CN201726295U - Two-electrode asynchronous starting permanent magnet synchronous motor for scroll compressor - Google Patents
Two-electrode asynchronous starting permanent magnet synchronous motor for scroll compressor Download PDFInfo
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- CN201726295U CN201726295U CN2010202467063U CN201020246706U CN201726295U CN 201726295 U CN201726295 U CN 201726295U CN 2010202467063 U CN2010202467063 U CN 2010202467063U CN 201020246706 U CN201020246706 U CN 201020246706U CN 201726295 U CN201726295 U CN 201726295U
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Abstract
The utility model relates to a two-electrode asynchronous starting permanent magnet synchronous motor for a scroll compressor, which comprises a stator, a rotor and a permanent magnetic body, wherein the stator is provided with 30 grooves, the rotor is provided with 34 grooves, the matching of the stator grooves and the rotor grooves adopts 30/34, the stator grooves are pear-shaped grooves, the rotor grooves are abnormal grooves, and the abnormal grooves are bottle-shaped closed opening grooves. The utility model has the technical progress that the matching of the stator grooves and the rotor grooves adopts 30/34, the additional torque and the pulsation torque can be effectively reduced, the noise vibration and the heat generation of the stator and the rotor can be obviously reduced, the efficiency of the motor can be improved, and the rotor adopts the special closed opening grooves, so the rotor does not need the secondary processing after the aluminum casting or copper casing, the conducting strip skin effect is obvious during starting, the starting performance can be improved, the utility model has good synchronous rotating speed traction capability, and the secondary copper damage can be reduced after the synchronous rotating speed is reached. A permanent magnet adopts a trapezoidal structure, so the magnet isolation measure is simple, and the utilization rate of the permanent magnetic body can be higher.
Description
Technical field
The utility model belongs to the screw compressor technical field, particularly two 4 pole asynchronous starting permanent magnet synchronous motors of screw compressor use.
Background technology
The constant-seed motor that screw compressor uses is based on squirrel cage AC induction motor, it is simple that squirrel cage AC induction motor has technology, cost is low, the advantage that reliability is high, therefore be widely used on the screw compressor always, but, can not satisfy the efficiency requirement to screw compressor of present proposition because itself efficient is lower.
Asynchronous starting permanent magnet synchronous motor is the desirable product of squirrel-cage induction AC motor that substitutes the constant speed screw compressor.
Asynchronous starting permanent magnet synchronous motor will be higher than conventional AC induction motor 3%-5% on running efficiency, reasonably design can also reach more than 0.98 power factor in the wider load scope, even power factor can alleviate the burden of electrical network for negative.Asynchronous starting permanent magnet synchronous motor not only efficient is higher than squirrel cage AC induction motor, can also reduce the loss on the transmission line.
Though asynchronous starting permanent magnet synchronous motor is having outstanding advantage aspect efficiency and the power factor (PF), starting, synchronous speed leads and the vibrating noise that turn round on also have obviously deficiency.
Summary of the invention
The purpose of this utility model be at starting, synchronous speed that existing two 4 pole asynchronous starting permanent magnet synchronous motors exist lead and the vibrating noise that turns round on deficiency, design a kind of can obviously improve two 4 pole asynchronous starting permanent magnet synchronous motors starting, synchronous speed lead into and two 4 pole asynchronous starting permanent magnet synchronous motors of behavior in service, make two 4 pole asynchronous starting permanent magnet synchronous motors of design have higher efficient and power factor.
In order to reach technical purpose of the present utility model, the utility model is by the following technical solutions: two 4 pole asynchronous starting permanent magnet synchronous motors that a kind of screw compressor uses, comprise stator, rotor and permanent magnet, it is characterized in that described stator opens 30 grooves, described rotor is opened 34 grooves, i.e. stator and rotor groove cooperation is 30/34; Described stator slot is a peariform slot, and rotor is special-shaped groove, and special-shaped groove is the ampuliform groove of remaining silent.
Two 4 pole asynchronous starting permanent magnet synchronous motors that a kind of screw compressor described in the utility model uses is characterized in that described permanent magnet is trapezoidal permanent magnet.
Two 4 pole asynchronous starting permanent magnet synchronous motors that a kind of screw compressor described in the utility model uses is characterized in that described trapezoidal permanent magnet is the permanent magnet with rare-earth permanent magnetic material system.
Technological progress of the present utility model is:
1, the stator and rotor groove cooperates employing 30/34, can effectively reduce additional torque, reduce motor pulsating torque, the noise vibration of motor is obviously reduced, reduce owing to harmonic wave simultaneously, the stator and rotor heating also can reduce, and not only can effectively reduce the ambient temperature of permanent magnet, can also improve motor efficiency.
2, rotor uses the special type groove of remaining silent, make rotor behind cast aluminium or cast copper, not need secondary operations, the rotor special shape makes its sliver kelvin effect when starting obvious, starting current reduces, startability is well improved simultaneously, because the rotor area is bigger, can guarantee that good synchronous speed leads into ability after starting, rotor bar does not have electric current after reaching synchronous speed, has reduced the secondary copper loss.
3, permanent magnet adopts trapezium structure, makes every the magnetic measure simply, guarantees that the permanent magnet utilance is higher.
Description of drawings
The utility model has accompanying drawing three width of cloth, wherein
Fig. 1 is the utility model stator core stamping sheet schematic diagram,
Fig. 2 is the utility model rotor core punching schematic diagram,
Fig. 3 is the special grooved schematic diagram of the utility model rotor.
Mark among the figure: 1-1, stator core stamping sheet; 1-2, stator slot; 2-1, rotor punching; 2-2, rotor; 2-3, permanent magnet submerged groove; 2-4, put 1 every magnetic potential; 2-5, put 2 every magnetic potential.
Embodiment
The utility model is described in further detail below in conjunction with the embodiment of accompanying drawing.
Fig. 1 is the stator core stamping sheet 1-1 of embodiment, and its stator slot 1-2 is a pyriform structure groove, and 30 stator slot 1-2 are evenly distributed along stator circumference.The stator core offline mode adopts with one heart positive chorded winding.
Fig. 2 is rotor punching 2-1, and rotor 2-2 uses special shape, is the ampuliform groove of remaining silent.The rotor number is 34, as Fig. 3.
Permanent magnet selects for use rare-earth permanent magnetic material to make.Among the permanent magnet submerged groove 2-3, permanent magnet is a trapezium structure, 2-1 works in coordination with rotor, between permanent magnet submerged groove 2-3 and rotor 2-1, be provided with every magnetic part 2-4,2-5, can use the simplest method to reduce leakage field, therefore, the utilance of permanent magnetic material also can correspondingly improve.Because less every the magnetic part, very little magnetic flux will reach capacity,, thus can effectively limit leakage field, but be difficult for too smallly every magnetic part 2-4,2-5, too small meeting makes the mechanical strength variation, and the punching press difficulty is strengthened.
Fig. 3 is the shape of rotor, adopts the groove of remaining silent can avoid the secondary operations of rotor, and rotor does not need secondary operations behind cast aluminium or cast copper, production efficiency is improved.Though this design can cause starting performance to descend, but by the kelvin effect of groove top in starting process of remaining silent, not only can reduce starting current, can also increase starting performance, the lower part is to play a major role after starting, because its relative sliver forms that other improve starting performance have bigger groove area relatively, therefore can have stronger leading into ability synchronously.
