A hydrodynamic face seal has a rotating first ring and a stationary second ring. The rotating first ring has an inner face. The stationary second ring has an inner face adjacent to the inner face of the rotating first ring. The inner face of the rotating first ring includes a groove having a fluid inlet portion and a hydrodynamic force generating portion. The fluid inlet portion of the groove has a depth greater than the hydrodynamic force generating portion of the groove. The fluid inlet portion has a minimum depth configured to create a higher pressure than a surrounding pressure around the rotating first ring, while not generating a hydrodynamic or hydrostatic force in the fluid inlet portion.
申请公布号
EP2726763(A1)
申请公布日期
2014.05.07
申请号
EP20120740250
申请日期
2012.07.02
申请人
EATON CORPORATION
发明人
SHORT, JOHN, FRANCIS;RUGGERI, EDWARD, NICHOLAS;BERARD, GERALD, MAURICE