Fan type chemical diffusing apparatus

A fan type debugging apparatus for repelling and expelling a noxious or harmful insect with an active ingredient containing as its principal component at least one chemical having a vapor pressure of not less than 1.0×10−4 mmHg at a temperature of 30° C. and effective to act as an insecticide or acaricide or to control growth, or to hinder bloodsucking, biting or eating behavior, of the insect, or to repel the insect, or effective to prevent any other damage by the insect, the apparatus having an active ingredient impregnated body or mass adapted to retain and release by volatilization said active ingredient, and including a fan type blower powered to be driven by a motor, wherein:

• said active ingredient impregnated body or mass is disposed in a wind inlet side of said fan type blower and is designed to provide a wind force resistance R which in terms of the proportion of current consumption E2 by said motor in the presence of said active ingredient impregnated body or mass to current consumption El by said motor in the absence of said active ingredient impregnated body or mass, ranges from 5 to 25% where R is expressed by the equation:
• R=100−E2/E1×100.