CN101727155A

CN101727155A - Heat radiation device

Info

Publication number: CN101727155A
Application number: CN200810305284A
Authority: CN
Inventors: 杨健; 张晶
Original assignee: Hong Jun Precision Industry Co ltd; Fuzhun Precision Industry Shenzhen Co Ltd
Current assignee: Hong Jun Precision Industry Co ltd; Fuzhun Precision Industry Shenzhen Co Ltd
Priority date: 2008-10-30
Filing date: 2008-10-30
Publication date: 2010-06-09

Abstract

The invention relates to a heat radiation device which is used for being installed on a chassis to isolate the chassis from the external environment. The heat radiation device comprises a shell installed on the chassis, an isolated layer contained in the shell and a first fan and a second fan which are installed on the shell, wherein the isolated layer divides the interior of the shell into a first containing cavity and a second containing cavity which are isolated from each other, the airflow generated by the first fan circulates between the first containing cavity and the chassis, and the airflow generated by the second fan circulates between the second containing cavity and the external environment. Since the heat radiation device adopts the construction of two fans, electronic elements in the chassis can effectively radiate heat when the chassis is enclosed, thereby ensuring the normal temperature in the chassis.

Description

Heat abstractor

Technical field

The present invention relates to a kind of heat abstractor, be meant a kind of heat abstractor that is applicable to closed computer cabinet especially.

Background technology

Along with development of electronic technology, the frequency of operation of electronic component is more and more higher, and the heat of its generation is also more and more.These heats will be badly influenced the work efficiency of electronic component as can not in time distributing.Therefore, need on these electronic components, install heat abstractor, to guarantee the normal operation of electronic component.

Computer generally includes a cabinet, some electronic component in the cabinet and heating radiators on some electronic components that is installed in required heat radiation respectively of being contained in.Each heating radiator comprise one with electronic component substrate contacted and some fins that goes out from base extension.For the heat in the cabinet is promptly dispelled the heat to the cabinet outside, also offer plurality of opening on the cabinet usually.In electronic component when work,, the heat of its generation is distributed in the air in the cabinet via the fin of heating radiator.This part air temperature after absorbing heat raises, and the perforate by cabinet flow to the cabinet outside then, thereby the heat in the cabinet is brought to the cabinet outside.Meanwhile, the cold air of cabinet outside flows into cabinet inside under the effect of air pressure, absorbs the heat of heating radiator once again, moves in circles thus, and the heat that electronic component is produced is disseminated to the cabinet outside constantly.

When this computer applications during in outdoor environment, because outdoor condition is comparatively harsh, in order to prevent that dust or steam from entering cabinet and electronic component is polluted or damages, the perforate of cabinet certainly will all cover up, and makes cabinet inside become an enclosure space that is hedged off from the outer world.Yet, the sealing of cabinet can cause the cabinet inner air and outer air isolated, cause the heat that intersperses among in the cabinet via heating radiator to distribute in time, cause the temperature of cabinet inside sharply to raise, brought potential safety hazard for the normal operation of electronic component by cross-ventilation.

Summary of the invention

In view of this, be necessary to provide a kind of heat abstractor that can effectively dispel the heat in fact to closed computer cabinet.

A kind of heat abstractor, be used to be installed on the cabinet of closed computer, this heat abstractor comprises that one is installed on housing, on the cabinet and is contained in the interlayer in the housing and is installed on first fan and second fan on the housing, this interlayer is separated into isolated each other first chamber and second chamber with enclosure interior, the air-flow that first fan produces passes first chamber and flow to the cabinet outside, and the air-flow that second fan produces passes second chamber and flow to cabinet inside.

Compared with prior art, heat abstractor of the present invention adopts second fan to force the interior air flow of cabinet, make it heat delivered with cabinet inside to interlayer, and the air-flow and the interlayer that produce by first fan simultaneously carry out heat interchange, thereby indirectly the heat of cabinet inside is distributed to the cabinet outside.Owing to adopt the structure of double fan, heat abstractor of the present invention can be promptly promptly distributes the indirect convection current by air of the heat of cabinet inside, thereby guarantees that temperature in the cabinet remains in the desirable numerical range.

