Fireproof and movable transformation exhaust duct

• Main Author: SUN CHANGYI
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2016
• Subjects: BUILDING; FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS; FIXED CONSTRUCTIONS

The invention relates to a fireproof and movable transformation exhaust duct which mainly addresses the problems of unsmooth smoke evacuation in a flue upon too many users and fire diffusion to flue upon building fire caused by flue narrowness. A fireproof apparatus is arranged on a stop device, and a valve block is enclosed by the combination of a temperature sensitive element and a torsion spring, so that the exhaust duct is fireproof. A valve body or the valve block are provided with a transformation sheet, and then not in usage, the transformation sheet returns to position of the transformation sheet and does not take up the space of the flue, which helps to exhaust smoke. According to the invention, the exhaust duct has simple structure, and is suitable to all kinds of building exhaust ducts, and avoids large scale fire hazards in buildings. 本发明涉及种防火型移动式变压排气道。主要解决了烟道狭窄，用户多时烟道排烟不畅以及在楼宇火灾时火焰延烟道扩散的问题。通过在限位装置上设置防火装置，用热敏元件及扭转弹簧的组合封闭阀片的方式，实现了防火的功能，且在阀体或阀片上加装变压片的方式，在不使用时，变压片归位，不占用烟道空间，便于排烟，本发明结构简单，适用于各种类型的楼宇排风道