Title (en)

ROTARY COMPRESSOR

Title (de)

ROTATIONSVERDICHTER

Title (fr)

COMPRESSEUR ROTATIF

Publication

EP 3141755 A1 20170315 (EN)

Application

EP 16186351 A 20160830

Priority

JP 2015177347 A 20150909

Abstract (en)

The present invention provides a rotary compressor having increased efficiency while ensuring reliability of sliding bearings between eccentric shaft portions and rotors. This is achieved by reducing the axial width and the diameter of the eccentric shaft portions and thereby reducing oil film shear loss between the eccentric shaft portions and the rotors. Provided is a rotary compressor in which a drive shaft 14 includes eccentric shaft portions 15, 16, and rotors 25, 26 rotationally movably fitted to the eccentric shaft portions 15, 16, respectively, are configured to eccentrically rotationally move along the inner peripheral surfaces of the cylinder chambers 17, 18 to thereby compress refrigerant gas or other gases, and further in which bearing rings 33, 34 are provided between the eccentric shaft portions 15, 16 and the rotors 25, 26, and the axial widths of the eccentric shaft portions 15, 16 and bearing rings 33, 34 are smaller than the axial widths of the rotors 25, 26.

IPC 8 full level

F04C 23/00 (2006.01); F04C 18/356 (2006.01); F04C 28/02 (2006.01); F04C 29/00 (2006.01)

CPC (source: EP)

F04C 18/356 (2013.01); F04C 23/001 (2013.01); F04C 23/008 (2013.01); F04C 28/02 (2013.01); F04C 29/0057 (2013.01); F04C 2230/60 (2013.01); F04C 2240/20 (2013.01); F04C 2240/56 (2013.01); F04C 2240/605 (2013.01)

Citation (applicant)

• JP S6092791 U 19850625
• WO 2013057946 A1 20130425 - PANASONIC CORP [JP]

Citation (search report)

• [XY] EP 1850009 A2 20071031 - TOSHIBA CARRIER CORP [JP]
• [X] US 2011058970 A1 20110310 - HUGENROTH JASON JAMES [US]
• [Y] EP 2770212 A1 20140827 - PANASONIC CORP [JP]
• [A] FR 2223570 A1 19741025 - NOVA WERKE AG [CH]

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 3141755 A1 20170315; JP 2017053263 A 20170316

DOCDB simple family (application)

EP 16186351 A 20160830; JP 2015177347 A 20150909