CN106877534A - Rotor, motor, compressor and refrigerator - Google Patents

Rotor, motor, compressor and refrigerator Download PDF

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Publication number
CN106877534A
CN106877534A CN201710157785.7A CN201710157785A CN106877534A CN 106877534 A CN106877534 A CN 106877534A CN 201710157785 A CN201710157785 A CN 201710157785A CN 106877534 A CN106877534 A CN 106877534A
Authority
CN
China
Prior art keywords
magnet
rotor
rotor core
mounting groove
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710157785.7A
Other languages
Chinese (zh)
Inventor
徐奔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Anhui Meizhi Compressor Co Ltd
Original Assignee
Midea Group Co Ltd
Anhui Meizhi Compressor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, Anhui Meizhi Compressor Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201710157785.7A priority Critical patent/CN106877534A/en
Publication of CN106877534A publication Critical patent/CN106877534A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2213/00Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03Machines characterised by numerical values, ranges, mathematical expressions or similar information

Abstract

The invention discloses a kind of rotor, motor, compressor and refrigerator.Rotor includes:Rotor core, rotor core is provided with multiple mounting grooves set along its circumferential direction uniform intervals, and each mounting groove extends upward through rotor core in the axle of rotor core;Multiple magnet, multiple magnet are corresponded with multiple mounting grooves, and each magnet is contained in corresponding mounting groove, and each magnet recessed is configured to circle-arc profile along the direction of the central axis towards rotor core with by magnet;Wherein, the maximum outline radius of rotor core is R1, and the radius of circle where the arc surface of the side of the central axis away from rotor core of each magnet is R2, and the thickness of magnet is H, and R1, R2 and H meet:0.84≤R2/R1≤0.88,0.22≤H/R1≤0.245.Rotor of the invention, simplifies the processing to magnet, improves the stock utilization of magnet, and the anti-demagnetization capability of magnet is strong.

