Novel motor stator

Abstract

The invention relates to a novel motor stator. According to the single-phase two-pole motor stator notch equipartition layout method, a traditional single-phase two-pole motor stator notch equipartition layout mode is adjusted, the proportion of a main winding and an auxiliary winding of a sine winding is shortened by reducing the number of notches and increasing the distribution span of the sine winding, the effects of saving materials and improving effects are achieved, the efficiency is improved by 1%-3%, and the materials are comprehensively saved by more than 10%. And meanwhile, the width of the toothed plate is widened, the stator pitch is increased, the main and auxiliary wire windings of the motor are convenient to adjust, the turn ratio of the auxiliary winding is properly improved, and the microfarad of starting and running capacitance is reduced, so that the loss of the motor is reduced, the number of turns of the main winding is reduced, the power of the motor is improved, and the problem of poor starting performance of the multi-slot motor is solved. In addition, the design scheme can reduce the height of part of the yoke part, so that the motor efficiency is not influenced, and materials can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor stator, in particular to a novel motor stator. BACKGROUND

[0002] Traditional single-phase two-pole motor stators are all 24 slots, and increasing the number of stator slots to increase the sinusoidal winding distribution span helps to improve efficiency. When designing a traditional motor stator, the corresponding yoke area and height must be ensured, and reducing the yoke area and height will affect the motor loss and thus the motor efficiency. In view of the actual situation of all single-phase motor stator designs, in order to solve the problem of reduced motor starting performance caused by increasing the sinusoidal winding distribution span of traditional single-phase motors and the problem of affecting motor efficiency caused by reducing the yoke height, a motor stator that can increase the span, improve the motor starting performance, reduce the yoke height of the stator, and not affect the motor efficiency needs to be designed. SUMMARY

[0003] In view of the problems existing in the prior art, the present application discloses a novel motor stator, which adopts the technical scheme of providing a first stator slot in the middle part of the stator body in circumferential equal division, and providing a second stator slot symmetrically in the middle part of the stator body, wherein the length of the second stator slot is less than the length of the first stator slot, the yoke height corresponding to the second stator slot can be reduced accordingly without affecting the motor efficiency, the second stator slot is provided between two adjacent second stator slots, the width of the second stator slot is greater than the width of the first stator slot, and the width of the second stator slot is equal to the width of the two adjacent first stator slots without the first stator slot, that is, the two first stator plates are connected as a whole by missing one first stator slot, thereby forming a second stator plate, the number of stator slots is reduced, and the sinusoidal winding distribution span is increased.

[0004] As a preferred scheme of the present application, the second stator slot is four, and the connecting line between the two corresponding second stator slots passes through the center of the stator body.

[0005] The beneficial effects of this invention are as follows: This invention adjusts the traditional evenly distributed stator slot layout of a single-phase two-pole motor. By reducing the number of slots and increasing the distribution span of the sinusoidal winding, the ratio of the main and auxiliary sinusoidal windings is shortened, resulting in material savings and increased efficiency. Efficiency is improved by 1%-3%, and overall material savings exceed 10%. Simultaneously, the tooth plate width is widened, increasing the stator tooth pitch and facilitating adjustment of the main and auxiliary windings. The auxiliary winding turns ratio is also appropriately increased, reducing the microfarads of the starting and running capacitors, thereby reducing motor losses, decreasing the number of main winding turns, increasing motor power, and solving the problem of poor starting performance in multi-slot motors. Furthermore, this design can reduce the height of part of the yoke, saving materials without affecting motor efficiency. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention.

[0007] In the figure: 1 stator body, 2 first stator slot, 3 first tooth plate, 4 second stator slot, 5 second tooth plate. Detailed Implementation

[0008] Example 1

[0009] like Figure 1 As shown, this invention discloses a novel motor stator. In a traditional single-phase two-pole motor stator, first stator slots 2 are evenly spaced around the center of the stator body 1, with first toothed plates 3 between them. In this invention, second stator slots 4 are symmetrically arranged in the center of the stator body 1, replacing the corresponding first stator slots 2. There are four second stator slots 4, with the line connecting two corresponding slots passing through the center of the stator body 1. The length of each second stator slot 4 is shorter than that of the first stator slot 2. Because the second stator slots 4 are shorter, the corresponding yoke height can be reduced without affecting motor efficiency. No slot openings are made between adjacent second stator slots 4, allowing adjacent first toothed plates 3 to be connected as a single unit to form a second toothed plate 5. The width of the second toothed plate 5 is greater than the width of the first toothed plate 3. This reduces the number of stator slots, increases the sine winding distribution span, and increases the toothed plate width, thereby increasing the stator tooth pitch and improving motor starting performance.

[0010] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0011] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood through the specific circumstances.

[0012] Components not described in detail in this article are existing technologies.

[0013] While the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and modifications or variations without creative effort are still within the protection scope of the present invention.

Claims

1. A novel motor stator, comprising a stator body (1), wherein the stator body (1) has first stator slots (2) evenly spaced around its central circumference, and a first toothed plate (3) is formed between the first stator slots (2), characterized in that, The stator body (1) has symmetrically provided second stator slots (4) in the middle. The length of the second stator slot (4) is less than the length of the first stator slot (2). There is a second tooth plate (5) between two adjacent second stator slots (4). The width of the second tooth plate (5) is greater than the width of the first tooth plate (3).

2. The novel motor stator according to claim 1, characterized in that: There are four second stator slots (4), and the line connecting the two corresponding second stator slots (4) passes through the center of the stator body (1).

3. A novel motor stator according to claim 1, characterized in that: The width of the second toothed plate (5) is equal to the width between two adjacent first toothed plates (3) when the first stator slot (2) is not opened.

Images