Abstract: Provided is an air cleaner including a body; a cover having an intake hole configured to take air in the body; and a detachable member provided to the body and the cover, and configured to detachably apply the cover relative to the body. The detachable member includes a first detachable element provided to the cover; and a second detachable element provided to the body and configured to be detachable with the first detachable element by a magnetic force.

Abstract: A water filter assembly, and a refrigerator and a water purifier having the same, including: a manifold having a inflow path through which raw water flows in and an outflow path through which filtered water flows out; a case supporting the manifold; and a filter cartridge coupled to a lower side of the case such that it is separable and connected with the outflow port of the manifold, wherein a fluid flow control unit is installed between the manifold and the filter cartridge and rotates according to a rotation of the filter cartridge, the center of the rotation is the same as the center of an outlet of the filter cartridge, and the fluid flow control unit includes a disk having a connection hole allowing the raw water inflow path and an inlet of the filter cartridge to communicate only at a certain position.

Abstract: A water filter assembly, and a refrigerator and a water purifier having the same, including: a manifold having a inflow path through which raw water flows in and an outflow path through which filtered water flows out; a case supporting the manifold; and a filter cartridge coupled to a lower side of the case such that it is separable and connected with the outflow port of the manifold, wherein a fluid flow control unit is installed between the manifold and the filter cartridge and rotates according to a rotation of the filter cartridge, the center of the rotation is the same as the center of an outlet of the filter cartridge, and the fluid flow control unit includes a disk having a connection hole allowing the raw water inflow path and an inlet of the filter cartridge to communicate only at a certain position.