| 摘要 |
PCT No. PCT/AU92/00463 Sec. 371 Date Feb. 15, 1994 Sec. 102(e) Date Feb. 15, 1994 PCT Filed Sep. 3, 1992 PCT Pub. No. WO93/04761 PCT Pub. Date Mar. 18, 1993.An air filter includes an inlet for compressed air, a prefiltration chamber into which air from the inlet passes, a porous filter through which air from the prefiltration chamber passes to strain particular matter from the air, a plurality of venturis through which air from the porous filter passes, an expansion chamber in which air from the venturis expands and cools so that droplets of oil and water precipitate and accumulate at the bottom of the expansion chamber, and an outlet for air from the expansion chamber. |
