Range hood and fan assembly thereof

A technology of fan and range hood, which is applied in the field of range hoods and fan components, can solve problems such as noise at the air inlet of the volute, achieve the effects of reducing disturbance, having no effect on air volume and pressure, and reducing noise

Pending Publication Date: 2019-07-09
QINGDAO HAIER SMART TECH R & D CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a range hood fan assembly, which solves the technical problem of noise at the air inlet of the volute without affecting the effect of the range hood on removing the oil fume

Method used

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  • Range hood and fan assembly thereof
  • Range hood and fan assembly thereof
  • Range hood and fan assembly thereof

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Embodiment Construction

[0031] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] This embodiment proposes a range hood, such as figure 1 As shown, the range hood includes a casing 1 and a fan assembly located in the casing 1, and an air inlet (not marked in the figure) for introducing air outside the casing 1 into the inside of the casing 1 is opened on the bottom of the casing 1 , the air inlet is provided with an oil filter module 2, and the oil filter module 2 is used to filter out the oil in the air when the air outside the shell 1 is introduced into the shell 1. The fan assembly is used to generate air flow. The fan assembly includes a volute 3 and a centrifugal fan (not shown in the figure) located in the volute 3. An air inlet is opened on the side plate of the volute 3 in the axial direction of the centrifugal fan (in the figure unmarked), the top of the volute 3 is provided with an air outlet. The focus o...

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Abstract

The invention relates to a range hood and a fan assembly thereof; a noise reduction module is additionally arranged at an air inlet of a volute on the fan assembly, the noise reduction module is optimally designed, the noise reduction module can achieve the effects of smoothing air flow at the air inlet and reducing the turbulence intensity of the air flow at the air inlet, and the purpose of reducing noise of the range hood is achieved under the condition that the air volume and air pressure of the range hood are not affected. An annular grating of a noise reduction grating can reduce radialflow of air flow at the air inlet, a radiation grating can reduce circumferential flow of the air flow at the air inlet, and therefore the disturbance degree of the air flow is reduced. The air inletends of all the annular gratings are matched with the airflow velocity contour distribution at the air inlet, so that airflow with the same velocity can enter the annular gratings at the same time; the distribution direction of the annular grating is consistent with the airflow speed direction of the air inlet. On one hand, airflow disturbance can be reduced, noise is reduced, and on the other hand, the air volume and the air pressure are not affected.

Description

technical field [0001] The invention relates to the technical field of kitchen appliances, in particular to a range hood and a fan assembly thereof. Background technique [0002] The range hood is an important electrical appliance in the modern home kitchen. The smoking, smoke control effect and noise level of the range hood affect the user's experience with the product. Therefore, how to reduce the noise of the range hood is also a very important research direction. [0003] A range hood generally includes components such as a housing, a volute, a centrifugal fan, and an oil filter module. When the range hood is working, the noise generated by the high-speed rotation of the internal centrifugal fan is the main noise source of the range hood. In the prior art, the noise of the range hood is usually reduced by optimizing the structure of the centrifugal fan and the volute. However, the position of the air inlet of the volute is also an important source of noise. However, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 贺立军余锐生艾希顺贾晓芸董书娟苑善通
Owner QINGDAO HAIER SMART TECH R & D CO LTD
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