Six-slot six-pole single-phase motor for axial flow exhaust fan

Abstract

A six-groove six-pole single-phase motor for an axial flow exhaust fan relates to the technical field of motors, a six-groove iron core is arranged on the inner side of a six-pole magnetic ring, an insulating lower wire frame and an insulating upper wire frame are respectively and fixedly inserted on the front side and the rear side of the six-groove iron core, and the insulating upper wire frame is rotatably sleeved on a motor shaft through a bearing. A graphite gasket sleeves the position, located on the rear side of the insulating upper wire frame, of the motor shaft, the bearing support rotationally sleeves the motor shaft through a bearing, three supporting columns are fixedly arranged on the front side of the insulating lower wire frame, and a circuit board is fixedly arranged on the three supporting columns; a first clamping ring and a second clamping ring are clamped in a front clamping groove and a rear clamping groove formed in a motor shaft respectively, a machine shell abuts against the rear side of a bearing support, and three internal threaded columns are fixedly arranged on the rear side wall of the bearing support, so that the loading performance of the axial flow fan can be improved, vibration and noise of the motor can be improved, and the service life of the motor is prolonged. And meanwhile, the motor can be conveniently disassembled and assembled, and the convenience of motor maintenance is improved.

Description

A six-slot, six-pole single-phase motor for axial exhaust fans Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a six-slot, six-pole single-phase motor for axial flow exhaust fans. Background Technology

[0002] Most axial exhaust fans on the market currently use single-phase motors with four slots and four pole pairs. Due to the limited number of slots and poles, the magnetic field distribution of the motor is uneven, resulting in low starting torque. When users replace the fan blades with larger ones to increase airflow, the motor often experiences starting difficulties or even stalling due to the increased load, seriously affecting the reliability of the equipment. In addition, in traditional motors, the connection between the housing and end cover or bearing bracket and other components is fixed with multiple bolts. However, during motor maintenance, all bolts need to be tightened sequentially, making the maintenance process cumbersome and inconvenient. Therefore, there is an urgent need for a six-slot, six-pole single-phase motor for axial exhaust fans. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of the existing technology by providing a reasonably designed six-slot, six-pole, single-phase motor for axial flow exhaust fans, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it comprises an iron shell and a motor shaft, with the motor shaft fixedly inserted inside the iron shell;

[0005] It also includes:

[0006] A six-pole magnetic ring is fixedly installed inside an iron shell. The six-pole magnetic ring has a six-slot iron core on its inner side. An insulating lower wire frame and an insulating upper wire frame are fixedly inserted on the front and rear sides of the six-slot iron core, respectively. The insulating upper wire frame is rotatably mounted on the motor shaft through a bearing. A graphite gasket is mounted on the motor shaft at the rear position of the insulating upper wire frame.

[0007] The bearing bracket is rotatably mounted on the motor shaft via the bearing, and the bearing bracket is fixedly inserted into the insulating lower wire frame and the six-slot iron core. Three support columns are fixedly installed on the front side of the insulating lower wire frame, and circuit boards are fixedly installed on the three support columns.

[0008] A waveform gasket is provided inside the bearing bracket, and a first retaining ring and a second retaining ring are respectively inserted into the front and rear slots on the motor shaft.

[0009] The housing is located at the rear of the bearing bracket, and both the iron shell and the circuit board are located inside the housing. Three internally threaded posts are fixedly installed on the rear side wall of the bearing bracket, and the housing is equipped with a convenient disassembly and assembly mechanism that connects to the internally threaded posts.

[0010] Furthermore, the convenient assembly / disassembly mechanism includes:

[0011] The fixed frame is fixedly installed inside the housing. Three fixed posts are fixedly installed on the front side wall of the fixed frame and are fixedly connected to the inner wall of the housing. The internal threaded post is movably inserted into the slot opened at the front end of the fixed post.

[0012] The threaded rod consists of three threaded rods, which are movably disposed within three fixed posts. The front end of the threaded rod is inserted into the internal threaded post by rotating the thread. A limiting ring is fixedly sleeved on the threaded rod, and the limiting ring is movably abutting against the fixed post.

[0013] The springs are three in number and are respectively fixedly installed in three threaded rods. A drive rod is rotatably installed in the fixed column through a bearing. One end of the drive rod is movably inserted into the threaded rod and fixedly connected to the spring. The other end of the drive rod is rotatably inserted into the fixed frame and fixedly fitted with a gear.

[0014] The gear ring is rotatably mounted in the fixed frame via a bearing and meshes with three gears. A through hole is provided on the rear side wall of the housing, and a cross cap is rotatably mounted in the through hole. The cross cap is fixedly connected to the end of the lower drive rod.

[0015] Furthermore, a sealing block is provided inside the through hole, and a connecting rope is fixedly provided on the sealing block, and the connecting rope is fixedly connected to the rear side wall of the housing.

