CN2394371Y

CN2394371Y - Fan motor

Info

Publication number: CN2394371Y
Application number: CN 99248063
Authority: CN
Inventors: 洪银树
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 1999-09-29
Filing date: 1999-09-29
Publication date: 2000-08-30
Anticipated expiration: 2009-09-29

Abstract

The utility model relates to a fan motor, which is composed of a rotor, a stator, a sensing element, a driving circuit, a conversion circuit, etc., wherein, the conversion circuit is provided with power supply connection terminals which is used for connecting an alternating current power supply; the alternating current power supply can be rectified and stepped down by the conversion circuit, and then, the alternating current power supply is connected with the driving circuit, current with positive and negative poles is alternatively output, coils of the stator is prompted to form forward and reverse current which is mutually switched on, the alternating magnetic field is produced, and the rotor is inducted and rotated.

Description

Fan motor

The utility model relates to a kind of motor, refers to a kind of fan motor that uses common AC power especially.

General fan, all be to be used for driving air to produce air-flow, use for heat radiation, ventilation, and general home environment or life occasion provide AC power mostly and use to electrical appliance, therefore general fan motor commonly used all discloses as No. 312390 " fan motor improvement " patent case at Taiwan patent gazette bulletin, this fan motor is by wearing the stator that coiling forms on the outer sheathed silicon steel sheet of rotor rotating disk, and the shell that the axostylus axostyle two ends of rotor can sheathed pivot joint two correspondences.In addition, two shells can be solid with the silicon steel sheet spiral shell, and axostylus axostyle is arranged with packing ring between rotating disk front side and shell.

What this patent case was disclosed is the fan motor that generally uses AC power, being configured in the manufacturing of its motor comparatively bothers, especially stator and on coil twine quite time-consuming especially, and volume is bigger, therefore, the fan motor of the general AC power of using is all not too easy in making, assembling now, and cost of manufacture is also higher.

Main purpose of the present utility model provides a kind of fan motor, and it can use the AC power that generally is available anywhere, and the motor volume is less, and it is made simply, assembles easily.

In order to achieve the above object, the utility model provides a kind of fan motor, at least comprise rotor, stator, it is characterized in that: the utmost point that it also comprises central siphon, can detect rotor permanent magnet becomes and the sensing element of output pulse signal, can form drive circuit, conversion loop that alternating magnetic field makes the rotor rotation; Wherein said rotor is provided with annular permanent magnnet, and permanent magnet includes one group of above N, S utmost point; Described stator is established pole piece and is wound with coil, and central authorities establish the hole, and the external diameter of central siphon is set in the hole of stator; The internal diameter of this central siphon is provided with bearing, and rotor is articulated in bearing in the central siphon with axostylus axostyle; The output of this drive circuit is connected to the coil of stator; The power end in this conversion loop connects AC power, and output directly is connected to drive circuit.

One end of the axostylus axostyle of described rotor is provided with the annular groove that fastens the location for buckling element, and rotor is articulated in bearing in the central siphon with axostylus axostyle.The axostylus axostyle of described rotor is not established the other end of annular groove can be in conjunction with an impeller that can rotate with rotor rotation.Itself can be provided with the blade that can form impeller described rotor.Described stator can have more than two series connection be sheathed on the central siphon external diameter.Described sensing element can have more than one.

Described drive circuit can design makes an IC wafer.Described conversion loop can be designed and make an IC wafer.Described drive circuit can design with the conversion loop and make an IC wafer.Described drive circuit and sensing element can be with being located on the circuit board.Described conversion loop can be located on the shell block or plate of a fan motor.Described drive circuit, sensing element and conversion loop can be with being located on the fixed head.

Effect of the present utility model is: this fan motor, and its AC power that is available anywhere of can pegging graft is used, and its making is simple, assembling is easy, and the more existing fan motor of cost is low, and with respect to existing fan motor, it has less motor volume.

Fig. 1 is the first embodiment three-dimensional exploded view of the present utility model.

Fig. 2 is a combination section of the present utility model.

Fig. 3 is a circuit block diagram of the present utility model.

Fig. 4 is a circuit diagram of the present utility model.

Fig. 5 is the second embodiment three-dimensional exploded view of the present utility model.

Fig. 6 is the 3rd an embodiment combination section of the present utility model.

First preferred embodiment of the utility model fan motor as shown in Figure 1, it includes members such as rotor 1, stator 2, central siphon 3, drive circuit board 4, fixed head 5.

Rotor 1 is provided with the permanent magnet 11 of annular, this permanent magnet has one group of above N, S utmost point, and be surrounded on stator 2 around with stator 2 relative inductions, rotor 1 is established axostylus axostyle 12 and is articulated on the bearing 31 in the central siphon 3, rotor 1 itself can be established flabellum and become an impeller, or with axostylus axostyle 12 1 ends in conjunction with impeller, axostylus axostyle 12 other ends are provided with annular groove 13 can fasten the location for buckling element 6.

Stator 2 is established 21 groups of pole pieces, is wound with coil 22 on the pole of this pole piece 21, and stator 2 central authorities establish hole 23, hole 23 can wear for central siphon 3, formation combines with rotor 1, and the coil 22 of stator 2 is connected in drive circuit set on the drive circuit board 4, and is subjected to the control of drive circuit.

The external diameter of central siphon 3 is set in the hole 23 of stator 2, the hole 41 of drive circuit board 4, and be incorporated in the post hole 51 of fixed head 5, the ccontaining bearing 31 of central siphon 3 internal diameters, this bearing 31 articulates for the axostylus axostyle 12 of rotor 1, and central siphon 3 can be directly integrally formed by the post hole 51 of fixed head 5 in case of necessity.

