FIELD: metallurgy.
SUBSTANCE: invention relates to removal of products formed during welding, soldering or from other point sources of harmful substances' extraction, and can be used in welding, preferably, in constrained conditions. Technical result is improved sanitary-hygienic requirements during operation of welders in non-stationary objects, especially in constrained conditions.
EFFECT: technical result is achieved by ventilation system which includes fan, connected via control unit with installed sensors for measuring content of harmful substances and temperature in the area of breathing, and air duct with possibility of its shifting, at that control unit is configured to detect content of harmful substances and temperature and their analysis (comparison of concentration of harmful substances with maximum allowable concentration (MAC) and registered temperature with allowable one) and with option to execute the command of changing flow rate.
8 cl, 1 dwg
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