Abstract: The disclosure includes a water tray member receiving raw water for ice-making from a water tank, an ice making unit cooling the raw water received in the water tray member and forming ice, a heating unit heating the raw water received in the water tray member, and a control unit controlling an operation of the heating unit such that the raw water received in the water tray member is heated before the ice making unit cools the raw water in the water tray member. According to the ice maker, the temperature of the raw water received in an ice-making water tray is raised to a preset temperature at the initial stage of an ice making process, thereby preventing the formation of an opaque layer in the central portion of ice.

Abstract: A coffee extraction device is disclosed. A coffee extraction device according to an embodiment of the present invention comprises: a pump which is connected to a water supply source and pressurizes water supplied from the water supply source; a heater for heating the water pressurized by the pump; a coffee extraction unit for extracting coffee using the water heated by the heater; and a discharge member for discharging the coffee, which has been extracted by the coffee extraction unit, to the outside, wherein a vent valve may be provided between the heater and the coffee extraction unit, the vent valve being closed during coffee extraction and being opened after coffee extraction.

Abstract: Disclosed is an air purifier able to maintain the normal state of drive of a disk-shaped humidification filter by controlling the state of rotation of the humidification filter. The air purifier can maintain the normal state of drive of the humidification filter by using a stepping motor and the control unit in order to vary the state of rotation of the humidification filter and thereby remove extraneous material when the humidification filter is rotating abnormally due to extraneous material.

Abstract: A bidet having a variable nozzle. The bidet includes a linear channel connected to a feed channel through which water is fed, a nozzle part connected to the linear channel and ejecting the water toward an area of the human body to be washed, and a variable channel connected to opposite sides of the nozzle part and feeding the water to the nozzle part while the water to be ejected is pressurized symmetrically on the opposite sides of the nozzle part. Thereby, the bidet can adjust a spreading angle of the water ejected from the nozzle part according to an area to be washed.

Abstract: An apparatus for purifying and humidifying air which enables separate supply of purified air and humidified air and controls the amount of humidified air discharged and which includes dual flow paths to increase the efficiency of air transfer. The apparatus includes a case having a suction port through which external air is introduced thereinto and a discharge port through which the introduced air is discharged, a circulation fan for causing the introduced air to flow toward the discharge port, a filter unit disposed in the case to filter the introduced air, a humidification unit disposed at a low position in the case to supply the air passed through the filter unit with moisture, and a flow path control unit disposed between the suction port and the humidification unit to control flow of the air passed through the filter unit.