CN1357958A

CN1357958A - Twin-induction surface motor

Info

Publication number: CN1357958A
Application number: CN 00134694
Authority: CN
Inventors: 尹佐国; 洪银树
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2000-12-06
Filing date: 2000-12-06
Publication date: 2002-07-10
Anticipated expiration: 2020-12-06
Also published as: CN1133262C

Abstract

The twin-induction surface motor has great torque, smooth rotation and simple structure and consists of stator, rotor and central shaft, the stator includes base board with shaft hole, incluction element st on the base board and winding set around the shaft hole in equal intervals; the rotor includes upper and lower rotor units on the upper and lower sides of the base board separately and with permanent magnets corresponding to the windings on the base board; and the central shaft is set in the shaft hole on the based board and connected to the rotor fixedly.

Description

Twin-induction surface motor

The invention belongs to motor, particularly a kind of twin-induction surface motor.

As shown in Figure 1, known axial gap brushless motor comprises the holder 91 that is provided with axle sleeve 911, is sheathed on the outer circuit substrate 92 of axle sleeve 911, pole piece 93, all is located at several coils 94 on the pole piece 93 and be provided with the rotor 95 of central shaft 951.Rotor 95 inwall rings are established permanent magnet 952.

Because the permanent magnet 952 of rotor 95 is corresponding to a side of number coil 94, when number coil 94 imports electric current, coil 94 produces magnetic fields with pole piece 93, and the magnetic field of the permanent magnet of establishing by this magnetic field and rotor 95 inwall rings 952 repels each other, to drive rotor 95 rotations.

This known axial gap brushless motor, its coil 94 are simultaneously in the upper and lower side generation magnetic field of coil 94 when galvanization, but in the running, only utilize the magnetic field of upside one side to promote rotor 95 rotations, and the magnetic field of downside one side is not used, so rotary torsion can't improve.In addition, have magnetic torsion (cogging torque) between the permanent magnet 952 of rotor 95 and the pole piece 93, therefore, when motor rotates rotor 95 because of the magnetic torsion between permanent magnet 952 and the pole piece 93 (cogging torque), thereby cause the motor rotation time can produce flutter phenomenon.

The purpose of this invention is to provide the twin-induction surface motor that a kind of turning moment is big, running is smooth-going, simple in structure.

The present invention includes stator, rotor and central shaft; Stator comprises the substrate that is provided with axis hole, be arranged at the sensing element on the substrate and uniformly-spaced be arranged at several coils around the axis hole; Rotor comprises the upper and lower rotor that is combined into one and lays respectively at the upper and lower side of substrate, be respectively equipped with on it with substrate on the corresponding permanent magnet of coil; Central shaft is hubbed on the substrate axis hole and with rotor fixedlys connected.

Wherein:

Uniformly-spaced all establish the breach of the ccontaining coil of number on the substrate on every side around axis hole.

One of upper and lower rotor is provided with the centre mount of closely pegging graft for central shaft.

Axis hole on the substrate is arranged on the axle bed that substrate center extends.

One of one end of central shaft and upper and lower rotor are one-body molded.

All be provided with the centre mount of pegging graft in the upper and lower commentaries on classics with the central shaft two ends.

One of upper and lower rotor is provided with flabellum.

Be respectively equipped with blowing-type flabellum and axial-flow type flabellum on the upper and lower rotor.

Be arranged at that sensing element is arranged at position, breach angle to be positioned at position, coil angle on the substrate.

Substrate is provided with starting element.

Owing to the present invention includes stator, rotor and central shaft; Stator comprises the substrate that is provided with axis hole, be arranged at the sensing element on the substrate and uniformly-spaced be arranged at several coils around the axis hole; Rotor comprises the upper and lower rotor that is combined into one and lays respectively at the upper and lower side of substrate, be respectively equipped with on it with substrate on the corresponding permanent magnet of coil; Central shaft is hubbed on the substrate axis hole and with rotor fixedlys connected.During running, by on the upper and lower rotor that is arranged at the upper and lower side of stator substrate with substrate on the corresponding permanent magnet of coil, when coil feeds electric current, produce the induced field that repels each other with the magnetic field of permanent magnet formation, with the torsional moment that upper and lower rotor is provided bigger driving rotate; Because of pole piece is not set, therefore can not produce magnetic torsion, therefore upper and lower rotor can smooth and easyly rotate reposefully; Not only turning moment is big, and it is smooth-going, simple in structure to turn round, thereby reaches purpose of the present invention.

Fig. 1, axial gap brushless motor decomposition texture schematic isometric for commonly using.

Fig. 2, be the embodiment of the invention one decomposition texture schematic isometric.

Fig. 3, be the embodiment of the invention one structural representation vertical view.

Fig. 4, be A-A cutaway view among Fig. 3.

Fig. 5, be the embodiment of the invention two decomposition texture schematic isometric.

Fig. 6, be the embodiment of the invention two structural representation vertical views.

Fig. 7, be B-B cutaway view among Fig. 6.

