CN107370322B - Dust collector motor and dust collector - Google Patents
Dust collector motor and dust collector Download PDFInfo
- Publication number
- CN107370322B CN107370322B CN201710734233.8A CN201710734233A CN107370322B CN 107370322 B CN107370322 B CN 107370322B CN 201710734233 A CN201710734233 A CN 201710734233A CN 107370322 B CN107370322 B CN 107370322B
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- motor
- rotor
- dust collector
- radial
- pair
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Electric Suction Cleaners (AREA)
Abstract
The invention relates to the technical field of dust collectors, in particular to a high-speed brushless dust collector motor adopting a magnetic suspension bearing and a dust collector. The invention relates to a dust collector motor, which comprises a stator and a rotor rotationally arranged in the stator, wherein the dust collector motor is provided with a magnetic suspension bearing for suspending the rotor in the stator, and the rotor of the dust collector motor is not contacted with any object when in operation. The invention relates to a dust collector with the dust collector motor, which comprises a controller, wherein the controller actively adjusts the speed of a rotor of the dust collector motor according to the load in the dust collector. The motor of the dust collector and the dust collector can overcome the problem that the rotating speed of the existing motor cannot be increased due to the limitation of a bearing, the operation is reliable, the service life is greatly prolonged, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of dust collectors, in particular to a high-speed brushless dust collector motor adopting a magnetic suspension bearing and a dust collector using the motor.
Background
The vacuum cleaner motor is required to have a small volume and a high rotational speed while ensuring low noise. At present, most of domestic and foreign main dust collector products adopt a series motor or a brush direct current motor, and in order to realize the miniaturization and the light weight of the volume and simultaneously meet the larger suction effect, the rotating speed is often required to be increased. However, such a motor generally comprises a casing, permanent magnetic steel, a carbon brush, a rotor and a rotor winding, and during operation, high-speed friction is generated between the carbon brush and a commutator while the rotor winding continuously switches current, which easily causes sparks to be generated between the carbon brush and the commutator, and if the rotating speed is too high, the carbon brush and the commutator are seriously worn, thereby affecting the service life of the product, or even being quickly burned out. If adopt conventional brushless motor as the dust catcher motor, under high rotational speed, its bearing leads to energy loss, temperature rising because of mechanical friction to cause the bearing to damage, make overhaul and change more frequently, lead to its unable high rotational speed that can bear of current brushless motor, make the rotational speed can only accomplish about 80000RPM to the utmost extent.
Disclosure of Invention
The invention aims to provide a dust collector motor and a dust collector, which can solve the problem that the rotating speed of the existing motor cannot be increased due to the limitation of a bearing, are reliable to operate, greatly prolong the service life and improve the working efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the invention provides a motor for a dust collector, which comprises a stator and a rotor rotatably arranged in the stator, wherein the motor for the dust collector is provided with a magnetic suspension bearing for suspending the rotor in the stator, and the rotor of the motor for the dust collector is not contacted with any object when in operation.
As a preferable mode of the vacuum cleaner motor, the rotor includes a rotor permanent magnet and a rotor shaft disposed along an axial direction of the rotor permanent magnet, and the magnetic suspension bearing includes at least one pair of radial magnetic bearings for radially adjusting a position of the rotor shaft and at least one pair of axial magnetic bearings for axially adjusting a position of the rotor shaft.
As a preferable mode of the vacuum cleaner motor, each pair of the radial magnetic bearings is symmetrically disposed with the rotor permanent magnet as a center.
As a preferable mode of the vacuum cleaner motor, each pair of the axial magnetic bearings is symmetrically disposed with the rotor permanent magnet as a center.
As a preferable mode of the vacuum cleaner motor, the radial magnetic bearing is disposed closer to the rotor permanent magnet than the axial magnetic bearing.
As a preferable mode of the vacuum cleaner motor, the vacuum cleaner further includes at least one pair of radial position sensors for monitoring positions of the rotor shaft in the radial direction, the pair of radial position sensors and the pair of radial magnetic bearings are arranged in one-to-one correspondence, and the radial position sensors are connected to a motor control board.
