CN210350940U - Outer rotor permanent magnet motor for axial flow fan - Google Patents
Outer rotor permanent magnet motor for axial flow fan Download PDFInfo
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- CN210350940U CN210350940U CN201921616582.0U CN201921616582U CN210350940U CN 210350940 U CN210350940 U CN 210350940U CN 201921616582 U CN201921616582 U CN 201921616582U CN 210350940 U CN210350940 U CN 210350940U
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- rotor
- lead wire
- cover
- permanent magnet
- axial flow
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Abstract
The outer rotor permanent magnet motor for the axial flow fan comprises a rotor outer barrel, rotor magnetic steel, a stator core, a stator coil, a machine shaft, a front end cover, a front bearing, a front outer cover, a rear end cover, a rear bearing and a rear outer cover, wherein two ends of the machine shaft are respectively fixed with the rotor outer barrel in a rotating mode through the front end cover, the front bearing, the front outer cover, the rear end cover, the rear bearing and the rotor outer barrel; a front support and a rear support which are used for being fixed with external equipment are fixed at the left end and the right end of a crankshaft through screws, and a plurality of groups of fans can be simultaneously installed on a rotor outer cylinder. The utility model discloses close rotor urceolus and fan pivot as an organic whole, the multistage impeller of installation, step by step the pressure boost, can make up out high wind pressure, large-traffic axial fan.
Description
Technical Field
The utility model relates to a permanent-magnet motor especially relates to outer rotor permanent-magnet motor for axial fan, belongs to motor technical field.
Background
At present, most of axial flow fans are driven by universal motors, impellers of the fans are arranged on shaft extension ends of the motors, and one motor can only be provided with one impeller under normal conditions. When larger air volume or air pressure is needed, a fan with larger model or power is selected; secondly, the number of the motors is increased, and a multi-stage fan is installed. Therefore, the size is inevitably large, and after the motors are connected in series, the power and the efficiency of the front-stage fan and the rear-stage fan are difficult to design and match, and the efficiency is poor. Therefore, the design of a novel driving motor which has compact structure, high efficiency, high wind pressure, large flow and low noise and is suitable for an axial flow fan is a technical problem to be solved at present.
Disclosure of Invention
The utility model aims to solve the technical problem that a novel driving motor suitable for axial fan of compact structure, high efficiency, high wind pressure, large-traffic, low noise is provided.
The technical proposal of the utility model for solving the technical problem is that:
the outer rotor permanent magnet motor for the axial flow fan comprises a rotor outer barrel, rotor magnetic steel, a stator core, a stator coil, a machine shaft, a front end cover, a front bearing, a front outer cover, a rear end cover, a rear bearing and a rear outer cover, wherein two ends of the machine shaft are respectively fixed with the rotor outer barrel in a rotating mode through the front end cover, the front bearing, the front outer cover, the rear end cover, the rear bearing and the rotor outer barrel; a front support and a rear support which are used for being fixed with external equipment are fixed at the left end and the right end of a crankshaft through screws, and a plurality of groups of fans can be simultaneously installed on a rotor outer cylinder.
As the utility model discloses an optimal scheme is equipped with the motor and goes out the spool between the lead wire inclined hole on the hollow shaft wall and the lead wire hole on the flange of working a telephone switchboard, and in the lead wire inclined hole of the one end welding on the hollow shaft wall of motor play spool, the other end welding of motor play spool led out the spool in the lead wire hole on the flange of working a telephone switchboard, and the lead wire of motor is drawn forth through the motor play spool.
As an optimized proposal of the utility model, a front dustproof ring is arranged in the groove of the front outer cover, and a rear dustproof ring is arranged in the groove of the rear outer cover.
As an optimized scheme of the utility model, stator core pressure equipment fix at the middle part of spindle, the stator coil inlays the inslot at stator core.
As an optimized scheme of the utility model, the rotor magnet steel fix the interior circle at the rotor urceolus, and leave the air gap between rotor magnet steel and the stator core.
