Noise reduction type synchronous motor with novel structure and electric fan with noise reduction type synchronous motor

Abstract

The utility model discloses a noise reduction type new structure synchronous motor and an electric fan with the same, the noise reduction type new structure synchronous motor comprises a casing, a stator and a rotor, the rotor has eight pairs of poles, the casing is provided with a central shaft, the rotor is sleeved on the central shaft, and the rotor is connected with a motor output shaft through a transmission gear set. According to the noise reduction type synchronous motor with the novel structure, by reducing the rotating speed of the synchronous motor rotor, the rotating speed of an original 4-antipode (8-pole) permanent magnet synchronous motor rotor is innovatively modified to be 375 r / min from 750 r / min to 375 r / min, the rotating speed of the modified noise reduction type synchronous motor with the novel structure is reduced by one time, the transmission ratio of a transmission gear set is reduced, and the noise reduction performance is improved. The gears of the transmission gear set operate more stably, vibration is reduced, vibration and noise are reduced from the source, the noise problem generated when the electric fan shakes a head is solved, and a more quiet and comfortable use environment is brought to a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, especially a new structure synchronous motor of sound reduction type and electric fan with same. BACKGROUND

[0002] With the development of science and technology and the improvement of people's living standards, people's requirements for life quality are higher and higher, and the quality requirements for fans are also higher and higher.

[0003] At present, the noise problem of electric fan when shaking is the most prominent, which seriously affects the user experience. After detailed comparison investigation and analysis, the root cause of the noise problem of electric fan when shaking is mainly in the synchronous motor used by the fan. As the key component of the electric fan air guide shaking, the performance of the permanent magnet synchronous motor is crucial. At present, the synchronous motor used by the electric fan has the problem of excessive noise.

[0004] Therefore, a new structure synchronous motor of sound reduction type and electric fan with same are urgently needed. INVENTION CONTENTS

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a new structure synchronous motor of sound reduction type and electric fan with same.

[0006] The technical scheme adopted by the utility model to solve its technical problems is: a new structure synchronous motor of sound reduction type, comprising a shell, a stator and a rotor, the rotor is 8 pairs of poles; the shell is provided with a central shaft, the rotor is sleeved on the central shaft, a support plate is installed in the interior of the shell, the rotor is connected with a motor output shaft through a transmission gear set, and the transmission gear set is installed on the side of the support plate away from the rotor.

[0007] As a further improvement of the utility model: the rotor comprises a rotor iron core and 16 permanent magnets, the rotor iron core is provided with 16 permanent magnet grooves, and the permanent magnets are arranged in the permanent magnet grooves.

[0008] As a further improvement of the utility model: one end of the central shaft is fixedly arranged at the middle position of the bottom wall of the shell, the other end of the central shaft is provided with a driving gear, and the driving gear is connected with the rotor; a face cover is arranged at the opening of the shell, the rotor is located at the position of the shell close to the bottom wall, and the transmission gear set is located at the position of the shell close to the opening.

[0009] As a further improvement of the utility model: the driving gear is connected with the transmission gear set, and the transmission gear set is connected with the motor output shaft.

[0010] As a further improvement of the utility model: the transmission gear set includes a first driven gear, a second driven gear, a third driven gear and a fourth driven gear, the driving gear is engaged with the first driven gear, the first driven gear, the second driven gear, the third driven gear and the fourth driven gear are sequentially engaged, and the fourth driven gear is engaged with the motor output shaft.

[0011] As a further improvement of the utility model: the first driven gear, the third driven gear and the fourth driven gear are double gear structures, the large gear of the first driven gear is engaged with the driving gear, and the small gear of the first driven gear is engaged with the second driven gear.

[0012] As a further improvement of the utility model: the small gear in the third driven gear is engaged with the second driven gear, the large gear in the third driven gear is engaged with the large gear in the fourth driven gear, and the small gear in the fourth driven gear is engaged with the motor output shaft.

[0013] As a further improvement of the utility model: the permanent magnet is made of high-performance permanent magnetic material to improve the efficiency and stability of the motor and indirectly reduce the noise level.

[0014] As a further improvement of the utility model: the shell is made of sound insulation material to effectively block the external propagation of internal noise.

