CN209562271U - Rotor, motor, compressor and air conditioner, vehicle - Google Patents

Abstract

The utility model provides a kind of rotor, motor, compressor, a kind of air conditioner and a kind of vehicle.Wherein, rotor includes: rotor core, and multiple magnet slots are provided on rotor core, and magnet slot is located at the side of rotor core；Permanent magnet, permanent magnet is set in magnet slot, and the cross-sectional profiles line of the permanent magnet of the side opposite with magnet slot includes that at least one section of straight line improves the dosage of permanent magnet according to rotor provided by the utility model to greatest extent, reduce copper loss, to improve electric efficiency, in addition, the permanent magnetism body thickness of rotor is not uniform, keep the torque pulsation of motor small, air gap flux density harmonic content reduces, and electric efficiency is further promoted, to realize the miniaturization of motor.

Description

Rotor, motor, compressor and air conditioner, vehicle

Technical field

The utility model relates to permanent magnet synchronous motor technical fields, in particular to a kind of rotor, a kind of motor, one Kind compressor, a kind of air conditioner and a kind of vehicle.

Background technique

The frequency conversion permanent magnet synchronous electric motor rotor magnet generallyd use in the related technology uses tile-type Surface Mount rotor structure, deposits Difficult to install in permanent magnet, mechanical strength is low after permanent magnet installation, is unable to satisfy high revolving speed service requirement, permanent magnetism body thickness is uniform Design, the torque pulsation of motor is big, and air gap flux density harmonic content is high, and motor iron loss and stray loss are big, electric efficiency decline.

Utility model content

The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.

For this purpose, the first aspect of the utility model proposes a kind of rotor.

The second aspect of the utility model proposes a kind of motor.

A kind of compressor is proposed in terms of the third of the utility model.

4th aspect of the utility model proposes a kind of air conditioner.

5th aspect of the utility model proposes a kind of vehicle.

In view of this, the present invention provides a kind of rotor, rotor includes: rotor core, is provided on rotor core Multiple magnet slots, magnet slot are located at the side of rotor core；Permanent magnet, permanent magnet are set in magnet slot, opposite with magnet slot Side permanent magnet cross-sectional profiles line include at least one section of straight line.

Rotor provided by the utility model includes rotor core and permanent magnet, and the side of rotor core is provided with multiple magnets Slot is provided with permanent magnet in magnet slot, and the cross-sectional profiles line of the permanent magnet of the side opposite with magnet slot includes at least one section Straight line.Rotor provided by the utility model, by the way that magnet slot is arranged to be used to be arranged permanent magnet, a side in the side of rotor core Face makes permanent magnet that the side of rotor core be arranged in, and then increases the use space of the cross section of rotor core；On the one hand, By being arranged permanent magnet in magnet slot, so that be bonded with rotor core even closer after permanent magnet installation, rotor is mechanical by force Degree is high, meets high revolving speed service requirement.Further, the contour line of the separate rotor core side of permanent magnet includes at least one section Straight line so that the thickness of permanent magnet is uneven, and then keeps the torque pulsation of motor small, and air gap flux density harmonic content reduces, electricity Machine iron loss and stray loss reduce, and electric efficiency is promoted, and improve motor noise.

It is maximum compared with the line-styled arrangement permanent magnet that current rotor uses according to rotor provided by the utility model The dosage for improving permanent magnet of limit reduces copper loss, to improve electric efficiency, realizes motor miniaturization；This is practical new The rotor that type provides has larger compared with " V " font that current rotor uses arranges permanent magnet, on the cross section of rotor core Space can utilize this spatial design rotor through flow hole, and rotor through flow area is big, realize under huge discharge compressor after motor miniaturization It is through-flow to meet big refrigerant；Rotor provided by the utility model is compared with current tile-type Surface Mount rotor structure, permanent magnet installation Even closer, rotor high mechanical strength is bonded with rotor core afterwards, meets high revolving speed service requirement, and the permanent magnet of rotor is thick Degree is not uniformly, to keep the torque pulsation of motor small, and air gap flux density harmonic content reduces, and motor iron loss and stray loss reduce, Electric efficiency is promoted, and motor torque ripple is small, improves motor noise.

In addition, can also have following supplementary technology according to the rotor in above-mentioned technical proposal provided by the utility model Feature:

In the above-mentioned technical solutions, it is preferable that at least one section of straight line and permanent magnet are located at the wheel of the cross section on the inside of magnet slot Profile is parallel.

In the technical scheme, parallel by the contour line that at least one section of straight line is set to magnet slot side, so that at least One section of straight line is located at the middle position of the outboard wheel profile of permanent magnet, on the one hand can reach the small preferable effect of torque pulsation Fruit；On the one hand convenient for assembly in assembling process, reach the manufacture requirement of rotor.

In any of the above-described technical solution, it is preferable that the length of at least one section straight line be L1, in magnet slot described in The width of permanent magnet is that the ratio of L2, the L1 and the L2 are more than or equal to 0.05, and are less than or equal to 0.7.

In the technical scheme, by the ratio being rationally arranged between straightway and the width of permanent magnet, to adjust rotor Torque pulsation, to reach optimal state, and then reduce motor iron loss and stray loss, promote electric efficiency, improve Motor noise.

In any of the above-described technical solution, it is preferable that permanent magnet towards magnet slot side be plane, opposite with plane one Face is convex surface, and the two sides of permanent magnet are plane；Wherein, the corresponding contour line in convex surface includes at least one section of straight line.

