CN208986706U - Motor rotor, motor and compressor - Google Patents
Motor rotor, motor and compressor Download PDFInfo
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- CN208986706U CN208986706U CN201821784789.4U CN201821784789U CN208986706U CN 208986706 U CN208986706 U CN 208986706U CN 201821784789 U CN201821784789 U CN 201821784789U CN 208986706 U CN208986706 U CN 208986706U
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model provides a kind of motor rotor, motor and compressor, the motor rotor includes rotor core, the motor rotor is symmetrically distributed with multiple magnetic poles, the outer diameter of rotor core corresponding to each magnetic pole is axially symmetric structure, outer diameter in axially symmetric structure at first position is greater than the outer diameter at second position, second position further includes the transition part between first position, each magnetic pole includes magnet slot, magnet isolation tank and elongated slot, magnet slot is used for embedded fixed installation permanent magnet, magnet isolation tank is located at magnet slot close to the end of rotor core edge and is connected to magnet slot, magnet isolation tank is used to increase the magnetic resistance in magnetic circuit, elongated slot is located at the side of the magnet isolation tank, and it is located at magnet slot close to the side at rotor core edge, elongated slot is spaced apart with magnet isolation tank.Using scheme provided by the utility model, the sine of the counter potential waveform of motor can be improved, reduce cogging torque.
Description
Technical field
The utility model belongs to motor and Compressor Technology field, is related to a kind of motor rotor, motor and compression
Machine.
Background technique
Compressor is the core devices of the electric appliances such as air-conditioning, refrigerator, and compressor majority is driven by motor, is had
There is biggish energy input.As social progress and the continuous sternnessization of Energy situation, related industry are endeavoured more and more
In some energy-saving products of release.In recent years, DC frequency conversion technology oneself become refrigeration industry one of leading technology, together
When, permasyn morot also becomes the first choice of electric motor for compressor.
Permasyn morot is made of stator and rotor, and stator is affixed in compressor, and the rotor in compressor
With permanent magnet, the parts such as piston is driven to carry out the compression process of refrigerant using eccentric shaft design.In order to be conducive to rotor
Between formed sineization air-gap field, existing permanent magnet synchronous motor for compressor can be in the magnet slot and rotor diameter of rotor
Between setting multiple tracks slot (usual quantity be more than or equal to 4).This method can be effectively improved the magnetic field sine of motor, drop
Low gullet torque, but the design of multiple tracks fluting is equal to the width for reducing rotor magnetic circuit, so that in the flux density of rotor core
It rises, iron loss increases.
Therefore, it is necessary to a kind of in the case where not influencing the flux density and iron loss of rotor core, can improve the anti-of motor
The sine of potential waveform, the motor rotor for reducing cogging torque.
Utility model content
The purpose of this utility model is to provide a kind of motor rotor, motor and compressors, are not influencing rotor iron
In the case where the flux density and iron loss of core, the sine of the counter potential waveform of motor can be improved, reduce cogging torque.
To achieve the above object, the utility model provides a kind of motor rotor, and the motor rotor includes rotor
Iron core, the motor rotor are symmetrically distributed with multiple magnetic poles, and the outer diameter of rotor core corresponding to each magnetic pole is axis
Symmetrical structure, the axially symmetric structure include being located in the middle first position, the second position positioned at the first position two sides
And the third position on the outside of the second position, the outer diameter at the first position are greater than outer at the second position
Diameter, the second position further include the transition part between the first position；
Each magnetic pole includes magnet slot, magnet isolation tank and elongated slot, and the magnet slot is used for embedded fixed installation permanent magnetism
Body, the magnet isolation tank are located at the magnet slot close to the end of the rotor core edge and are connected to the magnet slot, institute
Magnet isolation tank is stated for increasing the magnetic resistance in magnetic circuit, the elongated slot is located at the side of the magnet isolation tank, and is located at the magnet slot
Close to the side at the rotor core edge, the elongated slot and the magnet isolation tank are spaced apart.
Optionally, the quantity of the elongated slot is 2.
Optionally, the transition part is straight line, fillet or chamfering.
