CN107528400A - Rotor, magneto and compressor - Google Patents
Rotor, magneto and compressor Download PDFInfo
- Publication number
- CN107528400A CN107528400A CN201710915517.7A CN201710915517A CN107528400A CN 107528400 A CN107528400 A CN 107528400A CN 201710915517 A CN201710915517 A CN 201710915517A CN 107528400 A CN107528400 A CN 107528400A
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- Prior art keywords
- rotor
- magnetic pole
- holding tank
- stator
- rotor core
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention proposes a kind of rotor, magneto and compressor, wherein, rotor includes：Rotor core, multigroup holding tank is opened up along the circumference of rotor core on the end face of rotor core；Multiple permanent magnets, corresponding to be embedded in multigroup holding tank, the permanent magnet in every group of holding tank forms magnetic pole, wherein, the quantity of magnetic pole is more than or equal to 8, and less than or equal to 12, the distance between magnetic pole both ends are L, and the outer circumference diameter of rotor core is D1,0.18 × D1≤L≤0.28 × D1.Pass through technical scheme, on the one hand, by limiting the size relationship between the outer circumference diameter of rotor core and magnetic pole both ends distance, coordinate the increase of number of magnetic poles, there can be higher power density, on the other hand, by the quantity for limiting magnetic pole, the size of rotor can be reduced, and then realize that the miniaturization of motor is set.
Description
Technical field
The present invention relates to compressor field, in particular to a kind of rotor, a kind of magneto and a kind of compression
Machine.
Background technology
Permasyn morot (IPM) is that one kind places one layer of permanent magnet on the inside of rotor, mainly utilizes permanent-magnet torque, magnetic
Resistive torque is the motor of auxiliary, and in recent years, the miniaturization of compressor turns into industry research and the hot subject of application, using tradition
The magneto of technology, the problems such as miniaturization may face power density deficiency.Therefore it is necessary to have more power density forever
Magneto structure.
In correlation technique, it is same extremely under the distance between both ends of permanent magnet be more than 0.3 times of rotor maximum gauge,
Although this kind of structure disclosure satisfy that the performance requirement of routinely compressor, but be not suitable for minimizing the preparation of magneto,
Therefore, how a kind of satisfaction miniaturization preparation demand, and the magneto with higher power density are set, turns into and urgently solves
Technical problem certainly.
The content of the invention
At least one in order to solve the above-mentioned technical problem, it is an object of the present invention to provide a kind of rotor.
It is another object of the present invention to provide a kind of magneto.
It is yet a further object of the present invention to provide a kind of compressor.
To achieve these goals, the embodiment of first aspect present invention proposes a kind of rotor, suitable for compression
Machine, including：Rotor core, multigroup holding tank is opened up along the circumference of rotor core on the end face of rotor core；Multiple permanent magnets, it is right
It should be embedded in multigroup holding tank, the permanent magnet in every group of holding tank forms magnetic pole, wherein, the quantity of magnetic pole is more than or equal to 8,
And less than or equal to 12, the distance between magnetic pole both ends are L, and the outer circumference diameter of rotor core is D1,0.18 × D1≤L≤0.28
×D1。
In the technical scheme, rotor includes rotor core and the multigroup holding tank being opened on rotor core, holds
Groove of receiving is used to be embedded permanent magnet, so that every group of holding tank forms a magnetic pole after embedded permanent magnet, by by the quantity of magnetic pole
It is defined to be more than or equal to 8, and less than or equal to 12, the rotor phase with setting 4 or 6 magnetic poles in the prior art
Than being set by increasing magnetic pole, when rotor and motor stator coordinate and run, on the one hand, by limiting rotor core
Size relationship between outer circumference diameter and magnetic pole both ends distance, coordinates the increase of number of magnetic poles, can have higher power close
Degree, on the other hand, by limiting the quantity of magnetic pole, the size of rotor can be reduced, and then realize the pressure using the motor
The miniaturization of contracting machine is set.
Specifically, every group of holding tank, according to the setting shape of magnetic pole, one or more holding tanks can be included, at every group
When the quantity of holding tank is one, L is the distance between corresponding two power-off of a permanent magnet, in the quantity of every group of holding tank
For it is multiple when, L is the distance between outermost two end points of magnetic pole that corresponding multiple permanent magnets are spliced to form.
Multigroup holding tank is opened up along the circumference of rotor core on the end face of rotor core, i.e., the end points of each group holding tank is first
Tail, which is connected, can be configured to annular shape.
