CN101616568B

CN101616568B - Heat sink

Info

Publication number: CN101616568B
Application number: CN2008100681040A
Authority: CN
Inventors: 查新祥; 余业飞; 李树民; 徐淑媛; 郭哲豪
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: 2008-06-25
Filing date: 2008-06-25
Publication date: 2011-07-27
Anticipated expiration: 2028-06-25
Also published as: CN101616568A

Abstract

The invention discloses a heat sink, which comprises a radiating body, a fan and a guide piece, wherein the radiating body comprises a plurality of radiating fins which are arranged at intervals; the fan is connected to the radiating body; the guide piece comprises at least one guide sheet; and the at least one guide sheet extends from the outside of the radiating body to the center of the radiating body in an inclined form to guide the air flow generated by the fan to the center of the radiating body.

Description

Heat abstractor

Technical field

The present invention relates to a kind of heat abstractor, particularly a kind of heat abstractor that is used for to electronic element radiating.

Background technology

Electronic components such as central processing unit all will produce a large amount of heat in normal running, if the heat of untimely its generation of eliminating will cause accumulation of heat to cause that temperature raises, and have a strong impact on the normal operation of electronic component.For this reason, industry is usually at these heat-generating electronic elements mounted on surface one heat abstractors, with auxiliary its heat radiation.

Known construction for heat radiating device generally includes a radiator and a fan, this radiator comprises a pedestal and the some radiating fins that are arranged on this pedestal, this pedestal and thermal source are sticked to absorb heat and to be transmitted to radiating fin, this fan is installed on the above-mentioned radiating fin, and the air-flow that is blowed downwards by fan further distributes the heat on the radiator.But, because heat-generating electronic elements such as central processing unit is little and be positioned at the center of this pedestal than the area of radiator base usually, cause this center temperature higher, and that fan radially relies on outside wind speed imperial palace crosswind speed is little, especially slowly even remain in a standstill over against the air current flow of the radiator center of fan hub region, thereby formation dead band, the heat that air-flow in this dead band carries difficulty distributes, further cause radiator center heat accumulation, become a high-temperature region, have a strong impact on the heat dispersion of heat abstractor.

Summary of the invention

In view of this, thus be necessary to provide a kind of tool to avoid forming the heat abstractor that the high-temperature region promotes radiating effect than uniform air flow.

A kind of heat abstractor, comprise a radiator, a fan and a conducting element, this radiator comprises some spaced radiating fins, this fan is connected on this radiator, this conducting element comprises at least one guide vane, and this at least one guide vane is skewed and extends to radiator central authorities from the outside of radiator, with the air-flow guiding radiator central authorities that fan is produced.

A kind of heat abstractor, comprise a radiator, one fan and a conducting element, this radiator comprises a plurality of radiating fins that are provided with at interval, this fan is arranged on the radiator and to radiator air-flow is provided, these radiator central authorities are provided with a fluting, this conducting element is arranged on the radiator over against the position of slotting, this conducting element comprises the framework of a hollow, each end all is provided with at least one guide vane on the opposite end of this framework, this guide vane is housed in the fluting and is skewed central authorities to radiator from the outside of radiator and extends, and this guide vane is with the air-flow of the fan middle part from the both sides guiding radiator of radiator.

Compared with prior art, the present invention adopt have the conducting element that is the skewed guide vane that extends to radiator central authorities with fan blow to radiator in the outer part the air-flow of part cause radiator inside, thereby add strong convection, improve radiating effect.

Description of drawings

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

Fig. 2 is the three-dimensional combination figure of radiator and conducting element among Fig. 1.

Fig. 3 is the three-dimensional cutaway view of Fig. 2.

The schematic perspective view of the conducting element that Fig. 4 is adopted for heat abstractor second embodiment of the present invention.

Embodiment

See also Fig. 1 to Fig. 3, heat abstractor of the present invention comprises a radiator 10, a conducting element 20, two heat pipes 70, a radiator fan 90 and two fan fixing members 80.

This radiator 10 comprises a base plate 12 and a radiator 14, and radiator 14 is located at base plate 12 tops, comprises some spaced radiating fins 140, but 140 of radiating fins form the runner that the air flow stream of air feed fan 90 generations is crossed.Radiator 14 central authorities form a vertical fluting 142 along the direction perpendicular to radiating fin 140, and this fluting 142 is perpendicular with runner and be connected.Radiator 14 is somebody's turn to do fluting 142 symmetries relatively, and respectively forms a through hole 143 in fluting 142 both sides.This fluting 142 does not run through the bottom of radiator 14, radiator 14 bottom center form a linkage section, form two semi-circular recesses 144 in the linkage section below, two grooves, 144 places on the corresponding radiator 14 in base plate 12 tops are provided with two semicircle accepting grooves 120, and this two groove 144 and two accepting grooves 120 form two circular recesss in the combination back.Each heat pipe 70 comprises a condensation segment and an evaporation section, its condensation segment is located in the through hole 143 of radiator 14, evaporation section is contained in base plate 12 and radiator 14 formed two circular recesss, and fan fixing member 80 is fixed on the radiator 14, and radiator fan 90 is bolted on the fan fixing member 80.

