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    • 29. 发明授权
    • Frozen carbonated beverage apparatus and method and control system
therefor
    • 冷冻碳酸​​饮料设备及其方法和控制系统
    • US5095710A
    • 1992-03-17
    • US495876
    • 1990-03-19
    • William J. BlackJoseph W. KiefferDarrell D. BrownTom D. Tagliapietra
    • William J. BlackJoseph W. KiefferDarrell D. BrownTom D. Tagliapietra
    • A23G9/04B67D1/00B67D1/08G07F13/06
    • B67D1/0861A23G9/045B67D1/0016G07F13/065B67D2210/00118B67D2210/0012
    • The present invention concerns improvements in the electronic control of frozen carbonated beverage machines and improvements in electric defrost heaters used therein. A control scheme is shown that provides for accurately determining the viscosity of a semi-frozen beverage as a function of the torque of a drive motor used in the harvesting and mixing thereof. The torque is first calculated based upon the current and voltage to the motor and the phase difference there between. The torque is adjusted to compensate for motor efficiency after which the net torque value is converted to a viscosity scale. The viscosity scale has a zero value relating to the net torque experienced by the motor when the beverage is known to be completely liquid. Viscosity is maintained within a narrow range based upon pre-defined three level low, medium and high viscosity sets, and wherein compressor short-cycling is eliminated. Recalibration control is shown for reestablishing a new viscosity zero value to allow for changes in the net torque at the beverage known liquid point that can result from machine wear, inaccurate initial calibration and the like. A safety defrost control is shown for reducing potential hazards associated with the use of electric defrost heaters. Improved electrical defrost heaters are shown that allow for easy removal and replacement thereof.
    • 本发明涉及冷冻碳酸饮料机的电子控制和其中使用的电除霜加热器的改进。 示出了控制方案,其提供了根据在其收获和混合中使用的驱动马达的扭矩来准确地确定半冷冻饮料的粘度。 首先根据电动机的电流和电压及其间的相位差来计算转矩。 调整扭矩以补偿电机效率,然后将净扭矩值转换为粘度标度。 当已知饮料是完全液体时,粘度标度具有与电动机经历的净转矩相关的零值。 基于预定义的三级低,中和高粘度组,粘度保持在窄范围内,并且其中消除了压缩机短路循环。 显示重新校准控制,用于重建新的粘度零值,以允许由机器磨损,不准确的初始校准等导致的饮料已知液点处的净扭矩变化。 显示安全除霜控制,以减少与使用电除霜加热器相关的潜在危险。 示出了改进的电除霜加热器,其允许容易地移除和更换它们。