TWI238751B - Cooling device and apparatus and method for producing thereof - Google Patents

Abstract

A cooling device for dissipate heat generated by an electronic device includes a heat sink and a heat pipe. The heat sink includes a base and a plurality of fins integrally extending from the base. The heat pipe and the heat sink are integrally formed in a mold. One end of the heat pipe is formed in the fins. The other end of the heat pipe is formed between the base and the fins.

Description

1238751

It relates to a kind of heat for dissipating heat generated by electronic components, and a method and equipment for manufacturing the heat pipe radiator. [Technical Field to which the Invention belongs]

Once many electronic components generate a lot of heat during operation, if the heat is not discharged in time, it will affect the stability of the electronic components during operation. To this end, the industry often installs a heat pipe radiator on the surface of the central processing unit to discharge heat in a timely manner. The known heat pipe heat sink is usually a combination of a heat pipe, a base and a heat sink. The base is attached to the electronic component, and one end of the heat pipe is fixed to it by interference fit (or welding, thermal adhesive). On the base, the other end of the heat pipe is threaded on the heat sink, and is fastened to the heat sink through interference fit (or welding, or thermal adhesive). However, this type of heat pipe radiator, ^, tube: base and heat sink are separately formed and then assembled together, and then two sets of molds are required, which not only increases the production process and the number of molds, but also reduces production efficiency. , Which increases the production cost; moreover, this kind of thermal official heat dissipation is that when its heat pipe, base and heat sink are connected together, there is inevitably a gap or a medium with low thermal conductivity between the elements, which reduces the effect and heat radiation. ^ ... In order to avoid the shortcomings of the above heat pipe radiators, in recent years, the industry has also introduced another type of heat pipe radiator. This type of heat pipe radiator is composed of a heat pipe and a radiator. The radiator includes a base and a heat sink. The base is integrally extended to form a plurality of heat plates. One end of the heat pipe is fixed on the heat sink base by interference fit (or welding, or thermally conductive adhesive), and then the heat pipe is bent into a ϋ shape so that the other end passes through. The interference fit (or welding, or thermal adhesive bonding) is fixed in the heat sink of heat sink 12387751 V. Description of the invention (2). However, this kind of operation is separated and then plugged in together, and at the same time; the need for a heater also requires the entire production process to be more complex and better to make it better. In addition, the heat pipe and the radiator ί :; Thermal moon pass is a medium with gaps or low thermal conductivity, which is not good.玖 ". The heat conduction effect and heat dissipation effect are still 'how to provide a simple manufacturing, and tube radiator and its manufacturing method and equipment 俜 A Xiliang f ..., 1 is the problem to be solved by the present invention [content ] ... The purpose of the present invention is to provide a heat pipe radiator in which a heat pipe and a radiator are integrally formed. This date = another-purpose is to provide a method for manufacturing the above-mentioned integrally formed heat pipe radiator. The present invention = further aims to provide the above-mentioned integral molding The heat pipe radiator manufacturing equipment of the present invention includes a heat pipe radiator and a heat pipe integrally formed with the radiator. The radiator includes a base and a plurality of heat sinks integrally formed with the base. One end of the heat pipe is formed on the base of the radiator, and the other end is worn! The heat radiating fins formed by the same body are formed by the heat sink. The manufacturing method of the heat radiating mushroom of the present invention mainly includes the following steps: A method for manufacturing the heat sink is provided. Mould for heat pipe radiator, the mould package

Page 5 1238751 V. Description of the invention (3). Including a mold base and two molds placed on the mold base, the inner shape of the two molds is adapted to the heat pipe radiator; a mold core is provided. It has a core that is compatible with the heat pipe; the fixed mold core is in the forming mold; the two forming molds are closed; the molten metal melt is poured into the mold; the mold is opened after cooling, and the blank of the heat pipe radiator is taken out _ Remove the mold core to form a pipe with first and second openings and communicate with the outside of the radiator; remove the filling residue and washing residue; j close the first opening of the pipe; Two openings are filled with capillary material into the pipe to form a capillary structure in the pipe; a working fluid is poured into the pipe through the second opening; a second opening of the pipe is closed to form a heat pipe of a heat pipe radiator, thereby forming the entire heat pipe heat sink. The manufacturing equipment of the heat pipe radiator of the present invention includes a mold and a mold core, and the mold includes a mold base and two forming molds with the same structure. The two forming molds can be freely opened and closed on the mold base. A plurality of parallel-spaced grooves are arranged on the inner side of each forming die and another forming die, and a convex piece is formed between each two-phase f adjacent grooves, and the bottom end of the convex pieces forms a cavity; A core cavity is provided on the inner side through the convex pieces, grooves and cavities to accommodate the mold core therein; the molding mold is further provided with a first-grade channel on the inner side, and one end of the flow channel communicates with the cavity, and the The other end extends to the top surface of the mold and a casting

