CN1186535C

CN1186535C - Side blown heat sink

Info

Publication number: CN1186535C
Application number: CNB01124772XA
Authority: CN
Inventors: 黄文喜; 林祖亮; 张柏灏; 黄裕鸿
Original assignee: Delta Electronics Inc
Current assignee: Delta Electronics Inc
Priority date: 2001-08-08
Filing date: 2001-08-08
Publication date: 2005-01-26
Anticipated expiration: 2021-08-08
Also published as: CN1400401A

Abstract

The invention provides a side-blowing heat sink, which comprises a fan frame and a fan blade structure, wherein the fan frame is provided with an air inlet, an air outlet and a tongue part, the air inlet is provided with a notch which is not circular and is arranged near the tongue part of a flow channel defined by a groove corresponding to the fan frame and the fan blade structure, and the notch can effectively improve the flow and static pressure of air flow discharged by the side-blowing heat sink.

Description

Side-blow heat radiator

Technical field

The present invention relates to a kind of side-blow heat radiator, particularly relate to a kind of modified model side-blow heat radiator.

Background technique

General existing side-blowing fan comprises a housing 10 and a blade structure 20 as shown in Figure 1.Wherein this housing 10 has a circular wind inlet 11 and an exhaust outlet 12 that cooperates blade structure 20.This blade structure 20 also comprises a wheel hub 21, a base plate 22 and a plurality of blade formed thereon 23.The axial admission air-flow that this blade 23 will be parallel to blade structure 20 be converted to along wheel hub 21 radially away from air-flow after discharge.

Along with the usefulness raising of electronic component, in order to promote radiating efficiency, the mode that can increase runner increases air output.Yet, this practice and infeasible in limited space.And, rule of thumb or isobaric distribution pattern (the showing demonstrations) demonstration of experiment gained, in the going out air-flow and more can and follow-uply go out air-flow and disturb the problems of deriving mutually because of the inlet stream of adverse current and wind inlet of the tongue 14 of fan frame 10, for example air output inequality, noise and air output reduce.

For this reason, in this technology, need to provide a kind of side-blow heat radiator of novelty, to address the above problem and to increase air output to promote radiating efficiency.

Summary of the invention

From the above, the wind inlet of existing side-blowing fan only is simple circle, so can meet with the problem of above-mentioned adverse current at the tongue of runner.In order to address the above problem, the present invention discloses a kind of side-blow heat radiator with special wind inlet.

The object of the present invention is to provide a kind of side-blow heat radiator, have a breach near the tongue of its wind inlet corresponding to runner and for circular, this breach can effectively improve the flow and the static pressure of air-flow that this side-blow heat radiator is discharged.

Another object of the present invention is to provide a kind of and can improve exhaust outlet and wind inlet place inlet stream and go out the side-blow heat radiator that air-flow disturbs mutually, and under same rotational speed, can improve air output effectively and increase its effect.

The object of the present invention is achieved like this, a kind of side-blow heat radiator promptly is provided, have a fan frame and a blade structure, this fan frame has a wind inlet, an exhaust outlet and a tongue, and the wind inlet of this side-blow heat radiator is in having a breach in abutting connection with this tongue place.

The present invention also provides a kind of side blown type radiating module, places one to desire sink, and this side blown type radiating module comprises at least: a housing has an exhaust outlet and a tongue; And a blade structure, be arranged in this housing; Wherein a wind inlet is provided by this desire sink, and this wind inlet is in having a breach in abutting connection with this tongue place.

Wherein the shell of this desire sink is provided with the wind inlet of this side blown type radiating module.

First embodiment of the invention is the side-blowing fan explanation that comprises centrifugal fan with.Side-blowing fan of the present invention comprises a fan frame and a blade structure.Wherein this blade structure is formed in this fan groove that frame limited and forms the runner of an air-flow.This runner be meant gas by wind inlet to exhaust outlet the path of process.The shape of this blade structure and indefinite, a centrifugal blade structure for example, it comprises a wheel hub, a base plate and a plurality of blade that is formed on the base plate.