As a preferable mode of the vacuum cleaner motor, each pair of the radial position sensors is disposed between the pair of the radial magnetic bearings corresponding thereto, and is respectively located on both sides of the rotor permanent magnet.
As a preferable mode of the above cleaner motor, each pair of the radial magnetic bearings includes an upper radial magnetic bearing and a lower radial magnetic bearing provided on both sides of the rotor permanent magnet, each pair of the radial position sensors includes an upper radial position sensor and a lower radial position sensor, the upper radial position sensor corresponds to the upper radial magnetic bearing, and the lower radial position sensor corresponds to the lower radial magnetic bearing.
As a preferable mode of the vacuum cleaner motor, the vacuum cleaner further comprises an axial position sensor for monitoring the position of the rotor shaft in the axial direction, and the axial position sensor is connected with a motor control board.
As a preferable mode of the vacuum cleaner motor, an impeller is installed at one end of the rotor shaft, and the axial position sensor is disposed at the other end of the rotor shaft, which is far from the end where the impeller is installed.
As a preferable mode of the above cleaner motor, each pair of the axial magnetic bearings includes an upper axial magnetic bearing and a lower axial magnetic bearing provided on both sides of the rotor permanent magnet, and the axial position sensor is provided near one of the upper axial magnetic bearing and the lower axial magnetic bearing.
As a preferable mode of the cleaner motor, the cleaner motor is provided with a power supply for individually controlling the magnetic bearings.
In another aspect, the present invention also provides a vacuum cleaner having the vacuum cleaner motor, wherein the vacuum cleaner motor includes a controller that actively adjusts a speed of a rotor of the vacuum cleaner motor according to a magnitude of a load in the vacuum cleaner.
The invention has the beneficial effects that:
the invention provides a dust collector motor, which mainly aims at the problem that the rotation speed of a motor for a dust collector in the prior art cannot be increased due to the limitation of a bearing.
Drawings
Fig. 1 is a sectional view schematically showing the structure of a motor for a cleaner of the present invention.
In the figure: 1-motor control board; 2-an axial position sensor; 3-upper axial magnetic bearing; 4-upper radial magnetic bearing; 5-an upper radial position sensor; 6-a stator; 7-a rotor; 8-lower radial position sensor; 9-lower radial magnetic bearing; 10-lower axial magnetic bearing; 11-a rotor shaft; 12-impeller.
Detailed Description
The traditional motor is composed of a stator and a rotor, wherein the stator and the rotor are connected through a mechanical bearing or have mechanical contact, so that mechanical friction exists in the movement process of the rotor. Mechanical friction causes component abrasion, mechanical vibration and noise are generated, heating of the component can be caused, the performance of a lubricant is poor, the air gap of the motor is seriously uneven, a winding generates heat, and temperature rise is increased, so that the efficiency of the motor is reduced, and the service life of the motor is shortened.
The technical solution of the present invention is further explained by the following embodiments with reference to fig. 1.
As shown in fig. 1, an embodiment of the present invention provides a vacuum cleaner motor, which includes a stator 6 and a rotor 7 coaxial with the stator 6 and rotatably disposed in the stator 6, wherein the vacuum cleaner motor is provided with a magnetic suspension bearing for suspending the rotor 7 in the stator 6, and the rotor 7 of the vacuum cleaner motor does not contact with any object during operation.
It is through adopting the magnetic suspension principle, become non-mechanical contact with conventional mechanical contact's structure, therefore rotor 7 does not contact with any object when the operation, unsettled setting completely under magnetic bearing's magnetic force effect, can effectively avoid producing wearing and tearing, thereby can adapt to the high rotational speed demand of dust catcher well, the rotor can move the rotational speed of 150000RPM, have no mechanical wear, the energy consumption is low, small in noise, long-lived, need not lubricated, advantages such as oil pollution do not have, can overcome current motor and receive the problem that the bearing restriction can't improve the rotational speed, the operation is reliable, greatly prolonged life, and the work efficiency is improved.
