The present disclosure relates to a dishwasher. The dishwasher of the present disclosure includes a tub forming a washing space, a sump disposed below the tub and storing washing water flowing from the tub, a pump configured to supply the washing water stored in the sump to the washing space, and a spray arm configured to discharge the washing water flowing from the pump into the washing space. A channel is formed inside the spray arm to spray the washing water into the washing space or discharge the washing water containing microbubbles into the washing space. The spray arm includes an upper cover and a lower cover coupled to a lower side of the upper cover, a flat surface is formed on a surface facing each other in one of the upper cover and the lower cover, and a pair of inner ribs protruding toward the flat surface to form the channel to be in contact with the flat surface is formed in the other of the upper cover and the lower cover.

A current generated cleaning device in accordance with the present invention comprises: a power source, a conductor, a signal generator controller, a current output head, a current generator module, an inlet module, an outlet module, a self-erected water container, and a vertical support frame, the current generated cleaning device use current generated from the current generator module to perform the cleaning and washing of clothes or objects.

A current generated cleaning device in accordance with the present invention comprises: a power source, a conductor, a signal generator controller, a current output head, a current generator module, an inlet module, an outlet module, a self-erected water container, and a vertical support frame, the current generated cleaning device use current generated from the current generator module to perform the cleaning and washing of clothes or objects.

A current generated cleaning device in accordance with the present invention comprises: a power source, a conductor, a signal generator controller, a current output head, a current generator module, an inlet module, an outlet module, a self-erected water container, and a vertical support frame, the current generated cleaning device use current generated from the current generator module to perform the cleaning and washing of clothes or objects.

A current generated cleaning device in accordance with the present invention comprises: a power source, a conductor, a signal generator controller, a current output head, a current generator module, an inlet module, an outlet module, a self-erected water container, and a vertical support frame, the current generated cleaning device use current generated from the current generator module to perform the cleaning and washing of clothes or objects.

A fine bubble generator disclosed herein may include a body casing having an inlet and an outlet and a first fine bubble generation portion housed in the body casing. The first fine bubble generation portion may include a body portion, a venturi flow path through the body portion, an upstream fitting portion connected to the body portion and substantially fit an inner surface of the body casing, and a downstream fitting portion connected to the body portion downstream of the upstream fitting portion and substantially fit the inner surface of the body casing. A liquid drainage flow path connecting a gap space to the outlet may be disposed in the body casing, wherein the gap space may be defined between the inner surface of the body casing and an outer surface of the body portion and between the upstream fitting portion and the downstream fitting portion.

A fine bubble generator disclosed herein may include a body casing having an inlet and an outlet and a first fine bubble generation portion housed in the body casing. The first fine bubble generation portion may include a body portion, a venturi flow path through the body portion, an upstream fitting portion connected to the body portion and substantially fit an inner surface of the body casing, and a downstream fitting portion connected to the body portion downstream of the upstream fitting portion and substantially fit the inner surface of the body casing. A liquid drainage flow path connecting a gap space to the outlet may be disposed in the body casing, wherein the gap space may be defined between the inner surface of the body casing and an outer surface of the body portion and between the upstream fitting portion and the downstream fitting portion.