CN103746473A - Motor for compressor and compressor with motor - Google Patents
Motor for compressor and compressor with motor Download PDFInfo
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- CN103746473A CN103746473A CN201410015300.7A CN201410015300A CN103746473A CN 103746473 A CN103746473 A CN 103746473A CN 201410015300 A CN201410015300 A CN 201410015300A CN 103746473 A CN103746473 A CN 103746473A
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Abstract
The invention discloses a motor for a compressor and the compressor with the motor. The motor comprises a stator and a rotor, wherein the stator comprises a stator core; the stator core comprises tooth parts and a yoke part; a slot part is defined between any two adjacent tooth parts; an auxiliary slot is formed in the middle part of the inner lateral surface of each tooth part; the rotor is arranged on the inner side of the stator. According to the motor for the compressor, the order where air-gap flux density harmonics appear can be reduced, so that radial magnetic pull to the stator is reduced, and the electromagnetic noise of the motor is improved.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of motor for compressor and there is the 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, 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 discovery of the following fact and problem and understanding based on inventor: in some motors, a plurality of (two or more) auxiliary tank can be set on the medial surface of the tooth portion of stator, the effect of auxiliary tank is to weaken cogging torque, thereby reduce the torque ripple of motor, but inventor's discovery, the torque ripple that cogging torque brings is not the main source of electromagnetic noise.After the industry experience of inventor based on for many years and large quantity research, be surprised to find: the middle part by the medial surface in each tooth portion only arranges an auxiliary tank, thereby can change the distribution of non-load air gap field, reach the object that reduces Gas-gap Magnetic Field Resonance Wave density, thereby improved the electromagnetic noise of motor.
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 compressor, and this motor has improved stator structure, thus the electromagnetic noise in the time of can reducing motor operation.
Another object of the present invention is to propose a kind of compressor, and this compressor comprises the above-mentioned motor for compressor, thereby electromagnetic noise is lower during this compressor operating.
According to the motor for compressor of the embodiment of the present invention, comprise: stator, described stator comprises stator core, described stator core comprises tooth portion and yoke portion, wherein between two of arbitrary neighborhood described tooth portions, limit slot part, described in each, the center of the medial surface of tooth portion is provided with an auxiliary tank; And rotor, described rotor is located at the inner side of described stator.
The order that can lower the harmonic wave appearance of unloaded air gap flux density according to the motor for compressor of the embodiment of the present invention, reduces the suffered radially magnetic pull of stator thereby reach, and has improved the electromagnetic noise of motor.
In addition, according to the motor for compressor of the embodiment of the present invention, can also there is following additional technical feature:
According to some embodiments of the present invention, the width of the notch of described slot part is d1, and the width of the notch of described auxiliary tank is d2, wherein 0.7d1≤d2≤1.3d1.Thus, can lower well Gas-gap Magnetic Field Resonance Wave density, realize the object of improving motor electromagnetic noise.
According to some embodiments of the present invention, 0.9d1≤d2≤1.1d1.Thus, can further lower Gas-gap Magnetic Field Resonance Wave density, realize the object of improving motor electromagnetic noise.
According to some embodiments of the present invention, d1=d2.Thus, air-gap field positive-negative half-cycle full symmetric, and then greatly eliminated even harmonics, and further lowered Gas-gap Magnetic Field Resonance Wave density, reduce to greatest extent the electromagnetic noise of motor.
According to some embodiments of the present invention, the width of the pole shoe of described stator is h1, and the degree of depth of described auxiliary tank is h2, wherein 0.3h1≤h2≤h1.
According to some embodiments of the present invention, described auxiliary tank is rectangle or circular arc.
According to some embodiments of the present invention, described rotor comprises:
Rotor core, is provided with a plurality of standing grooves in described rotor core;
A plurality of permanent magnets, described a plurality of permanent magnets are located at respectively in described a plurality of standing groove correspondingly.
According to some embodiments of the present invention, the quantity of described tooth portion is 3:2 with the ratio of the quantity of described permanent magnet.
According to some embodiments of the present invention, described stator core is built up by multi-disc silicon steel punching.
