CN207134898U - Rotor, magneto and compressor - Google Patents

Abstract

The utility model 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, on section of the outside magnetic pole piece perpendicular to 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 the technical solution of the utility model, air gap flux density sine degree is high, thus the energy conduction efficiency high of air-gap field, in zero load, the torque of teeth groove is reduced, torque ripple is small in load, so as to reduce the tangential vibrations of compressor, and then reduce the noise of compressor.

Description

Rotor, magneto and compressor

Technical field

Compressor field is the utility model is related to, in particular to a kind of rotor, a kind of magneto and one kind Compressor.

Background technology

In correlation technique, motor inverter is mainly used in the frequency control of alternating current generator, frequency converter mainly using hand over-it is straight- Friendship scheme, the power frequency supply of power network become fixed DC voltage by rectifier, are then made up of MOSFET or IGBT SPWM high-frequency converters, DC voltage is reverse into voltage and changeable frequency, waveform is similar to the exchange output of sine wave, used Stepless time adjustment is realized in driving AC induction motor, due to DC link be present, it is necessary to which the electrochemical capacitor for having Large Copacity will be whole Voltage after stream is filtered 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 of cost is high.

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.

Utility model content

At least one in order to solve the above-mentioned technical problem, a purpose of the present utility model is that providing a kind of motor turns Son.

Another purpose of the present utility model is to provide a kind of magneto.

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 a kind of rotor, with motor Stator is equipped with, and motor stator is connected to variable frequency drives, is rotated with being driven by variable frequency drives, is not had in variable frequency drives There is an electrochemical capacitor, rotor includes rotor core, and multiple first holding tanks are opened up along the axial direction of rotary shaft on rotor core, more Individual first holding tank is circumferentially distributed, the first holding tank filling permanent magnet, outside inwall and the corresponding rotor of the first holding tank Outside magnetic pole piece is formed between the side wall of iron core, a plurality of first slit, a plurality of first slit point are opened up on each outside magnetic pole piece Not turn on two end faces of rotor, wherein, on section of the outside magnetic pole piece perpendicular to rotary shaft, each first slit One end end points and the other end end points between connection form slit direction line, any in a plurality of slit direction line is between two With 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 as in permanent magnet Both sides form outside magnetic pole piece and inner side magnetic pole piece respectively, the region of magnetic pole piece in outside, open up a plurality of first slit vertically, And turn on two end faces of rotor, one outside magnetic pole piece end face or perpendicular to the section of rotary shaft (or end face) Region, the line between two end points of the first slit is defined as the first slit direction line, and by a plurality of slit direction line Any two between there is slit angle, at least one slit angle is more than or equal to 60 °, by without electrochemical capacitor It is sinusoidal with least two first slits for specifying angle, air gap flux density due to setting in variable frequency drives driving rotary course 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, there is slit angle between any two in a plurality of slit direction line, i.e. slit angle can be by adjacent Two slit direction lines formed, can also be formed by non-conterminous two slit direction lines.

There is the air gap, after motor stator turns on variable frequency drives, 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 the control of system Precision, motor can use " sine wave " principle on body construction, even if air-gap field caused by rotor presses sine wave Distribution, while using the commutation function of sinusoidal form, torque ripple can be substantially reduced, the reduction of torque ripple not only makes electricity The precision of machine is improved, while also reduces startup voltage.

Specifically, carry the compressor of rotor by the transducer drive with no electrolytic capacitor, rotor by rotor core, forever Magnet slot and the set of permanent magnets that is arranged in permanent magnet trough are into radial outside corresponding to each permanent magnet trough, i.e. outside magnetic pole Portion, at least 2 the first slits are provided with, 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 are 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 corresponding Outside magnetic pole piece also be relative to rotating shaft center it is symmetrically circumferentially disposed.

In addition, the rotor 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 on each section, connect between the axle center of rotary shaft and the center of permanent magnet Connect to form first axle, adjacent two 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 adjacent two the first slit end points Connected into the first line, between the midpoint of the first line and the axle center of rotary shaft and form first axle, two the first slits are set It is symmetrical arranged for relative first axle, in rotor rotation process, negative influence caused by two the first slits 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 side wall；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 the first intersection point are more than the distance between axle center and the second intersection point.

