Axial compressor with tandem blades

Abstract

Axial compressor with tandem blades consists of a compressor stage ( 1 ) with a double ( 2 ), or triple ( 3 ) blade arrangement, around an axial (A) rotor disk and corresponding stator (B), to increase the fluid flow deflection angle, with greater camber of the double, or triple profile, greater variation in isentropic total temperature and, consequently, greater rate of compression per stage, which can form multiple stages of the rotor and stator assembly with the same configuration of double or triple blades, providing the assembly with a greater rate of compression.

What is claimed is: 
     
         1 . Axial compressor with tandem blades, wherein is comprised, by stage, of an assembly of double ( 2 ) or triple ( 3 ) tandem blades in a cluster configuration involving the rotor disk (A) and its corresponding stator (B), arranged one after the other in the axial and circumferential direction, providing greater camber of the double or triple profile, with greater deflection of fluid flow (Δβ) without fluid flow losing contact with the blade suction surface, greater variation in isentropic total temperature and greater rate of compression. 
     
     
         2 . Axial compressor with tandem blades, according to  claim 1 , wherein the posterior blade, in the rotor (A) and stator (B), is positioned with a gap nozzle in relation to the front blade; the gap nozzle in the posterior blade position in the axial direction occurs with X=0, when the front blade ends, the back blade begins in the same rotor disk, or in the stator cascade, but with a Y gap in the circumferential positioning. 
     
     
         3 . Axial compressor with tandem blades, according to  claim 2 , wherein by the Y datum point as a function of flow through the channel, calculated to avoid minimizing the wake from the first blade, in order to intervene as little as possible in second blade performance. 
     
     
         4 . Axial compressor with tandem blades, according to  claim 1 , wherein the greater efficiency of the compressor rotor is due to his position in an assembly of small blades, cascade of splitter blades, ( 4 ) in the rotor output channels. 
     
     
         5 . Axial compressor with tandem blades, according to  claim 1 , wherein there is a cluster arrangement of the rotor disk (A) and of the stator (B) in order to form compressors with multiple stages.