Patent ID: 7131440

Claim:
Inhalation therapy apparatus comprising: a nebuliser chamber in which with the aid of an atomizer nozzle an aerosol is produced, a connecting piece through which the aerosol is discharged from the nebuliser chamber, an air supply duct through which the surrounding air enters the nebuliser chamber, and an inlet valve which is arranged at one end of the air supply duct and which comprises at least one inlet opening and one valve element closing the inlet opening and which is arranged in the air supply duct in such a way that an underpressure in the nebuliser chamber moves the valve element in order to free the inlet opening, wherein the air supply duct is provided with a limiter section which restricts the movement of the valve element in such a way that the freeing of the inlet opening is essentially proportional to the underpressure only up to a threshold value of the underpressure in the nebuliser chamber, and the limiter section is constructed to be connected to the air supply duct.