Efficient steam generator

The utility model relates to an efficient steam generator, and relates to the field of steam generation equipment. An efficient steam generator comprises a shell, a flue gas pipe and heat exchange coil pipes, a combustor is installed above the shell, the shell is provided with a water inlet and a steam outlet, the flue gas pipe is located in the shell and connected to the combustor, the flue gas pipe is provided with a flue gas outlet, and the multiple heat exchange coil pipes are sequentially arranged around the flue gas pipe in the radial direction. The multiple heat exchange coil pipes are communicated with one another, the heat exchange coil pipes are communicated with the water inlet and the steam outlet respectively, smoke flowing out of the smoke outlet makes contact with the heat exchange coil pipes, interval supporting strips are connected to the heat exchange coil pipes in an inserted mode, and gaps exist between adjacent pipelines of the heat exchange coil pipes through the interval supporting stri