JP2017176935A - Ion exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ion exchanger which improves mountability to a vehicle and more reliably emits gas from the ion exchanger.SOLUTION: An ion exchanger 100 is provided with a case 101 having a cylindrical body which is formed on a refrigerant piping 200, and a cartridge 102. A lower base 101B of the case 101 has an inflow hole 101F, which is communicated with the refrigerant piping 200, at a position between a peripheral edge and a center of the lower base 101B and an outflow hole 101E, which is communicated with the refrigerant piping 200, at the center of the lower base 101B. The cartridge 102 is provided with a casing 102A having a tubular body with an upper base, which is to be loaded on the case 101, a pipe portion 102B arranged at the center of the casing 102A along a vertical direction, and an ion exchange resin 102C filled between the casing 102A and the pipe portion 102B. A lower end of the pipe portion 102B is connected to the outflow hole 101E and an upper end of the pipe portion 102B is open to let a refrigerant through.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an ion exchanger, and relates to an ion exchanger provided in a refrigerant pipe of a fuel cell.

  Patent Document 1 describes an ion exchanger including an ion exchange resin cartridge, a case in which the ion exchange resin cartridge is accommodated, and a lid of the case. In each of the lower part and the upper part of the case, an inlet / outlet port to which a pipe through which a refrigerant supplied to the fuel cell passes is connected. Then, the refrigerant flows into the case through the inlet / outlet port at the upper part of the case, passes through the ion exchange resin from the upper side to the lower side, and flows out of the case through the inlet / outlet port at the lower part of the case.

JP2013-233499A

  The present inventor newly improves the mountability of the ion exchanger in a vehicle by omitting the entrance / exit port provided in the upper part of the ion exchanger by mounting the ion exchanger on the refrigerant pipe. Devised. However, if the inlet / outlet port provided in the upper part of the ion exchanger is omitted, it becomes difficult to discharge the gas accumulated in the upper part of the ion exchanger out of the ion exchanger, and the upper part of the ion exchange resin is exposed from the refrigerant. There is a possibility.

  The present invention has been made to solve such a problem, and provides an ion exchanger that can improve the mountability in a vehicle and can more reliably discharge the gas in the ion exchanger. It is for the purpose.

  The ion exchanger according to the present invention is an ion exchanger provided on a refrigerant pipe of a fuel cell. The ion exchanger includes an attachment portion that is a cylindrical body with a bottom and is formed to protrude vertically upward from the refrigerant pipe, and a cartridge that is detachably attached to the attachment portion. In addition, the lower bottom of the mounting portion communicates with the refrigerant pipe between the peripheral edge of the lower bottom and the center, and the refrigerant pipe at the central portion of the lower bottom. And an outflow hole. The cartridge includes a casing that is a cylindrical body with an upper bottom that is detachably attached to the mounting portion, a pipe portion that is disposed along a vertical direction at the center of the casing, and the casing. And an ion exchange resin filled between the pipe portions. Moreover, the lower end of the pipe part is fitted in the outflow hole, and the upper end of the pipe part is opened so that the refrigerant can pass therethrough. Then, the refrigerant flows into the housing from the refrigerant pipe through the inflow hole, passes through the ion exchange resin, passes through the pipe portion from the upper end toward the lower end, and passes through the outflow hole. Out of the housing into the refrigerant pipe.

  According to the ion exchanger according to the present invention, the ion exchanger is provided on the refrigerant pipe of the fuel cell, and the inlet / outlet port provided at the upper part of the conventional ion exchanger can be omitted. Thereby, the mounting property to the vehicle of an ion exchanger can be improved. In addition, the refrigerant flows into the ion exchanger through an inflow hole provided in the lower bottom of the ion exchanger mounting portion, passes through the ion exchange resin, and then passes through the pipe portion from the upper end toward the lower end. It flows out through the outflow hole provided in the lower bottom. Therefore, when the refrigerant passes through the ion exchange resin and flows into the pipe part from the upper end of the pipe part, the gas accumulated in the upper part of the ion exchange resin and the ion exchanger also flows into the pipe part together with the refrigerant. And discharged to the outside of the ion exchanger. Therefore, the gas in the ion exchanger can be discharged more reliably. Therefore, the ion exchanger which can improve the mounting property to a vehicle and can discharge | emit the gas in an ion exchanger more reliably can be provided.

