CN105720716A - Tangential permanent magnetic rotor and motor - Google Patents
Tangential permanent magnetic rotor and motor Download PDFInfo
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- CN105720716A CN105720716A CN201410735813.5A CN201410735813A CN105720716A CN 105720716 A CN105720716 A CN 105720716A CN 201410735813 A CN201410735813 A CN 201410735813A CN 105720716 A CN105720716 A CN 105720716A
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- rotor
- rotating shaft
- air
- permanent magnet
- iron core
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Abstract
The invention discloses a tangential permanent magnetic rotor and a motor. The tangential permanent magnetic rotor is characterized in that 2N permanent magnet grooves (2) are uniformly distributed along an iron core (1) in the circumferential radial shape; one side, being close to an air gap, of each permanent magnet groove (2) is enclosed, and one side, being close to a spindle (7), of the permanent magnet groove (2) is communicated with an air flux barrier groove (3); each air flux barrier groove (3) is communicated with two adjacent permanent magnet grooves (2); the number of the air flux barrier grooves is equal to the number of pole-pairs of the rotor; the N air flux barrier grooves (3) divide the iron core (1) into one spindle coordination part (4); N bridge joints (6) are arranged between the spindle coordination part (4) and a pole part (5); the number of the bridge joints is equal to the number of pole-pairs of the rotor; and two ends of the iron core (1) are fixed on the spindle (7) through a pressing plate (8) made of nonmagnetic material, and has no gaps with the end surface of the iron core (1) in the axial direction. The tangential permanent magnetic rotor has the advantages of being simple and reasonable in structure, effectively reducing leakage flux, improving the utilization ratio of the permanent magnet, and guaranteeing the mechanical strength of a punching sheet, and being convenient for assembling at the same time.
Description
Technical field
The invention belongs to technical field of motors, relate to a kind of tangential permanent magnetic rotor and motor.
Background technology
Present stage laundry owner's motor permanent magnetic brushless many employings permanent magnet Surface Mount adds the rotor structure of steel bushing.Corresponding washing and two kinds of operating modes of dehydration, motor speed difference decades of times.Owing to the weak magnetism speed expansion ability of permanent magnet surface-mounted rotor is more weak, the turnover rotating speed of motor is usually designed to high value, and this has resulted in electric efficiency during washing and has reduced, say, that the efficiency of washing and dehydration is difficult to take into account, and needs tradeoff design.
It is known that permanent magnet built-in rotor structure salient pole is than big, it is easy to weak magnetism speed expansion, mechanical strength is high, is highly suitable for the occasion that this needs of washing machine run up simultaneously.Built-in rotor structure is divided into radial, tangential and hybrid, and when rotor pole logarithm is more, tangential structure can provide bigger useful flux, but leakage field is more bottom permanent magnet, as shown in Figure 1.
For this problem, utility model patent 201220032377.1 discloses a kind of built-in tangential permanent magnetic rotor, including armature spindle, axle sleeve, rotor core, non-magnetic axle sleeve is set on armature spindle, rotor core is connected to axle sleeve periphery, rotor core is put together by polylith iron core sub-block, and iron core sub-block adjacent in polylith iron core sub-block leaves interval trough to each other, is provided with magnetic shoe in described interval trough.Utility model patent 201220448338.X discloses a kind of tangential magnetic field brushless DC motor rotor structure with magnetic shield, including rotating shaft, rotor block and magnet steel, rotor block is set in rotating shaft, rotor block has rectangular channel along radial direction, described rectangular channel is circumferentially uniformly distributed, and in rectangular channel mounting magnetic steel, it is characterised in that: described rotating shaft is made up of permeability magnetic material, being provided with magnetic shield between rotating shaft and rotor block, this magnetic shield is made up of non-magnet material.Above two utility model patents all adopt magnetic shield and iron core assembled, and structure, complex process, difficulty of processing is big, relatively costly, limits its range of application.
