| 摘要 |
PURPOSE:To reduce the replacing or purchasing frequency of filter to a large extent by receiving the filter in a purifier main body in a roll form. CONSTITUTION:A filter 52 is provided in the air passing route in a purifier main body 1 and the roll 5 of a long filter strip 51 having drawing-out length corresponding to two or more times is arranged in the purifier main body 1. The filter 52 is drawn out by predetermined drawing-out length from the roll 5 to be used. As a result, it becomes unnecessary to replace the filter with a new one at every maintenance and, since filter replacing work can be performed only by drawing out the filter from the roll, the filter can easily be replaced at a proper period. |
