CN110535255B - Stator and compressor - Google Patents
Stator and compressor Download PDFInfo
- Publication number
- CN110535255B CN110535255B CN201910735749.3A CN201910735749A CN110535255B CN 110535255 B CN110535255 B CN 110535255B CN 201910735749 A CN201910735749 A CN 201910735749A CN 110535255 B CN110535255 B CN 110535255B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressor (AREA)
Abstract
The utility model provides a stator and compressor, relates to compressor technical field, and this stator includes stator body, be provided with fan-shaped arch on stator body's the outward flange iron core, the quantity that fan-shaped arch set up is confirmed according to the greatest common divisor of the motor tooth groove number of this stator of installation. The fan-shaped protrusions are arranged to reduce the contact area between the stator and the machine body, reduce the contact between the stator and the machine body, weaken the transmission of vibration and play a role in noise reduction. The compressor comprises a shell and the stator, wherein the shell comprises an upper shell and a lower shell, and the lower shell is provided with a fan-shaped raised opening for mounting the stator. According to the invention, the lower shell is provided with the opening matched with the stator to reinforce the connection between the stator and the shell, so that the integral rigidity of the compressor is improved, the vibration is reduced, and the effect of reducing the noise is achieved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a stator and a compressor.
Background
For air conditioning products, besides paying attention to the cooling effect, noise is also a key for evaluating a product, and the generation of the noise seriously affects the experience of a user. In the operation process of the air conditioner, the noise is mainly caused by mechanical noise, aerodynamic noise, electromagnetic noise and the like, wherein the electromagnetic noise is excited by electromagnetic harmonics generated by a driving motor of the compressor in the operation process, and the stator vibrates due to the electromagnetic force and is transmitted to the shell through the outer surface of the stator to cause vibration of the shell in different degrees; the liquid distributor connected with the shell is subjected to vibration transmission of the motor, the shell of the liquid distributor is thin, and the radiation surface is large, so that 6-frequency multiplication vibration generated by the motor on the liquid distributor is obvious.
In the assembly process of the compressor, the stator and the shell are in interference fit, the holding force of the shell acting on the stator can generate certain influence on the roundness of the inner circle of the stator, so that an air gap magnetic field of the motor is not uniform, the radial electromagnetic force is increased, the noise influence is severe, the chamber sweeping phenomenon is generated when the noise influence is severe, even the inner circle of the stator locally generates high temperature, the insulation in a slot is broken down, and the grounding or short circuit of a winding is caused.
Therefore, the noise generated by the compressor has an inseparable relationship with the motor, and the reduction of the noise of the compressor is roughly divided into three categories: 1. the noise of an excitation source is reduced, and partial performance of the motor needs to be sacrificed so as to meet the noise requirement; 2. weakening from the vibration transmission path and weakening energy; 3. protection is provided for the recipient. The first and third aspects are relatively difficult to work with compared to the second method, so that most of the current methods for reducing the noise of the compressor motor start from the transmission path.
Disclosure of Invention
It is an object of the present invention to avoid the disadvantages of the prior art and to provide a stator having a noise reducing effect.
The purpose of the invention is realized by the following technical scheme:
the stator comprises a stator body, wherein fan-shaped protrusions are arranged on an outer edge iron core of the stator body, and the number of the fan-shaped protrusions is determined according to the greatest common divisor of the number of the motor tooth grooves for mounting the stator.
Preferably, 4 fan-shaped protrusions are arranged when the common divisor of the slot poles is 3, 3 fan-shaped protrusions are arranged when the common divisor of the slot poles is less than 3, and 5 fan-shaped protrusions are arranged when the common divisor of the slot poles is greater than 3. The contact area between the stator and the machine body is reduced by arranging the fan-shaped protrusions, so that the contact between the stator and the machine body is reduced, the transmission of vibration is weakened, and the noise is reduced.
Further, when the common divisor of the slot poles is 3, the fan-shaped protrusions are arranged at positions which are clockwise with the central line of the stator teeth of the stator body being 0 °, and are respectively arranged with the positions of the central line being clockwise 0 °, 90 °, 170 ° and 265 ° as central lines.
Further, when the common divisor of the slot poles is less than 3, the fan-shaped protrusions are arranged at positions which are clockwise with the central line of the stator teeth of the stator body being 0 degree, and are respectively arranged with the positions of the central line being clockwise 0 degree, 90 degrees and 265 degrees as central lines.
Further, when the common divisor of the slot poles is greater than 3, the fan-shaped protrusions are arranged at positions which are clockwise with the central line of the stator teeth of the stator body being 0 degree, and are respectively arranged with the positions of the central line being clockwise 0 degree, 90 degrees, 170 degrees, 225 degrees and 265 degrees as central lines.
Furthermore, the angle of the fan-shaped protrusion arranged at the 0-degree position is alpha, the angle of the fan-shaped protrusion arranged at the 90-degree position is alpha 3, the angle between the center line of the fan-shaped protrusion and the center line of the stator tooth closest to the center line of the fan-shaped protrusion is alpha 4, and alpha 3 is larger than 2 alpha 4; the angle of the fan-shaped bulge arranged at the position of 170 degrees is alpha 2, the angle between the center line of the fan-shaped bulge and the center line of the stator tooth closest to the fan-shaped bulge is alpha 5, and alpha 5 & gt, nerve alpha 2; the angle of the fan-shaped bulge arranged at the 265-degree position is alpha 1, the angle of the central line of the fan-shaped bulge and the central line of the stator tooth closest to the fan-shaped bulge is alpha 6, alpha 6 & gtAs alpha 1, and alpha is larger than alpha 1 to alpha 6, and the noise reduction effect is optimal at the moment.
Furthermore, the angle of the fan-shaped protrusion arranged at the 0-degree position is alpha, the angle of the fan-shaped protrusion arranged at the 90-degree position is alpha 3, the angle between the center line of the fan-shaped protrusion and the center line of the stator tooth closest to the center line of the fan-shaped protrusion is alpha 4, and alpha 3 is larger than 2 alpha 4; the angle of the fan-shaped bulge arranged at the 265-degree position is alpha 1, the angle of the central line of the fan-shaped bulge and the central line of the stator tooth closest to the fan-shaped bulge is alpha 6, alpha 6 & gtAs alpha 1, and alpha is larger than alpha 1, alpha 3, alpha 4 and alpha 6, so that the noise reduction effect is optimal.
Furthermore, the angle of the fan-shaped protrusion arranged at the 0-degree position is alpha, the angle of the fan-shaped protrusion arranged at the 90-degree position is alpha 3, the angle between the center line of the fan-shaped protrusion and the center line of the stator tooth closest to the center line of the fan-shaped protrusion is alpha 4, and alpha 3 is larger than 2 alpha 4; the angle of the fan-shaped bulge arranged at the position of 170 degrees is alpha 2, the angle between the center line of the fan-shaped bulge and the center line of the stator tooth closest to the fan-shaped bulge is alpha 5, and alpha 5 & gt, nerve alpha 2; the angle of the fan-shaped bulge arranged at the 265-degree position is alpha 1, the angle of the center line of the fan-shaped bulge and the center line of the stator tooth closest to the fan-shaped bulge is alpha 6, alpha 6 & gt alpha 1, one fan-shaped bulge with the same size as alpha 2 is arranged at the 225-degree position, and the noise reduction effect is optimal when alpha is larger than alpha 1 to alpha 6.
It is a further object of the present invention to avoid the disadvantages of the prior art and to provide a compressor which reduces noise during operation.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a compressor, includes the casing, still includes foretell stator, the casing includes upper housing, lower casing, offer the fan-shaped bellied opening that is used for installing the stator on the casing down. The connection between the stator and the shell is reinforced, so that the integral rigidity of the compressor is improved, and the vibration is reduced.
Furthermore, the central line of the fan-shaped bulge arranged at the 0-degree position is right opposite to the central line of the liquid distributor on the lower shell, and the extension lines of the two sides of the fan-shaped bulge are tangent to the liquid distributor. The problem of vibration increase caused by resonance of components such as a liquid separator and a compressor motor is solved.
Furthermore, the maximum radius of the outer circle of the stator is R1, the radius of the inner circle of the shell is R2, and the radius of the minimum outer circle of the stator is R3, so that the requirements that R2-R3= 0.1-0.15 mm and 3.5mm is larger than or equal to R1-R2 is larger than or equal to 3mm are met. A partial gap is increased between the shell and the stator, and the contact area between the stator and the shell is reduced, so that the transmission of vibration is reduced.