Optionally, the corresponding fillet α of the first position meets following relationship:
0.25×180°/p≤α≤0.4×180°/p；
Wherein, p is the number of the magnetic pole.
Optionally, the corresponding fillet β of each second position fillet α corresponding with the first position meets with ShiShimonoseki
System:
0.9×α≤β≤1.1×α；
Wherein, the second position includes the interconnecting piece for being connected with the first position.
Optionally, outer diameter R1 of the rotor core at the first position corresponding to each magnetic pole and described the
Outer diameter R2 at two positions meets following relationship:
0.99×R1≤R2≤0.995×R1。
Optionally, the width t of the elongated slot meets following relationship:
0.03×w≤t≤0.06×w；
Wherein, w is the corresponding polar arc width of the magnetic pole.
Optionally, the shortest distance d between the elongated slot and the magnet isolation tank meets following relationship:
0.5×t≤d≤1.5×t。
Optionally, the angle theta between the vertical line of the symmetry axis of the elongated slot and the axially symmetric structure meets with ShiShimonoseki
System:
60°≤θ≤120°。
The utility model also provides a kind of motor, and including stator and above-mentioned motor rotor, the motor turns
Son is mounted in the stator by shaft to be rotated.
The utility model also provides a kind of compressor, including above-mentioned motor.
Compared with prior art, motor rotor provided by the utility model, by rotor core corresponding to each magnetic pole
Outer diameter be designed as axially symmetric structure, the outer diameter of the largest outside diameter at the intermediate position of axially symmetric structure, two sides is less than intermediate position
Outer diameter, while elongated slot is set in the two sides of magnetic pole, elongated slot is located at the side of magnet isolation tank and spaced apart with magnet isolation tank,
The design of air groove, the shadow of flux density and iron loss to rotor core are set in this configuration design of motor rotor and rotor
Sound is smaller, and the magnetic field that rotor can be made integrally to generate is more sinusoidal, and the air gap between motor rotor and stator is effectively reduced
Harmonic wave.
Motor provided by the utility model, due to the motor rotor using the utility model, it is thus possible to improve electricity
The sine of the counter potential waveform of motivation reduces cogging torque.
Compressor provided by the utility model, due to using the motor, performance is greatly improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of any magnetic pole for the motor rotor that an embodiment of the present invention provides；
Fig. 2 is the motor counter potential waveform comparison diagram of compressor provided by the utility model Yu existing compressor；
Fig. 3 is the motor cogging torque comparison diagram of compressor provided by the utility model Yu existing compressor.
Wherein, 1- rotor core；11- first position；12- second position；121- transition part；13- third position；2- magnetic
Pole；3- magnet slot；4- magnet isolation tank；5- elongated slot.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes a kind of motor rotor, motor and compression
Machine is described in further detail.According to claims and following explanation, will be become apparent from feature the advantages of the utility model.It needs
Illustrate, attached drawing is all made of very simplified form and using non-accurate ratio, only to convenient, lucidly auxiliary is said
The purpose of bright the utility model embodiment.The same or similar appended drawing reference represents the same or similar component in attached drawing.
Referring to FIG. 1, the utility model provides a kind of motor rotor, including rotor core 1, the motor rotor pair
Multiple magnetic poles 2 are distributed in title, and the outer diameter of rotor core 1 corresponding to each magnetic pole 2 is axially symmetric structure, the axial symmetry
Structure include be located in the middle first position 11, positioned at 11 two sides of first position second position 12 and be located at described the
The third position 13 in the outside of two position 12, the outer diameter at the first position 11 are greater than the outer diameter at the second position 12.It is excellent
Choosing, the third position is straight line.The second position 12 further includes the transition part 121 between the first position 11,
The transition part 121 can be straight line, fillet or chamfering.
Each magnetic pole 2 includes magnet slot 3, magnet isolation tank 4 and elongated slot 5, and the magnet slot 3 is used for embedded fixed installation
Permanent magnet, the magnet isolation tank 4 be located at the magnet slot 3 close to the end of 1 edge of rotor core and with the magnet slot 3
Connection, the magnet isolation tank 4 are used to increase the magnetic resistance in magnetic circuit, and the elongated slot 5 is located at the side of the magnet isolation tank 4, and is located at
For the magnet slot 3 close to the side at 1 edge of rotor core, the elongated slot 5 and the magnet isolation tank 4 are spaced apart.It is excellent
Choosing, the quantity of the elongated slot 5 is 2.
