CN202076250U - High-power fin cool-plate heat radiator - Google Patents
High-power fin cool-plate heat radiator Download PDFInfo
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- CN202076250U CN202076250U CN201120179874XU CN201120179874U CN202076250U CN 202076250 U CN202076250 U CN 202076250U CN 201120179874X U CN201120179874X U CN 201120179874XU CN 201120179874 U CN201120179874 U CN 201120179874U CN 202076250 U CN202076250 U CN 202076250U
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Abstract
The utility model relates to a high-power fin cool-plate heat radiator which is characterized in that the high-power fin cool-plate heat radiator is formed by assembling a plurality of heat-radiating units; each heat-radiating unit is a section material with a uniform cross section formed by extruding aluminum or copper; the section material with the uniform cross section is composed of a basal plate part and an upwardly-extended fin part on the basal plate part; the plurality of heat-radiating units are arranged in parallel in a width direction of the section material, and the basal plate parts of the plurality of heat-radiating units are pieced together and are connected into a whole through stirring and friction-welding. The high-power fin cool-plate heat radiator is simple to manufacture, the height of fins can be heightened, the thickness of the fins can be thinned, and the space between the fins after the heat-radiating units are pieced can be lessened so that requirements of high-power fins can be met to manufacture the fins with 25-40 folds.
Description
Technical field
The utility model relates to radiator, is specifically related to a kind of cold plate radiator.
Background technology
Radiator is usually used in the radiating and cooling of power component, many power components are arranged in the product of electron electric power industry, 5% ~ 8% power loss generation heat is in use arranged, component temperature is raise, operating state degenerates, and reliability reduces significantly until damage, 5 ℃ of the every risings of the temperature of certain temperature range internal power element, order of magnitude of reliability decrease, so the performance of radiator directly has influence on reliability of products.
In the prior art, roughly the fin on the substrate radiating surface constitutes the structure of cold plate radiator by a substrate and stationary arrangement.Can be divided into braze welding type, aluminium section bar one squash type and shovel wing formula etc. from the production method angle.
The braze welding type cold plate radiator is to produce substrate and fin earlier, by the overall vacuum soldering fin and substrate is welded then, and the vacuum welding energy consumption is big, cost is higher.
Aluminium section bar one squash type cold plate radiator is to adopt the extrusion modling of aluminium alloy one, its advantage is simple in structure, that but the thickness of its fin can't be done is thin (generally 0.8mm) at least, the height of fin can't be done height, that the spacing of fin also can't be done is little (generally 3mm) at least, promptly can't accomplish high power wing (times wing: i.e. the ratio of fin height and spacing of fin), the required metal consumption of the unit's of making area of dissipation is big, and radiating efficiency is low.
Shovel wing formula cold plate radiator is to go out fin with the cutter backing-off cutting on the substrate radiating surface, its shortcoming is that the height of the thickness of its fin thick (generally 3mm) at least, fin also can't be done height, the spacing of fin also bigger (generally reaching 10mm), the requirement that does not reach the high power wing more.
And,, improving radiating efficiency in order in the unit area of dissipation, to reduce metal consumption for radiator manufacturing firm, the high power wing is the target of pursuing always.
Summary of the invention
The utility model purpose provides a kind of high power wing cold plate radiator, can further reduce cost of manufacture on the basis that reaches the high power wing.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high power wing cold plate radiator, constitute by a plurality of heat-sink unit amalgamations, described each heat-sink unit is the uiform section section bar of aluminium or copper extrusion modling, and these cross section section bars are made of a fin portion that protrudes upward on baseplate part and the baseplate part; Described a plurality of heat-sink unit is arranged in juxtaposition on the section bar Width, with the amalgamation of baseplate part phase, and links into an integrated entity through the baseplate part of friction stir welding with a plurality of heat-sink units.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described " friction stir welding " is existing a kind of solder technology.Friction stir welding method is the same with conventional friction welding (FW). and friction stir welding also is to utilize frictional heat as welding heat source.Difference is: the friction stir welding welding process is to be stretched in the workpiece by the soldering tip of a cylindrical shape (welding pin), high speed rotating by soldering tip, make itself and welding work pieces material friction, thereby the material temperature that makes connecting portion raises softening, simultaneously material is carried out agitating friction and finishes welding.
2, in the such scheme, preferred version is: on the corresponding amalgamation face of baseplate part of described each adjacent heat-sink unit, the length direction of one upper edge uiform section section bars is established slot, another person's correspondence is established the strip hook, the corresponding grafting of strip hook with slot, and strip hook and slot with the inclined-plane that faces upward or downward against cooperation, when in the adjacent heat-sink unit one when being subjected to the active force of above-below direction, strip hook and slot are along described inclined-plane slide relative, adjacent heat-sink unit is drawn close mutually, constituted clamping structure between heat-sink unit with this.The effect of this clamping structure is: soldering tip changes into the active force that adjacent substrate portion is drawn close mutually to the part of the power that compresses of baseplate part during with friction stir welding, thereby make between the amalgamation face of baseplate part of adjacent heat-sink unit can be more near, there is not the gap, guarantees heat-transfer effect.