Specifically, the rotor 7 includes a rotor permanent magnet and a rotor shaft 11 penetrating the stator 6 in an axial direction of the rotor permanent magnet, and the magnetic suspension bearing includes at least one pair of radial magnetic bearings for radially adjusting a position of the rotor shaft 11 and at least one pair of axial magnetic bearings for axially adjusting a position of the rotor shaft 11. Each pair of the radial magnetic bearings is respectively arranged on two sides of a rotor permanent magnet of the rotor 7, and each pair of the axial magnetic bearings is also respectively arranged on two sides of the rotor permanent magnet of the rotor 7.
The vacuum cleaner motor also comprises at least one pair of radial position sensors for monitoring the radial position of the rotor shaft 11, the pair of radial position sensors and the pair of radial magnetic bearings are arranged in a one-to-one correspondence mode, each pair of radial position sensors is arranged between the pair of corresponding radial magnetic bearings and is respectively positioned on two sides of the rotor permanent magnet, and the radial position sensors are connected with the motor control board 1. Specifically, each pair of the radial magnetic bearings includes an upper radial magnetic bearing 4 and a lower radial magnetic bearing 9 that may be disposed on both sides of the rotor permanent magnet, each pair of the radial position sensors includes an upper radial position sensor 5 and a lower radial position sensor 8, the upper radial position sensor 5 is disposed corresponding to the upper radial magnetic bearing 4, and the lower radial position sensor 8 is disposed corresponding to the lower radial magnetic bearing 9. Wherein the radial position sensor is used for adjusting the position of the rotor shaft 11 in the radial direction after the motor is started in cooperation with the radial magnetic bearing.
The vacuum cleaner motor further comprises an axial position sensor 2 used for monitoring the position of the rotor shaft 11 in the axial direction, an impeller 12 is installed at one end, extending outwards, of the rotor shaft 11, the axial position sensor 2 is arranged at the other end, far away from the rotor shaft 11, of the impeller 12, and the axial position sensor 2 is connected with a motor control board 1. Specifically, each pair of the axial magnetic bearings includes an upper axial magnetic bearing 3 and a lower axial magnetic bearing 10 disposed at both sides of the rotor permanent magnet, and the axial position sensor 2 may be disposed near one of the upper axial magnetic bearing 3 and the lower axial magnetic bearing 10. The axial position sensor is used in conjunction with the axial magnetic bearing to adjust displacement, deflection, vibration, etc. of the rotor shaft 11 occurring at the axial position.
The magnetic suspension bearing of the dust collector motor is controlled by matching the motor control board, when the motor is started, the position of the rotor shaft is detected by the radial position sensor and the axial position sensor, the deviation signal of the rotating shaft is transmitted to the controller of the motor control board, the controller performs proper operation on the position deviation signals detected by the radial position sensor and the axial position sensor, the operated control signal is converted into control current through the motor power amplifier, the control current generates magnetic force in the magnetic suspension bearing, so that the rotor shaft is driven to correct the position, therefore, the rotor shaft can quickly return to a reference position, and the motor starts to operate after the rotor shaft finally reaches the required position in the axial direction and the radial direction.
When this dust catcher motor stall, the rotor still can keep rotatory certain time because rotatory inertia after the outage, if the magnetic suspension bearing outage this moment, the rotor loses balance, can lead to the motor to damage, so, the motor need set up one can be after the complete stall of rotor, the last coil's of disconnection magnetic suspension bearing power supply, preferred embodiment, the dust catcher motor sets up a charging source in order to supply power for the coil of magnetic suspension bearing, avoids the motor outage back rotor to lose balance to damage the motor, this charging source lasts to charge when the motor starts.
When the dust collector motor is used, the electromagnetic parameters can be adjusted through the controller, so that the rotor has enough magnetic tension in the axial direction and the radial direction, the position of the rotor cannot be changed due to the change of load, and the normal operation of the motor is ensured.
According to the fact that the dust storage amount in the dust collector is different, the load of the motor can be changed, when the dust in the dust collector is more and more, the load of the motor is larger and larger, the rotating speed of the motor is reduced, the vacuum degree of the dust collector is reduced, and the suction force is reduced gradually.