In the technical scheme, permanent magnet is bulge-structure, and the cross-sectional profiles line of permanent magnet includes be oppositely arranged two Organize straightway and two sections of camber lines, one end of one group of straightway in two groups of straightways and a straight line in another set straightway The both ends of section are separately connected, and the both ends of another straightway in another set straightway are connected with one end of two sections of camber lines, The other end of two sections of camber lines is connected with the other end of one group of straightway respectively.Specifically, the corresponding contour line in convex surface includes two Camber line and one section of straight line is held to keep the torque pulsation of motor small, air gap flux density by setting heterogeneous for the thickness of permanent magnet Harmonic content reduces, and motor iron loss and stray loss reduce, and electric efficiency is promoted, and motor torque ripple is small, improves motor noise.

In any of the above-described technical solution, it is preferable that permanent magnet portion is set in magnet slot, and permanent magnet is far from magnet Slot side protrudes from all side surfaces of rotor core.

In the technical scheme, by the way that magnet slot is arranged to be used to be arranged permanent magnet in the side of rotor core, increase forever Magnet dosage, and increase the use space of the cross section of rotor core；By by permanent magnet portion be arranged in magnet slot and Permanent magnet protrudes from all side external surfaces of rotor core, so that being bonded even closer, rotor with rotor core after permanent magnet installation High mechanical strength meets high revolving speed service requirement.

In any of the above-described technical solution, it is preferable that rotor further include: retention bead is set on rotor core, is located at Between two neighboring magnet slot.

In the technical scheme, by the way that retention bead is arranged between magnet slot two neighboring on rotor core, be conducive to Permanent magnet is installed to magnet slot, and is contacted by retention bead with permanent magnet, the connection area of permanent magnet is increased, Mechanical strength after further ensuring permanent magnet installation, and then the requirement of the high revolving speed operation of full rotor.

In any of the above-described technical solution, it is preferable that the geometric center of the raised end of retention bead to rotor core Distance is L3；Any point in the cross-sectional profiles line of the permanent magnet of the side opposite with magnet slot on retention bead side Tangent line to rotor core geometric center distance be L4, L3 and L4 meet: 0.5mm≤L4-L3≤3mm.

In the technical scheme, the dimensional parameters of retention bead and permanent magnet are reasonably set, it is met the above range It is required that enabling to q axis magnetic circuit reluctance big, reduce q axle inductance Lq, reduce interelectrode magnetic leakage, promotes motor operation efficiency.

In any of the above-described technical solution, it is preferable that rotor further include: centre bore is set on rotor core, centre bore For wearing the axis of motor；Rivet hole is set on rotor core；Through flow hole is set on rotor core.

In the technical scheme, centre bore, rivet hole and recirculation hole are provided on the rotor core of rotor, wherein center Hole is used to wear the axis of motor, and rivet hole is used for connection rivet, and recirculation hole circulates for refrigerant.Provided by the utility model turn Son, by the way that permanent magnet to be arranged in the side of rotor core, so that there is bigger usable area, in turn on rotor core The setting quantity that through flow hole can be increased, keeps rotor through flow area big, realizes and meets after motor miniaturization under huge discharge compressor Big refrigerant is through-flow.

In any of the above-described technical solution, it is preferable that through flow hole includes one layer of through flow hole and two layers of through flow hole；One layer through-flow Between adjacent rivet hole, the quantity of one layer of through flow hole is multiple in hole；Two layers of through flow hole are located at rotor core close to center Hole side, the quantity of two layers of through flow hole are multiple.

In the technical scheme, rotor core outer rim between rotor shaft hatch be equipped with two layers of through flow hole, wherein in adjacent riveting One layer of through flow hole is equipped between nail hole, two layers of through flow hole are arranged close to rotor bore, one layer of through flow hole and two layers of through flow hole Have multiple.Two layers of recirculation hole, which is arranged, reduces the weight of rotor, and through-flow hole area increases, and meets motor under huge discharge compressor It is through-flow to meet big refrigerant after miniaturization.

In any of the above-described technical solution, it is preferable that rivet hole is between adjacent magnet slot, rivet hole to permanent magnet Minimum range L5 and rivet hole to the minimum range L6 between two layers of through flow hole, meet: 1.2≤L5/L6≤3.

In the technical scheme, the minimum between adjacent pole, in the distance of rivet hole to permanent magnet is arranged in rivet hole Distance is L5, and the minimum range in the distance of rivet hole to two layers of through flow hole is L6, is met: 1.2≤L5/L6≤3.This set Mode can guarantee magnetic circuit demand, and magnetic circuit is unsaturated, influence minimum to magnetic circuit, can improve permanent magnet utilization Rate.

In any of the above-described technical solution, it is preferable that one layer of through flow hole is located at the geometric center and centre bore of permanent magnet On the line of geometric center；Two layers of through flow hole are located in the geometric center to the line of the geometric center of centre bore of rivet hole.

In the technical scheme, one layer of through flow hole is arranged on permanent magnet center to the axis of rotor bore line, energy Q axle inductance is enough reduced, while one layer of through-flow hole area is big；Two layers of through flow hole are arranged at rivet hole center to rotor bore line Axis on, be arranged in a staggered manner with one layer of through flow hole, increase flow area on the basis of, further guarantee rotor core machinery Intensity.

In any of the above-described technical solution, it is preferable that electromagnetic steel plate, electromagnetic steel plate is folded to be set as rotor core；Single electromagnetism The thickness of steel plate is less than or equal to 0.5mm.

In the technical scheme, rotor core is formed by multiple electromagnetic steel plates are stacked, for increasing axial electrical isolation, is reduced Electromagnetic steel plate is done the rotor core that slabbing is overlapped by eddy-current loss, reduces the path of vortex circulation and then has Effect ground reduces eddy-current loss；Further, the thickness for laminating the electromagnetic steel plate of rotor core is less than or equal to 0.5mm, so that turning The eddy-current loss of sub- iron core is smaller, promotes the operational efficiency of motor.

In any of the above-described technical solution, it is preferable that permanent magnet is labelled in magnet slot by gluing, and the bonding force of glue is greater than Equal to 27.6Mpa；Permanent magnet is rare-earth Nd-Fe-B magnet.

