CN209593227U - A kind of ceiling fan even air gap brushless single phase motor - Google Patents

A kind of ceiling fan even air gap brushless single phase motor Download PDF

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Publication number
CN209593227U
CN209593227U CN201920663310.XU CN201920663310U CN209593227U CN 209593227 U CN209593227 U CN 209593227U CN 201920663310 U CN201920663310 U CN 201920663310U CN 209593227 U CN209593227 U CN 209593227U
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China
Prior art keywords
stator
air gap
auxiliary flute
ceiling fan
motor
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CN201920663310.XU
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Chinese (zh)
Inventor
钱志存
田军
唐小元
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Zhongshan Jingjiu Electric Machinery Co Ltd
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Zhongshan Jingjiu Electric Machinery Co Ltd
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Abstract

This application discloses a kind of ceiling fan even air gap brushless single phase motors, ceiling fan passes through setting stator with even air gap brushless single phase motor, stator includes the winding of iron core and coiling on iron core, iron core includes: stator yoke and circumferential around stator yoke and along the multiple rack gears for radially extending setting of stator yoke, a tooth socket is formed between two adjacent rack gears, each rack gear circumferentially forms teeth portion far from one end of stator yoke, wherein, phase the same side of the inner surface of all teeth portion offers an auxiliary flute;Rotor is rotatably arranged in upper end cover around stator, and rotor includes the circumferential multipair permanent magnet being arranged on the interior surface of upper end and the rotation shaft assembly being rotatably penetrated and arranged in upper end cover and lower cover;Wherein, auxiliary flute can reduce the detent torque in rotor rotation process, reduce the vibration in the brushless motor course of work, to reduce noise when brushless motor work.

Description

A kind of ceiling fan even air gap brushless single phase motor
Technical field
The utility model belongs to technical field of motor manufacture more particularly to a kind of ceiling fan even air gap brushless single phase electricity Machine.
Background technique
Permanent magnet synchronous motor has many advantages, such as that torque ratio of inertias is big, revolving speed control is accurate, is applied to electricity more and more extensively Electrical automobile, numerically-controlled machine tool, the industries such as servo motor, currently, permanent magnet synchronous motor is divided into the uniform synchronous motor of air gap and air gap Non-uniform synchronous motor, since field waveform is more uniform, when operation, vibration is smaller, operation is made an uproar for the uniform synchronous motor of air gap Sound is low, but the location torque of the uniform synchronous motor of air gap is larger, and location torque is a kind of intrinsic phenomenon of magneto, fixed The torque larger torque for easily causing motor output in position is unstable, influences the performance of motor, is easy to cause vibration and noise, uneven The synchronous motor location torque of even air gap is smaller but due to non-uniform air-gap, and field waveform is easy to happen distortion, causes motor Vibration and noise are generated in operation process, is easy to cause temperature to increase when serious, motor bearings are damaged, when motor is mounted on ceiling fan On, ceiling fan will be easy to cause to generate noise, influence the experience of user.
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 ceiling fan even air gap brushless single phase electricity Machine causes motor to be easy to happen vibration during rotation and generates largely to solve existing motor since cogging torque is excessive The technical issues of torque of noise and motor output is unstable, influences motor performance.
(2) technical solution
To achieve the above object, technical solution provided by the present application is as follows:
A kind of ceiling fan even air gap brushless single phase motor comprising:
Upper end cover and lower cover, upper and lower end caps are oppositely arranged;
Stator is arranged in lower cover, and stator includes the winding of iron core and coiling on iron core, and iron core includes: stator Yoke portion and circumferential around stator yoke and along the multiple rack gears for radially extending setting of stator yoke, two adjacent rack gears it Between form a tooth socket, each rack gear circumferentially forms teeth portion far from one end of stator yoke, wherein all teeth portion it is interior The phase the same side on surface offers an auxiliary flute;
Rotor is rotatably arranged in upper end cover around stator, and rotor includes circumferential is arranged on the interior surface of upper end Multipair permanent magnet and the rotation shaft assembly that is rotatably penetrated and arranged in upper end cover and lower cover;
Wherein, auxiliary flute can reduce the detent torque in rotor rotation process, reduce in the brushless motor course of work Vibration, to reduce noise when brushless motor work.