According to the compressor of the embodiment of the present invention, comprise according to the motor for compressor in the above embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of motor according to an embodiment of the invention;
Fig. 2 is the schematic diagram of the stator core of the motor shown in Fig. 1;
Fig. 3 is the schematic diagram of motor in accordance with another embodiment of the present invention;
Fig. 4 is according to the schematic diagram of the compressor of the embodiment of the present invention.
Reference numeral:
Stator core 1, yoke portion 11, tooth portion 12, auxiliary tank 121, the medial surface 122 of tooth portion, slot part 13;
Rotor 2, rotor core 21, permanent magnet 22;
Compressor 1000, motor 100, housing 200, base bearing 310, cylinder 320, supplementary bearing 330, bent axle 340, eccentric part 3410, piston 350, main muffler 360.
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 discovery of the following fact and problem and understanding based on inventor: in some motors, a plurality of (two or more) auxiliary tank can be set on the medial surface of the tooth portion of stator, the effect of auxiliary tank is to weaken cogging torque, thereby reduce the torque ripple of motor, but inventor's discovery, the torque ripple that cogging torque brings is not the main source of electromagnetic noise.
After the industry experience of inventor based on for many years and large quantity research, be surprised to find: the middle part by the medial surface in each tooth portion only arranges an auxiliary tank, thereby can change the distribution of non-load air gap field, reach the object that reduces Gas-gap Magnetic Field Resonance Wave density, thereby improved the electromagnetic noise of motor.
Below with reference to Fig. 1-Fig. 4, describe in detail according to the motor 100 for compressor 1000 of the embodiment of the present invention, this motor 100 can comprise stator and rotor 2.
Particularly, as shown in Figure 1, stator comprises stator core 1 and stator winding (scheming not shown), stator core 1 can comprise yoke portion 11 and a plurality of tooth portion 12, a plurality of tooth portion 12 is along circumferentially uniform, and stator winding can be wrapped in tooth portion 12, and yoke portion 11 is for connecting a plurality of tooth portion 12.Wherein between the tooth portion 12 of arbitrary neighborhood, limit slot part 13, slot part 13 is for holding stator winding.Alternatively, stator core 1 can be built up by multi-disc silicon steel punching, but is not limited to this.
Wherein, as shown in Figure 2, the medial surface of all teeth of the medial surface 122(portion 12 of each tooth portion 12 122 forms stator inner circles) center be provided with an auxiliary tank 121.In other words, an auxiliary tank 121 is only set in each tooth portion 12, this auxiliary tank 121 is positioned at the central position of each tooth portion 12.Thus, the slot number that has changed motor 100 is counted matching relationship, thereby changed non-load air gap field distribution, make air-gap field positive-negative half-cycle almost symmetry or full symmetric, and then eliminated even harmonics, reach the object that lowers Gas-gap Magnetic Field Resonance Wave density, greatly improved the electromagnetic noise of motor 100.
As shown in Figure 1, rotor 2 is located at the inner side of stator, and according to one embodiment of present invention, rotor 2 comprises rotor core 21 and a plurality of permanent magnet 22, in rotor core 21, be provided with a plurality of standing grooves, a plurality of permanent magnets 22 are located in a plurality of standing grooves respectively correspondingly.Further, shown in Fig. 1, the quantity of tooth portion 12 is nine, and the quantity of permanent magnet 22 is six, so the quantity of tooth portion 12 is 3:2 with the ratio of the quantity of permanent magnet 22.But, should be appreciated that the present invention is not limited to this.
Thus, according to the motor 100 for compressor 1000 of the embodiment of the present invention, can lower the order of the harmonic wave appearance of unloaded air gap flux density, thereby reach, reduce the suffered radially magnetic pull of stator, improve the electromagnetic noise of motor 100.
