Gas flow unit, for jet layer apparatus, comprises jet inlet wall, return flow wall, cylinder, and fluidizing chamber

摘要

A gas flow unit, for a jet layer apparatus, comprises a jet inlet wall (3) and an opposite return flow wall (4). The unit has a cylinder (5) located in the lower region of a fluidizing chamber (1), between the two walls, which can be rotated about its longitudinal axis. Turning the cylinder alters the effective cross-section of the opening for the inflowing fluidizing gas.