公开(公告)号：EP2422048A2

公开(公告)日：2012-02-29

申请号：EP10719766.7

申请日：2010-04-21

申请人： PDD Innovations Limited

发明人： HAYES-PANKHURST, Richard, Paul ,  ROSS, Peter, William

IPC分类号： F01C5/04 ,  F01C19/00 ,  F04C15/00 ,  F04C5/00

CPC分类号： F04C15/00 ,  F01C5/04 ,  F01C19/005 ,  F04C2/22 ,  F04C5/00 ,  F04C15/0015 ,  F04C2240/30 ,  F04C2250/201

摘要： A pump comprises a housing (10, 210, 300, 410), the housing having an interior defining a rotor path (10, 210, 300, 410), an inlet (111, 211) formed in the housing (10, 210, 300, 410) at a first position on said rotor path, an outlet (12, 212) formed in the housing (10, 210, 300, 410) at a second position on said rotor path spaced from said first position. A rotor (15, 315, 350, 415) is rotatable in the housing. At least one first surface is formed on the rotor (15, 315, 350, 415) and seals against said rotor path of the housing (10, 210, 300, 410). At least one second surface is formed on said rotor (15, 315, 350, 415) circumferentially spaced from said first surface and forms a chamber with the rotor path that travels around said rotor path on rotation of the rotor (15, 315 350, 415) to convey fluid around the housing (10, 210, 300, 410) from the inlet (111, 211) to the outlet (12, 212). A resilient seal (114, 214) is formed in one piece with the housing (10, 210, 300, 410), located on said rotor path and so extends between the outlet (12, 212) and the inlet (111, 211) in the direction of rotation of said rotor (15, 315, 350, 415) that the first rotor surface seals with, and resiliently deforms, the seal (114, 214), as the rotor (15, 315, 350, 415) rotates around the rotor path within the housing to prevent fluid flow from said outlet (12, 212) to said inlet (111, 211) past the seal. A passage (101, 201) may be provided to supply fluid to an under surface of the seal (114, 214) at a pressure that acts to urge the seal (114, 214) against the rotor (15, 315, 350, 415). The rotor path may be frustoconical with the first surface of the rotor (15, 315, 350, 415) also being frustoconical and being a mating fit with the rotor path.

摘要翻译： 泵包括壳体，其具有限定转子路径的内部，在所述壳体中在所述转子路径上的第一位置处形成的入口，在所述转子路径上与所述第一位置间隔开的第二位置处形成在所述壳体中的出口。 转子可在壳体中旋转，其中第一表面与壳体密封。 第二表面形成在所述转子上周向间隔开所述第一表面并且形成围绕所述转子路径行进的腔室，以将流体从入口传送到出口。 与壳体形成的弹性密封件位于转子路径上，以防止流体从所述出口流到所述入口经过密封件。 可以提供通道以将流体以用于将密封件推靠在转子上的压力提供给密封件的下表面。