| 摘要 |
<p>PURPOSE:To prevent a reduction of function of an air pump by extending the blinding life of a filter. CONSTITUTION:An air intake port 3 to take in the outer air to a filter installing part 2 provided in a pump case 1, and an air suction port 5 to suck the air to a pump unit 4 are provided opposing each other placing a wide interval. A filter 6 is loaded to the filter installing part 2. The meshes of the filter 6 are made coarse at the air intake port 3 side, while made minute at the air suction port 5 side.</p> |