When the number of poles of motor rotor is p, angle shared by each magnetic pole 2 is 360 °/p.Permanent magnet can use neodymium
Iron boron or ferrite material.The utility model to the shape of magnet slot 3, magnet isolation tank 4 and elongated slot 5 without limitation.
Specifically, magnetic pole as shown in Figure 1, definition: the intermediate position in the symmetrical structure of magnetic pole 2 is first position 11,
The fillet that the numerical value of the outer diameter of first position 11 is R1, first position 11 is shared on the outer diameter of entire rotor core 1 is α, right
The two sides of first position 11 described in structure are referred to as second position 12, and the numerical value of the outer diameter of second position 12 is R2, every one second
The fillet shared on the outer diameter of entire rotor core 1 of position 12 is β.α is the corresponding angle of the corresponding circular arc of first position 11
Value, β are the corresponding circular arc of second position 12 and the corresponding angle value of transition part 121.
The corresponding fillet α of the first position 11 can satisfy following relationship: 0.25 × 360 °/p≤α≤0.4 × 360 °/
p；The corresponding fillet β of each second position 12 fillet α corresponding with the first position 11 can satisfy following relationship: 0.9 × α
≤β≤1.1×α。
Outer diameter R1 of the rotor core 1 corresponding to each magnetic pole 2 at the first position 11 with described second
Outer diameter R2 at position 12 can satisfy following relationship: 0.99 × R1≤R2≤0.995 × R1.
With continued reference to Fig. 1, it is provided with elongated slot 5 in the two sides of each magnetic pole 2, is defined: the corresponding polar arc of the magnetic pole 2
Width is w, and the width (specially along the width of the extending direction perpendicular to elongated slot 5) of elongated slot 5 is t, the elongated slot 5 with it is described every
The distance between magnetic slot 4 is d, and the angle between the vertical line of the symmetry axis of the elongated slot 5 and the axially symmetric structure is θ.
The width t of the elongated slot 5 can satisfy following relationship: 0.03 × w≤t≤0.06 × w；The elongated slot 5 with it is described
Shortest distance d between magnet isolation tank 4 can satisfy following relationship: 0.5 × t≤d≤1.5 × t；The elongated slot 5 and the axis pair
The angle theta between the vertical line of the symmetry axis of structure is claimed to can satisfy following relationship: 60 °≤θ≤120 °.
Rotor core 1 includes the identical rotor punching of shape, and by tinertoy or is welded to form by the rotor punching, and
It connects to form the motor rotor by other components of the fasteners such as rivet and motor rotor, the electricity of the utility model
Motivation rotor is placed in corresponding stator by shaft and is rotated, to form electric motor assembly.
The utility model also provides a kind of motor, and including stator and above-mentioned motor rotor, the motor turns
Son is mounted in the stator by shaft to be rotated.The motor is due to using the motor rotor, the anti-electricity of motor
The sine of gesture waveform is improved, cogging torque reduces.
The utility model also improves a kind of compressor, and including above-mentioned motor, the compressor is due to using the electricity
Motivation, thus performance greatly improves.
As shown in Figure 2 and Figure 3, compressor provided by the utility model, compared to existing compressor, motor it is anti-
The sine of potential waveform is more preferable, and cogging torque is also smaller.Obviously, when the motor applications are when compressor, can effectively change
The performance of kind compressor.
In conclusion the motor rotor of the utility model, the outer diameter of rotor core corresponding to each magnetic pole is designed
For axially symmetric structure, the largest outside diameter at the intermediate position of axially symmetric structure, the outer diameter of two sides is less than the outer diameter at intermediate position, simultaneously
Elongated slot is set in the two sides of magnetic pole, elongated slot is located at the side of magnet isolation tank and, motor rotor spaced apart with magnet isolation tank
This configuration design and rotor in be arranged air groove design, the influence to the flux density and iron loss of rotor core is smaller, and
And the magnetic field that rotor can be made integrally to generate is more sinusoidal, and the air gap harmonic wave between motor rotor and stator is effectively reduced.
