CN103683567A - Motor for rotary compressor and rotary compressor provided with motor - Google Patents
Motor for rotary compressor and rotary compressor provided with motor Download PDFInfo
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- CN103683567A CN103683567A CN201310655800.2A CN201310655800A CN103683567A CN 103683567 A CN103683567 A CN 103683567A CN 201310655800 A CN201310655800 A CN 201310655800A CN 103683567 A CN103683567 A CN 103683567A
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- rotary compressor
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Abstract
The invention discloses a motor for a rotary compressor and the rotary compressor provided with the motor. The motor comprises a stator, wherein the stator comprises a stator core and a winding, the stator core comprises a tooth part and a yoke part, the winding is arranged on the tooth part, the width of the yoke part is W, the diameter of the outer circle of the stator is D, the yoke diameter ratio i=W/D, and 0.05<i<0.25. According to the motor for the rotary compressor, the yoke diameter ratio is controlled within an appropriate range by the reasonable design of the width of the yoke part of the stator and the diameter of the outer circle of the stator, and as a result, the radial vibration inherent frequency of the stator is controlled to be larger than major radial electromagnetic force frequency, so that the overall level of electromagnetic vibration noise is reduced, resonance caused by electromagnetic force is transferred to a high-frequency section, and then noise can be insulated greatly with soundproof cotton when the compressor is assembled on an air-conditioning system.
Description
Technical field
The present invention relates to a kind of motor for rotary compressor and there is the rotary compressor of this motor.
Background technology
Rotary compressor is widely used in the refrigeration plants such as air-conditioning, refrigerator, and rotary compressor comprises compressing mechanism and drive motors, and the crankshaft rotating of drive motors drive compression mechanism, to compress the refrigerant entering in cylinder.Rotary compressor is when operation, and its drive motors can produce very large noise, be provided with Sound-proof material, but soundproof effect is limited on existing rotary compressor, and drive motors operating noise is greatly that those skilled in the art thirsts for the technical problem solving always.
Summary of the invention
The application makes the cognition of the following fact and problem and discovery based on inventor:
Electromagnetic noise is mainly because radial electromagnetic force acts on diameter of stator bore, thereby causes the distortion of stator generating period to form vibration and radiated noise.Therefore radially natural frequency is more approaching for larger radial electromagnetic force frequency and stator, and electromagnetic vibration noise is larger.Inventor finds, larger electromagnetic force frequency belongs to medium and low frequency, and stator radially fixed frequency also belong to medium and low frequency, more radially natural frequency is approaching for electromagnetic force frequency and stator like this, thereby cause larger vibration noise, when particularly radially natural frequency is consistent or basically identical with stator in electromagnetic force frequency, will cause stator resonances.Therefore inventor finds, by improving the structure of stator, makes radially natural frequency increase of stator, thereby can improve vibrating noise.
The present invention is intended to solve at least to a certain extent one of above-mentioned technical problem of the prior art.
For this reason, one object of the present invention is to propose a kind of motor for rotary compressor, and this motor has improved stator structure, can improve electromagnetic noise.
Another object of the present invention is to propose a kind of rotary compressor, and this rotary compressor comprises above-mentioned motor.
According to the motor for rotary compressor of the embodiment of the present invention, comprise: stator, described stator comprises stator core and winding, described stator core comprises tooth portion and yoke portion, described winding is located in described tooth portion, and the width of wherein said yoke portion is W, and the outer diameter of a circle of stator of described stator is D, yoke footpath is than i=W/D, and i meets relational expression: 0.05 < i < 0.25.
According to the motor for rotary compressor of the embodiment of the present invention, by reasonable design stator yoke portion's width and stator outside diameter, make yoke footpath than being controlled in suitable scope, more than thereby stator radial vibration natural frequency can being controlled to larger radial electromagnetic force frequency, so just, can reduce the aggregate level of electromagnetic vibration noise, the resonance that electromagnetic force can be caused shifts toward high band simultaneously, so that when compressor is assemblied in air-conditioning system, can adopt Sound-proof material that noise is significantly intercepted.
In addition, according to the motor for rotary compressor of the embodiment of the present invention, can also there is following additional technical feature:
According to some embodiments of the present invention, described yoke footpath further meets relational expression than i: 0.07 < i < 0.25.Thus, can improve the electromagnetic noise of motor.
According to some embodiments of the present invention, described yoke footpath further meets relational expression than i: 0.09 < i < 0.25.Thus, can further improve the electromagnetic noise of motor.
According to some embodiments of the present invention, i=0.08 is compared in described yoke footpath.Thus, the electromagnetic noise of motor is less.
According to some embodiments of the present invention, between adjacent described tooth portion and described yoke portion, limit slot part, the cross section of described slot part is connected and forms successively by multistage line segment.
