| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a dust collection device that efficiently conveys dust to a dust collection chamber and restrains noise when removing dust.SOLUTION: A dust collection device comprises: a main body (1) including a suction port for sucking dust; an electric air blower (11) for generating a suction wind; a dust collection chamber (12) for storing dust sucked from the suction port; and an internal flow passage (16) consisting of a duct (14) extending toward the inside of the main body from the suction port (2) and a passage (15). The duct (14) has a cross-sectional area that gradually decreases toward the passage (15) on the inside of the main body from the suction port (2). Thereby, the dust collection device that efficiently conveys dust to the dust collection chamber (12) can be realized.</p> |