Wherein, permanent magnet is Rare-Earth Cobalt part or neodymium iron boron part.
Specifically, by limiting 0.18 × D1≤L≤0.28 × D1, it is assumed that the outer circumference diameter D1 of rotor core is 300mm
(Zhou Changwei 942mm), then accordingly 54mm≤L≤84mm, when the outer circumference diameter of rotor core determines, you can determine magnetic pole
Size and set location are set, by the size of regulation motor rotor, meet the preparation demand of motor miniaturization, it is electric by reducing
The volume of machine, the corresponding power density for improving motor.
In addition, when being non-smooth surface in the outer surface of rotor core, the outer circumference diameter of rotor core is straight for maximum periphery
Footpath.
In addition, the rotor in above-described embodiment provided by the invention can also have following additional technical feature：
In the above-mentioned technical solutions, it is preferable that on the cross section of each rotor core, between adjacent two groups of holding tanks
Midpoint and rotor core rotary shaft axle center between line formed first axle, adjacent two groups of holding tanks are with respect to first axle
It is symmetrical arranged；Line between the central point of any one group of holding tank and axle center forms the second axle, and magnetic pole both ends are with respect to the second axle
It is symmetrical arranged.
In the technical scheme, it is symmetrical arranged by the way that two groups of adjacent holding tanks are arranged with respect into first axle, and
The both ends of each magnetic pole are set with respect to the second axial symmetry, on the one hand, it is uniform on rotor core to realize magnetic pole, the opposing party
Face, be advantageous to improve reluctance torque, and then the output torque of lifting motor, with the power density of lifting motor.
In any of the above-described technical scheme, it is preferable that the magnetic pole that the permanent magnet that every group of holding tank is embedded is formed is a shape knot
The combination of any one or at least two structures in structure, v-shaped structure and U-shaped structure.
In the technical scheme, on the premise of 0.18 × D1≤L≤0.28 × D1 is met, magnetic pole can have a variety of knots
Configuration formula, can be a kind of single structure, for example be set in in-line, i.e., be realized by a permanent magnet, V-shaped structure or
Take the shape of the letter U structure, or the combining form of two or more structure, such as in-line+V-arrangement combination, in-line+U-shaped
Combination, two in-lines are arranged side by side, on the one hand, the demand of a variety of magnetic pole setting structures are met, to adapt to different make
With demand, on the other hand, when using non-yi word pattern structure setting, the air gap flux density of permanent magnet, Jin Erti are also advantageously improved
The output torque of high motor, so as to the power density of further lifting motor.
In addition, magnetic pole can also be other on the second axisymmetric symmetrical structure form, such as arc structure etc..
Specifically, rotor it is same extremely under permanent magnet be arranged to " one " character form structure, the width of permanent magnet is
L。
Rotor it is same extremely under permanent magnet be arranged to " V " character form structure, then the distance L at magnetic pole both ends is less than all
Permanent magnet width sum.
In any of the above-described technical scheme, it is preferable that the quantity of every group of holding tank is 3, so that the magnetic pole of U-shaped structure leads to
3 permanent magnets being embedded in holding tank are crossed to be spliced to form, wherein, the magnetic pole of each group of U-shaped structure is set with respect to the second axial symmetry
Put, the magnetic pole of adjacent two U-shaped structures is symmetrical arranged with respect to first axle.
In the technical scheme, by opening up three adjacent holding tanks of head and the tail, to form U-shaped structure, and then by embedding
Enter three permanent magnets, form U-shaped magnetic pole, compared with v-shaped structure, when L is constant, the size of the overall width of permanent magnet is bigger, enters
And in motor operation course, it is capable of the operational efficiency of further lifting motor.
In any of the above-described technical scheme, it is preferable that in magnetic pole formation combined with v-shaped structure for a shape structure, V-arrangement
The holding tank of structure and the holding tank of a shape structure are arranged side by side along the radial direction of cross section.
In the technical scheme, by setting a type structure and v-shaped structure combined magnetic pole, equivalent in the second axle
Multilayer permanent magnet is placed on direction, it is suitable with air permeability because the magnetic resistance of permanent magnet in itself is very big, therefore in the second axle
Inductance Ld on direction is smaller, and in the first direction of principal axis because rotor core has higher magnetic conductivity in itself, first axle
Inductance Lq on direction is larger, therefore improves the reluctance torque of rotor, so as to improve motor output torque, also just carries
High motor efficiency, by improving motor efficiency, can substitute and be carried by using the high performance permanent magnet material such as terres rares
The scheme of high electric efficiency, so as to advantageously reduce rare-earth usage, the energy is on the one hand saved, has alleviated environmental pressure, it is another
Aspect reduces cost, improves product competitiveness.
