The present disclosure relates to a washing machine configured to rotate a cylindrical drum formed by processing a metal sheet about a horizontal axis. The drum includes a lifter, formed by processing the metal sheet, respectively provided at a plurality of points spaced along a circumferential direction, when viewed from a front side. The lifter includes a front lifter which is formed by protruding the metal sheet into the drum, and pressurized to be extended in a longitudinal direction of the drum, and a rear lifter disposed in a rear side of the front lifter. The rear lifter is disposed to form a certain phase angle with respect to the front lifter.

A drum washing machine includes a tub; a drum rotatably arranged in the tub; an agitator rotatably arranged in the drum and having a water spray hole; a drive in transmission connection with the drum via a main shaft which transmits a torque of the driver to the drum; a planetary gear assembly in transmission connection with the main shaft and the agitator and transmitting a torque of the main shaft to the agitator; and a water supply device in communication with one of the tub and a water source as well as the agitator respectively, supplying water in the tub or the water source to the agitator, and spraying the water into the drum through the water spray hole.

An apparatus, method and kit for use in the treatment of substrates with a solid particulate material, said apparatus comprising a housing having mounted therein a rotatably mounted drum having an inner surface and an end wall and access means for introducing said substrates into said drum, the drum preferably having and elongate protrusion (1) located on said inner surface of said drum, wherein ⋅ (a) said drum comprises storage means for storage of said solid particulate material; and ⋅ (b) said drum comprises a first collecting flow path to facilitate flow of said solid particulate material from the interior of said drum to said storage means when said drum rotates in a first collecting direction, characterised in that said drum comprises a second collecting flow path to facilitate flow of said solid particulate material from the interior of said drum to said storage means when said drum rotates in a second collecting direction, wherein said second collecting direction is in the opposite rotational direction to said first collecting direction, and wherein said first collecting flow path and said second collecting flow path are different flow paths.

Aspects relate to a drum (10) for rotatably mounting in an apparatus for use in the treatment of substrates with a solid particulate material; a method of treating a substrate comprising agitating the substrate in a drum (10); and a kit for converting an apparatus to comprise the drum (10). The drum has an inner surface (15) and an end wall (2) and access means (70) for introducing said substrates into said drum, wherein said drum (10) comprises: •(a) storage means (4) for storage of said solid particulate material, wherein at least part of said storage means is or comprises at least one cavity located in said end wall (2) of said drum (10); and•(c) a dispensing aperture (12) for dispensing solid particulate material from said storage means (4) into the interior of said drum (10), wherein said dispensing aperture (12) is comprised in said end wall (2) of said drum, characterised in that said drum (10) comprises a valve (6) that is actuatable between a closed position and an open position, wherein when said valve (6) is in said closed position said solid particulate material is prevented from passing through said dispensing aperture (12) and when said valve (6) is in said open position said solid particulate material is permitted to pass through said dispensing aperture (12).

Disclosed are a lifter having an improved structure to improve washing performance and a washing machine having the lifter. The washing machine includes a drum and a lifter coupled to the inside of the drum, wherein the lifter is provided in the form of a closed curve in which a space is formed at a central portion thereof.

A laundry treating apparatus having a tub, a drum rotatably mounted inside the tub, at least one electrical powered element mounted in the drum, a wireless power transmitter unit and a wireless power receiver unit. The wireless power receiver unit supplies power to the electrical powered element.

A laundry treating apparatus includes: a drum and a lifter that is disposed at an inner circumferential surface of the drum, that revolves, and that includes a frame cover and a lifter frame including (i) a frame base coupled to the inner circumferential surface of the drum and including a seating groove provided along a circumference of the frame base, (ii) a frame upper plate spaced apart from the frame base, and (iii) a frame sidewall connecting the frame upper plate to the frame base. The frame cover includes a cover upper plate and a cover sidewall having a lower end mounted on the seating groove to couple to the frame base and an upper end connected to the cover upper plate. A drain hole is defined at the seating groove and provides fluid communication between an upper surface and a lower surface of the frame base.

A laundry treating apparatus includes: a drum and a lifter that is disposed at an inner circumferential surface of the drum, that revolves, that includes a frame cover and a lifter frame including (i) a frame base coupled to the inner circumferential surface and including a seating groove provided along a circumference of the frame base, (ii) a frame upper plate spaced apart from the frame base in a direction toward a center of the drum, and (iii) a frame sidewall connecting the frame upper plate to the frame base. The frame cover includes a cover upper plate and a cover sidewall having (i) a lower end mounted on the seating groove to couple to the frame base and (ii) an upper end connected to the cover upper plate. A spacing rib providing a space between the cover sidewall and the frame sidewall protrudes from the seating groove.

A laundry treating apparatus includes: a drum and a lifter that is disposed at an inner circumferential surface of the drum, that revolves, and that includes a frame cover and a lifter frame including (i) a frame base coupled to the inner circumferential surface and including a seating groove provided along a circumference of the frame base, (ii) a frame upper plate spaced apart from the frame base toward a center of the drum, (iii) a frame sidewall connecting the frame upper plate to the frame base, and (iv) a pair of insertion protrusions that protrude from an inner surface of the lifter frame. A pair of mounting slots are defined in the drum such that the pair of insertion protrusions are inserted into the drum through the pair of mounting slots to couple the lifter frame to the inner circumferential surface of the drum.

A drum washing machine implements a control method, allowing a tub of the drum washing machine to be easily cleaned. The method includes supplying washing water during a first water supplying step to the interior of the tub while a drum rotatably supported in the tub rotates at a water-supplying RPM. A first wash step is executed following completion of the first water supplying step, and includes accelerating rotation of the drum from the water-supplying RPM to a first-wash RPM to that create a circulatory flow in which the washing water falls from the top of opposite ends of the tub while circulating along the inner circumferential surface of the tub due to the rotational power of the drum. A wash draining step is started during the first wash step, and includes turning on the drain pump and controlling the amount of the washing water in the tub.