In the technical scheme, glue of the permanent magnet using bonding force greater than 27.6Mpa guarantees to turn in permanent magnet trough Mechanical strength when sub high revolving speed operation；The magnetism of rare-earth Nd-Fe-B magnet is higher, guarantees operation stability and the operation of motor Efficiency.

In any of the above-described technical solution, it is preferable that permanent magnet and the contact surface of magnet slot are rectangle.

In the technical scheme, the contact surface using rectangle as permanent magnet and magnet slot can increase permanent magnet and magnetic The contact area of body slot, compared with contact surface is circular arc, the machining accuracy of rectangular surfaces is higher than arc surface, makes permanent magnet and rotor iron Core contact is close, and gluing is uniform, and permanent magnet installation is more easier, and mechanical strength is higher after permanent magnet installation, can satisfy high turn Fast service requirement.

In any of the above-described technical solution, it is preferable that permanent magnet, rivet hole, through flow hole surround the geometry of rotor core Center be centrosymmetric formula arrangement.

In the technical scheme, the geometric center that permanent magnet, rivet hole, through flow hole surround rotor core is centrosymmetric Formula arrangement, can make the distribution of weight of rotor uniform, vibration and noise is not likely to produce when running at high speed.

The second aspect according to the present utility model provides a kind of motor, and motor includes: stator, and stator includes rotor Hole；And the rotor as described in any of the above-described technical solution, rotor are set in rotor hole.

According to motor provided by the utility model, the dosage of permanent magnet is improved to the maximum extent, reaches raising magnetic loading Purpose, realize the high power density of motor, magnetic loading promotion can reduce copper olse, to improve electric efficiency.It is logical It crosses and one layer of through flow hole and two layers of through flow hole is set on rotor core, reduce the weight of rotor, through-flow hole area increases, and meets Meet that big refrigerant is through-flow after motor miniaturization under huge discharge compressor, and rationally one layer of through flow hole of setting and two layers of through flow hole Position can guarantee magnetic circuit demand, and magnetic circuit is unsaturated, influence minimum to magnetic circuit, can improve permanent magnet utilization Rate.Further, by designing rotor core outer rim shape and size, so that the outer rim air gap uneven design of rotor core, Air gap flux density harmonic content is reduced to greatest extent, iron loss and stray loss is reduced, to improve electric efficiency.

In terms of third according to the present utility model, a kind of compressor is provided, including electricity described in above-mentioned technical proposal Machine.Therefore with whole beneficial effects of the motor, details are not described herein.

4th aspect according to the present utility model, provides a kind of air conditioner, including described in any of the above-described technical solution Compressor.Therefore with whole beneficial effects of compressor, details are not described herein.

5th aspect according to the present utility model, provides a kind of vehicle, including described in any of the above-described technical solution Compressor described in motor or any of the above-described technical solution.Therefore whole beneficial effects with the motor or compressor, herein It repeats no more.

The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this The practice of type is recognized.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is 12 slot, the 8 pole rotor structure schematic diagram of "-" type permanent magnet in the prior art；

Fig. 2 is 12 slot, the 8 pole rotor structure schematic diagram of V-shape permanent magnet in the prior art；

Fig. 3 is 12 slot, the 8 pole rotor structure schematic diagram of tile-type Surface Mount rotor in the prior art；

Fig. 4 is the slot number of one embodiment of the utility model with being combined into 12 slot, 8 pole motor rotor construction schematic diagram；

Fig. 5 is the slot number of one embodiment of the utility model with being combined into 12 slot, 8 pole motor stator structure schematic diagram；

Fig. 6 is the structural schematic diagram of the permanent magnet of an implementation of the utility model；

Fig. 7 is the structural schematic diagram of another permanent magnet implemented of the utility model；

Fig. 8 is the structural schematic diagram of another permanent magnet implemented of the utility model；

Fig. 9 be rotor shown in Fig. 4 of one embodiment of the utility model arrange in pairs or groups Fig. 5 stator motor and conventional example Fig. 1 The empty load of motor counter potential waveform comparison of collocation Fig. 5 stator；

Figure 10 be rotor shown in Fig. 4 of one embodiment of the utility model arrange in pairs or groups Fig. 5 stator motor and conventional example Fig. 3 The motor cogging torque comparison of wave shape of collocation Fig. 5 stator.

Wherein, corresponding relationship of the Fig. 4 into Fig. 8 between appended drawing reference and component names are as follows:

1 rotor, 102 rotor cores, 104 centre bores, 106 rivet holes, 108 magnet slots, 110 permanent magnets, 112 1 layers through-flow Hole, 114 2 layers of through flow hole, 116 retention beads, 2 stators, 202 stator cores, 204 stator tooths, 206 slot for windings, 208 stators around Group, 210 rotor holes.

Specific embodiment

In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

Many details are explained in the following description in order to fully understand the utility model, still, this is practical Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously It is not limited by the specific embodiments disclosed below.

Rotor 1, motor and compression according to the utility model some embodiments are described referring to Fig. 4 to Figure 10 Machine, air conditioner, vehicle.

One embodiment according to the present utility model, provides a kind of rotor 1, and rotor 1 includes: rotor core 102, rotor Multiple magnet slots 108 are provided on iron core 102, magnet slot 108 is located at the side of rotor core 102；Permanent magnet 110, permanent magnet 110 are set in magnet slot 108, and the cross-sectional profiles line of the permanent magnet 110 of the side opposite with magnet slot 108 includes at least one Section straight line.

