CN210041473U - Motor structure applied to brushless dust collector - Google Patents
Motor structure applied to brushless dust collector Download PDFInfo
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- CN210041473U CN210041473U CN201921173712.8U CN201921173712U CN210041473U CN 210041473 U CN210041473 U CN 210041473U CN 201921173712 U CN201921173712 U CN 201921173712U CN 210041473 U CN210041473 U CN 210041473U
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Abstract
The utility model discloses a be applied to brushless dust catcher motor structure, include: the rotor and the stator that overlaps and establish rather than mutually supporting on the rotor, the external diameter of rotor comprises four arc limits and four round limits of evenly distributed, four arc limits and four crisscross settings of round limit evenly be provided with four embedded permanent magnet grooves of rectangle with arc limit one-to-one on the rotor. The utility model has the advantages that: the motor has the mechanical soft characteristic of a series motor, has the large torque output capacity of a permanent magnet synchronous motor, is low in electromagnetic noise and stable in operation, is applied to a dust collector, has the mechanical soft characteristic, and improves the fan efficiency by 13 percent compared with an independent series motor.
Description
Technical Field
The utility model relates to a motor field specifically is a be applied to brushless dust catcher motor structure.
Background
At present, a dust collector generally adopts a series motor, although the series motor has good mechanical soft performance and large idle load and load rotating speed difference, the large torque output of a permanent magnet synchronous motor cannot be realized, the dust collection efficiency is low, the electromagnetic noise is large when the existing motor of an electric tool permanent magnet brushless motor operates, the vibration is large, and the problem that how to combine the series motor and the permanent magnet brushless motor to meet the more extensive market demand becomes the urgent need to be solved by people at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be applied to electric tool and dust catcher motor core structure, solved some current problems that can not possess good mechanical soft performance and big torque output simultaneously.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a motor structure applied to a brushless dust collector comprises: the rotor and the stator are sleeved on the rotor and matched with the rotor, the outer diameter of the rotor consists of four arc edges and four round edges which are uniformly distributed, the four arc edges and the four round edges are arranged in a staggered manner, four rectangular embedded permanent magnet grooves which correspond to the arc edges one to one are uniformly arranged on the rotor, first empty grooves which are mutually communicated with the rectangular embedded permanent magnet grooves are symmetrically arranged on the rotor at two ends of the rectangular embedded permanent magnet grooves, second empty grooves which are mutually communicated with the rectangular embedded permanent magnet grooves are arranged on the rotor at the inner side of the rectangular embedded permanent magnet grooves, magnetic bridge parts are arranged on the rotor between the rectangular embedded permanent magnet grooves and the arc edges, magnetic rib parts are arranged on the rotor between two adjacent first empty grooves, a plurality of stator grooves are uniformly arranged on the stator, and a stator yoke is arranged between the stator grooves and the outer diameter of the stator, the stator between two adjacent stator slots is provided with a tooth wide part, and the inner sides of two ends of each stator slot are provided with tooth shoe angles.
Preferably, the maximum distance between the two symmetrical arc edges is the outer diameter of a rotor magnetic pole, the maximum distance between the two symmetrical circular edges (12) is the outer diameter of a rotor base, the size of the outer diameter of the rotor base is 30.5mm, and the size ratio of the outer diameter of the rotor base to the outer diameter of the rotor magnetic pole is 0.89-0.96.
Preferably, the size of the long edge of the rectangular embedded permanent magnet groove is 9.1mm, and the size ratio of the long edge to the short edge of the rectangular embedded permanent magnet groove is 2-3.
Preferably, the width of the magnetic bridge is 1mm to 2.5 mm.
Preferably, the distance between the outer slot edges of the two symmetrical rectangular embedded permanent magnet slots is 29.54-30.54 mm, and the distance between the inner slot edges of the two symmetrical rectangular embedded permanent magnet slots is 20-23 mm.
Preferably, the width of the magnetic rib is 1mm to 3 mm.
Preferably, permanent magnets are respectively embedded in the rectangular embedded permanent magnet slots, and the distance between the raised magnetic poles on two adjacent permanent magnets is 2-4 mm.
Preferably, the linear distance between the outer groove sides of the two adjacent first empty grooves is 14-16 mm.
Preferably, the width dimension of the stator yoke is 5mm, and the ratio of the width of the tooth wide part to the width of the stator yoke is 1.2-2.
Preferably, the angle of the tooth shoe angle is between 125 ° and 130 °.
