Permanent magnet motor and aerial work applications

Abstract

The application discloses a permanent magnet motor and high-altitude operation application, comprising: a shell, a vertical partition plate is arranged in the shell, the partition plate divides a cavity of the shell into a first chamber and a second chamber, a fixed frame is formed by outward protruding at the center of the partition plate, a plurality of groups of air inlet holes are formed in the outer circumferential surface of the fixed frame, and a filter screen covering the air inlet holes is wrapped on the circumferential surface of the fixed frame, when the gas in the shell enters the fixed cylinder through the communication pipe, the gas in the fixed cylinder gradually pushes the moving part to move when the pressure in the fixed cylinder is greater than the pressure of the moving part, so that the moving part drives the cleaning part to move on the surface of the filter screen, thereby cleaning the surface of the filter screen and ensuring the ventilation volume.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a permanent magnet motor and high-altitude operation application. BACKGROUND

[0002] Permanent magnet motors are widely used in various industrial and civilian fields due to their high efficiency, high power density and compact structure. In high-altitude operation, permanent magnet motors are often used in the driving system of cranes, aerial work vehicles, unmanned aerial vehicles and other equipment.

[0003] In order to ensure the internal temperature of the permanent magnet motor, a cooling fan is generally provided to cool the inside of the motor, and the dust entering the inside of the motor is intercepted through a filter screen. However, due to the high-altitude operation environment, there is usually a lot of dust and dirt, which will seriously affect the ventilation volume and thus reduce the cooling effect of the motor, not meeting the practical needs. SUMMARY

[0004] The present application provides the following technical solutions in view of the deficiencies of the prior art.

[0005] The permanent magnet motor comprises:

[0006] A shell is provided with a vertical partition plate inside, the partition plate divides the shell cavity into a first chamber and a second chamber, the center of the partition plate protrudes outward to form a fixed frame, a plurality of air inlet holes are formed on the outer circumferential surface of the fixed frame, and a filter screen covering the air inlet holes is wrapped around the circumferential surface of the fixed frame.

[0007] A cooling fan is arranged on the inner wall of the fixed frame.

[0008] A motor body is installed in the first chamber.

[0009] A plurality of cleaning assemblies are arranged in the first chamber, the cleaning assembly comprises a fixed cylinder arranged on the inner wall of the shell and located between the motor body and the partition plate, a moving piece is movably connected to the end of the fixed cylinder away from the motor body, the end of the moving piece penetrates the fixed cylinder and the partition plate in sequence and extends into the second chamber, a cleaning piece is fixedly arranged at the end of the moving piece extending into the second chamber, and the inside of the fixed cylinder is communicated with the air outlet end of the shell through a communication pipe. The gas in the shell enters the inside of the fixed cylinder through the communication pipe to drive the moving piece to move, the moving piece drives the cleaning piece to move on the surface of the fixed frame to clean the surface of the filter screen.

[0010] As an improvement of the above technical solution, a water cooling disc is vertically arranged in the first chamber and located between the cleaning assembly and the motor body, and a plurality of through holes for gas passing through are formed on the water cooling disc.

[0011] As the improvement of the above technical scheme, the moving piece comprises a piston slidingly arranged in the fixed cylinder, one end of the piston is fixedly connected with a movable rod, the end of the movable rod away from the piston penetrates the fixed cylinder and the partition plate in sequence and extends to the inside of the second cavity, the end of the movable rod extending to the inside of the second cavity is fixedly connected with a cleaning piece, and a spring is wound on the surface of the movable rod and in the fixed cylinder.

[0012] As the improvement of the above technical scheme, the cleaning piece comprises an arc-shaped plate mounted on the end of the movable rod, and the arc-shaped plate is provided with an electrostatic dust removal paper on the side adjacent to the surface of the fixed frame.

[0013] As the improvement of the above technical scheme, the cleaning assembly further comprises an annular pipe, the annular pipe is communicated with a plurality of fixed cylinders, a plurality of branch pipes are arranged on the annular pipe and face the fixed frame, and a plurality of nozzles are arranged on the branch pipes and are matched in position and number with the air outlets.

