CN103762760B - For the motor of rotary compressor and have the rotary compressor of this motor - Google Patents
For the motor of rotary compressor and have the rotary compressor of this motor Download PDFInfo
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- CN103762760B CN103762760B CN201410007604.9A CN201410007604A CN103762760B CN 103762760 B CN103762760 B CN 103762760B CN 201410007604 A CN201410007604 A CN 201410007604A CN 103762760 B CN103762760 B CN 103762760B
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- recess
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- punching
- rotary compressor
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Abstract
The invention discloses a kind of motor for rotary compressor and there is the rotary compressor of this motor, the described motor for rotary compressor includes: stator and rotor, described rotor is located in described stator, described rotor includes ferrum core, described iron core is made up of multiple punchings stacked up and down, described motor has multiple magnetic pole, the line at the center of each described pole center and described punching is pole center line, the angular bisector of adjacent two described pole center lines is adjacent pole centrage, angle between adjacent two described pole center lines is 2 α 1, wherein the periphery circle of each described punching is formed with the first recess inwardly concaved, the number of described first recess is equal to the integral multiple of described magnetic pole.The radial electromagnetic force of the rotor of motor according to embodiments of the present invention is relatively small, and motor oscillating noise is little, and efficiency is high, and the manufacture of motor is simple, cost is low.
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
By electromagnetic noise mechanism it can be seen that the electromagnetic noise of motor mainly due to electromagnetic force on stator, cause stator generating period deformation formed vibration and produce noise.Motor oscillating noise is served very big influence by the size of the electromagnetic force therefore acting on stator.
Summary of the invention
It is contemplated that at least solve one of technical problem of existence in prior art.For this, the present invention needs to provide a kind of motor for rotary compressor, and the radial electromagnetic force of the rotor of this motor is relatively small, and motor oscillating noise is little, and efficiency is high, and the manufacture of motor is simple, cost is low.
The present invention it is also required to provide a kind of rotary compressor with this motor.
The motor of embodiment according to a first aspect of the present invention, including: stator and rotor, described rotor is located in described stator, described rotor includes ferrum core, described iron core is made up of multiple punchings stacked up and down, described motor has multiple magnetic pole, the line at the center of each described pole center and described punching is pole center line, the angular bisector of adjacent two described pole center lines is adjacent pole centrage, angle between adjacent two described pole center lines is 2 α 1, wherein the periphery circle of each described punching is formed with the first recess inwardly concaved, the number of described first recess is equal to the integral multiple of described magnetic pole.
Motor according to embodiments of the present invention, by the first recess being provided with in the punching of rotor with number of magnetic poles is integral multiple, such that it is able to make the radial electromagnetic force of the rotor of motor reduce, and then the radial electromagnetic force of stator is greatly reduced by rotor, such that it is able to make the vibration noise of motor reduce, and the efficiency of motor can be improved.And owing to the first recess is evenly distributed in punching, therefore rotor can be made operationally, rotate more steady, reduce noise further, improve efficiency.And, the first recess is formed in punching by the mode of integrated punching, and the formation that so can make the first recess is simpler, and the manufacture of the punching of rotor is simpler, reduces manufacturing process, saves the cost of manufacture.
It addition, the motor according to the present invention also can have following additional technical feature:
According to one embodiment of present invention, the number of described first recess is equal to one times of described magnetic pole, and each described first recess is correspondingly formed phase the same side of adjacent pole centrage every described respectively.
According to one embodiment of present invention, the number of described first recess is equal to the twice of described magnetic pole, and the both sides of every described adjacent pole centrage are each formed with described first recess.
According to one embodiment of present invention, the solstics from corresponding described adjacent pole centrage on described first recess and the line at the center of described punching, it is α 2 with the angle between corresponding described adjacent pole centrage, wherein α 2 meets following relational expression, 0 < α 2 < α 1.