The realization of multilayer permanent magnet, the in-line permanent magnet being arranged side by side is can also be, the circular arc permanent magnetism being arranged side by side
A variety of preparation methods such as body, the V-arrangement permanent magnet being arranged side by side.
In any of the above-described technical scheme, it is preferable that the both ends of every group of holding tank extend laterally respectively, to form permanent magnetism
The mounting groove of body, wherein, mounting groove can fill NULL.
In the technical scheme, by setting mounting groove, on the one hand, the installation of permanent magnet can be easy to, on the other hand, also
NULL can be filled in mounting groove, the interference between two permanent magnets being disposed adjacent can be reduced.
The embodiment of second aspect of the present invention proposes a kind of magneto, suitable for compressor, including：Such as the present invention the
The rotor of the embodiment of one side；Motor stator, the corresponding outside for being sheathed on rotor, motor stator include stator iron
Core and the winding being set around on stator core, multiple stator slots are opened up on the inwall of stator core, multiple stator slots circumferentially divide
Cloth, and respectively turn on two end faces of stator core, so as to stator tooth is formed between the adjacent stator slot of any two, its
In, the outer circumference diameter of stator core is D2,0.09 × D2≤L≤0.18 × D2.
In the technical scheme, magneto includes stator core, winding, rotor core and permanent magnet, fixed by limiting
The outer circumference diameter D2 of sub- iron core, the size relationship between L, with reference to rotor core outer circumference diameter D1 and L between size close
System, define the size relationship between D1 and D2 indirectly, so as to it is determined that rotor core outer circumference diameter when, determine stator core
Outer circumference diameter, or it is determined that stator core outer circumference diameter when, determine the outer circumference diameter of rotor core, on the one hand, small-sized
Change high power density application scenario, while realizing prepared by magneto miniaturization, there is higher power compared with conventional motors
Density, on the other hand, the occasion of large volume motor is replaced using small size motor, the copper loss accounting of motor is significantly greater than iron loss and accounted for
Than, and permanent magnet motor structure and parameter in the application, conventional motors are contrasted, can effectively reduce the copper loss of magneto, so as to
Further lift the performance of magneto.
Specifically, it is assumed that the outer circumference diameter D1 of rotor core is 300mm (Zhou Changwei 942mm), accordingly 54mm≤L≤
84mm, due to 0.18 × D1≤L≤0.28 × D1, and 0.09 × D2≤L≤0.18 × D2, then it is corresponding it is considered that 1.56 ×
D1≤D2≤2 × D1, so as to it is determined that on the premise of D1, you can determine D2 size value.
In the above-mentioned technical solutions, it is preferable that the quantity of stator slot is more than or equal to 10, and less than or equal to 14.
In the technical scheme, by the way that the quantity of stator slot is defined to be more than or equal to 10, or less than or equal to 14
It is individual, can be that the rotor more than or equal to 8, and less than or equal to 12 is adapted with number of magnetic poles, so as to realize forever
The Performance optimization of magneto is set.
Specifically, the combination that stator slot quantity is engaged with number of magnetic poles includes：Stator slot quantity is 10+number of magnetic poles
For 8 combinations, stator slot quantity is that the quantity of 12+magnetic pole is 10 combinations, and stator slot quantity is that the quantity of 14+magnetic pole is
12 combination etc..
In any of the above-described technical scheme, it is preferable that winding is set around on stator tooth by the form of centralized winding.
In the technical scheme, centralized winding is applied to salient pole type stator, generally turns to square coil, warp band bag
Sizing is pricked, then after paint-dipping drying is handled, around being located on motor stator, on the one hand, use centralized winding, preparation can be reduced
Cost, on the other hand, meet the preparation demand of miniaturization magneto.
In any of the above-described technical scheme, it is preferable that stator slot quantity be 12, when winding is three-phase windings, often
Phase winding includes 4 coil groups, and each coil group includes multiturn coil.
