| 摘要 |
PROBLEM TO BE SOLVED: To supply a room with a constant quantity of minus ions at all times by coating the inner surface with a synthetic resin paint mixed with electric soap and a dispersant of specified grain size. SOLUTION: When the coupling part between ducts has square cross-section, a flange 11 is provided at the end of a unit duct constructing an air supply duct 8 (or duct 9). When the unit ducts are coupled, flanges 11 at the duct end are jointed by means of screws 12 such that no gap appears between the flanges 11. Electric soap to be mixed with a paint 13 has grain size of 0.5-50 μ. It is ground to produce electric soap powder having grain size of 0.5-50 μwhich is mixed with a synthetic resin paint. Minus ions can thereby be generated in the outer air being introduced into a room or in the circulation air being sucked from the room and returned back to the room. |
