CN201230432Y - Machine box and heat radiating device - Google Patents
Machine box and heat radiating device Download PDFInfo
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- CN201230432Y CN201230432Y CNU200820109611XU CN200820109611U CN201230432Y CN 201230432 Y CN201230432 Y CN 201230432Y CN U200820109611X U CNU200820109611X U CN U200820109611XU CN 200820109611 U CN200820109611 U CN 200820109611U CN 201230432 Y CN201230432 Y CN 201230432Y
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- heat
- metal
- sheet metal
- fin
- silica gel
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Abstract
The utility model relates to the technical field of heat dissipation in particular to a technology of the heat dissipation of chips in a case. The case comprises a metal outer shell, chips arranged in the case, a first metal sheet, a metal fin and heat conducting silica gel. The first metal sheet contacts with the outer surface of the chip to form heat conducting connection; one end of the metal fin forms heat conducting connection with the first metal sheet; the heat conducting silica gel is filled between the other end of the metal fin and the metal outer shell. The utility model also provides a radiator and an installation method thereof. The technology conducts the heat of the chip to the outer shell of the case through the first metal sheet, the metal fin and the heat conducting silica gel, so that the chip can not only dissipate heat through the metal fin, but also dissipate heat out of the case through the case, which greatly enhances the heat dissipation effect; in addition, the materials of the first metal sheet and the metal fin are commonly used, cheap and simple to be processed, so the cost is low.
Description
Technical field
The utility model relates to the heat dissipation technology field, relates in particular to the technology that the chip that is installed in the equipment cabinets is dispelled the heat.
Background technology
Present electronic product has more and more adopted large scale integrated chip.These chips powerful, the speed of service is fast, so the power consumption of chip is also very big, and is just higher for the requirement of heat radiation.
Usually chip is dispelled the heat, can add radiator at chip surface.A kind of common heat sink comprises as shown in Figure 1: base plate and fin.Base plate and fin constitute by heat conductivility good metal material, such as alloy aluminum, copper etc.The lower surface of base plate contacts with chip surface, and the heat of chip is transmitted to fin.Fin is made of numerous sheet metals vertical with base plate, thereby increases area of dissipation, accelerates the speed that chip heat distributes.But the radiating effect of this routine is more limited.
For further the quickening dispelled the heat, embed heat pipe in the heat radiator fin the inside in the prior art and assist the enhancing heat dispersion.As shown in Figure 2, heat pipe connects two or more radiators.Heat pipe is made into the hollow copper tubing that seals usually, and inside charges into suitable liquid, and this boiling point of liquid is low, easily volatilization.Heat pipe one end is an evaporation ends, an other end is a condensation end, when heat pipe one end is heated, liquid in the pipe evaporates rapidly and flows to an other end, discharge heat, gas cooling back regelation becomes liquid, and liquid flows back to evaporation ends by capillarity, so circulation is more than, makes heat reach an other end by heat pipe one end.Utilize the inside heat pipe liquid to be heated and to flow to radiator one end of relative low temperature after the gasification from the sink side on the hotter chip, take away heat, thereby the several radiators that make heat pipe connect reach heat balance, enlarge the final result of area of dissipation.
But utilize heat pipe to dispel the heat, need customization to be embedded with the radiator of heat pipe, production cost is higher.
In addition, can also utilize refrigerating chip to dispel the heat in the prior art: be placed with refrigerating chip on the chip on the circuit board in cabinet, refrigerating chip carries out work, chip is freezed, dispels the heat after carrying out externally fed.This refrigerating chip is embedded in an end of rubber, and the other end of rubber then is embedded in the casing, and rubber is heat conductive rubber, the heat of refrigerating chip is transmitted to casing dispels the heat.
But the cost of the refrigerating chip in the said method is also higher, and needs externally fed; And heat conduction rubber is made in die sinking, and production cost is also higher.And when the cabinet height dimension changes, also need die sinking again to make heat conductive rubber, cause the increase of cost.In addition, rubber is limited to the conduction efficiency of heat, so radiating effect is also limited.
The utility model content
The utility model provides a kind of cabinet and heat abstractor, in order to reach the radiating effect that both strengthens chip, the purpose of saving cost again.
A kind of cabinet comprises: metal shell, and be installed on the interior chip of cabinet, also comprise:
First sheet metal forms heat conduction with the outer surface contact of described chip and is connected;
Metal fin, one end form heat conduction with described first sheet metal and are connected;
Heat conductive silica gel is filled between the other end and described metal shell of described metal fin.
