| 摘要 |
An automatic dishwasher includes a water inlet line, a flow control valve assembly, a wash water introducing means for introducing wash water into a container which is adapted to receive dishes, and a control for selectively controlling the flow control valve assembly. The flow control valve assembly includes a first flow control valve which is selectively actuated by a first solenoid coil and a second flow control valve which is selectively actuated by a second solenoid coil. A first ferromagnetic member is disposed between a first end of the solenoid coils and a second ferromagnetic member is disposed between the other end of the solenoid coils. The solenoid coils are so interconnected that when an actuating potential is applied across them, (a) they generate magnetic fields of the opposite polarity, and (b) they are electrically in series. Creating the magnetic fields with the opposite polarity causes a closed magnetic flux path through both solenoid coils and both ferromagnetic members such that the coils act in concert to boost the strength of the magnetic fields that they generate. The series and the opposite magnetic polarity connection of the coils allows the coils to be configured such that a significant saving in the cost of coil wire is achieved over electrically parallel or like polarity connected coils.
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