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    Dew point sensitive computer cooling system
    2.
    发明授权
    Dew point sensitive computer cooling system 失效
    露点敏感电脑冷却系统

    公开(公告)号：US4512161A

    公开(公告)日：1985-04-23

    申请号：US604348

    申请日：1984-06-25

    申请人： Max C. Logan ,  Jon T. Nordstrom

    发明人： Max C. Logan ,  Jon T. Nordstrom

    IPC分类号： G05D23/13 ,  G06F1/20 ,  H05K7/20 ,  F25D17/04 ,  B01F3/02

    CPC分类号： H05K7/20281 ,  G05D23/1393 ,  G06F1/20 ,  G06F2200/201

    摘要： A computer cooling system has a mixing valve which supplies coolant to the computer and receives hot return coolant from the computer and also chilled return coolant from a chiller intermediate the computer and the mixing valve. The mixing valve mixes the hot return coolant with the chilled return coolant to adjust the cooling system temperature. Control circuitry senses, or estimates, the dew point temperature of the computer room environment, compares it with the cooling system temperature, and adjusts the mixing valve to maintain the cooling system temperature a few degrees above the dew point temperature. A condensation sensor comprises of a light emitting diode (LED), reflective tape applied about a cooling system supply conduit, and a phototransistor is disclosed. Light from the LED is fully reflected by the reflective tape to the phototransistor in dry conditions, but only partially reflected when condensation forms on the tape. The phototransistor output drops when condensation impedes the reflectability of the tape resulting in only partial reflection of the light and this drop in the phototransistor output is sensed by circuitry associated therewith to shut down the coolant pump and the computer system.

    摘要翻译： 计算机冷却系统具有混合阀，该混合阀向计算机提供冷却剂并从计算机接收热回收冷却剂，并且冷却从位于计算机和混合阀之间的冷却器返回冷却剂。 混合阀将热回流冷却剂与冷却回流冷却剂混合，以调节冷却系统温度。 控制电路检测或估计计算机室环境的露点温度，将其与冷却系统温度进行比较，并调整混合阀以将冷却系统温度保持在露点温度以上几度。 冷凝传感器包括发光二极管（LED），围绕冷却系统供应导管施加的反射带和光电晶体管。 来自LED的光在干燥条件下被反射带完全反射到光电晶体管，但是当在磁带上形成冷凝时仅部分反射。 当结露阻止胶带的反射性导致光的部分反射时，光电晶体管输出下降，并且光电晶体管输出中的这种下降由与其相关的电路感测以关闭冷却剂泵和计算机系统。

    Dew point sensitive computer cooling system
    5.
    发明授权
    Dew point sensitive computer cooling system 失效
    露点敏感电脑冷却系统

    公开(公告)号：US4526011A

    公开(公告)日：1985-07-02

    申请号：US471953

    申请日：1983-03-03

    申请人： Max C. Logan ,  Jon T. Nordstrom

    发明人： Max C. Logan ,  Jon T. Nordstrom

    IPC分类号： G05D23/13 ,  G06F1/20 ,  H05K7/20 ,  B21D28/00 ,  F25D17/04

    CPC分类号： H05K7/20281 ,  G05D23/1393 ,  G06F1/20 ,  F24F2013/221 ,  G06F2200/201

    摘要： A computer cooling system has a mixing valve which supplies coolant to the computer and receives hot return coolant from the computer and also chilled return coolant from a chiller intermediate the computer and the mixing valve. The mixing valve mixes the hot return coolant with the chilled return coolant to adjust the cooling system temperature. Control circuitry senses, or estimates, the dew point temperature of the computer room environment, compares it with the cooling system temperature, and adjusts the mixing valve to maintain the cooling system temperature a few degrees above the dew point temperature. A condensation sensor comprised of a light emitting diode (LED), reflective tape applied about a cooling system supply conduit, and a phototransistor is disclosed. Light from the LED is fully reflected by the reflective tape to the phototransistor in dry conditions, but only partially reflected when condensation forms on the tape. The phototransistor output drops when condensation impedes the reflectability of the tape resulting in only partial reflection of the light and this drop in the phototransistor output is sensed by circuitry associated therewith to shut down the coolant pump and the computer system.

    摘要翻译： 计算机冷却系统具有混合阀，该混合阀向计算机提供冷却剂并从计算机接收热回收冷却剂，并且冷却从位于计算机和混合阀之间的冷却器返回冷却剂。 混合阀将热回流冷却剂与冷却回流冷却剂混合，以调节冷却系统温度。 控制电路检测或估计计算机室环境的露点温度，将其与冷却系统温度进行比较，并调整混合阀以将冷却系统温度保持在露点温度以上几度。 公开了一种由发光二极管（LED），围绕冷却系统供应管道应用的反射带和光电晶体管组成的冷凝传感器。 来自LED的光在干燥条件下被反射带完全反射到光电晶体管，但是当在磁带上形成冷凝时仅部分反射。 当结露阻止胶带的反射性导致光的部分反射时，光电晶体管输出下降，并且光电晶体管输出中的这种下降由与其相关的电路感测以关闭冷却剂泵和计算机系统。