| 摘要 |
PURPOSE:To remove a volatile oil component, an offensive smell and other substance contaminating the open air from exhaust gas, smoke or contaminated air by adsorption by forming the filter and/or fan mounted on a ventilation port from a molded porous plastic material containing zeolite. CONSTITUTION:A filter 3 is attached to the front surface of a housing in a freely detachable manner and a fan 7 is provided to the rotary shaft of the motor 5 attached in the housing 1. The filter 3 or/and the fan 7 is formed from a molded porous plastic material containing zeolite. By this constitution, a volatile oil component, an offensive smell, CO2, and other substance contaminating the open air can be adsorbed on this ventilation catalyst device and removed and it is prevented that exhaust gas, smoke or contaminated air is discharged to the outside to contaminate the open air. |
