CN104967235A - Permanent magnetic synchronous motor, rotor iron core thereof, and compressor - Google Patents
Permanent magnetic synchronous motor, rotor iron core thereof, and compressor Download PDFInfo
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- CN104967235A CN104967235A CN201510388301.0A CN201510388301A CN104967235A CN 104967235 A CN104967235 A CN 104967235A CN 201510388301 A CN201510388301 A CN 201510388301A CN 104967235 A CN104967235 A CN 104967235A
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- rotor
- rotor core
- synchronous motor
- permagnetic synchronous
- described rotor
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a permanent magnetic synchronous motor, a rotor iron core thereof, and a compressor. The rotor iron core of the permanent magnetic synchronous motor is formed by multiple superposed magnetic steel sheets. The rotor iron core is equipped with a rotor axis hole. The rotor iron core is a cylinder, and the external diameter D1 of the rotor iron core follows a formula: D1=(56+/-0.1)mm. Multiple rotor grooves are arranged around the outer circumference of the rotor iron core. Multiple magnetic grooves are arranged between the rotor grooves and the rotor axis hole. The magnetic grooves are arranged in rhombic manner, and the radial dimensions of the rotor grooves close to end portions of the magnetic grooves are smaller than the radial dimensions of the adjacent rotor grooves. Through applications of the rotor iron core, the permanent magnetic synchronous motor becomes miniature and is high in performance.
Description
Technical field
The present invention relates to technical field of motors, the rotor core especially relating to a kind of permagnetic synchronous motor, the permagnetic synchronous motor with this rotor core and there is the compressor of this permagnetic synchronous motor.
Background technology
Permagnetic synchronous motor electrical travelling of being in has more application in the industry, comprises air-conditioning, refrigerator machine field.The core component of refrigeration plant is compressor, the performance of compressor directly affects the performance of whole refrigerating system, and compressor also consumes most of electric energy of household electrical appliances, be promote the efficiency of compressor, design more efficient motor and drive compressor to be inevitable selection.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention needs the rotor core proposing a kind of permagnetic synchronous motor, by applying this rotor core permagnetic synchronous motor can be made to have miniaturization and the high advantage of performance.
The present invention also needs to propose a kind of permagnetic synchronous motor with this rotor core.
The present invention also needs to propose a kind of compressor with this permagnetic synchronous motor further.
The rotor core of the permagnetic synchronous motor of embodiment according to a first aspect of the present invention, be made up of multiple mutually stacked magnetic links, described rotor core is provided with rotor shaft hatch, described rotor core is cylinder and the outer diameter D 1 of described rotor core meets: D1=(56 ± 0.1) mm, excircle around described rotor core is provided with multiple rotor, multiple magnet slot is provided with between described rotor and described rotor shaft hatch, described multiple magnet slot assumes diamond in shape distribution, wherein the radial dimension of the described rotor of the end of contiguous described magnet slot is less than the radial dimension of described rotor adjacent with it.
According to the rotor core of the permagnetic synchronous motor of the embodiment of the present invention, outer diameter D 1 due to rotor core is (56 ± 0.1) mm, and the radial dimension of rotor adjacent is with it less than by the radial dimension of the rotor making the end of adjacent magnet groove, thus the length of magnet slot increases, the volume of the magnet be located in this magnet slot can be improved, rotor field intensity is larger, thus the rotational efficienty of rotor core is high, running wastage is low, thus permagnetic synchronous motor can be made to have miniaturization and the high advantage of performance by this rotor core of application.
In addition, also following additional technical feature can be had according to the rotor core of permagnetic synchronous motor of the present invention:
According to one embodiment of present invention, the quantity N of described rotor meets: 28≤N≤32, described multiple rotor is divided into many group rotors groove group, described many group rotors groove group is symmetrical relative to pole center line, and the radial dimension often organizing each rotor in described rotor group is all unequal each other.
According to one embodiment of present invention, the radial dimension often organizing each described magnet slot in described rotor group increases on the direction of centre gradually at the two ends from described magnet slot.
