EP 3499039 B1 20210331 - SCREW VACUUM PUMP
Title (en)
SCREW VACUUM PUMP
Title (de)
SCHRAUBENVAKUUMPUMPE
Title (fr)
POMPE À VIDE À VIS
Publication
Application
Priority
EP 17207576 A 20171215
Abstract (en)
[origin: JP2019113064A] To improve temperature situation of a screw-type vacuum pump.SOLUTION: A screw-type vacuum pump (10) has a housing (16), and two screw rotors (28, 30) disposed in the housing (16) in a state of being engaged with each other. The screw-type rotors repeatedly form a conveyance amount in which a process gas is enclosed to convey the same to a direction of an outlet (24) while interacting with the housing (16). The screw-type vacuum pump (10) has a motor (12), the motor is formed as a direct driving portion for one of the screw-type rotors (28), and an active fluid cooling portion is disposed for the screw-type rotors (28, 30) and the motor (12).SELECTED DRAWING: Figure 1
IPC 8 full level
F04C 18/16 (2006.01); F04C 25/02 (2006.01); F04C 29/04 (2006.01)
CPC (source: EP)
F04C 18/16 (2013.01); F04C 25/02 (2013.01); F04C 29/045 (2013.01); F04C 2240/403 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3499039 A1 20190619; EP 3499039 B1 20210331; JP 2019113064 A 20190711; JP 7221672 B2 20230214
DOCDB simple family (application)
EP 17207576 A 20171215; JP 2018232381 A 20181212