In the technical scheme, on each section or on the end face at both 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 side wall, has between adjacent two permanent magnets There is a circular gap region, the 3rd line between any point and axle center in 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 the second intersection point, i.e. axle between wall The distance of any point is more than outside second corresponding to axle center to permanent magnet both sides on the first outer wall contour line corresponding to the heart to permanent magnet 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 arranged to d axles, the line crossed between axle center and adjacent permanent magnet is set Be set to q axles, on 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 the first outer wall wheel corresponding to axle center to permanent magnet The distance of any point is more than the distance of any point on the second outer wall contour line corresponding to axle center to 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 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, with being processed further to the lateral wall of rotor Compared to different air gap schemes, it is lower to prepare cost.

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 correspondingly 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, set with being connected with corresponding first holding tank, in rotor rotation process, be advantageous to further reduce torque ripple It is dynamic.

In any of the above-described technical scheme, it is preferable that the both ends of the first holding tank extend laterally respectively, symmetrical to be formed The second holding tank；Rotor also includes：Symmetrically arranged second slit, it is opened on the magnetic pole piece of outside, and corresponds 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 adjacent two 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 combines 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 both ends of each first holding tank extend laterally respectively, to be formed Second holding tank, the interior filling NULL of 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 the utility model second aspect proposes a kind of magneto, including：Motor stator, it is connected to frequency conversion Driver, variable frequency drives do not have electrochemical capacitor；Rotor as described in the embodiment of the utility model first aspect, with Motor stator coordinates assembling.

The embodiment of the utility model third aspect proposes a kind of compressor, includes the reality of the utility model second aspect Apply the magneto described in example.

Specifically, according to the compressor of embodiment of the present utility model, in addition to：Cylinder, base bearing, supplementary bearing, piston And the compression member such as bent axle.

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 structural representation of the rotor according to one embodiment of the present utility model；

Fig. 2 shows the partial structural diagram of the rotor in Fig. 1；

Fig. 3 shows the partial structural diagram of the rotor according to another embodiment of the present utility model；

Fig. 4 shows the partial structural diagram of the rotor according to further embodiment of the present utility model；

Fig. 5 shows the partial structural diagram of the rotor according to another embodiment of the present utility model；

Fig. 6 shows the structural representation of the magneto according to one embodiment of the present utility model；

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 the compressor according to one embodiment of the present utility model.

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

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.

Rotor referring to Fig. 1 to Fig. 5 descriptions according to some embodiments of the utility model.

Embodiment one：

As shown in figure 1, according to the rotor 10 of embodiment of the present utility model, it is equipped with motor stator 20, electricity Machine stator 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, electricity Machine rotor 10 includes rotor core 102, and multiple first holding tanks, Duo Ge are opened up along the axial direction of rotary shaft on rotor core 102 One holding tank is circumferentially distributed, the first holding tank filling permanent magnet 104, the outside inwall of the first holding tank and corresponding rotor iron Outside magnetic pole piece is formed between the side wall of core 102, opens up a plurality of first slit 106 on each outside magnetic pole piece, a plurality of first is narrow Seam 106 respectively turns on two end faces of rotor 10, wherein, on section of the outside magnetic pole piece perpendicular to rotary shaft, often Connected between one end end points of individual first slit 106 and the end points of the other end and form slit direction line, in a plurality of slit direction line Any two between there are slit angle, at least one slit angle α >=60 °.

In this embodiment, by circumferentially disposed multiple first holding tanks, to fill permanent magnet 104, so as in permanent magnet 104 both sides form outside magnetic pole piece and inner side magnetic pole piece respectively, the region of magnetic pole piece in outside, open 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 line between two end points of the first slit 106 is defined as the first slit direction line, 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, there is slit angle between any two in a plurality of slit direction line, i.e. slit angle can be by adjacent Two slit direction lines formed, can also be formed by non-conterminous two slit direction lines.

There is the air gap, after motor stator 20 turns on variable frequency drives, 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, due to permanent magnet 104 and has groove electric The interaction of armature core, is inevitably generated cogging torque, causes torque ripple, causes vibration and noise, influences system Control accuracy, motor can use " sine wave " principle on body construction, even if air-gap field caused by rotor 10 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 reduces 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 form, in footpath corresponding to 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 are 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 also is symmetrically circumferentially disposed relative to rotating shaft center.

