CN213402586U

CN213402586U - Single-phase series excited motor stator punching sheet

Info

Publication number: CN213402586U
Application number: CN202021996136.XU
Authority: CN
Inventors: 高军利; 黄建平
Original assignee: Jiangsu Dayi M&e Tools Co ltd
Current assignee: Jiangsu Dartek Technology Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-06-08
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a single-phase series excited machine stator punching, including yoke portion and the utmost point body portion of setting in it, the rotor chamber is constituteed to the inner arc of utmost point body portion, and the total length of inner arc is 0.6-0.8 with the ratio of the girth in rotor chamber, the magnetic pole is constituteed with yoke portion's coupling part to utmost point body portion, just the arc length of inner arc is 1.79-2.47 with the ratio of the width of magnetic pole. The performance of its promotion motor that can show has improved production efficiency, has reduced the production degree of difficulty.

Description

Single-phase series excited motor stator punching sheet

Technical Field

The utility model relates to a stator is towards piece, concretely relates to single-phase series excited machine stator is towards piece.

Background

A series motor is a motor in which a stator coil (field winding) and a rotor coil (armature winding) are connected in series via a brush and a commutator to a power supply. The series motor is suitable for both AC and DC power supplies. The motor has high rotating speed, small volume, light weight and convenient speed regulation, is widely applied to automatic control, civil industrial automation and other departments, and is particularly more widely applied to the electric tool industry and the household appliance industry. The existing single-phase series excited motor stator punching sheet has the advantages of small wire window area, high wire feeding difficulty, small wire feeding amount and small motor power; because the copper lines at the two ends of the iron core do not generate magnetic fields, the waste of the copper lines is large, the utilization rate of the copper lines is low, the unit weight output of the motor is small, and the motor efficiency is low. In addition, during the processing of the stator punching sheet, the enameled wire is separately wound and then embedded into the stator core, the processing technology is complex, the production efficiency is low, and the production qualified rate is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a single-phase series excited machine stator is towards piece, its performance that promotes the motor that can show has improved production efficiency, has reduced the production degree of difficulty.

In order to solve the technical problem, the utility model provides a single-phase series excited machine stator punching, including yoke portion and the pole body portion of setting in it, the rotor chamber is constituteed to the inner arc of pole body portion, and the ratio of the total length of inner arc and the girth in rotor chamber is 0.6-0.8, the magnetic pole is constituteed with yoke portion's coupling part to pole body portion, just the ratio of the arc length of inner arc and the width of magnetic pole is 1.79-2.47.

Preferably, the pole body comprises a pole shoe and a pole tip, the pole shoe is arranged on the magnetic pole, the pole tip is arranged on the pole shoe, the pole tip is arc-shaped, an inner arc of the pole shoe is tangent to an arc of the pole tip at a connecting part to form a tangent line, and the tangent line is tangent to the rotor cavity.

Preferably, the yoke has a straight slot-shaped cross section, the yoke has an outer diameter 10 to 12 times as large as the height of the stator yoke and an inner diameter 5.9 to 7 times as large as the height of the stator yoke, and the distance between the two flat surfaces outside the pole body is 0.81 to 0.87 of the outer diameter of the yoke.

Preferably, the outer circle of the yoke is symmetrically cut into a flat square, and the length of the flat square is reduced to be not more than 0.03 of the outer diameter of the yoke.

Preferably, the ratio of the height of the magnetic pole to the width of the magnetic pole is 0.3-0.6, and the stator yoke height of the yoke part is 0.25-0.36 of the width of the magnetic pole.

Preferably, the pole body parts are two in number and symmetrically arranged in the yoke part.

Preferably, the width of the magnetic pole is 26-32mm, and the arc angle of the inner arc is 120-130 degrees.

Preferably, the height of the magnetic pole is 11-13.5 mm.

Preferably, the height of the stator yoke is 8.2-9.2 mm.

