A FREEZE DRYER AND A METHOD FOR OPERATING A FREEZE DRYER

The present invention relates to a freeze dryer (1) comprisinga product chamber (2) configured to accommodate products to be freeze-dried,a condenser (4) connected to the product chamber (2) and configured to trap water during a freeze-drying process,a product chamber cooling circuit (10) configured...

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Bibliographische Detailangaben
Hauptverfasser:	BEUTLER, Thomas Heinrich Ludwig, TOENNESSEN, Maximilian, KRÜGER, Frank, PLASSMANN, Olaf
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS DRYING DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a freeze dryer (1) comprisinga product chamber (2) configured to accommodate products to be freeze-dried,a condenser (4) connected to the product chamber (2) and configured to trap water during a freeze-drying process,a product chamber cooling circuit (10) configured to cool the product chamber (2), the product chamber cooling circuit (10) comprising a first heat transfer fluid,a condenser cooling circuit (20) configured to cool the condenser (4), the condenser cooling circuit (20) comprising a second heat transfer fluid and being separate from the product chamber cooling circuit (10),characterized bya first additional cooling circuit (30) comprising carbon dioxide or ammonia as refrigerant, anda first heat exchanger (51) configured to transfer heat between the condenser cooling circuit (20) and the first additional cooling circuit (30). Another aspect of the invention relates to a method (100) for operating such freeze dryer (1).