Evaporation pipe type backflow combustion chamber of micro gas turbine engine

The invention discloses an evaporation pipe type backflow combustion chamber of a miniature gas turbine engine, which comprises a casing body, an evaporation pipe, a flow guide pipe, a flow guide pipe, a flow guide pipe, a flow guide pipe, a flow guide pipe, a flow guide pipe and a flow guide pipe, an annular mixed combustion cavity is formed in the flame tube body, the longitudinal section of the flame tube body is in a U shape, the U-shaped opening end of the flame tube body is inserted into the airflow cavity along one end of the cartridge receiver body, a connecting plate is fixed to the connecting position of the flame tube body and the cartridge receiver body, and main combustion holes and mixing holes are formed in the flame tube body; the multiple evaporation pipes are obliquely fixed in the mixed combustion cavity and are uniformly arranged on the same circumferential surface; and the flame tube baffle plate is fixed in the mixed combustion cavity and is arranged opposite to the plurality of evaporat