CN200975371Y

CN200975371Y - Low-windage heat radiating fun structural

Info

Publication number: CN200975371Y
Application number: CN 200620015545
Authority: CN
Inventors: 许文昉; 范纲龙; 林春演
Original assignee: DONGGUAN POWERLOGIC ELECTRONIC Co Ltd
Current assignee: DONGGUAN POWERLOGIC ELECTRONIC Co Ltd
Priority date: 2006-10-31
Filing date: 2006-10-31
Publication date: 2007-11-14
Anticipated expiration: 2016-10-31

Abstract

The utility model relates to a heat dissipation fan structure, in particular to a low wind resistance and noise heat dissipation fan structure, comprising a frame used for bearing a loop winding and the rotation of a fan leaf; wherein the frame comprises a ring body, and a static fan leaf is arranged in the inner wall of the ring body in the fan leaf rotation direction. The utility model has the advantages of that: when the heat dissipation fan is put through the power supply, the fan leaf rotates in the ring body to introduce the outside air current into the upper part of the ring body and the air current entering into the ring body flows along the static fan leaf in the rotation direction of the fan leaf; and then under the guide and even flow of the static fan leaf, the air flow resistance can be reduced, further reducing the noise produced when rotating the fan leaf to a great extent and increasing the output air quantity.

Description

The cooling fan structure of low windage

Technical field

The utility model relates to a kind of cooling fan structure, refers in particular to the cooling fan structure of a kind of low windage and low noise.

Background technique

Radiation fan is a kind of indispensable important component for sink, because the thermal source that it can fin absorbs with loosing distributes fast, to guarantee the normal operation of electrical assembly.

As shown in Figure 1, traditional radiation fan 1b comprises framework 11b and is articulated in the flabellum 12b of rotation in the framework 11b, between the base of flabellum 12b inside and framework 11b, dispose coil groups, when the circuit board turn-on power of coil groups, flabellum 12b is rotated in framework 11b.When flabellum 12b rotates, being directed in the framework 11b of outside distinguished and admirable formation rotation, at the distinguished and admirable framework 11b that enters when inner, can and framework 11b internal face bump, and produce noise.Therefore, when flabellum 12b rotating speed was fast more, noise also will be big more relatively.

So a kind of low noise in market, just occurred and can increase the radiation fan of discharge quantity of fan, ' the fan frame mechanism of fan ' patent document as TaiWan, China patent announcement M244490 number, technological scheme in this patent document is traditional framework to be changed into by plural convex unit formed, when flabellum rotates, distinguished and admirable top and side direction by fan entered, to reach the effect that reduces noise and increase discharge quantity of fan.But, though the Frame Design of this kind can increase air output, enter from fan top and side direction owing to distinguished and admirable, cause distinguished and admirable mutual bump easily, make distinguished and admirable being obstructed, the effect that therefore reduces noise is more limited.

The model utility content

The utility model is at above-mentioned the deficiencies in the prior art, and main purpose is to provide a kind of and can distinguished and admirable guiding in outside and current-sharing be entered in the fan along the sense of rotation of flabellum, and the noise of fan is reduced, and the cooling fan structure that defeated air quantity increases.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of cooling fan structure of low windage comprises that described framework comprises a ring body, is provided with stator blade in inner wall of ring body in order to the framework of carrying coil groups and flabellum rotation, and this stator blade is arranged on the inner wall of ring body according to the flabellum sense of rotation;

Described stator blade is an arc; Described ring body upper limb place is extended with a protruding wall; Described protruding wall internal diameter ecto-entad is gradually little; Described flabellum is provided with an arc cap body, and this arc cap body periphery undertakes plural movable vane.

Described ring body lower edge is extended with a skirt section, and this skirt section is provided with groove; Described framework also comprises a base, and the base periphery is extended with attachment post, and this attachment post one end is provided with a breach, and the groove group on the base is located in this breach winding one; Stator blade is an arc; Protruding wall internal diameter ecto-entad is gradually little; It is one L shaped that breach is; Flabellum is provided with an arc cap body, and this arc cap body periphery undertakes plural movable vane.

