Impeller structure for pump

Details Impeller structure for pump Impeller structure for pump

1990-11-19

1992-06-30

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Perimetric blading extending axially between annular members

416183, 416223B, F01D 514

Patent

active

051257998

ABSTRACT:
In a pump impeller structure employing a plurality of vanes arranged on the periphery of an impeller hub in a substantially radial direction of a pump shaft having a driving connection with the impeller, each vane including a particular geometry of a pressure surface therein. The pressure surface is formed concave in such a manner as to increase an angle defined between two tangential lines on a point of the pressure surface, form the innermost end of the vane to the outermost end of the vane, one tangential line being perpendicular to a straight line drawn in the radial direction of the impeller from the center of the pump shaft to the point on the pressure surface and the other tangential line being drawn along the contour of the pressure surface, both of the tangential lines being included in a same rotational plane of the vane. The pressure surface lying at the outermost end of the vane is located downstream of a point of the pressure surface lying at the innermost end of the vane, with regard to a rotational direction of the impeller.

REFERENCES:
patent: 809711 (1906-01-01), Maier
patent: 867874 (1907-10-01), Capell
patent: 2065716 (1936-12-01), Leonard
patent: 2962207 (1960-11-01), Mayne
patent: 4115030 (1978-09-01), Inagaki et al.

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