Patent ID: 6471753
Filing Date: 2002-10-29
Classification: B03C,B05B

Abstract:
A dust collecting device, comprising:a dust guide duct; one or more capillary within said dust guide duct and used for spraying liquid supplied from a liquid supply thereto; voltage applying means for forming an electric field between said guide duct and said capillary, and a high voltage being applied to said capillary and a low voltage being applied to said guide duct, thus forming highly charged hyperfine liquid droplets sprayed from a tip of the capillary; electric insulating means formed on an external and entire surface of said dust guide duct so as to intercept the low voltage undesirably applied to the dust guide duct; dust sucking means for sucking dust-laden air into the dust guide duct so as to allow dust to be absorbed by said highly charged hyperfine liquid droplets; and dust collecting means detachably coupled to said dust guide duct while being electrically insulated from said duct, said dust collecting means forming an electric field having a polarity opposite to that of said highly charged hyperfine liquid droplets, thus electrostatically collecting and removing the dust absorbed by the highly charged hyperfine liquid droplets.