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Centrifugal volute, centrifugal fan and air conditioner having same

A technology of centrifugal blades and volutes, which is applied in the field of air conditioning equipment, can solve problems such as high noise of centrifugal fans, and achieve the effects of reducing turbulence, reducing noise, and reducing noise peaks

Active Publication Date: 2017-04-12
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a centrifugal volute, a centrifugal fan and an air conditioner with it, so as to solve the problem of high noise of the centrifugal fan in the prior art

Method used

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  • Centrifugal volute, centrifugal fan and air conditioner having same
  • Centrifugal volute, centrifugal fan and air conditioner having same
  • Centrifugal volute, centrifugal fan and air conditioner having same

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Embodiment Construction

[0023] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0024] Such as Figures 1 to 6 As shown, according to the embodiment of the present invention, the centrifugal volute includes a volute body and a volute tongue 30, the volute body and the volute tongue 30 form an air duct, the volute tongue 30 protrudes into the air duct, the volute tongue 30 has an outer edge, and the outer Along the line is formed by the point on the volute tongue 30 with the shortest distance from the wall facing the volute tongue 30, the outer line has a noise reduction section, and the starting point of the noise reduction section is located at two times the projected length of the outer edge line in the axial direction of the centrifugal fan 60. At one half, the distance betw...

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Abstract

The invention provides a centrifugal volute, a centrifugal fan with the same and an air conditioner. The centrifugal volute comprises a volute body and a volute tongue, wherein the volute body and the volute tongue form an air flue; the volute tongue is projected towards the inside of the air flue and is provided with an extension line; the extension line consists of a point on the volute tongue; the distance from the point to a wall surface which faces the volute tongue is the shortest; the extension line is provided with a noise reduction section; a starting point of the noise reduction section is positioned at a midpoint of the length of a projection of the extension line in the axis direction of a centrifugal fan; the distance from the noise reduction section to the axis of the centrifugal fan is gradually increased along the direction which is far away from the midpoint; and a minimum angle formed between the noise reduction section and the axis of the centrifugal blade is an acute angle. By the centrifugal volute, the noise peak can be reduced effectively, noises are reduced, and the using comfort level is improved.

Description

technical field [0001] The invention relates to the field of air conditioning equipment, in particular to a centrifugal volute, a centrifugal fan and an air conditioner with the same. Background technique [0002] The aerodynamic noise of the fan is caused by the unsteady flow during the gas flow. In the process of gas flow, the interaction between gas and gas, gas and objects generates noise. The aerodynamic noise of the fan is mainly composed of rotating noise and eddy current noise. [0003] The rotation noise of the fan is caused by the evenly distributed blades on the fan hitting the surrounding gas medium, causing the surrounding gas pressure to fluctuate. When the airflow flows through the blade, a boundary layer is formed on the surface of the blade. The boundary layer, also known as the boundary layer, refers to a layer of fluid attached to the solid surface when the low-viscosity fluid flows along the solid surface. The two sides of the fan blade are the suction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/66
CPCF04D29/422F04D29/663
Inventor 张伟捷熊军姚锋刘池
Owner GREE ELECTRIC APPLIANCES INC
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