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Centrifugal fan and air conditioner with the centrifugal fan

A centrifugal fan and air conditioner technology, which is applied in air conditioning systems, machines/engines, household appliances, etc., can solve the problems of centrifugal fan aerodynamic noise deterioration, and achieve the effect of eliminating the vortex of airflow and reducing noise

Active Publication Date: 2017-03-15
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a centrifugal fan and an air conditioner with the centrifugal fan, so as to solve the problem in the prior art that the suction surface A of the blade of the centrifugal fan is separated from the airflow and causes the aerodynamic noise of the centrifugal fan to deteriorate

Method used

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  • Centrifugal fan and air conditioner with the centrifugal fan
  • Centrifugal fan and air conditioner with the centrifugal fan
  • Centrifugal fan and air conditioner with the centrifugal fan

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Embodiment Construction

[0029] 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. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] Such as Figures 3 to 6 As shown, according to the embodiment of the present invention, a centrifugal fan is provided, and the centrifugal fan includes an impeller chassis 10 and blades 20 . The blade 20 includes an air supply channel for making the airflow flow from the windward side of the blade 20 to the leeward side of the blade 20 to supplement the negative pressure area of ​​the blade 20 .

[0031] Applying the technical solution of the present invention, the airflow is blown out centrifugally along the windward side of the blade, and by supplementing the airflow on the windward side (pressure side) to the negative pressure zone (the area where the airflow is separated) on the lee...

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PUM

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Abstract

A centrifugal fan, comprising: an impeller base (10); and blades (20), each blade comprising an air-compensation channel that allows airflow to flow from the upwind side of the blade (20) to the downwind side of the blade (20) so as to provide air-compensation to the negative pressure area of the blade (20). An air conditioner having said centrifugal fan is also disclosed. In the centrifugal fan, airflow is centrifugally blown outward along the upwind side of the blades, and the airflow on the upwind side is used to compensate the negative pressure area at the backwind side, said area being where airflow separation is created. This compensation reduces or eliminates negative pressure at the backwind side and further eliminates the airflow vortex created by air flow separation, thereby reducing the noise produced by the centrifugal fan.

Description

technical field [0001] The invention relates to the field of air conditioner production, in particular to a centrifugal fan and an air conditioner with the centrifugal fan. Background technique [0002] Centrifugal fan is the core component of heat exchange fan system commonly used in many products. It is widely used in various industries of industrial production, especially for air conditioning products. Centrifugal fan is one of the core components of important heat exchange fan system. However, in the field of air conditioning, the requirements for its design indicators are not only high requirements for ventilation efficiency, but also high requirements for noise experience. [0003] In the working process of the centrifugal fan of the prior art, such as figure 1 with figure 2 As shown, the impeller chassis 1 rotates, the airflow enters from the center of the impeller, and then blows out around the blade 2 (the thick arrow in the figure indicates the rotation directio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28F04D29/30F04D29/66F24F1/38F24F13/00
CPCF04D29/30F04D29/66
Inventor 彭勃熊军廖俊杰刘池
Owner GREE ELECTRIC APPLIANCES INC