| 摘要 |
<p>The device has vacuum cleaner and disposable non-woven fabric filter bag with superficial folds, each of which has regions (31a) lying within area of filter bag wall (32) and regions (31b) projecting from area of filter bag wall and can unfold during a vacuuming operation. The vacuum cleaner has filter bag holding compartment (33) with rigid walls, on which spacers (35,36) are provided to keep the folded and unfolded regions of fold at a distance from wall of compartment.</p> |
