Ion removal device

Abstract

An ion removal device includes: a container portion; a first electrode that adsorbs ions in a liquid; a first electrode guide member that has a first electrode holding portion that holds the first electrode and a first electrode guide member flow inlet that causes the liquid to flow into the first electrode holding portion; a second electrode that adsorbs ions in the liquid; a second electrode guide member that has a second electrode holding portion that holds the second electrode and a second electrode guide member flow outlet that causes the liquid to flow out from the second electrode holding portion; and a partition member that has a liquid permeability that allows the liquid to pass through and electrical insulation, and is disposed between the first electrode and the second electrode. Inside the container portion, the first electrode guide member, the partition member, and the second electrode guide member are disposed so that the liquid to be treated passes through in the order of the first electrode guide member, the partition member, and the second electrode guide member.

Description

Technical Field

[0001] This disclosure relates to an ion removal device. Background Technology

[0002] Previously, ion removal devices were known for desalinating liquids such as water to remove ionic substances. For example, Patent Document 1 discloses a deionization device utilizing the principle of an electric double-layer capacitor. This electric double-layer capacitor has the following structure: with a spacer sandwiched between two insulating layers to ensure a flow path, gaskets housing electrodes are arranged on both sides of the insulating layers, and a side plate housing a current collector is mounted on the outside of the electrodes. The inlet and outlet of the liquid to be treated are formed by a spacer that connects the outside to the inside of the side plate. Liquid flowing into the capacitor from the inlet is deionized as it passes through the flow path formed by the spacer, and flows out of the capacitor from the outlet.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2012-086189 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, in the deionization device disclosed in Patent Document 1, it is possible that treated water passing through the spacer in a state of not contacting the electrodes and thus not being treated may be generated, resulting in a decrease in ion removal performance.

[0008] This disclosure was made to solve the problems described above, and its purpose is to provide an ion removal apparatus that can improve ion removal performance by suppressing the treated water that is not in contact with the electrodes.

[0009] Solution for solving the problem

[0010] The ion removal apparatus disclosed herein is an ion removal apparatus for desalinating liquids, comprising: a container section; a first electrode that adsorbs ions in the liquid; a first electrode guide having a first electrode holding portion for holding the first electrode and a first electrode guide inlet for allowing the liquid to flow into the first electrode holding portion; a second electrode that adsorbs ions in the liquid; a second electrode guide having a second electrode holding portion for holding the second electrode and a second electrode guide outlet for allowing the liquid to flow out from the second electrode holding portion; and a separator having liquid permeability and electrical insulation, disposed between the first electrode and the second electrode. Inside the container section, the first electrode guide, the separator, and the second electrode guide are configured such that the liquid to be treated passes through in the order of the first electrode guide, the separator, and the second electrode guide.

[0011] The effects of the invention

[0012] According to this disclosure, inside the container section, the first electrode guide, the isolator, and the second electrode guide are configured such that the liquid to be treated passes through the first electrode guide, the isolator, and the second electrode guide in sequence. Therefore, it is possible to suppress the water to be treated that does not come into contact with the electrodes and to improve the ion removal performance. Attached Figure Description

[0013] Figure 1 This is a perspective view showing the ion removal apparatus of Embodiment 1 in a decomposed manner.

[0014] Figure 2 This is a longitudinal sectional view showing the ion removal apparatus of Embodiment 1.

[0015] Figure 3 This is a perspective view showing the state of the cover of the ion removal device of Embodiment 1 as viewed from below.

[0016] Figure 4 This is a longitudinal sectional view showing the ion removal apparatus of Embodiment 2.

[0017] Figure 5 This is a cross-sectional view showing the first electrode guide of the ion removal apparatus of Embodiment 2.

[0018] Figure 6 This is a cross-sectional view showing the second electrode guide of the ion removal apparatus of Embodiment 2.

[0019] Figure 7 This is a top view showing the third current collector of the ion removal device in Embodiment 2. Detailed Implementation

[0020] Hereinafter, the ion removal apparatus of the embodiments will be described with reference to the accompanying drawings. In the following drawings, structures marked with the same reference numerals are the same or equivalent structures, and are common throughout the embodiments described below. In addition, the size relationships of the constituent components in the drawings may sometimes differ from the actual figures. Moreover, the arrangement of the constituent elements shown throughout the specification is merely illustrative and is not limited to the arrangement described in the specification. Sometimes, not all the devices described in the specification may be included. In particular, the combination of constituent elements is not limited to the combinations in each embodiment, and constituent elements described in other embodiments can be applied to another embodiment. Hereafter, the term "water" as the liquid to be processed by the apparatus will be used without distinction to refer to raw water before treatment in the ion removal process, water treated in the ion removal process, or wastewater during regeneration where the ion concentration increases due to treatment in the ion desorption process after ion removal.

