To solve the problem that water splashes toward the outer part of a washing tub when the water hits clothes placed in the upper part of the washing tub in a case where the water is supplied into the washing tub in starting washing or rinsing in a washing machine, and that a lump of powder detergent is stored to cause clogging of a water supply nozzle or mold since the powder detergent is left inside the water supply nozzle in a lump state when water is supplied without sufficiently dissolving the powder detergent in starting washing.
The water supply nozzle includes: a water inlet and a water outlet which is opened to have an oblong shape where the longitudinal length is more than three times as long as the width; a first projection arranged on the inner side of the wall surface in a path between the water inlet and the water outlet and projecting in a substantially vertical direction relative to a water flow direction; and a second projection arranged on the inner side of the wall surface facing the wall surface with the first projection arranged thereon in the downstream of the first projection.
IWASE KAZUHIRO
ISHII TETSUO
KOBAYASHI TOMOO
NAKAHATA SHINSUKE
NIPPON KENTETSU CO LTD
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka