Ion exchanger, water treatment device provided with same, and hot water supply device

Patent metadata

Field	Value
Publication number	US-9701547-B2
Application number	US-201314419836-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Dec 14, 2012
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

An ion exchanger includes a sheet-shaped positive ion exchanger 2 in which binder particles 5 and positive ionic exchange resin particles 4 are mixed with each other, and a sheet-shaped porous negative ion exchanger 3 in which binder particles 7 and negative ionic exchange resin particles 6 are mixed with each other, the positive ion exchanger 2 and the negative ion exchanger 3 are bonded to each other to form an interface, and capacity of the negative ion exchanger 3 is greater than that of the positive ion exchanger 2 . Therefore, the porous ion exchanger 1 is formed and absorbing ability of ion is increased, capacity of the negative ion exchanger 3 is made greater than that of the positive ion exchanger 2 , regenerating ability of the ion exchanger with respect to absorbing ability of ion can be secured, and ion absorption and regeneration processing is carried out efficiently.

First claim

The invention claimed is:

1. An ion exchanger comprising:
a porous positive ion exchanger having binder particles and particles of positive ion exchange resin which adheres positive ions, wherein the positive ion exchanger is formed into a sheet shape; and
a porous negative ion exchanger having binder particles and particles of negative ion exchange resin which adheres negative ions, wherein the positive ion exchanger is formed into a sheet shape, wherein
the positive ion exchanger includes a first positive ion exchange layer bonded to the negative ion exchanger to form the interface, and a second positive ion exchange layer laminated on a surface of the first positive ion exchange layer opposite from the interface,
the negative ion exchanger includes a first negative ion exchange layer bonded to the positive ion exchanger to form the interface, and a second negative ion exchange layer laminated on a surface of the first negative ion exchange layer opposite from the interface,
an ion exchange capacity of the negative ion exchanger is greater than that of the positive ion exchanger,
wherein
the ion exchange capacity of the second positive ion exchange layer is greater than that of the first positive ion exchange layer, and
the ion exchange capacity of the second negative ion exchange layer is greater than that of the first negative ion exchange layer,
a film thickness of the first positive ion exchange layer is thinner than that of the second positive ion exchange layer, and
a film thickness of the first negative ion exchange layer is thinner than that of the second negative ion exchange layer,
and
the second positive ion exchange layer, the first positive ion exchange layer, the first negative ion exchange layer and the second negative ion exchange layer are laminated in order.

2. The ion exchanger according to claim 1 , wherein particle diameter of the positive ion exchange resin included in the first positive ion exchange layer is smaller than that of the positive ion exchange resin included in the second positive ion exchange layer, and particle diameter of the negative ion exchange resin included in the first negative ion exchange layer is smaller than that of the negative ion exchange resin included in the second negative ion exchange layer.

3. The ion exchanger according to claim 1 , wherein a mixing ratio of the binder particles included in the first positive ion exchange layer is equal to or greater than that of the binder particles included in the second positive ion exchange layer, and a mixing ratio of the binder particles included in the first negative ion exchange layer is equal to or greater than that of the binder particles included in the second negative ion exchange layer.

4. The ion exchanger according to claim 1 , wherein an ion exchange capacity of the second negative ion exchange layer is greater than that of the second positive ion exchange layer.

5. The ion exchanger according to claim 1 , wherein the positive ion exchanger and the negative ion exchanger include through holes.

6. The ion exchanger according to claim 1 , wherein the first positive ion exchange layer and the first negative ion exchange layer include through holes.

7. A water treatment device using the ion exchanger according to claim 1 , comprising at least one more ion exchanger, in which
the plurality of ion exchangers are placed between a pair of electrodes, the water treatment device further including:
a casing covering the electrodes and all of the ion exchangers; and
a first water inlet, a second water inlet, a first water outlet and a second water outlet formed in the casing, wherein
the plurality of ion exchangers are placed at a predetermined distance from each other,
the first water inlet and the first water outlet are provided such that water flows in a direction perpendicular to a sheet surface of the ion exchanger, and
the second water inlet and the second water outlet are provided such that water flows in a direction parallel to the sheet surface of the ion exchanger.

8. A water treatment device using the ion exchanger according to claim 1 , comprising at least one more ion exchanger, in which
the plurality of ion exchangers are placed between a pair of electrodes, the water treatment device further including:
a casing covering the electrodes and all of the ion exchangers; and
a first water inlet, a second water inlet, a first water outlet and a second water outlet formed in the casing, wherein
the plurality of ion exchangers are placed at a predetermined distance from each other,
the first water inlet and the first water outlet are provided such that water flows in a direction parallel to the sheet surface of the ion exchanger, and
the second water inlet and the second water outlet are provided such that water flows in the direction parallel to the sheet surface of the ion exchanger.

9. A hot water supply device including the water treatment device according to claim 7 .

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Uno Katsuhiko
• Sano Mitsuhiro
• Nakata Yuji
• Yamada Muneto

Classifications

• C02F2001/422

  using anionic exchangers · CPC title

• C02F2303/16

  Regeneration of sorbents, filters · CPC title

• C02F2001/427

  using mixed beds · CPC title

• B01J39/07

  in the weakly acidic form · CPC title

• B01D15/363

  Anion-exchange · CPC title