ELECTRIC HEATING RADIATOR, AND PROCESS AND APPARATUS FOR ITS MANUFACTURE

摘要

A method for the manufacture of a radiant electrical heater, intended more particularly for heating glass ceramic hotplates, comprises so inserting or pressing helical heating resistors in helical slots in a support, such that the support or the heater coils themselves are deformed and consequently fixed to the support. The coils penetrate the wall or bottom areas of the slot or are otherwise secured by parts of the support by positive engagement. An apparatus for performing the method has a tool with ribs which deforms the support or heater coils for positive engagement. A radiant heater is obtained, whose support has partly overlapping deformations in the slot area of the heater coils.