CN219812036U - High-speed permanent magnet variable frequency motor - Google Patents
High-speed permanent magnet variable frequency motor Download PDFInfo
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- CN219812036U CN219812036U CN202321133965.9U CN202321133965U CN219812036U CN 219812036 U CN219812036 U CN 219812036U CN 202321133965 U CN202321133965 U CN 202321133965U CN 219812036 U CN219812036 U CN 219812036U
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- end cover
- permanent magnet
- variable frequency
- motor
- frequency motor
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- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a high-speed permanent magnet variable frequency motor, including the frame, the stator, the rotor, pivot and two end covers, set up the rotor in the pivot, set up the stator in the frame, the rotor cooperation is installed in the inside of stator, the both ends of frame all set up the end cover, be equipped with bearing assembly in the end cover, the pivot passes through bearing assembly and rotates with the end cover to be connected, the bearing assembly that is located the pivot axle and stretches to be provided with the radial recess that distributes of a plurality of circumferences on the end cover that is located the pivot axle and stretches to be equipped with the exhaust hole of a plurality of circumferences distribution on the end cover of recess, the exhaust hole is linked together with the recess, it has solved current motor and has because of the defect of its structure, thereby when motor and centrifugal fan are supporting to use, the work efficiency that leads to the motor is lower, life is shorter technical problem, but wide application in motor technical field.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a high-speed permanent magnet variable frequency motor.
Background
High speed motors are typically motors with rotational speeds exceeding 10000 r/min. Because of the high rotating speed, small volume, small moment of inertia and other reasons of the high-speed motor, the high-speed motor has the advantages of high power density, high transmission efficiency, low noise, quick dynamic response, effective material saving and the like, and is widely applied to the fields of medical appliances, fine chemical engineering, food processing, metal processing, plastic processing, woodworking and the like.
Because the rotating speed of the high-speed motor is higher, compared with the common motor, the high-speed motor has higher requirements on heat dissipation and vibration. The utility model patent with application number 202022584728.7 discloses a motor with double bearings, wherein the motor rotor is installed by adopting two parallel bearings at the extending end of the motor rotor, so that the straightness of the motor rotor is better, the clearance between the motor rotor and the bearings is small, the radial runout of the motor rotor is greatly reduced, and the motor is small in vibration and noise during working. However, when the motor is matched with the centrifugal fan, redundant high-pressure gas between the impeller of the centrifugal fan and the end cover of the motor easily enters the motor, so that the temperature of each component in the motor is increased, the working efficiency of the motor is reduced, and the service life of the motor is also influenced.
Based on the above situation, the utility model designs a high-speed permanent magnet variable frequency motor.
Disclosure of Invention
The utility model aims to provide a high-speed permanent magnet variable frequency motor, which aims to solve the technical problems of lower working efficiency and shorter service life of the motor when the motor is matched with a centrifugal fan for use due to the structural defect of the existing motor.
The embodiment of the utility model provides a high-speed permanent magnet variable frequency motor, which comprises a base, a stator, a rotor, a rotating shaft and two end covers, wherein the rotor is arranged on the rotating shaft, the stator is arranged in the base, the rotor is installed in the stator in a matched mode, the end covers are arranged at two ends of the base, bearing assemblies are arranged in the end covers, the rotating shaft is rotationally connected with the end covers through the bearing assemblies, the bearing assemblies on the shaft extension end of the rotating shaft are arranged in a double-bearing mode, a plurality of grooves which are distributed in a radial mode are arranged on the end covers on the shaft extension end of the rotating shaft, a plurality of exhaust holes which are distributed in a circumferential mode are arranged on the outer ring of each groove, and the exhaust holes are communicated with the grooves.
In one embodiment, the end cover at the shaft extension end of the rotating shaft is a flange end cover, and the flange end cover is provided with the groove and the exhaust hole.
In one embodiment, the bearing assembly on the shaft extension end of the rotating shaft is two angular contact ball bearings arranged in series.
In one embodiment, the bearing assembly on the non-shaft extending end of the rotating shaft is an angular contact ball bearing, and a wave spring is arranged between the angular contact ball bearing and the end cover.
In one embodiment, a fan is arranged at the non-shaft extending end of the rotating shaft, a fan cover is arranged on the outer side of the fan, and the fan cover is connected with the base.
In one embodiment, the stand is made of aluminum.
In one embodiment, the base is provided with a connector lug.
In one embodiment, the connector is sleeved with a cable waterproof lock, a thread sleeve is arranged on the outer side of the cable waterproof lock, the cable waterproof lock is connected with the base through the thread sleeve, the connector is sleeved with a corrugated pipe, and the corrugated pipe is connected with the cable waterproof lock.