Fig. 8, for user mode cutaway view of the present invention.

Below in conjunction with accompanying drawing the present invention is further elaborated.

Embodiment one

As shown in Figure 2, the present invention includes stator 1, rotor 2 and central shaft 3.

Stator 1 comprises substrate 10 and the number coil of being made by non-magnet material 13.Substrate 10 is provided with the axis hole 11 of fixed installation bearing 31, around uniformly-spaced all establishing several breach 12 around the axis hole 11 and being positioned at the location hole 17 of side.Breach 12 bottom surfaces are provided with the thin spacer 16 of the tool cementability that non-ferromagnetic metal material makes, and thin spacer 16 is preferably the scraps of paper.Substrate 10 is provided with refoulement road, sensing element 14 and the starting element 15 that is made of necessary electronic component.Sensing element 14 can be known hall sensing element (Hall sensor).Sensing element 14 is arranged at that sensing element 14 preferably is arranged at 12 jiaos of positions of breach on the substrate 10, so that can be brought into play best detecting effect.

Coil 13 is placed in the breach 12 of substrate 10, and puts and to be positioned on the thin spacer 16, with uniformly-spaced around being positioned around the axis hole 11.

Rotor 2 comprises upper and lower rotor 20a, the 20b that is combined into one and is arranged at stator 1 substrate 10 upper and lowers respectively, is respectively equipped with

centre mount

20a, 20b and annular

permanent magnnet

21a, 21b on it.The induced field that the magnetic field of the last permanent magnet 21a of upper and

lower rotor

20a, 20b, 20b and the stator of corresponding input current 1 coil 13 produce is tied to form and repels each other, and rotates synchronously to impel upper and

lower rotor

20a, 20b.

Central shaft 3 one end surfaces are provided with straight trough etc. and establish the annular groove 32 of fastener components 33 such as C shape ring to constitute matsurface 30 and card.

As shown in Figure 3, Figure 4, central shaft 3 is hubbed on the substrate 10 by the bearing 31 that is fixedly installed in substrate 10 axis holes 11, and upper and

lower rotor

20a, 20b are fixedly set in central shaft 3 two ends respectively to be combined into one with

centre mount

22a, 22b on it; Also can make the centre mount 22a (22b) of central shaft 3 one ends and last (or down) rotor 20a (20b) one-body molded, it constitutes matsurface 30 1 ends and is plugged on down on the centre mount 22a (22b) of (or on) rotor 20a (20b) in the mode of combining closely, so that have the effect that combines of the best between central shaft 3 and the centre mount 22a (22b).After central shaft 3 is plugged on down the centre mount 22a (22b) of (or on) rotor 20a (20b), only unlikelyly deviate from by fastener components such as C shape ring 33 cards that are arranged in central shaft 3 annular grooves 32, so that upper and

lower rotor

20a, 20b are arranged at substrate 10 upper and lower sides,

permanent magnet

21a, 21b are corresponding with number coil 13 on the substrate 10 on it.When coil 13 feeds electric current generation induced field, the magnetic field of the last permanent magnet 21a of upper and

lower rotor

20a, 20b, 20b and the induced field that coil 13 is produced repel each other, therefore can provide bigger rotary torsion to rotor 2, and provide deflection strength by starting element 15, impel upper and

lower rotor

20a, 20b to rotate synchronously.

Use the change in polarity of the last permanent magnet 21a of sensing element 14 detecting upper and

lower rotor

20a, 20b, 20b magnetic pole, make the electric current of coil 13 produce alternation, to drive rotor 2 rotations with the controlling and driving loop; And when the present invention starts, rotor 2 is provided the strength of deflection by starting element 15, start to help the present invention.

The present invention is fixedly installed in the appropriate location by the setting elements such as bolt that are arranged in the stator 1 substrate 10 side location holes 17.

As shown in Figure 8, also can be respectively equipped with axial-flow type flabellum 23a and blowing-type flabellum 23b in upper and

lower rotor

20a, 20b periphery, with make upper and lower rotor 20a, when 20b rotates synchronously, by axial-flow type flabellum 23a and blowing-type flabellum 23b disturbance air to produce best gas flow effect.

Embodiment two

As shown in Figure 5, the present invention includes stator 4, rotor 5 and central shaft 6.

Stator 4 comprises substrate 40 and the number coil of being made by non-magnet material 43.Substrate 40 centers extend the axle bed 41 of the axis hole 411 with fixed installation bearing 61 and uniformly-spaced all establish several breach 42 on every side around axis hole 411; Breach 42 bottom surfaces are provided with the thin spacer 46 of the tool cementability that non-ferromagnetic metal material makes, and thin spacer 46 is preferably the scraps of paper; Substrate 40 is provided with refoulement road, sensing element 44 and the starting element 45 that is made of necessary electronic component.Sensing element 44 can be known hall sensing element (Hall sensor).

Coil 43 is placed in the breach 42 of substrate 40, and puts and to be positioned on the thin spacer 46, with uniformly-spaced around being positioned around the axis hole 411.

