TW518927B - Method of combining heat dissipation fin plate with heat conduction pipe of micro heat sink and combined structure - Google Patents

Abstract

A method for combining heat dissipation fin plate with heat conduction pipe of micro heat sink and combined structure are disclosed in the present invention. In the invention, solidifying paste is coated at the periphery of heat conduction pipe of micro heat sink. Then, before the solidifying paste is solidified, heat dissipation fin plates having a central through hole with slightly larger contour size than that of cross section of heat conduction pipe and having protrusion fringe at the central through hole periphery are slipped at the periphery of heat conduction pipe. Finally, before the solidifying paste is solidified, two sets of pressing plates of two pressing molds are respectively inserted into the gap in between two pieces of heat dissipation plates; and a clamping and pressing process is performed toward the direction close to the heat conduction pipe so as to make the protruding fringe of heat dissipation fin plate be tightly joined to the periphery of heat conduction pipe.

Description

518927 V. Description of the invention (1) [Field of the Invention] The present invention relates to a method and a structure for combining a heat sink fin and a heat pipe of a micro radiator. [Motivation of Invention] At present, the combination of the heat sink fin and the heat pipe of the conventional micro radiator can be divided into the following two types: [First] The way that the heat sink fins are tightly sleeved on the heat pipe: Please refer to FIG. 4 As shown, the size (W1) of the wheel rubbing of the central perforation (231) of the heat dissipation fin (23) is smaller than the profile size (W2) of the cross section of the heat transfer tube (2 丨) [ie, ψ 1 < f 2] , Forcing the heat-dissipating sheet (23) through the periphery of the heat-conducting tube (21) in an interference fit manner. [Advantages of the first type] 1. Easy processing. 2. Processing can be completed at room temperature. 3. It will not cause "thermal damage" to the heat transfer tube (21). 4. It can be automated in large quantities and quickly. [Disadvantage of the first type] 1 When the heat dissipation fins (23) are to be penetrated one by one to make a tight interference between the two and match the outer edge of the heat pipe (21), 'the heat pipe (21) is firmly clamped. The second in the basin must use the clamp (28) to run the sleeve firmly, so the clamp (28; will = deform the heat dissipation sheet (23).…, One end of the official (21) is clamped 2. Due to the heat pipe (2 1) and scattered aluminum materials, soft texture and hot fins (23) are all 'copper or thermally conductive tubes (21) with better thermal conductivity during re-wrapping and heat dissipation

Page 4 518927 V. Description of the invention (2)

The rotor (2 3) is easily deformed. Often caused by the situation shown in section b—B in Figure 4 ', that is, the heat dissipation fins (23) are caused at the central perforation (231), and the cracks are deformed [as shown in Figure 5], while the heat pipe (21) It is also deformed because of being forcedly squeezed by the heat dissipation fins (2 3), so that the joints between the heat conducting tube (2 丨) and the heat dissipation fins (2 3) form gaps, and because there is no heat conducting medium to fill these gaps , So that the effect of heat conduction is greatly reduced.

3. The heat-conducting officer (21) and the heat-dissipating fins (23) are forced to cooperate with each other by mechanical force, and the heat-conducting pipe (21) and the heat-dissipating fins (23) are made of different materials. After undergoing many times of cold and heat alternation (that is, it is heated during work and cooled after work, it forms a cold and heat alternation effect). Due to the different coefficients of cold and heat expansion, the urgent joint effect between the two is lost. The heat transfer efficiency becomes worse, and the heat-dissipating fish piece (23) is caused to fall off from the heat pipe (21). [Second] The way to fill the solder paste between the heat dissipation fin and the heat pipe:

Please refer to Figs. 6, 7 and 8, the outline dimension (W1) of the central perforation (231) of the heat sink fin (23) is slightly larger than the outline dimension (W2) of the cross section of the heat transfer tube (21) [ie wi > W2, please also refer to Figure 8], and loosely fit the heat sink (23) around the periphery of the heat pipe (2ι) in a loose fit. The periphery of the central perforation (2 31) of the heat dissipation fin (23) is provided with a "projection" (232), and the width of the inner wall of the projection (232) and the peripheral edge of the heat transfer tube (21) is kept about 0.3 mm or more. Voids. Then fill the solder paste (26) into the void. Then, as shown in Fig. 6, put it in the oven (27) and bake it to 200t or more. After the solder paste (26) is melted Fill in the gap.

