An electric heating device (1) for a fluid comprises a heating chamber (5), which is enclosed by an approximately cylindrical wall (6) and into which the fluid enters through a supply connector (7) and out of which the fluid exits through a discharge connector (8). In the heating chamber is a heating body (10) comprising a jacket tube (11), in the interior of which tube a heating-wire spiral (12) extends, the two ends of which spiral can be connected to a source for electrical heating energy, wherein the jacket tube comprises a helical helix portion (20) which is arranged such that its longitudinal axis (19) coincides with the central axis of the cylindrical wall of the heating chamber. In order to achieve effective flow through all volume portions of the heating chamber and optimal heat transfer from the heating body to the fluid, a bead is formed in the cylindrical wall of the heating chamber, which bead extends in the axial direction, is helical and is concave with respect to the interior of the heating chamber, and which bead has the same pitch and the same turn direction as the directly adjacent helix portion of the jacket tube.
ELEKTRISCHES HEIZGERÄT
ELECTRIC HEATING DEVICE
APPAREIL DE CHAUFFAGE ÉLECTRIQUE
2023-03-29
Patent
Electronic Resource
German
IPC: | F24H FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, IN GENERAL , Erhitzer für flüssige oder gasförmige Stoffe, z.B. Wasser- oder Lufterhitzer mit Vorrichtungen zur Wärmeerzeugung, allgemein / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / H05B ELECTRIC HEATING , Elektrische Heizung |