Efficient steam generator

The invention discloses an efficient steam generator, and relates to the technical field of fuel equipment. The efficient steam generator comprises a cylinder and a furnace pipe, wherein the furnace pipe is arranged at the bottom of the cylinder, an upper tube plate and a lower tube plate are arranged in the cylinder at an interval, a water storage cavity is formed by the lower tube plate and thebottom of the cylinder, a water inlet pipe communicates with the outer side of the water storage cavity, a smoke return cavity is formed between the lower tube plate and the upper tube plate, a smokeoutlet pipe is arranged above the cylinder, the smoke outlet pipe communicates with the smoke return cavity, a steam cavity is formed by the upper tube plate and the upper part of the cylinder, a steam outlet is formed in the steam cavity, a smoke return pipe is arranged above the furnace pipe, the smoke return pipe communicates with the smoke return cavity, a plurality of water pipes are connected between the upper tube p