CN112366851A - Motor for range hood - Google Patents
Motor for range hood Download PDFInfo
- Publication number
- CN112366851A CN112366851A CN202011225196.6A CN202011225196A CN112366851A CN 112366851 A CN112366851 A CN 112366851A CN 202011225196 A CN202011225196 A CN 202011225196A CN 112366851 A CN112366851 A CN 112366851A
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- China
- Prior art keywords
- motor
- magnetic
- stator
- magnetic conducting
- range hood
- 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.)
- Granted
Links
- 230000017525 heat dissipation Effects 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 claims description 5
- 239000003517 fume Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 9
- 235000017491 Bambusa tulda Nutrition 0.000 description 9
- 241001330002 Bambuseae Species 0.000 description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 9
- 239000011425 bamboo Substances 0.000 description 9
- 230000003313 weakening effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
-
- 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
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a motor for a range hood, aiming at solving the defects that the existing structure capable of adjusting the motor constant of the motor is too bulky and occupies too much space. The motor comprises a stator and a rotor which is rotatably supported in the stator, wherein a magnetic conduction assembly is sleeved outside the stator and can change the motor constant of the motor in a deformation mode. The structure has the advantages that the motor constant is changed on the premise that the structure does not occupy the axial direction additionally, high rotating speed and high torque are considered at different working stages, and the heat dissipation capacity of the motor is improved due to the arrangement of the heat dissipation fins.
Description
Technical Field
The invention relates to the field of motors, in particular to a motor for a range hood.
Background
The motor constant, also referred to as a voltage constant or a torque constant, mainly characterizes the electromechanical properties of the motor. In general, the motor constant is a fixed quantity associated with the machine, which quantity can only be changed in so-called field weakening operation. However, only the motor constant can be reduced in the field weakening operation. Depending on the magnitude of the motor constant, the motor can produce a higher maximum rotational speed or a greater maximum torque. The torque of the electric machine is essentially dependent on the operating point at which it is set, i.e. the torque is a function of the rotational speed. In the motor, the relationship between the rotation speed and the torque is described by a so-called motor constant (torque constant), and is generally a straight line having a slope. A larger motor constant results in a higher maximum torque at the same time as a lower maximum rotational speed. Vice versa, for an electric machine, a higher torque and a higher rotational speed are difficult to achieve. In many operating environments, achieving multiple motor constants is helpful to work.
For the range hood, the motor-driven fan of the range hood is easy to accumulate oil dirt, so that a very large force is needed during starting, a common use environment is a household, and the three-phase motor is difficult to drive in a star-shaped and triangular conversion mode, so that the torque is improved, and a larger rotation speed is realized subsequently.
Chinese patent publication No. CN201680031317.9, entitled CN107710568B, discloses an electric motor (2), the electric motor (2) having a stator (3) and a rotor (4) rotatably supported in the stator (3), wherein a screw (12) is guided by the electric motor (2) and at least one magnetically conductive assembly (8) is provided which can be introduced into the electric motor (2), wherein the magnetically conductive assembly (8) is linearly movably arranged on the screw (12) in order to change a motor constant of the electric motor (2) by moving the magnetically conductive assembly (8) into the electric motor (2). The unable direct mount output shaft in the middle part of the active cell that the device at least one kind of embodiment needs the middle part sets up comparatively inconveniently, has taken a large amount of axial space through the mode of sleeve linear movement, is unfavorable for the miniaturization of motor.
Disclosure of Invention
The invention overcomes the defects that the existing structure capable of adjusting the motor constant of the motor is too fat and occupies more space, and provides the motor for the range hood, which can change the motor constant on the premise of occupying less space, thereby realizing high torque and high rotating speed in different working stages.
In order to solve the technical problems, the invention adopts the following technical scheme:
a motor for the fume exhauster is composed of a stator, a rotor, a magnetic conducting module, and a motor.
The deformation of magnetic conduction subassembly can change the magnetic leakage flux to change the motor constant, compromise high moment of torsion and high rotational speed.