In addition, the rotor 10 in above-described embodiment provided by the utility model can also have following supplementary technology special Sign：

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 Connected into the first line 108, between the midpoint of the first line 108 and the axle center of rotary shaft to form first axle, 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 adjacent two end points of the first slit 106 Into the first line 108, between the midpoint of the first line 108 and the axle center of rotary shaft connection form first axle, it is first narrow by two Seam 106 is arranged to relative first axle and is symmetrical arranged, in rotor rotation process, negative influence caused by two the first slits 106 It can cancel each other, further lift the sine degree of 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 side wall；Adjacent two There is circular gap region between individual permanent magnet 104, the 3rd line 112 between any point and axle center in circular gap region, 3rd line 112 stretches out has the second intersection point between side wall, 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 both ends, any point on permanent magnet 104 and axle center it Between there is the second line 110, the second line 110 stretches out has the first intersection point between side wall, adjacent two permanent magnets There is circular gap region between 104, the 3rd line 112 between any point and axle center in circular gap region, the 3rd line 112 stretch out has the second intersection point between side wall, 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., the distance of any point is more than axle center to permanent magnetism on first outer wall contour line corresponding to axle center to permanent magnet 104 Corresponding to the both sides of body 104 on second outer wall contour line any point distance, and then make the lateral wall of rotor and the stator that coordinates 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 arranged to d axles, cross between axle center and adjacent permanent magnet 104 Line be arranged to q axles, axle center is L1 to the distance between lateral wall on d axles, and the distance between lateral wall is arrived more than axle center on q axles L2, the i.e. periphery of rotor 10 use 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 by the side wall of rotor core 102 be configured to cylinder show it is circumferentially-spaced open up it is multiple Curved indentations, on the one hand, preparation method is simpler, on the other hand, also disclosure satisfy that outside first corresponding to axle center to permanent magnet 104 On wall contour line the distance of any point be more than corresponding to axle center to the both sides of permanent magnet 104 on second outer wall contour line 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 the side wall profile of rotor core 102 is configured to by symmetrical a plurality of in being spaced along axle center Be open inside circular arc, and is symmetricly set on the straight line of circular arc both sides, and 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 it is lower to prepare cost.

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 correspondingly 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 advantageous to further reduce torque ripple It is dynamic.

Embodiment ten：

As shown in figure 4, in any of the above-described embodiment, it is preferable that the both 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, it 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 Connected between the end points of the other end and form the second slit direction line, the angle between adjacent two the second slit direction lines 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 combines, 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 combines, 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 both ends of each first holding tank extend laterally respectively, to form Two holding tanks 108,108 interior filling NULL of the second holding tank.

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, according to the magneto of embodiment of the present utility model, including：Motor stator 20, is connected to frequency conversion Driver, variable frequency drives do not have electrochemical capacitor；Rotor 10 as described in any of the above-described embodiment of the utility model, with Motor stator 20 coordinates 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 to cave 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, and so as to advantageously reduce the tangential vibrations of compressor, reduces compressor noise.

As shown in figure 8, according to embodiment compressor of the present utility model, including the Permanent Magnet and Electric described in this hair above-described embodiment Machine.

Specifically, according to the compressor of embodiment of the present utility model, in addition to：Cylinder 30, base bearing 40, supplementary bearing 50th, the compression member such as piston 60 and bent axle 70.

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 (11)

1. a kind of rotor, is equipped with motor stator, the motor stator is connected to variable frequency drives, with by the change The driving of frequency driver rotates, and does not have electrochemical capacitor in 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 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 2, it is characterised in that

On each section, there is the second line between any point and the axle center on the permanent magnet, described second 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 claim 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 extended to along the first slit direction line to inner side corresponding at first holding tank, 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 first slit and the end points of the other end One slit direction line, the angle between adjacent two the first slit direction lines are more than or equal to 60 °.

8. the rotor according to claim 4 or 5, it is characterised in that

The both ends of first holding tank extend laterally respectively, to form symmetrical second holding tank；

The rotor also includes：

Symmetrically arranged second slit, it is opened on the outside magnetic pole piece, and corresponds to connected with second holding tank respectively.

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.

A kind of 10. 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, coordinate with the variable frequency drive motors stator and assemble.

A kind of 11. compressor, it is characterised in that including：

Magneto as claimed in claim 10.