CN201059273Y

CN201059273Y - Single-stator external electrode type dual fan

Info

Publication number: CN201059273Y
Application number: CNU2007201527525U
Authority: CN
Inventors: 陈建荣; 郑瑞鸿; 刘贤文; 林信宏; 徐俊祺
Original assignee: Yen Sun Technology Corp
Current assignee: Yen Sun Technology Corp
Priority date: 2007-06-18
Filing date: 2007-06-18
Publication date: 2008-05-14
Anticipated expiration: 2017-06-18

Abstract

A single-stator external electrode type dual fan comprises a base, two fan wheel units adjacently arranged on the base, as well as a driving unit positioned between two fan wheel units. The utility model mainly utilizes the driving unit to be provided with a single stator between two fan wheel units, wherein, a single coil is wound on the stator; the stator extends outwards and is provided with four terminal posts respectively positioned on two sides; four terminal posts are led to produce magnetism by means of electrifying excitation, so as to promote two fan wheel units to rotate through magnetic mutually expulsive force. On one hand, as the utility model only needs to be provided with the single stator, the material and manufacturing cost of the stator can be effectively reduced; on the other hand, the utility model can also simplify the configuring operation of the whole circuit, reduces manufacturing cost, prevents the stator from occupying excessive space, and reduces the whole width.

Description

The dual fan of single stator external pole type

[technical field]

The utility model relates to a kind of external pole type fan, particularly relates to the dual fan of a kind of single stator external pole type.

[background technique]

Consult Fig. 1, existing external pole type fan 1 comprise a shell block 11, two and adjacent impeller unit 12, that are arranged in this shell block 11 be arranged on this shell block 11 and can control the circuit board 13 that this two impellers unit 12 starts simultaneously, and on the shell block 11 that is arranged between this two impellers unit 12 and can order about this two impellers unit 12 and produce rotational stator unit 14.

Consult Fig. 1,2 in the lump, each impeller unit 12 all has a wheel hub 121, one rotatingshaft 122 that combines with this wheel hub 121, several pieces are arranged at intervals at the flabellum 123 on these wheel hub 121 side faces radially, and a magnet ring 124 that is located on each flabellum 123 external end edge.

14 of this stator units have one first stator 141, and one second stator 142, these first stator, 141 one have extended to form two poles 143, and utilize an inductor coil 145 that this two pole 143 is twined continuously, this second stator 142 equally also is that one has extended to form two poles 144, utilize another inductor coil 146 that this two pole 144 is twined continuously again, and above-mentioned two inductor coils 145,146 all are to be electrically connected on this circuit board 13.

By this first, two stators 141, each pole 143 of 142, the 144th, respectively with two inductor coils 145,146 twine continuously, and this is first years old, two stators 141, the same side pole 143 of 142,144 pole-face is a magnet ring 124 of facing flabellum 123 external end edges of this two impellers unit 12 accordingly, therefore after these circuit board 13 energisings, above-mentioned two inductor coils 145,146 just can produce energization excitation, and make each pole 143,144 all produce magnetic, and then produce the Magnetic Induction mutual exclusions, and then drive this two impellers unit 12 and produce rotation with the magnet ring 124 of this two impellers unit 12.

Yet, this external pole type fan 1 still has needs further improvement part, for example: this external pole type fan 1 must possess this first and second stator 141,142 simultaneously, could produce start, can't only utilize single stator to be driven, therefore, for certainly will related raising on the material of stator and the manufacture cost.Moreover these first and second stator 141,142 distances are far away, and must twine two interconnected inductor coils 145,146 respectively, therefore, can increase coil entire length and cost of material, the related comparatively complexity of integrated circuit configuration that also can make.In addition, this first and second stator the 141, the 142nd is arranged at the outside of this two impellers unit 12 with symmetric mode, and therefore, the overall space width is to exceed with first and second stator 141,142 outer rims, seems comparatively huge, takies more space.

[model utility content]

The purpose of this utility model is to provide a kind of single stator external pole type dual fan, has material and manufacture cost and all can effectively reduce, simplify integrated circuit configuration operation, dwindle advantage such as integral width.

For achieving the above object, the utility model provides a kind of single stator external pole type dual fan, comprises a pedestal, two and the adjacent impeller unit that is arranged on this pedestal, and a driver element between this two impellers unit,

Each impeller unit all has a wheel hub that is arranged at rotationally on this pedestal, several pieces are located on the flabellum on this wheel hub side face, an and magnet ring that is located on the described flabellum external end edge, this driver element has the stator of this two impellers unit start of control, one twines the coil of being located on this stator, reaching one is arranged on this pedestal and the circuit board that is electrically connected with this coil formation, this stator has the pole of both sides, four offices, wherein two of a side poles are magnet rings of facing one of them impeller unit, and two poles of an other side are then faced the magnet ring of another impeller unit.

This circuit board is after energising, can make this coil produce energization excitation, cooperating this coil again is to twine to be located on this stator, make four poles of this stator also can produce magnetic simultaneously, the magnet ring of each impeller unit just can be experienced the magnetic of corresponding two poles, and then produces one magnetic repulsive force drive flabellum generation rotation.

Effect of the present utility model is, only uses single stator can order about this two impellers unit rotational, must utilize two stators compared to prior art, and stator material of the present utility model and manufacture cost all can further reduce.Moreover stator of the present utility model, coil, circuit board are all between this two impellers unit, and the member distance is close, can only not simplify the circuit configuration, reduce manufacture cost, and can avoid the stator too much space that accounts for, thereby dwindle integral width.

[description of drawings]

Fig. 1 is a plan view, and existing external pole type fan is described.

