Turbomachine with variable guide/stator blades

Abstract

A turbomachine having at least one flow path, in which at least one stator blade 2 is arranged, which is variable around a rotational axis 1 , and which comprises at its radial end areas one rotary base 3 each, wherein a portion of the rotary base 3 is non-circular, when viewed in a direction of the rotational axis 1 of the stator blade 2.

1 . A turbomachine comprising:
 at least one flow duct,   at least one of a guide blade and a stator blade arranged in the flow duct which is rotatable around a rotational axis, and which comprises at its radial end areas one rotary base each, wherein the rotary base includes a section that is non-circular, when viewed in a direction of the rotational axis.   
   
   
       2 . The turbomachine of  claim 1 , wherein the non-circular section of the rotary base includes two flanks of at least one of a straight and a curved configuration, the flanks being relieved portions on opposite sides of a base circle of the rotary base. 
   
   
       3 . The turbomachine of  claim 2 , wherein a least one of a casing component and a hub component of the turbomachine includes overlapping circular recesses in which rotary bases of adjacent blades are positioned. 
   
   
       4 . The turbomachine of  claim 3 , wherein the two flanks are straight and parallel to one another. 
   
   
       5 . The turbomachine of  claim 3 , wherein the two flanks have curved portions. 
   
   
       6 . The turbomachine of  claim 4 , wherein each of the flanks is the same length. 
   
   
       7 . The turbomachine of  claim 4 , wherein each of the flanks is the same distance from the rotational axis. 
   
   
       8 . The turbomachine of  claim 4 , wherein each of the flanks is a different distance from the rotational axis. 
   
   
       9 . The turbomachine of  claim 1 , wherein each of the flanks is parallel to the rotational axis. 
   
   
       10 . The turbomachine of  claim 1 , wherein each of the flanks includes at least one of an inclined portion and a contoured portion in relation to the rotational axis. 
   
   
       11 . The turbomachine of  claim 1 , wherein a least one of a casing component and a hub component of the turbomachine includes overlapping circular recesses in which rotary bases of adjacent blades are positioned. 
   
   
       12 . The turbomachine of  claim 2 , wherein the two flanks are straight and parallel to one another. 
   
   
       13 . The turbomachine of  claim 2 , wherein the two flanks have curved portions. 
   
   
       14 . The turbomachine of  claim 2 , wherein each of the flanks is the same length. 
   
   
       15 . The turbomachine of  claim 2 , wherein each of the flanks is a different distance from the rotational axis. 
   
   
       16 . The turbomachine of  claim 1 , wherein each of the flanks includes at least one of an inclined portion and a contoured portion in relation to the rotational axis so that adjacent rotary bases can overlap one another. 
   
   
       17 . A turbomachine comprising:
 at least one flow duct,   at least one row of guide/stator blades positioned in the flow duct, each of which is rotatable around a rotational axis and which comprises at its radial end areas one rotary base each, wherein the rotary bases from at least one blade in adjacent blade pairs include portions recessed from a base rotary circle to provide clearance between the adjacent rotary bases such that a distance between the respective rotational axes of the adjacent blade pair is smaller than a diameter of a base circle of the rotary bases.   
   
   
       18 . The turbomachine of  claim 17 , wherein the recessed portions provide clearance between outer edges of the adjacent rotary bases. 
   
   
       19 . The turbomachine of  claim 17 , wherein the recessed portions allow outer edges of the adjacent rotary bases to overlap one another. 
   
   
       20 . The turbomachine of  claim 17 , wherein the rotary bases from both blades in adjacent blade pairs have recessed portions.