CN103762760A - Motor for rotary type compressor and rotary type compressor with motor - Google Patents
Motor for rotary type compressor and rotary type compressor with motor Download PDFInfo
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- CN103762760A CN103762760A CN201410007604.9A CN201410007604A CN103762760A CN 103762760 A CN103762760 A CN 103762760A CN 201410007604 A CN201410007604 A CN 201410007604A CN 103762760 A CN103762760 A CN 103762760A
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- punching
- rotary compressor
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Abstract
The invention discloses a motor for a rotary type compressor and the rotary type compressor with the motor. The motor for the rotary type compressor comprises a stator and a rotor, the rotor is arranged in the stator, the rotor comprises an iron core, the core iron is composed of a plurality of stamped sheets stacked up and down, the motor is provided with a plurality of magnetic poles, the connecting lines of the centers of the magnetic poles and the center of the stamped sheets are the central lines of the magnetic poles, the angular bisector of every two adjacent magnetic pole central lines are adjacent magnetic pole central lines, the included angle between every two adjacent magnetic pole central lines is 2alpha1, a first inward concave portion is formed in the peripheral circle of each stamped sheet, and the number of the first concave portions is equal to the integral multiple of the number of the magnetic poles. The radial electromagnetic force of the rotor of the motor is relatively small, the vibration noise of the motor is small, energy efficiency is high, and the motor is easy to manufacture and low in cost.
Description
Technical field
The present invention relates to living electric apparatus field, especially relate to a kind of motor for rotary compressor and there is the rotary compressor of this motor.
Background technology
From electromagnetic noise mechanism, the electromagnetic noise of motor is mainly because electromagnetic force is on stator, causes the distortion of stator generating period to form vibration and produce noise.Therefore the size that acts on the electromagnetic force of stator has played very large influence to motor oscillating noise.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.For this reason, the present invention need to provide a kind of motor for rotary compressor, and the radial electromagnetic force of the rotor of this motor is relatively little, and motor oscillating noise is little, and efficiency is high, and the manufacture of motor is simple, cost is low.
The present invention also needs to provide a kind of rotary compressor with this motor.
According to the motor of first aspect present invention embodiment, comprise: stator and rotor, described rotor is located in described stator, described rotor comprises iron core, described iron core consists of upper and lower stacked a plurality of punchings, described motor has a plurality of magnetic poles, described in each, the line at the center of pole center and described punching is pole center line, the angular bisector of adjacent two described pole center lines is adjacent pole center line, angle between adjacent two described pole center lines is 2 α 1, wherein described in each, on the periphery of punching circle, be formed with the first recess inwardly concaving, the number of described the first recess equals the integral multiple of described magnetic pole.
According to the motor of the embodiment of the present invention, by the first recess that to be provided with number of magnetic poles in the punching of rotor be integral multiple, thereby can make the radial electromagnetic force of the rotor of motor reduce, and then rotor reduces greatly to the radial electromagnetic force of stator, thereby can make the vibration noise of motor reduce, and can improve the efficiency of motor.Therefore and because the first recess is evenly distributed in punching, can make rotor when work, and rotate more steadily, further reduce noise, raising efficiency.And the first recess is formed in punching by the mode of integrated punching, can make like this formation of the first recess simpler, the manufacture of the punching of rotor is simpler, has reduced manufacturing process, has saved the cost of manufacturing.
In addition, according to motor of the present invention, also can there is following additional technical feature:
According to one embodiment of present invention, the number of described the first recess equals a times of described magnetic pole, the first recess corresponding phase the same side that is formed on every described adjacent pole center line respectively described in each.
According to one embodiment of present invention, the number of described the first recess equals the twice of described magnetic pole, and the both sides of every described adjacent pole center line are all formed with described the first recess.
According to one embodiment of present invention, the line from the solstics of corresponding described adjacent pole center line and the center of described punching on described the first recess, and the angle between corresponding described adjacent pole center line is α 2, wherein α 2 meets following relational expression, 0 < α 2 < α 1.
According to one embodiment of present invention, the line from the closest approach of corresponding described adjacent pole center line and the center of described punching on described the first recess, and the angle between corresponding described adjacent pole center line is α 3, wherein α 3 meets following relational expression, 0 < α 3 < α 2.