As shown in figure 4, rotor 1 provided by the utility model includes rotor core 102 and permanent magnet 110, rotor core 102 Side be provided with multiple magnet slots 108, be provided with permanent magnet 110 in magnet slot 108, the side opposite with magnet slot 108 The cross-sectional profiles line of permanent magnet 110 includes at least one section of straight line.Rotor provided by the utility model, by rotor core Magnet slot 108 is arranged to be used to that permanent magnet 110 to be arranged in side, on the one hand makes permanent magnet 110 that the side of rotor core be arranged in, And then increase the use space of the cross section of rotor core；On the one hand, by being arranged permanent magnet 110 in magnet slot 108, So that permanent magnet 110 is bonded even closer, rotor high mechanical strength with rotor core after installing, meet high revolving speed service requirement. Further, the contour line of the separate rotor core side of permanent magnet 110 includes at least one section of straight line, so that permanent magnet 110 Thickness is uneven, and then keeps the torque pulsation of motor small, and air gap flux density harmonic content reduces, motor iron loss and stray loss drop Low, electric efficiency is promoted, and improves motor noise.

According to rotor 1 provided by the utility model, permanent magnet phase is arranged with the line-styled that rotor in current Fig. 1 uses Than improving the dosage of permanent magnet 110 to greatest extent, reducing copper loss, to improve electric efficiency, realize that motor is small-sized Change；Rotor 1 provided by the utility model in current Fig. 2 rotor use " V " font arrangement permanent magnet compared with, rotor core There is larger space on cross section, this spatial design rotor through flow hole can be utilized, 1 flow area of rotor is big, realizes huge discharge pressure It is through-flow to meet big refrigerant after motor miniaturization under contracting machine；Tile-type Surface Mount in rotor 1 and current Fig. 3 provided by the utility model Rotor structure is compared, and permanent magnet 110 is bonded even closer, 1 high mechanical strength of rotor with rotor core 102 after installing, and is met high Revolving speed service requirement, and 110 thickness of permanent magnet of rotor 1 is not uniformly, to keep the torque pulsation of motor small, air gap flux density is humorous Wave content reduces, and motor iron loss and stray loss reduce, and electric efficiency is promoted, and motor torque ripple is small, improves motor noise.

In one embodiment of the utility model, it is preferable that at least one section of straight line and permanent magnet 110 are located at magnet slot The cross-sectional profiles line of 108 insides is parallel.

In this embodiment, parallel by the contour line that at least one section of straight line is set to 108 side of magnet slot, so that at least One section of straight line is located at the middle position of the outboard wheel profile of permanent magnet 110, on the one hand can reach small preferable of torque pulsation Effect；On the one hand convenient for assembly in assembling process, reach the manufacture requirement of rotor.

In one embodiment of the utility model, it is preferable that the length of at least one section straight line is L1, is located at magnet slot The width of the permanent magnet 110 in 108 is that the ratio of L2, the L1 and the L2 are more than or equal to 0.05, and are less than or equal to 0.7。

In this embodiment, by the ratio being rationally arranged between straightway and the width of permanent magnet 110, to adjust rotor 1 torque pulsation to reach optimal state, and then reduces motor iron loss and stray loss, promotes electric efficiency, improves Motor noise.

In one embodiment of the utility model, it is preferable that permanent magnet 110 towards 108 side of magnet slot be plane, with The opposite one side of plane is convex surface, and the two sides of permanent magnet 110 are plane；Wherein, the corresponding contour line in convex surface includes at least one Section straight line.

In this embodiment, permanent magnet 110 is bulge-structure, and the cross-sectional profiles line of permanent magnet 110 includes being oppositely arranged Two groups of straightways and two sections of camber lines, one end of one group of straightway in two groups of straightways and one in another set straightway The both ends of straightway are separately connected, and the both ends of another straightway in another set straightway are connected with one end of two sections of camber lines It connects, the other end of two sections of camber lines is connected with the other end of one group of straightway respectively.Specifically, the corresponding contour line in convex surface includes Both ends camber line and one section of straight line keep the torque pulsation of motor small, gas by setting heterogeneous for the thickness of permanent magnet 110 Gap flux density harmonic content reduces, and motor iron loss and stray loss reduce, and electric efficiency is promoted, and motor torque ripple is small, improves electricity Machine noise.

In one embodiment of the utility model, it is preferable that 110 part of permanent magnet is set in magnet slot 108, and forever Magnet 110 protrudes from all side surfaces of rotor core 102 far from 108 side of magnet slot.

In this embodiment, by the side of rotor core 102 be arranged magnet slot 108 to be used to be arranged permanent magnet 110, Increase by 110 dosage of permanent magnet, and increases the use space of the cross section of rotor core 102；By the way that the setting of permanent magnet 110 is existed In magnet slot 108 and permanent magnet 110 protrudes from all side external surfaces of rotor core 102 so that permanent magnet 110 install after with rotor Iron core 102 is bonded even closer, and 1 high mechanical strength of rotor meets high revolving speed service requirement.

In specific embodiment, as shown in Figure 6 to 8, the structure of permanent magnet 110 can there are many, as shown in fig. 6, magnet Slot 108 is rectangular channel, and the part that permanent magnet 110 is connected with magnet slot 108 matches with rectangular channel, and permanent magnet 110 is far from magnetic The side of body slot 108 is that the both ends of contour line are camber line structure.As shown in fig. 7, the cross-sectional shape of permanent magnet 110 is pentagon Structure, wherein the adjacent both sides of permanent magnet 110 are set in magnet slot 108, and corresponding magnet slot 108 is with the recessed of two sides Slot structure, its excess-three side of permanent magnet 110 protrude from the outer surface of rotor core 102.As shown in figure 8, permanent magnet 110 is transversal Face shape is that the notch that a camber line and the straight line being connected with camber line are constituted is round, and wherein arcuate portion is set to magnet slot In 108, straight line portion is located at the opposite face of magnet slot 108, and 108 structure of magnet slot is curved groove structure.

