Abstract: The present invention relates to an air purifier in which vertical rotation and horizontal rotation are performed simultaneously and independently and which has a stable structure.

Abstract: The present invention relates to an air purifier in which vertical rotation and horizontal rotation are performed simultaneously and independently and which has a stable structure.

Abstract: A hot water supply method according to one embodiment of the present invention comprises the steps of: measuring a temperature of water flowing into an water inlet part; turning on a first heater and a second heater if a target temperature is a standard temperature or higher; adjusting a degree of opening and closing of a flow rate adjusting valve on the basis of a difference between the target temperature and the temperature of water flowing into the water inlet part; measuring a temperature of water discharged to a water outlet part; and readjusting the degree of opening and closing of the flow rate adjusting valve on the basis of a difference between the target temperature and the temperature of water discharged to the water outlet part.

Abstract: A hot water supply method according to one embodiment of the present invention comprises the steps of: measuring a temperature of water flowing into an water inlet part; turning on a first heater and a second heater if a target temperature is a standard temperature or higher; adjusting a degree of opening and closing of a flow rate adjusting valve on the basis of a difference between the target temperature and the temperature of water flowing into the water inlet part; measuring a temperature of water discharged to a water outlet part; and readjusting the degree of opening and closing of the flow rate adjusting valve on the basis of a difference between the target temperature and the temperature of water discharged to the water outlet part.

Abstract: Provided is a method for sterilizing a water treatment apparatus having a plurality of tanks. The method includes, performing a sterilization preparation process to drain purified water from the first tank until a first amount of purified water is left, performing a sterilizing process to sterilize the first tank by supplying the sterilized water supplied from the sterilizing module, to drain water from the first tank through a first water outlet pipe until a second amount of water is left in the first tank, and to drain the second amount of water remaining in the first tank into the second tank through a second water outlet pipe.

Abstract: There is provided an ice making method capable of forming ice to an intended level although a sensing unit configured to sense whether or not a formation of ice has reached the intended level malfunctions. The ice making method includes: an ice making initiation step S100 of forming ice by an ice formation unit; an ice release time determining step S200 of determining a point in time at which ice is to be released in consideration of a signal from a detection unit for detecting whether the formation of ice has reached an intended level and an ice making lapse time which has lapsed after the formation of ice was initiated by the ice formation unit; and an ice releasing step S300 of releasing the formed ice when a point in time at which ice is to be released is determined in the ice releasing time determining step.

Abstract: There is provided an ice making method capable of reducing the required number of gyrations of a gyration member used for making ice to have a high level of transparency and determining a point in time at which ice is to be released. The ice making method for making highly transparent ice by revolving a gyration member provided in a tray member in which water is put such that a plurality of dipping members, on which ice is generated or from which generated ice is released, are immersed, wherein a method for driving the gyration member in making ice to be supplied to a user and a method for driving the gyration member in making ice to be used for generating cold water are different in order to reduce the number of gyrations of the gyration member.

Abstract: Provided is a method for sterilizing a water treatment apparatus having a plurality of tanks. The method includes, performing a sterilization preparation process to drain purified water from the first tank until a first amount of purified water is left, performing a sterilizing process to sterilize the first tank by supplying the sterilized water supplied from the sterilizing module, to drain water from the first tank through a first water outlet pipe until a second amount of water is left in the first tank, and to drain the second amount of water remaining in the first tank into the second tank through a second water outlet pipe.

Abstract: Provided is a method for sterilizing a water treatment apparatus having a plurality of tanks. The method includes, performing a sterilization preparation process to drain purified water from the first tank until a first amount of purified water is left, performing a sterilizing process to sterilize the first tank by supplying the sterilized water supplied from the sterilizing module, to drain water from the first tank through a first water outlet pipe until a second amount of water is left in the first tank, and to drain the second amount of water remaining in the first tank into the second tank through a second water outlet pipe.

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: 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: 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: 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: 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: Provided is a method for sterilizing a water treatment apparatus having a plurality of tanks. The method includes, performing a sterilization preparation process to drain purified water from the first tank until a first amount of purified water is left, performing a sterilizing process to sterilize the first tank by supplying the sterilized water supplied from the sterilizing module, to drain water from the first tank through a first water outlet pipe until a second amount of water is left in the first tank, and to drain the second amount of water remaining in the first tank into the second tank through a second water outlet pipe.

Abstract: There is provided an ice making method capable of reducing the required number of gyrations of a gyration member used for making ice to have a high level of transparency and determining a point in time at which ice is to be released. The ice making method for making highly transparent ice by revolving a gyration member provided in a tray member in which water is put such that a plurality of dipping members, on which ice is generated or from which generated ice is released, are immersed, wherein a method for driving the gyration member in making ice to be supplied to a user and a method for driving the gyration member in making ice to be used for generating cold water are different in order to reduce the number of gyrations of the gyration member.

Abstract: There is provided an ice making method capable of forming ice to an intended level although a sensing unit configured to sense whether or not a formation of ice has reached the intended level malfunctions. The ice making method includes: an ice making initiation step S100 of forming ice by an ice formation unit; an ice release time determining step S200 of determining a point in time at which ice is to be released in consideration of a signal from a detection unit for detecting whether the formation of ice has reached an intended level and an ice making lapse time which has lapsed after the formation of ice was initiated by the ice formation unit; and an ice releasing step S300 of releasing the formed ice when a point in time at which ice is to be released is determined in the ice releasing time determining step.

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.