Preferably, in this embodiment, both the radial magnetic bearing and the axial magnetic bearing are made of metal materials, and preferably, high-performance metal materials can be used to reduce the volume of the bearing, reduce noise and improve the efficiency of the motor; meanwhile, the air duct is designed as a cooling air duct, and the bearing is cooled when the impeller 12 rotates, so that the service life of the bearing is prolonged.
Preferably, in the present embodiment, the radial position sensor is fixed to a dedicated fixing plate, and a high-precision positioning structure is provided on the fixing plate, so that the radial position sensor detects a small positional deviation of the rotor with high precision.
The motor of the dust collector is used as a brand-new brushless dust collector motor structure and is applied to the dust collector, so that the dust collector has the advantages of high rotating speed, large suction force, low noise and long service life.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (11)
1. A dust collector motor comprises a stator (6) and a rotor (7) rotatably arranged in the stator (6), and is characterized in that the dust collector motor is provided with a magnetic suspension bearing for suspending the rotor (7) in the stator (6), the rotor (7) of the dust collector motor is not contacted with any object when in operation, the rotor comprises a rotor permanent magnet and a rotor shaft (11) arranged along the axial direction of the rotor permanent magnet, the magnetic suspension bearing comprises at least one pair of radial magnetic bearings for radially adjusting the position of the rotor shaft (11) and at least one pair of axial magnetic bearings for axially adjusting the position of the rotor shaft (11), and the dust collector motor is provided with a power supply for independently controlling the magnetic suspension bearing so as to supply power to a coil of the magnetic suspension bearing and continuously supply power after the power of the motor is cut off;
the axial magnetic bearing is provided with a groove;
an impeller (12) is installed at one end of the rotor shaft (11), a motor control panel (1) is arranged at the other end of the rotor shaft (11), a controller is further arranged on the motor control panel (1) to control a dust collector motor, and the rotating speed of the rotor shaft (11) is higher as the load of the dust collector is larger; and when the impeller (12) rotates, the bearing and the motor control panel (1) are cooled through the cooling air duct.
2. The vacuum cleaner motor according to claim 1, wherein each pair of the radial magnetic bearings is arranged symmetrically centered on the rotor permanent magnet, respectively.
3. The vacuum cleaner motor according to claim 1, wherein each pair of the axial magnetic bearings is arranged centrally symmetrically with respect to the rotor permanent magnet.
4. The vacuum cleaner motor according to claim 1, wherein the radial magnetic bearing is disposed closer to the rotor permanent magnets than the axial magnetic bearing.
5. The vacuum cleaner motor according to claim 1, 2, 3 or 4, further comprising at least one pair of radial position sensors for monitoring the position of the rotor shaft (11) in the radial direction, wherein one pair of the radial position sensors is disposed in one-to-one correspondence with one pair of the radial magnetic bearings, and the radial position sensors are connected to a motor control board (1).
6. The motor according to claim 5, wherein each pair of the radial position sensors is disposed between the corresponding pair of the radial magnetic bearings and is respectively located on both sides of the rotor permanent magnet.
7. The cleaner motor according to claim 5, wherein each pair of the radial magnetic bearings comprises an upper radial magnetic bearing (4) and a lower radial magnetic bearing (9) arranged on either side of the rotor permanent magnets, each pair of the radial position sensors comprising an upper radial position sensor (5) and a lower radial position sensor (8), the upper radial position sensor (5) corresponding to the upper radial magnetic bearing (4) and the lower radial position sensor (8) corresponding to the lower radial magnetic bearing (9).
8. The vacuum cleaner motor according to claim 1, 2, 3 or 4, further comprising an axial position sensor (2) for monitoring the position of the rotor shaft (11) in the axial direction, the axial position sensor (2) being connected to a motor control board (1).
9. The vacuum cleaner motor according to claim 8, wherein the axial position sensor (2) is arranged at the other end of the rotor shaft (11) remote from the mounting of the impeller (12).
10. The cleaner motor according to claim 9, wherein each pair of the axial magnetic bearings comprises an upper axial magnetic bearing (3) and a lower axial magnetic bearing (10) arranged on either side of the rotor permanent magnet, the axial position sensor (2) being arranged close to one of the upper axial magnetic bearing (3) and the lower axial magnetic bearing (10).
