CN2473667Y

CN2473667Y - Non-balance radiation fin

Info

Publication number: CN2473667Y
Application number: CN 01200116
Authority: CN
Inventors: 林世仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-01-08
Filing date: 2001-01-08
Publication date: 2002-01-23
Anticipated expiration: 2011-01-08

Abstract

The utility model discloses an unbalance heat dissipation fin plate. The bottom of the heat dissipation is upwards standing with plurality of fin plates with wave shape, and the bottom is a flat contact surface. The external side surface of the heat dissipation is provided with a clamping part extending outwards, and the internal side surface is convex provided with a bearing part. The bottom of the heat dissipation plate is pasted with a central micro-processor or other hot object surface. When the heat resource enters from the contact surface and is send quickly towards the fin plate, the upper part of a fan rotates the cold wind and blows from the upper part of the heat dissipation. At this time, the fin plate receives the balance cold wind to make the hot wind send from a dissipation channel between the fin plates to the surrounding and the lower part after the heat dissipation, and make the cold wind blown by the fan take with a better change and a dissipation density. The utility model uses the one-body formation design to achieve the reducing of the producing cost and the good heat dissipation efficiency.

Description

Uneven radiating fin

The utility model relates to a kind of heat abstractor, relates in particular to a kind of shape and arrangement of radiating fin of heat abstractor of central processing unit, and to reach low cost of manufacture, radiating effect is better.

More powerful and the also raising rapidly of its speed of computer calculation function now, and its global shape, structure reaches with the motherboard connected mode breaks through traditional mode especially, it is the major reform of computer industry, fast calculation function more because central processing unit of new generation has been carried under one's arms, the temperature that also makes central processing unit be produced when handling operational order is higher, so how to utilize good cooling system to make central processing unit operate as normal under the temperature that it allowed, become the very important problem in this area, and because of the universalness of computer, its heat radiator is radiating efficiency and the manufacturing cost that reaches preferable, just must allow the fin of heat radiator do one and change and cost is reduced, the person's that just can be subjected to widely applying the computer welcome.

Referring to shown in Figure 6, main body external structure for heat radiator commonly used, the fin that plural number is arranged is upwards stood in its heat radiation by the bottom substrate, and the arrangement mode of fin is for being an even curface, and fan is installed in smooth upper surface, yet when fan rotates transmission cold wind, its cooling air is to blow with spiral and mode down, and heat radiator commonly used is smooth design because of the upper surface of its fin, so fan rotates the cooling air that is produced can be because of the contour influence of fin, cause cooling air to clash into mutually with constant speed and concentrate on the centre of heat radiator, the central authorities that make heat hoard at heat radiator cause the not good shortcoming of radiating efficiency.

The purpose of this utility model is: design a kind of structure of improving the radiating fin radiating efficiency, and can save manufacturing cost, and changing plate radiating plate into uneven radiating fin, this wavy fin blows cooling air by fan from top, form an even convection effects, reach the good heat radiating purpose.

The another purpose of the utility model for be convexly equipped with at the inner surface of heat radiator a supporting part set up fan with at heat radiator as the heat radiation in blowing or the air draught.

The utility model purpose again is provided with plural groove to increase the use to fluid space and area of dissipation of cooling air for cuing open at heat radiator.

The utility model is achieved in that the bottom of heat radiator upwards stands and has plural number to arrange downward back by both sides gradually with equidistant approximately circular arc also up to be wavy fin to what central authorities brought together, the heat radiator bottom is that smooth surface of contact and its top is to protrude out the fin that many rows are wavy arrangement, at the outside oblique blocking part that is extended with of the both side surface of heat radiator, be convexly equipped with a supporting part at inner surface, heat radiator cuts open to be established plural fin and is longitudinal groove, promptly cross-shaped.Fan is placed on the supporting part, and a U type elastic body is located in the blocking part, and the buckling parts of elastic body both sides stretches out outside the blocking part, and the buckling end of buckling parts is fastened in the screw of fan, and the heat dissipation channel of radiating fin central authorities is projection, and by both sides declivity gradually.Fan is directly over heat radiator, and the bottom surface of contact of heat radiator is affixed on circuit board central processing unit upper surface.

The utility model is compared with prior art, and the good effect that has is:

1, owing to the waveform fin of design, this is a kind of uneven radiating fin of effective saving manufacturing cost.Learn through test of many times, compare with flat heat radiator, under same temperature conditions, utilize the fan of 60 * 60 * 25 specifications, the radiating efficiency that cooling air is blowed to heat radiator commonly used behind the heat radiator with the rotating speed of 4200RPM be 0.48 (℃/W) and the utility model radiating efficiency be 0.42 (℃/W).