The central authorities of drive circuit board 4 establish hole 41 for central siphon 3 assemblings, establish necessary electronic element 42 on it to constitute one drive circuit, on drive circuit board 4, be provided with a sensing element 43 in addition, this sensing element 43 can be detected the polarity of rotor 1 permanent magnet 11, and output pulse signal is so that drive circuit 42 has the mutual electric current output of positive-negative polarity, for the coil 22 of giving stator 2, form an alternating magnetic field and drive rotor 1 rotation.

Fixed head 5 is established post hole 51 for central siphon 3 combinations, can be provided with necessary electronic element 52 on the fixed head 5 to constitute a conversion loop, this fixed head 5 is provided with power line 53, this power line 53 is the input in conversion loop, it can connect common household AC power, and the output in conversion loop is connected to the drive circuit on the drive circuit board 4.

See also shown in Figure 2, it is the constitutional diagram of the utility model first embodiment, it wears stator 2 with the external diameter of central siphon 3, drive circuit board 4 is incorporated on the fixed head 5, the internal diameter of central siphon 3 is established axostylus axostyle 12 pivot joints of bearing 31 for rotor 1, and be buckled in 13 of the annular grooves of axostylus axostyle 12 with a buckling element 6, make rotor 1 and stator 2 articulate the location, and the permanent magnet 11 that forms rotor 1 is located on around the stator 2, so that rotor 1 can be with respect to 2 one-tenth induction rotations of stator, in addition can be in conjunction with impeller 14 at axostylus axostyle 12 1 ends, impeller 14 is rotated with rotor 1, also can itself establish blade in case of necessity and form impeller at rotor 1.

See also shown in Fig. 3,4, it is circuit block diagram of the present utility model and circuit diagram again, and circuit of the present utility model consists predominantly of conversion loop 54, one drive circuit 44 and a sensing element 43.

Conversion loop 54 is with power end 541 grafting AC power, this AC power is done all-wave or halfwave rectifier through conversion loop 54, again through a voltage stabilizing circuit 542 output DC sources (this magnitude of voltage can optionally be done selection), this DC power supply can connect drive circuit 44, make drive circuit 44 cooperate the 43 pairs of motor coils 22 of sensing element that to detect rotor 1 change in polarity that the mutual conducting electric current of positive-negative polarity is provided, make rotor 1 rotation to form an alternating magnetic field.

In addition, conversion of the present utility model loop 54 and drive circuit 44 can be individually or are made an IC wafer together, and the volume of whole fan motor is more dwindled, and also more easy to be simple in assembly.

See also shown in Figure 5, it is the utility model second preferred embodiment, it is different from the first embodiment place and mainly is stator 7, and the element that has lacked drive circuit board 4, can find out obviously that by figure the stator 7 of present embodiment still has pole piece 71 and is wound with coil 72, but its coil 72 is that the axial winding of single group is last around mode, 71 of lower magnetic pole sheets, the stator 2 that is different from first embodiment, its coil 22 is radially to be set around respectively on the pole of pole piece 21, therefore the stator of present embodiment is more convenient easy on making, also have present embodiment that drive circuit board 4 elements are omitted, and directly drive circuit 44 is located on the fixed head 5, and this fixed head 5 can be integral with fan case seat.

See also shown in Figure 6, it is the 3rd embodiment of the present utility model, when fan motor needs bigger output torque, the utility model can be as shown in Figure 6, merge the more than one sense element senses of cooperation with more than one stator 7 for central siphon 3 tandem junctions and drive, formation can have the fan motor of bigger output torque.

The utility model can do not deviate from the core theme and the situation of feature under implement with other different form.Therefore, above-mentioned preferred embodiment is just enumerated by way of example, is not used for limiting the utility model.

Claims

1, a kind of fan motor comprises rotor, stator at least, it is characterized in that: the utmost point that it also comprises central siphon, can detect rotor permanent magnet becomes and the sensing element of output pulse signal, can form drive circuit, conversion loop that alternating magnetic field makes the rotor rotation; Wherein said rotor is provided with annular permanent magnnet, and permanent magnet includes one group of above N, S utmost point; Described stator is established pole piece and is wound with coil, and central authorities establish the hole, and the external diameter of central siphon is set in the hole of stator; The internal diameter of this central siphon is provided with bearing, and rotor is articulated in bearing in the central siphon with axostylus axostyle; The output of this drive circuit is connected to the coil of stator; The power end in this conversion loop connects AC power, and output directly is connected to drive circuit.

2, fan motor according to claim 1 is characterized in that: an end of the axostylus axostyle of described rotor is provided with the annular groove that fastens the location for buckling element, and rotor is articulated in bearing in the central siphon with axostylus axostyle.

3, fan motor according to claim 2 is characterized in that: the axostylus axostyle of described rotor is not established the other end of annular groove can be in conjunction with an impeller that can rotate with rotor rotation.

4, fan motor according to claim 1 is characterized in that: itself can be provided with the blade that can form impeller described rotor.

5, fan motor according to claim 1 is characterized in that: described stator can have more than two series connection be sheathed on the central siphon external diameter.

6, fan motor according to claim 5 is characterized in that: described sensing element can have more than one.

7, fan motor according to claim 1 is characterized in that: described drive circuit can design makes an IC wafer.

8, fan motor according to claim 1 is characterized in that: described conversion loop can be designed and make an IC wafer.

9, fan motor according to claim 1 is characterized in that: described drive circuit can design with the conversion loop and make an IC wafer.

10, fan motor according to claim 1 is characterized in that: described drive circuit and sensing element can be with being located on the circuit board.

11, fan motor according to claim 11 is characterized in that: described conversion loop can be located on the shell block or plate of a fan motor.

12, fan motor according to claim 1 is characterized in that: described drive circuit, sensing element and conversion loop can be with being located on the fixed head.