US 11,673,147 B2
Air purification system
Praful Ramachandra Naik, Pune (IN); and Alok Kumar Gupta, New Delhi (IN)
Appl. No. 17/45,198
Filed by Praful Ramachandra Naik, Pune (IN); and Alok Kumar Gupta, New Delhi (IN)
PCT Filed Mar. 4, 2019, PCT No. PCT/IB2019/051711
§ 371(c)(1), (2) Date Oct. 5, 2020,
PCT Pub. No. WO2019/193433, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 201821013355 (IN), filed on Apr. 7, 2018.
Prior Publication US 2021/0039112 A1, Feb. 11, 2021
Int. Cl. B03C 3/41 (2006.01); B03C 3/019 (2006.01); B03C 3/36 (2006.01); B03C 3/47 (2006.01); B03C 3/49 (2006.01); A61L 9/22 (2006.01)
CPC B03C 3/41 (2013.01) [B03C 3/019 (2013.01); B03C 3/368 (2013.01); B03C 3/47 (2013.01); B03C 3/49 (2013.01); A61L 9/22 (2013.01); A61L 2209/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An air purification system comprising:
a. a tubular shell defined by at least one electrically grounded wall defined by an inner surface and an outer surface, an inlet and an outlet;
b. a blower configured to generate flow of air through said tubular shell;
c. at least one elongated electrode fitted within said tubular shell between said inlet and said outlet and electrically isolated from said tubular shell;
d. an electric voltage supply configured to apply an electric current of a predetermined voltage on the at least one elongated electrode; and
e. a plurality of spikes extending from said at least one elongated electrode, said spikes having tips spaced apart from said inner surface and configured to generate a corona between said tips and said inner surface when an electric current of high voltage is made to pass through said at least one elongated electrode and thereby ionize gases and charge particles present in the air resulting in said charged particles being deposited on said inner surface of said tubular shell;
wherein a predetermined distance of separation between said plurality of spikes varies along the length of said at least one elongated electrode, and wherein said predetermined distance of separation between said plurality of spikes decreases along the length of said at least one elongated electrode towards said outlet of said shell.