TWI766321B - Brazing structure of heat sink - Google Patents

Abstract

A brazing structure of a heat sink includes a first brazing body having a first brazing surface, and a second brazing body having a second brazing surface. The first brazing surface and the second brazing surface are bonded together by pressing and brazing so that the first and second brazing bodies enclose a chamber. Pluralities of channels are formed on the first brazing surface, and each channel is formed in a direction which is neither perpendicular nor parallel to the first brazing surface.

Description

Enclosed radiator welding structure

The present invention relates to a closed radiator, in particular to a closed radiator welding structure.

Radiators are widely used in various products. Generally speaking, higher-end products usually use water-cooled radiators, which have the advantages of quietness and stable cooling compared with air-cooled radiators. In addition, the water-cooled radiator forms a closed space by welding the upper and lower workpieces to fill the working fluid.

However, during the soldering process where solder is applied, the melting of the solder often produces residues such as bubbles, slag inclusions, and flux. Moreover, when the welding workpiece is very complicated, a preset welding piece is used to place between the upper and lower workpieces, and pressure is applied to the upper and lower workpieces during the welding process, making it difficult for these impurities to be discharged from the welding plane, and then A large number of voids are formed, resulting in poor soldering, especially for soldered parts with flux applied.

Therefore, the inventor of the present invention feels that the above-mentioned defects can be improved, and has devoted himself to research and application of theories, and finally proposes an invention with reasonable design and effective improvement of the above-mentioned defects.

The technical problem to be solved by the present invention is to provide a closed heat sink welding structure in view of the deficiencies of the prior art.

In order to solve the above technical problems, the present invention provides a closed heat sink welding structure, comprising: a first welding plane is formed on the top surface of a first welding body, and a second welding plane is formed on the bottom surface of a second welding body, And the first welding plane and the second welding plane are press-fitted and welded together, so that the first welding body and the second welding body surround a cavity; wherein, the first welding plane is formed with a cavity. A plurality of channels, and each of the channels is neither perpendicular nor parallel to the first welding plane.

In a preferred embodiment, a plurality of channels are also formed on the second welding plane, and each of the channels on the second welding plane is neither perpendicular nor parallel to the second welding plane.

In a preferred embodiment, a plurality of the channels are wire-drawing structures formed in an oblique wire-drawing manner.

In a preferred embodiment, a plurality of said channels are hand tool, sandpaper, or CNC scribed channels.

In a preferred embodiment, the first welding body is a box body, and the second welding body is a cover body.

In a preferred embodiment, the first welding body is a box-shaped body surrounded by multiple walls, and the first welding plane is jointly formed by the top surfaces of the multiple walls.

In a preferred embodiment, a plurality of the channels are wire-drawing structures formed in an oblique wire-drawing manner, and the wire-drawing angle of the wire-drawing structures is 45 degrees from the long side of each wall.

In a preferred embodiment, the wire drawing structure formed by the plurality of channels makes the surface roughness Ra of the first welding plane be 3.2-6.4 μm.

The beneficial effect of the present invention is at least that, in the enclosed heat sink welding structure provided by the present invention, the welding plane is formed with a plurality of channels to reduce the pressure area structure, and each channel is arranged obliquely, neither vertical nor The structure parallel to the welding plane increases the chance of gas and flux discharge, so as to reduce the voids generated during the welding process, thereby effectively improving the welding quality.

For a further understanding of the features and technical content of the present invention, please refer to the following detailed descriptions and drawings of the present invention. However, the drawings provided are only for reference and description, and are not intended to limit the present invention.

The following are specific specific examples to illustrate the embodiments disclosed in the present invention, and those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present invention in detail, but the disclosed contents are not intended to limit the protection scope of the present invention. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

Please refer to FIG. 1 , FIG. 2 , and FIG. 3 , an embodiment of the present invention provides a closed heat sink welding structure. The enclosed radiator Z is, for example, a water-cooled radiator, which may have a cavity 1000 inside, and the cavity 1000 may be filled with an appropriate amount of working fluid. In addition, the cavity 1000 can also be provided with a plurality of shunt channels, or a fin array, or a column array, which can be appropriately changed according to needs, and is not limited.

The enclosed heat sink welding structure provided according to the embodiment of the present invention basically includes a first welding body 10 and a second welding body 20, and the first welding body 10 and the second welding body 20 are surrounded by The cavity 1000 is described.

On top of that, a first welding plane 101 is formed on the top surface of the first welding body 10 , a second welding plane 201 is formed on the bottom surface of the second welding body 20 , and the first welding plane 101 is formed on the bottom surface of the second welding body 20 . A welding plane 101 and the second welding plane 201 of the second welding body 20 are press-fitted and welded together.

Further, the first soldering plane 101 and the second soldering plane 201 can preferably be welded together by a preset solder, so that the first soldering plane 101 and the second soldering plane 201 can be welded together. Press-fit welded into one. In detail, the solder can be in the form of a welding rod, a solder tab, a solder paste, a composite material, and the like. In addition, the shape and size of the solder can be appropriately adjusted according to the size of the first soldering plane 101 or the second soldering plane 201 . The solder can also be a flux-coated solder preform. In addition, the first welding plane 101 and the second welding plane 201 may also be coated with flux as needed, but this embodiment is not limited thereto.

