# US 12,181,155 B2 · Cooking oven with steam generator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,155 B2 - Document ID: US12181155B2 - Status: Granted - Kind: B2 - Application number: 17/422,055 - Filed: 2020-02-21 - Published: 2022-04-21 - Granted: 2024-12-31 - Earliest claimed: 2019-02-26 - Assignees: Electrolux Professional S.p.A. - Applicants: Electrolux Professional S.P.A. - Inventors: Davide Pelliccia; Michele Simonato; Mirko Sfreddo; Fabio Burlon; Denis Marson; Franco Tassan Mangina; Alberto Foda; Antonio Asquini; Riccardo Furlanetto - Web page: https://patentgrep.com/patent/US12181155B2 ## CPC - F24C 14/005: {using a cleaning liquid} - F24C 15/327: {with air moisturising} - A47J 27/04: for cooking food in steam; Devices for extracting fruit juice by means of steam {; Vacuum cooking vessels (steam-heated vessels for hotels, restaurants or canteens A47J27/16)} - A47J 27/16: heated by steam - B08B 9/093: by the force of jets or sprays ({B08B9/0813} , B08B9/20 take precedence) - F24C 15/14: Spillage trays or grooves - A47J 2027/043: {for cooking food in steam} - B08B 2209/08: Details of machines or methods for cleaning containers, e.g. tanks - F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION - A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES - B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL ## Abstract The present invention is a cooking oven for foodstuffs, comprising: a cooking chamber, wherein foodstuffs can be placed for being cooked, having a bottom wall provided with a first cooking chamber outlet positioned in such a way to receive grease collected in the bottom wall; a grease conduit configured for draining grease from the cooking chamber, wherein the first cooking chamber outlet is fluidly connected to the grease conduit; a heating device configured for heating the internal of the cooking chamber; and a vapour outlet duct configured for discharging vapour from the cooking chamber. The bottom wall of the cooking chamber is further provided with a second cooking chamber outlet, distinct from the first cooking chamber outlet and fluidly connected to the vapour outlet duct. ## Claims ### Claim 1 A cooking oven (1) for foodstuffs, comprising: a cooking chamber (2), wherein foodstuffs can be placed for being cooked, having a bottom wall (3) provided with a first cooking chamber outlet (4) positioned at a lowermost point along said bottom wall (3) to receive grease that drips from the foodstuffs and collects on said bottom wall (3); a grease conduit (6) configured for draining grease from said cooking chamber (2), wherein said first cooking chamber outlet (4) is fluidly connected to said grease conduit (6); a heating device (8) configured for heating the internal of said cooking chamber (2); and a vapour outlet duct (9) configured for discharging vapour from said cooking chamber (2); wherein said bottom wall (3) of said cooking chamber (2) is provided with a second cooking chamber outlet (10), distinct from said first cooking chamber outlet (4) and fluidly connected to said vapour outlet duct (9); and wherein an inlet border (10a) of said second cooking chamber outlet (10) is placed at a raised position with respect to the inlet border (4a) of said first cooking chamber outlet (4), such that, in use, grease collected on said bottom wall (3) first enters said first cooking chamber outlet (4) rather than said second cooking chamber outlet (10). ### Claim 2 (depends on 1) The cooking oven (1) according to claim 1, wherein said bottom wall (3a) of the cooking chamber (2) is at least partially funnel-shaped, at least at or in proximity to an inlet border (4a) of said first cooking chamber outlet (4). ### Claim 3 (depends on 1) The cooking oven (1) according to claim 1, wherein said second cooking chamber outlet (10) is fluidly connected, in addition to said vapour outlet duct (9), to said grease conduit (6). ### Claim 4 (depends on 3) The cooking oven (1) according to claim 3, wherein said second cooking chamber outlet (10) is fluidly connected to said grease conduit (6) via a connection duct (50) whose end portion (50a) protrudes within said grease conduit (6), substantially perpendicularly to an internal surface of the latter. ### Claim 5 (depends on 1) The cooking oven (1) according to claim 1, and further comprising a cleaning system (70) including a circulation system (7) configured for pumping liquid out of said cooking chamber (2) and for pumping such liquid, or a part thereof, again in said cooking chamber (2). ### Claim 6 (depends on 5) The cooking oven (1) according to claim 5, wherein said first cooking chamber outlet (4) is fluidly connected, in addition to said grease conduit (6), to said circulation system (7). ### Claim 7 (depends on 5) The cooking oven (1) according to claim 5, wherein said second cooking chamber