Jet flow induced air cooling structure of motor shell

Abstract

The invention discloses a jet flow induced air cooling structure of a motor shell, which belongs to the technical field of motor cooling and comprises a shell, a front end cover and a rear end cover are fixedly mounted at the front end and the rear end of the shell respectively, a fan cover is mounted on the rear end cover, and a cooling mechanism is mounted on the shell, the rear end cover and the fan cover. According to the jet flow induced air cooling structure of the motor shell, when air enters the fan cover, the air enters the first air inlet channel, the air inlet groove and the second air inlet channel through cooperation of the fan, and the first air inlet channel and the second air inlet channel can blow the air into the rotor and the gap between the rotor and the stator for heat dissipation; the air inlet grooves can convey air into the nozzles through the cones of the air inlet grooves, when the air enters the nozzles, the nozzles can spray the air to the stator and the stator winding for heat dissipation, and the air can be conveniently divided into multiple strands to conduct heat dissipation on parts at different positions after entering the shell.

Description

Technical Field

[0001] This invention relates to the field of motor cooling technology, specifically to a jet-induced air cooling structure for motor housing. Background Technology

[0002] Electric motors are core power components in industrial production, transportation, and new energy equipment. During operation, they generate a large amount of heat due to electromagnetic and mechanical losses. If this heat is not dissipated in time, the internal temperature of the motor will rise, affecting insulation performance, operating efficiency, and service life. Therefore, an efficient cooling structure is crucial for motor design. The housing, as the primary carrier for heat transfer, is the subject of widespread cooling technology. Jet cooling, with its high-speed airflow directly impacting the heated surface and enhancing convective heat transfer, offers significant advantages in heat dissipation within compact spaces. The airflow structure guides the airflow in a directional manner, optimizing the heat dissipation path and improving heat exchange uniformity.

[0003] Authorization announcement number CN119030242B discloses a heat dissipation explosion-proof motor. This invention belongs to the field of explosion-proof motor technology and includes a housing, stator, rotor, sealing front cover, sealing rear cover, fan, adjustment component, adjustment frame, vent pipe, lightweight plate, sealing rubber, and dustproof screen. As the motor speed increases, the fan speed also increases, and the motor's operating heat increases. During this process, the electromagnetic ring attracts the suction plate, causing it to slide along the rotating sleeve. When the gear on the suction plate meshes with the rack plate, the fan drives the lightweight plate to move relatively away through the gear. As the lightweight plate moves, it stretches the dust filter, increasing its vertical area and airflow. This increases both the fan speed and the ventilation of the dust filter, thus improving the fan's heat dissipation efficiency. This allows the fan to effectively dissipate the increased operating heat from the motor, preventing heat buildup inside the motor from affecting its circuitry. In this invention, the heat pipe can conduct heat generated during motor operation, and the fan draws external air into the heat pipe, which is then exhausted by airflow. However, in this method, the heat pipe can only be placed in the gap between the rotor and stator, resulting in a relatively fixed installation position. This limits the amount of heat the heat pipe can absorb and makes it inconvenient to dissipate heat at different locations. Summary of the Invention

