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    • 1. 发明授权
    • Self-alarming air cleaner
    • 自动空气净化器
    • US08231716B2
    • 2012-07-31
    • US12664674
    • 2008-01-31
    • Chiwai Patrick Poon
    • Chiwai Patrick Poon
    • B03C3/72
    • B01D46/0086
    • A self-alarming air cleaner is disclosed. The air cleaner includes an air filter element (1), a light emitting element (2) and a light sensor (3). The light emitting element (2) and the light sensor (3) are both faced to the air filter element (1). The light emitted from the light emitting element (2) is reflected by the air filter element (1) or permeated to the air filter element (1), then forms an area of light attenuation where the light sensor (3) is located. The light emitting element (2) and the light sensor (3) connect with a circuit which has an alarming device. When much dust is accumulated on the air filter element (1), the intensity of the light reaching the light sensor (3) is weakened and the alarming device (4) can give an alarm automatically.
    • 公开了一种自我报警的空气净化器。 空气滤清器包括空气过滤元件(1),发光元件(2)和光传感器(3)。 发光元件(2)和光传感器(3)都面向空气过滤元件(1)。 从发光元件(2)发射的光被空气过滤器元件(1)反射或透过空气过滤器元件(1),然后形成光传感器(3)所在的光衰减区域。 发光元件(2)和光传感器(3)与具有报警装置的电路连接。 当空气过滤器元件(1)上积聚了很多灰尘时,到达光传感器(3)的光强度变弱,报警装置(4)将自动报警。