Into once, the tooth socket number of stator is 12 slots, and the logarithm of permanent magnet is 4,5,7 or 8 pairs.
Into once, the width of rebate of auxiliary flute substantially 3mm.
Into once, the distance between the slot bottom of auxiliary flute and teeth portion outer surface are at least 1mm.
Into once, auxiliary flute is arc-shaped auxiliary flute.
Into once, auxiliary flute is rectangle auxiliary flute.
Into once, auxiliary flute is zigzag auxiliary flute.
By above technical solution, the beneficial effects of the present application are as follows: ceiling fan is logical with even air gap brushless single phase motor Cross setting stator, stator includes the winding of iron core and coiling on iron core, and iron core includes: stator yoke and around stator yoke Portion is circumferential and forms a tooth socket between the multiple rack gears for radially extending setting of stator yoke, two adjacent rack gears, each Rack gear circumferentially forms teeth portion far from one end of stator yoke, wherein opens phase the same side of the inner surface of all teeth portion Equipped with an auxiliary flute;Rotor is rotatably arranged in upper end cover around stator, and rotor includes circumferential is arranged in upper end cover Multipair permanent magnet on inner surface and the rotation shaft assembly being rotatably penetrated and arranged in upper end cover and lower cover;Wherein, it assists Groove can reduce the detent torque in rotor rotation process, the vibration in the brushless motor course of work be reduced, to reduce brushless Noise when motor works.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ceiling fan of the invention with the stator of even air gap brushless single phase motor first embodiment;
Fig. 2 is the enlarged drawing of the part A in Fig. 1;
Fig. 3 is the structural schematic diagram of ceiling fan of the invention with the stator of even air gap brushless single phase motor second embodiment;
Fig. 4 is the enlarged drawing of the part B in Fig. 3;
Fig. 5 is the structural schematic diagram of ceiling fan of the invention with the stator of even air gap brushless single phase motor 3rd embodiment;
Fig. 6 is the enlarged drawing of the C portion in Fig. 5;
Fig. 7 is the explosive view of ceiling fan of the invention with even air gap brushless single phase motor;
Fig. 8 is the stator teeth enlarged drawing of ceiling fan of the invention with even air gap brushless single phase motor;
Fig. 9, which is ceiling fan of the invention, passes through the resulting location torque of finite element analysis with even air gap brushless single phase motor Schematic diagram;
Figure 10 is the signal that the uniform brushless single phase motor of existing air gap passes through the resulting location torque of finite element analysis Figure;
Figure 11 a is ceiling fan of the invention even air gap brushless single phase noise of motor analysis chart;
Figure 11 b is the brushless single phase noise of motor analysis chart of existing non-uniform air-gap;
Appended drawing reference:
1: stator;2: iron core;201: teeth portion;202: auxiliary flute;203: rack gear;204: stator yoke;205: tooth socket;3: Upper end cover;4: bearing;5: rotation axis;6: upper skeleton;7: winding;8: fixing piece;9: lower skeleton;10: permanent magnet etc. divides fixed block; 11: permanent magnet;12: lower cover.
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.
