CN214850686U - Compressor special motor capable of never demagnetizing - Google Patents
Compressor special motor capable of never demagnetizing Download PDFInfo
- Publication number
- CN214850686U CN214850686U CN202121135560.XU CN202121135560U CN214850686U CN 214850686 U CN214850686 U CN 214850686U CN 202121135560 U CN202121135560 U CN 202121135560U CN 214850686 U CN214850686 U CN 214850686U
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- rotor
- permanent magnet
- compressor
- stator
- never
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a permanent-magnet machine technical field just discloses a compressor special motor of never demagnetizing, include ring flange, stator, permanent-magnet rotor, fan blade and the fan housing of being connected with the air compressor machine, realize that stator magnetic field only magnetizes the effect to the permanent magnet in the permanent-magnet rotor, can ensure that the motor rotor never demagnetizes, and simple structure, the motor does not have the shell, does not have the bearing, saves the raw and other materials of making the motor by a wide margin.
Description
Technical Field
The utility model relates to a permanent-magnet machine technical field specifically is a compressor special motor of never demagnetization.
Background
With the emergence of the permanent magnet variable frequency air compressor, the permanent magnet motor is widely applied to the field of the air compressor with the advantages of high efficiency, high power density, high power factor and the like. The permanent magnet motor mostly comprises a front end cover, a rear end cover, a motor shell, a stator, a permanent magnet rotor, fan blades, a fan housing, a bearing and other components. However, the permanent magnet on the rotor of the permanent magnet motor at the present stage has an irreversible demagnetization phenomenon in the long-term use process. One is the demagnetization phenomenon of the permanent magnet caused by overhigh temperature of the motor, and the other is the demagnetization phenomenon caused by armature reaction.
SUMMERY OF THE UTILITY MODEL
The utility model mainly provides a compressor special motor that never demagnetizes solves its motor permanent magnet of current permanent magnetism variable frequency air compressor machine and has irreversible demagnetization phenomenon's problem in long-term use
In order to solve the technical problem, the utility model discloses a following technical scheme:
a compressor special motor without demagnetization never comprises a flange plate, a stator, a permanent magnet rotor, fan blades and a fan cover, wherein the flange plate is connected with an air compressor; the permanent magnet rotor is coaxially sleeved in the stator through a rotor shaft sleeve, and the rotor shaft sleeve is sleeved on the rotor shaft of the air compressor; the permanent magnet rotor including set up in rotor core on the rotor shaft cover, and set up in permanent magnet on the rotor core, the permanent magnet be the circumference array in on the rotor core to divide into outer additional magnetic pole and the additional magnetic pole of inlayer with rotor core, rotor core is last to be corresponded the permanent magnet both sides are provided with hinders the magnetic gap, the fan blade set up in the rotor core outside, the fan housing cover is located outside the ring flange. The permanent demagnetization-free motor special for the air compressor mainly comprises a stator, a permanent magnet rotor, a flange plate and an air cover component. As with a common permanent magnet motor, the stator core is of a laminated structure so as to reduce iron loss caused by eddy current and hysteresis effect when the motor operates; the winding is of a three-phase symmetrical structure. Only this application rotor part is different with traditional permanent-magnet machine, has set up inside and outside two sets of additional magnetic poles on the rotor, and the additional magnetic pole on the rotor is formed by silicon steel sheet lamination, and the permanent magnet setting is between inside and outside additional magnetic pole. When the motor operates, the stator magnetic field and the magnetic steel form a closed magnetic circuit through the additional magnetic pole on the rotor, the shaft sleeve of the rotor of the motor is directly connected with the shaft of the air compressor, the flange plate is connected with the shell of the air compressor, and the stator core is arranged on the flange plate.
Furthermore, the flange plate is provided with a positioning pin matched with the stator for installation. Thus, the installation efficiency can be improved.
Furthermore, the stator is fixedly connected with the flange plate by adopting a first bolt.
Furthermore, the flange plate is provided with a positioning hole connected with the air compressor and is connected with the air compressor through a second bolt. The flange plate can be conveniently fixed in advance by arranging the positioning holes, and the flange plate is connected by bolts, so that the structure is simple, and the connection is stable.
Further, still include the rotor balancing piece, the rotor balancing piece set up in rotor core is inboard.
Has the advantages that: when the motor operates, the magnetic field of the permanent magnet in the permanent magnet rotor forms a closed magnetic circuit with the stator after passing through the outer additional magnetic pole and the inner additional magnetic pole of the permanent magnet rotor, when the motor operates, the stator magnetic field and the magnetic field of the permanent magnet rotor form the same-direction closed magnetic circuit all the time through the corresponding additional magnetic poles, and the stator magnetic field only has a magnetizing effect on the permanent magnet in the permanent magnet rotor, so that the motor rotor can be ensured not to be demagnetized forever. The structure is simple, the motor is only composed of a flange plate, a stator, a permanent magnet rotor, fan blades, a fan cover, a rotor shaft sleeve and the like, the motor is free of a shell and a bearing, and raw materials for manufacturing the motor are greatly saved.
