| 摘要 |
An air purifier includes a detection apparatus, calculates a relative value of the number of microorganisms detected from airborne particles by the detection apparatus to a prescribed total value, and determines a central angle α corresponding to the relative value. Further, regarding the number of airborne particles other than microorganisms detected by the detection apparatus as the number of dusts, relative value of dust particles to a prescribed total value is calculated, and the central angle &bgr; corresponding to the relative value is determined. On a display panel, the amount of microorganisms is displayed as a bacteria meter by the area from the start position to the angle α, and by the following area to the angle &bgr;, the number of dusts is displayed as a dust meter, in a circle graph. |
