Indoor air quality and ventilation assessment monitoring device
April 21, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and an apparatus for monitoring the subjection of individual people to harmful gases Apparatus and method for measuring the concentration of gases Detection and control system based on ambient air quality Sensor array for toxic gas detection Cylinder piston apparatus for a suspension system Regulation of atmospheric conditions within a confined space Monitoring and alarm apparatus Air quality indicator and control for air quality machine Air quality conditioning system Method and apparatus for controlling ventilation rates and indoor air quality in an HVAC system InventorApplicationNo. 214194 filed on 03/17/1994US Classes:700/276, HVAC control73/23.2, GAS ANALYSIS73/31.01, Ambient air73/31.02, Impurity73/863.01, Automatic control73/863.21, With constituent separation250/430, With valve or pump actuator340/632, Gas436/133, Inorganic carbon compounds436/137, Fuel/air mixture or exhaust gas analysis436/138, Dissolved or trace oxygen or oxygen content of a sealed environment454/256Including automatic control meansExaminersPrimary: Voeltz, Emanuel T.Assistant: Smith, Demetra R. International ClassesF24F 003/16F24F 007/00 AbstractA monitoring device system and a method for controlling ventilation in an enclosed or confined environment by regulating the effective ventilation rate, air exchange rate, mixing factors, stratification of air within the confined area, the percentage of outside air which is introduced (when possible), the percentage of recirculated air, mean air life, air half-life are described. The device may be used for controlling an HVAC system so that air quality conforms to predetermined air quality standards. The monitoring device consists of a multiport sample collection system and one or more sensors to detect determinants of air quality. The method of control uses a CPU to regulate fans, dampers, and other systems to maintain the air quality within predetermined ranges, based upon the monitoring data. A tracer gas, preferably CO2, is used to determine system parameters. Measurement of additional gases and particulates and local ventilation control responsive to such toxicants is limited only by the availability of suitable detection methods.Other References
Field of SearchGas, vapor, or moisture absorbing or collectingPlus air temperature sensor exerting a control By means of a solid body in contact with a fluid Inorganic carbon compounds Fuel/air mixture or exhaust gas analysis Molecular oxygen Impurity GAS ANALYSIS Ambient air Automatic control Quantity or rate of flow responsive With constituent separation Including automatic control means With valve or pump actuator With cleaning means Gas Catalytic detector |
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