Noise reduction type range hood
A range hood and noise reduction technology, which is applied in the field of noise reduction range hoods, can solve the problems that noise reduction measures cannot be adjusted, cannot be adjusted steplessly, and poor user experience, etc., and achieve ideal noise reduction effects
Pending Publication Date: 2019-09-24
NINGBO FOTILE KITCHEN WARE CO LTD
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Problems solved by technology
Obviously, when the user uses different gears, the air volume and suction force produced are different, and the noise generated is also different. However, the noise reduction measures of the existing range hoods cannot be adjusted according to the change of the fan gear, let alone the noise of the fan. Adaptive stepless adjustment for different gears, the noise reduction effect is not intelligent enough, and the user experience is poor
Method used
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Embodiment Construction
[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0025] Such as Figure 1 to Figure 5 shown in figure 2 The direction indicated by the middle arrow A is the forward direction. The noise-reducing range hood in this embodiment includes a fan frame 1. A fan 2 is installed inside the fan frame 1. The front side of the fan 2 has a fan air inlet 21. The fan A fan cover 3 is installed on the front side of the frame 1, and a noise reduction device 4 is installed on the fan cover 3. A smoke collection hood 7 is installed below the fan frame 1 , and the smoke collection hood 7 has an air inlet connected to the air inlet 21 of the fan.
[0026] In this embodiment, the noise reduction device 4 includes a noise reduction orifice 41 , a front cover 42 and an air floating plate 43 . Among them, the noise reduction orifice 41 is a fixed plate installed on the fan cover 3, and there are many noise reduct...
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The invention discloses a noise reduction type range hood. The rang hood comprises a fan frame and a fan, wherein a fan cover plate is arranged on the front side of the fan frame; a noise reduction device is arranged on the fan cover plate; the noise reduction device comprises a noise reduction hole plate, a front cover plate and an air floating plate; noise reduction holes are formed in the noise reduction hole plate; the front cover plate is arranged on the front side of the noise reduction hole plate; a noise reduction cavity is formed between the noise reduction hole plate and the front cover plate; an air inlet channel is formed between the noise reduction hole plate and an air inlet of the fan; and the air floating plate is arranged in the air inlet channel and capable of driving the noise reduction hole plate and the front cover plate to do relative movement under the action of airflow in the air inlet channel so as to adjust the size of the noise reduction cavity. According to the range hood, the air floating plate arranged in the air inlet channel can drive the noise reduction hole plate and the front cover plate to do relative movement under the action of airflow so as to change the size of the noise reduction cavity, so that the resonance frequency of the noise reduction cavity is automatically matched with the wind noise frequency generated by different gears of the range hood, the self-adaptive stepless frequency conversion noise reduction of the range hood is achieved, and the noise reduction effect is ideal.
Description
technical field [0001] The invention relates to a range hood, in particular to a noise reduction type range hood. Background technique [0002] Chinese cooking will produce a lot of oily fumes. In order to keep the kitchen environment clean and the human body healthy, range hoods have become one of the essential equipment in modern home kitchens. During the operation of the range hood, the airflow movement produces turbulence and noise, which affects people's cooking experience and health. In order to reduce the noise of range hoods, people have invented various range hoods with noise-reducing structures, such as "A Silent Type" disclosed in the Chinese invention patent No. 201310627547. Range hood", the range hood is provided with a sound-absorbing hood at the position facing the forward air inlet of the volute, micro holes are arranged on the sound-absorbing hood, and the rear panel of the sound-absorbing hood facing the front air inlet is installed obliquely, The calibe...
Claims
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IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 袁柯铭
Owner NINGBO FOTILE KITCHEN WARE CO LTD