Described cabinet also comprises: second sheet metal, be arranged between the other end and described heat conductive silica gel of described metal fin, and described metal fin forms heat conduction by this second sheet metal, heat conductive silica gel with described metal shell and is connected.
Described first sheet metal, metal fin, second sheet metal are one of the forming.
A kind of heat abstractor comprises: first sheet metal, metal fin and heat conductive silica gel;
One end of described metal fin is connected with described first sheet metal, and its other end covers described heat conductive silica gel.
Described device also comprises: second sheet metal, be arranged between the other end and described heat conductive silica gel of described metal fin, and described metal fin forms heat conduction by this second sheet metal and described heat conductive silica gel and is connected.
The heat abstractor of the utility model embodiment is transmitted to casing by first sheet metal, metal fin and heat conductive silica gel with the heat of chip, make chip to dispel the heat by metal fin, can also outside cabinet, dispel the heat by casing, strengthen radiating effect greatly; And because the material of first sheet metal, metal fin is commonly used, cheap, processing is simple, so cost is also low.
Further, the heat abstractor of the utility model embodiment also comprises second sheet metal that is arranged between metal fin and the heat conductive silica gel, this second sheet metal can prevent that heat conductive silica gel from being cut off by metal fin under long-term extruded situation, can also increase heat conductive silica gel by the contact area between increase of second sheet metal and the metal fin, conduct heat more fast fully.
Description of drawings
Fig. 1 is the common heat sink structural representation of prior art;
Fig. 2 is the heat spreader structures schematic diagram with heat pipe of prior art;
Fig. 3 is the construction for heat radiating device schematic diagram of the utility model embodiment;
Fig. 4 is the method flow diagram that heat abstractor dispels the heat to chip that passes through of the utility model embodiment.
Embodiment
The utility model embodiment increases the height of heat radiator fin for the radiator that is installed on the chip, makes it to approach casing; Between fin and casing, be lined with sheet metal and heat conductive silica gel, heat conductive silica gel contacts with casing, thereby make the heat of chip not only can dispel the heat, can also be transmitted to casing, utilize the huge surface area of casing outwards to dispel the heat by fin.
In cabinet as shown in Figure 3, be provided with circuit board 302 at the base plate 301 of cabinet, chip 303 for dispelling the heat on the circuit board 302.Outer surface at chip 303 has been installed heat abstractor, and this heat abstractor also is connected with the shell 304 of cabinet.This casing 304 can be mobilizable lid of cabinet usually.
Heat abstractor is made of first sheet metal 311, metal fin 312, second sheet metal 313 and heat conductive silica gel 314.
A surface of first sheet metal 311 contacts with chip 303 outer surfaces, and its another apparent surface has then connected metal fin 312, thereby the heat of chip 303 is dispelled the heat by fin.
One end of metal fin 312 is connected with first sheet metal 311, and its other end is connected with second sheet metal 313; Just, metal fin 312 is connected between first sheet metal 311 and second sheet metal 313.
A surface coverage of second sheet metal 313 is on metal fin 312, and just second sheet metal 313 surface is connected with an end of metal fin 312; Another apparent surface of second sheet metal 313 has then covered heat conductive silica gel 314.
Because metal fin 312 has enough height (second sheet metal 313 that connects such as metal fin 312 apart from casing less than 15mm), therefore the heat conductive silica gel 314 on second sheet metal 313 can contact with casing, thereby make chip conduct heat to casing 304, outwards dispel the heat by casing 304 again by first sheet metal 311, metal fin 312, second sheet metal 313 and heat conductive silica gel 314.
Heat conductive silica gel 314 not only can be filled the difference in height of second sheet metal 313 and casing 304, and the material of thermal conductive silicon film softness has also guaranteed rugged can being filled on fin and the cabinet top, thereby guarantees to contact with the good of casing.Effect is preferably, and the thickness of heat conductive silica gel 314 is a bit larger tham the difference in height (thickness such as heat conductive silica gel 314 is no more than difference in height 1.5mm) of second sheet metal 313 and casing 304.Like this, can carry out certain extruding to heat conductive silica gel 314, both guarantee that heat abstractor contacts with the good of casing, again the heat conductive silica gel 314 on second sheet metal 313 be played certain positioning action, it can not dropped out by casing.
