Patent ID: 8400750
Filing Date: 2013-03-19
Classification: H05H

Abstract:
1. A particle charger, comprising: a housing made from an electrically conductive material, said housing comprising a charging chamber, a particle inlet, a sheath air inlet, an outlet and a first accelerating channel, said particle inlet being disposed in communication with said charging chamber for introducing a stream of particles into said charging chamber, said sheath air inlet being disposed in communication with said charging chamber for introducing a sheath air into said charging chamber, said first accelerating channel being connected between said charging chamber and said outlet and including a gap for transmitting said stream of particles and said sheath air from said charging chamber to said outlet; a discharge wire arranged in said charging chamber of said housing; and a first flow guide sleeve mounted inside said housing; said gap of said first accelerating channel being defined between said first flow guide sleeve and an inside wall of said housing, wherein said first flow guide sleeve comprises an outside annular groove extending around the periphery thereof at a location corresponding to said outlet of said housing.