Variable induction apparatus with a primary fluid flow controlled induction damper

摘要

A primary fluid nozzle induces secondary fluid flow through an induction port opening. A damper valve element is provided at the induction port and is constantly biased open. A variable flow fluid inlet is positioned to one side of the nozzle orifice and arranged to direct fluid against the induction port damper tending to close the damper depending upon the flow of fluid through the variable flow fluid inlet. Thus, when primary fluid flow increases through the variable flow inlet, the secondary fluid damper tends to be closed, reducing secondary fluid flow.