It is a figure which shows the side surface of the ion exchanger concerning Embodiment 1 of this invention. It is a figure which shows the side surface of the ion exchanger concerning Embodiment 1 of this invention. It is a figure which shows the upper surface of the ion exchanger concerning Embodiment 1 of this invention. It is a figure which shows the IV-IV arrow cross section of FIG.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the ion exchanger 100 according to the first embodiment when viewed from a direction substantially orthogonal to the pipe portion 101A connected to the refrigerant pipe 200. FIG. 2 is a view showing a side surface of the ion exchanger 100 viewed from a direction substantially parallel to the pipe portion 101A. FIG. 3 is a view showing the upper surface of the ion exchanger 100. FIG. 4 is a view showing a cross section taken along the IV-IV arrow of the ion exchanger 100. In FIG. 4, hatching indicating a cross section is omitted for members other than the ion-exchange resin 102 </ b> C in order to make the drawing easy to see.

  The ion exchanger 100 according to the first embodiment is provided on a refrigerant pipe 200 through which cooling water (refrigerant) supplied to a fuel cell (not shown) passes, for example, as shown in FIG. 1 or FIG. . Specifically, the ion exchanger 100 includes a case 101 as an attachment portion that is formed to protrude substantially vertically upward from the refrigerant pipe 200, and a cartridge 102 that is detachably attached to the case 101. . The shape of the case 101 is a cylindrical body with a lower bottom 101B as shown in FIGS. The shape of the case 101 is not limited to the cylindrical shape shown in FIGS. 3 and 4 and may be a rectangular tube shape or the like.

  Specifically, as shown in FIG. 4, the case 101 includes a pipe portion 101A, a lower bottom 101B, a cylindrical portion 101C, a throttle portion 101D, and the like.

  The pipe portion 101 </ b> A is a tubular member that can be connected to the refrigerant pipe 200. The case 101 may be formed integrally with the refrigerant pipe 200, and the pipe portion 101A may be the refrigerant pipe 200 itself. In addition, a throttle portion 101D described later is provided on the inner surface of the pipe portion 101A. The inner diameter of the pipe portion 101A is a constant width from the upstream side to the throttle portion 101D, and after being gradually reduced from the upstream toward the downstream by the throttle portion 101D, the downstream end of the throttle portion 101D. Gradually increases toward the downstream side of the pipe portion 101A.

  The lower bottom 101B is substantially circular in plan view, and is provided on the upper portion of the pipe portion 101A. Further, a cylindrical portion 101C is formed so as to protrude substantially vertically upward from the periphery of the lower bottom 101B.

  A screw thread that can be screwed with a screw thread formed on the outer surface of the housing 102A of the cartridge 102 is formed on the inner surface of the upper portion of the cylindrical portion 101C. Further, a stepped portion on which the O-ring 103 mounted on the outer side of the housing 102A of the cartridge 102 can be abutted is formed above the thread on the inner surface of the cylindrical portion 101C.

  The diaphragm 101D is a cylindrical member provided on the inner surface of the pipe portion 101A. The inner diameter of the throttle portion 101D is gradually narrowed from the upstream side to the downstream side of the pipe portion 101A. In addition, the throttle portion 101D is provided on the upstream side of an outflow hole 101E described later and on the downstream side of an inflow hole 101F described later of the pipe portion 101A. The throttle portion 101D narrows the flow path of the cooling water flowing through the pipe portion 101A. Therefore, on the upstream side of the throttle portion 101 </ b> D, the cooling water that has flowed in from the upstream of the pipe portion 101 </ b> A travels downstream without flowing into the ion exchanger 100 and the cooling water that flows into the ion exchanger 100. Divided into cooling water.

  In addition, a cylindrical outflow hole 101E that protrudes substantially vertically upward from the central portion is provided in the central portion of the lower bottom 101B. The outflow hole 101E communicates with the pipe portion 101A. In other words, the outflow hole 101E communicates with the refrigerant pipe 200 via the pipe portion 101A. Further, the outflow hole 101E has an inner diameter capable of fitting a lower end of a pipe portion 102B (described later) of the cartridge 102. Then, the cooling water flows out from the case 101 to the pipe portion 101A through the outflow hole 101E.

  An inflow hole 101F is provided between the periphery and the center of the lower bottom 101B. In other words, the inflow hole 101F is formed between the peripheral edge of the lower bottom 101B and the outflow hole 101E. Specifically, an inflow hole 101F is formed between the peripheral edge of the lower bottom 101B and the outflow hole 101E and at an upstream position. Further, the inflow hole 101F communicates with the pipe portion 101A. In other words, the inflow hole 101F communicates with the refrigerant pipe 200 via the pipe portion 101A. Then, the cooling water flows from the pipe portion 101A into the case 101 through the inflow hole 101F. The number and size of the inflow terms 101F are not limited to those in FIG.