[0015] The utility model provides a kind of electric fan with the synchronous motor of new structure of sound reduction. The synchronous motor of new structure of sound reduction, including shell, stator and rotor, the rotor is 8 pairs of pole;The shell is equipped with center shaft, the rotor is sleeved on center shaft, the inside of the shell is equipped with support plate, and the rotor is connected with motor output shaft by transmission gear set, and the transmission gear set is installed on the side of support plate away from the rotor.

[0016] Compared with prior art, the utility model has the beneficial effects that:

[0017] 1. The synchronous motor of new structure of sound reduction of the utility model reduces the speed of synchronous motor rotor, and the speed of original 4 pairs of pole (8 pole) permanent magnet synchronous motor rotor is 750r / min, and the speed of innovative modification 8 pairs of pole (16 pole) synchronous motor rotor is 375r / min, the speed of modified synchronous motor of new structure of sound reduction is reduced by half, the transmission ratio of transmission gear set is reduced, the gear of transmission gear set runs more stably, vibration is reduced, vibration and noise are reduced at source, the noise problem when electric fan shakes head is solved, and more quiet and comfortable use environment is brought to user.

[0018] 2. The utility model discloses a new structure synchronous motor of sound reduction type improves its reliability through the adjustment motor synchronous speed under the premise of not changing motor use performance, and significantly reduces noise, reduces the noise of electric fan head shaking part to below 80% of original level, noise significantly reduces, and brings the use experience of nearly silence for the user.

[0019] 3. The utility model discloses a new structure synchronous motor of sound reduction type ensures that gear runs more stably through the reduction of transmission ratio of transmission gear set, and the stable running state and the reduced vibration help to prolong the service life of motor and related components, and improve the reliability of motor. DRAWINGS

[0020] Figure 1 It is the structure schematic drawing of the rotor of the utility model.

[0021] Figure 2 It is the structure schematic drawing of the synchronous motor of the utility model.

[0022] Figure 3 It is the internal structure schematic drawing of the synchronous motor of the utility model.

[0023] Figure 4 It is the structure schematic drawing of the rotor of 4 pairs of pole permanent magnet synchronous motor in prior art.

[0024] Reference signs:

[0025] 1, rotor;

[0026] 2, permanent magnet slot;

[0027] 3, machine shell;

[0028] 4, face cover;

[0029] 5, central shaft;

[0030] 6, support plate;

[0031] 7, motor output shaft;

[0032] 8, transmission gear set;

[0033] 9, first driven gear;

[0034] 10, second driven gear;

[0035] 11, third driven gear;

[0036] 12, fourth driven gear. DETAILED DESCRIPTION

[0037] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. The present application will be further described by way of example with reference to the accompanying drawings.

[0038] The utility model aims at solving the noise problem produced when electric fan shakes head, through in-depth analysis, finds that the rotation speed of synchronous motor is one of main factors of influence noise. Therefore, it is urgent to develop and innovate structure's synchronous motor, and fundamentally solve the noise problem produced when synchronous motor of electric fan shakes head.

[0039] Case one:

[0040] Please refer to Figures 1-4 A new structure synchronous motor of reducing sound, including stator and rotor 1, the rotor 1 is 8 pairs of poles, the rotor 1 includes rotor 1 core and 16 permanent magnets, the rotor 1 core is set with 16 permanent magnet grooves 2, and the permanent magnet is arranged in the permanent magnet groove 2.

[0041] The utility model discloses a new structure synchronous motor of reducing sound, by reducing the rotation speed of synchronous motor rotor 1, the rotation speed of original 4 pairs of pole (8 poles) permanent magnet synchronous motor rotor 1 is 750r / min, and is innovated and is modified as 8 pairs of pole (16 poles) synchronous motor rotor 1 rotation speed is 375r / min, and the rotation speed of the new structure synchronous motor of reducing sound after modification reduces one time, and the transmission gear set 8 transmission ratio reduces, and the gear operation of transmission gear set 8 is more stable, and vibration reduces, and the generation of vibration and noise is reduced on the source, and the noise problem in the use process is solved.

[0042] The synchronous motor further includes a shell 3, the opening of the shell 3 is provided with a cover 4, the shell 3 is provided with a central shaft 5, the rotor 1 is sleeved on the central shaft 5, a supporting plate 6 is installed in the shell 3, the rotor 1 is connected with a motor output shaft 7 through a transmission gear set 8, and the transmission gear set 8 is installed on the side, away from the rotor 1, of the supporting plate 6.

