초록

An air ventilation or supply system includes a blower for generating a primary flow and an induction nozzle for inducing a secondary flow produced by entrainment of the primary flow. An inlet of the blower and an inlet for the induction nozzle are adjacent each other.

대표청구항 ▼

[ What is claimed is:] [1.] An air ventilation or air supply system comprising:an axial fan for producing a primary flow;a primary flow guide surrounding the axial fan; andan induction portion including an induction nozzle which surrounds and is spaced from the primary flow guide and extends downstr

[ What is claimed is:] [1.] An air ventilation or air supply system comprising:an axial fan for producing a primary flow;a primary flow guide surrounding the axial fan; andan induction portion including an induction nozzle which surrounds and is spaced from the primary flow guide and extends downstream of a downstream end of the primary flow guide to induce a secondary flow by entrainment by the primary flow on the outlet side of the primary flow guide,wherein the primary flow guide has an outlet with a diameter D.sub.0, the induction nozzle has an outlet with a diameter D.sub.1, the outlet of the induction nozzle is spaced from the outlet of the primary flow guide by a distance L in an axial direction of the primary flow guide, the primary flow has an expansion angle .alpha..sub.1 at the outlet of the primary flow guide, and the relationship EQU 0.5.ltoreq.D.sub.1 /[D.sub.0 +2L tan (.alpha..sub.1)].ltoreq.1.5 satisfied.