PROBLEM TO BE SOLVED: To provide an air cleaner that suppresses deterioration of electrodes by suppressing a peak value of current flowing during energization after polarity changeover even when water that is an electrolysis object has high conductivity.SOLUTION: An air cleaner includes an electrode unit 9. The electrode unit includes an energization means 13 that performs intermittent energization by alternately switching energization and non-energization, and a conductive path inversion means 14. The conductive path inversion means 14 inverts a conductive path one or more seconds prior to termination of non-energizing time during the non-energization, and after the inversion, applies electrical current from a negative-electrode side before the inversion of the electrode unit 9 to a positive-electrode side with water 5 interposed therebetween.SELECTED DRAWING: Figure 4【課題】電気分解対象の水の導電率が高い場合であっても、極性切替後の通電時に流れる電流ピーク値を抑制し、電極の劣化を抑制する空気清浄装置を提供する。【解決手段】電極ユニット９に通電と非通電を交互に切り替えて間欠通電する通電手段１３と通電路反転手段１４とを備え、通電路反転手段１４は前記非通電時において非通電時間の終了に対して１秒以上前に通電路を反転させ、反転後に電極ユニット９の反転前における負極側から水５を介して正極側に電流を流す空気清浄装置を提供する。【選択図】図４
