JP2018103128A - Counter incorporating purified water producing device and maintenance method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a counter incorporating a purified water producing device and a maintenance method of the same which can suppress contamination in the purified water producing device and a purified water supplying line, which requires less labor of work for suppressing contamination, and in which conveying the purified water producing device is unnecessary for the work for suppressing contamination.SOLUTION: The counter 1 incorporating the purified water producing device comprises: a housing counter 2; the purified water producing device 10 housed inside a housing space of the housing counter 2; the purified water supplying line 102; a waste water line for discharging waster water outside (a first purified water returning line 110, a waste water line for the device 36, a first waste water introducing line 106, a main waste water line 104); and a bypass line 114. A first end portion of the purified water supplying line 102 is connected with a purified water outlet 22 of the purified water producing device 10, and a second end portion of the purified water supplying line 102 is disposed to be connectable with another line at the outside of the housing counter 2. The bypass line 114 is detachably connected with the second end portion of the purified water supplying line 102, and directly supplies the purified water that passes through the purified water supplying line 102 to the waste water line.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a counter with built-in purified water production apparatus and a maintenance method thereof.

In dialysis treatment, a dialysis system including a purified water production apparatus that produces purified water and a dialysis apparatus that prepares a dialysis solution from purified water and a dialysis base material and performs dialysis using the dialysis solution is used ( For example, see Patent Document 1).
As a dialysis system, there is known a dialysis system in which a small personal purified water production apparatus and a small personal dialysis apparatus, which are transported to a hospital room or a treatment room at the time of use, are connected by a purified water supply line.

Japanese Patent No. 5425527

  The personal purified water production apparatus is transported to a dedicated storage room when not in use and stored there. Therefore, it takes time and effort to reciprocate the personal purified water production apparatus between the room dedicated for storage and the hospital room or treatment room.

  In addition, since the purified water manufacturing apparatus for personal use is stored in a state where purified water stays in the purified water manufacturing apparatus for personal use and the purified water supply line, the stored water is easily contaminated by bacteria and endotoxin. Therefore, when storing the personal purified water production apparatus, it is necessary to replace the purified water in the personal purified water production apparatus and the purified water supply line with a formalin solution. However, when using a personal purified water production apparatus, it is necessary to discharge formalin liquid from the personal purified water production apparatus and the purified water supply line, and to perform rinsing to completely remove the remaining formalin. . Thus, it takes time and effort to supplement the personal purified water production apparatus and the purified water supply line so that the personal purified water production apparatus and the purified water supply line are not contaminated by bacteria and endotoxin.

  As a method of suppressing contamination of personal purified water production equipment and purified water supply line during storage without using formalin solution, the purified water supply line is regularly connected manually to an external drainage line. Purified water is produced by a water production device, and after the purified water that has passed through the purified water supply line is discharged to the drainage line, the purified water supply line and the external drainage line are manually removed to manually remove the purified water for personal use. A method for preventing a long-time stay of purified water in the production apparatus and the purified water supply line can be considered. However, in order to sufficiently suppress the contamination by stagnant water bacteria and endotoxin, it is necessary to repeat the above operation frequently, which is very troublesome. Moreover, since it is a work by a procedure, there is a possibility that bacteria are mixed from the outside into the personal purified water production apparatus and the purified water supply line, and the personal purified water production apparatus and the purified water supply line are contaminated.

  The present invention can suppress the contamination of the purified water production apparatus and the purified water supply line, does not require work for suppressing the contamination, and transports the purified water production apparatus for the operation for suppressing the contamination. Provided a counter with a built-in purified water production apparatus that is not necessary and a maintenance method thereof.

The present invention has the following aspects.
<1> a storage counter having a storage space inside; a purified water production apparatus stored in the storage space of the storage counter; a first end connected to a purified water outlet of the purified water production apparatus; And a purified water supply line arranged to be connectable to other lines outside the storage counter; a drainage line for discharging wastewater to the outside; and a detachable attachment to the second end of the purified water supply line And a bypass line for supplying purified water that has passed through the purified water supply line directly to the drainage line.
<2> The counter with a built-in purified water production apparatus according to <1>, wherein a sample port through which a part of the purified water flowing through the bypass line can be extracted is provided in the middle of the bypass line.
<3> The counter with built-in purified water production apparatus according to <1> or <2>, further comprising control means for controlling the start and stop of water supply of the purified water from the purified water production apparatus to the drainage line.
<4> The purification according to any one of <1> to <3>, further comprising any one or both of a heating unit for heating the purified water and a chemical solution stock adding unit for adding a chemical solution stock solution to the purified water. Counter with built-in water production equipment.
<5> The counter with built-in purified water production apparatus according to <4>, further comprising a control unit that controls either one or both of driving of the heating unit and driving of the chemical solution addition unit.
<6> A maintenance method for a counter with built-in purified water production apparatus according to any one of <1> to <5>; periodically purified water is produced by the purified water production apparatus, and the purified water is used as the purified water. A maintenance method for a counter with a built-in purified water production apparatus that supplies water to the drainage line via a supply line and the bypass line.

