CN2490700Y

CN2490700Y - Cooling device

Info

Publication number: CN2490700Y
Application number: CN01242815U
Authority: CN
Inventors: 卓统民; 吴勇; 李红霞
Original assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2001-07-17
Filing date: 2001-07-17
Publication date: 2002-05-08
Anticipated expiration: 2011-07-17

Abstract

The utility model relates to a heat sink which mainly comprises a base and a plurality of heat radiating fins which extend upwards from the surface of the base, wherein the base is provided with a flat plate part and at least one flow guide part which is formed by the outward extension of at least one side end of the flat plate part; the flow guide part is in various shapes and is provided with a plane surface or a cambered surface. When a fan (such as a systematical fan, etc.) is arranged on a position (which keeps a certain distance with the heat sink) to assist heat dissipation, guided by the cambered surface of the flow guide part of the base of the heat sink, cold air in large quantity can be blown to the surface of the base, the roots of the heat radiating fins, etc. to thoroughly disperse the heat of the surface of the base, the roots of the heat radiating fins, etc.

Description

Heat abstractor

[technical field]

The utility model is about a kind of heat abstractor, is meant a kind of cold airflow zones such as heat abstractor susceptor surface and radiating fin root of can flowing through especially, thereby obtains the heat abstractor of better heat dissipation effect.

[background technology]

Fast development along with computer industry, the arithmetic speed of computer is more and more faster, and the heat that its inner each electronic component is produced is also more and more, and if too much heat can't in time be discharged, stability when influencing computer run is when serious even can burn wherein electronic component.For this reason, industry is installed an aluminium extruded type heat abstractor at the more electronic component end face of generation heat usually, discharges heat by the assistance of system fan again.

As shown in Figure 1, common aluminium extruded type heat abstractor 1 comprises a plinth 11 and a plurality of radiating fin 12 that extends from base 11 surfaces.When base 11 thickness that experiment showed, aluminium extruded type heat abstractor 1 reached 8-10mm, thermal diffusivity was the highest, and this moment, radiating effect was best, so industry begins to increase base 11 thickness of aluminium extruded type radiator 1.But, increase along with heat abstractor 1 base 11 thickness, when system fan is assisted heat radiation in heat abstractor 1 side a distance, because the block resistance of the vertical plane of these plinth 11 sides, make upwards diffusion of cold airflow, the zones such as base 11 end faces and radiating fin 12 roots of can't flowing through, thus have a strong impact on its radiating effect, the flow direction of its cold airflow sees also Fig. 2.

[summary of the invention]

The purpose of this utility model just provides a kind of cold airflow zones such as heat abstractor base top surface and radiating fin root of can flowing through, and radiating effect is heat abstractor preferably.

The purpose of this utility model realizes by following technical proposal: the utility model heat abstractor mainly comprises a base and a plurality of from the upwardly extending radiating fin of susceptor surface, this base has a flat part and at least one diversion division, and this diversion division is stretched out by at least one side of flat part and forms.This diversion division has multiple shape, and it has plane or cambered surface.When a fan (as system fan etc.) is arranged on heat abstractor side a distance and is used for assisting heat radiation, a large amount of cold airflows are by the cambered surface guiding of the diversion division of this heat abstractor base, to blow to zones such as base top surface and radiating fin root it will fully be dispelled the heat, thereby obtain better radiating effect.

The advantage of the utility model heat abstractor is: the bootable cold airflow of diversion division on the utility model heat abstractor base flows to zones such as the susceptor surface of heat abstractor and radiating fin root, make these zones can obtain fully heat radiation, thereby obtain better radiating effect.

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

[description of drawings]

Fig. 1 is the stereogram of common aluminium extruded type heat abstractor.

Fig. 2 is the air current flow simulation schematic diagram of common aluminium extruded type heat abstractor.

Fig. 3 is the stereogram of the utility model heat abstractor first embodiment.

Fig. 4 is the air current flow simulation schematic diagram of the utility model heat abstractor first embodiment.

