METHOD FOR CONTROLLING BLOWOFF FORCE OF VENTILATING SYSTEM, PARTICULARLY IN CONCERNED WITH IMPROVING THE VENTILATION EFFICIENCY BY COMPENSATING BLOWOFF FORCE OF FAN CORRESPONDING TO RAPID CHANGE OF CARBON DIOXIDE DENSITY

摘要

PURPOSE: A method for controlling blowoff force of a ventilating system is provided to improve the ventilation efficiency by compensating blowoff force of a fan corresponding to rapid change of carbon dioxide density, and efficiently cope with rapid pollution of indoor air by using density change amount in unit time. CONSTITUTION: A current carbon dioxide density value and a carbon dioxide density change amount per unit time are obtained(S501,S502). A level of the carbon dioxide density is judged by comparing the detected carbon dioxide density value with a reference density value divided into steps(S503,S506,S509,S510,S512,S515,S517). Driving strength of an air supply fan and an air discharge fan is controlled by using the carbon dioxide density level and the carbon dioxide density change amount level(S505,S507,S508,S511,S513,S514,S516,S518,S519).