Hot gas ventilator, particularly for recirculation of high gas flow in heat treatment plants with heat transfer on heat treatment materials by highly forced convection, has rotor with two impellers for two pressure ranges

摘要

The hot gas ventilator has a rotor with two impellers for two pressure ranges that are connected one after another, where the impellers are rotated on a shaft (1). The impellers are formed as radial ventilators. The former impeller has a large diameter than the latter impeller. The former impeller sucks the conveyed gas volume flow from a suction chamber.