DEVICE TO SWIRL AND CHANGE DIRECTION OF FLUID AND GAS FLOWS

摘要

FIELD: process engineering. ^ SUBSTANCE: invention relates to fluid and gas swirlers. Case represents a torus part with wavy multistart screw birecurvate surface provided with screw grooves inside and outside said case arranged at angle to its axis in the form of curved pockets with centers of curvature located outside and inside case cross-section. Case is made up of sections, each being made up of annular sector made from strip coiled to make different-size quadrangles with two parallel sides. Free sides of said quadrangles are interconnected to produce curved pockets varying in shape and size, bent in wavy manner along crease lines at angle to strip lengthwise edges. Distance between crease lines equal the sum of lengths of pocket inner and outer surface perimetres. ^ EFFECT: variable direction of fluid or gas flows, expanded performances. ^ 8 dwg