Magnetic fields of induction heaters in the framework of Directive 2004/40/EC of the European Parliament and of the Council
Magnetic fields of induction heaters in the framework of Directive 2004/40/EC of the European Parliament and of the Council
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DOI：
10.1080/10803548.2006.11076678
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发表时间：
2006-01-01
影响因子：
2.4
通讯作者：
Jonlet, Florence
中科院分区：
文献类型：
--
作者：
Decat, Gilbert;Deckx, Leo;Jonlet, Florence
用PMM（意大利）频谱分析仪测量了6台感应加热炉和1台电弧炉的B场频谱和极化。频谱分析表明，没有观察到实质性的谐波，而偏振分析表明，操作员暴露在距离加热器1.5 m的范围内是不均匀的。当距离较大时，身体均匀暴露。一般来说，我们可以说，B场在加热器之间变化很大，7个加热器中有5个的暴露超过了国际非电离辐射防护委员会（ICNIRP）（1998年）和欧洲指令2004/40/EC建议的职业参考水平。在该指令的框架内，应采取一些保护行动。鉴于现有/旧感应炉的缓解是困难的，新感应加热器及其外壳的设计应基于电磁还原工程概念等。
The spectrum and the polarization of the magnetic flux density (B-field) of 6 induction heaters and 1 arc oven were measured by means of a PMM (Italy) spectrum analyser. The spectrum analysis showed that no substantial harmonics were observed while the polarization analysis revealed that the operators exposure was non-homogeneous within a distance of 1.5 m from the heater. When the distance was larger, the body was homogeneously exposed. In general we can state that the B-field strongly varied between heaters and that exposure exceeded the occupational reference levels recommended by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) (1998) and European Directive 2004/40/EC in 5 of the 7 heaters. Within the framework of the Directive some protection actions should be taken. Whereas mitigation of existing/ old induction ovens is difficult, the design of new induction heaters and their housing should be based, among others, on electromagnetic reducing engineering concepts.