| 摘要 |
PROBLEM TO BE SOLVED: To prevent malodors generated on heating and regenerating of a deodorant material. SOLUTION: A connecting part of a main ventilation path 13 contg. the deodorant material 16 and an auxiliary ventilation path 18 is provided with spherical valve parts 12, 20, respectively. When a suction fan 10 is activated at the time of deodorization operation, a valve disk 124 is rolled upward by wind pressure and, on the other hand, a valve disk 204 is brought into tight contact with a valve seat 203 by its own weight. As a result, an air suction path 11, a main ventilation path 13 and a discharge path 21 are communicated. When an auxiliary fan 19 is activated at the time of heating and reproducing the deodorant material 16, the valve disk 204 is rolled upward by the wind pressure and, on the other hand, the valve disk 124 is brought into tight contact with the valve seat 123 by its own weight. As a result, the main ventilation path 13 and the auxiliary ventilation path 18 are shut off from the outside. The deodorant material 16 is heated by a magnetron 17. While the air is kept circulated in the hermetically closed wind path, the odorous components adsorbed to the deodorant material 16 are oxidation decomposed. As a result, the leakage of the smell to the outside at the time of the heating and reproducing may be prevented.
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