According to some embodiments of the present invention, between adjacent described tooth portion and described yoke portion, limit slot part, the cross section of described slot part is connected and forms successively by multistage curve.
According to some embodiments of the present invention, between adjacent described tooth portion and described yoke portion, limit slot part, the cross section of described slot part is connected and forms with at least one section of curve by least one section of line segment.
According to some embodiments of the present invention, between adjacent described tooth portion and described yoke portion, limit slot part, the quantity of described slot part is N, N is greater than zero natural number.
According to some embodiments of the present invention, described stator core is built up by a slice silicon steel punching at least.
According to the rotary compressor of the embodiment of the present invention, comprise according to the motor for rotary compressor in the above embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is according to the stereogram of the stator of the motor of the embodiment of the present invention;
Fig. 2 is the sectional view of stator core;
Fig. 3 is the electromagnetic force amplitude of the rotary six groove four pole compression machines of tradition and the schematic diagram of electromagnetic force frequency.
Reference numeral:
Stator core 1, winding 2;
Tooth portion 11, yoke portion 12, slot part 13, stator trimming groove 14.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
The application makes the cognition of the following fact and problem and discovery based on inventor: electromagnetic noise is mainly because radial electromagnetic force acts on stator 100 internal diameters, thereby causes stator 100 generating periods distortion to form vibration and radiated noise.Therefore radially natural frequency is more approaching for larger radial electromagnetic force frequency and stator 100, and electromagnetic vibration noise is larger.Inventor finds, larger electromagnetic force frequency belongs to medium and low frequency, and stator 100 radially fixed frequency also belong to medium and low frequency, radially natural frequency is approaching for electromagnetic force frequency and stator 100 like this, thereby cause larger vibration noise, when particularly radially natural frequency is consistent or basically identical with stator 100 in electromagnetic force frequency, will cause stator 100 resonance.On this basis, by improving the structure of stator 100, make radially natural frequency increase of stator 100, thereby can improve vibrating noise.
Below with reference to Fig. 1-Fig. 3, describe in detail according to the motor for rotary compressor of the embodiment of the present invention.
According to the rotary compressor of the embodiment of the present invention, comprise stator 100 and rotor, rotor is arranged on the inside of stator 100 rotationally.Stator 100 comprises stator core 1 and winding 2, and stator core 1 comprises a plurality of tooth portions 11 and yoke portion 12, and winding 2 is wrapped in tooth portion 11, and yoke portion 12 is for connecting a plurality of tooth portion 11.Between adjacent tooth portion 11 and yoke portion 12, limit slot part 13, wherein in the example of Fig. 2, by ab section, bc section, cd section, de section and the ef section space forming that is connected successively, be slot part 13.
Wherein, the width of yoke portion 12 is W, here, it should be noted that, the width W of yoke portion 12 be on the medial surface of the yoke portion part between adjacent two tooth portions 11 (being the cd section in Fig. 2 example) any point to the minimum range of stator cylindrical, as shown in Figure 2.
As shown in Figure 2, the outer diameter of a circle of the stator of stator 100 is D, here, it should be noted that, stator cylindrical refers to that to take the center of stator cylindrical be the center of circle, and by the formed circumscribed circle of any point on stator 100 outer peripheral faces maximum one.Usually, need to arrange stator trimming groove 14 on the outer peripheral face due to stator 100, so the outer peripheral face of stator 100 is on-circular face, now the stator cylindrical of stator 100 refers to the outer peripheral face of the stator 100 of not removing stator trimming groove 14.The width and the stator cylindrical that should be appreciated that yoke portion 12 are the general technical term in this area.
Because inventor finds, electromagnetic force frequency belong to medium and low frequency and stator 100 radially natural frequency also belong to medium and low frequency, therefore can, by improving the structure of stator 100, increase radially natural frequency of stator 100, thereby can effectively improve the vibrating noise of motor.
Inventor finds by industry experience and great many of experiments for many years, the natural frequency of stator 100 radial vibrations substantially with yoke footpath than linear, therefore, by increasing the yoke footpath ratio of stator 100, can improve the vibrating noise of motor.
In industry, generally to take motor speed when 5400 turn, to weigh the vibrating noise of stator 100, shown in Fig. 3, Fig. 3 shows the electromagnetic force frequency of existing rotary compressor and the schematic diagram of amplitude, as can be seen from Figure 3, the amplitude of the radial electromagnetic force that stator 100 is suffered (ordinate) is that the increase with frequency (abscissa) reduces, when the radial vibration natural frequency of stator 100 is lower as be about 1000Hz (the radial vibration natural frequency of motor stator 100 is generally 1000Hz left and right in the industry), stator 100 can resonate, produce larger noise, and near the noise of the left and right of 1000Hz is for people's ear, can clearly hear, in addition the Sound-proof material of compressor setting near 1000Hz frequency range and following noise almost do not have effective iris action, therefore at existing compressor during in operation, the vibrating noise of motor is very large.