  As shown in FIG. 4, the cartridge 102 includes a housing 102A, a pipe portion 102B, an ion exchange resin 102C, a lower base 102D, and the like.

  The shape of the housing 102A is a cylindrical body with an upper bottom. The housing 102A is detachably mounted in the cylindrical portion 101C of the case 101. Specifically, a thread that can be screwed with a thread formed on the inner surface of the cylindrical portion 101C is formed on the outer surface of the cylindrical body of the housing 102A. Further, a stepped portion with which the O-ring 103 can abut is formed on the outer surface of the housing 102A above the thread.

  The pipe portion 102B is disposed substantially along the vertical direction at the center of the housing 102A. Specifically, the pipe part 102B is provided so as to protrude substantially vertically downward from the center part of the upper base of the housing 102A. Further, the lower end of the pipe portion 102B has a shape that can be fitted into an outflow hole 101E provided in the lower bottom 101B of the case 101. Moreover, the upper end of the pipe part 102B is opened so that the cooling water that has passed through the ion exchange resin 102C and the gas accumulated in the ion exchanger 100 can pass therethrough. It should be noted that the opening at the upper end of the pipe portion 102B may have any size and number of diameters through which cooling water and gas accumulated in the ion exchanger 100 can pass, and is not limited to the shape shown in FIG. Absent. Further, the upper outer surface of the lower end fitted into the outflow hole 101E of the pipe portion 102B has a shape that can be fitted to the inner surface of a central hole 102F (described later) of the lower bottom 102D.

  The ion exchange resin 102C is filled between the housing 102A and the pipe portion 102B. Specifically, the ion exchange resin 102C is filled in a space surrounded by the casing 102A, the pipe portion 102B, and the lower bottom 102D. Note that the height at which the ion exchange resin 102C is filled is not limited to the height shown in FIG. Further, a filter (not shown) or a mesh (not shown) for preventing the passage of resin fine particles of the ion exchange resin 102C is provided in an opening at the upper end of the pipe portion 102B and an inflow hole 102E (described later) provided in the lower bottom 102D. May be arranged as appropriate.

  The lower bottom 102D is a member that is substantially circular in plan view and has an outer diameter that is substantially the same as the inner diameter of the cylindrical portion 101C of the case 101. Moreover, the periphery of lower bottom 102D has a shape which can be fitted with the lower end of the cylindrical body of housing | casing 102A. An inflow hole 102E is provided between the periphery and the center of the lower bottom 102D. The inflow hole 102E communicates with an inflow hole 101F provided in the lower bottom 101B of the case 101. In other words, the inflow hole 102E communicates with the pipe portion 101A through the inflow hole 101F. That is, the inflow hole 102E communicates with the refrigerant pipe 200 via the pipe portion 101A. Then, the cooling water flows into the case 101 from the pipe portion 101A through the inflow hole 101F, and then flows into the cartridge 102 through the inflow hole 102E. A cylindrical central hole 102F that protrudes substantially vertically upward from the central portion is formed in the central portion of the lower bottom 102D. The inner surface of the central hole 102F has a shape that can be fitted to the outer surface on the lower end side of the pipe portion 102B.

  Then, the lower end of the cylindrical body of the housing 102A and the peripheral edge of the lower bottom 102D are fitted, and the outer surface on the lower end side of the pipe portion 102B and the inner surface of the center hole 102F of the lower bottom 102D are fitted, A space filled with the ion exchange resin 102C is formed. Further, the space is filled with the ion exchange resin 102C by a predetermined method, and the cartridge 102 is formed. Then, the O-ring 103 is attached so as to contact the stepped portion of the outer surface of the cylindrical body of the casing 102A of the cartridge 102. Further, the cartridge 102 to which the O ring 103 is attached is screwed into the cylindrical portion 101C of the case 101, and the lower end of the pipe portion 102B of the cartridge 102 is fitted into the outflow hole 101E provided in the lower bottom 101B of the case 101. As a result, the cartridge 102 is detachably attached to the case 101.

  Next, the flow of cooling water will be described with reference to FIG. First, the cooling water flows from the refrigerant pipe 200 to the upstream side of the pipe portion 101A. Next, on the upstream side of the throttle portion 101D, the cooling water that has flowed into the upstream side of the pipe portion 101A goes to the downstream without flowing into the ion exchanger 100 and the cooling water that flows into the ion exchanger 100. Divided into cooling water.

