Device for converting electricity into heat and electric heater with such a device

A device for converting electricity into heat, the device comprising:

• a housing;
• a first flat winding support comprised of an electrically insulating material;
• first electrical insulation;
• a first electric heating element wound on the first flat winding support, the first electrical heating element supported in a wound state on the first flat winding support, being disposed in the housing and electrically insulated relative to the housing by the first electrical insulation;
• a second flat winding support comprised of an electrically insulating material;
• second electrical insulation;
• further electrical insulation;
• a second electric heating element wound on the second flat winding support galvanically separated from the first electric heating element by the further electrical insulation, the second electric heating element being disposed in the housing and electrically insulated relative to the housing by the second insulation such that first electric heating element and the second electric heating element are electrically insulated relative to the housing, wherein the first and second flat winding supports and the first and second electric heating elements are arranged in a stack inside the housing, the first electric heating element having terminals and the second electric heating element having terminals, the first electric heating element terminals being provided separate from the second electric heating element terminals, both of the first electric heating element terminals being located at a same end of the first flat winding support, the second electric heating element terminals being located at a same end of the second flat winding support;
• each of the first and second electrical heating elements having a first end and an opposite second end, respective said terminals of the each electrical heating element being located at the respective first end, the each electrical heating element having a winding with a first terminal end, a wound portion and a second terminal end, the each first terminal end being arranged at the respective first end of the respective one electrical heating element, the each wound portion extending from the first end of the respective one electrical heating element to the second end of the respective one electrical heating element, the wound portion being wound around the respective flat winding support, the each second terminal end extending from the second end of the respective each electrical heating element to the first end of the respective each electrical heating element, and extending adjacent to the wound portion, respective, the second terminal end of the first electrical heating element being on a return side of the first electrical heating element, the second terminal end of the second electrical heating element being on a return side of the second electrical heating element, the return sides of the first and second electrical heating elements being on different sides of the housing.