WO2020050381A1 - Water softener - Google Patents

Water softener Download PDF

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Publication number
WO2020050381A1
WO2020050381A1 PCT/JP2019/035084 JP2019035084W WO2020050381A1 WO 2020050381 A1 WO2020050381 A1 WO 2020050381A1 JP 2019035084 W JP2019035084 W JP 2019035084W WO 2020050381 A1 WO2020050381 A1 WO 2020050381A1
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WO
WIPO (PCT)
Prior art keywords
water
exchange resin
ion exchange
tank
softener
Prior art date
Application number
PCT/JP2019/035084
Other languages
French (fr)
Japanese (ja)
Inventor
孝輔 高島
Original Assignee
東レ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018166656A external-priority patent/JP2020039992A/en
Priority claimed from JP2018170399A external-priority patent/JP2020040028A/en
Application filed by 東レ株式会社 filed Critical 東レ株式会社
Priority to CN201980057724.0A priority Critical patent/CN112672979A/en
Publication of WO2020050381A1 publication Critical patent/WO2020050381A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/05—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/50—Regeneration or reactivation of ion-exchangers; Apparatus therefor characterised by the regeneration reagents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/75—Regeneration or reactivation of ion-exchangers; Apparatus therefor of water softeners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/80—Automatic regeneration
    • B01J49/85—Controlling or regulating devices therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange

Definitions

  • the present invention relates to a water softener for performing water softening treatment by passing water to be treated through an ion exchange resin filled tank filled with an ion exchange resin.
  • the water softener using the ion exchange resin as a means to prevent the inflow of unnecessary water such as backflow to the chemical tank after the restoration of the power failure, before starting the position initialization process of the flow path control valve, Judge whether the valve is not closed, and when the chemical liquid valve is open, perform control to close the chemical liquid valve after performing the position initialization process of the chemical liquid valve first, and in the state where the chemical liquid valve is closed
  • the position initialization process of the bypass valve, the water inlet valve, and the water sampling valve is performed prior to the position initialization process of the liquid medicine valve (see Patent Document 1).
  • a water softener using an ion-exchange resin when the water to be treated accumulated in the ion-exchange resin-filled tank continues for a long time without passing water, the ion-exchange resin is added to the water to be treated in the ion-exchange resin-filled tank. Organic substances and the like are eluted from the water, and the water to be treated is colored by the organic substances and the like. Therefore, a water softener that automatically performs a cleaning operation in the ion exchange resin filling tank when water is not passed through the ion exchange resin filling tank (hereinafter, referred to as a non-water passing state) for a certain period of time has been proposed ( See Patent Document 2).
  • JP 2010-247103 A Japanese Patent Application Laid-Open No. 2001-246376
  • the time period during which the cleaning operation is started depends on the time when the non-water flowing state starts. It will be different. For example, the washing operation may be started in the evening time when water is frequently passed. If water is supplied during the washing operation, there is a problem that the water to be treated entered from the raw water inlet pipe flows out to the soft water outlet pipe as it is.
  • a water softener that solves the above-mentioned problems is a water softener that performs water softening treatment by allowing water to be treated to flow through an ion exchange resin, An ion exchange resin filling tank filled with ion exchange resin, A salt water tank for storing salt water for regenerating the ion exchange resin, A water softening operation in which water to be treated is passed through the ion exchange resin in the ion exchange resin filling tank to soften the water, a cleaning operation to wash the inside of the ion exchange resin filling tank, and the salt water in the salt water tank.
  • a regeneration unit that regenerates the ion exchange resin by passing water through the ion exchange resin in the ion exchange resin filling tank, and a control unit that switches a water supply operation for supplying water to the inside of the salt water tank, The control unit controls the cleaning operation to be performed at a predetermined time.
  • the predetermined time is between midnight and 6:00 am.
  • the predetermined time may be the same time every day.
  • a water softener is a water softener that performs a water softening treatment by passing water to be treated through an ion exchange resin, An ion exchange resin filling tank filled with ion exchange resin, A salt water tank for storing salt water for regenerating the ion exchange resin, A water softening operation in which water to be treated is passed through the ion exchange resin in the ion exchange resin filling tank to soften the water, a cleaning operation in which the inside of the ion exchange resin filling tank is washed, and the salt water in the salt water tank.
  • a regeneration unit for causing the ion exchange resin in the ion exchange resin filling tank to pass through the ion exchange resin to regenerate the ion exchange resin, and a control unit for switching a water supply operation for supplying water to the inside of the salt water tank, The control unit controls the cleaning operation and the water supply operation to be performed immediately after the electricity is supplied to the control unit.
  • the water softener of the present invention can be set to perform a washing operation in the ion exchange resin filling tank at a predetermined time every day. Therefore, if water is supplied during the washing operation, the water to be treated flowing from the raw water inlet pipe flows out to the soft water outlet pipe. Failure can be prevented.
  • FIG. 1 is a schematic configuration diagram showing an embodiment of the water softener of the present invention.
  • FIG. 2 is a schematic diagram showing the flow of water during the water softening operation in the water softener of FIG.
  • FIG. 3 is a schematic diagram illustrating a flow of water during a backwash operation in the water softener of FIG. 1.
  • FIG. 4 is a schematic diagram showing a flow of water during a regeneration operation in the water softener of FIG.
  • FIG. 5 is a schematic diagram illustrating a flow of water during a normal cleaning operation in the water softener of FIG. 1.
  • FIG. 6 is a schematic diagram illustrating a flow of water during a water supply operation in the water softener of FIG. 1.
  • FIG. 1 is a schematic configuration diagram showing an embodiment of the water softener of the present invention.
  • FIG. 2 is a schematic diagram showing the flow of water during the water softening operation in the water softener of FIG.
  • FIG. 3 is a schematic diagram illustrating a flow
  • FIG. 7 is a flowchart showing the execution timing of the cleaning water supply operation, the cleaning regeneration water supply operation, and the cleaning operation in the first embodiment.
  • FIG. 8 is a flowchart showing the timing of performing the cleaning water supply operation, the cleaning regeneration water supply operation, and the cleaning operation in the first embodiment.
  • FIG. 9 is a flowchart showing the execution timing of the cleaning regeneration water supply operation and the cleaning operation in the second embodiment.
  • the water softener 1 includes an ion-exchange resin filling tank 2 containing an ion-exchange resin 9, a control valve 3 for switching a flowing direction of raw water or the like on the upper surface of the ion-exchange resin filling tank 2, a control unit 13 for controlling the control valve 3, And a salt water tank 4 for storing salt water 14 for regenerating the ion exchange resin.
  • a raw water inlet pipe 5 for supplying raw water, a soft water outlet pipe 6 for supplying soft water, and a drain outlet pipe 7 are respectively connected to the control valve 3.
  • the salt water tank 4 and the ion exchange resin filling tank 2 are connected to each other by a salt water pipe 12 via a control valve 3.
  • the ion exchange resin filling tank 2 is a bottomed cylindrical container in which a predetermined amount of ion exchange resin 9 is filled.
  • the raw water supplied from the raw water inlet pipe 5 becomes the water to be treated and flows into the ion exchange resin filling tank 2 via the control valve 3 and the upper filter 10. Then, the water to be treated passes through the ion exchange resin filling tank 2 and is subjected to water softening treatment to become soft water.
  • the soft water enters the water collecting pipe 8 from the lower filter 11, passes through the water collecting pipe 8, and flows out of the soft water outlet pipe 6 via the control valve 3.
  • the upper filter 10 has a filter function that does not leak the ion exchange resin 9 and allows the water to be treated to pass through. Therefore, the size of the opening formed in the upper filter 10 is smaller than the particle size of the ion exchange resin 9. Further, in order to reduce the pressure loss during water flow, it is preferable that the aperture ratio of the upper filter 10 is as large as the strength allows.
  • the lower filter 11 also has a filter function that does not leak the ion exchange resin 9 and allows the water to be treated to pass. Therefore, the size of the opening formed in the lower filter 11 is also smaller than the particle size of the ion exchange resin 9. Further, in order to reduce the pressure loss during water flow, it is preferable that the aperture ratio of the lower filter 11 is as large as the strength allows.
  • the control unit 13 includes a control board provided with a microcomputer for controlling each unit of the water softener.
  • the control unit 13 includes a timer A as a time measuring means for determining whether to start a regeneration operation or a cleaning operation of the ion exchange resin 9 described later, and a counter for counting the accumulated water flow to the ion exchange resin filling tank 2. And a counter for counting the total amount of water flowing into the ion exchange resin filling tank 2.
  • the water softener 1 performs various operations such as a reverse cleaning operation, a regeneration operation, a normal cleaning operation, and a water supply operation, in addition to a water softening operation for supplying soft water. Under the control of the control unit 13 provided in the water softener 1, the regeneration operation and the backwashing operation of the ion exchange resin 9 are automatically performed at an appropriate time. In the present application, the reverse cleaning operation and the normal cleaning operation are collectively referred to as a cleaning operation.
  • the water softening operation is a process of softening raw water, which is water to be treated.
  • the water to be treated supplied from the raw water inlet pipe 5 flows into the upper filter 10 through the control valve 3 and flows downward from the upper filter 10 through the ion exchange resin filling tank 2.
  • the water to be treated which is hard water, is made soft by the action of the ion exchange resin 9.