Shown in Fig. 2, the width of the notch of slot part 13 is d1, and the width of the notch of auxiliary tank 121 is d2, and wherein d1 and d2 meet relational expression: 0.7d1≤d2≤1.3d1.Thus, can lower well Gas-gap Magnetic Field Resonance Wave density, realize the object of improving motor 100 electromagnetic noises.According to a further embodiment of the invention, d1 and d2 meet relational expression: 0.9d1≤d2≤1.1d1.Thus, can further lower Gas-gap Magnetic Field Resonance Wave density, realize the object of improving motor 100 electromagnetic noises.Preferably, d1=d2.Thus, air-gap field positive-negative half-cycle full symmetric, and then greatly eliminated even harmonics, and further lowered Gas-gap Magnetic Field Resonance Wave density, reduce to greatest extent the electromagnetic noise of motor 100.
According to preferred embodiments more of the present invention, as shown in Figure 2, the width of the pole shoe of stator is h1, and the degree of depth of auxiliary tank 121 is h2, and wherein h1 and h2 meet relational expression: 0.3h1≤h2≤h1.Should be understood that, for a person skilled in the art, can according to the structure of different motors 100, set flexibly the ratio of h1 and h2, as long as meet 0.3h1≤h2≤h1, thereby can improve the electromagnetic noise of motor 100.
According to one embodiment of present invention, auxiliary tank 121 can be rectangle, as depicted in figs. 1 and 2.But the present invention is not limited to this, in another embodiment of the present invention, as shown in Figure 3, auxiliary tank 121 can be also circular arc.Should be appreciated that auxiliary tank 121 also can form other shape, such as U-shaped, V-arrangement, half elliptic etc.
Below with reference to Fig. 4, simply describe according to the compressor 1000 of the embodiment of the present invention, this compressor 1000 is rotary compressor 1000.
As shown in Figure 4, according to the compressor 1000 of the embodiment of the present invention, can comprise housing 200, compressing mechanism and drive motors 100.According to one embodiment of present invention, housing 200 can comprise main casing, upper shell and lower house, main casing can form all unlimited ring-types of top and bottom, upper shell be located at main casing above, upper shell and main casing can be integrally welded, lower house be located at main casing below, lower house and main casing can be integrally welded, upper shell, main casing and lower house are encircled into an airtight installation cavity, and wherein the main member of rotary compressor 1000 is all arranged at this installation cavity inside as compressing mechanism, drive motors 100 etc.But, should be understood that, according to the structure of the housing 200 of the embodiment of the present invention, be not limited to this.
Compressing mechanism is located in housing 200, and as shown in Figure 4, compressing mechanism can comprise base bearing 310, cylinder 320, supplementary bearing 330, bent axle 340, piston 350 and slide plate.Wherein, base bearing 310 be located at cylinder 320 above, supplementary bearing 330 be located at cylinder 320 below, base bearing 310, cylinder 320, supplementary bearing 330 can be by a plurality of bolted.Base bearing 310 is provided with main muffler 360, noise when this main muffler 360 can improve compressor 1000 work.
Wherein, between base bearing 310, cylinder 320 and supplementary bearing 330 threes, limit compression chamber, compression chamber has air entry and exhaust outlet.Air entry and exhaust outlet lay respectively at the both sides of slide plate, particularly, air entry can be positioned at the downstream of slide plate in the direction of rotation of bent axle 340, exhaust outlet can be positioned at the downstream of air entry in the direction of rotation of bent axle 340, and the distance of exhaust outlet and slide plate is preferably less than the distance of air entry and slide plate.Air entry place can not arrange inlet valve, and exhaust ports can be provided with vent valve and be used to open or close exhaust outlet.
Bent axle 340 runs through base bearing 310, compression chamber and supplementary bearing 330, and bent axle 340 is by base bearing 310 and supplementary bearing 330 supportings, and particularly, base bearing 310 can be used for the middle and lower part of supporting crankshaft 340, and supplementary bearing 330 can be used for the bottom of supporting crankshaft 340.The lower end of bent axle 340 can extend in the lubricating oil sump of housing 200 inner bottom parts, in bent axle 340, can be formed with center oilhole, the bottom of center oilhole communicates with oil sump, in the oilhole of center, can be provided with oily blade to increase the effect that oils, the lubricating oil that center oilhole sucts can be used for that lubricating spindle holds 310, piston 350 and supplementary bearing 330 etc. are located, wearing and tearing while reducing these component workings, the life-span of improving compressor 1000.
