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range hood

A range hood and housing technology, which is applied in the direction of removing oil fume, household stove/stove, heating method, etc., can solve the problems of poor noise reduction effect and complex structure of noise reduction components, so as to solve the complex structure, improve the noise environment, reduce The effect of passing

Active Publication Date: 2021-03-05
QINGDAO HAIER SMART TECH R & D CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a range hood, which aims to solve the problems of complex structure and poor noise reduction effect of the noise reduction component of the existing range hood

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1-8 As shown, a range hood is provided according to the embodiment of the present invention, which includes a body 11, a case 12 disposed on the body 11, and a volute 13 disposed in the case 12, and a plurality of air outlets of the volute 13 are provided Noise reducer 2, a plurality of noise reducers 2 are stacked at the air outlet, each noise reducer 2 includes a closed shell arranged in the air outlet, and the shell is a hollow structure;

[0031] Among them, the plurality of noise reducers 2 at least include a first noise reducer 21 and a second noise reducer 22, and the first housing of the first noise reducer 21 is provided with a plurality of The first silencing cavities 211 arranged in sequence and separated from each other, each first silencing cavity 211 has a first through hole 23 communicating with the air outlet of the volute 13; each first silencing cavity 211 passes through one or more The diaphragm 26 arranged at intervals along the dire...

Embodiment 2

[0056] Such as Figure 1-3 As shown, a range hood is provided according to the embodiment of the present invention, which includes a body 11, a case 12 disposed on the body 11, and a volute 13 disposed in the case 12, and a plurality of air outlets of the volute 13 are provided Noise reducer 2, a plurality of noise reducers 2 are stacked at the air outlet, each noise reducer 2 includes a closed shell arranged in the air outlet, and the shell is a hollow structure;

[0057] Among them, the plurality of noise reducers 2 include one or more first noise reducers 21, and the first housing of the first noise reducer 21 is provided with a plurality of mutual Separated first muffler cavity 211, each first muffler cavity 211 has a first through hole 23 communicating with the air outlet of the volute 13; each first muffler cavity 211 is away from the first through hole through one or more edges The transverse diaphragm 26 arranged at intervals in the direction of 23 is divided into two...

Embodiment 3

[0067] Such as Figure 1-3 As shown, a range hood is provided according to the embodiment of the present invention, which includes a body 11, a case 12 disposed on the body 11, and a volute 13 disposed in the case 12, and a plurality of air outlets of the volute 13 are arranged Noise reducer 2, a plurality of noise reducers 2 are stacked at the air outlet, each noise reducer 2 includes a closed shell arranged in the air outlet, and the shell is a hollow structure;

[0068] Among them, the plurality of noise reducers 2 include one or more second noise reducers 22; the second housing of the second noise reducer 22 is provided with a plurality of mutually arranged in sequence along the inner peripheral wall direction of the second housing. Separated second muffler chambers 221 , each second muffler chamber 221 has a through hole 25 communicating with the air outlet of the volute 13 .

[0069] Optionally, multiple second noise reducers 22 are stacked at the air outlet of the volute...

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Abstract

The invention discloses a range hood and belongs to the technical field of range hoods. The range hood comprises a body, a housing arranged on the body and a volute arranged in the housing. Multiple noise reduction devices are arranged at an air outlet of the volute and are stacked at the air outlet. The multiple noise reduction devices at least comprise one first noise reduction device and one second noise reduction device. A first shell of the first noise reduction device is provided with multiple noise eliminating cavities, and the first noise eliminating cavities are provided with first through holes communicating with the air outlet. Each first noise eliminating cavity is divided into two or more noise eliminating auxiliary cavities through one or more transverse partition plates, andeach first transverse partition plate is provided with a second through hole communicating with the adjacent noise eliminating auxiliary cavities. A second shell of the second noise reduction deviceis provided with multiple second noise eliminating cavities, and the second noise eliminating cavities are provided with through holes communicating with the air outlet of the volute. The range hood solves the problems that the structure of a noise reduction assembly of the range hood is complex, and the noise reduction effect is poor.

Description

technical field [0001] The invention relates to the technical field of range hoods, in particular to a range hood. Background technique [0002] With the continuous improvement of people's living standards, the range hood has become an indispensable household appliance in the kitchen, but the range hood often produces huge noise when the fan rotates during use. For example, for the centrifugal fan, the main Aerodynamic noise such as rotating noise and eddy current noise will be generated. The rotating noise is caused by the interaction between the asymmetric structure around the impeller blade and the circumferential uneven flow field formed by the blade rotation. When passing through the blade, a turbulent boundary layer and vortex and vortex split and separate, resulting in eddy noise caused by pressure pulsation on the blade. Regardless of the type of noise mentioned above, it will hinder people's communication and language exchanges in production, affect the organizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 闫茂松范强项红荧赵海霞孙兴朋
Owner QINGDAO HAIER SMART TECH R & D CO LTD