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
Figure 1.97 Typical belt driven mixed flow fan |
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