发明名称 |
APPARATUS FOR DETECTING GASEOUS DISCHARGE IN VACUUM FURNACES |
摘要 |
An electrically heated vacuum furnace is provided with special lead-through devices for transmitting current to the heating elements. In order to recognize gas discharges which can occur between a lead-through and a tank wall, the insulation of the lead-through is surrounded by an auxiliary electrode. A thermocouple can also be used instead of an auxiliary electrode. A signal derived from the auxiliary electrode can be used to shut off the furnace power to avoid damage thereto.
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申请公布号 |
US5193100(A) |
申请公布日期 |
1993.03.09 |
申请号 |
US19910718808 |
申请日期 |
1991.06.21 |
申请人 |
ARTHUR PFEIFFER VAKUUMTECHNIK WETZLAR GMBH |
发明人 |
HACK, ROBERT;POLHEDE, WILHELM |
分类号 |
F27D11/02;F27D21/00;H05B3/00;H05B3/62 |
主分类号 |
F27D11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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