The utility model provides a high-speed permanent magnet variable frequency motor, which has the beneficial effects that: by arranging a plurality of grooves and exhaust holes on the end cover at the shaft extension end of the rotating shaft, when the motor is matched with the centrifugal fan for use, redundant high-pressure gas between the impeller of the centrifugal fan and the end cover of the motor is exhausted through the grooves and the exhaust holes, so that the local temperature rise of the motor is effectively reduced, the redundant high-pressure gas is prevented from entering the motor, the reliability and the safety of the motor are improved, and the service life of the motor is prolonged; the utility model has small volume and good heat dissipation effect, improves the working efficiency and prolongs the service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an overall cross-sectional structure of a high-speed permanent magnet variable frequency motor according to an embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of the structure of the high-speed permanent magnet variable frequency motor shown in FIG. 1 at A;
FIG. 3 is an enlarged schematic view of the structure of a high-speed permanent magnet variable frequency motor shown in FIG. 1 at B;
fig. 4 is a schematic structural view of a flange end cover of the high-speed permanent magnet variable frequency motor shown in fig. 1.
The symbols in the drawings illustrate:
1. a base; 2. a stator; 3. a rotor; 4. a rotating shaft; 5. a first end cap; 6. a second end cap; 7. a first bearing assembly; 8. a second bearing assembly; 9. an exhaust hole; 10. a wave spring; 11. a fan; 12. a fan housing; 13. a connector lug; 14. waterproof lock of the cable; 15. a thread sleeve; 16. a bellows; 17. a groove.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It should be noted that, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not to be construed as indicating or implying that the apparatus or element in question must be provided with a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
Referring to fig. 1, a schematic overall sectional structure of a high-speed permanent magnet variable frequency motor according to an embodiment of the present utility model is shown, for convenience of explanation, only the portions related to the embodiment are shown, and the details are as follows:
in one embodiment, please combine fig. 2-4, a high-speed permanent magnet variable frequency motor, including a machine base 1, a stator 2, a rotor 3, a rotating shaft 4 and two end covers, wherein the rotor 3 is arranged on the rotating shaft 4, the stator 2 is arranged in the machine base 1, the rotor 3 is cooperatively installed in the stator 2, the two ends of the machine base 1 are respectively provided with end covers, the two end covers are respectively provided with a first end cover 5 and a second end cover 6, the two end covers are respectively provided with a first bearing component 7 and a second bearing component 8, the end cover at the shaft extension end of the rotating shaft 4 is a first end cover 5, the first end cover 5 is internally provided with a first bearing component 7, the end cover at the non-shaft extension end of the rotating shaft 4 is a second end cover 6, the second end cover 6 is internally provided with a second bearing component 8, the two ends of the rotating shaft 4 are respectively connected with the first end cover 5 and the second end cover 6 in a rotating manner through the first bearing component 7 and the second bearing component 8, and the first bearing component 7 is a double bearing arrangement; be equipped with the radial recess 17 of distributing of a plurality of circumferences on the first end cover 5, the outer lane of recess 17 is equipped with the exhaust hole 9 of a plurality of circumferences distribution, exhaust hole 9 is linked together with recess 17, through setting up a plurality of recesses 17 and exhaust hole 9 on first end cover 5, when the motor is supporting with centrifugal fan to use, unnecessary high-pressure gas between centrifugal fan's impeller and the first end cover 5 is discharged through recess 17 and exhaust hole 9, reduced the local temperature rise of motor effectively, and prevent unnecessary high-pressure gas to get into inside the motor, the reliability and the security of motor work have been improved, the life of motor has been prolonged.
Specifically, referring to fig. 4, the first end cap 5 is configured as a flange end cap, so as to be convenient to connect and detach with external loads; the flange end cover is provided with the grooves 17 and the exhaust holes 9, the grooves 17 and the exhaust holes 9 can be uniformly distributed along the circumference, the number and the positions of the grooves 17 and the exhaust holes 9 can be set according to actual conditions, in the embodiment, the grooves 17 and the exhaust holes 9 are all 6, and the grooves 17 and the exhaust holes 9 are uniformly distributed along the circumference, so as to avoid the mounting holes;
referring to fig. 1 and 2, the first bearing assembly 7 is two angular contact ball bearings arranged in series, which on one hand plays a role in concentricity and balance, and on the other hand can bear radial load and axial load simultaneously, so that axial runout and radial runout of the rotating shaft 4 under high-speed operation are effectively reduced, the working stability of the motor is improved, the working noise is reduced, and the service life of the motor is prolonged;
referring to fig. 1 and 4, a fan 11 is arranged at the non-shaft extending end of the rotating shaft 4, the fan 11 is arranged at the outer side of the second end cover 6, a fan cover 12 is arranged at the outer side of the fan 11, the fan cover 12 is connected with the machine base 1, the fan 11 plays a role in heat dissipation, the fan 11 is matched with the groove 17 and the exhaust hole 9 for use, the heat dissipation effect is improved, and the service life of the motor is prolonged;
referring to fig. 1, a connector lug 13 is arranged on a machine base 1, a cable waterproof lock head 14 is sleeved on the connector lug 13, a thread sleeve 15 is arranged on the outer side of the cable waterproof lock head 14, the cable waterproof lock head 14 is connected with the machine base 1 through the thread sleeve 15, a corrugated pipe 16 is sleeved on the connector lug 13, the corrugated pipe 16 is connected with the cable waterproof lock head 14, and the cable waterproof lock head 14, the thread sleeve 15 and the corrugated pipe 16 are matched for use, so that the safety of motor power connection is improved.