According to one embodiment of present invention, the radius of described punching is R, and the point on described the first recess is L1 from the beeline at the center of described punching, and wherein L1 meets following relational expression: 0 < L1 < R.
According to one embodiment of present invention, described in each, on the periphery of punching circle, be formed with the second recess inwardly concaving, the number of described the second recess equals the number of described magnetic pole.
According to one embodiment of present invention, the line from the solstics of corresponding described adjacent pole center line and the center of described punching on described the second recess, and the angle between corresponding described adjacent pole center line is α 4, wherein α 4 meets following relational expression, 0 < α 4 < α 3.
According to one embodiment of present invention, the radius of described punching is R, and the point on described the second recess is L2 from the beeline at the center of described punching, and wherein L2 meets following relational expression: 0 < L2 < R.
According to the rotary compressor of second aspect present invention embodiment, comprise according to the motor of first aspect present invention embodiment,
Therefore due to little according to the vibration noise of the motor of the embodiment of the present invention, efficiency is high, and low cost of manufacture, by the rotary compressor of this motor is set, thereby can have that noise is little, efficiency is high and the advantage such as low cost of manufacture.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to the structural representation of the rotary compressor of the embodiment of the present invention;
Fig. 2 is the vertical view of the motor of the rotary compressor shown in Fig. 1;
Fig. 3 is the vertical view of the punching of the motor described in Fig. 2;
Fig. 4 is the vertical view of the punching of motor in prior art;
Fig. 5 is the noise spectrum comparison diagram according to the rotary compressor of the embodiment of the present invention and rotary compressor of the prior art.
Description of reference numerals:
Stator 1;
The first recess 212; Closest approach a; Solstics b;
The second recess 213; Solstics c;
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, only 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 description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; 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 concrete condition understand above-mentioned term concrete meaning in the present invention.
Below with reference to Fig. 2 and Fig. 3, describe according to the motor 10 for rotary compressor of first aspect present invention embodiment.As shown in Figures 2 and 3, according to the motor 10 of the embodiment of the present invention, comprise stator 1 and rotor 2.It is interior and rotatable with respect to stator 1 that rotor 2 is located at stator 1, rotor 2 comprises iron core, and iron core consists of upper and lower stacked a plurality of punchings 21, is wound with coil on iron core, in each punching 21, be formed with a plurality of magnet that runs through its thickness and put hole 211, magnet is put hole 211 for accommodating magnet.Motor has a plurality of magnetic poles, and one of them magnetic pole can consist of a magnet, and certain magnetic pole also can be formed jointly by a plurality of magnets.The shape of magnet, size can be put with corresponding magnet the shape, measure-alike in hole 211, and magnet is arranged on magnet and puts in hole 211 certainly, and the size of magnet can also be less than the size that magnet is put hole 211.Wherein, the number of magnetic pole can be even number, and such as 2,4,6,8 etc., even number of poles is evenly distributed in punching 21.
The line at each pole center and punching 21 center is pole center line X1, as shown in Figure 3.The angular bisector of adjacent two pole center line X1 is adjacent pole center line X2, angle between adjacent two pole center line X1 is 2 α 1, that is to say, as shown in Figure 3, the angle between the pole center line X1 that each adjacent pole center line X2 is adjacent is α 1.The number that is wherein formed with the first recess 212, the first recesses 212 that inwardly concave (recessed towards punching 21 center) on the periphery of each punching 21 circle equals the integral multiple of magnetic pole.Wherein the mode of the first recess 212 by punching press is integrally formed in punching 21 and the first recess 212 is evenly distributed in punching 21.
According to the motor 10 of the embodiment of the present invention, by the first recess 212 that to be provided with number of magnetic poles in the punching 21 at rotor 2 be integral multiple, thereby can make the radial electromagnetic force of the rotor 2 of motor 10 reduce, and then the radial electromagnetic force of 2 pairs of stators 1 of rotor reduces greatly, thereby can make the vibration noise of motor 10 reduce, and can improve the efficiency of motor 10.Therefore and because the first recess 212 is evenly distributed in punching 21, can make rotor 2 when work, and rotate more steadily, further reduce noise, raising efficiency.And the first recess 212 is formed in punching 21 by the mode of integrated punching, can make like this formation of the first recess 212 simpler, the manufacture of the punching 21 of rotor 2 is simpler, has reduced manufacturing process, has saved the cost of manufacturing.
