603 vibrates at high frequency along the cavity reserved in the airflow duct 120 and the fan-shaped outer cover 210. The first filter pad 2603 and the second filter pad 2602, which forcefully compress the airflow, can filter the dirt in the airflow. The dirt accumulated after filtration will be pressurized by the airflow and stored in the cavity of the baffle 2302 and the dust collection cover 230. Finally, the airflow will flow back into the airflow duct 120 along the groove of the circular filter screen 2301 and the outer wall of the dust collection cover 230, thereby improving the cleanliness of the circulating cooling airflow in the motor.

[0032] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A belt sandwich duct cooled electric machine comprising a housing mechanism (100), characterized by, It includes an exhaust mechanism (400) installed at one end of the housing mechanism (100), an air inlet mechanism (500) installed at the other end of the housing mechanism (100), a multi-channel dust removal mechanism (200) installed outside the housing mechanism (100), and an auxiliary mechanism (300) installed on the housing mechanism (100). The housing mechanism (100) includes an assembly housing (110), the inner wall of which is provided with a plurality of evenly distributed air ducts (120), and the outer wall of the assembly housing (110) is provided with a fan-shaped slot communicating with the air ducts (120), and a protective housing (130) is installed on the outside of the assembly housing (110). The flow channel dust removal mechanism (200) includes a fan-shaped outer cover (210) installed outside the fan-shaped slot, and a cover plate (220) is provided on the outside of the fan-shaped outer cover (210). A dust collection cover (230) is installed on the inside of the cover plate (220). A baffle (2302) is installed on the inside of the dust collection cover (230). A circular filter screen (2301) is installed in the holes of the outer wall of the dust collection cover (230). A traction rod (250) is movably installed inside the dust collection cover (230) and the baffle (2302). A beam rod (260) is installed at the inner end of the traction rod (250). An inclined plate (2601) is installed at one end of the beam rod (260), and a second filter pad (2602) and a first filter pad (2603) are installed at the other end of the beam rod (260). The exhaust mechanism (400) includes a front cover (410) installed at one end of the mounting housing (110). The air intake mechanism (500) includes a rear cover (510) mounted on the other end of the assembly housing (110).

2. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The assembly housing (110) has two clamping plates (140) installed on its exterior, and bearings (1401) are installed inside the clamping plates (140). Limiting plates (150) are installed inside the two clamping plates (140). Two first pads (160) are fixedly installed at the bottom of both ends of the assembly housing (110). The limiting plate (150) has a sliding track inside.

3. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The flow channel dust removal mechanism (200) also includes a pad (240) fixedly installed on the outside of the assembly housing (110). A first bolt (2101) is inserted into the plate segment outside the fan-shaped cover (210), and the first bolt (2101) is threaded in the pad (240). Two second bolts (2201) are inserted into the cover plate (220), and the two second bolts (2201) are threaded in the screw holes on the outer wall of the assembly housing (110). A sleeve (2501) is fixedly installed on the rod segment of the traction rod (250), and a spring (2502) is provided on the outside of the traction rod (250) to bear pressure between the sleeve (2501) and the dust collection cover (230).

4. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The inclined surfaces at both ends of the dust collection hood (230) are provided with semi-cylindrical grooves, and the semi-cylindrical grooves are connected to the circular filter screen (2301).

5. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The assist mechanism (300) includes a main shaft (310) installed in two bearings (1401), a first pulley (320) installed at the outer end of the main shaft (310), a slide column (330) installed on the outside of the main shaft (310), a slider (340) provided in the slide groove outside the slide column (330), a guide rod (350) movably installed in the slider (340), a sliding sleeve (360) movably installed on the outside of the slide column (330), and the guide rod (350) is adapted to pass through the tube section of the sliding sleeve (360); The tube section of the sliding sleeve (360) is adapted to extend into the slide rail inside the limiting plate (150).

6. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The traction rod (250) extends through the outside of the cover plate (220) and is fixedly installed with a clamp (270). A clip (2701) is installed inside the clamp (2701), and a ring washer (280) is installed inside the clip (2701). The other end of the guide rod (350) is installed in the protruding plate segment of the ring washer (280).

7. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The front hood (410) has multiple first drainage chambers (420) inside, and the inner wall of the front hood (410) has an air intake groove (4201) communicating with the first drainage chambers (420). The bottom of the front hood (410) is equipped with two symmetrically distributed second pads (430).

8. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The rear cover (510) has multiple second drainage chambers (520) inside. The inner wall of the rear cover (510) has an exhaust groove (5201) that communicates with the second drainage chambers (520). The bottom of the rear cover (510) is fixedly installed with two symmetrically distributed third pads (530). The outer surface of the rear cover (510) has multiple fan-shaped holes, and filter elements (540) are installed in the fan-shaped holes.

9. An electric machine with sandwiched duct cooling according to claim 1, characterized in that, The rear cover (510) has two clamps (550) on its exterior. Three third bolts (5501) are inserted into the clamps (550), and the third bolts (5501) are fitted into the screw holes on the exterior of the rear cover (510). A second pulley (560) is movably installed in the two clamps (550). Two fourth bolts (5601) are threaded into the second pulley (560), and a drive belt (570) is drivenly connected to the second pulley (560). The other end of the drive belt (570) is drivenly connected to the first pulley (320).

10. An electric machine with sandwiched duct cooling according to claim 9, characterized in that, An impeller (580) is inserted into the interior of the second pulley (560), and the blades of the impeller (580) are located in the inner cavity of the rear cover (510). Two through holes are opened in the pipe section of the impeller (580), and the threaded section of the fourth bolt (5601) is adapted to penetrate into the through holes.

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