CN100364079C

CN100364079C - Heating radiator and method for making same

Info

Publication number: CN100364079C
Application number: CNB2004100153751A
Authority: CN
Inventors: 张俊毅
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2004-02-12
Filing date: 2004-02-12
Publication date: 2008-01-23
Anticipated expiration: 2024-02-12
Also published as: CN1655344A

Abstract

The present invention relates to a radiator which comprises a base and a plurality of radiation fins, wherein a plurality of engagement grooves are arranged on one side of the base; the opening direction of the engagement grooves is approximately parallel with the base; each radiation fin comprises a radiation part and an engagement part bent out of the bottom end of the radiation part; the engagement parts and the engagement grooves are in interference fit. A manufacture method of the radiator has the steps that the base is provided; a plurality of engagement grooves are arranged on one side of the base; a plurality of radiation fins are provided; each radiation fin comprises one heat radiation part and one engagement part bent out of the bottom end of the radiation part; the engagement parts of the radiation fins are punched in a direction parallel with the base, so the engagement parts are fixed in the engagement grooves and are in interference fit with the engagement grooves.

Description

Radiator and its preparation method

[technical field]

The present invention relates to a kind of Radiator and its preparation method, refer in particular to a kind of be applied to electronic element radiating exempt from welded radiator and manufacture method thereof.

[background technology]

Along with the fast development of electronics and information industry, electronic component disposal abilities such as central processing unit are strengthened day by day, and the heat of generation all increases with it, and the radiator of its adapted is also in continuous improvement.People all know, under equal pedestal area, then radiating effect was good more when the many more and fin of fin quantity was big more, and promptly the big more then radiating effect of radiator surface area is good more.The thickness of fin is got over Bao Yuehao in theory, can improve the quantity of fin on the unit pedestal area like this, increase radiator surface area, but thin fin is difficult for making in integrated mode, so the compound mode between fin and pedestal is very important for the heat dispersion that improves radiator.

Chinese patent is announced 2534773Y number and is disclosed a kind of welded radiator, and this radiator comprises a pedestal and is arranged at groups of fins on the pedestal, passes through solder joints between pedestal and groups of fins.This radiator is because fin and pedestal are made the fin of dying respectively can do thinlyyer, increase the radiator heat-dissipation area significantly, but the weld interface thermal resistance is bigger, be unfavorable for that heat passes to fin from pedestal, influence radiating effect, and the method by welding engages and is unfavorable for a large amount of productions between fin and pedestal.

The Taiwan patent announcement discloses a kind of insertion type radiator No. 353516, comprises a pedestal and one group of fin.The plate face of this pedestal one side is provided with the slot of some parallel its lateral margins, each slot is respectively arranged with a fin, all form portion between a groove between adjacent slot, portion is provided with a V-type groove every between a groove, be out of shape external-open for a plate body toward its central punching press, make it to be fixed in the slot with the fin that squeezes portion both sides between arrival slot.Thereby the fin of this radiator also can be done than the thin area of dissipation that increases, but its fin is to engage with pedestal to squeeze the mode of supporting, contacting area less being difficult between fin and pedestal passes to heat fin and influences radiating effect from pedestal, on the other hand, when fin density, when highly all big, be used for the easy and fin generation interference of plate body of punching press V-type groove, increase manufacture difficulty and cost.

For the radiating effect that makes radiator strengthens, make the cooling surface area of radiator big, interface resistance is little, and should pursue in the radiator manufacturing easily manufactured, cost is low, above-mentioned common heat sink all has its shortcoming to remedy.For this reason, how to provide the radiator that a kind of area of dissipation is big, interface resistance is little, easily manufactured, with low cost to become problem anxious to be solved.

[summary of the invention]

The object of the present invention is to provide that a kind of processing procedure is simple, good heat dissipation effect exempt from welded radiator and manufacture method thereof.

Radiator of the present invention comprises a pedestal and some fin.This pedestal one side is provided with some engaging grooves, and fin comprises a radiating part and the junction surface, junction surface and the engaging groove interference fit that go out from the bending of radiating part bottom.

The manufacture method of radiator of the present invention may further comprise the steps: a pedestal is provided, and this pedestal one side is provided with some engaging grooves; Some fin are provided, and each fin comprises a radiating part and the junction surface that is gone out by the bending of radiating part bottom; Along the junction surface of parallel pedestal direction punching press fin, the junction surface is placed in the engaging groove and with the engaging groove interference fit.

Compared with prior art, the fin of radiator of the present invention is fixed on the pedestal through the punching press that is parallel to the pedestal direction successively, thus can not interfere between fin and mould, thus reduce manufacture difficulty; On the other hand, the fin of radiator of the present invention and pedestal interference fit avoid welding the bigger problem of median surface thermal resistance, have better radiating effect.

The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.

[description of drawings]

Fig. 1 is that fin of the present invention engages schematic diagram with the pedestal punching press.

Fig. 2 is that fin of the present invention engages the back schematic diagram with the pedestal punching press.

Fig. 3 is the front view of radiator first embodiment of the present invention.

Fig. 4 is the end view of fin second embodiment of radiator of the present invention.

Fig. 5 is the end view of fin the 3rd embodiment of radiator of the present invention.

