Turbomachine blade

Details Turbomachine blade Turbomachine blade

2007-12-31

2010-06-22

Kershteyn, Igor (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

C416S238000, C416S242000, C416S243000

Reexamination Certificate

active

07740451

ABSTRACT:
The blades of a turbomachine comprise airfoils, which are bent such that the lean angle (φ), defined as the angle which the stacking line of the airfoil includes with the radial direction, and measured in the direction of rotation (ω), is variable along the width of the flow channel and decreases from the hub towards the housing.

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Form PCT/ISA/210 (International Search Report, with English language translation of category of cited documents) dated Oct. 18, 2006.
Form PCT/ISA/237 (Written Opinion of the International Searching Authority) dated Oct. 18, 2006.
Swiss Search Report (with English language translation of category of cited documents) dated Oct. 23, 2005.
Christoph Pioske et al., “Dreidimensionale Turbinenbeschaufelung”, MZT Motortechnische Zeitschrift, Jun. 1997, vol. 58, No. 6, pp. 358-362, XP-000700766 (cited in International Search Report and Swiss Search Report).
Traupel, Thermische Trubomaschinen (“Thermal Turbomaschines”), vol. 1, 4th Edition, Springer-Verlag, 2001, p. 326 (cited on p. 4-5 of the specification).

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