Enclosed heat sink with side wall structure

An enclosed heat sink with a side wall structure is provided. The side wall structure includes a welding body having a first welding plane and a side wall structure having a second welding plane. The first welding plane and the second welding plane are pressured and welded to each other, such that the welding body and the side wall structure encapsulate a cavity. A width of the second welding plane is smaller than a width between two side surfaces of the side wall structure.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

FIELD OF THE DISCLOSURE

The present disclosure relates to an enclosed heat sink, and more particularly to an enclosed heat sink with a side wall structure.

BACKGROUND OF THE DISCLOSURE

Heat sinks are widely applied to various types of products. Generally speaking, a high-end product is usually equipped with a water cooling heat sink. The water cooling heat sink has advantages of being more quiet and having a stable cooling effect compared to an air cooling heat sink. Moreover, the water cooling heat sink has an upper workpiece and a lower workpiece welded to each other and forms an enclosed space therebetween, so as to have a working fluid filled inside the water cooling heat sink.

However, during the welding process of applying a solder, bubbles and residuals such as slags and soldering flux are likely to form when the solder is melting. Furthermore, when workpieces to be welded are complex, a pre-disposed solder is disposed between the upper workpiece and the lower workpiece, and pressure is applied to the upper workpiece and the lower workpiece during the welding process, which makes it difficult for impurities to be discharged from the welding plane. A large number of voids are formed, resulting in poor soldering, especially in cases of workpieces with soldering flux applied.

Therefore, it has become an important issue for the industry to overcome the abovementioned technical inadequacies.

SUMMARY OF THE DISCLOSURE

In response to the above-referenced technical inadequacies, the present disclosure provides an enclosed heat sink with a side wall structure.

In one aspect, the present disclosure provides an enclosed heat sink with a side wall structure including a welding body having a first welding plane and a side wall structure having a second welding plane. The first welding plane and the second welding plane are pressured and welded to each other, such that a cavity is formed between the welding body and the side wall structure. A width of the second welding plane is less than a width between two side surfaces of the side wall structure.

In a preferable embodiment, the first welding plane and the second welding plane are pressured and welded to each other through a pre-disposed solder.

In a preferable embodiment, the solder is one of a welding rod, a solder lug, a solder paste, or a composite material.

In a preferable embodiment, the solder is a solder preform coated with soldering flux.

In a preferable embodiment, the two side surfaces of the side wall structure converge toward the second welding plane to form two inclined wall surfaces.

In a preferable embodiment, a ratio of a width of the inclined wall surfaces to a height between the inclined wall surfaces and the first welding plane is 3:1.

In a preferable embodiment, a vertical plane is formed between the second welding plane and each of the two side surfaces of the side wall structure.

In a preferable embodiment, a curved plane is formed between the second welding plane and each of the two side surfaces of the side wall structure.

In a preferable embodiment, a stepped plane is formed between the second welding plane and each of the two side surfaces of the side wall structure.

In a preferable embodiment, an irregular plane is formed between the second welding plane and each of the two side surfaces of the side wall structure.

One of the advantages of the present disclosure is that the side wall structure of the enclosed heat sink provided is able to increase a discharge of gas and soldering flux through reducing the width of a welding plane, so as to reduce an area under pressure, and is able to reduce voids produced during a welding process through structures of the two inclined wall surfaces and the curved planes on two edges of the welding plane, which thereby effectively improves the welding quality.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

Referring toFIG. 1andFIG. 2, a side wall structure of an enclosed heat sink of one embodiment of the present disclosure is provided. The enclosed heat sink Z, such as a water cooling heat sink, includes a cavity1000on the inside, and the cavity1000can be filled with an adequate amount of working fluid. Moreover, a plurality of diverting channels, a fin array, or a column array can be disposed inside the cavity1000, which can be varied according to requirements, and the present disclosure is not limited thereto.