[0004] The purpose of this invention is to provide a jet-induced air cooling structure for a motor housing. Air enters the interior of the first air inlet channel, the second air inlet channel, and the air inlet slot through the cooperation of a fan. After entering the first air inlet channel, the second air inlet channel, and the air inlet slot, the air can dissipate heat from the rotor, the stator, and the gap between the rotor and the stator, respectively. This allows the air to be divided into multiple streams after entering the housing to dissipate heat from components in different locations.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a jet-induced air cooling structure for a motor housing, comprising: a housing, a front end cover and a rear end cover fixedly installed at the front and rear ends of the housing respectively, a fan cover installed on the rear end cover, and a cooling mechanism installed on the housing, the rear end cover and the fan cover, the cooling mechanism comprising a heat dissipation component, an air intake component, a jet component and an air inlet component; The heat dissipation assembly includes an assembly plate, a first air inlet channel, a second air inlet channel, an air inlet slot, and a nozzle. The assembly plate is rotatably mounted at the axial center of the rear end cover. The first air inlet channel and the second air inlet channel are respectively opened at the axial center of the assembly plate. At least eight air inlet slots are opened through the axial center of the assembly plate in a ring array. A nozzle is provided on the side of the assembly plate near the air inlet slot. The first air inlet channel, the nozzle, and the second air inlet channel can dissipate heat from the rotor, the stator, and the gap between the rotor and the stator, respectively. The jet assembly includes jet channels, and a plurality of vertical high-pressure air jet channels are fixedly installed on the outer surface of the housing in a ring array. The air intake assembly includes a rectifier groove and an air intake port. The rectifier groove is formed on the inner wall of the housing. Several air intake ports are formed in a ring array on the inner side wall of the rectifier groove. The other end of the air intake port is connected to the jet groove. The air intake assembly includes an air intake panel, air inlets, a filter screen, and a cleaning brush. The air intake panel is rotatably mounted on the end of the fan cover via a circular groove. At least seven air inlets are arranged in a circular array at the axial center of the air intake panel. A filter screen is fixedly installed inside each of the seven air inlets. A cleaning brush is provided on one side of the air intake panel.

[0006] Preferably, the nozzle includes a rubber connecting ring and a mounting ring, with the rubber connecting ring connected to one end of the nozzle and the mounting ring connected to one end of the rubber connecting ring, and the mounting ring installed at one end of the air inlet slot.

[0007] Preferably, the nozzle further includes a connecting shaft, a guide rod, a corrugated guide groove, and a heat dissipation groove. The connecting shaft is installed on the outer surface of the nozzle, and the guide rod is rotatably installed on the inner side of the connecting shaft. The other end of the guide rod is slidably connected to the inner side of the corrugated guide groove. The corrugated guide groove is fixedly installed on the inner wall of the housing. Several heat dissipation grooves are formed in a ring array on the inner wall of the housing near the stator.

[0008] Preferably, the heat dissipation assembly further includes a bearing, which is rotatably mounted through the axial center of the assembly plate. A rotating shaft is connected through the inner side of the bearing. The bearing includes blades and a rotating ring. Several blades are fixedly mounted in a ring array on the inner side of both the first and second air inlet channels. The assembly plate and the rear end cover are connected by the rotating ring.

[0009] Preferably, the air intake assembly further includes a shroud and air inlets. The shroud is fixedly installed on the inner wall of the housing near the rectifier slot. The shroud has three sets of air inlets arranged in a ring array at the axial center of the side near the rear end cover. The three sets of air inlets can respectively draw in air that has been cooled by passing through the rotor, stator, and the gap between the rotor and stator.

[0010] Preferably, the jet assembly further includes a flow divider ring and a high-pressure air inlet. The flow divider ring is fixedly installed at the end of the jet channel, the inner side of the flow divider ring is fixedly installed on the housing, and the high-pressure air inlet is fixedly installed at the other end of the flow divider ring away from the jet channel.

[0011] Preferably, the air intake assembly further includes a cleaning rod, an elastic element, and a rotating ring. The cleaning rod is fixedly installed on the inner side of the filter screen, the elastic element is installed on the back of the air intake panel, and the rotating ring is installed on the inner side of the elastic element and the fan cover.

[0012] Preferably, the air intake assembly further includes a rotating plate, a magnet, a baffle, an armature, a telescopic rod, and a mounting bracket. The rotating plate is provided at the axial center of the back of the air intake panel. The rotating plate is fixedly installed at the end of the rotating shaft, and magnets are fixedly installed at both ends of the rotating plate. Two baffles are symmetrically installed on the back of the air inlet panel near the magnet, and an armature that cooperates with the magnet is fixedly installed on the inner side of the baffle. The cleaning brush is connected to a mounting bracket on one side. The surface of the mounting bracket is provided with an extension rod. The extension rod is slidably connected to the air inlet panel. A telescopic rod is installed at the end of the mounting bracket. The end of the telescopic rod is installed on the outer surface of the fan cover.

