CN106849425B - For the rotor core of motor, motor, compressor and dish-washing machine - Google Patents

For the rotor core of motor, motor, compressor and dish-washing machine Download PDF

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Publication number
CN106849425B
CN106849425B CN201611131404.XA CN201611131404A CN106849425B CN 106849425 B CN106849425 B CN 106849425B CN 201611131404 A CN201611131404 A CN 201611131404A CN 106849425 B CN106849425 B CN 106849425B
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China
Prior art keywords
slot
magnetic shoe
rotor core
motor
straight line
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CN201611131404.XA
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Chinese (zh)
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CN106849425A (en
Inventor
王飞
陈金涛
王进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Welling Motor Manufacturing Co Ltd
Midea Welling Motor Technology Shanghai Co Ltd
Original Assignee
Guangdong Welling Motor Manufacturing Co Ltd
Midea Welling Motor Technology Shanghai Co Ltd
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Application filed by Guangdong Welling Motor Manufacturing Co Ltd, Midea Welling Motor Technology Shanghai Co Ltd filed Critical Guangdong Welling Motor Manufacturing Co Ltd
Priority to CN201611131404.XA priority Critical patent/CN106849425B/en
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets

Abstract

The invention discloses a kind of rotor cores for motor, motor, compressor and dish-washing machine, multiple cage grooves and multiple magnetic shoe slots are formed on the rotor core for motor, circumferentially-spaced arrangement of multiple cage grooves along the rotor core, the multiple magnetic shoe slot is located at the inside of the multiple cage grooves, and multiple magnetic shoe slots are along the circumferentially-spaced arrangement of the rotor core, the magnetic shoe slot includes the first straight line slot and second straight line slot circumferentially along the rotor core at least partially, it is in the angle of the first predetermined angular between the first straight line slot and the second straight line slot.Rotor core according to the present invention for motor is conducive to utilize reluctance torque by changing the structure of magnetic shoe slot.Furthermore it is also possible to reduce the dosage of magnetic shoe, cost is reduced.