[0021] Implementation Method 1

[0022] Figure 1 This is a perspective view showing the ion removal apparatus 100 of Embodiment 1 in an exploded view. Figure 2 This is a longitudinal sectional view showing the ion removal apparatus 100 of Embodiment 1. Figure 3 This is a perspective view showing the state of the cover 7 of the ion removal device 100 of Embodiment 1 as viewed from below.

[0023] The ion removal apparatus 100 of this embodiment is an apparatus for desalinating liquids such as water. Figure 1 and Figure 2 As shown, the ion removal device 100 includes a container section 1, a first current collector 20, a first electrode guide 3, a first electrode 40, an isolator 5, a second electrode guide 6, a second electrode 41, a second current collector 21, a cover 7, a pressing part 8, a first terminal section 90, and a second terminal section 91. Inside the container section 1, the first current collector 20, the first electrode guide 3, the isolator 5, the second electrode guide 6, and the second current collector 21 are stacked sequentially from the bottom up, and the cover 7 is disposed on the upper part of the container section 1. The pressing part 8 is disposed between the second current collector 21 and the cover 7. The ion removal device 100 adsorbs ions by holding the first electrode 40 held on the first electrode guide 3 and the second electrode 41 held on the second electrode guide 6, thereby removing ions dissolved in water.

[0024] The container section 1 is a bottomed cylindrical shape with an opening at one end. A cover 7 is installed at the opening of the container section 1. A container section inlet 10 for allowing liquid to flow from the outside into the inside of the container section 1 and a container section outlet 11 for allowing liquid to flow from the inside of the container section 1 outward are provided on the cylindrical surface of the container section 1. The container section inlet 10 is located at the lower part of the cylindrical surface. The container section outlet 11 is located at the upper part of the cylindrical surface. As an example, the container section inlet 10 and the container section outlet 11 are positioned facing each other radially when the container section 1 is viewed from above. The container section 1 can be made of any material as long as it is cylindrical. Furthermore, as... Figure 2 As shown, a first threaded portion 12 for engaging the cover 7 is formed on the outer peripheral surface of the upper end of the container portion 1.

[0025] The first current collector 20 is a circular plate and contacts the first electrode 40. The first terminal portion 90 is connected to an external power source (not shown) outside the container portion 1 and to the first current collector 20 inside the container portion 1. That is, the first current collector 20 is connected to the external power source (not shown) via the first terminal portion 90 and is powered from the first terminal portion 90. During the ion removal process performed by the ion removal apparatus 100, the first current collector 20 supplies charge to the first electrode 40 held in the first electrode guide 3. Furthermore, during the ion desorption process performed by the ion removal apparatus 100, the first current collector 20 collects charge when discharging from the first electrode 40.

[0026] The materials constituting the first current collector 20 may include graphite sheets, flexible graphite (Grafoil), conductive rubber, or sheets and plates of metal sandwiched or covered by these materials. Thus, the first current collector 20 is formed of a material that is both conductive and flexible. The first terminal portion 90 can be directly or indirectly connected to the first current collector 20, or a plate or wire made of a conductive material can be disposed between the first terminal portion 90 and the first current collector 20. A portion of the first terminal portion 90 is disposed on the outside of the container portion 1 or the cover 7, and another portion is disposed on the inside of the container portion 1 or the cover 7. Figure 2 In the case shown, the first terminal portion 90 is provided through the bottom surface of the container portion 1. The ion removal device 100 realizes the supply of electricity to the first electrode 40 and the discharge from the first electrode 40 through the first terminal portion 90.

[0027] The first electrode guide 3 is cylindrical in shape. The first electrode guide 3 includes a first electrode holding portion 30b and a first electrode guide inlet 30a. The first electrode holding portion 30b is the part surrounded by the inner circumferential surface of the cylinder, and a first electrode 40 is disposed thereon. The first electrode guide inlet 30a is an opening formed through the cylindrical surface, serving as a flow path for liquid to flow into the first electrode holding portion 30b. An anti-outflow member may also be provided in the first electrode guide inlet 30a to prevent the first electrode 40 disposed in the first electrode holding portion 30b from flowing out. The anti-outflow member is a component formed of an insulating resin mesh, a sponge filter, an insulatingly coated metal mesh, non-woven fabric, filter paper, etc. The first electrode guide 3 can be disposed inside the cylindrical container portion 1, and the outer and inner edges of the first electrode guide 3 may have different shapes. The first electrode guide 3 is made of an insulating material, such as resin or rubber. Alternatively, a sealing material such as a filler or O-ring can be provided between the first electrode guide 3 and the first current collector 20, the isolator 5, and the second electrode guide 6, which are disposed adjacent to the first electrode guide 3. In this case, a groove for providing the sealing material can also be machined into the first electrode guide 3.