In the technical scheme, when the quantity of stator slot is 12, the quantity of corresponding magnetic pole can be 10, stator
Winding uses centralized winding, and stator winding has 4 coil groups, each coil around being located on each stator tooth, per phase winding
Group has some circle coils, the electric current that 4 coil groups of same phase winding are passed through, electromagnetic field is generated in stator teeth, with for the moment
Carve, two of which coil group magnetic direction caused by stator teeth along stator radially inwards, two other coil group is in stator
Magnetic direction caused by teeth portion along stator radially outward, can also be by the two of which coil group of same phase and two other coil
The direction of winding of group sets difference, to realize generation opposing magnetic field, and then realizes the materialization of the winding of miniaturization magneto
Set.
The embodiment of third aspect present invention proposes a kind of compressor, including described in the embodiment of second aspect of the present invention
Magneto.
Wherein, compressor of the invention also includes：The compression members such as cylinder, base bearing, supplementary bearing, piston and bent axle.
In the technical scheme, by using the rotor and motor stator limited in above-described embodiment, pass through raising
The power density of magneto, to meet the preparation demand of magneto miniaturization, magneto is as one in compressor
Component, and then while the operation power of compressor is lifted, can realize prepared by the miniaturization of compressor.
The additional aspect and advantage of the present invention will become obvious in following description section, or the practice by the present invention
Recognize.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 shows the planar structure schematic diagram of rotor according to an embodiment of the invention；
Fig. 2 shows the planar structure schematic diagram of the rotor core in Fig. 1；
Fig. 3 shows the planar structure schematic diagram of rotor according to another embodiment of the invention；
Fig. 4 shows the planar structure schematic diagram of rotor according to still a further embodiment；
Fig. 5 shows the planar structure schematic diagram of rotor according to still another embodiment of the invention；
Fig. 6 shows the planar structure schematic diagram of magneto according to an embodiment of the invention；
Fig. 7 shows the planar structure schematic diagram of motor stator according to an embodiment of the invention；
Fig. 8 shows the cross section structure schematic diagram of compressor according to an embodiment of the invention.
Wherein, corresponding relations of the Fig. 1 into Fig. 7 between reference and component names is：
10 rotors, 102 rotor cores, 1022 holding tanks, 104 permanent magnets, 1024 mounting grooves, 20 motor stators, 202
Stator core, 204 windings, 30 cylinders, 40 base bearings, 50 supplementary bearings, 60 pistons, 70 bent axles.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Referring to the rotor of Fig. 1 to Fig. 5 descriptions according to some embodiments of the invention.
Embodiment one：
As shown in Figures 1 to 5, rotor 10 according to an embodiment of the invention, suitable for compressor, including：Rotor
Iron core 102, multigroup holding tank 1022 is opened up along the circumference of rotor core 102 on the end face of rotor core 102；Multiple permanent magnets
104, corresponding to be embedded in multigroup holding tank 1022, the permanent magnet 104 in every group of holding tank 1022 forms magnetic pole, wherein, magnetic pole
Quantity be more than or equal to 8, and less than or equal to 12, the distance between magnetic pole both ends are L, the outer circumference diameter of rotor core 102
For D1,0.18 × D1≤L≤0.28 × D1.
In this embodiment, rotor 10 includes rotor core 102 and the multigroup receiving being opened on rotor core 102
Groove 1022, holding tank 1022 are used to be embedded permanent magnet 104, so that every group of holding tank 1022 forms one after embedded permanent magnet 104
Individual magnetic pole, by being defined to the quantity of magnetic pole to be more than or equal to 8, and less than or equal to 12, with setting 4 in the prior art
Individual or 6 magnetic poles rotor 10 is compared, and is set by increasing magnetic pole, is coordinated in rotor 10 and motor stator 20 and is run
When, on the one hand, by limiting the size relationship between the outer circumference diameter of rotor core and magnetic pole both ends distance, coordinate number of magnetic poles
Increase, can have higher power density, on the other hand, by limiting the quantity of magnetic pole, rotor 10 can be reduced
Size, and then realize using the motor compressor miniaturization set.
Specifically, every group of holding tank 1022, according to the setting shape of magnetic pole, one or more holding tanks can be included
1022, when the quantity of every group of holding tank 1022 is one, L is the distance between corresponding 104 two power-off of a permanent magnet,
When the quantity of every group of holding tank 1022 is multiple, L is the outermost of the magnetic pole that corresponding multiple permanent magnets 104 are spliced to form
The distance between two end points.
On the end face of rotor core 102 multigroup holding tank 1022, i.e. each group of receiving are opened up along the circumference of rotor core 102
The end points of groove 1022, which joins end to end, can be configured to annular shape.
