CN203967845U - Motor - Google Patents
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- Publication number
- CN203967845U CN203967845U CN201320692562.8U CN201320692562U CN203967845U CN 203967845 U CN203967845 U CN 203967845U CN 201320692562 U CN201320692562 U CN 201320692562U CN 203967845 U CN203967845 U CN 203967845U
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- Prior art keywords
- motor according
- motor
- stator
- rotor
- tooth
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- 238000004804 winding Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 229920003023 plastic Polymers 0.000 claims description 18
- 239000004033 plastic Substances 0.000 claims description 18
- 238000013016 damping Methods 0.000 claims description 14
- 210000003205 muscle Anatomy 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Abstract
The utility model relates to motor, comprise stator, rotor and end cap, described stator comprises stator core and winding, described stator core has a plurality of teeth, every pair of adjacent teeth in described a plurality of tooth defines stator slot, described winding is arranged in described stator slot and the tooth rim that is wrapped in described stator core encloses, and wherein, on the tooth of described stator core, has auxiliary tank.Because the utility model is opened auxiliary tank on the tooth of the stator of motor, can slacken the larger noise amplitude of relative low-frequency range, replace increasing compared with small magnitude of relative high frequency section, thereby reduce noise and improve the timbre matter of motor.
Description
Technical field
The utility model relates to mechanical field, relates in particular to a kind of motor.
Background technology
Along with the anxiety of the energy and the continuous aggravation of air pollution, various new energy saving policies have all been released in countries in the world, and also can increase sharply to the demand of energy-efficient permanent magnet motor in market thereupon.In roller washing machine field, now general is series-wound motor, variable frequency induction motor and direct-drive permanent-magnetism brushless motor.Cleaning than constant in the situation that, if do not extend the mode of washing time by reducing wash temperature, these 3 kinds of type of drive all can not reach A level energy conservation standard.At a low price, efficient, quiet is 3 requirements that current roller washing machine proposes drive motor.Belt drives permanent magnet brushless electromotor has this 3 features, and large and two the high existing advantages of efficiency of its power density make it can surmount 3 kinds of existing motor at 2 in efficiency, price.
But there is noise problem in belt drives permanent magnet brushless electromotor.Belt drives permanent magnet brushless electromotor is high-speed motor, and permanent magnet, brought power and the large advantage of efficiency two to motor outside, has also brought noise problem.Due to the objective reality of rotor permanent magnet to the radially Reeb of stator tooth, belt drives permanent magnet brushless electromotor when running up, radially Reeb can with stator armature and electric motor structure acting in conjunction, send the noise of various frequency ranges, client cannot be accepted.
Utility model content
In order to overcome the above problems, in the utility model, on the tooth of stator, open auxiliary tank, thereby can effectively reduce the noise of motor, can reduce especially 32 frequency multiplication noises of 36 groove 8 utmost point belt drives permanent magnet brushless electromotors, thereby can make belt drives permanent magnet brushless electromotor there is the same or lower noise level of existing belt drives variable frequency induction motor.Simultaneously, on the tooth of stator, open the fractional slot winding permanent magnet brushless electromotor that auxiliary tank coordinates for other utmost point groove and also have same effect, can slacken the larger noise amplitude of relative low-frequency range, replace increasing compared with small magnitude of relative high frequency section, thereby reduce noise and improve the timbre matter of motor.In addition, in the utility model, on the sidewall of end cap, ad-hoc location is cast with the vibration damping muscle of given shape and quality.Vibration damping muscle can be to carrying out damping for characteristic frequency, thereby further reduce motor overall noise and improve the timbre matter of motor.
In an embodiment of the present utility model, a kind of motor is provided, comprise stator, rotor and end cap, described stator comprises stator core (for example stator core) and winding, described stator core has a plurality of teeth, and every pair of adjacent teeth in described a plurality of teeth defines stator slot, and described winding is arranged in described stator slot and the tooth rim that is wrapped in described stator core encloses, wherein, on the tooth of described stator core, there is auxiliary tank.