518927

V. Description of the invention (3) [of the second advantage of the shoulder edge ;;: the inner wall of the flange (232) of the fin 1 (23) and the heat pipe (21) around η = solder paste] are joined, not only the two The combination is stable and the heat transfer efficiency is high. [Second Disadvantage] ΙίΓ: Yes, the connection between the material and the copper material, but not the connection between the inscriptions, so the heat sink fin can only choose the copper material I, which is greatly restricted in the choice of materials. 2 · Since the solder paste (26) is very large, 'required welding = less need to delete more than the above], in addition, the solder paste (26) used 2 can only be added with flux, and the flux is small It is not easy to volatilize in the space 'cause the proportion of air or flux residue in the welding zone = large' cannot obtain the best heat transfer effect. Moreover, the cleaning of the flux is not easy, not only will cause the appearance quality to be poor, but also cause the manufacturing burden. Because the solder paste (26) must be heated to 20 (rc to be completely melted), this warm production causes extremely strict quality of the heat transfer tube (21). The demanding requirements, coupled with the demand of 1 volume & production, requires the use of a reflow furnace for heating, which is not easy to control the temperature, and it is often added to a temperature above 200 C. It is easy to cause thermal damage and deformation to the heat pipe (21). The production m2 quality and the manufacturing process both cause great confusion, and the manufacturing process cannot be simplified. [Objective of the present invention] In view of the foregoing problems, the present invention aims to provide a method that can achieve the following inventive objectives:% °

518927 V. Description of the invention (4) 1 · The micro-injection method provided by the present invention is “from the Bingzheng government”, the combination of the thermal fins and the heat transfer tube, and the combined structure, it does not require Using metal dazzle, it only needs to use the loose fit of the _ body to wear the loose fins 矣 κ + ^, euphoria ”, said Nai to put on the periphery of the heat pipe, and then tighten i: 接 'f Ϊ The hot fins are attached to the heat pipe in a flat joint, and then the cured glue part i is often flat. Therefore, the heat transfer between the heat sink and the heat pipe is conductive; :: The result :: also becomes extremely small, so the piece is connected with 2. ί == :; The heat sink of the micro radiator is combined with the heat pipe. , It also further-will cure the glue [such as probiotics]

Coated on the cooling fins and the door of the guide fin 1 ^ 1〗 $… Gong 胗 J 埶 Guide 埶 „Au…, you can fill the gap between the heat radiating fin i [at least ο · 1 ship The following], forming the pole 3. ί :: ϊ; The heat sink for the micro radiator and the guide tube ... Method and combination structure, the curing glue provided by it can be "caused by the difference between the expansion coefficient of the dagger" The difference between the tube companion and the tube companion = 4 makes it possible to dissipate heat at any time. The fins ... keep the best heat transfer effect, and the heat dissipation will not cause any thermal damage between the heat officials. . One piece of film and guide 4. The method and combination of the micro-radiator provided by the present invention, the combination of the s, and the heat conduction function, so; The combination of flattening ^ 乂 is enough to fill the gaps and joints between the thermal fins and the heat pipe, and also because the rabbit At Bis & m ..., 3 into one ^ to solidify the point between the heat pipes, use curing The glue on the heat-dissipating sheet is made with the guide garment (of course, the same material is also recognized: use a kind of material like j). For the entire group of radiator materials 518927, it is not limited by the material. The combination of the heat dissipation fins of the device and the heat pipe is a combination of loose fit and flattening. ^ The political, thermal fins and heat pipes cause any mechanical, appearance, and size to be more easily controlled. heat? The heat dissipation sheet and heat conduction line of S: Apply solidified glue to the periphery of the,,, and make the central perforation outline slightly larger and the center penetrate the fins. The protruding edge of the sheet that is sleeved on the heat pipe is oriented perpendicular to the fan 9 'Using the gap between the two sets of thermal transfer fins of the two compression molds, and losing pressure, the protrusions of the heat dissipation fins are joined. The method of combining with the heat pipe, the heat sink's fins and the heat-contained heat pipe; the periphery of the heat sink fin tube, the periphery of the above heat sink fin, and the direction perpendicular to the heat sink The method and the method of the invention, the destruction of the nature [the first step of the combination of the tube of the present invention: the second step: the third step: the above-mentioned combination of the cured tube of the tube of the present invention, the middle piece has The flanges are more diversified. The micro-coupling structure provided is not only not, but also its technical content.] It is intended to provide a method based on micro-heat dissipation at the periphery of the above-mentioned solidified than the transverse hole of the heat transfer tube. In the above table, the above-mentioned cured laminated sheet is used to guide the thermal edge and the heat pipe. The micro-radiator is oxygen-free to provide the structure. The micro-perforation can be used to form a heat-resistant pipe glue that is applied in the following steps. The heat dissipation of the large edge of the profile of the cross section before curing Thermal fins. Miniature loose-type heat sink package

