Patent · US Expired

Coolable infrared radiator element of quartz glass

US6713945B2 · kind B2 · utility

9Cited by

11References

16Claims

0Family size

Assignee

HERAEUS NOBLELIGHT GMBH · DE

Inventors

Stefan Fuchs · Niedernberg, DE
Friedhelm Schneider · Witten, DE
Joachim Scherzer · Bruchköbel, DE

Key dates

Filing date	Aug 17, 2001
Grant date	Mar 30, 2004
Priority date	—
Expiry date	Sep 14, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2203/032
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A coolable infrared radiator element of quartz glass with at least one heating tube, which has a gas-tight current lead-through at each of its two ends. A long, stretched-out electrical heating conductor in the heating tube serves as the radiation source. At least one cooling element is provided which has at least one cooling channel for a liquid coolant. A metal reflector is provided at least in the area of the heating conductor, which reflector has at least one reflective surface. The problem is to provide an infrared radiator which can deliver high energy concentrations of >500 kW/m2 in conjunction with low radiation losses. The problem is solved in that at least one reflective surface, when seen in cross section, describes a line around a surface, where the opening for the passage of at least some of the liquid coolant is provided in the area of this surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.