| 摘要 |
PROBLEM TO BE SOLVED: To improve compressor efficiency of a centrifugal compressor 27 while enhancing durability of a compressor impeller 31. ! SOLUTION: An annular shroud band 47 is integrally connected in a surrounding manner between rear edge side parts in tip edges 35t of plural compressor blades. An annular shroud ring 55 is disposed radially inside of the shroud band 47 in a recess part 49 of a compressor housing 29. When the rotation state of the compressor impeller 31 changes from a low-rotation state to a high-rotation state, the shroud ring 55 is pressure-welded to the tip edge 35t of the plural compressor blades 35 and the shroud bond 47 by pressure of the recess part 49. ! COPYRIGHT: (C)2015,JPO&INPIT |
