PROBLEM TO BE SOLVED: To provide an air cleaning system that generates heat by energization, has a positive resistance-temperature characteristic, can set the Curie point temperature at any temperature, and can heat-efficiently clean the air in a short period of time.SOLUTION: The air cleaning system comprises: a heating-element housing-device 300 in which a porous-resistance molded-body 100 having a porosity within a range of 5% to 50% and having a positive resistance-temperature characteristic, obtained by mixing aluminum powder, graphite powder, gairome clay powder, and wood flour into a sintering raw-material mixture, adding, to the whole sintering raw-material mixture, water and/or binder that does not cause movement due to the difference in density, kneading the same, subjecting to molding by applying pressure, and subjecting to sintering the same, and a platinum group catalyst 19 dissolved with inorganic solvent and/or organic solvent are integrated together by melt-spraying metal onto both sides of the porous-resistance molded-body 100 to make it into electrode and have it support the platinum group catalyst, and housed in a housing 310 and a heat exchanger 400 in which a high-temperature cleaned-air is introduced from the housing 310 of the heating-element housing-device 300, and during the period until the cleaned-air is discharged, heat-energy is supplied to the to-be-clean treated air supplied to the housing 310 of the heating-element housing-device 300.COPYRIGHT: (C)2016,JPO&INPIT【課題】通電によって発熱し、正の抵抗温度特性を有し、任意の温度にそのキュリー点温度を設定でき、短時間で、熱効率よく空気を浄化できること。【解決手段】アルミニウム粉、黒鉛粉、蛙目粘土粉、木粉を混合した焼結原料混合物とし、前記焼結原料混合物の全体に対して、比重の違いによって移動が生じない水及び/またはバインダを加えて混練し、圧力を加えて成形し、それを焼結して5%~50%の範囲内の空隙を有する正の抵抗温度特性を有する多孔質抵抗成型体100と、その両側に金属を溶射させて電極とし、多孔質抵抗成型体100に担持させた無機溶剤及び/または有機溶剤で溶かした白金族触媒19とを一体化し、ハウジング310に収容した発熱体収容装置300と、発熱体収容装置300のハウジング310から高温度の浄化空気を導入し、浄化空気が排出されるまでの間に、発熱体収容装置300のハウジング310に供給される浄化処理すべき空気に熱エネルギを供給する熱交換器400を有する。【選択図】図5
