Range hood and lampblack detection method and wind speed regulating method of range hood

Abstract

The invention discloses a method for detecting the lampblack concentration of a range hood. The method comprises the steps that the intensity of light penetrating through a lampblack area and the intensity of light, from the same light source as the light penetrating through the lampblack area, reflected by the lampblack area are detected through two light receivers respectively, and the lampblack concentration of the lampblack area or the variation tendency of the lampblack concentration of the lampblack area is judged through the difference value between the light intensities received by the two light receivers. The invention further discloses an automatic wind speed regulating method of the range hood. The automatic wind speed regulating method of the range hood is characterized by comprising the steps that the intensity of the light penetrating through the lampblack area and the intensity, from the same light source as the light penetrating through the lampblack area, of the light reflected by the lampblack area are detected through the two light receivers respectively, and the difference value between the light intensities received by the two light receivers is calculated. The invention further discloses the range hood capable of regulating the wind speed automatically. According to the range hood capable of regulating the wind speed automatically, the wind speed of a draught fan can be regulated automatically, operation is easy, and energy saving is achieved while contamination caused by kitchen lampblack is fully prevented.

Description

technical field [0001] The invention relates to a range hood, a smoke detection method and a wind speed adjustment method thereof. Background technique [0002] The composition of kitchen fumes is very complex, mainly including water, aldehydes, ketones, alcohols, etc., including volatile nitrosamines, heterocyclic amines and other known mutagenic and carcinogenic substances, as well as tar, carbon monoxide, and carbon dioxide. It is not only harmful to human health, but also pollutes the sanitary environment of the kitchen, so it must be removed in time. [0003] The wind speed of the traditional range hood needs to be adjusted manually, which is not scientific and accurate enough, and the extraction of oil fume does not meet the health requirements, and it is often inconvenient due to forgetting to turn on the switch of the range hood or needing to adjust the range hood during the cooking process. Contents of the invention [0004] The object of the present invention is...

AI Technical Summary

Problems solved by technology

It is not only harmful to human health, but also pollutes the sanitary environment of the kitchen, so it must be removed in time

[0003] The wind speed of the traditional range hood needs to be adjusted manually, which is not scientific and accurate enough, and the extraction of oil fume does not meet the health requirements, and it is often inconvenient due to forgetting to turn on the range hood switch or needing to adjust the range hood during cooking.

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