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Fan used for range hood and range hood with same

A technology for range hoods and blowers, which is applied to parts of pumping devices for elastic fluids, household appliances, and oil fume removal, etc. It can solve problems such as large aerodynamic noise, achieve low cost, improve performance, and reduce aerodynamic noise. Effect

Active Publication Date: 2015-03-25
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most traditional range hoods use a centrifugal fan, because the spiral volute of the centrifugal fan can generate a large wind pressure, however, the volute generates a large wind pressure and also produces a large aerodynamic noise

Method used

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  • Fan used for range hood and range hood with same
  • Fan used for range hood and range hood with same
  • Fan used for range hood and range hood with same

Examples

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Embodiment Construction

[0042] 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 designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0043] In describing the present invention, it should be understood that the terms "central", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must h...

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Abstract

The invention discloses a fan used for a range hood and a range hood with the fan. The fan comprises a volute and a volute tongue, wherein the volute comprises a front plate, a rear plate, a coaming and a volute flange, the front plate and the rear plate are arranged in parallel in the front-and-back direction, the coaming is connected between the front plate and the rear plate, an opening is formed in the top of the coaming, and the volute flange is connected to the top of the front plate, the top of the rear plate and the top of the coaming and provided with an air outlet communicated with the opening; the volute tongue is arranged close to the air outlet, a noise attenuation space is formed by the volute tongue and at least one of the front plate, the rear plate, the coaming and the volute flange together in a defined mode, and a plurality of through holes are formed in the volute tongue. According to the fan used for the range hood, air is compressed in the sound attenuation space by effectively using sound waves and rubs with the inner walls of the through holes in the volute tongue, and the noise energy is consumed, so that noise is lowered, and noise pollution is reduced.

Description

technical field [0001] The invention relates to the field of electrical appliances, in particular to a fan used for a range hood and a range hood with the same. Background technique [0002] Most traditional range hoods use a centrifugal fan, because the spiral volute of the centrifugal fan can generate a large wind pressure. However, the volute generates a large wind pressure and also produces a large aerodynamic noise. In the design of the centrifugal fan volute, the volute outlet part, that is, the volute tongue part, has a great influence on the aerodynamic noise. The unreasonable design of the volute tongue will cause aerodynamic vortex, thereby generating high-frequency aerodynamic noise. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a fan for range hoods with low aerodynamic noise. [0004] Another object of the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/66F24C15/20
CPCF04D29/422F04D29/4226F04D29/663F24C15/20
Inventor 蒋济武刘晓燕
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD
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