The present invention relates to an air circulation device for a livestock boiler, The first heat exchange unit is formed inside the boiler to form a combustion chamber therein to burn solid fuel, The rising and incomplete combustion gas is recombusted by receiving the rising combustion heat from the primary and secondary recombustion networks, each of which has a multi-layered wire mesh formed on top of the combustion chamber, The water heating chamber of the first heat exchanger is configured to heat water through a water supply pipe, A second heat exchange unit and a third heat exchange unit are installed in the primary recombustion network and the secondary recombustion network of the combustion chamber to heat the fruit flowing through the internal piping, In the second heat exchange part and the third heat exchange part, the air supplied between the heat exchange tubes through which the heated fruits pass is brought into contact with each other so that the air is heated while passing through, The air supplied to the combustion chamber receives air located at the upper part of the house through the inlet pipe by the supply fan, and contains a lot of organic odor components. It prevents cooling of the combustion chamber by introducing high temperature air in the house. Do it, The heated air is characterized in that the air supply pipe is arranged to the bottom of the house to form a large number of fine holes, so that the hot air rises from the bottom through the rug and spreader layer, and is configured to heat from the bottom of the house.본 발명은 축사용 보일러의 공기 순환장치에 관한 것으로, 보일러의 내부에는 제1 열교환부를 형성하면서 그 내부에 연소실을 형성하여 고형연료를 연소시키도록 하고, 상기 연소실의 상단에 철망을 각각 다층으로 형성한 1차 및 2차 재연소망에서 상승하는 연소열을 전달받아 상승하는 불완전 연소가스가 재연소하도록 하고,상기 제1 열교환부의 물가열실은 물공급관을 통한 물을 가열시키도록 하고, 상기 연소실의 1차 재연소망 및 2차 재연소망에는 제2 열교환부 및 제3 열교환부를 설치하여 내부의 배관을 흐르는 열매를 가열하도록 하고, 상기의 제2 열교환부 및 제3 열교환부에서 가열된 열매가 통과하는 열교환관의 사이로 공급되는 공기가 접촉하여 통과하는 중에 공기가 데워지도록 하고, 상기의 연소실로 공급되는 공기는 공급팬에 의하여 유입관을 통하여 축사의 상부