  • the soft water flows into the lower filter 11 and flows out through the water collecting pipe 8 to the soft water outlet pipe 6 via the control valve 3.
  • the back washing operation is a process of discharging water adhering to the ion exchange resin 9 by passing water through the ion exchange resin filling tank 2 in a direction opposite to that of the water softening operation.
  • the control unit 13 switches the flow path in the control valve 3 so that the raw water from the raw water inlet pipe 5 flows into the lower filter 11 through the water collecting pipe 8 via the control valve 3. Then, the raw water flows from the lower side to the upper side in the ion exchange resin filling tank 2 and flows into the upper filter 10. Finally, the raw water containing the foreign matter is discharged from the drain outlet pipe 7 through the control valve 3.
  • the regeneration operation is a step of flowing salt water through the ion exchange resin 9 in the ion exchange resin filling tank 2 to perform a regeneration treatment of the ion exchange resin 9.
  • the flow path in the control valve 3 is switched by the control unit 13, and the salt water 14 in the salt water tank 4 flows into the upper filter 10 via the control valve 3 through the salt water pipe 12. Then, the salt water flows downward from the upper filter 10 through the ion exchange resin filling tank 2 to regenerate the ion exchange resin 9.
  • the salt water used for the regeneration treatment of the ion exchange resin 9 flows into the lower filter 11, and is discharged from the drain outlet pipe 7 through the water collecting pipe 8 via the control valve 3.
  • the normal cleaning operation is a process in which water is passed through the ion exchange resin filling tank 2 in the same direction as the water softening operation to wash and discharge salt water and the like remaining in the piping.
  • the flow path in the control valve 3 is switched by the control unit 13, and the raw water from the raw water inlet pipe 5 flows into the upper filter 10 via the control valve 3. Then, the raw water flows downward in the ion exchange resin filling tank 2 from the upper filter 10, flows into the lower filter 11, and is discharged from the drain outlet pipe 7 through the water collecting pipe 8 via the control valve 3.
  • the water supply operation is a process for generating the salt water 14 before the regeneration operation of the ion exchange resin 9.
  • the control unit 13 switches the flow path in the control valve 3, and the raw water from the raw water inlet pipe 5 is passed through the control valve 3 to the salt water pipe 12, and supplied to the salt water tank 4 by a predetermined amount.
  • FIG. 7 is a flowchart showing the execution timing of various operations in the water softener 1 in the first embodiment.
  • the control valve 3 switches the flow path to perform the reverse cleaning operation, the normal cleaning operation, and the water supply operation of the ion exchange resin 9 in this order (step W1).
  • the operation in step W1 is referred to as a washing water supply operation.
  • a sufficient amount of raw water necessary for removing foreign substances adhering to the ion exchange resin 9 and discharging the salt water remaining in the pipe is supplied to the ion exchange resin filling tank 2 and further to the salt water tank 4. Also, a predetermined amount of raw water is supplied.
  • control unit 13 When the washing water supply operation is completed, the control unit 13 counts the timer A for monitoring the elapsed time after the completion of the washing water supply operation, and counts the integrated amount counter for monitoring the integrated value of the amount of water flow after the completion of the washing water supply operation. Is started (step S1).
  • the time at which the regeneration operation or the cleaning operation starts is set as the set time.
  • the regeneration operation and the cleaning operation are set to be performed between 0:00 am and 6:00 am, which is relatively infrequently used, preferably at 3:00 am.
  • the control unit 13 determines whether the current time is a set time (step S2). When the current time reaches the set time (the determination in step S2 is “YES”), the process proceeds to step S3. In FIG. 7, the set time is set to 3:00 am
  • the time set in step S2 can be changed as appropriate according to the frequency of use of the water softener. For example, if the frequency of use at 3:00 am is high due to night work or the like, the regeneration operation or the washing operation can be performed at 3:00 pm.
  • the timer A and the integrated amount counter determine the timing at which the regeneration operation of the ion exchange resin 9 is performed.
  • the regeneration operation is set to be performed every 9 days or every 1.9 tons of accumulated water flow.
  • the control unit 13 first determines whether or not the count value of the timer A is less than 9 days (Step S3). If the count of timer A is less than 9 days ("YES" in step S3), it is then determined whether the count value of the integrated water flow is less than 1.9 tons (step S4).
  • the set integration amount in step S4 can be appropriately changed according to the hardness of the water to be treated. For example, when the hardness of the water to be treated is high, the amount of the water to be treated is small, so that the regeneration operation can be set to be performed at short intervals such as every 1.5 tons.
  • step S6 When the count of the timer A reaches 9 days or more (the determination in step S3 is “NO”), the control unit 13 switches the flow path of the control valve 3 and performs the regeneration operation of the ion exchange resin 9 (step S6).
  • the reverse cleaning operation is performed before the regeneration operation, and the normal cleaning operation and the water supply operation are performed in this order after the regeneration operation.
  • a series of operations in which the reverse cleaning operation, the regeneration operation, the normal cleaning operation, and the water supply operation are performed in this order are referred to as a cleaning regeneration water supply operation.
  • the control unit 13 resets the count of the timer A and the count of the integrated amount counter (Step S7).
  • the timer A and the accumulated amount counter start counting again (step S1), and the elapsed time after the regeneration operation of the ion exchange resin 9 and the accumulated water flow amount are measured.
  • step S6 determines that the accumulated water flow is 1.9 tons or more.
  • the flow path of the control valve 3 is switched to perform the washing / regenerating water supply operation of the ion exchange resin 9 (step S6).
  • the elapsed days are less than 9 days (judgment in step S3 is "YES”), the accumulated water flow is less than 1.9 tons (judgment in step S4 is "YES”), and the water is passed through the water softener 1.
  • the water to be treated in the ion exchange resin filling tank 2 is in a state of staying in the ion exchange resin filling tank 2. If this state continues for a long time, the water to be treated will be colored by organic substances leached from the ion exchange resin 9 and the like, and it is necessary to clean the inside of the ion exchange resin filling tank 2.
  • the washing operation reverse washing operation and normal washing operation in the ion exchange resin filling tank 2 is performed.
  • the washing operation for a predetermined time, the foreign substances adhering to the ion exchange resin 9 are removed, and raw water in an amount necessary to discharge the salt water remaining in the pipe is supplied to the ion exchange resin filling tank 2.
  • the cleaning operation is performed immediately after power is supplied to the control unit 13. It is possible to prevent the salt water in the resin filling tank 2 from flowing out of the soft water outlet pipe 6. Furthermore, since the water supply operation is performed immediately after the electricity is supplied to the control unit 13, it is possible to prevent the salt water 14 from being insufficient in the next regeneration operation and insufficient regeneration.
  • FIG. 8 is a flowchart showing the implementation timing of the first embodiment.
  • the difference between the first embodiment and the above-described first embodiment is that, in the first embodiment, a process of determining whether or not to perform the cleaning and water supply operation based on the value of the total flow rate before performing the cleaning and water supply operation is added. I have. Except for the added processing, the third embodiment is the same as the first embodiment, and thus the common parts are denoted by the same reference numerals and the description thereof is omitted.
  • Step W1 immediately after electricity is supplied to the control unit 13 of the water softener 1, the control unit 13 starts counting of the total water flow counter that monitors the integrated value of the water flow.
  • the total water flow counter continues to accumulate the amount of water flowing through the water softener 1 without being reset, and determines the timing for performing the cleaning water supply operation.
  • the total water flow is set to 100 L or more, assuming the amount of water to be used in the washing operation performed immediately after the water softener 1 is installed in a general household.
  • the control unit 13 determines whether the count value of the total water flow is 100 L or more (step W2). If the total water flow counter is less than 100 L (the determination in step W2 is “NO”), the process skips step W3 and proceeds to step S1. If the total water flow counter is 100 L or more (the determination in step W2 is “YES”), the process proceeds to step W3, and then proceeds to step S1.
  • step W3 the control valve 3 switches the flow path, and the cleaning water supply operation is performed.
  • the reason for selecting whether or not to perform the washing and water supply operation in step W3 according to the integrated value of the water flow immediately after the electricity is supplied to the control unit 13 is as follows.
  • the water softener 1 is installed in a general household and started to be used by a user, it is necessary to perform the washing and water supply operation immediately after the controller 13 is supplied with electricity. Therefore, using the amount of water used in the washing operation performed immediately after being installed in a general home as a guide, if the total water flow is equal to or more than the guide value, immediately after the control unit 13 is supplied with electricity.
  • the cleaning water supply operation is performed.
  • the reference amount is set to 100 L.
  • the total water flow rate in step W2 can be appropriately changed according to the water flow rate of the washing operation performed immediately after the construction of the water softener 1. For example, if the amount of water flow in the washing operation is small due to a small amount of the ion exchange resin 9 in the ion exchange resin filling tank 2, the total water flow can be set to 50 L.
  • FIG. 9 is a flowchart showing the execution timing of various operations in the water softener 1 in the second embodiment. Note that the description of portions having the same contents as the flowchart of the first embodiment will be omitted.
  • Step S1 Immediately after the electricity is supplied to the control unit 13 of the water softener 1, the control unit 13 counts the timer A that monitors the elapsed time after the completion of the cleaning water supply operation, and integrates the water flow amount after the completion of the cleaning water supply operation.
  • the counting of the integrated amount counter for monitoring the value is started (step S1).