[0028] The isolator 5 is in the shape of a circular plate. The isolator 5 prevents a short circuit between the first electrode 40 held in the first electrode guide 3 and the second electrode 41 held in the second electrode guide 6. Materials constituting the isolator 5 include, for example, filter paper, a filter, a porous membrane, nonwoven fabric, a foaming agent, etc. These materials possess both liquid permeability and electrical insulation properties, allowing liquids to pass through while preventing conductive materials from passing through.

[0029] The second electrode guide 6 is cylindrical. The second electrode guide 6 includes a second electrode holding portion 60b and a second electrode guide outlet 60a. The second electrode holding portion 60b is the part surrounded by the inner circumferential surface of the cylinder, and a second electrode 41 is disposed thereon. The second electrode guide outlet 60a is an opening formed through the cylindrical surface, serving as a flow path for liquid to flow out of the second electrode holding portion 60b. An anti-outflow member can also be provided at the second electrode guide outlet 60a to prevent the second electrode 41 disposed in the second electrode holding portion 60b from flowing out. The anti-outflow member is a component formed from an insulating resin mesh, a sponge filter, an insulatingly coated metal mesh, non-woven fabric, filter paper, etc. The second electrode guide 6, like the first electrode guide 3, can be disposed inside the cylindrical container portion 1, or the outer and inner edges of the second electrode guide 6 can have different shapes. The second electrode guide 6 is made of an insulating material, such as resin or rubber. Alternatively, a sealing material such as a filler or O-ring can be provided between the second electrode guide 6 and the second current collector 21, the isolator 5, and the first electrode guide 3, which are disposed adjacent to the second electrode guide 6. In this case, a groove for providing the sealing material can also be machined into the second electrode guide 6.

[0030] The second current collector 21 is a circular plate and contacts the second electrode 41. The second terminal portion 91 is connected to an external power source (not shown) outside the container portion 1 and to the second current collector 21 inside the container portion 1. That is, the second current collector 21 is connected to an external power source (not shown) via the second terminal portion 91 and is powered from the second terminal portion 91. In the ion removal process performed by the ion removal apparatus 100, the second current collector 21 supplies charge to the second electrode 41 held in the second electrode guide 6. In addition, in the ion desorption process performed by the ion removal apparatus 100, the second current collector 21 collects electricity when discharging from the second electrode 41.

[0031] The materials used to constitute the second current collector 21 include, for example, graphite sheets, flexible graphite (Grafoil), conductive rubber, or sheets and plates of metal sandwiched or covered by these materials. Thus, the second current collector 21 is formed of a material that is both conductive and flexible. The second terminal portion 91 can be directly or indirectly connected to the second current collector 21, or a plate or wire made of a conductive material can be disposed between the second terminal portion 91 and the second current collector 21. A portion of the second terminal portion 91 is disposed on the outside of the container portion 1 or the cover 7, and another portion is disposed on the inside of the container portion 1 or the cover 7. Figure 2 In the case shown, the second terminal portion 91 is provided through the cover 7 and the pressing portion 8. The ion removal device 100 realizes the energization to the second electrode 41 and the discharge from the second electrode 41 through the second terminal portion 91.

[0032] In the ion removal process, the first electrode 40 and the second electrode 41 adsorb ions from water by receiving a charge supply from the power source, and release the adsorbed ions in the ion desorption process. Here, the first electrode 40 becomes positively or negatively charged through the charge supply. On the other hand, the second electrode 41 carries a charge of the opposite polarity to the first electrode 40. The positively charged electrode adsorbs anions. Conversely, the negatively charged electrode adsorbs cations. That is, the first electrode 40 and the second electrode 41 adsorb ions of the opposite polarity to the electrode's polarity. For example, to increase the capacitance as a capacitor, the first electrode 40 and the second electrode 41 use conductive materials such as activated carbon, porous carbon, porous conductive beads, and porous metals, which are conductive and have a large specific surface area. The conductive materials can be in powder, granular, or fibrous form. When the conductive material is in powder or granular form, the outer diameter is 100 nm to 10 mm. When the conductive material is in fibrous form, the thickness is 1 μm to 50 μm. In addition, cloths or filters formed using these conductive materials are sometimes used as the first electrode 40 and the second electrode 41.

[0033] The lid 7 is concave and is installed at the upper end of the container part 1 to block the opening of the container part 1. For example... Figure 2 and Figure 3 As shown, a second threaded portion 70 is formed on the inner circumferential surface of the cover 7, which engages with the first threaded portion 12 of the container portion 1. Figure 2 As shown, the cover 7 is installed on the container part 1 by inserting the upper part of the container part 1 into the recess and screwing the second threaded part 70 into it, which then engages with the first threaded part 12. Alternatively, a sealing material such as packing or an O-ring may be provided between the cover 7 and the container part 1. In this case, a groove for providing the sealing material may also be formed in the cover 7 or the container part 1.

