CN2669374Y - Radiating device - Google Patents
Radiating device Download PDFInfo
- Publication number
- CN2669374Y CN2669374Y CNU2003201008756U CN200320100875U CN2669374Y CN 2669374 Y CN2669374 Y CN 2669374Y CN U2003201008756 U CNU2003201008756 U CN U2003201008756U CN 200320100875 U CN200320100875 U CN 200320100875U CN 2669374 Y CN2669374 Y CN 2669374Y
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- CN
- China
- Prior art keywords
- heat abstractor
- fin
- heat
- fan
- predetermined sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a radiating device which is suitable for electronic devices and especially for a notebook computer. The radiating device comprises a fan and a plurality of radiating fins. The radiating fins are arranged at the air outlet of the fan to make use of the airflow produced by the fan to remove the heat on the radiating fins. Wherein, each radiating fin is arranged according to the preset distance to make the airflow produced by the fan be discharged with a uniform speed. The better preset distance is approximately equal to C1 *1/(V<2>-1). Wherein, V is equal to the original airspeed at the corresponding position. C1 is a coefficient.
Description
Technical field
The utility model relates to a kind of heat abstractor, particularly relevant for a kind of radiator of notebook computer that improves radiating efficiency.
Background technology
Along with the high development of Information of Science and Technology and the application popularization of computer industry, portable apparatus, for example precision electronic device product such as notebook computer is used widely.The consideration of portability and practicality is pursued in the progress of making rapid progress in electronics technology simultaneously, and present portable electronic product on the market generally all trends towards making light, thin, short, little, to meet the life style of modern society.Wherein, notebook computer is exactly a very typical example, because it has the power of handling a large amount of digitisation information, and is subjected to liking and extensive use of society.
Because the improvement of the processing procedure of integrated circuit, and the requirement of integrate circuit function specification raise day by day, the design of integrated circuit now has been that exquisiteness very is with complicated.With central processing unit (CentralProcessing Unit; CPU) be example,, therefore cause the early stage significantly complexity of its circuit layout many because present user and various application software all have powerful demand to it.Though the integrated circuit (IC) wafer of these central processing units provides many strong functions, yet some new problems have also been produced.For example, result from the consumption of the huge electric energy that complex circuit design caused, and the electric energy of these consumption will cause the rising of chip temperature.Especially for portable apparatus, in response to the demand on carrying, casing inside can't have been reserved the space of enough free convection, and therefore, more shape is serious to make the problem that temperature rises.Inner and can't dissipate immediately the time when heat accumulation at casing, will cause the electronic component can't operate as normal, even whole computer system is shut down.So in order to make the maximum usefulness of notebook computer performance, it is very important that heat transmits fast.
Traditional computer radiating apparatus is for effectively getting rid of central processing unit (Central Processing Unit; CPU) heat that is produced, generally speaking, it uses the radiator fan of high wattage to make the air fin (Fin) of flowing through, and to carry out heat exchange, the heat that central processing unit is produced is effectively discharged computer.
Consult Fig. 1, Fig. 1 is a traditional heat-dissipating device and air outlet Velocity Profiles schematic diagram thereof.As shown in FIG., the traditional heat-dissipating device uses a fan 110 to make air flows, and carries out heat exchange via fin 120, so that the heat that central processing unit was produced is discharged notebook computer.But because the air velocity 130 of the air that the fan 110 of traditional heat-dissipating device is produced is had nothing in common with each other (representing with arrow length).When the lower that is positioned at air velocity 130,,,, make radiating efficiency thereby reduction with reducing the heat exchanger effectiveness of fin 120 because speed air flow is lower as A district among the figure.When the higher position that is positioned at air velocity 130, as B district among the figure, the fin 120 because air is flowed through fast, but also therefore be easy to generate noise.
How can effectively improve the radiating efficiency of heat abstractor, and simultaneously can reduce the noise that heat abstractor produces, for notebook computer producer and user looked forward to.
The utility model content
In view of above-mentioned background of invention, known heat abstractor makes in the lower position of the air velocity of fan outlet, because of the reduction of rate of heat exchange, so that the radiating efficiency of heat abstractor thereby reduction because the air velocity that fan produced is also inhomogeneous.In the higher position of the air velocity of fan outlet, then easily because air is flowed through the speed of fin very fast, and produce noise.How to improve the radiating efficiency of heat abstractor and reduce the noise that it produces, will help to provide user one comfortable operating environment, and help to reduce the energy of the required consumption of heat abstractor.