This fan frame also has a wind inlet and an exhaust outlet.Perhaps this fan frame optionally is made of a pedestal and a loam cake.This loam cake has a wind inlet and this pedestal has an exhaust outlet.It should be noted that wind inlet of the present invention is provided with a breach near the tongue of fan frame, and this breach extends towards exhaust outlet, so can make the profile of wind inlet that part (in abutting connection with the tongue place) is arranged is not circular-arc for circular-arc remaining part.The purpose of above-mentioned breach is to be used for the dissipation counter-current flow in the present invention, so that air output more on average reaches the enhancement radiating effect.Can learn that according to measurement result the present invention has increased more than 20% at least than the air output of unidimensional existing side-blowing fan (the wind inlet profile is for circular).So the present invention can reach same air output by lower rotating speed, i.e. the present invention also reduces noise.

The second embodiment of the present invention is one to comprise the side blown type radiating module of blade structure (naked fan).This side blown type radiating module adjacency one is wanted sink and is provided with, and for example this side blown type radiating module is arranged at the side of a central processing unit (CPU).The second embodiment of the present invention comprises a housing and a blade structure.Wherein, this housing has an exhaust outlet and and is not circular wind inlet, and this housing optionally has a loam cake.

The shape of this blade structure and indefinite, for example an axial flow blade structure, centrifugal blade structure or a side blown type blade structure.This blade structure is a centrifugal flabellum in this embodiment, and it comprises a wheel hub, a base plate and a plurality of blade that is formed on the base plate.Wherein this blade structure is formed in this fan groove that frame limited and forms the runner of an air-flow.This runner also refer to gas by wind inlet to exhaust outlet the path of process.The axial admission air-flow that this blade will be parallel to blade structure be converted to along wheel hub radially away from air-flow after discharge.

With first embodiment similarly be, second embodiment also is provided with a breach in the tongue of housing, and this breach more extends and makes wind inlet part be arranged for circular towards exhaust outlet, near but the counter-current flow in this breach dissipation runner the tongue, make the counter-current flow can the interference intake air-flow or follow-up go out air-flow, so can make the exhaust outlet of exhaust outlet more on average reach air output increases.

This side blown type radiating module also has a heat conduction board, it is that a sidewall by housing extends the platform of wanting sink with carrying, for example central processing unit (CPU) want sink placed on it after can form adjacency with the side blown type radiating module, and this heat conduction board can absorb the heat energy of wanting sink.In addition, the exhaust outlet of this side blown type radiating module also is provided with a plurality of radiating fins.The heat conduction board of this side blown type radiating module has more a heat conductive tube, and it is adjacent to wants sink and be provided with, and extends to radiating fin by heat conduction board.This heat conductive tube guides to radiating fin in order to heat energy that will heat conduction board, so can brush by the air-flow that blade structure drove to make the heat energy dissipation of wanting sink.

Description of drawings

Fig. 1 is the exploded view of an existing side-blowing fan;

Fig. 2 is the decomposing schematic representation of the first embodiment of the present invention;

Fig. 3 is the schematic perspective view of the second embodiment of the present invention;

Fig. 4 is the decomposing schematic representation of the second embodiment of the present invention.

Specific embodiments

The invention provides a kind of side-blow heat radiator, the design of the special shape of its wind inlet can suppress in the runner to make the air output of exhaust outlet more on average promote heat dissipation in abutting connection with the adverse current at tongue place.It can be used but be not limited to general centrifugal fan, side-blowing fan and side blown type radiating module.Application of the present invention will further specify in following embodiment.

First embodiment

The first embodiment of the present invention comprises that with one the side-blowing fan of centrifugal fan describes.

