A center-hung smoke vent

By designing a center-hung smoke exhaust window, the window sash and frame are rotatably connected and driven by a motor. Combined with the setting of sealing strips and connecting profiles, the problem of insufficient opening angle of existing smoke exhaust windows is solved, achieving efficient opening and sealing effects and meeting fire safety requirements.

CN224379713UActive Publication Date: 2026-06-19CHINA RAILWAY CONSTRUCTION ENGINEERING GROUP +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY CONSTRUCTION ENGINEERING GROUP
Filing Date
2025-05-12
Publication Date
2026-06-19

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Abstract

This utility model belongs to the field of building curtain wall technology, specifically providing a center-hung smoke exhaust window, including a window frame installed on a wall or curtain wall. Its key feature is that it also includes multiple window sashes. The middle of the left and right sides of each window sash is rotatably connected to the sides of the window frame via a rotating shaft and driven by a motor. The multiple window sashes are arranged vertically along the window frame, and adjacent window sashes and the window sashes themselves are sealed together with sealing strips. This utility model, through the multiple window sashes and the rotatable connection of the middle of the window sashes to the window frame, ensures that the opening angle of the window sash is ≥85° and the effective opening area is ≥90%, meeting the fire safety requirement of full opening and truly achieving fire safety.
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