Intelligent adjusting method for noise of extractor hood

Abstract

The invention relates to an intelligent adjusting method for noise of an extractor hood. An ideal rotating speed-noise relation list between the corresponding operating rotating speed and the noise range value of the extractor hood in an ideal operating state is established in advance; the real-time external noise value at the air inlet of the extractor hood and the real-time operation noise valueduring stable operation of the extractor hood are detected and the actual operation noise value of the extractor hood under the actual noise condition is accurately obtained in a manner of combiningthe internal noise and the external noise of the extractor hood; the current running rotating speed of the extractor hood is adjusted to the running rotating speed corresponding to the running noise true value in the ideal rotating speed-noise relation list when presence of the user below the extractor hood is determined according to the detection of the real-time back pressure value of the smokeexhaust channel and the temperature in the preset distance range below the range hood so that the rotating speed of the extractor hood during operation can be adjusted along with the generated noise and the noise of the extractor hood during operation is adjusted to the noise range in the ideal state and the influence on the use experience of the user is prevented.

Description

technical field [0001] The invention relates to the field of range hoods, in particular to an intelligent adjustment method for the noise of the range hood. Background technique [0002] As people pay more attention to the quality of life at home and their health, range hoods have become an essential equipment in people's kitchens. At the same time, due to the continuous improvement of users' requirements for cooking environment and cooking experience, range hoods no longer only have a single suction and discharge function. [0003] As we all know, during the working process of the range hood, its air volume and noise are two parameters that show "one trades off and the other trades off". As the two most important indicators to measure the comprehensive ability of the range hood, the two parameters of air volume and noise cannot be neglected. Taking into account the differences in usage habits, groups of users and usage environments of different users, the air volume and n...

AI Technical Summary

Problems solved by technology

[0005] However, there are some problems in the above-mentioned method of adjusting the noise of the range hood to the user's satisfaction level: first, because the noise detection sensor is not clearly set on the range hood, the internal noise value of the range hood detected by it cannot be true. The current operating status of the range hood can be accurately reflected; secondly, the adjustment of the air volume of the range hood is still based on the adjustment scheme that has already been set up, and it is impossible to realize the self-adaptive adjustment between the air volume of the range hood and the operating noise value of the range hood

However, since the noise reduction method of the invention patent application CN108731045A needs to always ensure that the real-time amplitude of the generated noise reduction is the same as the real-time operating noise amplitude of the oil suction machine, this requires the use of precise noise filtering technology to remove other external noises for oil suction The interference of the noise of the hood will undoubtedly increase the difficulty of technical realization and the manufacturing cost of the hardware noise reduction device

Images