TWI222345B - Heat dissipation sheet with larger contact area and its manufacturing method - Google Patents

Abstract

The present invention is related to a kind of heat dissipation sheet structure and its manufacturing method. The first punching tool is used to punch the predetermined position of the metal plate with a slanting angle so as to have a concave wave section having a downward peak face. After the first punching tool is retreated, the second punching tool, which is the same as the first punching tool, is used to punch the other predetermined position of the metal plate with a slanting angle opposite to that of the first punching tool so as to have another concave wave section. After that, through the similar manner, the third punching tool and the fourth punching tools are used alternately to punch the peak face of the corresponding concave wave section for correcting the shape so as to manufacture a heat dissipation sheet, in which the convex wave section connects the concave wave section and both sides of each convex wave section close up toward the center from upside to the downside, and the width of each concave wave section is gradually expanded from upside to the downside. Through the wider peak face of the concave wave section and the mutual connection of the peak face of each concave wave section, larger contact face is formed so as to have the capability of effectively increasing the entire heat dissipation efficiency.

Description

1222345 ------- Case No. 90107Q11 V. Description of the invention (1) --------- q____Amendment

The invention relates to a heat sink structure applicable to a microprocessor heat dissipation system and a manufacturing method thereof, and particularly to a heat sink structure capable of producing a large contact area and its original manufacturing method. The so-called radiator is generally used to install devices that are easy to generate heat. With the good thermal conductivity of the thermal device, the heat of the device can be quickly dissipated to maintain the performance of the device. Generally, The best heat dissipation effect is to install a cooling fan on the radiator. In addition, it is also possible to use cold (ice) water or refrigerant to cool the cooling pipe α. In any case, the radiator is in the cooling system of the device. The most basic and indispensable component i is especially important for many heat-prone electronic components. Taking the most common CPUs as an example, each type of processing speed CPU has different degrees of heat generation due to internal calculations. The faster the speed of C pu, the more demanding the heat dissipation efficiency. In the past, the processing speed of c Pu was not similar. Today, therefore, its heat dissipation problem can be easily solved by using a squeeze heat sink. However, in recent years, the development of cpu has been extremely rapid. The processing speed of the new generation CPu has been increased to 2.0 GMZ. Degree, the relative heat generation problem needs a heat sink with higher heat dissipation efficiency to solve. In addition, due to the popularity of notebook computers, the radiator has also been miniaturized with the trend of computer miniaturization. It can also be reduced, but its heat dissipation effect is also reduced, making it difficult to meet the actual heat dissipation requirements. In short, aluminum extruded heat sinks commonly used as cpu radiators in the past, even in high-efficiency cooling fans, With the combination, its heat dissipation efficiency is still limited by its inherent limitations, which will gradually be replaced by the newly launched wave plate radiator.

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Λ said to amend the previous paragraph 'This type of wave plate radiator is mainly composed of a seat and a heat sink fixed on the seat, the heat sink is a copper or aluminum metal sheet punched into a continuous square wave Or continuous sine wave shape, in which the continuous square wave fins have a flat surface, and a larger contact surface 2 can be obtained after assembly, which can effectively improve the overall heat dissipation effect. It is widely used. In the foot type, a continuous square wave or similar type of heat sink is used. Under the same volume, the surface for heat dissipation is much larger than the conventional aluminum extruded heat sink, and the passage for air circulation can also be made relatively. More and larger, {its dispersion efficiency is far higher than the conventional aluminum extrusion type radiator, and it has gradually been valued. In the past, this wave plate type radiator has been difficult to be accepted because of its high production cost. For the past two years, 丄 = The high-speed CPU's requirements for the heat dissipation efficiency of the radiator have been greatly improved, so that the use of Fushi wave plate radiators has gradually dawned and has great development potential. In the past few years, the above-mentioned wave plate government heaters have been devoted to the development of industry, such as bulletins 358862, 361651, 390460 ^ 390459 > 388809 > 417806 ^ 413352 > 409883 > 407757 etc. The heat sink's fins are mainly in the form of a continuous square wave, and the way they are placed on the base or the fixed object is the same as the type disclosed in the ninth figure of this article. Please note that the heat sink 10 is made by -A wave check Qiao = square wave I again 1 1 connected • Another wave check facing down and the same width as the square wave 1 π square wave # and 1 2 constitute a continuous square wave metal sheet, and its: ti : ί ί of equal width, due to Λ, I noticed that the contact surfaces of the heat sinks 1 were intermittent, and also touched, only the square wave band 1 2 mesh ^ facing up without contacting the seat Or the fixed object meets the face or is fixed when facing down

