FIELD: heating.
SUBSTANCE: ventilation system comprises influent and exhaust pipes correspondingly equipped with air deflector and air consumption regulator. Influent pipe consists of two sleeves connected between themselves with goffered casing. Valve is installed above upper sleeve; said valve is kinematically tied to lower sleeve by means of rod.
EFFECT: there is ensured natural air exchange in working area.
4 cl, 1 dwg
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SU1368056A1 |