518927 V. Description of the invention (6) The surface direction of the fin extends. As for the feature of the patent application of the present invention, the missing step of the above micro-radiator includes: the same structure, the combination structure of the film and the heat pipe, which is coated on the heat pipe. ^ # ^ ^-≫ The periphery of the heat pipe and the curing glue interposed: between the periphery of the heat pipe and the flange of the heat dissipation fin. Huazhi ^ ^ ^ ^ ^ The size of the perforated perimeter is the size of the contour of the guide tube, φ,, and $ μ & 5 Γ.,, And the outline of the central hole of the fin The sleeve is attached to the contour of the heat pipe attached to the cross section of the heat pipe. * Also [the embodiment of the present invention] Please refer to Figs. 1 to 3 for the second step. The method for combining the heat dissipation fin and the heat pipe of the micro radiator provided by the present invention is performed according to the following steps: First Procedure ... Apply the curing glue (22) to the periphery of the heat transfer tube (21) of the micro radiator [see Figure 1]. Before the curing glue (22) is cured, the outline size of the central perforation (231) (w0 is slightly larger than the outline size (W2) of the cross section of the heat pipe (21) [ie, wi > W2] and the central perforation ( 231) The heat dissipation fin (23) with a flange (232) on the periphery passes through the periphery of the heat pipe (21), wherein the flange (232) of the heat dissipation fin (23) is perpendicular to the heat dissipation fin (23) ) Extending in the direction of the surface [see Figure 2]. The third step is to use two sets of compression sheets (241) of two compression molds (24) and (25) before the curing adhesive (2 2) is cured. And (251) are inserted into the gaps between the two heat radiating fins (2 3) and (2 3) respectively, and

518927 V. Description of the invention (7) In the direction of the heat pipe (21), the pressure is approached, so that the protruding edge (232) of the heat dissipation fin (23) and the peripheral edge of the heat pipe (21) are tightly connected (see Figure 3) 〕. In the method a for affixing the heat dissipation fins (23) and the heat transfer tubes (21) of the above micro radiator, the curing glue (2 2) can be, for example, an oxygen-free glue. The present invention also provides a heat sink fin of a miniature heat sink and a micropipe heat sink including a heat pipe 散热器); a heat sink fin (23) with a central perforation (231), which can be sleeved on the heat pipe ( 2ι), the above-mentioned heat dissipation fin (23) has a protruding edge (2 32), is formed on the periphery of the center penetration = (231), and extends perpendicular to the surface of the heat dissipation fin (23). The patent application for the combined structure of the heat sink fin (23) and the heat pipe (2D) of the miniature heat sink is characterized by: ^ The above structure of the heat sink fin (23) and the heat pipe (21) of the subordinate government heater further includes : Curing glue (22), which is applied between the flanges (232) of the moon and the moon (= 2) in the heat pipe (2). The outline size (231) of the central perforation (231) of the transeptal fin (23) is slightly larger than the cross section of the heat transfer tube (21) before the dried edge of the ruler tube (21) (=: 乂 namely W1 > W2], and the outline of the center hole of the heat dissipation fin (23) is in the outline of the cross-section of the heat pipe (21) which has been bundled around the periphery of the heat pipe (21). It's close to the ground [Effects and features of the present invention] The present invention provides the following effects and features:

Page 10 V. Description of Invention (8)

The wide structure of the combination of the heat sink and the heat pipe of the miniature radiator provided by Ht. It does not need to use metal welding. It only needs to use — edge, and the heat sink (23) is put on the heat pipe (21). ) Zhou \ Using the central and repeated methods, the heat dissipation fins (23) and the heat transfer tube (21) flat patch (23): =: dagger glue (22) are tightly bonded, and it can be completed. Therefore, the heat dissipation super-gap is also equal to π, and the joint between the officials (21) is very flat and close to each other, and the heat transfer effect ΐίη, 't between the heat sinking Korean sheet (23) and the heat pipe (21) ΐ:: ϊ ΐ ί The manufacturing method will be deformed because the heat sink fin (23) is strongly torn. ΐ: guide 21 = price and caused at the central perforation (231) =: (『〇 and the joint between the heat sink 韩 ⑽ The formation of very large =, and during the processing, 'the heat pipe (21) must be clamped down to become a mechanical deformation of the heat pipe (21)', so that the heat conduction effect is greatly reduced U = the heat transfer fins and heat conduction of the provided micro radiator The combination of the coating and the bonding structure of the tube 'It also further-will further solidify the glue (such as oxygen scavengers) ΐίΐ heat dissipation' between the rotating piece (23) and the heat transfer tube (21), which can be completed and deleted below], forming an excellent Heat transfer effect.] Work gap ... °, 1

