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    Electronic control means for dispensing apparatus
    1.
    发明授权
    Electronic control means for dispensing apparatus 失效
    电子控制装置用于分配装置

    公开(公告)号：US3680070A

    公开(公告)日：1972-07-25

    申请号：US3680070D

    申请日：1970-05-25

    Applicant: ECONOMICS LAB

    Inventor： NYSTUEN MARCUS I

    IPC: A47L15/44 ,  D06F39/00 ,  G05D21/02 ,  G08B21/00

    CPC classification number: G05D21/02 ,  A47L15/0055 ,  A47L15/241 ,  A47L15/4418 ,  A47L15/449 ,  D06F39/004 ,  Y10T137/034 ,  Y10T137/2499 ,  Y10T137/2509

    Abstract: An electrical bridge circuit having a conductivity cell in one leg thereof, normally biased away from the null point so that a signal is produced by the bridge when the conductivity cell is operating at a desired set point. A semiconductor switching circuit is attached to a solenoid valve to vary material added to a solution, such as soap mixed with water. A combination of switching circuit bias, the signal from the bridge and a signal platform produced by a zener diode during portions of the positive cycle of an alternating power source, normally maintain the switch in a non-conducting state but sufficient variation of the conductivity cell in a direction caused by low conductivity, or too little material in the solution, produces a sufficient signal to switch the semiconductor switch into a conducting state to operate the solenoid valve.

    Abstract translation: 一个电桥电路，其一条腿中具有一个电导率电池，通常偏离零点，以便当电导电池工作在期望的设定点时，由桥产生信号。 半导体切换电路附接到电磁阀以改变添加到溶液中的材料，例如与水混合的肥皂。 在交流电源的正周期的部分期间，开关电路偏置，来自桥的信号和由齐纳二极管产生的信号平台的组合通常将开关保持在非导通状态，但电导率单元的充分变化 在由导电性低导致的方向或溶液中的材料太少产生足够的信号以将半导体开关转换成导通状态以操作电磁阀。

    Electrical apparatus for minimizing polarization of conductivity cell electrodes
    2.
    发明授权
    Electrical apparatus for minimizing polarization of conductivity cell electrodes 失效
    用于最小化电导池电极极化的电气设备

    公开(公告)号：US3879657A

    公开(公告)日：1975-04-22

    申请号：US42708273

    申请日：1973-12-21

    Applicant: ECONOMICS LAB

    Inventor： NYSTUEN MARCUS I ,  JOHNSON ROGER A

    IPC: G01N27/04 ,  G01R27/02 ,  G01R27/22 ,  G01N27/42

    CPC classification number: G01R27/22 ,  G01N27/04 ,  G01R27/02

    Abstract: Electrical apparatus for reducing the drift in the set point of an electrical bridge type conductivity sensor utilizing a pulse producing circuit (e.g. an astable multivibrator type switching device) to provide an AC voltage of very short duration to the conductivity cell electrodes for minimizing the cumulative polarization thereof. Pulse lengthening circuitry is also provided to assure that the relatively short output pulses from the bridge circuit are of sufficient duration to properly operate apparatus for injecting an additive product into the conductive medium.

    Abstract translation: 电气设备，用于利用脉冲发生电路（例如，非稳定的多谐振荡器型开关装置）减小电桥式电导率传感器的设定点的漂移，以向导电单元电极提供非常短的持续时间的AC电压，以最小化累积极化 其中。 还提供脉冲延长电路以确保来自桥接电路的相对短的输出脉冲具有足够的持续时间以适当地操作用于将添加剂产品注入到导电介质中的装置。

    Electronic detergent dispensing system
    6.
    发明授权
    Electronic detergent dispensing system 失效
    电子洗涤剂分配系统

    公开(公告)号：US3881328A

    公开(公告)日：1975-05-06

    申请号：US33513673

    申请日：1973-02-23

    Applicant: ECONOMICS LAB

    Inventor： KLEIMOLA DAVID L ,  NYSTUEN MARCUS I ,  NYSTUEN DAVID L

    IPC: D06F39/02 ,  H03K17/292 ,  D06F33/02

    CPC classification number: D06F39/022 ,  H03K17/292

    Abstract: A detergent dispensing system for sequentially and automatically injecting various liquid products (e.g., detergents, fabric conditioners, neutralizers, etc.) into a laundry washing machine. Each liquid product is independently connected to a venturiaspirator positioned within separate carrier fluid conduits (e.g. water conduits) and product is drawn into the respective carrier fluid conduits upon passage of carrier fluid therethrough. Electrical control means, including electrical timing apparatus, triggered by a signalling device synchronized with the machine washing cycle selectively actuates and deactuates a solenoidoperated valve positioned upstream of each venturi-aspirator so as to allow injection into the carrier fluid of a predetermined quantity of each liquid product at the desired point in the machine cycle.

    Abstract translation: 一种洗涤剂分配系统，用于将各种液体产品（例如洗涤剂，织物调理剂，中和剂等）顺序地和自动地注入到洗衣机中。 每个液体产品独立地连接到位于分离的载体流体管道（例如水管道）内的文丘里抽吸器，并且当载体流体通过其中时，产品被吸入相应的载体流体管道中。 由与机器洗涤循环同步的信号装置触发的包括电定时装置的电气控制装置选择性地致动和停止位于每个文丘里抽吸器上游的电磁阀，以允许将预定量的 每个液体产品在机器周期中的所需点。

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