Abstract: A spheroidally emitting infrared emitter with a sheathing bulb. A radiation source provided with an electrical connection is surrounded by the sheathing bulb. The radiation source includes a first radiation strip that is bent along its longitudinal axis in such a way that it has a top, convex, curved flat side. The device is improved with regard to its thermal inertia while achieving a high radiation output.

Abstract: A short-wave infrared radiator includes a longitudinally extended twin tube having two partial chambers running in longitudinal direction. The radiator can optionally be heated over its entire length or a partial length. The radiator is divided into two radiator segments, each having a heater coil and in the vicinity of a partition wall, the heater coils of partial chambers are electrically connected with the heater coils of other partial chambers of the segments. The radiator includes terminals of respective radiator ends to form a power supply and a power return.

Abstract: Radiant units are known in the form of a plate-like assembly having a supporting frame which accommodates a plurality of radiant lamps on holders, the radiant lamps being shielded by a front cover and a back cover, the front cover, which is permeable to radiation, being held removably. To design a radiant unit so as to permit easy and rapid installation as well as the quick replacement of the front cover as well as of the rear cover in order to change the internally mounted radiator, and also to permit compensation for different thermal expansion between the covers and the supporting frame, the front and/or rear cover are held with their outer faces against abutments joined to the supporting frame, and spring-loaded clamps are associated with the inner faces and urge the cover from the inside against the abutments.

Abstract: Disclosed is a self-contained radiant unit in the form of a portal for use particularly as a drying and baking tunnel for the automobile industry which is equipped with a plurality of infrared lamps on its inner surfaces. Air inlet openings are provided in the roof and/or side walls of the portal, at least over the region midway along with their horizontal extension, for the turbulence-free removal of the vapors emanating from the surface of the object being treated as well as of suspended particles present in the drying and baking zone.