CN209593238U - A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan - Google Patents
A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan Download PDFInfo
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- CN209593238U CN209593238U CN201920663453.0U CN201920663453U CN209593238U CN 209593238 U CN209593238 U CN 209593238U CN 201920663453 U CN201920663453 U CN 201920663453U CN 209593238 U CN209593238 U CN 209593238U
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- ceiling fan
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Abstract
This application discloses a kind of 14 pole, the 12 slot low noise variable-frequency motors of ceiling fan, the application by the lateral surface of each crown be recessed inwardly two auxiliary tanks being symmetrically formed for reducing stator detent torque, it multiple auxiliary tanks and multiple septum interalveolares and is uniformly distributed and angle that two adjacent auxiliary tanks and/or tooth space centerline are formed is 10 degree, so that the harmonic wave that auxiliary tank generates is opposite with the harmonic phase that stator generates, the harmonic wave that auxiliary tank generates can offset the P subharmonic for the harmful harmonic component that original stator generates, to reduce cogging torque, it avoids vibrating, realize the low noise operating of motor, and, the ceiling-fan motor of the application is 14 pole, 12 slot, so that rotor rim is unsaturated, it can guarantee the steady running of performance motor under same performance using the permanent magnet of 5mm thickness, manufacture magnet can be saved Material, the application is provided with a plurality of reinforcing rib, and a plurality of reinforcing rib is circumferentially arranged along the center of the drive end bearing bracket, can reinforce the structural strength of motor entirety.
Description
Technical field
The utility model belongs to 14 pole, the 12 slot low noise frequency conversion of ceiling fan manufacturing technology field more particularly to a kind of ceiling fan
Motor.
Background technique
Cogging torque is the intrinsic phenomenon of magneto, it is to be produced in the state of armature winding no power by permanent magnet
Raw magnetic field acts on the torque of circumferencial direction generation with the tooth socket of armature core, its generation is from permanent magnet and armature iron
The tooth socket of the heart acts on the torque of circumferencial direction generation, and tangential force of her generation between permanent magnet and armature tooth makes
The rotor of magneto has the tendency that a kind of being aligned along a certain specific direction with stator, it is intended to by rotor fixed position in certain positions
It sets, therefore a kind of oscillating torque that trend generates, cogging torque can be such that motor torque fluctuates, generates vibration and noise, turn
Speed fluctuation, prevents motor from smooth motion, influences the performance of motor, while motor being made to generate undesirable vibration and noise, In
In variable speed drives, when torque pulsation frequency is consistent with the mechanical resonance frequency of stator or rotor, the vibration of cogging torque generation
It will be amplified with noise, the presence of cogging torque equally affects low-speed performance and position control of the motor in speed control system
High accuracy positioning in system processed.
Utility model content
(1) purpose of utility model
In order to overcome the above deficiency, the purpose of this utility model is to provide a kind of 14 pole, the 12 slot low noises of ceiling fan
Variable-frequency motor, moment unbalance excessive with the motor cogging torque for solving existing ceiling fan cause motor frequent vibration to generate big
Measure that noise, the structural strength of motor be not high, the technical problem that when high-speed rotation is easily damaged and motor consumptive material is more.
(2) technical solution
To achieve the above object, technical solution provided by the present application is as follows:
A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan comprising:
Rear end cap, rear end cap are recessed inwardly to form the accommodating cavity with an opening；
Drive end bearing bracket, lid are set the opening in accommodating cavity and are connect with rear end cap；
Runner assembly is sheathed in drive end bearing bracket and rear end cap, and the both ends of runner assembly turn with rear end cap and drive end bearing bracket respectively
Dynamic connection；
Stator is arranged in accommodating cavity, and stator includes iron core and multiple windings for being wound around on iron core, and iron core includes fixed
Sub- yoke portion and around stator yoke and the shape between 12 to extend radially outwardly the rack gear of stator yoke, two neighboring rack gear
At a tooth socket, the one end of each rack gear far from stator yoke circumferentially forms a crown, wherein the lateral surface of each crown
Be recessed inwardly two auxiliary tanks being symmetrically formed for reducing stator detent torque, each auxiliary tank and adjacent auxiliary tank and tooth
The interval of slot is equal, and the angle of two adjacent auxiliary tanks and/or tooth space centerline formation is 10 degree；
Rotor is arranged in accommodating cavity and connect with runner assembly, and rotor is disposed around on the outside of stator, and rotor includes: with after
The rotor yoke of the inner sidewall connection of end cap and the permanent magnet being arranged on rotor yoke, the number of poles of permanent magnet are 14 poles, are turned
Son rotates that runner assembly is driven to rotate under the magnetic fields of stator.
