Ion exchanger

Abstract

To provide an ion exchanger capable of suppressing air stagnation.SOLUTION: An ion exchanger 10 includes an ion exchange resin 11, a housing part 12 for containing the ion exchange resin 11, an inlet pipe 13 communicating with an inlet chamber 12a formed above the ion exchange resin 11 within the housing part 12, and an outlet pipe 14 communicating with an outlet chamber 12b formed below the ion exchange resin 11 within the housing part 12. Cooling water flowing into the housing part 12 from the inlet pipe 13 passes through the ion exchange resin 11 and flows out through the outlet pipe 14. The ion exchanger 10 includes a pipe 46 that extends vertically through the ion exchange resin 11 within the housing part 12 and through which the cooling water flows. The upper end of the pipe 46 opens facing the highest part of the inner surface of the inlet chamber 12a. The lower end of the pipe 46 communicates with the outlet pipe 14.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an ion exchanger. [Background technology]

[0002] Conventionally, fuel cells have been designed to suppress temperature rise during power generation by using cooling water circulating inside the fuel cell. When ions are eluted into the cooling water as the fuel cell generates power, the conductivity of the cooling water increases. This can result in a decrease in the performance of the fuel cell due to electrical leakage through the cooling water. For this reason, fuel cells are connected to ion exchangers that remove ions from the cooling water by passing the cooling water through ion exchange resin.

[0003] The ion exchanger described in Patent Document 1 includes an ion exchange chamber, an upper rectification chamber, and a lower rectification chamber. The ion exchange chamber is filled with ion exchange resin. The upper rectification chamber is formed continuously with the upper side of the ion exchange chamber. The lower rectification chamber is formed continuously with the lower side of the ion exchange chamber. The top wall of the upper rectification chamber is inclined with respect to the horizontal plane. An upstream connection hole is provided at the top of the top wall. The bottom wall of the lower rectification chamber is inclined with respect to the horizontal plane. A downstream connection hole is provided at the bottom of the bottom wall. The upstream connection hole and the downstream connection hole are connected to a refrigerant flow path through which cooling water circulates.

[0004] The cooling water flows into the upper flow straightening chamber through the upstream connecting hole and flows downward through the ion exchange chamber. As the cooling water passes through the ion exchange resin, ions are removed from the cooling water. The cooling water then flows out of the ion exchanger through the downstream connecting hole.

[0005] However, cooling water may contain air. If air is present in the cooling water, it may prevent contact between the cooling water and the ion exchange resin, or the flow rate of the cooling water may decrease due to the air remaining in the ion exchanger. As a result, the ion exchange efficiency of the ion exchanger may decrease.

[0006] In the ion exchanger described in Patent Document 1, an upstream connecting hole is provided at the top of a top wall that is inclined relative to the horizontal plane, so that air contained in the cooling water moves upward along the inclination of the top wall and is discharged to the outside of the ion exchanger through the upstream connecting hole. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-27684 Summary of the Invention [Problem to be solved by the invention]

[0008] In the ion exchanger described in Patent Document 1, air discharged from the ion exchanger moves to the refrigerant flow path upstream of the ion exchanger. If air is present in the refrigerant flow path, the flow rate of the cooling water flowing through the refrigerant flow path may decrease, or the air in the refrigerant flow path may flow back into the ion exchanger. Therefore, there is room for improvement in discharging air from the ion exchanger. [Means for solving the problem]

[0009] An ion exchanger for solving the above problem comprises an ion exchange resin, a storage section for storing the ion exchange resin, an inlet pipe connected to an inlet chamber which is a space formed above the ion exchange resin within the storage section, and an outlet pipe connected to an outlet chamber which is a space formed below the ion exchange resin within the storage section, wherein cooling water flowing into the storage section from the inlet pipe passes through the ion exchange resin and flows out from the outlet pipe, and the ion exchanger comprises a pipe through which cooling water flows that penetrates the ion exchange resin in the vertical direction within the storage section, the upper end of the pipe opens facing the highest part of the inner surface of the inlet chamber, and the lower end of the pipe is connected to the outlet pipe.