As preferred, the magnetic conduction subassembly includes around the stator and with the coaxial magnetic conduction section of thick bamboo of stator, and a magnetic conduction section of thick bamboo includes a plurality of support pieces that set up along motor axial direction, support the piece and center on the annular face at magnetic conduction section of thick bamboo place arranges, support articulated being connected with magnetic conduction piece on the piece, magnetic conduction piece can rotate to the annular face at magnetic conduction section of thick bamboo place to change the magnetic leakage flux of motor. The magnetic conduction cylinder is arranged at the periphery of the stator, the supporting sheet and the magnetic conduction sheet are both sheet bodies with arc-shaped cross sections, and the supporting sheet and the magnetic conduction sheet are connected end to form a cylinder shape. When the two are enclosed into a cylinder shape, the motor constant is larger. Otherwise, it is minimal. For the situation, the rotating amplitude of the magnetic conductive sheet can be corresponding to the motor constant, and the highest efficiency can be realized under different working requirements.
Preferably, one end of the magnetic conduction assembly, which is far away from the output end of the motor, is provided with a synchronizing part, and the magnetic conduction sheet moves synchronously through the synchronizing part. All the magnetic conducting sheets and the supporting sheets are arranged at equal intervals. A synchronous part is required to be arranged for uniformly adjusting the rotation of the magnetic conductive sheets, so that the rotation angles of the magnetic conductive sheets are the same.
Preferably, one end of the magnetic conductive sheet is hinged to the support sheet to form a hinged end, the other end of the magnetic conductive sheet is a free end, a rotating path of the free end relative to the hinged end is a rotating path, the synchronizing part comprises a synchronizing disc rotatably connected to one end of the motor, which is far away from the output shaft of the motor, a rotating curved hole corresponding to the projection of the rotating path, and a synchronizing rod connected to the free end of the magnetic conductive sheet, the synchronizing rod is inserted into the rotating curved hole, and the synchronizing disc is connected with the switching structure. The synchronous piece realizes the rotation of the magnetic conductive sheet. One side of the free end close to the synchronous disc is connected with or integrally formed with a synchronous rod which is inserted in the rotating curved hole. Along with the rotation of the synchronous disc, the magnetic conduction sheet rotates correspondingly. Since the rotation locus thereof corresponds to the rotation curved hole. The rotation of the rotating disk can synchronously control the rotation angle of each magnetic conduction sheet. When the rotating disc rotates to the limit, the completely closed state and the completely opened state of the magnetic conductive sheet are respectively corresponded.
Preferably, the switching structure comprises a stepping motor and a controller, wherein the stepping motor is connected with the synchronous disc through a shaft, and the controller is electrically connected with the stepping motor. The power for driving the magnetic conductive sheet comes from the stepping motor, the rotation angle of the stepping motor is accurately controlled, and the motor constant required by the motor can be accurately achieved. The controller is connected with an external control button or a sensor, and the shape of the magnetic conduction cylinder is changed step by setting certain parameters through calculation.
Preferably, the length of the magnetic conduction cylinder is greater than or equal to the length of the motor. This structure facilitates the realization of the maximum motor constant.
Preferably, the magnetic conduction sheet is a grounding sheet.
Preferably, the arc length of the magnetically permeable plate is longer than the length of the support plate. By setting the arc length of the supporting piece as short as possible, the difference between the motor constants in the on and off states is amplified more.
Preferably, one surface of the magnetic conductive sheet, which is far away from the stator, is provided with a plurality of radiating fins. The magnetic conduction component can realize the function of heat dissipation through the heat dissipation fins.
Compared with the prior art, the invention has the beneficial effects that: (1) on the premise of not additionally occupying the axial direction, the motor constant is changed, and high rotating speed and high torque are considered at different working stages; (2) the arrangement of the heat dissipation fins improves the heat dissipation capability of the motor.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the magnetic conducting cylinder of the present invention closed;
FIG. 3 is a schematic view of the magnetic conduction cylinder of the present invention opened;
FIG. 4 is a schematic view of a synchronization disc of the present invention;
in the figure: stator 1, rotor 2, magnetic conduction subassembly 3, magnetic conduction section of thick bamboo 4, support piece 5, magnetic conduction piece 6, synchronizing part 7, hinged end 8, free end 9, synchronizing disk 10, rotation curved hole 11, synchronizing bar 12, switching structure 13, step motor 14, heat radiation fin 15.
Detailed Description
The solution according to the invention will be described in further detail below with reference to a specific example and with reference to the attached drawings, but the invention can be implemented in many different ways, as defined and covered by the claims.