Description

Rotor, motor, compressor and refrigerator
Technical field
The present invention relates to household electrical appliance technical field, more particularly, to a kind of rotor, motor, compressor and refrigerator.
Background technology
Rotor in correlation technique, stock utilization is low, processed complex, and the anti-demagnetization capability of rotor magnet is poor, pressure The reliability of contracting machine is not good.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of turning Son, the rotor can ensure the stock utilization of magnet and the simplicity of processing.
The present invention also proposes a kind of motor with above-mentioned rotor.
The present invention also proposes a kind of compressor with above-mentioned motor.
The present invention also proposes a kind of refrigerator with above-mentioned compressor.
Rotor according to embodiments of the present invention, including:Rotor core, the cross section of the rotor core is formed as annular shape Shape, the rotor core is provided with multiple mounting grooves set along its circumferential direction uniform intervals, and each described mounting groove is in institute The axle for stating rotor core extends upward through the rotor core;Multiple magnet, multiple magnet are with multiple mounting grooves one by one Correspondence, and each described magnet is contained in the corresponding mounting groove, each described magnet is along towards the rotor core The direction of central axis is recessed to be configured to circle-arc profile with by the magnet;Wherein, the maximum outline of the rotor core Radius is R1, and the radius of circle is where the arc surface of the side of the central axis away from the rotor core of each magnet R2, the thickness of the magnet is H, and described R1, R2 and H meet:0.84≤R2/R1≤0.88,0.22≤H/R1≤0.245.
Rotor according to embodiments of the present invention, on the one hand by making each circular arc magnet edge towards the center of rotor core The direction of axis is recessed, the simple structure of such magnet, simplifies the processing to magnet, improves material profit during processing magnet With rate;On the other hand by making the maximum outline radius R1 of rotor core and the central shaft away from rotor core of each magnet The radius R2 of circle meets where the arc surface of the side of line:0.84≤R2/R1≤0.88, is conducive to optimizing the structure and chi of rotor It is very little, so as to be conducive to improving the performance of motor.In addition, meeting the thickness H and R1 of magnet:0.22≤H/R1≤0.245, favorably In the anti-demagnetization capability for improving magnet, when rotor is with motor, be conducive to improving the reliability of motor work, when motor is used When on the compressor, be conducive to improving the reliability of compressor operating.
Some embodiments of the invention, the Breadth Maximum of the magnet is L, and L meets:1.28≤L/R1≤1.34.
Some embodiments of the invention, when the magnet coordinates in the mounting groove, the width of the magnet Side side and the mounting groove on direction are just D to the ultimate range between the side wall of the side side, and D meets: 0.25mm≤D≤0.35mm。
Some embodiments of the invention, the magnet is four.
Some embodiments of the invention, the magnet is ferrite lattice.
Some embodiments of the invention, the rotor core is formed by multiple rotor punchings stacking.
Some embodiments of the invention, the rotor punching is silicon steel sheet.
Motor according to embodiments of the present invention, including the rotor in above-described embodiment.
Motor according to embodiments of the present invention, by setting above-mentioned rotor, is conducive to improving the reliability of motor work, Reduces cost.
Compressor according to embodiments of the present invention, including the motor in above-described embodiment.
Compressor according to embodiments of the present invention, by setting above-mentioned motor, be conducive to improve compressor operating can By property, reduces cost.
Refrigerator according to embodiments of the present invention, including the compressor in above-described embodiment.
Refrigerator according to embodiments of the present invention, by setting above-mentioned compressor, is conducive to improving the reliability of refrigerator work Property, reduces cost.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined Substantially and be readily appreciated that, wherein:
Fig. 1 is the cooperation schematic diagram of rotor according to some embodiments of the invention and stator;
Fig. 2 is the schematic diagram of rotor according to some embodiments of the invention;
Fig. 3 is the schematic cross-sectional view of rotor according to some embodiments of the invention;
Fig. 4 is the close-up schematic view of rotor according to some embodiments of the invention;
Fig. 5 is the stereogram of magnet according to some embodiments of the invention;
Fig. 6 is the sectional view of magnet according to some embodiments of the invention.
Reference:
Rotor 100;
Rotor core 1;Mounting groove 11;Magnet 2;Lead angle 21;
Stator 200.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " axial direction ", The orientation or position relationship of the instructions such as " radial direction ", " circumference " are based on orientation shown in the drawings or position relationship, merely to just Described in the description present invention and simplifying, rather than indicate imply signified device or element must have specific orientation, with Specific azimuth configuration and operation, therefore be not considered as limiting the invention.In the description of the invention, unless otherwise saying Bright, " multiple " is meant that two or more.
Rotor 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 6, rotor 100 may be mounted at stator 200 Together in order to the assembling to motor.
As Figure 1-Figure 4, rotor 100 according to embodiments of the present invention, can include rotor core 1 and multiple magnet 2. Alternatively, magnet 2 can be ferrite lattice.
Specifically, as shown in Fig. 2-Fig. 3, the cross section of rotor core 1 is formed as annular shape, for example, rotor core 1 Cross section is formed as annular shape.It will be appreciated by persons skilled in the art that when rotor 100 is assemblied on motor, motor When being applied in compressor, interior annular is available for the bent axle of compressor to pass through.
Rotor core 1 is provided with multiple mounting grooves 11 set along its circumferential direction uniform intervals, and each mounting groove 11 exists The axle of rotor core 1 extends upward through rotor core 1, that is to say, that multiple mounting grooves 11 are equal in the circumferential direction of rotor core 1 Even interval setting, and each mounting groove 11 extends upward through rotor core 1 in the axle of rotor core 1.
Multiple magnet 2 are corresponded with multiple mounting grooves 11, and each magnet 2 is contained in corresponding mounting groove 11, That is, a magnet 2 is installed in each mounting groove 11.For example, rotor 100 includes four magnet 2, set on rotor core 1 There are four mounting grooves 11 that uniform intervals are set in its circumferential direction, a magnet 2 is correspondingly provided with each mounting groove 11.
Preferably, the shape of each mounting groove 11 is substantially the same with the shape of magnet 2, consequently facilitating magnet 2 and mounting groove 11 Matching installation.
As shown in figs 1 to 6, each magnet 2 is recessed with by the structure of magnet 2 along the direction of the central axis towards rotor core 1 Cause circle-arc profile, that is to say, that when each magnet 2 is arranged in corresponding mounting groove 11, each circle-arc profile Magnet 2 protrudes towards the direction of the central axis of rotor core 1.Thus, the simple structure of magnet 2, so as to can simplify to magnet 2 Processing, improve processing magnet 2 when stock utilization.
