Combustor

The utility model discloses a burner which comprises an outer fire cover, and an upper edge table is formed on the outer edge of the outer fire cover. The combustion plate is arranged in an inner cavity of the outer fire cover; the upper cover comprises a high-permeability plate and an annular supporting plate for fixing the high-permeability plate, the upper cover and the combustion plate are arranged above the outer fire cover in a covering mode at a certain interval, the upper surface of the combustion plate is equal to or slightly higher than the upper edge table, a smoke exhaust channel is formed between the upper cover and the outer fire cover, and the smoke exhaust channel is communicated with the upper edge table. And high-temperature smoke flows out of the outside along the smoke exhaust channel from the combustion plate. According to the combustor, the upper surface of the combustion plate is equal to or slightly higher than the upper edge table, no obvious height difference exists, the upper surfac