Sensing element 44 is arranged at that sensing element 44 preferably is arranged at 42 jiaos of positions of breach on the substrate 40, so that can be brought into play best detecting effect.

Rotor 5 comprises upper and lower rotor 50a, the 50b that is arranged at stator 4 substrates, 40 upper and lowers respectively and is combined into one, and upper rotor part 50a is provided with centre mount 52a and annular permanent magnnet 51a, and its periphery is provided with flabellum 53a; Lower rotor part 50b is provided with through hole 52b and the annular permanent magnnet 51b greater than axle bed 41 external diameters on the substrate 40.Lower rotor part 50b and upper rotor part 50a are combined into one with various combinations such as bonding.The induced field that the magnetic field of upper and

lower rotor

50a, 50b

permanent magnet

51a, 51b and the stator of corresponding input current 4 coils 43 produce is tied to form and repels each other, and rotates synchronously to impel upper and

lower rotor

50a, 50b.

Central shaft 6 is provided with the annular groove 62 that card is established fastener components 63 such as C shape ring.

Use the change in polarity of sensing element 44 detecting upper and

lower rotor

50a, 50b

permanent magnet

51a, 51b magnetic pole, make the electric current of coil 43 produce alternation, to drive rotor 5 rotations with the controlling and driving loop; And when the present invention starts, rotor 5 is provided the strength of deflection by starting element 45, start to help the present invention.

As Fig. 6, shown in Figure 7, central shaft 6 one ends fixedly are plugged in or are shaped on the upper rotor part 50a centre mount 52a, be hubbed on the substrate 40 by the bearings 61 that are fixedly installed in substrate 40 axis holes 411, and only unlikelyly deviate from by fastener components such as C shape ring 63 cards that are arranged in central shaft 6 annular grooves 62; Lower rotor part 50b and upper rotor part 50a are combined into one, and are arranged at substrate 40 upper and lower sides to make upper and

lower rotor

50a, 50b, and

permanent magnet

51a, 51b are corresponding with number coil 43 on the substrate 40 on it.When coil 43 feeds electric current generation induced field, on, lower rotor part 50a, the last permanent magnet 51a of 50b, the induced field that the magnetic field of 51b and coil 43 are produced repels each other, therefore can provide bigger rotary torsion to rotor 5, and provide deflection strength by starting element 45, on impelling,

lower rotor part

50a, 50b rotates synchronously, and by in sensing element 44 detectings,

lower rotor part

50a, 50b permanent magnet 51a, the change in polarity of 51b, with the controlling and driving loop, impel the electric current of coil 43 to produce alternation, with provide be combined into one on,

lower rotor part

50a, 50b continues rotation; And produce the gas flow of forcing by the flabellum 53a disturbance air of upper rotor part 50a periphery.

In sum, the present invention has following effect:

By corresponding with coil on the substrate permanent on the upper and lower rotor that is arranged at the upper and lower side of stator substrate Magnet when coil passes into electric current, produces the induced field that repels each other with the magnetic field of permanent magnet formation, with right The torsional moment that upper and lower rotor provides bigger driving to rotate. And the present invention is not because arranging pole piece, because of This can not produce magnetic torsion, and therefore upper and lower rotor can smooth and easy reposefully rotation.

Claims

1, a kind of twin-induction surface motor, it comprises stator, rotor and central shaft; It is characterized in that described stator comprises the substrate that is provided with axis hole, is arranged at the sensing element on the substrate and uniformly-spaced is arranged at several coils around the axis hole; Rotor comprises the upper and lower rotor that is combined into one and lays respectively at the upper and lower side of substrate, be respectively equipped with on it with substrate on the corresponding permanent magnet of coil; Central shaft is hubbed on the substrate axis hole and with rotor fixedlys connected.

2, twin-induction surface motor according to claim 1 is characterized in that on the described substrate around the breach of uniformly-spaced all establishing the ccontaining coil of number around the axis hole.

3, twin-induction surface motor according to claim 1 is characterized in that one of described upper and lower rotor is provided with the centre mount of closely pegging graft for central shaft.

4, twin-induction surface motor according to claim 1 is characterized in that the axis hole on the described substrate is arranged on the axle bed that substrate center extends.

5, twin-induction surface motor according to claim 1 is characterized in that one of an end of described central shaft and upper and lower rotor are one-body molded.

6, twin-induction surface motor according to claim 1 is characterized in that all being provided with in the described upper and lower commentaries on classics centre mount of pegging graft with the central shaft two ends.

7, twin-induction surface motor according to claim 1 is characterized in that one of described upper and lower rotor is provided with flabellum.

8, twin-induction surface motor according to claim 1 is characterized in that being respectively equipped with on the described upper and lower rotor blowing-type flabellum and axial-flow type flabellum.

9, twin-induction surface motor according to claim 1 is characterized in that describedly being arranged at that sensing element is arranged at position, breach angle to be positioned at position, coil angle on the substrate.

10, twin-induction surface motor according to claim 1 is characterized in that described substrate is provided with starting element.