EP 2470792 A2 20120704 - ROTARY VANE COMPRESSOR WITH HYDROFLUOROOLEFIN REFRIGERANT GAS AND HIGH SPEED TOOL STEEL VANE.
Title (en)
ROTARY VANE COMPRESSOR WITH HYDROFLUOROOLEFIN REFRIGERANT GAS AND HIGH SPEED TOOL STEEL VANE.
Title (de)
DREHSCHEIBENVERDICHTER MIT HYDROFLUOROLEFIN-KÜHLGAS UND HOCHGESCHWINDIGKEITSSCHAUFEL AUS WERKZEUGSTAHL
Title (fr)
COMPRESSEUR ROTATIF À PALETTES AVEC GAZ RÉFRIGÉRANT HYDROFLUOROOLEFIN ET PALETTES D'ACIER RAPIDE.
Publication
Application
Priority
- JP 2009196247 A 20090827
- JP 2010064321 W 20100818
Abstract (en)
[origin: WO2011024826A2] It was found that a refrigerant mainly containing a carbon-carbon double bond-containing hydrofluoroolefin has a function to suppress abrasive wear, compared to conventional HFC-based refrigerants, because the hydrofluoroolefin generates iron fluoride especially on the surface of the vane and piston, where sliding force is severe, from hydrogen fluoride, even if it is generated in reaction with water and oxygen. It is possible to reduce abrasive wear, by using a refrigerant containing as the base component a hydrofluoroolefin as operating refrigerant and a refrigeration oil 3 miscible with the refrigerant and a vane 10 made of a high-speed tool steel and sintered and quenched, because hydrogen fluoride generated by decomposition of the refrigerant in the region of a vane tip region 10a and a piston 9 peripheral surface, where sliding force is severe is converted to iron fluoride. It is also possible to obtain a hardened structure containing carbides of W, Mo, Cr and V dispersed in a fine martensite matrix and produces the rotary compressor more cost-effectively by quenching and sintering the vane 10.
IPC 8 full level
F04C 18/356 (2006.01)
CPC (source: EP US)
F01C 21/0809 (2013.01 - EP US); F04C 18/3564 (2013.01 - EP US); F04C 23/008 (2013.01 - EP US); F04C 2230/22 (2013.01 - EP US); F04C 2230/92 (2013.01 - EP US); F05C 2203/083 (2013.01 - EP US)
Citation (search report)
See references of WO 2011024826A2
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)
WO 2011024826 A2 20110303; WO 2011024826 A3 20111027; CN 102472282 A 20120523; EP 2470792 A2 20120704; JP 2011047329 A 20110310; US 2012128519 A1 20120524
DOCDB simple family (application)
JP 2010064321 W 20100818; CN 201080035178 A 20100818; EP 10752201 A 20100818; JP 2009196247 A 20090827; US 201013388180 A 20100818