CN2699476Y - Heat sink for heat pipe - Google Patents

Abstract

Disclosed is a heat sink for heat pipes, comprising a base, a heat conduction pole, a plurality of heat pipes and a plurality of radiation fins. The heat conduction pole is arranged on the base, the heat pipes which are vertically inserted on the base upwards penetrate through the heat conduction pole and extend, and the extended ends of the heat pipes extend downwards after bent. The radiation fins which are corresponding to the heat conduction pole and the heat pipes extending out the heat conduction pole are provided with openings and perforations, the radiation fins which are sheathed on the heat conduction pole and the heat pipes at a certain interval are fixed on the heat conduction pole and the heat pipes in a welding mode, and the heat sink for the heat pipes is assembled.

Description

Heat-pipe radiating apparatus

[technical field]

The utility model is about a kind of heat abstractor, is meant a kind of heat-pipe radiating apparatus that is suitable for adopting the minor diameter heat pipe and can makes full use of its efficient heat transfer performance especially.

[background technology]

In the modern industry, computer application is almost omnipresent, along with the raising that the production real-time is required and the increase of data processing amount, need constantly have high performance computer to release and satisfy industrial application.And the performance of computer depends on its core parts-central processing unit to a great extent, therefore, the high-frequency high-speed central processing unit is brought in constant renewal in and is regenerated, its speed of service is more and more faster, but, the central processing unit speed of service is fast more, then the heat of its unit interval generation is many more, if the untimely eliminating of heat, excessive buildup will cause central processor temperature to raise, and the stability of its operation is subjected to very big influence, and system failure incidence increases, in the high occasion of many security requirements, the loss that this harm is difficult to generation to remedy.

In order effectively to distribute the heat that central processing unit produces in running, industry installs auxiliary its heat radiation of a radiator usually additional on the central processing unit surface, thereby makes central processing unit self temperature maintenance in normal range of operation.What early stage application was more is the aluminium extruded type radiator, it is at high temperature with half molten metal aluminium one extrusion molding, and make it have a flat base and by the convex several dissipation fins of stretching out of this pedestal, passing to radiating fin by pedestal absorption heat further distributes again, but because the difficulty of making, radiating fin density, depth-width ratio are limited, and the efficiently radiates heat area also is restricted, therefore, radiating effect can't obtain breakthrough raising.

Afterwards, the dealer separated manufacturing with radiating fin and pedestal, and recombinant can address the above problem, but more and more faster with the speed of service of central processing unit, and the above-mentioned performance of utilizing heat exchange pattern to improve radiator merely can't satisfy the needs of actual heat radiation.

Therefore, the technology personage has invented heat pipe in the industry, temperature remained unchanged and can absorb or emit the principle work of big calorimetric when it utilized liquid to change between the gas-liquid binary states, its liquid that an amount of heat of vaporization height of splendid attire, good fluidity, chemical property are stable in a sealing low pressure tubular shell, boiling point is lower, as water, ethanol, acetone etc., utilize the be heated cooling and when between the gas-liquid binary states, changing of this liquid, absorb or emit a large amount of heat and can make heat reach the other end rapidly by body one end.The dealer connects a heat conducting base with heat pipe one end, the other end is in conjunction with several dissipation fins, thereby composition radiator, absorb heat by pedestal, passing to radiating fin by heat pipe further distributes again, because liquid circulation velocity is fast, big quantum jump the heat radiation limit of traditional heat-dissipating device, radiating efficiency is increased substantially, heat pipe radiator obtains extensive and a large amount of application at present, its typical structure as shown in Figure 1, in addition, the radiator that No. the 01237490.3rd, People's Republic of China's patent and TaiWan, China patent also disclose this structure TW534379 number.

