| 摘要 |
FIELD: ventilation.SUBSTANCE: cooling exhaust protective ventilation device includes an external housing rigidly attached on one axis to an internal housing, with that, edges of housings form a suction hole directed towards a near-wall gas jet flow from a gas-jet unit to a hole with a connection pipe in upper cover of the external housing, which attaches the cooling ventilation device to the system air pipeline, differs by the fact that walls of housings are hollow and have a partition wall inside them, which forms cavities interconnected between each other and have connection pipes in covers of housings for supply and discharge of cooling liquid in the cavity and at the same time for rigid connection of housings to each other.EFFECT: temperature drop of housing surface of cooling exhaust device at high-temperature treatment of materials and products using gas-flame and plasma equipment at sufficient completeness of collection of hazardous emissions.1 cl, 1 dwg |