In a preferred implementation, described auxiliary tank is positioned at the crown place of each tooth and symmetrical about the tooth axis of each tooth.
In a preferred implementation, the width of described auxiliary tank equals the width of rebate of described stator slot.
In a preferred implementation, the degree of depth of described auxiliary tank is 0.6mm to 1.5mm.
In a preferred implementation, described stator has 36 teeth, and defines 36 stator slots.
In a preferred implementation, the internal diameter of described stator is 65mm to 78mm.
In a preferred implementation, described stator has at least 0.63 internal diameter and minimum outer diameter ratio.
In a preferred implementation, described end cap is end cover.
In a preferred implementation, the sidewall of described end cap has radiating ribs.
In a preferred implementation, the sidewall of described end cap has the effective vibration damping muscle of characteristic frequency.
In a preferred implementation, described end cap comprises front end housing and rear end cap, and described vibration damping muscle is positioned at the middle position of left and right, lower three sidewalls of described rear end cap.
In a preferred implementation, described vibration damping muscle is effective to the frequency of 7000-8200HZ.
In a preferred implementation, described winding is aluminum steel winding.
In a preferred implementation, described winding is fractional-slot distributed winding.
In a preferred implementation, described rotor is 8 grades of ferrite permanent-magnet rotors.
In a preferred implementation, at the two ends of described rotor, respectively form a plastics end ring, so that the balance duplicate removal of rotor integral body.
In a preferred implementation, described plastics end ring has duplicate removal hole, and the degree of depth in described duplicate removal hole is not more than the diameter in described duplicate removal hole.
In a preferred implementation, described plastics end ring has magnet steel, and described magnet steel is spoke and distributes.
In a preferred implementation, described plastics end ring has location hole, and the degree of depth of described location hole is not more than the diameter of described location hole.
In a preferred implementation, described rotor has slotted eye at pole center position.
In a preferred implementation, described rotor is provided with the spoke band for being connected with rotor hub with magnetic pole.
In a preferred implementation, the outer cause iron core bridge sealing of the magnet steel groove of described rotor.
In a preferred implementation, in the outer rim of the rotor hub of described rotor, be provided with lance tooth.
In a preferred implementation, the speed adjustable range of described motor is 350rpm to 18000rpm.
By the technical solution of the utility model, on the tooth of the stator of motor, open auxiliary tank, can slacken the larger noise amplitude of relative low-frequency range, replace increasing compared with small magnitude of relative high frequency section, thereby reduce noise and improve the timbre matter of motor.
Accompanying drawing explanation
Fig. 1 serves as reasons according to the schematic diagram of the motor of the utility model one embodiment;
Fig. 2 is according to the schematic diagram of the stator of the motor of an embodiment of the present utility model;
Fig. 3 a and Fig. 3 b are according to the schematic diagram of the end cap of the motor of an embodiment of the present utility model;
Fig. 4 a and Fig. 4 b are according to the schematic diagram of the plastics end ring of the motor of an embodiment of the present utility model;
Fig. 5 is according to the schematic diagram of the rotor of the motor of an embodiment of the present utility model.
Embodiment
Referring now to accompanying drawing 1, Fig. 1 shows the motor of the embodiment that the utility model provides, comprises stator 101, rotor 102 and end cap 103,104.Wherein, stator comprises stator core and winding, and stator core has a plurality of teeth, and every pair of adjacent teeth in a plurality of teeth defines stator slot, and winding is arranged in stator slot and the tooth rim that is wrapped in stator core encloses.The feature of motor of the present utility model is to have auxiliary tank on the tooth of stator core.Auxiliary tank doubles the total groove number on stator core, for fractional slot winding motor, make the electric and magnetic oscillation producing due to slot effect between the rotor magnetic pole of motor and stator tooth by low frequency migration high frequency, thereby replaced low-frequency vibration with dither, the amplitude of electric and magnetic oscillation is obviously reduced, when reducing noise, also can improve the timbre matter of motor.
