Disclosed is a method for controlling a laundry treating apparatus including an efficiency increasing operation and an efficiency maintaining operation, wherein the efficiency increasing operation includes a first efficiency increasing operation, wherein the controller controls the first driver such that an RPM of the drum corresponds to a first drum RPM and controls the second driver such that an RPM of the fan corresponds to a first fan RPM to perform a first efficiency increasing process, and a second efficiency increasing operation, wherein, after the first efficiency increasing operation, the controller controls the first driver such that the RPM of the drum corresponds to the first drum RPM and controls the second driver such that the RPM of the fan corresponds to a second fan RPM higher than the first fan RPM to perform a second efficiency increasing process.

A method of operating a laundry treating appliance for treating laundry according to a treating cycle of operation. The laundry treating appliance comprises a treating chamber for receiving the laundry that is selectively accessible through a door movable between opened and closed positions. The method comprises determining at the end of a laundry treating cycle whether the door has been opened and subsequently reclosed and reducing humidity in the treating chamber after the determination that the door has been reclosed.

A dryer includes a main body having an opening for an object to be dried to be entered therethrough, a drum arranged inside the main body for accommodating the object entered through the opening, a door opening or closing the opening, an input device configured to receive an input to perform a dehumidification mode, and output a control signal corresponding to the received input, a heat exchanger heating air supplied to the drum, a fan forming a flow of air along a fluid path connected to the drum through the heat exchanger from outside of the main body, and a controller configured to control the fan to introduce air from the outside of the main body to flow along the fluid path in response to the control signal received from the input device.

A dryer includes a main body; a drum in the main body, the drum being rotatable and configured to receive an object to be dried by the dryer; a driving motor configured to rotate the drum; an input module configured to receive a command to perform a dry mode or a dehumidification mode from a user; a heat exchanger in the main body; and a controller configured to: in response to receiving the command to perform the dry mode, control the driving motor to rotate the drum at a first rotation speed, and in response to receiving the command to perform the dehumidification mode, control the driving motor to rotate the drum at a second rotation speed different from the first rotation speed.

Disclosed herein is a method of controlling a laundry treating apparatus, if a user selects a uniform course, including performing a preheating operation of a heater to generate steam, performing a first cooling operation to operate a blower unit and a moving hanger after the preheating operation has been terminated, performing a steam operation to operate the blower unit and a steam unit and to circulate steam to a treating chamber after the first cooling operation has been terminated, performing a standby operation to operate the blower unit after the steam operation has been terminated, performing a second cooling operation to operate the blower unit after the standby operation has been terminated, and performing a drying operation to operate the blower unit and a heat pump unit and to provide heat to the treating chamber to dry the treating chamber after the second cooling operation has been terminated.

A dryer according to the disclosure may detect current flowing through a motor for rotating a drum, detect humidity of a drying material accommodated in the drum, compare the detected humidity to a plurality of pieces of reference humidity and compare the detected current to a plurality of pieces of reference current to obtain a drying load, control a revolutions per minute (rpm) of the motor, a frequency of a compressor provided in a heat pump, and a degree of superheat of an evaporator provided in the heat pump based on the drying load, perform a drying process, detect humidity of the drying material while the drying process is performed, and finish the drying process in response to the detected humidity determined to be target humidity.

A laundry appliance includes a drum rotatably mounted within a cabinet and defining a chamber configured for receiving a load of clothes, a door pivotally mounted to the cabinet for providing selective access to the chamber, and a user interface for controlling operation of the laundry appliance. A controller is configured to initiate a self-clean cycle and to automatically commence a drying cycle at the conclusion of the self-clean cycle. The drying cycle is based on operation data associated with the drying cycle, such as a predetermined period of time to complete drying or based on a predetermined final humidity of air exhausted from the chamber during the drying cycle.

A method controls a laundry treatment apparatus that includes a drum in which a target object to be dried is put, a drum motor to drive the drum, an air duct to guide air into the drum, a heat pump provided in the air duct to dehumidify and heat the air, a blower fan to move the air of the air duct, and a blower motor to drive the blower fan. The method includes a drum driving step for repeatedly driving the drum by accelerating and decelerating the drum, a steam supply step for supplying or stopping steam for a predetermined time during execution of the drum driving step, and an air supply step for circulating internal air of the drum during execution of the drum driving step. The circulation of the internal air of the drum is stopped during execution of the steam supply step.

A laundry appliance includes a blower that selectively delivers process air through an airflow path. A rotating drum defines a portion of the airflow path. The rotating drum is attached to a drive shaft that rotates the rotating drum about a rotational axis. The blower and the drive shaft are operated by a common motor. A heater selectively delivers heat to the airflow path. The heater defines an energizing state when a motor current delivered to the common motor is within a predetermined motor current range that is indicative of the common motor operating. The heater defines an idle state when the motor current is outside of the predetermined motor current range.

A dryer which comprises: a communication interface; a drum; a driving motor to drive the drum; a hot wind supplying device to supply hot air to the drum; a sensing device that is self-generating whereby power is generated according to a movement of the sensing device as the drum rotates while the drum is being driven by the driving motor, and transmitting, through the communication interface, a harvester voltage value obtained in association with the sensing device and sensing data sensed by the sensing device; and a processor configured to acquire the sensing data from the sensing device, the sensing data acquired being based on the harvester voltage value which is transmitted from the sensing device while the driving motor is being controlled based on an input of a user, and control an operation of the hot wind supplying device based on the acquired sensing data.