When considering actual friction stir welding, soldering tip is that the baseplate part bottom surface is acted on, thereby the top, gap of baseplate part is easier opens and becomes big, can make the bottom surface of baseplate part be deformed into cambered surface, so further preferred version is: the top that described slot and strip hook is arranged at baseplate part amalgamation face.
The utility model design principle and the effect of bringing are:
The cold plate radiator that the utility model will have one now resolves into the heat-sink unit of a plurality of band a slice fins, and heat-sink unit is the uiform section section bar of aluminium or copper extrusion modling, with these heat-sink unit phase amalgamations and it is integrally welded with friction stir welding.During making, as long as earlier heat-sink unit is one by one produced in extruding, then with their phase amalgamations on anchor clamps, with the mosaic welding of the technology of friction stir welding, promptly finished making again with them.Because heat-sink unit only is with a slice fin, it makes simple, and fin height can strengthen, fin thickness can be done thinly, and it is less that the spacing of the fin after each heat-sink unit amalgamation also can be made ground, promptly reaches the requirement of high power wing, can produce 25 times of wing～40 times wings.Owing to adopt friction stir welding technology that each heat-sink unit is connected, friction stir welding when welding temperature is relatively low, and residual stress or be out of shape lessly makes the distortion of the substrate integral body that baseplate part pieces together less, the welding before and welding process in little to the pollution of environment, also save the energy.And if adopt conventional bolt to connect each fin, and substrate must need to make ground than thickness, not so can't place bolt, and the connection of bolt is also unreliable, there is bolt to become flexible in the occasion use that vibrations are arranged, the gap of the amalgamation face of making is strengthened, thereby has influence on the heat-transfer effect of substrate, influences radiating efficiency.
Because further the utility model has designed the clamping structure between heat-sink unit, effect is that soldering tip changes into the active force that adjacent substrate portion is drawn close mutually to the part of the power that compresses of baseplate part during with friction stir welding, thereby make between the amalgamation face of baseplate part of adjacent heat-sink unit can be more near, more can guarantee not exist between amalgamation face the gap, thereby improve heat-transfer effect.And, the distortion minimum that has also guaranteed to weld metacoxal plate, camber can not arch upward.
Description of drawings
Accompanying drawing 1 is the utility model embodiment heat-sink unit structural representation;
Accompanying drawing 2 is the utility model embodiment overall structure schematic diagram;
Accompanying drawing 3 is the elevational schematic view of accompanying drawing 2;
Accompanying drawing 4 is the clamping structure schematic diagram between the utility model embodiment heat-sink unit;
Accompanying drawing 5 is the schematic diagram one during friction stir welding in the utility model embodiment manufacturing process, and this figure represents the front of the utility model embodiment;
Accompanying drawing 6 is the schematic diagram two during friction stir welding in the utility model embodiment manufacturing process, and this figure represents the bottom surface of the utility model embodiment.
In the above accompanying drawing: 1, heat-sink unit; 2, baseplate part; 3, fin portion; 4, strip thorn; 5, slot; 6, strip hook; 7, inclined-plane; 8, soldering tip; 9a, the first road friction stir welding; 9b, the second road friction stir welding; 9c, the 3rd road friction stir welding; 10, Z is to support plate; 11, pedestal; 12, X is to clamping face; 13, Y is to clamping face.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: shown in accompanying drawing 1～accompanying drawing 6:
A kind of high power wing cold plate radiator is made of a plurality of heat-sink unit 1 amalgamations.
See shown in the accompanying drawing 1 that described each heat-sink unit 1 is the uiform section section bar of aluminium or copper extrusion modling, these cross section section bars are made of a fin portion 3 that protrudes upward on baseplate part 2 and the baseplate part 2.The cross sectional shape of baseplate part 2 is a rectangle, and the cross sectional shape of fin portion 3 is a vertical strip.Specifically as shown in Figure 1, the width in fin portion 3 cross sections upwards narrows down gradually from root, and the both side surface of fin portion 3 is provided with the strip thorn 4 of a plurality of projectioies, to increase surface area.And in the opposing two sides, the length direction of one side upper edge uiform section section bar is established slot 5, convexes with on the another side and establishes strip hook 6 on baseplate part 2 Widths of each heat-sink unit 1.
See shown in accompanying drawing 2, accompanying drawing 3 and the accompanying drawing 4 that described a plurality of heat-sink units 1 are arranged in juxtaposition on the section bar Width,, and link into an integrated entity through the baseplate part 2 of friction stir welding with a plurality of heat-sink units 1 with baseplate part 2 phase amalgamations.Described slot 5 and strip hook 6 promptly are positioned on the baseplate part 2 corresponding amalgamation faces of each adjacent heat-sink unit 1, strip hook 6 and slot 5 corresponding grafting, and strip hook 6 and slot 5 with the inclined-plane 7 that faces upward or downward (being illustrated as up) against cooperation, when in the adjacent heat-sink unit 1 one when being subjected to the active force of above-below direction, see accompanying drawing 4, strip hook 6 and slot 5 draw close adjacent heat-sink unit 1 along described inclined-plane 7 slide relative mutually, constitute the clamping structure of 1 of heat-sink unit with this.
