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

Abstract

The invention discloses a method for measuring 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 light receiving direction of the light receiver receiving the light penetrating through the lampblack area and the light emitting direction of the light source are located on the same straight line, and the straight line penetrates through the central point of a lampblack collection cavity of the range hood. The light receiver receiving the light reflected by the lampblack area and the light source are arranged in a containing hole in the side wall of the lampblack collection cavity of the range hood. The invention further discloses a range hood capable of regulating the wind speed automatically and a wind speed regulating method of the range hood. According to the range hood, the wind speed of a draught fan can be adjusted automatically, operation is convenient, 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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