CN107294244A - Rotor, magneto and compressor - Google Patents
Rotor, magneto and compressor Download PDFInfo
- Publication number
- CN107294244A CN107294244A CN201710626224.7A CN201710626224A CN107294244A CN 107294244 A CN107294244 A CN 107294244A CN 201710626224 A CN201710626224 A CN 201710626224A CN 107294244 A CN107294244 A CN 107294244A
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- China
- Prior art keywords
- slit
- rotor
- line
- holding tank
- magnetic pole
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention proposes a kind of rotor, magneto and compressor, wherein, outside magnetic pole piece is formed between the outside inwall of first holding tank of rotor and the side wall of corresponding rotor core, a plurality of first slit is opened up on each outside magnetic pole piece, a plurality of first slit respectively turns on two end faces of rotor, wherein, in outside magnetic pole piece on the section of rotary shaft, connection forms the first slit direction line between one end end points of each first slit and the end points of the other end, there is slit angle between any two in a plurality of slit direction line, at least one slit angle is more than or equal to 60 °.By technical scheme, air gap flux density sine degree is high, thus the energy conduction efficiency high of air-gap field, in zero load, reduces the torque of teeth groove, and in load, torque ripple is small, so as to reduce the tangential vibrations of compressor, and then reduces the noise of compressor.
Description
Technical field
The present invention relates to compressor field, in particular to a kind of rotor, a kind of magneto and a kind of compression
Machine.
Background technology
In correlation technique, motor inverter is mainly used in the frequency control of alternating current generator, frequency converter mainly using handing over-it is straight-
Friendship scheme, the power frequency supply of power network becomes fixed DC voltage by rectifier, is then made up of MOSFET or IGBT
SPWM high-frequency converters, voltage and changeable frequency are reverse into by DC voltage, and waveform is similar to the exchange output of sine wave, used
Stepless time adjustment is realized in driving AC induction motor, due to there is DC link, it is necessary to which the electrochemical capacitor for having Large Copacity will be whole
Voltage after stream filters into stable DC voltage, and electrochemical capacitor brings short life under high temperature, and loss is big and may set off an explosion,
The defects such as cost height.
The matrix form ac-ac frequency converter for removing no electrolytic capacitor belongs to motor power, by using two-way switch, each
Three-phase input alternating voltage is cut into one piece one piece by moment, is then combined into the three-phase alternating current of another frequency in output end as needed
Electricity supply motor operating, and the magneto of the transducer drive compressor of no electrolytic capacitor is used, the torque to magneto
The tangential index such as fluctuation has higher requirement.
The content of the invention
At least one in order to solve the above-mentioned technical problem, it is an object of the present invention to provide a kind of rotor.
It is another object of the present invention to provide a kind of magneto.
It is another object of the present invention to provide a kind of compressor.
To achieve these goals, the embodiment of first aspect present invention proposes a kind of rotor, with motor stator
It is equipped with, motor stator is connected to variable frequency drives, is rotated with being driven by variable frequency drives, without electricity in variable frequency drives
Electric capacity is solved, rotor includes opening up multiple first holding tanks, Duo Ge along the axial direction of rotary shaft on rotor core, rotor core
One holding tank is circumferentially distributed, the first holding tank filling permanent magnet, outside inwall and the corresponding rotor core of the first holding tank
Side wall between formed on outside magnetic pole piece, each outside magnetic pole piece and open up a plurality of first slit, a plurality of first slit makes respectively
Two end faces conducting of rotor, wherein, in outside magnetic pole piece on the section of rotary shaft, the one of each first slit
Connection has between forming any two in slit direction line, a plurality of slit direction line between end end points and the end points of the other end
Slit angle, at least one slit angle is more than or equal to 60 °.
In the technical scheme, by circumferentially disposed multiple first holding tanks, to fill permanent magnet, so that in permanent magnet
Both sides form outside magnetic pole piece and inner side magnetic pole piece respectively, and the region of magnetic pole piece in outside opens up a plurality of first slit vertically,
And two end faces of rotor are turned on, the end face of magnetic pole piece or the section (or end face) perpendicular to rotary shaft on the outside of one
Region, the first slit direction line is defined as by the line between two end points of the first slit, and by a plurality of slit direction line
Any two between have slit angle, at least one slit angle be more than or equal to 60 °, by without electrochemical capacitor
In variable frequency drives driving rotary course, due to setting with least two first slits for specifying angle, air gap flux density is sinusoidal
Degree is high, thus the energy conduction efficiency high of air-gap field, in zero load, reduces the torque of teeth groove, and in load, torque ripple is small,
So as to reduce the tangential vibrations of compressor, and then reduce the noise of compressor.
Wherein, have slit angle, i.e. slit angle can be by adjacent between any two in a plurality of slit direction line
Two slit direction lines formed, can also be formed by non-conterminous two slit direction lines.
There is the air gap, after motor stator and variable frequency drives conducting, between air between the stator and rotor of motor
Magnetic field is formed in gap, the intensity in magnetic field is referred to as air gap flux density, in permanent magnet motor system, because permanent magnet and grooved armature are unshakable in one's determination
Interaction, be inevitably generated cogging torque, cause torque ripple, cause vibration and noise, influence system control
Precision, motor can use " sine wave " principle on body construction, even if the air-gap field that rotor is produced presses sine wave
Distribution, while using the commutation function of sinusoidal form, can substantially reduce torque ripple, the reduction of torque ripple not only makes electricity
The precision of machine is improved, while also reducing startup voltage.
Specifically, carry rotor compressor by the transducer drive with no electrolytic capacitor, rotor by rotor core, forever
Magnet slot and the set of permanent magnets being arranged in permanent magnet trough are into the corresponding radial outside of each permanent magnet trough, i.e. outside magnetic pole
Portion, is provided with least 2 the first slits, by will be attached between one end of every first slit and the other end, and will be even
Line is defined as the first slit direction line, on same outside magnetic pole piece, has between any two in a plurality of slit direction line
There is slit angle, at least one slit angle α >=60 °.
As a kind of preferably set-up mode, permanent magnet is symmetrically circumferentially disposed relative to rotating shaft center, so that correspondence
Outside magnetic pole piece also to be symmetrically circumferentially disposed relative to rotating shaft center.
In addition, the rotor in above-described embodiment that the present invention is provided can also have following additional technical feature：
In the above-mentioned technical solutions, it is preferable that on each section, connect between the axle center of rotary shaft and the center of permanent magnet
Connect to form first axle, two adjacent the first slits are symmetrical arranged with respect to first axle.
In the technical scheme, on the section of each outside magnetic pole piece, shape between two adjacent the first slit end points
Into the first line, connection forms first axle between the midpoint of the first line and the axle center of rotary shaft, and two the first slits are set
It is symmetrical arranged for relative first axle, in rotor rotation process, the negative influence that two the first slits are produced can cancel each other,
Further lift the sine degree of air gap flux density.
In any of the above-described technical scheme, it is preferable that on each section, have between any point and axle center on permanent magnet
There is the second line, the second line stretches out has the first intersection point between the wall of side；There is week between two adjacent permanent magnets
To gap area, the 3rd line between any point and axle center in circular gap region, the 3rd line stretch out with side wall it
Between there is the second intersection point, wherein, the distance between axle center and first intersection point are more than the distance between axle center and second intersection point.
In the technical scheme, on each section or on the end face at two ends, any point on permanent magnet and axle center it
Between there is the second line, the second line stretches out has the first intersection point between the wall of side, has between two adjacent permanent magnets
There is the 3rd line between any point and the axle center in circular gap region, circular gap region, the 3rd line stretches out and side
There is the second intersection point, the distance between axle center and the first intersection point are more than the distance between axle center and second intersection point, i.e. axle between wall
The distance of the heart to any point on the corresponding first outer wall contour line of permanent magnet is more than axle center to outside permanent magnet both sides corresponding second
The distance of any point on wall contour line, and then make to be formed between the madial wall of the lateral wall of rotor and the stator of cooperation the gas such as not
Gap, and then air-gap reluctance distribution can be optimized, on the basis of the first slit direction wire clamp angle is limited, further lift air gap magnetic
Close sine degree, so as to reduce back-emf percent harmonic distortion and resistance of start square.
Specifically, the line for crossing axle center and permanent magnet can be set to d axles, the line crossed between axle center and adjacent permanent magnet is set
Be set on q axles, d axles axle center to the distance between lateral wall be L1, more than axle center on q axles to the distance between lateral wall L2, i.e.,
Rotor periphery uses non-cylindrical configurations.
In any of the above-described technical scheme, it is preferable that the side wall of rotor core is by periphery, circumferentially interval laying is more
Individual curved indentations are constructed to be formed, and each curved indentations are correspondingly arranged one by one with the 3rd line.
In the technical scheme, by the way that the side wall of rotor core is configured to show circumferentially-spaced to open up multiple songs in cylinder
Face groove, on the one hand, preparation method is simpler, on the other hand, also disclosure satisfy that axle center to the corresponding first outer wall wheel of permanent magnet
The distance of any point is more than axle center to the distance of any point on the corresponding second outer wall contour line in permanent magnet both sides on profile, so that
Optimization to the sine degree of air gap flux density reaches best effect.
Furthermore it is also possible to which the side wall profile of rotor core is configured to by being in be spaced symmetrical a plurality of opening along axle center
Inside circular arc, and be symmetricly set on the straight line of circular arc both sides, head and the tail connecting structure is formed, make the lateral wall of rotor with
Gap convergence Sine distribution between the madial wall of the motor stator of cooperation.
In any of the above-described technical scheme, it is preferable that the side wall of rotor core is configured to cylindrical-shaped structure.
In the technical scheme, by the way that the side wall of rotor core is configured into cylindrical-shaped structure, on the one hand, disclosure satisfy that
By the use demand of the transducer drive of no electrolytic capacitor, on the other hand, it is processed further with the lateral wall to rotor
Compared to different air gap schemes, prepare cost lower.
In any of the above-described technical scheme, it is preferable that opposing spaced apart is set between the first slit and corresponding first holding tank
Put.
In the technical scheme, by the way that opposing spaced apart between the first slit and corresponding first holding tank is set, full
On the premise of foot optimization air gap flux density, the preparation difficulty of the first slit can be reduced.
In any of the above-described technical scheme, it is preferable that the first slit extends to correspondence along the first slit direction line to inner side
The first holding tank at, with corresponding first holding tank connect set.
In the technical scheme, held by the way that the first slit is extended into corresponding first to inner side along the first slit direction line
Na Caochu, is set with being connected with corresponding first holding tank, in rotor rotation process, is conducive to further reducing torque ripple
It is dynamic.
It is symmetrical to be formed in any of the above-described technical scheme, it is preferable that the two ends of the first holding tank extend laterally respectively
The second holding tank；Rotor also includes：Symmetrically arranged second slit, is opened on the magnetic pole piece of outside, and correspond to respectively
Connected with the second holding tank, wherein, on section, shape is connected between one end end points of each second slit and the end points of the other end
Into the second slit direction line, the angle between two adjacent the second slit direction lines is more than or equal to 60 °.
In the technical scheme, by being symmetrical arranged the second slit, and between adjacent two the second slit direction lines
Angle be more than or equal to 60 °, further improve the sine degree of air gap flux density.
In any of the above-described technical scheme, it is preferable that the contour line of the first slit is connected by a plurality of straight line and/or curve head and the tail
Connect and enclose to be formed.
Specifically, the first slit can be the oblique slit of rectangle first or the slit of arc first, can also
Be combined by the slit of rectangle first with the slit of arc first, the slit of rectangle first is combined with the slit of rectangle first, arc
First slit combines to be formed with the slit of arc first.
In any of the above-described technical scheme, it is preferable that the two ends of each first holding tank extend laterally respectively, to be formed
Filling NULL in second holding tank, the second holding tank.
In the technical scheme, by filling NULL in the second holding tank, two be disposed adjacent can be reduced
Interference between permanent magnet.
The embodiment of second aspect of the present invention proposes a kind of magneto, including：Motor stator, is connected to frequency conversion drive
Device, variable frequency drives do not have electrochemical capacitor；Rotor as described in the embodiment of first aspect present invention, with motor stator
Coordinate assembling.
The embodiment of third aspect present invention proposes a kind of compressor, including described in the embodiment of second aspect of the present invention
Magneto.
Specifically, compressor according to an embodiment of the invention, in addition to：Cylinder, base bearing, supplementary bearing, piston and
The compression members such as bent axle.
The additional aspect and advantage of the present invention will become obvious in following description section, or pass through the practice of the present invention
Recognize.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 shows the structural representation of rotor according to an embodiment of the invention；
Fig. 2 shows the partial structural diagram of the rotor in Fig. 1；
Fig. 3 shows the partial structural diagram of rotor according to another embodiment of the invention；
Fig. 4 shows the partial structural diagram of rotor according to still a further embodiment；
Fig. 5 shows the partial structural diagram of rotor according to still another embodiment of the invention；
Fig. 6 shows the structural representation of magneto according to an embodiment of the invention；
Fig. 7 shows the load torque curve for carrying the magneto in Fig. 1 in the magneto and correlation technique of rotor
Contrast schematic diagram；
Fig. 8 shows the structural representation of compressor according to an embodiment of the invention.
Wherein, the corresponding relation in Fig. 1 to Fig. 6 and Fig. 8 between reference and component names is：
10 rotors, 102 rotor cores, 104 permanent magnets, 106 first slits, 108 second holding tanks, 110 second is narrow
Seam, 20 motor stators, 202 stator cores, 204 windings, 30 cylinders, 40 base bearings, 50 supplementary bearings, 60 pistons, 70 bent axles.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Referring to the rotor of Fig. 1 to Fig. 5 descriptions according to some embodiments of the invention.
Embodiment one：
As shown in figure 1, rotor 10 according to an embodiment of the invention, are equipped with, motor is fixed with motor stator 20
Son 20 is connected to variable frequency drives, is rotated with being driven by variable frequency drives, does not have electrochemical capacitor in variable frequency drives, and motor turns
Son 10 includes rotor core 102, opens up multiple first holding tanks along the axial direction of rotary shaft on rotor core 102, and multiple first hold
Groove of receiving is circumferentially distributed, the first holding tank filling permanent magnet 104, outside inwall and the corresponding rotor core of the first holding tank
Formed between 102 side wall on outside magnetic pole piece, each outside magnetic pole piece and open up a plurality of first slit 106, a plurality of first slit
106 respectively turn on two end faces of rotor 10, wherein, in outside magnetic pole piece on the section of rotary shaft, each
Connection is formed in slit direction line, a plurality of slit direction line between one end end points of first slit 106 and the end points of the other end
There is slit angle, at least one slit angle α >=60 ° between any two.
In this embodiment, by circumferentially disposed multiple first holding tanks, to fill permanent magnet 104, so that in permanent magnet
104 both sides form outside magnetic pole piece and inner side magnetic pole piece respectively, and the region of magnetic pole piece in outside opens up a plurality of first vertically
Slit 106, and two end faces of rotor 10 are turned on, in an end face for outside magnetic pole piece or cutting perpendicular to rotary shaft
Face (or end face) region, the first slit direction line is defined as by the line between two end points of the first slit 106, and will be a plurality of
There is slit angle, at least one slit angle is more than or equal to 60 °, by not having between any two in slit direction line
Have in the variable frequency drives driving rotary course of electrochemical capacitor, due to setting with least two first slits for specifying angle
106, air gap flux density sine degree is high, thus the energy conduction efficiency high of air-gap field, in zero load, reduces the torque of teeth groove,
Torque ripple is small during load, so as to reduce the tangential vibrations of compressor, and then reduces the noise of compressor.
Wherein, have slit angle, i.e. slit angle can be by adjacent between any two in a plurality of slit direction line
Two slit direction lines formed, can also be formed by non-conterminous two slit direction lines.
There is the air gap between the stator and rotor of motor, after motor stator 20 and variable frequency drives conducting, air
Magnetic field is formed in gap, the intensity in magnetic field is referred to as air gap flux density, in permanent magnet motor system, due to permanent magnet 104 and have groove electricity
The interaction of armature core, is inevitably generated cogging torque, causes torque ripple, causes vibration and noise, influences system
Control accuracy, motor on body construction can use " sine wave " principle, even if rotor 10 produce air-gap field
It is distributed by sine wave, while using the commutation function of sinusoidal form, torque ripple can be substantially reduced, the reduction of torque ripple
Not only it is improved the precision of motor, while also reducing startup voltage.
Specifically, the compressor of rotor is carried by the transducer drive with no electrolytic capacitor, and rotor is by rotor core
102nd, the groove of permanent magnet 104 and the permanent magnet 104 being arranged in the groove of permanent magnet 104 are constituted, in the corresponding footpath of each groove of permanent magnet 104
Laterally, i.e. outside magnetic pole piece, is provided with least 2 the first slits 106, by by one end of every first slit 106 with it is another
It is attached between one end, and is the first slit direction line by wire definition, on same outside magnetic pole piece, a plurality of slit side
There is slit angle, at least one slit angle α >=60 ° between any two into line.
Embodiment two：
As a kind of preferably set-up mode, permanent magnet 104 is symmetrically circumferentially disposed relative to rotating shaft center, so that right
The outside magnetic pole piece answered is also to be symmetrically circumferentially disposed relative to rotating shaft center.
In addition, the rotor 10 in above-described embodiment that the present invention is provided can also have following additional technical feature：
Embodiment three：
In the above embodiment, it is preferable that on each section, shape between the end points of adjacent two the first slits 106
Into the first line 108, connect to form first axle between the midpoint of the first line 108 and the axle center of rotary shaft, two first narrow
The relative first axle of seam 106 is symmetrical arranged.
In this embodiment, on the section of each outside magnetic pole piece, shape between two adjacent end points of the first slit 106
Into the first line 108, connection forms first axle between the midpoint of the first line 108 and the axle center of rotary shaft, first narrow by two
Seam 106 is set to relative first axle and is symmetrical arranged, in rotor rotation process, the negative influence that two the first slits 106 are produced
It can cancel each other, further the sine degree of lifting air gap flux density.
Example IV：
As shown in Fig. 2 in any of the above-described embodiment, it is preferable that on each section, any point on permanent magnet 104
There is the second line 110 between axle center, the second line 110 stretches out has the first intersection point between the wall of side；Adjacent two
There is the 3rd line 112 between any point and the axle center in circular gap region, circular gap region between individual permanent magnet 104,
3rd line 112 stretches out has the second intersection point between the wall of side, wherein, the distance between axle center and the first intersection point are more than axle
The distance between the heart and the second intersection point.
In this embodiment, on each section or on the end face at two ends, any point on permanent magnet 104 and axle center it
Between have the second line 110, the second line 110 stretch out between the wall of side have the first intersection point, two adjacent permanent magnets
There is the 3rd line 112, the 3rd line between any point and the axle center in circular gap region, circular gap region between 104
112 stretch out has the second intersection point between the wall of side, and the distance between axle center and the first intersection point are more than axle center and the second intersection point
The distance between, i.e., axle center is more than axle center to permanent magnetism to the distance of any point on the corresponding first outer wall contour line of permanent magnet 104
The distance of any point on the corresponding second outer wall contour line in the both sides of body 104, and then make the lateral wall and the stator of cooperation of rotor
Formed between madial wall and do not wait air gap, and then air-gap reluctance distribution can be optimized, limiting the base at the first slit direction wire clamp angle
On plinth, the sine degree of air gap flux density is further lifted, so as to reduce back-emf percent harmonic distortion and resistance of start square.
Specifically, it can will cross line of the axle center with permanent magnet 104 and be set to d axles, cross between axle center and adjacent permanent magnet 104
Line to be set on q axles, d axles axle center to the distance between lateral wall be L1, arrive the distance between lateral wall more than axle center on q axles
L2, the i.e. periphery of rotor 10 uses non-cylindrical configurations.
Embodiment five：
As shown in Fig. 2 in any of the above-described embodiment, it is preferable that the side wall of rotor core 102 is by circumferential in periphery
Interval lays multiple curved indentations and constructs to be formed, and each curved indentations are correspondingly arranged one by one with the 3rd line 112.
In this embodiment, by being configured to the side wall of rotor core 102 to show circumferentially-spaced to open up multiple in cylinder
Curved indentations, on the one hand, preparation method is simpler, on the other hand, also disclosure satisfy that axle center to outside permanent magnet 104 corresponding first
On wall contour line the distance of any point be more than axle center on the corresponding second outer wall contour line in the both sides of permanent magnet 104 any point away from
From so that the optimization to the sine degree of air gap flux density reaches best effect.
Embodiment six：
Furthermore it is also possible to which the side wall profile of rotor core 102 is configured to by symmetrical a plurality of in being spaced along axle center
The inside circular arc of opening, and the straight line of circular arc both sides is symmetricly set on, head and the tail connecting structure is formed, and makes the outer of rotor 10
Gap convergence Sine distribution between the madial wall of side wall and the motor stator of cooperation 20.
Embodiment seven：
As shown in figure 3, in any of the above-described embodiment, it is preferable that the side wall of rotor core 102 is configured to cylindric knot
Structure.
In this embodiment, by the way that the side wall of rotor core 102 is configured into cylindrical-shaped structure, on the one hand, Neng Gouman
The use demand of the sufficient transducer drive by no electrolytic capacitor, on the other hand, further adds with the lateral wall to rotor 10
Work obtains different air gap schemes and compared, and prepares cost lower.
Embodiment eight：
In any of the above-described embodiment, it is preferable that opposing spaced apart is set between the first slit 106 and corresponding first holding tank
Put.
In this embodiment, by the way that opposing spaced apart between the first slit 106 and corresponding first holding tank is set, full
On the premise of foot optimization air gap flux density, the preparation difficulty of the first slit 106 can be reduced.
Embodiment nine：
In any of the above-described embodiment, it is preferable that the first slit 106 extends to correspondence along the first slit direction line to inner side
The first holding tank at, with corresponding first holding tank connect set.
In this embodiment, by the way that the first slit 106 is extended into corresponding first along the first slit direction line to inner side
At holding tank, set with being connected with corresponding first holding tank, in rotor rotation process, be conducive to further reducing torque ripple
It is dynamic.
Embodiment ten：
As shown in figure 4, in any of the above-described embodiment, it is preferable that the two ends of the first holding tank extend laterally respectively, with
Form symmetrical second holding tank 108；Rotor 10 also includes：Symmetrically arranged second slit 110, is opened in outside magnetic pole
In portion, and respectively correspond to connected with the second holding tank 108, wherein, on section, one end end points of each second slit 110 and
The angle that connection is formed between the second slit direction line, two adjacent the second slit direction lines between the end points of the other end is more than
Or equal to 60 °.
In this embodiment, by being symmetrical arranged the second slit 110, and between adjacent two the second slit direction lines
Angle be more than or equal to 60 °, further improve the sine degree of air gap flux density.
As shown in figure 5, in any of the above-described embodiment, it is preferable that the contour line of the first slit 106 by a plurality of straight line and/
Or curve head and the tail connection encloses to be formed.
Specifically, the first slit 106 can be oblique the first slit of rectangle 106 or the slit of arc first
106 or combined by the first slit of rectangle 106 with the first slit of arc 106, the first slit of rectangle 106 with it is rectangular
The first slit of shape 106 is combined, and the first slit of arc 106 combines formation with the first slit of arc 106.
In addition, the second slit 110 can be oblique the second slit of rectangle 110 or the slit of arc second
110 or combined by the second slit of rectangle 110 with the second slit of arc 110, the second slit of rectangle 110 with it is rectangular
The second slit of shape 110 is combined, and the second slit of arc 110 combines formation with the second slit of arc 110.
In any of the above-described embodiment, it is preferable that the two ends of each first holding tank extend laterally respectively, to form
Filling NULL in two holding tanks 108, the second holding tank 108.
In this embodiment, by the filling NULL in the second holding tank 108, two be disposed adjacent can be reduced
Interference between permanent magnet 104.
As shown in fig. 6, magneto according to an embodiment of the invention, including：Motor stator 20, is connected to frequency conversion drive
Device, variable frequency drives do not have electrochemical capacitor；Rotor 10 as described in any of the above-described embodiment of the invention, with motor stator
20 coordinate assembling.
As shown in fig. 6, motor stator 20 includes stator core 202 and winding 204, with being arranged at opening for stator core 202
Winding in groove, by the way that the side wall profile of rotor core 102 is configured to by being in be spaced symmetrical a plurality of opening along axle center
Inside circular arc, and the straight line of circular arc both sides or the camber line caved inward are symmetricly set on, head and the tail connecting structure is formed, and makes electricity
Gap convergence Sine distribution between the madial wall of the lateral wall of machine rotor 10 and the motor stator 20 of cooperation, wherein, motor turns
Son 10 includes rotor core 102, the slit 106 of permanent magnet 104 and first.
As shown in fig. 7, the load torque curve synoptic diagram of correlation technique is contrasted using the rotor in embodiment 1, by
Actual verification is learnt, carries the magneto of rotor in embodiment 1, and contrast does not have the magneto of the slit limited,
Load torque fluctuation is decreased obviously, so as to advantageously reduce the tangential vibrations of compressor, reduces compressor noise.
As shown in figure 8, embodiments in accordance with the present invention compressor, including the magneto described in this hair above-described embodiment.
Specifically, compressor according to an embodiment of the invention, in addition to：Cylinder 30, base bearing 40, supplementary bearing 50, work
Fill in the compression member such as 60 and bent axle 70.
In the present invention, term " first ", " second ", " the 3rd " are only used for the purpose described, and it is not intended that indicating
Or imply relative importance；Term " multiple " then refers to two or more, unless otherwise clear and definite restriction.Term " installation ",
The term such as " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected or can
Dismounting connection, or be integrally connected；" connected " can be joined directly together, and can also be indirectly connected to by intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In description of the invention, it is to be understood that the instruction such as term " on ", " under ", "left", "right", "front", "rear"
Orientation or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplification is retouched
State, rather than indicate or imply that the device or unit of meaning there must be specific direction, with specific azimuth configuration and operation,
It is thus impossible to be interpreted as limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that combining the embodiment or specific features, structure, material or the feature of example description is contained at least one reality of the invention
Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with
Suitable mode is combined.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
1. a kind of rotor, is equipped with motor stator, the motor stator is connected to variable frequency drives, to be become by described
Do not have electrochemical capacitor in the driving rotation of frequency driver, the variable frequency drives, the rotor includes rotor core, described
Multiple first holding tanks are opened up along the axial direction of rotary shaft on rotor core, the multiple first holding tank is circumferentially distributed, described
First holding tank fills permanent magnet, it is characterised in that
Outside magnetic pole piece is formed between the outside inwall of first holding tank and the side wall of the corresponding rotor core, each
A plurality of first slit is opened up on the outside magnetic pole piece, a plurality of first slit makes two end faces of the rotor respectively
Conducting,
Wherein, in the outside magnetic pole piece on the section of the rotary shaft, one end end points of each first slit
It is connected to form slit direction line between the end points of the other end, has between any two in a plurality of slit direction line narrow
Angle is stitched, at least one described slit angle is more than or equal to 60 °.
