首页>
外国专利>
the design method of ventilatsioonikanali, seinasisse ventilatsioonikanali by creation and construction method for the creation of ventilatsioonikanali lu0084biviigu
the design method of ventilatsioonikanali, seinasisse ventilatsioonikanali by creation and construction method for the creation of ventilatsioonikanali lu0084biviigu
展开▼
机译:通气的设计方法和通气的创建方法及通气的创建方法 u0084biviigu
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention relates to a ventilation duct construction. The ventilation duct construction comprises a ventilation duct which is passed through a through hole in a wall. The construction further comprises a shielding sheet structure comprising a first portion extending essentially in parallel with the ventilation duct, and a second portion extending essentially in parallel with the penetrated wall. The shielding sheet structure is arranged externally at least partially around the duct at such a distance that an air gap is formed between the shielding sheet structure and both the duct and the penetrated wall. The invention also relates to a method of providing a fire protectd penetration of a ventilation duct in a wall.
展开▼