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    • 9. 发明授权
    • Warning device for filter-changing time
    • 过滤器更换时间的警告装置
    • US06239694B1
    • 2001-05-29
    • US09553806
    • 2000-04-21
    • Yuji HondaHirokazu ImaiHitoshi Ninomiya
    • Yuji HondaHirokazu ImaiHitoshi Ninomiya
    • B60Q100
    • B01D46/0086B01D46/46B60H3/0608B60H2003/0683
    • A warning device for warning change time of a filter for cleaning air includes an indication lamp which indicates a warning of the change time of the filter, and a control unit for controlling operation of the indication lamp. The control unit sets a next timer setting value for the next filter change to a filter-using time until a change of the filter, and operates the indication lamp when the filter-using time passes the next timer setting value after the change of the filter. Thus, the warning of the change time of the filter is performed at a suitable moment reflecting a variation of a clogging degree of the filter. As a result, the warning device accurately performs the warning of the change time of the filer without using a sensor for detecting the clogging degree of the filter.
    • 用于清洁空气的过滤器的警告更换时间的警告装置包括指示灯,其指示过滤器的改变时间的警告;以及控制单元,用于控制指示灯的操作。 控制单元将下一个滤波器改变的下一个定时器设置值设置为滤波器使用时间直到滤波器的改变,并且在滤波器改变之后滤波器使用时间经过下一个定时器设置值时操作指示灯 。 因此,过滤器的变更时间的警告在反映过滤器的堵塞程度的变化的适当时刻进行。 结果,警告装置在不使用用于检测过滤器的堵塞程度的传感器的情况下,准确地执行纸张更换时间的警告。