As a preferred scheme of the utility model, a heat dissipation device is arranged in the hollow of the crankshaft; the heat radiator consists of a mandrel and heat radiating fins welded on the mandrel, and the outer diameter of the heat radiator is slightly larger than the inner diameter of the crankshaft, namely the heat radiator is in interference fit with the inner wall of the crankshaft, namely the heat radiator is pressed in an inner hole of the crankshaft.
As a preferred scheme of the utility model, the fin be the wave form.
Compared with the prior art, the utility model integrates the rotor outer cylinder and the fan rotating shaft into a whole, and has compact structure; by utilizing the characteristics of slender axial direction and large multiplying power ratio, the rotor outer cylinder is a fan mounting shaft and is used for mounting a multi-stage impeller, so that the axial flow fan with high air pressure and large flow can be combined by step pressurization; the shaft of the motor is a hollow shaft, the radiating fins are embedded in the shaft holes, and when the motor works, the inner hole of the shaft forms cooling airflow by utilizing the air pressure difference between the inlet end and the outlet end of the axial flow fan, and the cooling airflow blows through the radiating fins to take out heat generated by the stator. And simultaneously, the utility model has the characteristics of compact structure, light in weight, efficient, longe-lived, be a neotype axial fan actuating motor, extensively be applicable to facilities such as axial fan, tunnel ventilation unit, have extensive popularization and application market prospect.
Drawings
Fig. 1 is a front view of the structure diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a schematic diagram of the air cooling system in the motor shaft of the outer rotor permanent magnet motor of the utility model.
In the figure: 1. the motor comprises a front support, 2. a front outer cover, 3. a front bearing, 4. a front end cover, 5. a rotor outer cylinder, 6. a rotor magnetic steel, 7. a stator core, 8. a machine shaft, 9. a stator coil, 10. a rear end cover, 11. a rear bearing, 12. a rear outer cover, 13. a rear support, 14. a screw, 15. a dust ring, 16. a mandrel, 17. a cooling fin, 18. a wire outlet pipe, 19. the dust ring, 20. a motor lead and 21. a wire outlet flange.
Detailed Description
The outer rotor permanent magnet motor for the axial flow fan comprises a rotor outer cylinder 5, rotor magnetic steel 6, a stator core 7, a stator coil 9, a machine shaft 8, a front end cover 4, a front bearing 3, a front outer cover 2, a rear end cover 10, a rear bearing 11 and a rear outer cover 12, wherein two ends of the machine shaft 8 are respectively fixed with the rotor outer cylinder 5 through the front end cover 4, the front bearing 3, the front outer cover 2, the rear end cover 10, the rear bearing 11 and the rear outer cover 12 in a rotating mode, the machine shaft 8 is a hollow shaft, a wiring flange 21 used for being connected with an external wiring box is welded on the inner wall of the hollow shaft of a wiring leading-out end, a lead inclined hole is formed in the wall of the hollow shaft, and a lead of the motor is led out through the lead inclined hole in the wall of the; a front support 1 and a rear support 13 for fixing with external equipment are fixed at the left end and the right end of a machine shaft 8 through screws 14, and a plurality of groups of fans can be simultaneously installed on a rotor outer cylinder 5.
A motor wire outlet pipe 18 is arranged between a lead wire inclined hole in the wall of the hollow shaft and a lead wire hole in the wiring flange 21, one end of the motor wire outlet pipe 18 is welded in the lead wire inclined hole in the wall of the hollow shaft, the other end of the motor wire outlet pipe 18 is welded in the lead wire hole in the wiring flange 21, and a lead wire of the motor is led out through the motor wire outlet pipe 18.
A front dust ring 19 is arranged in the groove of the front outer cover 2, and a rear dust ring 15 is arranged in the groove of the rear outer cover 12.
The stator core 7 is fixed in the middle of the crankshaft 8 by press fitting, and the stator coil 9 is embedded in a groove of the stator core 7.
The rotor magnetic steel 6 is fixed on the inner circle of the rotor outer cylinder 5, and an air gap is reserved between the rotor magnetic steel 6 and the stator iron core 7.