[0010] According to the above configuration, a portion of the cooling water that flows from the inlet pipe into the inlet chamber passes through the ion exchange resin. The remaining cooling water flows into the pipe from the upper end of the pipe. Because the upper end of the pipe opens facing the highest part of the inner surface of the inlet chamber, air stagnating at the top of the inlet chamber can easily flow through the pipe together with the cooling water. Furthermore, because the lower end of the pipe is connected to the outlet pipe, the air in the pipe flows out of the accommodating unit from the outlet pipe together with the cooling water. This prevents air from stagnating within the ion exchanger. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a cross-sectional view of an ion exchanger according to one embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, one embodiment of the ion exchanger will be described with reference to FIGS. (Overall configuration of ion exchanger 10) 1, the ion exchanger 10 is connected to a cooling circuit C through which cooling water for cooling a fuel cell flows, for example. The ion exchanger 10 removes ions contained in the cooling water.

[0013] The ion exchanger 10 includes an ion exchange resin 11, a storage section 12, an inlet pipe 13, and an outlet pipe 14. The storage section 12 stores the ion exchange resin 11. An inlet chamber 12a and an outlet chamber 12b are formed within the storage section 12. The inlet chamber 12a is a space formed above the ion exchange resin 11 within the storage section 12. The outlet chamber 12b is a space formed below the ion exchange resin 11 within the storage section 12. The inlet pipe 13 is connected to the inlet chamber 12a. The inlet pipe 13 allows cooling water to flow into the inlet chamber 12a. The outlet pipe 14 is connected to the outlet chamber 12b. The outlet pipe 14 allows cooling water to flow out of the outlet chamber 12b. The inlet pipe 13 and the outlet pipe 14 are connected to a cooling circuit C.

[0014] The ion exchanger 10 includes a case 20 and a cartridge 30. The case 20 is open at the top. The case 20 houses the cartridge 30. The cartridge 30 is cylindrical. The cartridge 30 is filled with an ion exchange resin 11. The cartridge 30 is configured to be detachable from the case 20.

[0015] (Configuration of Case 20) The case 20 has a case-side storage section 21 and the outflow pipe 14. The case-side storage section 21 is cylindrical and opens upward and is closed at the bottom. The outflow pipe 14 extends horizontally from the bottom of the case-side storage section 21.

[0016] The case-side storage section 21 has a bottom wall 22 and a case peripheral wall 23. The bottom wall 22 has a circular shape in a plan view. The case peripheral wall 23 protrudes upward from the outer periphery of the bottom wall 22.

[0017] The lower end of the case peripheral wall 23 is a reduced diameter portion 24 that is smaller in diameter than the other portion of the case peripheral wall 23. The reduced diameter portion 24 forms the outflow chamber 12b. An internal thread 23a is formed on the inner peripheral surface of the upper end of the case peripheral wall 23.

[0018] The outflow pipe 14 is formed integrally with the bottom wall 22. The outflow pipe 14 passes through the center of the bottom wall 22 and extends linearly in the radial direction of the bottom wall 22. The cross section of the outflow pipe 14 perpendicular to the longitudinal direction is circular. The internal space of the outflow pipe 14 and the outflow chamber 12b are separated only by the bottom wall 22.

[0019] The outflow pipe 14 has an exposed portion 25 that is exposed inside the outflow chamber 12b. The exposed portion 25 extends radially across the entire bottom wall 22. The exposed portion 25 has a peripheral wall 26 that forms part of the bottom wall 22. The peripheral wall 26 of the exposed portion 25 protrudes upward relative to other portions of the bottom wall 22. The portion of the outflow pipe 14 that is different from the exposed portion 25 protrudes toward the outer periphery of the storage section 12.

[0020] The exposed portion 25 has a first communication hole 25a and a second communication hole 25b. The first communication hole 25a communicates with the outflow chamber 12b. The second communication hole 25b communicates with the lower end of a pipe 46, which will be described later. The first communication hole 25a is located upstream of the second communication hole 25b in the flow direction of the cooling water flowing through the outflow pipe 14.