Inventor finds by emulation experiment, the yoke footpath ratio of stator 100 is controlled at more than 0.05, just can make more than the radial vibration natural frequency of stator 100 brings up to 1100Hz, and can find out from the schematic diagram of Fig. 3, in the radially natural frequency of stator 100, be 1100Hz when above, the noise that motor produces is less.
For example, yoke footpath ratio is 0.08 o'clock, the radially natural frequency of stator 100 is about 1750Hz, and as can be seen from Figure 3, amplitude in 1750Hz place electromagnetic force is more much smaller than 1000Hz, and being about 1750Hz in the radially natural frequency of stator 100, the silencing cotton arranging on compressor can absorb vibrating noise well.
Consideration for factors such as the overall dimensions of motor and costs, yoke footpath ratio preferably has a higher limit, and this higher limit is preferably 0.25, in other words, according to some embodiments of the present invention, yoke footpath meets relational expression than i=W/D: 0.05 < i < 0.25.
Thus, according to the motor for rotary compressor of the embodiment of the present invention, by reasonable design stator 100 yoke portion 12 width and stator outside diameters, make yoke footpath than being controlled in suitable scope, more than thereby stator 100 radial vibration natural frequencys can being controlled to larger radial electromagnetic force frequency, so just, can reduce the aggregate level of electromagnetic vibration noise, the resonance that electromagnetic force can be caused shifts toward high band simultaneously, so that when compressor is assemblied in air-conditioning system, can adopt Sound-proof material that noise is significantly intercepted.
Need explanation a bit, in industry, it is the power from circle is pointed in the center of circle perpendicular to electrical axis, while action direction that the above-mentioned radial electromagnetic force that acts on stator 100 internal diameters refers in stator 100 and the interactional electromagnetic force of rotor, and when said stator 100 radial vibration natural frequencys refer to stator 100 vibration, the distortion of stator 100 only occurs in the plane perpendicular to axis.
According to a further embodiment of the invention, yoke footpath further meets relational expression than i: 0.07 < i < 0.25.Thus, can further improve the vibrating noise of motor.
According to further embodiment of the present invention, yoke footpath further meets relational expression than i: 0.09 < i < 0.25.Thus, can improve better the vibrating noise of motor.
According to a preferred embodiment of the present invention, yoke footpath gets 0.08 than i.Thus motor radially natural frequency and radial electromagnetic force frequency phase-difference larger, electric and magnetic oscillation is less, can reduce well the operating noise of motor.
Shown in Fig. 3, according to some embodiments of the present invention, between adjacent tooth portion 11 and yoke portion 12, limit slot part 13, slot part 13 can be used for cabling, holds copper cash, and the cross section of slot part 13 is connected and forms successively by multistage line segment.
But the present invention is not limited to this, at other embodiment of invention, the cross section of slot part 13 can be connected successively by multistage curve.
Or according to still a further embodiment, as shown in Figure 2, the cross section of slot part 13 is connected and is formed by least one section of line segment and (or) at least one section of curve.For example, in the example of Fig. 2, it is ab section, bc section and de section and ef section that line segment is four sections, and it is cd section that curve is one section,
According to some embodiments of the present invention, the quantity of slot part 13 is N, and N is greater than zero natural number, and in other words, N is positive integer.For example, in the example of Fig. 1 and Fig. 2, stator 100 has six tooth portions 11 and six slot parts 13, and still, the present invention is not limited to this.
According to some embodiments of the present invention, stator core 1 is built up by a slice silicon steel punching at least.Thus, simple in structure, easily manufactured.But the present invention is not limited to this.
Below simply describe according to the rotary compressor of the embodiment of the present invention.
According to the rotary compressor of the embodiment of the present invention, can comprise housing, the motor of describing in above-described embodiment, compressing mechanism etc., compressing mechanism can be single cylinder structure, it can certainly be double-cylinder structure, take single cylinder compressor structure as example, compressing mechanism can comprise cylinder, be located at the base bearing above cylinder, be located at the supplementary bearing below cylinder, bent axle runs through base bearing, cylinder and supplementary bearing and supported by base bearing and supplementary bearing, on bent axle, be provided with eccentric part, eccentric part is arranged with piston outward, piston is positioned at cylinder, in cylinder, be also provided with vane slot and be located at movably the slide plate in vane slot, the tip of slide plate extend in cylinder and is resisted against on the outer peripheral face of piston.Rotor and bent axle are fixed, for the central axis rotation of driving crank flexing axle, so that the refrigerant entering in cylinder is compressed.