11. A vacuum cleaner having the vacuum cleaner motor according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710734233.8A CN107370322B (en) | 2017-08-24 | 2017-08-24 | Dust collector motor and dust collector |
| PCT/CN2018/091615 WO2019037523A1 (en) | 2017-08-24 | 2018-06-15 | Vacuum cleaner motor and vacuum cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710734233.8A CN107370322B (en) | 2017-08-24 | 2017-08-24 | Dust collector motor and dust collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107370322A CN107370322A (en) | 2017-11-21 |
| CN107370322B true CN107370322B (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710734233.8A Active CN107370322B (en) | 2017-08-24 | 2017-08-24 | Dust collector motor and dust collector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107370322B (en) |
| WO (1) | WO2019037523A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370322B (en) * | 2017-08-24 | 2021-12-07 | 莱克电气股份有限公司 | Dust collector motor and dust collector |
| CN110165824A (en) * | 2019-05-21 | 2019-08-23 | 深圳麦格动力技术有限公司 | Magnetic suspension motor |
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| CN1666026A (en) * | 2003-07-04 | 2005-09-07 | 三菱电机株式会社 | Magnetic bearing device |
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| CN103701336A (en) * | 2014-01-08 | 2014-04-02 | 北京航空航天大学 | Switching power supply device used in magnetic levitation permanent magnet motor control system |
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| JPH07255648A (en) * | 1994-03-23 | 1995-10-09 | Hitachi Ltd | Vacuum cleaner |
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| WO2008018169A1 (en) * | 2006-08-11 | 2008-02-14 | Ntn Corporation | Motor-integrated magnetic bearing device |
| CN106849482B (en) * | 2017-03-02 | 2019-04-05 | 南京航空航天大学 | Magnetic suspension motor and its working method without thrust disc |
| CN207354031U (en) * | 2017-08-24 | 2018-05-11 | 莱克电气股份有限公司 | A kind of motor of dust collector and dust catcher |
| CN207475377U (en) * | 2017-08-24 | 2018-06-08 | 莱克电气股份有限公司 | A kind of motor of dust collector and dust catcher |
| CN207354032U (en) * | 2017-08-24 | 2018-05-11 | 莱克电气股份有限公司 | A kind of motor of dust collector and dust catcher |
| CN107370321B (en) * | 2017-08-24 | 2019-10-18 | 莱克电气股份有限公司 | A kind of motor of dust collector and dust catcher |
| CN107370322B (en) * | 2017-08-24 | 2021-12-07 | 莱克电气股份有限公司 | Dust collector motor and dust collector |
| CN107516990B (en) * | 2017-08-24 | 2021-09-14 | 莱克电气股份有限公司 | Dust collector motor and dust collector |
-
2017
- 2017-08-24 CN CN201710734233.8A patent/CN107370322B/en active Active
-
2018
- 2018-06-15 WO PCT/CN2018/091615 patent/WO2019037523A1/en active Application Filing
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| CN1666026A (en) * | 2003-07-04 | 2005-09-07 | 三菱电机株式会社 | Magnetic bearing device |
| CN101558268A (en) * | 2006-10-06 | 2009-10-14 | 阿拂迈克奎公司 | High capacity chiller compressor |
| CN101243957A (en) * | 2007-02-07 | 2008-08-20 | 杨泰和 | Low-noise energy-saving dust aspirator with loaded regulate and control electrical energy |
| CN201714584U (en) * | 2010-07-07 | 2011-01-19 | 山东科技大学 | Novel magnetic suspending wind power generator |
| CN103701336A (en) * | 2014-01-08 | 2014-04-02 | 北京航空航天大学 | Switching power supply device used in magnetic levitation permanent magnet motor control system |
| CN106505780A (en) * | 2016-12-15 | 2017-03-15 | 南通金驰机电有限公司 | A kind of magnetic suspension permanent magnet direct-drive high-speed motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019037523A1 (en) | 2019-02-28 |
| CN107370322A (en) | 2017-11-21 |
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