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    • 9. 发明授权
    • Cold storage doorway with airflow control system and method
    • 具有气流控制系统和方法的冷藏门口
    • US08287337B2
    • 2012-10-16
    • US11649513
    • 2007-01-04
    • Peter SmithDaniel J. RhynerCarl E. Steele
    • Peter SmithDaniel J. RhynerCarl E. Steele
    • F24F9/00
    • A61N7/02A61B2017/00084A61B2017/00128A61B2017/00734A61B2017/00774A61M37/0092
    • A conditioned vestibule, control system, and method are disclosed for use with a cold storage doorway that separates warm and cold sides. A heater warms an air stream discharged across the doorway by the vestibule. A control unit operates the heater to maintain an air stream temperature. The control unit continuously monitors the air stream temperature and operates the heater to maintain the air stream temperature in a non-saturated state based on a humidity ratio. One embodiment calculates first and second temperatures based, respectively, warm and cold side tangent lines to a psychrometric saturation curve and based on the humidity ratio. The tangent lines are based on humidity and temperature sensed on the warm and cold sides. The air stream is warmed to at least the greater of the first and second temperatures. One embodiment controls air flow to adjust the humidity ratio to more efficiently operate the vestibule.
    • 公开了一种调节前庭,控制系统和方法,用于分开冷和冷侧的冷藏入口。 加热器通过前庭加热通过门口排出的气流。 控制单元操作加热器以维持气流温度。 控制单元连续地监视气流温度并操作加热器,以基于湿度比将气流温度保持在非饱和状态。 一个实施例分别计算基于湿度比的基于温湿度饱和曲线的暖和冷侧切线的第一和第二温度。 切线基于在温暖和冷的两侧感测到的湿度和温度。 空气流被加热到至少第一和第二温度中的较大值。 一个实施例控制空气流量以调节湿度比以更有效地操作前庭。