DEODORIZING AND STERILIZING DEVICE HAVING CATALYST DETERIORATION SENSING FUNCTION

摘要

A deodorizing and disinfecting apparatus having catalyst deterioration detection function of the present invention comprises: an air supply portion for inhaling air inside; an ozone generating portion for discharging ozone to the inhaled air: a catalyst for accelerating deodorizing and disinfecting actions and decomposition of the ozone disposed downstream from the ozone generating portion; an ozone sensor for detecting the concentration of remaining ozone disposed downstream from the catalyst; and means for repeating a cycle including stop of ozone discharge from the ozone generating portion for a predetermined time period when the concentration of the remaining ozone reaches a predetermined concentration or more, and for determining that the catalyst is deteriorated when a condition wherein an interval between times when the concentration of the remaining ozone is not less than a predetermined concentration becomes shorter than a predetermined time period is recognized at a predetermined frequency, and then for stopping discharge of the ozone.