Disclosed is a clothing treatment apparatus including: a cabinet; a tub disposed inside the cabinet and providing a space in which water is stored; a drum rotatably provided inside the tub; and a pump having a supply port connected to the tub, and a discharge port connected to an outside of the cabinet. The pump includes: a housing; a first chamber disposed inside the housing and communicating with the supply port; a second chamber disposed inside the housing and communicating with the discharge port; a first partition for separating the first chamber and the second chamber; a chamber communicating hole formed in the first partition and communicating the first chamber and the second chamber; an impeller rotatably provided in the second chamber; and a second partition located in the first chamber and extending downward from a first surface of the housing, which provides an upper boundary of the first chamber.

An aspect of the present disclosure is to provide a washing machine that detects contamination of water due to a dye and prevents contamination of laundry due to the dye. The washing machine includes a tub; a drum configured to be rotatable inside of the tub; a detergent supplier configured to supply a detergent to the tub; a water supplier configured to supply a water to the tub; an optical sensor provided under the tub, wherein the optical sensor includes a light emitting element and a light receiving element configured to selectively receive a plurality of visible rays having different wavelengths and an infrared ray among a light emitted from the light emitting element; and a controller configured to control the water supplier to supply the detergent and the water to the tub and rotate the drum during a washing. In addition, the controller may reduce the washing time based on the sum of the received intensities of the plurality of visible rays and the received intensity of the infrared ray.

The invention provides an apparatus (8) for cleaning cloth which includes a body (10) with an aperture, a closure, which is engageable with the aperture, a tub (26) with an outer shell and a cylindrical Inner cavity which corresponds with the aperture, a drum (28), which is positioned inside the cylindrical inner cavity (54) and which includes a wall, with an inner surface, an outer surface and a plurality of perforations (62) in the wait, a base (64) and an opposing mouth (66) which registers with the aperture, a drive means (30) which is connected to or engaged with the drum and which allows rotational movement of the drum about an axis, a generator (32) and an electrical power supply (78), inside the body, wherein the power supply is adapted to provide pulsating electrical power to the generator and wherein the generator is actuable to produce pulses of microwave energy at least into part of the drum.

A washing machine capable of determining an accurate state of a water supplier during a water supply course includes a tub; a drum rotationally arranged in the tub; a driving motor configured to rotate the drum; a water supplier configured to supply water into the tub; a water level sensor configured to measure a water level in the tub; and a controller configured to control the driving motor to perform a first weight detection course before water supply is started, and control the driving motor to perform a second weight detection course based on the water level in the tub being less than a preset water level when a predetermined time has elapsed after the water supply into the tub is started.

A washing machine that performs a washing course by heating wash water and a control method thereof are provided. The method includes supplying wash water up to a wash water level for generation of steam such that a portion of laundry received in an inner tub is saturated by the wash water. The wash water level may be above a bottom surface of the inner tub and below a wash water level for main washing. The method then includes heating the wash water to a first set temperature and driving a washing heater to generate steam from the wash water, and supplying the generated steam to the inner tub, and then supplying the wash water up to the wash water level for main washing, and driving the washing heater again to heat the wash water to a second set temperature, the second set temperature being lower than the first set temperature.

A method is provided for controlling a laundry treating apparatus. The method may include controlling the drum to accelerate the drum to rotate at a first speed, applying a brake to stop the drum, accelerating the drum to a second speed, sensing a current being applied to the motor while the drum is accelerated to the second speed, and determining a laundry amount based on the sensed current.

A method for controlling a laundry treating apparatus is disclosed. In a washing step, the presence or absence of entangled laundry is detected using at least one of a vibration value of a drum, a current value applied to a drive unit, and an RPM value of the drum, and a step of untangling the entangled laundry is performed using at least one of a vibration value of a drum, a current value applied to a drive unit, and an RPM value of the drum.

A laundry treating apparatus includes a cabinet, a tub, a drum, a rotator including a bottom portion positioned on a bottom surface of the drum, a pillar protruding from the bottom portion toward an open surface of the drum, and blades spaced apart from one another along a circumferential direction of the pillar and inclined with respect to a longitudinal direction of the pillar, a water supply, a sprayer, a drainage, and a controller for controlling rotation of the drum and the rotator and operation of the water supply and the drainage. During a rinsing operation, the drum and the rotator rotate in a same direction while water is continuously sprayed through the sprayer and the drainage is closed.

A laundry treating apparatus includes a tub, a drum rotatably disposed inside the tub, a rotator that is rotatably disposed on a bottom surface of the drum and includes a pillar extending inside the drum and a plurality of blades spaced apart from each other along a circumferential direction of the pillar and inclined with respect to a longitudinal direction of the pillar, a motor for driving the drum and the rotator, and a controller that controls operation of the motor. A method for controlling the apparatus includes sensing an amount of clothes in the drum, sensing a washing load of the clothes including a moisture content from water supplied into the tub, and sensing a cloth material of the clothes. When the washing load corresponds to a normal washing load in the first cloth material sensing operation, a first washing process is performed according to the washing load.

A method for controlling a laundry treating apparatus includes a dry cloth sensing operation of sensing an amount of clothes put into a drum, a wet cloth sensing operation of sensing a washing load based on a moisture content of the clothes by supplying water into a tub, and a cloth material sensing operation of sensing a cloth material of the clothes put into the drum based on a rpm gap and a motor-constrained state where rotation of a motor is restricted. The rpm gap is a difference between a target rpm of a rotator in the drum and an actual rpm of the rotator.