Fluid dispersal device

Abstract

A fluid dispersal device has a fluid inlet port, a nozzle, a fluid jet passage and an outlet throat provided in a housing and arranged from the upstream side thereof in order. The sidewalls defining the fluid jet passage are composed of deflection walls, turn walls and branch walls arranged in order from the upstream side thereof. The deflection walls are parallel walls symmetric with respect to the center line of said nozzle, each of the turn walls continues from the downstream end of each of the deflection walls and is formed into a rectangular concave wall, the distance between the opposed rectangular concave walls is larger than that between the deflection walls. The branch walls continue from the downstream ends of the turn walls and project in opposite directions. The outlet throat is defined by the oppositely projecting branch walls. The fluid jet jetted from the nozzle is rightward of leftward deflected due to the interaction between the fluid jet and the deflection walls. The deflection fluid jet is branched by the branch walls into two branch flows in accordance with the amount of deflection thereof. One branch flow is dispersed from the outlet throat while the other branch flow flows into one of the turn walls. The turn walls turn the branch flows and make them collide with the deflected fluid jet perpendicularly to push the deflected fluid jet in a direction opposite to the deflecting direction thereof. Thus, the fluid jet is periodically deflected and oscillated within the fluid jet passage and is dispersed from the outlet throat.