Description

For the rotor core of motor, motor, compressor and dish-washing machine
Technical field
The present invention relates to technical field of motors, are used for more particularly to a kind of for the rotor core of motor, equipped with above-mentioned The motor of the rotor core of motor, the compressor equipped with the above-mentioned rotor core for motor and equipped with above-mentioned for motor The dish-washing machine of rotor core.
Background technique
In the related technology, self-starting permanent magnet synchronous motor majority uses cage-shaped structure, is realized and is started using mouse cage winding, Have it is some use solid rotor structure, utilize solid rotor conductive magneto-conductive function generate vortex realize start.However, existing skill Magnetic shoe slot in art is one section of straight line slot structure, and magnetic shoe dosage is big, and torque component is mainly permanent-magnet torque, and reluctance torque is substantially Do not utilize.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention One purpose is to propose a kind of rotor core for motor, and the structure of magnetic shoe slot changes in the rotor core for motor Become, is conducive to utilize reluctance torque.
It is another object of the present invention to propose a kind of motor, the motor is equipped with the above-mentioned rotor iron for motor Core, magnetic shoe dosage is reduced in the motor, and cost reduces.
Another object of the present invention is to propose that a kind of compressor, the compressor are equipped with above-mentioned turn for motor Sub- iron core.
Another purpose of the invention is that proposing a kind of dish-washing machine, the dish-washing machine is equipped with above-mentioned turn for motor Sub- iron core.
The rotor core for motor of embodiment according to a first aspect of the present invention is formed on the rotor core multiple Cage grooves and multiple magnetic shoe slots, circumferentially-spaced arrangement of multiple cage grooves along the rotor core, the multiple magnetic shoe slot It is located at the inside of the multiple cage grooves, and multiple magnetic shoe slots are along the circumferentially-spaced arrangement of the rotor core, at least one The part magnetic shoe slot includes the first straight line slot and second straight line slot circumferentially along the rotor core, and described first It is in the angle of the first predetermined angular between straight-line groove and the second straight line slot.
Rotor core according to an embodiment of the present invention for motor is conducive to utilize by changing the structure of magnetic shoe slot Reluctance torque.In addition, when magnetic shoe is mounted in magnetic shoe slot, it is possible to reduce the dosage of magnetic shoe reduces cost.
In addition, the rotor core according to the above embodiment of the present invention for motor also has following additional technology special Sign:
According to some embodiments of the present invention, first predetermined angular is in the range of 120 ° to 160 °.
According to some embodiments of the present invention, the multiple magnetic shoe slot is divided into two magnetic shoe slot groups positioned opposite up and down, And the end of the magnetic shoe slot group is equipped with the second straight line slot.
Further, each magnetic shoe slot group includes two magnetic shoe slots, and each magnetic shoe slot includes first straight line slot With second straight line slot, and in each magnetic shoe slot group two magnetic shoe slots first straight line slot it is adjacent.
Further, range of the angle of the first straight line slot of two magnetic shoe slots at 105 ° to 145 ° in each magnetic shoe slot group It is interior.
According to some embodiments of the present invention, multiple cage grooves are divided into the radial direction along the rotor core and multiple institutes Magnetic shoe slot multiple cage grooves groups correspondingly are stated, each cage grooves group includes spaced apart multiple cage grooves, and each The clearance distance of two neighboring cage grooves is straight from the first straight line slot in corresponding magnetic shoe slot to second in cage grooves group It is gradually increased on the direction of wire casing.
According to some embodiments of the present invention, multiple cage grooves include at least two different groove profiles.
According to some embodiments of the present invention, with the free end of the second straight line slot along the radial phase of the rotor core Pair cage grooves extend adjacent to the free end of the second straight line slot.
According to some embodiments of the present invention, the first straight line slot of the magnetic shoe slot is connected with the second straight line slot.
The motor of embodiment according to a second aspect of the present invention, comprising: rotor core, the rotor core are described above Rotor core for motor;Multiple magnetic shoes, the multiple magnetic shoe are placed in multiple magnetic shoe slots correspondingly In one straight-line groove.
The compressor of embodiment according to a third aspect of the present invention, including the rotor core for motor described above.
The dish-washing machine of embodiment according to a fourth aspect of the present invention, including the rotor core for motor described above.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:
Fig. 1 is the schematic diagram of the rotor core according to an embodiment of the present invention for motor;
Fig. 2 is the schematic diagram of the rotor core according to an embodiment of the present invention for motor, wherein distance S1 to S7 is to turn The sub- facewidth;
Fig. 3 is a partial structure diagram of motor according to an embodiment of the present invention;
Fig. 4 is the distribution diagram of magnetic line of force of motor according to an embodiment of the present invention;
Fig. 5 is the partial structure diagram of motor in the prior art.
Appended drawing reference:
For the rotor core 100 of motor,
Cage grooves 1,
Magnetic shoe slot 2, first straight line slot 21, second straight line slot 22, the free end 221 of second straight line slot 22,