1222345

— Case No. 90, 7911 V. Description of the invention (3) Physical contact. Since the heat source is via the socket or the object ", the hot plate 10 is preferably in contact with the socket or the object: = Based on such considerations, the first consideration is that the width of i 2 is increased. As in the eighth figure, the eight bands of the heat sink 20 are used to increase the contact area between the heat sink and the seat or the fixed object. As described in the previous paragraph of the lower case, in the comparison of Figures A and 9, although the width of the square wave band 22 of the heat sink 20 disclosed in the first is larger, the contact area of the whole film 20 with the seat or the fixed object is wide. Larger than the heat sink i However, please note that the square wave band 2 1 with its wave-quine facing up has 5 fewer,

It smells that the total heat dissipation area of the heat sink 20 is greatly reduced, which makes it more efficient. Instead, it is not as good as the heat sink 10. In addition, the heat sink disclosed in the third and fourth figures in the case No. 388809, the lower band ( 2 ^ 『Wide and ^ stand closer to increase the contact area with the object to be fixed, but the upper section (2 1) is narrowed to make the total heat dissipation area, and at the same time the upper band 1 ( 2 1) There is no ventilation space and it is only a piece, so that its heat dissipation effect is reduced. In other words, under the same volume of the heat sink, if it is to increase the contact area with the support plate or the fixed object, it will usually be Reduce the wave band and greatly reduce its total heat dissipation area and ventilation space. If you want to increase the wave band to increase the total heat dissipation area or increase the ventilation channel, it will reduce the contact area with the support plate or fixed object. Therefore, how to provide ^ The innovative heat sink structure that captures the sum of the overall heat dissipation area and the number of air ducts, and can increase the contact area between the heat sink and the supporting plate or broken fixtures, is an earnest hope for the relevant industry. The, the present invention is based on data which is more than a decade of experience and

1222345 V. Description of the invention (4) Actively consider the solution

In other words, its composition, this relatively makes the concave wave to form ′ and borrows a finger. The other piece of structure with the number of segments changing lanes as a whole refers to the oblique thin plate, and is placed in order to punch the golden concave wave bands closer to the bottom before the oblique system consists of one and each so that each segment has a larger value. The improvement of the less is to maintain the thermal efficiency, and to derive the first. Among them, the forming is a thin plate, and the side of the convex wave gradually expands backward, and then it is a continuous wave. The convex surface of the convex wave band and the concave surface of the two wide wave bands, the contact surface, the heat conduction efficiency of the convex band does not significantly increase the entire heat sink due to the contact area. An important innovation is the root heat dissipation. The sheet punch and the second punch are pre-positioned at the two concave wave bands and the other convex wave bands with a forward oblique edge, and a first contact is used to push forward a dispersion with a larger contact area. The band-shaped sheet structure enters the ^ ^ band, followed by the wave check. The downward concave wave side is retracted from top to bottom, and the width is gradually expanded from top to bottom. Each concave band is connected to each other; Bearing or fixed The person who knots things is the purpose of the present invention :: the increase of the wave band surface increases the wave, and the entire heat dissipation surface is effectively saved due to the effective conduction efficiency: According to another claim of the present invention, according to the above-mentioned manufacturing method, the concave wave band is obliquely punched after the rotation, and the beveled edge is formed between the segments. Then, the Lisi punching tool will be connected larger, mainly punching towards the metal It is thin, and the first shape and the first area are in contact with the third concave wave band. The heat dissipation is firstly using the predetermined position of the metal plate that is advancing forward. The two punches are inclined toward the front and have two sides on the back. To the middle and just constitute the oblique side of the concave band forward by the punching tool. 345 345 345 皇 号 90107m 1 V. Description of the invention (5) A person who leans against a continuous and rapid film structure is the invention of the following ^ In order to make your review valley and its appeal, here are the following: Please refer to the 6th and 7th heat sinks. The manufacturer of the heat sink uses a suitable feeding device to advance; wait for the metal sheet 30 to advance 1, then Let the sheet metal 3 show in the picture If it has been punched out, the description will be drawn. In fact, one hole is pushed backwards to advance. 1 is used to form a heat sink for the fan to blow in cold air. The heat sink does not need this ventilation step. Omit; use one less to punch the metal sheet 3 0 by the punch A to obliquely punch the gold shown in the dotted line L 1 at the back, which just forms a front sheet with a beveled edge 3 and the punch A is retracted and the metal sheet 3 The sheet metal 30 is pushed to correct the above-mentioned purpose of making larger contact. The member can understand the preferred embodiment of the present invention and cooperate with the diagram. It is a large connection method, which can include the following steps. When the metal of the heat sink raw material reaches the predetermined position, it will be punched first and proceeded to the next dry slot. In the aspect of port 31, the next process is performed in the automated manufacturing process. In addition, the slot for the wind (see the slot of the sixth to improve its heat dissipation efficiency), this punch is sent to the first punch A. The position is a thin plate 3 0, and the result of the punching is about the concave wave band 3 2 of the 1st, and the forward is continued. The specific internal formula of the heat dissipation of the bit area sent to the second punch B is described in detail. The thin sheet 3 is placed toward the air outlet slot 3 'in the second. This is for the sake of' the punching & slot 3 shown in the figure). If the formed slot 31 is placed, the first position is about As shown in the second figure, and then—