The counter with built-in purified water production apparatus of the present invention can suppress the contamination of the purified water production apparatus and the purified water supply line, so that the work for suppressing the contamination is not required, and the work for suppressing the contamination is performed. There is no need to transport purified water production equipment.
According to the method for maintaining a built-in purified water production apparatus counter of the present invention, the contamination of the purified water production apparatus and the purified water supply line can be suppressed, and the work for suppressing the contamination is not required and the contamination is suppressed. There is no need to transport the purified water production apparatus for this work.

It is a schematic block diagram which shows an example of the counter with a purified water manufacturing apparatus of this invention. It is a schematic block diagram which shows a mode that the personal dialysis apparatus was connected to the counter built in the purified water manufacturing apparatus of FIG. It is a schematic block diagram which shows the other example of the counter with a purified water manufacturing apparatus of this invention. It is a schematic block diagram which shows a mode that the personal dialysis apparatus was connected to the counter built in the purified water manufacturing apparatus of FIG.

<< First Embodiment >>
<Counter with built-in purified water production equipment>
FIG. 1 is a schematic configuration diagram showing a first embodiment of a purified water producing apparatus built-in counter according to the present invention.
The counter 1 with a built-in purified water production apparatus includes: a storage counter 2 having a storage space therein; a purified water manufacturing apparatus 10 that manufactures purified water stored in the storage space of the storage counter 2; And a water supply line 100 having a second end connected to the raw water inlet 20 of the purified water production apparatus 10; a first end connected to the purified water outlet 22 of the purified water production apparatus 10; The purified water supply line 102 is arranged so that the end of 2 can be connected to other external lines in front of the storage counter 2; the purified water production apparatus built-in counter 1 and the waste water generated by the personal dialysis apparatus described later A main drainage line 104 (drainage line) for discharging to the outside; a first end connected to the drainage outlet 26 of the purified water production apparatus 10 and a second end joined to the main drainage line 104; Drainage introduction line 06 (drainage line); a second drainage introduction line in which the first end is disposed in front of the storage counter 2 so as to be connectable to other external lines, and the second end joins the main drainage line 104 108 (drainage line); a first end is disposed on the front face of the storage counter 2 so as to be connectable to other external lines, and a second end is the first purified water inlet 24 of the purified water production apparatus 10. A first purified water return line 110 (drainage line) for returning purified water from the outside of the storage counter 2 to the purified water production apparatus 10; a first end of the purified water supply line 102 The purified water that has been detachably connected to the end of the first and the second end is detachably connected to the first end of the first purified water return line 110 and has passed through the purified water supply line 102 will be described later. Without going through a personal dialysis machine, return to the purified water return line 110 And a bypass line 114 to contact water.

The counter 1 with a built-in purified water production apparatus further includes a check valve 126 provided in the middle of the first purified water return line 110.
The counter 1 with a built-in purified water production apparatus is further connected to the purified water production apparatus 10 and is electrically connected to a control device 80 (control means) for controlling the purified water production apparatus 10; an input device and a display device of the control device 80 And a display touch panel 82 that is attached to the front of the storage counter 2 and is electrically connected to the control device 80.

  The counter 1 with built-in purified water production apparatus further includes an ultrafiltration membrane filter 90 provided in the middle of the purified water supply line 102. The ultrafiltration membrane filter 90 is provided for removing bacteria and endotoxin in the purified water supply line 102.

(Storage counter)
The storage counter 2 is a facility provided in a hospital room, a treatment room, and the like, and is used as storage of medical equipment, watering in a hospital room, a treatment room, etc.
The storage counter 2 has a storage space for storing the purified water production apparatus 10 therein.
The storage counter 2 is provided with piping for water circulation.

(Purified water production equipment)
The purified water production apparatus 10 includes an activated carbon filter 12 containing activated carbon that removes residual chlorine in raw water supplied from a water supply or the like via a water supply line 100; and filtered raw water filtered with activated carbon through a reverse osmosis membrane. And a reverse osmosis membrane module 14 for obtaining purified water.

  The purified water production apparatus 10 further includes a raw water supply line 30 having a first end connected to the water supply line 100 at the raw water inlet 20 and a second end connected to the activated carbon filter 12; Raw water transfer line 32 connected to the activated carbon filter 12 and having a second end connected to the reverse osmosis membrane module 14; a first end connected to the reverse osmosis membrane module 14 and a second end connected to purified water A purified water transfer line 34 connected to the purified water supply line 102 at the outlet 22; a first end connected to the first purified water return line 110 at the first purified water inlet 24, and a second end A device drain line 36 (drainage line) connected to the first drainage introduction line 106 at the drainage outlet 26 for returning to the purified water production apparatus 10 or discharging the wastewater generated in the purified water production apparatus 10 to the outside of the apparatus. And the first end is a reverse osmosis membrane module A concentrated water discharge line 38 having a second end connected to the apparatus drain line 36; a first end branching from the middle of the concentrated water discharge line 38, and a second end And a concentrated water return line 40 that joins the raw water transfer line 32.

The purified water production apparatus 10 is further provided with an electromagnetic valve 50 that is provided in the middle of the raw water transfer line 32 upstream of the location where the concentrated water return line 40 joins, and opens and closes the raw water transfer line 32; 40 and a check valve 52 provided in the middle of 40.
The purified water production apparatus 10 further includes a pressurizing pump 60 provided in the middle of the raw water transfer line 32 on the downstream side of the location where the concentrated water return line 40 joins.

