CN102111055A - Outer rotor type permanent-magnet machine - Google Patents
Outer rotor type permanent-magnet machine Download PDFInfo
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- CN102111055A CN102111055A CN2011100680340A CN201110068034A CN102111055A CN 102111055 A CN102111055 A CN 102111055A CN 2011100680340 A CN2011100680340 A CN 2011100680340A CN 201110068034 A CN201110068034 A CN 201110068034A CN 102111055 A CN102111055 A CN 102111055A
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- permanent magnet
- magnetic shoe
- rotor type
- stator
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Abstract
The invention provides an outer rotor type permanent-magnet machine comprising a magnetic shoe (1), a stator (2), a casing (3) and a position sensor (4), wherein the magnetic shoe (1) is mounted in a mounting step inside the casing (3); and the stator (2) is mounted in the casing (3) corresponding to the magnetic shoe (1). The outer rotor type permanent-magnet machine is characterized in that a ring-shaped permanent magnet (5) is arranged on the end surface of the turned-over edge of the casing (3); and the position sensor (4) is mounted on the end surface of the stator (2) corresponding to the ring-shaped permanent magnet (5). The outer rotor type permanent-magnet machine adopts the structure that the ring-shaped permanent magnet is arranged on the end surface of the turned-over edge of the casing and the position sensor is mounted on the end surface of the stator corresponding to the ring-shaped permanent magnet, so that the position sensor can feed position signals of the rotor back to a controller through sensing the magnetic field of the permanent magnet, thereby completely eliminating the need for taking the pole pairs of the rotor magnetic shoe and the rotational speed of the motor into consideration, reasonably reducing the pole pairs of the magnetic shoe, further not only avoiding excessive torque pulse in low-speed running of the motor, but also greatly lowering the loss of a controller switch in high-speed running state, and lowering the cost of the motor and the controller since the requirements to controller hardware is relatively low.
Description
Technical field
The present invention relates to a kind of external rotor type permanent magnetism motor, belong to the improvement technology of external rotor type permanent magnetism motor.
Background technology
Existing external rotor type permanent magnetism motor comprises casing, magnetic shoe, stator and position transducer, wherein magnetic shoe is close on the inwall and the installation step of device in casing of casing, the corresponding magnetic shoe device of stator is in casing, position transducer adopts Hall element with low cost, and corresponding magnetic shoe is installed on the stator, and the polarity of the magnetic field of position transducer by the induction magnetic shoe is to the position signalling of the controller feedback rotor of motor; There is following defective in above-mentioned external rotor type permanent magnetism motor: during motor slow-speed of revolution operation, require the number of pole-pairs of motor magnetic tile many as far as possible, so that position transducer can feed back more rotor-position signal, during the motor high-speed cruising, then require the number of pole-pairs of motor magnetic tile the least possible, so that the reference voltage frequency of controller can be too not high.As increase the number of pole-pairs of motor magnetic tile for the needs that satisfy motor slow-speed of revolution when operation, the corresponding cost that will increase motor, when the motor high-speed cruising, also can increase the loss of controller switches, therefore improved the quality of hardware requirement of controller, thereby the cost of electric machine controller is and then improved; Needs when moving for satisfying the high rotating speed of motor as list reduce the number of pole-pairs of motor magnetic tile, can make electric machine controller very few by the rotor-position signal that position transducer obtains, and torque pulsation is excessive in the time of will causing the motor operation.
Summary of the invention
The objective of the invention is to consider the problems referred to above and provide a kind of reasonable in design, can not only satisfy motor at a high speed and can both obtain more rotor-position signal and lower-cost external rotor type permanent magnetism motor during low cruise.
Technical scheme of the present invention is: a kind of external rotor type permanent magnetism motor, comprise magnetic shoe, stator, casing and position transducer, wherein on the installation step of magnetic shoe device in casing, the corresponding magnetic shoe device of stator is in casing, it is characterized in that device has annular permanent magnet on the flange end face of described casing, the corresponding annular permanent magnet body device of position transducer is on the end face of stator.
Described annular permanent magnet is a monolithic construction.
Described annular permanent magnet is spliced relatively by two identical arc-shaped permanent magnet ports of above radius becomes monolithic construction.
Described annular permanent magnet is made by rubber or soft permanent magnetic material.
Described annular permanent magnet is bonded on the flange end face of casing.
The present invention adopts and install annular permanent magnet on the flange end face of casing, the structure of position transducer corresponding intrument on stator faces, make position transducer can feed back the position signalling of rotor to controller by the magnetic field of induction permanent magnet, need not consider the number of pole-pairs and the rotating speed of motor of rotor magnetic shoe fully, thereby reasonably reduced the number of pole-pairs of magnetic shoe, the excessive problem of torque pulsation in the time of can not only avoiding the motor low cruise, and when greatly reducing high-speed cruising to the loss of controller switches, lower to the requirement of controller hardware simultaneously, the corresponding cost that has reduced motor and controller.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 is the schematic diagram of monolithic construction for annular permanent magnet of the present invention;
Fig. 3 is the schematic diagram of split-type structural for annular permanent magnet of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1:
As shown in Figure 1, this real external rotor type permanent magnetism motor, comprise magnetic shoe 1, stator 2, casing 3 and position transducer 4, wherein on the installation step of magnetic shoe 1 device in casing 3, stator 2 corresponding magnetic shoe 1 devices are in casing 3, device has annular permanent magnet 5 on the flange end face of described casing 3, and position transducer 4 corresponding annular permanent magnets 5 are installed on the end face of stator 1.In the present embodiment, described annular permanent magnet 5 is bonded on the end face of casing 3.
As shown in Figure 2, described annular permanent magnet 5 is a monolithic construction, is made by rubber or soft permanent magnetic material.