The benefit that is lined with second sheet metal 313 between heat conductive silica gel 314 and metal fin 312 is, can prevent that not only heat conductive silica gel 314 from being cut off by metal fin 312 under long-term extruded situation, can also increase heat conductive silica gel 314 by the contact area between 313 increases of second sheet metal and the metal fin 312, conduct heat more fast fully.
By said method, not only can dispel the heat by metal fin 312, can also conduct heat to casing 304 by the high metal fin 312 of heat transfer efficiency, dispel the heat by casing 304.Therefore, strengthened radiating effect greatly.In addition, realize the heat exchange that cabinet is interior and cabinet is outer, therefore can also avoid adopting fan to realize in the cabinet and the heat exchange outside the cabinet, noise and the dust of also just having avoided fan to bring because heat can be transmitted to casing 304.
On second sheet metal 313, cover the heat conductive silica gel sheet, thereby finally form the heat abstractor of the utility model embodiment.The thermal conductive silicon film is easy to cut, and can cut out suitable gauge as required.Usually the thickness of thermal conductive silicon film is 0.5-15mm.The thermal conductive silicon film that cuts is positioned on second sheet metal 313,, therefore can not be used between second sheet metal 313 and the thermal conductive silicon film and smear liquid heat conductive silica gel because thermal conductive silicon film itself just has certain viscosity.Certainly,, also can between second sheet metal 313 and thermal conductive silicon film, smear liquid heat conductive silica gel, after liquid heat conductive silica gel solidifies, play bonding, fixation if for more firm fixedly thermal conductive silicon film.
Because the heat abstractor of the utility model embodiment is to be made of heat-conducting metal material and heat conductive silica gel commonly used, needn't adopt more expensive refrigerating chip of price or heat pipe; And processing and making process is simple, needn't carry out complicated and capital-intensive operation such as die sinking, perhaps be embedded with the complex technology of heat pipe between fin, so cost is lower.
In addition,, can remove second sheet metal 313 of heat abstractor, and metal fin 312 is directly contacted with casing 304 by heat conductive silica gel 314, dispel the heat as a kind of method of simplifying above-mentioned heat abstractor.By simplifying heat abstractor, can further reduce cost.
The above-mentioned heat abstractor of the installation that the utility model embodiment provides, the method flow diagram that dispels the heat for chip comprises the steps: as shown in Figure 4
S401, determine that chip is to the distance of casing in the cabinet.
Determine to be installed on the distance of the interior chip of cabinet to the casing of its top.
S402, design, making heat abstractor.
According to the distance of chip to casing, the height of design heat abstractor.The height of heat abstractor can arrive the distance of casing slightly greater than chip, but the value that surpasses can not be too big, should be at (in 1.5mm) between the set point.Such as, determine that chip is 50mm to the distance of casing, the height that then designs heat abstractor is 51mm, wherein the heat conductive silica gel height of heat abstractor is 10mm, first sheet metal, metal fin and second sheet metal, three's common elevation then is 41mm.Like this, just can be according to the size heat abstractor customized of design.
Because chip height, cabinet height have fixedly specification,, all can adopt the heat abstractor of this design to the cabinet of this specification as long as after therefore designing heat abstractor, batch process for the cabinet of same specification.
S403, heat abstractor is installed on the chip.
Heat abstractor is installed on the chip, both can be to be undertaken bondingly by heat-conducting silicone grease or liquid heat conductive silica gel, also can be screw, screw.
S404, cover casing.
After heat abstractor is installed on chip surface, cover casing.Casing promptly is the loam cake of cabinet usually, perhaps also can be the side cover of cabinet.Because the height of heat abstractor is a bit larger tham the distance of chip to casing, then casing compresses the heat conductive silica gel of heat abstractor, forms good heat conduction and connects.
The heat abstractor of the utility model embodiment is transmitted to casing by first sheet metal, metal fin and heat conductive silica gel with the heat of chip, make chip to dispel the heat by metal fin, can also outside cabinet, dispel the heat by casing, strengthen radiating effect greatly; And because the material of first sheet metal, metal fin is commonly used, cheap, processing is simple, so cost is also low.
Further, the heat abstractor of the utility model embodiment also comprises second sheet metal that is arranged between metal fin and the heat conductive silica gel, this second sheet metal can prevent that heat conductive silica gel from being cut off by metal fin under long-term extruded situation, can also increase heat conductive silica gel by the contact area between increase of second sheet metal and the metal fin, conduct heat more fast fully.