[0043] One end of the central shaft 5 is fixedly arranged at the middle position of the bottom wall of the shell 3, the other end of the central shaft 5 is provided with a driving gear, and the driving gear is connected with the rotor 1.

[0044] The rotor 1 is located at the position close to the bottom wall of the casing 3, and the transmission gear set 8 is located at the position close to the opening of the casing 3.

[0045] The driving gear is connected with the transmission gear set 8, and the transmission gear set 8 is connected with the motor output shaft 7.

[0046] Specifically, the transmission gear set 8 comprises a first driven gear 9, a second driven gear 10, a third driven gear 11 and a fourth driven gear 12, the driving gear is engaged with the first driven gear 9, the first driven gear 9, the second driven gear 10, the third driven gear 11 and the fourth driven gear 12 are sequentially engaged, and the fourth driven gear 12 is engaged with the motor output shaft 7.

[0047] The first driven gear 9, the third driven gear 11 and the fourth driven gear 12 are double gear structures, the large gear of the first driven gear 9 is engaged with the driving gear, the small gear of the first driven gear 9 is engaged with the second driven gear 10, the small gear in the third driven gear 11 is engaged with the second driven gear 10, the large gear in the third driven gear 11 is engaged with the large gear in the fourth driven gear 12, and the small gear in the fourth driven gear 12 is engaged with the motor output shaft 7.

[0048] The permanent magnet is made of high-performance permanent magnet material, so as to improve the efficiency and stability of the motor and indirectly reduce the noise level.

[0049] The casing 3 is made of sound insulation material, and can effectively block the internal noise from spreading to the outside.

[0050] The noise-reducing new structure synchronous motor improves the reliability by adjusting the synchronous speed of the motor without changing the use performance of the motor, and significantly reduces the noise, reduces the noise of the electric fan head part to less than 80% of the original level, and significantly reduces the noise, and brings the user a nearly silent use experience.

[0051] The noise-reducing new structure synchronous motor reduces the transmission ratio of the transmission gear set 8, ensures that the gear runs more stably, and the stable running state and reduced vibration help to prolong the service life of the motor and related components, and improve the reliability of the motor.

[0052] The noise-reducing new structure synchronous motor can significantly reduce the noise and bring the user a more quiet and comfortable use environment.

[0053] The performance parameters of the 4-pole synchronous motor before improvement and the 8-pole noise-reducing new structure synchronous motor of the application are compared, and the performance parameter comparison is shown in Table 1. The 8-pole noise-reducing new structure synchronous motor of the application is verified by long-term life test, and the life test verification result is shown in Table 2.

[0054]

[0055]

[0056] The results show that the 8-pole sound-reducing synchronous motor has obvious performance improvement, and no noise problem occurs during long-term use, and the reliability is obviously improved.

[0057] Case two:

[0058] The electric fan has a sound-reducing synchronous motor. The sound-reducing synchronous motor comprises a stator and a rotor 1, the rotor 1 is 8-pole, the rotor 1 comprises a rotor 1 core and 16 permanent magnets, the rotor 1 core is provided with 16 permanent magnet grooves 2, and the permanent magnets are arranged in the permanent magnet grooves 2. The synchronous motor further comprises a shell 3, the opening of the shell 3 is provided with a face cover 4, the shell 3 is provided with a central shaft 5, the rotor 1 is sleeved on the central shaft 5, the inside of the shell 3 is provided with a support plate 6, and the rotor 1 and a motor output shaft 7 are connected through a transmission gear set 8.

[0059] One end of the central shaft 5 is fixedly arranged at the middle position of the bottom wall of the shell 3, and the other end of the central shaft 5 is provided with a driving gear connected with the rotor 1.

[0060] The rotor 1 is located at the position close to the bottom wall of the shell 3, and the transmission gear set 8 is located at the position close to the opening of the shell 3. The driving gear is connected with the transmission gear set 8, and the transmission gear set 8 is connected with the motor output shaft 7.

[0061] The transmission gear set 8 comprises a first driven gear 9, a second driven gear 10, a third driven gear 11 and a fourth driven gear 12, the driving gear is engaged with the first driven gear 9, the first driven gear 9, the second driven gear 10, the third driven gear 11 and the fourth driven gear 12 are sequentially engaged, and the fourth driven gear 12 is engaged with the motor output shaft 7.