One of the purpose of this utility model provides a kind of heat abstractor, and this heat abstractor has uniform airflow speed, with effective raising radiating efficiency.
Another purpose of the present utility model provides a kind of heat abstractor, and this heat abstractor has uniform airflow speed, to effectively reduce the noise that heat abstractor is produced.
According to above-described purpose, the utility model provides a kind of heat abstractor.This heat abstractor includes a fan and a plurality of fin.Fin is installed on the air outlet of fan, with the heat on the fin, discharges heat abstractor via the air-flow that fan produced, and then discharges and use electronic equipment of the present utility model.Particularly the heat that the notebook computer central processing unit is produced when the computing is discharged notebook computer.
Wherein the spacing between each fin is all arranged according to predetermined spacing, so that the air-flow that fan produced is got rid of above-mentioned heat with an even velocity.And each predetermined spacing is to decide in the original air velocity that an opposite position of fin is produced according to fan.Preferable predetermined spacing approximates C
1* 1/ (V
2-1), wherein V is the original air velocity of opposite position, and C
1It is a coefficient.
Heat abstractor of the present utility model utilize to be adjusted the spacing of fin, makes the air velocity of air outlet of fan more even.Not only can reduce the required maximum speed of fan, and improve radiating efficiency simultaneously, make the power thereby the reduction of the required consumption of heat abstractor, the noise that also reduces heat abstractor simultaneously and produced.
For above-mentioned and other purposes of the present utility model, feature and advantage can be become apparent,, and do in conjunction with the accompanying drawings and be described in more detail especially exemplified by preferred embodiment.
Description of drawings
Fig. 1 is the Velocity Profiles schematic diagram of known radiator of notebook computer and its air outlet; And
Fig. 2 is a preferred embodiment of heat abstractor of the present utility model and the Velocity Profiles schematic diagram of its air outlet.
The reference numeral explanation:
110 fans, 120 fin
130 air velocities
210 fans, 220 fin
230 air velocities, 240 spacings
Embodiment
The utility model is a kind of heat abstractor, not only can effectively improve radiating efficiency and reduce the noise of heat abstractor simultaneously.Describe spirit of the present utility model in detail below with reference to accompanying drawing, as person skilled in the art person after understanding preferred embodiment of the present utility model, the technology that should instruct by the utility model, change and modification, it does not break away from spirit of the present utility model and scope.
Fig. 2 is heat abstractor of the present utility model and air outlet Velocity Profiles schematic diagram thereof.As shown in FIG., heat abstractor of the present utility model can effectively make the air velocity 230 of air outlet form distribution uniformly.The spacing 240 of fin 220 is adjusted in heat abstractor utilization wherein of the present utility model, makes through behind the fin 220, to form uniform airflow speed 230 by the air-flow that fan 210 is produced.As A ' among the figure and B ' district, correspond to A district and B zone position among Fig. 1, heat abstractor of the present utility model significantly provides a comparatively uniform speed air flow.Therefore, compare with known heat abstractor, heat abstractor of the present utility model has uniform airflow speed 230, not only can effectively eliminate because the noise that very fast air velocity is produced more can be eliminated because the problem that the rate of heat exchange that is produced than low-flow speed reduces.Heat abstractor of the present utility model utilizes uniform airflow speed 230, the improved efficiency that makes heat exchange, also reduced the problem of noise, so that utilize the equipment such as notebook computer of heat abstractor of the present utility model, can effectively reduce the loss of energy, and improve the stability of notebook computer work.
Below will describe in detail, and how make the air outlet air velocity 230 of heat abstractor of the present utility model obtain an even flow.At first, utilize a formula that has developed stream (Developed Flow) loss of flood peak principle, cross the required spacing of fin 240 with the derivation air communication.This loss of flood peak formula is:
H=f * L * V
2/ (Dh * 2g) ... (formula 1)
F wherein: coefficient of friction (Friction Factor)
L: flow path features length (leaf length)
V: gas flow rate
G: acceleration of gravity
Dh: water conservancy diameter (runner basal area/wetted length of four times; 4A/P)
Above-mentioned runner basal area promptly equals (sheet spacing) * (sheet height), and wetted length promptly equals 2 times (sheet spacing+sheet height).
