# US 12,111,088 B2 · Ice maker and refrigerator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,111,088 B2 - Document ID: US12111088B2 - Status: Granted - Kind: B2 - Application number: 18/095,826 - Filed: 2023-01-11 - Published: 2023-06-01 - Granted: 2024-10-08 - Earliest claimed: 2018-11-16 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jinil Hong; Yonghyun Kim - Web page: https://patentgrep.com/patent/US12111088B2 ## CPC - F25C 1/10: by using rotating or otherwise moving moulds (F25C1/08 takes precedence) - F25C 5/22: {particularly adapted for household refrigerators} - F25C 1/04: by using stationary moulds - F25C 1/18: of a particular transparency or translucency, e.g. by injecting air - F25C 1/243: Moulds made of plastics e.g. silicone - F25C 1/25: Filling devices for moulds - F25C 5/08: by heating bodies in contact with the ice - F25C 2305/0221: rotating ice mould - F25C 2400/06: Multiple ice moulds or trays therefor - F25C 2400/14: Water supply - F25C 2500/02: Geometry problems - F25C 2600/04: Control means - F25C: PRODUCING, WORKING OR HANDLING ICE ## Abstract An ice maker of a refrigerator includes a tray assembly having an upper tray that defines upper portions of a plurality of ice making chambers. Each of the plurality of ice making chambers is configured to receive water and generate an ice piece. The tray assembly also includes a lower tray that is located vertically below the upper tray, that is configured to rotate relative to the upper tray, and that defines lower portions of the plurality of ice making chambers, wherein at least one of the upper tray or the lower tray comprises a flexible tray made of a flexible material. Additionally, a case is configured to accommodate the flexible tray to restrict a deformation of the flexible tray. A heater that is located between the case and the flexible tray is configured to supply heat to the plurality of ice making chambers through the flexible tray. ## Claims ### Claim 1 An ice maker comprising: a first tray made of a flexible material, the first tray comprising (i) a first chamber wall that defines a first chamber and (ii) a first extension portion that extends outward from the first chamber wall; a second tray made of a flexible material, the second tray comprising (i) a second chamber wall that defines a second chamber and (ii) a second extension portion that extends outward form the second chamber wall, wherein the first chamber and the second chamber are configured to define an ice chamber based on the first tray and the second tray being joined; a first cover configured to support the first extension portion at a first side of the first tray, the first cover defining a first through hole; a second cover configured to support the first extension portion at a second side of the first tray opposite to the first side of the first tray, wherein the first cover, the first tray, and the second cover are configured to be coupled to one another; a third cover configured to support the second extension portion at a first side of the second tray; and a fourth cover configured to support the second extension portion at a second side of the second tray opposite to the first side of the second tray, the fourth cover defining a second through hole, wherein the third cover, the second tray, and the fourth cover are configured to be coupled to one another, wherein the first chamber wall comprises: a first contact surface that is provided circumferentially around at an edge portion of the first chamber and defines a first chamber opening, and a first exposure portion that is provided at an end of the first chamber wall opposite to the first chamber opening and that is exposed through the first through opening of the first cover, wherein the second chamber wall comprises: a second contact surface that is provided circumferentially around at an edge portion of the second chamber and defines a second chamber opening, and a second exposure portion that is provided at an end of the second chamber wall opposite to the second chamber opening and that is exposed through the second through opening of the fourth cover, and wherein the first contact surface and the second contact surface are configured to contact each other based on the first tray and the second tray being joined. ### Claim 2 (depends on 1) The ice maker of claim 1, wherein the first exposure portion and the second exposure portion are configured to be exposed to cold air during an ice making process. ### Claim 3 (depends on 1) The ice maker of claim 1, further comprising: a first ejector configured to pass through the first through hole to thereby separate an ice piece from the first chamber wall; and a second ejector configured to pass through the second through hole to thereby separate the ice piece from the second chamber wall. ### Claim 4 (depends on 1) The ice maker of claim 1, wherein the first tray is fixed at a position, and wherein the second tray is configured to move relative to the first tray between (i) a closed position at which the first tray and the second tray are joined and (ii) an open position at which the first tray and the second tray are separated from each other. ### Claim 5 (depends on 4) The ice maker of claim 4, further comprising a first ejector that is configured to, based on the second tray moving from the closed position to the open position, move relative to the first tray to thereby discharge an ice piece from the first tray. ### Claim 6 (depends on 5) The ice maker of claim 5, wherein the first ejector is configured to pass through the first through hole to thereby discharge the ice piece from the second tray. ### Claim 7 (depends on 5) The ice maker of claim 5, further comprising a second ejector that is fixed at a position and is configured to discharge the ice piece from the second tray based on the second tray moving from the closed position to the open position. ### Claim 8 (depends on 7) The ice maker of claim 7, wherein the second ejector is configured to pass through the second through hole to thereby discharge the ice piece from the second tray. ### Claim 9 (depends on 4) The ice maker of claim 4, wherein the first chamber is recessed from the first contact surface in a first direction, wherein the second chamber is