Abstract: The invention concerns a device for spraying particles of dry ice, in particular for cleaning surfaces, comprising a gun (10) for orienting a drive fluid entraining said particles in a first direction, and a spray nozzle (4) for passage of said drive fluid loaded with said particles, said nozzle (4) comprising a neck (6). According to the invention, said device is configured so as to orient the fluid loaded with said particles in at least one other direction upstream of the neck (6) in the direction of flow of the drive fluid.

Abstract: The invention relates to a device for spraying particles of dry ice, notably for the purpose of cleaning surfaces, comprising a spray nozzle (4), allowing the passage of a working fluid carrying said particles, said nozzle (4) having an outlet orifice (5) and comprising a throat (6) and a divergent part (7) said divergent part (7) extending between the throat (6) and the outlet orifice (5) of the nozzle. According to the invention, said divergent part (7) has at least one first stage extending between the throat (6) and an outlet orifice of said first stage (5, 12) and the ratio between the area of the throat (6) and the area of said outlet orifice (5, 12) of the first stage of the divergent part is greater than 0.2.