  • Step S2 is the same as in the first embodiment. If the frequency of use differs for each day of the week, the set time can be changed for each day of the week. For example, it can be set to 4:00 am on Monday, 5:00 am on Tuesday, and so on. The subsequent steps are the same as in the first embodiment.
  • step S2 since the operation is performed as described above, when the set time is reached every day (the determination in step S2 is “YES”), the process proceeds to step S5 or step S6, and the reverse cleaning operation and the normal cleaning operation, that is, the cleaning operation Will be
  • Raw water was RO water having a pH of 7.5 ⁇ 0.5
  • the ion exchange resin filling tank 2 was filled with RO water
  • the salt water tank 4 was filled with salt water 14.
  • the washing / regeneration water supply operation in the second embodiment was defined as one cycle, and two cycles were performed. Thereafter, 2 L of RO water was flowed from the raw water inlet pipe 2 into the ion exchange resin filling tank 2, and water coming out of the soft water outlet pipe 6 was sampled. This water was used as the immersion liquid raw water, and the quality of the immersion liquid raw water was measured.
  • the standards for the amounts of increase in chromaticity, turbidity, and CODMn differ from country to country.
  • the amount of increase in chromaticity is 5.0 degrees or less
  • the amount of increase in turbidity is 0.5 degrees or less
  • the increase in CODMn is based on 2.0 mg / L or less.
  • Example 1 The washing / regeneration water supply operation was performed for two cycles, and left for 24 hours. Twenty-four hours later, 2 L of RO water was flowed from the raw water inlet pipe 2 to the ion-exchange resin filling tank 2 and then came out of the soft water outlet pipe 6 in order to collect the water retained in the ion-exchange resin filling tank 2. Water was sampled. The water quality of this water was measured, and the chromaticity, turbidity, and increase in CODMn were measured by comparing the water quality after 24 hours with the quality of the immersion liquid raw water. The increase in chromaticity, turbidity, and CODMn were all very small values. Table 1 summarizes the increase in chromaticity, turbidity, and CODMn. The above criteria were met.
  • Example 2 Except for leaving for 72 hours, the chromaticity, turbidity, and increase in CODMn were measured in the same manner as in Experiment 1. The increase in chromaticity, turbidity, and CODMn all exceeded the results after 24 hours. Table 1 summarizes the increase in chromaticity, turbidity, and CODMn. Did not meet the above criteria.
  • the washing operation in the ion-exchange resin filling tank can be set to be performed at a predetermined time every day, if water is supplied during the washing operation, the water to be treated flowing from the raw water inlet pipe is softened to the soft water outlet pipe.
  • the predetermined time is set to a time zone in which water is not passed, it is possible to provide a water softener that can prevent such a problem.
  • the present invention having this effect is useful for a water softener that performs water softening treatment by allowing water to be treated to flow through an ion exchange resin filled tank filled with an ion exchange resin.

Abstract

The present invention is a water softener (1) for softening water by passing to-be-treated water through an ion-exchange resin (9), the water softener comprising: an ion-exchange resin-filled tank (2) filled with the ion-exchange resin (9); a saltwater tank (4) for storing saltwater (14) for regenerating the ion-exchange resin (9); and a controller (13) for switching between a water softening operation in which water is softened by passing the to-be-treated water through the ion-exchange resin (9) in the ion-exchange resin-filled tank (2), a washing operation in which the interior of the ion-exchange resin-filled tank (2) is washed, a regenerating operation in which the saltwater (14) in the saltwater tank (4) is passed through the ion-exchange resin (9) in the ion-exchange resin-filled tank (2) to regenerate the ion-exchange resin (9), and a water-supplying operation in which water is supplied to the interior of the saltwater tank (4).

Description

軟水器Water softener
　本発明は、イオン交換樹脂が充填されたイオン交換樹脂充填槽に被処理水を通水させて軟水化処理を行う軟水器に関する。 The present invention relates to a water softener for performing water softening treatment by passing water to be treated through an ion exchange resin filled tank filled with an ion exchange resin.
　イオン交換樹脂を用いた軟水器は、停電復旧後に薬液タンクへの逆流などの不要な水の流入を防止し得る手段として、流路制御弁の位置初期化処理を開始するのに先立って、薬液弁が閉じられていないかを判断し、薬液弁が開いている状態であるときには薬液弁の位置初期化処理を最初に行った後に薬液弁を閉じる制御を行い、薬液弁が閉じている状態であるときには薬液弁の位置初期化処理に先行してバイパス弁、入水弁および採水弁の位置初期化処理を行うように構成されている（特許文献１参照）。なお、特許文献１の軟水器では、薬液弁の逆流等は防ぐことができるが、イオン交換樹脂充填槽内に薬液が残っている状態で通水を行うと薬液が吐水される問題がある。さらに、薬液が使用された場合は、再生処理に必要な薬液量が不足してイオン交換樹脂の再生が不十分となる問題がある。　　　　 The water softener using the ion exchange resin, as a means to prevent the inflow of unnecessary water such as backflow to the chemical tank after the restoration of the power failure, before starting the position initialization process of the flow path control valve, Judge whether the valve is not closed, and when the chemical liquid valve is open, perform control to close the chemical liquid valve after performing the position initialization process of the chemical liquid valve first, and in the state where the chemical liquid valve is closed In some cases, the position initialization process of the bypass valve, the water inlet valve, and the water sampling valve is performed prior to the position initialization process of the liquid medicine valve (see Patent Document 1). In addition, in the water softener of Patent Literature 1, backflow of the chemical solution valve or the like can be prevented, but there is a problem that the chemical solution is discharged when the water is passed while the chemical solution remains in the ion exchange resin filling tank. Further, when a chemical solution is used, there is a problem that the amount of the chemical solution required for the regeneration treatment is insufficient and the regeneration of the ion exchange resin is insufficient.
　一方、イオン交換樹脂を用いた軟水器は、通水が行なわれずにイオン交換樹脂充填槽内に溜まった被処理水が長時間継続すると、イオン交換樹脂充填槽内の被処理水にイオン交換樹脂から有機物等が溶出し、これら有機物等によって被処理水が着色されてしまう。そのため、イオン交換樹脂充填槽に通水されない状態（以下、非通水状態とする）が一定時間継続すると、自動的にイオン交換樹脂充填槽内の洗浄運転を行なう軟水器が提案されている（特許文献２参照）。 On the other hand, a water softener using an ion-exchange resin, when the water to be treated accumulated in the ion-exchange resin-filled tank continues for a long time without passing water, the ion-exchange resin is added to the water to be treated in the ion-exchange resin-filled tank. Organic substances and the like are eluted from the water, and the water to be treated is colored by the organic substances and the like. Therefore, a water softener that automatically performs a cleaning operation in the ion exchange resin filling tank when water is not passed through the ion exchange resin filling tank (hereinafter, referred to as a non-water passing state) for a certain period of time has been proposed ( See Patent Document 2).
日本国特開２０１０－２４７１０３号公報JP 2010-247103 A 日本国特開２００１－２４６３７６号公報Japanese Patent Application Laid-Open No. 2001-246376
　しかしながら、特許文献２に提案されている軟水器では、非通水状態が一定時間継続してから洗浄運転を行うので、非通水状態が開始した時刻によって洗浄運転が開始される時間帯が毎回異なってくる。例えば、通水頻度が高い夕刻の時間帯に洗浄運転が開始されることもある。洗浄運転中に通水が行なわれると、原水入口管から入った被処理水が、そのまま軟水出口管へ流出してしまうという問題がある。 However, in the water softener proposed in Patent Literature 2, since the cleaning operation is performed after the non-water passing state continues for a certain period of time, the time period during which the cleaning operation is started depends on the time when the non-water flowing state starts. It will be different. For example, the washing operation may be started in the evening time when water is frequently passed. If water is supplied during the washing operation, there is a problem that the water to be treated entered from the raw water inlet pipe flows out to the soft water outlet pipe as it is.
　（１）上記課題を解決する本発明の一実施態様の軟水器は、イオン交換樹脂に被処理水を通水させて軟水化処理を行う軟水器であって、
　イオン交換樹脂が充填されたイオン交換樹脂充填槽と、
　イオン交換樹脂を再生するための塩水を貯めるための塩水タンクと、
　上記イオン交換樹脂充填槽内の上記イオン交換樹脂に被処理水を通水させて軟水化する軟水化運転、上記イオン交換樹脂充填槽の内部を洗浄する洗浄運転、上記塩水タンク内の前記塩水を上記イオン交換樹脂充填槽内の上記イオン交換樹脂に通水させてイオン交換樹脂を再生する再生運転、および上記塩水タンクの内部に水を供給する給水運転を切り替える制御部と、を備え、
　上記制御部が、所定の時刻に前記洗浄運転が行なわれるように制御する。
　（２）本発明の一実施態様の軟水器は、上記所定の時刻が午前０時から午前６時の間であることが好ましい。
　（３）本発明の一実施態様の軟水器は、上記所定の時刻が毎日同じ時刻であってもよい。
　（４）本発明の一実施態様の軟水器は、イオン交換樹脂に被処理水を通水させて軟水化処理を行う軟水器であって、
　イオン交換樹脂が充填されたイオン交換樹脂充填槽と、
　イオン交換樹脂を再生するための塩水を貯めるための塩水タンクと、
　前記イオン交換樹脂充填槽内の前記イオン交換樹脂に被処理水を通水させて軟水化する軟水化運転、前記イオン交換樹脂充填槽の内部を洗浄する洗浄運転、前記塩水タンク内の前記塩水を前記イオン交換樹脂充填槽内の前記イオン交換樹脂に通水させてイオン交換樹脂を再生する再生運転、および前記塩水タンクの内部に水を供給する給水運転を切り替える制御部と、を備え、
　前記制御部が、当該制御部へ電気が供給された直後に、前記洗浄運転および前記給水運転が行われるように制御する。 (1) A water softener according to an embodiment of the present invention that solves the above-mentioned problems is a water softener that performs water softening treatment by allowing water to be treated to flow through an ion exchange resin,
An ion exchange resin filling tank filled with ion exchange resin,
A salt water tank for storing salt water for regenerating the ion exchange resin,
A water softening operation in which water to be treated is passed through the ion exchange resin in the ion exchange resin filling tank to soften the water, a cleaning operation to wash the inside of the ion exchange resin filling tank, and the salt water in the salt water tank. A regeneration unit that regenerates the ion exchange resin by passing water through the ion exchange resin in the ion exchange resin filling tank, and a control unit that switches a water supply operation for supplying water to the inside of the salt water tank,
The control unit controls the cleaning operation to be performed at a predetermined time.