recessed from the second contact surface in a second direction, the second direction being opposite to the first direction in a state in which the second tray is in the closed position, wherein the first exposure portion is provided at the end of the first chamber wall in the first direction from the first contact surface, and wherein the second exposure portion is provided at the end of the second chamber wall in the second direction from the second contact surface. ### Claim 10 (depends on 1) The ice maker of claim 1, wherein the first exposure portion is provided at an endmost portion of the first chamber, and wherein the second exposure portion is provided at an endmost portion of the second chamber. ### Claim 11 (depends on 1) The ice maker of claim 1, wherein the first extension portion defines a first tray through hole, wherein one of the first cover or the second cover comprises a first boss, wherein the other one of the first cover or the second cover defines a first coupling groove, and wherein the first boss passes through the first tray through hole and is inserted into the first coupling groove. ### Claim 12 (depends on 1) The ice maker of claim 1, wherein the second cover defines a first opening that exposes the first contact surface, and wherein the third cover defines a second opening that exposes the second contact surface. ### Claim 13 A refrigerator, comprising: a cabinet defining a storage space; and an ice maker provided in the storage space, wherein the ice maker comprises: a first tray made of a flexible material, the first tray comprising (i) a first chamber wall that defines a first chamber and (ii) a first extension portion that extends outward from the first chamber wall, a second tray made of a flexible material, the second tray comprising (i) a second chamber wall that defines a second chamber and (ii) a second extension portion that extends outward form the second chamber wall, wherein the first chamber and the second chamber are configured to define an ice chamber based on the first tray and the second tray being joined, a first cover configured to support the first extension portion at a first side of the first tray, the first cover defining a first through hole, a second cover configured to support the first extension portion at a second side of the first tray opposite to the first side of the first tray, wherein the first cover, the first tray, and the second cover are configured to be coupled to one another, a third cover configured to support the second extension portion at a first side of the second tray, and a fourth cover configured to support the second extension portion at a second side of the second tray opposite to the first side of the second tray, the fourth cover defining a second through hole, wherein the third cover, the second tray, and the fourth cover are configured to be coupled to one another, wherein the first chamber wall comprises: a first contact surface that is provided circumferentially around at an edge portion of the first chamber and defines a first chamber opening, and a first exposure portion that is provided at an end of the first chamber wall opposite to the first chamber opening and that is exposed through the first through opening of the first cover, wherein the second chamber wall comprises: a second contact surface that is provided circumferentially around at an edge portion of the second chamber and defines a second chamber opening, and a second exposure portion that is provided at an end of the second chamber wall opposite to the second chamber opening and that is exposed through the second through opening of the fourth cover, and wherein the first contact surface and the second contact surface are configured to contact each other based on the first tray and the second tray being joined. ### Claim 14 (depends on 13) The refrigerator of claim 13, wherein the first exposure portion and the second exposure portion are configured to be exposed to cold air during an ice making process. ### Claim 15 (depends on 13) The refrigerator of claim 13, wherein the first tray is fixed at a position, and wherein the second tray is configured to move relative to the first tray between (i) a closed position at which the first tray and the second tray are joined and (ii) an open position at which the first tray and the second tray are separated. ### Claim 16 (depends on 15) The refrigerator of claim 15, further comprising a first ejector that is configured to, based on the second tray moving from the closed position to the open position, pass through the first through hole to thereby discharge an ice piece from the first tray. ### Claim 17 (depends on 16) The refrigerator of claim 16, further comprising a second ejector that is fixed at a position and is configured to, based on the second tray moving from the closed position to the open position, pass through the second through hole to thereby discharge the ice piece from the second tray. ### Claim 18 (depends on 15) The refrigerator of claim 15, wherein the first chamber is recessed from the first contact surface in a first direction, wherein the second chamber is recessed from the second contact surface in a second direction, the second direction being opposite to the first direction in a state in which the second tray is in the closed position, wherein the first exposure portion is provided at the end of the first chamber wall in the first direction from the first contact surface, and wherein the second exposure portion is provided at the end of the second chamber wall in the second direction from of the second contact surface. ### Claim 19 (depends on 13) The refrigerator of claim 13, wherein the first exposure portion is provided at an endmost portion of the first chamber, and wherein the second exposure portion is provided at an endmost portion of the second chamber. ### Claim 20 (depends on 13) The refrigerator of claim 13, wherein the first extension portion defines a first tray through hole, wherein one of the first cover or the second cover comprises a first boss, wherein the other one of the first cover or the second cover comprises a first coupling groove, and wherein the first boss passes through the first through hole and is inserted into the first coupling groove.