CN1566887A

CN1566887A - Combining method for heat pipes and radiating fins

Info

Publication number: CN1566887A
Application number: CN 03126902
Authority: CN
Inventors: 李学坤; 陈俊吉; 吴宜强
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2003-06-14
Filing date: 2003-06-14
Publication date: 2005-01-19

Abstract

The invention provides a combining method for a heat pipe and a radiating fin. A threading hole is arranged on radiating fin body. At fringe of the threading hole is arranged an edgefold with a notch. The radiating fin is used to thread the heat pipe through the threading hole, and heatconducting tin paste is smeared at the notch. Then combination of the radiating fin and the heat pipe is placed in high temperature environment to be heated, and is divorced from the high temperature environment. The radiating fin and the heat pipe will be welded together after cooling.

Description

The associated methods of heat pipe and radiating fin

[technical field]

The invention relates to the associated methods of a kind of heat pipe and radiating fin, be meant a kind of tin cream that utilizes especially, the method that heat pipe and radiating fin are evenly combined closely.

[background technology]

Computer has become the indispensable instrument of all conglomeraties, follow improving constantly to its demand, computer industry obtains fast and significant progress, and computing power depends on central processing unit to a great extent, its speed and stability directly influence machine performance, the integrated level of central processing unit is high more, the speed of service is fast more, follow the heat of its generation then big more, if the untimely heat radiation of heat is gone out, cause accumulation of heat that its temperature is raise, will influence the stability of its operation greatly, therefore, the heat that central processing unit produces in time must be dispelled the heat away, industry installs a radiator auxiliary heat dissipation usually additional on its surface.

As shown in Figure 1, United States Patent (USP) the 5th, 412, disclosed a kind of industry heat pipe radiator 100 commonly used for No. 535, this radiator 100 has a flat base 120, one heat pipe 140 is vertically fixed on this pedestal 120, and some radiating fins 160 are arranged by certain spaced and parallel and vertically are set on the heat pipe 140.For heat pipe 140 and radiating fin 160 are combined, it adopts the mode of hydraulic pressure or mechanical expanding, promptly earlier that radiating fin 160 is sheathed on it before heat pipe 140 moulding, utilize an axle or internal liquid pressurization expansion body that heat pipe 140 calibers are increased, thereby be connected with radiating fin 160 generation interference fit and then realization.But because heat pipe 140 is that machinery contacts with 160 of radiating fins, gapped existence, evenly driving fit, therefore, the heat transmission effect that heat pipe 140 and radiating fin are 160 is relatively poor, the high conduction characteristic of heat pipe 160 is not in full use, and radiator 100 overall performances are affected, and this method can't be utilized moulding heat pipe assembling radiator.

For utilizing moulding heat pipe assembling radiator, and make between heat pipe and radiating fin evenly zero-gap bond, the mode that has the dealer to adopt heat-conducting glue to bond, but because of the heat-conducting glue adhesion strength is low makes combining built on the sand of heat pipe and radiating fin.Therefore, the mode of the more employing soldering of dealer now is welded together heat pipe and radiating fin, it at first establishes the perforation with flanging on radiating fin, a kind of method be earlier with the radiating fin order against being arranged in together, then its perforation forms a passage, in this passage, be coated with tin cream, heat pipe is set in this passage again, utilize tin cream that heat pipe and radiating fin are welded together, but it is comparatively difficult at elongated tubular vias inner walls coating tin cream, and wear the tin cream of easily swiping again in the process at heat pipe, can't make tin cream be filled in the gap of heat pipe and radiating fin fully and evenly; Another kind method is to be set on radiating fin on the heat pipe one by one earlier, when being installed on the heat pipe, each radiating fin is coated with tin cream at its hemmed edges place, wear another radiating fin afterwards again, owing to be coated with cream is to carry out at interval with the installation radiating fin, cause assembling process trouble, efficient is quite low, and this method causes tin cream to be squeezed and excessive easily, cause that utilization rate reduces, and then influence the effect that combines of heat pipe and radiating fin.

Therefore, need provide a kind of make heat pipe and radiating fin evenly, the method for combining closely, can satisfy production, assemble requirement quickly and easily, can make radiator have good heat-conductive characteristic again.

[summary of the invention]

The object of the present invention is to provide the associated methods of a kind of heat pipe and radiating fin, be meant a kind of tin cream that utilizes especially, the method for combine closely quickly and easily heat pipe and radiating fin.

The objective of the invention is to realize by following technical proposal:

The associated methods of heat pipe of the present invention and radiating fin may further comprise the steps: a. establishes perforation on the radiating fin body, establishes flanging and establish notch on this flanging at the periphery of this perforation; B. radiating fin is set on the heat pipe; C. smear tin cream at the notch position of radiating fin flanging; D. the combination of heat pipe and radiating fin is inserted in the hot environment and heat, make the tin cream fusion; E. heat pipe and radiating fin are broken away from hot environment and cooling.