The purified water production apparatus 10 further includes a water quality sensor 70 and a flow rate sensor 72 provided in the middle of the purified water transfer line 34.
A controller 80 that performs these controls is electrically connected to the electromagnetic valve 50, the pressurizing pump 60, the water quality sensor 70, the flow rate sensor 72, and the like.

  The reverse osmosis membrane module 14 may be a reverse osmosis membrane module that is usually used in a purified water production apparatus, and is not particularly limited. Examples of the reverse osmosis membrane module include a spiral type reverse osmosis membrane module described in Japanese Patent No. 4990710. The spiral type reverse osmosis membrane module is a cylindrical reverse osmosis membrane element that has a reverse osmosis membrane wound around a water collection pipe and is housed in a cylindrical casing. The raw water introduced from the raw water inlet is reverse osmosis. It is separated into purified water that permeates the membrane and concentrated water that does not permeate the reverse osmosis membrane. As the reverse osmosis membrane (RO membrane), a reverse osmosis membrane usually used in a purified water production apparatus may be used and is not particularly limited. Examples of the material of the reverse osmosis membrane include polyamide, polysulfone, cellulose acetate, polyacrylonitrile and the like.

  The high-pressure pump used for the pressurizing pump 60 may be any one that is usually used in a purified water production apparatus, and is not particularly limited. Examples of the high pressure pump include a multistage centrifugal pump and a plunger pump.

(Purified water supply line)
The purified water supply line 102 is a line for supplying the purified water produced by the purified water production apparatus 10 to a personal dialysis apparatus, which will be described later, outside the storage counter 2. When there is no need to supply purified water to the personal dialysis machine, the first end of the bypass line 114 is detachably connected to the second end of the purified water supply line 102.
At the second end of the purified water supply line 102, a connector for detachably connecting a water conduit, a bypass line 114, and the like included in the personal dialyzer is provided.

(Drainage line)
The first purified water return line 110, the apparatus drain line 36, the first drain introduction line 106, and the main drain line 104 are drain lines for discharging the waste water generated in the purified water production apparatus built-in counter 1 to the outside. It is.
The second drainage introduction line 108 and the main drainage line 104 are drainage lines for discharging wastewater generated by a personal dialysis machine described later to the outside.

  The end of the drainage pipe of the personal dialysis machine is detachably connected to the first end of the second drainage introduction line 108. When it is not necessary to supply purified water to the personal dialysis machine, the first end of the second drainage introduction line 108 need not be connected to the end of the drainage pipe of the personal dialysis machine. . At the first end of the second drainage introduction line 108, a connector for detachably connecting a drainage pipe or the like included in the personal dialyzer is provided.

  The main drainage line 104 is disposed inside or outside the ceiling, floor, wall, storage counter 2 or the like of the facility, and at least the first end of the first drainage introduction line 106 and the second drainage introduction line 108 are arranged. A first end is disposed on the storage counter 2.

  The waste water generated by the counter 1 and the personal dialyzer built in the purified water production apparatus includes concentrated water discharged from the reverse osmosis membrane module 14; wastewater that is no longer needed after being used in the personal dialyzer; Examples include the stagnant water in which the purified water stays contaminated in the line 34, the purified water supply line 102, the bypass line 114, the first purified water return line 110, and the like.

(Purified water return line)
The first purified water return line 110 is a line for returning purified water to the purified water production apparatus 10 from the outside of the storage counter 2.
The purified water returned to the purified water production apparatus 10 through the first purified water return line 110 is discharged to the outside via the apparatus drain line 36, the first drain introduction line 106, and the main drain line 104. The
A second end of the bypass line 114 is detachably connected to the first end of the first purified water return line 110. A connector for detachably connecting the bypass line 114 and the like is provided at the first end of the first purified water return line 110.

(Bypass line)
The bypass line 114 allows the purified water that has passed through the purified water supply line 102 to pass through the drainage line (first purified water return pipe) without passing through the personal dialyzer when it is not necessary to supply purified water to the personal dialyzer. This is a line for directly feeding water to the line 110, the apparatus drain line 36, the first drain introduction line 106, and the main drain line 104).
A second end of the purified water supply line 102 is detachably connected to the first end of the bypass line 114. The first end of the first purified water return line 110 is detachably connected to the second end of the bypass line 114. When supplying purified water to the personal dialysis machine, the first end of the bypass line 114 is removed from the second end of the purified water supply line 102.

The bypass line 114 is usually composed of a flexible tube so that the second end of the purified water supply line 102 and the first end of the first purified water return line 110 can be easily attached and detached. ing.
The first end and the second end of the bypass line 114 are detachably connected to the second end of the purified water supply line 102 and the first end of the first purified water return line 110. A connector is provided.
In the middle of the bypass line 114, a sample port 132 through which a part of purified water flowing through the bypass line 114 can be taken out is provided.
The bypass line 114 may be provided with an electromagnetic valve or the like for opening and closing the bypass line 114 as necessary.

(Control means)
The control device 80 includes a processing unit (not shown), an interface unit (not shown), and a calendar timer (not shown).
In addition, a display touch panel 82 is electrically connected to the control device 80 as an input device and a display device.

  The control device 80 controls the start and stop of the supply of purified water from the purified water production apparatus 10 to the drain line; the start and stop of the supply of purified water to the personal dialysis machine, and these controls are necessary. Accordingly, it can be performed at an arbitrary date and time set in the calendar timer.

