Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade supported radial tip ring and static part
Patent
1991-09-03
1993-02-02
Look, Edward K.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between blade supported radial tip ring and static part
416169A, 416189, 416192, 123 4149, F04D 2908
Patent
active
051833824
ABSTRACT:
The present rotating fan and shroud assembly reduces noise emitted therefrom and increases cooling system efficiency. The rotating fan and shroud assembly when combined with the labyrinth-type seal also improves serviceability and reduces maintenance time and cost. The positioning a the first end of an inlet bell-mouth portion of the shroud assembly between a pair of flexible members allows the assembly to be easily removed for servicing while preventing recirculation of the cooling air. A radially outward extension of the inlet bell-mouth portion, and the positioning of a second end of the inlet bell-mouth portion and its juncture with an intermediate portion in line with a leading edge of each of a plurality of blades provides a uniform contour for the flow of the cooling air as it enters into the plurality of blades. A radially outward extension of an outlet bell-mouth portion 76 extending axially beyond a trailing edge of the blades, and the positioning of a first end of the outlet bell-mouth portion and its juncture with the intermediate portion being substantially centered on the width of each of the plurality of blades further enhances the flow of the cooling air from each of the blades increase efficiency.
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Cain Larry G.
Caterpillar Inc.
Larson James A.
Look Edward K.
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