| 摘要 |
#CMT# #/CMT# The vacuum producing device, with an ejector unit (13) including a jet nozzle (15) and a collecting nozzle (16), has a control valve (28) allocated to the jet nozzle on its inlet side (19) and which is additionally positionable and lockable in several intermediate positions (31) between the closed position (29) and the open position (30), opening differently sized flow cross sections. The control valve is steplessly positionable between the different positions. #CMT# : #/CMT# An independent claim is included for a valve unit for fluid control which constructed in modular fashion from several sub-assemblies, wherein at least one of the sub-assemblies is a vacuum producing device. #CMT#USE : #/CMT# Vacuum producing device in fluid control system, with intermediate opening positions. #CMT#ADVANTAGE : #/CMT# The pressure ratios in the suction zone can be adjusted according to requirement, and the device has a lower consumption of vacuum producing fluid compared with conventional vacuum producing devices. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a first exemplary embodiment of the vacuum producing device in longitudinal section, wherein the fluid passage through the jet nozzle and the fluid passage around the jet nozzle are blocked. 13 : ejector unit 15 : jet nozzle 16 : collecting nozzle 19 : inlet side of jet nozzle 28 : control valve 29 : closed position 30 : open position 31 : intermediate position. |