Permanent magnet synchronous motor has many advantages, such as that torque ratio of inertias is big, revolving speed control is accurate, is applied to electricity more and more extensively Electrical automobile, numerically-controlled machine tool, the industries such as servo motor, currently, permanent magnet synchronous motor is divided into the uniform synchronous motor of air gap and air gap Non-uniform synchronous motor, since field waveform is more uniform, when operation, vibration is smaller, operation is made an uproar for the uniform synchronous motor of air gap Sound is low, but the location torque of the uniform synchronous motor of air gap is larger, and location torque is a kind of intrinsic phenomenon of magneto, fixed The torque larger torque for easily causing motor output in position is unstable, influences the performance of motor, is easy to cause vibration and noise, uneven The synchronous motor location torque of even air gap is smaller but due to non-uniform air-gap, and field waveform is easy to happen distortion, causes motor Vibration and noise are generated in operation process, is easy to cause temperature to increase when serious, are damaged motor bearings 4, are hung when motor is mounted on On fan, ceiling fan will be easy to cause to generate noise, influence the experience of user.
Existing motor there are aiming at the problem that, a kind of ceiling fan provided by the utility model even air gap brushless single phase electricity Machine, referring specifically to Fig. 1-Figure 11 b comprising:
Upper end cover 3 and lower cover 12, upper and lower end caps 12 are oppositely arranged;
Stator 1 is arranged in lower cover 12, and stator 1 includes the winding 7 of iron core 2 and coiling on iron core 2, and iron core 2 wraps It includes: stator yoke 204 and circumferential around stator yoke 204 and along the multiple rack gears for radially extending setting of stator yoke 204 203, a tooth socket 205 is formed between two adjacent rack gears 203, and each one end of rack gear 203 far from stator yoke 204 is circumferentially Extend to form teeth portion 201, wherein phase the same side of the inner surface of all teeth portion 201 offers an auxiliary flute 202;
Rotor is rotatably arranged in upper end cover 3 around stator 1, and rotor includes circumferential is arranged in 3 inner surface of upper end cover On multipair permanent magnet and 5 component of rotation axis that is rotatably penetrated and arranged in upper end cover 3 and lower cover 12, multiple permanent magnets 11 Between be provided with that permanent magnet etc. divides fixed block 10 and permanent magnet 11 and the outer surface of teeth portion 201 are oppositely arranged;
Wherein, auxiliary flute 202 can reduce the detent torque in rotor rotation process, reduce in the brushless motor course of work Vibration, thus reduce brushless motor work when noise.
The application carries out 201 material reducing of teeth portion by phase the same side of 201 inner surface of teeth portion in multiple rack gears 203, makes this Position formed an auxiliary flute 202, after which is set, same teeth portion 201 by material reducing position, that is, auxiliary flute 202 position is thinner compared to non-material reducing position, the magnetic line of force more easily by auxiliary flute 202 position so that should The magnetic flux of position more easily reachs saturation, and after the magnetic flux of the position of auxiliary flute 202 reaches saturation, the magnetic line of force is distributed just Overall offset can occur, according to Ampere's law analysis it is found that stator 1 can be applied to rotor one tangential point for driving rotor rotation Power, so that the location torque of the application motor is smaller, also, since the air gap of the upper surface of all teeth portion 201 of the application is equal Even, compared to the field waveform of the motor of non-uniform air-gap air gap, the field waveform meeting of the motor of the even air gap of the application More steady, field waveform is also less likely to occur to distort, so that the operating of motor is more steady.
As shown in fig. 7, rotation axis 5 is fixed by bearing 4 specifically, 5 component of rotation axis includes rotation axis 5 and bearing 4 In upper end cover 3 and lower cover 12, iron core 2 is by upper skeleton 6, lower skeleton 9 and wears between upper skeleton 6 and lower skeleton 9 Fixing piece 8 is fixed in rotation axis 5, and when stator 1 is powered, rotor is driven rotation axis 5 is synchronous to turn by the magnetic field force of stator 1 It is dynamic.
