METHOD FOR CONTROLLING AUTOMATIC WINDING-UP OF FILTER MATERIAL IN AIR FILTER

PURPOSE:To enhance filtering efficiency to a large extent, by operating a winder of a rolled filter material according to a wind amount signal and the operation value of dust concn. of air to be treated to eliminate wastefulness of the filter material. CONSTITUTION:The wind amount signal of a blower system is taken out by a wind amount signal sending device 1 and the dust concn. signal of air to be treated by a concn. signal sending device 2. These both signals are subjected to integration treatment by an operation treatment device 3 and, when the operated value reaches the filtering torelance total wind amount set value of a filter material, a filter material winder 4 is operated to carry out one winding of the filter material in a definite amount. Hereinafter, this operation is similarly carried out repeatedly.