Apparatus for producing a spray of droplets of a liquid

Details Apparatus for producing a spray of droplets of a liquid Apparatus for producing a spray of droplets of a liquid

B - Operations, Transporting

05

B

128/71

B05B 5/08 (2006.01) A61M 15/02 (2006.01) B01J 2/04 (2006.01) B05B 5/025 (2006.01) B05B 5/00 (2006.01)

Patent

CA 1275883

APPARATUS FOR PRODUCING A SPRAY OF DROPLETS OF A LIQUID ABSTRACT Apparatus, for example an inhaler, is disclosed in which a spray is formed electrostatically from an outlet 6 to achieve uniform droplet size. The spray is then discharged for its intended use - in the example inhaling. The spray is discharged completely by corona produced by a sharp discharge electrode 16 which is charged to a polarity opposite that of the liquid. In order to prevent the corona from spoiling the formation of the spray itself, the liquid at the outlet 6 is protected by a neutral shield electrode 8. The spray issues through a hole 14 in the shield electrode. The hole is sufficiently small to prevent corona getting through, yet sufficiently large to allow the spray through.

530183

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