Know thus and can improve radiating efficiency and make cooling air convection current equilibrium simultaneously.

2, because fan blows cooling air from top, form a uniform convection effects, save manufacturing cost and the good effect of thermal diffusivity to reach.

3, because being convexly equipped with a supporting part, the heat radiator inner surface sets up that fan can be used as heat radiator blowing or air draught is used.

4, since heat radiator cut open and be provided with plural groove, so increased cooling air to fluid space and area of dissipation.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:

Fig. 1 is a three-dimensional combination synoptic diagram of the present utility model;

Fig. 2 is a perspective view of the present utility model;

Fig. 3 is a lateral plan of the present utility model;

Fig. 4 is a wind speed flow graph of the present utility model;

Fig. 5 is a troposphere of the present utility model wind rose;

Fig. 6 is the structural drawing of heat radiator commonly used.

As shown in Figure 1, 2, the bottom of heat radiator 1 is a smooth surface of contact 11, and its top is to protrude out the fins 12 that many rows are wavy arrangement, and the both side surface 13 outside oblique blocking parts 131 that are extended with of heat radiator 1 are convexly equipped with a supporting part 132 at inner surface.Cut open at heat radiator 1 and to establish plural fin 12 and be groove 14 longitudinally, fan 2 is contained on the supporting part 132, one U type elastic body 3 is located in the blocking part 131, the buckling parts 31 of elastic body 3 both sides stretches out outside the blocking part 131, the buckling end 311 of buckling parts 13 is fastened in the screw 21 of fan 2, fan 2 is directly over heat radiator 1, and the surface of contact 11 of heat radiator 1 bottom is attached to the surface on the central processing unit 41 of circuit board 4.

As Fig. 3,4, shown in 5, after the high heat that central processing unit 41 produces when action is entered by heat radiator 1 bottom surface of contact 11, promptly fast the fin 12 of thermal source towards the top transmitted, fin 12 be by both sides with equidistant approximately circular arc arrangement gradually downwards after, upwards bring together again toward central authorities, and the cooling air that fan 2 is produced is to be sent to fin 12 in spiral mode down in a clockwise direction, and cause when cooling air when fin 12 is blown into, if being when upwards circular arc is arranged, fin 12 becomes big because of holding the wind face, then can form one high wind A, otherwise when fin 12 is down arranged, holding the wind face can diminish, and then can form one gentle breeze B, and by the bump of high wind A and gentle breeze B generation variable speed the hot-fluid that is accumulated in the heat radiator 1 is overflowed fast, fin 12 by both sides with equidistant approximately circular arc arrangement gradually downwards after, upwards bring together again toward central authorities.Be formed with the heat dissipation channel 121 that the favourable cooling air of speed that the troposphere C of plural number also can accelerate convection current can enter 12 of fins once more fast, and the hot blast after the heat radiation promptly forms actual user mode of the present utility model also by fin 12 and troposphere C and then around being distributed to and place, below.

Design for heat radiator, only needing that when producing whole piece is squeezed type heat radiator 1 directly uses specification work one to cut according to reality, can be useful in the different size size uses, because of utilizing an integral body, heat radiator 1 extrudes shaping, make heat radiator when cutting different size, do not need to change the change that it constitutes shape, and fan 2 blows cold wind when heat radiator 1 cools off, hot blast after the heat radiation is distributed to all around and the place, below via groove 14 and heat dissipation channel 121, hot blast is effectively got rid of fast from heat radiator 1, and can dispel the heat to the electronic component on the circuit board 4 simultaneously, by on know that this is novel not to need separately the die sinking tool to be engaged in the production different size, the heat radiator 1 of size uses and can reach the saving manufacturing cost, and thermal diffusivity is good and have a good convection effects.

Claims

1, a kind of uneven radiating fin is characterized in that: form a smooth surface of contact in heat radiator bottom, and upwards stand the wavy fin that plural number is arranged downward back gradually and up brought together to central authorities with equidistant approximately circular arc by both sides by the bottom.

2, radiating fin according to claim 1 is characterized in that: the top of described heat radiator is provided with fan.

3, radiating fin according to claim 1 is characterized in that: the side surface of described heat radiator is inboard for being convexly equipped with a supporting part.

4, radiating fin according to claim 1 is characterized in that: described heat radiator cuts open and is provided with plural number and the cross-shaped groove of fin.

5, radiating fin according to claim 1 is characterized in that: described heat radiator is in central heat sink passage projection comparatively, and by both sides declivity gradually.