NEGATIVE ION GENERATING DEVICE OF AIR CONDITIONING SYSTEM

摘要

PROBLEM TO BE SOLVED: To generate a lot of negative ions even at a low voltage. SOLUTION: In this negative ion generating device 30 for air conditioning system for generating negative ions in the blown air to a cabin passing an air conditioning duct 21 by arranging a needle electrode 31 within the air conditioning duct 21 and applying a minus high voltage to the needle electrode 31 to generate a corona discharge, the device 30 comprises a pulse-like high voltage applying device 32 for applying a pulse-like minus high voltage to the needle electrode 31.