  The calendar timer includes a clock unit that manages the date and time and a storage unit that stores an operation schedule of the purified water production apparatus. The calendar timer can transmit an electrical signal at a set date and time stored in the storage unit.

  The interface unit electrically connects the electromagnetic valve 50, the pressurizing pump 60, the water quality sensor 70, the flow rate sensor 72, the display touch panel 82, and the like to the processing unit.

The processing unit controls opening / closing of the electromagnetic valve 50, driving of the pressurizing pump 60, and the like based on an electric signal from the calendar timer, an operation signal input to the processing unit, and the like.
Specifically, the processing unit performs, for example, the following control.

  When the purified water is produced in the purified water production apparatus 10 and the purified water is sent from the purified water production apparatus 10 to the drain line, the processing unit bypasses the bypass line 114 at the second end of the purified water supply line 102. And the second end of the bypass line 114 is connected to the first end of the first purified water return line 110 and the solenoid valve in the purified water production apparatus 10 By opening 50 and driving the pressurizing pump 60, the raw water is supplied to the activated carbon filter 12 and the reverse osmosis membrane module 14, and the purified water transfer line 34, the purified water obtained from the reverse osmosis membrane module 14 is purified. Water supply to the first purified water return line 110 (drainage line) via the water supply line 102 and the bypass line 114 is started.

  The processing unit stops the production of purified water in the purified water production apparatus 10 and also stops the supply of purified water from the purified water production apparatus 10 to the drainage line, and the pressurizing pump 60 in the purified water production apparatus 10. And the solenoid valve 50 is closed to supply the raw water to the activated carbon filter 12 and the reverse osmosis membrane module 14, and the first purification via the purified water transfer line 34, the purified water supply line 102 and the bypass line 114. Water supply of purified water to the water return line 110 (drainage line) is stopped.

  When the purified water is produced in the purified water production apparatus 10 and the purified water is supplied to the personal dialysis machine, the treatment unit is connected to the second end of the purified water supply line 102. With the water pipe connected and the drain pipe of the personal dialyzer connected to the first end of the second drain introduction line 108, the electromagnetic valve 50 in the purified water production apparatus 10 is opened, and the pressure pump By driving 60, supply of raw water to the activated carbon filter 12 and the reverse osmosis membrane module 14 and supply of purified water to a personal dialyzer are started.

  The processing unit stops the production of purified water in the purified water production apparatus 10 and also stops the pressurization pump 60 in the purified water production apparatus 10 when stopping the supply of purified water to the personal dialysis machine, By closing the solenoid valve 50, the supply of purified water to the personal dialysis machine is stopped.

  The processing unit may be realized by dedicated hardware. The processing unit is configured by a memory and a central processing unit (CPU), and a program for realizing the function of the processing unit is stored in the memory. The function may be realized by loading and executing.

(Mechanism of action)
1. In the counter 1 with built-in purified water production apparatus of the first embodiment described above, the first end is connected to the purified water outlet 22 of the purified water production apparatus 10 and the second end is the storage counter 2. A purified water supply line 102 disposed so as to be connectable with other lines outside the first water; a first purified water return line 110 (drainage line) for returning purified water from the outside of the storage counter 2 to the purified water production apparatus 10; A bypass line 114 that is detachably connected to the second end of the purified water supply line 102 and that passes purified water that has passed through the purified water supply line 102 directly to the first purified water return line 110; Therefore, even when the purified water is not used in a personal dialysis machine, the purified water produced by the purified water production apparatus 10 can be flowed to the purified water supply line 102. Therefore, the accumulated water in the purified water production apparatus 10 and the purified water supply line 102 can be discharged to the first purified water return line 110 via the bypass line 114. As a result, contamination of the purified water production apparatus 10 and the purified water supply line 102 can be suppressed.
Moreover, since the 2nd end part of the purified water supply line 102 is tightly plugged by the bypass line 114 and is not in an open state, it becomes difficult for bacteria to adhere to the second end part of the purified water supply line 102. As a result, bacteria and endotoxin are hardly generated in the staying water in the purified water supply line 102.
Further, since the purified water production apparatus 10 can be discharged from the purified water production apparatus 10 and the purified water supply line 102 while the purified water production apparatus 10 is stored in the storage counter 2 provided in the hospital room, the treatment room, etc. The work for suppressing the contamination of the water production apparatus 10 and the purified water supply line 102 is not troublesome, and it is not necessary to transport the purified water production apparatus 10 for the work for suppressing the contamination.

  2. Moreover, in the counter 1 with a built-in purified water production apparatus of 1st Embodiment demonstrated above, the sample port 132 which can take out a part of purified water which flows through the bypass line 114 is provided in the middle of the bypass line 114. Therefore, the purified water flowing in the bypass line 114 can be extracted easily and without being contaminated. Further, the accumulated water in the bypass line 114 can be drained. As a result, more stringent demands for contamination can be met.

  3. Moreover, in the counter 1 with a built-in purified water manufacturing apparatus of 1st Embodiment demonstrated above, it further has the control apparatus 80 which controls the water supply start to the drainage line from the purified water manufacturing apparatus 10 and a water supply stop. Therefore, the stagnant water in the purified water production apparatus 10 and the purified water supply line 102 can be discharged periodically.

