| 摘要 |
An air purifier (10) including a housing (12) supporting an air inlet, an air outlet, and an air flow passage interconnecting the air inlet (36) and the air outlet (37). The airflow passage is defined by a filtration chamber positioned upstream from a blower chamber and includes a fan (74) driven by a motor for forcing air through the air flow passage from the air inlet to the air outlet. A pre-filter (66) and a main filter (56) are removably supported within the air filtration chamber for entrapping particulates having a size of 0.3 microns and greater. An ultraviolet light source (86) is positioned within the light chamber and is positioned proximate the air outlet. An outlet grille (106) is supported proximate the air outlet and provides for the passage of air while substantially preventing the passage of ultraviolet light. The outlet grille includes a louver assembly including a plurality of blades (136) defining a plurality of convoluted passages. An outlet safety switch (210) is selectively engageable with the outlet grille for preventing operation of the ultraviolet light and the blower assembly if the outlet grille is not properly positioned relative to the housing. An air quality sensor (180) is supported by the housing and provides an indication of ambient air quality to a controller which, in turn, varies operation of the blower assembly based upon the indicated ambient air quality. A filter check gauge (230) is removably positioned proximate the air outlet for providing an indication of air flow volume and thereby, the need to replace either the pre-filter or the main filter.
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