Device for generating droplets (I; II; III; IV; V; VI; VII; VIII) comprising: - a hollow body (1; 101; 201; 301; 401; 501; 601) delimiting a nebulization chamber, - means for generating droplets comprising a nebulization nozzle (20; 120; 220; 320; 420; 520; 620; 720), forming a liquid inlet member, said nebulization nozzle being provided with at least one liquid inlet orifice (23 623) and at least one liquid outlet orifice (21; 621), said nebulization nozzle being capable of generating a jet of liquid inside said nebulization chamber along a generation path, the means for generating droplets further comprising a piezoelectric element, provided opposite said outlet orifice of said nozzle, capable of emitting acoustic waves into said liquid to generate droplets from said jet of liquid, - ventilation means (3; 103; 203; 303; 403; 503; 603; 703) capable of generating a gas flow intended to drive at least part of said liquid into the nebulization chamber, these ventilation means comprising a ventilation member and a ventilation channel (4; 104; 204; 304; 404; 504; 604; 704), extending from said ventilation member and opening into the nebulisation chamber, said device being a nebulization device (I; II; III; IV; V; VI; VII; VIII) and further comprising - an intermediate passage (44; 144; 244; 344; 444; 544; 644; 744), the gas flow generated by the ventilation member being able to flow in the intermediate passage, along a first path of flow different from the generation path, - return means capable of returning the gas flow coming from the intermediate passage radially towards the center of the nebulization chamber, along a second flow path substantially identical to the generation path, the intermediate passage being delimited by facing walls belonging respectively to an upstream neck, provided in the vicinity of the nebulization nozzle, and to a downstream barrel of cross section less than that of the collar. - a hollow body (1; 101; 201; 301; 401; 501; 601) delimiting a nebulization chamber, - means for generating droplets comprising a nebulization nozzle (20; 120; 220; 320; 420; 520; 620; 720), forming a liquid inlet member, said nebulization nozzle being provided with at least one liquid inlet orifice (23 623) and at least one liquid outlet orifice (21; 621), said nebulization nozzle being capable of generating a jet of liquid inside said nebulization chamber along a generation path, the means for generating droplets further comprising a piezoelectric element, provided opposite said outlet orifice of said nozzle, capable of emitting acoustic waves into said liquid to generate droplets from said jet of liquid, - ventilation means (3; 103; 203; 303; 403; 503; 603; 703) capable of generating a gas flow intended to drive at least part of said liquid into the nebulization chamber, these ventilation means comprising a ventilation member and a ventilation channel (4; 104; 204; 304; 404; 504; 604; 704), extending from said ventilation member and opening into the nebulisation chamber, said device being a nebulization device (I; II; III; IV; V; VI; VII; VIII) and further comprising - an intermediate passage (44; 144; 244; 344; 444; 544; 644; 744), the gas flow generated by the ventilation member being able to flow in the intermediate passage, along a first path of flow different from the generation path, - return means capable of returning the gas flow coming from the intermediate passage radially towards the center of the nebulization chamber, along a second flow path substantially identical to the generation path,