General construction

The main elements of a true mixed flow fan are seen by refer­ence to Figures 1.97 and 1.98, similar to a vee belt driven vane axial or in-line radial. The major difference is in the impeller, which is generally of fabricated construction. Both the front shroud and backplate are at an angle, so that the air follows a

General construction

Figure 1.97 Typical belt driven mixed flow fan

General construction

Computer Matched

Designed blades guide vanes

Path somewhere between axial and centrifugal flow. It will be noted that the casing is just slightly larger than the impeller out­side diameter.

Posted in Fans Ventilation A Practical Guide

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