[0016] Furthermore, a bearing seat is fixedly provided on the inner wall of the housing, and the rear end of the motor shaft is inserted into the bearing seat.

[0017] Furthermore, heat-conducting plates are fixedly installed on the left and right inner sidewalls of the housing, and several heat dissipation plates are fixedly inserted on both sides of the housing, with the heat dissipation plates and heat-conducting plates fixedly connected.

[0018] Furthermore, two positioning angles are provided at the upper rear side of the bearing bracket, and the positioning angles are abutted in the positioning grooves opened on the housing.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the six-slot six-pole single-phase motor for axial flow exhaust fans described in this utility model can not only improve the load-bearing performance of axial flow fans, but also improve the vibration and noise of the motor, while enabling convenient disassembly and assembly of the motor and improving the convenience of motor maintenance. Attached Figure Description

[0020] Figure 1 is a structural schematic diagram of this utility model.

[0021] Figure 2 is a cross-sectional view of the iron shell, hexagonal magnetic ring, six-slot iron core, insulating lower wire frame, insulating upper wire frame and bearing bracket in this utility model.

[0022] Figure 3 is an exploded view of the parts of this utility model, including the iron shell, motor shaft, six-pole magnetic ring, six-slot iron core, insulating lower wire frame, and insulating upper wire frame.

[0023] Figure 4 is an exploded view of the components of the housing, internal threaded column, convenient disassembly and assembly mechanism, and heat conduction plate in this utility model.

[0024] Figure 5 is an enlarged view of part A in Figure 4.

[0025] Figure 6 is an exploded view of the internal threaded column, fixed column, threaded rod and limiting ring in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Iron shell, 2. Motor shaft, 3. Hexagonal magnetic ring, 4. Six-slot iron core, 5. Insulated lower wire frame, 6. Insulated upper wire frame, 7. Graphite gasket, 8. Bearing bracket, 9. Support column, 10. Circuit board, 11. Waveform gasket, 12. No. 1 retaining ring, 13. No. 2 retaining ring, 14. Housing, 15. Internal threaded column, 16. Convenient disassembly and assembly mechanism, 16-1. Fixing bracket, 16-2. Threaded rod, 16-3. Limiting ring, 16-4. Spring, 16-5. Drive rod, 16-6. Gear, 16-7. Gear ring, 16-8. Cross cap, 16-9. Slot, 17. Through hole, 18. Sealing block, 19. Connecting rope, 20. Bearing seat, 21. Heat-conducting plate, 22. Heat sink, 23. Positioning angle, 24. Positioning groove, 25. Detailed Implementation

[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] As shown in Figures 1-6, the specific embodiment adopts the following technical solution: it includes an iron shell 1 and a motor shaft 2, with the motor shaft 2 fixedly inserted inside the iron shell 1;

[0030] It also includes:

[0031] A six-pole magnetic ring 3 is fixedly installed inside the iron shell 1. A six-slot iron core 4 is provided on the inner side of the six-pole magnetic ring 3. An insulating lower wire frame 5 and an insulating upper wire frame 6 are fixedly inserted on the front and rear sides of the six-slot iron core 4, respectively. The insulating upper wire frame 6 is rotatably sleeved on the motor shaft 2 through bearings. A graphite gasket 7 is sleeved on the motor shaft 2 at the rear side of the insulating upper wire frame 6. By setting the six-pole magnetic ring 3 and the six-slot iron core 4, the number of slots and the number of pole pairs can be increased accordingly, which can make the magnetic field distribution of the motor more uniform, the energy conversion efficiency of the motor is high, and the service life of the motor is long.

[0032] The bearing bracket 8 is rotatably mounted on the motor shaft 2 via a bearing, and the bearing bracket 8 is fixedly inserted into the insulating lower wire frame 5 and the six-slot iron core 4. Three support columns 9 are fixedly installed on the front side of the insulating lower wire frame 5, and circuit boards 10 are fixedly installed on the three support columns 9.

[0033] Waveform gasket 11, the waveform gasket 11 is provided in the bearing bracket 8, and the first retaining ring 12 and the second retaining ring 13 are respectively locked in the front and rear slots opened on the motor shaft 2.

