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Active noise reduction device and range hood

An active noise reduction and noise reduction technology, applied in active noise control, oil fume removal, lighting and heating equipment, etc., can solve problems such as oil accumulation and affecting noise reduction effect

Pending Publication Date: 2021-12-17
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the active noise reduction device in the range hood in the prior art is prone to oil accumulation and affect the noise reduction effect, thereby providing an active noise reduction device and a range hood

Method used

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  • Active noise reduction device and range hood
  • Active noise reduction device and range hood
  • Active noise reduction device and range hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 - image 3 , the present embodiment provides an active noise reduction device, including: a housing 1, a dust collecting part and a noise reducing part.

[0046] The housing 1 is arranged in a square shape, with a housing chamber 2 inside the package, and an opening 3 is provided on one side of the housing chamber 2. The position of the opening 3 is not limited, and can be arranged on the top side or the bottom side of the housing 1. As a preferred embodiment, The opening 3 is arranged on the side wall of the housing chamber 2 , and at the same time, the opening 3 is arranged in a square shape, which is convenient for the subsequent installation and operation of the electrode plate 5 .

[0047] The dust collection part is set on the opening 3, including several electrode plates 5, the electrode plates 5 are connected to the external power supply through the power cord, after the power is turned on, the electrode plates 5 are charged with static electrici...

Embodiment 2

[0065] On the basis of Embodiment 1, in this embodiment, the electrode plate 5 is not completely a conductor, and its two sides are an adsorption surface and an insulating surface, wherein the adsorption surface is arranged as a conductor, which is suitable for adsorbing dirt particles on the surrounding side. It is an insulating surface, which is set as an insulator. In the closed state, the adsorption surface is set towards the outside of the opening 3, and the insulating surface is set towards the inside of the opening 3.

[0066] By being provided with an insulator on one side of the electrode plate 5, avoiding the adsorption of greasy dirt, so that the side adsorption surface of the greasy dirt is adhered on the electrode plate 5, and faces the outside of the opening 3 when in the closed state, so that the greasy dirt adhering to the electrode plate 5 It can fall to the outside of the housing 1 or into the oil holding chamber, avoiding entering the housing 1 and affecting ...

Embodiment 3

[0068] Such as Figure 4 - Figure 5 As shown, on the basis of Embodiment 1, in this embodiment, an outer pole plate 8 is provided outside the opening 3, and a number of sound passing holes are evenly arranged on it, and the setting of the sound passing holes can be used for collecting or The emitted sound waves pass through, and at the same time endow the particles or dust flowing through the sound hole with the same electrical properties as the outer plate 8 itself, and at the same time, the two sides of the electrode plates 5 have different electrical properties, so that each electrode plate 5 exists Single side for dust absorption. In this embodiment, the opposite sides of the electrode plate 5 and the outer electrode plate 8 are electrically opposite.

[0069] By setting the outer pole plate 8, the side of the electrode plate 5 facing the outside of the opening attracts dust and dirt with different charges, avoiding the side of the accommodating cavity from absorbing oi...

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Abstract

The invention provides an active noise reduction device and a range hood. The active noise reduction device comprises a shell, a dust collection piece, and a noise reduction piece, wherein the shell comprises an accommodating cavity, one side of the accommodating cavity is provided with an opening, the dust collection piece is arranged on the opening and comprises at least one electrode plate, the electrode plates are suitable for being connected with an external power supply and adsorbing peripheral dirt particles, and the noise reduction piece is arranged in the accommodating cavity and is suitable for collecting noise outside the shell along the opening or emitting sound waves for neutralizing the noise to the outside of the shell. The electrode plates are arranged on the opening, the electrode plates are electrified by being connected with an external power supply, the electrified electrode plates can adsorb fine particles such as lampblack and dust on the peripheral side through an electrostatic induction phenomenon, the fine particles are prevented from flying into the shell and adhering to the noise reduction piece, so that the surface of the noise reduction piece is kept clean, and the noise reduction effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of range hoods, in particular to an active noise reduction device and a range hood. Background technique [0002] With the improvement of people's living standards, people pay more and more attention to the environmental sanitation in the kitchen. Range hoods are widely used in the air cleaning work of the kitchen as an electrical appliance for dealing with kitchen greasy dirt. However, while the range hood absorbs the oil fume, it also produces a certain degree of noise due to its own structural problems. The current noise reduction of hoods is mainly to adjust the dynamic balance between air volume and noise, or to paste sound-absorbing and vibration-damping materials inside. In a more efficient way, active noise reduction mainly neutralizes the sound wave frequency of the noise by emitting sound waves from the speaker device. [0003] However, when the existing active noise reduction device used for hoo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20G10K11/178B03C3/08B03C3/47B03C3/68
CPCF24C15/20F24C15/2021G10K11/178B03C3/08B03C3/47B03C3/68G10K2210/10
Inventor 冯圆通许宁王宏蔡真清冯展翊温汉杰
Owner GREE ELECTRIC APPLIANCES INC
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