METHOD AND APPARATUS FOR PRODUCING HUMANLY-PERCEPTABLE INDICATOR OF ELECTROCHEMICAL PROPERTIES OF AN OUTPUT CLEANING LIQUID

摘要

A surface cleaning apparatus (100, 300, 370, 380, 500) is provided. The apparatus includes a mobile body (102, 306, 381) configured to travel over a surface (125, 302), a cleaning device (110, 112, 308, 314, 375, 385) carried by the mobile body (102, 306, 381), a liquid flow path (16, 17, 18, 59, 70, 71, 160, 160A, 160B), and an electrolyzing device (10, 40, 50, 161, 162, 163, 324, 325, 326, 503, 504, 505) in the liquid flow path (16, 17, 18, 59, 70, 71, 160, 160A, 160B). An indicator (708, 714) provides a humanly-perceptible indication (720) of an electrical operating characteristic of the electrolyzing device (10, 40, 50, 161, 162, 163, 324, 325, 326, 503, 504, 505).