In one embodiment of the utility model, it is preferable that as shown in figure 4, rotor 1 further include: retention bead 116, It is set on rotor core 102, between two magnet slots 108 of adjacent pole.

In this embodiment, by the way that retention bead 116 is arranged between magnet slot 108 two neighboring on rotor core 102, Be conducive to permanent magnet 110 is installed to magnet slot 108, and contacted by retention bead 116 with permanent magnet 110, is increased The connection area of permanent magnet 110 further ensures the mechanical strength after permanent magnet 110 is installed, and then full rotor high revolving speed The requirement of operation.

In one embodiment of the utility model, it is preferable that the raised end of retention bead 116 to rotor core 102 Geometric center distance be L3；Close to limit in the cross-sectional profiles line of the permanent magnet 110 of the side opposite with magnet slot 108 The distance of geometric center of the tangent line of any point on raised 116 sides to rotor core 102 is L4, L3 and L4 satisfaction: 0.5mm ≤L4-L3≤3mm。

In this embodiment, the raised end of the side positioned at rotor core 102 of retention bead 116 is to rotor core The distance of 102 geometric center is L3, and contour line of the permanent magnet far from 108 side of magnet slot is on 116 one end of retention bead The distance of tangent line to geometric center of any point be L4, the through reasonable settings size of retention bead 116 and permanent magnet 110 Parameter makes it meet 0.5mm≤L4-L3≤3mm, enables to q axis magnetic circuit reluctance big, reduces q axle inductance Lq, reduces interpolar leakage Magnetic promotes motor operation efficiency.

In specific embodiment, as shown in figure 4, L4 can for permanent magnet 110 at 110 interpolar of permanent magnet points outside to rotor The distance at 1 center.

In the particular embodiment, as shown in figure 4,1110 outer surface of permanent magnet is by three sections of rectilinear(-al) L1=6.1mm；L2 =20mm, then L1/L2=0.31, reduces air gap flux density harmonic content to greatest extent, reduces iron loss and stray loss, reduces and turns Square pulsation, improves electric efficiency；The advantageous permanent magnet 110 of retention bead 116 of permanent magnet 110 is installed, L3=29mm, L4= 30mm, then L4-L3=1mm reduces q axle inductance Lq so that q axis magnetic circuit reluctance is big, reduces interelectrode magnetic leakage.

In one embodiment of the utility model, it is preferable that as shown in figure 4, rotor 1 further include: centre bore 104, if It is placed on rotor core 102, centre bore 104 is used to wear the axis of motor；Rivet hole 106 is set on rotor core 102；It is logical Discharge orifice is set on rotor core 102.

In this embodiment, it is provided with centre bore 104, rivet hole 106 and recirculation hole on the rotor core 102 of rotor 1, In, centre bore 104 is used to wear the axis of motor, and rivet hole 106 is used for connection rivet, and recirculation hole circulates for refrigerant.This is practical The rotor 1 of novel offer, by the way that permanent magnet 110 to be arranged in the side of rotor core 102, so that on rotor core 102 With bigger usable area, and then the setting quantity of through flow hole can be increased, keep the flow area of rotor 1 big, realize big row It is through-flow to meet big refrigerant after motor miniaturization under capacity compressor.

In one embodiment of the utility model, it is preferable that as shown in figure 4, through flow hole includes one layer of 112 He of through flow hole Two layers of through flow hole 114；For one layer of through flow hole 112 between adjacent rivet hole 106, the quantity of one layer of through flow hole 112 is multiple； Two layers of through flow hole 114 are located at rotor core 102 close to 104 side of centre bore, and the quantity of two layers of through flow hole 114 is multiple.

In this embodiment, 102 outer rim of rotor core between rotor shaft hatch be equipped with two layers of through flow hole, wherein adjacent One layer of through flow hole 112 is equipped between rivet hole 106, two layers of through flow hole 114 are arranged close to rotor bore 104, one layer of through flow hole 112 and two layers of through flow hole 114 have it is multiple.Two layers of recirculation hole, which is arranged, reduces the weight of rotor 1, and through-flow hole area increases, Meet under huge discharge compressor that meet big refrigerant after motor miniaturization through-flow.

In one embodiment of the utility model, it is preferable that as shown in figure 4, rivet hole 106 is located at adjacent magnet slot Minimum between 108, between 106 to two layers of through flow hole of minimum range L5 and rivet hole 114 of rivet hole 106 to permanent magnet 110 Distance L6 meets: 1.2≤L5/L6≤3.

In this embodiment, rivet hole 106 is arranged between adjacent pole, in the distance of rivet hole 106 to permanent magnet 110 Minimum range be L5, the minimum range in the distance of 106 to two layers of through flow hole of rivet hole 114 is L6, is met: 1.2≤L5/L6 ≤3.This setup can guarantee 110 magnetic circuit demand of permanent magnet, and magnetic circuit is unsaturated, influence minimum to 110 magnetic circuit of permanent magnet, 110 utilization rate of permanent magnet can be improved.

In this specific embodiment, L5=5.1mm；L6=2.8mm, then L5/L6=1.8, guarantees that 110 magnetic circuit of permanent magnet needs It asks, the flux density between rivet hole 106 and permanent magnet 110 is 1.2T, and magnetic circuit is unsaturated, influences minimum to 110 magnetic circuit of permanent magnet, mentions High 110 utilization rate of permanent magnet.

In one embodiment of the utility model, it is preferable that as shown in figure 4, one layer of through flow hole 112 is located at permanent magnet On the line of 110 geometric center and the geometric center of centre bore 104；Two layers of through flow hole 114 are located in the geometry of rivet hole 106 On the heart to the line of the geometric center of centre bore 104.