Motor 200, magnetic shoe 210.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The rotor core 100 according to an embodiment of the present invention for motor is described in detail below with reference to Fig. 1 to Fig. 4.
Specifically, the rotor core 100 for motor of embodiment according to a first aspect of the present invention, rotor core 100 On be formed with multiple cage grooves 1 and multiple magnetic shoe slots 2, multiple cage grooves 1 along rotor core 100 circumferentially-spaced arrangement, it is multiple Magnetic shoe slot 2 is located at the inside side of 100 center of adjacent rotor iron core (for example, in Fig. 1) of multiple cage grooves 1, and multiple magnetic Along the circumferentially-spaced arrangement of rotor core 100, at least part magnetic shoe slot 2 includes that first straight line slot 21 and second are straight for watt slot 2 Wire casing 22, first straight line slot 21 and second straight line slot 22 along rotor core 100 circumferentially, first straight line slot 21 and second It is in the angle (angle, θ 2 in referring to Fig.1) of the first predetermined angular between straight-line groove 22.Knot in this way by changing magnetic shoe slot 2 Structure is conducive to utilize reluctance torque.In addition, when magnetic shoe is mounted in magnetic shoe slot 2, it is possible to reduce the dosage of magnetic shoe reduces Cost.
For example, being formed in the embodiment of the present invention as depicted in figs. 1 and 2, on rotor core 100, there are four magnetic shoe slots 2。
Wherein, can cast liquid aluminium liquid in cage grooves 1, form cast-in aluminum squirrel cage after cooling.
Rotor core 100 according to an embodiment of the present invention for motor is conducive to by changing the structure of magnetic shoe slot 2 Utilize reluctance torque.In addition, when magnetic shoe is mounted in magnetic shoe slot 2, it is possible to reduce the dosage of magnetic shoe reduces cost.
As shown in Figure 1, some specific embodiments according to the present invention, model of first predetermined angular at 120 ° to 160 ° In enclosing (angle, θ 2 in referring to Fig.1).Thus, it is possible to improve space utilization rate, be conducive to the distribution situation for changing the magnetic line of force.
Wherein, first predetermined angular can be 120 °, 130 °, 140 °, 150 ° or 160 ° etc., first predetermined angle Degree adaptability can be arranged according to actual needs.
Some specific embodiments according to the present invention combined with Figure 1 and Figure 2, it is positioned opposite up and down that multiple magnetic shoe slots 2, which divide, Two magnetic shoe slot groups, and the end of the magnetic shoe slot group is equipped with second straight line slot 22.As a result, convenient for further in two magnetic shoe slots The magnetic shoe for placing identical polar or opposed polarity in group respectively, improves the service performance of rotor core 100.
Further, referring to Fig.1, each magnetic shoe slot group includes two magnetic shoe slots 2, and each magnetic shoe slot 2 includes first Straight-line groove 21 and second straight line slot 22, and in each magnetic shoe slot group two magnetic shoe slots 2 first straight line slot 21 it is adjacent.In this way, making The arrangement for obtaining magnetic shoe slot 2 is more reasonable.
Further, as shown in Figure 1, in each magnetic shoe slot group the first straight line slot 21 of two magnetic shoe slots 2 folder Angle is in the range of 105 ° to 145 ° (angle, θ 1 in referring to Fig.1).As a result, the structure arrangement of magnetic shoe slot 2 is more reasonable.
Specifically, for example, in the embodiment of the present invention as depicted in figs. 1 and 2, four are formed on rotor core 100 A magnetic shoe slot 2, four magnetic shoe slots 2 substantially form the structure of similar ellipse so that space utilization rate is high, the magnetic line of force be distributed compared with It is good.
Referring to Fig. 2 and Fig. 1 and Fig. 4 is combined, some specific embodiments according to the present invention, it is multiple that multiple cage grooves 1, which are divided, Cage grooves group, multiple cage grooves groups are corresponded along the radial direction of rotor core 100 and multiple magnetic shoe slots 2, each cage grooves Group includes spaced apart multiple cage grooves 1, and in each cage grooves group, the clearance gap of two neighboring cage grooves 1 From (referring to the clearance distance S1 to clearance distance S7) in Fig. 2 from the first straight line slot 21 to the second in corresponding magnetic shoe slot 2 It is gradually increased on the direction of straight-line groove 22.That is, S1 < S2 < S3 < S4 < S5 < S6 < S7, is conducive to the magnetic line of force preferably in this way Distribution.
Wherein, referring to Fig. 2, in one particular embodiment of the present invention, S1=1.5441 millimeters, S2=1.5883 milli Rice, S3=1.6692 millimeters, S4=1.7727 millimeters, S5=1.8808 millimeters, S6=1.9750 millimeters, S7=2.0390 milli Rice.The specific distribution situation of the magnetic line of force is as shown in Figure 4.
Some specific embodiments according to the present invention, multiple cage grooves 1 include at least two different groove profiles.As a result, may be used Rotor core 100 to be designed to different structure type, thus the range of choice to extend one's service.
Wherein, the groove profile that multiple cage grooves 1 include can be two kinds, three kinds, four kinds etc..
Some specific embodiments according to the present invention combined with Figure 1 and Figure 2, with the free end 221 of second straight line slot 22 along turning The cage grooves 1 diametrically of sub- iron core 100 extend adjacent to the free end 221 of second straight line slot 22.That is, multiple In cage grooves 1, the free end 221 with second straight line slot 22 can extend along the cage grooves 1 diametrically of rotor core 100 To the free end 221 of neighbouring second straight line slot 22.Be conducive to the magnetic line of force as a result, to be better distributed.