Advantageous effects
The utility model provides a be applied to brushless dust catcher motor structure. Compared with the prior art, the method has the following beneficial effects: the motor has the mechanical soft characteristic of a series excited motor, and also has the large torque output capacity of a permanent magnet synchronous motor, the electromagnetic noise is low, the operation is stable, the motor is applied to a dust collector and has the mechanical soft characteristic, the fan efficiency is improved by 13% compared with the single series excited motor, the maximum negative pressure is improved by 28% compared with the same product, the motor has excellent dust collection performance, the purpose of low power and large suction can be realized, the motor has the super service life of more than 2 ten thousand hours (about 500 hours of the motor service life of the series excited dust collector), the motor is applied to an electric tool, the torque of a load rotating speed point can be further improved, the mechanical efficiency of the series excited motor can be exceeded by more than 40%, and.
Drawings
Fig. 1 is a schematic structural view of the rotor of the present invention.
Fig. 2 is a schematic structural diagram of the stator of the present invention.
In the figure: 1. rotor, 2, stator, 11, arc edge, 12, round edge, 13, rectangular embedded permanent magnet slot, 131, outer slot edge, 132, inner slot edge, 14, first empty slot, 141, empty slot outer slot edge, 15, second empty slot, 16, magnetic bridge portion, 17, magnetic rib portion, 21, stator slot, 22, stator yoke, 23, tooth width portion, 24, tooth shoe corner.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a motor structure applied to a brushless dust collector comprises: the rotor comprises a rotor 1 and a stator 2 which is sleeved on the rotor 1 and mutually matched with the rotor, wherein the outer diameter of the rotor 1 consists of four arc-shaped sides 11 and four straight sides 12 which are uniformly distributed, the four arc-shaped sides 11 and the four round sides 12 are arranged in a staggered manner, four rectangular embedded permanent magnet grooves 13 which are in one-to-one correspondence with the arc-shaped sides 11 are uniformly arranged on the rotor 1, first empty grooves 14 which are mutually communicated with the rectangular embedded permanent magnet grooves 13 are symmetrically arranged on the rotor 1 at two ends of each rectangular embedded permanent magnet groove 13, second empty grooves 15 which are mutually communicated with the rectangular embedded permanent magnet grooves 13 are arranged on the rotor 1 at the inner side of each rectangular embedded permanent magnet groove 13, a magnetic bridge part 16 is arranged on the rotor 1 between each rectangular embedded permanent magnet groove 13 and the arc-shaped side 11, a magnetic rib part 17 is arranged on the rotor 1 between each two adjacent first empty grooves 14, and a plurality of stator grooves 21 are uniformly arranged on, a stator yoke 22 is provided between the stator slots 21 and the outer diameter of the stator, a tooth wide portion 23 is provided on the stator 2 between two adjacent stator slots 21, and a tooth shoe angle 24 is provided inside both ends of the stator slot 21. The first and second slots 14 and 15 reduce unwanted magnetic conductance by utilizing the property that the air gap has a weaker magnetic conductance than the ferromagnetic material.
Further, the maximum distance between the two symmetrical arc-shaped edges 11 is the outer diameter of a rotor magnetic pole, the maximum distance between the two symmetrical straight edges 12 is the outer diameter of a rotor base, the size of the outer diameter of the rotor base is 30.5mm, the size ratio of the outer diameter of the rotor base to the outer diameter of the rotor magnetic pole is 0.89-0.96, and the size design aims to reduce high-frequency electromagnetic sound and torque magnetic vibration caused by a tooth magnetic effect, reduce the time of demagnetization and follow current during reversing and facilitate the improvement of the rotating speed during no-load.
Further, the long side size of the rectangular embedded permanent magnet slot 13 is 9.1mm, the ratio of the long side size to the short side size of the rectangular embedded permanent magnet slot 13 is 2-3, the size design is favorable for stronger magnetic tension under one magnetic pole, and meanwhile, the pulse vibration effect between two magnetic poles and the opening of the stator slot is reduced, so that the high-speed stable operation is facilitated.
Further, the central width dimension of the magnetic bridge part 16 is 1 mm-2.5 mm, and the dimension design ensures better mechanical strength at high speed under the condition of providing maximum pulling force.
Further, the distance between the outer slot edges 131 of the two symmetrical rectangular embedded permanent magnet slots 13 is 29.54 mm-30.54 mm, the size design is favorable for reducing the useless magnetic conduction between the two slot bodies, the shaft current effect is brought, the service life of the bearing is prolonged, the distance between the inner slot edges 132 of the two symmetrical rectangular embedded permanent magnet slots 13 is 20 mm-23 mm, and the size design is favorable for placing proper magnets in the slots.
Furthermore, the width dimension of the magnetic rib part 17 is 1 mm-3 mm, so that better mechanical strength is ensured when the rotor rotates at high speed.