Wherein, permanent magnet 104 is Rare-Earth Cobalt part or neodymium iron boron part.
Specifically, pass through and limit 0.18 × D1≤L≤0.28 × D1, it is assumed that the outer circumference diameter D1 of rotor core 102 is
300mm (Zhou Changwei 942mm), then accordingly 54mm≤L≤84mm, when the outer circumference diameter of rotor core 102 determines, you can really
Determine the setting size and set location of magnetic pole, by the size of regulation motor rotor 10, meet the preparation demand that motor minimizes,
By reducing the volume of motor, the corresponding power density for improving motor.
In addition, when being non-smooth surface in the outer surface of rotor core 102, the outer circumference diameter of rotor core 102 is maximum
Outer circumference diameter.
In addition, the rotor 10 in above-described embodiment provided by the invention can also have following additional technical feature：
As shown in Figures 1 and 3, it is adjacent in the above embodiment, it is preferable that on the cross section of each rotor core 102
Two groups of holding tanks 1022 between midpoint and rotor core 102 rotary shaft axle center between line formed first axle q, phase
Two groups of adjacent holding tanks 1022 are symmetrical arranged with respect to first axle q；Between the central point of any one group of holding tank 1022 and axle center
Line forms the second axle d, and magnetic pole both ends are symmetrical arranged with respect to the second axle d.
In this embodiment, it is symmetrical arranged by the way that two groups of adjacent holding tanks 1022 are arranged with respect into first axle q, with
And the both ends of each magnetic pole are symmetrical arranged with respect to the second axle d, on the one hand, it is uniform on rotor core 102 to realize magnetic pole, separately
On the one hand, be advantageous to improve reluctance torque, and then the output torque of lifting motor, with the power density of lifting motor.
As shown in Figures 1 to 5, in any of the above-described embodiment, it is preferable that the permanent magnet that every group of holding tank 1022 is embedded
104 magnetic poles formed are the combination of any one or at least two structures in a shape structure, v-shaped structure and U-shaped structure.
In this embodiment, on the premise of 0.18 × D1≤L≤0.28 × D1 is met, magnetic pole can have various structures
It form, can be a kind of single structure, for example be set in in-line, i.e., be realized by a permanent magnet 104, V-shaped structure
Or the structure that takes the shape of the letter U, or the combining form of two or more structure, such as in-line+V-arrangement combination, in-line+U
Shape combines, and two in-lines are arranged side by side, on the one hand, the demand of a variety of magnetic pole setting structures is met, it is different to adapt to
Use demand, on the other hand, when using non-yi word pattern structure setting, the air gap flux density of permanent magnet 104 is also advantageously improved, is entered
And the output torque of motor is improved, so as to the power density of further lifting motor.
In addition, magnetic pole can also be other on the symmetrical symmetrical structure forms of the second axle d, such as arc structure etc..
Embodiment two：
As shown in figure 1, specifically, rotor 10 it is same extremely under permanent magnet 104 be arranged to " one " character form structure, forever
The width of magnet 104 is L.
Embodiment three：
As shown in figure 3, rotor 10 it is same extremely under permanent magnet 104 be arranged to " V " character form structure, then magnetic pole both ends
Distance L be less than all permanent magnets 104 width sum.
Example IV：
As shown in figure 4, in any of the above-described embodiment, it is preferable that the quantity of every group of holding tank 1022 is 3, so that U-shaped
The magnetic pole of structure is spliced to form by 3 permanent magnets being embedded in holding tank 1,022 104, wherein, the magnetic of each group of U-shaped structure
Extremely it is symmetrical arranged with respect to the second axle d, the magnetic pole of adjacent two U-shaped structures is symmetrical arranged with respect to first axle q.
In this embodiment, by opening up three adjacent holding tanks of head and the tail 1022, to form U-shaped structure, and then pass through
Embedded three permanent magnets 104, form U-shaped magnetic pole, compared with v-shaped structure, when L is constant, and the size of the overall width of permanent magnet 104
It is bigger, and then in motor operation course, it is capable of the operational efficiency of further lifting motor.
Embodiment five：
As shown in figure 5, in any of the above-described embodiment, it is preferable that in magnetic pole be a shape structure and the combined shape of v-shaped structure
Cheng Shi, the holding tank 1022 of v-shaped structure and the holding tank 1022 of a shape structure are arranged side by side along the radial direction of cross section.
