| 摘要 |
PROBLEM TO BE SOLVED: To improve detection precision of alcohol concentration by delivering air that is maintained as an undisturbed air flow containing exhalation breathed in an alcohol detection device. SOLUTION: The alcohol detection device 101 composed of a combined gas sensor includes a spiral guide groove 24 formed on the inner circumference of a cylindrical device body 7. Exhalation breathed in the detector by a driver M is stirred by a fan 6 to produce exhalation-mixed air A and then flow in the device body 7. The exhalation body 7 delivers the exhalation-mixed air A flowing into the guide groove 24 by maintaining the undisturbed air flow. COPYRIGHT: (C)2011,JPO&INPIT
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