Set time, H

1222345 Meaning ^ 90107911 V. Description of the invention (6) Punching tool B punches the sheet metal obliquely forward. ○ As shown by the dashed line L 2 in the figure, this stamping knot just forms a back edge 3 3 1 A concave wave ^ 3 2 and 3 3 and exactly one or two convex wave bands 3 4. Please note that the concave wave closer to the middle, one side of 3 2 and 3 3, and the convex wave # and 3 4 above. An air vent is formed (refer to the Shidang metal sheet 30 to continue forward, the aforementioned one successively punches out the concave wave bands 3 2 and 3 3, and the convex wave band 34 (refer to the third to fourth figures): wave 1 Between 3 2 and the concave wave band 3 3 is formed between the concave wave band 32 and the concave wave band 32 is shaped ， 2 2 ~ 二 J 5, specifically, the convex wave band ί /, the front hypotenuse 3 2 1 constitutes; The concave band 3 2 and 3 3. The advancement and operation of the convex moxibustion metal sheet 3 〇, the two punches are mainly tm ^ and the concave band 3 2 before the hypotenuse 3 band 3 3 after the hypotenuse 3 3 i lean forward, the point is about the punch point D of the front hypotenuse 3 2 1 and the concave wave band 3 2 is about the junction of the rear hypotenuse 331 and the joint, as shown in the third and fourth sections respectively; Schematic) After adding the above You can quickly modify Λ_a. Said to amend the stamping fruit, such as the notch on both sides of the concave band, the first figure of course, and of course, the position on both sides of the convex band is 3 5 and the fifth figure. 3 3, shown in the middle to each 3 1)); two punches one after another, note 3, 4, from the top to the real is shown in the first, and here it is close to the position is also followed to shape out It is intended that the punch C of the hypotenuse bands 3 4 and 3 5 and the fourth punch shoulder shaping after the depression and expansion are used, that is, 021 1 leans backward to make the third punch C The intersection of the interrogation plane and the intersecting plane of the 3rd concave wave band 3 3 • The sixth and seventh images are formed under the names of A to D in the figure

