# US 11,079,183 B2 · Vapor chamber > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,183 B2 - Document ID: US11079183B2 - Status: Granted - Kind: B2 - Application number: 16/521,487 - Filed: 2019-07-24 - Published: 2019-11-28 - Granted: 2021-08-03 - Earliest claimed: 2017-01-27 - Assignees: Furukawa Electric Co., Ltd. - Applicants: Furukawa Electric Co., Ltd. - Inventors: Hirofumi Aoki; Yoshikatsu Inagaki; Hiroshi Sakai - Web page: https://patentgrep.com/patent/US11079183B2 ## CPC - F28D 15/0283: {Means for filling or sealing heat pipes} - F28D 15/04: with tubes having a capillary structure - F28D 15/0233: {the conduits having a particular shape, e.g. non-circular cross-section, annular (F28D15/0241, F28D15/0266 take precedence)} - F28F 3/08: Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning - F28F 21/08: of metal - H05K 7/20336: {Heat pipes, e.g. wicks or capillary pumps} - H10W 40/73: for cooling by change of state - F28F 2275/06: by welding - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) The vapor chamber according to claim 1, wherein a number of the stacked plate-shaped members is at least three. ### Claim 3 (depends on 1) The vapor chamber according to claim 1, wherein the flow path is formed by sheet metal processing. ### Claim 4 (depends on 1) 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. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 1) 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. ### Claim 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. ### Claim 8 (depends on 7) 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. ### Claim 9 (depends on 8) The vapor chamber according to claim 8, wherein the cut portion does not project from the outer periphery of the container. ### Claim 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. ### Claim 11 (depends on 10) 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. ### Claim 12 (depends on 10) 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. ### Claim 13 (depends on 12) The vapor chamber according to claim 12, wherein the cut portion does not project from the outer periphery of the container. ### Claim 14 (depends on 10) The vapor chamber according to claim 10, wherein the flow path is formed by etching or cutting. ### Claim 15 (depends on 10) The vapor chamber according to claim 10, wherein the step portion is formed by etching or cutting. ### Claim 16 (depends on 10) 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. ### Claim 17 (depends on 10) 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. ### Claim 18 (depends on 10) 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.