Example (b):
a motor for a range hood is disclosed, as shown in figure 1, the motor is provided with a stator 1 and a rotor 2 which can be rotatably supported in the stator 1, a magnetic conduction component 3 is sleeved outside the stator 1, and the magnetic conduction component 3 can change the motor constant of the motor through deformation. The coils are arranged radially on the stator 1. The permanent magnets are arranged radially on the rotor 2.
As shown in fig. 2 and 3, the deformation of the magnetic conduction component 3 can change the leakage magnetic flux, thereby changing the motor constant and taking high torque and high rotation speed into account. Magnetic conduction subassembly 3 includes around stator 1 and with the coaxial magnetic conduction section of thick bamboo 4 of stator 1, and magnetic conduction section of thick bamboo 4 includes a plurality of very narrow support pieces 5 that set up along motor axial direction, support piece 5 centers on 4 place annular faces of magnetic conduction section of thick bamboo are arranged, support articulated being connected with magnetic conduction piece 6 on the piece 5, magnetic conduction piece 6 can rotate to the annular face of magnetic conduction section of thick bamboo place to change the magnetic leakage flux of motor. The magnetic conduction cylinder 4 is arranged at the periphery of the stator 1, the supporting sheet 5 and the magnetic conduction sheet 6 are both sheet bodies with arc-shaped cross sections, and the supporting sheet 5 and the magnetic conduction sheet 6 are connected end to form a cylinder shape. When the two are enclosed into a cylinder shape, the motor constant is larger. Otherwise, it is minimal. For the situation, the rotating amplitude of the magnetic conductive sheet 6 can be corresponding to the motor constant, and the highest efficiency can be realized under different working requirements. One end of the magnetic conduction component 3, which is far away from the output end of the motor, is provided with a synchronizing part 7, and the magnetic conduction sheet 6 moves synchronously through the synchronizing part 7. The magnetic conductive sheets 6 and the supporting sheets 5 are arranged at equal intervals. A synchronizing part 7 is required to be arranged for uniformly adjusting the rotation of the magnetic conducting pieces 6, so that the rotation angles of the magnetic conducting pieces 6 are the same. The length of the magnetic conduction cylinder 4 is greater than or equal to that of the motor. This structure facilitates the realization of the maximum motor constant. The magnetic conduction sheet 6 is a grounding sheet. The arc length of the magnetic conductive plate 6 is longer than that of the supporting plate 5. By setting the arc length of the supporting piece 5 as short as possible, the difference in the motor constants in the on and off states is amplified more. One surface of the magnetic conductive sheet 6, which is far away from the stator 1, is provided with a plurality of radiating fins 15. The magnetic conduction component 3 can realize the function of heat dissipation through the heat dissipation fins 15.
As shown in fig. 4, one end of the magnetic conductive plate 6 is hinged to the supporting plate 5 to form a hinged end 8, the other end of the magnetic conductive plate 6 is a free end 9, a path of the free end 9 rotating relative to the hinged end 8 is a rotation path, the synchronizer 7 includes a synchronization disc 10 rotatably connected to one end of the motor far away from the output shaft of the motor, a rotation curved hole 11 corresponding to a projection of the rotation path, and a synchronization rod 12 connected to the free end 9 of the magnetic conductive plate 6, the synchronization rod 12 is inserted into the rotation curved hole 11, and the synchronization disc 10 is connected to a switching structure 13. The synchronous piece 7 realizes the rotation of the magnetic conductive sheet 6. One side of the free end 9 close to the synchronous disk 10 is connected with or integrally formed with a synchronous rod 12, and the synchronous rod 12 is inserted in the rotating curved hole 11. With the rotation of the synchronous disc 10, the magnetic conductive plate 6 performs a corresponding rotation. Since its turning locus corresponds to the turning curved hole 11. The rotation of the rotating disk can synchronously control the rotation angle of each magnetic conductive sheet 6. When the rotating disc rotates to the limit, the completely closed state and the completely opened state of the magnetic conductive sheet 6 are respectively corresponded. In order to better position the supporting sheet and the magnetic conducting sheet, the shape of the free end corresponds to that of one end of the supporting sheet abutting against the free end, the free end is provided with an abutting flange, the supporting sheet is provided with an arc-shaped groove corresponding to the abutting flange, and the structure can improve the smooth degree of separation and attachment of the supporting sheet and the magnetic conducting sheet.
