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Arrangement for controlling detergent addition in washing machines

  • US 5,253,494 A
  • Filed: 02/07/1992
  • Issued: 10/19/1993
  • Est. Priority Date: 02/27/1991
  • Status: Expired due to Fees
First Claim
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1. A control arrangement for washing machines, in particular clothes washing machines or combination clothes washing and drying machines having a wash tub, a detergent dispenser means provided with a plurality of separate compartments for containing various wash products and rinse aids to be added into the wash tub, a rotating compartment selector means, and driving means to displace the selector into various operational positions so as to enable in-flowing supply water to selectively flow through each one of said dispenser compartments into the wash tub, said clothes washing machine also having a plurality of operational component parts that are adapted to be energized and de-energized under the control of a electronic microprocessor means for controlling sequences of selected washing steps, said control arrangement comprising switching means (17, 18, 19, 20) operable by said rotating compartment selector means (15) each associated with a corresponding control position of said rotating compartment selector means, and electrical circuit elements (48, 49, 50, 51) connected to respective operational component parts and respective switching means (17, 18, 19, 20), wherein at least one of said operational component parts (42, 43, 44, 45) is associated with a respective one of the switching means and its corresponding circuit element so as to be selectively switchable on and off by said microprocessor means (40).

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