Abstract: A clothes dryer comprises a drum, a weight detection sensor, a moisture content detection sensor, and a controller. The controller is configured to determine a category for the drying item among a plurality of categories based on the weight of the drying item detected by the weight detection sensor and the residual moisture content information about the drying item obtained by the moisture content detection sensor at a first predetermined time after an initial drying cycle is initiated according to an initial control condition, monitor a reduction state in the residual moisture content information about the drying item obtained by the a moisture content detection circuit based on a reference time and a moisture content threshold defined corresponding to the determined category to determine a drying level for the drying item, and then initiate a main drying cycle according to the control condition corresponding to the determined drying level.

Abstract: A dryer including a main body which includes a user interface; a drum to accommodate a material to be dried; a motor configured to provide a rotation force to the drum; a heat pump device including a compressor, and configured to heat air to be supplied to the drum; an electrode sensor configured to output a pulse when contacting the drying material; a current sensor configured to output a sensed value corresponding to a magnitude of current flowing through the motor; and a controller configured to receive a drying course selected through the user interface, and output a control signal to control the motor and the compressor.

Abstract: A clothes dryer is disclosed. The clothes dryer includes a rotatably disposed drum, a heat pump system including a compressor configured to compress a refrigerant and a condenser configured to condense the refrigerant, a heater configured to heat air supplied to the interior of the drum, a first temperature sensor configured to detect a temperature of air passing through the interior of the drum, a second temperature sensor configured to detect a temperature of the compressor, and a processor configured to control an operation of the compressor on the basis of the temperature of the air passing through the interior of the drum detected by the first temperature sensor and control an operation of the heater on the basis of the temperature of the compressor detected by the second temperature sensor.

Abstract: A dryer includes a drum receiving an object to be dried, a first sensor configured to sense a dry state of the object to be dried contained in the drum, a heater configured to heat air supplied into the drum, a blower including a fan forming a flow of air passing through the inside of the drum, a second sensor configured to sense a temperature of air discharged from the drum, and a processor configured to control, when a user input selecting a specific course is received, the drum, the heater, and the blower to perform a dry cycle, to control a rotation direction of the drum on the basis of a dry state of the dry object sensed by the first sensor when the dry cycle is started, and to control termination of the dry cycle on the basis of the temperature of air sensed by the second sensor.

Abstract: A clothes dryer is disclosed. The clothes dryer includes a rotatably disposed drum, a heat pump system including a compressor configured to compress a refrigerant and a condenser configured to condense the refrigerant, a heater configured to heat air supplied to the interior of the drum, a first temperature sensor configured to detect a temperature of air passing through the interior of the drum, a second temperature sensor configured to detect a temperature of the compressor, and a processor configured to control an operation of the compressor on the basis of the temperature of the air passing through the interior of the drum detected by the first temperature sensor and control an operation of the heater on the basis of the temperature of the compressor detected by the second temperature sensor.