| 摘要 |
PROBLEM TO BE SOLVED: To start up a coating booth equipped with a gas supply means in a well balance state of gas supply and discharge within an extremely short period at the time of starting operation even if the pressure loss of a gas discharge system is significantly fluctuated. SOLUTION: After a gas supplying blower (8) and a gas discharging blower (10) are started at respective rotation speeds at which the balance between gas supply and discharge is stabilized at the time of immediately before the stopping the operation last time, the blow quantity of the discharge gas is detected (STP 2): whether or not the blow quantity of the discharged gas is within an allowable range is judged (STP 3): when it is detected within the allowable range, control is shifted to a feedback control and when it is judged to be out of the allowable range, a proper rotation speed so as to obtain a proper blow amount of the discharged gas is calculated by computation processing (STP 4) on the based of the particular characteristics of the gas discharging blower (10) and the rotation speed and the detected blow quantity of the discharged gas of the gas discharging blower (10): and after the gas discharging blower (10) is operated at the proper rotation speed (STP 5), the control is shifted to the feedback control (STP 6).
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