CN201218235Y

CN201218235Y - Vane device for radiating fan

Info

Publication number: CN201218235Y
Application number: CNU2008201259140U
Authority: CN
Inventors: 陈建荣; 郑瑞鸿; 林信宏; 谭稊引
Original assignee: Yen Sun Technology Corp
Current assignee: Yen Sun Technology Corp
Priority date: 2008-07-09
Filing date: 2008-07-09
Publication date: 2009-04-08
Anticipated expiration: 2018-07-09

Abstract

A fan blade device for a heat dissipating fan comprises a hub and a plurality of fan blades circularly arranged at intervals on the hub. Each fan blade comprises a first surface, a second surface arranged at intervals with the first surface, a plurality of first convex ribs arranged at intervals on the first surface, and a plurality of second convex ribs arranged at intervals on the second surface, wherein a plurality of first guide grooves are fitly formed by the first convex ribs and the first surface; and a plurality of second guide grooves are fitly formed by the second convex ribs and the second surface. The first guide grooves and the second guide grooves are used to direct the air flow aspirated by a wind inlet to improve the flow rate of the air flow, effectively prevent the air flow from dissipating and further reduce the burble, so that the heat dissipating efficiency can be improved, and the noise caused by rotating can be reduced.

Description

The flabellum device of radiation fan

[technical field]

The utility model relates to a kind of flabellum device, particularly relates to a kind of flabellum device of radiation fan.

[background technique]

The application area field of radiation fan is extensive, and electronic instrument, industrial products such as, or even very powerful and exceedingly arrogant in recent years CPU can be seen the extension of radiation fan and use.Generally speaking, radiation fan can roughly be divided into axial flow and centrifugal two kinds of aspects by the direction of air-flow air-out, the air-flow trend of axial flow fan flows for the axis direction along this fan, it is exactly the direction air-out of vertical this blade surface of revolution, the air-flow trend of centrifugal fan is the radially air-out along this blade surface of revolution, is at present to use with the most normal heat radiation that is applied to computer system of axial-flow type radiator fan.

Consult Fig. 1,2, existing axial-flow type radiator fan 1 includes a hollow shape shell block 11, a wheel hub 12, and most sheets are arranged at the blade 13 on the outer circumferential face of this wheel hub 12 at intervals.This shell block 11 has a wind inlet 113 that is formed at end face 111, and an exhaust outlet 114 that is formed at bottom surface 112, this wheel hub 12 be place this hollow shell block 11 inside and can be around himself axis rotation.Each blade 13 has the guide face 130 of a convex surface towards this wind inlet 113.

When this existing axial-flow type radiator fan 1 turned round, air can be drawn into by the wind inlet 113 of this shell block 11, via described blade 13 air-flow was discharged toward the exhaust outlet 114 of this shell block 11, to reach the effect of axial air-supply again.

Yet this existing axial-flow type radiator fan 1 still has following shortcoming and remains to be improved when running:

1. air quantity is little:

Because the guide face 130 of each blade 13 is to be convex surface and towards this wind inlet 113, after entering this wind inlet 113, air-flow will clash into mutually with the guide face 130 of described blade 13, make air-flow overflow to loose and cause air-flow more slow, cause falling sharply from blast and air quantity that this exhaust outlet 114 is discharged along the trend that this guide face 130 sinks to all around.

2. noise is big:

Still continuous aforementioned, to around the air-flow that overflow to loose flow to side along this guide face 130 with rotating the centrifugal force that is produced, the influence of the described blade 13 in being rotated again, and between the gap of each blade 13 and this shell block 11, form flow-disturbing, and then generation is cut the formed noise of sound by wind.

As mentioned above, existing axial-flow type radiator fan 1 causes the impairment of blast, and significantly reduces its radiating effect because air-flow sinking power weakens.Generally speaking, if cause blast lower because of the structure of blade 13, and then when influencing heat dissipation, can be by increasing rotating speed to promote its blast, but relatively, because described blade 13 quick rotation, also can cause 11 of the outer rim of blade 13 and this shell blocks to cut sound simultaneously because of air disturbance produces bigger wind.

Therefore, how can increase the power that air-flow sinks on the one hand,, can reduce the noise when rotating on the other hand again, become the relevant dealer of fan manufacturing and need the target of making great efforts research and development badly to increase blast and then to promote radiating efficiency.

[model utility content]

The purpose of this utility model is to provide a kind of can promote radiating efficiency, and can reduce the flabellum device of the radiation fan of the noise that is produced when rotating.

For achieving the above object, the flabellum device of the utility model radiation fan, this radiation fan comprise a hollow shape housing, are arranged at rotationally wherein for this flabellum device, and this housing has a wind inlet and an exhaust outlet of the opposite location of laying respectively at.And this flabellum device is to comprise a wheel hub that is arranged at rotationally in this housing, and the multi-disc spacer ring is located at the flabellum on this wheel hub.

Each flabellum all comprises a first surface, one with this first surface second surface separately, one connects the inlet lateral margin of this first surface and this second surface and contiguous this wind inlet, one connects the outlet lateral margin of this first surface and this second surface and contiguous this exhaust outlet, first fin that many spaced is arranged on this first surface and extends towards this outlet lateral margin direction, and many spaced are arranged on this second surface and towards second fin of this outlet lateral margin direction extension, described first fin matches with this first surface and defines a plurality of first guide grooves, and described second fin matches with this second surface and defines a plurality of second guide grooves.

