Buchi Rotavapo R-215 Uživatelský manuál stáhnout pdf (Strana 25)

4 Description of function

25 R-210/215 Operation Manual, Version F

4 Description of function

This chapter explains the basic principle of the instrument, shows how it is structured and gives a

functional description of the assemblies.

4.1 Functional principle of a Rotavapor

With a Rotavapor, single step distillations are performed quickly and in a product friendly manner. The

basis of this procedure is the evaporation and condensation of solvents using a rotating evaporating

ﬂask under vacuum. Distilling products under vacuum increases the performance and helps to protect

the products.

4.1.1 Functional principle considering the V assembly as example

Fig. 4.1: Overview of a V assembly

a Evaporation area

The solvent is heated by means of a heating bath. A thin solvent ﬁlm forms on the inside of the rotating

evaporating ﬂask, resulting in an increased evaporation rate. The rotations also lead to an even mixing

of the sample thus preventing stationary overheating in the ﬂask.

b Rotation drive including vapor duct

The drive unit ensures that the evaporating ﬂask rotates evenly.

The integrated vapor duct transports the vapor from the evaporation area to the cooling area.

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Buchi Rotavapo R-215 Uživatelský manuál Strana 25