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Range hood

A technology for a hood and a sound-generating device is applied in the fields of oil fume removal, household stoves/stoves, heating methods, etc., which can solve the problems of poor sound quality of hoods, and achieve the effects of improving sound quality, easy acceptance, and improving operating environment.

Active Publication Date: 2022-06-03
GUANGDONG MIDEA WHITE HOME APPLIANCE TECH INNOVATION CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a hood to solve the technical problem of poor sound quality of hood noise in the prior art

Method used

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] The terms "first" and "second" in this application are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined. Furthermore, the terms "comprising...

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Abstract

The range hood comprises a range hood main body and a sound production device, the range hood main body can form suction airflow, the sound production device is arranged on a flowing path of the suction airflow so as to generate compensation noise under the excitation action of the suction airflow, and the compensation noise and machine body noise of the range hood main body are overlapped. According to the range hood, the amplitude of the noise frequency spectrum of the range hood in the preset frequency band can be improved, the characteristic loudness ratio and the characteristic loudness change rate of the frequency spectrum of the range hood can be improved, the sound quality of the overall noise of the range hood is improved, the range hood is more easily accepted by a user, and the effect of improving the operation environment of the range hood is achieved.

Description

technical field [0001] The invention relates to the technical field of kitchen appliances, in particular to a hood. Background technique [0002] As a kitchen appliance with a high frequency of use in the kitchen, the performance of the hood directly affects the user's operating environment, especially the noise problem. The noise of the hood mainly includes steady-state working noise and operational interactive sound effects (such as switching on and off, shifting up and down), and the steady-state working noise is the main source of the hood noise. [0003] The inventor of the present application has found in the long-term research and development that currently, for the noise problem of the hood, the overall level of the sound power to reduce the noise is generally used as the noise reduction target. Or sound through the speakers for active noise cancellation. However, the above methods cannot improve other indicators of sound quality, such as characteristic loudness ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 陈千一王政钦乔扬程杰锋张肃
Owner GUANGDONG MIDEA WHITE HOME APPLIANCE TECH INNOVATION CENT CO LTD