(2) In the water softener according to one embodiment of the present invention, it is preferable that the predetermined time is between midnight and 6:00 am.
(3) In the water softener according to one embodiment of the present invention, the predetermined time may be the same time every day.
(4) A water softener according to one embodiment of the present invention is a water softener that performs a water softening treatment by passing water to be treated through an ion exchange resin,
An ion exchange resin filling tank filled with ion exchange resin,
A salt water tank for storing salt water for regenerating the ion exchange resin,
A water softening operation in which water to be treated is passed through the ion exchange resin in the ion exchange resin filling tank to soften the water, a cleaning operation in which the inside of the ion exchange resin filling tank is washed, and the salt water in the salt water tank. A regeneration unit for causing the ion exchange resin in the ion exchange resin filling tank to pass through the ion exchange resin to regenerate the ion exchange resin, and a control unit for switching a water supply operation for supplying water to the inside of the salt water tank,
The control unit controls the cleaning operation and the water supply operation to be performed immediately after the electricity is supplied to the control unit.
　本発明の軟水器は、毎日所定の時刻にイオン交換樹脂充填槽内の洗浄運転を実施するように設定できる。そのため、洗浄運転中に通水を行なうと原水入口管から流れる被処理水が軟水出口管へ流出してしまうが、所定の時刻を通水を行わない時間帯に設定することで、このような不具合を防止できる。 軟 The water softener of the present invention can be set to perform a washing operation in the ion exchange resin filling tank at a predetermined time every day. Therefore, if water is supplied during the washing operation, the water to be treated flowing from the raw water inlet pipe flows out to the soft water outlet pipe. Failure can be prevented.
図１は、本発明の軟水器の一実施形態を示す概略構成図である。FIG. 1 is a schematic configuration diagram showing an embodiment of the water softener of the present invention. 図２は、図１の軟水器での軟水化運転時の水の流れを示す概略図である。FIG. 2 is a schematic diagram showing the flow of water during the water softening operation in the water softener of FIG. 図３は、図１の軟水器での逆洗浄運転時の水の流れを示す概略図である。FIG. 3 is a schematic diagram illustrating a flow of water during a backwash operation in the water softener of FIG. 1. 図４は、図１の軟水器での再生運転時の水の流れを示す概略図である。FIG. 4 is a schematic diagram showing a flow of water during a regeneration operation in the water softener of FIG. 図５は、図１の軟水器での正洗浄運転時の水の流れを示す概略図である。FIG. 5 is a schematic diagram illustrating a flow of water during a normal cleaning operation in the water softener of FIG. 1. 図６は、図１の軟水器での給水運転時の水の流れを示す概略図である。FIG. 6 is a schematic diagram illustrating a flow of water during a water supply operation in the water softener of FIG. 1. 図７は、実施形態１での洗浄給水運転、洗浄再生給水運転および洗浄運転の実施タイミングを示すフローチャートである。FIG. 7 is a flowchart showing the execution timing of the cleaning water supply operation, the cleaning regeneration water supply operation, and the cleaning operation in the first embodiment. 図８は、参考実施形態１での洗浄給水運転、洗浄再生給水運転および洗浄運転の実施タイミングを示すフローチャートである。FIG. 8 is a flowchart showing the timing of performing the cleaning water supply operation, the cleaning regeneration water supply operation, and the cleaning operation in the first embodiment. 図９は、実施形態２での洗浄再生給水運転および洗浄運転の実施タイミングを示すフローチャートである。FIG. 9 is a flowchart showing the execution timing of the cleaning regeneration water supply operation and the cleaning operation in the second embodiment.
　[軟水器の構成]
　本発明の軟水器の一実施形態を図面に基づいて説明する。図１を参照する。軟水器１は、イオン交換樹脂９を収納したイオン交換樹脂充填槽２、イオン交換樹脂充填槽２の上面に原水などの通水方向を切替えるコントロールバルブ３、コントロールバルブ３を制御する制御部１３、およびイオン交換樹脂を再生する塩水１４を貯めるための塩水タンク４を備えている。コントロールバルブ３には、原水を供給する原水入口管５、軟水を供給する軟水出口管６、および排水出口管７がそれぞれ連設されている。塩水タンク４とイオン交換樹脂充填槽２とはコントロールバルブ３を介して塩水管１２で連設されている。 [Structure of water softener]
An embodiment of the water softener of the present invention will be described with reference to the drawings. Please refer to FIG. The water softener 1 includes an ion-exchange resin filling tank 2 containing an ion-exchange resin 9, a control valve 3 for switching a flowing direction of raw water or the like on the upper surface of the ion-exchange resin filling tank 2, a control unit 13 for controlling the control valve 3, And a salt water tank 4 for storing salt water 14 for regenerating the ion exchange resin. A raw water inlet pipe 5 for supplying raw water, a soft water outlet pipe 6 for supplying soft water, and a drain outlet pipe 7 are respectively connected to the control valve 3. The salt water tank 4 and the ion exchange resin filling tank 2 are connected to each other by a salt water pipe 12 via a control valve 3.
　イオン交換樹脂充填槽２は、内部に所定量のイオン交換樹脂９が充填された有底筒形の容器である。原水入口管５から供給される原水が被処理水となって、コントロールバルブ３および上部フィルタ１０を介してイオン交換樹脂充填槽２内に流入される。そして、被処理水がイオン交換樹脂充填槽２内を通過することによって軟水化処理されて軟水となる。軟水は下部フィルタ１１から集水管８に入り、集水管８を通って、コントロールバルブ３を介して軟水出口管６から流出する。 The ion exchange resin filling tank 2 is a bottomed cylindrical container in which a predetermined amount of ion exchange resin 9 is filled. The raw water supplied from the raw water inlet pipe 5 becomes the water to be treated and flows into the ion exchange resin filling tank 2 via the control valve 3 and the upper filter 10. Then, the water to be treated passes through the ion exchange resin filling tank 2 and is subjected to water softening treatment to become soft water. The soft water enters the water collecting pipe 8 from the lower filter 11, passes through the water collecting pipe 8, and flows out of the soft water outlet pipe 6 via the control valve 3.
　上部フィルタ１０は、イオン交換樹脂９は漏らさず、被処理水は通過させるフィルタ機能を有する。そのため、上部フィルタ１０に形成されている開口の大きさはイオン交換樹脂９の粒径よりも小さくなっている。また、通水での圧力損失を低減させるため、上部フィルタ１０の開口率は強度の許す限り大きい方が好ましい。同様に、下部フィルタ１１も、イオン交換樹脂９は漏らさず、被処理水は通過させるフィルタ機能を有する。そのため、下部フィルタ１１に形成されている開口の大きさもイオン交換樹脂９の粒径よりも小さくなっている。また、通水での圧力損失を低減させるため、 下部フィルタ１１の開口率も強度の許す限り大きい方が好ましい。 (4) The upper filter 10 has a filter function that does not leak the ion exchange resin 9 and allows the water to be treated to pass through. Therefore, the size of the opening formed in the upper filter 10 is smaller than the particle size of the ion exchange resin 9. Further, in order to reduce the pressure loss during water flow, it is preferable that the aperture ratio of the upper filter 10 is as large as the strength allows. Similarly, the lower filter 11 also has a filter function that does not leak the ion exchange resin 9 and allows the water to be treated to pass. Therefore, the size of the opening formed in the lower filter 11 is also smaller than the particle size of the ion exchange resin 9. Further, in order to reduce the pressure loss during water flow, it is preferable that the aperture ratio of the lower filter 11 is as large as the strength allows.
　制御部１３は、軟水器の各部を制御するマイコンを備えた制御基板で構成されている。制御部１３には、後述するイオン交換樹脂９の再生運転や洗浄運転を開始するかどうかを判断するための計時手段としてのタイマーＡ、イオン交換樹脂充填槽２への積算通水量をカウントするカウンター、およびイオン交換樹脂充填槽２への総通水量をカウントするカウンターを備えている。 The control unit 13 includes a control board provided with a microcomputer for controlling each unit of the water softener. The control unit 13 includes a timer A as a time measuring means for determining whether to start a regeneration operation or a cleaning operation of the ion exchange resin 9 described later, and a counter for counting the accumulated water flow to the ion exchange resin filling tank 2. And a counter for counting the total amount of water flowing into the ion exchange resin filling tank 2.
　[軟水器の動作]
　次に、このように構成された軟水器１の動作について説明する。軟水器１は、軟水を供給する軟水化運転の他に、逆洗浄運転、再生運転、正洗浄運転、給水運転などの各種の運転を行う。軟水器１に備えられた制御部１３の制御によって、適時にイオン交換樹脂９の再生運転や逆洗浄運転が自動的に行なわれる。なお、本願では、逆洗浄運転と正洗浄運転とを合わせて洗浄運転と称する。 [Operation of water softener]
Next, the operation of the water softener 1 configured as described above will be described. The water softener 1 performs various operations such as a reverse cleaning operation, a regeneration operation, a normal cleaning operation, and a water supply operation, in addition to a water softening operation for supplying soft water. Under the control of the control unit 13 provided in the water softener 1, the regeneration operation and the backwashing operation of the ion exchange resin 9 are automatically performed at an appropriate time. In the present application, the reverse cleaning operation and the normal cleaning operation are collectively referred to as a cleaning operation.
　[軟水化運転]
　軟水化運転について図２を用いて説明する。軟水化運転は、被処理水である原水を軟水化する工程である。原水入口管５から供給される被処理水を、コントロールバルブ３を介して上部フィルタ１０に流入させ、上部フィルタ１０からイオン交換樹脂充填槽２内を下向きに流す。そして、イオン交換樹脂９の作用により硬水である被処理水を軟水にする。その後、軟水を下部フィルタ１１に流入させ、集水管８を通してコントロールバルブ３を介して軟水出口管６に流出する。 [Water softening operation]
The water softening operation will be described with reference to FIG. The water softening operation is a process of softening raw water, which is water to be treated. The water to be treated supplied from the raw water inlet pipe 5 flows into the upper filter 10 through the control valve 3 and flows downward from the upper filter 10 through the ion exchange resin filling tank 2. Then, the water to be treated, which is hard water, is made soft by the action of the ion exchange resin 9. Thereafter, the soft water flows into the lower filter 11 and flows out through the water collecting pipe 8 to the soft water outlet pipe 6 via the control valve 3.
　[逆洗浄運転]
　逆洗浄運転について図３を用いて説明する。逆洗浄運転は、イオン交換樹脂充填槽２に軟水化運転と逆方向の通水を行ってイオン交換樹脂９に付着した異物を排出する工程である。制御部１３によりコントロールバルブ３における流路を切替えて、原水入口管５からの原水を、コントロールバルブ３を介して、集水管８を通して下部フィルタ１１に流入させる。そして原水を、イオン交換樹脂充填槽２の内部を下側から上側に向かって流し、上部フィルタ１０に流入させる。最後に、異物を含んだ原水を、コントロールバルブ３を介して排水出口管７から排出する。 [Backwashing operation]
The back washing operation will be described with reference to FIG. The reverse washing operation is a process of discharging water adhering to the ion exchange resin 9 by passing water through the ion exchange resin filling tank 2 in a direction opposite to that of the water softening operation. The control unit 13 switches the flow path in the control valve 3 so that the raw water from the raw water inlet pipe 5 flows into the lower filter 11 through the water collecting pipe 8 via the control valve 3. Then, the raw water flows from the lower side to the upper side in the ion exchange resin filling tank 2 and flows into the upper filter 10. Finally, the raw water containing the foreign matter is discharged from the drain outlet pipe 7 through the control valve 3.
　[再生運転]
　再生運転について図４を用いて説明する。再生運転は、イオン交換樹脂充填槽２内のイオン交換樹脂９に塩水を流して、イオン交換樹脂９の再生処理を行う工程である。制御部１３によりコントロールバルブ３における流路を切替えて、塩水タンク４内の塩水１４を、塩水管１２を通し、コントロールバルブ３を介して上部フィルタ１０に流入させる。そして塩水を、上部フィルタ１０からイオン交換樹脂充填槽２内を下向きに流し、イオン交換樹脂９の再生を行う。イオン交換樹脂９の再生処理に使われた塩水を、下部フィルタ１１に流入させ、集水管８を通してコントロールバルブ３を介して排水出口管７から排出する。 [Regenerative operation]
The regeneration operation will be described with reference to FIG. The regeneration operation is a step of flowing salt water through the ion exchange resin 9 in the ion exchange resin filling tank 2 to perform a regeneration treatment of the ion exchange resin 9. The flow path in the control valve 3 is switched by the control unit 13, and the salt water 14 in the salt water tank 4 flows into the upper filter 10 via the control valve 3 through the salt water pipe 12. Then, the salt water flows downward from the upper filter 10 through the ion exchange resin filling tank 2 to regenerate the ion exchange resin 9. The salt water used for the regeneration treatment of the ion exchange resin 9 flows into the lower filter 11, and is discharged from the drain outlet pipe 7 through the water collecting pipe 8 via the control valve 3.
　[正洗浄運転]
　正洗浄運転について図５を用いて説明する。正洗浄運転は、イオン交換樹脂充填槽２に軟水化運転と同じ方向の通水を行って配管内に残った塩水などを洗浄して排出する工程である。制御部１３によりコントロールバルブ３における流路を切替えて、原水入口管５からの原水を、コントロールバルブ３を介して上部フィルタ１０に流入させる。そして原水を、上部フィルタ１０からイオン交換樹脂充填槽２内を下向きに流し、下部フィルタ１１に流入させ、集水管８を通してコントロールバルブ３を介して排水出口管７から排出する。 [Regular cleaning operation]
The normal cleaning operation will be described with reference to FIG. The normal cleaning operation is a process in which water is passed through the ion exchange resin filling tank 2 in the same direction as the water softening operation to wash and discharge salt water and the like remaining in the piping. The flow path in the control valve 3 is switched by the control unit 13, and the raw water from the raw water inlet pipe 5 flows into the upper filter 10 via the control valve 3. Then, the raw water flows downward in the ion exchange resin filling tank 2 from the upper filter 10, flows into the lower filter 11, and is discharged from the drain outlet pipe 7 through the water collecting pipe 8 via the control valve 3.
　[給水運転]
　給水運転について図６を用いて説明する。給水運転は、イオン交換樹脂９の再生運転の前の、塩水１４を生成するための工程である。制御部１３によりコントロールバルブ３における流路を切替えて、原水入口管５からの原水を、コントロールバルブ３を介して塩水管１２に通し、塩水タンク４へ所定の分量だけ給水する。 [Water supply operation]
The water supply operation will be described with reference to FIG. The water supply operation is a process for generating the salt water 14 before the regeneration operation of the ion exchange resin 9. The control unit 13 switches the flow path in the control valve 3, and the raw water from the raw water inlet pipe 5 is passed through the control valve 3 to the salt water pipe 12, and supplied to the salt water tank 4 by a predetermined amount.
　本発明の軟水器を実際に運転させる手順を説明する。なお、以下の説明は本発明の好適な実施形態を示すものであって、本発明はこれらに限定されることなく、本発明の範囲内で他の実施形態でも実施ができる。 手 順 The procedure for actually operating the water softener of the present invention will be described. The following description shows preferred embodiments of the present invention, and the present invention is not limited to these embodiments, and other embodiments can be implemented within the scope of the present invention.
　＜実施形態１＞
　図７は、実施形態１における軟水器１での各種運転の実施タイミングを示すフローチャートである。軟水器１の制御部１３へ電気が供給された直後に、コントロールバルブ３が流路を切り替えてイオン交換樹脂９の逆洗浄運転、正洗浄運転および給水運転をこの順に行う（ステップＷ１）。以後、ステップＷ１の運転を洗浄給水運転と称する。洗浄給水運転では、イオン交換樹脂９に付着した異物を除去し、さらに配管内に残った塩水を排出するのに必要な分量の原水がイオン交換樹脂充填槽２に供給され、さらに塩水タンク４へも所定量の原水が供給される。 <First embodiment>
FIG. 7 is a flowchart showing the execution timing of various operations in the water softener 1 in the first embodiment. Immediately after electricity is supplied to the control unit 13 of the water softener 1, the control valve 3 switches the flow path to perform the reverse cleaning operation, the normal cleaning operation, and the water supply operation of the ion exchange resin 9 in this order (step W1). Hereinafter, the operation in step W1 is referred to as a washing water supply operation. In the washing and water supply operation, a sufficient amount of raw water necessary for removing foreign substances adhering to the ion exchange resin 9 and discharging the salt water remaining in the pipe is supplied to the ion exchange resin filling tank 2 and further to the salt water tank 4. Also, a predetermined amount of raw water is supplied.
　したがって、給水運転途中に停電が起こり、塩水タンク４内に塩水１４が供給されていない状態で放置されたとしても、その後停電から制御部１３へ電気が供給された直後に洗浄給水運転が行われるため、後に実施される再生運転で塩水が不足して再生不十分となることを防止できる。 Therefore, even if a power failure occurs during the water supply operation and the salt water 14 is not supplied in the salt water tank 4, the washing water supply operation is performed immediately after the power is supplied to the control unit 13 from the power failure. Therefore, it is possible to prevent insufficient regeneration due to a shortage of salt water in a regeneration operation performed later.
　洗浄給水運転が完了すると、制御部１３は、洗浄給水運転完了後からの経過時間を監視するタイマーＡのカウントと、洗浄給水運転完了後からの通水量の積算値を監視する積算量カウンターのカウントを開始する（ステップＳ１）。 When the washing water supply operation is completed, the control unit 13 counts the timer A for monitoring the elapsed time after the completion of the washing water supply operation, and counts the integrated amount counter for monitoring the integrated value of the amount of water flow after the completion of the washing water supply operation. Is started (step S1).
　本実施形態では、再生運転や洗浄運転を開始する時刻を設定時刻としている。本実施形態では再生運転や洗浄運転を、使用頻度が比較的少ない午前０時から午前６時の間、好ましくは午前３時に行うように設定されている。制御部１３は現在の時刻が設定時刻か否かを判断する(ステップＳ２)。現在の時刻が設定時刻になると(ステップＳ２の判断が「ＹＥＳ」)、ステップＳ３に進む。図７では設定時刻が午前３時に設定されている。 In the present embodiment, the time at which the regeneration operation or the cleaning operation starts is set as the set time. In the present embodiment, the regeneration operation and the cleaning operation are set to be performed between 0:00 am and 6:00 am, which is relatively infrequently used, preferably at 3:00 am. The control unit 13 determines whether the current time is a set time (step S2). When the current time reaches the set time (the determination in step S2 is “YES”), the process proceeds to step S3. In FIG. 7, the set time is set to 3:00 am
　なお、ステップＳ２の設定時刻は、軟水器の使用頻度などに応じて適宜変更できる。たとえば、夜間勤務等で午前３時の使用頻度が多い場合は、午後３時に再生運転や洗浄運転が行われるように設定することもできる。 設定 The time set in step S2 can be changed as appropriate according to the frequency of use of the water softener. For example, if the frequency of use at 3:00 am is high due to night work or the like, the regeneration operation or the washing operation can be performed at 3:00 pm.
　タイマーＡと積算量カウンターは、イオン交換樹脂９の再生運転を行うタイミングを決定する。本実施形態では再生運転を９日ごとまたは積算通水量１．９トンごとに行うように設定されている。制御部１３は、先ずタイマーＡのカウント値が９日未満であるか否かを判断する(ステップＳ３)。タイマーＡのカウントが９日未満であると（ステップＳ３が「ＹＥＳ」）、次に積算通水量のカウント値が１．９トン未満であるか否かを判断する（ステップＳ４）。 The timer A and the integrated amount counter determine the timing at which the regeneration operation of the ion exchange resin 9 is performed. In the present embodiment, the regeneration operation is set to be performed every 9 days or every 1.9 tons of accumulated water flow. The control unit 13 first determines whether or not the count value of the timer A is less than 9 days (Step S3). If the count of timer A is less than 9 days ("YES" in step S3), it is then determined whether the count value of the integrated water flow is less than 1.9 tons (step S4).
　ステップＳ４の設定積算量は、被処理水の硬度に応じて適宜変更できる。例えば、被処理水の硬度が高い場合は被処理水の処理量が少なくなるため、１．５トンごとなど短い間隔で再生運転が行われるように設定することもできる。 設定 The set integration amount in step S4 can be appropriately changed according to the hardness of the water to be treated. For example, when the hardness of the water to be treated is high, the amount of the water to be treated is small, so that the regeneration operation can be set to be performed at short intervals such as every 1.5 tons.
　制御部１３は、タイマーＡのカウントが９日以上になると（ステップＳ３の判断が「ＮＯ」）、コントロールバルブ３の流路を切り替えて、イオン交換樹脂９の再生運転を行う（ステップＳ６）。本実施形態では、再生運転の前に先ず逆洗浄運転を行い、再生運転の後に正洗浄運転と給水運転をこの順に行う。この逆洗浄運転、再生運転、正洗浄運転および給水運転をこの順に行う一連の運転を洗浄再生給水運転と称する。そしてイオン交換樹脂９の洗浄再生給水運転が完了すると、制御部１３はタイマーＡのカウントおよび積算量カウンターのカウントをリセットする(ステップＳ７)。タイマーＡと積算量カウンターは再びカウントを開始し（ステップＳ１）、イオン交換樹脂９の再生運転後の経過時間や積算通水量を測定する。 (4) When the count of the timer A reaches 9 days or more (the determination in step S3 is “NO”), the control unit 13 switches the flow path of the control valve 3 and performs the regeneration operation of the ion exchange resin 9 (step S6). In the present embodiment, first, the reverse cleaning operation is performed before the regeneration operation, and the normal cleaning operation and the water supply operation are performed in this order after the regeneration operation. A series of operations in which the reverse cleaning operation, the regeneration operation, the normal cleaning operation, and the water supply operation are performed in this order are referred to as a cleaning regeneration water supply operation. Then, when the washing and regeneration water supply operation of the ion exchange resin 9 is completed, the control unit 13 resets the count of the timer A and the count of the integrated amount counter (Step S7). The timer A and the accumulated amount counter start counting again (step S1), and the elapsed time after the regeneration operation of the ion exchange resin 9 and the accumulated water flow amount are measured.
　また、制御部１３は、タイマーＡのカウントが９日未満であっても（ステップＳ３の判断が「ＹＥＳ」）、積算通水量が１．９トン以上になると（ステップＳ４の判断が「ＮＯ」）、上述と同様に、コントロールバルブ３の流路を切り替えて、イオン交換樹脂９の洗浄再生給水運転を行う（ステップＳ６）。 Further, even if the count of the timer A is less than 9 days (the determination in step S3 is “YES”), the control unit 13 determines that the accumulated water flow is 1.9 tons or more (the determination in step S4 is “NO”). In the same manner as described above, the flow path of the control valve 3 is switched to perform the washing / regenerating water supply operation of the ion exchange resin 9 (step S6).
　一方、経過日数が９日未満で（ステップＳ３の判断が「ＹＥＳ」）、積算通水量が１．９トン未満であり(ステップＳ４の判断が「ＹＥＳ」)、なおかつ軟水器１に通水が無い場合には、イオン交換樹脂充填槽２内の被処理水がイオン交換樹脂充填槽２内に滞留した状態となる。この状態が長く続くとイオン交換樹脂９から浸出する有機物等によって被処理水が着色されてしまうので、イオン交換樹脂充填槽２内を洗浄する必要がある。そのため、本実施形態の軟水器１では、経過日数が９日未満で（ステップＳ３の判断が「ＹＥＳ」）、積算通水量が１．９トン未満であっても(ステップＳ４の判断が「ＹＥＳ」)、設定時刻になると、イオン交換樹脂充填槽２内の洗浄運転（逆洗浄運転と正洗浄運転）を行う。洗浄運転を所定時間行うことで、イオン交換樹脂９に付着した異物が除去され、さらに配管内に残った塩水を排出するのに必要な分量の原水がイオン交換樹脂充填槽２に供給される。 On the other hand, the elapsed days are less than 9 days (judgment in step S3 is "YES"), the accumulated water flow is less than 1.9 tons (judgment in step S4 is "YES"), and the water is passed through the water softener 1. When there is no water, the water to be treated in the ion exchange resin filling tank 2 is in a state of staying in the ion exchange resin filling tank 2. If this state continues for a long time, the water to be treated will be colored by organic substances leached from the ion exchange resin 9 and the like, and it is necessary to clean the inside of the ion exchange resin filling tank 2. Therefore, in the water softener 1 of the present embodiment, even if the elapsed days are less than 9 days (the determination in step S3 is “YES”), and the accumulated water flow is less than 1.9 tons (the determination in step S4 is “YES”). )), At the set time, the washing operation (reverse washing operation and normal washing operation) in the ion exchange resin filling tank 2 is performed. By performing the washing operation for a predetermined time, the foreign substances adhering to the ion exchange resin 9 are removed, and raw water in an amount necessary to discharge the salt water remaining in the pipe is supplied to the ion exchange resin filling tank 2.
　本実施形態１では、再生途中に停電があり、イオン交換樹脂充填槽２に塩水が残った場合であっても、制御部１３へ電気が供給された直後に洗浄運転が行なわれるため、イオン交換樹脂充填槽２内の塩水が軟水出口管６から流出することを防止できる。さらに、制御部１３へ電気が供給された直後に給水運転が行われるため、次回再生運転で塩水１４が不足して再生不十分となることを防止できる。 In the first embodiment, even if a power failure occurs during regeneration and salt water remains in the ion-exchange resin filling tank 2, the cleaning operation is performed immediately after power is supplied to the control unit 13. It is possible to prevent the salt water in the resin filling tank 2 from flowing out of the soft water outlet pipe 6. Furthermore, since the water supply operation is performed immediately after the electricity is supplied to the control unit 13, it is possible to prevent the salt water 14 from being insufficient in the next regeneration operation and insufficient regeneration.