Fig. 1-Fig. 6 is please referred to, when the application carries out material reducing and forms auxiliary flute 202 to teeth portion 201, auxiliary flute 202 It can be various shapes, for example, first embodiment, auxiliary flute 202 can be rectangle auxiliary flute 202, such as Fig. 1 and Fig. 2 institute Showing or second embodiment, auxiliary flute 202 is arc auxiliary flute 202, as shown in Figure 3 and Figure 4 or 3rd embodiment, Auxiliary flute 202 is zigzag auxiliary flute 202, as shown in Figure 5 and Figure 6.The shape of the application degree auxiliary flute 202 does not limit It is fixed, it need to only guarantee to be applied to after the condition for being met saturation by the magnetic flux of the i.e. auxiliary flute 202 in material reducing position and stator 1 are powered The detent torque of rotor is greater than the location torque of stator 1.Preferably, the application is auxiliary by the setting camber of auxiliary flute 202 Groove 202 is helped, auxiliary flute 202, which is arranged to arcuate structure, can guarantee the structural strength of teeth portion 201.
Preferably, the slot number of stator 1 is 12 slots by the application, is 4,5,7 or 8 by the number of pole-pairs of the permanent magnet 11 of rotor Right, the motor of above-mentioned pole slot cooperation is all 7 motor of concentratred winding, and winding 7 is directly wound on individual 1 tooth of stator, easy to produce Processing.In motor operation course, since the loss of electric machine iron core 2 is directly proportional to motor speed, in order to reduce total damage of motor Consumption selects small permanent magnet logarithm when motor speed is higher (10000-20000r/min), selects the extremely right of permanent magnet 11 Number is 4,5, (is lower than 10000r/min) when motor speed is lower, in order to improve the air gap flux density of motor, so that the list of motor Position electric current output torque is bigger, selects big permanent magnet logarithm, and selecting the number of pole-pairs of permanent magnet 11 is 7,8.
Referring to Fig. 8, preferred, the width of rebate d2 substantially 3mm of auxiliary flute and the slot of auxiliary flute 202202 The distance between bottom and 201201 outer surface of teeth portion d1 are at least 1mm, can guarantee so strong by 201201 structure of teeth portion of material reducing Degree avoids teeth portion 201 from being easily damaged since thinner thickness causes structural strength to reduce.
Please refer to Fig. 9 and Figure 10, the abscissa of Fig. 9 and Figure 10 are the time, and ordinate is location torque, wherein Fig. 9 is this The schematic diagram for the location torque that the motor of uniform 201 material reducing of teeth portion of the air gap of application is obtained by finite element analysis, from figure It is found that the peak-to-peak value of the location torque of the motor of the application is 1.322mN.m, Figure 10 is logical for the uniform motor of existing air gap The schematic diagram for crossing the location torque that finite element analysis is obtained, from figure it is found that the peak-to-peak value of the location torque of existing motor is 9.796mN.m is compared by the peak-to-peak value of two motors it is found that the motor of uniform 201 material reducing of teeth portion of the air gap of the application is opposite Reducing in the location torque of existing motor about reduces an order of magnitude.
Please referring to Figure 11 a and Figure 11 b, Figure 11 a and Figure 11 b abscissa is the time, and ordinate is that location torque is noise point Shellfish value, wherein Figure 11 a is the motor by uniform 201 material reducing of teeth portion of air gap of the application measured by noise testing equipment Noise analysis figure, Figure 11 b is the noise analysis figure by the motor of non-uniform air-gap measured by noise testing equipment, from two Map analysis is it is found that the noise average of the motor of the application is 50 decibels, less than 55 points of the noise average of existing motor Shellfish.
The following are the specific steps for opening up auxiliary flute 202:
S1: material reducing is carried out to the same side of 201 inner surface of all teeth portion of stator 1, is allowed to be recessed inwardly to form an auxiliary Groove 202;
S2: judge whether the magnetic flux at auxiliary flute 202 is saturated by finite element software;
S3: if so, under 1 unpowered state of stator, the location torque for the rotor being rotatably assorted with stator 1 is obtained;
S4: obtaining the orientation angle of rotor, and orientation angle is the arbitrary tooth of stator 1 after stopping is freely rotated of stator 1 Angle between the center line of the center line in portion 201 permanent magnet 11 corresponding with the teeth portion 201;
S5: the starting of rotor of the stator 1 after being passed through electric current is calculated by finite element software according to the orientation angle got Torque;
S6: judging whether detent torque is greater than location torque, if so, it is recessed that the auxiliary flute 202 is set as standard auxiliary Slot 202, if it is not, return step S1 continues material reducing to teeth portion 201, the detent torque of the rotor after material reducing is greater than positioning Torque.