<Maintenance method for the counter with built-in purified water production equipment>
When it is not necessary to supply purified water to the personal dialysis machine described later, the first end of the bypass line 114 is connected to the second end of the purified water supply line 102, and the first purified water return line is connected. With the second end of the bypass line 114 connected to the first end of 110, maintenance (maintenance management) is performed on the purified water producing apparatus built-in counter 1.
Hereinafter, the maintenance method of the counter 1 with built-in purified water production apparatus of 1st Embodiment is demonstrated concretely.

(Transmission of purified water from the purified water production equipment to the drain line)
When purified water is produced in the purified water production apparatus 10 and purified water is sent from the purified water production apparatus 10 to the drainage line, the processing unit of the control device 80 opens the electromagnetic valve 50 in the purified water production apparatus 10. Then, the pressurizing pump 60 is driven. Thereby, supply of raw water to the activated carbon filter 12 and the reverse osmosis membrane module 14 is started.

  The raw water supplied from the water supply line 100 through the raw water supply line 30 is passed through the activated carbon filter 12. The raw water from which the residual chlorine in the raw water is removed by the activated carbon filter 12 passes through the raw water transfer line 32, is pressurized by the pressurizing pump 60 of the raw water transfer line 32, and then supplied to the reverse osmosis membrane module 14. A portion of the raw water supplied to the reverse osmosis membrane module 14 passes through the reverse osmosis membrane to become purified water, and is discharged to the purified water transfer line 34. On the other hand, the remaining raw water that has not permeated through the reverse osmosis membrane becomes concentrated water and is discharged from the apparatus drain line 36 through the concentrated water discharge line 38 to the outside of the apparatus. A part of the concentrated water is returned to the raw water transfer line 32 via the concentrated water return line 40 branched from the concentrated water discharge line 38 and reused as raw water.

The purified water obtained by the reverse osmosis membrane module 14 is sent to the first purified water return line 110 (drainage line) via the purified water transfer line 34, the purified water supply line 102, and the bypass line 114. As a result, the retained water remaining in the purified water production apparatus 10 (purified water transfer line 34) and the purified water supply line 102 is discharged to the first purified water return line 110 via the bypass line 114.
The purified water (residual water) sent to the first purified water return line 110 passes through the first purified water return line 110, the apparatus drain line 36, the first drain introduction line 106, and the main drain line 104. Discharged outside.

  After a predetermined time has elapsed, the processing unit of the control device 80 stops the pressurization pump 60 in the purified water production apparatus 10 and closes the electromagnetic valve 50, thereby supplying raw water to the activated carbon filter 12 and the reverse osmosis membrane module 14. In addition, the supply of purified water to the first purified water return line 110 (drainage line) via the purified water transfer line 34, the purified water supply line 102, and the bypass line 114 is stopped.

The purified water is supplied from the purified water production apparatus 10 to the drain line based on, for example, the operation schedule stored in the storage unit of the calendar timer of the control device 80.
The frequency of sending purified water from the purified water production apparatus 10 to the drain line is preferably once every 30 to 180 minutes. The time for sending purified water from the purified water production apparatus 10 to the drain line is preferably 1 to 120 minutes per time.

(Mechanism of action)
In the maintenance method of the purified water production apparatus built-in counter 1 of the first embodiment described above, purified water is regularly produced by the purified water production apparatus 10, and the purified water is supplied to the purified water supply line 102 and the bypass. Since the water is sent to the drainage line via the line 114, the accumulated water in the purified water production apparatus 10 and the purified water supply line 102 can be discharged to the first purified water return line 110 via the bypass line 114. As a result, contamination of the purified water production apparatus 10 and the purified water supply line 102 can be suppressed.
Further, while the purified water production apparatus 10 is stored in the storage counter 2 provided in the hospital room, treatment room, etc., the accumulated water is discharged from the purified water production apparatus 10 and the purified water supply line 102, and the purified water supply line 102, etc. Therefore, the work for suppressing the contamination of the purified water production apparatus 10 and the purified water supply line 102 is not required, and the purified water production apparatus 10 is transported for the work for suppressing the contamination. There is no need to do.

<Supply of purified water to personal dialysis machine>
FIG. 2 is a schematic configuration diagram showing a state in which a personal dialysis machine is connected to the counter built in the purified water production apparatus of FIG.
When supplying purified water to the personal dialyzer 200, the first end of the bypass line 114 is removed from the second end of the purified water supply line 102. The terminal of the water conduit 202 of the personal dialyzer 200 is connected to the second end of the purified water supply line 102, and the personal dialyzer is connected to the first end of the second drainage introduction line 108. The terminal of the drain pipe 204 which 200 has is connected.

  When purified water is manufactured in the purified water production apparatus 10 and purified water is supplied to the personal dialysis apparatus 200, the processing unit of the control device 80 opens the solenoid valve 50 in the purified water production apparatus 10 and pressurizes it. By driving the pump 60, supply of raw water to the activated carbon filter 12 and the reverse osmosis membrane module 14 and supply of purified water to the personal dialyzer 200 are started. Drainage from the personal dialysis machine 200 is discharged to the main drainage line 104 via the second drainage introduction line 108.