Page 6 1238751 V. Description of the invention (4) The mouth is communicated; there is also a supplementary riser communicating with the groove in the center of the top surface of each molding die. ^ The heat pipe and heat sink of Ben Sheming's thermal radiator are made of plastic, which has better heat conduction and heat dissipation effect. Because of adopting the manufacturing method of integral casting, the heat pipe radiator of the present invention is a tight combination of the heat official and the radiator, which not only saves the production process #cost ', but also brings the heat conduction effect and heat dissipation effect of the heat pipe radiator. Because the present invention only uses a set of fittings whose inner cavity is compatible with the entire heat pipe radiator, that is, the heat pipe radiator of the present invention is integrated, which not only saves costs, but also can produce a heat pipe with better heat conduction effect and heat dissipation effect. heat sink. "Embodiment" " Refer to the first figure for the first month, 'The heat pipe radiator 10 of the present invention is integrally cast, and includes a base U, a plurality of heat sinks 12 and a single-shaped heat pipe 13. Among these heat sinks 12 The heat pipe] 3 ::: end is formed in the heat sinks 12, and the other end is formed on the top surface of the base 11 and the heat pipe. Wait for the heat sink J 2 to contact. M The second to fourth figures, the manufacture of the heat pipe radiator 10 of the present invention: two-phase P1 puller 20 and a mold core 30 'The mold 20 includes-mold base 21 and!: = Molding Mold 22. One of the two sides of the top surface of the mold base 21 is provided with one: U: Each side of the bottom surface of each molding mold 22 is provided with a -slider 221, each = two people are installed in the slide groove 211 of the mold base 21, The two forming dies 22 are slid on the die base 21 to realize mold opening and closing. The two forming dies 22 have the same original structure, and the structure and the inner structure of each of the forming dies 22 and

1238751 V. Description of the invention (5) The structures set are half of the corresponding structure, and the other half is set on the corresponding molding die 22, so that after the mold is closed (as shown in the fifth figure), it forms a unit with the other half. Integer structure. The second figure only shows the inside and top surface structure of one of the forming dies 22. The inside of the forming die 22 is provided with a plurality of grooves 2 22 arranged in parallel and spaced apart, and a gradually decreasing thickness is formed between every two adjacent grooves 222. (Draft angle) of the convex piece 223; the bottom end of the convex piece 223 forms a cavity 224; the inside of the forming die 22 is provided with a U-shaped core cavity 225, and one side end of the U-shaped core cavity 2 2 5 penetrates Pass the same. The convex piece 223 and the groove 222, and the other end passes through the convex piece 223, the groove 222 and the cavity 224; the forming die 22 is also provided with a fixed cavity 226 and a first-grade channel 227 on the inside, The fixed cavity 226 communicates with both ends of the core cavity 225, the flow channel 227 communicates with the cavity 224 at one end, and the other end extends to the top surface of the molding die 22 and communicates with a pouring port 228; the top surface of each molding die 22 A supplementary riser 229 communicating with the groove 222 is also provided in the center. The core 30 of the present invention may be a water-soluble core (soluble in water, but insoluble in metal liquid), a sand core (which can be broken by heating for a long time), or a metal tube. The core 30 includes a U-shaped core Part 31 and a fixing part 32 connected to the two ends of the core part 31 'wherein the core part 31 is placed in the core cavity 225 of the two forming dies 22' and the fixing part 32 is placed in the two forming parts In the fixed cavity 2 2 6 of the mold 22 (as shown in the fourth figure). In addition, if the mold core 30 is a water-soluble core or a sand core, the gap between the core portion 3 1 and the core cavity 2 2 5 of the molding mold 22 needs to be a gap for the inflow of the metal dazzling fluid f. It is a metal tube. An interference fit is formed between the core portion 31 and the core cavity 2 2 5 of the forming die 2 2. Please refer to the fifth and sixth figures together to manufacture the heat pipe radiator 10 of the present invention through the following steps:

