Abstract: A washing machine is provided. The washing machine includes an input shaft, configured to supply a rotary power to a rotation part for rotating washings; a motor, configured to rotate in a forward and backward direction and served as a power source of the rotation part; a transmission arranged between an output shaft of the motor and the input shaft of the rotation part. The transmission includes a transformable driving side pulley unit disposed on the output shaft; a transformable driven side pulley unit disposed on the input shaft; a driving belt for transferring power between the pulley unit. The driving side pulley unit/driven side pulley unit is directly installed on the output shaft/input shaft by locating each end of the output shaft/input shaft at a movable pulley and a fixed pulley respectively, so that the driving side pulley unit/driven side pulley unit rotates integrally with the output shaft/input shaft.

Abstract: Disclosed is a purification device, including a case part having an internal space for accommodating an article; and a purification unit disposed in the internal space. The purification unit includes: a flow path provided with a flow inlet and a flow outlet which are in communication with the internal space; a fan enabling air to circulate between the flow path and the internal space; an ozone generating device generating ozone from air; a cover covering the ozone generating device; a supply line taking air from the internal space through an intake port and supplying the air to the ozone generating device; and a guide-in line guiding the ozone generated by the ozone generating device into the flow path. The intake port is exposed outside of the cover to the internal space.

Abstract: A washing machine is provided. The washing machine includes an input shaft, configured to supply a rotary power to a rotation part for rotating washings; a motor, configured to rotate in a forward direction and backward direction and served as a power source of the rotation part; and a transmission arranged between an output shaft of the motor and the input shaft of the rotation part. The transmission includes a transformable driving side pulley unit disposed on the output shaft; a transformable driven side pulley unit disposed on the input shaft; and a driving belt for transferring power between the pulley unit and the driven side pulley units. The driving side pulley unit/driven side pulley unit is directly installed on the output shaft/input shaft by locating each end of the output shaft/input shaft at a movable pulley and a fixed pulley respectively, so that the driving side pulley unit/driven side pulley unit rotates integrally with the output shaft/input shaft.

Abstract: A washing machine is provided. The washing machine adopts an induction motor to achieve efficient operation as that achieved by using a frequency converter. The washing machine includes: an input shaft configured to supply rotation power to a rotation part that rotates washings; an induction motor, configured to rotate in a forward direction and a backward direction and served as a power source of the rotation part; a transmission-arranged between an output shaft of the induction motor and the input shaft of the rotation part. The transmission is configured to change speed of the induction motor by decreasing a reduction ratio along with startup of the induction motor.

Abstract: A washing machine includes a washing machine body provided with a window portion at a front plate; an outer drum arranged in the washing machine body and having at least a transparent area formed by a transparent member at a portion corresponding to the window portion; a dewatering drum rotatably arranged in the outer drum; a motor configured to rotate to drive the dewatering drum; and a drum cleaning unit arranged between the outer drum and the dewatering drum and disposed at a position corresponding to the window portion and the transparent area and capable of abutting against an outer surface of the dewatering drum.