[0062] The first driven gear 9, the third driven gear 11 and the fourth driven gear 12 are double-gear structures, the large gear of the first driven gear 9 is engaged with the driving gear, and the small gear of the first driven gear 9 is engaged with the second driven gear 10; the small gear in the third driven gear 11 is engaged with the second driven gear 10, and the large gear in the third driven gear 11 is engaged with the large gear in the fourth driven gear 12; and the small gear in the fourth driven gear 12 is engaged with the motor output shaft 7.

[0063] The permanent magnet is made of high-performance permanent magnet material, so that the efficiency and stability of the motor are improved, and the noise level is indirectly reduced.

[0064] The novel structure synchronous motor of the utility model, through reducing the transmission ratio of the transmission gear set, ensures that the gear runs more stably, and the stable running state and the reduced vibration help to prolong the service life of the motor and related components, and improve the reliability of the motor.

[0065] The main function of the utility model is:

[0066] The novel structure synchronous motor of the utility model, through reducing the transmission ratio of the transmission gear set, ensures that the gear runs more stably, and the stable running state and the reduced vibration help to prolong the service life of the motor and related components, and improve the reliability of the motor.

[0067] The novel structure synchronous motor of the utility model, under the premise of not changing the use performance of the motor, improves the reliability by adjusting the synchronous speed of the motor, and significantly reduces the noise, reduces the noise of the electric fan head part to below 80% of the original level, significantly reduces the noise, and brings the user almost silent use experience.

[0068] The novel structure synchronous motor of the utility model, through reducing the transmission ratio of the transmission gear set, ensures that the gear runs more stably, and the stable running state and the reduced vibration help to prolong the service life of the motor and related components, and improve the reliability of the motor.

[0069] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "upper end surface", "lower end surface", "top", "bottom", "left", "right" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of the description of the utility model, so it cannot be understood as the limitation of the actual use direction of the utility model.

[0070] The above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the claims and the specification of the present application.

Claims

1. A new structure synchronous motor of sound reduction type, characterized in that: Including casing, stator and rotor, the rotor is 8 pairs of poles, the casing is equipped with center shaft, the rotor is sleeved on the center shaft, the inside of the casing is installed with support plate, the rotor is connected with motor output shaft through transmission gear set, the transmission gear set is installed on the side of the support plate far from the rotor.

2. A new structure synchronous motor of sound reduction type according to claim 1, characterized in that: The rotor includes rotor core and 16 permanent magnets, the rotor core is provided with 16 permanent magnet grooves, and the permanent magnets are arranged in the permanent magnet grooves.

3. A new structure synchronous motor of sound reduction type according to claim 2, characterized in that: One end of the center shaft is fixedly arranged at the middle position of the bottom wall of the casing, the other end of the center shaft is provided with a driving gear, and the driving gear is connected with the rotor; the opening of the casing is provided with a cover, the rotor is located at the position close to the bottom wall of the casing, and the transmission gear set is located at the position close to the opening of the casing.

4. A new structure synchronous motor of sound reduction type according to claim 3, characterized in that: The driving gear is connected with the transmission gear set, and the transmission gear set is connected with the motor output shaft.

5. A new structure synchronous motor of sound reduction type according to claim 4, characterized in that: The transmission gear set includes first driven gear, second driven gear, third driven gear and fourth driven gear, the driving gear is engaged with the first driven gear, the first driven gear, the second driven gear, the third driven gear and the fourth driven gear are engaged in sequence, and the fourth driven gear is engaged with the motor output shaft.

6. A new structure synchronous motor of sound reducing type according to claim 5, characterized in that: The first driven gear, the third driven gear and the fourth driven gear are double gear structures, the large gear of the first driven gear is engaged with the driving gear, and the small gear of the first driven gear is engaged with the second driven gear.

7. A new structure synchronous motor of sound reduction type according to claim 6, characterized in that: The small gear in the third driven gear is engaged with the second driven gear, the large gear in the third driven gear is engaged with the large gear in the fourth driven gear, and the small gear in the fourth driven gear is engaged with the motor output shaft.

8. A new structure synchronous motor of sound reduction type according to claim 2, characterized in that: The permanent magnet is made of high-performance permanent magnet material.

9. A new structure synchronous motor of sound reduction type according to claim 1, characterized in that: The casing is made of sound insulation material.

10. An electric fan characterized by: A new structure of synchronous motor with sound reduction as claimed in any one of claims 1-9.

Images