= In the first known manufacturing method, a strong return-through sleeve method is used. I grout any sealant between the caulk ί and the heat pipe [because any sealant will pass through the heat sink fin. Guide WLU Ma Ren17 radiating Korean sheet scraping], so the guide tube (21 ,,; nf in the process will be ... with 2 1) and the cooling fin (2 3) between the 518927 connection and heat dissipation [ie For work] The connection (2 3) is provided from the bonding joint so that the rubber filler (23) tube (21) can be used]. The qualitative limit will form very large voids, but it will not be effective in heat transfer. The heat dissipation fins and heat-conducting structure of the miniature heat sink, the curing glue (22) provided by it can be the gap between the sheet (23) and the heat-transfer tube (21) due to the deformation of the thermal expansion system, which not only makes the (2 3) and The optimal fins (23) and heat transfer tubes (21) are kept between the heat transfer tubes (21), and the joints of the invention description (9) must be filled with seam. Therefore, the method and The difference caused by the heat dissipation fins combined with the material can make the heat dissipation fins more efficient and the heat dissipation can be damaged. However, since the first (23) tube (21) is used to press the thermal fins alternately after the heat is applied, the method and method of the present invention, the solid radiating fins and heat conduction are also not affected by the conventional manufacturing methods of the materials, and cannot be used. Any of the fins (2 3) is heated during operation, and the work is lost due to the cold and thermal expansion coefficients, and then the heat conduction heat pipe (21) falls off. The structure of the micro radiator is' because the aforementioned looseness is enough to allow clearance and adhesion between the heat dissipation fins (2 3), and because different materials can be used with the heat transfer tube (2 1). 2 1) Unlike any joint sealant that has been filled after cooling for many times, it is cooled after cooling, which results in poor efficiency. The reheating fins are assembled with heat conduction, and the heat conduction pipe (21) can be cured and bonded, so the heat is dissipated. Made of course (homogeneous choices are more to use any combination of tube filling to buffer different numbers of different kinds of heat transfer effect at any time will cause any heat dissipation fins, so the alternating heat conduction will form 'cooling between the two will cause scattered tubes. A combination of flat glue (22) and fins (23) of the material are also modified, and

518927

518927 Brief description of the drawings [Simplified description of the drawings] Figure 1: This is a schematic diagram of the first step of the present invention. FIG. 2 is a schematic diagram of a second step of the present invention. FIG. 3 is a schematic diagram of a third step of the present invention. Figure 4: Schematic diagram of the only steps of the first conventional method. Fig. 5 is a partial enlarged view of the circled area 5 from Fig. 4. FIG. 6 is a schematic diagram of the first step of the second conventional method. Figure 7: Schematic diagram of the second step of the second conventional method.

FIG. 8 is a partially enlarged view of the circled area 8 from FIG. 6. 〔Numbering index in the diagram〕 21 heat pipe 22 curing glue 23 heat dissipation member 231 central perforation 2 3 2 flange 24 compression mold 241 compression piece 25 compression mold 2 51 compression piece 26 solder paste 27 oven 28 fixture

Page 14

Claims (1)

518927 Six applications for patent scope A miniature photo following steps% one step second step third step 2 · 3 · According to the application and a heat pipe a miniature micro heat radiation pipe; the heat sink fin is described as perpendicular to the heat sink and its characteristics are in (a) The above further implements the heat dissipation fins and guides of the solid heat sink:: heat conduction in the micro heat sink • the curing adhesive is cured at an inch larger than the center of the cross section of the heat pipe, and has a flanged edge of the heat pipe, which is vertical On the table of the heat-dissipating fins. · The method described in item 1 of the patent scope of the heat-conducting tube is inserted into the two sets of sub-simultaneous guide heat-pipe square pieces and the heat-sealed fin-cured group of compression-bonded pieces, respectively. The radiating fins and guides of the yoke include: The method of combining Μ heat pipes, before coating on the periphery of the tube, pass the center through the heat fins with a slightly larger perimeter, and extend the direction of the face of the fins; The two cooling fins of the two fins approach pressure loss, and the edges are tightly joined. The heat sink fin # of the micro radiator is made of oxygen-free glue. The combined structure of the heat pipe, in which the curing glue, the hole wheel temple ruler, and the middle sleeve are set on the gap between the guide flange and the clamping mold to make the heat dissipation fins have a middle * 7 丨 Η 乱 士 w perforation 'can be sleeved on The peripheral edge of the heat pipe, above ;: It is shaped on the peripheral edge of the central perforation and extends in the direction of the garment. In: Step: '' U ί The combination structure of the heat fins and the heat pipe, the gel is placed on the periphery of the guide. ' And ▼ ..., the periphery of S and the flange of the heat sink fin 518927 6. Between the scope of applying for patents; (b) The outline size of the central perforation of the heat sink fin is slightly larger than the outline size of the cross section of the heat sink before it is sleeved on the periphery of the heat pipe, and the outline of the center perforation of the heat sink fin After it has been sleeved around the periphery of the heat pipe, it is tightly attached to the outline of the cross section of the heat pipe. Page 16