Ring heater used for glass drop injectors consists of a current carrying ring with a large current conducting cross-section as a support ring separated from the heating ring by an insulating layer

摘要

Ring heater consists of a current carrying ring with a large current conducting cross-section as a support ring. The current carrying ring is separated from the heating ring by an insulating layer. Preferred Features: The heating ring is formed from heating strips arranged parallel to the central axis on the periphery of the insulating layer.