　＜参考実施形態１＞
　軟水器１の運転の参考例として、参考実施形態１を説明する。図８は、参考実施形態１の実施タイミングを示すフローチャートである。この参考実施形態１と上述した実施形態１との違いは、参考実施形態１では洗浄給水運転を行う前に、総通水量の値によって洗浄給水運転を行うかどうかを判断する処理が追加されている。この追加された処理以外は、実施形態１と共通するので、共通する部分には同一の符号を付して説明を省略する。 <Reference Embodiment 1>
Reference Embodiment 1 will be described as a reference example of the operation of the water softener 1. FIG. 8 is a flowchart showing the implementation timing of the first embodiment. The difference between the first embodiment and the above-described first embodiment is that, in the first embodiment, a process of determining whether or not to perform the cleaning and water supply operation based on the value of the total flow rate before performing the cleaning and water supply operation is added. I have. Except for the added processing, the third embodiment is the same as the first embodiment, and thus the common parts are denoted by the same reference numerals and the description thereof is omitted.
　図８に示すように、参考実施形態１では、軟水器１の制御部１３へ電気が供給された直後に、制御部１３は通水量の積算値を監視する総通水量カウンターのカウントを開始する（ステップＷ１）。 As shown in FIG. 8, in the first embodiment, immediately after electricity is supplied to the control unit 13 of the water softener 1, the control unit 13 starts counting of the total water flow counter that monitors the integrated value of the water flow. (Step W1).
　この総通水量カウンターは、軟水器１に通水される水の量をリセットされることなく積算し続けており、洗浄給水運転を行うタイミングを決定する。参考実施形態１では、軟水器１を一般家庭に施工した直後に実施する洗浄運転において使用する水量を想定して、総通水量を１００Ｌ以上に設定している。制御部１３は、総通水量のカウント値が１００Ｌ以上か否かを判断する（ステップＷ２）。総通水量のカウンターが１００Ｌ未満であると（ステップＷ２の判断が「ＮＯ」）、ステップＷ３を飛ばして、ステップＳ１に進む。総通水量のカウンターが１００Ｌ以上であると（ステップＷ２の判断が「ＹＥＳ」)、ステップＷ３に進み、次いでステップＳ１に進む。ステップＷ３では、コントロールバルブ３が流路を切り替えて、洗浄給水運転が実施される。このように、制御部１３へ電気が供給された直後に通水量の積算値に応じて、ステップＷ３の洗浄給水運転を実施するか否かを選択する理由は次のとおりである。 総 The total water flow counter continues to accumulate the amount of water flowing through the water softener 1 without being reset, and determines the timing for performing the cleaning water supply operation. In the first embodiment, the total water flow is set to 100 L or more, assuming the amount of water to be used in the washing operation performed immediately after the water softener 1 is installed in a general household. The control unit 13 determines whether the count value of the total water flow is 100 L or more (step W2). If the total water flow counter is less than 100 L (the determination in step W2 is “NO”), the process skips step W3 and proceeds to step S1. If the total water flow counter is 100 L or more (the determination in step W2 is “YES”), the process proceeds to step W3, and then proceeds to step S1. In step W3, the control valve 3 switches the flow path, and the cleaning water supply operation is performed. As described above, the reason for selecting whether or not to perform the washing and water supply operation in step W3 according to the integrated value of the water flow immediately after the electricity is supplied to the control unit 13 is as follows.
　先ず軟水器１が一般家庭に施工される前の軟水器１が組み立てられている組立ラインでは、電気を供給しての通電検査が行われる。この通電検査を行っている間に洗浄給水運転が実施されると、洗浄給水運転が完了するまでの間に通電検査を待機しなければならず、検査の効率が悪くなる。そこで、総通水量カウンターで積算されている通水量を見て、軟水器１が一般家庭に施工される前の総通水量が少ない間は、洗浄給水運転を行わないようにして、通電検査を効率よく進められるようにしている。 (1) First, in an assembly line where the water softener 1 is assembled before the water softener 1 is installed in a general home, an electricity supply test is performed by supplying electricity. If the cleaning / water supply operation is performed while the power supply inspection is being performed, the power supply inspection must be waited until the cleaning / water supply operation is completed, and the efficiency of the inspection deteriorates. Therefore, by observing the flow rate accumulated in the total flow rate counter, while the total flow rate before the water softener 1 is installed in the general home is small, the cleaning water supply operation is not performed, and the power supply inspection is performed. We are trying to proceed efficiently.
　一方、軟水器１が一般家庭に施工されて、使用者によって使用が開始された後は、制御部１３に電気が供給された直後に洗浄給水運転が実施される必要がある。そこで、一般家庭に施工された直後に実施される洗浄運転により使用される水量を目安にして、総通水量がその目安値以上になっていれば、制御部１３に電気が供給された直後に洗浄給水運転を実施するようにしている。本参考形態１では、この目安量を１００Ｌに設定している。こうしておけば、施工直後に実施される洗浄運転が完了し、使用者によって使用が開始された後は、制御部１３に電気が供給された直後に洗浄給水運転が実施される。 On the other hand, after the water softener 1 is installed in a general household and started to be used by a user, it is necessary to perform the washing and water supply operation immediately after the controller 13 is supplied with electricity. Therefore, using the amount of water used in the washing operation performed immediately after being installed in a general home as a guide, if the total water flow is equal to or more than the guide value, immediately after the control unit 13 is supplied with electricity. The cleaning water supply operation is performed. In the first embodiment, the reference amount is set to 100 L. By doing so, the cleaning operation performed immediately after the installation is completed, and after the user starts using the cleaning operation, the cleaning water supply operation is performed immediately after the control unit 13 is supplied with electricity.
　なお、ステップＷ２の総通水量は、軟水器１の施工直後に実施する洗浄運転の通水量などに応じて適宜変更できる。例えば、イオン交換樹脂充填槽２内のイオン交換樹脂９の量が少ないなどにより、洗浄運転の通水量が少なくてよい場合は、総通水量を５０Ｌに設定することもできる。 Note that the total water flow rate in step W2 can be appropriately changed according to the water flow rate of the washing operation performed immediately after the construction of the water softener 1. For example, if the amount of water flow in the washing operation is small due to a small amount of the ion exchange resin 9 in the ion exchange resin filling tank 2, the total water flow can be set to 50 L.
　＜実施形態２＞
　図９は、実施形態２における軟水器１での各種運転の実施タイミングを示すフローチャートである。なお、実施形態１のフローチャートと内容が共通する部分については説明を省略する。 <Embodiment 2>
FIG. 9 is a flowchart showing the execution timing of various operations in the water softener 1 in the second embodiment. Note that the description of portions having the same contents as the flowchart of the first embodiment will be omitted.
　軟水器１の制御部１３へ電気が供給された直後に、制御部１３は、洗浄給水運転完了後からの経過時間を監視するタイマーＡのカウントと、洗浄給水運転完了後からの通水量の積算値を監視する積算量カウンターのカウントを開始する（ステップＳ１）。ステップＳ２は、実施形態１と同様である。なお、曜日毎に使用頻度が異なるのであれば、曜日毎に設定時刻を変えることもできる。例えば、月曜日は午前４時、火曜日は午前５時といったように設定することもできる。これ以降の各ステップについては実施形態１と同様である。 Immediately after the electricity is supplied to the control unit 13 of the water softener 1, the control unit 13 counts the timer A that monitors the elapsed time after the completion of the cleaning water supply operation, and integrates the water flow amount after the completion of the cleaning water supply operation. The counting of the integrated amount counter for monitoring the value is started (step S1). Step S2 is the same as in the first embodiment. If the frequency of use differs for each day of the week, the set time can be changed for each day of the week. For example, it can be set to 4:00 am on Monday, 5:00 am on Tuesday, and so on. The subsequent steps are the same as in the first embodiment.
　本実施形態２では上記のように動作するので、毎日設定時刻になると(ステップＳ２の判断が「ＹＥＳ」) 、ステップＳ５またはステップＳ６に進み、逆洗浄運転と正洗浄運転、すなわち洗浄運転が行われる。 In the second embodiment, since the operation is performed as described above, when the set time is reached every day (the determination in step S2 is “YES”), the process proceeds to step S5 or step S6, and the reverse cleaning operation and the normal cleaning operation, that is, the cleaning operation Will be
　＜水質の測定＞
　２４時間毎に洗浄運転を行うことで十分かどうかを確認するために、イオン交換樹脂充填槽２内の滞留水の水質を測定した。測定する水質の項目は、濁度、色度、および化学的酸素要求量とした。濁度および色度は、日本電色工業株式会社製ＷＡＴＥＲ　ＡＮＡＬＹＺＥＲ　ＷＡ６０００を用いて測定した。化学的酸素要求量（以下、ＣＯＤ）は、ＪＩＳ　Ｋ　０１０２－１７　滴定法に従い、ＣＯＤＭｎの値を滴定によって測定した。 <Measurement of water quality>
The quality of the stagnant water in the ion-exchange resin-filled tank 2 was measured in order to confirm whether washing operation every 24 hours was sufficient. The items of water quality to be measured were turbidity, chromaticity, and chemical oxygen demand. Turbidity and chromaticity were measured using WATER ANALYZER WA6000 manufactured by Nippon Denshoku Industries Co., Ltd. Chemical oxygen demand (hereinafter referred to as COD) was determined by titration of CODMn according to JIS K 0102-17 titration method.