[embodiment]

Please refer to first embodiment of Fig. 1 to radiator of the present invention shown in Figure 3, this radiator comprises some fin 10 and a pedestal 20, and fin 10 all is to be made by the punching press of heat conductivility good metal material with pedestal 20.Each fin 10 comprises a radiating part 11 and a junction surface 12 that is gone out by the bending of radiating part 11 bottoms.In the present embodiment, it is trapezoidal that the cross section at junction surface 12 slightly is, and comprises three matching surfaces, and promptly with radiating part 11 upper surface 13, front end face 15 and a bottom surface 14 at angle, wherein front end face 15 not only can be the plane but also can be made into curved surface; Pedestal 20 1 sides are provided with some engaging grooves that are parallel to each other 22, the opening direction of these engaging grooves 22 is parallel with pedestal 20, and it is similar that its cross section is the transverse shape at junction surface 12 of trapezoidal and fin 10, also comprise

upper surface

23,21 3 matching surfaces of front end face 24 and bottom surface, after punching press these three matching surfaces respectively with three matching surface interference fit of fin 10, by plastic deformation of metal fin 10 is fixed on the pedestal 20.Wherein, the slightly surface of inclination can be made in

bottom surface

14,21, and the junction surface 12 that helps fin 10 that play the guiding role engages with the engaging groove 22 of pedestal 20.

The transverse shape at the junction surface 12 of the fin 10 of radiator of the present invention is not limited in trapezoidal, can also be other shapes such as rectangle, triangle, and is corresponding therewith, and the engaging groove 22 of pedestal 20 should be made the structure that has similar cross section to junction surface 12.As Fig. 4 and Figure 5 shows that other two kinds of structures at junction surface 12 of the fin 10 of radiator of the present invention.

The manufacture method of radiator of the present invention is: a pedestal 20 is provided, and these pedestal 20 1 sides are provided with some engaging grooves 22, and this engaging groove 22 comprises several matching surfaces, and its opening direction slightly is parallel with pedestal 20; Provide some fin 10, the junction surface 12 that each fin 10 has a radiating part 11 and gone out by the bending of radiating part 11 bottoms; One fin 10 is arranged on the pedestal 20, and the junction surface 12 along parallel pedestal 20 direction punching press fin 10 is placed in the engaging groove 22 junction surface 12, and with engaging groove 22 interference fit, thereby this fin 10 and pedestal 20 are bonded into one.By above-mentioned steps, some fin 10 are installed on the pedestal 20 successively, thereby form radiator of the present invention.

As previously mentioned, the fin 10 of radiator of the present invention separates manufacturing with pedestal 20, thus fin 10 can make thinner, thereby significantly increase area of dissipation; Fin 10 is fixed on the pedestal 20 through the punching press that is parallel to the pedestal direction successively, so can not interfere between fin 10 and mould, thereby reduce manufacture difficulty, and the junction surface 12 of

fin

10 and 22 of the engaging grooves of pedestal 20 have several mating surface interference fit, it is big that

fin

10 and 20 of pedestals contact area, not only can effectively reduce interface resistance and help heat is passed to fin 10 from pedestal 20.

Therefore, Radiator and its preparation method of the present invention can overcome the shortcoming of present common heat sink, and the radiator that a kind of area of dissipation is big, interface resistance is little, easily manufactured, with low cost can be provided.

Claims

1. the manufacture method of a radiator, may further comprise the steps: a pedestal is provided, and this pedestal one side is provided with some engaging grooves; Some fin are provided, and each fin comprises a radiating part and the junction surface that is gone out by the bending of radiating part bottom; Along the junction surface of parallel pedestal direction punching press fin, the junction surface is placed in the engaging groove and with the engaging groove interference fit.

2. the manufacture method of radiator as claimed in claim 1, it is characterized in that: the cross section of the junction surface of this fin and the engaging groove of pedestal is trapezoidal.

3. the manufacture method of radiator as claimed in claim 1, it is characterized in that: the cross section of the junction surface of this fin and the engaging groove of pedestal is rectangular.

4. the manufacture method of radiator as claimed in claim 1, it is characterized in that: the cross section of the junction surface of this fin and the engaging groove of pedestal is triangular in shape.

5. the manufacture method of radiator as claimed in claim 1, it is characterized in that: the opening direction of this engaging groove is parallel to pedestal.

6. radiator, comprise a pedestal and some fin, this pedestal one side is provided with some engaging grooves, fin comprises the junction surface that radiating part and this radiating part bottom are bent to form, this junction surface and described engaging groove interference fit, it is characterized in that: the opening direction of described engaging groove is parallel to pedestal.

7. radiator as claimed in claim 6 is characterized in that: the junction surface and the radiating part of this fin are perpendicular.

8. radiator as claimed in claim 6 is characterized in that: the cross section of the junction surface of this fin and the engaging groove of pedestal is trapezoidal.

9. radiator as claimed in claim 6 is characterized in that: the cross section of the junction surface of this fin and the engaging groove of pedestal is rectangular.

10. radiator as claimed in claim 6 is characterized in that: the cross section of the junction surface of this fin and the engaging groove of pedestal is triangular in shape.