Preferably, the motor that the utility model provides is the ferrite aluminum steel 8 utmost point 36 groove belt drives brushless permanent magnet electromotors for head roll washing machine.Compare with 2 utmost points or 4 pole motors, the winding packet header at the stator two ends of 8 pole motors of the present utility model is less, causes enamelled wire utilance to increase.In addition, 36 groove stator winding coilings of the present utility model do not need special coil winding machine, and its winding construction is the same with induction motor, can with induction motor general the same common coil winding machine and technique, reduced equipment investment.
Referring now to accompanying drawing 2, Fig. 2 shows the stator of the embodiment that the utility model provides, and it has interior diameter 201, and interior diameter 201 is preferably 65mm to 78mm.The winding of stator is fractional-slot distributed winding.Distributed winding can be improved motor air gap magnetic field makes it convergence Sine distribution, reduces motor vibration and noise.Fractional slot winding can reduce the utmost point effect of grooves, reduces to act on the electromagnetic force tangentially, radially between stator tooth and rotor magnetic pole, reduces the noise and vibration of motor.In an optional embodiment, the winding of stator is aluminum steel winding.
Continue as shown in Figure 2, stator has 36 teeth, and defines 36 stator slots, and the crown of each tooth is sentenced tooth axis and had symmetrically auxiliary tank 203, and the width of auxiliary tank 203 equals the width of rebate of stator slot 202.Preferably, the degree of depth of auxiliary tank 203 is 0.6mm to 1.5mm.
Continuation is with reference to Fig. 2, and stator has minimum exterior diameter 204.Minimum exterior diameter is minimum when considering all diameters of stator outer peripheral edges.Interior diameter 201 is more than or equal to 0.63:1 with the ratio of minimum exterior diameter 204, therefore, is with at least weak magnetic scope operation of 5:1, and has reduced leakage field by motor configurations, makes flux loss reduce by 20%.In addition, large external diameter rotor of the present utility model is compared with little external diameter rotor, has higher torque density, thereby the few cost of motor materials is low.For same speed governing and weak magnetic scope, motor of the present utility model has shorter folded thick, thereby causes motor weight still less, cost of labor still less and logistics cost still less.
Referring now to accompanying drawing 3a and Fig. 3 b, show the end cap of the motor of the embodiment that the utility model provides, this end cap is end cover, and is cast with radiating ribs 301 and vibration damping muscle 302 on this end cap sidewall.Wherein, radiating ribs 301 is for heat radiation.Vibration damping muscle 302 is for carrying out damping for characteristic frequency, thereby reduced motor overall noise and improved the timbre matter of motor.Particularly, Fig. 3 a shows the front end housing of motor, and Fig. 3 b shows the rear end cap of motor, and vibration damping muscle 302 can be preferably located in the middle position of left and right, lower three sidewalls of rear end cap.Because the peak value of the oscillation intensity of motor is near the frequency of 7000-8200Hz, so preferably, vibration damping muscle 302 can be effective to the frequency of 7000-8200Hz, thereby weaken to the full extent the vibration of 8000HZ frequency.
Referring now to accompanying drawing 4a and Fig. 4 b, show the plastics end ring of the end of the motor that is formed on the embodiment that the utility model provides, so that the balance duplicate removal of rotor integral body.Preferably, at the two ends of rotor, respectively form a plastics end ring, this plastics end ring can be BMC (BMC) end ring, and plastics end ring has duplicate removal hole 401 and location hole 402.Preferably, the degree of depth in duplicate removal hole 401 is not more than the diameter in described duplicate removal hole, and the degree of depth of location hole 402 is not more than the diameter of described location hole.This location hole 402 can be for the location of rotor core.In addition, plastics end ring also has magnet steel 403, and magnet steel is spoke and distributes.For the magnet steel of same quality, because being spoke, the magnet steel of plastics end ring of the present utility model distributes, and can make magnet steel when high speed, bear centrifugal force minimum, reduce the risk that rotor is out of shape when high speed, thereby be suitable for permanent magnetic material, be ferritic high-speed motor.Spoke type Interior permanent magnet rotor structure of the present utility model has reduced magnet steel tangential dimension, radial dimension is increased, magnet steel for same volume can reduce magnet steel centrifugal force to greatest extent, the danger of rotor deformation while having reduced widely high speed, be conducive to magnet steel is along the circumferential direction evenly distributed simultaneously, reduce the magnetic bias pulling force after magnetizing, reduced high speed noise.