2. rotor according to claim 1, it is characterised in that
On each section, connected between the center of the axle center of the rotary shaft and the permanent magnet to form first axle,
Two adjacent relatively described first axles of the first slit are symmetrical arranged.
3. rotor according to claim 1, it is characterised in that
On each section, there is the second line, described second between any point and the axle center on the permanent magnet
Line stretches out has the first intersection point between the side wall；
There is circular gap region between two adjacent permanent magnets, any point in the circular gap region with it is described
3rd line between axle center, the 3rd line stretches out has the second intersection point between the side wall,
Wherein, the distance between the axle center and first intersection point be more than between the axle center and second intersection point away from
From.
4. rotor according to claim 3, it is characterised in that
The side wall of the rotor core is formed by being constructed in the multiple curved indentations of periphery circumference interval laying, each song
Face groove is correspondingly arranged one by one with the 3rd line.
5. rotor according to claim 1, it is characterised in that
The side wall of the rotor core is configured to cylindrical-shaped structure.
6. the rotor according to right wants 4 or 5, it is characterised in that
Opposing spaced apart is set between first slit and corresponding first holding tank.
7. the rotor according to claim 4 or 5, it is characterised in that
First slit is extended at corresponding first holding tank along the first slit direction line to inner side, with it is right
First holding tank connection answered is set,
Wherein, on the section, each connection forms the between one end end points of second slit and the end points of the other end
Angle between two slit direction lines, two adjacent the second slit direction lines is more than or equal to 60 °.
8. the rotor according to claim 4 or 5, it is characterised in that
The two ends of first holding tank extend laterally respectively, to form symmetrical second holding tank；
The rotor also includes：
Symmetrically arranged second slit, is opened on the outside magnetic pole piece, and respectively correspond to connected with second holding tank.
9. rotor according to any one of claim 1 to 5, it is characterised in that
The contour line of first slit is enclosed and formed by a plurality of straight line and/or curve head and the tail connection.
10. a kind of magneto, it is characterised in that including：
Motor stator, is connected to variable frequency drives, and the variable frequency drives do not have electrochemical capacitor；
Rotor as claimed in any one of claims 1-9 wherein, coordinates with the variable frequency drive motors stator and assembles.
11. a kind of compressor, it is characterised in that including：
Magneto as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626224.7A CN107294244A (en) | 2017-07-27 | 2017-07-27 | Rotor, magneto and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626224.7A CN107294244A (en) | 2017-07-27 | 2017-07-27 | Rotor, magneto and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107294244A true CN107294244A (en) | 2017-10-24 |
Family
ID=60103466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710626224.7A Pending CN107294244A (en) | 2017-07-27 | 2017-07-27 | Rotor, magneto and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107294244A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707849A (en) * | 2019-11-01 | 2020-01-17 | 合肥新沪屏蔽泵有限公司 | Permanent magnet motor rotor, permanent magnet motor and bathtub pump |
| CN112436627A (en) * | 2019-08-26 | 2021-03-02 | 安徽美芝精密制造有限公司 | Rotor, motor, compressor and refrigeration plant |
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