Exhaust fan which of several parts of it? 1. Filter: filter equipment according to customer needs, specifications and equipment unworthy belt filter. 2, motor: exhaust fan choices are Y series three-phase asynchronous motors, with high efficiency, good performance, low noise, small oscillations and other characteristics. 3, the fan: exhaust fan unit chosen package of imported brands, double inlet centrifugal fan with high residual pressure, air volume, smooth operation, exhaust fan and check through the whole dynamic equilibrium, that the power to reach the highest and and lowest noise. 4, layout and panel: selection of corrosion by the use of exhaust fan, distribution leadership, exhaust fan for easy field maintenance removable aluminum layout layout; stick cotton inner board custom muffler exhaust fan, plate or outer plate electrolytic plating zinc plate processing exhaust fan, the choice of the outer coating spray maintain buy exhaust fan, the oxide layer and the outer coating of electrolytic plates constitute double maintenance, high strength all layout, good noise performance; the smaller air volume unit can use two- steel panel layout. Exhaust fan flow should be required to increase airflow value of not less than 10% to 20% of the surplus amount. Pressurized smoke exhaust fan pressure value shall be the most unfavorable loop system to calculate and ensure the value of residual pressure in the stairwell 40 ~ 50Pa. The residual pressure value inside the front room, shared room, fire elevator room, refuge floors, etc. 25 ~ 30Pa. Fire exhaust fan should be consistent with the current standard JB / T10281-2001 "fire exhaust fan technical conditions." Fan exhaust system should be set separately. Exhaust fan should be in the same position or an upper layer of smoke region. Usually exhaust fan, exhaust fan Lanzhou, Sheng clean air-conditioning is provided by the Texas Air Conditioning Equipment Co., Ltd. Sheng-purification. Texas Air Conditioning Equipment Co., Ltd. Sheng-purification (www.dzhffj.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Sheng-purification into the brilliant air conditioning and you work for a better future!