CN216134323U - Low-wind-resistance switched reluctance motor - Google Patents
Low-wind-resistance switched reluctance motor Download PDFInfo
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- CN216134323U CN216134323U CN202121226318.3U CN202121226318U CN216134323U CN 216134323 U CN216134323 U CN 216134323U CN 202121226318 U CN202121226318 U CN 202121226318U CN 216134323 U CN216134323 U CN 216134323U
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Abstract
The application relates to a low-wind-resistance switched reluctance motor, which comprises a rotor shaft, a rotor sheet, a resistance reducing sheet and a stator; a plurality of rotor sheets are arranged on the rotor shaft in a penetrating way; the rotor sheet is provided with an even number of rotor poles; the resistance reducing sheet is arranged on the rotor shaft in a penetrating manner, the resistance reducing sheet is arranged among the plurality of rotor sheets in a penetrating manner and is in a ring shape, and the radius of the outer ring of the resistance reducing sheet is at least greater than the length of the bottom of the rotor pole; the stator is hollow, and an even number of stator poles are arranged in the stator and matched with the rotor poles. Through when overlying the rotor piece, add between a plurality of rotor pieces and fall the piece that hinders, when the rotor piece is high-speed rotatory, two adjacent fall the air between the piece because of with fall the frictional force between the piece make it with fall the synchronous high-speed rotation of piece that hinders to reduce the windage around the rotor piece, reduce loss and calorific capacity, effectively improved reluctance motor's work efficiency.
Description
Technical Field
The application relates to the field of reluctance motors, in particular to a switched reluctance motor with low wind resistance.
Background
The stator and the rotor of the switched reluctance motor are both composed of a plurality of salient poles. Salient poles in the stator are used to form a magnetic circuit, and groove portions are used to embed a wire. Salient poles in the rotor are also used to form a magnetic circuit, and the groove portions form a second air gap. Sequentially electrifying the three-phase winding to generate a rotating magnetic field; according to the principle of minimum magnetic resistance, the rotor rotates step by step.
The switched reluctance motor has the advantages that other motors do not have in the high-speed stage, particularly the rotating speed is high and reaches 30000 r/min or the linear speed reaches 200 m/s, and other motors are difficult to reach. When the rotor of the switched reluctance motor rotates at a high speed, the salient pole tooth-shaped structure of the rotor can generate larger wind resistance, and the motor efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a low wind resistance switched reluctance motor, which includes a rotor shaft, a rotor sheet, a resistance reducing sheet, and a stator; a plurality of rotor sheets are arranged on the rotor shaft in a penetrating way; the rotor sheet is provided with an even number of rotor poles; the resistance reducing sheet is arranged on the rotor shaft in a penetrating mode, the resistance reducing sheet is arranged among the rotor sheets in a penetrating mode and is in a circular ring shape, and the radius of the outer ring of the resistance reducing sheet is larger than the length of the bottom of the rotor pole; the stator is hollow, and an even number of stator poles are arranged in the stator and matched with the rotor poles.
In a possible implementation manner, the resistance reducing pieces are clamped between every preset number of the rotor pieces, and the range of the preset number is 6-10.
In one possible implementation, the resistance reducing pieces are arranged at equal intervals between the plurality of rotor pieces.
In one possible implementation, the outer ring radius of the resistance reducing sheet is equal to the length of the longest top of the rotor pole of the rotor sheet.
In one possible implementation, the rotor shaft is provided with a positioning key; the middle part of the rotor sheet is provided with a first shaft hole which is matched with the positioning key; and a second shaft hole is formed in the middle of the resistance reducing sheet and is matched with the positioning key.
In a possible implementation manner, the device further comprises a locking structure; and matched locking structures are arranged outside the rotor sheets close to the two ends of the rotor shaft and used for fixing the rotor sheets and the resistance reducing sheets in the axial direction.
In one possible implementation, the number of the rotor poles is four; the number of the stator poles is six.
In a possible implementation manner, the resistance reduction sheet is made of a non-magnetic material or a non-metal material.
In one possible implementation, the rotor sheet is a silicon steel sheet.
In one possible implementation manner, the resistance reducing sheet is made of a high-resistivity metal material.
