An intelligent noise reduction method for a range hood

Abstract

The invention relates to an intelligent noise reduction method for a range hood, which is characterized in that: Step 1, collecting real-time sound signals during the operation of the range hood, if the sound signal contains a person, enter step 2; step 2, obtain the user's sound pressure value and The sound pressure value of the background noise; step 3, if the sound pressure value of the user minus the sound pressure value of the background noise is less than or equal to the preset threshold, go to step 4; step 4, detect the resistance in the flue connected to the exhaust port of the range hood and the firepower of the cooker , if the resistance in the flue is less than or equal to the preset resistance threshold, and the firepower of the stove is less than or equal to the preset firepower threshold, go to step 5; step 5, reduce the range hood fan speed, and return to step 1 after a preset time delay. Compared with the prior art, the present invention can satisfy the user's demand on the oil smoke performance of the range hood under the condition of improving the user's dialogue quality.

Description

technical field [0001] The invention relates to an intelligent noise reduction method for a range hood. Background technique [0002] Existing range hoods are generally noisy, and the national standard stipulates that the A-class sound power level is 72dB (A). However, under this noise standard, it still affects the user's call quality in the kitchen. Many users report that they cannot communicate happily with others while cooking in the kitchen. The reason is that the kitchen is noisy, which affects the quality of calls between family members. With the improvement of users' requirements for the quality of life, the requirements for kitchen noise are becoming more and more stringent. [0003] Existing range hoods adapted to user scenarios have the following disadvantages in noise reduction processing: [0004] 1. When using the range hood, due to the high noise, the user may not be able to hear the other party's speech clearly when talking in the kitchen. [0005] 2. The...

AI Technical Summary

Problems solved by technology

[0004] 1. When using the range hood, due to the high noise, the user may not be able to hear the other party's speech clearly when talking in the kitchen

[0005] 2. The speed of the range hood is adjusted by detecting the resistance of the flue alone, but the firepower of the cooker is not considered; because when the resistance of the flue is small, if the firepower is large, it means that the user is performing actions such as stir-frying. It is not realistic to reduce the speed at this moment user usage;

[0006] 3. The speed of the range hood is adjusted by detecting the firepower alone, but the resistance of the flue is not considered; however, when it is used in a concentrated high-rise, it is difficult to exhaust the smoke, so a high speed is still required, and the static pressure cannot be reduced;

[0007] To sum up, the current development of range hood noise does not guarantee the effect of satisfying the user's call quality

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