| 摘要 |
An inducer (10) has a hub (11) and a helically formed blade (12) that projects from the hub (11) in the radial direction. This inducer has a thick section (23) in which a first distance (D1) and a second distance (D2) are equal to each other in a region outside a position where a height ratio of the blade 12 is 0.5, whereas the first distance (D1) is smaller than the second distance (D2) in a region inside the position where the height ratio of the blade is 0.5, wherein the height ratio is the ratio of the distance (H2) from a part connecting the hub (11) and a root section (15) of the blade (12) with respect to the height (H1) of the blade, which height is the distance from the part connecting the hub (11) and the root section (15) of the blade (12) to a tip section (16) of the blade (12) in the radial direction of the blade (12). |
