Washing machine with electrochemical cell

• US 4,434,629 A
• Filed: 09/30/1982
• Issued: 03/06/1984
• Est. Priority Date: 12/14/1981
• Status: Expired due to Fees

• Current Assignee: Industrie Zanussi S.P.A.
• Original Assignee: Industrie Zanussi S.P.A.
• Inventors: Bianchi, Giuseppe, Sburlino, Roberto
• Primary Examiner(s): Coe, Philip R.
• Assistant Examiner(s): Stinson, Frankie L.
• Application Number:
  US06/431,077
• Time in Patent Office: 523 Days
• Field of Search: 68/13 A, 68/207, 134/36, 134/100, 134/101, 134/102, 134/109, 422/29, 422/37
• US Class Current: 68/13.00A
• CPC Class Codes: D06F 35/003 using electrochemical cells
• CPC Class Codes: D06F 35/004 using chlorine generators

Abstract

A laundry washing machine includes a washing tube, a water supply an a decalcifier for receiving water from the water supply and for discharging softened water. A metering tank is at an upper position in the machine to receive softened water from the decalcifier. A brine tank at a lower position in the machine receives softened water from the metering tank and generates brine. An electrochemical cell is provided to generate chlorine gas. Valves are provided to selectively pass brine from the brine tank to the electrochemical cell or to the decalcifier. Chlorine gas generated in the cell is absorbed and then passed to the washing tube.

Claims

1. A laundry washing machine comprising:

a washing tub;

water supply means;

decalcifying means for receiving water from said water supply means and for discharging softened water;

a metering tank at an upper position in the machine for receiving softened water from said decalcifying means;

brine tank means at a lower position in the machine for receiving softened water from said metering tank and for generating brine;

an electrochemical cell for generating chlorine gas;

first means for selectively supplying brine from said brine tank means to said electrochemical cell;

second means for selectively supplying brine from said brine tank means to said decalcifying means during a stage of regeneration thereof;

a discharge extending from a lower portion of said washing tub;

third means connecting said electrochemical cell to said discharge;

absorption means connected to said decalcifying means to receive therefrom softened water and connected to said electrochemical cell to receive therefrom said chlorine gas, for absorbing said chlorine gas in said softened water; and

means for selectively supplying said softened water and absorbed chlorine gas into said washing tub, thereby to perform a bleaching operation.

2. A washing machine as claimed in claim 1, wherein said absorption means comprises a storage container equipped with a plurality of perforated horizontal partition walls, positioned one above the other, and said means for supplying softened water and absorbed chlorine gas comprises a lower pipe connected to the bottom of said storage container and connected, via a valve, to said washing tub at a level equal to or lower than the water filling level therein, and an upper pipe connected to the top of said storage container and connected to said washing tub at a level equal to or lower than the water filling level therein.

3. A washing machine as claimed in claim 2, further comprising an additional storage container free of partition walls, a lower pipe connected to the bottom of said additional storage container and connected to said lower pipe from said storage container at a position upstream of said valve, and an upper pipe connected to the top of said additional storage container and connected to said washing tub at a level equal to or lower than the water filling level therein.

4. A washing machine as claimed in claim 3, wherein said electrochemical cell has anode and cathode compartments, and further comprising means for connecting upper portions of said anode and cathode compartments to lower portions of said storage container and said additional storage container, respectively.

5. A washing machine as claimed in claim 4, wherein said electrochemical cell is located at a level above said storage containers.

6. A washing machine as claimed in claim 4, wherein said third means is connected solely to said cathode compartment.

7. A washing machine as claimed in claim 1, wherein said electrochemical cell includes anode and cathode compartments, and said third means is connected solely to said cathode compartment.

8. A washing machine as claimed in claim 1, further comprising switch means for connecting said electrochemical cell to an electric source, and means for controlling the level of water filled into said washing tub, said switch means being coupled to said controlling means such that said electrochemical cell is prevented from operating unless water is filled into said washing tub to a predetermined level.

9. A washing machine as claimed in claim 1, further comprising a detergent distributor connected to said washing tub for supplying thereto detergent and additive substances, means for supplying softened water from said decalcifying means to said distributor, and to said absorption means via a valve.