NOVELTY - The firewood gasification furnace has furnace (1), gasification furnace unit (2), gasification furnace cover, ignition and ash discharge hole (3), infrared furnace head (7), control valve, tar discharge pipe (8), blower (9), filter (11) and pipeline. A stepless speed regulation switch (6), an air feeding and smoke discharge switch (5) and a secondary air feeding switch (4) for regulating wind power of blower are arranged on furnace. The infrared furnace head is arranged on upper surface of furnace in same horizontal plane of material feeding hole of gasification furnace unit.    USE - Firewood gasification furnace for use in stoves used in farms.    ADVANTAGE - Provides a firewood gasification furnace that has simple structure and beautiful appearance. Ensures abundant fuel sources that can be directly used in firewood gasification furnace, including plant wastes of straws, firewood and sawn wood. Ensures that the requirement of water content of the plant is not high for low cost. Ensures that a secondary air feeding structure is provided in the furnace for high gasification rate, stable combustion, long duration, reduced smoke, and strong firepower.    DETAILED DESCRIPTION - The blower communicates with the gasification furnace unit through the pipeline. The control valve is a four-way combined control valve provided in the integrated structure comprising of a secondary air feeding valve and an air feeding and smoke discharge valve. Four ports of the four-way combined control valve includes the air inlet, secondary air inlet, smoke discharge hole and air inlet. The air inlet communicates with the gasification furnace unit through the pipeline and filter. The secondary air inlet communicates with the blower through the pipeline. The smoke discharge hole is led outside through the pipeline. The air inlet communicates with the infrared furnace head through the pipeline.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional perspective view of the firewood gasification furnace.    Furnace (1)    Gasification furnace unit (2)    Ignition and ash discharge hole (3)    Secondary air feeding switch (4)    Air feeding and smoke discharge switch (5)    Stepless speed regulation switch (6)    Infrared furnace head (7)    Tar discharge pipe (8)    Blower (9)    Filter (11)