| 摘要 |
<p>The invention relates to a freeze-drying apparatus with a freeze-drying chamber (2), with a condenser chamber (3) and with an intermediate plate (4) which is situated between the freeze-drying chamber and the condenser chamber and is equipped with a closable passage; in order to be able to control the passage cross-section accurately, it is proposed that two discs (15, 18), which are rotatable in relation to one another, are provided to form the passage, that these discs are provided with openings (21, 22) in each case lying at a remove from the axis of rotation, and that these openings are designed in such a manner that, by a rotary movement, they can be adjusted into an overlapping position, a non-overlapping position and into intermediate positions. …<IMAGE>… </p> |
