The residential smoke exhaust system consists of smoke exhaust, check valve, exhaust machinery and roof cover. Its main function is to concentrate the dirty air in the kitchen and bathroom on the roof through the vertical exhaust flue, so as to realize high-altitude emission and reduce the pollution of the indoor and outdoor environment of the house. The residential fire-proof smoke exhaust system is to install a fire valve on the smoke exhaust. Tested by the National Fixed Fire Extinguishing System and the Quality Supervision and Inspection Center of Refractory Components, the fire resistance limit of this device is 1.5h, which can effectively prevent smoke from invading the room, prevent the fire from spreading in high-rise residential buildings and ensure the safety of residential buildings. The system technology has been applied in a large number of practical projects, and it is a residential smoke exhaust duct with smoke crosstalk, odor crosstalk, fire prevention and safe and reliable performance. At present, a national patent has been applied, and the patent application number is 2010201154589.
The national patent "diversion non-return exhaust valve" (ZL02 123894.4) is a special fire valve for residential variable pressure exhaust pipeline. The products are made of metal materials, and all parts are treated with anti-corrosion, which is flexible to open and tight to close. Under the condition of fire resistance test, the air leakage per unit area is not more than1000m3/(h m2).
The national patent "Simple detachable check valve in kitchen and bathroom of residence" (ZL 2003201KLOC-0/0798.2) is a special fire valve for residential smoke exhaust duct. This product is characterized by detachable valve and convenient cleaning. When the pipeline temperature reaches 70℃, the fire valve will automatically close. The main components are made of stainless steel; The valve can be reset manually without changing the installation conditions.