The beneficial effect of this application: through when overlying the rotor piece, add between a plurality of rotor pieces and fall the piece that hinders, when the rotor piece is high-speed rotatory, two adjacent fall the air between the piece because of with fall the frictional force between the piece make it with fall the synchronous high-speed rotation of piece that hinders to reduce the windage around the rotor piece, reduce loss and calorific capacity, effectively improved reluctance motor's work efficiency.
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic structural diagram of a rotor plate and a drag reduction plate mounted on a rotor shaft according to an embodiment of the present application;
FIG. 2 shows a side view of a rotor sheet and a drag reduction sheet according to an embodiment of the present application;
FIG. 3 shows a close-up view of a rotor sheet and a friction reducing sheet according to an embodiment of the present application;
fig. 4 illustrates a side schematic view of a low windage switched reluctance motor according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
It will be understood, however, that the terms "central," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application or for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.
FIG. 1 is a schematic structural diagram of a rotor plate and a drag reduction plate mounted on a rotor shaft according to an embodiment of the present application; FIG. 2 shows a side view of a rotor sheet and a drag reduction sheet according to an embodiment of the present application; FIG. 3 shows a close-up view of a rotor sheet and a friction reducing sheet according to an embodiment of the present application; fig. 4 illustrates a side schematic view of a low windage switched reluctance motor according to an embodiment of the present application.
As shown in fig. 1 to 4, the low-wind-resistance switched reluctance motor includes: the rotor comprises a rotor shaft 11, a rotor sheet 12, a resistance reducing sheet 13 and a stator 20; a plurality of rotor sheets 12 are arranged on the rotor shaft 11 in a penetrating way; the rotor sheet 12 has an even number of rotor poles thereon; the resistance reducing sheet 13 is arranged on the rotor shaft 11 in a penetrating manner, the resistance reducing sheet 13 is arranged among the plurality of rotor sheets 12 in a penetrating manner and is in a ring shape, and the radius of the outer ring of the resistance reducing sheet 13 is at least larger than the length of the bottom of the rotor pole; the stator 20 is hollow and has an even number of stator poles disposed therein, matching the rotor poles.
In this possible implementation manner, when the rotor sheets 12 are laminated, the resistance reducing sheets 13 are additionally arranged between the plurality of rotor sheets 12, and when the rotor sheets 12 rotate at a high speed, air between two adjacent resistance reducing sheets 13 rotates at a high speed synchronously with the resistance reducing sheets 13 due to friction between the air and the resistance reducing sheets 13, so that wind resistance around the rotor sheets 12 is reduced, loss and heat generation are reduced, and the working efficiency of the reluctance motor is effectively improved.
In a possible implementation manner, the resistance reducing sheets 13 are interposed between every preset number of rotor sheets 12, and the range of the preset number is 6-10.
In this possible implementation manner, the resistance reducing sheets 13 are arranged at intervals of 6 to 10 sheets, so that an air cavity can be effectively formed between two adjacent resistance reducing sheets 13 while ensuring that the work of the rotor sheet 12 is not affected, and the air resistance of the low-wind-resistance switched reluctance motor is reduced.
As shown in fig. 4, specifically, the resistance reducing sheets 13 may be disposed at equal intervals or unequal intervals between the rotor sheets 12, and the implementation personnel in the field may match the resistance reducing sheets by themselves, reasonably, and each stator pole of the stator is wound with the surrounding coil 30, which is not described in detail.
In one possible implementation, the drag reduction tabs 13 are equally spaced between the plurality of rotor sheets 12, as shown in fig. 3.
In this possible implementation manner, when the rotor sheets 12 are arranged at equal intervals, the force is even when the rotor sheets rotate at a high speed, the heat generation amount between two adjacent resistance reducing sheets 13 is relatively even, and the situation of local overheating does not occur after the rotor sheets are operated for a long time, which is helpful for enhancing the stability of the operation of the reluctance motor.
As shown in fig. 2, in one possible implementation, the outer ring radius of the friction reducing sheet 13 is equal to the length of the rotor pole top longest of the rotor sheets 12.
In this possible implementation, it is preferable that the outer diameter of the resistance-reducing sheet 13, which is generally annular at the top of the rotor pole, is equal to the length of the longest position of the top of the rotor pole, and on the premise that a reasonable air gap is ensured between the stator 20 and the rotor, the radial length of the resistance-reducing sheet 13 is maximized, so as to ensure the volume of the air cavity, and reduce the influence of the wind resistance on the efficiency of the motor to the greatest extent.
