| 摘要 |
A briquette having an egg-shaped central hole is provided to improve combustion efficiency of the briquettes by adjusting central holes of vertically stacked briquettes such that all briquette holes of the briquettes are adjusted to a predetermined ratio, thereby enabling the entire briquettes to burn uniformly. In a briquette(10) in which a plurality of briquette holes(20) are vertically perforated such that the briquette burns well, a briquette having an egg-shaped central hole is characterized in that a central hole(21) surrounded by the briquette holes and vertically perforated in a central part of the briquette is formed in an egg shape. The central hole of the briquette is formed in an oval, square, or polygonal shape. |