[0034] The housing 14 is abutting against the rear side of the bearing bracket 8, and both the iron shell 1 and the circuit board 10 are located inside the housing 14. Three internally threaded posts 15 are fixedly installed on the rear side wall of the bearing bracket 8. The housing 14 is equipped with a convenient disassembly and assembly mechanism 16 that connects to the internally threaded posts 15. Heat-conducting plates 22 are fixedly installed on both the left and right inner side walls of the housing 14. Several heat dissipation plates 23 are fixedly inserted into both the left and right sides of the housing 14, and the heat dissipation plates 23 are fixedly connected to the heat-conducting plates 22. Through the cooperation of the heat-conducting plates 22 and the heat dissipation plates 23, heat can be dissipated while ensuring that the inside of the housing 14 is sealed. The motor shaft 2 is led out to the outside of the housing 14 to improve the heat dissipation performance of the motor. A bearing seat 21 is fixedly installed on the inner wall of the housing 14. The rear end of the motor shaft 2 is inserted into the bearing seat 21. The bearing seat 21 can provide auxiliary support for the rear end of the motor shaft 2, thereby effectively improving the rotational stability of the motor shaft 2. Two positioning angles 24 are provided at the upper rear side of the bearing bracket 8, and the positioning angles 24 are abutted in the positioning grooves 25 opened on the housing 14. The positioning angles 24 can not only realize the connection and positioning between the bearing bracket 8 and the housing 14, but also make the connection between the bearing bracket 8 and the housing 14 more stable.

[0035] The convenient disassembly and assembly mechanism 16 includes:

[0036] The fixing frame 16-1 is fixedly installed inside the housing 14. Three fixing posts 16-2 are fixedly installed on the front side wall of the fixing frame 16-1, and the fixing posts 16-2 are fixedly connected to the inner wall of the housing 14. The internal threaded post 15 is movably inserted into the slot 17 opened at the front end of the fixing post 16-2.

[0037] The threaded rod 16-3 consists of three parts, which are movably disposed within three fixed posts 16-2. The front end of the threaded rod 16-3 is inserted into the internal thread post 15 by threaded rotation. A limiting ring 16-4 is fixedly sleeved on the threaded rod 16-3, and the limiting ring 16-4 is movably abutting against the fixed post 16-2.

[0038] Spring 16-5, there are three springs 16-5, which are respectively fixedly installed in three threaded rods 16-3. A drive rod 16-6 is rotatably installed in the fixed column 16-2 through a bearing. One end of the drive rod 16-6 is movably inserted into the threaded rod 16-3 and fixedly connected to the spring 16-5. The other end of the drive rod 16-6 is rotatably inserted into the fixed frame 16-1 and fixedly fitted with a gear 16-7.

[0039] A gear ring 16-8 is rotatably mounted in a fixed frame 16-1 via a bearing, and meshes with three gears 16-7. A through hole 18 is provided on the rear side wall of the housing 14, and a cross cap 16-9 is rotatably mounted in the through hole 18. The cross cap 16-9 is fixedly connected to the end of the lower drive rod 16-6. By utilizing the cooperation of the gears 16-7, the gear ring 16-8, and the drive rod 16-6, the three threaded rods 16-3 can be rotated synchronously, thereby saving the disassembly and assembly time of the bearing bracket 8 and the housing 14 and improving maintenance efficiency. A sealing block 19 is abutted in the through hole 18, and a connecting rope 20 is fixedly mounted on the sealing block 19 and fixedly connected to the rear side wall of the housing 14. The sealing block 19 can seal the inside of the through hole 18 to prevent liquids from entering the through hole 18 and corroding the cross cap 16-9.

[0040] When using this utility model, remove the sealing block 19 from the through hole 18, and use a Phillips screwdriver to turn the Phillips cap 16-9. The Phillips cap 16-9 drives the drive rod 16-6 connected to it to rotate. With the cooperation of the gear 16-7 and the gear ring 16-8, the three drive rods 16-6 rotate synchronously. The drive rod 16-6 can drive the threaded rod 16-3 to rotate, so that the threaded rod 16-3 moves out of the internal threaded post 15 and compresses the spring 16-5. Then the bearing bracket 8 and the housing 14 can be pulled in opposite directions, so that the internal threaded post 15 disengages from the slot 17. During this process, the spring 16-5 will apply a forward thrust to the internal threaded post 15 through the threaded rod 16-3, making the disassembly of the bearing bracket 8 and the housing 14 easier.

[0041] Compared with the prior art, the beneficial effects of this utility model are:

[0042] By precisely matching the six-pole magnetic ring 3 and the six-slot iron core 4, the load-carrying performance is improved, while the uniformity of the motor's magnetic field distribution is also ensured, which improves the sinusoidal nature of the motor's magnetic field and further reduces the motor's vibration and noise.

[0043] With the cooperation of the convenient disassembly and assembly mechanism 16, the meshing of the gear ring 16-8 and the three gears 16-7 can realize the synchronous drive of the three threaded rods 16-3, thereby improving the disassembly and assembly effect of the housing 14 and the bearing bracket 8, making motor maintenance more convenient.

[0044] By combining the heat-conducting plate 22 and the heat dissipation plate 23, heat can be dissipated to the outside of the housing 14 while ensuring that the inside of the housing 14 is sealed, thereby improving the heat dissipation performance of the motor.

