| 摘要 |
The vacuum cleaner is of the fan type and is used for blowing. In operation, air is forced under low pressure into a water lock and a pipe where it is simultaneously mixed with grease solvent and hot water. The mixt. is swirled at speed through the water lock, forcing out pollutants and dissolving grease constituents. When the appts. is used, the overflow outlet at the washing point is required to be sealed. |