In this embodiment, one layer of through flow hole 112 be arranged in 110 center of permanent magnet to 104 line of rotor bore axis On line, q axle inductance can reduce, while one layer of 112 area of through flow hole is big, two layers of through flow hole 114 are arranged at 106 center of rivet hole It onto the axis of 104 line of rotor bore, is arranged in a staggered manner with one layer of through flow hole 112, on the basis of increasing flow area, into one Step ground guarantees the mechanical strength of rotor core 102.

In one embodiment of the utility model, it is preferable that electromagnetic steel plate, electromagnetic steel plate is folded to be set as rotor core 102； The thickness of single electromagnetic steel plate is less than or equal to 0.5mm.

In this embodiment, rotor core 102 is formed by multiple electromagnetic steel plates are stacked, for increasing axial electrical isolation, is subtracted Electromagnetic steel plate, is done the rotor core 102 that slabbing is overlapped by few eddy-current loss, reduce the path of vortex circulation into And effectively reduce eddy-current loss；Further, the thickness for laminating the electromagnetic steel plate of rotor core 102 is less than or equal to 0.5mm, with So that the eddy-current loss of rotor core is smaller, the operational efficiency of motor is promoted.

In one embodiment of the utility model, it is preferable that permanent magnet 110 is labelled in magnet slot 108 by gluing, glue Bonding force be more than or equal to 27.6Mpa；Permanent magnet 110 is rare-earth Nd-Fe-B magnet.

In this embodiment, glue of the permanent magnet 110 using bonding force greater than 27.6Mpa is protected in permanent magnet trough 108 Demonstrate,prove the mechanical strength when operation of the high revolving speed of rotor 1；Rare-earth Nd-Fe-B magnet magnetism it is higher, guarantee motor operation stability and Operational efficiency.

In one embodiment of the utility model, it is preferable that as shown in figure 4, permanent magnet 110 and magnet slot 108 connect Contacting surface is rectangle.

In this embodiment, the contact surface using rectangle as permanent magnet 110 and magnet slot 108 can increase permanent magnet 110 and magnet slot 108 contact area, compared with contact surface is circular arc, the machining accuracies of rectangular surfaces is higher than arc surface, makes permanent magnetism Body 110 contacts closely with rotor core 102, and gluing is uniform, and the installation of permanent magnet 110 is more easier, and permanent magnet 110 is mechanical after installing Intensity is higher, can satisfy high revolving speed service requirement.

In one embodiment of the utility model, it is preferable that as shown in figure 4, permanent magnet 110, rivet hole 106, through-flow Kong Jun around rotor core 102 geometric center be centrosymmetric formula arrangement.

In this embodiment, permanent magnet 110, rivet hole 106, through flow hole surround the geometric center of rotor core 102 and are in Central Symmetric arrangement, can make the distribution of weight of rotor 1 uniform, vibration and noise is not likely to produce when running at high speed.

As shown in figure 5, the second aspect according to the present utility model, provides a kind of motor, motor includes: stator 2, fixed Son 2 includes rotor hole 210；And the rotor 1 as described in any of the above-described technical solution, rotor 1 are set in rotor hole 210.

According to motor provided by the utility model, the dosage of permanent magnet 110 is improved to the maximum extent, and it is negative to reach raising magnetic The purpose of lotus realizes the high power density of motor, and magnetic loading promotion can reduce copper olse, to improve electric efficiency. By the way that one layer of through flow hole 112 and two layers of through flow hole 114 are arranged on rotor core 102, reduce the weight of rotor, through-flow hole face Product increases, and meets under huge discharge compressor that meet big refrigerant after motor miniaturization through-flow, and rationally one layer of through flow hole 112 of setting With the position of two layers of through flow hole 114, it can guarantee the magnetic circuit demand of permanent magnet 110, magnetic circuit is unsaturated, to 110 magnetic circuit of permanent magnet Minimum is influenced, 110 utilization rate of permanent magnet can be improved.Further, by designing 110 outer rim shape and size of permanent magnet, so that The outer rim air gap uneven design of rotor 1 reduces air gap flux density harmonic content to greatest extent, reduces iron loss and spuious damage Consumption, to improve electric efficiency.

In specific embodiment, as shown in Fig. 4 to Figure 10, motor includes stator 2 and rotor 1, the stator core of stator 2 202 laminate to be formed by electromagnetic steel plate, and the rotor core 102 of rotor 1 is also to laminate to be formed by electromagnetic steel plate, and laminating stator The thickness of the electromagnetic steel plate of iron core 202 and rotor core 102, which is respectively less than, is equal to 0.5mm, it is preferable that electromagnetic steel plate in the embodiment With a thickness of 0.3mm, the slot number for the rotor 1 that specifically embodiment provides as shown in Figure 4 cooperates with it with being combined into 12 slot, 8 pole The stator 2 of connection is as shown in Figure 5.

As shown in figure 5, stator 2 includes stator core 202, the rotor hole 210 passed through for rotor 1, around the rotor Multiple slot for windings 206 that hole 210 is arranged and the stator winding 208 being mounted in slot for winding 206；Multiple slot for windings 206 enclose Around the rotor hole 210 be centrosymmetric formula arrangement.The stator winding 208 of motor around the home on stator tooth 204, formed motor A, B, C three-phase windings coil.

