CN101193532B

CN101193532B - Heat radiator

Info

Publication number: CN101193532B
Application number: CN2006101571208A
Authority: CN
Inventors: 周世文; 陈菓; 刘鹏; 陈俊吉
Original assignee: Hong Jun Precision Industry Co ltd; Fuzhun Precision Industry Shenzhen Co Ltd
Current assignee: Hong Jun Precision Industry Co ltd; Fuzhun Precision Industry Shenzhen Co Ltd
Priority date: 2006-11-29
Filing date: 2006-11-29
Publication date: 2010-11-10
Anticipated expiration: 2026-11-29
Also published as: CN101193532A

Abstract

A heat dissipating device comprises a radiator, and a fan arranged on the radiator; the air flow produced by the fan blows the radiator. A wind shield which can prevent the air flow refluencing is windingly arranged surrounding the fan. The outer boundary of the projection of the wind shield along the extension direction of the axle of the fan is beyond the outer boundary of the projection of the radiator along the extension direction of the axle of the fan. As the outer boundary of the projection of the wind shield along the extension direction of the axle of the fan is beyond the outer boundary of the projection of the radiator along the extension direction of the axle of the fan, the wind shield can effectively avoid that the air flow produced by the fan reflows to the wind inlet of the fan after flowing through the radiator further reflowing to the radiator, thus reducing the temperature of the wind inlet of the fan and raising the efficiency of heat dissipation for the heat dissipating device.

Description

Heat abstractor

Technical field

The present invention relates to a kind of heat abstractor, particularly a kind of heat abstractor that is applied to electronic component.

Background technology

Along with developing rapidly of electronic industry, increase substantially as the arithmetic speed of electronic component in the computer, the heat of its generation also increases severely thereupon, and how the heat with electronic component distributes, and to guarantee its normal operation, is the essential problem that solves of dealer always.As everyone knows, the central processing unit that is installed on the motherboard is the core of computer system, and when computer moved, central processing unit produced heat.Too much heat can cause central processing unit normally to move.For effectively distributing the heat that central processing unit produces in running, install a heat abstractor thereon additional usually so that the heat of its generation is distributed.This heat abstractor mainly is made up of a fan and radiator, wherein fan is locked on the radiator, radiator places on the central processing unit, thereby the heat that produces during central processing unit work, from heat sink radiates, fan running produces strong wind to radiator on the other hand on the one hand, to continue taking away heat from radiator, avoid central processing unit overheated and reduce operating efficiency, even damage.

Yet, when airflow passes radiator that fan produces arrives on the circuit board at central processing unit place, air-flow is stopped and is produced rebound phenomena, so, easily form and reflux, enter radiator by the air intake vent of fan once more after the thermal current bounce-back, so circulation causes the flow resistance of air-flow to increase the heat exchange action that influences between air-flow and the radiator, reduce the heat dispersion of radiator greatly, so, the problem that airflow reflux becomes needs solution how effectively to be prevented.

Summary of the invention

In view of this, be necessary to provide a kind of heat abstractor that airflow reflux can effectively be prevented and then have preferable heat dispersion.

A kind of heat abstractor, comprise a radiator and be installed on a fan on the radiator, the air-flow that described fan produces blows to radiator, one can prevent that the deep bead winding of described airflow reflux is around fan, described deep bead along the external boundary of the projection of fan shaft bearing of trend at radiator along outside the external boundary of the projection of fan shaft bearing of trend, described deep bead is the flat circle ring-type.

Compared to prior art, the present invention is provided with a deep bead, since deep bead along the external boundary of the projection of fan shaft bearing of trend at radiator along outside the external boundary of the projection of fan shaft bearing of trend, be back to fan air intake vent and then inflow radiator once more thus behind the airflow passes radiator that this deep bead can effectively avoid fan to produce, thereby reduced the temperature of fan air intake vent, improved the radiating efficiency of heat abstractor.

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

Description of drawings

Fig. 1 is the three-dimensional exploded view of heat abstractor of the present invention.

Fig. 2 is the part three-dimensional assembly diagram of heat abstractor of the present invention, has wherein omitted fan and deep bead.

