FURNACE MONITORING APPARATUS AND MAINTENANCE METHOD OF THE SAME

Conventional furnace observation devices require a large-scale structure for cooling and heat insulation, and thus have a problem that the structure is difficult to simplify. It is therefore an objectof the present invention to provide a technique of a furnace observation device capable of simplifying the structure. The furnace observation device (100) that can be placed in a coke oven or removedfrom the coke oven in order to observe the inside of the coke oven is provided with an imaging device (10), a phase-change material layer (20) that covers the imaging device (10), and a refractory material layer (30) that covers the phase-change material layer (20), the refractory material layer (30) containing gypsum. 以往的炉内观察装置为了冷却及绝热而需要具有大规模的结构，因此存在难以简化结构的问题。因此，本发明的目的在于提供一种能够简化结构的炉内观察装置的技术。炉内观察装置(100)是为了观察炼焦炉内部而能够放入炼焦炉内或能够从炼焦炉内取出的炉内观测装置，其具备摄像装置(10)、覆盖摄像装置(10)的相变材料层(20)及覆盖相变材料层(20)的耐火材料层(30)，耐火材料层(30)包含石膏。