Range hood and method and device for controlling range hood

Abstract

The invention relates to the technical field of intelligent household appliances, and discloses a range hood comprising a draught fan, a smoke exhaust passageway, an air supplement passageway, an air volume adjusting device, a harmful gas sensor and a processor assembly. The draught fan comprises a first air outlet and a second air outlet. The smoke exhaust passageway communicates with the first air outlet. The air supplement passageway communicates with the second air outlet. The air volume adjusting device is arranged on one side of the second air outlet and can adjust the opening degree of the second air outlet. The harmful gas sensor is used for acquiring indoor harmful gas concentration. The processor assembly is used for confirming the indoor harmful gas concentration obtained by the harmful gas sensor and controlling the air volume adjusting device to adjust the opening degree of the second air outlet according to the indoor harmful gas concentration. In the range hood, the situation that the concentration of harmful gas in a kitchen is increased due to incomplete filtration of cooking fumes in the air supplement process, and then the body health of a user is affected is prevented. The invention further discloses a method and device for controlling the range hood.

Description

technical field [0001] The present application relates to the technical field of smart home appliances, for example, to a smoke machine, a method and a device for controlling the smoke machine. Background technique [0002] At present, the hood has become an indispensable household appliance in people's life. The fume in the kitchen can be discharged through the hood, which can make the environment in the kitchen cleaner and benefit the health of the user. Therefore, the efficiency of the range hood can be improved. The problem that needs to be solved in this field has been, especially in the relatively narrow space of the kitchen, because the rapid suction of the hood will cause negative pressure in the kitchen, thereby reducing the efficiency of the smoke extraction of the hood. [0003] In the related art, it is possible to reduce the negative pressure in the kitchen by introducing fresh air into the kitchen or improving the flue of the range hood so that part of the fume...

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Problems solved by technology

[0003] In the related art, it is possible to reduce the negative pressure in the kitchen by introducing fresh air into the kitchen or improving the flue of the range hood so that part of the fume is filtered and purified, and then re-discharged into the kitchen to reduce the negative pressure in the kitchen and achieve the effect of improving the efficiency of the range hood. When supplementing the air, it usually supplements a fixed air volume, or controls the supplementary air according to the opening and closing of the doors and windows. Although it has a certain effect of eliminating negative pressure in the kitchen, the control accuracy is poor, and the filtered oil fume is used to supplement the air in the kitchen. At the same time, it will lead to an increase in the concentration of harmful gases in the kitchen, endangering the health of users

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