| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for negative pressure monitoring dust collection in negative-pressure construction divisions to prevent outward leakage of harmful substances. <P>SOLUTION: The apparatus for negative pressure monitoring dust collection includes a ventilation dust collection mechanism 6 connected to a negative-pressure construction division 4 whose pressure is to be made negative and making the pressure in the division negative through ventilation dust collection comprising sucking air in the division, removing dust in the air and exhausting the air to the exterior, an air pressure detecting mechanism 23 detecting the internal pressure of the negative-pressure construction division 4 and a controller 15 controlling operation of the ventilation dust collection mechanism. The ventilation dust collection mechanism 6 has the first and second ventilation dust collection devices 7 and 8. In a state where the internal pressure of the negative-pressure construction division is made negative by the first ventilation dust collection device, the negative pressure in the negative-pressure construction division changes so as to approach the positive pressure of the exterior of the negative-pressure construction division. When a deviation of the negative pressure from a set negative value is detected by the air pressure detecting mechanism, the second ventilation dust collection device is operated for ventilation dust collection by the controller so as to keep negative the air pressure in the negative-pressure construction division. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
