# US 11,029,074 B2 · Refrigerator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,074 B2 - Document ID: US11029074B2 - Status: Granted - Kind: B2 - Application number: 16/588,401 - Filed: 2019-09-30 - Published: 2020-01-23 - Granted: 2021-06-08 - Earliest claimed: 2015-12-11 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Tackwon Han; Junsoo Han - Web page: https://patentgrep.com/patent/US11029074B2 ## CPC - F25D 17/065: {with compartments at different temperatures} - F25D 23/069: {Cooling space dividing partitions} - F25D 25/025: {Drawers} - F25D 2317/061: through special compartments - F25D 2317/067: characterised by air ducts - F25D 2700/121: of particular compartments - F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B) ## Abstract Disclosed is a refrigerator including a cabinet, a storage compartment provided in the cabinet to form a single space in which a storage item is stored, a single door for opening or closing the space formed by the storage compartment, a first cold air supply duct and a second cold air supply duct provided respectively on left and right sides of the single storage compartment, the first cold air supply duct and the second cold air supply duct supplying different amounts of cold air, and a storage unit for being pushed into or pulled from the storage compartment in a front-and-rear direction along with the door. ## Claims ### Claim 1 A refrigerator comprising: a cabinet; a storage compartment that is provided in the cabinet and that defines a space configured to receive a storage item; a door configured to open and close the space defined by the storage compartment; a first cold air supply duct and a second cold air supply duct provided respectively on left and right sides of the storage compartment, the first cold air supply duct and the second cold air supply duct being configured to supply different amounts of cold air; and a storage unit configured to be pushed into or pulled from the storage compartment in a front-and-rear direction along with the door, the storage unit including a first storage unit provided on the left side, and a second storage unit provided on the right side; a temperature sensor that is configured to measure a temperature inside of the storage compartment; and a controller configured to, based on measurement of the temperature sensor, maintain the first storage unit and the second storage unit at different temperatures, wherein the first cold air supply duct and the second cold air supply duct are connected to a duct unit, and configured to receive cold air from the duct unit; and wherein the duct unit is provided with a first damper and a second damper, which selectively open or close the first cold air supply duct and the second cold air supply duct respectively. ### Claim 2 (depends on 1) The refrigerator according to claim 1, wherein the storage compartment defines therein the space, to which the cold air supplied from the first cold air supply duct and the second cold air supply duct moves. ### Claim 3 (depends on 1) The refrigerator according to claim 1, further comprising: an insulator located between the first storage unit and the second storage unit for separating the first storage unit and the second storage unit from each other, wherein the insulator has a greater thickness than a thickness of a wall of the first storage unit or the second storage unit. ### Claim 4 (depends on 3) The refrigerator according to claim 3, wherein the storage compartment includes an insulating partition located below the insulator. ### Claim 5 (depends on 4) The refrigerator according to claim 4, wherein the insulating partition includes a roller for supporting a bottom of the insulator so that the insulator is movable. ### Claim 6 (depends on 4) The refrigerator according to claim 4, further comprising a housing for accommodating the insulating partition, wherein the housing includes a rib protruding from an outer circumferential surface thereof. ### Claim 7 (depends on 6) The refrigerator according to claim 6, wherein the insulator includes a rib that extends downward. ### Claim 8 (depends on 1) The refrigerator according to claim 1, wherein the door and the first storage unit define a first space therebetween so that the cold air discharged from the first cold air supply duct passes through the first space. ### Claim 9 (depends on 1) The refrigerator according to claim 1, wherein the door and the second storage unit define a second space therebetween so that the cold air discharged from the second cold air supply duct passes through the second space. ### Claim 10 (depends on 1) The refrigerator according to claim 1, wherein the first storage unit and the second storage unit are located so as to be spaced apart from a bottom surface of the storage compartment. ### Claim 11 (depends on 1) The refrigerator according to claim 1, further comprising a first heater located below the first storage unit, wherein, when the first heater is operated, the second cold air supply duct supplies a greater amount of cold air than an amount of cold air supplied when the first heater is not operated. ### Claim 12 (depends on 1) The refrigerator according to claim 1, further comprising a second heater located below the second storage unit, wherein, when the second heater is operated, the first cold air supply duct supplies a greater amount of cold air than an amount of cold air supplied when the second heater is not operated. ### Claim 13 (depends on 1) The refrigerator according to claim 1, further comprising: a first heater located below the first storage unit; and a second heater located below the second storage unit, wherein, when a difference between set temperatures of the first storage unit and the second storage unit is increased, an operation factor of the first heater or the second heater that is operated is increased compared to a case where the set temperatures of the first storage unit and the second storage unit are the same. ### Claim 14 (depends on 1) The refrigerator according to claim 1, wherein, when a difference between set temperatures of the first storage unit and the second storage unit is increased, a greater amount of cold air is supplied compared to a case where the set temperatures of the first storage unit and the second storage unit are the same. ### Claim 15 (depends on 1) The refrigerator according to claim 1, further comprising: a refrigerating compartment provided in the cabinet at an upper side of the storage compartment so as to be isolated from the storage compartment; and a freezing compartment provided in the cabinet at a lower side of the storage compartment so as to be isolated from the storage compartment. ### Claim 16 (depends on 15) The refrigerator according to claim 15, wherein the duct unit is configured to supply cold air to the first cold air supply duct, the second cold air supply duct, and the refrigerating compartment. ### Claim 17 (depends on 15) The refrigerator according to claim 15, wherein the first storage unit is controlled so as to be maintained at a temperature equal to or above zero degrees, and the second storage unit is controlled so as to be maintained at a temperature equal to or below zero degrees. ### Claim 18 (depends on 15) The refrigerator according to claim 15, wherein the first storage unit is controlled so as to be maintained at a temperature similar to a control temperature of the refrigerating compartment, and the second storage unit is controlled so as to be maintained at a temperature similar to a control temperature of the freezing compartment.