Vapor chamber
A vapor chamber excellent in productivity, reduction of a number of components, and capable of preventing reduction in area of a cavity section while reducing a space of an outer periphery of the cavity section in which a working fluid is sealed is provided. An example vapor chamber has a container in which a cavity section is formed by stacked plate-shaped members, a working fluid that is sealed in the cavity section, and a wick structure accommodated in the cavity section.
1. A vapor chamber comprising:
a container in which a cavity section is formed by stacked plate-shaped members;
a working fluid that is sealed in the cavity section; and
a wick structure accommodated in the cavity section,
wherein a first plate-shaped member on a first side of the container, forming a first outermost layer of the container, has at least one projecting portion having a first hole portion,
wherein a second plate-shaped member on a second side of the container, forming a second outermost layer of the container opposite of the first outermost layer, has at least one projecting portion that is stacked on the projecting portion of the first plate-shaped member, and includes a flow path that allows the first hole portion and the cavity section to communicate with each other,
wherein an outer periphery of the cavity section is sealed, and
wherein a third plate-shaped member forming a middle layer is stacked between the first plate-shaped member on the first side forming the first outermost layer and the second plate-shaped member on the second side forming the second outermost layer, wherein the third plate-shaped member has at least one projecting portion that overlaps with the projecting portion of the first plate-shaped member and the projecting portion of the second plate-shaped member, wherein the third plate-shaped member includes a second hole portion communicating with the first hole portion and the flow path, and the third plate-shaped member further includes a frame portion forming an inner side surface of the cavity section.
2. The vapor chamber according to claim 1 , wherein
a number of the stacked plate-shaped members is at least three.
3. The vapor chamber according to claim 1 , wherein
the flow path is formed by sheet metal processing.
4. The vapor chamber according to claim 1 , wherein
the first hole portion and the second hole portion are circular in plan view, and have diameters of 0.1 mm to 5 mm.
5. The vapor chamber according to claim 1 , wherein
the flow path has a width of 0.1 mm to 5 mm, a height of 0.1 mm to 5 mm, and a length of 5 mm to 150 mm.
6. The vapor chamber according to claim 1 , wherein
a material of the container is at least one kind of metal selected from a group comprising a stainless steel, a copper, a copper alloy, an aluminum, an aluminum alloy, a tin, a tin alloy, a titanium, a titanium alloy, a nickel and a nickel alloy.
7. A vapor chamber comprising:
a container in which a cavity section is formed by stacked plate-shaped members;
a working fluid that is sealed in the cavity section;
a wick structure accommodated in the cavity section,
wherein a first plate-shaped member on a first side of the container, forming a first outermost layer of the container, has at least one projecting portion having a hole portion, and a second plate-shaped member on a second side of the container, forming a second outermost layer of the container, has at least one projecting portion on the second side that is stacked on the projecting portion of the first plate-shaped member, and the second plate shaped member includes a flow path that allows the hole portion and the cavity section to communicate with each other,
wherein an outer periphery of the cavity section is sealed; and
a sealed portion of the flow path overlaps the cavity section from a position overlapping the hole portion.
8. The vapor chamber according to claim 7 , wherein
the projecting portion of the first plate-shaped member and the projecting portion on the second plate-shaped member which are stacked are cut to form a cut portion outside of the sealed portion.
9. The vapor chamber according to claim 8 , wherein
the cut portion does not project from the outer periphery of the container.
10. A vapor chamber, comprising:
a container in which a cavity section is formed by a first plate-shaped member on a first side of the container and a second plate-shaped member on a second side of the container that is stacked on the first plate-shaped member on the first side of the container;
a working fluid that is sealed in the cavity section;
a wick structure accommodated in the cavity section, wherein
the first plate-shaped member has at least a first projecting portion having a hole portion, wherein
the second plate-shaped member has at least a second projecting portion that is stacked on the projecting portion of the first plate-shaped member, and includes a flow path that allows the hole portion and the cavity section to communicate with each other, wherein
a recessed part is formed on a first surface of the second plate-shaped member, the surface facing the first plate-shaped member, wherein the recessed part of the second plate-shaped member forms at least a part of the cavity section, wherein
the flow path is a recessed groove that is formed on the first surface in the projecting portion of the second plate-shaped member, the flow path facing the projecting portion of the first plate-shaped member,
a step portion that is a step in a direction of the projecting portion of the second plate-shaped member is formed along the flow path, on a second surface of the second plate-shaped member opposite the first surface, and wherein
an outer periphery of the cavity section is sealed, and
a sealed portion of the flow path, at a cavity section side from the hole portion.
11. The vapor chamber according to claim 10 , wherein
the step portion is formed on each of both edge portions of the projecting portion of the second plate-shaped member on opposite sides of the flow path.
12. The vapor chamber according to claim 10 , wherein
the projecting portion of the first plate-shaped member and the projecting portion of the second plate-shaped portion are stacked and cut to form a cut portion outside of the sealed portion.
13. The vapor chamber according to claim 12 , wherein
the cut portion does not project from the outer periphery of the container.
14. The vapor chamber according to claim 10 , wherein
the flow path is formed by etching or cutting.
15. The vapor chamber according to claim 10 , wherein
the step portion is formed by etching or cutting.
16. The vapor chamber according to claim 10 , wherein
the hole portion is circular in plan view, and has a diameter of 0.1 mm to 5 mm.
17. The vapor chamber according to claim 10 , wherein
the flow path has a width of 0.1 mm to 5 mm, a depth of 0.1 mm to 5 mm, and a length of 5 mm to 150 mm.
18. The vapor chamber according to claim 10 , wherein
a material of the container is at least one kind of metal selected from a group comprising a stainless steel, a copper, a copper alloy, an aluminum, an aluminum alloy, a tin, a tin alloy, a titanium, a titanium alloy, a nickel and a nickel alloy.