In this embodiment, by setting a type structure and v-shaped structure combined magnetic pole, equivalent to the second axle d's
Multilayer permanent magnet 104 is placed on direction, due to permanent magnet 104, the magnetic resistance of itself is very big, suitable with air permeability, therefore
Inductance Ld on second axle d directions is smaller, and in first axle q directions because rotor core 102 itself has higher magnetic conductivity,
So the inductance Lq on first axle q directions is larger, therefore the reluctance torque of rotor 10 is improved, it is defeated so as to improve motor
Go out torque, also just improve motor efficiency, by improving motor efficiency, can substitute by using the high performance such as terres rares
The material of permanent magnet 104 improves the scheme of electric efficiency, so as to advantageously reduce rare-earth usage, has on the one hand saved the energy, mitigates
Environmental pressure, on the other hand reduces cost, improves product competitiveness.
Embodiment six：
The realization of multilayer permanent magnet 104, it can also be the in-line permanent magnet 104 being arranged side by side.
Embodiment seven：
The realization of multilayer permanent magnet 104, it can also be the circular arc permanent magnet 104 being arranged side by side.
Embodiment eight：
The realization of multilayer permanent magnet 104, it can also be a variety of preparation methods such as the V-arrangement permanent magnet 104 being arranged side by side.
As shown in Fig. 2 in any of the above-described embodiment, it is preferable that prolong laterally respectively at the both ends of every group of holding tank 1022
Stretch, to form the mounting groove 1024 of permanent magnet 104, wherein, mounting groove 1024 can fill NULL.
In this embodiment, by setting mounting groove 1024, on the one hand, the installation of permanent magnet 104, the opposing party can be easy to
Face, can also in the mounting groove 1024 filling NULL, can reduce dry between two permanent magnets 104 being disposed adjacent
Disturb.
Referring to the magneto of Fig. 6 and Fig. 7 descriptions according to some embodiments of the invention.
Embodiment nine：
As shown in fig. 6, magneto according to an embodiment of the invention, suitable for compressor, including：Any of the above-described is real
Apply the rotor 10 described in example；Motor stator 20, the corresponding outside for being sheathed on rotor 10, motor stator 20 include stator
Iron core 202 and the winding 204 being set around on stator core 202, multiple stator slots are opened up on the inwall of stator core 202, it is multiple
Stator slot is circumferentially distributed, and respectively turns on two end faces of stator core 202 so that the adjacent stator slot of any two it
Between form stator tooth, wherein, the outer circumference diameter of stator core 202 is D2,0.09 × D2≤L≤0.18 × D2.
In this embodiment, magneto includes stator core 202, winding 204, rotor core 102 and permanent magnet 104,
By limiting the outer circumference diameter D2 of stator core 202, the size relationship between L, with reference to the outer circumference diameter D1 of rotor core 102
Size relationship between L, the size relationship between D1 and D2 is defined indirectly, so as to it is determined that the periphery of rotor core 102
During diameter, determine the outer circumference diameter of stator core 202, or it is determined that stator core 202 outer circumference diameter when, determine rotor core
102 outer circumference diameter, on the one hand, in miniaturization high power density application scenario, realizing that prepared by magneto miniaturization same
When, there is higher power density compared with conventional motors, on the other hand, the occasion of large volume motor is replaced using small size motor,
The copper loss accounting of motor is significantly greater than iron loss accounting, and permanent magnet motor structure and parameter in the application, contrasts conventional motors, can
The copper loss of magneto is effectively reduced, so as to further lift the performance of magneto.
Specifically, it is assumed that the outer circumference diameter D1 of rotor core 102 is 300mm (Zhou Changwei 942mm), accordingly 54mm≤L
≤ 84mm, due to 0.18 × D1≤L≤0.28 × D1, and 0.09 × D2≤L≤0.18 × D2, then it is corresponding it is considered that 1.56
× D1≤D2≤2 × D1, so as to it is determined that on the premise of D1, you can determine D2 size value.
In the above embodiment, it is preferable that the quantity of stator slot is more than or equal to 10, and less than or equal to 14.
In this embodiment, by the way that the quantity of stator slot is defined to more than or equal to 10, or less than or equal to 14,
It can be adapted with number of magnetic poles for the rotor 10 more than or equal to 8, and less than or equal to 12, so as to realize permanent magnetism
The Performance optimization of motor is set.