The beneficial effect of the cooling fan structure of a kind of low windage of the utility model is: when the radiation fan turn-on power, flabellum rotates in ring body, make the distinguished and admirable of outside by after the importing of ring body top, and the distinguished and admirable formation that enters in the ring body is flow through along stator blade according to the sense of rotation of flabellum, in the guiding of stator blade and all flow down, can reduce distinguished and admirable mobile resistance, and significantly reduce the noise that is produced when flabellum rotates, and the air quantity of output is increased.

Description of drawings

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

Fig. 1 be prior art the overall structure schematic representation;

Fig. 2 is the utility model embodiment one a STRUCTURE DECOMPOSITION schematic representation;

Fig. 3 is the utility model embodiment one an overall structure schematic representation;

Fig. 4 is the utility model embodiment one an overall structure plan view;

Fig. 5 is the utility model embodiment one an overall structure side view;

Fig. 6 is the utility model embodiment two a STRUCTURE DECOMPOSITION schematic representation.

The drawing reference numeral explanation:

1, framework 11, ring body 111, arc stator blade

112, protruding wall 12, base 121, attachment post

121a, channel 1211a, groove 122, containing space

123, hollow cylinder 2, coil groups 21, circuit board

22, coil 23, hollow cylinder 3, flabellum

31, arc cap body 32, movable vane 33, axle center

4, distinguished and admirable 5, framework 51, ring body

52, arc stator blade 53, skirt section 54, groove

6, base 61, attachment post 61a, channel

611, breach 62, containing space 63, hollow cylinder

7, coil groups 71, circuit board 72, coil

73, hollow cylinder 8, flabellum 81, arc cap body

82, movable vane 83, axle center

1b, radiation fan 11b, framework 12b, flabellum

Embodiment

With reference to Fig. 2 to Fig. 6, the utility model is to implement like this:

In Fig. 2 and Fig. 3, the cooling fan structure of low windage includes framework 1, coil groups 2 and flabellum 3.Framework 1 is provided with a ring body 11, be provided with a base 12 in this ring body 11, these base 12 peripheries are extended with a plurality of attachment posts of accepting with ring body 11 inwalls 121, on base 12, also be provided with the containing space 122 of a depression in addition, the bottom of containing space 122 is extended with a hollow cylinder 123, and the groove 1211a of containing space 122 and attachment post 121 internal channel 121a forms communicating state.In addition, also be provided with plural arc stator blade 111 on these ring body 11 inwalls, stator blade 111 is to be located on ring body 11 inwalls according to flabellum 3 sense of rotation, and be extended with a protruding wall 112 at ring body 11 upper limb places, the internal diameter ecto-entad of this protruding wall 112 is the convergent shape, and this protruding wall 112 can make outside wind concentrated area be inhaled in framework 1.

Coil groups 2 comprises a circuit board 21, disposes a hollow cylinder 23 on circuit board 21, and disposes a coil 22 on the hollow cylinder 23, and this coil 22 is electric connection with circuit board 21.When coil groups 2 disposes with base 12, the hollow cylinder 23 of this coil groups 2 is inserted on the hollow cylinder 123 of base 12, circuit board 21 is disposed in the containing space 122, and the lead of circuit board 21 is piercing in ring body 11 outsides by attachment post 121 internal channel 121a.

Flabellum 3 is provided with an arc cap body 31, and these arc cap body 31 peripheries undertake plural movable vane 32, undertakes one in addition in arc cap body 31 central interior positions and penetrates the axle center 33 that articulates in hollow cylinder 123.

In Fig. 4 and Fig. 5, when the radiation fan turn-on power, flabellum 3 is to anticlockwise in the ring body 11 of framework 1, after making outside distinguished and admirable 4 to import by the protruding wall 112 of ring body 11 tops and arc cap body 31, form left-handed distinguished and admirablely 4, distinguished and admirable 4 guiding and current-sharings along arc stator blade 111 simultaneously can reduce distinguished and admirable 4 resistances that flow, so just can significantly reduce the noise that is produced when flabellum 3 rotates, and the air quantity of output is increased.

