| 摘要 |
civil engineering, in particular, constructions of building windows and doors. SUBSTANCE: door with forced ventilation has hollow sections with a sealing between the built-up frame, device for control of the supplied outdoor air depending on the wind pressure. At least one swirler is installed in the front chamber of the built-up window-frame outside in the flow of outdoor air. The built-up frame is made at least with a single opening facing outside and at least with a single opening facing inside. EFFECT: provided sufficient ventilation of room even at operation of open furnace units and at operation of air exhausters. 10 cl, 3 dwg
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