Improved structure of chip sintering furnace circulating atmosphere

The utility model relates to an improved structure of a chip sintering furnace circulating atmosphere, which comprises an air inlet structure, a flow disturbing structure, an air exhaust structure, a front air brake, a back air brake, etc. An air inlet of the air inlet structure is positioned for transferring inert gas (such as nitrogen or ammonia, etc.) into the furnace, and the proper position of the air outlet end is provided with the flow disturbing structure to cause air transferred to the furnace to form a back flow and to be discharged from the air exhaust structure. The air brake capable of diagonally blowing air into the furnace on both ends of the furnace body can block the escape of air in the furnace and the inlet of outside air. Any area of each cross section inside the furnace can have even temperature. The firing curve can be accurately controlled, and the purity of the air in furnace can be maintained.