Patent ID: 8785894
Filing Date: 2014-07-22
Classification: B01J,H01J,H01K,H05B

Abstract:
1. An irradiation device comprising a housing ( 5 ) having an interior chamber and an infrared emitter ( 1 ; 27 ) arranged therein, the emitter having an emitter tube ( 2 ) made of a high silica content glass, having a circular cross section and defined outer diameter, and having a linear or coil-shaped heating filament ( 3 ) arranged therein, the filament being provided with electrical connection elements ( 4 ) made of a metallic material, the connection elements being guided out from the emitter tube ( 2 ) through a seal ( 13 ), the emitter tube having two ends, at least one of which ends ( 8 ; 28 ) extends into an outer space separated in a fluid-tight way from the interior chamber by a sealing element ( 11 ; 31 ) contacting the emitter tube ( 2 ) on the outside, wherein the at least one emitter tube end ( 8 ; 28 ) also has a circular cross section and the defined outer diameter, and wherein a seal ( 13 ) is provided between the electrical connection element ( 4 ) and the emitter tube ( 2 ), the seal comprising at least one transition glass having a thermal expansion coefficient lying between respective thermal expansion coefficients of the metallic material and the high silica content glass.