High specific speed rotary chamber pump
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United States of America Patent
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-
Mar 30, 1982
Grant Date -
N/A
app pub date -
Mar 23, 1979
filing date -
Mar 23, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved design of a rotary pump is provided having a rotary pumping chamber with stationary axially disposed fluid inlet and outlet passages communicating therewith. To increase the rotational speed and the flow capacity, the axial inlet passage is enlarged in diameter to approach the diameter of the rotary pumping chamber. To impart the required rotational velocity to the fluid entering the chamber, vanes are provided in the rotating chamber immediately adjacent the axial annular inlet passage. The fluid pickup and discharge unit is defined by a hollow stationary member disposed in the rotary pumping chamber and having in one embodiment, a plurality of peripherally spaced inlet openings transversely positioned to receive the high rotating velocity fluid therein, and in another modification, a substantially continuous annular inlet opening in a radial plane. In all cases, the rotational energy of the fluid is converted within the pickup unit to a pressure head by flowing radially inwardly, and the pressured fluid is discharged through an axial portion of the pickup unit.
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