EP 3507496 A1 20190710 - DRY-COMPRESSING VACUUM PUMP
Title (en)
DRY-COMPRESSING VACUUM PUMP
Title (de)
TROCKENVERDICHTENDE VAKUUMPUMPE
Title (fr)
POMPE À VIDE À COMPRESSION SÈCHE
Publication
Application
Priority
- DE 202016005208 U 20160830
- EP 2017070626 W 20170814
Abstract (en)
[origin: CA3034112A1] A dry-compressing vacuum pump, in particular a screw pump, has two rotor elements (14) which are arranged in a pump chamber (12) and which are each carried by a rotor shaft (22). Two shaft ends of the rotor shafts (22) project through a side wall (28) of the pump housing (10). On the two shaft ends (28) there is arranged in each case one toothed belt pulley (38). Furthermore, a drive device and an electric motor for driving the rotor shaft (22) are provided. According to the invention, the rotor shafts (22) are driven by means of a toothed belt (40). To be able to use a toothed belt for drive purposes, a rotational flank clearance between the two rotor elements (14) of greater than ±0.75°, in particular greater than ±1°, is provided.
IPC 8 full level
F04C 18/08 (2006.01); F04C 18/16 (2006.01); F04C 25/02 (2006.01)
CPC (source: EP KR US)
F04C 18/084 (2013.01 - EP KR US); F04C 18/126 (2013.01 - US); F04C 18/16 (2013.01 - EP KR US); F04C 25/02 (2013.01 - EP KR US); F04C 29/005 (2013.01 - KR); F04C 29/0071 (2013.01 - US); F04C 29/005 (2013.01 - US); F04C 2210/1005 (2013.01 - KR); F04C 2210/221 (2013.01 - KR); F04C 2220/12 (2013.01 - EP KR US); F04C 2230/602 (2013.01 - EP KR US); F04C 2240/20 (2013.01 - US); F04C 2240/50 (2013.01 - KR); F04C 2240/80 (2013.01 - US); F05B 2210/12 (2013.01 - KR); F05B 2210/16 (2013.01 - KR); F05B 2240/50 (2013.01 - KR US); F05B 2260/4021 (2013.01 - KR US)
Citation (search report)
See references of WO 2018041620A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 202016005208 U1 20171201; BR 112019002903 A2 20190521; CA 3034112 A1 20180308; CN 109642574 A 20190416; CN 109642574 B 20200804; EP 3507496 A1 20190710; EP 3507496 B1 20200715; JP 2019526738 A 20190919; KR 20190043139 A 20190425; US 2019186493 A1 20190620; WO 2018041620 A1 20180308
DOCDB simple family (application)
DE 202016005208 U 20160830; BR 112019002903 A 20170814; CA 3034112 A 20170814; CN 201780052596 A 20170814; EP 17751770 A 20170814; EP 2017070626 W 20170814; JP 2019511755 A 20170814; KR 20197006039 A 20170814; US 201716328581 A 20170814