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Washing machine

A washing machine and washing water technology, applied in the field of washing machines, can solve the problems of mildew, unpredictable users, washing machine pollution, etc., and achieve the effect of weak adsorption capacity

Inactive Publication Date: 2012-05-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, hard water components such as calcium and magnesium have the property of reducing the cleaning ability of surfactants, which negatively affects cleaning performance
In addition, hard water makes it difficult to dissolve detergent, so the various parts of the washing machine are easily contaminated with detergent residue, which may cause mold and so on.
In addition, there is a problem that a trace amount of dissolved multivalent metal ions such as iron, manganese, and aluminum also interacts with the detergent, thereby reducing the cleaning ability of the surfactant
In general, in the case of household washing machines, users cannot be expected to replace the components of the washing machine on a regular basis, so there is a concern that electrolysis will shorten the life of the resin and water softener.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] figure 1 It is a block diagram of the washing machine in Embodiment 1 of this invention. exist figure 1 Among them, the washing machine includes a washing tank 1 , a water tank 15 , a drive unit 16 , a washing unit 2 , a water supply unit 3 , a drain unit 4 , a soft water unit 5 , a detergent box (pH raising unit) 6 , a pH lowering unit 7 and a control unit 8 .

[0029] Here, washing tub 1 accommodates laundry and is rotatable. The cleaning unit 2 is composed of a motor or the like that performs a physical cleaning function by agitating the washing tank 1 . Water supply unit 3 supplies washing water to water tank 15 and washing tank 1 . Drain unit 4 discharges washing water from water tank 15 and washing tank 1 . The soft water part 5 is arranged between the water supply part 3 and the water tank 15, and is filled with a weakly acidic cation exchange material having a weakly acidic cation exchange group with a point of zero charge of pH 7.5 or more and 14 or less. ...

Embodiment approach 2

[0049] In Embodiment 2, the same reference numerals are attached to the same components as those in Embodiment 1, and description thereof will be omitted, and only differences will be described. Figure 3A It is a figure which shows the supply situation of the tap water at the time of water supply before the washing|cleaning process of the washing machine concerning Embodiment 2 of this invention. Figure 3B It is a figure which shows the supply situation of the tap water at the time of water supply before the rinsing process of this washing machine.

[0050] In the flow path of Embodiment 2, there is a flow path switching valve 10 between the soft water unit 5 and the washing tub 1, and the flow path can be switched between the direction of the washing tub 1 and the direction of drainage.

[0051] Such as Figure 3A As shown, the process of performing soft water treatment by the soft water unit 5 due to alkaline conditions is the same as that of the first embodiment. At thi...

Embodiment approach 3

[0059] In Embodiment 3, the same reference numerals are attached to the same components as those in Embodiment 1, and description thereof will be omitted, and only differences will be described. Figure 4 It is a configuration diagram of a washing machine according to Embodiment 3 of the present invention.

[0060] The pH lowering unit 7 of the third embodiment is a pair of electrolytic electrodes and a control unit 8 having a voltage application function. An anode 12 serving as a pair of electrolytic electrodes is disposed at a position surrounded by a weakly acidic cation exchange material, and a cathode 13 is disposed adjacent to the anode 12 via a separator 14 .

[0061] When washing water is supplied, no voltage is applied to the pair of electrolysis electrodes. Negative charges appear on the surface of the weakly acidic cation exchange material through the action of alkaline detergent, and play the function of softening water.

[0062] On the other hand, when a DC volt...

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Abstract

A washing machine provided with: a washing tub; a water tub; a drive unit; a water supply unit; a water drain unit; a water softening unit provided between the water supply unit and the water tub and loaded with a weakly acidic cation exchange material having an isoelectric point in the pH range of 7.5 to 14, and the weakly acidic cation exchange having a weakly acidic cation exchange group, inclusive; a pH increasing unit for increasing the pH of wash water; a pH decreasing unit for decreasing the pH of the wash water; and a control unit. The control unit increases the pH of the wash water by means of the pH increasing unit while supplying the wash water, introduces the wash water into the water softening unit to decrease the hardness of the wash water, and then introduces the wash water into the washing tub. After the completion of the supply of the wash water, the control unit introduces, into the water softening unit, wash water having a pH in the range of 5.5 - 7.0, inclusive, and generated by operating the pH decreasing unit.

Description

technical field [0001] The present invention relates to a washing machine equipped with a water softener (Demineralizer). Background technique [0002] Washing water used for washing machines is usually tap water, underground water, well water, etc., and is greatly affected by the water quality of the place where the washing machine is used. In particular, hard water components such as calcium and magnesium have the property of reducing the cleaning ability of surfactants, and negatively affect cleaning performance. In addition, since hard water is difficult to dissolve detergent, various parts of the washing machine are easily contaminated with detergent residue, which may cause mold and the like. In addition, there arises a problem that a trace amount of dissolved polyvalent metal ions such as iron, manganese, and aluminum also interacts with the detergent, thereby reducing the cleaning ability of the surfactant. [0003] In order to cope with this problem, commercially ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F39/08B01J39/10B01J49/00C02F1/42C02F1/46D06F39/02
CPCA47L15/4229C02F2001/425D06F39/007C02F5/025C02F1/42C02F1/66B01J39/07B01J39/09B01J49/06B01J49/75
Inventor 南部桂安井圭子财前克德
Owner PANASONIC CORP
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