Global Patent Index - EP 2647846 A4

EP 2647846 A4 20150225 - ROTARY PISTON COMPRESSOR

Title (en)

ROTARY PISTON COMPRESSOR

Title (de)

DREHKOLBENVERDICHTER

Title (fr)

COMPRESEUR À PISTON ROTATIF

Publication

EP 2647846 A4 20150225 (EN)

Application

EP 11818464 A 20110726

Priority

  • UA A201009470 A 20100728
  • UA 2011000059 W 20110726

Abstract (en)

[origin: EP2647846A1] The invention is concerned with the field of constructing compressors and can be used in stationary and vehicle gas (air) and refrigerating plants, air-conditioners, and heat pumps. In a rotary piston compressor comprising an epitrochoidal casing with a rotor situated on an eccentric shaft, a lubricant-containing crankcase is fastened to a rear side cover. A system of channels is embodied as an inclined or radial opening formed within an expansion zone and as an axial opening connected thereto through a large-diameter chamber and passing through the casing and connected to the ejector. Radial channels are formed in the working surfaces of the side covers in order to connect the crankcase cavity to the working chambers during a suction period via an annular gap formed between the eccentric shaft and the rear side cover. A device for metering the supply of lubricant is embodied as a spring-loaded valve and a flexible split ring that has a gap of a predetermined metering size at the location of the slit. The valve is mounted in front of the ejector in the large-diameter chamber. The split flexible ring is mounted in the annular gap between the eccentric shaft and the rear side cover, wherein said annular gap is covered by the ring, and a gap of a predetermined metering size is formed at the location of a slit of said ring.

IPC 8 full level

F04C 18/22 (2006.01); F04C 29/02 (2006.01)

CPC (source: EP KR)

F04C 18/00 (2013.01 - KR); F04C 18/02 (2013.01 - KR); F04C 18/04 (2013.01 - KR); F04C 18/22 (2013.01 - KR); F04C 29/00 (2013.01 - KR); F04C 29/02 (2013.01 - KR); F04C 29/028 (2013.01 - EP); F04C 29/068 (2013.01 - KR); F04C 18/22 (2013.01 - EP)

Citation (search report)

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 2647846 A1 20131009; EP 2647846 A4 20150225; CN 203321830 U 20131204; CN 203641013 U 20140611; KR 20130092568 A 20130820; RU 2013106968 A 20140910; RU 2535307 C2 20141210; UA 104999 C2 20140410; WO 2012023916 A1 20120223

DOCDB simple family (application)

EP 11818464 A 20110726; CN 201190000635 U 20110726; CN 201320544759 U 20110726; KR 20137004545 A 20110726; RU 2013106968 A 20110726; UA 2011000059 W 20110726; UA A201009470 A 20100728