As shown in figure 4, rotor 1 includes rotor core 102, the centre bore 104 passed through for axis, for the riveting of connection rivet Nail hole 106, around the centre bore 104 setting multiple magnet slots 108, be mounted in magnet slot 108 permanent magnet 110, use In the one layer of through flow hole 112 and two layers of through flow hole 114 of refrigerant circulation.106, one layers of permanent magnet 110, rivet hole 112 and of through flow hole Two layers of through flow hole 114 are centrosymmetric formula arrangement around the centre bore 104, and permanent magnet 110 is rare-earth Nd-Fe-B magnet, permanent magnetism The outer surface of rotor core 102 is arranged in body 110, and 108 contact surface of magnet slot on permanent magnet 110 and rotor core 102 is square Shape slot, glue of the permanent magnet 110 using bonding force greater than 27.6Mpa guarantee the operation of the high revolving speed of rotor 1 in magnet slot 108 When mechanical strength.Rotor core outer rim between centre bore 104 be equipped with one layer of rivet hole, 106, one layers of through flow hole 112 and two layers Through flow hole 114, wherein it is equipped with one layer of through flow hole 112 between the adjacent rivet hole 106 at 102 outer rim of rotor core, two layers Through flow hole 114 is arranged close to rotor bore 104.The rivet hole 106 of rotor 1 be distributed in adjacent pole two magnet slots 108 it Between.

As shown in figure 4, the outer surface of permanent magnet 110 includes at least 1 section of rectilinear(-al), an at least segment length is the straight line of L1 The straight line parallel that width with the permanent magnet 110 for being mounted on magnet slot 108 on the inside of permanent magnet 110 is L2, meets: 0.05≤L1/ L2≤0.7；The retention bead 116 of permanent magnet 110 is equipped between the permanent magnet 110 of adjacent pole, retention bead 116 is into rotor The distance of the heart is L3, and the distance of the points outside of permanent magnet 110 to rotor center is L4 at 110 interpolar of permanent magnet, is met: 0.5mm ≤L4-L3≤3mm.In specific embodiment, as shown in figure 4,110 outer surface of permanent magnet is by three sections of rectilinear(-al)s L1=6.1mm, L2 =20mm, then L1/L2=0.31, reduces air gap flux density harmonic content to greatest extent, reduces iron loss and stray loss, reduces and turns Square pulsation, improves electric efficiency；The installation of the advantageous permanent magnet 110 of retention bead 116 of permanent magnet 110, wherein L3=29mm, L4=30mm, then L4-L3=1mm reduces q axle inductance Lq so that q axis magnetic circuit reluctance is big, reduces interelectrode magnetic leakage.

As shown in figure 4, rivet hole 106 is arranged between adjacent pole, rivet hole 106 arrives the minimum range of permanent magnet 110 For L5, the distance of two layers of through flow hole 114 of rivet hole 106 to inside is L6, is met: 1.2≤L5/L6≤3；One layer of outside is logical Discharge orifice 112 is arranged on 110 center of permanent magnet to the axis of 104 line of centre bore of rotor 1, can reduce q axle inductance, simultaneously Through-flow hole area is big；The center of rivet hole 106 is arranged in the axis of 104 line of rotor bore in two layers of through flow hole 114 of inside On line.In specific embodiment, L5=5.1mm, L6=2.8mm, then L5/L6=1.8, guarantees magnetic circuit demand, rivet hole Flux density between 106 and permanent magnet 110 is 1.2T, and magnetic circuit is unsaturated, and minimum, raising permanent magnetism is influenced on the magnetic circuit of permanent magnet 110 110 utilization rate of body.

Compare the line-styled rotor structure of conventional example use shown in FIG. 1 now to illustrate that the utility model promotes motor effect The effect of rate.Rotor structure shown in FIG. 1, the research on maximum utilized quantity of single magnetic pole permanent magnet is by rotor outer circle and single magnetic pole pole span angle The range of restriction determines that single magnetic pole pole span angle is determined by the number of poles of motor, after rotor outer circle size and motor pole number determination, turns Sub- outer diameter D 1=60mm, motor pole number p=4, the thickness h m in permanent magnet magnetization direction need to meet anti-demagnetization requirement, hm=are arranged 2.3mm, then the research on maximum utilized quantity of permanent magnet also determines under single magnetic pole, and permanent magnet width is 19.1mm.Turn compared to the utility model Minor structure, the width of permanent magnet is 20mm under the single magnetic pole of the utility model, and magnet width promotes 5%.Fig. 9 is that this is practical new Rotor shown in Fig. 4 of one embodiment of type arranges in pairs or groups the motor of Fig. 5 stator and conventional example Fig. 1 the arranges in pairs or groups empty load of motor of Fig. 5 stator Counter potential waveform comparison；The back emf coefficient of the utility model promotes 10.6% compared to conventional example "-" type, and back-emf promotes width Degree is big, and under same current, motor torsion is promoted, and power of motor density is promoted, and realizes motor miniaturization.11000 turns of high revolving speed/ Timesharing, copper loss reduce 47.9W, and iron loss reduces 22.7W, and magnet eddy-current loss increases 20W, electric efficiency relative value (i.e. two Person's efficiency subtraction value) promote 0.76%.

Compare " V " the font rotor structure of conventional example use shown in Fig. 2 now to illustrate that it is logical that the utility model promotes motor Stream and the effect for reducing rotor weight.Rotor structure shown in Fig. 2, the permanent magnet under single magnetic pole are " V " set up of character patt ern, V-type Magnet slot needs the silicon steel of enough area to rotor lateral area to meet magnetic circuit demand, and through flow hole can not be arranged, in V-type magnet Slot between rotor shaft hatch design one layer of through flow hole.Compared to the rotor structure of the utility model, the utility model can design two Layer through flow hole, through-flow hole area increase 2.18 times, meet that meet big refrigerant after motor miniaturization under huge discharge compressor through-flow. The rotor weight of the utility model reduces by 18.5%.