Specifically, described slot 5 and strip hook 6 are positioned at the top of baseplate part 2 amalgamation faces.
In the manufacturing process, during friction stir welding, the soldering tip 8 of friction stir welding is to move along the direction (being the section bar Width of each heat-sink unit 1) perpendicular to the amalgamation face of each heat-sink unit 1, the multiple tracks of advancing in the bottom of baseplate part 2, show as accompanying drawing 3, beating dashed area among the figure is travel track 9a, 9b, the 9c of three road friction stir weldings, the travel track of this friction stir welding soldering tip can not manifest on the finished product of making, this is not the soldering as common melting, and the keyhole that stays when finishing of advancing of per pass friction stir welding soldering tip can remove through reprocessing.
Referring to accompanying drawing 4, shown in accompanying drawing 5 and the accompanying drawing 6, for ease of understanding, the following describes down the integral manufacturing process: a plurality of heat-sink units 1 are made in extruding earlier, then these heat-sink unit 1 phase amalgamations are inverted on the anchor clamps, these anchor clamps are clamping on the Width of the good heat-sink unit 1 of amalgamation He on the length direction to clamping face 13 to clamping face 12 and Y with X, compressing on the Width is expressed as F2 in trying hard to, compressing on the length direction is expressed as F3 in trying hard to, and, stretch in the anchor clamps and be provided with the spaced apart Z of polylith to support plate 10, these Z stretch between the fin portion 3 that places each heat-sink unit 1 and are supported on the end face of baseplate part 2 to support plate 10 correspondences, then, on the bottom surface of baseplate part 2, carry out friction stir welding, the soldering tip 8 of control friction stir welding moves along the direction (being the section bar Width of each heat-sink unit 1) perpendicular to the amalgamation face of each heat-sink unit 1, the parallel multiple tracks of on the baseplate part 2 that pieces together, advancing, Figure 6 shows that three roads, in the traveling process of the soldering tip 8 of friction stir welding, pushing heat-sink unit 1 successively, thereby the part of the power that the compresses F1 of 8 pairs of baseplate parts 2 of the soldering tip of friction stir welding is converted to the active force that adjacent substrate portion 2 is drawn close mutually, thereby make between the amalgamation face of baseplate part 2 of adjacent heat-sink unit more near, there is not the gap with integral body between the face that guarantees amalgamation face and face, thereby improves heat-transfer effect.And, the distortion minimum that has also guaranteed to weld metacoxal plate, camber can not arch upward.
In addition, the end face that is positioned at fin portion 3 both sides on the baseplate part 2 of described each heat-sink unit 1 has been designed one section height fall δ, see shown in the accompanying drawing 1, the end face that makes support plate 10 only support the baseplate part 2 of a heat-sink unit 1 keeps it motionless, and adjacent another heat-sink unit 1 has the upwards space on top, sees shown in the accompanying drawing 4.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (3)
1. high power wing cold plate radiator, it is characterized in that: be made of a plurality of heat-sink unit amalgamations, described each heat-sink unit is the uiform section section bar of aluminium or copper extrusion modling, and these cross section section bars are made of a fin portion that protrudes upward on baseplate part and the baseplate part; Described a plurality of heat-sink unit is arranged in juxtaposition on the section bar Width, with the amalgamation of baseplate part phase, and links into an integrated entity through the baseplate part of friction stir welding with a plurality of heat-sink units.
2. according to the described high power wing of claim 1 cold plate radiator, it is characterized in that: on the corresponding amalgamation face of the baseplate part of described each adjacent heat-sink unit, the length direction of one upper edge uiform section section bars is established slot, another person's correspondence is established the strip hook, the corresponding grafting of strip hook with slot, and strip hook and slot with the inclined-plane that faces upward or downward against cooperation, when in the adjacent heat-sink unit one when being subjected to the active force of above-below direction, strip hook and slot are along described inclined-plane slide relative, adjacent heat-sink unit is drawn close mutually, constituted clamping structure between heat-sink unit with this.
3. according to the described high power wing of claim 2 cold plate radiator, it is characterized in that: described slot and strip hook are positioned at the top of baseplate part amalgamation face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120179874XU CN202076250U (en) | 2011-05-31 | 2011-05-31 | High-power fin cool-plate heat radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120179874XU CN202076250U (en) | 2011-05-31 | 2011-05-31 | High-power fin cool-plate heat radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076250U true CN202076250U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120179874XU Expired - Fee Related CN202076250U (en) | 2011-05-31 | 2011-05-31 | High-power fin cool-plate heat radiator |
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| Country | Link |
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| CN (1) | CN202076250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966061A (en) * | 2017-11-27 | 2018-04-27 | 苏州惠琪特电子科技有限公司 | A kind of heat dissipation element |
-
2011
- 2011-05-31 CN CN201120179874XU patent/CN202076250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966061A (en) * | 2017-11-27 | 2018-04-27 | 苏州惠琪特电子科技有限公司 | A kind of heat dissipation element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20130531 |