Fig. 5 shows according to the rotor of the motor of an embodiment of the present utility model, it comprises rotor hub 1, magnetic pole 2, the spoke band 3 being connected with magnetic pole with rotor hub, lance tooth 4 for transmitting torque, for the slotted eye 5 of injected plastic, magnet steel groove 6 and for the iron core bridge 7 of the outer rim of sealed magnetic steel tank 6.Wherein, at pole center position, have slotted eye 5 for injected plastic, thereby strengthen rotor mechanical intensity, rotor solution body deformability while avoiding high speed.Be provided with the spoke band 3 being connected with magnetic pole with rotor hub, to realize the mechanical connection that forms the rotor magnetic pole part of magnetic circuit and the rotor hub part of transmitting torque.The outer rim of magnet steel groove 6, by iron core bridge 7 sealing, connects two end ring to gain in strength thereby both can fill BMC in seal cavity, also can make rotor smooth in appearance, so that the noise while reducing high speed.The lance tooth 4 arranging in the outer rim of rotor hub is born moment of torsion transmission together with the plastic construction of injecting.
One preferred embodiment in, the speed adjustable range 350rpm to 18000rpm of the motor that the utility model provides.
Pass through the technical solution of the utility model, can use the larger winding (as aluminum steel winding) of resistivity that diameter is thicker to carry out the design of motor, guaranteeing to have realized the low cost of motor under the prerequisite that motor performance remains unchanged substantially with original motor (as copper cash winding), thereby improving greatly the motor market competitiveness.In addition, by the technical solution of the utility model, also can adopt the thicker copper cash winding scheme of wire diameter further to reduce the winding loss of motor, thereby the more high efficiency that can realize motor improve the market competitiveness.
When introducing the element of the utility model or embodiment, article " ", " one ", " being somebody's turn to do ", " described " are intended to represent to exist one or more this element.Term " comprises ", " comprising " and " having " comprising property, and existence other element except listed element that is intended to express possibility.
Owing to can above-mentioned structure be carried out to multiple modification in the situation that not departing from scope of the present utility model, specification above comprises and all themes shown in the drawings will be interpreted as illustrative, rather than restrictive.
Above embodiment of the present utility model is had been described in detail; the foregoing is only embodiment of the present utility model; for a person skilled in the art; the utility model can have multiple variation and change; all within spirit of the present utility model and principle, any modification of making or be equal to is replaced etc. and all should be included in protection range of the present utility model.
Claims (23)
1. a motor, comprises stator, rotor and end cap, and described stator comprises stator core and winding, described stator core has a plurality of teeth, every pair of adjacent teeth in described a plurality of tooth defines stator slot, and described winding is arranged in described stator slot and the tooth rim that is wrapped in described stator core encloses
It is characterized in that, described motor is the small-sized distributed winding motor for household electrical appliance, on the tooth of described stator core, there is auxiliary tank, thereby slacken the larger noise amplitude of relative low-frequency range, replace increasing compared with small magnitude of relative high frequency section, to reduce noise and improve the timbre matter of motor, the sidewall of described end cap has the effective vibration damping muscle of characteristic frequency.
2. motor according to claim 1, is characterized in that, described auxiliary tank is positioned at the crown place of each tooth and symmetrical about the tooth axis of each tooth.