As shown in Figure 6, radiation fan comprises a framework 5, a base 6, a coil groups 7 and a flabellum 8 in the utility model embodiment two.Framework 5 which is provided with a ring body 51, on ring body 51 inwalls, has plural arc stator blade 52, this stator blade 52 is arranged on ring body 51 inwalls according to the sense of rotation of flabellum 8, and be extended with a skirt section 53 in ring body 51 lower edges, the internal diameter ecto-entad in this skirt section 53 is the convergent shape, and 53 are provided with plural groove 54 in the skirt section.

Be extended with a plurality of attachment posts 61 that are connected with the groove 54 in skirt section 53 on the periphery of base 6, be provided with the containing space 62 of a depression again in base 6, the bottom of this containing space 62 is extended with a hollow cylinder 63, and the channel 61a of containing space 62 and attachment post 61 inside forms communicating state.Attachment post 61 1 ends are provided with a L-shaped breach 611 in addition, and this breach 611 is able to groove 54 windings with skirt section 53, and base 6 is disposed on the skirt section 53 of ring body 51.

Coil groups 7 comprises a circuit board 71, disposes a hollow cylinder 73 on circuit board 71, and disposes a coil 72 on the hollow cylinder 73, and this coil 72 is electric connection with circuit board 71.When coil groups 7 disposed with base 6, the hollow cylinder 73 of this coil groups 7 was inserted on the hollow cylinder 63 of base 6, circuit board 71 is disposed in the containing space 62, and the lead of circuit board 71 is piercing in ring body 51 outsides by attachment post 61 internal channel 61a.

Flabellum 8 is provided with an arc cap body 81, and these arc cap body 81 peripheries undertake plural movable vane 82, undertakes one in addition in arc cap body 81 central interior positions and penetrates the axle center 83 that articulates in hollow cylinder 63.

Number of assembling steps of the present utility model is: earlier with coil groups 7, flabellum 8 in regular turn with the containing space 62 and hollow cylinder 63 windings of base 6, again with the breach 611 of plural attachment post 61 front ends and groove 54 windings in skirt section 53.After the radiation fan winding is finished, flabellum 8 is to anticlockwise in the ring body 51 of framework 5 when in use, make outside distinguished and admirable 4 to import through arc cap body 81 by ring body 51 tops, distinguished and admirable 4 enter form in the ring body 51 left-handed, distinguished and admirable 4 guiding and current-sharings simultaneously along stator blade 52, can reduce distinguished and admirable 4 resistances that flow, and significantly reduce the noise that is produced when flabellum 3 rotates, and then the air quantity of output is increased.

The above, it only is the preferred embodiment of the cooling fan structure of a kind of low windage of the utility model, be not that technical scope of the present utility model is imposed any restrictions, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model above any trickle modification, equivalent variations and modification that embodiment did.

Claims

1, a kind of cooling fan structure of low windage, comprise framework in order to carrying coil groups and flabellum rotation, of the present utility model being characterised in that: described framework comprises a ring body, is provided with stator blade in inner wall of ring body, and this stator blade is arranged on the inner wall of ring body according to the flabellum sense of rotation.

2, the cooling fan structure of low windage according to claim 1 is characterized in that described stator blade is an arc.

3, the cooling fan structure of low windage according to claim 1 is characterized in that described ring body upper limb place is extended with a protruding wall.

4, the cooling fan structure of low windage according to claim 1 is characterized in that described protruding wall internal diameter ecto-entad is gradually little.

5, the cooling fan structure of low windage according to claim 1 is characterized in that described flabellum is provided with an arc cap body, and this arc cap body periphery undertakes movable vane.

6, the cooling fan structure of low windage according to claim 1 is characterized in that described ring body lower edge is extended with a skirt section, and this skirt section is provided with groove; Described framework also comprises a base, and the base periphery is extended with attachment post, and this attachment post one end is provided with a breach, and the groove group on the base is located in this breach winding one.

7, the cooling fan structure of low windage according to claim 6 is characterized in that described stator blade is an arc.

8, the cooling fan structure of low windage according to claim 6 is characterized in that described protruding wall internal diameter ecto-entad is gradually little.

9, the cooling fan structure of low windage according to claim 6 is characterized in that described breach is one L shaped.

10, the cooling fan structure of low windage according to claim 6 is characterized in that described flabellum is provided with an arc cap body, and this arc cap body periphery undertakes movable vane.