Page 8 1238751

V. Description of the invention (6) Α · 提 f said mold 20, the mold 20 bis forming mold 22 is slidingly installed on the mold base 21 and in a separated state (as shown in the second figure); Make the core 3 (as shown in the third figure); c. Place the core 30 in one of the molds 22, where the U-shaped core portion 31 is located in the u-shaped cavity 22 5 In addition, if the core 30 is a water-soluble core or a sand core, there is a gap between the core 31 and the core cavity 225. If the core 30 is a metal tube, the core 31 and the molding die 2 2 An interference fit is formed between the core cavities 2 2 5, and the fixing portion 32 of the mold core 30 is fixed in the fixing cavity 226 (as shown in the fourth figure); D · Opposite to the slide groove 2 11 of the mold base 21 Move the two forming dies 22 to achieve the mold clamping (as shown in the fifth figure); E. Pouring molten metal melt (copper, aluminum, etc.) into the mold 20 from the pouring port 228; F. Phase cooling after cooling Move the two forming molds in the back direction to realize the mold opening, and take out the blank of the heat pipe radiator 10 (as shown in the sixth figure); G · Remove the mold core 30 to form a first and second openings 332, 3 34 and with The pipes connected to the outside of the heater (as shown in Figure 7) • If the mold core 30 is a water-soluble core, the entire wool can be immersed in water to melt the mold core 30 to obtain the heat pipe 1 3. The mold core 30 series sand core needs to heat the blank for a period of time to break the sand tolerance, then the first and second openings of the pipe forming the heat pipe 3 3 2, 3 3 4 are poured out the broken sand core;

1238751 V. Description of the invention (7) 3. And if the U-shaped core portion 31 of the mold core 30 is a metal tube itself, it is only necessary to remove the fixing portion 32; Η. Remove the filling residue 40 and wash Residue 50; I. Closing the first opening of the pipe 3 3 2; J. Filling the pipe with capillary material from the second opening 3 3 4 of the pipe to form a capillary structure in the pipe; IL toward the Fill the pipe with working liquid (water or alcohol, etc.); L. Close (cold pressing, welding, or a combination of both) the second opening 334 of the pipe to form the heat pipe 13 of the heat pipe radiator 10, thereby casting the whole Invented heat pipe radiator 10. To sum up, the present invention meets the requirements for invention patents, and patent applications are filed in accordance with the law. However, the above is only a preferred embodiment of the present invention. For those skilled in the art, equivalent modifications or changes made in accordance with the spirit of the present invention should be covered by the following patent applications.

Page 101238751 Simple illustration of the drawings [Simplified illustration of the drawings] The first drawing is the present, the second drawing is the third drawing, the fourth drawing is the third drawing, the fifth drawing is the third drawing, and the sixth drawing is the making. Illustration. A perspective view of a heat pipe radiator. A perspective view of a mold of a heat pipe radiator of the present invention. A perspective view of a mold core of a heat pipe radiator of the present invention. The core of the heat pipe radiator of the present invention is placed in the mold. The mold of the heat pipe radiator of the present invention is to be washed after the mold is closed. The schematic diagram of the mold of the heat pipe radiator of the present invention after the mold is opened. The seventh figure is a perspective view of a semi-finished product of the heat pipe radiator of the present invention.

Heat pipe radiator 10 Base 11 Heat sink 12 Stern tube 13 Mould 20 Mould base 21 Slot 211 Mould 22 Slider 221 Groove 222 Tab 223 Cavity 224 Core cavity 225 Fixed cavity 226 Flow channel 227 Filling port 228 Filling Riser 229 Core 30 Core 31 Fixing P 32 First opening 332 Second opening 334 Shrinkage residue 40 Pouring residue 50 Page 11

Claims (1)

