| 摘要 |
<p>A low-burning candle comprises a body of fuel (1) having top (1a) and base (1b) regions, a glass enclosure (2), a central wick (3) and a glass or metal spacing member (5) encircling the wick within the body of fuel at a location above the base region of the fuel (1b). The spacing member (5) includes a wick-encircling top portion which limits combustion and thus defines a lower limit of travel of the flame (4) as the fuel is consumed, and vertically extending portion which serves to space the said limit of travel of the flame above the base region of the fuel (1b). The flame is thus kept away from direct contact with the glass enclosure (2) and by selecting the desired thermoconductivity of the spacing member (5) the flame will burn at its lower limit of travel for a greater or lesser length of time, depending on the amount of heat that is transferred to the base region of the fuel (1b) via the spacing member (5).</p> |