Owing to the heat of chip is transmitted to casing by first sheet metal, metal fin, second sheet metal and heat conductive silica gel, realize under the situation that can not use case fan that cabinet is inside and outside and carry out heat exchange, thereby avoided fan noise, and given the dust that brings in the cabinet because of air exchange.
In addition,, therefore need not carry out externally fed, use more convenient, reliable because the heat abstractor of the utility model embodiment does not relate to active parts such as refrigerating chip.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (8)
1, a kind of cabinet comprises: metal shell, and be installed on the interior chip of cabinet, and it is characterized in that, also comprise:
First sheet metal forms heat conduction with the outer surface contact of described chip and is connected;
Metal fin, one end form heat conduction with described first sheet metal and are connected;
Heat conductive silica gel is filled between the other end and described metal shell of described metal fin.
2, cabinet as claimed in claim 1, it is characterized in that, also comprise: second sheet metal, be arranged between the other end and described heat conductive silica gel of described metal fin, described metal fin forms heat conduction by this second sheet metal, heat conductive silica gel with described metal shell and is connected.
3, cabinet as claimed in claim 2 is characterized in that, described first sheet metal, metal fin, second sheet metal are one of the forming.
As claim 2 or 3 described cabinets, it is characterized in that 4, the distance between described second sheet metal and the described metal shell is less than 15mm.
5, a kind of heat abstractor is characterized in that, comprising: first sheet metal, metal fin and heat conductive silica gel;
One end of described metal fin is connected with described first sheet metal, and its other end covers described heat conductive silica gel.
6, device as claimed in claim 5 is characterized in that, also comprises:
Second sheet metal is arranged between the other end and described heat conductive silica gel of described metal fin, and described metal fin forms heat conduction by this second sheet metal and described heat conductive silica gel and is connected.
7, device as claimed in claim 6 is characterized in that, the thickness of described heat conductive silica gel is 0.5-15mm.
As claim 6 or 7 described devices, it is characterized in that 8, described first sheet metal, metal fin, second sheet metal are one of the forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109611XU CN201230432Y (en) | 2008-08-01 | 2008-08-01 | Machine box and heat radiating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109611XU CN201230432Y (en) | 2008-08-01 | 2008-08-01 | Machine box and heat radiating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201230432Y true CN201230432Y (en) | 2009-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820109611XU Expired - Fee Related CN201230432Y (en) | 2008-08-01 | 2008-08-01 | Machine box and heat radiating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201230432Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149991A (en) * | 2012-12-26 | 2013-06-12 | 张伟 | Silent non-power-consumption heat dissipation type computer mainframe |
| CN107295782A (en) * | 2017-07-05 | 2017-10-24 | 华勤通讯技术有限公司 | The structure and terminal of a kind of silicagel pad suitable for terminal |
| US9898056B2 (en) | 2013-06-19 | 2018-02-20 | Sandisk Technologies Llc | Electronic assembly with thermal channel and method of manufacture thereof |
| TWI626529B (en) * | 2013-06-19 | 2018-06-11 | 桑迪士克科技有限責任公司 | Electronic system with heat extraction and method of manufacture thereof |
| US10013033B2 (en) | 2013-06-19 | 2018-07-03 | Sandisk Technologies Llc | Electronic assembly with thermal channel and method of manufacture thereof |
-
2008
- 2008-08-01 CN CNU200820109611XU patent/CN201230432Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149991A (en) * | 2012-12-26 | 2013-06-12 | 张伟 | Silent non-power-consumption heat dissipation type computer mainframe |
| US9898056B2 (en) | 2013-06-19 | 2018-02-20 | Sandisk Technologies Llc | Electronic assembly with thermal channel and method of manufacture thereof |
| TWI626529B (en) * | 2013-06-19 | 2018-06-11 | 桑迪士克科技有限責任公司 | Electronic system with heat extraction and method of manufacture thereof |
| US10013033B2 (en) | 2013-06-19 | 2018-07-03 | Sandisk Technologies Llc | Electronic assembly with thermal channel and method of manufacture thereof |
| CN107295782A (en) * | 2017-07-05 | 2017-10-24 | 华勤通讯技术有限公司 | The structure and terminal of a kind of silicagel pad suitable for terminal |
| CN107295782B (en) * | 2017-07-05 | 2024-02-23 | 华勤技术股份有限公司 | Silica gel pad structure suitable for terminal and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20140801 |
|
| EXPY | Termination of patent right or utility model |