According to one embodiment of present invention, often organize in described rotor group, the radial dimension of the described rotor of the acute ends of contiguous described magnet slot is less than the radial dimension of the described rotor of the obtuse angle end of contiguous described magnet slot.
According to one embodiment of present invention, the minimum clearance L between the end of described magnet slot and described rotor meets: L >=0.5mm.
According to one embodiment of present invention, at least one end in the two ends of described rotor core is provided with cover plate, described cover plate is provided with distinguishes corresponding through hole with the described rotor shaft hatch on described rotor core, described rotor, described cover plate presses and is fixed on described rotor core, and wherein said cover plate and described rotor core are provided with the pre-manufactured hole that presses.
According to one embodiment of present invention, described in press prefabricated hole site on the acute angle center line of described magnet groove, described in the pre-manufactured hole that presses be two and be centrosymmetric layout relative to described rotor shaft hatch.
According to one embodiment of present invention, the pre-manufactured hole that presses described in runs through described rotor core.
The permagnetic synchronous motor of embodiment according to a second aspect of the present invention, comprises the rotor core of permagnetic synchronous motor described according to a first aspect of the present invention.
Because rotor core has above-mentioned beneficial effect, therefore have miniaturization according to the permagnetic synchronous motor of the embodiment of the present invention and the high advantage of performance, technological value is high.The compressor of embodiment according to a third aspect of the present invention, comprises permagnetic synchronous motor described according to a second aspect of the present invention.
The permagnetic synchronous motor of second aspect present invention embodiment, as shown in Figure 3, comprise the rotor core of stator and above-mentioned permagnetic synchronous motor, rotor core is located in stator.Therefore compressor has that performance is good, operational efficiency advantages of higher.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the vertical view of the rotor core of permagnetic synchronous motor according to the embodiment of the present invention;
Fig. 2 is the vertical view of the cover plate of the rotor core of permagnetic synchronous motor according to the embodiment of the present invention;
Fig. 3 is the vertical view of the permagnetic synchronous motor according to the embodiment of the present invention.
Reference numeral:
Permagnetic synchronous motor 100;
Rotor core 1;
Rotor shaft hatch 11; Rotor group 12; Rotor 121;
Magnet slot 13; Acute ends 131; Obtuse angle end 132;
Cover plate 2; Through hole 21; Press pre-manufactured hole 22;
Stator 3.
Embodiment
Be 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 element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
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, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can 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, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below with reference to Fig. 1-Fig. 3, the rotor core 1 according to the permagnetic synchronous motor 100 of the embodiment of the present invention is described.Can be cage rotor iron core 1 according to the rotor core 1 of the embodiment of the present invention.
Rotor core 1 is made up of multiple mutually stacked magnetic links, rotor core 1 is provided with rotor shaft hatch 11, rotor core 1 is cylinder and the outer diameter D 1 of rotor core 1 meets: D1=(56 ± 0.1) mm, excircle wherein around rotor core 1 is provided with multiple rotor 121, is equipped with squirrel-cage bar in each rotor 121.The bearing of trend of each rotor 121 can be radial direction, between rotor 121 and rotor shaft hatch 11, be provided with multiple magnet slot 13, in an embodiment of the present invention, the quantity of magnet slot 13 can be even number, in example as shown in Figure 1, the quantity of magnet slot 13 is four.
Multiple magnet slot 13 assumes diamond in shape distribution, namely multiple magnet slot 13 magnetic links projection in the plane form the distribution that assumes diamond in shape.As shown in Figure 1, four magnet slot 13 lay respectively on the four edges of rhombus, wherein, between adjacent two magnet slot 13, there is gap, each magnet slot 13 has acute ends 131 and obtuse angle end 132 respectively, such as shown in Fig. 1, one end of the contiguous rhombus acute angle of each magnet slot 13 is acute ends 131, and the one end at the contiguous rhombus obtuse angle of each magnet slot 13 is obtuse angle end 132.
