A method of drying laundry in a laundry treating appliance having a treating chamber in which the laundry is received for drying comprises moving the treating chamber to redistribute the laundry, supplying air to the treating chamber to define a supply air flow, exhausting the supplied air from the treating chamber to define an exhaust air flow, heating the air supplied to the treating chamber by actuating a heater at full output to define a first heating phase and then cycling the heater ON/OFF to define a second heating phase.

A heat pump clothes dryer comprising a circulating air path consisting of a drying drum and a drying air path for circularly flowing drying air; and a heat pump system consisting of an evaporator, a throttling device, a condenser and a compressor successively connected end to end for circularly flowing a refrigerant medium. The condenser and the evaporator are disposed on the drying air path, and perform heat exchange with the drying air. The compressor has independent suction compression chambers, each suction compression chamber being switchably connected in series or in parallel. When the dryer starts drying in a low-temperature environment, the suction compression chambers of the compressor operate in a parallel state, so that the air displacement of the compressor is increased to improve the flowing activity of the refrigerant medium in the heat pump system, so as to avoid occurrence of frosting of the evaporator.

A control method of a laundry treatment apparatus is disclosed which includes a course setting procedure receiving a control command including RPM control data of an impeller, RPM control data of a compressor or opening degree control data of an expansion valve, a hot air supply procedure for supplying heated air to a drum through control of the impeller, compressor and expansion valve, a temperature measurement procedure measuring temperature of air introduced into the drum during execution of the hot air supply procedure, a first control procedure for controlling the impeller, compressor and expansion valve based on the control command when the measured temperature is equal to or higher than a reference temperature, and a second control procedure controlling the impeller, compressor and expansion valve based on a control command different from the control command set in the course setting procedure when the measured temperature is lower than the reference temperature.

A dryer appliance and a method of operating the dryer for a warming operation is provided. The dryer appliance includes an air handler to urge the flow of air through a chamber rotatably mounted in a cabinet and a heating assembly for heating the flow of air. A controller controls the heating assembly and the air handler to initiate a warming operation for an article in the chamber. The warming operation includes receiving input parameters for a warming operation and determining a duration of the warming operation from the input parameters. Based on the input parameters and duration of the warming operation a start time is determined and the warming operation is initiated at the determined start time.

A dryer appliance and a method of operating the dryer for a warming operation is provided. The dryer appliance includes an air handler to urge the flow of air through a chamber rotatably mounted in a cabinet and a heating assembly for heating the flow of air. A controller controls the heating assembly and the air handler to initiate a warming operation for an article in the chamber. The warming operation includes receiving input parameters for a warming operation and determining a duration of the warming operation from the input parameters. Based on the input parameters and duration of the warming operation a start time is determined and the warming operation is initiated at the determined start time.

A method of drying laundry in a laundry treating appliance having a treating chamber in which the laundry is received for drying comprises moving the treating chamber to redistribute the laundry, supplying air to the treating chamber to define a supply air flow, exhausting the supplied air from the treating chamber to define an exhaust air flow, heating the air supplied to the treating chamber by actuating a heater at full output to define a first heating phase and then cycling the heater ON/OFF to define a second heating phase.

Provided is a clothes treating apparatus which may include a cabinet defining an outer appearance of the apparatus and having an introduction opening, a clothes receiving device provided in the cabinet and receiving therein clothes through the introduction opening, a circulation passage through which internal air of the clothes receiving device circulates, a heat-exchanging passage connected to the circulation passage to guide external air outside the circulation passage into the circulation passage for heat exchange with the internal air of the circulation passage, and a fan provided at the heat-exchanging passage to generate airflow in the heat-exchanging passage.

A clothes dryer including a drum; a flow passage to guide air inside of the drum to outside of the drum, and then back inside of the drum; a heat pump system to heat the air to flow back inside of the drum, the heat pump system including a compressor, a condenser, an expansion valve, and an evaporator through which refrigerant circulates; and a controller configured to, in response to receiving a command for an anti-freeze mode operation, control the clothes dryer to perform a heating operation in which the compressor is driven for a first period of time, after the compressor is driven for the first period of time, the compressor is stopped for a second period of time, and the driving of the compressor for the first period of time and the stopping of the compressor for the second period of time is repeated a plurality of times.

A clothes dryer may include a drum in which laundry is receivable; a humidity detector to detect a dryness level of the laundry in the drum; and a controller configured to: obtain the dryness level of the laundry in the drum detected by the humidity detector while a first initial drying cycle is performed, determine a weight category of the laundry in the drum from a plurality of weight categories of laundry based on the obtained dryness level, obtain control information based on the determined weight category, and control, according to the obtained control information, a main drying cycle to dry the laundry in the drum after the first initial drying cycle is performed.

A clothes dryer may include a drum in which laundry is receivable; a humidity detector to detect a dryness level of the laundry in the drum; and a controller configured to: obtain the dryness level of the laundry in the drum detected by the humidity detector while a first initial drying cycle is performed, determine a weight category of the laundry in the drum from a plurality of weight categories of laundry based on the obtained dryness level, obtain control information based on the determined weight category, and control, according to the obtained control information, a main drying cycle to dry the laundry in the drum after the first initial drying cycle is performed.