二次进风炉有大有小,大的如机关食堂大灶,小的如餐桌上的火锅炉。它由内胆、外胆、机动炉胆、机动助燃罩、双层炉齿、上下拦火圈、回烟道、烟囱(0.3～0.5米高)、炉灶 There are two secondary air-conditioning stove big and small, such as the canteen large kitchen, small, such as the table on the fire boiler. The utility model is composed of an inner liner, an outer liner, a motorized furnace liner, a motorized combustion hood, a double-layer furnace tooth, upper and lower barrier rings, a flue channel, a chimney (0.3 to 0.5 meters in height)