Drawings
Fig. 1 is an exploded view of the motor of the present embodiment;
FIG. 2 is a schematic cross-sectional view of a permanent magnet rotor according to the present embodiment;
reference numerals: the rotor comprises a flange plate 1, a stator 2, a permanent magnet rotor 3, a rotor iron core 31, a permanent magnet 32, an outer additional magnetic pole 33, an inner additional magnetic pole 34, a fan blade 4, a fan cover 5, a rotor shaft sleeve 6, a positioning pin 7, a first bolt 8 and a rotor balance block 9.
Detailed Description
The technical solution of the compressor-dedicated motor never demagnetized according to the present invention will be described in detail with reference to the following embodiments.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and fig. 2, the motor special for a compressor without demagnetization in this embodiment includes a flange plate connected to the air compressor, a stator, a permanent magnet rotor, a fan blade, and a fan housing; the permanent magnet rotor is coaxially sleeved in the stator through a rotor shaft sleeve, and the rotor shaft sleeve is sleeved on the rotor shaft of the air compressor; the permanent magnet rotor including set up in rotor core on the rotor shaft cover, and set up in permanent magnet on the rotor core, the permanent magnet be the circumference array in on the rotor core to divide into outer additional magnetic pole and the additional magnetic pole of inlayer with rotor core, rotor core is last to be corresponded the permanent magnet both sides are provided with hinders the magnetic gap, the fan blade set up in the rotor core outside, the fan housing cover is located outside the ring flange. And the flange plate is provided with a positioning pin matched with the stator for installation. The stator is fixedly connected with the flange plate through a first bolt. And the flange plate is provided with a positioning hole connected with the air compressor and is connected with the air compressor through a second bolt. The rotor balance block is arranged on the inner side of the rotor core. The fan blade and the balancing block can also be fixed by bolts and nuts.
The permanent demagnetization-free motor special for the air compressor mainly comprises a stator, a permanent magnet rotor, a flange plate and an air cover component. As with a common permanent magnet motor, the stator core is of a laminated structure so as to reduce iron loss caused by eddy current and hysteresis effect when the motor operates; the winding is of a three-phase symmetrical structure. Only this application rotor part is different with traditional permanent-magnet machine, has set up inside and outside two sets of additional magnetic poles on the rotor, and the additional magnetic pole on the rotor is formed by silicon steel sheet lamination, and the permanent magnet setting is between inside and outside additional magnetic pole. When the motor operates, the stator magnetic field and the magnetic steel form a closed magnetic circuit through the additional magnetic pole on the rotor, the shaft sleeve of the rotor of the motor is directly connected with the shaft of the air compressor, the flange plate is connected with the shell of the air compressor, and the stator core is arranged on the flange plate.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a compressor special motor of never demagnetization which characterized in that: the permanent magnet air compressor comprises a flange plate, a stator, a permanent magnet rotor, fan blades and a fan cover, wherein the flange plate is connected with the air compressor; the permanent magnet rotor is coaxially sleeved in the stator through a rotor shaft sleeve, and the rotor shaft sleeve is sleeved on the rotor shaft of the air compressor; the permanent magnet rotor including set up in rotor core on the rotor shaft cover, and set up in permanent magnet on the rotor core, the permanent magnet be the circumference array in on the rotor core to divide into outer additional magnetic pole and the additional magnetic pole of inlayer with rotor core, rotor core is last to be corresponded the permanent magnet both sides are provided with hinders the magnetic gap, the fan blade set up in the rotor core outside, the fan housing cover is located outside the ring flange.
2. The compressor-dedicated motor never to be demagnetized according to claim 1, wherein: and the flange plate is provided with a positioning pin matched with the stator for installation.
3. The compressor-dedicated motor never to be demagnetized according to claim 1, wherein: the stator is fixedly connected with the flange plate through a first bolt.
4. The compressor-dedicated motor never to be demagnetized according to claim 1, wherein: and the flange plate is provided with a positioning hole connected with the air compressor and is connected with the air compressor through a second bolt.
5. The compressor-dedicated motor never to be demagnetized according to claim 1, wherein: the rotor balance block is arranged on the inner side of the rotor core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121135560.XU CN214850686U (en) | 2021-05-25 | 2021-05-25 | Compressor special motor capable of never demagnetizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121135560.XU CN214850686U (en) | 2021-05-25 | 2021-05-25 | Compressor special motor capable of never demagnetizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214850686U true CN214850686U (en) | 2021-11-23 |
Family
ID=78776685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121135560.XU Expired - Fee Related CN214850686U (en) | 2021-05-25 | 2021-05-25 | Compressor special motor capable of never demagnetizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214850686U (en) |
-
2021
- 2021-05-25 CN CN202121135560.XU patent/CN214850686U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |