CN206790226U - Magnetize motor, rotor, permagnetic synchronous motor and compressor - Google Patents
Magnetize motor, rotor, permagnetic synchronous motor and compressor Download PDFInfo
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- CN206790226U CN206790226U CN201720445810.7U CN201720445810U CN206790226U CN 206790226 U CN206790226 U CN 206790226U CN 201720445810 U CN201720445810 U CN 201720445810U CN 206790226 U CN206790226 U CN 206790226U
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Abstract
Magnetized motor, rotor, permagnetic synchronous motor and compressor the utility model proposes one kind, wherein, the motor that magnetizes includes：Stator core, multiple teeth groove is opened up on the inwall of stator core, multiple teeth groove are circumferentially distributed, and respectively turn on two end faces of stator core, so as to form stator tooth between the adjacent teeth groove of any two, the distortion of at least one stator tooth relative stator iron core is set, to form helical teeth；The motor that magnetizes also includes：Stator winding, around being located on helical teeth, wherein, after stator core and magnet ring are arranged, stator winding makes magnet ring produce oblique pole corresponding with helical teeth by conducting electric current.By the technical solution of the utility model, with respectively by the mode of multiple pole assemblages to rotor core compared with, assembly method is simpler, and reliability is higher；Reduce and regarding magnet ring as the cogging torque during rotor magnetic pole of permagnetic synchronous motor, and then reduction load running torque pulse, motor noise and reduce vibration.
Description
Technical field
Compressor field is the utility model is related to, is magnetized motor, a kind of rotor, one kind in particular to one kind
Permagnetic synchronous motor and a kind of compressor.
Background technology
In correlation technique, as shown in figure 1, using permanent-magnet synchronous of the piecemeal interior permanent magnets 102 as magnetic field excitation source
Motor, rotor magnetic pole are straight groove structure, and the cogging torque of motor is big, and load running torque pulsation is big, and motor noise and vibration are big.
Using skewed-rotor, cogging torque, load back-emf harmonic content can be reduced, advantageously reduce motor noise and
Vibration, but the method that built-in structure is difficult with rotor continuous oblique pole is pulsed to reduce cogging torque and load torque.
Rotor core exterior surface is fixed on as permanent magnet using magnet ring, but it is real by the form of magnet ring in the prior art
Now oblique pole, realize relatively difficult.
Utility model content
In order to solve the above-mentioned technical problem at least one, a purpose of the present utility model is to provide one kind and magnetized electricity
Machine.
Another purpose of the present utility model is to provide a kind of rotor.
Another purpose of the present utility model is to provide a kind of permagnetic synchronous motor.
Another purpose of the present utility model is to provide a kind of compressor.
To achieve these goals, the embodiment of the utility model first aspect proposes one kind and magnetized motor, is applied to
Magnet ring is magnetized, the motor that magnetizes includes stator core, and multiple teeth groove are opened up on the inwall of stator core, and multiple teeth groove circumferentially divide
Cloth, and respectively turn on two end faces of stator core, so as to stator tooth is formed between the adjacent teeth groove of any two, its feature
It is, the distortion of at least one stator tooth relative stator iron core is set, and is included with forming the helical teeth motor that magnetizes：Stator around
Group, around being located on helical teeth, wherein, after stator core and magnet ring are arranged, stator winding produces magnet ring by conducting electric current
Raw oblique pole corresponding with helical teeth.
In the technical scheme, by the way that the distortion of at least one stator tooth relative stator iron core is set, with
When being magnetized to the magnet ring being set in stator core, the region relative with helical teeth forms oblique pole on magnet ring to be magnetized, so as to
The permanent magnetic ring with oblique pole is formed, in the permanent magnet pole using the permanent magnetic ring as rotor, realizes the oblique of magnet ring
Pole set, on the one hand, with respectively by the mode of multiple pole assemblages to rotor core compared with, assembly method is simpler, reliably
Property is higher；On the other hand, the magnet ring with optimal oblique polar angle degree can be generated, is reduced using magnet ring as permagnetic synchronous motor
Rotor magnetic pole when cogging torque, and then reduce load running torque pulse, motor noise and reduce vibration.
Specifically, magnetize, even if magnetisable material magnetization or making the magnet increase magnetic of magnetic deficiency, by being magnetized
Can carrying magnetic object (magnet ring to be magnetized) be placed in the magnetic field that the coil that electric current passes through is formed.Magnetizing direction can be divided into thickness
Degree magnetizes, radial magnetizing etc., wherein, the direction of magnetization of magnet steel outwardly or inwardly radiates along rotor radius during radial magnetizing, magnet steel
Circumferentially each point direction of magnetization equal length, by carrying out radial magnetizing to magnet ring, oblique polar diameter is obtained to permanent magnetic ring.
In addition, the motor that magnetizes in above-described embodiment provided by the utility model can also have following supplementary technology special
Sign：
In the above-mentioned technical solutions, it is preferable that stator core laminates generation by multiple ring-type punchings, and teeth groove is by ring-type punching
On the corresponding superposition of breach formed, wherein, by the way that multiple ring-type punchings order is rotated against into specified angle respectively, make at least one
Breach corresponding to group forms skewed slot, so that the both sides of skewed slot form helical teeth.
In the technical scheme, by the way that stator core is laminated into generation by multiple ring-type punchings, due to equal in ring-type punching
Open up it is jagged, when the position that breach opens up is identical, ring-type punching formed after laminating with axially in parallel teeth groove, and according to pre-
If oblique polar angle degree, by multiple ring-type punchings order rotate against specified angle deflection after punching press, you can formed reverse specify angle
The skewed slot of degree, so that when being magnetized to magnet ring, magnet ring region corresponding to the helical teeth between two skewed slots forms to reverse after magnetizing and specified
The oblique pole of angle, on the one hand, the oblique pole of torsion is formed by way of breach is rotated, it is easy to process, and can be according to need
Different skew modes is realized, to maximize the cogging torque for reducing motor.
Wherein, general 0.30~0.50 millimeters thick of ring-type punching, and surface coating insulated paint.
In any of the above-described technical scheme, it is preferable that when multiple helical teeth are evenly distributed, two helical teeth of arbitrary neighborhood
The upper opposite stator winding of winding current direction respectively, to generate N poles and S poles simultaneously in time domain, wherein, electric current is pulse
Electric current or DC current.
In the technical scheme, in the stator core circumferentially uniform helical teeth for the motor that magnetizes, by by the two of arbitrary neighborhood
The opposite stator winding of winding current direction is distinguished on individual helical teeth, when being powered, adjacent helical teeth forms N poles and S poles respectively, with
The magnetic field for magnetizing is produced, realizes that magnet ring magnetizes.
Specifically, the electric current that magnetizes can be pulse current or DC current, for pulse current when, by
Make adjacent winding coil in time domain while access reverse pulse current, coil can be made to produce of short duration ultrastrong magnetic field, make this
Hard magnetic material (magnet ring) permanent magnetization in magnetic field, for DC current when, by the direct current of constant current in coil, to produce
Stationary magnetic field, realization are magnetized.
In addition, when magnet ring magnetizes without rotor core, by being specially Halbach (Halbach sine table magnetic wave)
Magnetized mode, and realization is magnetized.
In any of the above-described technical scheme, it is preferable that magnet ring is neodymium iron boron part.
In the technical scheme, neodymium iron boron has high magnetic energy product and coercivity as a kind of of rare earth permanent-magnetic material.
The embodiment of the utility model second aspect proposes a kind of rotor, is equipped with motor stator, motor
Rotor includes rotating shaft and the rotor core being set in rotating shaft, it is characterised in that rotor also includes：At least one magnetic
Ring, along the axially stacking of rotating shaft and the outer surface of rotor core is sheathed on, wherein, there is oblique pole magnet ring at least one magnet ring,
The motor that magnetizes that oblique pole magnet ring is proposed by the embodiment of the utility model first aspect magnetizes generation.
In the technical scheme, by setting at least one magnet ring with oblique pole, as the permanent magnet in rotor,
It is set in vertically on rotor core, on the one hand, by using the mode to magnetize, oblique pole is set on the magnet ring of cylinder segmentation, with
The mode that multiple tiltedly poles are assembled to rotor core is compared respectively, assembly method is simpler, and reliability is higher；On the other hand,
It can be reduced by magnet ring of the generation with optimal oblique polar angle degree that magnetize in the rotor magnetic using magnet ring as permagnetic synchronous motor
Cogging torque during pole, and then reduce load running torque pulse, motor noise and reduce vibration.
In the above-mentioned technical solutions, it is preferable that rotating shaft includes load end and unsupported end, wherein, in the number of oblique pole magnet ring
Measure for one when, tiltedly extremely reverse to be formed to load end from unsupported end along the steering of rotor on oblique pole magnet ring.
In the technical scheme, magnet ring quantity be one when, by the steering along rotor from unsupported end to
Load end skew specified angle forms oblique pole magnet ring, because the magnetic pole close to load end is along motor direction of rotation skew, thus leans on
Electromagnetic torque caused by nearly load end face is bigger, and so as to reduce load torque pulsation, it is axially inclined to reduce rotor
Pendulum, reduce further noise and the vibration of motor.
Oblique pole magnet ring can be that the oblique pole of the identical specified angle of multiple skews is uniform continuously in a circumferential, or gap is equal
Cloth, can also be that oblique pole is uniform staggered with straight pole.
Preferably, when motor stator and rotor are respectively 96 pole of groove, the single tiltedly skew angle of pole magnet ring vertically
Spend for 20 °.
In any of the above-described technical scheme, it is preferable that rotor includes being superimposed multiple oblique poles of setting continuously in axial direction
Magnet ring, the circumferential uniform multiple oblique poles of any one oblique pole magnet ring, any one oblique pole skew specified angle, wherein, arbitrary neighborhood
Two oblique pole magnet rings between there is the first reference plane, and the oblique pole in two oblique pole magnet rings of arbitrary neighborhood is relative to first
Reference plane is symmetrical arranged.
In the technical scheme, by the way that rotor is arranged to include the different oblique pole magnet ring of multiple deviation angles, edge
Axially stacking setting, to realize continuous oblique pole, in addition, by the way that the contact surface between the adjacent oblique pole magnet ring of any two is used as
First reference plane, two oblique pole magnet rings of arbitrary neighborhood are made to be symmetrical arranged with respect to the first reference plane, on the one hand, continuous by setting
Oblique pole magnet ring, realizes step skewed pole function, so as to further weaken tooth ripple potential, each harmonic and cogging torque, the opposing party
Face, relative to built-in tiltedly pole set-up mode, permanent magnet is prepared by the way of multiple tiltedly pole magnet ring superpositions, preparation process is more
Convenient, control is more accurate.
Wherein, deviation angle includes offset direction and deviation angle angle value, the oblique pole magnet ring in diverse location, deviation angle
Value can be with identical, can also be different.
In any of the above-described technical scheme, it is preferable that specified angle sum is：Wherein, α is specified angle
Sum, a are the number of magnetic poles of oblique pole magnet ring, and b is the slot number of motor stator, and [a, b] is a, b least common multiple.
In the technical scheme, by setting specified angle sum, it can effectively suppress cogging torque pulsation, specifically,
Cogging torque is to be interacted by the magnetic field of permanent magnet of rotor with the teeth groove of stator core, in torque caused by circumferencial direction,
In variable speed drives, when torque frequency is consistent with the mechanical resonance frequency of stator or rotor, vibrates and make an uproar caused by cogging torque
Sound will be exaggerated, and the presence of cogging torque equally have impact on low-speed performance and position control of the motor in speed control system
High accuracy positioning in system processed, counter electromotive force ripple is produced by skewed-rotor, and oblique extremely caused winding counter electromotive force is just
Stringization will reduce electromagnetic torque ripple.
Therefore, the suitable tiltedly polar angle degree of selection can effectively suppress cogging torque pulsation, by test, each
When oblique pole deviation angle tiltedly on the magnet ring of pole is identical, when multiple magnet rings superpositions are set, the specified angle sum of skew is each oblique
The deviation angle sum of pole magnet ring.
For example when permanent magnet is two symmetrical tiltedly pole magnet rings, the slot number of number of magnetic poles and motor stator is respectively 6,
Then specified angle sum is 60 °, and turns to 30 ° of forward migration, and 30 ° of reserve migration along rotor respectively.
In any of the above-described technical scheme, it is preferable that rotor also includes：Straight pole magnet ring, it is oblique to be arranged at any two
Between the magnet ring of pole, wherein, the middle part of any one straight pole magnet ring has the second reference plane perpendicular to rotating shaft, is arranged at straight pole magnetic
Oblique pole on the oblique pole magnet ring of ring both sides is symmetrical arranged relative to the second reference plane.
In the technical scheme, by setting straight pole magnet ring between the oblique pole magnet ring of any two, have among straight pole magnet ring
There is the second reference plane perpendicular to rotating shaft, be symmetrical arranged the oblique pole on two oblique pole magnet rings in straight pole magnet ring both sides, from
It is further to reduce cogging torque and load torque pulsation and electromagnetic torque pulsation caused by making is cancelled out each other.
Specifically, permanent magnet can be that three ring axial magnetic superposition assemblings are formed.
Permanent magnet can also include multiple magnet rings, and multiple magnet rings include oblique pole magnet ring and straight pole magnet ring, and any one is straight
Pole magnet ring side sets two oblique pole magnet rings respectively, and the oblique pole of two oblique pole magnet rings is relative to the center reference of the straight pole magnet ring
Face is symmetrical.
In any of the above-described technical scheme, it is preferable that rotor core includes：The multiple electromagnetic steel plates set are superimposed, it is multiple
Multiple rivet pilot holes are correspondingly offered on electromagnetic steel plate, electromagnetic steel plate passes through multiple rivet pilot holes and rivets fixation group
Dress, wherein, multiple rivet holes are uniform around the shaft, and are set close to rotating shaft.
In the technical scheme, multiple electromagnetic steel plates are set by being superimposed, and multiple electromagnetic steel plates are laminated by riveting
Rotor core is generated, realizes the preparation of rotor core, and the rivet hole of multiple rivetings is evenly distributed, and close to rotating shaft
Set, make rotor core Mass Distribution more uniform, beat probability is reduced in rotation process.
The embodiment of the utility model third aspect proposes a kind of permagnetic synchronous motor, including：Motor stator, Yi Jiben
The rotor that any one embodiment of utility model second aspect proposes, coordinates with motor stator and assembles.
The embodiment of the utility model fourth aspect proposes a kind of compressor, includes the reality of the utility model third aspect
Apply the permagnetic synchronous motor of example proposition.
Additional aspect and advantage of the present utility model will become obvious in following description section, or new by this practicality
The practice of type is recognized.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 shows the electric machine structure schematic diagram of the pole of 9 groove 6 of built-in rotor structure in correlation technique；
Fig. 2 shows the structural representation of the motor stator of the motor that magnetizes according to one embodiment of the present utility model；
Fig. 3 shows the structural representation of the stator winding of the motor that magnetizes according to one embodiment of the present utility model；
Fig. 4 shows the stator winding winding displacement figure in Fig. 3；
Fig. 5 shows the structural representation of the ring-type punching of the motor stator in composition Fig. 3；
Fig. 6 shows the structural representation of the magnet ring including oblique pole according to one embodiment of the present utility model；
Fig. 7 shows the electric machine structure schematic diagram as permanent magnet using the magnet ring in Fig. 6；
Fig. 8 shows the electric machine structure being respectively adopted in Fig. 7 and the emulation cogging torque ripple using the electric machine structure in Fig. 1
Shape comparison diagram；
Fig. 9 shows the electric machine structure for the magnet ring being respectively adopted in Fig. 7 and the dummy load using the electric machine structure in Fig. 1
Electromagnetic torque comparison of wave shape figure；
Figure 10 shows the structural representation of the magnet ring including oblique pole according to another embodiment of the present utility model.
Embodiment
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting, this Shen
The feature in embodiment and embodiment please can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
New to be different from other modes described here using other to implement, therefore, the scope of protection of the utility model is simultaneously
Do not limited by following public specific embodiment.
The motor that magnetizes referring to Fig. 2 to Fig. 5 descriptions according to some embodiments of the utility model.
As shown in Fig. 2 to 5, according to the motor that magnetizes of embodiment of the present utility model, suitable for being magnetized to magnet ring, magnetize electricity
Machine includes stator core 20, and multiple teeth groove are opened up on the inwall of stator core 20, and multiple teeth groove are circumferentially distributed, and makes to determine respectively
Two end faces conducting of sub- iron core 20, so as to form stator tooth between the adjacent teeth groove of any two, it is characterised in that at least one
The distortion of individual stator tooth relative stator iron core 20 is set, and is included with forming the helical teeth motor that magnetizes：Stator winding, around being located at
On helical teeth, wherein, after stator core 20 and magnet ring are arranged, stator winding makes magnet ring generation and helical teeth by conducting electric current
Corresponding oblique pole.
In the technical scheme, by the way that at least one stator tooth (being formed by the skewed slot 202 of the stator tooth both sides) is relative
The distortion of stator core 20 is set, with when the magnet ring to being set in stator core 20 magnetizes, in magnetic to be magnetized
The region relative with helical teeth forms oblique pole on ring, so as to form the permanent magnetic ring with oblique pole, using the permanent magnetic ring as electricity
The permanent magnet pole of machine rotor, realize magnet ring oblique pole set, on the one hand, with respectively by multiple pole assemblages to rotor core
Mode compare, assembly method is simpler, and reliability is higher；On the other hand, can generate with optimal oblique polar angle degree
Magnet ring, reduce using magnet ring as the cogging torque during rotor magnetic pole of permagnetic synchronous motor, and then reduce load running torque
Pulse, motor noise simultaneously reduce vibration.
Specifically, magnetize, even if magnetisable material magnetization or making the magnet increase magnetic of magnetic deficiency, by being magnetized
Can carrying magnetic object (magnet ring to be magnetized) be placed in the magnetic field that the coil that electric current passes through is formed.Magnetizing direction can be divided into thickness
Degree magnetizes, radial magnetizing etc., wherein, the direction of magnetization of magnet steel outwardly or inwardly radiates along rotor radius during radial magnetizing, magnet steel
Circumferentially each point direction of magnetization equal length, by carrying out radial magnetizing to magnet ring, oblique polar diameter is obtained to permanent magnetic ring.
Preferably, multiple teeth groove are evenly distributed, and are set relative to the distortion of stator core 20.
In addition, the motor that magnetizes in above-described embodiment provided by the utility model can also have following supplementary technology special
Sign：
As shown in figures 2 and 5, in the above-mentioned technical solutions, it is preferable that stator core 20 is folded by multiple ring-type punchings 204
Pressure generation, teeth groove are formed by the corresponding superposition of breach 2042 in ring-type punching 204, wherein, by respectively by multiple ring-type punchings
204 orders rotate against specified angle, breach 2042 corresponding at least one set is formed skewed slot 202, so that the both sides of skewed slot 202
Form helical teeth.
In the technical scheme, by the way that stator core 20 is laminated into generation by multiple ring-type punchings 204, due to ring-type punching
Jagged 2042 are opened up on 204, when the position that breach 2042 opens up is identical, ring-type punching 204 is formed and axial direction after laminating
Parallel teeth groove, and according to default tiltedly polar angle degree, multiple orders of ring-type punching 204 are rotated against into specified angle deflection backlash
Pressure, you can the skewed slot 202 for reversing specified angle is formed, with when being magnetized to magnet ring, corresponding to the helical teeth between two skewed slots 202
Magnet ring region forms the oblique pole for reversing specified angle after magnetizing, on the one hand, torsion is formed by way of breach 2042 is rotated
Oblique pole, it is easy to process, and different skew modes can be realized as needed, reduce the teeth groove of motor to maximize and turn
Square.
Wherein, general 0.30~0.50 millimeters thick of ring-type punching 204, and surface coating insulated paint.
In any of the above-described technical scheme, it is preferable that when multiple helical teeth are evenly distributed, two helical teeth of arbitrary neighborhood
The upper opposite stator winding of winding current direction respectively, to generate N poles and S poles simultaneously in time domain, wherein, electric current is pulse electricity
Stream or DC current.
As shown in Figure 3 and Figure 4, in the technical scheme, in the circumferential uniform helical teeth of the stator core 20 for the motor that magnetizes, lead to
Cross on two helical teeth by arbitrary neighborhood and distinguish the opposite stator winding of winding current direction, including red wiring 302 and white
Wiring 304, when being powered, adjacent helical teeth forms N poles and S poles respectively, to produce the magnetic field for being used for magnetizing, realizes that magnet ring fills
Magnetic.
As Fig. 3 with as shown in figure 4, specifically, when the stator core for the motor that magnetizes has six grooves, for first group around
Group, electric current flow at 1, are flowed out at 2, according to left hand rule, it is N poles to determine the stator tooth, for second group of winding, electric current
Flow at 3, flowed out at 4, because current direction and first group are on the contrary, according to left hand rule, it is S poles to determine the stator tooth,
So that the magnetic pole of adjacent stator tooth is different.
The electric current that magnetizes can be pulse current or DC current, for pulse current when, by making in time domain
Adjacent winding coil accesses reverse pulse current simultaneously, and coil can be made to produce of short duration ultrastrong magnetic field, made in the magnetic field
Hard magnetic material (magnet ring) permanent magnetization, for DC current when, by the direct current of constant current in coil, to produce constant magnetic
, realization is magnetized.
In addition, when magnet ring magnetizes without rotor core, by being specially Halbach (Halbach sine table magnetic wave)
Magnetized mode, and realization is magnetized.
In any of the above-described technical scheme, it is preferable that magnet ring is neodymium iron boron part.
In the technical scheme, neodymium iron boron has high magnetic energy product and coercivity as a kind of of rare earth permanent-magnetic material.
Rotor referring to Fig. 6 to Figure 10 descriptions according to some embodiments of the utility model.
As shown in Fig. 6 to 10, according to the rotor of embodiment of the present utility model, it is equipped with motor stator, electricity
Machine rotor includes rotating shaft and the rotor core being set in rotating shaft, it is characterised in that rotor also includes：At least one magnetic
Ring, along the axially stacking of rotating shaft and the outer surface of rotor core is sheathed on, wherein, there is oblique pole magnet ring at least one magnet ring,
The motor that magnetizes that oblique pole magnet ring is proposed by the embodiment of the utility model first aspect magnetizes generation.
In the technical scheme, by setting at least one magnet ring with oblique pole, as the permanent magnet in rotor,
It is set in vertically on rotor core, on the one hand, by using the mode to magnetize, oblique pole is set on the magnet ring of cylinder segmentation, with
The mode that multiple tiltedly poles are assembled to rotor core is compared respectively, assembly method is simpler, and reliability is higher；On the other hand,
It can be reduced by magnet ring of the generation with optimal oblique polar angle degree that magnetize in the rotor magnetic using magnet ring as permagnetic synchronous motor
Cogging torque during pole, and then reduce load running torque pulse, motor noise and reduce vibration.
Embodiment one：
As shown in fig. 6, in the above-mentioned technical solutions, it is preferable that rotating shaft includes load end 6024 and unsupported end, wherein,
When the quantity of oblique pole magnet ring is one, the oblique pole 6022 on oblique pole magnet ring 602 is along the steering of rotor from unsupported end
Reverse to be formed to load end.
In the technical scheme, magnet ring quantity be one when, by the steering along rotor from unsupported end to
Load end skew specified angle forms oblique pole magnet ring 602, because the magnetic pole close to load end is along motor direction of rotation skew, thus
It is bigger close to electromagnetic torque caused by load end face, so as to reduce load torque pulsation, it is axially inclined to reduce rotor
Pendulum, reduce further noise and the vibration of motor.
Oblique pole magnet ring 602 can be that the oblique pole of the identical specified angle of multiple skews is uniform continuously in a circumferential, or
Gap is uniform, can also be that oblique pole is uniform staggered with straight pole.
Preferably, when motor stator and rotor are respectively 96 pole of groove, single tiltedly pole 602 skew vertically of magnet ring
Angle is 20 °.
As shown in figure 8, the cogging torque waveform of emulation, compared with the permagnetic synchronous motor in Fig. 1, under cogging torque pulsation
Drop 92%, during load running, load torque pulsation is effectively reduced, wherein, abscissa is the time, and ordinate is cogging torque
(unit mN.m).
As shown in figure 9, the load electromagnetic torque waveform of emulation, compared with the permagnetic synchronous motor in Fig. 1, load torque arteries and veins
It is dynamic to decline 93%, the rotor axial beat of unilateral support compressor electric motor can be effectively reduced, so as to reduce load noise, its
In, abscissa is the time, and ordinate is electromagnetic torque (unit N.m).
Embodiment two：
In any of the above-described technical scheme, it is preferable that rotor includes being superimposed multiple oblique poles of setting continuously in axial direction
Magnet ring, the circumferential uniform multiple oblique poles of any one oblique pole magnet ring, any one oblique pole skew specified angle, wherein, arbitrary neighborhood
Two oblique pole magnet rings between there is the first reference plane, and the oblique pole in two oblique pole magnet rings of arbitrary neighborhood is relative to first
Reference plane is symmetrical arranged.
In the technical scheme, by the way that rotor is arranged to include the different oblique pole magnet ring of multiple deviation angles, edge
Axially stacking setting, to realize continuous oblique pole, in addition, by the way that the contact surface between the adjacent oblique pole magnet ring of any two is used as
First reference plane, two oblique pole magnet rings of arbitrary neighborhood are made to be symmetrical arranged with respect to the first reference plane, on the one hand, continuous by setting
Oblique pole magnet ring, realizes step skewed pole function, so as to further weaken tooth ripple potential, each harmonic and cogging torque, the opposing party
Face, relative to built-in tiltedly pole set-up mode, permanent magnet is prepared by the way of multiple tiltedly pole magnet ring superpositions, preparation process is more
Convenient, control is more accurate.
Wherein, deviation angle includes offset direction and deviation angle angle value, the oblique pole magnet ring in diverse location, deviation angle
Value can be with identical, can also be different.
In any of the above-described technical scheme, it is preferable that specified angle sum is：Wherein, α is specified angle
Sum, a are the number of magnetic poles of oblique pole magnet ring, and b is the slot number of motor stator, and [a, b] is a, b least common multiple.
In the technical scheme, by setting specified angle sum, it can effectively suppress cogging torque pulsation, specifically,
Cogging torque is to be interacted by the magnetic field of permanent magnet of rotor with the teeth groove of stator core, in torque caused by circumferencial direction,
In variable speed drives, when torque frequency is consistent with the mechanical resonance frequency of stator or rotor, vibrates and make an uproar caused by cogging torque
Sound will be exaggerated, and the presence of cogging torque equally have impact on low-speed performance and position control of the motor in speed control system
High accuracy positioning in system processed, counter electromotive force ripple is produced by skewed-rotor, and oblique extremely caused winding counter electromotive force is just
Stringization will reduce electromagnetic torque ripple.
Therefore, suitable tiltedly polar angle degree is selected effectively to suppress cogging torque pulsation, by test, each oblique
When oblique pole deviation angle on the magnet ring of pole is identical, when multiple magnet ring superpositions are set, the specified angle sum of skew is each oblique pole
The deviation angle sum of magnet ring.
Embodiment three：
For example when permanent magnet is two symmetrical tiltedly pole magnet rings, the slot number of number of magnetic poles and motor stator is respectively 6,
Then specified angle sum is 60 °, and turns to 30 ° of forward migration, and 30 ° of reserve migration along rotor respectively.
In any of the above-described technical scheme, it is preferable that rotor also includes：Straight pole magnet ring, it is oblique to be arranged at any two
Between the magnet ring of pole, wherein, the middle part of any one straight pole magnet ring has the second reference plane perpendicular to rotating shaft, is arranged at straight pole magnetic
Oblique pole on the oblique pole magnet ring of ring both sides is symmetrical arranged relative to the second reference plane.
In the technical scheme, by setting straight pole magnet ring between the oblique pole magnet ring of any two, have among straight pole magnet ring
There is the second reference plane perpendicular to rotating shaft, be symmetrical arranged the oblique pole on two oblique pole magnet rings in straight pole magnet ring both sides, from
It is further to reduce cogging torque and load torque pulsation and electromagnetic torque pulsation caused by making is cancelled out each other.
Example IV：
As shown in Figure 10, specifically, permanent magnet can be that three ring axial magnetic superposition assemblings are formed.
Specifically, the oblique pole structure 604 of ring axial magnetic of three magnet rings is included, the ring of hypomere magnetic 6044 (close to load end 6042,
And turn to skew along rotor), stage casing magnet ring 6046 and epimere magnet ring 6048, stage casing magnet ring 6046 is straight pole magnet ring, hypomere magnetic
The oblique pole of 6044 rings and epimere magnet ring 6048 is symmetrical on the level reference of stage casing magnet ring 6046.Make the ring of hypomere magnetic 6044 with it is upper
Electromagnetic torque pulsation caused by section magnet ring 6048 is cancelled out each other, further to reduce cogging torque and load torque pulsation.
Embodiment five：
Permanent magnet can also include multiple magnet rings, and multiple magnet rings include oblique pole magnet ring and straight pole magnet ring, and any one is straight
Pole magnet ring side sets two oblique pole magnet rings respectively, and the oblique pole of two oblique pole magnet rings is relative to the center reference of the straight pole magnet ring
Face is symmetrical.
In any of the above-described technical scheme, it is preferable that rotor core includes：The multiple electromagnetic steel plates set are superimposed, it is multiple
Multiple rivet pilot holes are correspondingly offered on electromagnetic steel plate, electromagnetic steel plate passes through multiple rivet pilot holes and rivets fixation group
Dress, wherein, multiple rivet holes are uniform around the shaft, and are set close to rotating shaft.
In the technical scheme, multiple electromagnetic steel plates are set by being superimposed, and multiple electromagnetic steel plates are laminated by riveting
Rotor core is generated, realizes the preparation of rotor core, and the rivet hole of multiple rivetings is evenly distributed, and close to rotating shaft
Set, make rotor core Mass Distribution more uniform, beat probability is reduced in rotation process.
As shown in fig. 7, according to the permagnetic synchronous motor 60 of one embodiment of the present utility model, including：Motor stator
604, and rotor 602, coordinate with motor stator 604 and assemble.
Wherein, motor stator 604 includes stator core 6042 and winding 6044.
The embodiment of the utility model fourth aspect proposes a kind of compressor, includes the reality of the utility model third aspect
Apply the permagnetic synchronous motor of example proposition.
In the utility model, term " first ", " second ", " the 3rd " are only used for the purpose of description, and it is not intended that
Instruction implies relative importance；Term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term " peace
The term such as dress ", " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected, can also
It is to be detachably connected, or is integrally connected；" connected " can be joined directly together, and can also be indirectly connected by intermediary.It is right
For one of ordinary skill in the art, it can understand that specific in the utility model of above-mentioned term containing as the case may be
Justice.
In description of the present utility model, it is to be understood that term " on ", " under ", "left", "right", "front", "rear" etc. refer to
The orientation or position relationship shown be based on orientation shown in the drawings or position relationship, be for only for ease of description the utility model and
Simplify description, rather than the device or unit of instruction or hint meaning there must be specific direction, with specific azimuth configuration
And operation, it is thus impossible to be interpreted as to limitation of the present utility model.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that combining specific features, structure, material or feature that the embodiment or example describe is contained in of the present utility model at least one
In individual embodiment or example.In this manual, identical embodiment is not necessarily referring to the schematic representation of above-mentioned term
Or example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example
In combine in an appropriate manner.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, for this area
Technical staff for, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model,
Any modification, equivalent substitution and improvements made etc., should be included within the scope of protection of the utility model.
Claims (12)
- The motor 1. one kind magnetizes, suitable for being magnetized to magnet ring, the motor that magnetizes includes stator core, the stator core it is interior Multiple teeth groove are opened up on wall, the multiple teeth groove is circumferentially distributed, and respectively turns on two end faces of the stator core, with Make to form stator tooth between the adjacent teeth groove of any two, it is characterised in thatThe distortion of at least one relatively described stator core of the stator tooth is set, to form helical teeth；The motor that magnetizes includes：Stator winding, around being located on the helical teeth,Wherein, after the stator core and the magnet ring are arranged, the stator winding makes the magnet ring by conducting electric current Produce oblique pole corresponding with the helical teeth.
