Series connected solenoid appliance control valve assembly

Details Series connected solenoid appliance control valve assembly Series connected solenoid appliance control valve assembly

1981-05-13

1984-05-29

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

13761411, 251 30, 251 38, 251 45, 251141, 134 57D, 134 58D, 335267, F16K 3102

Patent

active

044508638

ABSTRACT:
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 control means 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, they are electrically in series. The series connection of the coils allows the coils to be configured such that a significant saving in the cost of coil wire is achieved over parallel connected coils. 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.

REFERENCES:
patent: 2500750 (1950-03-01), Halenza
patent: 2550297 (1951-04-01), Ray
patent: 2587356 (1952-02-01), McPherson
patent: 3035611 (1962-05-01), Collins
patent: 3378031 (1968-04-01), Hatashita
patent: 3472277 (1969-10-01), Reinicke et al.
patent: 3646948 (1972-03-01), Athey
patent: 3818398 (1974-06-01), Barbier et al.
patent: 3872878 (1975-03-01), Kozel et al.

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