CN2245823Y

CN2245823Y - Symmetric double-stator permanent-magnetic alternator

Info

Publication number: CN2245823Y
Application number: CN 95238031
Authority: CN
Inventors: 王方
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-11-14
Filing date: 1995-11-14
Publication date: 1997-01-22
Anticipated expiration: 2005-11-14

Abstract

The utility model discloses a motor, particularly a permanent magneticic AC generator with two symmetric stators. The utility model is proposed aiming at the defect of existing permanent magneticic AC generators whose end surfaces have air space. The utility model is characterized in that two symmetric stators are arranged on the two axial sides of a rotor symmetrically; the utility model has reasonable magnetic circuit layout; a support of one end and one bearing is changed into a support of two ends and two bearings. The utility model can run smoothly. The power and the efficiency of the utility model are increased by one time compared with generators with one stator. The failure rate of the utility model is reduced. The utility model is used for vehicles for agricultural use, automobiles, and other vehicles.

Description

Symmetric double stator permanent magnet alternating current generator

The utility model relates to a kind of motor.Particularly a kind of magneto alternator that two stators of a rotor are arranged.

At present, the end face air gap permanent magnet alternating current generator that uses on the agricultural vehicle, when low vehicle speeds or idling, voltage is low, and electricity shortage can not reach rated power; When high vehicle speeds, voltage is too high, often damages power consumption equipment; Daytime, generator was in the no-load running state basically when travelling, and produced very high floating voltage, often the winding punch through damage of generator; When rotating speed sudden change or circuit switched fast, generator also can produce very high voltage because of self-induction action, punctures winding or damages power consumption equipment; Structurally, the rotor of this generator is positioned at a side of stator, and rotor is by an end of a bearing bolster, and during operation, end face run-out is very serious.In addition, rotating speed very high again (5000 rev/mins), bearing are easy to damage; The magnetic Circuit Design of this generator is also unreasonable, an end face air gap is only arranged, thereby efficient is low, can not send due power.

At above-mentioned defective, the purpose of this utility model is that a kind of suitable novel permanent magnetic alternating current generator is provided.

The utility model is realized by following proposal: a kind of symmetric double stator permanent magnet alternating current generator, comprise rotor, stator, rotating shaft, housing, belt pulley, it has the stator 19 of two symmetries, stator 19 is made of with the cylinder-shaped iron core 13 parallel with rotating shaft 3 that circumferentially evenly is provided with along it two stator cases 2, be wound with coil 14, two stators 19 on the iron core 13 and be symmetricly set on the axial both sides of rotor 18; Its rotor 18 constitutes by rotor disk 7 with along its cylindrical permanent magnet 8 that equates with stator core 13 quantity that circumferentially evenly is provided with, the pole orientation of permanent magnet 8 is arranged at interval, parallel with rotating shaft 3, its diameter is greater than the diameter of stator core 13, rotor 18 usefulness flat keys 4 are fixed in the rotating shaft 3, rotating shaft 3 is by 1 supporting of the bearing on the stator case 2 on rotor 18 both sides, between bearing 1 and two stator cases 2 packing ring 17 is arranged, one end of rotating shaft 3 stretches out outside the stator case 2, with flat key 16 belt pulley 15 is fixed in the rotating shaft 3; Two stator cases 2 and rotor therebetween 18, the porose fixedly ear 20 that circumferentially evenly is provided with along its outer on iron 5, sleeve 6 and the both sides stator case 2 of sealing by annular is assembled together with bolt 9, nut 10 and plain cushion 11, spring washer 12.It is built-in or outward with the magneto alternator voltage regulation adjustor.It is built-in or outward with rectifying device.

The utlity model has following advantage: 1. its running is steady, and bearing life prolongs, and failure rate is low; 2. the more single stator single end face of its power and efficient air gap generator doubles; 3. in design with make and rated power can be selected in minimum speed, overcoming the shortcoming of electricity shortage under vehicle low speed and the idling mode, thereby can guarantee full power to generate electricity from low speed to high speed; On generator built-in or outside the attached magneto alternator voltage regulation adjustor of having applied for another patent, the winding self-induction high potential under high voltage in the time of can suppressing to run at high speed and the various running status is guaranteed the safety of power consumption equipment and generator self; 5. because symmetrically arranged two stators are arranged, the conversion mode of connection simply just can change rated output voltage easily, to adapt to different needs; 6. this generator can also built-in or outer attached rectifying device, output direct current, steam supply car and the use of other vehicles.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