In this embodiment, the first welding body 10 may be a box-shaped body, and the second welding body 20 may be a cover body. In other embodiments, the first welding body 10 may be a cover body, and the second welding body 20 may be a box-shaped body. Furthermore, the first welding body 10 may be a box-shaped body surrounded by four walls 102 , and the first welding plane 101 may be jointly formed by the top surfaces of the four walls 102 .

In other embodiments, the first welding body 10 may be a box-shaped body surrounded by six walls 102, but may also be a box-shaped body surrounded by eight walls 102, so that the first welding plane 101 may be formed by the top surfaces of the six walls 102 or by the top surfaces of the eight walls 102 .

Furthermore, the first welding body 10 is formed with a plurality of channels T on the first welding plane 101 , and each of the channels T is disposed obliquely, neither perpendicular nor parallel to the first welding plane. 101. Therefore, in the embodiment of the present invention, the welding plane is formed with a plurality of channels to reduce the pressure area structure, and each channel is arranged obliquely, not perpendicular or parallel to the welding plane, to increase the gas and flux discharge. The opportunity to reduce the voids generated during the welding process can effectively improve the welding quality.

In detail, these channels T can be formed by scribing with hand tools, engraving with sandpaper, and scribing with CNC. In order to meet the conditions of rapid production in modern industries, these channels T can be formed by wire drawing with a semi-automatic wire drawing machine, but if the wire drawing direction is perpendicular to a certain wall, it will become parallel to other walls, which will reduce exhaust gas. Therefore, these channels T are wire-drawing structures formed by oblique wire drawing, and are wire-drawing structures formed by diagonal wire drawing in the same direction to increase the effect of exhaust. In addition, these channels T may also be formed on the second welding plane 201 .

In the present embodiment, the wire-drawing structure formed on the first welding plane 101 is an obliquely extending shape with left low and right high (refer to the direction shown in FIG. 2 ), but it may also be oblique with left high and right low The extension form is not limited.

In addition, the first welding plane 101 is formed by the top surfaces of the four walls 102 , and the drawing angle θ of the wire drawing structure formed on the first welding plane 101 is preferably 45° from the long side of each wall 102 . degree (as shown in Figure 2), thereby increasing the effect of exhaust.

In addition, the spacing density of the wire drawing structures formed on the first welding plane 101 may vary irregularly, but may also vary regularly.

Furthermore, as shown in FIG. 3 , in order to achieve a better exhaust effect, the wire drawing structure formed by these channels T on the first welding plane 101 makes the surface roughness Ra of the first welding plane 101 preferably 3.2～ 6.4μm to achieve better exhaust effect.

Based on the above, the closed heat sink welding structure provided by the embodiment of the present invention is a structure in which the welding plane is formed with a plurality of channels to reduce the pressure area, and each channel is arranged obliquely, neither perpendicular nor parallel to the The structure of the welding plane increases the chance of gas and flux discharge, so as to reduce the voids generated during the welding process, thereby effectively improving the welding quality.

The content disclosed above is only a preferred feasible embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

Z: Enclosed Radiator 1000: cavity 10: The first welded body 101: The first welding plane 102: Walls 20: Second welded body 201: Second welding plane T: channel

FIG. 1 is a schematic diagram of the welding structure of the enclosed heat sink of the present invention.

2 is a schematic top view of the first welding body of the enclosed heat sink welding structure of the present invention.

FIG. 3 is a schematic front view along the line III-III shown in FIG. 2 .

Z: Enclosed Radiator

1000: cavity

10: The first welded body

101: The first welding plane

102: Walls

20: Second welded body

201: Second welding plane

T: channel

Claims (4)

A closed radiator welding structure, comprising: a first welding plane is formed on the top surface of a first welding body, and a second welding plane is formed on the bottom surface of a second welding body, and the first welding plane and the first welding plane are formed. There is flux between the two welding planes, and the first welding plane and the second welding plane are press-fitted and welded together, so that the first welding body and the second welding body surround a cavity; wherein, A plurality of channels are formed on the first welding plane, and each of the channels is neither perpendicular nor parallel to the first welding plane; wherein, the first welding body is a box-shaped body surrounded by multiple walls, The first welding plane is formed by the top surface of the multi-sided wall, the plurality of channels are formed on the top surface of the multi-sided wall, and the plurality of channels are formed on the top surface of the multi-sided wall The filament-shaped channel structures are formed in the same direction, and the formation angle of the filament-shaped channel structures is an acute angle with the long side of each wall. The enclosed heat sink welding structure of claim 1, wherein a plurality of channels are formed on the second welding plane, and each of the channels on the second welding plane is neither perpendicular nor parallel to the second welding plane. the second welding plane. The enclosed radiator welding structure according to claim 1, wherein a plurality of the channels are formed on the top of the multi-sided wall by one of the methods of oblique wire drawing, hand tool scribing, sandpaper scribing, and CNC scribing. The filament-shaped channel structures formed facing the same direction. The enclosed heat sink welding structure according to claim 1, wherein the filament-shaped channel structure formed by the plurality of channels enables the surface roughness Ra of the first welding plane to be 3.2-6.4 μm.

Images