The invention has the beneficial effects that: 1. the invention relates to a stator which comprises a stator body, wherein fan-shaped protrusions are arranged on an iron core on the outer edge of the stator body, the number of the fan-shaped protrusions is determined according to the greatest common divisor of the number of tooth slots of a motor for mounting the stator, 4 fan-shaped protrusions are arranged when the common divisor of slot poles is 3, 3 fan-shaped protrusions are arranged when the common divisor of slot poles is less than 3, and 5 fan-shaped protrusions are arranged when the common divisor of slot poles is more than 3. 2. The compressor comprises a shell and the stator, wherein the shell comprises an upper shell and a lower shell, and the lower shell is provided with a fan-shaped raised opening for mounting the stator. According to the invention, the lower shell is provided with the opening matched with the stator to reinforce the connection between the stator and the shell, so that the integral rigidity of the compressor is improved, the vibration is reduced, and the effect of reducing the noise is achieved.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic view of the overall structure of a stator of the present invention.
Fig. 2 is an exploded view showing the overall structure of a compressor according to the present invention.
Fig. 3 is a schematic view of the overall structure of the stator, the lower housing and the dispenser of the present invention.
Fig. 4 is a graph comparing noise of a compressor of the present invention with that of a general compressor.
The figure includes:
stator 1, fan-shaped protrusion 11, stator tooth 12, casing 2, upper casing 21, lower casing 22, opening 23, knockout 3.
Detailed Description
The invention is further described with reference to the following examples.
The stator of this embodiment is specifically described with reference to a 9-slot 6-pole motor, as shown in fig. 1, the stator includes a stator 1 body, a sector protrusion 11 is disposed on an outer edge iron core of the stator 1 body, the number of the sector protrusion 11 is determined according to the greatest common divisor of the number of the motor slots on which the stator 1 is mounted, the common divisor of the slot poles is 3, 4 sector protrusions 11 are disposed, the contact area between the stator 1 and the machine body is reduced by disposing the sector protrusion 11, the contact between the stator 1 and the machine body is reduced, the transmission of vibration is weakened, and the noise is reduced.
When the common divisor of the slot poles is 3, the fan-shaped protrusions 11 are arranged at positions which are clockwise with the center line of the stator teeth 12 of the stator 1 body being 0 degree, and are respectively arranged at positions which are clockwise with the center line being 0 degree, 90 degrees, 170 degrees and 265 degrees.
The angle of the fan-shaped protrusion 11 arranged at the 0-degree position is alpha, the angle of the fan-shaped protrusion 11 arranged at the 90-degree position is alpha 3, the angle between the center line of the fan-shaped protrusion 11 and the center line of the stator tooth 12 closest to the center line of the fan-shaped protrusion is alpha 4, and alpha 3 is larger than 2 alpha 4; the angle of the fan-shaped protrusion 11 arranged at the position of 170 degrees is alpha 2, the angle between the center line of the fan-shaped protrusion 11 and the center line of the stator tooth 12 closest to the center line is alpha 5, alpha 5 & gt, As alpha 2; the angle of the fan-shaped projection 11 arranged at the 265-degree position is alpha 1, the angle of the central line of the fan-shaped projection 11 and the central line of the stator tooth 12 closest to the central line is alpha 6, and alpha 6 & gt As 1, alpha is larger than alpha 1 to alpha 6, and the noise reduction effect is optimal at the moment.
The invention also provides a compressor with the stator 1, as shown in fig. 2 and 3, the compressor comprises a shell 2 and the stator 1, wherein the shell comprises an upper shell 21 and a lower shell 22, and the lower shell 22 is provided with an opening 23 for installing the fan-shaped protrusion 11 of the stator 1. The connection between the stator 1 and the housing 2 is reinforced, so that the overall rigidity of the compressor is improved, and vibration is reduced.
The central line of the fan-shaped bulge 11 arranged at the 0-degree position is just opposite to the central line of the liquid distributor 3 on the lower shell 22, and the extension lines of the two sides of the fan-shaped bulge 11 are tangent to the liquid distributor 3. The problem of vibration increase caused by resonance of components such as the liquid separator 3 and a compressor motor is solved.