The maximum outline radius of rotor core 1 is R1, for example, when the cross section of rotor core 1 is formed as annular shape During shape, the outline radius of rotor core 1 is R1.And for example, when the cross section of rotor core 1 is formed as non-circular shape, The radius of circle where the maximum outline of rotor core 1 is R1.
As shown in fig. 6, half of circle where the arc surface of the side of the central axis away from rotor core 1 of each magnet 2 Footpath is that R2, R1 and R2 meet:0.84≤R2/R1≤0.88.Thus, be conducive to optimizing the structure snd size of rotor 100, so as to have Beneficial to the performance for improving motor.
Alternatively, R2/R1 is 0.85,0.856,0.86,0.865,0.87,0.876 etc., so as to further optimize rotor 100 structure snd size.
As shown in fig. 6, the thickness of magnet 2 meets for H, R1 and H:0.22≤H/R1≤0.245.Thus, by by magnet 2 Thickness and the maximum outline radius R1 of rotor core 1 between proportionate relationship be limited to:0.22≤H/R1≤0.245, this Sample is conducive to improving the anti-demagnetization capability of magnet 2, when rotor 100 is with motor, is conducive to improving the reliability of motor work Property, when motor is used on the compressor, be conducive to improving the reliability of compressor operating.
Alternatively, H/R1 is 0.222,0.225,0.228,0.23,0.232,0.235,0.238 or 0.24, so as to enter one The anti-demagnetization capability of step optimization magnet 2.
Rotor 100 according to embodiments of the present invention, on the one hand by making each circular arc magnet 2 along towards rotor core 1 Central axis direction it is recessed, the simple structure of such magnet 2 simplifies the processing to magnet 2, improve processing magnet 2 When stock utilization;On the other hand by making the maximum outline radius R1 of rotor core 1 with each magnet 2 away from rotor The radius R2 of circle meets where the arc surface of the side of the central axis of iron core 1:0.84≤R2/R1≤0.88, is conducive to optimization The structure snd size of rotor 100, so as to be conducive to improving the performance of motor.In addition, meeting the thickness H and R1 of magnet 2:0.22 ≤ H/R1≤0.245, is conducive to improving the anti-demagnetization capability of magnet 2, when rotor 100 is with motor, is conducive to improving electricity The reliability of machine work, when motor is used on the compressor, is conducive to improving the reliability of compressor operating.
In some embodiments of the invention, as shown in fig. 6, the Breadth Maximum of magnet 2 is L, that is to say, that magnet 2 The ultimate range between two end faces in the radial direction is L, and L meets:1.28≤L/R1≤1.34.Thus, optimization is conducive to Air-gap flux amount, so that air-gap field more levels off to sine, so as to further improve the performance of motor.
Alternatively, the value of L/R1 is:1.29th, 1.30,1.315,1.32,1.333 etc., so as to further optimize air gap magnetic Flux.
Some embodiments of the invention, as shown in figure 4, when magnet 2 coordinates in mounting groove 11, the width of magnet 2 Degree direction on side side and mounting groove 11 just to the ultimate range between the side wall of the side side be D, that is, Say, the side side in the radial direction of magnet 2 and mounting groove 11 just between the side wall of the side side it is maximum away from From being D, D meets:0.25mm≤D≤0.35mm.Thus, by the side side on the width for causing magnet 2 and installation Groove 11 just between the side wall of the side side ultimate range D meet:0.25mm≤D≤0.35mm, can effectively control The size of the leakage magnetic flux of magnet processed 2.
Further, 0.28mm≤D≤0.33mm.More preferably, 0.29mm≤D≤0.31mm.
In some embodiments of the invention, rotor core 1 is formed by multiple rotor punchings stacking.For example, multiple annulars The punching of rotor 100 stack gradually to form rotor core 1 in the vertical direction.It is understood that above-below direction herein It is the axial direction of rotor core 1.Alternatively, rotor punching is silicon steel sheet.
Alternatively, the magnet 2 that is arranged on that the axial two ends of each magnet 2 have lead angle 21, lead angle 21 respectively is arranged on peace Guide effect can be played during in tankage 11.
The structure of a rotor for specific embodiment 100 of the invention is described in detail below with reference to Fig. 1-Fig. 6.
As Figure 1-Figure 4, the rotor 100 of the embodiment of the present invention includes rotor core 1 and four ferrite lattices 2.Turn Sub- iron core 1 is formed by multiple silicon steel sheets stacking.
Specifically, the cross section of rotor core 1 is formed as annular shape, and rotor core 1 is provided with four along its circumference Direction uniform intervals set and with the mounting groove 11 of the form fit of ferrite lattice 2, axle of each mounting groove 11 in rotor core 1 Rotor core 1 is extended upward through, four ferrite lattices 2 are corresponded with four mounting grooves 11, and each ferrite lattice 2 is accommodated In corresponding mounting groove 11.
As shown in figs 1 to 6, each ferrite lattice 2 is recessed with general along the direction of the central axis towards rotor core 1 Ferrite lattice 2 is configured to circle-arc profile.
The outline radius of rotor core 1 is R1, and R1 is 30mm.Each ferrite lattice 2 away from rotor core 1 The radius of circle is R2 where the arc surface of the side of heart axis, and R2 is 25.9mm.
As shown in fig. 6, the thickness of ferrite lattice 2 is H, H is 6.9mm, and the Breadth Maximum of ferrite lattice 2 is L, and L is 39.4mm。
As shown in figure 4, when ferrite lattice 2 coordinates in mounting groove 11, on the width of ferrite lattice 2 one Side side and mounting groove 11 are D just to the ultimate range between the side wall of the side side, and D is 0.304mm.
Rotor 100 according to embodiments of the present invention, the magnetic flux density required for each discharge capacity refrigerator compressor motor is ensured While size meets the requirements, the size of the leakage magnetic flux of magnet 2 can be efficiently controlled, air-gap field more levels off to sine, has Beneficial to the lifting of electric efficiency, the anti-demagnetization capability of magnet 2 is strong, and magnet 2 simple structure, simplify to magnet 2 plus Work, improves stock utilization during processing magnet 2.
Motor according to embodiments of the present invention, including the rotor 100 in above-described embodiment.
Motor according to embodiments of the present invention, by setting above-mentioned rotor 100, is conducive to improving the reliability of motor work Property, reduces cost.
Compressor according to embodiments of the present invention, including the motor in above-described embodiment.
Compressor according to embodiments of the present invention, by setting above-mentioned motor, be conducive to improve compressor operating can By property.
Refrigerator according to embodiments of the present invention, including the compressor in above-described embodiment.
Refrigerator according to embodiments of the present invention, by setting above-mentioned compressor, is conducive to improving the reliability of refrigerator work Property.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described Structure, material or feature are contained at least one embodiment of the invention or example.In this manual, to above-mentioned term Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy Point can in an appropriate manner be combined in one or more any embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that:Not Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this The scope of invention is limited by claim and its equivalent.