The invention enables position transducer can feed back the position signalling of rotor to controller by the magnetic field of induction permanent magnet, need not consider the number of pole-pairs and the rotating speed of motor of rotor magnetic shoe fully, thereby reasonably reduced the number of pole-pairs of magnetic shoe, the excessive problem of torque pulsation in the time of can not only avoiding the motor low cruise, and when greatly reducing high-speed cruising to the loss of controller switches, lower to the requirement of controller hardware simultaneously, the corresponding cost that has reduced motor and controller.
Embodiment 2:
The present embodiment difference from Example 1 is: as shown in Figure 3,18 identical arc-shaped permanent magnet 51 ports of radius splice relatively becomes monolithic construction.Other structure is identical with embodiment 1.
Claims (5)
1. external rotor type permanent magnetism motor, comprise magnetic shoe (1), stator (2), casing (3) and position transducer (4), wherein on the installation step of magnetic shoe (1) device in casing (3), the corresponding magnetic shoe of stator (2) (1) device is in casing (3), it is characterized in that device has annular permanent magnet (5) on the flange end face of described casing (3), the corresponding annular permanent magnet of position transducer (4) (5) installs on the end face of stator (1).
2. external rotor type permanent magnetism motor according to claim 1 is characterized in that described annular permanent magnet (5) is monolithic construction.
3. external rotor type permanent magnetism motor according to claim 2 is characterized in that described annular permanent magnet (5) becomes monolithic construction by two identical relative splicings of arc-shaped permanent magnet (51) ports of above radius.
4. according to each described external rotor type permanent magnetism motor of claim 1 to 3, it is characterized in that described arc-shaped permanent magnet (5) made by rubber or soft permanent magnetic material.
5. according to each described external rotor type permanent magnetism motor of claim 1 to 4, it is characterized in that described annular permanent magnet (5) is bonded on the flange end face of casing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100680340A CN102111055A (en) | 2011-03-22 | 2011-03-22 | Outer rotor type permanent-magnet machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100680340A CN102111055A (en) | 2011-03-22 | 2011-03-22 | Outer rotor type permanent-magnet machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102111055A true CN102111055A (en) | 2011-06-29 |
Family
ID=44175116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100680340A Pending CN102111055A (en) | 2011-03-22 | 2011-03-22 | Outer rotor type permanent-magnet machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102111055A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041619A (en) * | 2015-06-26 | 2015-11-11 | 广州万宝集团压缩机有限公司 | Oil pumping structure for outer rotor refrigerating compressor |
| CN108257800A (en) * | 2018-03-22 | 2018-07-06 | 中电普瑞电力工程有限公司 | A kind of quick magnetic force operating mechanism of mechanical switch |
| CN108496300A (en) * | 2016-02-22 | 2018-09-04 | 深圳市大疆灵眸科技有限公司 | Motor position senses |
| CN109995158A (en) * | 2018-01-03 | 2019-07-09 | 财团法人工业技术研究院 | Outer rotor-type motor and its assemble method |
| CN112615522A (en) * | 2020-11-30 | 2021-04-06 | 珠海格力电器股份有限公司 | Magnetic gear assembly and composite motor with same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5410201A (en) * | 1990-06-01 | 1995-04-25 | Mitsubishi Denki Kabushiki Kaisha | Electric Motor |
| CN101071974A (en) * | 2006-05-12 | 2007-11-14 | 杨光笋 | Direct current brushless motor Hall device sensor |
| CN101931303A (en) * | 2010-08-09 | 2010-12-29 | 湖州永昌贝诗讬电器实业有限公司 | Outer rotor brushless motor for impeller washing machine |
-
2011
- 2011-03-22 CN CN2011100680340A patent/CN102111055A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5410201A (en) * | 1990-06-01 | 1995-04-25 | Mitsubishi Denki Kabushiki Kaisha | Electric Motor |
| CN101071974A (en) * | 2006-05-12 | 2007-11-14 | 杨光笋 | Direct current brushless motor Hall device sensor |
| CN101931303A (en) * | 2010-08-09 | 2010-12-29 | 湖州永昌贝诗讬电器实业有限公司 | Outer rotor brushless motor for impeller washing machine |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041619A (en) * | 2015-06-26 | 2015-11-11 | 广州万宝集团压缩机有限公司 | Oil pumping structure for outer rotor refrigerating compressor |
| CN108496300A (en) * | 2016-02-22 | 2018-09-04 | 深圳市大疆灵眸科技有限公司 | Motor position senses |
| US10903723B2 (en) | 2016-02-22 | 2021-01-26 | Sz Dji Osmo Technology Co., Ltd. | Motor positional sensing |
| CN108496300B (en) * | 2016-02-22 | 2022-05-27 | 深圳市大疆灵眸科技有限公司 | Motor position sensing |
| US11411472B2 (en) | 2016-02-22 | 2022-08-09 | Sz Dji Osmo Technology Co., Ltd. | Motor positional sensing |
| CN109995158A (en) * | 2018-01-03 | 2019-07-09 | 财团法人工业技术研究院 | Outer rotor-type motor and its assemble method |
| CN108257800A (en) * | 2018-03-22 | 2018-07-06 | 中电普瑞电力工程有限公司 | A kind of quick magnetic force operating mechanism of mechanical switch |
| CN108257800B (en) * | 2018-03-22 | 2023-11-07 | 中电普瑞电力工程有限公司 | Quick magnetic force operating mechanism for mechanical switch |
| CN112615522A (en) * | 2020-11-30 | 2021-04-06 | 珠海格力电器股份有限公司 | Magnetic gear assembly and composite motor with same |
| CN112615522B (en) * | 2020-11-30 | 2021-11-16 | 珠海格力电器股份有限公司 | Magnetic gear assembly and composite motor with same |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110629 |