[0021] The first communication hole 25a extends from a portion of the peripheral wall 26 that is upstream of the center of the bottom wall 22 in the flow direction to the upstream end of the exposed portion 25. The second communication hole 25b penetrates the peripheral wall 26. The second communication hole 25b is circular. The central axis of the second communication hole 25b coincides with the central axis of the bottom wall 22. The flow path cross-sectional area of ​​the second communication hole 25b is smaller than the flow path cross-sectional area of ​​the exposed portion 25.

[0022] The outflow pipe 14 has an annular wall 27 that protrudes upward from the peripheral wall 26 of the exposed portion 25. The lower end of the annular wall 27 is connected to the bottom wall 22. The annular wall 27 surrounds the second communication hole 25b.

[0023] The annular wall 27 has a reduced diameter portion 28 whose inner diameter is smaller than that of the other portion of the annular wall 27. The reduced diameter portion 28 constitutes the portion of the annular wall 27 below the upper end portion. (Configuration of cartridge 30) The cartridge 30 has a cartridge-side accommodating section 31 and the inflow pipe 13. The cartridge-side accommodating section 31 accommodates the ion exchange resin 11. When the cartridge 30 is attached to the case 20, the cartridge-side accommodating section 31 is accommodated in the case-side accommodating section 21. The accommodating section 12 is composed of the case-side accommodating section 21 and the cartridge-side accommodating section 31. The inflow pipe 13 extends horizontally from the top of the cartridge-side accommodating section 31.

[0024] The cartridge 30 includes a cap 32, a retaining cylinder 35, a lid member 40, a support cylinder 45, and a pipe 46. The cap 32 has an inlet pipe 13. The retaining cylinder 35 extends downward from the cap 32 and holds the ion exchange resin 11. The lid member 40 covers the opening at the upper end of the retaining cylinder 35. The support cylinder 45 extends vertically in the center of the retaining cylinder 35. The pipe 46 is inserted into the support cylinder 45. The portion of the cap 32 excluding the inlet pipe 13 and the retaining cylinder 35 constitute the cartridge-side storage section 31.

[0025] The ion exchange resin 11 is filled in the space within the cartridge 30 between the retaining cylinder 35 , the cover member 40 and the support cylinder 45 . The cap 32 has a top wall 33 and a cap peripheral wall 34. The top wall 33 is circular in plan view. The cap peripheral wall 34 protrudes downward from the outer periphery of the top wall 33. The top wall 33 and the cap peripheral wall 34 form the inflow chamber 12a. The cap peripheral wall 34 is an example of a "peripheral wall."

[0026] The inner surface of the top wall 33 is curved in a dome shape so that the portions closer to the center of the top wall 33 are positioned higher. Therefore, the highest portion of the inner surface of the top wall 33 is the center of the top wall 33. A male thread 34a that meshes with the female thread 23a of the case peripheral wall 23 is formed on the outer peripheral surface of the lower end of the cap peripheral wall 34. The cartridge 30 is detachably attached to the case 20 by screwing the male thread 34a into the female thread 23a.

[0027] The inlet pipe 13 opens into the cap peripheral wall 34. The inlet pipe 13 is formed integrally with the cap peripheral wall 34. The inlet pipe 13 extends linearly at a position offset from the center of the top wall 33 in the horizontal direction. The inlet pipe 13 extends parallel to the outlet pipe 14. The inlet pipe 13 faces the same direction as the outlet pipe 14. The cross section of the outlet pipe 14 perpendicular to the longitudinal direction is circular.

[0028] The retaining cylinder 35 has a cylindrical shape that extends in the vertical direction. The diameter of the retaining cylinder 35 is larger than the diameter of the reduced diameter portion 24 of the case peripheral wall 23. The space within the interior space of the case 20 that is partitioned by the reduced diameter portion 24 and the retaining cylinder 35 is the outflow chamber 12b.

[0029] The outer peripheral surface of the upper end of the retaining cylinder 35 is joined to the inner peripheral surface of the lower end of the cap peripheral wall 34 . The retaining tube 35 has a first outer annular portion 36, a first inner annular portion 37, and a plurality of first connecting portions 38. The first outer annular portion 36 protrudes from the lower edge of the retaining tube 35 along the entire circumference toward the inner periphery of the retaining tube 35. The first inner annular portion 37 surrounds the pipe 46 on the inner periphery of the first outer annular portion 36. The plurality of first connecting portions 38 connect the first outer annular portion 36 and the first inner annular portion 37 at multiple locations spaced apart in the circumferential direction of the retaining tube 35.

