CN101193535A

CN101193535A - Heat pipe radiator

Info

Publication number: CN101193535A
Application number: CNA2006101573129A
Authority: CN
Inventors: 周世文; 陈俊吉; 陈葆春
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: 2006-12-01
Filing date: 2006-12-01
Publication date: 2008-06-04
Anticipated expiration: 2026-12-01
Also published as: CN101193535B

Abstract

A heat tube heat dissipating device comprises a pedestal, a plurality of heat dissipating fins, a first heat tube and a second heat tube which are connected with the pedestal and the heat dissipating fins; among which, every heat tube consists of a heat absorbing part and a heat dissipating part, the heat absorbing part of the first heat tube bends and is combined with the pedestal, the heat dissipating part of the first heat tube extends from the end of the heat absorbing part and penetrates the heat dissipating fins, and the heat absorbing part and the heat dissipating part of the first heat tube are not on the identical surface; the heat absorbing part of the second heat tube is connected with the pedestal and is positioned on the inner side of the forniciform heat absorbing part of the first heat tube, while the heat dissipating part of the second heat tube extends from both ends of the heat absorbing part of the second heat tube and penetrates the heat dissipating fins, in addition, at least a heat dissipating part of the first heat tube is arranged among the heat dissipating part of the second heat tube. The heat tube can distribute the heat from the pedestal to the middle part and both ends of the heat dissipating fins, which effectively accelerates the heat to outside and increases the heat dissipating ability for the heat tube heat dissipating device.

Description

Heat-pipe radiating apparatus

Technical field

The present invention relates to a kind of heat abstractor, be meant a kind of heat-pipe radiating apparatus of cooling electronic components especially.

Background technology

Along with electronic industry constantly develops, the speed of service of electronic components such as central processing unit and overall performance constantly promote, its caloric value increases thereupon, on the other hand, the integrated level of electronic component is deepened day by day, volume is more and more littler, so its heating problem is also just more outstanding, makes industry use the heat abstractor of metal solid heat radiation can't satisfy the radiating requirements of high-end electronic component merely.

For this reason, industry is brought into use the heat abstractor that has heat pipe.Heat pipe is mainly to be made up of an amount of hydraulic fluid (as water, alcohol, acetone etc.) in the capillary structure that is provided with on vacuum-packed tubular shell, the inner walls (as powder sintered thing, groove structure, screen net structure etc.) and the housing of packing into thereof.Heat pipe is to be heated, to cool off by hydraulic fluid to carry out that gas, liquid two phase change are inhaled, thermal discharge reaches the heat transfer purpose, and is fast and heat transfer distances is long is used widely owing to Heat Transfer of Heat Pipe on Heat Pipe speed.

Heat-pipe radiating apparatus commonly used comprises a base, two heat pipes that contact with this base that are used for the contact heating electronic component and is located at some radiating fins on this base.This base is provided with groove, these some radiating fins are provided with perforation, heat pipe comprises the evaporation part, be parallel to the condensation part of this evaporation part and connect the connecting portion of this evaporation part and condensation part, this evaporation part, condensation part are all linear, this evaporation part is bonded in the groove of base, and the condensation part is bonded in the perforation of radiating fin.During work, base absorbs the heat that heat-generating electronic elements produces, wherein the part heat directly is passed to radiating fin by this base and is distributed to surrounding space, another part heat via the evaporation part of heat pipe from this base be passed to radiating fin from pedestal part far away so that be distributed to surrounding space.Yet no matter heat pipe commonly used bends how many times, and it all extends at grade, and consequently heat pipe can not obtain flexible Application: otherwise two heat pipe apart from each others, make the evaporation part far away from the thermal source center, be unfavorable for the absorption of heat; Two heat pipe close proximity make the condensation part too concentrated, are unfavorable for distributing of heat.In a word, adopt the heat pipe that extends fully at grade can not make the evaporation part of heat pipe concentrate on the base middle part simultaneously, the condensation part of heat pipe is appropriate to be uniformly distributed on the fin heat at interval.Therefore, the heat dispersion of heat abstractor can not get maximum lifting.

Summary of the invention

In view of this, be necessary to provide a kind of evaporation part of heat pipe that can make simultaneously to concentrate on the base middle part, and the appropriate heat that makes at interval in the condensation part of heat pipe is uniformly distributed in heat-pipe radiating apparatus on the fin.

