초록

A hydrodynamic fluid film bearing having a series of axially aligned foil bearing modules which act in concert to extend the load carrying capability of the bearing assembly while providing whirl free operation.

대표청구항 ▼

A compliant hydrodynamic fluid film bearing assembly that includes an elongated sleeve housing a rotor shaft to provide a gap between the inside wall of the sleeve and the outer periphery of the shaft, a plurality of independent spaced apart foil bearing units that are axially aligned within the gap

A compliant hydrodynamic fluid film bearing assembly that includes an elongated sleeve housing a rotor shaft to provide a gap between the inside wall of the sleeve and the outer periphery of the shaft, a plurality of independent spaced apart foil bearing units that are axially aligned within the gap in a non-contiguous relationahip, each of said bearing units including a foil sandwich having a support sheet facing the shaft and a superimposed bump foil positioned between the support sheet and inside wall of the sleeve, each sandwich being secured at one end to the said inside wall of the sleeve by an axially disposed joint with the trailing section of the sandwich circumferentially wrapped about the shaft, said axially disposed joints being spaced apart axially to provide a relief channel between each of the adjacent bearing units, said channel extending from the surface of the shaft to the inside wall of the sleeve and the joints of adjacent bearing units being angularly displaced one from the other about the circumference of the sleeve whereby the joints are staggered about the periphery of the sleeve.