Patent ID: 7685829

Claim:
A device for generating a current of humid air, the device comprising: a source of compressed air to generate an air current in a tubing arrangement, a source of steam for providing hot water vapor, a mixer for introducing the water vapor into the air current, a water separator comprising a water condenser that can be thermostated to cool the humid air coming from the mixer to below a dew point temperature to generate saturated humid air having a defined temperature, a discharger for discharging the humid air, the discharger comprising a tube area downstream of the water separator, the tube area having a temperature adjusting apparatus adapted to heat the humid air coming from the water separator to above the defined temperature to achieve a relative humidity of not less that 80% in the discharged humid air, and a pressure control apparatus which comprises at least one pressure sensor for registering the pressure in the tube area and an adjuster for influencing a supply of compressed air from the compressed air source in accordance with a deviation of an actual pressure from a target pressure in the tube area.