  When the production of purified water is stopped in the purified water production apparatus 10 and the supply of purified water to the personal dialyzer 200 is stopped, the processing unit of the control device 80 causes the pressurizing pump in the purified water production apparatus 10 to stop. The supply of purified water to the personal dialyzer 200 is stopped by stopping 60 and closing the solenoid valve 50.

<< Second Embodiment >>
<Counter with built-in purified water production equipment>
FIG. 3 is a schematic configuration diagram showing a second embodiment of the purified water producing apparatus built-in counter according to the present invention.
Hereinafter, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

The purified water production apparatus built-in counter 1 of the second embodiment is different from the purified water production apparatus built-in counter 1 of the first embodiment in the following points.
A chemical solution bottle 92 (chemical solution addition means) for storing the chemical solution stock; the first end branches off from the middle upstream of the check valve 126 of the first purified water return line 110, and the second A second purified water return line 112 having an end connected to the second purified water inlet 28 of the purified water production apparatus 10; a first end connected to the chemical solution bottle 92, and a second end A chemical solution supply line 116 (chemical solution addition means) that merges with the purified water supply line 102; a branch from the purified water supply line 102 upstream from the location where the chemical solution supply line 116 merges, and the chemical solution supply line 116 And a washing water supply line 118 that merges.
-It is provided in the place where the 2nd purified water return line 112 branches from the 1st purified water return line 110, and the flow of purified water is the 1st purified water return line 110 side and the 2nd purified water return line 112 side A three-way valve 120 that switches between the purified water supply line 102 and the wash water supply line 118 and switches the flow of purified water between the purified water supply line 102 side and the wash water supply line 118 side. 122; a solenoid valve 124 (drug solution addition means) provided in the middle of the chemical solution supply line 116 on the downstream side of the location where the washing water supply line 118 joins; and opens and closes the chemical solution supply line 116; And a check valve 128 (chemical solution addition means) provided in the middle of the chemical solution supply line 116 on the upstream side of the location where the supply lines 118 merge.
A chemical solution concentrate pump 130 (chemical solution addition means) provided near the outlet of the chemical solution bottle 92 on the upstream side of the check valve 128 of the chemical solution supply line 116 is provided.
The control device 80 (control means) is electrically connected to the purified water production apparatus 10, and is electrically connected to the three-way valve 120, the three-way valve 122, the electromagnetic valve 124, and the chemical solution stock solution pump 130 to produce purified water. Control of the device 10, each valve and the pump is performed.

(Purified water production equipment)
The purified water production apparatus 10 in the second embodiment is different from the purified water production apparatus 10 in the first embodiment in the following points.
A first end is connected to the first purified water return line 110 at the second purified water inlet 28 and a second end is provided with an in-device purified water return line 42 that joins the raw water transfer line 32.
A check valve 54 provided in the middle of the in-apparatus purified water return line 42 is provided.
A heater 94 (heating means) and a temperature sensor (not shown) provided in the middle of the in-device purified water return line 42 upstream of the check valve 54 are provided.
The heater 94 and the temperature sensor are electrically connected to a control device 80 that performs these controls.
-The solenoid valve 50 is provided in the middle of the raw | natural water transfer line 32 upstream from the location where the concentrated water return line 40 and the refined water return line 42 in an apparatus merge.
-The pressurizing pump 60 is provided in the middle of the raw | natural water transfer line 32 downstream from the location where the concentrated water return line 40 and the refined water return line 42 in an apparatus merge.

(Purified water return line)
The first purified water return line 110 and the second purified water return line 112 are lines for returning purified water from the outside of the storage counter 2 to the purified water production apparatus 10.

  The purified water returned to the purified water production apparatus 10 through the second purified water return line 112 is returned to the raw water transfer line 32 via the in-apparatus purified water return line 42 and reused as raw water. The purified water returned to the raw water transfer line 32 includes the raw water transfer line 32, the purified water transfer line 34, the purified water supply line 102, the bypass line 114, a part of the first purified water return line 110, the second It circulates through a circulation line consisting of the purified water return line 112 and the purified water return line 42 in the apparatus.

(Medication solution addition means)
The chemical solution stock adding means includes a chemical solution bottle 92, a chemical solution supply line 116, a solenoid valve 124, a check valve 128, and a chemical solution pump 130, and in the purified water production apparatus 10, purified water. It is a means for adding a chemical solution stock solution. The chemical solution stock solution is added to the purified water of the purified water supply line 102 by driving the chemical solution stock adding means, that is, by opening the electromagnetic valve 124 and driving the chemical solution stock pump 130.

(Control means)
The control device 80 includes a processing unit (not shown), an interface unit (not shown), and a calendar timer (not shown).
In addition, a display touch panel 82 is electrically connected to the control device 80 as an input device and a display device.

  The control device 80 starts and stops the supply of purified water from the purified water production apparatus 10 to the drain line; circulation and stop of purified water to the circulation line; heating start and stop of purified water; chemical solution to the purified water Addition start and stop of stock solution; supply start and stop supply of purified water to personal dialysis machine can be controlled, and these controls can be performed at any time set in the calendar timer as required Is.

  The calendar timer includes a clock unit that manages the date and time and a storage unit that stores an operation schedule of the purified water production apparatus. The calendar timer can transmit an electrical signal at a set date and time stored in the storage unit.

  The interface unit electrically connects the water quality sensor 70, the flow rate sensor 72, the heater 94 and the temperature sensor, and the solenoid valve, three-way valve and pump provided in each line, the display touch panel 82, and the processing unit. To do.

