Noise Reduction Device, Range Hood Using the Noise Reduction Device, and Control Method
A range hood and noise reduction technology, which is applied in the field of noise reduction, can solve problems such as adjustment and inability to monitor the noise distribution of range hoods, and achieve good noise reduction effects
Active Publication Date: 2022-02-18
NINGBO FOTILE KITCHEN WARE CO LTD
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Problems solved by technology
[0006] With the above-mentioned noise reduction structure, the noise reduction of the cavity and small holes cannot be adjusted according to the frequency of the noise, and can only be aimed at a specific noise frequency
[0007] In addition, the existing range hoods with noise reduction function are usually unable to monitor the noise distribution inside the range hood, and perform noise reduction and sound absorption for the noise frequency and maximum sound power noise in the area.
Method used
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Embodiment Construction
[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.
[0034] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element must have a particular orientation, be constructed, and operate in a particular orientatio...
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The invention discloses a noise reduction device, which includes a wedge module, and the wedge module includes a wedge, and is characterized in that: the noise reduction device also includes a housing, and the housing includes a bottom plate and a The side plate, the bottom plate and the side plate form an open shell, the tip of the wedge faces away from the bottom plate, the side of the wedge facing the bottom plate forms a cavity together with the bottom plate and the side plate, At least one side plate is provided with a noise reduction hole at a position corresponding to the cavity, and the wedge can move linearly relative to the bottom plate to change the volume of the cavity. Also disclosed are a range hood applied with the noise reduction device and a control method of the range hood. Compared with the prior art, the present invention has the advantages that: the wedge module adopts wedges and variable cavities to form a two-stage noise reduction mode to effectively absorb noise.
Description
technical field [0001] The invention relates to the technical field of noise reduction, in particular to a noise reduction device, a range hood applied with the noise reduction device, and a control method for the range hood. Background technique [0002] Range hoods have become one of the indispensable kitchen appliances in modern families. The range hood uses the principle of fluid dynamics to work, sucks and exhausts the range hood through a centrifugal fan installed inside the range hood, and uses a filter to filter some grease particles. The centrifugal fan includes a volute, an impeller installed in the volute and a motor that drives the impeller to rotate. When the impeller rotates, a negative pressure suction is generated in the center of the fan, and the oil fume under the range hood is sucked into the fan, and after being accelerated by the fan, it is collected by the volute and guided out of the room. [0003] Range hood fan performance and channel characteristi...
Claims
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IPC IPC(8): F01N1/00F24C15/20
CPCF24C15/2021
Inventor 曹元梁雪斐陈瑞于克阳胡巧玲
Owner NINGBO FOTILE KITCHEN WARE CO LTD