Electric heating device, particularly for a heating or air-conditioning unit in a vehicle

摘要

Electric heating device comprising an electric radiator ( 10 ) for heating the air passing through it, said radiator comprising a casing ( 12 ), at least one resistive element mounted in the casing and constituted by at least one zigzag metal strip ( 22 ) which is disposed so as to be directly exposed to the air passing through the casing, and a circuit ( 30 ) for controlling the electrical supply of the resistive element or elements connected to a power supply. The electric radiator ( 10 ) comprises a set of individual heating modules ( 20 ) disposed parallel to one another in the casing ( 12 ) and so as to be directly exposed to the air passing through the casing, each heating module ( 20 ) comprising a pleated or corrugated metal strip ( 22 ) and an electronic switch controlled by the control circuit ( 30 ) intended to selectively inhibit the electrical supply of the metal strip ( 22 ).