CN1474061A

CN1474061A - Heat radiator with unpowered fan

Info

Publication number: CN1474061A
Application number: CNA021277168A
Authority: CN
Inventors: 李仁翔
Original assignee: Quanta Computer Inc
Current assignee: Quanta Computer Inc
Priority date: 2002-08-08
Filing date: 2002-08-08
Publication date: 2004-02-11
Anticipated expiration: 2022-08-08
Also published as: CN1206455C

Abstract

The heat dissipating device includes one exhaust port one side of the computer unit; one heat gradient maintaining unit providing one heat flow path between the heat source and the exhaust port and maintaining one temperature difference between the heat source and the exhaust port; one unpowered fan with several blades in the heat flow path. The unpowered fan rotates on the heat convection between the heat source and the exhaust port with relatively low temperature and the rotating fan strengthens the air disturbance to speed the dissipation of heat and decrease heat of the heat source.

Description

Sink with unpowered fan

Technical field

The present invention relates to a kind of computer radiating apparatus, particularly relate to a kind of sink of unpowered fan.

Background technique

The research and development of computer heat radiation prior art now often focus on that the prolongation in each computer components working life itself and the efficient of sink strengthen, and but ignore the influence for the computer components life-span in the sink life-span itself.When existing fan heat sink damaged, the necessary heat sinking function in original computer apparatus just can't carry out fully, and impels the critical elements of computer to suffer damage because of dispelling the heat.Even the life-span of computer components itself does not finish as yet, but can't execute script heat radiation work because of knowing existing fan heat sink in the very first time, and cause fan heat sink on fixed position originally, to hinder the heat sinking function of computer components oneself nature itself, thereby impel computer components end-of-life more in advance, cause the waste on the computer components resource.

The conventional fan sink all need be supplied electric power, just can drive its motor and drive the flabellum rotation, if strengthen its heat radiation function, and heat dissipation is improved, then the rotating speed of motor must speed, make that the rotating speed of motor is higher, motor rotary speed is in to run up down, can cause each other the harmful effect that rubs, consumes to the part in motor itself or the fan body easily, and then impairment motor life, in addition, the heat that system produced also can speed with the rotating speed of motor and relatively increases, and then radiating effect is had a greatly reduced quality.If motor reaches the limit of working life, reach under the situation of damage, even other elements still can operate in the computer, but computer still can badly influence the working life of computer because of the deficiency of dispelling the heat causes whole damage.So, become computer a crucial factor in working life the working life of fan on the contrary, how the fan of a longer service life is provided, be a big problem in fact.

And as Fig. 1, this is the solid combination schematic representation of existing central processing unit (CPU) fan heat sink; Fig. 2 is then for having the perspective exploded view of central processing unit (CPU) 3 fan heat sinks now.Fan 5 utilizes buckling member 51 and trip 21 to be fixed in central processing unit (CPU) 3 and heat-conducting block 4 tops, and will blow on the heat-conducting block 4 than cool air with the air-flow that radiation fan 5 is produced, and makes it to be forced to heat radiation.And because of in the prior art, there is no complete design and the heat energy that increases in the air can be guided out computer system inside, the temperature fast rise that causes internal system, and comply with " thermodynamic (al) thermal gradient principle ", its radiating efficiency will reduce because of the thermal gradient of computer system inside, and with increasing progressively service time and successively decrease.Therefore, even strengthen the revolution of radiation fan 5 or improve heat-conducting block 4 or set radiating fin 44 it on, also can't be with the thermal gradient increase to avoid this warm up phenomenon; On the contrary may be because the rotating speed of radiation fan 5 increase and 5 life-spans of radiation fan are shortened, it is overheated to continue accumulation to the heat energy of central processing unit (CPU) 3 eventually, causes computer that deadlock or the unsettled phenomenon of system are often arranged then, even program and data have the problem of damage.

Summary of the invention

The object of the present invention is to provide a kind of sink, to address the above problem with unpowered fan.

The object of the present invention is achieved like this, and a kind of sink with unpowered fan promptly is provided, and is applicable to a computer system, and this computer system has a thermal source, and it comprises: an exhaust outlet, be located on the side of this computer system; One thermal gradient is kept equipment, between this thermal source and this exhaust outlet a heat flow path is arranged, and provides and keep a temperature difference of this thermal source and this exhaust outlet; And a unpowered fan, have a plurality of flabellums, be set up on this heat flow path.

In view of the many disadvantages on the structural design of above-mentioned existing fan heat sink, invention proposes a kind of sink with unpowered fan, makes no longer be decided by motor itself working life of fan, therefore prolongs the working life of fan greatly.Specifically, being the high temperature that utilizes a thermal source can produce thermoconvection with respect to the low temperature of an exhaust outlet, and then make and be positioned at that at least one unpowered fan rotates between this thermal source and this exhaust outlet, and then the disturbance between the generation air, hot air is no longer concentrated in this thermal source place makes this thermal source not stop to heat, but can fly away everywhere, reduce the heat energy of this thermal source periphery then rapidly.And causing disturbance between air by this each unpowered fan, the hot air around being scattered in just can flow to this exhaust outlet fast fifty-fifty, produces fabulous cooling-down effect.And set up the equipment (not shown) that can increase thermal gradient in the computer system outlet port, make thermal gradient can not increase and not reduce because of the computer system running time.