The associated methods of heat pipe of the present invention and radiating fin adopts tin cream welding moulding heat pipe and radiating fin, on the flanging of radiating fin, establish notch, disposable after the pre-assembling of heat pipe and radiating fin is finished tin cream is coated notch position, operating efficiency and convenience improve, and tin cream can evenly be filled in the gap of heat pipe and radiating fin after heating, make it contact closely, have less interface thermal resistance, thereby guarantee that heat pipe radiator has heat-conductive characteristic efficiently.

[description of drawings]

With reference to the accompanying drawings, the utility model will be further described in conjunction with the embodiments.

Fig. 1 is the side view of radiator in an existing heat pipe and the radiating fin associated methods.

Fig. 2 is the structural perspective of heat pipe and radiating fin in heat pipe of the present invention and the radiating fin associated methods.

Fig. 3 is the partial enlarged view of Fig. 2.

Fig. 4 is the structural plan figure of radiating fin in heat pipe of the present invention and the radiating fin associated methods.

[specific embodiment]

The associated methods of heat pipe of the present invention and radiating fin is to be applied to the heat pipe radiator manufacturing, and it can be with moulding heat pipe and radiating fin fast, closely be connected, and make heat pipe radiator have heat-conductive characteristic efficiently.

See also Fig. 2, this heat pipe radiator 1 have one with heat-generating electronic elements substrate contacted 10 such as central processing unit, at least one heat pipe 20 levels are plugged on the pedestal 10, some radiating fins 30 are arranged by certain spaced and parallel and are set on the heat pipe 20, this radiator 1 can absorb the heat that heat-generating electronic elements produces by pedestal 10, and pass to radiating fin 30, and then distribute by heat pipe 20.Certain this radiator 1 is not limited to said structure, can vertically plant on the pedestal 10 as heat pipe 20, and radiating fin 30 also can contact with pedestal 10 with heat pipe 20 simultaneously, concrete structure is not enumerated one by one and is described in detail, and purport of the present invention is to be to provide the associated methods of heat pipe 20 with radiating fin 30.

Please consult Fig. 3 and Fig. 4 simultaneously, the associated methods of heat pipe of the present invention and radiating fin can make radiating fin 30 be assembled into fast on the heat pipe 20 and with heat pipe 20 and evenly combine closely.This method is to establish perforation 34 on radiating fin 30 bodies 32, periphery in perforation 34 is extended with flanging 36 to body 32 1 rollover foldings, this flanging 36 can be affixed on the body 32 that heat pipe 20 outside wall surface are replaced last radiating fin 30 simultaneously when radiating fin 30 is set on the heat pipe 20, thereby can increase the contact area of radiating fin 30 and heat pipe 20, with the conduction of increase heat, and make 30 of each radiating fins keep certain intervals.This flanging 36 is provided with a notch 38, and this notch 38 extends to the junction of flanging 36 and body 32 from flanging 36 edges.

Above-mentioned radiating fin 30 is set on the heat pipe 20 in turn, and the flanging 36 that makes each radiating fin 30 body 32 of replacing adjacent radiating fin 30 is not had a side of flanging 36, the notch 38 of each flanging 36 all makes progress, preferably each notch 38 is positioned on the same vertical line, after pre-assembling is finished, utilization is selected tin cream welding gun instruments such as (figure do not show) and is smeared tin cream (figure does not show) at the heat pipe 20 outer wall millet cake of notch 38 positions of each radiating fin 30 flanging 36, again this heat pipe 20 and the combination of radiating fin 30 are inserted heating in the baking oven (figure does not show), because tin cream has lower fusing point, be the semi-molten fluidised form after being heated, and 30 of heat pipe 20 and radiating fins have the gap, tin cream is inserted this gap automatically by the flowability of himself, in heating process, the visual actual conditions suitable angle of overturning, so that tin cream is fully filled out the gap that is overlying on heat pipe 20 and radiating fin 30, (this time is according to heating-up temperature behind the certain hour, heat sink size size and tin cream amount are determined), the above-mentioned heat pipe 20 and the combination of radiating fin 30 are taken out, after the cooling, heat pipe 20 promptly reaches even with radiating fin 30, combine closely, it is plugged in the lump and is fixed on the pedestal 10, thereby be assembled into radiator 1.

Claims

1. the associated methods of heat pipe and radiating fin comprises the steps: that a. establishes perforation on the radiating fin body, establishes flanging and establish notch on this flanging at the periphery of this perforation; B. radiating fin is set on the heat pipe; C. smear tin cream at the notch position of radiating fin flanging; D. the combination of heat pipe and radiating fin is inserted in the hot environment and heat, make the tin cream fusion; E. heat pipe and radiating fin are broken away from hot environment and cooling.

2. the associated methods of heat pipe as claimed in claim 1 and radiating fin is characterized in that: when these radiating fins were set on the heat pipe, its flanging was replaced adjacent radiating fin.

3. the associated methods of heat pipe as claimed in claim 1 and radiating fin is characterized in that: above-mentioned notch extends to the junction of flanging and radiating fin body from hemmed edges.

4. the associated methods of heat pipe as claimed in claim 1 and radiating fin is characterized in that: when the combination of heat pipe and radiating fin was inserted in the hot environment, the notch of radiating fin flanging all made progress.