[0013] Compared with the prior art, the beneficial effect of the present invention is: the jet cooling structure for the motor housing.

[0014] 1. When air enters the fan shroud, it enters the first air intake channel, the air intake slot and the second air intake channel through the fan. The first air intake channel and the second air intake channel can blow air into the rotor and the gap between the rotor and the stator for heat dissipation. The air intake slot can deliver air into the nozzle through its own cone shape. When the air enters the nozzle, the nozzle will spray the air onto the stator and stator windings for heat dissipation. This makes it convenient for the air to be divided into multiple streams after entering the housing to dissipate heat for components in different locations. 2. When air enters the first and second air inlet channels, the blades work together to rotate the assembly plate. When the assembly plate rotates, it drives the nozzle to rotate. When the nozzle rotates, it sprays air onto the stator and stator windings, which helps to improve the heat dissipation of the stator and stator windings. 3. The assembly plate rotates, which drives the nozzle to rotate. When the nozzle rotates, it can be driven to swing through the cooperation of the connecting shaft, guide rod and corrugated guide groove. When the nozzle swings, it sprays air onto the stator and stator winding for heat dissipation. The air sprayed by the nozzle can be drawn into the heat dissipation tank through the air inlet. When the air enters the heat dissipation tank, it will dissipate heat from the inside of the stator and the housing, so that the air from the nozzle can deeply dissipate heat from the stator and the housing. 4. The fan draws air from outside the fan housing through the air inlet. As the air passes through the air inlet, the filter removes dust and impurities. When dust accumulates to a certain level inside the filter, the rotating shaft, through the cooperation of various components, drives the air inlet panel to rotate. This rotation causes the air inlet and filter to rotate as well. As the filter rotates, a cleaning brush cleans the dust inside the filter. The cleaning brush pushes the dust from the beveled part of the filter to the flat part for collection, facilitating automatic cleaning of the filter and preventing clogging that could reduce the motor's heat dissipation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure from a three-dimensional perspective of the present invention; Figure 3 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 4 This is a three-dimensional enlarged structural diagram of the rear cover of the present invention; Figure 5 This is a three-dimensional enlarged structural diagram of the nozzle of the present invention; Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the corrugated guide groove of the present invention; Figure 7This is a three-dimensional enlarged structural schematic diagram of the fairing of the present invention; Figure 8 This is a three-dimensional exploded view of the air intake component of the present invention; Figure 9 This is a two-dimensional exploded view of the air intake component of the present invention; Figure 10 This is the present invention. Figure 9 Enlarged structural diagram of section A; Figure 11 This is the present invention. Figure 9 Enlarged structural diagram of section B.