Referring to Fig.1, some specific embodiments according to the present invention, the first straight line slot 21 and second straight line slot of magnetic shoe slot 2 22 are connected.Allow the magnetic shoe limited jointly by first straight line slot 21 and second straight line slot 22 for installing magnetic shoe in this way Slot 2, in terms of existing technologies, the present invention change the structure type of magnetic shoe slot 2, can use reluctance torque, also advantageous In the dosage for reducing magnetic shoe.
Referring to Fig. 3 and combined with Figure 1 and Figure 2, motor 200 of embodiment according to a second aspect of the present invention, wherein motor 200 It can include: rotor core and multiple magnetic shoes 210 for permanent magnet synchronous motor etc., motor 200, the rotor core is described above The rotor core 100 for motor, multiple magnetic shoes 210 are placed in the first straight line slot in multiple magnetic shoe slots 2 correspondingly In 21.That is, corresponding magnetic shoe 210 is mounted in first straight line slot 21.As a result, by being arranged on the motor The rotor core 100 for motor of above-mentioned first aspect embodiment, it is possible to reduce dosage, the cost of magnetic shoe 210 reduce.
Wherein, the pole S in Fig. 3, the pole N respectively represent the polarity of magnetic shoe 210.Magnetic shoe 210 can be in the shape of cuboid, magnetic Watts 210 can be made of rare earth material.Certainly, in other embodiments of the invention, magnetic shoe 210 can also be with arc-shaped tile Shape etc., at this point, the needs of magnetic shoe slot 2 are adaptively adjusted as shape compatible with the magnetic shoe of the arc tile, magnetic shoe 210 can To be made of materials such as ferrites.The concrete shape and material of magnetic shoe 210 adaptability can select according to actual needs.
The compressor of embodiment according to a third aspect of the present invention, including the rotor core 100 for motor described above. As a result, by the way that the rotor core 100 for motor of above-mentioned first aspect embodiment is arranged on the compressor, can protect While demonstrate,proving the service performance of compressor, cost is reduced.
The dish-washing machine of embodiment according to a fourth aspect of the present invention, including the rotor core for motor described above.By This can guaranteed by the way that the rotor core 100 for motor of above-mentioned first aspect embodiment is arranged on the dish-washing machine While the service performance of dish-washing machine, cost is reduced.
The invention will be further described with reference to the accompanying drawings and embodiments.
The invention discloses a kind of rotor 100 for motor and motor 200, compressor and the dish-washing machine with it, electricity Machine 200 includes: rotor core 100, cast-in aluminum squirrel cage and four magnetic shoes 210, is formed on rotor core circumferentially spaced more A cage grooves 1 and the four magnetic shoe slots 2 for being provided at circumferentially spaced and being located at multiple 1 insides of cage grooves, each magnetic shoe slot 2 are straight by two sections Wire casing (first straight line slot 21 and second straight line slot 22 i.e. above-mentioned) is constituted, and magnetic shoe 210 is rectangular shape, and four magnetic shoes 210 are individually positioned in four magnetic shoe slots 2;At least there are two kinds of groove profiles in cage grooves 1;The facewidth of rotor tooth between cage grooves 1 For uneven distribution, the facewidth of the outside between same polarity magnetic shoe 210 is minimum, the facewidth of the outside between heteropolarity magnetic shoe 210 It is maximum.
For example, in the embodiment of the present invention as shown in Figure 3, two in one group of magnetic shoe slot group located above or following The magnetic shoe 210 of same polarity is placed in magnetic shoe slot 2, not homopolarity is placed in two magnetic shoe slots 2 of left or right side The magnetic shoe 210 of property.
The purpose of the present invention is to provide a kind of rotor and with its permanent magnet synchronous motor, compressor and dish-washing machine, institute Stating for the rotor of permanent magnet synchronous motor includes: rotor core, cast-in aluminum squirrel cage and four magnetic shoes, is formed on the rotor core Circumferentially spaced multiple cage grooves and the four magnetic shoe slots for being provided at circumferentially spaced and being located on the inside of multiple cage grooves, often A magnetic shoe slot is made of two sections of straight-line grooves, and the magnetic shoe is rectangular shape, and four magnetic shoes are individually positioned in four magnetic In watt slot;At least there are two kinds of groove profiles in the cage grooves;The facewidth of rotor tooth between the cage grooves is uneven distribution, together The facewidth of outside between polarity magnetic shoe is minimum, and the facewidth of the outside between heteropolarity magnetic shoe is maximum.Using reluctance torque, reduce Magnetic shoe dosage reduces motor cost.
Rotor according to an embodiment of the present invention for motor, comprising: rotor core is formed with week on the rotor core To spaced multiple cage grooves and be provided at circumferentially spaced and be located at multiple cage grooves on the inside of four magnetic shoe slots, it is described Each magnetic shoe slot is made of two sections of straight-line grooves, and 2≤160 ° of the 120 °≤θ of angle of two sections of straight-line grooves.Four magnetic shoes are rectangular Body structure, and four magnetic shoes are individually positioned in four magnetic shoe slots.Place the phase of two magnetic shoe slots of same pole magnetic shoe 1≤145 ° of the 105 °≤θ of angle of adjacent straight-line groove.The rotor facewidth is the uneven facewidth, and along the surface of same pole to not With being gradually increased within the scope of 90 ° of the surface of magnetic pole.Using reluctance torque, reduce magnetic shoe dosage, reduces motor cost.
Compare existing structure, the invention has the following advantages that using reluctance torque, reduce magnetic shoe dosage, reduce motor at This.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms need not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (11)

