Steam generation device of soil steam sterilizer

The invention provides a steam generation device of a soil steam sterilizer. The steam generation device of the soil steam sterilizer is high in combustion efficiency, small in harmful gas emission, simple in structure, light and small in size. The steam generation device comprises a cylinder and a pulse burner, and water is contained in the cylinder. A steam outlet is located in the upper portion of the cylinder. The pulse burner comprises a combustion chamber, a sparking plug, a gasoline tank, a carburetor, a tail pipe and an exhaust decoupling chamber. The combustion chamber is communicated with the exhaust decoupling chamber through the tail pie. The combustion chamber, the tail pipe and the exhaust decoupling chamber are all located in the cylinder. The pulse burner works, gasoline serving as fuel burns in the combustion chamber, generated high-temperature smoke is discharged out of the cylinder through the tail pipe and the exhaust decoupling chamber, and heat passes through the combustion chamber, the tail pipe and the wall surface of the exhaust decoupling chamber to be transmitted to water in the cylinder.