According to one embodiment of present invention, the closest approach from corresponding described adjacent pole centrage on described first recess and the line at the center of described punching, it is α 3 with the angle between corresponding described adjacent pole centrage, 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 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, the periphery circle of each described punching being formed with the second recess inwardly concaved, the number of described second recess is equal to the number of described magnetic pole.
According to one embodiment of present invention, the solstics from corresponding described adjacent pole centrage on described second recess and the line at the center of described punching, it is α 4 with the angle between corresponding described adjacent pole centrage, 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 second recess is L2 from the beeline at the center of described punching, and wherein L2 meets following relational expression: 0 < L2 < R.
The rotary compressor of embodiment according to a second aspect of the present invention, including the motor of embodiment according to a first aspect of the present invention,
Owing to the vibration noise of motor according to embodiments of the present invention is little, efficiency is high, and low cost of manufacture, therefore by arranging the rotary compressor of this motor, such that it is able to have that noise is little, efficiency is high and the advantage such as low cost of manufacture.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the structural representation of rotary compressor according to embodiments of the present invention；
Fig. 2 is the top view of the motor of the rotary compressor shown in Fig. 1；
Fig. 3 is the top view of the punching of the motor described in Fig. 2；
Fig. 4 is the top view of the punching of motor in prior art；
Fig. 5 is the noise spectrum comparison diagram of rotary compressor according to embodiments of the present invention and rotary compressor of the prior art.
Description of reference numerals:
Motor 10；
Stator 1；
Rotor 2；Punching 21；Magnet puts hole 211；Pole center line X1；Adjacent pole centrage X2；
First recess 212；Closest approach a；Solstics b；
Second recess 213；Solstics c；
Rotary compressor 100；
Housing 20；
Driving mechanism 30；Bent axle 301；
Compression mechanism 40；Cylinder 401.
Detailed description of the invention
Being described below in detail embodiments of the invention, 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 same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " 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 the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more these features.In describing the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in the present invention.
The motor 10 for rotary compressor of embodiment according to a first aspect of the present invention is described below with reference to Fig. 2 and Fig. 3.As shown in Figures 2 and 3, motor 10 according to embodiments of the present invention, including stator 1 and rotor 2.Rotor 2 is located in stator 1 and rotatable relative to stator 1, rotor 2 includes iron core, and iron core is made up of multiple punchings 21 stacked up and down, and iron core is wound with coil, being formed with multiple Magnet running through its thickness in each punching 21 and put hole 211, Magnet puts hole 211 for housing Magnet.Motor has multiple magnetic pole, and one of them magnetic pole can be made up of a Magnet, and certain magnetic pole can also be collectively forming by multiple magnets.The shape of Magnet, size can put the shape in hole 211 with corresponding Magnet, equivalently-sized, certain Magnet is arranged on Magnet and puts in hole 211, and the size of Magnet is also less than Magnet and puts the size in hole 211.Wherein, the number of magnetic pole can be even number, for instance 2,4,6,8 etc., and even number of poles is evenly distributed in punching 21.
The line at the center of each pole center and punching 21 is pole center line X1, as shown in Figure 3.The angular bisector of adjacent two pole center line X1 is adjacent pole centrage X2, angle between adjacent two pole center line X1 is 2 α 1, it is to say, as it is shown on figure 3, the angle between the pole center line X1 that is adjacent of each adjacent pole centrage X2 is α 1.Wherein being formed with, on the periphery circle of each punching 21, the first recess 212 inwardly concaving (namely recessed towards the center of punching 21), the number of the first recess 212 is equal to the integral multiple of magnetic pole.Wherein the first recess 212 is integrally formed in punching 21 by the mode of punching press and the first recess 212 is evenly distributed in punching 21.
