Rotary evaporator

A rotary evaporator has joint-pipe (20) of an evacuated double tube adiabatic structure. It is used, e.g. in a rotary evaporator or used with any evaporating apparatus having a heat-exchanging condensor, and avoids premature cooling and undesirable condensing of the solvent vapor ascending therethro...

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Bibliographische Detailangaben
Hauptverfasser:	KADONO, TETSURO, OKAMOTO, JOJI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SEPARATION TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A rotary evaporator has joint-pipe (20) of an evacuated double tube adiabatic structure. It is used, e.g. in a rotary evaporator or used with any evaporating apparatus having a heat-exchanging condensor, and avoids premature cooling and undesirable condensing of the solvent vapor ascending therethrough. Inside the joint-pipe, any reverse flow of the liquefied solvent vapor to a sample flask is effectively prevented, and the solute is brought to complete dryness in an extremely mild conditions. The decrease in the degree of vacuum in the sample flask is also effectively avoided, thus improving the evaporating efficiency and/or concentrating efficiency of the overall apparatus including the sample flask and the pipeline. There is no more local circulation (round trip) of the solvent vapor between the condensor and the recovered-solvent-reservoir through the adapter caused by the reevaporation of the solvent.