Fig. 5 is the stereogram of the utility model heat abstractor second embodiment.

Fig. 6 is the stereogram of the utility model heat abstractor the 3rd embodiment.

Fig. 7 is the stereogram of the utility model heat abstractor the 4th embodiment.

Fig. 8 is the experimental data table of the heat dispersion contrast of each embodiment of the utility model heat abstractor and common aluminium extruded type heat abstractor.

[embodiment]

Please consult Fig. 3 and Fig. 4 simultaneously, the utility model heat abstractor 20 mainly comprises a base 23 and a plurality of from these base 23 surperficial upwardly extending radiating fins 25, this base 23 has a flat part 27 and a diversion division 29, this diversion division 29 is stretched out by the side of flat part 27 and forms, it roughly is bullet-headed, has two cambered surfaces up and down.When a fan (as system fan etc.) is placed on these heat abstractor 20 side a distance when being used for assisting heat radiation, a large amount of cold air pass through the cambered surface guiding by the diversion division 29 of these heat abstractor 20 bases 23, to blow to zones such as base 23 surfaces and radiating fin 25 roots it will fully be dispelled the heat, thereby obtain fruit (direction of air current flow can be consulted Fig. 4) of heat radiation preferably.

Please continue to consult Fig. 5, this figure is the stereogram of the utility model second embodiment.This heat abstractor 30 and heat abstractor 20 compare, and just its diversion division 39 has a plane and a lower camber side on one.

Please continue to consult Fig. 6, this figure is the stereogram of the utility model the 3rd embodiment.This heat abstractor 40 and heat abstractor 20 compare, and just its diversion division 49 has a cambered surface and a lower plane on one.

Please continue to consult Fig. 7, this figure is the stereogram of the utility model the 4th embodiment, the two side ends of this heat abstractor 50 diversion division 59 that respectively stretches out.The shape of this diversion division 59 can be any two kinds combination in the diversion division (only showing a kind of combination among the figure) among previously described Fig. 3, Fig. 4 and Fig. 5

Please continue to consult Fig. 8, this figure is the experimental data table of the heat dispersion contrast of each embodiment of the utility model heat abstractor and common aluminium extruded type heat abstractor, its experimental situation is: ambient temperature is 20 ℃, heater element power is 40.112W, and wind speed is respectively 1.5 meter per seconds, 2.0 meter per seconds, 3.0 meter per seconds.By chart can find out the utility model heat abstractor diffusion thermal resistance θ (℃/W) all less than common aluminium extruded type heat abstractor, so its radiating effect is better than common aluminium extruded type heat abstractor.

Diversion division in above-mentioned each preferred embodiment can be one-body molded in aluminium extruded processing with heat abstractor, also can connect in addition at the side of heat abstractor to establish a vinyl cover and form.

Claims

1. heat abstractor, it mainly comprises a base and a plurality of from the upwardly extending radiating fin of this susceptor surface, it is characterized in that: this base has a flat part and at least one diversion division.

2. heat abstractor as claimed in claim 1 is characterized in that: this diversion division is that at least one side by flat part stretches out and forms.

3. heat abstractor as claimed in claim 1 is characterized in that: this diversion division connects in addition at least one side of flat part and establishes a vinyl cover and form.

4. heat abstractor as claimed in claim 1, it is characterized in that: sentence when assisting heat radiation when a fan (as system fan etc.) is placed on this heat abstractor side certain distance, a large amount of cold airflows will blow to zones such as susceptor surface and radiating fin root it will fully be dispelled the heat by the diversion division guiding of this heat abstractor base.

5. as claim 2 or 3 described heat abstractors, it is characterized in that: this diversion division roughly is bullet-headed, has two cambered surfaces up and down.

6. as claim 2 or 3 described heat abstractors, it is characterized in that: this diversion division has a cambered surface and a lower plane on one.

7. as claim 2 or 3 described heat abstractors, it is characterized in that: this diversion division has a plane and a lower camber side on one.