[0045] The positioning angle 24 not only enables the connection and positioning between the bearing bracket 8 and the housing 14, but also makes the connection between the bearing bracket 8 and the housing 14 more stable.

[0046] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A six-slot, six-pole single-phase motor for an axial flow exhaust fan, comprising an iron shell (1) and a motor shaft (2), wherein the motor shaft (2) is fixedly inserted inside the iron shell (1); characterized in that, It also includes: a hexagonal magnetic ring (3), which is fixedly installed inside the iron shell (1). The hexagonal magnetic ring (3) has a six-slot iron core (4) on its inner side. An insulating lower wire frame (5) and an insulating upper wire frame (6) are fixedly inserted on the front and rear sides of the six-slot iron core (4), respectively. The insulating upper wire frame (6) is rotatably mounted on the motor shaft (2) through a bearing. A graphite gasket (7) is mounted on the motor shaft (2) at the rear side of the insulating upper wire frame (6); a bearing bracket (8), which is rotatably mounted on the motor shaft (2) through a bearing. The bearing bracket (8) is fixedly inserted inside the insulating lower wire frame (5) and the six-slot iron core (4). The insulating lower wire frame (5) has a six-slot iron core (4) on its inner side. Three support columns (9) are fixedly installed on the front side, and a circuit board (10) is fixedly installed on the three support columns (9); a wave-shaped gasket (11) is installed in the bearing bracket (8), and a first retaining ring (12) and a second retaining ring (13) are respectively installed in the front and rear slots opened on the motor shaft (2); a housing (14) is abutted on the rear side of the bearing bracket (8), and the iron shell (1) and the circuit board (10) are both installed in the housing (14). Three internal threaded columns (15) are fixedly installed on the rear side wall of the bearing bracket (8), and a convenient disassembly and assembly mechanism (16) for connecting with the internal threaded columns (15) is provided in the housing (14).

2. A six-slot, six-pole single-phase motor for an axial flow exhaust fan according to claim 1, characterized in that: The convenient disassembly and assembly mechanism (16) includes: a fixing frame (16-1), which is fixedly installed inside the housing (14). Three fixing posts (16-2) are fixedly installed on the front side wall of the fixing frame (16-1), and the fixing posts (16-2) are fixedly connected to the inner wall of the housing (14). An internal threaded post (15) is movably inserted into a slot (17) opened at the front end of the fixing post (16-2); a threaded rod (16-3), which consists of three threaded rods (16-3), which are movably installed in the three fixing posts (16-2). The front end of the threaded rod (16-3) is inserted into the internal threaded post (15) by threaded rotation. A limiting ring (16-4) is fixedly sleeved on the threaded rod (16-3), and the limiting ring (16-4) is movably abutting against the fixing post (16-2); and a spring (16-5). There are three springs (16-5), which are fixedly installed in three threaded rods (16-3). A drive rod (16-6) is rotatably installed in the fixed column (16-2) through a bearing. One end of the drive rod (16-6) is movably inserted into the threaded rod (16-3) and fixedly connected to the spring (16-5). The other end of the drive rod (16-6) is rotatably inserted into the fixed frame (16-1) and fixedly fitted with a gear (16-7). A gear ring (16-8) is rotatably installed in the fixed frame (16-1) through a bearing, and the gear ring (16-8) meshes with the three gears (16-7). A through hole (18) is opened on the rear side wall of the housing (14). A cross cap (16-9) is rotatably installed in the through hole (18). The cross cap (16-9) is fixedly connected to the end of the drive rod (16-6) below.

3. A six-slot, six-pole single-phase motor for an axial flow exhaust fan according to claim 2, characterized in that: A sealing block (19) is provided in the through hole (18), and a connecting rope (20) is fixedly provided on the sealing block (19), and the connecting rope (20) is fixedly connected to the rear side wall of the housing (14).

4. A six-slot, six-pole single-phase motor for an axial flow exhaust fan according to claim 1, characterized in that: A bearing seat (21) is fixedly installed on the inner wall of the housing (14), and the rear end of the motor shaft (2) is inserted into the bearing seat (21).

5. A six-slot, six-pole single-phase motor for an axial flow exhaust fan according to claim 1, characterized in that: Heat-conducting plates (22) are fixedly installed on the left and right inner walls of the casing (14), and several heat dissipation plates (23) are fixedly inserted on the left and right sides of the casing (14), and the heat dissipation plates (23) are fixedly connected to the heat-conducting plates (22).

6. A six-slot, six-pole single-phase motor for an axial flow exhaust fan according to claim 1, characterized in that: The bearing bracket (8) is provided with two positioning angles (24) at the upper rear side, and the positioning angles (24) are abutted in the positioning groove (25) opened on the housing (14).

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