[0014] As the improvement of the above technical scheme, a support is arranged between the motor body and the shell, the support comprises a heat-conducting ring fixed on the motor body, a plurality of petal frames are integrally formed on the circumferential surface of the heat-conducting ring, the inner wall of the shell is fixedly connected with the petal frames, a reinforcing rib is integrally formed between two adjacent petal frames, and a channel for gas flow is arranged in the petal frame.

[0015] As the improvement of the above technical scheme, the application of the permanent magnet motor in the field of aerial work.

[0016] The beneficial effects of the present application are as follows:

[0017] The external air is drawn into the inside of the first cavity through the air inlet hole by the heat dissipation fan, the heat on the surface of the motor body can be taken away after the gas enters the first cavity, and the air in the shell flows from right to left under the action of the air outlet end, so that the heat dissipation efficiency of the motor body is improved. The dust in the air can be intercepted and filtered through the filter screen. When the gas enters the inside of the fixed cylinder through the communication pipe, the gas in the inside of the fixed cylinder gradually pushes the moving piece to move when the pressure in the inside of the fixed cylinder is greater than the pressure of the moving piece, so that the moving piece drives the cleaning piece to move on the surface of the filter screen, thereby cleaning the surface of the filter screen and ensuring the ventilation volume. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the overall structure of the present application.

[0019] Figure 2 It is an enlarged structure schematic view of A in the present application. Figure 1

[0020] Figure 3 ​The application is Figure 1 Amplification structure schematic diagram at B in the application

[0021] Figure 4 The application is

[0022] Figure 5 The application is

[0023] The drawings show: 10, a shell; 11, a partition; 12, a fixed frame; 121, an air inlet hole; 20, a motor body; 30, a support; 31, a heat-conducting ring; 32, a petal frame; 33, a reinforcing rib; 40, a water-cooling disc; 41, a through hole; 50, a fixed cylinder; 51, a communication pipe; 52, a piston; 53, a spring; 54, a movable rod; 55, an annular pipe; 551, a branch pipe; 552, a nozzle; 56, an arc plate; 57, an electrostatic dust removal paper; 60, a heat dissipation fan. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0025] Example one

[0026] A permanent magnet motor comprises: a shell 10, a vertical partition 11 is arranged in the shell 10, the partition 11 divides the cavity of the shell 10 into a first chamber and a second chamber, a fixed frame 12 is formed by outward protrusion at the center of the partition 11, a plurality of air inlet holes 121 are arranged on the outer circumferential surface of the fixed frame 12, and a filter screen covering the air inlet holes 121 is wrapped on the circumferential surface of the fixed frame 12; a heat dissipation fan 60 is arranged on the inner wall of the fixed frame 12; a motor body 20 is installed in the first chamber; a plurality of cleaning assemblies are arranged in the first chamber, the cleaning assembly comprises a fixed cylinder 50 arranged on the inner wall of the shell 10 and located between the motor body 20 and the partition 11, a moving part is movably connected to the end of the fixed cylinder 50 away from the motor body 20, the end of the moving part penetrates the fixed cylinder 50 and the partition 11 in sequence and extends into the second chamber, a cleaning part is fixedly arranged at the end of the moving part extending into the second chamber, the inside of the fixed cylinder 50 is communicated with the air outlet end of the shell 10 through a communication pipe 51, and the gas in the inside of the shell 10 enters the inside of the fixed cylinder 50 through the communication pipe 51 to drive the moving part to move, so that the moving part drives the cleaning part to move on the surface of the fixed frame 12 to clean the surface of the filter screen.