As shown in Figure 4, on bent axle 340, there is eccentric part 3410, piston 350 is set on the eccentric part 3410 of bent axle 340 and can synchronously rotates with bent axle 340, piston 350 can be annular, the lower surface of base bearing 310 can be close in the upper surface of piston 350, the upper surface of supplementary bearing 330 can be close in the lower surface of piston 350, and the outer peripheral face of piston 350 can slide on the inner peripheral surface of cylinder 320, and piston 350 is for compressing the refrigerant entering in compression chamber.
Owing to being arranged with prejudicially the cause of piston 350 on bent axle 340, therefore offset that can be when balance weight being set coming balance crankshaft 340 to rotate, improve the phenomenon that perturbs of bent axle 340, this balance weight can be arranged on the rotor 2 of drive motors 100, but is not limited to this.
In cylinder 320, be formed with vane slot, wherein slide plate is located in vane slot movably, the tip of slide plate extend in compression chamber and is only against on the outer peripheral face of piston 350, here, it should be noted that one end that the tip of slide plate refers to that slide plate extend in compression chamber and joins with the outer peripheral face laminating of piston 350.
Top at compressing mechanism, can be provided with drive motors 100, drive motors 100 can comprise stator and rotor 2, stator can be fixed on housing 200 for example on the internal face of main casing, rotor 2 is located at the inner side of stator rotationally, thereby rotor 2 is fixed the central axis rotation with dynamic crankshaft 340 flexing axles 340 with the top of bent axle 340.The binding post of drive motors 100 can be arranged on the top of drive motors 100, and binding post can be protruding to be suitable for connecting power supply through upper shell.Wherein, this drive motors 100 can be the motor 100 for compressor 1000 of describing in above-mentioned arbitrary embodiment.
According to the compressor 1000 of the embodiment of the present invention, owing to being provided with the cause of above-mentioned motor 100, therefore when operation, electromagnetic noise is lower.
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 compressor, it is characterized in that, comprising:
Stator, described stator comprises stator core, and described stator core comprises tooth portion and yoke portion, wherein between two of arbitrary neighborhood described tooth portions, limits slot part, and described in each, the center of the medial surface of tooth portion is provided with an auxiliary tank; And
Rotor, described rotor is located at the inner side of described stator.
2. the motor for compressor according to claim 1, is characterized in that, the width of the notch of described slot part is d1, and the width of the notch of described auxiliary tank is d2, wherein 0.7d1≤d2≤1.3d1.
3. the motor for compressor according to claim 2, is characterized in that 0.9d1≤d2≤1.1d1.
4. the motor for compressor according to claim 3, is characterized in that d1=d2.
5. according to the motor for compressor described in any one in claim 1-4, it is characterized in that, the width of the pole shoe of described stator is h1, and the degree of depth of described auxiliary tank is h2, wherein 0.3h1≤h2≤h1.
6. the motor for compressor according to claim 1, is characterized in that, described auxiliary tank is rectangle or circular arc.
7. the motor for compressor according to claim 1, is characterized in that, described rotor comprises:
Rotor core, is provided with a plurality of standing grooves in described rotor core;
A plurality of permanent magnets, described a plurality of permanent magnets are located at respectively in described a plurality of standing groove correspondingly.
8. the motor for compressor according to claim 7, is characterized in that, the quantity of described tooth portion is 3:2 with the ratio of the quantity of described permanent magnet.
9. the motor for compressor according to claim 1, is characterized in that, described stator core is built up by multi-disc silicon steel punching.