[0030] A disk-shaped first mesh member 39 is provided on the lower surface of the retaining cylinder 35. The first mesh member 39 is formed of a thin metal plate such as stainless steel. The first mesh member 39 has a plurality of through holes that penetrate the first mesh member 39 in the thickness direction. Each through hole is set to a size that allows the passage of cooling water but prevents the passage of ion exchange resin 11.

[0031] The cover member 40 has a second outer annular portion 41, a second inner annular portion 42, and a plurality of second connecting portions 43. The second outer annular portion 41 is joined around the entire circumference to the upper end surface of the retaining tube 35. The second outer annular portion 41 protrudes further toward the inner circumference of the retaining tube 35 than the upper end of the retaining tube 35. The second inner annular portion 42 surrounds the pipe 46 on the inner circumference side of the second outer annular portion 41. The plurality of second connecting portions 43 connect the second outer annular portion 41 and the second inner annular portion 42 at multiple locations spaced apart in the circumferential direction of the retaining tube 35.

[0032] The space within the internal space of the cartridge 30 that is partitioned by the cap 32 and the lid member 40 is the inflow chamber 12a. A disk-shaped second mesh member 44 is provided on the underside of the lid member 40. The second mesh member 44 has the same configuration as the first mesh member 39.

[0033] The support tube 45 is cylindrical. The lower end surface of the support tube 45 contacts the upper surface of the first inner annular portion 37. The upper end surface of the support tube 45 contacts the lower surface of the second inner annular portion . The pipe 46 extends in the vertical direction at the center of the cartridge 30. The pipe 46 is cylindrical. The pipe 46 is inserted into the support tube 45 and is supported by the support tube 45. The support tube 45 and the pipe 46 penetrate the ion exchange resin 11. The diameter of the pipe 46 is approximately the same as the inner diameter of the support tube 45. Both ends of the pipe 46 protrude from both sides of the retaining tube 35 in the axial direction.

[0034] 2, the upper end of pipe 46 opens via a gap between it and top wall 33 at a position higher than the opening of inflow pipe 13 in inflow chamber 12a. The upper end of pipe 46 opens at the center of the inner surface of inflow chamber 12a, i.e., facing the highest part of the inner surface of top wall 33. In other words, the inner surface of top wall 33 is recessed so that the closer it is to the upper end of pipe 46 in the horizontal direction, the higher it is positioned.

[0035] The lower end of the pipe 46 is connected to the outflow pipe 14 by being located inside the annular wall 27. That is, the lower end of the pipe 46 directly communicates with the outflow pipe 14. The lower end surface of the pipe 46 contacts the upper surface of the reduced diameter portion 28. The opening of the lower end of the pipe 46 faces the second communication hole 25b in the vertical direction. The central axis of the pipe 46 and the central axis of the second communication hole 25b are aligned. The lower end of the pipe 46 communicates with the outflow pipe 14 only via the second communication hole 25b.

[0036] The central axis of the pipe 46 coincides with the central axis of the retaining cylinder 35. Therefore, the cartridge 30 is rotated about the central axis of the pipe 46 and screwed into the case 20, thereby being detachably attached to the case 20. By screwing the cartridge 30 into the case 20, the lower end of the pipe 46 is inserted inside the annular wall 27.

[0037] Cooling water flows inside the pipe 46. The flow path cross-sectional area of ​​the pipe 46 is smaller than the cross-sectional area of ​​the inflow chamber 12a perpendicular to the up-down direction. The flow path cross-sectional area of ​​the pipe 46 is also smaller than the cross-sectional area of ​​the region of the storage section 12 filled with the ion exchange resin 11 perpendicular to the up-down direction. Therefore, the flow velocity of the cooling water flowing inside the pipe 46 is greater than the flow velocity of the cooling water passing through the ion exchange resin 11.