[0016] In the diagram: 100, casing; 200. Front cover; 300. Rear end cover; 400. Fan cover; 500. Cooling mechanism; 510. Heat dissipation component; 511. Assembly plate; 512. First air intake channel; 513. Second air intake channel; 514. Air intake slot; 515, Nozzle; 5151, Rubber connecting ring; 5152, Mounting ring; 5153, Connecting shaft; 5154, Guide rod; 5155, Corrugated guide groove; 5156, Heat dissipation groove; 516. Bearing; 5161. Blade; 5162. Rotating ring; 520. Air intake assembly; 521. Shaft; 522. Air inlet; 523. Rectifier slot; 524. Air outlet; 530. Jet assembly; 531. Jet channel; 532. Flow divider ring; 533. High-pressure air inlet; 540. Air intake assembly; 541. Air intake panel; 542. Air inlet; 543. Filter screen; 544. Cleaning rod; 545. Elastic element; 546. Rotating ring; 547. Rotating plate; 548. Magnet; 549. Baffle; 5410. Armature; 5411. Telescopic rod; 5412. Mounting bracket; 5413. Cleaning brush. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] Please see Figures 1-4 , Figure 8 and Figure 9 The present invention provides an embodiment of a jet-induced air cooling structure for a motor housing, comprising: a housing 100, a front end cover 200 and a rear end cover 300 respectively fixedly installed at the front and rear ends of the housing 100, a fan cover 400 installed on the rear end cover 300, and a cooling mechanism 500 installed on the housing 100, the rear end cover 300 and the fan cover 400, the cooling mechanism 500 including a heat dissipation component 510, an air intake component 520, a jet component 530 and an air inlet component 540; It should be noted that when the motor is working, the shaft will drive the fan to work. The fan will draw outside air into the fan cover 400 through the air intake assembly 540. When the air passes through the air intake assembly 540, the air intake assembly 540 can filter the dust and impurities in the air. When the air enters the fan cover 400, it can dissipate heat from the rotor, stator and the gap between the rotor and stator through the heat dissipation assembly 510. At the same time as the motor is working, the jet assembly 530 is working. When the jet assembly 530 is working, it can make the high-pressure gas flow rapidly. When the high-pressure gas flows rapidly, it can draw the air that has been cooled inside the housing 100 through the air intake assembly 520 into the jet assembly 530 and then discharge the high-pressure air through the jet assembly 530.

[0020] like Figures 1-5 , Figure 8 and Figure 9 As shown, the heat dissipation assembly 510 includes an assembly plate 511, a first air inlet channel 512, a second air inlet channel 513, an air inlet slot 514, and a nozzle 515. The assembly plate 511 is rotatably mounted at the axial center of the rear end cover 300. The first air inlet channel 512 and the second air inlet channel 513 are respectively opened at the axial center of the assembly plate 511. At least eight air inlet slots 514 are opened through the axial center of the assembly plate 511 in a ring array. The nozzle 515 is provided on the side of the assembly plate 511 near the air inlet slot 514. The first air inlet channel 512, the nozzle 515, and the second air inlet channel 513 can dissipate heat from the rotor, the stator, and the gap between the rotor and the stator, respectively. It can be imagined that when air enters the interior of the fan cover 400, the air enters the interior of the first air intake channel 512, the air intake slot 514 and the second air intake channel 513 respectively through the cooperation of the fan. After air enters the interior of the first air inlet channel 512, the first air inlet channel 512 can blow the air toward the rotor. When the air is blown toward the rotor, it can enter the through slot of the rotor for heat dissipation. After the air enters the interior of the second air inlet channel 513, the second air inlet channel 513 can blow the air into the gap between the rotor and the stator. When the air enters the gap between the rotor and the stator, it can carry away the heat generated by the rotor and the stator during operation. When air enters the air inlet slot 514, the air inlet slot 514 can deliver the air to the inside of the nozzle 515 through its own cone shape. When the air enters the inside of the nozzle 515, the nozzle 515 will spray the air onto the stator and stator windings for heat dissipation.

[0021] like Figures 3-5 As shown, the nozzle 515 includes a rubber connecting ring 5151 and a mounting ring 5152. The end of the nozzle 515 is connected to the rubber connecting ring 5151, and one end of the rubber connecting ring 5151 is connected to the mounting ring 5152. The mounting ring 5152 is installed at one end of the air inlet slot 514. It is worth noting that the rubber connecting ring 5151 can flexibly connect the mounting ring 5152 and the nozzle 515. When the nozzle 515 is pushed, it can swing through the cooperation of the rubber connecting ring 5151. When the nozzle 515 swings, it can increase the heat dissipation range of the air to the stator and stator winding.

