Hob system for being inserted into a kitchen worktop, comprising 1.1. at least one vapour extraction device for extracting cooking vapours downwards, with 1.1.1. at least one cooking vapour inlet opening for sucking in cooking vapours in a downward direction, 1.1.2. at least one fan unit for sucking in the cooking vapours, which has a fan wheel and a fan motor for driving the fan wheel in rotation, and 1.1.3. a suction duct for fluid-conducting connection of the at least one cooking vapour inlet opening to the at least one fan unit, which is arranged at least in sections below the fan wheel, and 1.2. at least one hob, with 1.2.1. a hob plate for carrying cooking products, and 1.2.2. at least one hot plate for heating the cooking products arranged on the hob plate, 1.3. wherein the hob system is designed as an assembly unit, characterized 1.4. by fastening the fan motor to a supporting structure arranged below the fan wheel in such a manner that the weight force of the fan motor is transmitted predominantly, meaning to a proportion of more than 50 %, to the supporting structure in the form of compressive forces, and 1.5. by a liquid barrier arranged between the cooking vapour inlet opening and the fan motor, upstream of the fan wheel, 1.5.1 wherein the liquid barrier prevents overflow liquid, which penetrates through the cooking vapour inlet opening into the vapour extraction device, from advancing in the direction of the fan motor of the fan unit, 1.5.2 wherein the liquid barrier at least in sections bounds a liquid reservoir for receiving overflow liquid, and 1.5.3 wherein the liquid reservoir is formed by a liquid tray which can be reversibly removed from the vapour extraction device. 1.1. at least one vapour extraction device for extracting cooking vapours downwards, with 1.1.1. at least one cooking vapour inlet opening for sucking in cooking vapours in a downward direction, 1.1.2. at least one fan unit for sucking in the cooking vapours, which has a fan wheel and a fan motor for driving the fan wheel in rotation, and 1.1.3. a suction duct for fluid-conducting connection of the at least one cooking vapour inlet opening to the at least one fan unit, which is arranged at least in sections below the fan wheel, and 1.1.1. at least one cooking vapour inlet opening for sucking in cooking vapours in a downward direction, 1.1.2. at least one fan unit for sucking in the cooking vapours, which has a fan wheel and a fan motor for driving the fan wheel in rotation, and 1.1.3. a suction duct for fluid-conducting connection of the at least one cooking vapour inlet opening to the at least one fan unit, which is arranged at least in sections below the fan wheel, and 1.2. at least one hob, with 1.2.1. a hob plate for carrying cooking products, and 1.2.2. at least one hot plate for heating the cooking products arranged on the hob plate, 1.2.1. a hob plate for carrying cooking products, and 1.2.2. at least one hot plate for heating the cooking products arranged on the hob plate, 1.3. wherein the hob system is designed as an assembly unit, characterized 1.4. by fastening the fan motor to a supporting structure arranged below the fan wheel in such a manner that the weight force of the fan motor is transmitted predominantly, meaning to a proportion of more than 50 %, to the supporting structure in the form of compressive forces, and 1.5. by a liquid barrier arranged between the cooking vapour inlet opening and the fan motor, upstream of the fan wheel, 1.5.1 wherein the liquid barrier prevents overflow liquid, which penetrates through the cooking vapour inlet opening into the vapour extraction device, from advancing in the direction of the fan motor of the fan unit, 1.5.2 wherein the liquid barrier at least in sections bounds a liquid reservoir for receiving overflow liquid, and 1.5.3 wherein the liquid reservoir is formed by a liquid tray which can be reversibly removed from the vapour extraction device. 1.5.1 wherein the liquid barrier prevents overflow liquid, which penetrates through the cooking vapour inlet opening into the vapour extraction device, from advancing in the direction of the fan motor of the fan unit, 1.5.2 wherein the liquid barrier at least in sections bounds a liquid reservoir for receiving overflow liquid, and 1.5.3 wherein the liquid reservoir is formed by a liquid tray which can be reversibly removed from the vapour extraction device.