With the development of society, many families use their own windows to smoke in the kitchen, resulting in cooking downstairs and smoking upstairs. So when the family decorates, the kitchen chimney decorates appears very important, once appears unreasonable, will form the counter taste phenomenon, forms the influence to the family life.

　　1)通風(fēng)管

　　1) ventilation pipe

　　通風(fēng)管體、結(jié)構(gòu)、固定數(shù)據(jù)、密封數(shù)據(jù)、柔性接頭的制造需要選用不燃材料。當(dāng)?shù)蹴攦?nèi)有燃料時，吊頂內(nèi)的通風(fēng)管道應(yīng)采用非燃燒材料絕緣，并與燃料保持不小于150mm的距離。

　　Non combustible materials shall be selected for the manufacturing of ventilation pipe body, structure, fixed data, sealing data and flexible joint. When there is fuel in the ceiling, the ventilation pipe in the ceiling shall be insulated with non combustible materials and kept at a distance of not less than 150 mm from the fuel.

　　2)正壓送風(fēng)管道

　　2) positive pressure air supply pipe

　　供氣管道應(yīng)采用非焚燒材料。選用金屬風(fēng)道時，管道風(fēng)速不宜大于20m/s。選用內(nèi)表面光滑的混凝土等非金屬材料風(fēng)道時，應(yīng)不大于15m/s。

　　The gas supply pipeline shall be made of non incineration materials. When selecting metal air duct, the wind speed of the pipeline should not be greater than 20 m / s. When selecting the air duct of non-metallic materials such as concrete with smooth inner surface, it shall not be more than 15m / s.

　　增壓送風(fēng)管道通過可能發(fā)生火災(zāi)的區(qū)域時，送風(fēng)井的耐火極限應(yīng)不小于1h。送風(fēng)軸應(yīng)與相鄰部件分開，耐火極限不小于lh。

　　When the pressurized air supply pipe passes through the area where fire may occur, the fire resistance limit of the air supply shaft shall not be less than 1h. The air supply shaft shall be separated from the adjacent parts, and the fire resistance limit shall not be less than LH.

　　通風(fēng)和空調(diào)

　　Ventilation and air conditioning

　　通風(fēng)和空調(diào)系統(tǒng)應(yīng)采用不燃材料。

　　The ventilation and air conditioning system shall be made of incombustible materials.

　　山東通風(fēng)管道接觸腐蝕性介質(zhì)的風(fēng)道與柔性接頭，可采用耐火材料制成。復(fù)合數(shù)據(jù)風(fēng)道的覆蓋數(shù)據(jù)必須為不燃數(shù)據(jù)，山東風(fēng)道的絕熱數(shù)據(jù)必須為不燃或不燃B1級，且對人體無害。

　　The air duct and flexible joint of Shandong ventilation pipe contacting corrosive medium can be made of refractory. The coverage data of composite data air duct must be non combustible data, and the insulation data of Shandong air duct must be non combustible or non combustible Class B1, which is harmless to human body.

　　通風(fēng)管道加工的制造和安裝有什么要求?

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

　　1)風(fēng)管水平裝置直徑或長度小于400mm，距離不得大于4m;當(dāng)大于或等于400mm時，距離不得小于3m;

　　1) the diameter or length of air duct horizontal device shall be less than 400mm, and the distance shall not be greater than 4m; when it is greater than or equal to 400mm, the distance shall not be less than 3m;

　　2)氣管矯直裝置，距離不應(yīng)大于4m，但各立管的固定件不應(yīng)小于2個。

　　2) gas pipe straightening device, the distance shall not be more than 4m, but the fixed parts of each riser shall not be less than 2.

　　2. 機械防排煙系統(tǒng)矩形風(fēng)道接頭應(yīng)咬傷，并密封。

　　2. The joint of rectangular air duct of mechanical smoke control system shall be bitten and sealed.

　　3.送風(fēng)風(fēng)道單位面積應(yīng)按照《通風(fēng)空調(diào)工程施工質(zhì)量檢驗標(biāo)準(zhǔn)》GB50243的規(guī)定允許漏風(fēng)。供氣管道允許的漏風(fēng)量根據(jù)工作壓力確定;通風(fēng)管道符合中壓系統(tǒng)的規(guī)則。

　　3. The unit area of air supply duct shall be allowed to leak according to the provisions of GB50243 standard for construction quality inspection of ventilation and air conditioning engineering. The allowable air leakage of the air supply pipeline shall be determined according to the working pressure; the ventilation pipeline shall conform to the rules of the medium pressure system.