In an embodiment of the present invention, the radial dimension of the rotor 121 of the end of adjacent magnet groove 13 is less than the radial dimension of rotor 121 adjacent with it.Here it should be noted that, above-mentioned " rotor 121 of the end of adjacent magnet groove 13 " refers to the rotor 121 of the acute ends 131 of adjacent magnet groove 13 and/or the obtuse angle end 132 of adjacent magnet groove 13, that is, on rotor core 1, in multiple rotor 121, the radial dimension of the rotor 121 of the acute ends 131 of contiguous each magnet slot 13 is less than the radial dimension of the rotor 121 adjacent with this rotor 121; Or on rotor core 1, in multiple rotor 121, the radial dimension of the rotor 121 of the obtuse angle end 132 of contiguous each magnet slot 13 is less than the radial dimension of the rotor 121 adjacent with this rotor 121; Again or, on rotor core 1, in multiple rotor 121, the radial dimension of the rotor 121 of the acute ends 131 of contiguous each magnet slot 13 is less than the radial dimension of the rotor 121 adjacent with this rotor 121, simultaneously on this rotor core 1, in multiple rotor 121, the radial dimension of the rotor 121 of the obtuse angle end 132 of contiguous each magnet slot 13 is less than the radial dimension of the rotor 121 adjacent with this rotor 121.
According to the rotor core 1 of the permagnetic synchronous motor 100 of the embodiment of the present invention, outer diameter D 1 due to rotor core 1 is (56 ± 0.1) mm, and the radial dimension of rotor 121 adjacent is with it less than by the radial dimension of the rotor 121 making the end of adjacent magnet groove 13, thus the end of magnet slot 13 can extend further to the direction of rotor 121, the length of the magnet slot 13 of the rotor core 1 in the embodiment of the present invention (namely magnet slot 13 magnetic links projected length in the plane) compared to the magnet slot length of all equal rotor core of the radial dimension of rotor of the prior art, be conducive to the arrangement of magnet slot 13 on rotor core 1 like this, and the size of the magnet be located in this magnet slot 13 can be increased, thus for the rotor core 1 of above-mentioned size, the length of magnet slot 13 increases, the volume of the magnet be located in this magnet slot 13 can be improved, rotor field intensity is larger, thus the rotational efficienty of rotor core 1 is high, running wastage is low, thus permagnetic synchronous motor 100 can be made to have miniaturization and the high advantage of performance by this rotor core 1 of application.
Further, in an embodiment of the present invention, this rotor core 1 also has following size characteristic, and wherein the internal diameter D2 of rotor shaft hatch 11 meets: 12mm≤13mm, can be convenient to the arrangement of magnet slot 13 so further, is conducive to the length extending magnet slot 13.
Alternatively, minimum clearance L between the end of magnet slot 13 and rotor 121 meets: L >=0.5mm, that is, be L with the nearest marginal gap of in multiple rotor 121 in the acute ends 131 of magnet slot 13 or obtuse angle end 132, namely the minimum value of L can be 0.5mm, namely minimum with the nearest marginal gap of in multiple rotor 121 in the acute ends 131 of magnet slot 13 or obtuse angle end 132 can be 0.5mm, can ensure that rotor core 1 has thus effective every magnetic gap, and magnet slot 13 can be made to have longer length.
In some embodiments of the invention, alternatively, the quantity N of rotor 121 meets: 28≤N≤32, multiple rotor 121 is divided into many group rotors groove group 12, many group rotors groove group 12 is symmetrical relative to pole center line, in embodiments of the present invention, rotor group 12 comprises four, and symmetrical relative to the rhombus acute angle centre line L r of magnet slot 13 and obtuse angle centre line L d.The radial dimension of each rotor 121 in every group rotor groove group 12 is all unequal each other, thus can advantageously in the arrangement of magnet slot 13, and the radial dimension of each rotor 121 in every group rotor groove group 12 is all unequal each other, the size of the squirrel-cage bar be located in this rotor 121 can be made unequal each other, to induce the speed of electromotive force and electric current faster for the magnetic line of force in squirrel-cage bar cutting stator 3 magnetic field of different size thus, thus the rotation of rotor core 1 is faster, can improve the operational efficiency of permagnetic synchronous motor 100 thus.
