| 摘要 |
A cleaning device is provided, including a top portion, a middle portion, and a bottom portion. The top portion includes a first opening. The middle portion is connected to the top portion, and includes an inlet on a lateral side, an annular channel communicated with the inlet, and a second opening communicated with the first opening. The bottom portion is connected to the middle portion, and includes a reservoir and a third opening. The third opening communicates the second opening and the reservoir. |
