A tiled or earthenware furnace. The Japanese KUNIHO (Japanese Dictionary) says, “Shichirin.
Shichirin is a kind of furnace. It is a kind of furnace. It is said to be useful for boiling medicine and heating sake, and is named after the seven-millimeter amount of charcoal used. In the “Wakan sansai zue,” it is written, “Nanakumi is a furnace with iron inside, and charcoal is heaped up. There is a wind opening next to the bottom of the bamboo screen, and the fire is naturally kindled. The fire is made by itself. The value of the charcoal is less than a minute. The charcoal is called shichirin (seven rin). According to Morisada Komakuso, “In Edo, it is called shichirin, and in Keihan, it is called kanteki.
