INTERNAL STRUCTURE OF VAPOR CHAMBER
An internal structure of vapor chamber is provided. A first plate has an inner surface. A periphery of the first plate has a sealing edge extending outwardly; a level difference exists between the first plate and the sealing edge. Multiple supporting protrusions are formed on the inner surface of the first plate. A second plate has an inner surface spaced apart from the inner surface of the first plate. The brazing structure has a sealing portion and connecting portions, the sealing portion is fixed between the second plate and the sealing edges of the first plate, and the connecting portions are respectively disposed between the corresponding supporting portions of the first plate and of the second plate. The sealing portion is disposed around a periphery of the second plate to align and contact with the sealing edge.
This application is a continuing application of U.S. patent application Ser. No. 16/902,075, filed on Jun. 15, 2020, and entitled “VAPOR CHAMBER”, which is a continuing-in-part application of U.S. patent application Ser. No. 16/264,612, filed on Jan. 31, 2019, and entitled “VAPOR CHAMBER WITH SUPPORT STRUCTURE AND MANUFACTURING METHOD THEREFOR”, which claims priority to CN201810146134.2 filed Feb. 12, 2018. The entire disclosures of the above applications are all incorporated herein by reference.
TECHNICAL FIELDThe present invention relates to a vapor chamber.
BACKGROUNDA conventional vapor chamber has an upper cover and a lower copper sealed with each other and a chamber is enclosed therein. The upper cover and the lower copper are sealed by brazing. Brazing is a joining method for joining two pieces by heating and melting a filler having a melting temperature below that of the pieces. Thereby, the filler is flowable and capable of filling gaps between the two pieces via capillarity, and the two pieces can be joined by solidified filler.
After aforementioned brazing, the brazed portion has a certain thickness and a whole thickness of the upper and lower cover is therefore increased at least 0.02 to 0.03 mm at the brazed periphery. Therefore, a supporting structure in the vapor chamber is stretched and even separated, and issues of strength, flatness and high temperature expansion and deformation are resulted. The issues are more obvious and serious in a compact vaper chamber.
In view of this, the inventor studied various technologies and created an effective solution in the present disclosure.
SUMMARYIt is an objective of the present invention to provide a vapor chamber which is prevented from issues of strength, flatness and expansion in high temperature therein caused by enlarging of gaps between the brazed two plates.
Accordingly, the present invention provides a vapor chamber. The vapor chamber has a first plate, a second plate and a brazing structure connected to the first plate and the second plate. The first plate has an outer surface, an inner surface, a sealing edge extending outwardly at a periphery of the first plate, a level difference formed between the first plate and the sealing edge, and a plurality of first supporting protrusions formed on the inner surface of the first plate. The second plate also has an outer surface and an inner surface, the inner surface of the second plate is spaced apart from the inner surface of the first plate, and the second plate covers the first plate to form a chamber. A plurality of second supporting portions is formed on the inner surface of the second plate. The brazing structure has a sealing portion and a plurality of connecting portions, the sealing portion is fixed between the second plate and the sealing edge of the first plate, and the respective connecting portions are disposed between the first supporting protrusions of the first plate and the second supporting portions of the second plate.
The disclosure will become more fully understood from the detailed description and the drawings given herein below for illustration only, and thus does not limit the disclosure, wherein:
Detailed descriptions and technical contents of the present disclosure are illustrated below in conjunction with the accompanying drawings. However, it is to be understood that the descriptions and the accompanying drawings disclosed herein are merely illustrative and exemplary and not intended to limit the scope of the present disclosure.
Please refer to the exploded view of the present disclosure shown in
Specifically, the first and second plates 1, 2 are flat plates which are made of, for example, copper (Cu), titanium (Ti), or stainless steel (SUS). Each of the first and second plates 1, 2 has a thickness ranged from 0.02 to 0.2 mm, and the thickness is preferably 0.05 mm. According to the present embodiment, each of the first plate 1 and the second plate 2 has an outer surface 10, 20 and an inner surface 11, 21. A sealing edge 12 extends from a periphery of the first plate 1, and a sealing edge 22 extends from a periphery of the second plate 2. On at least one of the two plates 1 (or 2) is provided a level difference between the inner surface 11 (or 21) thereof and the sealing edges 12 (or 22) thereof. The level difference makes the first plate 1 and the second plate 2 enclose a sealed empty chamber 4 between the inner surfaces 11, 21 shown in the partial enlarged view of the portion A in
Please further refer to
According to the present disclosure shown in
The aforementioned content describes the vapor chamber with the improved inner structure.
Furthermore, the second and the third embodiments respectively shown in
Further according to the fourth and fifth embodiments of the present disclosure shown in
Each spilling groove 130, 230 could have a cross section of a rectangular shape or a square shape shown in
Further refer to
In summary, the present invention can certainly achieve the anticipated objects and solve the problems of conventional techniques, and has novelty and non-obviousness, so the present invention completely meets the requirements of patentability. Therefore, a request to patent the present invention is filed according to patent laws. Examination is kindly requested, and allowance of the present invention is solicited to protect the rights of the inventor.