Wherein it should be noted that, the shape of the first recess 212 can be arbitrarily, and as shown in Figure 3, the first recess 212 can be arc to example.Alternatively, the first recess 212 can also consist of multistage straightway, or the first recess 212 can also consist of the combination of straightway and curved section.
In one embodiment of the invention, the number of the first recess 212 equals a times of magnetic pole, that is to say, the number of the first recess 212 equals the number of magnetic pole, each first recess 212 is corresponding phase the same side that is formed on every adjacent pole center line X2 respectively, for example each first recess 212 can be formed on a counterclockwise side of corresponding every adjacent pole center line X2, or each first recess 212 can be formed on a clockwise side of corresponding pole center line X1.Wherein a plurality of the first recesses 212, also for being uniformly distributed in punching 21, can guarantee the structural symmetry of rotor 2 like this, and then when rotor 2 is during in the interior rotation of stator 1, can guarantee the stability of rotor 2 rotations, reduce noise.
In another embodiment of the present invention, the number of the first recess 212 equals the twice of pole number, and the both sides of every adjacent pole center line X2 are all formed with the first recess 212.That is to say, a counterclockwise side and a clockwise side of every adjacent pole center line X2 are all formed with the first recess 212, as shown in Figure 3, between every two adjacent pole center line X2, are formed with two the first recesses 212.Wherein a plurality of the first recesses 212, also for being uniformly distributed in punching 21, can guarantee the structural symmetry of rotor 2 like this, and then when rotor 2 is during in the interior rotation of stator 1, can guarantee the stability of rotor 2 rotations, reduce noise.
In other embodiments of the invention, the number of the first recess 212 can also be other integral multiples of magnetic pole, such as three times, four times, five times etc. (scheming not shown).Wherein a plurality of the first recesses 212, with respect to punching 21 for being uniformly distributed, can guarantee the structural symmetry of rotor 2 like this, and then when rotor 2 is during in the interior rotation of stator 1, can guarantee the stability of rotor 2 rotations, reduce noise.
In examples more of the present invention, as shown in Figure 3, the line at the solstics b from corresponding adjacent pole center line X2 on the first recess 212 and punching 21 center, and the angle between corresponding adjacent pole center line X2 is α 2, wherein α 2 meets following relational expression, 0 < α 2 < α 1.Further, the line at the closest approach a from corresponding adjacent pole center line X2 on the first recess 212 and punching 21 center, and the angle between corresponding adjacent pole center line X2 is α 3, wherein α 3 meets following relational expression, 0 < α 3 < α 2.Wherein α 2 and α 3 can demonstrate the width of the first recess 212, and particularly, α 2 is larger and less explanation the first recess 212 of α 3 is wider, and α 2 is less and larger explanation the first recess 212 of α 3 is narrower.
As shown in Figure 3, in an example of the present invention, the radius of punching 21 is R, and the beeline from punching 21 center on the first recess 212 is L1, and wherein L1 meets following relational expression: 0 < L1 < R.Wherein L1 can demonstrate the degree of depth that the first recess 212 forms in punching 21, and particularly, the degree of depth of less the first recess 212 of L1 is larger.
In preferred embodiments more of the present invention, the number that can be formed with the second recess 213, the second recesses 213 that inwardly concave on the periphery of each punching 21 circle equals the number of magnetic pole.In other words, on the excircle of punching 21, the adjacent of two magnetic poles is provided with the second recess 213, as shown in Figure 3.
Motor of the prior art, because the area every magnetic bridge between adjacent pole is larger, can cause leakage field larger, like this efficiency of motor has also been caused to certain loss.According to the motor 10 of the embodiment of the present invention, by the second recess 213 is set between adjacent pole, thereby can make the area every magnetic bridge between adjacent pole reduce, thereby can make the leakage field between adjacent pole greatly reduce, and then improve the efficiency of motor 10.And by the second recess 213 is set, can also further reduce the size of radial electromagnetic force of the rotor 2 of motor 10, can further reduce like this vibration noise of motor 10.And the second recess 213 is formed in punching 21 by the mode of integrated punching, can make like this formation of the second recess 213 simpler, the manufacture of the punching 21 of rotor 2 is simpler, has reduced manufacturing process, has saved the cost of manufacturing.