Fig. 3 is the constitutional diagram of Fig. 1.

Fig. 4 is the phantom of Fig. 3.

Embodiment

See also Fig. 1, heat abstractor of the present invention is in order to dispel the heat to a heat-generating electronic elements (figure does not show) that is installed on the circuit board (figure does not show), it comprises a radiator 10, be installed on a fan 20 and a deep bead 30 on the radiator 10, wherein this deep bead 30 can effectively be avoided refluxing once more behind the airflow passes radiator 10.

This radiator 10 comprises that the main part 12 of a multiple edge body reaches the bifurcated plate 120 that stretches out and be provided with from the seamed edge of this main part 12.This main part 12 is a four bank or ridge in the present embodiment.Setting is extended in the side of some radiating fin 14 autonomous bodies 12 and bifurcated plate 120, and these radiating fins 14 are divided into four groups, and these four groups of radiating fins 14 lay respectively at different four directions, and two groups of adjacent radiating fin 14 place directions are vertical mutually.Four sides of main part 12 and bifurcated plate 120 form four zones, and every group of radiating fin 14 lays respectively in the corresponding zone.Wherein form a installing space 102 in order to accommodate fastener 50 between the two adjacent radiating fin groups.A pair of mounting bracket 60 is installed on radiator 10 bottoms, each mounting bracket 60 comprises that one is attached at the base portion 62 at main part 12 edges and extends the lug 64 of setting outside base portion 62 2 relative terminal horizontal, and this lug 64 is corresponding to the bifurcated plate 120 of radiator 10 and extend beyond bifurcated plate 120 in installing space 102.Base portion 62 is provided with an installing hole 620 with the link position place of lug 64, thereby pass with radiator 10 screw locks for screw 70 mounting bracket 60 is fixed to radiator 10 bottoms.The free end of lug 64 is provided with a through hole 640 and passes for fastener 50.

Please consult Fig. 2 simultaneously, four buckling elements 40 are installed on radiator 10 tops and radiating fin 14 buckles, and it is in order to be fixed in fan 20 and deep bead 30 on the radiator 10.Each buckling element 40 is that a metal lamellar body integrated punching forms, and it comprises that a holding parts 42 that is snapped in two adjacent radiating fins 14 in same group, extends the clamp 46 that the L shaped connecting portion 44 and of the lengthwise that is provided with is provided with vertically downward from connecting portion 44 ends from holding parts 42.This holding parts 42 comprises the parallel side wall 420 of pair of opposing, and the inner surface of this sidewall 420 is resisted against the lateral surface of two adjacent radiating fins 14.These holding parts 42 tops are provided with an opening 422 that closes on described two adjacent radiating fins 14 in sidewall 420 corresponding positions.Spacing between spacing between two opposing sidewalls 420 and this two adjacent radiating fin 14 is roughly the same so that this opposing sidewalls 420 inserts and puts this two adjacent radiating fin 14 therebetween, thereby when avoiding self-tapping screw 80 in the spacing that opening 422 inserts between the two adjacent radiating fins 14, radiating fin 14 is squeezed and outwards distortion.A pair of elastic arm 424 extends setting from the upper limb of two opposing sidewalls 420, is beneficial to the insertion of self-tapping screw 80.Holding parts 42 further includes pair of catches portion 426, this latch part 426 from sidewall 420 away from the setting that vertically extends internally of an end of clamp 46, each latch part 426 is one to be parallel to the plate body of clamp 46, and this latch part 426 is in order to the outer end against adjacent radiating fin 14.

Please consult Fig. 1 once more, it is circular that deep bead 30 is thin slice, and its central authorities are provided with an air intake vent 32 in alignment with fan 20, and the air-flow that produces for fan 20 is blown in the radiator 10.Four installing hole 320 symmetries corresponding to the opening 422 of buckling element 40 be located in air intake vent 32 around, insert for self-tapping screw 80.This deep bead 30 extends beyond the external boundary of radiator 10.