Motor 10 according to embodiments of the present invention, by the first recess 212 being provided with in the punching 21 of rotor 2 with number of magnetic poles is integral multiple, such that it is able to make the radial electromagnetic force of the rotor 2 of motor 10 reduce, and then the radial electromagnetic force of stator 1 is greatly reduced by rotor 2, such that it is able to make the vibration noise of motor 10 reduce, and the efficiency of motor 10 can be improved.And owing to the first recess 212 is evenly distributed in punching 21, therefore rotor 2 can be made operationally, rotate more steady, reduce noise further, improve efficiency.And, the first recess 212 is formed in punching 21 by the mode of integrated punching, and the formation that so can make the first recess 212 is simpler, and the manufacture of the punching 21 of rotor 2 is simpler, reduces manufacturing process, saves the cost of manufacture.
Wherein it should be noted that the shape of the first recess 212 can be arbitrary, for instance shown in Fig. 3, the first recess 212 can be arc.Alternatively, the first recess 212 can also be made up of multistage straightway, or the first recess 212 can also be made up of the combination of straightway and curved section.
In one embodiment of the invention, the number of the first recess 212 is equal to one times of magnetic pole, that is, the number of the first recess 212 is equal to the number of magnetic pole, each first recess 212 is correspondingly formed in phase the same side of every adjacent pole centrage X2 respectively, such as each first recess 212 can be formed in the side counterclockwise of every adjacent pole centrage X2 accordingly, or each first recess 212 can be formed in the clockwise side of corresponding pole center line X1.Plurality of first recess 212 also for being uniformly distributed, so can ensure that the structural symmetry of rotor 2 in punching 21, and then when rotor 2 rotates in stator 1, it is ensured that the stability that rotor 2 rotates, reduces noise.
In another embodiment of the present invention, the number of the first recess 212 is equal to the twice of pole number, and the both sides of every adjacent pole centrage X2 are each formed with the first recess 212.It is to say, the side counterclockwise of every adjacent pole centrage X2 and clockwise side are all each formed with the first recess 212, as it is shown on figure 3, be formed with two the first recesses 212 between every two adjacent pole centrage X2.Plurality of first recess 212 also for being uniformly distributed, so can ensure that the structural symmetry of rotor 2 in punching 21, and then when rotor 2 rotates in stator 1, it is ensured that the stability that rotor 2 rotates, reduces noise.
In other embodiments of the invention, the number of the first recess 212 can also is that other integral multiples of magnetic pole, for instance three times, four times, five times etc. (not shown go out).Plurality of first recess 212 for being uniformly distributed, so can ensure that the structural symmetry of rotor 2 relative to punching 21, and then when rotor 2 rotates in stator 1, it is ensured that the stability that rotor 2 rotates, reduces noise.
In some examples of the present invention, as shown in Figure 3, the solstics b from corresponding adjacent pole centrage X2 on first recess 212 and the line at the center of punching 21, it is α 2 with the angle between corresponding adjacent pole centrage X2, wherein α 2 meets following relational expression, 0 < α 2 < α 1.Further, the closest approach a from corresponding adjacent pole centrage X2 on first recess 212 and the line at the center of punching 21, being α 3 with the angle between corresponding adjacent pole centrage X2, wherein α 3 meets following relational expression, 0 < α 3 < α 2.Wherein α 2 and α 3 can be shown that the width of the first recess 212, and specifically, α 2 is more big and α 3 more little explanation the first recess 212 is more wide, and α 2 is more little and α 3 more big explanation the first recess 212 is more narrow.
As it is shown on figure 3, in an example of the present invention, the radius of punching 21 is R, on the first recess 212, the beeline from the center of punching 21 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 is formed in punching 21, and specifically, the degree of depth of more little first recess 212 of L1 is more big.
In some currently preferred embodiments of the present invention, the periphery circle of each punching 21 could be formed with the second recess 213 inwardly concaved, the number of the second recess 213 is equal to 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 is relatively big due to the area of the interval magnetic bridge of adjacent pole, can cause that leakage field is relatively big, so the efficiency of motor be also result in certain loss.Motor 10 according to embodiments of the present invention, by arranging the second recess 213 between adjacent pole, such that it is able to make the area every magnetic bridge between adjacent pole reduce, such that it is able to make the leakage field between adjacent pole be greatly reduced, and then improves the efficiency of motor 10.And by arranging the second recess 213, it is also possible to reduce the size of the radial electromagnetic force of the rotor 2 of motor 10 further, so can reduce the vibration noise of motor 10 further.And, the second recess 213 is formed in punching 21 by the mode of integrated punching, and the formation that so can make the second recess 213 is simpler, and the manufacture of the punching 21 of rotor 2 is simpler, reduces manufacturing process, saves the cost of manufacture.
