EP 3425202 A4 20190109 - SCREW COMPRESSOR AND REFRIGERATION CYCLE DEVICE
Title (en)
SCREW COMPRESSOR AND REFRIGERATION CYCLE DEVICE
Title (de)
SCHRAUBENVERDICHTER UND KÜHLZYKLUSVORRICHTUNG
Title (fr)
COMPRESSEUR À VIS ET DISPOSITIF À CYCLE DE RÉFRIGÉRATION
Publication
Application
Priority
JP 2016056265 W 20160301
Abstract (en)
[origin: EP3425202A1] A screw compressor according to an embodiment of the present invention includes an electric motor an rotation speed of which can be changed, a screw rotor including a plurality of screw grooves on an outer circumferential surface, a screw shaft to transmit a driving force of the electric motor to the screw rotor and rotate the screw rotor, a first gate rotor and a second gate rotor respectively disposed on both sides of the screw rotor point-symmetrically with respect to the screw shaft and including, in outer circumferential portions, a plurality of teeth meshed with the screw grooves, a casing having a cylindrical shape to house the screw rotor inside a cylinder, a bypass device to cause a first compression chamber, which is a space surrounded by the first gate rotor, the screw groove, and the casing, and a low-pressure chamber having a suction pressure atmosphere to communicate, and an economizer port provided in the casing to cause fluid flowing from an outside to flow into the first compression chamber.
IPC 8 full level
F04C 18/52 (2006.01); F25B 1/047 (2006.01)
CPC (source: EP)
F04C 18/52 (2013.01); F04C 29/0014 (2013.01); F25B 1/047 (2013.01); F04C 28/08 (2013.01); F04C 28/12 (2013.01)
Citation (search report)
- [E] WO 2016046908 A1 20160331 - MITSUBISHI ELECTRIC CORP [JP]
- [Y] GB 2528214 A 20160113 - MITSUBISHI ELECTRIC CORP [JP]
- [Y] WO 2014192898 A1 20141204 - MITSUBISHI ELECTRIC CORP [JP]
- [Y] EP 2410182 A1 20120125 - DAIKIN IND LTD [JP]
- See also references of WO 2017149659A1
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)
EP 3425202 A1 20190109; EP 3425202 A4 20190109; EP 3425202 B1 20240619; JP 6685379 B2 20200422; JP WO2017149659 A1 20180920; WO 2017149659 A1 20170908
DOCDB simple family (application)
EP 16892504 A 20160301; JP 2016056265 W 20160301; JP 2018502908 A 20160301