Rotor blade for a compressor and compressor having such a rotor blade

Patent metadata

Field	Value
Publication number	US-10012235-B2
Application number	US-201414276602-A
Country	US
Kind code	B2
Filing date	May 13, 2014
Priority date	May 14, 2013
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A rotor blade of an axial compressor includes: a blade root; and a blade leaf. The blade leaf has: a flow inlet edge, a flow outlet edge, a pressure side extending between the flow inlet edge and the flow outlet edge and a suction side extending between the flow inlet edge and the flow outlet edge, which together define a blade profile of the blade leaf in Cartesian coordinate values x, y and z such that first and second profile coordinates, or the coordinates x and y when joining via continuous arcs, each describe a smooth profile section on a radial section height along a third profile coordinate, or the coordinate value z, and the joining of the radial profile sections with a smoothing function describe the blade profile of the blade leaf.

First claim

What is claimed is:

1. A rotor blade ( 10 ) of an axial compressor, comprising:
a blade root ( 11 ), via which the rotor blade is fastenable to a rotor basic body of a rotor of the axial compressor; and
a blade leaf ( 12 ), configured to provide flow deflection, the blade leaf ( 12 ) having:
a flow inlet edge ( 14 ),
a flow outlet edge ( 15 ),
a pressure side ( 16 ) extending between the flow inlet edge ( 14 ) and the flow outlet edge ( 15 ), and
a suction side ( 17 ) extending between the flow inlet edge ( 14 ) and the flow outlet edge ( 15 ),

wherein the flow inlet edge ( 14 ), the flow outlet edge ( 15 ), the pressure side ( 16 ) and the suction side ( 17 ) together define a blade profile of the blade leaf ( 12 ) in Cartesian coordinate values x, y and z such that first and second profile coordinates, or the coordinates x and y when joining via continuous arcs, each describe a smooth profile section on a radial section height along a third profile coordinate, or the coordinate value z, and the joining of the radial profile sections with a smoothing function describe the blade profile of the blade leaf ( 12 ),
wherein in the region of each radial profile section a maximum profile thickness lies in a section between 45% and 52% of the length of a camber line ( 18 ) extending starting from the flow inlet edge ( 14 ) in the direction of the flow outlet edge ( 15 ) and running between the pressure side ( 16 ) and the suction side ( 17 ), and
wherein the blade has the following T max/C ratios:
a root portion of the blade has T max/C ratio of 0.15:
a tip portion of the blade has T max/C ratio of 0.05; and
a mid portion centered at about sixty percent of the blade has T max/C ratio of 0.07.

2. The rotor blade according to claim 1 , wherein starting from radially inner profile sections of the rotor blade in the direction of radially outer profile sections the respective maximum profile thickness is increasingly shifted in the direction of the flow outlet edge ( 15 ).

3. A rotor with at least one rotor blade according to claim 1 .

4. A compressor with at least one rotor according to claim 1 .

Assignees

• Hoermeyer Klaus
• Eisenberg Bernhard
• Emmrich Roland
• Anding Dirk
• Man Diesel & Turbo Se

Inventors

• Hörmeyer Klaus
• Eisenberg Bernhard
• Emmrich Roland
• Anding Dirk

Classifications

• F01D5/282

  Selecting composite materials, e.g. blades with reinforcing filaments · CPC title

• F04D29/18

  Rotors (specially for elastic fluids F04D29/26) · CPC title

• F01D5/02

  Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D1/34; stators F01D9/00 {; selecting particular materials F01D5/28}) · CPC title

• F04D29/181 Primary

  Axial flow rotors (F04D29/185 take precedence) · CPC title

• F04D29/384

  characterised by form · CPC title