[0027] When working at high altitude, start the cooling fan 60, the cooling fan 60 draws the external air into the first chamber through the air inlet hole 121, and the gas can take away the heat on the surface of the motor body 20 after entering the first chamber, and the air inside the shell 10 is circulated from right to left under the action of the air outlet end, which can improve the heat dissipation efficiency of the motor body 20. The dust in the air can be intercepted and filtered through the filter screen. When the gas in the shell enters the fixed cylinder 50 through the communication pipe 51, the gas in the fixed cylinder 50 will gradually push the moving part to move when the pressure in the fixed cylinder 50 is greater than the pressure of the moving part, so that the moving part drives the cleaning part to move on the surface of the filter screen, thereby cleaning the surface of the filter screen and ensuring the ventilation volume, thereby ensuring the internal temperature of the permanent magnet motor and avoiding the problem of local overheating damage. The second chamber can protect the cleaning part from external environment interference, and the communication pipe 51 is provided with a one-way valve.

[0028] In order to improve the heat dissipation effect of the motor body 20, with reference to Figure 1 , a water cooling disc 40 is vertically arranged in the first chamber and between the cleaning assembly and the motor body 20. A plurality of through holes 41 for gas passing through are formed in the water cooling disc 40. The water cooling disc 40 is filled with cooling liquid. When the gas passes through the through holes 41, the gas is cooled by heat exchange with the water cooling disc 40. The gas around the motor body 20 is uniformly distributed through the plurality of through holes 41, effectively avoiding the problem of local overheating.

[0029] In one embodiment, with reference to Figure 1 and Figure 2 , the moving part includes a piston 52 slidingly arranged in the fixed cylinder 50. One end of the piston 52 is fixedly connected with an activity rod 54. The end of the activity rod 54 away from the piston 52 penetrates the fixed cylinder 50 and the partition plate 11 in sequence and extends to the inside of the second chamber. The end of the activity rod 54 extending to the inside of the second chamber is fixedly connected with the cleaning part. A section of the surface of the activity rod 54 and located in the inside of the fixed cylinder 50 is wound with a spring 53.

[0030] Specifically, when the gas in the shell 10 enters the fixed cylinder 50 through the communication pipe 51, the piston 52 is pushed to move when the pressure in the fixed cylinder 50 is greater than the pressure of the spring 53. The piston 52 drives the cleaning part to move through the activity rod 54, thereby cleaning the surface of the filter screen, and realizing automatic and periodic cleaning of the surface of the filter screen.

[0031] In one embodiment, with reference to Figure 5 , the cleaning part includes an arc-shaped plate 56 mounted on the end of the activity rod 54. The arc-shaped plate 56 is provided with an electrostatic dust removal paper 57 on the side adjacent to the surface of the fixed frame 12.

[0032] Specifically, the arc-shaped plate 56 is matched with the shape of the surface of the fixed frame 12, and the electrostatic dust removal paper 57 can adsorb the dust and impurities on the surface of the filter screen. After a period of time, the old electrostatic dust removal paper 57 can be torn off to expose the new electrostatic dust removal paper 57.

[0033] In one embodiment, referring to Figure 1 and Figure 3 , the cleaning assembly further comprises an annular pipe 55 in communication with a plurality of groups of the fixed cylinders 50, a plurality of branch pipes 551 are arranged on the annular pipe 55 and towards the fixed frame 12, and a plurality of nozzles 552 are arranged on the branch pipes 551 and matched in position and number with the air outlets 121.

[0034] When the piston 52 moves to one side of the annular pipe 55, the gas in the fixed cylinder 50 enters the annular pipe 55, the gas in the annular pipe 55 enters the branch pipes 551, and then is sprayed out through the nozzles 552. The gas sprayed out of the nozzles 552 directly hits the inside of the air inlet hole 121, and all the fine dust or impurities that have been accumulated therein or on the filter screen for a long time are all wrapped up and sprayed towards the outer surface of the fixed frame 12. At this time, due to the restoring elastic force of the spring 53, the piston 52 is pushed to return to the initial position after the gas in the fixed cylinder 50 enters the annular pipe 55, so that the piston 52 moves the cleaning piece towards the motor body 20 through the movable rod 54. Since the gas sprayed out of the nozzles 552 has blown the impurities away from the original place, the moving cleaning piece can adsorb and clean the dust one by one, thereby improving the cleaning effect of the surface of the filter screen. Through the cooperation of gas spraying and mechanical cleaning, the dust and impurities at the position of the filter screen can be effectively cleaned, and the surface of the filter screen can be periodically and automatically cleaned.

