| 摘要 |
PURPOSE:To detect the life of an ozon filter and to exchange it at a proper time by providing a display means which indicates the exchange of an ozon elimination means when the count value of a count means is over a fixed value. CONSTITUTION:The count means 28 which can accumulate and hold a value in proportion to the accumulated energizing time of a high-pressure current flowing from a high-pressure current generation means 29 is provided. Due to that, by measuring the energizing time to the means 29 relating on the generation of ozon and accumulating and holding the value in proportion to the generated quantity of the ozon, the life of the ozon elimination means can be precisely detected. Besides, the display means 30 which indicates the exchange of the ozon elimination means when the count value of the means 28 is over the fixed value is provided. Thus, the ozon elimination means is exchanged at the proper time. |