[0022] like Figures 1-7 As shown, the nozzle 515 also includes a connecting shaft 5153, a guide rod 5154, a corrugated guide groove 5155, and a heat dissipation groove 5156. The connecting shaft 5153 is installed on the outer surface of the nozzle 515. The guide rod 5154 is rotatably installed on the inner side of the connecting shaft 5153. The other end of the guide rod 5154 is slidably connected to the inner side of the corrugated guide groove 5155. The corrugated guide groove 5155 is fixedly installed on the inner wall of the housing 100. Several heat dissipation grooves 5156 are formed in a ring array on the inner wall of the housing 100 near the stator. It is understood that when the assembly plate 511 rotates, it will drive the nozzle 515 to rotate. When the nozzle 515 rotates, it can drive the guide rod 5154 to rotate through the connecting shaft 5153. When the guide rod 5154 rotates, its end will slide in the corrugated guide groove 5155. When the guide rod 5154 slides, it can move through the cooperation of the corrugated guide groove 5155. When the guide rod 5154 moves, it can push the nozzle 515 to swing through the cooperation of the connecting shaft 5153. When the nozzle 515 swings, it will spray air onto the stator and stator winding for heat dissipation. The air sprayed by the nozzle 515 can be drawn into the heat dissipation groove 5156 through the cooperation of the air inlet 522. When the air enters the heat dissipation groove 5156, it will dissipate heat from the stator and the interior of the housing 100. After the air dissipates heat from the stator, it can be discharged from the other end of the heat dissipation groove 5156.

[0023] like Figures 3-5 As shown, the heat dissipation assembly 510 also includes a bearing 516. The bearing 516 is rotatably mounted through the axial center of the mounting plate 511. A rotating shaft is connected through the inner side of the bearing 516. The bearing 516 includes blades 5161 and a rotating ring 5162. Several blades 5161 are fixedly mounted in a ring array on the inner side of both the first air inlet channel 512 and the second air inlet channel 513. The mounting plate 511 and the rear end cover 300 are connected by the rotating ring 5162. It should be understood that when air enters the first air inlet channel 512 and the second air inlet channel 513, it can drive the assembly plate 511 to rotate through the cooperation of the blades 5161. When the assembly plate 511 rotates, it can rotate through the bearing 516 and the rotating shaft. At the same time, the rotation of the assembly plate 511 can also rotate through the cooperation of the rotating ring 5162 and the rear end cover 300. When the assembly plate 511 rotates, it can drive the nozzle 515 to rotate. When the nozzle 515 rotates, it can spray air onto the stator and stator windings.

[0024] like Figures 1-3 As shown, the jet assembly 530 includes jet channels 531. Several vertical high-pressure air jet channels 531 are fixedly installed on the outer surface of the housing 100 in a ring array. The jet channels 531 are composed of high-speed flow parts and jet parts and other components. It should be noted that when the high-pressure air enters the high-speed flow section, it will flow rapidly. As the air flows rapidly, the temperature of the airflow decreases. The high-speed cooling airflow can cool the shell 100 while being transported. After cooling the shell 100, the high-speed airflow is transported to the jet section through the high-speed flow section. After entering the jet section, the high-speed airflow will form pressure inside the jet section. The low pressure inside the jet section can draw out the air inside the shell 100 through the cooperation of the air intake assembly 520 and discharge it to the outside of the jet channel 531.

[0025] like Figures 1-3 As shown, the jet assembly 530 also includes a diverting ring 532 and a high-pressure air inlet 533. The diverting ring 532 is fixedly installed at the end of the jet channel 531. The inner side of the diverting ring 532 is fixedly installed on the housing 100. The high-pressure air inlet 533 is fixedly installed at the other end of the diverting ring 532 away from the jet channel 531. It is conceivable that the air booster can deliver high-pressure air to the inside of the split ring 532 through the high-pressure air inlet 533. After the high-pressure air enters the inside of the split ring 532, the split ring 532 can evenly distribute the high-pressure air to the inside of the jet channel 531.