Further, auxiliary tank is arc groove.
Further, the width of auxiliary tank substantially 3mm.
Further, the medial surface substantially 1mm of the distance from bottom crown of auxiliary tank.
Further, the thickness of permanent magnet substantially 5mm.
Further, the thickness of rear end cap substantially 2mm.
Further, the side on drive end bearing bracket far from rear end cap is provided with a plurality of reinforcing rib, and a plurality of reinforcing rib is along drive end bearing bracket
Center circumferentially be arranged, for reinforcing the structural strength of drive end bearing bracket.
Further, reinforcing rib is 8.
By above technical solution, the beneficial effects of the present application are as follows: 14 pole, the 12 slot low noise variable-frequency electric of ceiling fan
Machine by the lateral surface of each crown be recessed inwardly two auxiliary tanks being symmetrically formed for reducing the stator detent torque,
It multiple auxiliary tanks and multiple septum interalveolares and is uniformly distributed and angle that two adjacent auxiliary tanks and/or tooth space centerline are formed
It is 10 degree, so that the harmonic phase that harmonic wave and stator that auxiliary tank generates generate is on the contrary, the harmonic wave that auxiliary tank generates can offset original
The P subharmonic for the harmful harmonic component that the stator come generates avoids vibrating, realizes motor to reduce cogging torque
Low noise operating, also, the ceiling-fan motor of the application is 14 pole, 12 slot, and rotor rim is unsaturated, and 5mm is used under same performance
The permanent magnet of thickness can guarantee the steady running of performance motor, can save the material of manufacture magnet, and cogging torque divides at 14 forever
On magnet, equalising torque effect is more preferable, and single permanent magnet stress is smaller, keeps rotor rotation more stable, and can realize it is collection
Middle winding, concentratred winding process costs reduce, and further, side of the application on drive end bearing bracket far from rear end cap is provided with more
Reinforcing rib, a plurality of reinforcing rib are circumferentially arranged along the center of the drive end bearing bracket, can reinforce the structural strength of motor entirety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 14 pole, the 12 slot low noise variable-frequency motor of the ceiling fan of the utility model；
Fig. 2 is the explosive view of 14 pole, the 12 slot low noise variable-frequency motor of the ceiling fan of the utility model；
Fig. 3 is the structural schematic diagram of the iron core of 14 pole, the 12 slot low noise variable-frequency motor of the ceiling fan of the utility model；
Fig. 4 is the enlarged drawing of part A in Fig. 3；
Fig. 5 is the schematic diagram for the cogging torque that existing variable-frequency motor is obtained by finite element analysis；
Fig. 6 is that 14 pole, the 12 slot low noise variable-frequency motor of the ceiling fan of the utility model is obtained by finite element analysis
The schematic diagram of cogging torque；
Fig. 7 a is the noise analysis figure of 14 pole, the 12 slot low noise variable-frequency motor of the utility model；
Fig. 7 b is the noise analysis figure of existing variable-frequency motor；
Appended drawing reference:
1: rear end cap；2: locking nut；3: permanent magnet fixed ring；4: permanent magnet；5: lower skeleton；6: iron core；601: auxiliary
Slot；7: bearing；8: winding coil；9: upper skeleton；10: central spindle；11: drive end bearing bracket；1101: reinforcing rib；12: screw.
Specific embodiment
To make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment
And referring to attached drawing, the utility model is further described.It should be understood that these descriptions are merely illustrative, and do not really want
Limit the scope of the utility model.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid not
Necessarily obscure the concept of the utility model.