Specifically, the combination that stator slot quantity is engaged with number of magnetic poles includes：Stator slot quantity is 10+number of magnetic poles
For 8 combinations, stator slot quantity is that the quantity of 12+magnetic pole is 10 combinations, and stator slot quantity is that the quantity of 14+magnetic pole is
12 combination etc..
As shown in fig. 7, in any of the above-described embodiment, it is preferable that winding 204 by the form of centralized winding 204, around
On stator tooth.
In this embodiment, centralized winding 204 is applied to salient pole type stator, generally turns to square coil, warp band
Wrapping sizing, then after paint-dipping drying is handled, around being located on motor stator 20, on the one hand, centralized winding 204 is used, can
Reduce and prepare cost, on the other hand, meet the preparation demand of miniaturization magneto.
Embodiment ten：
As shown in fig. 7, in any of the above-described embodiment, it is preferable that stator slot quantity be 12, winding 204 be three
During phase winding 204, include 4 coil groups per phase winding 204, each coil group includes multiturn coil.
In this embodiment, when the quantity of stator slot is 12, the quantity of corresponding magnetic pole can be 10, stator around
Group 204 uses centralized winding 204, and stator winding 204 has 4 coils around being located on each stator tooth, per phase winding 204
Group, each coil group have some circle coils, the electric current that 4 coil groups of same phase winding 204 are passed through, are generated in stator teeth
Electromagnetic field, synchronization, two of which coil group magnetic direction caused by stator teeth along stator radially inwards, two other
Coil group magnetic direction caused by stator teeth along stator radially outward, can also by the two of which coil group of same phase and
The direction of winding of two other coil group sets difference, to realize generation opposing magnetic field, and then realizes miniaturization magneto
The materialization of winding 204 is set.
As shown in figure 8, compressor, including the magneto described in this hair above-described embodiment according to an embodiment of the invention.
Specifically, compressor according to an embodiment of the invention, in addition to：Cylinder 30, base bearing 40, supplementary bearing 50, work
Fill in the compression member such as 60 and bent axle 70.
In this embodiment, by using the rotor and motor stator limited in above-described embodiment, by improving forever
The power density of magneto, to meet the preparation demand of magneto miniaturization, magneto is as a group in compressor
Part, and then while the operation power of compressor is lifted, can realize prepared by the miniaturization of compressor.
In the present invention, term " first ", " second ", " the 3rd " are only used for the purpose described, and it is not intended that instruction
Or imply relative importance；Term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term " installation ",
The term such as " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected or can
Dismantling connection, or be integrally connected；" connected " can be joined directly together, and can also be indirectly connected by intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In description of the invention, it is to be understood that the instruction such as term " on ", " under ", "left", "right", "front", "rear"
Orientation or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplification is retouched
State, rather than instruction or imply signified device or unit there must be specific direction, with specific azimuth configuration and operation,
It is thus impossible to it is interpreted as limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean to combine at least one reality that specific features, structure, material or the feature that the embodiment or example describe are contained in the present invention
Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with
Suitable mode combines.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
- A kind of 1. rotor, suitable for compressor, it is characterised in that including：Rotor core, multigroup holding tank is opened up along the circumference of the rotor core on the end face of the rotor core；Multiple permanent magnets, corresponding to be embedded in multigroup holding tank, the permanent magnet described in every group in holding tank forms magnetic Pole,Wherein, the quantity of the magnetic pole is more than or equal to 8, and less than or equal to 12, the distance between described magnetic pole both ends are L, The outer circumference diameter of the rotor core is D1,0.18 × D1≤L≤0.28 × D1.
- 2. rotor according to claim 1, it is characterised in thatOn the cross section of each rotor core, midpoint and the rotor core between holding tank described in adjacent two groups Rotary shaft axle center between line form first axle, the relatively described first axle of described two slits is symmetrical arranged；Line described in any one group between the central point of holding tank and the axle center forms the second axle, and the magnetic pole both ends are relative Second axial symmetry is set.
- 3. rotor according to claim 2, it is characterised in thatThe magnetic pole that the permanent magnet that holding tank described in every group is embedded is formed is appointing in a shape structure, v-shaped structure and U-shaped structure Anticipate a kind of or at least two structures combinations.
- 4. rotor according to claim 3, it is characterised in thatThe quantity of holding tank described in every group is 3, so that the magnetic pole of the U-shaped structure is embedded in the holding tank by 3 The permanent magnet be spliced to form,Wherein, relatively described second axial symmetry of the magnetic pole of U-shaped structure described in each group is set, adjacent two U-shaped structures The relatively described first axle of magnetic pole be symmetrical arranged.
