FIELD: heating.
SUBSTANCE: invention provides a volumetric heating device for beverage preparation machines, comprising an emission source designed for emitting electromagnetic radiation and to transfer the energy to a liquid at least partially surrounding the emission source, a liquid conduct, and an isolation means essentially transparent to the electromagnetic radiation in the emitted spectrum, and designed to electrically isolate the emission source from the liquid. Emission source comprises a strip filament.
EFFECT: volumetric heating device for a beverage or food preparation machine is provided.
53 cl, 22 dwg
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