Water purifier

A water purifier comprising:

• a water purification unit configured to provide purified water;
• and
• an ice making unit configured to cool the purified water to generate ice,
• wherein the water purification unit includes:
• a water filter for filtering introduced raw water to provide the purified water and unfiltered living water;
• a purified water tank including a first storage for storing unfiltered water that has not been filtered by the water filter, a second storage for storing the purified water discharged from the water filter, and a separation membrane formed of an impermeable material which independently partitions the first storage and the second storage and has elasticity, wherein the second storage shrinks when the first storage expands, and the first storage shrinks when the second storage expands;
• a flow channel connecting the water filter, the purified water tank, and the ice making unit to provide a passage through which the raw water, the living water, and the purified water flow;
• and
• a valve unit including a plurality of valve modules that are selectively opened and closed to control the flow of the raw water, the living water, and the purified water in the flow channel,
• wherein at least one of the plurality of valve modules has a plurality of openings, and includes a mechanical valve module configured to open and close the plurality of openings by pressure of the raw water, the purified water, or the living water,
• wherein the valve unit includes a flow path switching valve module configured to selectively open and close a first opening, a second opening, a third opening, a fourth opening and a fifth opening to control for purified water,
• wherein the flow channel includes a plurality of flow paths, each of the plurality of flow paths including a plurality of flow passages, each of the flow passages being communicated with a respective one of the plurality of openings, wherein the plurality of valve modules are opened and closed based on a plurality of flow modes,
• wherein the plurality of flow modes include an ice making mode in which the purified water flows to the ice making unit,
• wherein the plurality of valve modules are opened and closed so that in the ice making mode, the unfiltered water flows into the first storage and the purified water discharged from the second storage shrunk by the first storage flows into the ice making unit,
• wherein in the ice making mode, the second opening and the third opening communicate with each other by switching the flow path of the flow path switching valve module such that a living water transfer passage and a living water flow passage are communicated with each other, and
• wherein the ice making unit is disposed above the purified water tank or disposed horizontally with the purified water tank.