Effect of the present utility model is, by described first and second fin and described first and second guide groove, guiding is from air-flow that this wind inlet sucked, increase the flow rate of air-flow, effectively prevent the air-flow loss and then reduce flow-disturbing, promoting radiating efficiency, and can reduce the noise when rotating.

[description of drawings]

Fig. 1 is a plan view, and existing axial-flow type radiator fan is described.

Fig. 2 is a side view cutaway drawing, the axial-flow type radiator fan that aid illustration is shown in Figure 1.

Fig. 3 is a three-dimensional exploded view, and the preferred embodiment of the flabellum device of the utility model radiation fan is described.

Fig. 4 is a side view cutaway drawing, the side-looking aspect of this preferred embodiment of aid illustration.

[embodiment]

Be elaborated below by preferred embodiment and accompanying drawing flabellum device to the utility model radiation fan.

Consult Fig. 3 and Fig. 4, the preferred embodiment of the flabellum device 4 of the utility model radiation fan 2, this radiation fan 2 comprises a hollow shape housing 3, is arranged at rotationally wherein for this flabellum device 4, and this housing 3 has a wind inlet 31 and an exhaust outlet 32 of the opposite location of laying respectively at.This flabellum device 4 comprises a wheel hub 41 that is arranged at rotationally in this housing 3, and the multi-disc spacer ring is located at the flabellum 42 on this wheel hub 41.

Each flabellum 42 all comprises a first surface 421, one with this first surface 421 second surface 422 separately, one connects the inlet lateral margin 423 of this first surface 421 and this second surface 422 and contiguous this wind inlet 31, one connects the outlet lateral margin 424 of this first surface 421 and this second surface 422 and contiguous this exhaust outlet 32, a plurality of spaced first fins 425 that are arranged on this first surface 421 and extend towards these outlet lateral margin 424 directions, and a plurality of spaced are arranged on this second surface 422 and towards second fin 426 of this outlet lateral margin 424 directions extension, described first fin 425 is equidistantly to extend towards these outlet lateral margin 424 directions along this first surface 421 from this inlet lateral margin 423, and described second fin 426 is equidistantly to extend along this second surface 422 towards these outlet lateral margin 424 directions from this inlet lateral margin 423, and described first fin 425 matches with this first surface 421 and defines a plurality of first guide grooves 427, and described second fin 426 matches with this second surface 422 and defines a plurality of second guide grooves 428.

By above-mentioned design, the flabellum device 4 of the utility model radiation fan 2 has the advantage of the following stated when actual rotation:

1. air quantity is big, blast is high:

When air-flow flows into via this wind inlet 31, guiding by described first guide groove 427, air-flow is settled down to rapidly between per two flabellums 42, reduce the air-flow loss and avoid air disturbance, moreover, when air-flow flows to this exhaust outlet 32 gradually, can be because of the guiding of described second guide groove 428, promptly flow out and can take advantage of a situation via this exhaust outlet 32, design whereby, this flabellum device 4 can have concurrently simultaneously when actual rotation and reduce air-flow loss and the advantage of accelerating air current flow speed, effectively promotes radiating efficiency.

2. minimizing noise:

Because when air-flow is flowed into by this wind inlet 31, guided by described first guide groove 427 immediately, generation is flowed than the tool directivity, is difficult for loss sinuous flow everywhere, so 3 just difficult generations because of the impact of air disturbance by wind of described flabellum 42 and this housing are cut the formed noise of sound.

In sum, the flabellum device 4 of the utility model radiation fan 2, utilize described first, two fins 425,426 are spaced respectively and are arranged at first of each flabellum 42, two surfaces 421, on 422, by described first, two fins 425,426 respectively with first of each flabellum 42, two surfaces 421,422 match, defined described first, two guide grooves 427,428, make the air-flow that is sucked by this wind inlet 31 can be via described first, two guide grooves 427,428 guiding, increase airspeed and make the rapid sedimentation of air-flow, and reduce the air-flow loss and avoid air disturbance, effectively promote radiating efficiency, simultaneously, owing to reduce the air-flow loss, so 3 also difficult generations because of the impact of air disturbance by wind of described flabellum 42 and this housing are cut the formed noise of sound, so can reach the purpose of this utility model really.

Claims

1. the flabellum device of a radiation fan, this radiation fan comprises a hollow shape housing, be arranged at rotationally wherein for this flabellum device, this housing has a wind inlet and exhaust outlet of the opposite location of laying respectively at, this flabellum device comprises a wheel hub, and the multi-disc spacer ring is located at flabellum on this wheel hub, it is characterized in that:

Each flabellum all comprises a first surface, one with this first surface second surface separately, an inlet lateral margin that connects this first surface and this second surface and contiguous this wind inlet, an outlet lateral margin that connects this first surface and this second surface and contiguous this exhaust outlet, first fin that many spaced is arranged on this first surface and extends towards this outlet lateral margin direction, and many spaced are arranged on this second surface and towards second fin of this outlet lateral margin direction extension, described first fin matches with this first surface and defines a plurality of first guide grooves, and described second fin matches with this second surface and defines a plurality of second guide grooves.

2. the flabellum device of radiation fan according to claim 1 is characterized in that:

Described first fin is being arranged on this first surface of equidistantly arranging.

3. the flabellum device of radiation fan as claimed in claim 1 or 2 is characterized in that:

Described second fin is being arranged on this second surface of equidistantly arranging.

4. as the flabellum device of radiation fan as described in the claim 3, it is characterized in that:

Described first fin is to extend towards this outlet lateral margin direction along this first surface from this inlet lateral margin, and described second fin is to extend towards this outlet lateral margin direction along this second surface from this inlet lateral margin.