[0026] like Figures 1-3 As shown, the air intake assembly 520 includes a rectifier groove 523 and an air intake port 524. The rectifier groove 523 is provided on the inner wall of the housing 100. Several air intake ports 524 are provided in a ring array on the inner side wall of the rectifier groove 523. The other end of the air intake port 524 is connected to the jet groove 531. It is worth noting that the negative pressure generated by the jet section inside the jet channel 531 will introduce the air inside the rectifier channel 523 into the interior of the jet section through the air inlet 524. When the air enters the interior of the jet section, it can be discharged from the jet channel 531 along with the high-speed airflow. The high-speed airflow inside the jet channel 531 can dissipate heat from the housing 100 when it flows.

[0027] like Figures 1-4 , Figure 7 As shown, the air intake assembly 520 also includes a shroud 521 and an air inlet 522. The shroud 521 is fixedly installed on the inner wall of the housing 100 near the rectifier groove 523. The shroud 521 has three sets of air inlets 522 arranged in a ring array at the axial center of the side near the rear end cover 300. The three sets of air inlets 522 can respectively draw in the air that has been cooled by the rotor, the stator and the gap between the rotor and the stator. It is clear that the negative pressure inside the jet channel 531 can generate suction in the rectifier 521 through the air inlet 524 and the rectifier channel 523. The suction generated by the rectifier 521 can draw air from inside the housing 100 into the rectifier 521 through the air inlet 522, and then transport the air to the inside of the jet channel 531 through the rectifier 521, the rectifier channel 523 and the air inlet 524. The air inlet 522 is provided with three sets that can collect the air dissipated by the rotor, the stator and the gap between the rotor and the stator respectively. The three sets of air inlets 522 can improve the air inflow into the housing 100.

[0028] like Figures 1-3 , Figure 8 , Figure 9As shown, the air intake assembly 540 includes an air intake panel 541, an air inlet 542, a filter screen 543, and a cleaning brush 5413. The air intake panel 541 is rotatably mounted on the end of the fan cover 400 through a circular groove. At least seven air inlets 542 are arranged in a circular array at the axial center of the air intake panel 541. A filter screen 543 is fixedly installed inside each of the seven air inlets 542. The filter screen 543 is composed of components such as a beveled part and a flat part. A cleaning brush 5413 is provided on one side of the air intake panel 541. It should be understood that the fan operation can draw air from outside the fan cover 400 into the fan cover 400 through the air inlet 542. When the air passes through the air inlet 542, the filter screen 543 can filter the dust and impurities inside the air. When the dust inside the filter screen 543 accumulates to a certain extent, the rotating shaft will drive the air inlet panel 541 to rotate through the cooperation of the parts. When the air inlet panel 541 rotates, it will drive the air inlet 542 and the filter screen 543 to rotate. When the filter screen 543 rotates, the cleaning brush 5413 will clean the dust inside the filter screen 543. The cleaning brush 5413 can push the dust on the inclined part of the filter screen 543 into the flat part for collection.

[0029] like Figures 1-3 and Figures 8-10 As shown, the air intake assembly 540 also includes a cleaning rod 544, an elastic element 545, and a rotating ring 546. The cleaning rod 544 is fixedly installed on the inner side of the filter screen 543, and the elastic element 545 is installed on the back of the air intake panel 541. The elastic element 545 is composed of components such as a spring, a sliding rod, and a sliding hole. The rotating ring 546 is installed on the inner side of the fan cover 400 along with the elastic element 545. It should be noted that when the filter screen 543 filters dust for a long time, the dust can easily clog the filter screen 543. As the filter screen 543 becomes gradually clogged, the air intake of the filter screen 543 will gradually decrease. Meanwhile, the suction force of the fan will act on the air intake panel 541 and the filter screen 543, causing the air intake panel 541 to move closer to the fan. When the air intake panel 541 is pulled, it can drive the slide rod to slide in the sliding hole on the rotating ring 546. At the same time, the air intake panel 541 will compress the spring. When the air intake panel 541 moves to the designated position, it can rotate through the cooperation of the parts. When the air intake panel 541 rotates, it can drive the rotating ring 546 to rotate inside the fan cover 400 through the cooperation of the slide rod. When the cleaning brush 5413 cleans the dust into the flat part of the filter screen 543, the cleaning rod 544 will insert into the cleaning brush 5413. When the air inlet panel 541 causes the filter screen 543 to separate from the cleaning brush 5413, the filter screen 543 will cause the cleaning rod 544 to separate from the cleaning brush 5413. When the cleaning brush 5413 separates from the cleaning rod 544, the cleaning brush 5413 will clean the dust and impurities inside the cleaning brush 5413.

