| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate checking the quantity of produced minus ions by a user and enable the control of the quantity of produced minus ions by estimating the quantity of minus ions generated by a minus ion generating means attached to an air cleaner. SOLUTION: The cleaner comprises a means for generating and discharging minus ions into purified air to be fed into room; and a means for acquiring environment information including information about the current operating condition and the condition of introduced air, and also for estimating the quantity of minus ions contained in the purified air, based on the environment information.</p> |
