A method for controlling a laundry treating apparatus is disclosed. The apparatus comprises a main-drum and an auxiliary-drum selectively mounted on or separated from the main-drum. The method may comprise: a main laundry quantity detection operation for detecting a laundry quantity in the main-drum via rotation of a pulsator disposed in the main-drum; and an auxiliary laundry quantity detection operation for detecting a laundry quantity in the auxiliary-drum by driving the main-drum, wherein the auxiliary laundry quantity detection operation is performed based on the main laundry quantity detected in the main laundry quantity detection operation.

A control method of a laundry treating apparatus includes rotating a drum at a reference rotational speed that is lower or higher than a resonance rotational speed of the laundry treating apparatus; measuring the maximum displacements of tub front and rear surfaces and a phase difference between the maximum displacements during the rotation of the drum at the reference rotational speed; determining a front unbalance (UB) mass located in a drum front area, a rear UB mass located in a drum rear area, and an angle between the UB masses based on the maximum displacements and the phase difference; and accelerating a drum rotational speed to a target rotational speed that is higher than the reference rotational speed and the resonance rotational speed, when the front and rear UB masses are in a preset allowable mass range and an angle between the UB masses is in an allowable angle range.

A laundry treating apparatus includes a cabinet, a tub, a drum rotatably disposed inside the tub, an elastic member to connect, to the cabinet, a portion of the tub body above a horizontal line passing through a rotation center of the drum; first and second dampers to connect, to the cabinet, a portion of the tub body located below the horizontal line; and a third damper to connect, to the cabinet, a portion of the tub body located below the horizontal line. A first location is defined as one of left and right portions in the tub body relative to a vertical line passing through the rotation center of the drum, while a second location is defined as the other portion. The first damper and second damper are disposed at the first location. The third damper is disposed at the second location.

A laundry treating appliance for treating a laundry load according to at least one cycle of operation and a method of operating a laundry treating appliance to control the rotation of the drum to distribute the laundry load with an acceptable amount of imbalance such that the laundry treating appliance may be operated in an effective and efficient manner.

A clothes treatment apparatus and a method for controlling a clothes treatment apparatus are provided. The method may include feeding heated hot air to clothes or other items received in a drum, and dehydrating the clothes or other items by performing a first rotation cycle for rotating the drum at a first RPM for a predetermined period of time. The first RPM may be a RPM that allows a centrifugal force applied to the clothes or other items during rotation of the drum to exceed gravity.

Disclosed herein is a washing machine having a driving motor for generating a rotational force, a clutch for selectively transmitting the rotational force to the spin basket and the pulsator, a sensor and a position indicating member for detecting the rotational speed of the spin basket.

A method for operating a washing machine appliance includes flowing a volume of liquid into a tub, agitating articles within the tub for a first period, the tub containing the volume of liquid, and measuring movement of the tub during agitation of the articles within the tub, the tub containing the volume of liquid. The movement is measured using an accelerometer and a gyroscope. The method further includes agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold, the tub containing the volume of liquid. The method further includes draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold, and spinning a basket after draining liquid from the tub.

A method for operating a washing machine appliance includes flowing a volume of liquid into a tub, and agitating articles within the tub for a first period and using a first agitation profile, the tub containing the volume of liquid. The method further includes measuring movement of the tub during agitation of the articles within the tub, wherein the step of measuring movement occurs after agitating articles within the tub for the first period and for an intermediate measurement period and using an intermediate agitation profile, and wherein the intermediate agitation profile is different from the first agitation profile. The method further includes agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold. The method further includes draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold.

A method for operating a washing machine appliance includes flowing a volume of liquid into a tub, agitating articles within the tub for a first period, the tub containing the volume of liquid, and measuring movement of the tub during agitation of the articles within the tub, the tub containing the volume of liquid. The method further includes agitating articles within the tub for a second period when the final measured movement is greater than an out-of-balance movement threshold, the tub containing the volume of liquid. The method further includes draining liquid from the tub when the final measured movement is less than the out-of-balance movement threshold, and spinning a basket after draining liquid from the tub.

A method for operating a washing machine appliance includes flowing a volume of liquid into the tub, and agitating articles within the tub for a first period, the tub containing the volume of liquid. The method further includes draining a first portion of the volume of liquid from the tub, the first portion less than the volume flowed into the tub, wherein a sum of the first portion and a second portion of the volume of liquid remaining in the tub equals the volume. The method further includes measuring movement of the tub during agitation of the articles within the tub after draining the first portion of the volume of liquid from the tub, wherein the step of measuring movement occurs after agitating articles within the tub for the first period and for an intermediate measurement period.