CONTROLLED AIR-FLOW CONSTRICTOR Russian patent published in 1994 - IPC

FIELD: pneumatic control. SUBSTANCE: controlled air-flow constrictor has body with constricting unit and controlling rod coupled to constricting unit placed in body between inlet and outlet spaces. Constricting unit is manufactured in the form of hollow cylindrical plug with longitudinal and lateral ducts on generating surface communicating radial holes with space of plug. Radial holes can be arranged in one lateral plane of section of plug. Controlling rod should be provided with hole communicating space of plug with one of radial holes. Plug can be fabricated in the form of bundle of tubes connected with face end caps. EFFECT: reduced temperature difference with air-flow constriction. 3 cl, 8 dwg