A heat dissipation device is arranged in the hollow of the crankshaft 8; the heat sink is composed of a mandrel 16 and a heat sink 17 welded to the mandrel 16, and the outer diameter of the heat sink is slightly larger than the inner diameter of the crankshaft 8, i.e., the heat sink is in interference fit with the inner wall of the crankshaft 8, i.e., the heat sink is press-fitted into the inner hole of the crankshaft 8.
The radiating fins 17 of the outer rotor permanent magnet motor for the axial flow fan are wave-shaped.
Claims (7)
1. An outer rotor permanent magnet motor for an axial flow fan comprises a rotor outer cylinder (5), rotor magnetic steel (6), a stator core (7), a stator coil (9), a machine shaft (8), a front end cover (4), a front bearing (3), a front outer cover (2), a rear end cover (10), a rear bearing (11) and a rear outer cover (12), wherein two ends of the machine shaft (8) are respectively fixed with the rotor outer cylinder (5) in a rotating way through the front end cover (4), the front bearing (3), the front outer cover (2), the rear end cover (10), the rear bearing (11) and the rear outer cover (12), it is characterized in that the machine shaft (8) is a hollow shaft, a wiring flange (21) used for connecting an external wiring box is welded on the inner wall of the hollow shaft of the wiring leading-out end, lead wire inclined holes are formed in the wall of the hollow shaft, lead wire holes are formed in the wiring flange (21), and a lead wire of the motor is led out through the lead wire inclined holes in the wall of the hollow shaft and the lead wire holes in the wiring flange (21); a front support (1) and a rear support (13) which are used for being fixed with external equipment are fixed at the left end and the right end of a crankshaft (8) through screws (14), and a plurality of groups of fans can be simultaneously installed on a rotor outer cylinder (5).
2. The outer rotor permanent magnet motor for the axial flow fan according to claim 1, wherein a motor outlet tube (18) is provided between a lead wire inclined hole on the wall of the hollow shaft and a lead wire hole on the wiring flange (21), one end of the motor outlet tube (18) is welded in the lead wire inclined hole on the wall of the hollow shaft, the other end of the motor outlet tube (18) is welded in the lead wire hole on the wiring flange (21), and the lead wire of the motor is led out through the motor outlet tube (18).
3. The external rotor permanent magnet motor for the axial flow fan according to claim 1, wherein a front dust ring (19) is installed in a groove of the front external cover (2), and a rear dust ring (15) is installed in a groove of the rear external cover (12).
4. The external rotor permanent magnet motor for the axial flow fan according to claim 1, wherein the stator core (7) is fixed in the middle of the crankshaft (8) by press fitting, and the stator coil (9) is embedded in a groove of the stator core (7).
5. The external rotor permanent magnet motor for the axial flow fan according to claim 1, wherein the rotor magnetic steel (6) is fixed on the inner circle of the rotor outer cylinder (5), and an air gap is left between the rotor magnetic steel (6) and the stator core (7).
6. The external rotor permanent magnet motor for axial flow fan according to claim 1, wherein a heat sink is provided in the hollow of the shaft (8); the heat dissipation device is composed of a mandrel (16) and heat dissipation fins (17) welded on the mandrel (16), the outer diameter of the heat dissipation device is slightly larger than the inner diameter of the crankshaft (8), namely the heat dissipation device is in interference fit with the inner wall of the crankshaft (8), namely the heat dissipation device is pressed in an inner hole of the crankshaft (8).
7. The external rotor permanent magnet motor for the axial flow fan according to claim 6, wherein the heat radiating fins (17) are wave-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616582.0U CN210350940U (en) | 2019-09-26 | 2019-09-26 | Outer rotor permanent magnet motor for axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616582.0U CN210350940U (en) | 2019-09-26 | 2019-09-26 | Outer rotor permanent magnet motor for axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210350940U true CN210350940U (en) | 2020-04-17 |
Family
ID=70178229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921616582.0U Active CN210350940U (en) | 2019-09-26 | 2019-09-26 | Outer rotor permanent magnet motor for axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210350940U (en) |
-
2019
- 2019-09-26 CN CN201921616582.0U patent/CN210350940U/en active Active
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