Conducting element 20 comprises a hollow rectangle framework 22, two flangings 24 and two guide vanes 26.Framework 22 central authorities form rectangle perforation 220.This two flanging 24 is located at the two ends of framework 22 and is extended to form downwards from the outside vertical of two minor faces of framework 22 respectively, and two guide vanes 26 are tilted to down from interior side direction framework 22 central authorities of this two minor face respectively and extend to form.The width of the width of this two guide vane 26 and described fluting 142 is suitable, and forms certain distance between the end of two guide vanes 26.This conducting element 20 can be formed by the sheet metal component integrated punching, also can wait other modes to make by welding.

During assembling, with the center of this radiator 14 of centrally aligned of conducting element 20, among the space that two flangings 24 of conducting element 20 are inserted between the two adjacent radiating fins 140, so that conducting element 20 is fixed on the radiator 14.The perforation 220 of conducting element 20 is over against described fluting 142, and fan 90 is positioned at radiator 14 tops, and its central authorities are over against the top of conducting element 20.So, when fan 90 runnings, most of air-flow that fan 90 produces enters the runner of 140 of radiating fins, and only small part enters in the fluting 142.Guide vane 26 is positioned at fluting 142, its top is positioned at two outer ends of radiator 14, and extend at the middle part that is tilted to radiator 14 along the direction away from fan 90, thereby the air blast in the radiator 14 close outsides is guided to radiator 14 inboards, the air blast at 142 two ends of being about to slot is directed at radiator 14 central high-temperature regions, thereby add strong convection, improve radiating efficiency.

Figure 4 shows that the conducting element 40 that heat abstractor second embodiment of the present invention is adopted.Conducting element 40 comprises a rectangle hollow framework 42 equally in the present embodiment, and the outside of 42 liang of minor faces of this framework extends to form a flanging 44 respectively vertically downward certainly.With the foregoing description differently be: be tilted to down to these framework 42 central lower respectively from the inboard of 42 liang of minor faces of this framework and extend to form a guide vane group 46, this guide vane group 46 comprises first guide vane 461, second guide vane 462 and the 3rd guide vane 463, and the beam overall of this guide vane group 46 is no more than the width of described fluting 142, can be contained in the described fluting 142 to guarantee this guide vane group 46.Wherein, this first guide vane 461 is identical with the angle of inclination of the 3rd guide vane 463, but the angle of inclination of second guide vane 462 and described first guide vane 461 and the 3rd guide vane 463 are inequality, the angle of inclination of this second guide vane 462 is less than the angle of inclination of first guide vane 461 or the 3rd guide vane 463, and promptly the end of second guide vane 462 is higher than the end of first guide vane 461 and the 3rd guide vane 463.So, not only the air-flow at fluting 142 two ends can be directed at centre, add strong convection, can also increase air-flow unrest degree, promote heat exchange effect.

By above-mentioned two embodiment as can be known, guide vane can be one, two or more, specifically how much quantity can decide as circumstances require.In addition, the effect of flanging is to be used for the location, if directly that the framework of conducting element is gluing on radiator or the fixing conducting element of the mode by welding, these situations are next to need not to be provided with flanging, does not give unnecessary details at this.

Claims

1. heat abstractor, comprise a radiator, a fan and a conducting element, this radiator comprises some spaced radiating fins, this fan is connected on this radiator, it is characterized in that: this conducting element comprises at least one guide vane, and this at least one guide vane is skewed and extends to radiator central authorities from the outside of radiator, with the air-flow guiding radiator central authorities that fan is produced.

2. heat abstractor as claimed in claim 1 is characterized in that: this conducting element comprises some guide vanes, and these some guide vane symmetries are positioned at the both sides of this conducting element, and these some guide vanes are respectively from the central diagonally extending of two side direction radiators of this conducting element.

3. heat abstractor as claimed in claim 2 is characterized in that: the every side of this conducting element comprises some guide vanes, is positioned at the angle of inclination difference of these some guide vanes of homonymy.

4. heat abstractor as claimed in claim 3 is characterized in that: be arranged in these some guide vanes of homonymy, the angle of inclination of the guide vane in the middle of being positioned at is less than the angle of inclination of the guide vane that is positioned at the outside.

5. heat abstractor as claimed in claim 1 is characterized in that: this conducting element comprises that one places the hollow framework on this radiator, and this at least one guide vane extends to form by framework is downward-sloping.

6. heat abstractor as claimed in claim 5 is characterized in that: the two ends of this framework extend to form a flanging respectively downwards, and this two flanging is buckled on the radiator and plays the role of positioning.

7. heat abstractor as claimed in claim 1 is characterized in that: form runner between the radiating fin of this radiator, this radiating fin central authorities form a fluting, and this fluting is connected with runner between radiating fin, and this at least one guide vane is positioned at this fluting.

8. heat abstractor as claimed in claim 7 is characterized in that: this fluting does not run through this radiator, and the bottom center of this radiator forms a linkage section, and this fluting is divided into two parts symmetrical with radiating fin.

9. heat abstractor as claimed in claim 1 is characterized in that: this conducting element is arranged on the radiator, and this at least one guide vane stretches to and is positioned at radiator.

10. heat abstractor, comprise a radiator, one fan and a conducting element, this radiator comprises a plurality of radiating fins that are provided with at interval, this fan is arranged on the radiator and to radiator air-flow is provided, it is characterized in that: these radiator central authorities are provided with a fluting, this conducting element is arranged on the radiator over against the position of slotting, this conducting element comprises the framework of a hollow, each end all is provided with at least one guide vane on the opposite end of this framework, this guide vane is housed in the fluting and is skewed central authorities to radiator from the outside of radiator and extends, and this guide vane is with the air-flow of the fan middle part from the both sides guiding radiator of radiator.