EP 3211239 A4 20180808 - CRANKSHAFT FOR ROTARY COMPRESSOR, ROTARY COMPRESSOR AND REFRIGERATING CYCLE DEVICE
Title (en)
CRANKSHAFT FOR ROTARY COMPRESSOR, ROTARY COMPRESSOR AND REFRIGERATING CYCLE DEVICE
Title (de)
KURBELWELLE FÜR ROTATIONSVERDICHTER, ROTATIONSVERDICHTER UND KÄLTEKREISLAUFVORRICHTUNG
Title (fr)
VILEBREQUIN POUR COMPRESSEUR ROTATIF, COMPRESSEUR ROTATIF ET DISPOSITIF À CYCLE DE RÉFRIGÉRATION
Publication
Application
Priority
CN 2015078608 W 20150508
Abstract (en)
[origin: EP3211239A1] A crankshaft for a rotary compressor includes: a body (1) and an eccentric portion (2), the eccentric portion (2) being fitted over the body (1), wherein at least one of a flexible structure (21) and an oil pressure surface (22) is arranged on the eccentric portion (2). The flexible structure (21) is configured to deform inwards when subject to an external force in an inward direction. The oil pressure surface (22) is configured in such a way that in a direction opposite to a rotating direction of a rotating central axis of a crankshaft (300), a distance between a front end (221) of the oil pressure surface (22) and the central axis of the eccentric portion (2) is smaller than a distance between a tail end (222) of the oil pressure surface (22) and the central axis of the eccentric portion (2). Also disclosed are a rotary compressor and a refrigerating cycle device. The crankshaft can effectively solve the problem that a rotary compressor gets stuck due to abnormal contact between a piston and an air cylinder, and a high-pressure oil wedge can be formed at a tail portion of an oil cavity, thereby increasing an inlet oil pressure, and improving the environment of lubrication between an eccentric portion and a piston.
IPC 8 full level
F04C 18/356 (2006.01); F04C 29/00 (2006.01); F04C 29/02 (2006.01)
CPC (source: EP US)
F04C 18/356 (2013.01 - EP US); F04C 29/0057 (2013.01 - EP US); F04C 29/02 (2013.01 - EP US); F25B 1/04 (2013.01 - US); F04C 2240/30 (2013.01 - US); F04C 2240/50 (2013.01 - US); F04C 2240/60 (2013.01 - EP US); F25B 2500/16 (2013.01 - US)
Citation (search report)
- [X] US 5328342 A 19940712 - ISHII MINORU [JP], et al
- [A] US 2006222543 A1 20061005 - PARK JAE W [KR], et al
- See references of WO 2016179765A1
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 3211239 A1 20170830; EP 3211239 A4 20180808; JP 2017538066 A 20171221; JP 6467055 B2 20190206; US 2017335849 A1 20171123; WO 2016179765 A1 20161117
DOCDB simple family (application)
EP 15891468 A 20150508; CN 2015078608 W 20150508; JP 2017531701 A 20150508; US 201515533557 A 20150508