Furthermore, permanent magnets are respectively embedded in the rectangular embedded permanent magnet slots 13, and the distance between the raised magnetic poles on two adjacent permanent magnets is 2-4 mm, so that the pulse shock effect between two magnetic poles and the notch of the stator is reduced.
Further, the linear distance between the outer groove edges 141 of the two adjacent first empty grooves 14 is 14 mm-16 mm.
Further, stator yoke 22's broad width size is 5mm, the size ratio of the broad width of tooth wide portion 23 and stator yoke 22's broad width is between 1.2 ~ 2, provides the suitable magnetic conduction of air load, reduces the generating heat that the useless merit of magnetic leakage brought.
Furthermore, the angle of the tooth shoe angle 24 is 125-130 degrees, the pole shoe is provided with a reasonable size, and the magnetic beam is enhanced to improve the empty load conversion rate.
It is noted that, herein, relational terms such as first and second, and the like may 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a be applied to brushless dust catcher motor structure which characterized in that: the method comprises the following steps: the rotor comprises a rotor (1) and a stator (2) which is sleeved on the rotor (1) and matched with the rotor, wherein the outer diameter of the rotor (1) is composed of four arc-shaped edges (11) and four round edges (12) which are uniformly distributed, the four arc-shaped edges (11) and the four round edges (12) are arranged in a staggered manner, four rectangular embedded permanent magnet grooves (13) which correspond to the arc-shaped edges (11) one by one are uniformly arranged on the rotor (1), first empty grooves (14) which are communicated with the rectangular embedded permanent magnet grooves (13) are symmetrically arranged on the rotors (1) at the two ends of the rectangular embedded permanent magnet grooves (13), second empty grooves (15) which are communicated with the rectangular embedded permanent magnet grooves (13) are arranged on the rotor (1) at the inner side of the rectangular embedded permanent magnet grooves (13), and magnetic bridge parts (16) are arranged on the rotor (1) between the rectangular embedded permanent magnet grooves (13) and the arc-shaped edges (11), the magnetic rib part (17) is arranged on the rotor (1) between the two adjacent first empty grooves (14), the stator (2) is uniformly provided with six stator grooves (21), a stator yoke (22) is arranged between the stator grooves (21) and the outer diameter of the stator, a tooth wide part (23) is arranged on the stator (2) between the two adjacent stator grooves (21), and tooth shoe angles (24) are arranged on the inner sides of two ends of the stator grooves (21).
2. The motor structure of claim 1, wherein: the maximum distance between the two symmetrical arc edges (11) is the outer diameter of a rotor magnetic pole, the maximum distance between the two symmetrical circular edges (12) is the outer diameter of a rotor base, the size of the outer diameter of the rotor base is 30.5mm, and the size ratio of the outer diameter of the rotor base to the outer diameter of the rotor magnetic pole is 0.89-0.96.
3. The motor structure of claim 2, wherein: the long side size of the rectangular embedded permanent magnet groove (13) is 9.1mm, and the ratio of the long side size to the short side size of the rectangular embedded permanent magnet groove (13) is 2-3.
4. The motor structure of claim 3, wherein: the central width dimension of the magnetic bridge part (16) is 1-2.5 mm.
5. The motor structure of claim 1, wherein: the distance between the outer slot edges (131) of the two symmetrical rectangular embedded permanent magnet slots (13) is 29.54-30.54 mm, and the distance between the inner slot edges (132) of the two symmetrical rectangular embedded permanent magnet slots (13) is 20-23 mm.
6. The motor structure of claim 1, wherein: the width dimension of the magnetic rib part (17) is between 1mm and 3 mm.
7. The motor structure of claim 1, wherein: permanent magnets are respectively embedded in the rectangular embedded permanent magnet grooves (13), and the distance between the raised magnetic poles on two adjacent permanent magnets is 2-4 mm.
8. The motor structure of claim 1, wherein: the linear distance between the outer groove edges (141) of the two adjacent first empty grooves (14) is 14-16 mm.
9. The motor structure of claim 1, wherein: the width size of the stator yoke (22) is 5mm, and the size ratio of the width of the tooth wide part (23) to the width of the stator yoke (22) is 1.2-2.
10. The motor structure of claim 1, wherein: the angle of the tooth shoe angle (24) is between 125 and 130 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921173712.8U CN210041473U (en) | 2019-07-25 | 2019-07-25 | Motor structure applied to brushless dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921173712.8U CN210041473U (en) | 2019-07-25 | 2019-07-25 | Motor structure applied to brushless dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210041473U true CN210041473U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921173712.8U Active CN210041473U (en) | 2019-07-25 | 2019-07-25 | Motor structure applied to brushless dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210041473U (en) |
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2019
- 2019-07-25 CN CN201921173712.8U patent/CN210041473U/en active Active
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