Based on the electric signal from the calendar timer, the operation signal input to the processing unit, etc., the processing unit drives the heater 94, opens / closes the electromagnetic valves provided in each line, switches the three-way valve, drives the pump, etc. It is something to control.
Specifically, the processing unit performs, for example, the following control.

  When the purified water is produced in the purified water production apparatus 10 and the purified water is sent from the purified water production apparatus 10 to the drain line, the processing unit bypasses the bypass line 114 at the second end of the purified water supply line 102. And the second end of the bypass line 114 is connected to the first end of the first purified water return line 110 and the solenoid valve in the purified water production apparatus 10 50, the electromagnetic valve 124 in the chemical solution addition means is closed, the flow of purified water in the three-way valve 122 is switched to the purified water supply line 102 side, and the flow of purified water in the three-way valve 120 is switched to the first purified water return line 110. By switching to the side and driving the pressurizing pump 60, the raw water is supplied to the activated carbon filter 12 and the reverse osmosis membrane module 14, and the reverse osmosis membrane module 14 Of purified water was purified water transfer line 34, but the first purified water return line 110 that has passed through the purified water supply line 102 and bypass line 114 to start the water supply to the (drain line).

  The processing unit stops the production of purified water in the purified water production apparatus 10 and also stops the supply of purified water from the purified water production apparatus 10 to the drainage line, and the pressurizing pump 60 in the purified water production apparatus 10. And the solenoid valve 50 is closed to supply the raw water to the activated carbon filter 12 and the reverse osmosis membrane module 14, and the first purification via the purified water transfer line 34, the purified water supply line 102 and the bypass line 114. Water supply of purified water to the water return line 110 (drainage line) is stopped.

  The processing unit includes a raw water transfer line 32, a purified water transfer line 34, a purified water supply line 102, a bypass line 114, a part of the first purified water return line 110, a second purified water return line 112, and purified water in the apparatus. When circulating purified water through the circulation line consisting of the return line 42, the electromagnetic valve 50 in the purified water production apparatus 10 is closed, and the flow of purified water in the three-way valve 120 is switched to the second purified water return line 112 side, By driving the pressurizing pump 60, the circulation of the purified water in the circulation line is started.

  The processing unit includes a raw water transfer line 32, a purified water transfer line 34, a purified water supply line 102, a bypass line 114, a part of the first purified water return line 110, a second purified water return line 112, and purified water in the apparatus. When stopping the circulation of the purified water in the circulation line composed of the return line 42, the circulation of the purified water in the circulation line is stopped by stopping the pressurizing pump 60 in the purified water production apparatus 10.

  When heating the purified water in the purified water return line 42 in the apparatus, the processing unit starts heating the purified water in the purified water return line 42 in the apparatus by driving the heater 94 in the purified water production apparatus 10. Is.

  When the processing unit stops heating the purified water in the purified water return line 42 in the apparatus, the processing unit stops heating the purified water in the purified water return line 42 in the apparatus by stopping the heater 94 in the purified water production apparatus 10. It will stop.

  When adding the chemical solution stock stored in the chemical solution bottle 92 to the purified water in the purified water supply line 102, the processing unit drives the chemical solution addition means, that is, opens the electromagnetic valve 124 and opens the chemical solution pump. By driving 130, the addition of the chemical solution stock to the purified water in the purified water supply line 102 is started.

  When stopping the addition of the chemical solution stock to the purified water in the purified water supply line 102, the processing section stops the chemical solution pump 130 and closes the solenoid valve 124, thereby supplying the purified water in the purified water supply line 102. The addition of the chemical solution stock solution is stopped.

  When the purified water is produced in the purified water production apparatus 10 and the purified water is supplied to the personal dialysis machine, the treatment unit is connected to the second end of the purified water supply line 102. With the water pipe connected and the drain pipe of the personal dialyzer connected to the first end of the second drain introduction line 108, the electromagnetic valve 50 in the purified water production apparatus 10 is opened, and the chemical solution stock solution is added The raw water supply to the activated carbon filter 12 and the reverse osmosis membrane module 14 is performed by closing the electromagnetic valve 124 and switching the purified water flow in the three-way valve 122 to the purified water supply line 102 side and driving the pressurizing pump 60. , And supply of purified water to personal dialysis machines.

  The processing unit stops the production of purified water in the purified water production apparatus 10 and also stops the pressurization pump 60 in the purified water production apparatus 10 when stopping the supply of purified water to the personal dialysis machine, By closing the solenoid valve 50, the supply of purified water to the personal dialysis machine is stopped.

  The processing unit may be realized by dedicated hardware. The processing unit is configured by a memory and a central processing unit (CPU), and a program for realizing the function of the processing unit is stored in the memory. The function may be realized by loading and executing.

(Mechanism of action)
In the counter 1 with built-in purified water production apparatus of the second embodiment described above, in addition to the action mechanisms 1 to 3 of the counter 1 with built-in purified water production apparatus of the first embodiment, the following action mechanism is provided. Have.

