A dish-washing machine having: a washtub, in which there is housed at least one lower dish rack and one upper dish rack; and a sprinkler system, which comprises a lower sprinkler device, configured for spraying water upwards, towards the lower rack, and at least one of an intermediate sprinkler device, configured for spraying water upwards, towards the upper rack, and an upper sprinkler device, configured for spraying water downwards, towards the upper rack, the lower sprinkler device and the at least one of the intermediate sprinkler device and the upper sprinkler device comprising respective rotary sprinklers, the at least one of the intermediate sprinkler device and the upper sprinkler device being supplied via a canalization having at least one first portion and one second portion, and possibly one third portion, which extend substantially at a lower wall, a rear wall, and an upper wall of the tub, respectively, wherein the sprinkler system comprises at least one further stationary sprinkler device within the tub, which is configured for spraying water towards one of the lower rack and the upper rack and is in fluid communication with a duct (14, 15) of the canalization, wherein the further stationary sprinkler device has a hollow body that is connected in constant fluid communication with said duct of the canalization, wherein at least one of the further stationary sprinkler device and said duct of the canalization has deflector means (35, 36) in a fixed, non switchable position, for deflecting part of the flow of liquid that flows in said duct towards the inside of the further stationary sprinkler device, i.e., towards an inlet of the hollow body and a corresponding outlet of said duct which are in fluid communication with one another, and wherein the deflector means (35, 36) comprise a deflector wall, which is downstream of the inlet of the hollow body and extends within said duct obstructing it partially, the deflector wall extending generally in a transverse direction with respect to said duct. a washtub, in which there is housed at least one lower dish rack and one upper dish rack; and a sprinkler system, which comprises a lower sprinkler device, configured for spraying water upwards, towards the lower rack, and at least one of an intermediate sprinkler device, configured for spraying water upwards, towards the upper rack, and an upper sprinkler device, configured for spraying water downwards, towards the upper rack, the lower sprinkler device and the at least one of the intermediate sprinkler device and the upper sprinkler device comprising respective rotary sprinklers, the at least one of the intermediate sprinkler device and the upper sprinkler device being supplied via a canalization having at least one first portion and one second portion, and possibly one third portion, which extend substantially at a lower wall, a rear wall, and an upper wall of the tub, respectively, wherein the sprinkler system comprises at least one further stationary sprinkler device within the tub, which is configured for spraying water towards one of the lower rack and the upper rack and is in fluid communication with a duct (14, 15) of the canalization, wherein the further stationary sprinkler device has a hollow body that is connected in constant fluid communication with said duct of the canalization, wherein at least one of the further stationary sprinkler device and said duct of the canalization has deflector means (35, 36) in a fixed, non switchable position, for deflecting part of the flow of liquid that flows in said duct towards the inside of the further stationary sprinkler device, i.e., towards an inlet of the hollow body and a corresponding outlet of said duct which are in fluid communication with one another, and wherein the deflector means (35, 36) comprise a deflector wall, which is downstream of the inlet of the hollow body and extends within said duct obstructing it partially, the deflector wall extending generally in a transverse direction with respect to said duct.