麻豆国产视频風機可采用離心式或軸流麻豆国产视频風機(滿足280℃時連續工作30min的要求)，麻豆国产视频風機入口處應設置能自動關閉的麻豆国产视频防火閥，並聯鎖關閉麻豆国产视频風機。4.4.2麻豆国产视频風機宜設置在麻豆国产视频係統的頂部，煙氣出口宜朝上，並應高於加壓送風機的進風口，兩者垂直距離不應小於3m或水平距離不應小於10m。當係統中任一麻豆国产视频口或麻豆国产视频閥開啟時，麻豆国产视频風機應能自行啟動。
The smoke exhausting fan can adopt centrifugal or axial flow exhaust fan (meet the requirement of continuous working 30min at 280 degrees C). The smoke exhaust fan at the entrance of the exhaust fan should be set up automatically and interlock and close the exhaust fan. The 4.4.2 exhaust wind machine should be set at the top of the exhaust system. The flue gas exit should be upwards, and should be higher than the inlet air inlet of the pressure fan. The vertical distance should not be less than 3m or the horizontal distance should not be less than 10m. When a smoke vent or smoke valve is opened, smoke exhaust fans should be able to start automatically.
1.麻豆国产视频風機應設置在專用的風機房內或室外屋麵上，風機房應采用耐火極限不低於2.0h的隔牆和1.5h的樓板及防火門與其它部位隔開。當條件受到限製時，可設置在專用空間內，空間四周的圍護結構應采用耐火極限不低於1.0h的不燃燒體，風機兩側應有600mm以上的空間。當必須與其他風機合用機房時，應符合下列條件：
1. smoke exhausting fan should be set up in the special fan room or outdoor roof. The wind machine room should be separated from the wall of the fire-resistant limit not less than 2.0h and the floor of 1.5h and the first class fire door. When the condition is restricted, it can be set in the special space. The enclosure structure around the space should adopt the non combustion body with the fire resistance limit less than 1.0h, and the two sides of the fan should have more than 600mm space. When the engine room must be combined with other fans, the following conditions shall be met:
1）機房內應設有自動噴水滅火係統；
1) the automatic sprinkler system should be set up in the machine room.
2）機房內不得設有用於機械加壓送風的風機與麻豆视频官网；
2) no fan or pipeline for mechanical pressurized air supply can be installed in the engine room.
3）麻豆国产视频風機與麻豆国产视频麻豆视频官网上不得設有軟接管。
3) no soft nozzle should be installed on the exhaust fan and exhaust pipe.
室外麻豆国产视频風機
Outdoor exhaust fan
2.麻豆国产视频麻豆视频官网必須采用不燃材料製作，當采用金屬麻豆视频官网時，麻豆视频官网內風速不宜大於20m/s；當采用內表麵光滑的混凝土等非金屬材料麻豆视频官网時，不宜大於15m/s。4.4.5當吊頂內有可燃物時，吊頂內的麻豆国产视频麻豆视频官网應采用不燃燒材料進行隔熱，並應與可燃物保持不小於150mm的距離。
The 2. exhaust pipe must be made of non combustible materials. When metal pipes are used, the wind speed should not be greater than 20m/s, and it should not be greater than 15m/s when using the smooth concrete and other nonmetallic materials. 4.4.5 when there are combustible materials in the ceiling, the exhaust pipes in the ceiling should be insulated with non burning materials and should be kept at a distance not less than 150mm from the combustible materials.
3.當火災確認後，同一麻豆国产视频係統中著火防煙分區的麻豆国产视频口或自動麻豆国产视频閥應呈開啟狀態，其他防煙分區的麻豆国产视频閥或麻豆国产视频口應呈關閉狀態。
3. when the fire is confirmed, the smoke vent or the automatic exhaust valve should be open in the same exhaust system in the same exhaust system, and the smoke relief valve or exhaust port of other smoke prevention areas should be closed.
4.麻豆国产视频係統與通風、空氣調節係統宜分開設置。當合用時，應符合下列條件：
4. smoke exhaust system and ventilation and air conditioning system should be separately set. When used, the following conditions should be met:
1）係統的風口、風道、風機等應滿足麻豆国产视频係統的要求；
1) the draught, air duct and fan of the system should meet the requirements of smoke exhaust system.
2）當火災被確認後，應能開啟麻豆国产视频區域的麻豆国产视频口和麻豆国产视频風機，並在15s內自動關閉與麻豆国产视频無關的通風、空調係統。
2) when the fire is confirmed, the smoke vent and smoke exhaust fan in the smoke exhaust area can be opened, and the ventilation and air conditioning system which has nothing to do with the exhaust gas is automatically closed in the 15s.
5.麻豆国产视频井道應采用耐火極限不小於1h的隔牆與相鄰區域分隔；當牆上必須設置檢修門時，應采用丙級防火門；水平麻豆国产视频麻豆视频官网穿越防火牆時，應設麻豆国产视频防火閥；當穿越兩個及兩個以上防火分區或麻豆国产视频麻豆视频官网在走道的吊頂內時，其麻豆视频官网的耐火極限不應小於1h；麻豆国产视频麻豆视频官网不應穿越前室或樓梯間，如確有困難必須穿越時，其耐火極限不應小於2h。
The 5. exhaust well shall be separated from the adjacent area with a fire-resistant limit of not less than 1h, and a class C fire protection gate should be adopted when a door must be set up on the wall; when a horizontal exhaust pipe passes through a firewall, a fire relief valve should be set up; when crossing two and more than two fire zones or smoke pipes in the ceiling of the aisle The fire resistance limit should not be less than 1h; the exhaust pipe should not pass through the front room or stairwell. If the difficulty is necessary, the fire resistance limit should not be less than 2H.
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