Preferably, the yoke has an outer diameter of 95mm and an inner diameter of 54.8 to 56.2 mm.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses the design of optimization, stator punching can form the deep trouth structure, and the width of magnetic pole is extremely short, has shortened stator coil's span, makes the coil length of the same number of turns shorter, has reduced coil resistance, has reduced copper consumption, and is with low costs. In addition, the window area of the stator coil is increased, more stator coils can be placed, the magnetic flux of excitation is increased, the magnetic flux from the stator to the air gap of the rotor is increased, and therefore the power of the motor is increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the utility model after winding.

Wherein, 1-pole body part, 2-yoke part, 3-pole shoe, 4-pole tip and 41-tangent line.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Examples

Referring to fig. 1, the utility model discloses a single-phase series excited machine stator punching, including yoke portion 2 and pole body portion 1 of setting in it. The inner arcs of the body part 1 form a rotor cavity, and the ratio of the total length of the inner arcs to the perimeter of the rotor cavity is 0.6-0.8. The connecting portion of the body portion 1 and the yoke portion 2 constitutes a magnetic pole. And the ratio of the arc length of the inner arc to the width of the magnetic pole is 1.79-2.47. Above optimized design, the stator punching sheet forms the deep groove structure, and the width of magnetic pole is extremely short, has shortened the span of stator coil, makes the coil length of the same number of turns shorter, has reduced coil resistance, has reduced the copper and has consumed, with low costs. In addition, the window area of the stator coil is increased, more stator coils can be placed, the magnetic flux of excitation is increased, the magnetic flux from the stator to the air gap of the rotor is increased, and therefore the power of the motor is increased.

Specifically, the body portion 1 has a crescent shape. The inner arc of the crescent, the concave arc, encloses the rotor cavity. The outer arc of the crescent, i.e., the convex arc, is partially disposed on the yoke part 2. The connection part of the outer arc and the magnetic yoke part 2 is a magnetic pole. The outer arc, the inner ring of the yoke part 2 and the magnetic pole together constitute a deep slot window for placing a stator coil.

In order to reduce the magnetic flux density of the stator yoke and reduce the magnetic loss, the ratio of the height of the magnetic pole to the width of the magnetic pole is 0.3-0.6. The motor stator punching sheet has the advantages that the height of the magnetic yoke of the stator punching sheet is increased, the output power and the efficiency of the motor are improved, the characteristic hardness of the motor is improved, the spark of the motor is improved, the efficiency of the motor is improved, and the service life of the motor is prolonged. Meanwhile, in order to ensure the integral structural strength of the stator punching sheet, the height of the stator yoke of the magnetic yoke part 2 is 0.25-0.36 of the width of the magnetic pole.

The yoke portion 2 has a straight notch-shaped cross section. The outer diameter of the yoke part 2 is 10-12 times the height of the stator yoke. The inner diameter is 5.9-7 times higher than the stator yoke. The distance between the two flat surfaces of the pole body part 1 is 0.81-0.87 of the outer diameter of the magnetic yoke part 2. The outer circle of the yoke part 2 is cut into a flat square symmetrically. The length of the flat reduction is not more than 0.03 of the outer diameter of the yoke portion 2. The flat square may be located on the stud side of the fixed yoke portion 2. The flat square can improve the economic cutting performance of the stator punching sheet. The flat shape of the pole body part 1 is provided with an inverted trapezoidal notch. The depth of the notch is 0.14-0.19 of the height of the stator yoke.

The pole body 1 comprises a pole shoe 3 and a pole tip 4. The pole shoe 3 is arranged on the magnet pole. The pole tip 4 is arranged on the pole shoe 3. The pole tip 4 is arc-shaped. The inner arc of the pole shoe 3 is tangent to the arc of the pole tip 4 at the connection and constitutes a tangent 41, and the tangent 41 is tangent to the rotor cavity. The rotor has good transition, not only reduces the pole tip effect, namely the rotor induces electromotive force, but also reduces the process difficulty of off-line.

