CN100533716C

CN100533716C - Heat radiator

Info

Publication number: CN100533716C
Application number: CNB2006100626059A
Authority: CN
Inventors: 杨波勇; 翁世勋; 陈俊吉
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: 2006-09-15
Filing date: 2006-09-15
Publication date: 2009-08-26
Anticipated expiration: 2026-09-15
Also published as: CN101146423A

Abstract

The invention discloses a heat dissipating device for cooling heat-generating electronic element, which includes a seat, a first heat dissipating part, a second heat dissipating part and a third heat dissipating part laminated in sequence; at least one heat pipe connects the seat with the second and the third heat dissipating parts in heat-conductive mode. The first heat dissipating part includes a plurality of heat dissipating fins arrayed at intervals, the second heat dissipating part includes a substrate and a plurality of heat dissipating fins extending from the substrate, and the third heat dissipating part includes a plurality of heat dissipating fins arrayed at intervals. The heat dissipating device can dissipate heat by a relative large area of the heat dissipating fins in each heat dissipating part; as gas flow passages are formed among the heat dissipating fins, heat on the heat dissipating fins can be removed by the forced gas flow so that relative higher heat dissipating effect can be produced by the heat dissipating device.

Description

Heat abstractor

Technical field

The present invention relates to a kind of heat abstractor, be meant a kind of heat abstractor that is used for electronic component especially.

Background technology

Present stage is because the central processing unit continuous lifting of electronic component ability to work and constantly diminishing of volume such as (CPU), industry generally uses the radiator with heat pipe to replace simple metal entity radiator in the past, come to satisfy the heat that distributes electronic component, make its be in can operate as normal temperature.

But heat-pipe radiating apparatus is a function of mainly utilizing remotely transferring under the situation that Heat Transfer of Heat Pipe on Heat Pipe speed is fast and the two ends temperature spread is less, overcome the bottleneck that simple metal solid conducts heat, with the fast speed belt of the heat of high-temperature region on the electronic component from and conduct to the distant site of radiator, improve the heat abstractor overall performance.Yet the shape of heat pipe, its layout on radiator and the combination of heat pipe and radiator have a significant impact for the performance of heat abstractor, so occur a lot of heat-pipe radiating apparatus that adapt to the various structures of different radiating requirements in the industry.

Summary of the invention

The present invention aim to provide a kind of good heat dispersion performance heat abstractor.

A kind of heat abstractor, comprise stacked successively base, first radiating part, second radiating part and the 3rd radiating part, at least one heat pipe is connected with second described base with the 3rd radiating part heat conductivity, described first radiating part comprises spaced some radiating fins, described second radiating part comprises some radiating fins that a substrate and substrate surface extend, and described the 3rd radiating part comprises spaced some radiating fins.

Compared with prior art, a part of heat on the base of described heat abstractor directly is passed to first radiating part, another part heat is sent to the second and the 3rd radiating part fast by heat pipe, the big area of dissipation of the several dissipation fins of each radiating part of process dispels the heat, and owing to form gas channel between these radiating fins, heat on the radiating fin can through the forced draft band from, thereby make heat abstractor obtain preferable heat dispersion.

Description of drawings

Fig. 1 is the three-dimensional exploded view of one embodiment of the invention heat abstractor.

Fig. 2 is the three-dimensional exploded view of part-structure among Fig. 1.

Fig. 3 is the three-dimensional assembly diagram of Fig. 1.

Embodiment

Following with reference to accompanying drawing, heat abstractor of the present invention is further specified.

Heat-pipe radiating apparatus of the present invention is to be used for being installed in circuit board (figure do not show) to go 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.See also Fig. 1 to Fig. 3, the heat abstractor of one embodiment of the invention comprises three heat pipes 50 that make progress stacked heat-conducting base 10, first radiating part 20, second radiating part 30, the 3rd radiating part 40 successively and above-mentioned base 10 is connected with three radiating parts, 20,30,40 heat conductivities.

This base 10 is metal plates of high thermal conductivity, and it is roughly rectangular.10 4 jiaos of ora terminalis of this base stretch out and are provided with fixedly ear 12.This base 10 has and is used for and the lower surface of electronic component contact and relative upper surface thereof, and this upper surface middle part position is parallel to be provided with the ccontaining groove 14 of several heating tubes 50, and these groove 14 shape of cross sections are semicircle shape (to call semi-circular grooves in the following text).