Fig. 2 is a side view cutaway drawing, the external pole type fan that aid illustration is shown in Figure 1.

Fig. 3 is a plan view, and the preferred embodiment of the dual fan of the utility model single stator external pole type is described.

Fig. 4 is a side view cutaway drawing, the preferred embodiment that aid illustration is shown in Figure 3.

[embodiment]

Below by preferred embodiment and accompanying drawing the dual fan of the utility model single stator external pole type is elaborated.

Consult Fig. 3,4, the preferred embodiment of the dual fan 2 of the utility model single stator external pole type comprises a pedestal 21, two and the adjacent impeller unit 22 that are arranged on this pedestal 21, and a driver element 23 between this two impellers unit 22.

Each impeller unit 22 all have one be arranged at wheel hub 221 on this pedestal 21 rotationally, several pieces are located on the flabellum 222 on these wheel hub 221 side faces, an and magnet ring 223 that is located on described flabellum 222 external end edges.The stator 231, one that this driver element 23 has these two impellers unit, 22 starts of control twines the coil of being located on this stator 231 232, and one is arranged on this pedestal 21 and the circuit board 233 that is electrically connected with these coil 232 formation.This stator 231 has the pole 234 of both sides, four offices, and wherein two of a side poles 234 are magnet rings 223 of facing one of them impeller unit 22,234 magnet rings 223 in the face of another impeller unit 22 of two poles of an other side.

This circuit board 233 is after energising, can make this coil 232 produce energization excitation, cooperating this coil 232 again is to twine to be located on this stator 231, and four poles 234 that make this stator 231 also can produce as shown in Figure 3 N, S magnetic action simultaneously, at this moment, the magnet ring 223 of each impeller unit 22 just can be experienced the magnetic of corresponding two poles 234, and then produces one magnetic repulsive force drive flabellum 222 generation rotations, reaches the purpose that produces a large amount of radiating airflows.

By above-mentioned design, the dual fan 2 of the utility model single stator external pole type has the advantage of the following stated when manufacturing:

(1) material and the manufacture cost of minimizing stator 231 and coil 232:

Employed stator 231 quantity of the utility model are single, and between this two impellers unit 22, the shape of this stator 231 is to be outward extended with four poles 234, therefore utilizing this coil 232 to twine is located on this stator 231, just can make this four pole 234 all produce magnetic during energization excitation, review in the prior art, must utilize this first, two stators 141,142 distances are far away, and be positioned at the both sides of this two impellers unit 22, twine with being connected to each other again and establish two inductor coils 145,146, could energization excitation and make each pole 143,144 produce magnetic, in comparison, employed stator 231 quantity of the utility model reduce, material and manufacture cost all can further reduce, and do not need similar prior art will cross over longer distance as for 232 of the coils that is twined on this stator 231, therefore, the coiling length of this coil 232 is shorter, can effectively reduce the cost of material of coil 232.

(2) simplify power supply wiring operation, reduction manufacture cost:

In the prior art, be that this first and second stator 141,142 is provided in this 12 outsides, two impellers unit respectively, between this two impellers unit 12 circuit board 13 is set then, generally speaking, each member distance is quite far away, the circuit configuration is led to establish and is seemed comparatively complicated, review stator 231 of the present utility model, coil 232, circuit board 233 all between this two impellers unit 22, each member distance is quite contiguous, therefore, the utility model does not need numerous and diverse distribution and backguy operation, has the operation of the power supply wiring of simplification, reduces manufacture cost and other advantages.

(3) reduced width:

If the utility model is the fan that produces identical air quantity with prior art, under this prerequisite, first of prior art, two stators 141, the 142nd, be arranged at the outside of this two impellers unit 12 with symmetric mode, therefore, the overall space width is with first, two stators 141,142 outer rims are exceeded, seem comparatively huge, take more space, reviewing the utility model only needs between this two impellers unit 22 single stator 231 to be set, can drive this two impellers unit 22 rotates, overall space width of the present utility model is to exceed with impeller unit 22 outer rims, seem comparatively narrow, avoid the stator 231 too much space that accounts for, obvious the utility model not only can reduced width, and simultaneously still can be same as prior art and produce onesize air quantity, can't weaken the fan radiating effect.

In sum, the dual fan 2 of the utility model single stator external pole type, one side is only used single stator 231 to get final product energization excitation and is ordered about this two impellers unit 22 and rotate, therefore, the material of stator 231 and manufacture cost all can further reduce, on the other hand, because the coil 232 that is twined on the stator 231 of the present utility model does not need similar prior art will cross over longer distance, therefore, these coil 232 coiling lengths are shorter, can effectively reduce the cost of material of coil 232.Moreover, stator 231 of the present utility model, coil 232, circuit board 233 are all between this two impellers unit 22, each member distance is quite contiguous, be not merely able to simplify integrated circuit configuration operation, reduce manufacture cost, and can avoid the stator 231 too much space that accounts for, and then dwindle integral width, so can reach the purpose of this utility model really.

Claims

1. dual fan of single stator external pole type, comprise a pedestal, reach the two also adjacent impeller unit that are arranged on this pedestal, each impeller unit all have one be arranged at wheel hub on this pedestal, several pieces are located on the flabellum on this wheel hub side face, and a magnet ring that is located on the described flabellum external end edge, it is characterized in that:

The dual fan of this single stator external pole type also comprises a driver element between this two impellers unit, and this driver element has a stator, and twines the coil of being located on this stator, reaching one is arranged on this pedestal and the circuit board that is electrically connected with this coil, this stator has the pole of both sides, four offices, wherein two of a side poles are magnet rings of facing one of them impeller unit, and two poles of an other side are then faced the magnet ring of another impeller unit.