| 摘要 |
The present invention relates to an air cleaning apparatus for cleaning of indoor air/outdoor air, which apparatus comprises an air flow duct (11; 111), with an extent in an axial direction (C-C), to accommodate the air flow entering the apparatus, an air-conveying fan unit (13; 113) disposed in the air flow duct (11; 111), a precipitator (12; 112) connected to a high-voltage source (23) and with a throughflow passage for air which is to be cleaned, which precipitator (12; 112) comprises two electrode elements or two groups of electrode elements, each of the respective two being connected to a respective pole of the high-voltage source (23), and a unipolar corona electrode (21; 121) disposed close to one end of the air flow duct (11; 111). A distinguishing feature of the air cleaning apparatus according to the present invention is that a target electrode (22; 122) is disposed at radial spacing from the corona electrode (21; 121), the corona electrode (21; 121) being so disposed that the ions generated at it can freely spread away from the corona electrode (21; 121) towards the target electrode (22; 122), and that the target electrode (22; 122) surrounds the air flow entering the apparatus. |