Said stator 1 is needed to meet two conditions after material reducing, first: the position magnetic flux needs of auxiliary flute 202 reach To saturation, second: the detent torque that stator 1 is applied to rotor need to be greater than the location torque of rotor.The position magnetic of auxiliary flute 202 Flux saturation purpose is to make magnetic line of force distribution that overall offset occur, and stator 1 can be applied to one tangential component of rotor, and rotor opens The purpose that dynamic torque need to be greater than location torque is to guarantee that stator 1 is applied to the active force energy band turn rotation of rotor.
The motor of the application is mainly used in ceiling fan field, since the outer surface of the stator 1 of this setting motor is uniform gas Gap, auxiliary flute 202, auxiliary flute 202 can reduce motor make the motor of the application have low noise and
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 (7)

1. a kind of ceiling fan even air gap brushless single phase motor characterized by comprising
Upper end cover and lower cover, upper and lower end caps are oppositely arranged;
Stator is arranged in the lower cover, and the stator includes the winding of iron core and coiling on the iron core, the iron Core includes: stator yoke and circumferential around stator yoke and along the multiple rack gears for radially extending setting of stator yoke, adjacent Two rack gears between form a tooth socket, each one end of the rack gear far from the stator yoke is circumferentially formed Teeth portion, wherein phase the same side of the inner surface of all teeth portion offers an auxiliary flute;
Rotor is rotatably arranged in the upper end cover around the stator, and the rotor includes circumferential is arranged on described Multipair permanent magnet on end cap inner surface and the rotation axis group being rotatably penetrated and arranged in the upper end cover and the lower cover Part;
Wherein, the auxiliary flute can reduce the detent torque in the rotor rotation process, reduce the brushless motor work Vibration in the process, to reduce noise when brushless motor work.
2. ceiling fan according to claim 1 even air gap brushless single phase motor, which is characterized in that the tooth socket of the stator Number is 12 slots, and the logarithm of the permanent magnet is 4,5,7 or 8 pairs.
3. ceiling fan according to claim 2 even air gap brushless single phase motor, which is characterized in that the auxiliary flute Width of rebate substantially 3mm.
4. ceiling fan according to claim 3 even air gap brushless single phase motor, which is characterized in that the auxiliary flute The distance between slot bottom and the teeth portion outer surface are at least 1mm.
5. ceiling fan according to any one of claims 1-4 even air gap brushless single phase motor, which is characterized in that described Auxiliary flute is arc-shaped auxiliary flute.
6. ceiling fan according to any one of claims 1-4 even air gap brushless single phase motor, which is characterized in that described Auxiliary flute is rectangle auxiliary flute.
7. ceiling fan according to any one of claims 1-4 even air gap brushless single phase motor, which is characterized in that described Auxiliary flute is zigzag auxiliary flute.
CN201920663310.XU 2019-05-10 2019-05-10 A kind of ceiling fan even air gap brushless single phase motor Active CN209593227U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920663310.XU CN209593227U (en) 2019-05-10 2019-05-10 A kind of ceiling fan even air gap brushless single phase motor

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Application Number Priority Date Filing Date Title
CN201920663310.XU CN209593227U (en) 2019-05-10 2019-05-10 A kind of ceiling fan even air gap brushless single phase motor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111404296A (en) * 2020-04-17 2020-07-10 重庆川仪速达机电有限公司 High-starting-torque rotor structure and manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111404296A (en) * 2020-04-17 2020-07-10 重庆川仪速达机电有限公司 High-starting-torque rotor structure and manufacturing method

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