[0034] Additionally, a pressing part 8 is provided on the cover 7. This pressing part 8 protrudes from the inner bottom surface of the recess toward the interior of the container section 1 and is inserted into the interior of the container section 1 from the top. As an example, the pressing part 8 is integrally formed with the cover 7. By integrally forming the pressing part 8 with the cover 7, the assembly of the ion removal device 100 becomes easier. However, the pressing part 8 can also be a structure using a different component than the cover 7. The pressing part 8 presses down on the first electrode 40 and the second electrode 41 housed inside the container section 1 by joining the cover 7 to the container section 1. As a result, the contact area and contact points between the first electrode 40 and the first current collector 20, and between the second electrode 41 and the second current collector 21, increase, the resistance of the ion removal device 100 decreases, and thus the ion removal efficiency of the ion removal device 100 is improved. Furthermore, when the first electrode 40 and the second electrode 41 are made of powdered, granular, or fibrous conductive materials, the contact area and contact points between the constituent components of the first electrode 40 and the second electrode 41 are increased, the resistance of the first electrode 40 and the second electrode 41 is reduced, thereby improving the ion removal efficiency. Additionally, a sealing material such as a filler or an O-ring can be provided between the pressing part 8 and the second current collector 21. In this case, a groove for providing the sealing material can be formed in the pressing part 8 or the second current collector 21. Furthermore, the sealing material is positioned in a location that does not obstruct contact between the second terminal part 91 and the second current collector 21. Alternatively, when the pressing part 8 and the cover 7 are not integrated, a sealing material such as a filler or an O-ring can be provided between the pressing part 8 and the cover 7. In this case, a groove for providing the sealing material can be formed in the pressing part 8 or the cover 7.

[0035] In the ion removal apparatus 100, after the cover 7 is installed on the container section 1 and the components inside the container section 1 are pressed by the pressing part 8, the positions of the container section inlet 10 and the first electrode guide inlet 30a, and the positions of the container section outlet 11 and the second electrode guide outlet 60a, are respectively aligned. Thus, the liquid flow path of the ion removal apparatus 100 is formed through the container section 1, the first electrode guide 3, the first electrode 40, the separator 5, the second electrode 41, and the second electrode guide 6. Liquid flows in from the container section inlet 10, passes through the first electrode guide inlet 30a, and flows into the first electrode 40. Liquid reaching the first electrode 40 passes through the separator 5 and reaches the second electrode 41. Liquid reaching the second electrode 41 flows out of the container section 1 through the second electrode guide outlet 60a and the container section outlet 11. Thus, the liquid comes into contact with both electrodes, preventing a decrease in the ion removal performance of the ion removal apparatus 100.

[0036] As described above, the ion removal apparatuses 100 and 200 of this embodiment include: a container section 1 forming a shell; a first electrode 40 for adsorbing ions in a liquid; a first electrode guide 3 having a first electrode holding section 30b for holding the first electrode 40 and a first electrode guide inlet 30a for liquid to flow into the first electrode holding section 30b; a second electrode 41 for adsorbing ions in a liquid; a second electrode guide 6 having a second electrode holding section 60b for holding the second electrode 41 and a second electrode guide outlet 60a for liquid to flow out from the second electrode holding section 60b; and a separator 5 disposed between the first electrode 40 and the second electrode 41. Inside the container section 1, the first electrode guide 3, the separator 5, and the second electrode guide 6 are arranged such that the liquid to be treated passes through the first electrode guide 3, the separator 5, and the second electrode guide 6 in that order.

[0037] In other words, according to the ion removal apparatus 100 of this embodiment 1, the liquid to be treated passes through the ion removal apparatus 100 in the order of the first electrode 40, the separator 5, and the second electrode 41. Therefore, the liquid passing through the interior of the container section 1 can come into contact with the first electrode 40 and the second electrode 41. As a result, the ion removal performance of the ion removal apparatus 100 can be improved. In addition, the container section 1 is cylindrical, so when the cover 7 is provided and the components inside the container section 1 are pressed by the pressing part 8, deformation such as deflection of the cover 7 and the container section 1 can be suppressed. Furthermore, a second threaded part 70 is provided on the cover 7 and a first threaded part 12 is provided on the container section 1. By screwing the second threaded part 70 into the first threaded part 12, the container section 1 can be joined to the cover 7 and the container section 1 can be pressed by the pressing part 8, so assembly is easy.