[0038] The cooling water that has flowed into the inlet chamber 12a passes through either the ion exchange resin 11 or the pipe 46. Therefore, by adjusting the flow path cross-sectional area of ​​the pipe 46, the flow rate of the cooling water passing through the ion exchange resin 11, i.e., the proportion of the cooling water that is ion-exchanged by the ion exchange resin 11, can be adjusted. The flow path cross-sectional area of ​​the pipe 46 is set to a flow path cross-sectional area determined in advance by experiment or simulation so as to satisfy a predetermined ion exchange efficiency.

[0039] <Operation of this embodiment> 1, a portion of the cooling water that flows into the inflow chamber 12a from the inflow pipe 13 passes through the ion exchange resin 11. The remaining cooling water flows into the pipe 46 from the upper end thereof.

[0040] When the cooling water passes through the ion exchange resin 11, ions are removed from the cooling water by ion exchange by the ion exchange resin 11. The cooling water that has passed through the ion exchange resin 11 flows into the outflow pipe 14 through the first communication hole 25a that opens into the outflow chamber 12b. The cooling water then flows out of the outflow pipe 14 into the cooling circuit C.

[0041] Here, when air A is contained in the cooling water, the air A tends to accumulate in the upper part of the inflow chamber 12a. Because the upper end of the pipe 46 opens facing the highest part of the inner surface of the inflow chamber 12a, the air A that has accumulated in the upper part of the inflow chamber 12a tends to flow through the pipe 46 together with the cooling water. Furthermore, because the lower end of the pipe 46 is connected to the outlet pipe 14, the air A in the pipe 46 flows out from the outlet pipe 14 to the cooling circuit C together with the cooling water.

[0042] <Effects of this embodiment> (1) The ion exchanger 10 includes a pipe 46 that vertically penetrates the ion exchange resin 11. The upper end of the pipe 46 opens to face the highest part of the inner surface of the inlet chamber 12a. The lower end of the pipe 46 communicates with the outlet pipe 14.

[0043] According to the above configuration, the air A that has flowed into the pipe 46 flows out of the container 12 together with the cooling water, so that the air A can be prevented from accumulating inside the ion exchanger 10. (2) The inlet pipe 13 and the outlet pipe 14 extend horizontally from the storage section 12 .

[0044] According to the above configuration, it is possible to prevent the size of the ion exchanger 10 from increasing in the vertical direction. (3) The inflow chamber 12a is formed by the top wall 33 and the cap peripheral wall 34 where the inflow pipe 13 opens. The upper end of the pipe 46 opens via a gap between the top wall 33 and the inflow chamber 12a at a position above the opening of the inflow pipe 13.

[0045] According to the above configuration, since the inflow pipe 13 opens to the cap peripheral wall 34, the air A that flows into the inflow chamber 12a tends to accumulate directly below the top wall 33. Here, the upper end of the pipe 46 opens via a gap between it and the top wall 33 at a position above the opening of the inflow pipe 13. Therefore, the air A that has accumulated directly below the top wall 33 tends to flow into the pipe 46. In addition, the air A that has accumulated directly below the top wall 33 can be prevented from flowing back into the inflow pipe 13. Therefore, a decrease in the ion exchange efficiency of the ion exchanger 10 can be prevented.

[0046] (4) The inner surface of the top wall 33 is recessed so that the closer it is to the upper end of the pipe 46 in the horizontal direction, the higher it is positioned. According to the above configuration, air A that flows into inflow chamber 12a tends to remain in the portion of the inner surface of top wall 33 that faces the upper end of pipe 46. This makes it even easier for air A that remains directly below top wall 33 to flow into pipe 46. In addition, air A that remains directly below top wall 33 is further prevented from flowing back into inflow pipe 13. This further prevents a decrease in the ion exchange efficiency of ion exchanger 10.

[0047] (5) The cartridge 30 is detachably attached to the case 20 by rotating it around the central axis of the pipe 46 . According to the above configuration, when the cartridge 30 is attached to or detached from the case 20, the cartridge 30 is rotated about the central axis of the pipe 46. As a result, when the cartridge 30 is attached to the case 20, the pipe 46 does not move horizontally relative to the case 20. Therefore, it is not necessary to position the pipe 46 relative to the case 20 in the horizontal direction. Therefore, it is easy to position the pipe 46 relative to the case 20.