In one embodiment, referring to fig. 3, for use with the first bearing assembly 7, the second bearing assembly 8 is configured as angular contact ball bearings, the number of angular contact ball bearings being set according to the actual situation; the wave spring 10 is arranged between the second bearing assembly 8 and the second end cover 6, and the wave spring 10 applies pretightening force to the second bearing assembly 8, so that the vibration and noise of the motor are reduced, the motor operates more stably, and the service life of the second bearing assembly 8 is prolonged.
In one embodiment, referring to fig. 1, the base 1 is made of aluminum, so that the weight of the motor is reduced, and the heat dissipation effect is improved.
The utility model provides a high-speed permanent magnet variable frequency motor, which is characterized in that a plurality of grooves 17 and exhaust holes 9 are formed in a first end cover 5, when the motor is matched with a centrifugal fan for use, redundant high-pressure gas between an impeller of the centrifugal fan and the first end cover 5 is discharged through the grooves 17 and the exhaust holes 9, so that the local temperature rise of the motor is effectively reduced, the redundant high-pressure gas is prevented from entering the motor, the reliability and the safety of the motor are improved, and the service life of the motor is prolonged; the utility model has the advantages of small volume, good heat dissipation effect, improved working efficiency and prolonged service life, and can be widely applied to the technical field of motors.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (8)
1. The utility model provides a high-speed permanent magnet variable frequency motor, includes frame, stator, rotor, pivot and two end covers, set up in the pivot the rotor, set up in the frame the stator, the rotor cooperation is installed the inside of stator, the both ends of frame all set up the end cover, be equipped with bearing assembly in the end cover, the pivot passes through bearing assembly with the end cover rotates to be connected, is located on the pivot shaft extension the bearing assembly is the duplex bearing setting, its characterized in that is located be equipped with a plurality of circumference radial distribution's recess on the end cover of pivot shaft extension, the outer lane of recess is equipped with a plurality of circumference distribution's exhaust hole, the exhaust hole with the recess is linked together.
2. The high-speed permanent magnet variable frequency motor according to claim 1, wherein the end cover at the shaft extension end of the rotating shaft is a flange end cover, and the flange end cover is provided with the groove and the exhaust hole.
3. A high speed permanent magnet variable frequency motor according to claim 1 wherein the bearing assembly on the shaft extension end of the shaft is two angular contact ball bearings arranged in series.
4. A high speed permanent magnet variable frequency motor according to claim 1 or 3, wherein the bearing assembly on the non-shaft extending end of the shaft is an angular contact ball bearing, and a wave spring is provided between the angular contact ball bearing and the end cap.
5. The high-speed permanent magnet variable frequency motor according to claim 1, wherein a fan is arranged on a non-shaft extension end of the rotating shaft, a fan cover is arranged on the outer side of the fan, and the fan cover is connected with the base.
6. The high-speed permanent magnet variable frequency motor according to claim 1, wherein the base is made of aluminum.
7. A high speed permanent magnet variable frequency motor according to claim 1, wherein the housing is provided with a connector lug.
8. The high-speed permanent magnet variable frequency motor according to claim 7, wherein a cable waterproof lock head is sleeved on the connector, a thread sleeve is arranged on the outer side of the cable waterproof lock head, the cable waterproof lock head is connected with the base through the thread sleeve, a corrugated pipe is further sleeved on the connector, and the corrugated pipe is connected with the cable waterproof lock head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321133965.9U CN219812036U (en) | 2023-05-09 | 2023-05-09 | High-speed permanent magnet variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321133965.9U CN219812036U (en) | 2023-05-09 | 2023-05-09 | High-speed permanent magnet variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219812036U true CN219812036U (en) | 2023-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321133965.9U Active CN219812036U (en) | 2023-05-09 | 2023-05-09 | High-speed permanent magnet variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219812036U (en) |
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2023
- 2023-05-09 CN CN202321133965.9U patent/CN219812036U/en active Active
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