For disadvantages mentioned above, utility model patent 201210005017.7 discloses the tangential rotor of a kind of electric rotating machine, including the rotor being made up of rotating shaft and laminate core, be provided with in laminate core along rotating shaft axis rotate and relatively this axis along several permanent-magnet pole portions of rotor circumferential magnetization, its permanent-magnet pole portion is embedded in laminate core by permanent magnet trough, the nearly air gap side of described permanent magnet trough is connected with laminate core or disconnects, and the circumferential width at the interval that its nearly rotating shaft side is mutual is 0.1-5 millimeter.The opposite polarity in adjacent permanent magnetic poles portion.The circumferential width at the interval that permanent magnet trough nearly rotating shaft side is mutual is 0.4-3 millimeter.Utility model patent 201120358011.9 discloses a kind of magneto, rotor punching and Magnet thereof including metal plate punching molding, rotor punching correspondence Magnet is provided with the built-in groove of more than one Magnet and glue filling opening, Magnet is inserted in the built-in groove of Magnet, and it is integrated encapsulating setting with punching, collectively form a p-m rotor.Above two utility model patents simplify tangential rotor structure, but all remain traditional " every magnetic bridge ", so-called " every magnetic bridge " is actually and provides loop to leakage field, in unhelpful every magnetic, its existence is intended merely to the integrity ensureing lamination structure, and therefore the size " every magnetic bridge " is by mechanical strength and the dual restriction of magnetism isolating effect.Such as, in above-mentioned Section 1 patent, " every magnetic bridge " width is 0.4-3 millimeter, and then mechanical strength is too poor and affect punch die service life to take 0.4 millimeter, and then leakage field is too serious to take 3 millimeters；Section 2 patent even needs encapsulating to increase the structural strength of rotor.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is proposed to a kind of tangential permanent magnetic rotor and motor, this rotor structure advantages of simple, be effectively reduced leakage field, improve permanent magnet utilization rate, ensure the mechanical strength of punching simultaneously.
For reaching foregoing invention purpose, the present invention provides the first technical scheme: a kind of tangential permanent magnetic rotor, its edge radial uniform 2N permanent magnet trough of circumference unshakable in one's determination, the nearly air gap of permanent magnet trough is one side closed, nearly rotating shaft side is connected with air magnet isolation tank, and each air magnet isolation tank connection two adjacent permanent magnets groove, this air magnet isolation tank number is equal to rotor pole logarithm.
Preferably, iron core is separated out a rotating shaft mating part by described N number of air magnet isolation tank, and rotating shaft mating part and pole parts have N place to bridge, and this bridge joint number is equal to rotor pole logarithm.
Preferably, the pressing plate that described two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft, gapless axial with end face of iron core.
For reaching foregoing invention purpose, the present invention provides the second technical scheme: a kind of motor with tangential permanent magnetic rotor, described tangential permanent magnetic rotor includes iron core, edge radial uniform 2N the permanent magnet trough of circumference unshakable in one's determination, is placed on corresponding permanent magnet trough and forms the rotating shaft at the permanent magnet of 2N rotor magnetic pole of alternating polarity, the N number of air magnet isolation tank connecting two adjacent permanent magnets groove and traverse center unshakable in one's determination, the nearly air gap of wherein said permanent magnet trough is one side closed, nearly rotating shaft side is connected with air magnet isolation tank, and air magnet isolation tank number is equal to rotor pole logarithm.
Preferably, iron core is separated out a rotating shaft mating part and pole parts by described N number of air magnet isolation tank, and rotating shaft mating part and pole parts have N place to bridge, and the number of this bridge joint is equal to rotor pole logarithm, this bridge joint is between two adjacent air magnet isolation tanks, and the width of bridge joint is preferably at least more than the width half of permanent magnet trough.
Preferably, the pressing plate that described two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft, and pressing plate and the axial gapless of end face of iron core.
Preferably, it is motor for washer.
Preferably, the sectional area of described rotating shaft mating part is circular or square.
Preferably, described air magnet isolation tank is centered around the outside of rotating shaft, and the length half more than permanent magnet trough length the total length less than permanent magnet trough length, and the width of air magnet isolation tank is less than or equal to the width of permanent magnet trough, and air magnet isolation tank is preferably circular arc.
The invention has the beneficial effects as follows:
The present invention utilizes air magnet isolation tank connection two adjacent permanent magnets groove, seals in air part, improves the magnetic resistance of leakage magnetic circuit, be effectively reduced leakage field, improve permanent magnet utilization rate in leakage field loop.
Rotating shaft mating part of the present invention bridges without acting the effect limiting leakage field with pole parts, and therefore desirable bigger width is to ensure punching mechanical strength.
The pressing plate that iron core two ends of the present invention are made by non-magnet material can limit permanent magnet axial displacement, simultaneously facilitates duplicate removal correction dynamic balancing.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art one tangential p-m rotor.
Fig. 2 is the structural representation of one embodiment of the invention
Fig. 3 is perspective view of an embodiment of the present invention.
Fig. 4 is the structural representation of further embodiment of this invention.
1 iron core, 2 permanent magnet trough, 3 air magnet isolation tanks, 4 rotating shaft mating parts, 5 pole parts, 6 bridge joints, 7 rotating shafts, 8 pressing plates in figure.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
First embodiment
Referring to Fig. 2, the present invention provides the first embodiment of a kind of tangential permanent magnetic rotor, and it includes unshakable in one's determination 1,2N permanent magnet trough 2, is placed on the permanent magnet of corresponding permanent magnet trough 2, N number of air magnet isolation tank 3 of connection two adjacent permanent magnets groove 2 and pass the rotating shaft 7 at 1 center unshakable in one's determination.Along 1 radial uniform 2N the permanent magnet trough 2 of circumference unshakable in one's determination, in permanent magnet trough 2, lay 2N permanent magnet to form 2N rotor magnetic pole of alternating polarity according to the mode that same polarity is relative.The nearly air gap of permanent magnet trough 2 is one side closed, and nearly rotating shaft 7 side is connected with air magnet isolation tank 3, and each air magnet isolation tank 3 circumferentially connects two adjacent permanent magnets groove 2.
Iron core is separated out the rotating shaft mating part 4 of a sub-circular by N number of air magnet isolation tank 3, and rotating shaft mating part 4 and pole parts 5 have N place bridge joint 6.
The pressing plate 8 that 1 two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft 7, and 1 end face axial gapless unshakable in one's determination, as shown in Figure 3.
Shown in Fig. 1 against existing technologies, it is exactly numerically air magnet isolation tank 3 number that prior art is embodied in, bridge 6 place's numbers equal to rotor number of poles.The present invention compares the most significant difference of prior art and is in that air magnet isolation tank 3 number, bridges 6 place's numbers equal to rotor pole logarithm, bridge joint 6 width thus can be significantly increased, strengthen rotor mechanical strength, effectively limit leakage field simultaneously.
Second embodiment
Referring to Fig. 4, the present invention provides the second embodiment of a kind of tangential permanent magnetic rotor, with first embodiment, it differs primarily in that described air magnet isolation tank 3 tangentially connects two adjacent permanent magnets groove 2, and its radial dimension strengthens.Iron core is separated out the rotating shaft mating part 4 of a squarish by N number of air magnet isolation tank 3, bridges 6 sizes and widens.Other not described parts, same to first embodiment, it is not repeated.