1. a kind of rotor core for motor, which is characterized in that be formed with multiple cage grooves and multiple on the rotor core Magnetic shoe slot, along the circumferentially-spaced arrangement of the rotor core, the multiple magnetic shoe slot is located at the multiple multiple cage grooves The inside of cage grooves, and multiple magnetic shoe slots are along the circumferentially-spaced arrangement of the rotor core, at least part magnetic shoe Slot includes the first straight line slot and second straight line slot circumferentially along the rotor core, the first straight line slot with it is described It is in the angle of the first predetermined angular between second straight line slot;
Multiple cage grooves are divided into radial direction and multiple magnetic shoe slots multiple mouse cages correspondingly along the rotor core Slot group, each cage grooves group include spaced apart multiple cage grooves, and two neighboring cage grooves in each cage grooves group Clearance distance is gradually increased from the first straight line slot to the direction of second straight line slot in corresponding magnetic shoe slot.
2. the rotor core according to claim 1 for motor, which is characterized in that first predetermined angular is at 120 ° To in the range of 160 °.
3. the rotor core according to claim 1 for motor, which is characterized in that the multiple magnetic shoe slot is divided into up and down Two magnetic shoe slot groups positioned opposite, and the end of the magnetic shoe slot group is equipped with the second straight line slot.
4. the rotor core according to claim 3 for motor, which is characterized in that each magnetic shoe slot group includes two Magnetic shoe slot, each magnetic shoe slot include first straight line slot and second straight line slot, and two magnetic shoe slots in each magnetic shoe slot group First straight line slot it is adjacent.
5. the rotor core according to claim 4 for motor, which is characterized in that two magnetic shoes in each magnetic shoe slot group The angle of the first straight line slot of slot is in the range of 105 ° to 145 °.
6. the rotor core according to any one of claims 1-5 for motor, which is characterized in that multiple mouse cages Slot includes at least two different groove profiles.
7. the rotor core according to any one of claims 1-5 for motor, which is characterized in that straight with described second The free end of wire casing extends adjacent to the free end of the second straight line slot along the cage grooves diametrically of the rotor core.
8. the rotor core according to any one of claims 1-5 for motor, which is characterized in that the magnetic shoe slot First straight line slot is connected with the second straight line slot.
9. a kind of motor characterized by comprising
Rotor core, the rotor core are according to the rotor core of any of claims 1-8 for motor;
Multiple magnetic shoes, the multiple magnetic shoe are placed in correspondingly in the first straight line slot in multiple magnetic shoe slots.
10. a kind of compressor, which is characterized in that including the rotor according to claim 1 to 8 for motor Iron core.
11. a kind of dish-washing machine, which is characterized in that including the rotor according to claim 1 to 8 for motor Iron core.
CN201611131404.XA 2016-12-09 2016-12-09 For the rotor core of motor, motor, compressor and dish-washing machine Active CN106849425B (en)

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Application Number Priority Date Filing Date Title
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CN107994698A (en) * 2017-11-08 2018-05-04 卧龙电气集团股份有限公司 A kind of 2 magnetic poles are without controller self-starting permanent magnetism assist in synchronization reluctance motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106033922A (en) * 2015-03-17 2016-10-19 珠海格力节能环保制冷技术研究中心有限公司 Permanent magnet motor

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JP3648921B2 (en) * 1997-05-27 2005-05-18 株式会社明電舎 Rotor structure of permanent magnet type synchronous rotating electric machine
KR101209631B1 (en) * 2011-05-19 2012-12-07 전자부품연구원 Rotor having different length and LSPM(Line-Start Permanent Magnet) motor comprising the rotor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106033922A (en) * 2015-03-17 2016-10-19 珠海格力节能环保制冷技术研究中心有限公司 Permanent magnet motor

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