Energy controlled branching method and device for negative ions and negative electrons

The invention relates to an energy controlled branching method and device for negative ions and negative electrons. A dust collecting electrode consists of a metal cylindrical straight pipe or an arbitrary geometric closed-loop polygon straight pipe, and at least one or N metal straight pipes or bent pipes can be placed in a metal cylindrical pipe so as to form a composite dust collecting electrode. An emitter is a device which is placed outside and can be displaced or positioned, is different from a conventional known emitter only adopting fixation positioning, and is different from an electrostatic dust remover or a negative ion dust remover which is arranged in the interior and performs emitting only in one direction in the interior. The energy controlled branching device is characterized in that the emitter is an energy controlling and gathering separator for negative ions, which can be displaced or can be positioned. As long as a relative distance between the emitter and the dust collecting electrode is changed, the negative ions of different number and different quality can be generated as required, so that the negative electrons can be effectively separated and branched, and besides, ozone can be effectively generated as required or the ozone can be effectively restrained as required.