The switching mechanism 13 comprises a stepping motor 14 connected with the synchronization disc 10 by a shaft and a controller, and the controller is electrically connected with the stepping motor 14. The power for driving the magnetic conductive sheet 6 comes from the stepping motor 14, and the rotation angle of the stepping motor 14 is accurately controlled, so that the required motor constant can be accurately achieved. The controller is connected with an external control button or a sensor, and the shape of the magnetic conduction cylinder 4 is changed step by setting certain parameters through calculation. Besides the stepping motor 14 is used to control the rotation of the synchronous disk 10 by signals, other connection methods are available. For example, the pneumatic push rods are symmetrically arranged at the eccentric position of the synchronization disc 10, and one end of the pneumatic push rod is fixedly connected to a fixed positioning device of a motor of the range hood. Similar ways are many and will not be described herein.
In order to position each supporting plate 5, a circular ring having the same diameter as the magnetic conductive cylinder 4 is provided at both ends of each supporting plate 5 to connect the supporting plates 5. The circular ring is connected to the connecting part to position the magnetic conducting cylinder 4. Since the connection position can be adjusted in a large amount, it is not described in detail.
Ideally, when the synchronous disk 10 rotates until the magnetic conductive plate 6 is opened until the straight line connecting the free end 9 and the hinged end 8 coincides with the radial direction of the magnetic conductive cylinder 4, the motor constant is maximum. For this purpose, the free end 9 of the position is set to project to a point corresponding to the synchronization disc 10 as a starting point. And the completely closed cylindrical position is the end point. In short, when the magnetically permeable member 3 is completely closed to form a closed cylindrical shape, a large maximum torque can be achieved at a low maximum rotation speed.
If the magnetic conducting assembly 3 is fully open, the motor constant is smaller, where a smaller maximum torque at a larger maximum rotational speed is desired.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (9)
1. A motor for fume exhauster is composed of stator, rotor supported by said stator, and magnetic conducting module sleeved outside said stator and able to deform to change the motor constant of motor.
2. The motor of claim 1, wherein the magnetic conducting assembly comprises a magnetic conducting cylinder surrounding the stator and coaxial with the stator, the magnetic conducting cylinder comprises a plurality of supporting pieces arranged along an axial direction of the motor, the supporting pieces are arranged around an annular surface where the magnetic conducting cylinder is located, the supporting pieces are hinged to the magnetic conducting pieces, and the magnetic conducting pieces can rotate to the annular surface where the magnetic conducting cylinder is located to change magnetic leakage flux of the motor.
3. The motor for a range hood according to claim 1, wherein a synchronizing member is disposed at an end of the magnetic conducting assembly away from the output end of the motor, and the magnetic conducting plate moves synchronously via the synchronizing member.
4. The motor for kitchen ventilator according to claim 3, wherein one end of said magnetic conductive plate is hinged to the supporting plate to form a hinged end, the other end of said magnetic conductive plate is a free end, the path of the free end rotating relative to the hinged end is a rotating path, the synchronizing member comprises a synchronizing disk rotatably connected to one end of the motor far from the output shaft of the motor, a rotating curved hole corresponding to the projection of the rotating path, and a synchronizing rod connected to the free end of the magnetic conductive plate, the synchronizing rod is inserted into the rotating curved hole, and the synchronizing disk is connected to the switching structure.
5. The motor for a range hood as claimed in claim 4, wherein the switching structure comprises a stepping motor connected with the synchronization disc through a shaft and a controller, and the controller is electrically connected with the stepping motor.
6. The motor for the range hood according to claim 2, wherein the length of the magnetic conduction cylinder is greater than or equal to the length of the motor.
7. The motor for a range hood according to claim 2, wherein the magnetic conducting plate is a grounding plate.
8. The motor for a range hood of claim 7, wherein the arc length of the magnetic conducting plate is longer than the length of the supporting plate.