Heat-pipe radiating apparatus of the present invention comprises a base, some radiating fins and connect first of this base and radiating fin, two heat pipes, each heat pipe includes endothermic section and heat unit, the endothermic section of described first heat pipe is crooked and combine with base, its heat unit is extended by the two ends, endothermic section and is passed radiating fin, the endothermic section of described second heat pipe connects base and is positioned at the inboard of the forniciform endothermic section of first heat pipe, and its heat unit is extended by its two ends, endothermic section and pass radiating fin, and at least one heat unit of described first heat pipe is arranged between the heat unit of described second heat pipe.

Compared with prior art, in this heat-pipe radiating apparatus because the bending of at least one heat pipe is not subjected to the restriction in coplane, therefore can do the bending of flexibility, thereby two heat pipes can be located in the middle part and the both ends of radiating fin, make the heat transferred that concentrates on the base middle part arrive the middle part and the both ends of radiating fin, and then heat is distributed on the entire heat dissipation fin equably outwards distributes effectively, the heat-sinking capability of this heat-pipe radiating apparatus is able to bigger lifting.

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

Description of drawings

Fig. 1 is the three-dimensional exploded view of heat-pipe radiating apparatus one embodiment of the present invention.

Fig. 2 is the part assembly drawing of Fig. 1.

Fig. 3 is the assembly drawing of Fig. 1.

Fig. 4 is the end view of Fig. 3.

Embodiment

See also Fig. 1 and Fig. 4, this heat-pipe radiating apparatus is used for being installed in circuit board (figure do not show) and goes up with to dispelling the heat on the heat-generating electronic elements such as (figure do not show) of the central processing unit on it.This heat-pipe radiating apparatus comprises a base 10, is located at the radiating fin combination 20 of these base 10 tops, is sticked and makes up 20 first and

second heat pipes

30,40 and plug the fan Fixture 50 and fan 60 that makes up 20 the place aheads to this radiating fin at this base 10 and radiating fin.This heat-pipe radiating apparatus also comprises and being incorporated on the base 10 in order to assist to fix the two button arms 70 of this heat-pipe radiating apparatus to the circuit board.

Base 10 is the metal plate of a high-termal conductivity, and it is roughly square.This base 10 has lower surface and the upper surface relative with this lower surface that is used to contact electronic component.These base 10 tops offer three parallel grooves 12,14 in order to ccontaining

heat pipe

30,40 in turn.Wherein two parallel grooves 12 are positioned at the centre on base 10 tops, and groove 14 is arranged near these base 10 1 sides, and these groove 14 length are roughly half of groove 12, extend to its middle part by these base 10 1 ends.Outwards extend horizontally away thickness, the location division 16 in order to cooperate with button arm 70 that a pair of thickness is thinner than base 10 in these base 10 both sides, each location division 16 is provided with two through hole 160.

Each radiating fin is made by sheet metal in the radiating fin combination 20, it comprises by sheet metal and is bent to form perpendicular to the heat sink 220 of base 10 continuously and is arranged on the radiating fin group 240 that is parallel to base 10 of heat sink 220 tops, and heat sink 220 is perpendicular to radiating fin group 240.Radiating fin group 240 the place ahead dual-sides are provided with slot 242, and radiating fin group 240 is provided with the through hole 244 that

heating tube

30,40 penetrates.The outermost fin of radiating fin group 240 extends to base 10 edges vertically downward and forms two baffle plates 246, forms the air duct 248 that air feed fan 60 air communication that blow out are crossed between each baffle plate 246 and the heat sink 220.The rear side of radiating fin group 240 goes out a wind deflector 249 to base 10 direction diagonally extendings, and these wind deflector 249 guiding blow to base 10 (as shown in Figure 4) through the air-flow of air duct 248.

First heat pipe 30 comprises the endothermic section 32 that is n shape substantially, a pair of heat unit 34 that extend vertically upward at 32 two ends from the endothermic section.This endothermic section 32 comprises first endotherm section 320 and second endotherm section 322 that is contained in the groove 14 that is contained in one of them groove 12.The length of second endotherm section 322 is less than length and the two distribution that is parallel to each other of first endotherm section 320.Each heat unit 34 of first heat pipe 30 is angled with the plane at these heat unit 32 places, and each heat unit 34 is perpendicular to the plane at these heat unit 32 places in the present embodiment.This heat unit 34 is located in the through hole 244 of radiating fin group 240.

Second heat pipe 40 takes the shape of the letter U substantially, a pair of heat unit 44 of comprise endothermic section 42,42 two ends being extended vertically upward from the endothermic section.This endothermic section 42 is contained in another groove 12, is folded between first endotherm section 320 and second endotherm section 322 of first heat pipe 30.This heat unit 44 is located in the through hole 244 of radiating fin group 240.