[0030] like Figures 1-3 , Figure 8 , Figure 9 and Figure 11 As shown, the air intake assembly 540 also includes a rotating plate 547, a magnet 548, a baffle 549, an armature 5410, a telescopic rod 5411, and a mounting bracket 5412. The rotating plate 547 is provided at the axial center of the back of the air intake panel 541. The rotating plate 547 is fixedly installed at the end of the rotating shaft, and magnets 548 are fixedly installed at both ends of the rotating plate 547. Two baffles 549 are symmetrically installed on the back of the air inlet panel 541 near the magnet 548. An armature 5410 that cooperates with the magnet 548 is fixedly installed on the inner side of the baffle 549. A mounting bracket 5412 is connected to one side of the cleaning brush 5413. An extension rod is provided on the surface of the mounting bracket 5412. The extension rod is slidably connected to the air inlet panel 541. A telescopic rod 5411 is installed at the end of the mounting bracket 5412. The end of the telescopic rod 5411 is installed on the outer surface of the fan cover 400. It is conceivable that when the air intake panel 541 approaches the fan, it will cause the baffle 549 and armature 5410 to move. Simultaneously, the rotating shaft will cause the fan, rotating plate 547, and magnet 548 to rotate. When the baffle 549 moves to the designated position, the rotation of the rotating plate 547 will cause the magnet 548 to come into contact with the baffle 549. After the magnet 548 contacts the baffle 549, it can magnetically attract the armature 5410 using its own material. The magnet 548 and armature 541... After the magnet 548 is attracted, it will rotate and drive the baffle 549 and the air inlet panel 541 to rotate. When the air inlet panel 541 rotates, the cleaning brush 5413 can clean the dust in the filter screen 543. After the dust in the filter screen 543 is cleaned, the internal ventilation will be restored. After the ventilation of the filter screen 543 is restored, the air inlet panel 541 can be reset through the cooperation of the elastic element 545. After the air inlet panel 541 is reset, it will drive the baffle 549, armature 5410 and magnet 548 to separate. When the air inlet panel 541 approaches the fan, it pulls the extension rod. When the extension rod is pulled, it can pull the mounting bracket 5412 and the cleaning brush 5413. When the mounting bracket 5412 is pulled, it will drive the telescopic rod 5411 to extend and retract, so that the cleaning brush 5413 is always in contact with the air inlet panel 541 and the filter screen 543. When the air inlet panel 541 rotates, it can slide through the rotating groove and the extension rod.

[0031] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A jet-induced air cooling structure for an electric motor housing, comprising: A housing, wherein a front cover and a rear cover are fixedly installed at the front and rear ends of the housing respectively, a fan cover is installed on the rear cover, and a cooling mechanism is installed on the housing, the rear cover and the fan cover, wherein the cooling mechanism includes a heat dissipation component, an air intake component, a jet component and an air intake component; The heat dissipation assembly includes an assembly plate, a first air inlet channel, a second air inlet channel, an air inlet slot, and a nozzle. The assembly plate is rotatably mounted at the axial center of the rear end cover. The first air inlet channel and the second air inlet channel are respectively opened at the axial center of the assembly plate. At least eight air inlet slots are opened through the axial center of the assembly plate in a ring array. A nozzle is provided on the side of the assembly plate near the air inlet slot. The first air inlet channel, the nozzle, and the second air inlet channel can dissipate heat from the rotor, the stator, and the gap between the rotor and the stator, respectively. The jet assembly includes jet channels, and a plurality of vertical high-pressure air jet channels are fixedly installed on the outer surface of the housing in a ring array. The air intake assembly includes a rectifier groove and an air intake port. The rectifier groove is formed on the inner wall of the housing. Several air intake ports are formed in a ring array on the inner side wall of the rectifier groove. The other end of the air intake port is connected to the jet groove. The air intake assembly includes an air intake panel, air inlets, a filter screen, and a cleaning brush. The air intake panel is rotatably mounted on the end of the fan cover via a circular groove. At least seven air inlets are arranged in a circular array at the axial center of the air intake panel. A filter screen is fixedly installed inside each of the seven air inlets. A cleaning brush is provided on one side of the air intake panel.

