Global Patent Index - EP 2009285 A4

EP 2009285 A4 20140115 - COMPRESSOR

Title (en)

COMPRESSOR

Title (de)

VERDICHTER

Title (fr)

COMPRESSEUR

Publication

EP 2009285 A4 20140115 (EN)

Application

EP 07741682 A 20070416

Priority

  • JP 2007058246 W 20070416
  • JP 2006116226 A 20060419

Abstract (en)

[origin: EP2009285A1] A stator core 510 of a motor 3 has a plurality of oil return passages 530 extending through one surface 510a and the other surface 510b of the core. On the other surface 510b of the stator core 510, a hydraulic diameter of each oil return passage 530 is 5 mm or larger, and a ratio of a total area of the oil return passages 530 to an area of a virtual circle having a diameter equal to a maximum outer diameter of the stator core 510 is 5 to 15%. Thereby, lubricating oil accumulated on the other surface 510b side of the stator core 510 is returned to an oil reservoir 9 through the oil return passages 530, and shortage of oil in the oil reservoir 9 is prevented. Furthermore, a cross sectional area of the stator core 510 can be securely kept, and motor efficiency is maintained.

IPC 8 full level

F04C 29/02 (2006.01); F04B 39/02 (2006.01); F04C 23/00 (2006.01); F04C 18/32 (2006.01)

CPC (source: EP)

F04B 39/0284 (2013.01); F04C 23/008 (2013.01); F04C 29/028 (2013.01); F04C 18/3564 (2013.01); F04C 29/045 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2009285 A1 20081231; EP 2009285 A4 20140115; EP 2009285 B1 20160914; AU 2007242125 A1 20071101; AU 2007242125 B2 20100527; CN 101415948 A 20090422; ES 2594654 T3 20161221; JP 2007285266 A 20071101; JP 5050393 B2 20121017; KR 101156261 B1 20120613; KR 20080099347 A 20081112; US 2009100861 A1 20090423; WO 2007123074 A1 20071101

DOCDB simple family (application)

EP 07741682 A 20070416; AU 2007242125 A 20070416; CN 200780011876 A 20070416; ES 07741682 T 20070416; JP 2006116226 A 20060419; JP 2007058246 W 20070416; KR 20087024661 A 20070416; US 29750507 A 20070416