The maximum radius of the outer circle of the stator 1 is R1, the radius of the inner circle of the shell 2 is R2, the radius of the minimum outer circle of the stator 1 is R3, R2-R3= 0.1-0.15 mm is met, and 3.5mm is larger than or equal to R1-R2 and larger than or equal to 3 mm. A partial gap is increased between the housing 2 and the stator 1, and a contact area between the stator 1 and the housing 2 is reduced, thereby reducing transmission of vibration.
According to the above, the stamped sheets of the stator 1 are connected by adopting the silicon steel self-adhesive coating, so that the sealing property between the stamped sheets is ensured; the shell opening 23 is opened according to the position and size of the fan-shaped bulge 11 of the stator 1, wherein a certain gap exists between the minimum outer diameter R3 of the stator 1 and the second part inner diameter R2, so that the stator 1 is not in contact with the shell 2, and the transmission of noise and vibration is correspondingly weakened. During assembly, the lower shell 22 and the stator 1 are installed well, contact positions of the fan-shaped protrusions 11 and the openings 23 are welded, then the compressor is normally assembled, after the pump body is assembled, the upper shell 21 covers the lower shell 22, the center line of the support of the liquid distributor 3 is aligned with the center line of the air inlet of the lower shell 22, then welding is conducted, and finally the liquid distributor 3 assembly is installed.
The point distribution simulation is carried out in the circumferential direction of the compressor motor, the data is shown in figure 4, and the surface and interior data show that the vibration can be reduced by 40% -50% compared with the common scheme.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A stator, comprising a stator body, characterized in that: fan-shaped bulges are arranged on the iron core at the outer edge of the stator body, and the number of the fan-shaped bulges is determined according to the greatest common divisor of the number of slot poles for mounting the stator; when the greatest common divisor of the number of the groove poles is 3, 4 fan-shaped protrusions are arranged, when the greatest common divisor of the number of the groove poles is less than 3, 3 fan-shaped protrusions are arranged, and when the greatest common divisor of the number of the groove poles is greater than 3, 5 fan-shaped protrusions are arranged.
2. A stator according to claim 1, wherein: when the greatest common divisor of the number of the slot poles is 3, the fan-shaped protrusions are arranged at the positions which are clockwise by taking the central line of the stator teeth of the stator body as 0 degree, and are respectively arranged by taking the positions which are clockwise by 0 degree, 90 degrees, 170 degrees and 265 degrees of the central line as the central line.
3. A stator according to claim 1, wherein: when the greatest common divisor of the number of the slot poles is less than 3, the fan-shaped protrusions are arranged at the positions which are clockwise by taking the central line of the stator teeth of the stator body as 0 degree, and are respectively arranged by taking the positions which are clockwise by 0 degree, 90 degrees and 265 degrees of the central line as the central line.
4. A stator according to claim 1, wherein: when the greatest common divisor of the number of the slot poles is more than 3, the fan-shaped protrusions are arranged at the positions which are clockwise with the central line of the stator teeth of the stator body being 0 degree and are respectively arranged with the positions of the central line being clockwise 0 degree, 90 degrees, 170 degrees, 225 degrees and 265 degrees as the central line.
5. A stator according to claim 2, wherein: the angle of the fan-shaped bulge arranged at the 0-degree position is alpha, the angle of the fan-shaped bulge arranged at the 90-degree position is alpha 3, the angle between the central line of the fan-shaped bulge and the central line of the stator tooth closest to the fan-shaped bulge is alpha 4, and alpha 3 is more than 2 alpha 4; the angle of the fan-shaped bulge arranged at the position of 170 degrees is alpha 2, the angle between the center line of the fan-shaped bulge and the center line of the stator tooth closest to the fan-shaped bulge is alpha 5, and alpha 5 is more than 1/2 alpha 2; the angle of the fan-shaped bulge arranged at the 265-degree position is alpha 1, the angle between the center line of the fan-shaped bulge and the center line of the stator tooth closest to the fan-shaped bulge is alpha 6, alpha 6 is larger than 1/2 alpha 1, and alpha is larger than alpha 1 to alpha 6.