9. The motor for a range hood according to any one of claims 1 to 8, wherein a plurality of heat dissipation fins are disposed on a surface of the magnetic conductive plate facing away from the stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011225196.6A CN112366851B (en) | 2020-11-05 | 2020-11-05 | Motor for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011225196.6A CN112366851B (en) | 2020-11-05 | 2020-11-05 | Motor for range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112366851A true CN112366851A (en) | 2021-02-12 |
| CN112366851B CN112366851B (en) | 2022-01-11 |
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ID=74510103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011225196.6A Active CN112366851B (en) | 2020-11-05 | 2020-11-05 | Motor for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112366851B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005261045A (en) * | 2004-03-10 | 2005-09-22 | Mitsubishi Electric Corp | Electric machine |
| CN103001340A (en) * | 2012-11-13 | 2013-03-27 | 西安巨舟电子设备有限公司 | Floatable magnetic feed stator and permanent magnet speed reducing device based on same |
| CN103066786A (en) * | 2012-12-27 | 2013-04-24 | 周智庆 | Novel stator permanent magnet type motor and stator structure thereof |
| US20140125154A1 (en) * | 2009-12-22 | 2014-05-08 | Kress Motors, LLC | Poly gap transverse flux machine |
| JP5688684B2 (en) * | 2011-08-25 | 2015-03-25 | 株式会社デンソー | Rotating electric machine |
| CN104659996A (en) * | 2014-11-14 | 2015-05-27 | 江西理工大学 | Magnetic leakage type mechanical variable flux permanent magnet synchronous motor |
| CN106992649A (en) * | 2017-05-27 | 2017-07-28 | 江西理工大学 | Become magnetic flow permanent magnet energy conversion |
| CN109004806A (en) * | 2018-07-26 | 2018-12-14 | 河北工业大学 | A kind of machinery magnetism-regulating type permanent magnet synchronous electric thermomechanical components |
| JP2019009924A (en) * | 2017-06-26 | 2019-01-17 | 多摩川精機株式会社 | Magnet position variable motor, magnet position variable rotor, motor characteristic change method, and motor manufacturing method |
| CN209057083U (en) * | 2018-12-20 | 2019-07-02 | 哈尔滨理工大学 | A kind of novel brushless dual-feed motor |
| CN109995210A (en) * | 2019-04-18 | 2019-07-09 | 苏州阿福机器人有限公司 | A kind of motor change magnetic flux method |
-
2020
- 2020-11-05 CN CN202011225196.6A patent/CN112366851B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005261045A (en) * | 2004-03-10 | 2005-09-22 | Mitsubishi Electric Corp | Electric machine |
| US20140125154A1 (en) * | 2009-12-22 | 2014-05-08 | Kress Motors, LLC | Poly gap transverse flux machine |
| JP5688684B2 (en) * | 2011-08-25 | 2015-03-25 | 株式会社デンソー | Rotating electric machine |
| CN103001340A (en) * | 2012-11-13 | 2013-03-27 | 西安巨舟电子设备有限公司 | Floatable magnetic feed stator and permanent magnet speed reducing device based on same |
| CN103066786A (en) * | 2012-12-27 | 2013-04-24 | 周智庆 | Novel stator permanent magnet type motor and stator structure thereof |
| CN104659996A (en) * | 2014-11-14 | 2015-05-27 | 江西理工大学 | Magnetic leakage type mechanical variable flux permanent magnet synchronous motor |
| CN106992649A (en) * | 2017-05-27 | 2017-07-28 | 江西理工大学 | Become magnetic flow permanent magnet energy conversion |
| JP2019009924A (en) * | 2017-06-26 | 2019-01-17 | 多摩川精機株式会社 | Magnet position variable motor, magnet position variable rotor, motor characteristic change method, and motor manufacturing method |
| CN109004806A (en) * | 2018-07-26 | 2018-12-14 | 河北工业大学 | A kind of machinery magnetism-regulating type permanent magnet synchronous electric thermomechanical components |
| CN209057083U (en) * | 2018-12-20 | 2019-07-02 | 哈尔滨理工大学 | A kind of novel brushless dual-feed motor |
| CN109995210A (en) * | 2019-04-18 | 2019-07-09 | 苏州阿福机器人有限公司 | A kind of motor change magnetic flux method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112366851B (en) | 2022-01-11 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A motor for range hoods Granted publication date: 20220111 Pledgee: Shengzhou Sub-branch of Postal Savings Bank of China Co.,Ltd. Pledgor: SHENGZHOU SHUANGGANG ELECTRICAL APPLIANCE CO.,LTD. Registration number: Y2024330000417 |
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