| 摘要 |
PCT No. PCT/GB88/00326 Sec. 371 Date Dec. 27, 1988 Sec. 102(e) Date Dec. 27, 1988 PCT Filed Apr. 27, 1988 PCT Pub. No. WO88/08268 PCT Pub. Date Nov. 3, 1988.An infuser comprises movable screen means, which is preferably a continuous mesh belt (1) passing around rollers (2). Infusible solid and infusing liquid are deposited onto the screen means (1) and means (5) below the screen collect the infusion. A piezo electric sandwich transducer (9) is provided for imparting ultrasonic vibrations to the screen to cause vibration of the screen means to aid cleaning thereof. |