- 2. the motor according to claim 1 that magnetizes, it is characterised in thatThe stator core laminates generation by multiple ring-type punchings, and the teeth groove is superimposed by the breach in the ring-type punching is corresponding Formed,Wherein, by the way that the multiple ring-type punching order is rotated against into specified angle respectively, make described corresponding at least one set Breach forms skewed slot, so that the both sides of the skewed slot form the helical teeth.
- 3. the motor according to claim 2 that magnetizes, it is characterised in thatIt is opposite to distinguish when multiple helical teeth are evenly distributed, on two helical teeth of arbitrary neighborhood winding current direction The stator winding, to generate N poles and S poles simultaneously in time domain,Wherein, the electric current is pulse current or DC current.
- 4. the motor according to any one of claim 1 to 3 that magnetizes, it is characterised in thatThe magnet ring is neodymium iron boron part.
- 5. a kind of rotor, is equipped with motor stator, the rotor includes rotating shaft and is set in the rotating shaft On rotor core, it is characterised in that the rotor also includes：At least one magnet ring, along the axially stacking of the rotating shaft and it is sheathed on the outer surface of the rotor core,Wherein, at least one magnet ring includes oblique pole magnet ring, and the tiltedly pole magnet ring is by such as any one of Claims 1-4 The described motor that magnetizes magnetizes generation.
- 6. rotor according to claim 5, it is characterised in thatThe rotating shaft includes load end and unsupported end,Wherein, it is described tiltedly oblique extremely along the rotor on the magnet ring of pole when the quantity of the tiltedly pole magnet ring is one Steering is reversed to be formed from the unsupported end to the load end.
- 7. rotor according to claim 5, it is characterised in thatThe rotor includes the multiple tiltedly pole magnet rings set along the axially consecutive superposition, any one of oblique pole The circumferential uniform multiple oblique poles of magnet ring, any one of tiltedly pole skew specified angle,Wherein, there is the first reference plane between two of the arbitrary neighborhood tiltedly pole magnet rings, and described in two of arbitrary neighborhood The tiltedly pole in the magnet ring of oblique pole is symmetrical arranged relative to first reference plane.
- 8. rotor according to claim 7, it is characterised in that the specified angle sum is：Wherein, α is the specified angle sum, and a is the number of magnetic poles of the tiltedly pole magnet ring, and b is the slot number of the motor stator, [a, b] is a, b least common multiple.
- 9. rotor according to claim 7, it is characterised in that the rotor also includes：Straight pole magnet ring, is arranged between oblique pole magnet ring described in any two,Wherein, the middle part of any one of straight pole magnet ring has the second reference plane perpendicular to the rotating shaft, is arranged at described The oblique pole tiltedly on the magnet ring of pole of straight pole magnet ring both sides is symmetrical arranged relative to second reference plane.
- 10. the rotor according to any one of claim 5 to 9, it is characterised in that the rotor core includes：The multiple electromagnetic steel plates set are superimposed, multiple rivet pilot holes are correspondingly offered on the multiple electromagnetic steel plate, it is described more Individual electromagnetic steel plate is fixed by the multiple rivet pilot hole and rivets and assembled,Wherein, the multiple rivet hole is uniform around the rotating shaft, and is set close to the rotating shaft.
- A kind of 11. permagnetic synchronous motor, it is characterised in that including：Motor stator, andRotor as any one of claim 5 to 10, coordinate with the motor stator and assemble.
- 12. a kind of compressor, it is characterised in that including permagnetic synchronous motor as claimed in claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720445810.7U CN206790226U (en) | 2017-04-26 | 2017-04-26 | Magnetize motor, rotor, permagnetic synchronous motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720445810.7U CN206790226U (en) | 2017-04-26 | 2017-04-26 | Magnetize motor, rotor, permagnetic synchronous motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790226U true CN206790226U (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720445810.7U Active CN206790226U (en) | 2017-04-26 | 2017-04-26 | Magnetize motor, rotor, permagnetic synchronous motor and compressor |
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| CN (1) | CN206790226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877532A (en) * | 2017-04-26 | 2017-06-20 | 广东美芝制冷设备有限公司 | Magnetize motor, rotor, permagnetic synchronous motor and compressor |
-
2017
- 2017-04-26 CN CN201720445810.7U patent/CN206790226U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877532A (en) * | 2017-04-26 | 2017-06-20 | 广东美芝制冷设备有限公司 | Magnetize motor, rotor, permagnetic synchronous motor and compressor |
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