AIR FILTER Russian patent published in 1996 - IPC

FIELD: production of compressed air. SUBSTANCE: filter is comprised of a casing with jacket which has a pipe union for discharging hot flow of thermodynamically divided sucked-in atmospheric air, a rubber ring, contaminated air admission pipe in the form of a subsonic nozzle with curvilinear grooves connected with the jacket and casing walls, a clean-air discharge pipe disposed on casing cover and provided with a conical attachment with radial grooves, and a float-type condensate drain positioned in the conical bottom of the casing. The filter also has a circular chamber positioned concentrically with condensate drain on its external side, and conical holes in its lower part. These holes accommodate ball-type closing elements while the condensate drain has segment-shape hollows contacting with said balls. EFFECT: higher economy in production of dry compressed atmospheric air, and high reliability of filter under varying weather and climatic conditions of operation. 5 dwg