EP 2066903 A4 20140122 - PUMP
Title (en)
PUMP
Title (de)
PUMPE
Title (fr)
POMPE
Publication
Application
Priority
- FI 2007050480 W 20070911
- FI 20060807 A 20060911
Abstract (en)
[origin: WO2008031922A1] The invention relates to a pump comprising a pump chamber (1); a suction duct (2) which leads into the pump chamber; a discharge duct (3) which leads out of the pump chamber; in the pump chamber a rotor (4) having a shaft (5) in which the cross-sectional profile of the outer surface is a circular arch, and a spiral flange (6) supported on the shaft; and, parallel to the shaft of the rotor and following the shape of the circular outer surface thereof, a disk (7) that is arranged to rotate in a narrow disk chamber (8) opening into the pump chamber, and is provided with a slot (9) for the spiral flange. In accordance with the invention, the inner surface of the pump chamber (1) is spherical; the periphery of the spiral flange (6) corresponds by shape to the spherical surface, resting tightly against it; the spiral flange makes a full revolution around the shaft (5); and the disk comprises, at intervals of 90°, four radial slots (9) through which the spiral flange is able to slide, so that, as the rotor rotates 360°, the disk will rotate 90°.
IPC 8 full level
F04C 3/04 (2006.01)
CPC (source: EP FI)
F04C 3/04 (2013.01 - EP FI); F04C 13/002 (2013.01 - EP); F04C 2210/44 (2013.01 - EP)
Citation (search report)
- [A] US 983365 A 19110207 - HASKELL BYRON W [US]
- [A] WO 8203428 A1 19821014 - TERLING AB GUSTAV [SE], et al
- See also references of WO 2008031922A1
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 LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008031922 A1 20080320; EP 2066903 A1 20090610; EP 2066903 A4 20140122; FI 20060807 A0 20060911; FI 20060807 L 20080312
DOCDB simple family (application)
FI 2007050480 W 20070911; EP 07803741 A 20070911; FI 20060807 A 20060911