公开(公告)号：US5467636A

公开(公告)日：1995-11-21

申请号：US313689

申请日：1994-09-27

申请人： David A. Thompson ,  Venkatesh Rajagopalan ,  Kurt W. Wright ,  John J. Sterba ,  William J. Paulus ,  Nancy J. Paulus ,  Kathryn M. McCauley ,  David K. Chen

发明人： David A. Thompson ,  Venkatesh Rajagopalan ,  Kurt W. Wright ,  John J. Sterba ,  William J. Paulus ,  Nancy J. Paulus ,  Kathryn M. McCauley ,  David K. Chen

IPC分类号： G01N27/409 ,  G01N27/12 ,  G01N27/407 ,  B05D5/12 ,  H01C7/00

CPC分类号： G01N27/4062 ,  G01N27/407 ,  G01N27/4078

摘要： The invention includes a flat plate exhaust sensor including a flat plate sensing element which is carried by a first ceramic insulator having at its upper end an upwardly extending annular ring. The annular ring defines a disc-shaped recess which is filled with a glass seal. Thus, the glass seal extends from the flat plate sensor to the annular ring of the ceramic insulator. The sensor includes an upper tubular shell which includes at the lower end a leg portion which extends inside an inner wall of a lower tubular shell. The leg portion includes a foot which is bent to match an outwardly extending sloped annular shoulder formed on an upper insulator. The upper insulator is seated on the glass seal. An intermediate gasket is formed by an active metal braze gasket between the foot and the outwardly extending sloped annular shoulder of the upper insulator. An external seal is provided by a braze ring which joins an upper end of the lower tubular shell to the upper tubular shell. The system removed the thermal expansion mismatch problems of prior art glass seal sensors.

摘要翻译： 本发明包括平板排气传感器，其包括平板传感元件，该平板传感元件由第一陶瓷绝缘体承载，第一陶瓷绝缘体在其上端具有向上延伸的环形环。 环形圈限定了一个填充有玻璃密封件的盘形凹部。 因此，玻璃密封件从平板传感器延伸到陶瓷绝缘体的环形环。 传感器包括一个上部管状壳体，该上部管状壳体在下端包括在下部管状壳体的内壁内延伸的腿部。 脚部包括脚，其弯曲以匹配形成在上绝缘体上的向外延伸的倾斜环形肩部。 上绝缘体位于玻璃密封件上。 中间垫圈由位于上部绝缘体的脚和向外延伸的倾斜环形肩之间的活性金属钎焊垫片形成。 外部密封由钎焊环提供，钎焊环将下部管状壳体的上端连接到上部管状壳体。 该系统消除了现有技术玻璃密封传感器的热膨胀失配问题。