Oil fume concentration detection device

Abstract

The invention discloses an intelligent kitchen ventilator. The intelligent kitchen ventilator comprises a main control board and a smoke detector connected with the main control board; the main control board is used for switching electric signals generated by the smoke detector into digital values and using an average value of the multiple digital values obtained lately as a standard value; according to the standard value, the main control board obtains a variance of the multiple digital values and judges whether smoke exists or not based on a ratio of the variance to a smokeless reference value; the main control board is further used for determining the smoke concentration according to the latest digital value in the multiple digital values when existing smoke is judged and controlling the rotating speed of a kitchen ventilator fan according to the smoke concentration. By means of the intelligent kitchen ventilator, easy diffusion of the smoke in the air or effects of other interference elements of an outside environment and the like on smoke detection can be prevented, the anti-interference capability is high, the detection precision can be improved, the intelligent kitchen ventilator is beneficial for adjusting the kitchen ventilator fan blowing rate, and the intelligence degree is high.

Description

technical field [0001] The invention relates to the technical field of home appliances, in particular to an oil fume concentration detection device. Background technique [0002] Range hoods are a necessity in most kitchens, but most range hoods are manually switched, and the air volume is fixed. According to the size of the range hood, the fan gear needs to be manually adjusted, which will cause inconvenience during cooking. And maintaining the maximum wind force during the cooking process will also bring about problems of energy consumption and noise. At the end of cooking, the general range hood will still work for a period of time to remove residual oil fume, and the user needs to wait for a period of time before shutting it down. Therefore, some range hoods in the traditional technology are not highly intelligent. In addition, although the air volume can be automatically adjusted through oil fume detection, it is easily disturbed by external environmental factors, the ...

AI Technical Summary

Problems solved by technology

[0002] Range hoods are a necessity in most kitchens, but most range hoods are manually switched, and the air volume is fixed. According to the size of the range hood, the fan gear needs to be adjusted manually, which will cause inconvenience during cooking.

However, maintaining the maximum wind force during the cooking process will also bring about energy consumption and noise problems.

At the end of cooking, the general range hood will still work for a period of time to remove the residual oil fume, and the user needs to wait for a period of time before turning it off. Therefore, some range hoods in the traditional technology are not highly intelligent.

In addition, although the air volume can be automatically adjusted through oil fume detection, it is easily disturbed by external environmental factors, the detection accuracy is not high, and the air volume of the fan cannot be effectively controlled, resulting in the automatic adjustment of the air volume of the fan.

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