A kind of 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan provided by the utility model comprising:
Rear end cap 1, rear end cap 1 are recessed inwardly to form the accommodating cavity with an opening；
Drive end bearing bracket 11, lid are set the opening in accommodating cavity and are connect with rear end cap 1；
Runner assembly is sheathed in drive end bearing bracket 11 and rear end cap 1, the both ends of runner assembly respectively with rear end cap 1 and front end
Lid 11 is rotatablely connected；
Stator is arranged in accommodating cavity, and stator includes iron core 6 and multiple winding coils 8 for being wound around on iron core 6, iron
Core 6 is two neighboring including stator yoke and around stator yoke and along 12 to extend radially outwardly the rack gear of stator yoke
A tooth socket is formed between rack gear, the one end of each rack gear far from stator yoke circumferentially forms a crown, wherein Mei Gechi
The lateral surface of hat is recessed inwardly two auxiliary tanks 601 being symmetrically formed for reducing stator detent torque, each auxiliary tank 601 and phase
The interval of adjacent auxiliary tank 601 and tooth socket is equal；
Rotor is arranged in accommodating cavity and connect with runner assembly, and rotor is disposed around on the outside of stator, and rotor includes: with after
The rotor yoke of the inner sidewall connection of end cap 1 and the permanent magnet 4 being arranged on rotor yoke, the number of poles of permanent magnet 4 are 14
Pole, rotor rotate that runner assembly is driven to rotate under the magnetic fields of stator.
It multiple auxiliary tanks 601 and multiple septum interalveolares and is uniformly distributed, in this application, two adjacent auxiliary tanks 601
And/or the angle that tooth space centerline is formed is 10 degree.
Specifically, please referring to Fig. 1 and Fig. 2, rotor includes permanent magnet fixed ring 3 and circumferential setting in permanent magnet fixed ring 3
On multiple permanent magnets 4；Stator includes winding coil 8 on iron core 6 of iron core 6, coiling and the two sides of iron core 6 are arranged in use
In the upper skeleton 9 and lower skeleton 5 of secured core 6；Runner assembly includes central spindle 10 and central spindle 10 is rotatably arranged on drive end bearing bracket
11 and rear end cap 1 on two bearings 7, drive end bearing bracket 11 and rear end cap 1 are fixed as one by screw 12 and locking nut 2.
Since, there are biggish magnetic slot torque, biggish magnetic slot torque causes fixed between the stator and rotor of existing motor
Speed is sometimes fast and sometimes slow during rotation for son, and cogging torque can be such that motor torque fluctuates, and generates vibration and noise, revolving speed wave occurs
It is dynamic, prevent motor from smooth motion, influences the performance of motor, meanwhile, cogging torque can also make motor generate undesirable vibration
And noise, in variable speed drives, when torque pulsation frequency is consistent with the mechanical resonance frequency of stator or rotor, cogging torque is produced
Raw vibration and noise will be amplified, and the presence of cogging torque equally affects low-speed performance of the motor in speed control system
With the high accuracy positioning in position control system.The application existing motor there are aiming at the problem that, opened in the lateral surface of stator
If auxiliary tank 601, the angle of two adjacent auxiliary tanks 601 and/or tooth space centerline formation is 10 degree, and auxiliary tank 601 is arranged
Afterwards, the magnetic slot torque of rotor can be reduced, and then reduces vibration and the noise of motor.
Concrete principle is as follows: auxiliary flute itself can generate harmonic wave, generate when the harmonic wave that auxiliary tank 601 generates with stator
When harmonic phase is opposite, the harmonic wave that auxiliary tank 601 generates can offset the harmful harmonic component that original stator generates P times is humorous
Wave avoids vibrating to reduce cogging torque, realizes the low noise operating of motor.
Fig. 5 and Fig. 6 are please referred to, Fig. 5 and Fig. 6 are that existing motor and the motor of the application pass through finite element on the market respectively
The schematic diagram of the magnetic slot torque for two motors that software emulation is obtained, the electromagnetic parameter phase of two ratings of machine and each material
Together, as can be seen from Figure 5, the cogging torque of existing motor is 9.796Nm, and the cogging torque of the motor of the application is 1.322Nm, this
The magnetic slot torque of the more existing motor of magnetic slot torque of application about reduces an order of magnitude, by the comparison of two figures it is found that originally
The cogging torque of the more existing motor of the cogging torque of the motor of application has and significantly reduces, to demonstrate the application setting
Vibration and the noise of motor can be sufficiently reduced after auxiliary tank 601.
