Ion Eluting Unit and Apparatus and Washing Machine Comprising Same

• US 20080299006A1
• Filed: 04/22/2005
• Published: 12/04/2008
• Est. Priority Date: 06/25/2004
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ikemizu, Mugihei
• Application Number:
  US11/629,351
• Publication Number:
  US 20080299006A1
• Time in Patent Office: Days
• US Class Current: 422/62
• CPC Class Codes: C02F 1/4606 for producing oligodynamic substances to disinfect the water
• CPC Class Codes: C02F 2201/4613 Inversing polarity
• CPC Class Codes: D06F 35/003 using electrochemical cells

Abstract

A metal ion eluting unit includes: at least one first electrode 102 serving as either a positive or negative electrode; at least one second electrode 103 serving as an electrode whose polarity is opposite to the polarity of the first electrode 102 and so arranged as to face the first electrode 102; and a driving means for applying a voltage between the first and second electrodes. The metal ion eluting unit elutes metal ions from the positive electrode by applying a voltage between the first and second electrodes while supplying water between the first and second electrodes. The polarities of the first and second electrodes are reversed periodically, and the current density of a current flowing between the first and second electrodes is controlled to be a predetermined value or more.

Claims

1. A metal ion eluting unit comprising:

at least one first electrode serving as either a positive or negative electrode;

at least one second electrode serving as an electrode whose polarity is opposite to a polarity of the first electrode and so arranged as to face the first electrode; and

a driving means for applying a voltage between the first and second electrodes, the metal ion eluting unit eluting metal ions from the positive electrode by applying a voltage between the first and second electrodes while supplying water between the first and second electrodes, wherein polarities of the first and second electrodes are reversed periodically, and wherein a current density of a current flowing between the first and second electrodes is controlled to be a predetermined value or more.

21. An apparatus comprising the metal ion eluting unit according to claim 1.

2. (canceled)

3. (canceled)

4. (canceled)

5. (canceled)

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7. (canceled)

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11. (canceled)

12. (canceled)

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14. (canceled)

15. A metal ion eluting unit comprising:

at least one first electrode serving as either a positive or negative electrode;

at least one second electrode serving as an electrode whose polarity is opposite to a polarity of the first electrode and so arranged as to face the first electrode;

a driving means for applying a voltage between the first and second electrodes to elute metal ions;

a water quality detector for detecting water quality; and

a control portion for reversing the polarities of the first and second electrodes and also controlling at least one of the voltage and current toward the first and second electrodes based on a result of detection performed by the water quality detector.

16. The metal ion eluting unit according to claim 15,

wherein the water quality detector detects water quality by detecting at least one of the voltage and current between the first and second electrodes.

17. The metal ion eluting unit according to claim 15,

wherein the water quality detector detects electric conductivity of water, and wherein the control portion compares the electric conductivity detected by the water quality detector with a predetermined value, which is equal to or more than 250 μ

S/cm, and performs constant-current control when the electric conductivity is less than the predetermined value and performs constant-voltage control when the electric conductivity is equal to or more than the predetermined value.

18. The metal ion eluting unit according to claim 15,

wherein the control portion controls the current density between the first and second electrodes to be 0.07 mA/mm² or more to prevent scale from depositing on at least one of the first and second electrodes.

19. The metal ion eluting unit according to claim 15,

wherein the control portion controls the current density between the first and second electrodes to be 0.11 mA/mm² or more to prevent scale from depositing on at least one of the first and second electrodes.

20. The metal ion eluting unit according to claim 15,

wherein the first and second electrodes contain silver.

22. An apparatus comprising the metal ion eluting unit according to claim 15.

23. An apparatus comprising the metal ion eluting unit according to claim 16.

24. An apparatus comprising the metal ion eluting unit according to claim 17.

25. An apparatus comprising the metal ion eluting unit according to claim 18.

26. An apparatus comprising the metal ion eluting unit according to claim 19.

27. An apparatus comprising the metal ion eluting unit according to claim 20.