Should be appreciated that above-mentioned compressing mechanism etc. has been all prior art, and can adopt and structure identical or close in prior art, other parts of therefore removing outside motor for compressor here are not made particular determination.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.In addition, those skilled in the art can engage the different embodiment that describe in this specification or example and combine.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (10)
1. for a motor for rotary compressor, it is characterized in that, comprising:
Stator, described stator comprises stator core and winding, described stator core comprises tooth portion and yoke portion, described winding is located in described tooth portion, the width of wherein said yoke portion is W, the outer diameter of a circle of stator of described stator is D, and yoke footpath is than i=W/D, and i meets relational expression: 0.05 < i < 0.25.
2. the motor for rotary compressor according to claim 1, is characterized in that, described yoke footpath further meets relational expression than i: 0.07 < i < 0.25.
3. the motor for rotary compressor according to claim 2, is characterized in that, described yoke footpath further meets relational expression than i: 0.09 < i < 0.25.
4. the motor for rotary compressor according to claim 1, is characterized in that, i=0.08 is compared in described yoke footpath.
5. the motor for rotary compressor according to claim 1, is characterized in that, between adjacent described tooth portion and described yoke portion, limits slot part, and the cross section of described slot part is connected and forms successively by multistage line segment.
6. the motor for rotary compressor according to claim 1, is characterized in that, between adjacent described tooth portion and described yoke portion, limits slot part, and the cross section of described slot part is connected and forms successively by multistage curve.
7. the motor for rotary compressor according to claim 1, is characterized in that, between adjacent described tooth portion and described yoke portion, limits slot part, and the cross section of described slot part is connected and forms with at least one section of curve by least one section of line segment.
8. the motor for rotary compressor according to claim 1, is characterized in that, between adjacent described tooth portion and described yoke portion, limits slot part, and the quantity of described slot part is N, and N is greater than zero natural number.
9. the motor for rotary compressor according to claim 1, is characterized in that, described stator core is built up by a slice silicon steel punching at least.
10. a rotary compressor, is characterized in that, comprises according to the motor for rotary compressor described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655800.2A CN103683567A (en) | 2013-12-05 | 2013-12-05 | Motor for rotary compressor and rotary compressor provided with motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655800.2A CN103683567A (en) | 2013-12-05 | 2013-12-05 | Motor for rotary compressor and rotary compressor provided with motor |
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| Publication Number | Publication Date |
|---|---|
| CN103683567A true CN103683567A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310655800.2A Pending CN103683567A (en) | 2013-12-05 | 2013-12-05 | Motor for rotary compressor and rotary compressor provided with motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681856A (en) * | 2017-11-13 | 2018-02-09 | 安徽美芝精密制造有限公司 | Motor and there is its compressor and refrigeration plant |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1863148A2 (en) * | 2006-05-29 | 2007-12-05 | Jtekt Corporation | Brushless motor and electric power steering system |
| CN201639375U (en) * | 2010-03-25 | 2010-11-17 | 中山大洋电机制造有限公司 | Stator lamination of motor |
| CN202513794U (en) * | 2012-03-20 | 2012-10-31 | 高金云 | Stator/rotor punching sheets of single-phase series excited machine |
| CN203056709U (en) * | 2012-12-20 | 2013-07-10 | 高金云 | Single-phase series motor stator punching sheet |
| CN203617795U (en) * | 2013-12-05 | 2014-05-28 | 广东美芝制冷设备有限公司 | Motor for rotary compressor and rotary compressor comprising same |
-
2013
- 2013-12-05 CN CN201310655800.2A patent/CN103683567A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1863148A2 (en) * | 2006-05-29 | 2007-12-05 | Jtekt Corporation | Brushless motor and electric power steering system |
| CN201639375U (en) * | 2010-03-25 | 2010-11-17 | 中山大洋电机制造有限公司 | Stator lamination of motor |
| CN202513794U (en) * | 2012-03-20 | 2012-10-31 | 高金云 | Stator/rotor punching sheets of single-phase series excited machine |
| CN203056709U (en) * | 2012-12-20 | 2013-07-10 | 高金云 | Single-phase series motor stator punching sheet |
| CN203617795U (en) * | 2013-12-05 | 2014-05-28 | 广东美芝制冷设备有限公司 | Motor for rotary compressor and rotary compressor comprising same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681856A (en) * | 2017-11-13 | 2018-02-09 | 安徽美芝精密制造有限公司 | Motor and there is its compressor and refrigeration plant |
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Application publication date: 20140326 |
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