Owing to normally combine between heat pipe and pedestal and radiating fin with welding manner, on radiating fin, establish the perforate corresponding with the heat pipe external diameter, because the heat pipe diameter is less, so bore size is also less, crooked roundlet segmental arc welding process between perforate and heat pipe is difficult for carrying out, and be difficult to guarantee welding effect, often cause empty weldering, cause heat pipe fully not contact with radiating fin, therefore, though heat pipe has heat transfer property efficiently, can not fully heat be passed to radiating fin, its performance can not get effective performance, and the heat-sinking capability of integral heat sink device is affected.For addressing this problem, there is the dealer to adopt major diameter heat pipe upper sleeve through radiating fin, but suitable difficulty of major diameter heat pipe manufacturing and cost height.

In addition, be not difficult to find out by the heat spreader structures that above-mentioned patent discloses, heat pipe vertically is inserted on the pedestal, limited by base height, the contact length of heat pipe and pedestal is less, and because the heat pipe diameter is little, therefore, also little with the radiating fin contact area, the heat of the pedestal heat pipe that passes to not yet in effect, the heat of the heat pipe radiating fin that passes to not yet in effect, therefore, though heat transmits in a large number apace in the heat pipe section, be obstructed and cause the loss of heat delivered at the interface of heat pipe and pedestal and fin, the high thermal conductivity of opposite heat tube causes very big waste.Therefore, need make improvements, make the heat conductivility of heat pipe obtain fully effectively performance, and then realize high efficiency and heat radiation above-mentioned heat-pipe radiator structure.

[summary of the invention]

The purpose of this utility model is to provide a kind of heat abstractor, is meant a kind of heat-pipe radiating apparatus that is suitable for adopting the minor diameter heat pipe and can makes full use of its efficient heat transfer performance especially.

The purpose of this utility model realizes by following technical proposal:

The utility model heat-pipe radiating apparatus comprises at least one heat pipe and at least one radiating fin, the outside sheathed heating column of this heat pipe, radiating fin are sheathed on the heating column periphery and fix on it with welding manner, and heat passes to heating column by heat pipe, pass to radiating fin by heating column again, and then distribute.

The utility model heat-pipe radiating apparatus places some heat pipes in the big heating column of one diameter, again outside heating column in conjunction with radiating fin, because heat pipe combines more or less freely with the duct of heating column, and can obtain preferable sealing property, and the bigger Outside Dimensions of heating column tool, welding is easy to carry out and can guarantees the good welds effect between itself and radiating fin, therefore, can make the heat of the absorption of pedestal pass to radiating fin fast, minor diameter heat pipe utilance is improved greatly by heat pipe.

[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 sectional view of heat-pipe radiating apparatus in the prior art.

Fig. 2 is the stereogram of the utility model heat-pipe radiating apparatus.

Fig. 3 is the part exploded view of the utility model heat-pipe radiating apparatus.

Fig. 4 is the part assembly drawing of another embodiment of the utility model heat-pipe radiating apparatus.

[embodiment]

The utility model heat-pipe radiating apparatus is to adopt the minor diameter heat pipe heat to dress up radiator, is installed in auxiliary its heat radiations in heat-generating electronic elements surface such as central processing unit.

See also Fig. 2 and Fig. 3, the utility model heat-pipe radiating apparatus comprise one with contacted flat base 10, the one upright circular heating column 20 of central processing unit (figure do not show), some heat pipes 30 and several dissipation fins 40.This heating column 20 is installed in pedestal 10 upper surfaces, but has the duct (not label) that several heating tubes pass on it, these heat pipes 30 vertically are plugged on the pedestal 10 and are upward through the heating column 20 that is located on the pedestal 10 and stretch out (stretching out) in the duct of heating column 20, extend straight down after its external part bending, above-mentioned radiating fin 40 corresponding above-mentioned heating columns 20 and 30 sections of heat pipes that stretch out heating column 20 are provided with opening 42 and perforation 44, each opening 42 and perforation 44 peripheries are formed with flanging 43,45, these flangings 43,45 can make radiating fin 40 that the back is installed increases it with the contact area of heating column 20 and heat pipe 30 and make adjacent radiating fin 40 spaces maintenance certain distance, these radiating fins 40 are set on heating column 20 peripheries by opening 42, keep certain interval each other, and the heat pipe 30 that stretches out heating column 20 passes the perforation 44 on the radiating fin 40, radiating fin 40 all combines in the soldering mode with heating column 20 and 30 of heat pipes, thereby is assembled into heat-pipe radiating apparatus.