Button arm 70 comprises that the backstay 72 that can place in the base location division 16 reaches from the outward extending at an angle fastening bar 74 in backstay 72 two ends.Backstay 72 is provided with hole 76, passes the through hole 160 of location division 16 and the hole 76 on the backstay 72 by screw or rivet 90 etc. and will buckle arm 70 and be fixed to base 10 bottoms.Fasten bar 74 and be provided with through hole (figure does not show), this heat-pipe radiating apparatus is fixed on the circuit board thereby make things convenient for screw or rivet 90 etc. to pass.

Fan Fixture 50 comprises slender body 510, by extended relatively panel in body 510 both sides 520 and spacer 530.These panel 520 bottoms are provided with screw 525.

Fan 60 comprises square framework 62, and 62 4 jiaos of this frameworks are provided with perforation (figure does not show), and screw or rivet 80 etc. passes perforation and cooperates with screw 525 on the fan Fixture 50 this fan 60 is fixed on the fan Fixture 50.

Please be simultaneously referring to Fig. 2 and Fig. 3, base location division 16 is sticked on the backstay 72 of button arm 70.The endothermic section 32 of first heat pipe 30, the endothermic section 42 of second heat pipe 40 (figure does not show) be being contained in the groove 12,14 (figure does not show) on the base 10 of thermo-contact respectively.The heat unit 34 of first heat pipe 30 penetrates in the through hole 244 of radiating fin group 240 vertically and is arranged on the middle part and the end of radiating fin group 240.The endothermic section 42 of second heat pipe 40 penetrates in the through hole 244 of radiating fin group 240 vertically and is arranged on the both ends of radiating fin group 240.The flanging of heat sink 220 also respectively with the upper surface of base 10 and the lower surface thermo-contact of radiating fin group 240.Fan 60 is positioned on the fan Fixture 50 by screw or rivet 80.The spacer 530 of fan Fixture 50 is plugged in the slot 242 of radiating fin group 240 both sides, fan Fixture 50 is fixed on the place ahead of radiating fin group 240.

Please be simultaneously referring to Fig. 3 and Fig. 4, the heat unit 34 of first heat pipe 30 is positioned at the middle part and an end of radiating fin group 240; The heat unit 44 of second heat pipe 40 lays respectively at the both ends of radiating fin group 240, and the

heat unit

34,44 of two

heat pipes

30,40 roughly is divided into three zones with radiating fin group 240 at its length direction.Like this, the heat that two

heat pipes

30,40 will accumulate in base 10 middle parts is sent to radiating fin group 240 middle parts and both ends, and it is evenly distributed in the entire heat dissipation fin combination 20, is convenient to radiating fin group 240 and equably heat on it is outwards distributed.

Except that present embodiment, first and second endotherm section 320,322 of first heat pipe 30 also can be set to two parts of equal in length, and this moment, two heat units 34 of first heat pipe 30 were arranged between two heat units 44 of second heat pipe 40 simultaneously.

Claims

1. heat-pipe radiating apparatus, comprise a base, some radiating fins and connect first of this base and radiating fin, two heat pipes, each heat pipe includes endothermic section and heat unit, it is characterized in that: the endothermic section of described first heat pipe is crooked and combine with base, its heat unit is extended by the two ends, endothermic section and is passed radiating fin, the endothermic section of described second heat pipe connects base and is positioned at the inboard of the forniciform endothermic section of first heat pipe, and its heat unit is extended by its two ends, endothermic section and pass radiating fin, and at least one heat unit of described first heat pipe is arranged between the heat unit of described second heat pipe.

2. heat-pipe radiating apparatus as claimed in claim 1 is characterized in that: the line of described first and second heat pipe heat unit separately and the contact position of radiating fin intersects.

3. heat-pipe radiating apparatus as claimed in claim 1 is characterized in that: the endothermic section of described first heat pipe is n shape, and the endothermic section of this second heat pipe is located in the n shape endothermic section of this first heat pipe.

4. heat-pipe radiating apparatus as claimed in claim 3 is characterized in that: the endothermic section of described first heat pipe comprises two parallel-segment that are uneven in length.

5. heat-pipe radiating apparatus as claimed in claim 1 is characterized in that: each heat unit of described first and second heat pipe is parallel to each other.

6. heat-pipe radiating apparatus as claimed in claim 1 is characterized in that: described second heat pipe takes the shape of the letter U.

7. heat-pipe radiating apparatus as claimed in claim 1 is characterized in that: also comprise the heat sink between radiating fin and base, this heat sink has the vertical fin of some above-mentioned relatively radiating fins, and this fin combines with base.

8. heat-pipe radiating apparatus as claimed in claim 8 is characterized in that: the outermost fin of described radiating fin extends to form two baffle plates to the base direction.