Coanda effect flow amplifier and aeraulic device comprising such a flow amplifier

Abstract

The invention relates to a Coanda effect flow amplifier (10) for bringing about an amplified gas flow, having: - a main air circulation duct (14), - at least one injection orifice opening into the main duct (14), - a plurality of orifices for feeding compressed driving gas, each being configured to be connected to a source of compressed driving gas in order to feed said at least one injection orifice with compressed driving gas, - at least one distribution duct connecting said plurality of feed orifices to said at least one injection orifice, - an amplification profile (48) at least partially delimiting said at least one injection orifice and forming a convex surface configured to bring about a Coanda effect in a flow of compressed driving gas injected through said at least one injection orifice.