What is the relationship between the impeller of a centrifugal fan and its efficiency?

A centrifugal fan is just one type of fan. The significant increase in power output is largely due to the fan’s impeller. The impeller refers to the blades we typically see on a fan. Many people mistakenly believe that the fan’s efficiency improves because of its high rotational speed. While the rotational speed of a centrifugal fan does directly affect its operational efficiency, the impeller itself is an energy-saving measure that ensures the fan maintains the same power consumption while improving efficiency. What is the relationship between the impeller of a centrifugal fan and its operational efficiency?

• If the impeller diameter in a centrifugal fan is designed to be relatively large, then the model of such equipment must also be sufficiently large to achieve corresponding power improvements.
• The impact of the impeller on the operational efficiency of a fan is primarily manifested through two aspects: the size of the impeller diameter and the angle of the blades.
• As a critical component of a centrifugal fan, the impeller not only directly influences the operational efficiency of the equipment but also ensures that, during operation, improved efficiency is achieved alongside energy-saving benefits.
• The angle of the blades must also be considered: generally, if the designed angle is small, the power will be lower. Conversely, if the angle of the impeller blades is larger, the equipment’s power will increase.
• We can improve the equipment’s efficiency by modifying it.
• To achieve high efficiency in a centrifugal fan, the impeller must be of reliable quality, and its size determines the equipment’s airflow capacity. It can be said that the equipment’s operation relies on it.

The above is how the impeller affects the working efficiency of a centrifugal fan. I believe everyone understands that its actual working efficiency largely depends on the impeller. Therefore, I hope everyone can improve the fan’s impeller, which will have a very significant effect.