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Axial-flow fan blade and air conditioner including the axial-flow fan blade

An axial flow fan and fan blade technology, which is applied to the components of the pumping device for elastic fluids, non-variable displacement pumps, machines/engines, etc. Advanced problems, to achieve the effect of reducing noise, improving the generation and shedding methods

Active Publication Date: 2016-03-02
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will not only increase the total noise of the axial fan blades, but also make the sound quality worse

Method used

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  • Axial-flow fan blade and air conditioner including the axial-flow fan blade
  • Axial-flow fan blade and air conditioner including the axial-flow fan blade
  • Axial-flow fan blade and air conditioner including the axial-flow fan blade

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Embodiment Construction

[0027] The present invention will be described in detail below with reference to the accompanying 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.

[0028] Such as figure 1 As shown, the present invention provides an axial fan blade, including a hub 20 and a plurality of blades 10 with the same structure axially arranged on the outer periphery of the hub 20, preferably, a plurality of blades 10 are evenly arranged on the outer periphery of the hub 20 superior. In the present invention, a groove 11 is provided on the suction surface 12 of the blade 10 near the leading edge. Preferably, the groove 11 is a long groove extending along the extending direction of the leading edge of the suction surface 12 of the blade 10 .

[0029] Such as figure 2 As shown, the A-A direction shows a circular arc drawn with the rotation center of the fan bla...

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Abstract

The invention provides an axial-flow fan and an air conditioner comprising the axial-flow fan. The axial-flow fan comprises a hub and a plurality of blades arranged at the periphery of the hub in the axial direction, the blades are same in structure, and grooves are formed in the positions, close to the front edges, of the suction surfaces of the blades. According to the axial-flow fan and the air conditioner, the grooves are formed in the positions, close to the front edges, of the suction surfaces of the blades to enable the structures of the suction surfaces of the blades to be adjusted, the airflow flowing modes of the suction surfaces are further changed, the vortex generation and shedding modes are improved, and the aim of lowering noise is finally achieved.

Description

technical field [0001] The invention relates to the technical field of axial flow fans, in particular to an axial flow fan blade and an air conditioner including the axial flow fan blade. Background technique [0002] Axial fan blades are important components in the outdoor unit of the air conditioner, and their noise performance will directly affect the overall performance of the air conditioner. Therefore, how to reduce the noise of the axial fan blades while ensuring the air volume has become a difficult problem in the field of air duct technology research. [0003] At present, during the operation of axial flow fan blades, vortex boundary layer separation often occurs on the surface of the suction surface of the blade leading edge, and vortex flow is generated at the same time. As the vortex falls off, corresponding vortex noise will be generated. This will not only increase the noise level of the axial fan blades, but also make the sound quality worse. Contents of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/38
Inventor 曹锋龙斌华刘中杰刘利娜
Owner GREE ELECTRIC APPLIANCES INC
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