EP 3842641 B1 20231122 - SCREW COMPRESSOR
Title (en)
SCREW COMPRESSOR
Title (de)
SCHRAUBENVERDICHTER
Title (fr)
COMPRESSEUR À VIS
Publication
Application
Priority
JP 2018031152 W 20180823
Abstract (en)
[origin: EP3842641A1] A screw compressor includes: a casing that forms an outer shell of the screw compressor; a screw shaft provided in the casing and provided to be rotated by driving; a screw rotor fixed to the screw shaft and having spiral tooth grooves formed in an outer circumferential surface of the screw rotor; a gate rotor having a plurality of gate-rotor teeth that fit in the spiral tooth grooves of the screw rotor, the gate rotor defining together with the casing and the screw rotor, a compression chamber; a slide valve provided in a slide groove formed in an inner cylindrical surface of the casing, and also provided slidable in a direction along a rotation axis of the screw rotor; and a bearing housing including an internal bearing that supports one end portion of the screw shaft in such a manner as to allow the end portion of the screw shaft to be rotated. A raised surface portion is formed at an outer circumferential surface of the bearing housing and protrudes toward a slide surface of the slide valve.
IPC 8 full level
F04C 18/52 (2006.01); F04C 28/12 (2006.01)
CPC (source: EP)
F04C 18/52 (2013.01); F04C 28/12 (2013.01); F04C 2230/21 (2013.01); F04C 2240/30 (2013.01); F04C 2240/40 (2013.01); F04C 2240/50 (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 3842641 A1 20210630; EP 3842641 A4 20210714; EP 3842641 B1 20231122; WO 2020039548 A1 20200227
DOCDB simple family (application)
EP 18930891 A 20180823; JP 2018031152 W 20180823