Alternatively, the second recess 213 can be arc.Alternatively, the second recess 213 can also consist of multistage straightway, or the second recess 213 can also consist of the combination of straightway and curved section.Alternatively, the center line of each the second recess 213 can overlap with adjacent pole center line X2, can make like this formation of the second recess 213 simpler, easy to manufacture.Certainly the center line of each the second recess 213 can also not overlap with pole center line X2, and this can specifically arrange according to actual design calculation result.
As shown in Figure 3, the line at the solstics c from corresponding adjacent pole center line X2 on the second recess 213 and punching 21 center, and the angle between corresponding adjacent pole center line X2 is α 4, wherein α 4 meets following relational expression, 0 < α 4 < α 3.Wherein α 4 demonstrates the width of the second recess 213, and particularly, α 4 is larger, and the width of the second recess 213 is larger, and α 4 is less, and the width of the second recess 213 is less.
Alternatively, wherein the radius of punching 21 is R, and the point on the second recess 213 is L2 from the beeline at punching 21 center, and wherein L2 meets following relational expression: 0 < L2 < R.Wherein L2 can demonstrate the degree of depth that the second recess 213 forms in punching 21, and particularly, the degree of depth of less the second recess 213 of L2 is larger.
Below with reference to Fig. 1, describe according to the rotary compressor 100 of second aspect present invention embodiment, as shown in Figure 1, this rotary compressor 100 comprises the motor 10 according to first aspect present invention embodiment.Particularly, rotary compressor 100 has housing 20, compressing mechanism 40 and driving mechanism 30, driving mechanism 30 comprises above-mentioned motor 10 and by the bent axle 301 of these motor 10 driving rotations, compressing mechanism 40 comprises cylinder 401, is located at the piston in cylinder 401.
Therefore due to little according to the vibration noise of the motor 10 of the embodiment of the present invention, efficiency is high, and low cost of manufacture, by the rotary compressor 100 of this motor 10 is set, thereby can have that noise is little, efficiency is high and the advantage such as low cost of manufacture.Particularly, this rotary compressor 100 is frequency-changeable compressor.
Below with reference to Fig. 2, Fig. 3 and Fig. 5, describe according to a concrete example of the present invention.
Shown in Fig. 2, Fig. 3 is the motor 10 of a four utmost points, and magnetic pole is four, and magnet is put hole 211 and is also four.On the excircle of the punching 21 of rotor 2, on the both sides of adjacent pole center line X2, be all designed with the first recess 212, the first recess 212 is eight, the exradius R of the punching 21 of its rotor 2 is 30mm, pole center line X1 and adjacent pole center line X2 angle α 1 are 45 °, the size of the first recess 212 is determined by α 2, α 3 and L1, be specially: α 3=20 °, α 2=30 °, L1 is 28.5mm.While two magnetic pole adjacents are provided with the size of the second recess 213, the second recesses 213 to be determined by α 4 and L2, particularly, and α 4=5 °, L2=27mm.
By motor 10 and the compressor of above technical parameter design, with the rotary compressor for example, or not the first recess 212 and the second recess 213 and other parameters identical (punching 21 radius Rs are equal), by test comparison, find, the global noise value of the rotary compressor 100 after improvement reduces about 2dB, all there is obvious reduction in a plurality of frequency band noise levels, as shown in Figure 5, the efficiency of rotary compressor 100 improves approximately 1% simultaneously.
According to other configuration examples of the rotary compressor 100 of the embodiment of the present invention, if the concrete structure of compressing mechanism 40, driving mechanism 30 and connection each other etc. and operation are all known for those of ordinary skills, no longer describe in detail here.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " 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, the schematic statement of above-mentioned term is not necessarily referred to 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.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. for a motor for rotary compressor, it is characterized in that, comprising:
Stator and rotor, described rotor is located in described stator, described rotor comprises iron core, described iron core consists of upper and lower stacked a plurality of punchings, described motor has a plurality of magnetic poles, and described in each, the line at the center of pole center and described punching is pole center line, and the angular bisector of adjacent two described pole center lines is adjacent pole center line, angle between adjacent two described pole center lines is 2 α 1
Wherein described in each, on the periphery of punching circle, be formed with the first recess inwardly concaving, the number of described the first recess equals the integral multiple of described magnetic pole.