Simultaneously, tangential permanent magnetic rotor structure according to above-described embodiment, the present invention also provides for a kind of motor with tangential permanent magnetic rotor, namely tangential permanent magnetic rotor includes unshakable in one's determination 1, along 1 radial uniform 2N the permanent magnet trough 2 of circumference unshakable in one's determination, it is placed on corresponding permanent magnet trough 2 and forms the permanent magnet of 2N rotor magnetic pole of alternating polarity, N number of air magnet isolation tank 3 of connection two adjacent permanent magnets groove 2, and the rotating shaft 7 through 1 center unshakable in one's determination, the wherein said nearly air gap of permanent magnet trough 2 is one side closed, nearly rotating shaft 7 side is connected with air magnet isolation tank 3, and air magnet isolation tank 3 number is equal to rotor pole logarithm.Iron core 1 is separated out a rotating shaft mating part 4 and pole parts 5 by N number of air magnet isolation tank 3, and rotating shaft mating part 4 and pole parts 5 have N place bridge joint 6, and the number of this bridge joint 6 is equal to rotor pole logarithm.The pressing plate 8 that 1 two ends unshakable in one's determination are made by non-magnet material is fixed in rotating shaft 7, and pressing plate 8 and 1 end face axial gapless unshakable in one's determination.In the present embodiment, it is preferably washing machine permanent magnetic brushless.The sectional area of rotating shaft mating part 4 is preferably circular or square.
Although the preferred embodiment of the present invention being described above in conjunction with accompanying drawing; but the invention is not limited in above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; it is not restrictive; those of ordinary skill in the art is under the enlightenment of the present invention; without departing under present inventive concept and scope of the claimed protection situation, it is also possible to making a lot of form, these belong within protection scope of the present invention.
Claims (8)
1. a tangential permanent magnetic rotor, it is characterized in that, along radial uniform 2N the permanent magnet trough (2) of (1) circumference unshakable in one's determination, the nearly air gap of permanent magnet trough (2) is one side closed, nearly rotating shaft (7) side is connected with air magnet isolation tank (3), and each air magnet isolation tank (3) connection two adjacent permanent magnets groove (2), this air magnet isolation tank number is equal to rotor pole logarithm.
2. a kind of tangential permanent magnetic rotor according to claim 1, it is characterized in that, iron core (1) is separated out a rotating shaft mating part (4) by described N number of air magnet isolation tank (3), rotating shaft mating part (4) and pole parts (5) have N place bridge joint (6), and the number of this bridge joint is equal to rotor pole logarithm.
3. tangential permanent magnetic rotor according to claim 1, it is characterized in that, the pressing plate (8) that described iron core (1) two ends are made by non-magnet material is fixed in rotating shaft (7), with (1) end face axial gapless unshakable in one's determination.
4. a motor with tangential permanent magnetic rotor, it is characterized in that, described tangential permanent magnetic rotor includes iron core (1), along radial uniform 2N the permanent magnet trough (2) of (1) circumference unshakable in one's determination, it is placed on corresponding permanent magnet trough (2) and forms the permanent magnet of 2N rotor magnetic pole of alternating polarity, N number of air magnet isolation tank (3) of connection two adjacent permanent magnets groove (2), and the rotating shaft (7) through (1) center unshakable in one's determination, the nearly air gap of wherein said permanent magnet trough (2) is one side closed, nearly rotating shaft (7) side is connected with air magnet isolation tank (3), and air magnet isolation tank (3) number is equal to rotor pole logarithm.
5. motor according to claim 4, it is characterized in that, iron core (1) is separated out a rotating shaft mating part (4) and pole parts (5) by described N number of air magnet isolation tank (3), and rotating shaft mating part (4) and pole parts (5) have N place bridge joint (6), and the number of this bridge joint (6) is equal to rotor pole logarithm.
6. motor according to claim 4, it is characterized in that, the pressing plate (8) that described iron core (1) two ends are made by non-magnet material is fixed in rotating shaft (7), and pressing plate (8) and (1) end face axial gapless unshakable in one's determination.
7. motor according to claim 4, it is characterised in that it is motor for washer.
