Forward Curved Centrifugal Fan Diagram

Forward blade backward blade and radial blade.

Forward curved centrifugal fan diagram.

Sometimes centrifugal fans are called radial flow type fans. Figure 1 centrifugal fan figure 2 axial fan each fan system has different types of wheels or impeller types. The graph below illustrates the optimum working area the volume flow is plotted along the x axis and the system pressure is plotted on the y axis. Generally centrifugal fans have three types of blade.

The characteristic curve of. Forward curve sometimes referred to as a squirrel cage fan forward curve fans are used in most residential and light commercial hvac equipment. Wheel types centrifugal fans may be classified into three basic types according to blade configuration. Typical centrifugal fan and covers the common terminology of these components.

Radial or straight blade each type has its own application range and limits. These fans are for low to medium static applications. The video below discusses small low pressure centrifugal fans which can move air quickly at a pressure between about 100 and 2 000 pascals. They are the most budget friendly and the least efficient blade design.

They are suitable for high pressure applications as compared with axial flow fans. A forward curved centrifugal fan works best when high pressures against lower volume flows are required.