[0035] In one embodiment, referring to Figure 1 and Figure 4 , the motor body 20 and the shell 10 are provided with a support 30, the support 30 comprises a heat-conducting ring 31 fixed to the motor body 20, a plurality of petal frames 32 are integrally formed on the circumferential surface of the heat-conducting ring 31, the inner wall of the shell 10 is fixedly connected with the petal frames 32, a reinforcing rib 33 is integrally formed between adjacent two groups of the petal frames 32, and a channel for gas flow is formed in the petal frame 32.

[0036] The heat-conducting ring 31 can transmit the heat on the motor body 20 out, the gas can pass through the channel of the petal frame 32, so that the heat dissipation area can be increased and the heat dissipation effect can be improved, and the reinforcing rib 33 can improve the support strength of the petal frame 32, thereby effectively avoiding the problem of deformation of the petal frame.

[0037] Embodiment two

[0038] The permanent magnet motor described in the first embodiment is applied in the field of aerial work.

[0039] The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them.

Claims

1. A permanent magnet electric machine, characterized by, The utility model relates to a kind of air purifiers, including: Shell (10), the vertical partition (11) is arranged in the shell (10), the partition (11) is divided into first chamber and second chamber with the cavity of the shell (10), the fixed frame (12) is formed in the center of the partition (11) and protrudes outward, the outer circumferential surface of the fixed frame (12) is provided with multiple groups of air inlet holes (121), and the circumferential surface of the fixed frame (12) is wrapped with a layer of filter screen covering air inlet hole (121); Radiating fan (60) is arranged on the inner wall of the fixed frame (12); Motor body (20) is installed in the first chamber; Multiple cleaning assemblies are arranged in the first chamber, and the cleaning assembly includes a fixed cylinder (50) arranged on the inner wall of the shell (10) and located between the motor body (20) and the partition (11). The end of the fixed cylinder (50) away from the motor body (20) is movably connected with a moving part, the end of the moving part penetrates the fixed cylinder (50) and the partition (11) in sequence and extends into the second chamber, and a cleaning part is fixedly arranged at the end of the moving part extending into the second chamber. The inside of the fixed cylinder (50) is communicated with the gas outlet end of the shell (10) through a communication pipe (51), and the gas in the shell (10) enters the inside of the fixed cylinder (50) through the communication pipe (51) to drive the moving part to move, so that the moving part drives the cleaning part to move on the surface of the fixed frame (12) to clean the surface of the filter screen. The moving part includes a piston (52) slidingly arranged in the inside of the fixed cylinder (50), one end of the piston (52) is fixedly connected with a movable rod (54), the end of the movable rod (54) away from the piston (52) penetrates the fixed cylinder (50) and the partition (11) in sequence and extends into the inside of the second chamber, and the end of the movable rod (54) extending into the inside of the second chamber is fixedly connected with a cleaning part, and a spring (53) is wound around the section of the surface of the movable rod (54) located in the inside of the fixed cylinder (50). The cleaning part includes an arc-shaped plate (56) mounted on the end of the movable rod (54), and the side of the arc-shaped plate (56) adjacent to the surface of the fixed frame (12) is provided with an electrostatic precipitator paper.

2. The permanent magnet electric machine of claim 1, characterized by: Water-cooled disc (40) is vertically arranged in the first chamber and located between the cleaning assembly and the motor body (20), and a plurality of through holes (41) for gas passing through are formed in the water-cooled disc (40).

3. The permanent magnet electric machine of claim 1, wherein: The support (30) is arranged between the motor body (20) and the shell (10), the support (30) comprises a heat-conducting ring (31) fixed to the motor body (20), a plurality of groups of petal frames (32) integrally formed on the circumferential surface of the heat-conducting ring (31), and the inner wall of the shell (10) is fixedly connected with the petal frames (32), and a reinforcing rib (33) is integrally formed between adjacent two groups of the petal frames (32), and the petal frames (32) are provided with channels for gas flow.

4. Application of the permanent magnet motor according to claim 1 in the field of aerial work.

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