Principle of power generation of air conditioner outdoor fan blades

Do axial-flow fan units affect the performance of outdoor air conditioners?

The target of this study is the axial-flow fan unit, which forms a component of the outdoor unit of air conditioners. A previous study showed that the axial-flow fan unit, consisting of an axial-flow fan and a shroud, has a significant effect on the overall performance of an outdoor unit.

How do axial-flow fan blades work?

The design of an axial-flow fan blade involves stacking several airfoils that can be differently designed for each spanwise section. However, the complex flow field around the fan blade, including circumferential and axial flows, presents challenges when applying the single airfoil theory.

Does the blade tip vortex dominate in the axial flow fan?

Based on the work of Jiang et al. (2006, 2007), the flow field and noise of axial flow fan in the air conditioner outdoor unit was investigated and it was demonstrated that the fan blade tip vortex dominates in the fan flow.

What is an axial flow fan?

Author to whom correspondence should be addressed. Axial-flow fans are widely used as cooling fans in the outdoor units of split-type air conditioners. The design of an axial-flow fan blade involves stacking several airfoils that can be differently designed for each spanwise section.

How does a blade affect fan performance?

At the midpoint of the blade, an interesting phenomenon is observed. Both the thrust and torque experience a distinct and consistent rise. This part of the blade appears to hold a more significant influence over the overall fan performance compared to other sections.

How does a fan work?

Fan: A device for moving air, which utilizes a power driven rotating impeller. A fan shall have at least one inlet and one outlet. A fan induces airflow by virtue of its blades; a blade moves air by generating a lift force when in motion through the air.