Compare the Surface Mount tile-type rotor structure of conventional example use shown in Fig. 3 now to illustrate that the utility model promotes motor Efficiency and the effect for reducing cogging torque pulsation.It is arc section that tile-type magnet is contacted with rotor surface, because arc section magnet adds Work precision is worse than straightway, and height rushes that rotor outer circle cylindricity is not high, and magnet contacts not close, arc section gluing with rotor core Unevenly, it is difficult to install that there are permanent magnets, and mechanical strength is low after permanent magnet installation, is unable to satisfy high revolving speed service requirement；Permanent magnetism Body thickness uniform design causes the torque pulsation of motor big, and air gap flux density harmonic content is high, and motor iron loss and stray loss are big, Electric efficiency decline.Compared to the rotor structure of the utility model, the motor iron loss of the utility model reduces by 8%, electric efficiency phase 0.42% is promoted to value (i.e. the two efficiency subtraction value).Figure 10 is that rotor shown in Fig. 4 of one embodiment of the utility model is taken Motor with Fig. 5 stator and conventional example Fig. 3 arrange in pairs or groups the motor cogging torque comparison of wave shape of Fig. 5 stator, the tooth socket of the utility model Torque pulsation reduces by 48%, improves motor noise.

In terms of third according to the present utility model, a kind of compressor is provided, including motor described in above-described embodiment. Therefore with whole beneficial effects of the motor, details are not described herein.

The embodiment of 4th aspect according to the present utility model, provides a kind of air conditioner, including any of the above-described implementation Compressor described in example.Therefore with whole beneficial effects of compressor, details are not described herein.

The embodiment of 5th aspect according to the present utility model, provides a kind of vehicle, including any of the above-described embodiment Compressor described in the motor or any of the above-described embodiment.Therefore whole beneficial effects with the motor or compressor, Details are not described herein.

In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term The terms such as " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, It can be and be detachably connected, or be integrally connected；" connected " can be directly connected, and can also pass through the indirect phase of intermediary Even.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be Concrete meaning.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples In can be combined in any suitable manner.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (19)

1. a kind of rotor, it to be used for motor, which is characterized in that the rotor includes:

Rotor core is provided with multiple magnet slots on the rotor core, and the magnet slot is located at the side of the rotor core；

Permanent magnet, the permanent magnet are set in the magnet slot, the permanent magnet of the side opposite with the magnet slot Cross-sectional profiles line includes at least one section of straight line.

2. rotor according to claim 1, which is characterized in that

It is parallel that at least one section of straight line with the permanent magnet is located at the cross-sectional profiles line on the inside of the magnet slot.

3. rotor according to claim 1, which is characterized in that

The length of at least one section straight line is L1, and the width of the permanent magnet in the magnet slot is L2, the L1 It is more than or equal to 0.05 with the ratio of the L2, and is less than or equal to 0.7.

4. rotor according to claim 2, which is characterized in that

The permanent magnet is plane towards the magnet slot side, and the one side opposite with the plane is convex surface, the permanent magnet Two sides be plane；

Wherein, the corresponding contour line in the convex surface includes at least one section of straight line.

5. rotor according to claim 2, which is characterized in that

The permanent magnet portion is set in the magnet slot, and the permanent magnet protruded from far from the magnet slot side it is described All side surfaces of rotor core.

6. rotor according to claim 1, which is characterized in that further include:

Retention bead is set on rotor core, between two magnet slots of adjacent pole.

7. rotor according to claim 6, which is characterized in that

The raised end of the retention bead to the rotor core geometric center distance be L3；

In the cross-sectional profiles line of the permanent magnet of the side opposite with the magnet slot on the retention bead side The distance of geometric center of tangent line to the rotor core of any point be L4, the difference of the L4 and the L3 is more than or equal to 0.5mm, and it is less than or equal to 3mm.

8. rotor according to claim 1, which is characterized in that further include:

Centre bore is set on the rotor core, and the centre bore is used to wear the axis of the motor；

Rivet hole is set on the rotor core；

Through flow hole is set on the rotor core.

9. rotor according to claim 8, which is characterized in that

The through flow hole includes one layer of through flow hole and two layers of through flow hole；

For one layer of through flow hole between the adjacent rivet hole, the quantity of one layer of through flow hole is multiple；

Two layers of through flow hole is located at the rotor core close to the centre bore side, and the quantity of two layers of through flow hole is more It is a.

10. rotor according to claim 9, which is characterized in that

The rivet hole is between adjacent magnetic pole, the minimum range L5 and the rivet of the rivet hole to the permanent magnet Hole to two layers of through flow hole minimum range L6 ratio be more than or equal to 1.2, and be less than or equal to 3.

11. rotor according to claim 9, which is characterized in that

One layer of through flow hole is located on the line of the geometric center of the permanent magnet and the geometric center of the centre bore；

Two layers of through flow hole is located on the line of geometric center of the geometric center of the rivet hole to the centre bore.

12. rotor according to any one of claim 1 to 11, which is characterized in that further include:

Electromagnetic steel plate, the electromagnetic steel plate is folded to be set as the rotor core；

The thickness of the single electromagnetic steel plate is less than or equal to 0.5mm.

13. rotor according to any one of claim 1 to 11, which is characterized in that

The permanent magnet is labelled in the magnet slot by gluing, and the bonding force of the glue is more than or equal to 27.6Mpa；

The permanent magnet is rare-earth Nd-Fe-B magnet.

14. rotor according to any one of claim 1 to 11, which is characterized in that

The permanent magnet and the contact surface of the magnet slot are rectangle.

15. the rotor according to any one of claim 8 to 11, which is characterized in that

The geometric center that the permanent magnet, the rivet hole, the through flow hole surround the rotor core is centrosymmetric formula Arrangement.

16. a kind of motor characterized by comprising

Stator, the stator include rotor hole；And

Rotor as described in any one of claims 1 to 15, the rotor are set in the rotor hole.

17. a kind of compressor, which is characterized in that including motor as claimed in claim 16.

18. a kind of air conditioner, which is characterized in that including compressor as claimed in claim 17.

19. a kind of vehicle, which is characterized in that including motor as claimed in claim 16；Or pressure as claimed in claim 17 Contracting machine.