[0038] Furthermore, in the ion removal apparatus 100 of this embodiment 1, a pressing part 8 is disposed between the cover 7 and the second current collector 21, but the pressing part 8 may also be disposed between the first current collector 20 and the container part 1. In this case, the first terminal part 90 may also be disposed through the pressing part 8. Additionally, a sealing material such as a filler or an O-ring may be provided between the pressing part 8 and the container part 1. In this case, a groove for providing the sealing material may be machined into the pressing part 8 or the container part 1. Furthermore, when a sealing material is provided, it is provided at a position that does not obstruct contact between the first terminal part 90 and the first current collector 20.

[0039] In the ion removal apparatus 100 of this embodiment 1, when viewed from above, the container inlet 10 and the container outlet 11 are positioned facing each other radially. However, the container inlet 10 and the container outlet 11 may also be positioned differently, not facing each other radially. Furthermore, in the ion removal apparatus 100 of this embodiment 1, a structure is shown where the container inlet 10 and the container outlet 11 are located on the side of the container 1. However, they may also be located on the surface facing the cover 7, i.e., the bottom surface of the container 1 or the cover 7. When the container inlet 10 or the container outlet 11 is located on the bottom surface of the container 1 or the cover 7, holes for liquid to pass through need to be provided in the first current collector 20 and the second current collector 21. In addition, when holes for liquid to pass through are provided in the first current collector 20 and the second current collector 21, anti-outflow members can also be provided to prevent the first electrode 40 and the second electrode 41 from flowing out. Alternatively, if the container inlet 10 or container outlet 11 is provided on the bottom or cover 7 of the container section 1, and holes for liquid to pass through are provided on the first current collector 20 and the second current collector 21, the first terminal portion 90 and the second terminal portion 91 are arranged in positions different from them. In this embodiment 1, the first terminal portion 90 and the second terminal portion 91 are arranged on the bottom surface of the container section 1 and the cover 7, but they may also be arranged on the side of the container section 1, etc. In this case, in order to prevent water leakage from the first terminal portion 90 and the second terminal portion 91 to the portions through which they pass, a sealing material or the like may be appropriately provided.

[0040] Implementation Method 2

[0041] Below, refer to Figures 4-7 The ion removal apparatus 200 of Embodiment 2 will now be described. Figure 4 This is a longitudinal sectional view showing the ion removal apparatus 200 of Embodiment 2. Figure 5 This is a cross-sectional view showing the first electrode guides 30 and 31 of the ion removal apparatus 200 according to Embodiment 2. Figure 6 This is a cross-sectional view showing the second electrode guides 60 and 61 of the ion removal apparatus 200 according to Embodiment 2. Figure 7 This is a top view showing the third current collector 22 of the ion removal apparatus 200 according to Embodiment 2. Furthermore, for components identical to those described in the ion removal apparatus 100 of Embodiment 1, the same reference numerals are used, and their descriptions are omitted where appropriate.

[0042] like Figure 4As shown, the ion removal apparatus 200 of this embodiment 2 has the following structure: A single electrode layer A1 and A2 is configured, comprising a first electrode 40, a first electrode guide 3, a second electrode 41, a second electrode guide 6, and an isolation member 5. Inside the container section 1, the two electrode layers A1 and A2 are stacked. A third current collector 22 is disposed between adjacent electrode layers A1 and A2.

[0043] In other words, such as Figure 4 As shown, the ion removal apparatus 200 of this embodiment 2 has the following structure: Inside the container section 1, the first current collector 20, the first electrode guide 30, the first isolation member 50, the second electrode guide 60, the third current collector 22, the first electrode guide 31, the second isolation member 51, the second electrode guide 61, and the second current collector 21 are stacked in the following order. The portion disposed between the first current collector 20 and the third current collector 22 is the first electrode layer A1, and the portion disposed between the third current collector 22 and the second current collector 21 is the second electrode layer A2. The first electrode guide 30 and the first electrode guide 31 have the same structure. In addition, the second electrode guide 60 and the second electrode guide 61 have the same structure. These are for ease of explanation, and the reference numerals have been changed to distinguish between the lower first electrode guide 30 and the second electrode guide 60 and the upper first electrode guide 31 and the second electrode guide 61.

