| 摘要 |
A device for removing airborne contaminants and inhaled biopathogens, particularly particulate or aerosol contaminants, from respired air that can be either stationary or incorporated into a garment or accessory worn upon the body. In a preferred embodiment, the device provides multiple levels of protection against inhalation of a dangerous airborne contaminant. In a preferred embodiment, a negative electrode of a portable power supply such as a battery is connected to voltage multiplier and modulation circuit and than to a discharge electrode having an electron emissive surface disposed near the wearer's airway such as, for example, on a chin guard disposed in front of the airway. The positive (counter) electrode is similarly disposed away from the airway such as, for example, near the forehead, but is electrically insulated from the wearer's body. Electrons, ejected from the electron emissive surface, transfer a negative charge to airborne particulate contaminants which are accelerated toward, and collected by, the counter electrode. The position of the electron emissive surface on the discharge electrode relative to the airway is adjustable and can be repositioned to provide optimum removal of particulate contaminants from the respired air prior to inhalation thereof. The negative charge on the wearer's body causes the negatively charged particulate contaminants to be further repelled by the wearer's peroral skin and nasal hair. One embodiment of the discharge electrode, in addition to the electron emissive surface, also includes an activated ion wind generator for improved protective efficiency against airborne biopathogens.
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