# US 11,906,232 B2 · Refrigerator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,906,232 B2 - Document ID: US11906232B2 - Status: Granted - Kind: B2 - Application number: 17/949,466 - Filed: 2022-09-21 - Published: 2023-01-26 - Granted: 2024-02-20 - Earliest claimed: 2018-04-05 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Myoungju Kang; Deokhyun Youn; Jangseok Lee - Web page: https://patentgrep.com/patent/US11906232B2 ## CPC - F25D 11/02: with cooling compartments at different temperatures - F16L 59/065: using vacuum (F16L59/075 takes precedence) - F25D 21/04: Preventing the formation of frost or condensate - F25D 23/02: Doors; Covers (F25D23/08 takes precedence {locks or fastenings E05B65/0042}) - F25D 23/06: Walls (F25D23/08 takes precedence; containers with thermal insulation B65D81/38) - F25D 23/065: {Details} - F25D 23/066: {Liners} - F25D 23/069: {Cooling space dividing partitions} - F25D 23/082: {Strips} - F25D 23/087: {Sealing strips} - F25D 2201/14: using subatmospheric pressure - 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) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL ## Abstract A refrigerator includes a vacuum adiabatic body having a storage space to store a product and a door to open or close the storage space. The main body includes a first plate and perforation plate. A cool air supply gap through which cool aft flows is formed between the first plate and the perforation plate. At least two holes through which cool air is discharged to the storage space are formed in the perforation plate. The first plate may be a wall of the main body. ## Claims ### Claim 1 A vacuum adiabatic body, comprising: a first plate; a second plate, a vacuum space being provided between the first plate and the second plate; a support configured to maintain a distance between the first plate and second plate, the support being positioned to contact or to be adjacent to the first plate; and a perforation plate spaced apart from the first plate by a gap to allow passage of cool air, the perforation plate having at least one hole through which the cool air is discharged from the gap. ### Claim 2 (depends on 1) The vacuum adiabatic body of the claim 1, wherein the first plate includes at least one wall to define a first space to store items, and wherein the at least one hole is configured to discharge the cool air into the first space. ### Claim 3 (depends on 2) The vacuum adiabatic body of claim 2, wherein the at least one wall includes a rear wall, a pair of side walls and an upper wall, and wherein the perforation plate is provided at a position spaced apart from at least one of the rear or the upper walls. ### Claim 4 (depends on 3) The vacuum adiabatic body of claim 3, wherein the perforation plate is spaced apart from and frontward of the rear wall, and wherein the perforation plate extends across an entirety of the rear wall. ### Claim 5 (depends on 3) The vacuum adiabatic body of claim 3, wherein the perforation plate is spaced apart from and downward of the upper wall, and wherein the perforation plate extends across an entirety of the upper wall. ### Claim 6 (depends on 1) The vacuum adiabatic body according to claim 1, wherein the perforation plate is provided at a position spaced apart from the rear wall and has an upper portion and a lower portion, the upper portion of the partition plate being configured to discharge a relatively larger amount of the cool air than the lower portion of the partition plate. ### Claim 7 (depends on 6) The vacuum adiabatic body according to claim 6, wherein at least one hole includes at least one first hole provided in the upper portion of the perforation plate and at least one second hole provided in the lower portion of the partition plate, and wherein the first hole is relatively larger than the second hole. ### Claim 8 (depends on 6) The vacuum adiabatic body according to claim 6, wherein the at least hole includes at least three holes, wherein a number of the holes provided in the upper portion of the partition plate is greater than a number of the holes provided in the lower portion of the partition plate. ### Claim 9 (depends on 1) The vacuum adiabatic body according to claim 1, wherein the perforation plate is provided at a position spaced apart from the upper wall, and the perforation plate has a front portion and a rear portion, the front portion of the partition plate being configured to discharge a relatively larger amount of the cool air than the rear portion of the partition plate. ### Claim 10 (depends on 9) The vacuum adiabatic body according to claim 9, wherein at least one hole includes at least one first hole provided in the front portion of the perforation plate and at least one second hole provided in the rear portion of the perforation plate, and wherein the first hole is larger than the second hole. ### Claim 11 (depends on 9) The vacuum adiabatic body according to claim 9, wherein the at least hole includes at least three holes, wherein a number of the holes provided in the front portion of the partition plate is relatively greater than a number of the holes provided in the rear portion of the partition plate. ### Claim 12 (depends on 2) The vacuum adiabatic body according to claim 2, further comprising a door configured to open or close the first space. ### Claim 13 (depends on 1) The vacuum adiabatic body according to claim 1, wherein the at least hole includes a plurality of holes arranged in at least two columns and at least two rows. ### Claim 14 (depends on 1) The vacuum adiabatic body according to claim 1, wherein the at least one hole includes a plurality of holes that are distributed across an entire surface of the perforation plate. ### Claim 15 (depends on 1) The vacuum adiabatic body according to claim 1, wherein the at least one hole includes a plurality of holes that are distributed across the entire surface of the perforation plate at an uneven density. ### Claim 16 A vacuum adiabatic body, comprising: a first plate; a second plate; a vacuum space being provided between the first plate and the second plate; a support configured to maintain a distance between the first plate and second plate, the support being positioned to contact or to be adjacent to the first plate; a cover spaced apart from the first plate and having at least one hole through which cool air is discharged; and a cooling air passage formed between the first plate and the cover. ### Claim 17 (depends on 16) The vacuum adiabatic body according to claim 16, wherein the cover includes a cooling duct that is spaced apart from and forward of the first plate, and wherein a division wall is provided between the cooling duct and the first plate, and the divisional wall is configured to divide an inner space defined by the first plate and the cooling duct. ### Claim 18 (depends on 16) The vacuum adiabatic body according to claim 16, wherein the cover includes a perforation plate provided at a position adjacent to the first plate, and wherein the perforation plate extends across an entirety of the first plate. ### Claim 19 A vacuum adiabatic body, comprising: a first plate; a second plate, a vacuum space being provided between the first plate and the second plate; a support configured to maintain a distance between the first plate and second plate, the support being positioned to contact or to be adjacent to the first plate; and a perforation plate spaced apart from the first plate by a gap through which cool air passes, wherein the perforation plate includes a plurality of holes that have a size and a density configured to increase in a downstream flow direction of the cool air in the gap. ### Claim 20 (depends on 19) The vacuum adiabatic body of claim 19, wherein the first plate includes a rear wall, a pair of side walls and an upper wall, wherein the perforation plate includes a first perforation plate that is provided at a position spaced apart from the rear wall, and a second perforation plate that is provided at a position spaced apart from the upper wall, wherein the plurality of holes include first holes included in the first perforation plate, and the size and the density of the first holes increase in a direction of an upward stream of the cool air flowing through the gap, and wherein the plurality of holes include second holes included in the second perforation plate, and the size and the density of the second holes increase in a direction of a frontward stream of the cool air flowing through the gap.