[0044] like Figure 4 and Figure 5As shown, the first electrode guide 30 is cylindrical. The first electrode guide 30 includes a first electrode guide inlet 30a, a first electrode holding portion 30b, a first electrode guide inlet water channel groove 30c, and a first electrode guide water channel groove 30d. The first electrode guide inlet 30a is an opening formed through the cylindrical surface to provide a flow path for liquid inflow. The first electrode holding portion 30b is a portion surrounded by the inner circumferential surface of the cylinder, where the first electrode 40 is disposed. The first electrode guide inlet water channel groove 30c is a groove formed by recessing a portion of the outer surface of the first electrode guide 30 along the axial direction of the hole. The first electrode guide inlet water channel groove 30c extends from the upper end face to the lower end face of the first electrode guide 30. Part or all of the first electrode guide inlet water channel groove 30c communicates with the first electrode guide inlet 30a, forming an inlet water channel 13 communicating with the first electrode 40. That is, the liquid flowing into the inlet water channel 30c of the first electrode guide flows into the first electrode 40 through the inlet 30a of the first electrode guide. The water channel 30d of the first electrode guide is a groove formed by recessing a portion of the outer surface of the first electrode guide 30 along the axial direction of the hole. The water channel 30d of the first electrode guide is formed from the upper end face to the lower end face of the first electrode guide 30. The water channel 30d of the first electrode guide is located at a different position than the inlet water channel 30c of the first electrode guide. The water channel 30d of the first electrode guide is connected to the outlet water channel 60c of the second electrode guide to form the outlet water channel 14a. Figure 5 As shown, the water channel 30d of the first electrode guide can be set at a position that faces the water channel 30c of the first electrode guide in the radial direction when the first electrode guide 30 is viewed from above, or it can be set at other locations.

[0045] Furthermore, the first electrode guide 31 includes a first electrode guide inlet 31a, a first electrode holding portion 31b, a first electrode guide inlet water channel groove 31c, and a first electrode guide water channel groove 31d. The constituent elements of the first electrode guide 31 are the same as the corresponding constituent elements of the first electrode guide 30, therefore, descriptions are omitted.

[0046] The first electrode guide water inlet groove 30c is disposed between the first current collector 20 and the first isolator 50. The first electrode guide water inlet groove 31c is disposed between the third current collector 22 and the second isolator 51. The first electrode guide water inlet groove 30d is disposed between the first current collector 20 and the first isolator 50. The first electrode guide water inlet groove 31d is disposed between the third current collector 22 and the second isolator 51.

[0047] like Figure 4 and Figure 6As shown, the second electrode guide 60 is cylindrical. The second electrode guide 60 includes a second electrode guide outlet 60a, a second electrode holding portion 60b, a second electrode guide water outlet channel 60c, and a second electrode guide water channel channel 60d. The second electrode guide outlet 60a is an opening formed through the cylindrical surface to serve as a flow path for liquid outflow. The second electrode holding portion 60b is a portion surrounded by the inner circumferential surface of the cylinder, where the second electrode 41 is disposed. The second electrode guide water outlet channel 60c is a groove formed by recessing a portion of the outer surface of the second electrode guide 60 along the axial direction of the hole. The second electrode guide water outlet channel 60c extends from the upper end face to the lower end face of the second electrode guide 60. Part or all of the second electrode guide water outlet channel 60c communicates with the second electrode guide outlet 60a, forming a water outlet channel 14a communicating with the second electrode 41. That is, the liquid flowing from the first isolator 50 flows into the second electrode 41 disposed in the second electrode holding part 60b and flows out from the outlet 60a of the second electrode guide. The water channel groove 60d of the second electrode guide is a groove formed by recessing a portion of the outer surface of the second electrode guide 60 along the axial direction of the hole. The water channel groove 60d of the second electrode guide is formed from the upper end face to the lower end face of the second electrode guide 60. The water channel groove 60d of the second electrode guide is located at a different position than the outlet water channel groove 60c of the second electrode guide. The water channel groove 60d of the second electrode guide is connected to the inlet water channel groove 30c of the first electrode guide to form the inlet water channel 13a. Figure 6 As shown, the water channel 60d of the second electrode guide can be positioned radially opposite to the water channel 60c of the second electrode guide when the second electrode guide 60 is viewed from above, or it can be positioned in other locations.

[0048] Furthermore, the second electrode guide 61 includes a second electrode guide outlet 61a, a second electrode holding portion 61b, a second electrode guide outlet water channel groove 61c, and a second electrode guide water channel groove 61d. The constituent elements of the second electrode guide 61 are the same as their corresponding constituent elements, therefore, descriptions are omitted.

[0049] The water outlet channel 60c of the second electrode guide is disposed between the first isolator 50 and the third current collector 22. Additionally, the water outlet channel 61c of the second electrode guide is disposed between the second isolator 51 and the second current collector 21. The water channel channel 60d of the second electrode guide is disposed between the first isolator 50 and the third current collector 22. The water channel channel 61d of the second electrode guide is disposed between the second isolator 51 and the second current collector 21.

[0050] like Figure 4As shown, the third current collector 22 is disposed between the lower second electrode guide 60 and the upper first electrode guide 31, and is in contact with the first electrode 40 and the second electrode 41. Figure 7 As shown, the third current collector 22 has an inflow water passage 22a and an outflow water passage 22b. The inflow water passage 22a is formed at a position consistent with the water passage groove 60d of the second electrode guide and the inflow water passage groove 31c of the first electrode guide, so that the inflow water passage 13a of one electrode layer A1 is connected to the inflow water passage 13b of the other electrode layer A2. The outflow water passage 22b is formed at a position consistent with the outflow water passage groove 60c of the second electrode guide and the water passage groove 31d of the first electrode guide, so that the outflow water passage 14a of one electrode layer A1 is connected to the outflow water passage 14b of the other electrode layer A2.

