# US 12,016,106 B2 · Cooking appliance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,016,106 B2 - Document ID: US12016106B2 - Status: Granted - Kind: B2 - Application number: 17/141,816 - Filed: 2021-01-05 - Published: 2022-03-24 - Granted: 2024-06-18 - Earliest claimed: 2020-09-22 - Assignees: LG Electronics Inc.; Mokpo National University Industry-Academic Cooperation Foundation - Applicants: LG Electronics Inc.; Mokpo National University Industry—Academic Cooperation Foundation - Inventors: Jaeyoung Shin; Sunghun Sim; Junghyeong Ha; Yongsoo Lee; Taeho Kim; Taehee Kim; Seokkyun Son; Dohun Kim - Web page: https://patentgrep.com/patent/US12016106B2 ## CPC - H05B 6/6426: {Aspects relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord} - H05B 6/76: Prevention of microwave leakage, e.g. door sealings - H05B 6/6488: {combined with induction heating} - H05B 6/80: Apparatus for specific applications (stoves or ranges F24C7/02) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract The present disclosure comprises a housing that defines a cavity therein, a door connected to the housing and configured to open and close the cavity, a microwave (MW) heating module configured to emit microwaves into the cavity, and an induction heating (IH) module configured to emit a magnetic field toward the cavity, the IH module comprises a shielding member through which the magnetic field generated by a working coil of the IH module passes and which blocks microwaves emitted from the MW heating module, and the shielding member comprises any one of carbon paper or carbon fabric woven with carbon fiber. ## Claims ### Claim 1 A cooking appliance comprising: a housing that defines a cavity therein; a door connected to the housing and configured to open and close the cavity; a microwave (MW) heating module configured to emit microwaves into the cavity; and an induction heating (IH) module configured to emit a magnetic field toward the cavity, wherein the IH module comprises a shielding member through which the magnetic field generated by a working coil of the IH module passes, the shielding member being configured to block the microwaves emitted from the MW heating module, wherein the shielding member comprises any one of carbon paper or carbon fabric woven with carbon fiber, wherein the IH module further comprises a plate and a plurality of connection members, the plurality of connection members being positioned on vertically opposite sides of both the plate and the shielding member, and wherein the plurality of connection members comprise: a first connection member that passes through the plate and that protrudes into the cavity, the first connection member partitioning the plate into a heating region and a non-heating region, and a second connection member that is positioned between the shielding member and the working coil and that fixes the shielding member to the plate together with the first connection member. ### Claim 2 (depends on 1) The cooking appliance of claim 1, wherein the carbon fabric woven with the carbon fiber is a fabric woven by crossing carbon fibers in a vertical direction and a horizontal direction. ### Claim 3 (depends on 1) The cooking appliance of claim 1, wherein a thickness of the carbon paper is 1 mm or less. ### Claim 4 (depends on 1) The cooking appliance of claim 1, wherein a thickness of the shielding member is greater than a skin depth caused by electromagnetic waves emitted from the MW heating module, and less than a skin depth caused by electromagnetic waves emitted from the working coil of the IH module. ### Claim 5 (depends on 1) The cooking appliance of claim 1, wherein a thickness of the shielding member is greater than a value obtained by multiplying a predetermined constant by a skin depth caused by electromagnetic waves emitted from the MW heating module and less than a skin depth caused by electromagnetic waves emitted from the IH module. ### Claim 6 (depends on 1) The cooking appliance of claim 1, wherein the IH module comprises: the plate forming a first surface of the cavity, a heat insulating material disposed under the plate, and the working coil configured to generate the magnetic field, and wherein the shielding member is disposed between the heat insulating material and the working coil. ### Claim 7 (depends on 6) The cooking appliance of claim 6, wherein a size of a cross-sectional area of the shielding member in a horizontal direction is greater than or equal to a size of a cross-sectional area of the working coil in the horizontal direction. ### Claim 8 (depends on 6) The cooking appliance of claim 6, wherein the shielding member overlaps at least a portion of the working coil in a vertical direction. ### Claim 9 (depends on 6) The cooking appliance of claim 6, wherein the housing is provided with the plate that forms the first surface of the cavity and overlaps at least a portion of the working coil in a vertical direction. ### Claim 10 (depends on 9) The cooking appliance of claim 9, wherein the plate is formed of a first plate made of glass and a second plate made of iron. ### Claim 11 (depends on 10) The cooking appliance of claim 10, wherein the first plate is disposed inside the second plate. ### Claim 12 (depends on 11) The cooking appliance of claim 11, wherein the working coil overlaps at least a portion of the first plate in the vertical direction. ### Claim 13 (depends on 1) The cooking appliance of claim 1, wherein the IH module is configured to emit the magnetic field toward a first surface of the cavity, and wherein the MW heating module is configured to supply the microwaves to the cavity through a second surface of the cavity. ### Claim 14 (depends on 13) The cooking appliance of claim 13, wherein the first surface of the cavity is a bottom surface of the cavity, and wherein the second surface of the cavity is at least one of other surfaces other than the bottom surface of the cavity. ### Claim 15 (depends on 1) The cooking appliance of claim 1, wherein the second connection member is in contact with the shielding member. ### Claim 16 (depends on 1) The cooking appliance of claim 1, wherein the second connection member is in contact with a lateral side of the shielding member. ### Claim 17 (depends on 1) The cooking appliance of claim 1, wherein the second connection member is in contact with a lower side of the shielding member.