| 摘要 |
PROBLEM TO BE SOLVED: To provide a washing unit to wash a portable duct securely and easily. SOLUTION: In a washing tank whose upper part is openable, washing water injection parts 2a and 2b, which are respectively arranged in the center part and in the inside wall part; and air injection parts 3a and 3b which are arranged respectively at the upper sides of the washing water injection parts 2a and 2b, are provided. A freely bendable curtain 13, through the center part of which a duct can pass, is provided at the upper opening of the washing tank. |