And because f, g are all definite value (Constant), so it is assumed to 1.In addition required sheet spacing is represented with a, and be example with the groups of fins of even height and equal length, thus the height of each fin can be assumed to be 1, and leaf length L also is assumed to be 1.Wherein, above-mentioned runner basal area can be reduced to a * 1, and wetted length can be reduced to 2 * (a+1).Bring sheet spacing a and sheet height 1 and width 1 into, can be through the formula 1 after simplifying:
H＝V
2/(4(a×1)/(2×(a+1))×2×1)
Wherein the loss of flood peak of H representative is a design definite value, and with 1 substitution, the relational expression that can get between sheet spacing a and the flow velocity is as follows:
A=C
1* 1/ (V
2-1) ... (formula 2)
C wherein
1Be a coefficient, with the relation of equation of equilibrium 2 the right and lefts.
Suppose a=1mm and the V=2.5m/s heat exchange design desired value of heat abstractor for this reason.Carry it in the formula 2, can get C
1Approximate 1 * (2.5
2-1), so is about 5.25.That is to say when V=5m/s, can get a and approximate 0.22mm.So can get heat abstractor required sheet spacing under any air velocity via the calculating of formula 2.So can obtain preferable sheet spacing, and obtain than uniform airflow speed.
When carrying out the heat abstractor design, at first measure fan when not revising the spacing of fin as yet, the original air velocity that is produced.Then, the original air velocity of each position is brought in the formula 2, to obtain the calculated value of corresponding preferable spacing, then according to these calculated value trim tab spacings.
Heat abstractor of the present utility model after the trim tab spacing is owing to have equally distributed air velocity, so make and the position of higher air velocity can obtain to reduce, and in the position of soft low-flow speed, can obtain raising.The noise that higher air velocity produced so heat abstractor of the present utility model can reduce, and then improve the environment of notebook computer operation makes the user to work in than comfortable environment one.Heat abstractor of the present utility model can also reduce the loss of the rate of heat exchange that is caused than low-flow speed, and then improves the radiating efficiency of heat abstractor of the present utility model.
Heat abstractor of the present utility model, do not limit the heat radiation that is used in notebook computer, can be appropriate to use in the electronic equipment that will dispel the heat of what is the need in office yet, a uniform radiating airflow speed is provided, the noise that heat abstractor is produced can thereby reduce, and improves rate of heat exchange.And calculate via above-mentioned formula, the utility model more can use the design at the fin of differing heights, width and length, and it does not all break away from spirit of the present utility model and scope.
As be familiar with the present technique personnel understand, the above is preferred embodiment of the present utility model only, is not in order to limit claim of the present utility model.All other do not break away from the equivalence of being finished under the spirit that the utility model discloses and changes or modify, and all should be included in claims scope of the application.
Claims (16)
1. heat abstractor, it is characterized in that comprising at least: one has the fan of an air outlet; And a plurality of fin, described a plurality of fin is installed in described air outlet, with with the heat on the described fin, via the air-flow that described fan produced heat is discharged described heat abstractor, wherein each described fin has a leaf length and a slice height, and each of these fin is according to a predetermined sheet spacing arrangement, and the described air-flow that described fan is produced forms an equally distributed air velocity.
2. heat abstractor as claimed in claim 1 is characterized in that: each above-mentioned predetermined sheet spacing is an original air velocity decision that is produced at an opposite position of described fin according to described fan.
3. heat abstractor as claimed in claim 2 is characterized in that: each above-mentioned predetermined sheet spacing is all different.
4. heat abstractor as claimed in claim 1 is characterized in that: above-mentioned predetermined sheet spacing meets loss of flood peak formula: a H=f * L * V
2/ (Dh * 2g), wherein, H designs definite value for the loss of flood peak, f is a coefficient of friction, and L is described leaf length, and V is described gas flow rate, g is an acceleration of gravity, and Dh is that (four times described spacing * described height) is divided by (2 times (described spacing+described height)).
5. heat abstractor as claimed in claim 4 is characterized in that: H, f, g, L and described highly all are made as 1, simplifying described loss of flood peak formula, above-mentioned predetermined sheet spacing a approximately with 1/ (V
2-1) be directly proportional, and V is the described original air velocity for described opposite position.
6. the heat abstractor of an electronic equipment is characterized in that: described heat abstractor is used for heat that a thermal source with described electronic equipment produced by getting rid of in the described electronic equipment, and described heat abstractor comprises at least:
One has the fan of an air outlet; And
A plurality of fin, described a plurality of fin is installed on described air outlet, receive described heat by described thermal source, via air-flow that described fan produced with described heat, discharge described electronic equipment, wherein each described fin has a leaf length and a slice height, and each described fin is according to a predetermined sheet spacing arrangement, and the described air-flow that described fan is produced forms an equally distributed air velocity.
