What is a centrifugal fan housing commonly referred to as?

What is a centrifugal fan housing commonly referred to as?

• A. Blower casing
• B. Scroll
• C. Fan shroud
• D. Impeller casing

Answer: (B)

The term "scroll" is commonly used to refer to the shape and design of the housing in a centrifugal fan. This housing features a spiraled or curved form that directs the airflow from the impeller. As air is drawn into the fan, it moves into the scroll, where the kinetic energy from the rotation of the impeller is transformed into pressure energy. This configuration ensures efficient airflow management and increases the fan's performance, as the scroll helps to minimize turbulence and losses in the air stream. In centrifugal fans, the design of the scroll is crucial for optimal performance and efficiency. It plays a significant role in converting the velocity of the air produced by the impeller into a higher pressure, which is essential for pushing air through duct systems or across specific applications. This is why referring to the housing as a "scroll" is accurate and applicable in describing its function and design within centrifugal fan systems.

The term "scroll" is commonly used to refer to the shape and design of the housing in a centrifugal fan. This housing features a spiraled or curved form that directs the airflow from the impeller. As air is drawn into the fan, it moves into the scroll, where the kinetic energy from the rotation of the impeller is transformed into pressure energy. This configuration ensures efficient airflow management and increases the fan's performance, as the scroll helps to minimize turbulence and losses in the air stream.

In centrifugal fans, the design of the scroll is crucial for optimal performance and efficiency. It plays a significant role in converting the velocity of the air produced by the impeller into a higher pressure, which is essential for pushing air through duct systems or across specific applications. This is why referring to the housing as a "scroll" is accurate and applicable in describing its function and design within centrifugal fan systems.