| 摘要 |
Provided is a water tank that allows blades to move easily. A water tank 1, in which there is formed a pair of protruding parts that protrude inward from an inner wall surface facing the water tank 1, and in which the upper surface is open; wherein the pair of protruding parts form an inclined surface 13 that is inclined toward the bottom surface part 15 of the water tank 1. The pair of protruding parts are provided with, at one end part of the inclined surface 13, a high step portion 11 that extends horizontally on the inner wall surface. The high step portion 11 includes a first horizontal surface 11a that extends from the one end part of the inclined surface 13 in the direction away from the inclined surface 13, and a second horizontal surface 11b that extends along the inclined surface 13. The inclined surface 13 and the second horizontal surface 11b diverge from the first horizontal surface 11a. |