[0048] (6) The exposed portion 25 has a first communication hole 25a that communicates with the outflow chamber 12b and a second communication hole 25b that communicates with the lower end of the pipe 46. The first communication hole 25a is located upstream of the second communication hole 25b in the flow direction of the cooling water flowing through the outflow pipe 14.

[0049] According to the above configuration, the cooling water flowing in from the outflow chamber 12b through the first communication hole 25a and the cooling water flowing in from inside the pipe 46 through the second communication hole 25b flow through the outflow pipe 14. Because the first communication hole 25a is located upstream of the second communication hole 25b, the flow of the cooling water that has passed through the first communication hole 25a makes it easier for the air A in the pipe 46 to be drawn into the exposed portion 25 together with the cooling water. This further reduces the accumulation of air A inside the ion exchanger 10.

[0050] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0051] The exposed portion 25 may have a plurality of first communication holes 25 a. In this case, it is preferable that at least one of the first communication holes 25 a is located upstream of the second communication hole 25 b in the flow direction of the cooling water flowing through the outflow pipe 14.

[0052] The first communication hole 25a may be located downstream of the second communication hole 25b in the flow direction of the cooling water flowing through the outflow pipe 14. The outflow pipe 14 does not have to have the exposed portion 25. The outflow pipe 14 may be located below the bottom wall 22 of the case-side storage portion 21 and may be in communication with the case-side storage portion 21.

[0053] The highest part of the inner surface of the top wall 33 may be a part different from the center of the top wall 33. In this case, the pipe 46 facing the highest part of the inner surface of the top wall 33 is positioned at a position horizontally offset from the center of the cartridge 30. The cartridge 30 may also include a plurality of pipes 46 arranged in parallel. In these cases, the cartridge 30 may be configured to engage with and disengage from the case 20 by being moved up and down. The cartridge 30 may also be attached to the case 20 by a clamp member or a bolt.

[0054] The ion exchanger 10 does not have to include the cartridge 30. That is, the ion exchanger 10 does not have to have the ion exchange resin 11 that is replaceable. The inner surface of the top wall 33 does not have to be curved in a dome shape. The inner surface of the top wall 33 may be composed of a plurality of inclined surfaces that are inclined so that the portions closer to the center of the top wall 33 are positioned higher.

[0055] The inner surface of the top wall 33 may be a flat surface extending horizontally. In this case, the entire inner surface of the top wall 33 is the highest part of the inner surface. The upper end of the pipe 46 may open at the same position as or below the opening of the inlet pipe 13 in the inlet chamber 12a in the vertical direction.

[0056] The upper end of the pipe 46 may be in contact with the inner surface of the top wall 33. In this case, the pipe 46 preferably has a through-hole that penetrates the peripheral wall of the pipe 46 in the radial direction. The inlet pipe 13 may open into the top wall 33 .

[0057] The inlet pipe 13 may extend upward from the container 12 . The outlet pipe 14 may extend downward from the container 12 . The ion exchanger 10 is not limited to being connected to the cooling circuit C of a fuel cell, but can be applied to various devices that require ion exchange of cooling water.

[0058] <Additional Notes> The above embodiment includes the configurations described in the following supplementary notes. [Appendix 1] An ion exchanger comprising an ion exchange resin, a storage section for storing the ion exchange resin, an inlet pipe communicating with an inlet chamber which is a space formed above the ion exchange resin in the storage section, and an outlet pipe communicating with an outlet chamber which is a space formed below the ion exchange resin in the storage section, wherein cooling water flowing into the storage section from the inlet pipe passes through the ion exchange resin and flows out from the outlet pipe, and the ion exchanger further comprises a pipe through which cooling water flows that penetrates the ion exchange resin in the vertical direction within the storage section, the upper end of the pipe opening opposite the highest part of the inner surface of the inlet chamber, and the lower end of the pipe communicating with the outlet pipe.