In some preferred embodiments of the present invention, the above-mentioned pole body part 1 has two, and the two are symmetrically disposed in the magnetic yoke part 2. The width of the magnetic pole is 26-32mm, namely Bp is 26-32 mm. The arc angle of the inner arc is 120-. The structure is simple, the depth of the deep groove is deep, the length of the coil with the same number of turns is shortened, the area of the window is large, and the coils with more turns can be placed through the window. Preferably, the width Bp of the magnetic pole is 30 mm. The arc angle β of the inner arc is 126 °.

The height of the magnetic pole is 11-13.5mm, namely hp is 11-13.5 mm. The height of the magnetic yoke is large, so that the output power and the efficiency of the motor are improved, and the service life of the motor is prolonged. Preferably, the height hp of the magnetic pole is 12.35 mm.

The height of the stator yoke is 8.2-9.2mm, namely hc is 8.2-9.2 mm. Which reduces the magnetic flux density of the yoke portion 2. Preferably, the stator yoke height hc is 8.9 mm.

The yoke portion 2 has an outer diameter of 95mm, i.e., D1 is 95 mm. The inner diameter of the pole body part 1 is 54.8-56.2mm, namely D12 is 54.8-56.2 mm. Preferably, the inner diameter D12 of the pole body portion 1 is 55.3 mm.

The distance between the two flat surfaces of the pole body part 1 is 78 to 81mm, that is, B1 is 78 to 81 mm. Preferably, the distance B1 between the flat surfaces is 80 mm.

The distance between two opposite flat squares is 93.6-95.6mm, namely, B2 is 93.6-95.6 mm. Preferably, B2 ═ 94.6 mm.

The stator punching sheet is made of silicon steel.

Referring to fig. 2, a stator coil is wound around a stator lamination core. A set of stator coils is positioned within a set of deep slots.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The stator punching sheet of the single-phase series motor is characterized by comprising a magnet yoke part and a pole body part arranged in the magnet yoke part, wherein a rotor cavity is formed by inner arcs of the pole body part, the ratio of the total length of the inner arcs to the perimeter of the rotor cavity is 0.6-0.8, a magnetic pole is formed by the connection part of the pole body part and the magnet yoke part, and the ratio of the arc length of the inner arcs to the width of the magnetic pole is 1.79-2.47.

2. The single-phase series motor stator punching sheet as claimed in claim 1, wherein the pole body portion comprises a pole shoe and a pole tip, the pole shoe is arranged on the magnetic pole, the pole tip is arranged on the pole shoe, the pole tip is arc-shaped, an inner arc of the pole shoe is tangent to an arc of the pole tip at a connecting portion, a tangent line is formed, and the tangent line is tangent to the rotor cavity.

3. The single-phase series motor stator punching sheet of claim 1, wherein the cross section of the yoke part is in a straight slot shape, the outer diameter of the yoke part is 10-12 times of the height of the stator yoke, the inner diameter of the yoke part is 5.9-7 times of the height of the stator yoke, and the distance between the two flat surfaces outside the pole body part is 0.81-0.87 of the outer diameter of the yoke part.

4. The single-phase series motor stator lamination of claim 3, wherein the outer circle of the yoke portion is symmetrically cut into a flat square, and the reduced length of the flat square is not more than 0.03 of the outer diameter of the yoke portion.

5. The single-phase series motor stator lamination of claim 1, wherein the ratio of the height of the magnetic pole to the width of the magnetic pole is 0.3-0.6, and the stator yoke height of the yoke portion is 0.25-0.36 of the width of the magnetic pole.

6. The single-phase series motor stator punching sheet of claim 1, wherein the number of the pole body parts is two, and the two pole body parts are symmetrically arranged in the yoke part.

7. The single-phase series motor stator lamination as claimed in claim 6, wherein the width of the magnetic pole is 26-32mm, and the arc angle of the inner arc is 120-130 °.

8. The single-phase series motor stator punching sheet of claim 6, wherein the height of the magnetic poles is 11-13.5 mm.

9. The single-phase series motor stator lamination of claim 6, wherein the stator yoke height of the yoke portion is 8.2-9.2 mm.

10. The single-phase series motor stator lamination of claim 6, wherein the yoke portion has an outer diameter of 95mm and an inner diameter of 54.8-56.2 mm.