10. a compressor, is characterized in that, comprises according to the motor for compressor described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410015300.7A CN103746473A (en) | 2014-01-13 | 2014-01-13 | Motor for compressor and compressor with motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410015300.7A CN103746473A (en) | 2014-01-13 | 2014-01-13 | Motor for compressor and compressor with motor |
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| CN103746473A true CN103746473A (en) | 2014-04-23 |
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| CN201410015300.7A Pending CN103746473A (en) | 2014-01-13 | 2014-01-13 | Motor for compressor and compressor with motor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467346A (en) * | 2014-10-24 | 2015-03-25 | 倪有源 | Method for weakening permanent magnet stepping motor cogging torque |
| CN106253507A (en) * | 2016-08-23 | 2016-12-21 | 广东威灵电机制造有限公司 | Single direction rotation motor and the stator for single direction rotation motor |
| CN107147222A (en) * | 2017-05-26 | 2017-09-08 | 东莞市川恩智能装备有限公司 | A kind of split type linear electric motors iron core |
| CN108512320A (en) * | 2018-05-30 | 2018-09-07 | 广东威灵电机制造有限公司 | Stator core and electric rotating machine |
| CN109643915A (en) * | 2016-09-05 | 2019-04-16 | Lg伊诺特有限公司 | Stator and motor including stator |
| CN109713814A (en) * | 2019-02-19 | 2019-05-03 | 珠海格力电器股份有限公司 | Electric machine structure and motor |
| CN109768632A (en) * | 2018-12-30 | 2019-05-17 | 上海朴渡信息科技有限公司 | A kind of novel low noise compressor stator core structure |
| TWI672891B (en) * | 2017-04-05 | 2019-09-21 | 日商三菱電機股份有限公司 | Stator core sheet and rotary electric machine |
| CN111033946A (en) * | 2017-08-28 | 2020-04-17 | Lg伊诺特有限公司 | Stator and motor including the same |
| CN111293799A (en) * | 2020-02-27 | 2020-06-16 | 南京奥特佳新能源科技有限公司 | Permanent magnet motor with optimized back electromotive force sine waveform and stator thereof |
| CN111555482A (en) * | 2020-05-29 | 2020-08-18 | 重庆长安新能源汽车科技有限公司 | Permanent magnet type rotating motor |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467346A (en) * | 2014-10-24 | 2015-03-25 | 倪有源 | Method for weakening permanent magnet stepping motor cogging torque |
| CN106253507A (en) * | 2016-08-23 | 2016-12-21 | 广东威灵电机制造有限公司 | Single direction rotation motor and the stator for single direction rotation motor |
| CN106253507B (en) * | 2016-08-23 | 2019-02-05 | 广东威灵电机制造有限公司 | Single direction rotation motor and stator for single direction rotation motor |
| CN109643915A (en) * | 2016-09-05 | 2019-04-16 | Lg伊诺特有限公司 | Stator and motor including stator |
| TWI672891B (en) * | 2017-04-05 | 2019-09-21 | 日商三菱電機股份有限公司 | Stator core sheet and rotary electric machine |
| CN107147222A (en) * | 2017-05-26 | 2017-09-08 | 东莞市川恩智能装备有限公司 | A kind of split type linear electric motors iron core |
| CN111033946B (en) * | 2017-08-28 | 2022-09-13 | Lg伊诺特有限公司 | Stator and motor including the same |
| CN111033946A (en) * | 2017-08-28 | 2020-04-17 | Lg伊诺特有限公司 | Stator and motor including the same |
| CN108512320A (en) * | 2018-05-30 | 2018-09-07 | 广东威灵电机制造有限公司 | Stator core and electric rotating machine |
| CN109768632A (en) * | 2018-12-30 | 2019-05-17 | 上海朴渡信息科技有限公司 | A kind of novel low noise compressor stator core structure |
| CN109768632B (en) * | 2018-12-30 | 2021-05-07 | 上海朴渡信息科技有限公司 | Low-noise compressor stator core structure |
| CN109713814B (en) * | 2019-02-19 | 2020-05-19 | 珠海格力电器股份有限公司 | Motor structure and motor |
| CN109713814A (en) * | 2019-02-19 | 2019-05-03 | 珠海格力电器股份有限公司 | Electric machine structure and motor |
| CN111293799A (en) * | 2020-02-27 | 2020-06-16 | 南京奥特佳新能源科技有限公司 | Permanent magnet motor with optimized back electromotive force sine waveform and stator thereof |
| CN111555482A (en) * | 2020-05-29 | 2020-08-18 | 重庆长安新能源汽车科技有限公司 | Permanent magnet type rotating motor |
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Application publication date: 20140423 |