2. The jet-induced air cooling structure for a motor housing according to claim 1, characterized in that: The nozzle includes a rubber connecting ring and a mounting ring. The end of the nozzle is connected to the rubber connecting ring, and one end of the rubber connecting ring is connected to the mounting ring. The mounting ring is installed at one end of the air inlet slot.

3. The jet-induced air cooling structure for a motor housing according to claim 1, characterized in that: The nozzle also includes a connecting shaft, a guide rod, a corrugated guide groove, and a heat dissipation groove. The connecting shaft is installed on the outer surface of the nozzle, and the guide rod is rotatably installed on the inner side of the connecting shaft. The other end of the guide rod is slidably connected to the inner side of the corrugated guide groove. The corrugated guide groove is fixedly installed on the inner wall of the housing. Several heat dissipation grooves are formed in a ring array on the inner wall of the housing near the stator.

4. The jet-induced air cooling structure for a motor housing according to claim 1, characterized in that: The heat dissipation assembly also includes a bearing. The bearing is rotatably mounted through the axial center of the assembly plate. A rotating shaft is connected through the inner side of the bearing. The bearing includes blades and a rotating ring. Several blades are fixedly mounted in a ring array on the inner side of both the first air inlet channel and the second air inlet channel. The assembly plate and the rear end cover are connected by the rotating ring.

5. The jet-induced air cooling structure for a motor housing according to claim 1, characterized in that: The air intake assembly also includes a shroud and air inlets. The shroud is fixedly installed on the inner wall of the housing near the rectifier slot. Three sets of air inlets are arranged in a ring array at the axial center of the side of the shroud near the rear end cover. The three sets of air inlets can respectively draw in air that has been cooled by the rotor, stator and the gap between the rotor and stator.

6. The jet-induced air cooling structure for a motor housing according to claim 1, characterized in that: The jet assembly also includes a flow divider ring and a high-pressure air inlet. The flow divider ring is fixedly installed at the end of the jet channel, and the inner side of the flow divider ring is fixedly installed on the housing. The high-pressure air inlet is fixedly installed at the other end of the flow divider ring away from the jet channel.

7. The jet-induced air cooling structure for a motor housing according to claim 1, characterized in that: The air intake assembly also includes a cleaning rod, an elastic element, and a rotating ring. The cleaning rod is fixedly installed on the inner side of the filter screen, the elastic element is installed on the back of the air intake panel, and the rotating ring is installed on the inner side of the elastic element and the fan cover.

8. The jet-induced air cooling structure for a motor housing according to claim 7, characterized in that: The air intake assembly also includes a rotating plate, a magnet, a baffle, an armature, a telescopic rod, and a mounting bracket. The rotating plate is located at the axial center of the back of the air intake panel. The rotating plate is fixedly installed at the end of the rotating shaft, and magnets are fixedly installed at both ends of the rotating plate. Two baffles are symmetrically installed on the back of the air inlet panel near the magnet, and an armature that cooperates with the magnet is fixedly installed on the inner side of the baffle. The cleaning brush is connected to a mounting bracket on one side. The surface of the mounting bracket is provided with an extension rod. The extension rod is slidably connected to the air inlet panel. A telescopic rod is installed at the end of the mounting bracket. The end of the telescopic rod is installed on the outer surface of the fan cover.

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