Title:
WASHING MACHINE
Document Type and Number:
WIPO Patent Application WO/2011/016197
Kind Code:
A1
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 a weakly acidic cation exchange group having an isoelectric point in the pH range of 7.5 - 14, 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.
Inventors:
NAMBU KEI
YASUI KEIKO
ZAIZEN KATSUNORI
YASUI KEIKO
ZAIZEN KATSUNORI
Application Number:
PCT/JP2010/004710
Publication Date:
February 10, 2011
Filing Date:
July 23, 2010
Export Citation:
Assignee:
PANASONIC CORP (JP)
NAMBU KEI
YASUI KEIKO
ZAIZEN KATSUNORI
NAMBU KEI
YASUI KEIKO
ZAIZEN KATSUNORI
International Classes:
D06F39/08; B01J39/10; B01J49/00; C02F1/42; C02F1/46; D06F39/02
Foreign References:
| JP2003117554A | 2003-04-22 | |||
| JP2005161144A | 2005-06-23 |
Other References:
See also references of EP 2463436A4
Attorney, Agent or Firm:
NAITO, Hiroki et al. (JP)
Hiroki Naito (JP)
Hiroki Naito (JP)
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