专注通风管道加工·排烟罩

　　With the development of society, many kitchens in family residences emit fumes from their windows, which leads to cooking downstairs and smoking upstairs. Therefore, when family decoration, kitchen flue decoration is very important. Once unreasonable, it will form a bad taste phenomenon, which will have an impact on home life.

　　1)通风管道

　　1) Ventilation Pipeline

　　通风管道本体、结构、固定资料、密封资料及柔性接头有必要选用不燃资料制造。当吊顶内有可燃物时，吊顶内的通风管道应选用不焚烧资料进行隔热，并应与可燃物坚持不小于150mm的间隔。

　　The main body, structure, fixed data, sealing data and flexible joints of ventilation pipelines need to be manufactured with non-combustible data. When there are combustibles in the ceiling, the ventilation pipes in the ceiling should be insulated by non-incineration data, and should be not less than 150 mm apart from the combustibles.

　　2)正压送风管道

　　2) Positive Pressure Air Supply Pipeline

　　送风管道应选用不焚烧资料制造，当选用金属风道时，管道风速不该大于20m/s;当选用内外表光滑的混凝土等非金属资料风道时，不该大于15m/s.

　　The air supply pipeline should be manufactured with non-incineration data. When the metal duct is selected, the wind speed of the pipeline should not be greater than 20m/s, and when the non-metallic material duct such as smooth concrete with inner and outer surfaces is selected, it should not be greater than 15m/s.

　　山东通风管道

　　Shandong Ventilation Pipeline

　　当加压送风管穿越有火灾可能的区域时，风管的耐火极限应不小于1h.送风井道应选用耐火极限不小于lh的隔墙与相邻部位分隔，当墙上有必要设置检修门时应选用丙级防火门。

　　When the pressurized air duct passes through the area where fire is possible, the fire resistance limit of the air duct should not be less than 1h. The partition wall with fire resistance limit not less than LH should be selected for the air duct and the adjacent parts should be separated. When it is necessary to install an overhaul door on the wall, the third-class fire door should be selected.

　　3)通风空调

　　3) Ventilation and air conditioning

　　通风空调体系的管道等应选用不燃资料制造。

　　Ventilation and air conditioning system pipes should be manufactured with non-combustible materials.

　　山东通风管道触摸腐蚀性介质的风管和柔性接头，可选用难燃资料制造。复合资料风管的覆面资料有必要为不燃资料，山东通风管道的绝热资料应为不燃或难燃B1级，且对人体无害的资料。

　　Shandong ventilation duct touches the air duct and flexible joint of corrosive medium, and can be manufactured with non-flammable materials. It is necessary for the cover data of composite data duct to be non-flammable. The insulation data of Shandong ventilation duct should be non-flammable or non-flammable grade B1 and harmless to human body.

　　关于通风管道的制造和装置有什么要求?

　　What are the requirements for the manufacture and installation of ventilation ducts?

　　1)风管水平装置，其直径或长边尺度小于400mm时，距离不该大于4m;大于或等于400mm时，距离不该小于3m;

　　1) The distance should not be greater than 4 m when the diameter or length of the horizontal device is less than 400 mm, or less than 3 m when the diameter or length of the horizontal device is greater than or equal to 400 mm.

　　2)风管笔直装置，距离不该大于4m，但每根立管的固定件不该少于2个。

　　2) The air duct should be straight, and the distance should not be greater than 4m, but the fixed parts of each riser should not be less than 2.

　　2.机械防排烟体系的矩形风道的接缝应选用咬口方式，接缝处须坚持密封。

　　2. The joint of rectangular air duct of mechanical smoke control and exhaust system should be sealed by biting method.

　　3.送风、通风管道的单位面积答应漏风量应契合《通风与空调工程施工质量检验标准》GB50243中的规则。送风管道答应漏风量应根据工作压力断定;通风管道均按中压体系的规则。

　　3. The allowable air leakage per unit area of air supply and ventilation pipes should conform to the rules of "Quality Inspection Standard for Ventilation and Air Conditioning Engineering Construction" GB5024 3. The air leakage allowed by the air supply pipeline should be determined according to the working pressure, and the ventilation pipeline should be determined according to the rules of medium pressure system.