  Next, on the upstream side of the throttle portion 101D, the cooling water that has flowed into the ion exchanger 100 through the inflow hole 101F passes through the cartridge 102 through the inflow hole 102E provided in the lower bottom 102D of the cartridge 102. Flows in. Next, the cooling water flowing into the cartridge 102 passes through the ion exchange resin 102C from the lower side toward the upper side.

  Next, the cooling water that has passed through the ion exchange resin 102C flows into the pipe portion 102B through the opening at the upper end of the pipe portion 102B. The cooling water that has flowed into the pipe portion 102B passes through the pipe portion 102B from the upper end toward the lower end.

  Next, the cooling water that has reached the lower end of the pipe portion 102B flows into the pipe portion 101A through the outflow hole 101E. Here, the cooling water that has flowed into the pipe portion 101A merges with the cooling water that has flowed downstream without flowing into the ion exchanger 100 on the upstream side of the throttle portion 101D, and is directed downstream of the pipe portion 101A. Flowing.

  According to the ion exchanger 100 according to the first embodiment described above, the inlet / outlet port provided on the pipe portion 101A connected to the refrigerant pipe 200 of the fuel cell and provided on the upper portion of the conventional ion exchanger is provided. Can be omitted. Thereby, the mounting property to the vehicle of the ion exchanger 100 can be improved. In addition, the cooling water flows into the ion exchanger 100 through the inflow hole 101F provided in the lower bottom 101B of the case 101 of the ion exchanger 100, passes through the ion exchange resin 102C, and then passes through the pipe portion 102B from the upper end. It passes toward the lower end and flows out through the outflow hole 101E provided in the lower bottom 101B. Therefore, when the cooling water passes through the ion exchange resin 102C and flows into the pipe portion 102B from the upper end of the pipe portion 102B, the gas accumulated in the upper portion of the ion exchange resin 102C or the upper portion of the ion exchanger 100 is also the cooling water. Together, it flows into the pipe portion 102B and is discharged to the outside of the ion exchanger 100. Therefore, the gas in the ion exchanger 100 can be discharged more reliably. Accordingly, it is possible to provide the ion exchanger 100 that can improve the mounting property on the vehicle and can discharge the gas in the ion exchanger 100 more reliably.

  In particular, immediately after the cartridge 102 is attached to the case 101, the cooling water may not reach the upper surface of the ion exchange resin 102C in the ion exchanger 100, so that gas remains in the upper part of the ion exchange resin 102C. It may be in a state. In addition, even after the cooling water is circulated in the ion exchanger 100, gas may be accumulated in the ion exchanger 100 due to various factors. Even in such a case, the ion exchanger 100 according to the first embodiment can discharge the gas together with the cooling water to the outside of the ion exchanger 100, and the upper part of the ion exchange resin 102C is cooled. Exposure from water can be prevented.

  Further, since the throttle portion 101D is provided inside the pipe portion 101A of the case 101, the cooling water can be suitably introduced into the ion exchanger 100.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, the mounting method of the cartridge 102 and the case 101 is not limited to the first embodiment. In addition, the sizes of the inner diameters of the inflow holes 101F and 102E and the outflow hole 101E can be set to optimum sizes depending on the flow rate, flow rate, and the like of the cooling water flowing into the ion exchanger 100.

100 ion exchanger 101 case (mounting part)
101A Pipe portion 101B Lower bottom 101C Cylindrical portion 101D Throttling portion 101E Outflow hole 101F Inflow hole 102 Cartridge 102A Housing 102B Pipe portion 102C Ion exchange resin 102D Lower bottom 102E Inflow hole 102F Central hole 103 O-ring 200 Refrigerant piping

Claims (1)

An ion exchanger provided on a refrigerant pipe of a fuel cell,
An attachment portion that is a cylindrical body with a bottom, formed to protrude vertically upward from the refrigerant pipe,
A cartridge detachably mounted on the mounting portion;
With
The lower bottom of the mounting portion has an inflow hole communicating with the refrigerant pipe between a peripheral edge and a center of the lower bottom, and an outflow hole communicating with the refrigerant pipe at the central portion of the lower bottom. And are provided,
The cartridge is
A housing that is a cylindrical body with an upper bottom that is detachably attached to the attachment portion;
A pipe portion disposed along the vertical direction in the center of the housing;
An ion exchange resin filled between the casing and the pipe portion;
With
The lower end of the pipe part is fitted in the outflow hole, and the upper end of the pipe part is opened so that the refrigerant can pass therethrough,
The refrigerant flows from the refrigerant pipe into the casing through the inflow hole, passes through the ion exchange resin, passes through the pipe portion from the upper end toward the lower end, and passes through the outflow hole to An ion exchanger that flows out from the housing to the refrigerant pipe.

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