[0059] [Appendix 2] The ion exchanger according to [Appendix 1], wherein the inlet pipe and the outlet pipe extend horizontally from the storage section. [Appendix 3] An ion exchanger according to [Appendix 1] or [Appendix 2], wherein the inlet chamber is formed by a top wall and a peripheral wall that protrudes downward from the outer periphery of the top wall and into which the inlet pipe opens, and the upper end of the pipe opens via a gap between it and the top wall at a position in the inlet chamber above the opening of the inlet pipe.

[0060] [Appendix 4] The ion exchanger according to [Appendix 3], wherein the inner surface of the top wall is recessed so that the closer it is to the upper end of the pipe in the horizontal direction, the higher it is positioned. [Appendix 5] An ion exchanger described in any one of [Appendix 1] to [Appendix 4], comprising: a cylindrical cartridge that houses the ion exchange resin and the pipe; and a case that houses the cartridge and, together with the cartridge, forms the storage section, wherein the pipe extends in the vertical direction at the center of the cartridge, and the cartridge is detachably attached to the case by rotating around the central axis of the pipe.

[0061] [Appendix 6] An ion exchanger described in any one of [Appendix 1] to [Appendix 5], wherein the outlet pipe has an exposed portion that extends horizontally and is exposed in the outlet chamber, the exposed portion has a first communication hole that communicates with the outlet chamber and a second communication hole that communicates with a lower end of the pipe, and the first communication hole is located upstream of the second communication hole in the flow direction of the cooling water flowing through the outlet pipe. [Explanation of symbols]

[0062] A...Air C…Cooling circuit 10...Ion exchanger 11...Ion exchange resin 12...Storage section 12a...Inflow chamber 12b…Outflow chamber 13...Inflow pipe 14...Outflow pipe 20…case 21...Case side storage section 22...Bottom wall 23...Case peripheral wall 23a...female thread 24...Reduced diameter part 25...Exposed part 25a...1st communication hole 25b…Second communication hole 26...Peripheral wall 27...Circular wall 28...Reduced diameter part 30...Cartridge 31...Cartridge side storage section 32...Cap 33...Top wall 34...Cap peripheral wall 34a...male thread 35...Holding cylinder 36...First outer ring part 37...First inner ring 38...1st connection part 39...First mesh member 40...Cover member 41…Second outer ring part 42...Second inner ring 43…Second connection part 44...Second mesh member 45...Support tube 46...Pipe

Claims

1. an ion exchanger comprising: an ion exchange resin; a storage section for storing the ion exchange resin; an inlet pipe communicating with an inlet chamber, which is a space formed in the storage section above the ion exchange resin; and an outlet pipe communicating with an outlet chamber, which is a space formed in the storage section below the ion exchange resin, wherein cooling water flowing into the storage section from the inlet pipe passes through the ion exchange resin and flows out from the outlet pipe, a pipe through which cooling water flows, the pipe vertically penetrating the ion exchange resin in the storage section; The upper end of the pipe opens to face the highest part of the inner surface of the inlet chamber, The lower end of the pipe is in communication with the outflow pipe. Ion exchanger.

2. The inlet pipe and the outlet pipe extend horizontally from the storage section.

2. The ion exchanger of claim 1.

3. The inflow chamber is formed by a top wall and a peripheral wall that protrudes downward from an outer periphery of the top wall and into which the inflow pipe opens, an upper end of the pipe opens through a gap between the upper end of the pipe and the top wall at a position above the opening of the inlet pipe in the inlet chamber; 2. The ion exchanger of claim 1.

4. The inner surface of the top wall is recessed so as to be positioned higher in the horizontal direction as it approaches the upper end of the pipe.

4. The ion exchanger according to claim 3.

5. a cylindrical cartridge that accommodates the ion exchange resin and the pipe; a case that houses the cartridge and constitutes the housing portion together with the cartridge, the pipe extends in a vertical direction at the center of the cartridge, The cartridge is detachably attached to the case by rotating it around the central axis of the pipe.

2. The ion exchanger of claim 1.

6. the outflow pipe extends horizontally and has an exposed portion exposed in the outflow chamber, the exposed portion has a first communication hole communicating with the outflow chamber and a second communication hole communicating with a lower end of the pipe, the first communication hole is located upstream of the second communication hole in the flow direction of the cooling water flowing through the outflow pipe; The ion exchanger according to any one of claims 1 to 5.

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