# US 9,752,785 B2 · Sensor unit for a suction hood, suction hood and cooking device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,785 B2 - Document ID: US9752785B2 - Status: Granted - Kind: B2 - Application number: 13/318,234 - Filed: 2010-06-09 - Published: 2012-05-10 - Granted: 2017-09-05 - Earliest claimed: 2009-06-12 - Assignees: Electrolux Home Products Corporation N. V. - Applicants: Francesco Corleoni - Inventors: Francesco Corleoni - Web page: https://patentgrep.com/patent/US9752785B2 ## CPC - F24C 15/2021: {Arrangement or mounting of control or safety systems} - F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION ## Abstract The invention relates to a sensor unit (2) for a suction hood (1), wherein the sensor unit (2) controls the suction hood (1), wherein the sensor unit (2) comprises a, preferably first, sensor operated mode, wherein the operation of the suction hood (1) is dependent on the measured values of at least one sensor (21, 22) and to a suction hood with a sensor unit according to the invention. ## Claims ### Claim 1 Sensor unit (2) for a suction hood (1), wherein the sensor unit (2) controls or can control the suction hood (1), wherein the sensor unit (2) comprises a sensor operated mode, wherein an operation of the suction hood (1) is dependent on a measured value of at least one sensor (21, 22) wherein the at least one sensor includes a sonar distance sensor activated by proximity of a cooking vessel, and a processing unit activates the suction hood after the measured value from the sonar distance sensor exceeds a threshold value for a predefined time span. ### Claim 2 (depends on 1) Sensor unit according to claim 1, wherein the sensor unit (2) comprises a) a second mode, wherein the suction hood (1) is turned off or wherein the sensor operated mode is deactivated and b) a third, conventional mode, wherein the suction hood (1) is continuously turned on. ### Claim 3 (depends on 1) Sensor unit according to claim 1, a) wherein the at least one sensor (21, 22) includes a sensor activated by fumes, by the temperature of fumes, and/or by the concentration of certain gases. ### Claim 4 (depends on 1) Sensor unit according to claim 1, a) wherein the at least one sensor (21, 22) includes a sensor activated by chemical substances, including smells and/or b) wherein the at least one sensor (21, 22) includes a sensor activated by magnetic fields. ### Claim 5 (depends on 1) Sensor unit according to claim 1, wherein the at least one sensor (21, 22) includes a sensor activated by light. ### Claim 6 (depends on 1) Sensor unit according to claim 1, wherein the threshold value is a first threshold value, and a) wherein in the sensor operated mode, the sensor unit (2) measures actual values and the suction hood (1) is turned on, when the measured value rises above the first threshold value (62), and turned off, when the measured value falls below a second threshold value (61), wherein b) the first threshold value is lower or higher than the second threshold value or equal to the second threshold value. ### Claim 7 (depends on 1) Sensor unit according to claim 1, wherein the sensor unit (2) comprises a switching unit (23) which determines a working mode of the suction hood (1), wherein a type of measured values can be selected. ### Claim 8 (depends on 1) Suction hood with a sensor unit (2) according to claim 1. ### Claim 9 (depends on 8) Suction hood according to claim 8, a) wherein the suction hood (1) comprises a fan, for sucking air with different suction volumes, b) wherein the suction volume of the suction hood (1) depends on a level of the values measured by the sensor unit (2), c) wherein, at least for one suction volume, a change in the suction volume of the suction hood (1) is at least substantially proportional, reciprocal or in an exponential dependency to a change of the measured value. ### Claim 10 (depends on 8) Suction hood according to claim 8, a) wherein the sensor unit (2) is used as a control unit which is connected to the suction hood (1) by at least one cable (31), b) wherein the at least one cable (31) transmits a signal indicative of a desired suction volume. ### Claim 11 (depends on 8) Suction hood according to claim 8, wherein the suction hood (1) is mounted above a cooking appliance (4). ### Claim 12 (depends on 1) A cooking device with a suction hood according to claim 1, a) wherein the cooking device is a gas cooking device and/or induction cooking device and/or electric cooking device and/or b) wherein the cooking device comprises a cooking hob and/or an oven and/or c) wherein the suction hood is controllable by the cooking device in a contactless way, by the usage of the sensor unit (2). ### Claim 13 (depends on 1) Attachment of a sensor unit (2) according to claim 1 to an existing suction hood (1). ### Claim 14 A cooking system, comprising: an induction cooking device comprising a glass ceramic cooking hob; and a suction hood comprising a sensor unit, wherein the sensor unit controls or can control the suction hood, the sensor unit comprising a sensor operated mode, wherein an operation of the suction hood is dependent on a measured value of at least one sensor, and wherein the sensor unit is activated by magnetic fields, wherein the sensor unit comprises a switching unit which determines a working mode of the suction hood, wherein a type of measured values measured by the sensor unit can be selected.