High energy efficiency biomass boiler furnace structure

The utility model relates to the field of biomass boilers, in particular to a high energy efficiency biomass boiler furnace structure. The high energy efficiency biomass boiler furnace structure comprises a front arch and a back arch which are arranged at the front and back ends of a furnace, and a fire grate arranged at the bottom of the furnace; a front fold smoke wall is arranged at a position between two side walls in the furnace which is 1/3 length of the furnace from the front arch; a gap h1 is formed between the top of the front fold smoke wall and the top of the furnace; a gap h2 is formed between the bottom of the front fold smoke wall and the fire grate; a back fold smoke wall is arranged on the top of the furnace which is 2/3 length of the furnace from the front arch; a gap h3 is formed between the bottom of the back fold smoke wall and the fire grate; a lattice wall is arranged perpendicularly between the top of the back arch and the top of the furnace. The biomass boiler furnace structure can mak