Patent ID: 6860434

Claim:
An apparatus for manufacturing ultra-fine particles using an electrospray device, comprising: a dust guide duct; one or more capillary of which tip is positioned within said 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 positioned at the rear of the tip of said capillary for supplying carrier gas into said guide duct to carry the liquid droplets along said guide duct; a voltage applying means connected to said capillary and said guide duct so as to generate voltage difference therebetween, and a high voltage being applied to said capillary and a low voltage being applied to said guide duct and having the same polarity as the high voltage applied to said capillary; a heating means for heating outer surface of said guide duct so as to evaporate the sprayed liquid droplets and generate chemical reactions thereof; a collecting means disposed to be spaced apart from an outlet of said guide duct by a predetermined distance for collecting the ultra-fine particles formed through said chemical reactions.