In the present embodiment, the stator and rotor groove adopts 30/34 fit system, can effectively reduce supplementary load loss, significantly reduces vibrating noise, raises the efficiency simultaneously.The stator core offline mode adopts with one heart positive chorded winding, can effectively reduce pulsating torque and improve electric efficiency.The remain silent rotor of slot type of ampuliform, when starting, because kelvin effect is obvious, can well improve starting performance, after starting because the other forms of relatively sliver of rotor bar, its relative area is bigger, so the motor speed capability of pulling in improves, and has overcome pull in the well problem of the ability variation or the ability primed starting difference of pulling in of startability.The permanent magnet of rare-earth permanent magnetic material when satisfying the machine operation temperature, has suitable remanent magnetism and higher HCJ, and less temperature coefficient is arranged simultaneously.
Claims (3)
1. two 4 pole asynchronous starting permanent magnet synchronous motors that use of a screw compressor comprise stator, rotor and permanent magnet, it is characterized in that described stator opens 30 grooves, and described rotor is opened 34 grooves, and promptly to cooperate be 30/34 to the stator and rotor groove; Described stator slot is a peariform slot, and rotor is special-shaped groove, and special-shaped groove is the ampuliform groove of remaining silent.
2. two 4 pole asynchronous starting permanent magnet synchronous motors that use according to the described a kind of screw compressor of claim 1 is characterized in that described permanent magnet is trapezoidal permanent magnet.
3. two 4 pole asynchronous starting permanent magnet synchronous motors that use according to the described a kind of screw compressor of claim 2 is characterized in that described trapezoidal permanent magnet is the permanent magnet with rare-earth permanent magnetic material system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202467063U CN201726295U (en) | 2010-07-01 | 2010-07-01 | Two-electrode asynchronous starting permanent magnet synchronous motor for scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202467063U CN201726295U (en) | 2010-07-01 | 2010-07-01 | Two-electrode asynchronous starting permanent magnet synchronous motor for scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201726295U true CN201726295U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202467063U Expired - Lifetime CN201726295U (en) | 2010-07-01 | 2010-07-01 | Two-electrode asynchronous starting permanent magnet synchronous motor for scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201726295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795957A (en) * | 2015-05-12 | 2015-07-22 | 山东大学 | Method for reducing cogging torque of asynchronous start permanent magnet synchronous motor |
| CN105284038A (en) * | 2013-07-01 | 2016-01-27 | 株式会社日立产机系统 | Rotating electric machine and manufacturing method thereof |
| CN107591916A (en) * | 2017-10-28 | 2018-01-16 | 泰州市姜堰德力电机有限公司 | The copper casting rotor and its processing technology of a kind of motor |
-
2010
- 2010-07-01 CN CN2010202467063U patent/CN201726295U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105284038A (en) * | 2013-07-01 | 2016-01-27 | 株式会社日立产机系统 | Rotating electric machine and manufacturing method thereof |
| CN105284038B (en) * | 2013-07-01 | 2018-04-10 | 株式会社日立产机系统 | Electric rotating machine and its manufacture method |
| CN104795957A (en) * | 2015-05-12 | 2015-07-22 | 山东大学 | Method for reducing cogging torque of asynchronous start permanent magnet synchronous motor |
| CN104795957B (en) * | 2015-05-12 | 2017-05-10 | 山东大学 | Method for reducing cogging torque of asynchronous start permanent magnet synchronous motor |
| CN107591916A (en) * | 2017-10-28 | 2018-01-16 | 泰州市姜堰德力电机有限公司 | The copper casting rotor and its processing technology of a kind of motor |
| CN107591916B (en) * | 2017-10-28 | 2023-05-30 | 德力电机有限公司 | Cast copper rotor of motor and processing technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: PANASONIC APPLIANCES COMPRESSOR (DALIAN) CO., LTD. Free format text: FORMER NAME: DALIAN SANYO COMPRESSOR CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 116600 Dalian economic and Technological Development Zone, Liaoning Pine Street, No. 8 Patentee after: Panasonic's compressor (Dalian) Co., Ltd Address before: 116033 No. 78 East Sea Road, Ganjingzi District, Liaoning, Dalian Patentee before: Dalian Sanyo Compressor Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |
|
| CX01 | Expiry of patent term |