Specifically, please referring to Fig. 7 a and Fig. 7 b, Fig. 7 a and Fig. 7 b abscissa is the time, ordinate is that location torque is noise
Decibel value, wherein Fig. 7 a is the motor by the uniform teeth portion material reducing of air gap of the application measured by noise testing equipment
Noise analysis figure, Fig. 7 b be by the noise analysis figure of existing motor measured by noise testing equipment, can from two map analysis
Know, the noise average of the motor of the application is 50 decibels, less than 55 decibels of the noise average of existing motor.
Further, the slot number of stator is arranged to 12 slots due to the application, the logarithm of permanent magnet 4 is arranged to 7 pairs, it is fixed
Pilot trench number is arranged to 12 slots, and the logarithm of permanent magnet is arranged to 7 pairs of slot number cooperation, so that the cogging torque of motor is symmetrical,
Cogging torque counterbalance effect is more preferable, and single permanent magnet stress is smaller, is further reduced the vibration of motor, can reduce noise.
Also, above-mentioned slot number, which cooperates, can be achieved concentratred winding, and when concentratred winding can pass through automation and carry out coiling, the cost of coiling
It is low.Also, the slot square of concentratred winding is smaller, on process costs of the concentratred winding relative to existing other windings such as Distributed Winding
It is advantageous.
Preferably, the auxiliary tank 601 of the application may be configured as various shapes, for the mechanical strength for improving stator, will assist
Slot 601 is arc groove.
Through obtained by test of many times, the harmonic wave and opposite in phase generated for the harmonic wave that generates auxiliary tank 601 close to stator,
The application is by the width d1 substantially 3mm of the width of auxiliary tank 601 substantially auxiliary tank 601, and by the bottom of auxiliary tank 601
Portion is placed at the distance d2 substantially 1mm of the medial surface of crown, as shown in Figure 4.In this way, in the structure for guaranteeing stator teeth
The P for the harmful harmonic component that the original stator of the harmonic cancellation for generating to greatest extent auxiliary tank 601 while intensity generates
Subharmonic avoids vibrating to reduce cogging torque, realizes the low noise operating of motor
The motor of existing 12 slot of such as 8 pole of other motors on the market and 10 pole, 12 slot is easy to satisfy due to rotor rim
With in order to guarantee that the performance of motor need to thicken permanent magnet, for example, the permanent magnet 4 of the motor of existing 10 pole, 12 slot is arranged to
The permanent magnet 4 of the thickness of 8.5mm, 8 pole, 12 slot is arranged to 8mm, and permanent magnet 4 on the market is typically provided to 8-10mm, to protect
Card meets the performance of motor.The motor of the application uses 14 pole, 12 slot, in same outer diameter and same casing thickness, 14 poles
The motor flux density of 12 slots is lower, and rotor rim is not easy to be saturated, and therefore, the application is not necessarily to thicken the i.e. certifiable motor of permanent magnet
Performance, therefore, the permanent magnet 4 of the application can be done thinner compared to the permanent magnet 4 of existing motor, can be saved so a large amount of
4 material of permanent magnet.Preferably, 4 thickness of permanent magnet of the application is arranged to 5mm, and the permanent magnet 4 of 5mm thickness can guarantee performance
The performance of motor, while the material of manufacture permanent magnet 4 can be saved.Preferably, the application is by the thickness of rear end cap 1 substantially 2mm.
When producing the motor of the application in enormous quantities, the thickness of the thickness and rear end cap 1 that reduce permanent magnet 4 can save a large amount of material,
Reduce the cost of raw manufacturer.
Preferably, Fig. 1 and Fig. 2 are please referred to, in the application, the side on drive end bearing bracket 11 far from rear end cap 1 is provided with a plurality of
Reinforcing rib 1101, a plurality of reinforcing rib 1101 is circumferentially arranged along the center of drive end bearing bracket 11, after reinforcing rib 1101 is set, reinforcing rib 1101
It can reinforce the structural strength of drive end bearing bracket 11, so that motor, when high-speed rotation, drive end bearing bracket 11 can be stablized and be not easy
Modification.Number the application of reinforcing rib 1101 is not construed as limiting.
Through obtained by test of many times, it is preferred that the number of reinforcing rib 1101 is set 8 by the application, 8 reinforcing ribs
1101 can cover multiple directions, do the stability and structural strength of the raising drive end bearing bracket 11 of limits.
