发明名称 |
A SHIELDED HEATING ELEMENT AND A METHOD OF MANUFACTURING THE SAME |
摘要 |
PCT No. PCT/JP82/00171 Sec. 371 Date Jan. 17, 1983 Sec. 102(e) Date Jan. 17, 1983 PCT Filed May 17, 1982 PCT Pub. No. WO82/04171 PCT Pub. Date Nov. 25, 1982.This invention relates to a sheathed resistance heater which comprises a metal pipe (3), a heating wire (2) received in the metal pipe, and an electrically insulating powder (4) filled in the pipe and also to a method for fabricating same. The electrically insulating powder (4) contains 0.1-10 wt % of the specific type of an oxide by which the heater has a prolonged life because the oxide serves to suppress the metallic component of the heating wire (2) from evaporating, and its insulation resistance under self-heating conditions can be prevented from lowering. The heater has wide utility in both domestic and industrial fields. |
申请公布号 |
DE3278966(D1) |
申请公布日期 |
1988.09.29 |
申请号 |
DE19823278966 |
申请日期 |
1982.05.17 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NARUO, NOBORU;KAWANISHI, HIDEKATA |
分类号 |
H05B3/10;H05B3/48;(IPC1-7):H05B3/48 |
主分类号 |
H05B3/10 |
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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