Constant air volume pneumatic valve, it is a kind of mechanical device themselves

constant pneumatic valve, is a kind of mechanical device on our own efforts, is suitable for the need constant ventilation and air conditioning system. Control does not need constant pneumatic valve air volume and the power, it relies on duct in the air force to locate the position of the pneumatic control valve, and within the scope of the pressure difference to keep air flow in the preset flow. Application in the fresh air system at present, in the domestic, fan coil plus fresh air system of air conditioning mode is more common, especially in the hotel guest room, most of the office building, office building in this way. Usually approach is to set a fresh air units on each floor, aisle equipped air and n2, each of the dozens of branch pipe from the main access in each room. In hotel rooms, for example, new air volume per room generally for m/h, how to do each branch airflow consistent? In general, designers tend to provide a volume adjustment in the fresh air pipe pneumatic valve, expected by late debugging means to complete the air distribution. Because fresh air systems in general are main long, short branch pipe, and the air volume adjustment pneumatic valve adjustment is neither straightforward, accuracy is not ideal, and the rooms only m/h, fresh air volume air volume is small, the debugging is almost can't do. Construction units can only do measure total fresh air main delivery, ensure the air supply pipe has the wind the point of this. In order to guarantee offered by each room of the new air volume can meet the design value, also need not construction unit to the balance of a room is a room, we only need in each air pipe set on a constant pneumatic valve, the above problem is solved. In the high-rise residential and office buildings were often embrace new wind force is insufficient, and designers tend to feel very grievance. Because look from the drawings, standard value of fresh air rate is not low, but we tend to overlook a problem, how to guarantee the actual effect, from the design Angle and air flow pneumatic valve application in the fresh air system, is an effective measures. Because of the constant air volume pneumatic valve is still mainly rely on imports, the price is more expensive, the author suggested in four, five-star hotel, high-grade office buildings use the more appropriate.