8. motor according to claim 5, it is characterised in that the sectional area of described rotating shaft mating part (4) is circular or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735813.5A CN105720716A (en) | 2014-12-05 | 2014-12-05 | Tangential permanent magnetic rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735813.5A CN105720716A (en) | 2014-12-05 | 2014-12-05 | Tangential permanent magnetic rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105720716A true CN105720716A (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410735813.5A Pending CN105720716A (en) | 2014-12-05 | 2014-12-05 | Tangential permanent magnetic rotor and motor |
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| Country | Link |
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| CN (1) | CN105720716A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471140A (en) * | 2015-12-29 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor iron core and motor equipped with same |
| CN106374652A (en) * | 2016-09-26 | 2017-02-01 | 威灵（芜湖）电机制造有限公司 | Rotor iron core, rotor and self-starting permanent magnet synchronous motor |
| CN109067041A (en) * | 2018-09-19 | 2018-12-21 | 吴凯 | A kind of rotor |
| CN109643921A (en) * | 2016-09-05 | 2019-04-16 | 三菱电机株式会社 | Rotating electric machine |
| WO2019227932A1 (en) * | 2018-05-29 | 2019-12-05 | 华为技术有限公司 | Motor rotor device and motor |
| CN112701823A (en) * | 2020-12-02 | 2021-04-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, motor and air conditioning unit |
| CN113131701A (en) * | 2021-04-16 | 2021-07-16 | 哈尔滨工业大学 | Double-winding double-magnetism-gathering type electric stepless speed changer |
Citations (5)
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|---|---|---|---|---|
| JPH05137304A (en) * | 1991-11-14 | 1993-06-01 | Fanuc Ltd | Synchronous motor capable of reducing cogging torque |
| EP0641059A1 (en) * | 1993-02-15 | 1995-03-01 | Fanuc Ltd. | Rotor of synchronous motor |
| US5829120A (en) * | 1993-02-15 | 1998-11-03 | Fanuc, Ltd. | Method for manufacturing a rotor for synchronous motor |
| DE10153750A1 (en) * | 2001-10-31 | 2003-05-22 | Siemens Ag | Rotor for PM synchronous machine |
| CN204258475U (en) * | 2014-12-05 | 2015-04-08 | 莱克电气股份有限公司 | Tangential permanent magnetic rotor and motor |
-
2014
- 2014-12-05 CN CN201410735813.5A patent/CN105720716A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05137304A (en) * | 1991-11-14 | 1993-06-01 | Fanuc Ltd | Synchronous motor capable of reducing cogging torque |
| EP0641059A1 (en) * | 1993-02-15 | 1995-03-01 | Fanuc Ltd. | Rotor of synchronous motor |
| US5829120A (en) * | 1993-02-15 | 1998-11-03 | Fanuc, Ltd. | Method for manufacturing a rotor for synchronous motor |
| DE10153750A1 (en) * | 2001-10-31 | 2003-05-22 | Siemens Ag | Rotor for PM synchronous machine |
| CN204258475U (en) * | 2014-12-05 | 2015-04-08 | 莱克电气股份有限公司 | Tangential permanent magnetic rotor and motor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471140A (en) * | 2015-12-29 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor iron core and motor equipped with same |
| CN105471140B (en) * | 2015-12-29 | 2019-08-27 | 珠海格力电器股份有限公司 | Rotor core and motor with it |
| CN109643921A (en) * | 2016-09-05 | 2019-04-16 | 三菱电机株式会社 | Rotating electric machine |
| CN109643921B (en) * | 2016-09-05 | 2020-10-27 | 三菱电机株式会社 | Rotating electrical machine |
| CN106374652A (en) * | 2016-09-26 | 2017-02-01 | 威灵（芜湖）电机制造有限公司 | Rotor iron core, rotor and self-starting permanent magnet synchronous motor |
| WO2019227932A1 (en) * | 2018-05-29 | 2019-12-05 | 华为技术有限公司 | Motor rotor device and motor |
| CN109067041A (en) * | 2018-09-19 | 2018-12-21 | 吴凯 | A kind of rotor |
| CN112701823A (en) * | 2020-12-02 | 2021-04-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core, motor and air conditioning unit |
| CN113131701A (en) * | 2021-04-16 | 2021-07-16 | 哈尔滨工业大学 | Double-winding double-magnetism-gathering type electric stepless speed changer |
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Application publication date: 20160629 |