Patent ID: 7347679

Claim:
An apparatus for manufacturing ultra-fine particles using an electrospray device, comprising: a first guide duct; a second guide duct positioned at an outer side of said first guide duct and having an axis coaxial with said first guide duct; a third guide duct positioned at an outer side of said second guide duct and having an axis coaxial with said first and second guide ducts; one or more capillary of which tip is positioned within said first guide duct, and which is connected to an injecting means for supplying solution to be sprayed, liquid droplets being sprayed from the tip of said capillary; a carrier gas supplying means for supplying carrier gas into said first guide duct to carry the liquid droplets along said first guide duct; a sheath gas supplying means for supplying sheath gas into said second guide duct; a fuel gas supplying means for supplying fuel gas into said third guide duct; a voltage applying means connected to said capillary and said first guide duct so as to generate a voltage difference therebetween; and a collecting means disposed to be spaced apart from outlets of said guide ducts by a predetermined distance for collecting the ultra-fine particles formed through chemical reactions.