a detachable rotational filter supporter is disclosed . the supporter can : release a filter when the housing is rotated ; block the flow channel immediately when the filter is separated from the filter supporter ; automatically open the closed flow channel when the filter is installed to the filter supporter ; and simultaneously hold the filter when the housing is located at the original position . therefore , the detachable rotational filter supporter allows the filter to be easily separated from and installed to the water purifier and allows general users to simply replace the filters .