So solve the restriction of existing fan radiating structure heat radiation function, problem with existing computer fan construction for heat radiating device age limit, disturbance by the unpowered fan generation, hot air can be flown away everywhere, then reduce the heat energy of this thermal source periphery rapidly, and be circulated to the exhaust outlet place swimmingly, near the unlikely generation hot air situation thermal source of being retarded by silt; Can ceaselessly thermal gradient be maintained at certain degree owing to increase the equipment of thermal gradient simultaneously, thermoconvection can ceaselessly impel unpowered fan to rotate, and radiating effect can remain on the optimum state.

Description of drawings

Fig. 1 is the three-dimensional combination figure of prior art central processing unit (CPU) fan heat sink;

Fig. 2 is the three-dimensional exploded view of prior art central processing unit (CPU) fan heat sink;

Fig. 3 is the three-dimensional combination figure of central processing unit (CPU) unpowered fan sink of the present invention;

Fig. 4 A and Fig. 4 B are the theoretical schematic representation of central processing unit (CPU) unpowered fan sink of the present invention.

Embodiment

The computer radiating apparatus of a kind of unpowered fan of the present invention and method, as Fig. 3, a unpowered fan 50 is fixed on the

radiating fin

40, and 40 of this radiating fins are fixed on the central processing unit (CPU) 30.Shown in Fig. 4 A, when fan does not rotate, the hot air that central processing unit (CPU) 30 is produced can move (as arrow among the figure) with extremely slow speed, but still be to concentrate in central processing unit (CPU) 30 peripheries, but because of the high temperature of central processing unit (CPU) 30 has certain temperature difference with respect to the low temperature of an exhaust outlet 60, so the generation thermoconvection is arranged.After producing enough thermoconvections, just make that being positioned between central processing unit (CPU) 30 and this exhaust outlet 60 unpowered fan 50 rotates, the disturbance of air is generation strongly thereupon, as Fig. 4 B.At this moment, just hot air no longer concentrate cause in central processing unit (CPU) 30 places central processing unit (CPU) 30 do not stop heat, fly away (as arrow among the figure) but can be situated between everywhere by the rotation of unpowered fan 50, reduce the heat energy of central processing unit (CPU) 30 peripheries then rapidly.And by the disturbance that unpowered fan 50 causes, the hot air around being scattered in just can be fast and is flowed to this exhaust outlet 60 fifty-fifty, produces splendid cooling-down effect.More owing to setting up the cooling system (not shown) of keeping certain thermal gradient, so radiating effect can maintain certain level at exhaust outlet place 60.

And the selected very slim and graceful plastic material of material of the flabellum of unpowered fan, and this thermal source can be a hard disk, a CD-ROM drive, a memory bank or a power supply unit.

Because of unpowered fan does not have as the restriction on the existing fan life, the life-span of each computer components can be reached to its MaLS, and in a single day damage, by the life-span that must have influence on computer components unlike existing fan.Certainly, because increasing thermal gradient can adjust with the need voluntarily with the equipment of maintaining heat convection current, and can recognize easily that this increases the yield of thermal gradient equipment, need not naturally to worry so the life span that increases thermal gradient equipment can influence to some extent to the computer components life-span.

More because the heat dissipating method that the present invention uses is " unpowered fan ", so just do not need to expend power equipment that starts fan and the cumbersome procedure that it is assembled on the fan, the program of assembling is simply many naturally; And because of power equipment need not use, the cost of power equipment reduces naturally significantly, thereby product cost is significantly lowered, and then usability on the increase industry and progressive.

Claims

1. the sink with unpowered fan is applicable to a computer system, and this computer system has a thermal source, and it comprises:

One exhaust outlet is located on the side of this computer system;

One thermal gradient is kept equipment, between this thermal source and this exhaust outlet a heat flow path is arranged, and provides and keep a temperature difference of this thermal source and this exhaust outlet; And

One unpowered fan has a plurality of flabellums, is set up on this heat flow path.

2. the sink with unpowered fan as claimed in claim 1, wherein this unpowered fan is set up in by this thermal source.

3. the sink with unpowered fan as claimed in claim 1, wherein this thermal gradient is kept equipment frame and is located at this exhaust outlet place.

4. the sink with unpowered fan as claimed in claim 1, wherein this unpowered fan is the thermoconvection rotation by the temperature difference generation at this thermal source and this exhaust outlet place.

5. the sink with unpowered fan as claimed in claim 1, wherein this thermal gradient is kept equipment the temperature difference between this thermal source and this exhaust outlet is maintained between 30～50 ℃, continues to rotate to keep this unpowered fan.

6. the sink with unpowered fan as claimed in claim 1, wherein this unpowered fan rotation can cause the disturbance between air, make to concentrate and to accelerate to flow to the low part of other temperature, the heat energy of this thermal source periphery itself is remained under certain state of temperature in the heat energy of this thermal source periphery itself.

7. the sink with unpowered fan as claimed in claim 1, wherein this thermal source is a central processing unit (CPU).

8. the sink with unpowered fan as claimed in claim 1, wherein this thermal source is a hard disk.

9. the sink with unpowered fan as claimed in claim 1, wherein this thermal source is a CD-ROM drive.

10. the sink with unpowered fan as claimed in claim 1, wherein this thermal source is a storage.

11. the sink with unpowered fan as claimed in claim 1, wherein this thermal source is a power supply unit.

12. the sink with unpowered fan as claimed in claim 1, wherein the flabellum material of this unpowered fan is plastics.

13. the sink with unpowered fan as claimed in claim 1, wherein this equipment of keeping thermal gradient is a cooler.