7. the heat abstractor with electronic equipment as claimed in claim 6 is characterized in that: each above-mentioned predetermined sheet spacing is an original air velocity decision that is produced at an opposite position of described fin according to described fan.
8. the heat abstractor of electronic equipment as claimed in claim 7 is characterized in that: each above-mentioned predetermined sheet spacing is all different.
9. the heat abstractor of electronic equipment as claimed in claim 6 is characterized in that: above-mentioned predetermined sheet spacing meets loss of flood peak formula: a H=f * L * V
2/ (Dh * 2g), wherein, H designs definite value for the loss of flood peak, f is a coefficient of friction, and L is described leaf length, and V is described gas flow rate, g is an acceleration of gravity, and Dh is that (four times described spacing * described height) is divided by (2 times (described spacing+described height)).
10. the heat abstractor of electronic equipment as claimed in claim 9 is characterized in that: H, f, g, L and described highly all are made as 1, simplifying described loss of flood peak formula, above-mentioned predetermined sheet spacing approximately with 1/ (V
2-1) be directly proportional, and V is the described original air velocity for described opposite position.
11. the heat abstractor of electronic equipment as claimed in claim 6 is characterized in that: above-mentioned thermal source is the central processing unit for described notebook computer.
12. the notebook computer with heat abstractor is characterized in that: comprise at least:
One central processing unit, described central processing unit produces heat because of being used for carrying out computing; And
One heat abstractor, the described heat abstractor described central processing unit that is coupled, with described heat by getting rid of in the described notebook computer, wherein said heat abstractor also comprises:
One has the fan of an air outlet; And
A plurality of fin, described a plurality of fin is installed on described air outlet, and receive the described heat that described central processing unit produces, via the air-flow that described fan produced described heat is discharged described notebook computer, wherein each described fin has a leaf length and a slice height, and each of these fin is according to a predetermined sheet spacing arrangement, and the described air-flow that described fan is produced forms an equally distributed air velocity.
13. the notebook computer with heat abstractor as claimed in claim 12 is characterized in that: the above-mentioned predetermined sheet spacing of each of described heat abstractor is an original air velocity decision that is produced at an opposite position of more described fin according to described fan.
14. the notebook computer with heat abstractor as claimed in claim 13 is characterized in that: each above-mentioned predetermined sheet spacing of described heat abstractor is all different.
15. the notebook computer with heat abstractor as claimed in claim 12 is characterized in that: the predetermined sheet spacing of described heat abstractor meets loss of flood peak formula: a H=f * L * V
2/ (Dh * 2g), wherein, H designs definite value for the loss of flood peak, f is a coefficient of friction, and L is described leaf length, and V is described gas flow rate, g is an acceleration of gravity, and Dh is that (four times described spacing * described height) is divided by ((described spacing+described height) of 2 times.
16. the notebook computer with heat abstractor as claimed in claim 15 is characterized in that: H, f, g, L and described highly all are made as 1, simplifying described loss of flood peak formula, above-mentioned predetermined sheet spacing approximately with 1/ (V
2-1) be directly proportional, and V is the described original air velocity of described position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201008756U CN2669374Y (en) | 2003-10-27 | 2003-10-27 | Radiating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201008756U CN2669374Y (en) | 2003-10-27 | 2003-10-27 | Radiating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669374Y true CN2669374Y (en) | 2005-01-05 |
Family
ID=34438504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201008756U Expired - Lifetime CN2669374Y (en) | 2003-10-27 | 2003-10-27 | Radiating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669374Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115367B (en) * | 2006-07-28 | 2010-05-26 | 富准精密工业(深圳)有限公司 | Heat radiating device |
| CN110366357A (en) * | 2019-07-17 | 2019-10-22 | 中车株洲电力机车有限公司 | A kind of power supply heat sinking device and its control method for vehicle |
-
2003
- 2003-10-27 CN CNU2003201008756U patent/CN2669374Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115367B (en) * | 2006-07-28 | 2010-05-26 | 富准精密工业(深圳)有限公司 | Heat radiating device |
| CN110366357A (en) * | 2019-07-17 | 2019-10-22 | 中车株洲电力机车有限公司 | A kind of power supply heat sinking device and its control method for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131027 Granted publication date: 20050105 |