ORIFICE APPARATUS USED FOR CONTROLLING FLUID

摘要

PURPOSE: An orifice apparatus used for controlling fluid is provided to stabilize exhaust pressure, by preventing a venturi phenomenon generated in an outflow part to make the pressure of an input flow part and the outflow part uniform. CONSTITUTION: A gear(14) is driven by a motor(12). A doughnut-type orifice(18) has a penetration hole(19) in which fluid flows, operated by the gear. The doughnut-type orifice includes an inflow part, an intermediate part and an outflow part, and is curved to minimize resistance of the fluid from the inflow part to the outflow part. Exhaust pressure is stabilized by eliminating a venturi phenomenon generated in the outflow part.