HUMIDIFIER, FILTER, AND ROTATION DRIVE STRUCTURE

摘要

A humidifier has a disc-shaped filter (2) constructed from a water absorptive filter body (20) and a non-water-absorptive holding body (30) and placed in a vertical position. The filter (2) is circumferentially rotated by a rotation drive mechanism (4) with a circumferential part of the filter (2) immersed in water in a water tank (18). The filter (2) has water absorption regions (2a) and non-water-absorption regions (2b) arranged so as to be circumferentially adjacent to each other. This causes two conditions to be continuously alternated as the filter (2) is circumferentially rotated, a condition where a water absorption region (2a) is immersed in the water and the filter body (20) of the filter (2) sucks the water via water passage holes (30a) and a condition where a non-water-absorptive region (2b) is immersed in the water and the filter body (20) is prevented by a non-water-absorptive water-proof section (30b) from sucking the water. As a result, with the filter (2) placed in the vertical position and immersed in the water, the humidifier can allow the filter (2) to absorb the water and can prevent the filter (2) from absorbing the water.