See also Fig. 2 and Fig. 3, wherein Fig. 2 is the decomposing schematic representation of the first embodiment of the present invention; Fig. 3 is the schematic perspective view of the first embodiment of the present invention.Side-blowing fan of the present invention comprises a fan frame 100 and a blade structure 200.Wherein this blade structure 200 is to be formed in this fan groove 130 that frame 100 limited and to form the runner of an air-flow.This runner be meant gas by wind inlet to exhaust outlet the path of process.The shape of this blade structure 200 and indefinite, this blade structure 200 is a centrifugal blade structure in this embodiment, comprises a wheel hub 210, a base plate 220 and a plurality of blade 230 that is formed on the base plate.The axial charge air flow that this blade 230 will be parallel to blade structure 200 be converted to along wheel hub 210 radially away from air-flow after discharge.

Still see also Fig. 2 and Fig. 3, this fan frame 100 also has a wind inlet 110 and an exhaust outlet 120.Or say that this fan frame 100 optionally is made of a pedestal 100a and a loam cake 100b.This loam cake 100b has a wind inlet 110, and this pedestal 100a has an exhaust outlet 120.It should be noted that, wind inlet 110 of the present invention is provided with a breach 160 near the tongue 140 of fan frame 100, this breach 160 extends towards exhaust outlet 120, and so can make the profile of wind inlet 110 that part (in abutting connection with tongue 140 places) is arranged is not circular-arc for circular-arc remaining part.

Because rule of thumb or the isobaric distribution pattern (not shown) of experiment gained show that air-flow regular meeting adverse current is got back to wind inlet and with charge air flow or follow-uply go out air-flow and disturb mutually and reduce air output and make the air output inequality near the tongue 140 of fan frame 100.For this reason, the present invention is with above-mentioned this counter-current flow of breach 160 dissipations, so that air output more on average reaches the enhancement heat dissipation.Can learn that according to measurement result the present invention has increased more than 20% at least than the air output of unidimensional existing side-blowing fan (the wind inlet profile is for circular).So can reach same air output by lower rotating speed, represent that so also the present invention can reduce noise.

Of the present invention high-effect for illustrating, compare with a side-blowing fan of the present invention and an existing side-blown fan, can descend the parameter of tabulation one.

Table one

	The present invention	Existing
	The present invention	Existing	Rotating speed (rpm)	4000	4000
Qmax(CMM)	0.154	0.125	Rotating speed (rpm)	4000	4000

Can inference according to this table one, when the desirable same peak rate of flow Qmax of existing fan, its rotating speed must be increased to 4900rpm approximately.Therefore, the present invention can obtain a higher air output with lower rotating speed.

Second embodiment

The second embodiment of the present invention is one to comprise the side blown type radiating module of blade structure (naked fan).See also Fig. 4, this figure is the decomposing schematic representation of the second embodiment of the present invention.This side blown type radiating module adjacency one is wanted sink and is provided with, and for example this side blown type radiating module is arranged at the side of a central processing unit (CPU) (not shown).As shown in the figure, the second embodiment of the present invention comprises a housing 100 and a blade structure 200.Wherein, this housing 100 has an exhaust outlet 120 and and is not circular wind inlet 110, and this housing 100 optionally has a loam cake 100b, and the material of this housing 100 can be metal in this embodiment, for example aluminium, aluminum alloy or aluminum-magnesium alloy etc.

Still see also Fig. 4, the shape of this blade structure 200 and indefinite, for example an axial flow blade structure, centrifugal blade structure or a side blown type blade structure.This blade structure 200 is a centrifugal flabellum in this embodiment, and it comprises a wheel hub 210, a base plate 220 and a plurality of blade 230 that is formed on the base plate 220.Wherein this blade structure 200 is formed in this fan groove 130 that frame 100 limited and forms the runner of an air-flow.This runner refers to that gas is by the path of wind inlet 110 to 120 processes of exhaust outlet.The axial charge air flow that this blade 230 will be parallel to blade structure 200 be converted to along wheel hub 210 radially away from air-flow after discharge.