Alternatively, the second recess 213 can be arc.Alternatively, the second recess 213 can also be made up of multistage straightway, or the second recess 213 can also be made up of the combination of straightway and curved section.Alternatively, the center line of each second recess 213 can overlap with adjacent pole centrage X2, and the formation that so can make the second recess 213 is simpler, easy to manufacture.The center line of certainly each second recess 213 can also be without overlapping with pole center line X2, and this specifically can be arranged according to actual design calculation result.
As shown in Figure 3, the solstics c from corresponding adjacent pole centrage X2 on second recess 213 and the line at the center of punching 21, it is α 4 with the angle between corresponding adjacent pole centrage X2, wherein α 4 meets following relational expression, 0 < α 4 < α 3.Wherein α 4 demonstrates the width of the second recess 213, and specifically, α 4 is more big, and the width of the second recess 213 is more big, and α 4 is more little, and the width of the second recess 213 is more little.
Alternatively, wherein the radius of punching 21 is R, and the point on the second recess 213 is L2 from the beeline at the center of punching 21, and wherein L2 meets following relational expression: 0 < L2 < R.Wherein L2 can demonstrate the degree of depth that the second recess 213 is formed in punching 21, and specifically, the degree of depth of more little second recess 213 of L2 is more big.
The rotary compressor 100 of embodiment according to a second aspect of the present invention is described, as it is shown in figure 1, this rotary compressor 100 includes the motor 10 of embodiment according to a first aspect of the present invention referring to Fig. 1.Specifically, rotary compressor 100 has housing 20, compression mechanism 40 and driving mechanism 30, and driving mechanism 30 is included above-mentioned motor 10 and driven the bent axle 301 rotated by this motor 10, the piston that compression mechanism 40 includes cylinder 401, is located in cylinder 401.
Owing to the vibration noise of motor 10 according to embodiments of the present invention is little, efficiency is high, and low cost of manufacture, therefore by arranging the rotary compressor 100 of this motor 10, such that it is able to have that noise is little, efficiency is high and the advantage such as low cost of manufacture.Specifically, this rotary compressor 100 is frequency-changeable compressor.
Referring to Fig. 2, Fig. 3 and Fig. 5, a concrete example according to the present invention is described.
Shown in Fig. 2, Fig. 3 is a quadrupole motor 10, and namely magnetic pole is four, and Magnet is put hole 211 and is also four.The excircle of the punching 21 of rotor 2 is designed with the first recess 212 on the both sides of adjacent pole centrage X2, 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 centrage X2 angle α 1 are 45 °, the size of the first recess 212 is determined by α 2, α 3 and L1, particularly as follows: α 3=20 °, α 2=30 °, L1 are 28.5mm.Two magnetic pole adjacents are provided with the second recess 213 simultaneously, and the size of the second recess 213 is determined by α 4 and L2, specifically, α 4=5 °, L2=27mm.
The motor 10 designed by above technical parameter and compressor, with not there is the first recess 212 and the second recess 213 and the rotary compressor of other parameters identical (such as punching 21 radius R is equal), found by test comparison, the global noise value of the rotary compressor 100 after improvement reduces about 2dB, all there is obvious reduction in multiple frequency band noise figures, as it is shown in figure 5, the efficiency of rotary compressor 100 improves about 1% simultaneously.