- 5. rotor according to claim 3, it is characterised in thatIn magnetic pole formation combined with the v-shaped structure for the shape structure, the holding tank of the v-shaped structure and institute Radial direction of the holding tank of a shape structure along the cross section is stated to be arranged side by side.
- 6. rotor according to any one of claim 1 to 5, it is characterised in thatThe both ends of holding tank extend laterally respectively described in every group, to form the mounting groove of the permanent magnet,Wherein, the mounting groove can fill NULL.
- A kind of 7. magneto, suitable for compressor, it is characterised in that including：Rotor as any one of claim 1 to 6；Motor stator, the corresponding outside for being sheathed on the rotor, the motor stator include stator core and are set around institute The winding on stator core is stated, multiple stator slots are opened up on the inwall of the stator core, the multiple stator slot circumferentially divides Cloth, and respectively turn on two end faces of the stator core so that formed between the adjacent stator slot of any two it is fixed Sub- tooth,Wherein, the outer circumference diameter of the stator core is D2,0.09 × D2≤L≤0.18 × D2.
- 8. magneto according to claim 7, it is characterised in thatThe quantity of the stator slot is more than or equal to 10, and less than or equal to 14.
- 9. magneto according to claim 8, it is characterised in thatThe winding is set around on the stator tooth by the form of centralized winding.
- 10. magneto according to claim 9, it is characterised in thatIt is 12 in the quantity of the stator slot, when the winding is three-phase windings, winding described in per phase includes 4 coil groups, Each coil group includes multiturn coil.
- A kind of 11. compressor, it is characterised in that including：Magneto as any one of claim 7 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915517.7A CN107528400B (en) | 2017-09-30 | 2017-09-30 | Motor rotor, permanent magnet motor and compressor |
| PCT/CN2018/086247 WO2019062130A1 (en) | 2017-09-30 | 2018-05-10 | Motor rotor, permanent magnet motor, and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915517.7A CN107528400B (en) | 2017-09-30 | 2017-09-30 | Motor rotor, permanent magnet motor and compressor |
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| CN107528400A true CN107528400A (en) | 2017-12-29 |
| CN107528400B CN107528400B (en) | 2021-07-30 |
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| CN201710915517.7A Active CN107528400B (en) | 2017-09-30 | 2017-09-30 | Motor rotor, permanent magnet motor and compressor |
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| CN108539943A (en) * | 2018-06-19 | 2018-09-14 | 安徽美芝精密制造有限公司 | Permanent magnet synchronous motor and compressor |
| CN108616177A (en) * | 2018-06-19 | 2018-10-02 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration system |
| WO2019062130A1 (en) * | 2017-09-30 | 2019-04-04 | 广东美芝制冷设备有限公司 | Motor rotor, permanent magnet motor, and compressor |
| CN110236426A (en) * | 2018-03-07 | 2019-09-17 | 广东美的生活电器制造有限公司 | Food processor and base for food processor |
| CN110247531A (en) * | 2018-03-07 | 2019-09-17 | 广东美的生活电器制造有限公司 | Food processor and motor for food processor |
| CN110236407A (en) * | 2018-03-07 | 2019-09-17 | 广东美的生活电器制造有限公司 | Food processor and its failure error-reporting method and system |
| CN110247484A (en) * | 2018-03-07 | 2019-09-17 | 广东美的生活电器制造有限公司 | Food processor and stator core, motor for food processor |
| CN110236418A (en) * | 2018-03-07 | 2019-09-17 | 广东美的生活电器制造有限公司 | Food processor and its constant-power control method and control device |
| WO2019174328A1 (en) * | 2018-03-16 | 2019-09-19 | 珠海格力电器股份有限公司 | Rotor structure and motor having same |
| CN110277851A (en) * | 2019-07-23 | 2019-09-24 | 中达电机股份有限公司 | Mixed magneto rotor and its mixed magneto |
| CN110875678A (en) * | 2018-08-30 | 2020-03-10 | 广东美芝精密制造有限公司 | Permanent magnet synchronous motor and compressor |
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| CN115149765A (en) * | 2022-07-05 | 2022-10-04 | 北京航空航天大学 | Six-phase fault-tolerant permanent magnet synchronous motor |
| US11936259B2 (en) | 2018-03-07 | 2024-03-19 | Guangdong Midea Consumer Electric Manufacturing Co., Ltd. | Food processor and electric motor for food processor |
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