| 摘要 |
A vacuum producing device having an ejector means with a jet nozzle and a receiving nozzle downstream from it. At the outlet end of the receiving nozzle there is a receiving space for the fluid flowing through the receiving nozzle and an exit flow duct extends from it. The exit flow duct is provided with choke means for resetting or variably setting the fluid volumetric flow, leaving by way of the exit flow duct, in order to be able to affect the pressure obtaining in the receiving space.
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