It should be understood that the above-mentioned specific embodiment of the utility model is used only for exemplary illustration or explains this reality
With novel principle, without constituting limitations of the present invention.Therefore, in the spirit and scope without departing from the utility model
In the case of any modification, equivalent substitution, improvement and etc. done, should be included within the scope of protection of this utility model.In addition,
The appended claims for the utility model are intended to cover to fall into attached claim scope and boundary or this range and boundary
Whole change and modification in equivalent form.
Claims (8)
1. a kind of 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan characterized by comprising
Rear end cap, the rear end cap are recessed inwardly to form the accommodating cavity with an opening；
Drive end bearing bracket, lid are set the opening in the accommodating cavity and are connect with the rear end cap；
Runner assembly is sheathed in the drive end bearing bracket and the rear end cap, the both ends of the runner assembly respectively with the rear end
Lid and drive end bearing bracket rotation connection；
Stator is arranged in the accommodating cavity, and the stator includes iron core and multiple windings for being wound around on the iron core, institute
Stating iron core includes stator yoke and around the stator yoke and along 12 to extend radially outwardly the tooth of the stator yoke
Item forms a tooth socket between the two neighboring rack gear, and each one end of the rack gear far from the stator yoke is circumferentially prolonged
It stretches to form a crown, wherein the lateral surface of each crown is recessed inwardly to form symmetrical two auxiliary tank, wherein described fixed
Circumferential direction etc. of the center line of all tooth sockets of the center line and stator of all auxiliary tanks of son along the stator
It is spaced apart；
Rotor is arranged in the accommodating cavity and connect with the runner assembly, and the rotor is disposed around on the outside of the stator, institute
State the permanent magnetism that rotor includes: the rotor yoke connecting with the inner sidewall of the rear end cap and is arranged on the rotor yoke
Iron, the number of poles of the permanent magnet are 14 poles, and the rotor rotates to drive the rotation under the magnetic fields of the stator
Component rotation.
2. 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan according to claim 1, which is characterized in that the auxiliary tank
For arc groove.
3. 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan according to claim 2, which is characterized in that the auxiliary tank
Width substantially 3mm.
4. 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan according to claim 3, which is characterized in that the auxiliary tank
Distance from bottom described in crown medial surface distance substantially 1mm.
5. 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan according to claim 4, which is characterized in that the permanent magnet
Thickness substantially 5mm.
6. 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan according to claim 5, which is characterized in that the rear end cap
Thickness substantially 2mm.
7. 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan described in -6 any one according to claim 1, which is characterized in that
Side on the drive end bearing bracket far from the rear end cap is provided with a plurality of reinforcing rib, and a plurality of reinforcing rib is along the drive end bearing bracket
Center is circumferentially arranged and radially extending along the drive end bearing bracket, for reinforcing the structural strength of the drive end bearing bracket.
8. 14 pole, the 12 slot low noise variable-frequency motor of ceiling fan according to claim 7, which is characterized in that the reinforcing rib
It is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920663453.0U CN209593238U (en) | 2019-05-10 | 2019-05-10 | A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920663453.0U CN209593238U (en) | 2019-05-10 | 2019-05-10 | A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan |
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| Publication Number | Publication Date |
|---|---|
| CN209593238U true CN209593238U (en) | 2019-11-05 |
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ID=68347269
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920663453.0U Active CN209593238U (en) | 2019-05-10 | 2019-05-10 | A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan |
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| CN (1) | CN209593238U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980805A (en) * | 2017-12-28 | 2019-07-05 | 江苏联博精密科技有限公司 | A kind of new and effective self-balancing rotor of motor |
| CN110224569A (en) * | 2019-05-10 | 2019-09-10 | 上海晶丰明源半导体股份有限公司 | A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan |
-
2019
- 2019-05-10 CN CN201920663453.0U patent/CN209593238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980805A (en) * | 2017-12-28 | 2019-07-05 | 江苏联博精密科技有限公司 | A kind of new and effective self-balancing rotor of motor |
| CN110224569A (en) * | 2019-05-10 | 2019-09-10 | 上海晶丰明源半导体股份有限公司 | A kind of 14 pole, 12 slot low noise variable-frequency motor of ceiling fan |
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