Referring toFIG. 2, the side wall structure of the enclosed heat sink provided by the present disclosure substantially includes a welding body10and a side wall structure20, and the welding body10and the side wall structure20encapsulate the cavity1000. The welding body10can be a side wall or a flat cover. The present disclosure describes the welding body10as a side wall, but the present disclosure is not limited thereto.

As mentioned above, the welding body10has a first welding plane101, the side wall structure20has a second welding plane201, and the first welding plane101of the welding body10and the second welding plane201of the side wall structure20are pressured and welded to each other.

Moreover, the first welding plane101of the welding body10and the second welding plane201of the side wall structure20are preferably pressured and welded to each other through a pre-disposed solder2000, such that the first welding plane101and the second welding plane201are pressured and welded to each other to become one. More specifically, the solder2000can be in a form of a welding rod, a solder lug, a solder paste, or a composite material. In addition, a shape and size of the solder2000can be adjusted according to a shape and size of the first welding plane101and the second welding plane201. In addition, the solder2000can be a solder preform coated with soldering flux. In addition, the first welding plane101and the second welding plane201can also be coated with soldering flux according to actual requirements, and the present disclosure is not limited thereto.

Furthermore, two side surfaces of the side wall structure20converge toward the second welding plane201to further form two inclined wall surfaces202. A width T1of the second welding plane201is smaller than a width T2between two side surfaces of the side wall structure20. Therefore, the present disclosure is able to increase a discharge of gas and soldering flux through reducing a width of a welding plane, so as to reduce an area under pressure, and is able to reduce voids produced during a welding process through structures of the two inclined wall surfaces on two edges of the welding plane, which thereby effectively improves the welding quality.

Referring toFIG. 3, in one embodiment, a width T3of the first welding plane101is greater than the width T2between the two side surfaces of the side wall structure20, and the width T3of the first welding plane101is also greater than the width T1of the second welding plane201.

Referring toFIG. 4, in one embodiment, a ratio of a width T4of the inclined wall surfaces202and a height H to the inclined wall surfaces202and the first welding plane101is preferably 3:1.

Referring toFIG. 5, in one embodiment, the width T1of the second welding plane201is smaller than the width T2between the two side surfaces of the side wall structure20, and a vertical plane203is formed between the second welding plane201and each of the two side surfaces of the side wall structure20.

Referring toFIG. 6, in one embodiment, the width T1of the second welding plane201is smaller than the width T2between the two side surfaces of the side wall structure20, and a curved plane204is formed between the second welding plane201and each of the two side surfaces of the side wall structure20.

Referring toFIG. 7, in one embodiment, the width T1of the second welding plane201is smaller than the width T2between the two side surfaces of the side wall structure20, and a stepped plane205is formed between the second welding plane201and each of the two side surfaces of the side wall structure20.

Referring toFIG. 8, in one embodiment, the width T1of the second welding plane201is smaller than the width T2between the two side surfaces of the side wall structure20, and an irregular plane206is formed between the second welding plane201and each of the two side surfaces of the side wall structure20.

Furthermore, the side wall structure of the enclosed heat sink of the present disclosure can be obtained through a welding method, including the following steps:

pre-disposing the solder2000coated with soldering flux between the first welding plane101of the welding body10and the second welding plane201of the side wall structure20; and

pressuring and welding the first welding plane101of the welding body10and the second welding plane201of the side wall structure20to become one through the solder2000. Moreover, during the process of pressuring and welding, since bubbles that are formed by the solder2000after a soldering flux reaction are guided in an oblique angle by the two inclined wall surfaces202, the bubbles can be easily discharged outward, thus reducing the voids produced during the welding process and thereby effectively enhancing the welding quality.

In conclusion, the side wall structure of the enclosed heat sink provided by the present disclosure is able to increase the discharge of gas and soldering flux through reducing the width of the welding plane, so as to reduce the area under pressure, and is able to reduce the voids produced during the welding process through having structures such as the two inclined wall surfaces and the curved planes on the two edges of the welding plane, which thereby effectively improves the welding quality.