Alternatively, the radial dimension of each magnet slot 13 in every group rotor groove group 12 increases on the direction of centre gradually at the two ends from magnet slot 13.That is, in every group rotor groove group 12, the radial dimension of the acute ends 131 of adjacent magnet groove 13 and the rotor 121 at obtuse angle end 132 place is little, and from magnet slot 13 two ends towards the direction, middle part of magnet slot 13, the radial dimension of rotor 121 increases gradually.The two ends of such magnet slot 13 can all stretch out, and are conducive to the arrangement of magnet slot 13 further.
Alternatively, in every group rotor groove group 12, the radial dimension of the rotor 121 of the acute ends 131 of adjacent magnet groove 13 is less than the radial dimension of the rotor 121 of the obtuse angle end 132 of adjacent magnet groove 13.The acute ends 131 of such magnet slot 13 closer to rotor 121, can more be conducive to the arrangement of magnet slot 13.
In an embodiment of the present invention, at least one end in the two ends of rotor core 1 is provided with cover plate 2, cover plate 2 is provided with and distinguishes corresponding through hole 21 with the rotor shaft hatch 11 on rotor core 1, rotor 121 as shown in Figure 2, wherein cover plate 2 does not arrange the through hole corresponding with magnet slot 13.Cover plate 2 presses and is fixed on rotor core 1, and wherein cover plate 2 and rotor core 1 are provided with the pre-manufactured hole 22 that presses.Cover plate 2 can be utilized to play fixation to the magnet be located in magnet slot 13 by arranging cover plate 2.Alternatively, the two ends of rotor core 1 are equipped with cover plate 2.
Alternatively, the pre-manufactured hole 22 that presses is positioned on the acute angle center line of magnet groove, and the pre-manufactured hole 22 that presses is two and is centrosymmetric layout relative to rotor shaft hatch 11.Cover plate 2 fixing steadily on rotor core 1 can be made thus.Alternatively, the aperture D3 of the pre-manufactured hole 22 that presses meets: D3≤5mm, and preferably, 3mm≤D3≤5mm, the pre-manufactured hole 22 that can make thus to press dodges the layout of rotor shaft hatch 11 on rotor core 1, magnet slot 13, rotor 121, rational in infrastructure.
Alternatively, the pre-manufactured hole 22 that presses can run through rotor core 1, and that is, the multiple magnetic links in rotor core 1 can be connected by connector.Be conducive to the connective stability of multiple magnetic links.
The permagnetic synchronous motor 100 of second aspect present invention embodiment, as shown in Figure 3, comprise the rotor core 1 of stator 3 and above-mentioned permagnetic synchronous motor 100, rotor core 1 is located in stator 3.Because rotor core 1 has above-mentioned beneficial effect, therefore have miniaturization according to the permagnetic synchronous motor 100 of the embodiment of the present invention and the high advantage of performance, technological value is high.
The compressor of third aspect present invention embodiment, comprises above-mentioned permagnetic synchronous motor 100, and therefore compressor has that performance is good, operational efficiency advantages of higher.
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 to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. the rotor core of a permagnetic synchronous motor, described rotor core is made up of multiple mutually stacked magnetic links, and described rotor core is provided with rotor shaft hatch, it is characterized in that, described rotor core is cylinder and the outer diameter D 1 of described rotor core meets: D1=(56 ± 0.1) mm
Excircle around described rotor core is provided with multiple rotor, multiple magnet slot is provided with between described rotor and described rotor shaft hatch, described multiple magnet slot assumes diamond in shape distribution, and wherein the radial dimension of the described rotor of the end of contiguous described magnet slot is less than the radial dimension of described rotor adjacent with it.
2. the rotor core of permagnetic synchronous motor according to claim 1, it is characterized in that, the quantity N of described rotor meets: 28≤N≤32, described multiple rotor is divided into many group rotors groove group, described many group rotors groove group is symmetrical relative to pole center line, and the radial dimension often organizing each rotor in described rotor group is all unequal each other.
3. the rotor core of permagnetic synchronous motor according to claim 2, is characterized in that, the radial dimension often organizing each described magnet slot in described rotor group increases on the direction of centre gradually at the two ends from described magnet slot.