In a possible implementation manner, a positioning key is arranged on the rotor shaft 11, and a first shaft hole is formed in the middle of the rotor sheet 12 and matched with the positioning key; the middle part of the resistance reducing sheet 13 is provided with a second shaft hole which is matched with the positioning key.
In this possible implementation, the inner diameter of the resistance reducing sheet 13 is matched with the rotor shaft 11, and a key groove is formed on the inner hole of the ring.
As shown in fig. 1, in one possible implementation, a locking structure 14 is further included; and matching locking structures 14 are arranged outside the rotor sheets 12 close to the two ends of the rotor shaft 11 and used for fixing the rotor sheets 12 and the resistance reducing sheets 13 in the axial direction.
In one possible implementation, the number of rotor poles is four; the number of stator poles is six. The number of stator poles of the stator 20 is six.
In one possible implementation, the resistance reduction sheet 13 is made of a non-magnetic material or a non-metal material.
In this embodiment, the material of the resistance reducing sheet 13 is not limited, and it is only necessary to ensure that the resistance reducing sheet 13 does not form a magnetic circuit with the stator pole on the stator 20 after the motor is powered on.
Preferably, the resistance-reducing sheet 13 is made of a non-magnetic material.
In one possible implementation, the rotor sheet 12 is a silicon steel sheet.
In one possible implementation, the resistance-reducing sheet 13 is made of a high-resistivity metal material.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A switched reluctance motor with low wind resistance is characterized by comprising a rotor shaft, a rotor sheet, a resistance reducing sheet and a stator;
a plurality of rotor sheets are arranged on the rotor shaft in a penetrating way;
the rotor sheet is provided with an even number of rotor poles;
the resistance reducing sheet is arranged on the rotor shaft in a penetrating mode, the resistance reducing sheet is arranged among the rotor sheets in a penetrating mode and is in a circular ring shape, and the radius of the outer ring of the resistance reducing sheet is larger than the length of the bottom of the rotor pole;
the stator is hollow, and an even number of stator poles are arranged in the stator and matched with the rotor poles.
2. The switched reluctance motor with low wind resistance according to claim 1, wherein the resistance reducing pieces are interposed between every preset number of the rotor pieces, and the range of the preset number is 6-10.
3. The low windage switched reluctance machine of claim 2 wherein the drag reduction tabs are equally spaced between the plurality of rotor tabs.
4. The switched reluctance machine of any one of claims 1 to 3, wherein the outer ring radius of the resistance-reducing sheet is equal to the length of the longest top of the rotor pole of the rotor sheet.
5. The low windage switched reluctance machine of claim 4 wherein the thickness of the lift tab is the same as the thickness of a single rotor tab.
6. The low windage switched reluctance machine of claim 4 wherein the rotor shaft is provided with a detent key;
the middle part of the rotor sheet is provided with a first shaft hole which is matched with the positioning key;
and a second shaft hole is formed in the middle of the resistance reducing sheet and is matched with the positioning key.
7. The low windage switched reluctance machine of claim 6 further comprising a locking structure;
the locking structure penetrates through the rotor shaft, and matched locking structures are arranged outside the rotor sheets close to the two ends of the rotor shaft and used for fixing the rotor sheets and the resistance reducing sheets in the axial direction.
8. The low windage switched reluctance machine of claim 4 wherein the number of rotor poles is four;
the number of the stator poles is six.
9. The switched reluctance motor with low wind resistance of claim 4, wherein the resistance-reducing sheet is made of a non-magnetic material, a non-metal material or a high-resistivity metal material.
10. The switched reluctance motor with low wind resistance of claim 4, wherein the rotor sheet is a silicon steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121226318.3U CN216134323U (en) | 2021-06-02 | 2021-06-02 | Low-wind-resistance switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121226318.3U CN216134323U (en) | 2021-06-02 | 2021-06-02 | Low-wind-resistance switched reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216134323U true CN216134323U (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121226318.3U Active CN216134323U (en) | 2021-06-02 | 2021-06-02 | Low-wind-resistance switched reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216134323U (en) |
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2021
- 2021-06-02 CN CN202121226318.3U patent/CN216134323U/en active Active
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