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Abstract:
In order to meet the requirement of alternating air flow direction
of fan, a new aerofoil of axial-flow fan blade-reversing symmetrical
aerofoil with double leading edges is presented in the paper. Using
optimal control theory we designed and constructed a new type axial-flew
fan, which can alternate the direction of ventilation by simply
reversing the rotation of motor. The experimental data of fan and other
flow parameters along the blade are shown in good agreement with the
calculated. Depending upon the condition in service, the axial-flow fan
with new aerofoil blades can drives the air in one or other direction
with same characteristic value so as the volume flow, pressure and
efficiency. The feature of the fan is its simple construction,
convenient adjustment and the good general characteristics of normal and
reverse ventilation.
Key words: 轴流式通风机 优化设计
Received
198908, received in revised form 199005
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