Still see also Fig. 4, with first embodiment similarly be, second embodiment also is provided with a breach 160 in the tongue 140 of housing 100, and this breach 160 also extends and makes wind inlet 110 part be arranged for circular towards exhaust outlet 120, near but the counter-current flow in these breach 160 dissipation runners the tongue 140, make the counter-current flow can the interference intake air-flow or follow-up go out air-flow, so can make the exhaust outlet of exhaust outlet 120 more on average reach air output increases.

Still see also Fig. 4, this side blown type radiating module has more a heat conduction board 500, it is that a sidewall by housing 100 extends the platform of wanting sink with carrying, for example central processing unit (CPU) want sink placed on it after can form adjacency with the side blown type radiating module, and this heat conduction board 500 can absorb the heat energy of wanting sink.In addition, the exhaust outlet 110 of this side blown type radiating module also is provided with a plurality of radiating fins 180, and the material of this radiating fin 180 can be metal in this embodiment, for example aluminium, aluminum alloy or aluminum-magnesium alloy etc.The heat conduction board 500 of this side blown type radiating module also has a heat conductive tube 170, and it is adjacent to wants the sink (not shown) and be provided with, and extends to radiating fin 180 by heat conduction board 500.This heat conductive tube 170 guides to radiating fin 180 in order to heat energy that will heat conduction board 500, so can brush by the air-flow that blade structure 200 is driven to make the heat energy dissipation of wanting sink.

It should be noted that, because side blown type radiating module of the present invention places one to desire sink so that it is brushed, so the part of shell that also can desire sink (a for example notebook computer) in the present invention is as the loam cake of last side blown type radiating module, and the wind inlet of this side blown type radiating module is located on this shell of desiring sink, this shell be provided with breach with the dissipation runner near the tongue counter-current flow.Or this wind inlet can be provided by desiring sink.

Abovely having disclosed the present invention in conjunction with preferred embodiment, is not in order to limit claim scope of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the following claim scope.

Claims

1. A side blowing heat dissipation device has a fan frame and a fan blade structure, the fan frame has an air inlet, an air outlet and a tongue, the side blowing heat dissipation device is characterized in that:

The air inlet has a gap adjacent to the tongue.

2. The side blowing heat dissipation device according to claim 1, wherein the notch extends toward the air outlet to eliminate backflow at the adjacent tongue in the flow channel.

3. The side blowing heat dissipation device according to claim 1, wherein the contour of the air inlet not located above the tongue is roughly arc-shaped.

4. The side blowing heat dissipation device according to claim 1, wherein the fan blade structure adopts a fan blade structure of a centrifugal fan.

5. The side blowing heat dissipation device according to claim 1, wherein the fan blade structure is formed in a groove of the fan frame.

6. The side-blowing heat dissipation device according to claim 1, wherein the fan blade and the groove of the fan frame define a flow path of air flow, and the flow path refers to the passage of gas from the air inlet to the air outlet path of.

7. The side-blowing heat dissipation device according to claim 1, which is disposed adjacent to a device to be dissipated.

8. The side-blown heat sink as claimed in claim 1, further comprising a heat conducting plate.

9. The side blowing heat dissipation device according to claim 1, wherein the air outlet is further provided with heat dissipation fins.

10. The side blowing heat dissipation device according to claim 9, further comprising a heat pipe disposed adjacent to the device to be dissipated, and used to guide the heat energy of the device to be dissipated to the fins.

11. A side-blown heat dissipation module placed in a heat dissipation device, the side-blown heat dissipation module at least includes:

an outer frame having an air outlet and a tongue; and

a fan blade structure located in the outer frame;

One of the air inlets is provided by the heat dissipation device, and the air inlet has a gap adjacent to the tongue.

12. The side-blown heat dissipation module according to claim 11, wherein the housing of the device to be dissipated is provided with an air inlet of the side-blown heat dissipation module.