Claims (10)

1. a kind of rotor, it is characterised in that including:
Rotor core, the cross section of the rotor core is formed as annular shape, and the rotor core is provided with multiple along its week To the mounting groove that direction uniform intervals are set, each described mounting groove extends upward through the rotor iron in the axle of the rotor core Core;
Multiple magnet, multiple magnet are corresponded with multiple mounting grooves, and each described magnet is contained in accordingly In the mounting groove, each described magnet is recessed with by the magnet structure along the direction of the central axis towards the rotor core Cause circle-arc profile;
Wherein, the maximum outline radius of the rotor core be R1, each magnet away from the rotor core The radius of circle where the arc surface of the side of heart axis is R2, and the thickness of the magnet is H, and described R1, R2 and H meet:0.84 ≤ R2/R1≤0.88,0.22≤H/R1≤0.245.
2. rotor according to claim 1, it is characterised in that the Breadth Maximum of the magnet is L, L meets:1.28≤L/ R1≤1.34。
3. rotor according to claim 1, it is characterised in that described when the magnet coordinates in the mounting groove Side side and the mounting groove on the width of magnet just to the ultimate range between the side wall of the side side It is D, D meets:0.25mm≤D≤0.35mm.
4. rotor according to claim 1, it is characterised in that the magnet is four.
5. rotor according to claim 1, it is characterised in that the magnet is ferrite lattice.
6. rotor according to claim 1, it is characterised in that the rotor core is formed by multiple rotor punchings stacking.
7. rotor according to claim 1, it is characterised in that the rotor punching is silicon steel sheet.
8. a kind of motor, it is characterised in that including the rotor according to any one of claim 1-7.
9. a kind of compressor, it is characterised in that including motor according to claim 8.
10. a kind of refrigerator, it is characterised in that including compressor according to claim 9.
CN201710157785.7A 2017-03-16 2017-03-16 Rotor, motor, compressor and refrigerator Pending CN106877534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710157785.7A CN106877534A (en) 2017-03-16 2017-03-16 Rotor, motor, compressor and refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710157785.7A CN106877534A (en) 2017-03-16 2017-03-16 Rotor, motor, compressor and refrigerator

Publications (1)

Publication Number Publication Date
CN106877534A true CN106877534A (en) 2017-06-20

Family

ID=59171339

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710157785.7A Pending CN106877534A (en) 2017-03-16 2017-03-16 Rotor, motor, compressor and refrigerator

Country Status (1)

Country Link
CN (1) CN106877534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107591911A (en) * 2017-08-30 2018-01-16 广东威灵电机制造有限公司 Rotor punching, rotor core, motor and compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107591911A (en) * 2017-08-30 2018-01-16 广东威灵电机制造有限公司 Rotor punching, rotor core, motor and compressor

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