EP 1875076 B1 20081105 - VOLUMETRIC ROTARY MACHINE WITH ROTORS HAVING ASYMMETRIC PROFILES
Title (en)
VOLUMETRIC ROTARY MACHINE WITH ROTORS HAVING ASYMMETRIC PROFILES
Title (de)
VOLUMETRISCHE ROTATIONSMASCHINE MIT ASYMMETRISCHE PROFILE AUFWEISENDEN ROTOREN
Title (fr)
MACHINE ROTATIVE VOLUMÉTRIQUE AVEC ROTORS À PROFILS ASYMÉTRIQUES
Publication
Application
Priority
EP 2005050692 W 20050216
Abstract (en)
[origin: WO2006087038A1] The invention relates to a volumetric rotary machine (1) comprising a housing (2) and at least two twin rotors (3, 4) that have asymmetric profiles each having at least one helicoidal thread (7) that, in a direction radial to the longitudinal axis (6) of the one considered of the twin rotors (3, 4) and above the surface (51) of this rotor, has a first predetermined dimension ( h ) and, on the one hand, a first flank (9) has a modified curve. This volumetric rotary machine (1) comprising a housing (2) and at least two twin rotors (3, 4) having asymmetric profiles, is characterized in that these twin rotors (3, 4) are each comprised of a hub (5) from which at least one helicoidal thread (7) projects that extends above said hub (5) like a tooth (8). This tooth (8), in a direction radial to the longitudinal axis (6) of the one considered of the twin rotors (3, 4) and above the surface (51) of this rotor, has a first predetermined dimension ( h ). This machine is further characterized in that it does not comprise a first flank (9) and a second flank (10) whose conventional curves (91) and (101) meet at a first point ( w ) whereby forming a sharp edge along the helicoidal thread (7). Rather, on the one hand, the first flank (9) has a curve (92), called modified curve (92), of which the position and the length of arc are predetermined in such a manner that this modified curve (92) of the first flank (9) and the conventional curve (101) of the second flank (10) each join one of the opposite ends ( B ) and ( C ) of a short joining section (12) that, due to its presence all along the helicoidal thread (7), constitutes a helicoidal surface (13) that eliminates the presence of a sharp edge and, on the other hand, this joining section (12), in a direction radial to the longitudinal axis (6) of the one considered of the twin rotors (3, 4), has a second predetermined dimension ("L") such that the ratio of the second dimension ( L ) to the first dimension ( h ) ranges from 0.005 and 0.1 (five thousandths and a tenth).
IPC 8 full level
F04C 18/16 (2006.01)
CPC (source: EP KR US)
F04C 18/084 (2013.01 - EP US); F04C 18/16 (2013.01 - KR); F04C 18/16 (2013.01 - EP US)
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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006087038 A1 20060824; AT E413531 T1 20081115; AU 2005327862 A1 20060824; AU 2005327862 B2 20110602; CA 2596603 A1 20060824; CA 2596603 C 20120821; CN 100538078 C 20090909; CN 101142410 A 20080312; DE 602005010912 D1 20081218; EP 1875076 A1 20080109; EP 1875076 B1 20081105; ES 2318456 T3 20090501; JP 2008530437 A 20080807; JP 4669011 B2 20110413; KR 101176980 B1 20120824; KR 20080002749 A 20080104; MY 143528 A 20110531; TW 200630541 A 20060901; TW I372208 B 20120911; US 2008240967 A1 20081002; US 7625191 B2 20091201
DOCDB simple family (application)
EP 2005050692 W 20050216; AT 05708034 T 20050216; AU 2005327862 A 20050216; CA 2596603 A 20050216; CN 200580048107 A 20050216; DE 602005010912 T 20050216; EP 05708034 A 20050216; ES 05708034 T 20050216; JP 2007555464 A 20050216; KR 20077018552 A 20050216; MY PI20060612 A 20060214; TW 94131256 A 20050912; US 88330705 A 20050216