| 摘要 |
PURPOSE:To enable to continue combustion in good condition for a wick, by composing a fuel vaporizing part with a porous body made of silica-alumina system, with heat-resistant, inorganic pigment added to it, and by providing a notched part on the edge of a vaporizing part. CONSTITUTION:A main wick 1 is composed of a porous body of silica-alumina system, and heat-resistant, inorganic pigment 4 is added to a fuel vaporizing part 3, while a flame spreading part 5, which is the edge of a vaporizing part 3, is provided with notched parts A. A wick, of which fuel vaporizing part 3 is made of a porous body of silica-alumina system, is such that the average diameter of a pore is 5-10mu, and the speed to suck up fuel is faster than that of ordinary glass fiber at the temperature which is under the condition where the fuel is vaporized, so that tar is hard to be accumulated in the wick. The characteristic to tar is improved by adding heat-resistant, inorganic pigment to the wick, because it makes the diameter of a pore all the more smaller. With such an arrangement, the tendency to laten a flame spreading time is inhibited, so that combustion in good condition can be assured for a wick for a long time. |
