OPTICAL PYROMETER Russian patent published in 2001 - IPC

FIELD: thermal physics. SUBSTANCE: optical pyrometer has outer body with deflector and ring vortex space between them connected with outlet to circular slit of blow over of lens and ring groove for release of pollutants. Ring vortex space is linked across inlet to tangential duct supplying cooling air made along tangent to ring groove for release of pollutants. Vortex space is connected to circular slit of blow over of lens through slit of variable height made in inner diameter of outer body. There is no slit over section of inlet of tangential duct to ring space. EFFECT: enhanced functional reliability of optical pyrometer. 3 dwg