This heat abstractor absorbs heat along upwards conduction of heat pipe 30 by pedestal 10, pass to radiating fin 40 by heating column 20 again, the a part of heat of pedestal 10 is also directly along upwards conduction of heating column 20 simultaneously, and pass to radiating fin 40, and 30 sections of heat pipes that stretch out heating column 20 combine with radiating fin 40, also can conduct heat to radiating fin 40, therefore, the heat that pedestal 10 absorbs can conduct to radiating fin 40 fast, and further distributes.

In the utility model heat-pipe radiating apparatus, though stretching out the heat pipe 30 of heating column 20 still needs and radiating fin 40 welding, though itself and 30 of heat pipes are still the welding of roundlet segmental arc, still there is empty weldering phenomenon, but because the setting of heating column 20, make heat pipe 30 heat fully can be transmitted to radiating fin 40, stretch out 30 of the heat pipes of heating column 20 and strengthen conductive force.

See also Fig. 4, be the utility model heat-pipe radiating apparatus second embodiment, wherein heat pipe 30 can extend upward a segment length after passing heating column 20 ' straight, the heat pipe 30 of this length is too in conjunction with radiating fin 40 ', promptly a part of radiating fin 40 is combined in heating column 20 ' and goes up and combine with heat pipe 30 in this radiator, another part radiating fin 40 ' only combines with heat pipe 30, this execution mode is generally used for heating column 20 ' for copper, its heat conductivility is good, be in contact with it the heat that can make heat pipe 30 by a part of radiating fin 40 and fully pass to radiating fin 40 fast, and other radiating fin 40 ' that only contacts with heat pipe 30 works to strengthen heat radiation, and its heat-sinking capability is suitable with the conventional heat pipe heat abstractor.

The utility model is because being provided with of heating column 20 mainly is in order to solve heat pipe 30 and the bad problem of combining of radiating fin 40, so, above-mentioned heating column 20 also can not contact with pedestal 10, and directly wear and be fixed on the heat pipe 30, at this moment, radiating effect is poor than first embodiment, but still the thermal conduction effect of 40 of heat pipe 30 and radiating fins is improved greatly, effectively improves heat-sinking capability.

In addition, heating column 20 also can from pedestal 10 upwards one extend to form, and heating column 20 shapes do not limit yet, can be prism-shaped or bullet etc. (this case not icon) one by one, and the shape of radiating fin 40 upper sheds 42 is corresponding with heating column 20 cross sectional shapes, and this case pedestal 10 also can save, and heating column 20 directly contacts with heat-generating electronic elements and gets final product.

Claims (6)

1. heat-pipe radiating apparatus, be installed on auxiliary its heat radiation in heat-generating electronic elements surface, comprise at least one heat pipe and at least one radiating fin, it is characterized in that: the outside sheathed heating column of this heat pipe, radiating fin are sheathed on the heating column periphery and fix on it with welding manner.

2. heat-pipe radiating apparatus according to claim 1 is characterized in that: described heating column can be cylindrical, prismatic or pyramid.

3. heat-pipe radiating apparatus according to claim 1 is characterized in that: but described heating column is provided with the duct that heating tube wears.

4. heat-pipe radiating apparatus according to claim 1 is characterized in that: described heating column can be installed on the pedestal, and this pedestal contacts with heat-generating electronic elements.

5. heat-pipe radiating apparatus according to claim 1 is characterized in that: the corresponding heating column of described radiating fin has opening, and the opening periphery is provided with flanging.

6. heat-pipe radiating apparatus according to claim 1 is characterized in that: stretch out the heat pipe bending extension of heating column and pass radiating fin.

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