US 11,779,944 B2
Apparatus and method for generating an aerosol
Per Gerde, Trosa (SE)
Assigned to INHALATION SCIENCES SWEDEN AB, Novum (SE)
Filed by INHALATION SCIENCES SWEDEN AB, Novum (SE)
Filed on Nov. 13, 2020, as Appl. No. 17/97,052.
Application 17/097,052 is a division of application No. 14/906,701, granted, now 10,850,289, previously published as PCT/SE2014/050895, filed on Jul. 16, 2014.
Claims priority of application No. 1350907-0 (SE), filed on Jul. 22, 2013.
Prior Publication US 2021/0060591 A1, Mar. 4, 2021
Int. Cl. B05B 7/14 (2006.01); A61M 15/00 (2006.01); A61K 9/00 (2006.01); B05B 1/26 (2006.01)
CPC B05B 7/1486 (2013.01) [A61K 9/0073 (2013.01); A61M 15/009 (2013.01); B05B 1/262 (2013.01); A61M 15/00 (2013.01); A61M 2202/064 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An aerosol generating apparatus having a main axis of rotational symmetry and comprising:
an at least partially spherical powder chamber for loading an aerosolizable a powder therein and mixing the aerosolizable powder with pressurized gas, the powder chamber having one or several compartments;
at least two inlet conduits connected to a pressure chamber and being operable to introduce the pressurized gas to the powder chamber by at least two inlet orifices of said at least two inlet conduits, respectively, and create a powder suspension in the pressurized gas in the powder chamber; and
an ejection conduit, the ejection conduit having an inlet from the powder chamber and opening at an exit orifice to an ambient pressure, the ejection conduit opening at the exit orifice being operable to form an aerosol when the powder suspension in the pressurized gas is released from the exit orifice, wherein
(i) each of the at least two inlet conduits has a symmetry axis extending into a respective projection line and the at least two inlet conduits are arranged to admit pressurized gas inlet flows in opposite directions;
(ii) the inlet conduit projection lines are equidistant to an inlet conduit parallel plane which contains the apparatus main axis of rotational symmetry;
(iii) the inlet conduit projection lines form acute angles with the apparatus main axis of rotational symmetry; and
(iv) the at least two inlet conduits have inlet orifices located in a spherical part of the at least partially spherical part of the powder chamber and operable to form a forward rotating flow of the powder suspension in the pressurized gas toward the ejection conduit inlet.