This first radiating part 20 by one first fins group 22 and be positioned at first fins group, 22 both sides laterally the second stacked fins group 24 form.Some first radiating fin, 220 horizontal stacked forming that first fins group 22 is vertically extended by some relative bases 10.Wherein, per first radiating fin 220 relies on the ora terminalis of base 10 and the middle part of relative ora terminalis forms several semi-circular indentation 222, these ora terminalis all bend in the same way and are extended with flanging, thereby form the gas channel of the both ends open of a determining deviation when stacked between adjacent first radiating fin 220 because flanging is replaced, and these flangings several grooves 26 (figure that relies on the groove of base 10 does not show) of heating tube 50 combinations have been combined to form at recess 222 places.Some second radiating fin, 240 horizontal stacked forming that second fins group 24 is vertically extended by some relative bases 10.Wherein, the position of groove 26 that per first radiating fin 240 relies on corresponding above-mentioned first fins group 22 in middle part of the ora terminalis of base 10 and relative ora terminalis thereof forms bigger rectangular recess 242, these recess 242 width are greater than several recess 222 diameter sums of this first radiating fin 220, these ora terminalis all bend in the same way and are extended with flanging, thereby because replacing, flanging forms the gas channel of a determining deviation when stacked between adjacent second radiating fin 240, and these recesses 242 have been combined to form a recess 28, so that get rid of the interference of the crooked position when assembling heat pipe 50.The groove that relies on base 10 of this first radiating part 20 and the groove 14 on the base 10 connect, and heat pipe is included in wherein for 50 1 sections.

This second radiating part 30 is aluminium extruded type radiators, it has a substrate 32 and substrate 32 upper surfaces extend spaced some radiating fins 34, these substrate 30 lower surfaces are provided with breach 36 with recess 28 positions of 20 contacts of first radiating part and corresponding first radiating part 20, and this lower surface is provided with the groove that the relies on second radiating part 30 24 corresponding semi-circular grooves 38 with above-mentioned first radiating part 20, so that the heat pipe that makes up correspondence is included in wherein for 50 1 sections.

The 3rd radiating part 40 is by parallel some radiating fins 42 vertical stacked the forming of relative base, 42 liang of relative side edge of each radiating fin bend in the same way and are extended with flanging 44, when stacked because replacing of flanging 44 and form the gas channel have with flanging 44 width equidistant from distance and both ends open between the adjacent radiating fin 42.Offer the perforation with contact edge 46 that heating tube 50 ends vertically penetrate on breach 36 positions of the 3rd radiating part 40 corresponding second radiating parts 30, the width of this contact edge is identical with flanging 44 width, thereby the inner surface of these contact edges is combined to form the cylindric contact-making surface that contacts with heat pipe 50 when stacked.The undermost radiating fin 42 of the 3rd radiating part 40 is resisted against radiating fin 34 tops of above-mentioned second radiating part 30, thereby forms some gas channels of both ends open between the radiating fin 34 of second radiating part 30.The openend direction of this second radiating part 30 and the gas channel of the 3rd radiating part 40 is identical with first radiating part 20.

This heat pipe 50 is roughly cylindrical, and it comprises endotherm section 51, linkage section 52, first heat release section 53 and second heat release section 54 that is bent to form successively.Wherein, the bending of endotherm section 51 1 ends extends to form linkage section 52, and linkage section 52 further extends first heat release section 53 parallel with endotherm section 51 to endotherm section 51 other end directions bendings, the further perpendicular distal of these first heat release section, 53 elongated ends extends to form second heat release section 54 from the direction bending, and this endotherm section 51, first heat release section 53 and second heat release section 54 are on same one side.This linkage section 52 is to be used to connect the endotherm section 51 and first heat release section 53, so that heat pipe 50 is walked around the side of first radiating part 20.These endotherm section 51 heat conductivities connect (as welding or heat-conducting glue bonding etc., to call connection in the following text) in the groove 14 of base 10 and the groove that relies on base 10 24 of first radiating part 20, be used for absorbing the heat on the base 10 and a part of heat conducted to first radiating part 20.This first heat release section 53 is connected in the groove that relies on second radiating part 30 24 of first radiating part 20 and the groove 38 of second radiating part 30, and the heat that is used for absorbing from endotherm section 51 conducts to connected radiating part and dispels the heat.The cylindric contact-making surface of the correspondence of the 3rd radiating part 40 is stretched out and be arranged in to this second heat release section 54 by the breach 36 of second radiating part 30, dispels the heat thereby the heat that endotherm section 51 absorbs conducted to the 3rd radiating part 40.Need to prove, present embodiment is the layout that example describes heat pipe 50 with three heat pipes, as shown in Figure 2, though three heat pipe 50 shapes are identical in the present embodiment, wherein a heat pipe 50 and other two heat pipes 50 place these in addition between two heat pipes 50 with symmetrical form.

