Patent ID: 6042458
Filing Date: 2000-03-28
Classification: B24C

Abstract:
An entrained particle flow turning device to change the direction of a fluid flow containing entrained particles, said entrained particle flow turning device comprising:an inlet;an outlet;a first internal passageway extending in a downstream direction from said inlet, said first internal passageway being defined by at least one first sidewall and an end wall;a second internal passageway extending in an upstream direction from said outlet, said second internal passageway being defined by at least one second sidewall;said second internal passageway being in fluid communication with said first internal passageway at a turn through an opening formed in at least on of said end wall and said at least one first sidewall, said second internal passageway being disposed at an angle to said first internal passageway, said second internal passageway including a bellmouth entrance adjacent said opening;means disposed adjacent said turn for preventing significant particle-to-particle impacts and particle to wall impacts as the entrained particle flow flows from said first internal passageway to said second internal passageway, said means comprising a diffusion pocket disposed adjacent said turnwhereby the direction of flow of said entrained particle flow is turned in said turn without significant reduction in size and mass of said entrained particles and without significant erosion of said entrained flow turning device adjacent said turn.