3. motor according to claim 1, is characterized in that, the width of described auxiliary tank equals the width of rebate of described stator slot.
4. motor according to claim 1, is characterized in that, the degree of depth of described auxiliary tank is 0.6mm to 1.5mm.
5. motor according to claim 1, is characterized in that, described stator has 36 teeth, and defines 36 stator slots.
6. motor according to claim 1, is characterized in that, the internal diameter of described stator is 65mm to 78mm.
7. motor according to claim 1, is characterized in that, described stator has at least 0.63 internal diameter and minimum outer diameter ratio.
8. motor according to claim 1, is characterized in that, described end cap is end cover.
9. motor according to claim 1, is characterized in that, the sidewall of described end cap has radiating ribs.
10. motor according to claim 1, is characterized in that, described end cap comprises front end housing and rear end cap, and described vibration damping muscle is positioned at the middle position of left and right, lower three sidewalls of described rear end cap.
11. motor according to claim 1, is characterized in that, described vibration damping muscle is effective to the frequency of 7000-8200Hz.
12. motor according to claim 1, is characterized in that, described winding is aluminum steel winding.
13. motor according to claim 1, is characterized in that, described winding is fractional-slot distributed winding.
14. motor according to claim 1, is characterized in that, described rotor is 8 grades of ferrite permanent-magnet rotors.
15. motor according to claim 1, is characterized in that, at the two ends of described rotor, respectively form a plastics end ring, so that the balance duplicate removal of rotor integral body.
16. motor according to claim 15, is characterized in that, described plastics end ring has duplicate removal hole, and the degree of depth in described duplicate removal hole is not more than the diameter in described duplicate removal hole.
17. motor according to claim 15, is characterized in that, described plastics end ring has magnet steel, and described magnet steel is spoke and distributes.
18. motor according to claim 15, is characterized in that, described plastics end ring has location hole, and the degree of depth of described location hole is not more than the diameter of described location hole.
19. motor according to claim 1, is characterized in that, described rotor has slotted eye at pole center position.
20. motor according to claim 1, is characterized in that, described rotor is provided with the spoke band for being connected with rotor hub with magnetic pole.
21. motor according to claim 1, is characterized in that, the outer cause iron core bridge sealing of the magnet steel groove of described rotor.
22. motor according to claim 1, is characterized in that, in the outer rim of the rotor hub of described rotor, are provided with lance tooth.
23. motor according to claim 1, is characterized in that, the speed adjustable range of described motor is 350rpm to 18000rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320692562.8U CN203967845U (en) | 2013-11-05 | 2013-11-05 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320692562.8U CN203967845U (en) | 2013-11-05 | 2013-11-05 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203967845U true CN203967845U (en) | 2014-11-26 |
Family
ID=51928389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320692562.8U Expired - Lifetime CN203967845U (en) | 2013-11-05 | 2013-11-05 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203967845U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429408A (en) * | 2015-12-22 | 2016-03-23 | 佛山市威灵洗涤电机制造有限公司 | Squirrel-cage type rotor, motor and washing machine |
| CN110768398A (en) * | 2018-07-25 | 2020-02-07 | 广东美芝制冷设备有限公司 | Motor structure and compressor |
| CN112865366A (en) * | 2021-01-15 | 2021-05-28 | 珠海格力电器股份有限公司 | Driving motor and electric automobile with same |
-
2013
- 2013-11-05 CN CN201320692562.8U patent/CN203967845U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429408A (en) * | 2015-12-22 | 2016-03-23 | 佛山市威灵洗涤电机制造有限公司 | Squirrel-cage type rotor, motor and washing machine |
| CN110768398A (en) * | 2018-07-25 | 2020-02-07 | 广东美芝制冷设备有限公司 | Motor structure and compressor |
| CN112865366A (en) * | 2021-01-15 | 2021-05-28 | 珠海格力电器股份有限公司 | Driving motor and electric automobile with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |
|
| CX01 | Expiry of patent term |