4. the rotor core of permagnetic synchronous motor according to claim 3, it is characterized in that, often organize in described rotor group, the radial dimension of the described rotor of the acute ends of contiguous described magnet slot is less than the radial dimension of the described rotor of the obtuse angle end of contiguous described magnet slot.
5. the rotor core of permagnetic synchronous motor according to claim 1, is characterized in that, the minimum clearance L between the end of described magnet slot and described rotor meets: L >=0.5mm.
6. the rotor core of permagnetic synchronous motor according to claim 1, it is characterized in that, at least one end in the two ends of described rotor core is provided with cover plate, described cover plate is provided with distinguishes corresponding through hole with the described rotor shaft hatch on described rotor core, described rotor, described cover plate presses and is fixed on described rotor core, and wherein said cover plate and described rotor core are provided with the pre-manufactured hole that presses.
7. the rotor core of permagnetic synchronous motor according to claim 6, is characterized in that, described in press prefabricated hole site on the acute angle center line of described magnet groove, described in the pre-manufactured hole that presses be two and be centrosymmetric layout relative to described rotor shaft hatch.
8. the rotor core of permagnetic synchronous motor according to claim 6, is characterized in that, described in the pre-manufactured hole that presses run through described rotor core.
9. a permagnetic synchronous motor, is characterized in that, comprises the rotor core of the permagnetic synchronous motor according to any one of claim 1-8.
10. a compressor, is characterized in that, comprises permagnetic synchronous motor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510388301.0A CN104967235A (en) | 2015-06-30 | 2015-06-30 | Permanent magnetic synchronous motor, rotor iron core thereof, and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510388301.0A CN104967235A (en) | 2015-06-30 | 2015-06-30 | Permanent magnetic synchronous motor, rotor iron core thereof, and compressor |
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| Publication Number | Publication Date |
|---|---|
| CN104967235A true CN104967235A (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510388301.0A Pending CN104967235A (en) | 2015-06-30 | 2015-06-30 | Permanent magnetic synchronous motor, rotor iron core thereof, and compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018090415A1 (en) * | 2016-11-18 | 2018-05-24 | 广东威灵电机制造有限公司 | Rotor and permanent magnet synchronous motor having same, refrigerator compressor, and dish washer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001346369A (en) * | 2000-06-01 | 2001-12-14 | Matsushita Electric Ind Co Ltd | Self-excitation type synchronous motor comprising permanent magnet |
| CN2894036Y (en) * | 2006-02-28 | 2007-04-25 | 曹小元 | Economic self-starting permanent magnetic synchronous motor |
| CN101630887A (en) * | 1999-07-16 | 2010-01-20 | 松下电器产业株式会社 | Permanent magnet synchronous motor |
| CN102324820A (en) * | 2011-08-17 | 2012-01-18 | 浙江大学 | Magnetic field modulated multi-power port permanent magnetic motor |
| CN204794424U (en) * | 2015-06-30 | 2015-11-18 | 安徽美芝制冷设备有限公司 | PMSM and rotor core , compressor thereof |
-
2015
- 2015-06-30 CN CN201510388301.0A patent/CN104967235A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630887A (en) * | 1999-07-16 | 2010-01-20 | 松下电器产业株式会社 | Permanent magnet synchronous motor |
| JP2001346369A (en) * | 2000-06-01 | 2001-12-14 | Matsushita Electric Ind Co Ltd | Self-excitation type synchronous motor comprising permanent magnet |
| CN2894036Y (en) * | 2006-02-28 | 2007-04-25 | 曹小元 | Economic self-starting permanent magnetic synchronous motor |
| CN102324820A (en) * | 2011-08-17 | 2012-01-18 | 浙江大学 | Magnetic field modulated multi-power port permanent magnetic motor |
| CN204794424U (en) * | 2015-06-30 | 2015-11-18 | 安徽美芝制冷设备有限公司 | PMSM and rotor core , compressor thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018090415A1 (en) * | 2016-11-18 | 2018-05-24 | 广东威灵电机制造有限公司 | Rotor and permanent magnet synchronous motor having same, refrigerator compressor, and dish washer |
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