Abstract: A filter structure is disclosed. A filter structure according to an aspect of the present disclosure may include a plurality of membranes configured to selectively pass raw water through to produce purified water; a spacer disposed between the plurality of membranes configured to form a space through which the purified water flows; a tube configured to be connected to the space and the outside to form a flow path through which the purified water flows out, the plurality of membranes and the spacer being wound around the tube; and a seal assembly configured to extend along an outer perimeter of the plurality of membranes and seal the space in the outer circumferential direction, the seal assembly having a hardness different from that of the plurality of membranes.

Abstract: Provided is a water purifier comprising: a filter unit filtering water supplied from a water source, including a reverse osmosis filter; a discharge unit discharging water filtered by the filter unit externally; a flushing portion connected to the reverse osmosis filter; and a controller configured to flow water filtered by the reverse osmosis filter to the flushing portion, and to flush the reverse osmosis filter.

Abstract: A water purifier includes a water purification unit, and an ice making unit. 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, 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.

Abstract: According to one embodiment of the present invention, a control method for a water purifier comprises the steps of: filtering inflowing water so as to generate purified water; extracting the generated purified water; measuring the flow rate of the purified water extracted per unit time; flushing a filter part by using purified water generated in the filter part, when the extraction of the purified water is complete; and draining the flushed water to the outside through a residential water outlet of the filter part, wherein, in the purified water generation step, discharging of residential water generated in the purified water generation step is blocked according to the accumulated flow rate during a one-time extraction of the purified water, calculated on the basis of the flow rate of the purified water.

Abstract: Provided is a water purifier comprising: a filter unit filtering water supplied from a water source, including a reverse osmosis filter; a discharge unit discharging water filtered by the filter unit externally; a flushing portion connected to the reverse osmosis filter; and a controller configured to flow water filtered by the reverse osmosis filter to the flushing portion, and to flush the reverse osmosis filter.

Abstract: A reverse osmosis filtering module includes: a purified water discharge pipe in which a purified water discharge path is formed, and which has a communication hole that is formed on an outer periphery thereof and communicates with the purified water discharge path; a reverse osmosis filtering part including a reverse osmosis filtering member in which a purified water flow space is formed, and which is wound around the purified water discharge pipe such that the purified water flow space communicates with the communication hole; a first flow channel formation cap provided at one side and having an inlet hole; and a second flow channel formation cap provided at the other side of the reverse osmosis filtering part and having an outlet hole.

Abstract: A direct water purifier comprises: a first filter for filtering water flowing in through a first flow path; a second filter receiving, through a second flow path, and filtering the water filtered by the first filter; a first valve, provided on the second flow path; a pump, provided on the second flow path, for supplying, to the second filter, water at a water pressure equal to or greater than a preset water pressure; a third filter receiving, through a third flow path, and filtering the water filtered by the second filter; a second valve, provided on the third flow path, for decreasing a pressure in the flow path; a third valve, provided at a rear end of the second valve, for preventing a backflow of the water; and a heating unit receiving the water filtered by the third filter and heating the water to a preset temperature.

Abstract: A water treatment apparatus is provided. The water treatment apparatus includes a filtering unit including a water filter filtering raw water, a sterilizing water generator producing sterilizing water from purified water filtered by at least a portion of the filtering unit, and a discharge member through which the purified water, filtered by the filtering unit, is discharged externally. The sterilizing water produced in the sterilizing water generator sterilizes the discharge member and at least a portion of a flow path connected to the discharge member.

Abstract: A reverse osmosis filtering module includes: a purified water discharge pipe in which a purified water discharge path is formed, and which has a communication hole that is formed on an outer periphery thereof and communicates with the purified water discharge path; a reverse osmosis filtering part including a reverse osmosis filtering member in which a purified water flow space is formed, and which is wound around the purified water discharge pipe such that the purified water flow space communicates with the communication hole; a first flow channel formation cap provided at one side and having an inlet hole; and a second flow channel formation cap provided at the other side of the reverse osmosis filtering part and having an outlet hole.

Abstract: A water treatment apparatus is provided. The water treatment apparatus includes a filtering unit including a water filter filtering raw water, a sterilizing water generator producing sterilizing water from purified water filtered by at least a portion of the filtering unit, and a discharge member through which the purified water, filtered by the filtering unit, is discharged externally. The sterilizing water produced in the sterilizing water generator sterilizes the discharge member and at least a portion of a flow path connected to the discharge member.

Abstract: According to one embodiment of the present invention, a control method for a water purifier comprises the steps of: filtering inflowing water so as to generate purified water; extracting the generated purified water; measuring the flow rate of the purified water extracted per unit time; flushing a filter part by using purified water generated in the filter part, when the extraction of the purified water is complete; and draining the flushed water to the outside through a residential water outlet of the filter part, wherein, in the purified water generation step, discharging of residential water generated in the purified water generation step is blocked according to the accumulated flow rate during a one-time extraction of the purified water, calculated on the basis of the flow rate of the purified water.