Fan 20 is a tube-axial fan, and it comprises a circular framework 22 and is contained in motor 24 in the framework 22.These framework 22 outside top and bottom margin are formed with the outer horizontally extending triangular shape lug 220,222 of four-way respectively, and wherein top lug 220 is transpostion interval setting up and down with bottom lugs 222.The lug 222 that is positioned at fan 20 bottoms is provided with the through hole 2220 corresponding with the installing hole 320 of deep bead 30 and passes for self-tapping screw 80.

See also Fig. 3 and Fig. 4, when heat abstractor of the present invention was assembled, deep bead 30 was located on the lug 222 of fan 20 bottoms; Self-tapping screw 80 pass successively from top to bottom deep bead 30 installing hole 320, fan 20 bottom lugs 222 through hole 2220, be snapped in the gap of further stretching into behind the opening 422 of buckle element 40 of adjacent radiating fin 14 between the described two adjacent radiating fins 14, by these self-tapping screw 80 tapping screw threads and this two adjacent radiating fin 14 screw locks, thereby this fan 20 and deep bead 30 firmly are installed on the top of radiator 10; It is sealed that fastener 50 passes the backboard below circuit board behind mounting bracket 60 and the circuit board (figure does not show), thereby this heat abstractor is fixed on this circuit board.

Be appreciated that ground, deep bead 30 of the present invention also can be installed on the below of fan 20 bottom lugs 222; Also can be placed on the periphery of the framework 22 of fan 20, make deep bead 30 between the top and bottom of fan 20, but as long as deep bead 30 along the external boundary of the projection of fan shaft bearing of trend radiator 10 along outside the external boundary of the projection of fan shaft bearing of trend and barrier air reflux.

When heat abstractor of the present invention uses, the air-flow that fan 20 produces blows between the radiating fin 14 of radiator 10, be passed on the radiating fin 14 after main part 12 absorptions of the heat that heat-generating electronic elements produces by radiator 10, and then the heat on the radiating fin 14 is taken away by the air-flow that fan 20 produces, deep bead 30 can stop that thermal current is back in the radiator 10 once more, thereby reaches the purpose that improves heat dispersion.

In sum, because the present invention has used deep bead 30, can effectively stop airflow reflux to radiator 10, this deep bead 30 is plane tabular simultaneously, not limited by spatial volume, can apply to the system of various different sizes, play the effect of backflow, adaptability is strong.

Claims

1. heat abstractor, comprise a radiator and be installed on a fan on the radiator, the air-flow that described fan produces blows to radiator, it is characterized in that: one can prevent that the deep bead winding of described airflow reflux is around fan, described deep bead along the external boundary of the projection of fan shaft bearing of trend at radiator along outside the external boundary of the projection of fan shaft bearing of trend, described deep bead is the flat circle ring-type.

2. heat abstractor as claimed in claim 1 is characterized in that: described deep bead central authorities are provided with an air intake vent of aiming at fan.

3. heat abstractor as claimed in claim 1 is characterized in that: described fan bottom is formed with some lugs, and described deep bead is seated on the described lug.

4. heat abstractor as claimed in claim 1 is characterized in that: described radiator comprises the bifurcated plate that the seamed edge of the main part of a multiple edge body and autonomous body stretches out and is provided with, and the side of autonomous body of some radiating fins and bifurcated plate is extended and is provided with.

5. heat abstractor as claimed in claim 4 is characterized in that: some buckle elements are installed on radiator top and radiating fin buckle.

6. heat abstractor as claimed in claim 5 is characterized in that: described each buckle element comprises that the holding parts, of a clamping two adjacent radiating fins extends a connecting portion and a clamp from the terminal downward setting of connecting portion that is provided with from holding parts.

7. heat abstractor as claimed in claim 6 is characterized in that: described holding parts comprises a pair of described two adjacent radiating fins two sidewalls therebetween that insert and put, and described holding parts top is provided with an opening in the sidewall corresponding position.

8. heat abstractor as claimed in claim 6 is characterized in that: described buckle element has pair of catches portion, and this latch part engages with described two adjacent radiating fin outer ends.

9. as claim 5 or 7 described heat abstractors, it is characterized in that: some screws pass described fan, deep bead, buckle element and then cooperate with radiating fin.