Global Patent Index - EP 2479436 B1

EP 2479436 B1 20170628 - MULTISTAGE COMPRESSOR

Title (en)

MULTISTAGE COMPRESSOR

Title (de)

MEHRSTUFIGER KOMPRESSOR

Title (fr)

COMPRESSEUR MULTI-ÉTAGES

Publication

EP 2479436 B1 20170628 (EN)

Application

EP 10816825 A 20100716

Priority

  • JP 2009217571 A 20090918
  • JP 2010004620 W 20100716

Abstract (en)

[origin: EP2479436A1] There is provided a multistage compressor that causes lubricating oil separated from an intermediate-pressure refrigerant gas by an oil separation plate to interfere with a stator coil end regardless of the height of a balance weight in which an oil separation plate is provided. The multistage compressor includes an electric motor (4) provided in a sealed housing (10); a low stage-side compression mechanism (2) and a high stage-side compression mechanism (3) which are provided under and over the electric motor (4), respectively, with the electric motor (4) being held therebetween; a balance weight (70) that is formed by a lower segment (71) and an upper segment (72) and assures rotational balance of a rotation shafting including a rotating shaft (7); and an oil separation plate (73) that centrifugally separates lubricating oil (12) contained in the refrigerant gas sucked into the high stage-side compression mechanism (3). On one end side of a rotor (6), the oil separation plate (73) is fixed to the rotor 6 by being held between the lower segment (71) and the upper segment (72).

IPC 8 full level

F04C 23/00 (2006.01); F04C 18/02 (2006.01); F04C 18/356 (2006.01); F04C 29/00 (2006.01); F04C 29/02 (2006.01)

CPC (source: EP)

F04C 23/005 (2013.01); F04C 23/008 (2013.01); F04C 29/0085 (2013.01); F04C 29/026 (2013.01); F04C 18/0215 (2013.01); F04C 18/356 (2013.01); F04C 2240/807 (2013.01)

Citation (examination)

None

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 SE SI SK SM TR

DOCDB simple family (publication)

EP 2479436 A1 20120725; EP 2479436 A4 20160224; EP 2479436 B1 20170628; JP 5427892 B2 20140226; JP WO2011033710 A1 20130207; WO 2011033710 A1 20110324

DOCDB simple family (application)

EP 10816825 A 20100716; JP 2010004620 W 20100716; JP 2011531769 A 20100716