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

Description of drawings

Fig. 1 is the three-dimensional combination figure of heat abstractor of the present invention.

Fig. 2 is the exploded view of Fig. 1.

Fig. 3 is the sectional view of Fig. 1.

Fig. 4 is the rear view of Fig. 1, and this moment, one cabinet was installed in the heat abstractor below.

Embodiment

See also Fig. 1 and Fig. 4, show heat abstractor of the present invention.This heat abstractor is used to be installed on the cabinet 10 of an outdoor computer, so that cabinet 10 is sealed fully, cabinet 10 inside are completely cut off with external environment condition, prevent that the dust of outside or steam from entering cabinet 10 inside and causing cabinet 10 interior electronic components (figure does not show) pollution or damages.

See also Fig. 2, heat abstractor comprises that a housing 20, is fixed in the interlayer 30 in the housing 20 and is installed on one first fan 50 and one second fan 40 at housing 20 bottoms and top respectively.This housing 20 comprises that a holding part 22 and is fixed in the cover plate 24 at these holding part 22 tops.This holding part 22 comprises base plate 222, four sidewalls 224 that marginal lappet directly extends upward around base plate 222 respectively, and four flangings 226 that extend outward from these sidewall 224 top, horizontal respectively of a rectangle.This base plate 222 is in offer first opening 221 that is octagonal first perforate 220 and a rectangle respectively near the position of its opposite end.The shape of this first perforate 220 is all identical with the shape and the size of the air outlet of first fan 50, and it is used for cooperating the air-flow that produces for first fan 50 to advance in the housing 20 from cabinet 10 inputs with first fan 50; The area of this first opening 221 is less than the area of first perforate 220, and it is used for exporting in the cabinet 10 for the air-flow in the housing 20, jointly housing 20 and cabinet 10 are communicated with into complete first current path (figure is mark not) with first perforate 220.Cover plate 24 is by on four flangings 226 that are welded and fixed to holding part 22, and it also comprises that one is second opening 241 of octagonal second perforate 240 and a rectangle.This second opening 241 is corresponding with the position of first perforate 220, and 240 positions with first opening 221 of second perforate are corresponding.The effect of this second opening 241 and second perforate 240 is identical with the effect of first opening 221 and first perforate 220 respectively, promptly, second perforate 240 is used for cooperating with second fan 40 for air-flow in external environment condition is imported into housing 20,241 of second openings are used for exporting external environment condition to for the air-flow of housing 20 inside, and the two is communicated with into second a complete current path with housing 20 inside with external environment condition jointly.

See also Fig. 3, this interlayer 30 is repeatedly bent continuously by a smooth sheet metal and forms, and it comprises that multi-disc fin parallel to each other 32 and some last partitions 34 that alternately connects adjacent fin 32 tops and bottom successively reach partition 36 down.Partition 34 is welded in the bottom surface of cover plate 24 on these, be separated into the disconnected mutually cavity volume 302 of going up with inner chamber 300 and reach cavity volume 304 down housing 20, wherein, should go up cavity volume 302 and be enclosed jointly by partition 36, fin 32 and cover plate 24 down and form, 304 of this time cavity volumes are enclosed jointly by last partition 34, fin 32 and holding part 22 and form.Should go up cavity volume 302 and communicate with the external world in the position corresponding to second perforate 240 and second opening 241,304 of this time cavity volumes are communicated with cabinet 10 in the position corresponding to first perforate 220 and first opening 241.Because last partition 34 is the bottom surfaces that are welded on cover plate 24, therefore, for last cavity volume 302, only have be positioned at second opening 241 and second perforate 240 under the position could form gas channel with external communications, and other positions can't form gas channel because 32 of adjacent fin are covered and sealed up fully by cover plate 24.For following cavity volume 304, owing to do not contact substantially with holding part 22, but all air feed stream circulations in the therefore whole cavity volume 304 down.

First fan 50 and second fan 40 are individually fixed in the position of first perforate 220 and second perforate 240, and the air outlet of the two all is right against first perforate 220 and second perforate 240, with air-flow respectively in housing 20 is imported on bottom and top.Owing to stagger each other in the position of first fan 50 and second fan 40, therefore, the air-flow in first gas channel is mobile in the opposite direction each other with the air-flow in second gas channel, more effectively interlayer 30 is dispelled the heat.

Please consult Fig. 4 again, it schematically shows the air-flow trend of first fan 50 and second fan 40.When heat abstractor is worked, its first fan 50 is sucked into the air that absorbs the electronic component heat in the cabinet 10 in the following cavity volume 304 of housing 20, this part hot-air (promptly in the housing of Fig. 4 towards that part of air-flow that moves left) is passing in the process of cavity volume 304 down fin 32 heat exchange with interlayer 30, will be again by in first opening, the 221 inflow cabinets 10 heat transferred is to fin 32 after.Meanwhile, second fan 40 is sucked into the cold air in the external world in the last cavity volume 302 of housing 20, also carry out heat exchange in the process of cavity volume 302 on this part cold air (i.e. that part of air-flow that court moves right in the housing of Fig. 4) is being flowed through, flow out to the external world by second opening 241 again after heat is siphoned away from fin 32 with the fin 32 that absorbs heat.Compared with prior art; the present invention is under the situation that cabinet 10 inside and external environment are completely cut off fully; by the acting in conjunction of first fan 50 and second fan 40, the heat in the cabinet 10 is dispersed in the middle of the external world apace, thereby guarantees the normal operation of electronic component in the cabinet 10.

Claims

1. heat abstractor, be used to be installed on the cabinet so that this cabinet and external environment is isolated, it is characterized in that: this heat abstractor comprises that one is installed on housing, on the cabinet and is contained in the interlayer in the housing and is installed on first fan and second fan on the housing, this interlayer is separated into isolated each other first cavity volume and second cavity volume with enclosure interior, the air-flow that first fan produces circulates between first cavity volume and cabinet, and the air-flow that second fan produces circulates between second cavity volume and external environment.

2. heat abstractor as claimed in claim 1 is characterized in that: the flow direction of the air-flow that first fan is produced is opposite with the flow direction of the air-flow that second fan is produced.

3. heat abstractor as claimed in claim 2 is characterized in that: first fan and second fan are installed on the bottom and the top of housing respectively with staggering each other.

4. heat abstractor as claimed in claim 3 is characterized in that: housing at its top and the bottom offer first opening that aligns with first fan and second opening that aligns with second fan respectively.

5. heat abstractor as claimed in claim 4, it is characterized in that: housing is in offering one first perforate and one second perforate respectively corresponding to the position of first fan and second fan, the area of this first perforate and second perforate is greater than the area of first opening and second opening.

6. heat abstractor as claimed in claim 5 is characterized in that: the area of first perforate and second perforate equates with the area of the air outlet of first fan and second fan.

7. as each described heat abstractor of claim 1 to 6, it is characterized in that: interlayer is formed by sheet metal continuous several times bending.

8. heat abstractor as claimed in claim 7 is characterized in that: housing comprises that a holding part and is fixed to the cover plate on the holding part, and this interlayer is fixed on the cover plate.

9. heat abstractor as claimed in claim 8 is characterized in that: interlayer comprises that some fins that are parallel to each other and some last partitions that alternately connects adjacent fin top and bottom respectively reach partition down, and partition is fixed in the bottom surface of cover plate on these.

10. heat abstractor as claimed in claim 9 is characterized in that: first cavity volume is by the fin of interlayer, the cover plate of partition and housing encloses jointly and forms down, and second cavity volume is enclosed jointly by the fin of interlayer, the holding part of going up partition and housing and forms.