Among the figure, the stator 19 of two symmetries is symmetricly set on the axial both sides of rotor 18.The stator case 2 of two stators 19 each 6 cylinder-shaped iron cores 13 parallel with rotating shaft 3 circumferentially evenly are set, on the iron core 13, vertical its axial coiling 14, in the present embodiment, the iron core of employing φ 16.On rotor 18, along its rotor disk 7 six cylindrical permanent magnets 8 parallel with rotating shaft 3 are set evenly circumferentially, its pole orientation arranges at interval, its diameter is greater than the diameter of iron core 13, in the present embodiment, the permanent magnet of employing φ 24.Rotor 18 is fixed in the rotating shaft 3 by flat key 4.Rotating shaft 3 respectively is provided with 1 supporting of a bearing by the end of the stator case 2 of two stators 19, lays packing ring 17 between stator case 2 and bearing 1, and an end of rotating shaft 3 stretches out outside the stator case 2, with flat key 16 belt pulley 15 is fixed in the rotating shaft 3.Circumferential third-class office is provided with each three fixedly ears 20 to two stator cases 2 along its outer, and is fixedly porose on the ear 20.The stator case 2 of two stators 19 and rotor therebetween 18 are linked in together by sealing iron hoop 5, by the fixedly ear 20 on sleeve 6 and two stator cases 2, tighten together with bolt 9, nut 10 and plain cushion 11, spring washer 12 again.When rotor 18 rotated, the iron core 13 that the permanent magnet 8 on the rotor 18 is inswept successively to be wound with coil 14 was with phase property.Since the diameter of permanent magnet 8 greater than the diameter of iron core 13, be wound with coil 14 iron core 13 none leaked by permanent magnet, the magnetic flux in the coil 14 is changed.Simultaneously, being wound with the iron core 13 of coil 14 and the permanent magnet 8 on the rotor 18 on the stator 19, all be regular circumferential distribution, and rotor 18 is uniform rotation under stable state, so the variation of magnetic flux also is periodic.Thereby, in coil 14, produce periodic induced electromotive force.If then just there is current flowing in the closed loop that forms of coil and load in load, realized the purpose of generating.Because the stator 19 that the utlity model has two symmetries is symmetricly set on the axial both sides of rotor 18, thereby, two end face air gaps between the stator 19 of rotor 18 and two symmetries, just formed.In addition, magnetic circuit is rationally distributed, thus its power and efficient all the single end face air gap generator of more single stator double.Rotating shaft 3 is held supporting by original single-ended single shaft, changes 1 supporting of two ends duplex bearing into, and running is just more steady like this, and the voltage of output also can be more stable, and the circular runout of rotating shaft 3 also reduces thereupon, and prolonged the useful life of bearing, and failure rate is also with corresponding reduction.During design, rated power is selected in stable minimum speed, no matter just can guarantee can both the full power generating when low speed or high-speed cruising state.On the utility model built-in or outside the attached magneto alternator voltage regulation adjustor of having applied for another patent, just can guarantee the safety of power consumption equipment and generator self.Built-in or outer attached rectifying device on the utility model also can obtain direct current output, but thereby steam supply car and the use of other vehicles.Change its mode of connection, can also change its output voltage, use more flexible.

Claims

1. symmetric double stator permanent magnet alternating current generator, comprise rotor, stator, rotating shaft, housing, belt pulley, it is characterized in that: it has the stator [19] of two symmetries, stator [19] is by two stator cases [2] and cylinder-shaped iron core [13] formation parallel with rotating shaft [3] that circumferentially evenly is provided with along it, be wound with coil [14] on the iron core [13], two stators [19] are symmetricly set on the axial both sides of rotor [18]; Its rotor [18] constitutes by rotor disk [7] with along its cylindrical permanent magnet [8] that equates with stator core [13] quantity of circumferentially evenly establishing 1, the pole orientation of permanent magnet [8] is arranged at interval, parallel with rotating shaft [3], its diameter is greater than the diameter of stator core [13], and rotor [18] is fixed in the rotating shaft [3] with flat key [4]; Rotating shaft [3] has packing ring [17] by the supporting of the bearing [1] on the stator case [2] on rotor [18] both sides between bearing [1] and two stator cases [2], and an end of rotating shaft [3] stretches out outside the stator case [2], with flat key [16] belt pulley [15] is fixed in the rotating shaft [3]; Two stator cases [2] and its rotor of asking [18], outside it, continue to use porose fixedly ear [20] by sealing of annular on iron [5], sleeve [6] and the both sides stator case [2], be assembled together with bolt [9], nut [10] and plain cushion [11], spring washer [12] to even setting.

2. generator according to claim 1 is characterized in that: it is built-in or outward with the magneto alternator voltage regulation adjustor.

3. generator according to claim 1 is characterized in that: it is built-in or outward with rectifying device.