　原水をｐＨ７．５±０．５のＲＯ水とし、イオン交換樹脂充填槽２にＲＯ水を満たし、塩水タンク４に塩水１４を満たした。次いで上記実施形態２での洗浄再生給水運転を１サイクルとして、これを２サイクル行った。その後、原水入口管２から２ＬのＲＯ水をイオン交換樹脂充填槽２へ流し、軟水出口管６から出てきた水を採水した。この水を浸漬液原水とし、浸漬液原水の水質を測定した。 Raw water was RO water having a pH of 7.5 ± 0.5, the ion exchange resin filling tank 2 was filled with RO water, and the salt water tank 4 was filled with salt water 14. Next, the washing / regeneration water supply operation in the second embodiment was defined as one cycle, and two cycles were performed. Thereafter, 2 L of RO water was flowed from the raw water inlet pipe 2 into the ion exchange resin filling tank 2, and water coming out of the soft water outlet pipe 6 was sampled. This water was used as the immersion liquid raw water, and the quality of the immersion liquid raw water was measured.
　なお、色度、濁度およびＣＯＤＭｎの増加量については、国毎に基準が異なっており、例えば、色度の増加量は５．０度以下、濁度の増加量は０．５度以下、ＣＯＤＭｎの増加量は２．０ｍｇ／Ｌ以下を基準としている国もある。 The standards for the amounts of increase in chromaticity, turbidity, and CODMn differ from country to country. For example, the amount of increase in chromaticity is 5.0 degrees or less, the amount of increase in turbidity is 0.5 degrees or less, In some countries, the increase in CODMn is based on 2.0 mg / L or less.
　(実験１)
　洗浄再生給水運転を２サイクル行い、そのまま２４時間放置した。２４時間後に、イオン交換樹脂充填槽２内の滞留水を採水するために、原水入口管２から２ＬのＲＯ水をイオン交換樹脂充填槽２へ流した後、軟水出口管６から出てきた水を採水した。この水の水質を測定し、２４時間後の水の水質と浸漬液原水の水質とを対比して、色度、濁度、およびＣＯＤＭｎの増加量を測定した。色度、濁度、ＣＯＤＭｎの増加量はいずれも非常に小さい値であった。色度、濁度、ＣＯＤＭｎの増加量を表１にまとめた。上記の基準を満たしていた。 (Experiment 1)
The washing / regeneration water supply operation was performed for two cycles, and left for 24 hours. Twenty-four hours later, 2 L of RO water was flowed from the raw water inlet pipe 2 to the ion-exchange resin filling tank 2 and then came out of the soft water outlet pipe 6 in order to collect the water retained in the ion-exchange resin filling tank 2. Water was sampled. The water quality of this water was measured, and the chromaticity, turbidity, and increase in CODMn were measured by comparing the water quality after 24 hours with the quality of the immersion liquid raw water. The increase in chromaticity, turbidity, and CODMn were all very small values. Table 1 summarizes the increase in chromaticity, turbidity, and CODMn. The above criteria were met.
　(実験２)
　７２時間放置した以外は、実験１と同様にして、色度、濁度、およびＣＯＤＭｎの増加量を測定した。色度、濁度、ＣＯＤＭｎの増加量は、いずれも２４時間後の結果を上回っていた。色度、濁度、ＣＯＤＭｎの増加量を表１にまとめた。上記の基準を満たしていなかった。
Figure JPOXMLDOC01-appb-T000001
 (Experiment 2)
Except for leaving for 72 hours, the chromaticity, turbidity, and increase in CODMn were measured in the same manner as in Experiment 1. The increase in chromaticity, turbidity, and CODMn all exceeded the results after 24 hours. Table 1 summarizes the increase in chromaticity, turbidity, and CODMn. Did not meet the above criteria.
Figure JPOXMLDOC01-appb-T000001
　本発明を詳細にまた特定の実施態様を参照して説明したが、本発明の精神と範囲を逸脱することなく様々な変更や修正を加えることができることは当業者にとって明らかである。 Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
　本出願は、２０１８年９月６日出願の日本特許出願（特願２０１８－１６６６５６）、２０１８年９月１２日出願の日本特許出願（特願２０１８－１７０３９９）に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on a Japanese patent application filed on September 6, 2018 (Japanese Patent Application No. 2018-166656) and a Japanese patent application filed on September 12, 2018 (Japanese Patent Application No. 2018-170399). Here incorporated by reference.
　本発明によれば、毎日所定の時刻にイオン交換樹脂充填槽内の洗浄運転を実施するように設定できるので、洗浄運転中に通水を行なうと原水入口管から流れる被処理水が軟水出口管へ流出してしまうが、所定の時刻を通水を行わない時間帯に設定することで、このような不具合を防止できる軟水器を提供できるという効果を奏する。この効果を奏する本発明は、イオン交換樹脂が充填されたイオン交換樹脂充填槽に被処理水を通水させて軟水化処理を行う軟水器に関して有用である。 According to the present invention, since the washing operation in the ion-exchange resin filling tank can be set to be performed at a predetermined time every day, if water is supplied during the washing operation, the water to be treated flowing from the raw water inlet pipe is softened to the soft water outlet pipe. However, by setting the predetermined time to a time zone in which water is not passed, it is possible to provide a water softener that can prevent such a problem. The present invention having this effect is useful for a water softener that performs water softening treatment by allowing water to be treated to flow through an ion exchange resin filled tank filled with an ion exchange resin.
１　軟水器
２　イオン交換樹脂充填槽
３　コントロールバルブ
４　塩水タンク
５　原水入口管
６　軟水出口管
７　排水出口管
８　集水管
９　イオン交換樹脂
１０　上部フィルタ
１１　下部フィルタ
１２　塩水管
１３　制御部
１４　塩水 DESCRIPTION OF SYMBOLS 1 Water softener 2 Ion exchange resin filling tank 3 Control valve 4 Salt water tank 5 Raw water inlet pipe 6 Soft water outlet pipe 7 Drain outlet pipe 8 Water collecting pipe 9 Ion exchange resin 10 Upper filter 11 Lower filter 12 Salt water pipe 13 Control part 14 Salt water

Claims (4)

  1. 　イオン交換樹脂に被処理水を通水させて軟水化処理を行う軟水器であって、
    　イオン交換樹脂が充填されたイオン交換樹脂充填槽と、
    　イオン交換樹脂を再生するための塩水を貯めるための塩水タンクと、
    　前記イオン交換樹脂充填槽内の前記イオン交換樹脂に被処理水を通水させて軟水化する軟水化運転、前記イオン交換樹脂充填槽の内部を洗浄する洗浄運転、前記塩水タンク内の前記塩水を前記イオン交換樹脂充填槽内の前記イオン交換樹脂に通水させてイオン交換樹脂を再生する再生運転、および前記塩水タンクの内部に水を供給する給水運転を切り替える制御部と、を備え、
    　前記制御部が、所定の時刻に前記洗浄運転が行なわれるように制御する、軟水器。     A water softener for performing water softening treatment by allowing water to be treated to pass through an ion exchange resin,
    An ion exchange resin filling tank filled with ion exchange resin,
    A salt water tank for storing salt water for regenerating the ion exchange resin,
    A water softening operation in which water to be treated is passed through the ion exchange resin in the ion exchange resin filling tank to soften the water, a cleaning operation in which the inside of the ion exchange resin filling tank is washed, and the salt water in the salt water tank. A regeneration unit for causing the ion exchange resin in the ion exchange resin filling tank to pass through the ion exchange resin to regenerate the ion exchange resin, and a control unit for switching a water supply operation for supplying water to the inside of the salt water tank,
    A water softener, wherein the control unit controls the cleaning operation to be performed at a predetermined time.
  2. 　前記所定の時刻が、午前０時から午前６時の間である、請求項１の軟水器。 軟 The water softener according to claim 1, wherein the predetermined time is between midnight and 6:00 am.
  3. 　前記所定の時刻が毎日同じ時刻である、請求項１または２の軟水器。 The water softener according to claim 1 or 2, wherein the predetermined time is the same every day.
  4. 　イオン交換樹脂に被処理水を通水させて軟水化処理を行う軟水器であって、
    　イオン交換樹脂が充填されたイオン交換樹脂充填槽と、
    　イオン交換樹脂を再生するための塩水を貯めるための塩水タンクと、
    　前記イオン交換樹脂充填槽内の前記イオン交換樹脂に被処理水を通水させて軟水化する軟水化運転、前記イオン交換樹脂充填槽の内部を洗浄する洗浄運転、前記塩水タンク内の前記塩水を前記イオン交換樹脂充填槽内の前記イオン交換樹脂に通水させてイオン交換樹脂を再生する再生運転、および前記塩水タンクの内部に水を供給する給水運転を切り替える制御部と、を備え、
    　前記制御部が、当該制御部へ電気が供給された直後に、前記洗浄運転および前記給水運転が行われるように制御する、軟水器。     A water softener for performing water softening treatment by allowing water to be treated to pass through an ion exchange resin,
    An ion exchange resin filling tank filled with ion exchange resin,
    A salt water tank for storing salt water for regenerating the ion exchange resin,
    A water softening operation in which water to be treated is passed through the ion exchange resin in the ion exchange resin filling tank to soften the water, a cleaning operation in which the inside of the ion exchange resin filling tank is washed, and the salt water in the salt water tank. A regeneration unit for causing the ion exchange resin in the ion exchange resin filling tank to pass through the ion exchange resin to regenerate the ion exchange resin, and a control unit for switching a water supply operation for supplying water to the inside of the salt water tank,
    A water softener, wherein the control unit controls the washing operation and the water supply operation to be performed immediately after electricity is supplied to the control unit.
PCT/JP2019/035084 2018-09-06 2019-09-05 Water softener WO2020050381A1 (en)

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