CN201059274Y

CN201059274Y - External electrode type dual fan

Info

Publication number: CN201059274Y
Application number: CNU200720152753XU
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

An 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 two mutually adjacent stators positioned between two fan wheel units, and a single coil is wound simultaneously on two stators. By means of the design, on one hand, the utility model can effectively decrease the material and manufacturing cost of the coil and is difficult to produce the problems of magnetic conduction interference and high magnetic loss at the same time; one the other hand, two stators are close in distance and positioned between two fan wheel units, which is helpful to simplify the configuring operation of the whole circuit, can prevent the stator form occupying excessive space and then reduce the whole width.

Description

The dual fan of 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 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 the further place of improvement, for example: first and second stator 141,142 of this external pole type fan 1 must twine two inductor coils 145,146 respectively, the related material and the fabricating cost that can improve coil, and the integrated circuit configuration is comparatively complicated.Moreover, under the situation that two inductor coils 145,146 are set, when energization excitation, produce the problem that interferes with each other often easily, cause whole magnetic loss higher, the magnetic repulsive interaction that difficult formation is bigger rotates its radiating efficiency of related reduction to drive this two impellers unit 12.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 external pole type dual fan, and material and the manufacture cost with coil all can effectively reduce, magnetic loss is lower, simplify integrated circuit configuration operation, radiating efficiency is preferable, dwindle advantage such as integral width.

For achieving the above object, the dual fan of the utility model external pole type 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 have two contiguous each other and between this two impeller and in order to control the stator of this two impellers unit start, one twines the coil of being located on this two stator simultaneously, reaching one is arranged on this pedestal and the circuit board that is electrically connected with this coil formation, each stator have two apart from one another by pole, and the joint of this two pole of connection, the joint of this two stator is to be close to each other and to supply this coil to twine to establish, and two poles of each stator then are the magnet rings that regards to corresponding impeller unit.

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

Effect of the present utility model is, only use single coil to be wrapped on two contiguous mutually stators, but order about this two impellers unit rotational with regard to energization excitation, compared to prior art, coil usage quantity of the present utility model is less, length is shorter, can effectively reduce the material and the manufacture cost of coil, also can avoid the stator too much space that accounts for, and then dwindle integral width, also be difficult for producing the logical magnetic disturbance of coil, magnetic loss problem of higher simultaneously.

[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 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 external pole type is elaborated.

Consult Fig. 3,4, the preferred embodiment of the dual fan 2 of the utility model 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.This driver element 23 have two contiguous each other and between this two impellers unit 22 and twine the coil of being located on this two stator 231 232 simultaneously in order to the stator 231, of controlling these two impellers unit, 22 starts, and one be arranged on this pedestal 21 and with this coil 232 and form the circuit board 233 that is electrically connected.Each stator 231 have two apart from one another by pole 234, an and joint 235 that connects this two pole 234.The joint 235 of this two stator 231 is to be close to each other and to supply this coil 232 to twine to establish, and 234 of two poles of each stator 231 are the magnet rings 223 that regard to corresponding impeller unit 22.

This circuit board 233 is after energising, can make this coil 232 produce energization excitation, cooperating this coil 232 again is to twine simultaneously to be located on this two stator 231, make two poles 234 of each 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 external pole type has the advantage of the following stated when manufacturing:

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

Each stator 231 of the present utility model all is outward extended with two poles 234, and this two stator 231 is very contiguous, cooperate again simultaneously and utilize single coil 232 to be wrapped on the contiguous mutually joint 235 of this two stator 231, therefore, just can make two poles 234 of each stator 231 all produce magnetic during these coil 232 energization excitations, review in the prior art, must be equipped with two inductor coils 145,146 be wrapped in respectively two distances quite far away first, two stators 141, on 142, could energization excitation and make each pole 143,144 produce magnetic, in comparison, coil 232 usage quantities of the present utility model have only single, stator 231 distances of being twined are near again, cause coil 232 coiling lengths shorter, can effectively reduce the material and the manufacture cost of coil 232 whereby.

(2) magnetic loss is lower, guarantees that this two impellers unit 22 normally rotates:

In the prior art, because two inductor coils 145,146 are set simultaneously, therefore when energization excitation, produce the problem that interferes with each other often easily, cause whole magnetic loss higher, reviewing the utility model only utilizes single coil 232 to be wrapped in simultaneously on this two stator 231 of mutual vicinity, naturally be difficult for producing the situation that energization excitation interferes with each other, magnetic loss is higher, can effectively form bigger magnetic repulsive interaction and normally rotate, guarantee its radiating efficiency to drive this two impellers unit 22.

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

Generally be in the prior art with this first, two stators 141,142 are 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 two stator 231 close together of the present utility model and be installed on the circuit board 233 between this two impellers unit 22, and cooperate single coil 232 to be wrapped in simultaneously on two stators 231, make that this driver element 23 (two stator 231+, one coil 232+, one circuit board 233) generally speaking is a kind of miniaturized circuit modular construction, can be arranged between this two impellers unit 22, help to simplify integrated circuit configuration operation, reduce manufacture cost.

(4) 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 side outside 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 roomy, take more space, reviewing two stators 231 of the present utility model all is arranged between this two impellers unit 22, just can drive this two impellers unit 22 whereby rotates, so overall space width of the present utility model is to exceed with impeller unit 22 outer rims, seem comparatively narrow, effectively avoid the stator 231 too much space that accounts for, obvious the utility model not only can reduced width, and still can be same as the onesize air quantity of prior art generation simultaneously, can't weaken the fan radiating effect.

In sum, the dual fan 2 of the utility model external pole type, only use single coil 232 to be wrapped on two contiguous mutually stators 231 on the one hand, but order about this two impellers unit 22 rotates with regard to energization excitation, therefore, coil 232 usage quantities of the present utility model are less, length is shorter, can effectively reduce the material and the manufacture cost of coil 232, also be difficult for producing coil 232 logical magnetic disturbances, magnetic loss problem of higher simultaneously, guarantee that this two impellers unit 22 can normally rotate.On the other hand, because this two stators, 231 close together and between this two impellers unit 22 not only help to simplify integrated circuit configuration operation, 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 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 external pole type also comprises a driver element, this driver element has two contiguous each other and twine simultaneously to be located on this two stator at the stator, between this two impeller coils, reaching one is arranged on this pedestal and the circuit board that is electrically connected with this coil, each stator have two apart from one another by pole, and the joint of this two pole of connection, the joint of this two stator is to be close to each other and to supply this coil to twine to establish, and two poles of each stator then are the magnet rings that regards to corresponding impeller unit.