| 摘要 |
An ignitor probe assembly (10) for the ignition of fossil fuel burners comprises in combination an ignitor (11) having a tip (70) activated by electrical energy and producing a temperature sufficient to ignite a fossil fuel, pipe means (12) for positioning the ignitor into the burner, means for carrying electrical power (13) to the ignitor passing through the pipe means adapter means (14) carried by the pipe means for the removable assembly of the ignitor thereto, and refractory insulator means (15) engageable with the means for carrying electrical power and interposed substantially concentrically within the adapter means for maintaining the means for carrying electrical power separate therefrom. A novel insulator (15) comprises a unitary, cylindrical tube (75) of refractory material having a hub (76) of greater external diameter, first (78) and second (79) axial bores passing through the tube and hub respectively, the bores being of different diameters and, a shoulder (80) formed by the intersection of the first and second bores.
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