1238751 VI_Please patent scope 1 · A heat pipe radiator including: a heat sink including a base and a plurality of heat sinks integrally formed with the base; and at least one heat pipe; one side end of the at least one heat pipe is integrated Molded on the base of the radiator, and the other side end is integrally formed in the plurality of heat sinks; 2. The heat pipe radiator according to item 1 of the scope of patent application, the heat sink of which is integrally extended from the top surface of the base Out. ~ Zhongyousan3 · The heat pipe radiator as described in item 1 of the scope of patent application, the other end of which is located on the top surface of the base and the heat sink ", medium sigma heat pipe 4 · a heat pipe The manufacturing method of the heat sink mainly includes sheet contact. : In several steps, a mold for manufacturing the heat pipe radiator is provided, including a mold base and two molding molds placed on the mold base. The shape of the inner side of the mold package is adapted to the heat pipe radiator; The split mold provides a mold core, which has a shape of a heat pipe; a y-shaped core portion fixes the mold core in a molding mold; closes the two molding molds, and casts a molten metal liquid into the mold; After cooling, open the mold, remove the blank of the heat pipe radiator, and remove the mold core to form a pipe with the first and 篦 — = 'external communication; the sweat mouth and the radiator remove the filling residue and pouring residue; Page 121238751 6. The scope of patent application, closing the first opening of the pipeline; filling capillary material into the pipeline from the second opening of the pipeline to form a capillary structure in the pipeline; from the second opening into the pipeline Fill the working fluid; close the second opening of the pipe to form the heat pipe of the heat pipe radiator, and form the entire heat pipe radiator. 5. The method for manufacturing a heat pipe radiator as described in item 4 of the scope of patent application, wherein a core cavity adapted to the shape of the heat pipe is provided on the inner side of the forming die. 6. The method for manufacturing a heat pipe radiator as described in item 5 of the scope of the patent application, wherein the core of the mold core may be a water-soluble core with a gap fitted in the cavity of the molding core. 7. The method of manufacturing a heat pipe radiator as described in item 5 of the scope of the patent application, wherein the core of the mold core is a sand core that is fitted into the cavity of the mold core with a gap. 8. The method for manufacturing a heat pipe radiator as described in item 5 of the scope of the patent application, wherein the core of the mold core is a metal tube that fits into the cavity of the mold core in an interference fit. 9. The method for manufacturing a heat pipe radiator as described in item 4 of the scope of patent application, wherein the pouring metal melt is a copper melt. 10 · The method for manufacturing a heat pipe radiator as described in item 4 of the scope of the patent application, wherein the molten metal melt is soluble in liquid. 11. The method for manufacturing a heat pipe radiator as described in item 6 of the scope of the patent application, wherein the entire blank is immersed in water to dissolve the water-soluble core to obtain a pipe forming a heat pipe. Page 131238751 6. Application for patent scope 1 2 · The manufacturing method of the heat pipe radiator as described in item 7 of the scope of patent application, wherein after heating the mattan for a period of time to break the sand core, the pipe forming the heat pipe Open the core of the sand that changed into noon. 1 3 · — A manufacturing equipment for a heat pipe radiator, including: a mold, including a mold base and two forming molds with the same structure, which can be freely opened and closed on the mold base. The molding die is provided with a first-grade channel on the inner side. One end of the flow channel extends to the top surface of the molding die and communicates with a pouring port. The top surface of each molding die is also provided with a supplementary riser, and each molding die is connected to the other. Corresponding to the inner side of the molding die, there are a plurality of grooves arranged in parallel and spaced apart and communicating with the supplementary riser. A convex piece is formed between each two adjacent grooves. The bottom ends of the convex pieces form one with the other end of the flow channel. The interconnected cavity is further provided with a core cavity passing through the convex pieces, grooves and the cavity on the inner side of the forming mold; and a mold core accommodated in the core cavity of the plastic mold. 1 4 · The manufacturing equipment for heat pipe radiators as described in item No. 丨 3 of the scope of patent application, where the structure provided on the inner side of each molding die and the structure provided on the top surface are half of the corresponding structure, and the other half Corresponding to another forming mold, so as to form a complete structure with the first half after clamping. 1 5 · The manufacturing equipment for a heat pipe radiator as described in item 13 of the scope of patent application, wherein the thickness of each tab is gradually reduced to form the draft slope. 16 · The manufacturing equipment for a heat pipe radiator as described in Item 13 of the scope of the patent application, wherein the core of the mold core may be / a water soluble core with a gap between the core cavity of the molding mold. 1 7 · Manufacturing equipment for thermal radiators as described in item 13 of the scope of patent application 1238751 6. The scope of patent application, where the core of the mold core can be a sand core with a gap between the core cavity of the mold and the mold core. 1 8. The manufacturing equipment for a heat pipe radiator as described in item 13 of the scope of the patent application, wherein the core of the mold core may be a metal tube which interference fits in the core cavity of the molding mold. 19. The manufacturing equipment of the heat pipe radiator as described in item 13 of the scope of the patent application, wherein the core of the mold core and the core cavity of the molding mold are U-shaped. Page 15