[0051] In the ion removal apparatus 200 of this embodiment 2, the positions of the first electrode guide inflow water channel grooves 30c and 31c are arranged to coincide with the positions of the second electrode guide water channel grooves 60d and 61d. Thus, the first electrode guide inflow water channel groove 30c, the second electrode guide water channel groove 60d, the inflow side water channel 22a, the first electrode guide inflow water channel groove 31c, and the second electrode guide water channel groove 61d are aligned, forming a liquid inflow water channel 13 inside the container section 1 that connects the inflow water channel 13a of electrode layer A1 with the inflow water channel 13b of electrode layer A2.

[0052] Furthermore, in this embodiment 2, the ion removal apparatus 200 is configured such that the positions of the first electrode guide water channel grooves 30d and 31d coincide with the positions of the second electrode guide outflow water channel grooves 60c and 61c. Thus, the first electrode guide water channel groove 30d, the second electrode guide outflow water channel groove 60c, the outflow side water channel 22b, the first electrode guide water channel groove 31d, and the second electrode guide outflow water channel groove 61c are aligned, forming a liquid outflow water channel 14 inside the container section 1 that connects the outflow water channel 14a of electrode layer A1 with the outflow water channel 14b of electrode layer A2.

[0053] The flow of liquid in the ion removal apparatus 200 of Embodiment 2 will now be described. The ion removal apparatus 200 of Embodiment 2 forms a liquid flow path through a container section 1, a first current collector 20, a first electrode guide 30, a first electrode 40, a first isolator 50, a second electrode 41, a second electrode guide 60, a third current collector 22, a first electrode guide 31, a first electrode 40, a second isolator 51, a second electrode 41, a second electrode guide 61, and a second current collector 21. Liquid flows in from the container section inlet 10 and reaches the inflow water path 13. Then, it flows into the first electrode 40 through the first electrode guide inlets 30a and 31a, respectively. Liquid flowing into the first electrode 40 through the first electrode guide inlet 30a flows into the second electrode 41 through the first isolator 50, and flows out from the second electrode guide outlet 60a through the outflow water path 14 and from the container section outlet 11 to the outside. Liquid flowing into the first electrode 40 through the inlet 31a of the first electrode guide flows into the second electrode 41 through the second isolation member 51, and flows out from the outlet 61a of the second electrode guide through the outflow water passage 14 and out of the container outlet 11 to the outside.

[0054] As described above, in the ion removal apparatus 200 of this embodiment 2, the liquid to be treated passes through the container section 1 in the following order: first electrode 40 held on the first electrode guide 30, first isolation member 50, and second electrode 41 held on the second electrode guide 60. Alternatively, the liquid to be treated passes through the container section 1 in the following order: first electrode 40 held on the first electrode guide 31, second isolation member 51, and second electrode 41 held on the second electrode guide 61. In the ion removal apparatus 200, the liquid can contact the first electrode 40 and the second electrode 41 in both the first and second layers. Therefore, when the ion removal apparatus 200 has multiple first electrodes 40 and second electrodes 41, the liquid can contact all the electrodes, improving ion removal performance.

[0055] Furthermore, the electrode layers A1 and A2 in this embodiment 2 are not limited to two layers, but can also be three or more layers. When there are n electrode layers A1 and A2, they are stacked sequentially from the bottom surface of the container portion 1 as follows: [first current collector 20], [first electrode guide 30 / first isolator 50 / second electrode guide 60 / third current collector 22], ..., (n-1) [first electrode guide 30 / first isolator 50 / second electrode guide 60][second current collector 21]. A first electrode 40 is disposed on the first electrode guide 30, and a second electrode 41 is disposed on the second electrode guide 60.

[0056] The ion removal devices 100 and 200 have been described above based on embodiments, but are not limited to the structures of the embodiments described above. The structures of the ion removal devices 100 and 200 described above are examples, and may include other constituent elements, or some constituent elements may be omitted. In short, the ion removal devices 100 and 200 include the scope of design changes and application modifications commonly made by those skilled in the art without departing from their technical concept.

