| 摘要 |
In the lead 2 between a blown air and/or suction generator 1 and the blown air and/or suction users 5.1, 5.2, 5.3, a pressure measuring device 7 is provided which provides signals to a subsequently connected control and regulation unit 8 via which the pressure in the lead 2 can be controlled to a preset value. The signals from device 7 may be continuously variable or a range determined by pressure switches. Alternatively, the consumed current of the generator may be sensed as representing the output pressure. Valves (11.1,11.2 Figs 3,4 not shown) may be used to determine suction or blowing. |
