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(11) | EP 0 964 211 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Electrically heated fan |
(57) A series of fans for hot air conveyors with rotating fan has the common characteristics
to have blades (1; 16; 33) with resistive electric paths (8; 16; 34) that are electrically
supplied in order to generate by themselves heat for the heating of the conveyed air.
The resistive electric paths can be made of resistors (8; 34) that are applied to
the blades (1; 33) or else they can be defined by the same blades (16), made of electrically
conductive material. |