[0057] Explanation of reference numerals in the attached figures

[0058] 1. Container section; 3. First electrode guide; 5. Isolator; 6. Second electrode guide; 7. Cover; 8. Pressing part; 10. Container section inlet; 11. Container section outlet; 12. First threaded part; 13, 13a, 13b. Inflow water passages; 14, 14a, 14b. Outflow water passages; 20. First current collector; 21. Second current collector; 22. Third current collector; 22a. Inflow side water passage; 22b. Outflow side water passage; 30, 31. First electrode guide; 30a, 31a. First electrode guide inlet; 30b, 31b. First electrode holding part; 30c, 31c. First electrode... Water channel for guide members, 30d and 31d water channel for first electrode guide members, 40 first electrode, 41 second electrode, 50 first isolator, 51 second isolator, 60 and 61 second electrode guide members, 60a and 61a second electrode guide member outlet, 60b and 61b second electrode holding part, 60c and 61c water channel for second electrode guide members outlet, 60d and 61d water channel for second electrode guide members, 70 second threaded part, 90 first terminal part, 91 second terminal part, 100 and 200 ion removal device, A1 and A2 electrode layers.

Claims

1. An ion removal device that desalinates a liquid, wherein, Possessing: a container portion; a first electrode that adsorbs ions in the liquid; a first electrode guide that has a first electrode holding portion that holds the first electrode and a first electrode guide inflow port that causes the liquid to flow into the first electrode holding portion; a second electrode that adsorbs ions in the liquid; a second electrode guide that has a second electrode holding portion that holds the second electrode and a second electrode guide outflow port that causes the liquid to flow out from the second electrode holding portion; and a separator that has a liquid permeable property and an electrically insulating property, and is disposed between the first electrode and the second electrode, the first electrode guide, the separator, and the second electrode guide are disposed in the interior of the container portion so that the liquid to be treated passes through in the order of the first electrode guide, the first electrode held in the first electrode holding portion, the separator, the second electrode held in the second electrode holding portion, and the second electrode guide.

2. The ion removal device according to claim 1, wherein the container portion is a bottomed cylindrical shape having an opening portion in one end surface, the ion removal device further possesses: a lid that plugs the opening portion of the container portion; and a pressing portion that presses the first electrode and the second electrode by mounting the lid to the container portion.

3. The ion removal device according to claim 2, wherein the pressing portion is a structure that is formed integrally with the lid.

4. The ion removal device according to any one of claims 1 to 3, wherein the ion removal device further possesses: a first current collector that is in contact with the first electrode; a second current collector that is in contact with the second electrode; a first terminal portion that is connected to the first current collector and supplies electric power to the first current collector; and a second terminal portion that is connected to the second current collector and supplies electric power to the second current collector.

5. The ion removal device according to any one of claims 1 to 3, wherein a first electrode guide inflow waterway groove is formed in an outer surface of the first electrode guide and is connected to the first electrode guide inflow port, a second electrode guide outflow waterway groove is formed in an outer surface of the second electrode guide and is connected to the second electrode guide outflow port, an inflow waterway for causing the liquid to flow into the first electrode is constituted by the first electrode guide inflow waterway groove and the first electrode guide inflow port, an outflow waterway for causing the liquid to flow out from the second electrode is constituted by the second electrode guide outflow waterway groove and the second electrode guide outflow port.

6. The ion removal device according to claim 5, wherein a first electrode guide waterway groove is formed in the outer surface of the first electrode guide at a position different from the first electrode guide inflow waterway groove, ​ ​ A second electrode guide water channel is formed in the outer surface of the second electrode guide at a position different from the second electrode guide outflow water channel, The first electrode guide water channel and the second electrode guide outflow water channel are connected to form the outflow water channel, The second electrode guide water channel and the first electrode guide inflow water channel are connected to form the inflow water channel.

7. The ion removal device according to claim 5, wherein The container portion has a container portion inflow port through which the liquid flows in and a container portion outflow port through which the liquid flowing in from the container portion inflow port flows out to the outside of the container portion, The container portion inflow port is provided at a position coinciding with the inflow water channel, The container portion outflow port is provided at a position coinciding with the outflow water channel.

8. The ion removal device according to any one of claims 1 to 3, wherein The container portion has a container portion inflow port through which the liquid flows in and a container portion outflow port through which the liquid flowing in from the container portion inflow port flows out to the outside of the container portion, The container portion inflow port is provided at a position coinciding with the first electrode guide inflow port, The container portion outflow port is provided at a position coinciding with the second electrode guide outflow port.

9. The ion removal device according to claim 5, wherein A structure provided with the first electrode, the first electrode guide, the second electrode, the second electrode guide, and the separator is set as one electrode layer, a plurality of the electrode layers are provided in a stacked manner in the inside of the container portion, and a third current collector is disposed between adjacent electrode layers, The third current collector has an inflow side water channel that communicates the inflow water channel of one of the electrode layers with the inflow water channel of another of the electrode layers and an outflow side water channel that communicates the outflow water channel of one of the electrode layers with the outflow water channel of another of the electrode layers.

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