The motor of the utility model, due to the motor rotor using the utility model, it is thus possible to improve motor
Counter potential waveform sine, reduce cogging torque.
The compressor of the utility model, due to using the motor, performance is greatly improved.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want
Seek the protection scope of book.
Claims (11)
1. a kind of motor rotor, which is characterized in that the motor rotor includes rotor core, and the motor rotor is symmetrical
Multiple magnetic poles are distributed with, the outer diameter of rotor core corresponding to each magnetic pole is axially symmetric structure, the axially symmetric structure
Including being located in the middle first position, positioned at the second position of the first position two sides and on the outside of the second position
Third position, the outer diameter at the first position is greater than the outer diameter at the second position, the second position further include with
Transition part between the first position；
Each magnetic pole includes magnet slot, magnet isolation tank and elongated slot, and the magnet slot is used for embedded fixed installation permanent magnet, institute
Magnet isolation tank is stated to be located at the magnet slot close to the end of the rotor core edge and be connected to the magnet slot, it is described every magnetic
Slot is used to increase the magnetic resistance in magnetic circuit, and the elongated slot is located at the side of the magnet isolation tank, and is located at the magnet slot close to institute
The side at rotor core edge is stated, the elongated slot and the magnet isolation tank are spaced apart.
2. motor rotor as described in claim 1, which is characterized in that the quantity of the elongated slot is 2.
3. motor rotor as described in claim 1, which is characterized in that the transition part is straight line, fillet or chamfering.
4. motor rotor as described in claim 1, which is characterized in that the corresponding fillet α of the first position meets following
Relationship:
0.25×180°/p≤α≤0.4×180°/p；
Wherein, p is the number of the magnetic pole.
5. motor rotor as claimed in claim 4, which is characterized in that the corresponding fillet β of each second position and institute
It states the corresponding fillet α of first position and meets following relationship:
0.9×α≤β≤1.1×α；
Wherein, the second position includes the interconnecting piece for being connected with the first position.
6. motor rotor as described in claim 1, which is characterized in that rotor core corresponding to each magnetic pole is in institute
It states the outer diameter R2 at outer diameter R1 and the second position at first position and meets following relationship:
0.99×R1≤R2≤0.995×R1。
7. motor rotor as described in claim 1, which is characterized in that the width t of the elongated slot meets following relationship:
0.03×w≤t≤0.06×w；
Wherein, w is the corresponding polar arc width of the magnetic pole.
8. motor rotor as claimed in claim 7, which is characterized in that the most short distance between the elongated slot and the magnet isolation tank
Meet following relationship from d:
0.5×t≤d≤1.5×t。
9. motor rotor as described in claim 1, which is characterized in that the symmetry axis of the elongated slot and the axially symmetric structure
Vertical line between angle theta meet following relationship:
60°≤θ≤120°。
10. a kind of motor, which is characterized in that including stator and motor rotor of any of claims 1-9,
The motor rotor is mounted in the stator by shaft and is rotated.
11. a kind of compressor, which is characterized in that including motor described in any one of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784789.4U CN208986706U (en) | 2018-10-31 | 2018-10-31 | Motor rotor, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821784789.4U CN208986706U (en) | 2018-10-31 | 2018-10-31 | Motor rotor, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208986706U true CN208986706U (en) | 2019-06-14 |
Family
ID=66789821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821784789.4U Active CN208986706U (en) | 2018-10-31 | 2018-10-31 | Motor rotor, motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208986706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021022922A1 (en) * | 2019-08-02 | 2021-02-11 | 珠海格力电器股份有限公司 | Rotor assembly and consequent pole motor |
-
2018
- 2018-10-31 CN CN201821784789.4U patent/CN208986706U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021022922A1 (en) * | 2019-08-02 | 2021-02-11 | 珠海格力电器股份有限公司 | Rotor assembly and consequent pole motor |
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