According to claim 1 for rotary compressor motor, it is characterized in that, the number of described the first recess equals a times of described magnetic pole, the first recess corresponding phase the same side that is formed on every described adjacent pole center line respectively described in each.
3. the motor for rotary compressor according to claim 1, is characterized in that, the number of described the first recess equals the twice of described magnetic pole, and the both sides of every described adjacent pole center line are all formed with described the first recess.
4. according to the motor for rotary compressor described in claim 2 or 3, it is characterized in that, the line from the solstics of corresponding described adjacent pole center line and the center of described punching on described the first recess, and the angle between corresponding described adjacent pole center line is α 2, wherein α 2 meets following relational expression, 0 < α 2 < α 1.
5. the motor for rotary compressor according to claim 4, it is characterized in that, the line from the closest approach of corresponding described adjacent pole center line and the center of described punching on described the first recess, and the angle between corresponding described adjacent pole center line is α 3, wherein α 3 meets following relational expression, 0 < α 3 < α 2.
6. according to the motor for rotary compressor described in claim 2 or 3, it is characterized in that, the radius of described punching is R, point on described the first recess is L1 from the beeline at the center of described punching, and wherein L1 meets following relational expression: 0 < L1 < R.
7. the motor for rotary compressor according to claim 5, is characterized in that, described in each, on the periphery of punching circle, is formed with the second recess inwardly concaving, and the number of described the second recess equals the number of described magnetic pole.
8. the motor for rotary compressor according to claim 7, it is characterized in that, the line from the solstics of corresponding described adjacent pole center line and the center of described punching on described the second recess, and the angle between corresponding described adjacent pole center line is α 4, wherein α 4 meets following relational expression, 0 < α 4 < α 3.
9. the motor for rotary compressor according to claim 7, it is characterized in that, the radius of described punching is R, point on described the second recess is L2 from the beeline at the center of described punching, and wherein L2 meets following relational expression: 0 < L2 < R.
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 |
|---|---|---|---|
| CN201410007604.9A CN103762760B (en) | 2014-01-07 | 2014-01-07 | For the motor of rotary compressor and have the rotary compressor of this motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007604.9A CN103762760B (en) | 2014-01-07 | 2014-01-07 | For the motor of rotary compressor and have the rotary compressor of this motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103762760A true CN103762760A (en) | 2014-04-30 |
| CN103762760B CN103762760B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410007604.9A Expired - Fee Related CN103762760B (en) | 2014-01-07 | 2014-01-07 | For the motor of rotary compressor and have the rotary compressor of this motor |
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| Country | Link |
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| CN (1) | CN103762760B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118100487A (en) * | 2024-04-22 | 2024-05-28 | 广东美芝制冷设备有限公司 | Rotor, motor and compressor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002325410A (en) * | 2001-04-27 | 2002-11-08 | Hitachi Ltd | Permanent magnet type dynamo-electric machine and compressor using the same |
| JP2008206308A (en) * | 2007-02-20 | 2008-09-04 | Toyota Industries Corp | Permanent-magnet rotating electric machine |
| JP2008220053A (en) * | 2007-03-05 | 2008-09-18 | Toyota Motor Corp | Motor |
| JP4900069B2 (en) * | 2007-06-13 | 2012-03-21 | トヨタ自動車株式会社 | Rotating electric machine |
| CN201319527Y (en) * | 2008-12-16 | 2009-09-30 | 珠海格力电器股份有限公司 | Motor rotor structure |
| JP5260563B2 (en) * | 2010-01-07 | 2013-08-14 | 株式会社日立製作所 | Permanent magnet generator or motor |
| JP2013162556A (en) * | 2012-02-01 | 2013-08-19 | Suzuki Motor Corp | Electric rotary machine |
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2014
- 2014-01-07 CN CN201410007604.9A patent/CN103762760B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118100487A (en) * | 2024-04-22 | 2024-05-28 | 广东美芝制冷设备有限公司 | Rotor, motor and compressor |
| CN118100487B (en) * | 2024-04-22 | 2024-07-09 | 广东美芝制冷设备有限公司 | Rotor, motor and compressor |
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| CN103762760B (en) | 2016-07-06 |
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Granted publication date: 20160706 Termination date: 20210107 |