Other of rotary compressor 100 according to embodiments of the present invention constitute concrete structure and the connection each other etc. of such as compressor structure 40, driving mechanism 30 and operation is all known for those of ordinary skills, no longer describe in detail here.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
1. the motor for rotary compressor, it is characterised in that including:
Stator and rotor, described rotor is located in described stator, described rotor includes iron core, described iron core is made up of multiple punchings stacked up and down, described motor has multiple magnetic pole, and the line at the center of each described pole center and described punching is pole center line, and the angular bisector of adjacent two described pole center lines is adjacent pole centrage, angle between adjacent two described pole center lines is 2 α 1
Wherein the periphery circle of each described punching is formed with the first recess inwardly concaved, the number of described first recess is equal to the integral multiple of described magnetic pole, being formed with, on the periphery circle of each described punching, the second recess inwardly concaved, the number of described second recess is provided with described second recess equal to the number of described magnetic pole and the adjacent of two described magnetic poles.
2. according to claim 1 for rotary compressor motor, it is characterised in that the number of described first recess is equal to a times of described magnetic pole, and each described first recess is correspondingly formed phase the same side of adjacent pole centrage every described respectively.
3. the motor for rotary compressor according to claim 1, it is characterised in that the number of described first recess is equal to the twice of described magnetic pole, and the both sides of every described adjacent pole centrage are each formed with described first recess.
4. the motor for rotary compressor according to Claims 2 or 3, it is characterized in that, the solstics from corresponding described adjacent pole centrage on described first recess and the line at the center of described punching, it is α 2 with the angle between corresponding described adjacent pole centrage, 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 closest approach from corresponding described adjacent pole centrage on described first recess and the line at the center of described punching, it is α 3 with the angle between corresponding described adjacent pole centrage, wherein α 3 meets following relational expression, 0 < α 3 < α 2.
6. the motor for rotary compressor according to Claims 2 or 3, it is characterized in that, the radius of described punching is R, point on described 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 1, it is characterized in that, the solstics from corresponding described adjacent pole centrage on described second recess and the line at the center of described punching, it is α 4 with the angle between corresponding described adjacent pole centrage, wherein α 4 meets following relational expression, 0 < α 4 < α 3.
8. the motor for rotary compressor according to claim 1, it is characterized in that, the radius of described punching is R, point on described second recess is L2 from the beeline at the center of described punching, and wherein L2 meets following relational expression: 0 < L2 < R.
9. a rotary compressor, it is characterised in that include the motor for rotary compressor according to any one of claim 1-8.
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 CN103762760A (en) | 2014-04-30 |
| CN103762760B true CN103762760B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384588A (en) * | 2001-04-27 | 2002-12-11 | 株式会社日立制作所 | Permanent magnetic rotary motor and its compressor with the motor |
| 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 |
| CN201319527Y (en) * | 2008-12-16 | 2009-09-30 | 珠海格力电器股份有限公司 | Motor rotor structure |
| CN101682220A (en) * | 2007-06-13 | 2010-03-24 | 丰田自动车株式会社 | Dynamo-electric machine |
| EP2355306A2 (en) * | 2010-01-07 | 2011-08-10 | Hitachi, Ltd. | Permanent magnet type rotary electric machine |
| CN103248187A (en) * | 2012-02-01 | 2013-08-14 | 铃木株式会社 | Electric rotating machine |
-
2014
- 2014-01-07 CN CN201410007604.9A patent/CN103762760B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384588A (en) * | 2001-04-27 | 2002-12-11 | 株式会社日立制作所 | Permanent magnetic rotary motor and its compressor with the motor |
| 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 |
| CN101682220A (en) * | 2007-06-13 | 2010-03-24 | 丰田自动车株式会社 | Dynamo-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 |
| EP2355306A2 (en) * | 2010-01-07 | 2011-08-10 | Hitachi, Ltd. | Permanent magnet type rotary electric machine |
| CN103248187A (en) * | 2012-02-01 | 2013-08-14 | 铃木株式会社 | Electric rotating machine |
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| CN103762760A (en) | 2014-04-30 |
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Granted publication date: 20160706 Termination date: 20210107 |