6. A stator according to claim 3, wherein: the angle of the fan-shaped bulge arranged at the 0-degree position is alpha, the angle of the fan-shaped bulge arranged at the 90-degree position is alpha 3, the angle between the central line of the fan-shaped bulge and the central line of the stator tooth closest to the fan-shaped bulge is alpha 4, and alpha 3 is more than 2 alpha 4; the angle of the fan-shaped bulge arranged at the 265-degree position is alpha 1, the angle between the center line of the fan-shaped bulge and the center line of the stator tooth closest to the fan-shaped bulge is alpha 6, alpha 6 is larger than 1/2 alpha 1, and alpha is larger than alpha 1, alpha 3, alpha 4 and alpha 6.
7. A stator according to claim 4, wherein: the angle of the fan-shaped bulge arranged at the 0-degree position is alpha, the angle of the fan-shaped bulge arranged at the 90-degree position is alpha 3, the angle between the central line of the fan-shaped bulge and the central line of the stator tooth closest to the fan-shaped bulge is alpha 4, and alpha 3 is more than 2 alpha 4; the angle of the fan-shaped bulge arranged at the position of 170 degrees is alpha 2, the angle between the center line of the fan-shaped bulge and the center line of the stator tooth closest to the fan-shaped bulge is alpha 5, and alpha 5 is more than 1/2 alpha 2; the angle of the fan-shaped bulge arranged at the 265-degree position is alpha 1, the angle of the central line of the fan-shaped bulge and the central line of the stator tooth closest to the fan-shaped bulge is alpha 6, alpha 6 is larger than 1/2 alpha 1, the fan-shaped bulge with the same size as alpha 2 is arranged at the 225-degree position, and alpha is larger than alpha 1 to alpha 6.
8. A compressor, includes the casing, the casing includes upper housing, lower casing, its characterized in that: the stator of any one of claims 1 to 7, wherein the lower shell is provided with an opening for mounting a fan-shaped protrusion of the stator.
9. A compressor as set forth in claim 8, wherein: the central line of the fan-shaped bulge arranged at the 0-degree position is just opposite to the central line of the liquid distributor on the lower shell, and the extension lines of the two sides of the fan-shaped bulge are tangent to the liquid distributor.
10. A compressor as claimed in claim 8 or 9, wherein: the maximum radius of the outer circle of the stator is R1, the radius of the inner circle of the shell is R2, and the radius of the minimum outer circle of the stator is R3, so that the requirements that R2-R3 is 0.1-0.15 mm, and 3.5mm is larger than or equal to R1-R2 is larger than or equal to 3mm are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735749.3A CN110535255B (en) | 2019-08-09 | 2019-08-09 | Stator and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735749.3A CN110535255B (en) | 2019-08-09 | 2019-08-09 | Stator and compressor |
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| Publication Number | Publication Date |
|---|---|
| CN110535255A CN110535255A (en) | 2019-12-03 |
| CN110535255B true CN110535255B (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735749.3A Active CN110535255B (en) | 2019-08-09 | 2019-08-09 | Stator and compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN110535255B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486092A (en) * | 2020-04-24 | 2020-08-04 | 广东美芝制冷设备有限公司 | Rotary compressor and method for manufacturing rotary compressor |
| CN114094729A (en) * | 2021-11-19 | 2022-02-25 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1189195A (en) * | 1997-09-10 | 1999-03-30 | Nippon Electric Ind Co Ltd | Stator structure for sr motor |
| JP5783898B2 (en) * | 2011-12-28 | 2015-09-24 | 日立アプライアンス株式会社 | Permanent magnet motor and compressor |
| CN204156621U (en) * | 2014-11-04 | 2015-02-11 | 广东美芝制冷设备有限公司 | Stator punching, motor and compressor |
| CN206595778U (en) * | 2017-03-31 | 2017-10-27 | 广东威灵电机制造有限公司 | The stator core and motor of motor |
| CN109962541A (en) * | 2017-12-26 | 2019-07-02 | 上海海立电器有限公司 | The manufacturing method of motor stator, compressor and compressor |
| CN207939278U (en) * | 2018-03-07 | 2018-10-02 | 广东美的生活电器制造有限公司 | Food processor and motor for food processor |
| CN208299553U (en) * | 2018-06-15 | 2018-12-28 | 珠海格力电器股份有限公司 | Stator core, stator module and motor |
| CN109245336A (en) * | 2018-11-15 | 2019-01-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor electric motor and the compressor for applying it |
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2019
- 2019-08-09 CN CN201910735749.3A patent/CN110535255B/en active Active
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