outlet (10) is fluidly connected, in addition to said vapour outlet duct (9), to said circulation system (7). ### Claim 8 (depends on 5) The cooking oven (1) according to claim 5, wherein said circulation system (7) comprises a circulation pump (7a), an aspiration conduit (7b) connecting said circulation pump (7a) to said first cooking chamber outlet (4) and/or to said second cooking chamber outlet (10), and a delivery conduit (7c) connecting said circulation pump (7a) to a washing/rinsing liquid circulation outlet (13) provided in said cooking chamber (2) and configured for allowing washing/rinsing liquid to enter said cooking chamber (2). ### Claim 9 (depends on 5) The cooking oven (1) according to claim 5, wherein said cleaning system (70) comprises a washing/rinsing liquid introduction system (16) configured for taking washing/rinsing liquid within said cooking chamber (2), said washing/rinsing liquid introduction system (16) comprising an introduction conduit (16a) fluidly connected to said cooking chamber (2) and configured for selectively supplying into the latter washing and/or rinsing liquid. ### Claim 10 (depends on 5) The cooking oven (1) according to claim 5, wherein said circulation system (7) comprises a circulation pump (7a), an aspiration conduit (7b) connecting said circulation pump (7a) to said first cooking chamber outlet (4) and/or to said second cooking chamber outlet (10), and a delivery conduit (7c) connecting said circulation pump (7a) to a washing/rinsing liquid circulation outlet (13) provided in said cooking chamber (2) and configured for allowing washing/rinsing liquid to enter said cooking chamber (2); wherein said cleaning system (70) comprises a washing/rinsing liquid introduction system (16) configured for taking washing/rinsing liquid within said cooking chamber (2), said washing/rinsing liquid introduction system (16) comprising an introduction conduit (16a) fluidly connected to said cooking chamber (2) and configured for selectively supplying into the latter washing and/or rinsing liquid; and wherein an outlet (16c) of said introduction conduit (16a) is separated from said washing/rinsing liquid circulation outlet (13), or wherein the outlet of said introduction conduit (16a) into said cooking chamber (2) coincides with said washing/rinsing liquid circulation outlet (13). ### Claim 11 (depends on 8) The cooking oven (1) according to claim 8, wherein said aspiration conduit (7b) is fluidly connected to said second cooking chamber outlet (10) via a by-pass conduit (14) fluidly connecting said aspiration conduit (7b) to said vapour outlet duct (9), to which said second cooking chamber outlet (10) is fluidly connected. ### Claim 12 (depends on 5) The cooking oven (1) according to claim 5, wherein said cleaning system (70) comprises a washing/rinsing additive supplying system (27) configured for supplying washing and/or rinsing additives to the internal of said cooking chamber (2), and/or a washing/rinsing additive multi-dosing system (31) configured for supplying to the internal of said cooking chamber (2) metered amounts of washing and/or rinsing additives. ### Claim 13 (depends on 5) The cooking oven (1) according to claim 5, comprising a steam supply system (35) configured for producing and supplying steam into the cooking chamber (2), wherein said cleaning system (70) is configured for supplying a washing/rinsing liquid to said steam supply system (35). ### Claim 14 A cooking oven (1) for foodstuffs, comprising: a cooking chamber (2), wherein foodstuffs can be placed for being cooked, having a bottom wall (3) provided with a first cooking chamber outlet (4) positioned in such a way to receive grease that drips from the foodstuffs and collects on said bottom wall (3); a grease conduit (6) configured for draining grease from said cooking chamber (2), wherein said first cooking chamber outlet (4) is fluidly connected to said grease conduit (6); a heating device (8) configured for heating the internal of said cooking chamber (2); and a vapour outlet duct (9) configured for discharging vapour from said cooking chamber (2); wherein said bottom wall (3) of said cooking chamber (2) is provided with a second cooking chamber outlet (10), distinct from said first cooking chamber outlet (4) and fluidly connected to said vapour outlet duct (9); wherein an inlet border (10a) of said second cooking chamber outlet (10) is placed at a raised position with respect to the inlet border (4a) of said first cooking chamber outlet (4), such that, in use, grease collected in said bottom wall (3) first enters said first cooking chamber outlet (4) rather than said second cooking chamber outlet (10); and wherein a shield element (300) is positioned to prevent grease from entering said second cooking chamber outlet (10). ### Claim 15 (depends on 14) The