Method and device for producing a fragranced air stream

#The invention relates to a method and a device for producing a fragranced air stream for fragrancing rooms, objects or the like.

#A known method for producing a fragranced air stream is described in U.S. Pat. No. 2,410,488. In that case a strip-like fragrance carrier is moved forward and back in the interior of an evaporation shaft, while a stream of fresh air flows through the evaporation shaft.

#In known fragrancing devices, the fragrance is admixed by exposing fragrance gel or fragrance granules in a stream of fresh air. The fragranced fresh-air stream is then either passed directly into a room to be fragranced or supplied to an air-supply or air-conditioning system, so that the fragrance can be dispersed into the rooms connected thereto.

#An embodiment of the invention will be explained hereinafter on the basis of the drawings, wherein:

#FIG. 1 shows a fragrancing device in side view, and

#FIG. 2 shows the fragrancing device according to FIG. 1 in top view.

#At the center of the fragrancing device there is disposed an evaporation shaft 1, which is connected with its lower end to a fresh-air duct 2. The fresh air flowing in according to arrow F passes through a heater 3, which surrounds a portion of fresh-air duct 2 and heats the fresh air flowing therein well above room temperature. To favor evaporation in evaporation shaft 1, the temperature of the fresh air entering evaporation shaft 1 lies between 40 and 80° C., although even higher temperatures are also adjusted in exceptions.

#A wick-like thread 4 is used as fragrance carrier. As illustrated in FIG. 2, it transits evaporation shaft 1 in the direction of arrow T. As yet unwetted fragrance carrier 4 is pulled out of a supply drum 6 by means of an extraction device 5 downstream from evaporation shaft 1, passes through a dosing device 7, then transits evaporation shaft 1 and downstream from extraction device 5 is passed by means of a traction device, not illustrated, into the interior of a waste drum 8.

#Connected to dosing device 7 are in total six fragrance containers 9 to 14 for different fragrances, which are in communication via respective pressure lines 15 with nozzles, not illustrated in more detail, within dosing device 7.