| 摘要 |
PCT No. PCT/AU91/00133 Sec. 371 Date Dec. 2, 1992 Sec. 102(e) Date Dec. 2, 1992 PCT Filed Apr. 9, 1991 PCT Pub. No. WO91/15146 PCT Pub. Date Oct. 17, 1991.A suction cleaning system comprises a liquid ring pump which draws dirt-laden air into an upstream separator to remove most of the large and small particulate matter. Between the separator and the pump, air having fine particulate matter is fed into a water chamber. In the water chamber a stream of air and water is generated, with the fine matter being entrained in suspension in the water whereby air free of the fine matter can be withdrawn from the chamber by the pump. |