Page 9 1222345 V. The description of the invention I. The scoring of the hunger / the car has a large band structure of 1 band 片 ΐ ΐ Continued Bo Fengchao 3 5 then π Bo Fengchao 2 2 4, 3 5 The two sides are: one, the concave wave band 3 2 and the concave wave bands 3 2 and 3 face each other successively to increase their heat transfer rate. In addition, it is found from the seventh figure that the heat radiation of the present invention has the same heat dissipation area and area. The heat dissipation effect that is greater than the heat sink is better than the heat sink, and the above convex wave band has sufficient ventilation channels, which is the heat sink shown by it. In summary, the purpose of the present invention, and the winner of this invention Previously, the present invention has indeed complied with the radiating fins with a correction area, and the ordering radiating fins of the special radiating fins are connected by a concave wave band qq that is convex downward from a peak. — Concave wave band Composed of 3 2; every? The upper convex band is from the top to the bottom, and the width of the jade 3 3 is relatively large, so that the two open surfaces are made, and the concave bands 3 2 and 3 are incorporated into the contact surface. In the comparison with the eighth and ninth figures, the number of bands of "Myself in the film" is the same as that of the heat sink 10 and two: the contact of the bottom of the heat sink of the present invention / has a better heat conduction effect, which is its sheet 1 0 Of course, it is also far better than the two sides of the heat sinks 2 0j 4 and 3 5 are not merged to maintain the heat dissipation effect. It is also better than the one disclosed in the case No. 3 8 8 0 9. A special design has been disclosed to reveal the practical and progressive benefits of deep industrial applicability. The same or similar design has not been disclosed before. The patent elements are clear, and the application is made according to law. 疋 Page 10 1222345 Case No. 90107911_year A simple explanation of the month and day correction diagram (illustration of the diagram) The first picture is the original material (metal sheet) used in the scattered film. The second picture is the metal sheet with the groove V punched. The second picture is to represent the present invention. system One of the steps. The fourth picture is used to represent another step of the manufacturing method of the present invention. The fifth picture is used to represent the manufacturing method of the present invention. Among the other steps, the sixth figure is a perspective view of a heat sink made by the method of the present invention. The seventh diagram is a schematic diagram of a heat sink section made by the method of the present invention. The eighth diagram is a schematic diagram of a cross section of a conventional heat sink. The ninth diagram is a schematic diagram of a cross section of another conventional heat sink. (Illustration of drawing number) ( 1 0) (2 0) heat sink (1 1) (2 1) square wave band with crest up (1 2) (2 1) square wave band with crest down (2 1) Announcement above the band 388809 (2 8) Announcement No. 388809 in the lower band (3 0) sheet metal (3 1) groove Π (3 2) concave band with front hypotenuse (3 2 1) front hypotenuse (3 3) concave with rear hypotenuse Band (3 3 1) back hypotenuse (3 4) Convex band with both sides close to the middle (3 5) Convex band with both sides expanded from top to bottom (A) First punch (B) Second punch (C) First punch (D) The fourth punch

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Claims (1)

Case No. 1222345 6. Scope of Patent Application 10107911 Amendment 丄 、 一 — The convex band g Α is characterized by Relying on a heat sink of equal width, the concave wave band of ^ constitutes a proper distance of the wave band body, and the rain of the second and second complex wave bands, 俾 relative to the east concave band of 々 makes the concave wave ^ square leather 22 open upwards. J Li has a concave wave band with a wider surface and a longer concave wave with a larger contact surface. From the wave crest to the metal thin punch, the punch is used to make the concave wave to make the concave wave. 4 The metal is thinner than the metal punch to make the scale. The board is facing the front with the same inclination. The patented range of the band is determined by the manufacturing and transportation steps of the long side of the peak side and the short side of the peak side. The heat sink slashes backward, but moves side by side and leans forward and leans forward. The step of manufacturing and conveying the sheet punches the oblong punching backward, but the surface with the larger contact area described in the first phase of the trend is recessed downward to form a recess with an appropriate depth, and the recessed surface It is an open slot, which is conducive to the blowing of air. The method includes: 9 steps of a concave band with a front hypotenuse; obliquely punching forward the next step with a rear hypotenuse; and steps. Method, which includes: step scales of mouth; step of concave band with front hypotenuse; obliquely forward forward to next step with rear hypotenuse 1222345 _Case No. 90107911_ Years of Amendment_ VI. Patent Application Steps for concave bands; Steps for making front oblique edges of concave band lean back; and Steps for making oblique edges of concave band lean forward. 5. The heat sink manufacturing method according to item 3 or 4 of the scope of patent application, wherein after the step of punching by the punch, it is possible to form a kind between the concave wave band and the next concave wave band. Both sides of the convex band close to the middle, and the oblique side before the concave band and the oblique side after the next concave band do not form another convex band that gradually expands downward. 6. The method for manufacturing a heat sink as described in item 3 or 4 of the scope of patent application, wherein the step of leaning the front hypotenuse of the concave band backward is to use a suitable punch to punch the front hypotenuse and the concave at an appropriate angle. Junction at the bottom of the band. 7. The method for manufacturing a heat sink as described in item 3 or 4 of the scope of patent application, wherein the step of leaning the back oblique edge of the concave band forward is to use a suitable punch to punch the back oblique edge and the oblique edge at an appropriate angle. The intersection of the bottom of the concave band. Page 13