cooking oven (1) according to claim 14, wherein said bottom wall (3a) of the cooking chamber (2) is at least partially funnel-shaped, at least at or in proximity to an inlet border (4a) of said first cooking chamber outlet (4). ### Claim 16 (depends on 14) The cooking oven (1) according to claim 14, wherein said second cooking chamber outlet (10) is fluidly connected, in addition to said vapour outlet duct (9), to said grease conduit (6). ### Claim 17 (depends on 16) The cooking oven (1) according to claim 16, wherein said second cooking chamber outlet (10) is fluidly connected to said grease conduit (6) via a connection duct (50) whose end portion (50a) protrudes within said grease conduit (6), substantially perpendicularly to an internal surface of the latter. ### Claim 18 (depends on 14) The cooking oven (1) according to claim 14, and further comprising a cleaning system (70) including a circulation system (7) configured for pumping liquid out of said cooking chamber (2) and for pumping such liquid, or a part thereof, again in said cooking chamber (2). ### Claim 19 (depends on 18) The cooking oven (1) according to claim 18, wherein said first cooking chamber outlet (4) is fluidly connected, in addition to said grease conduit (6), to said circulation system (7). ### Claim 20 (depends on 18) The cooking oven (1) according to claim 18, wherein said second cooking chamber outlet (10) is fluidly connected, in addition to said vapour outlet duct (9), to said circulation system (7). ### Claim 21 (depends on 18) The cooking oven (1) according to claim 18, wherein said circulation system (7) comprises a circulation pump (7a), an aspiration conduit (7b) connecting said circulation pump (7a) to said first cooking chamber outlet (4) and/or to said second cooking chamber outlet (10), and a delivery conduit (7c) connecting said circulation pump (7a) to a washing/rinsing liquid circulation outlet (13) provided in said cooking chamber (2) and configured for allowing washing/rinsing liquid to enter said cooking chamber (2). ### Claim 22 (depends on 18) The cooking oven (1) according to claim 18, wherein said cleaning system (70) comprises a washing/rinsing liquid introduction system (16) configured for taking washing/rinsing liquid within said cooking chamber (2), said washing/rinsing liquid introduction system (16) comprising an introduction conduit (16a) fluidly connected to said cooking chamber (2) and configured for selectively supplying into the latter washing and/or rinsing liquid. ### Claim 23 (depends on 18) The cooking oven (1) according to claim 18, wherein said circulation system (7) comprises a circulation pump (7a), an aspiration conduit (7b) connecting said circulation pump (7a) to said first cooking chamber outlet (4) and/or to said second cooking chamber outlet (10), and a delivery conduit (7c) connecting said circulation pump (7a) to a washing/rinsing liquid circulation outlet (13) provided in said cooking chamber (2) and configured for allowing washing/rinsing liquid to enter said cooking chamber (2); wherein said cleaning system (70) comprises a washing/rinsing liquid introduction system (16) configured for taking washing/rinsing liquid within said cooking chamber (2), said washing/rinsing liquid introduction system (16) comprising an introduction conduit (16a) fluidly connected to said cooking chamber (2) and configured for selectively supplying into the latter washing and/or rinsing liquid; and wherein an outlet (16c) of said introduction conduit (16a) is separated from said washing/rinsing liquid circulation outlet (13), or wherein the outlet of said introduction conduit (16a) into said cooking chamber (2) coincides with said washing/rinsing liquid circulation outlet (13). ### Claim 24 (depends on 21) The cooking oven (1) according to claim 21, wherein said aspiration conduit (7b) is fluidly connected to said second cooking chamber outlet (10) via a by-pass conduit (14) fluidly connecting said aspiration conduit (7b) to said vapour outlet duct (9), to which said second cooking chamber outlet (10) is fluidly connected. ### Claim 25 (depends on 18) The cooking oven (1) according to claim 18, wherein said cleaning system (70) comprises a washing/rinsing additive supplying system (27) configured for supplying washing and/or rinsing additives to the internal of said cooking chamber (2), and/or a washing/rinsing additive multi-dosing system (31) configured for supplying to the internal of said cooking chamber (2) metered amounts of washing and/or rinsing additives. ### Claim 26 (depends on 18) The cooking oven (1) according to claim 18, comprising a steam supply system (35) configured for producing and supplying steam into the cooking chamber (2), wherein said cleaning system (70) is configured for supplying a washing/rinsing liquid to said steam supply system (35).