It is to be understood that the above descriptions are merely the preferable embodiments of the present invention and are not intended to limit the scope of the present invention. Equivalent changes and modifications made in the spirit of the present invention are regarded as falling within the scope of the present invention.
Claims
1. An internal structure of vapor chamber, comprising:
- a first plate having an outer surface, an inner surface, a sealing edge extending outwardly at a periphery of the first plate, a level difference being formed between the first plate and the sealing edge, and a plurality of first supporting protrusions being formed on the inner surface of the first plate;
- a capillary layer disposed on the inner surface of the first plate;
- a second plate having an outer surface and an inner surface, the inner surface of the second plate being spaced apart from the inner surface of the first plate, and the second plate covering the first plate to define a chamber, and a plurality of second supporting protrusions being formed on the inner surface of the second plate, and a plurality of reliefs formed on the inner surface of the second plate and a steam channel being enclosed between two reliefs; and
- a brazing structure having a sealing portion and a plurality of connecting portions, formed by a filler via a brazing process, the sealing portion being fixed between the second plate and the sealing edge of the first plate, and the connecting portions being respectively disposed between the first supporting protrusions of the first plate and the second supporting protrusions of the second plate;
- wherein the sealing portion is disposed around a periphery of the second plate to align and contact with the sealing edge of the first plate;
- wherein at least one spilling groove is recessed into the first supporting protrusions of the first plate or at least one spilling groove is recessed into the second supporting protrusions of the second plate so that the filler is allowed to flow into the recessed spilling groove to prevent from spillover onto the capillary layer or into the vapor flow channel during the brazing process.
2. The internal structure of the vapor chamber according to claim 1, wherein the vapor chamber has a thickness ranged from 0.1 to 0.8 mm.
3. The internal structure of the vapor chamber according to claim 1, wherein the first plate and second plate are respectively made of copper, titanium, or stainless steel.
4. The internal structure of the vapor chamber according to claim 1, wherein the first plate and the second plate have a thickness ranged from 0.02 to 0.2 mm.
5. The internal structure of the vapor chamber according to claim 1, wherein a plurality of through holes are defined on the capillary layer corresponding to the first supporting protrusions of the first plate, the first supporting protrusions are inserted though the respective through holes, and the capillary layer is thereby attached on the inner surface of the first plate.
6. The internal structure of the vapor chamber according to claim 1, wherein the first supporting protrusions of the first plate and the second supporting protrusions of the second plate are cylindrical, square or rectangular columns.
7. The internal structure of the vapor chamber according to claim 1, wherein the at least one spilling groove has a cross section of a curve shape, a V shape or an inverted V shape.
8. The internal structure of the vapor chamber according to claim 1, wherein a plurality of spilling grooves is recessed into the first supporting protrusions of the first plate and the second supporting protrusions of the second plate.
9. The internal structure of the vapor chamber according to claim 8, wherein each spilling groove has a cross section of a curve shape, a V shape or an inverted V shape.
10. The internal structure of the vapor chamber according to claim 1, wherein the sealing portion and the connecting portions are identical in thickness.
11. An internal structure of vapor chamber, comprising:
- a first plate having an outer surface, an inner surface, a sealing edge extending outwardly at a periphery of the first plate, a level difference being formed between the first plate and the sealing edge, and a plurality of first supporting protrusions being formed on the inner surface of the first plate;
- a capillary layer disposed on the inner surface of the first plate;
- a second plate having an outer surface and an inner surface, the inner surface of the second plate being spaced apart from the inner surface of the first plate, and the second plate covering the first plate to define a chamber, and a plurality of second supporting protrusions being formed on the inner surface of the second plate; and
- a brazing structure, which has a sealing portion and a plurality of connecting portions identical in thickness, formed by a filler via a brazing process, the sealing portion being fixed between the second plate and the sealing edge of the first plate, and the connecting portions being respectively disposed between the first supporting protrusions of the first plate and the second supporting protrusions of the second plate;
- wherein the first supporting protrusions of the first plate have a contour larger than the second supporting portions of the second plate, and the connecting portions are not entirely formed on the first supporting protrusions, or
- the first supporting protrusions of the first plate has a contour smaller than the second supporting portions of the second plate, and the connecting portions are not entirely formed on the second supporting portions,
- wherein the sealing portion is disposed around a periphery of the second plate to align and contact with the sealing edge of the first plate;
- thereby, an acceptable range of tolerance of aligning is increased, and the filler of the connecting portions is thereby prevented from spillover onto the capillary layer or into the vapor flow channel during the brazing process.
Type: Application
Filed: Oct 4, 2022
Publication Date: Jan 26, 2023
Inventors: Shih-Lin HUANG (Taoyuan City), Wen-Shiang CHEN (Taoyuan City), Shu-Cheng YANG (Taoyuan City)
Application Number: 17/959,971