As shown in Figure 3, the heat abstractor of present embodiment also comprises a fan 60, and it is fixed in a side of heat abstractor by two fixtures 70, is used for promoting the heat exchange between radiating fin and the air.This fixture 70 comprises the flat board 72 of one side to fan 60, and these flat board 72 lateral borders curve inwardly and are formed with cramp 74.The both side ends that relies on fan 60 of above-mentioned the 3rd radiating part 40 offers the catching groove 48 for cramp 74 embeddings of this fixture 70.Above-mentioned two fixtures 70 are hung from catching groove 48 button of the two side ends of the 3rd radiating part 40, and by screw etc. fan 60 are fixed on the flat board 72 of this fixture 70, because the connection of fan 60 and two fixtures 70 are difficult for breaking away from heat abstractors.

Certainly, the corresponding adjustment that the shape of the heat pipe quantity of heat abstractor of the present invention and shape or each radiating part and the distribution of radiating fin etc. according to demand all can be suitable.For example, heat abstractor two heat pipes that only need be symmetrical set; The endotherm section of several heat pipes distributes closeer and distribution first heat release section when relatively loosing, its second heat release section can not coplane in order vertically to pass the 3rd radiating part in the endotherm section of heat pipe and the plane at the first heat release section place, promptly the Plane intersects at the plane at first heat release section of heat pipe and the second heat release section place and endotherm section and the first heat release section place is on the axis of first heat release section; The radiating fin of first radiating part base relatively be arranged in parallel and the relative base of the radiating fin of the 3rd radiating part vertically is provided with, and promptly keeps the plane of radiating fin of first radiating part vertical with the radiating fin plane of the 3rd radiating part.

Claims

1. a heat abstractor comprises stacked successively base, first radiating part, second radiating part and the 3rd radiating part, at least one heat pipe is connected with second described base with the 3rd radiating part heat conductivity, described first radiating part comprises spaced some radiating fins, described second radiating part comprises some radiating fins that a substrate and substrate surface extend, described the 3rd radiating part comprises spaced some radiating fins, it is characterized in that: described heat pipe comprises the endotherm section of being located between the base and first radiating part, this endotherm section one end bending extends to form the linkage section of walking around the first radiating part side direction, this linkage section further bending extends to form first heat release section of being located between first radiating part and second radiating part, and this first heat release section bends to extend again and also vertically wears second heat release section that forms on the 3rd radiating part.

2. heat abstractor as claimed in claim 1 is characterized in that: the radiating fin of described first radiating part is vertical with the radiating fin of the 3rd radiating part.

3. heat abstractor as claimed in claim 2 is characterized in that: the relative base of the radiating fin of described first radiating part is vertically also transversely arranged, the parallel and vertical arrangement of the relative base of the radiating fin of described the 3rd radiating part.

4. heat abstractor as claimed in claim 1 is characterized in that: the endotherm section of described heat pipe, first heat release section and second heat release section are at grade.

5. heat abstractor as claimed in claim 1 is characterized in that: the Plane intersects at first heat release section of described heat pipe and the plane at the second heat release section place and the endotherm section and the first heat release section place is on the axis of first heat release section.

6. heat abstractor as claimed in claim 1 is characterized in that: this heat abstractor comprises two or more described heat pipes, and wherein a heat pipe is arranged on the heat abstractor with other heat pipe lateral symmetry form.

7. as each described heat abstractor in the claim 1 to 6, it is characterized in that: the both sides that described first radiating part relies on the base and second radiating part are equipped with the groove of corresponding ccontaining heat pipe

8. heat abstractor as claimed in claim 7, it is characterized in that: the groove that the surface that relies on first radiating part of described substrate is provided with first radiating part connects and the groove of ccontaining heat pipe, and the recess of corresponding first radiating part of this substrate is provided with the breach that heat pipe second heat release section is stretched out.

9. heat abstractor as claimed in claim 1 is characterized in that: all form gas channel in the same way between the radiating fin of described each radiating part, the position of corresponding these gas channel air intake vents is provided with a fan.