4). In the counter 1 with the built-in purified water production apparatus of the second embodiment described above, the heating means (heater 94) for heating the purified water is provided, so hot water obtained by heating the purified water. The raw water transfer line 32, the purified water transfer line 34, the purified water supply line 102, the bypass line 114, a part of the first purified water return line 110, the second purified water return line 112, and the purified water return line in the apparatus. It is possible to circulate through a circulation line comprising 42. As a result, the circulation line and the reverse osmosis membrane module 14 can be sterilized.
In addition, since the chemical solution stock adding means (chemical solution bottle 92, chemical solution supply line 116, solenoid valve 124, check valve 128 and chemical solution pump 130) for adding the chemical solution to purified water is provided, the purified water The disinfecting chemical solution prepared by adding the chemical solution stock solution can be passed through the purified water supply line 102, the bypass line 114, the first purified water return line 110, and the like. As a result, each line can be sterilized.
Further, when purified water is not used in a personal dialysis machine, it can be sterilized at all times, and each line can be easily sterilized.

  5. Further, the counter 1 with built-in purified water production apparatus of the second embodiment described above further includes a control device 80 for controlling the driving of the heating means (heater 94) and the driving of the chemical stock solution adding means. In particular, the purified water supply line 102 and the like can be disinfected.

<Maintenance method for the counter with built-in purified water production equipment>
Hereinafter, the maintenance method of the counter 1 with built-in purified water production apparatus of 2nd Embodiment is demonstrated concretely.

(Transmission of purified water from the purified water production equipment to the drain line)
The supply of purified water from the purified water production apparatus 10 to the drainage line in the second embodiment is different from the first embodiment in the following points.
Before the pressurizing pump 60 is driven, the processing unit of the control device 80 opens the electromagnetic valve 50 in the purified water production apparatus 10, closes the electromagnetic valve 124 in the chemical solution stock adding means, and purifies the purified water in the three-way valve 122. The flow is switched to the purified water supply line 102 side, and the flow of purified water in the three-way valve 120 is switched to the first purified water return line 110 side.

(Disinfection of circulating lines and reverse osmosis membrane modules with hot water)
From the raw water transfer line 32, the purified water transfer line 34, the purified water supply line 102, the bypass line 114, a part of the first purified water return line 110, the second purified water return line 112, and the purified water return line 42 in the apparatus When disinfecting the circulation line and the reverse osmosis membrane module 14 with hot water, purified water is first circulated through the circulation line. Specifically, the processing unit of the control device 80 closes the electromagnetic valve 50 in the purified water production apparatus 10, switches the flow of purified water in the three-way valve 120 to the second purified water return line 112 side, and pressurizes the pressure pump 60. To start the circulation of purified water in the circulation line.

  While circulating the purified water to the circulation line, the heater of the purified water production apparatus 10 is driven by the processing unit of the control device 80 to start heating the purified water in the purified water return line 42 in the apparatus. Thereby, hot water is circulated through the circulation line, and the circulation line and the reverse osmosis membrane module 14 are disinfected with the hot water.

  After the elapse of a predetermined time, heating of the purified water in the purified water return line 42 in the apparatus is stopped by stopping the heater 94 in the purified water production apparatus 10 by the processing unit of the control device 80. In the processing unit of the control device 80, after confirming that the purified water has returned to room temperature based on the temperature information (electrical signal) of purified water sent from the temperature sensor, the processing unit of the control device 80 produces purified water. By stopping the pressurizing pump 60 in the apparatus 10, the circulation of the purified water in the circulation line is stopped.

Disinfection with hot water is performed based on, for example, an operation schedule stored in the storage unit of the calendar timer of the control device 80.
The frequency of disinfection with hot water is preferably once every 1 to 7 days.
The time for circulating hot water through the circulation line is preferably 10 to 60 minutes per time.
The temperature of the hot water is adjusted by controlling the heater 94 by the processing unit of the control device 80 based on the temperature information (electrical signal) of the purified water obtained by the temperature sensor. The temperature of hot water is preferably 80 to 97 ° C.

(Disinfection with disinfecting chemicals in the purified water supply line)
When disinfecting the purified water supply line 102 or the like with the disinfecting chemical solution, first, purified water is produced in the purified water production apparatus 10 according to the procedure described above, and the purified water is sent from the purified water production apparatus 10 to the drain line. To do.

  While supplying purified water from the purified water production apparatus 10 to the drain line, the processing unit of the control device 80 drives the chemical stock solution adding means, that is, opens the electromagnetic valve 124 and drives the chemical stock solution pump 130 for purification. Addition of the chemical solution to the purified water in the water supply line 102 is started to prepare a disinfecting chemical solution. Thus, the disinfecting chemical solution is passed through the purified water supply line 102, the bypass line 114, the first purified water return line 110, etc., and each line is disinfected with the disinfecting chemical solution.

  After the predetermined time has elapsed, the processing unit of the control device 80 stops the chemical solution stock pump 130 and closes the solenoid valve 124 to stop the addition of the chemical solution to the purified water in the purified water supply line 102 and pressurize. By stopping the pump 60 and closing the solenoid valve 50, the purified water from the purified water production apparatus 10 to the drain line is stopped. In this state, the purified water supply line 102, the bypass line 114, the first purified water return line 110, and the like are immersed in the disinfecting chemical solution and disinfected.

After elapse of a predetermined time, purified water is produced in the purified water production apparatus 10 and purified water is sent from the purified water production apparatus 10 to the drain line so that the purified water supply line 102, the bypass line 114, and the first purified water are supplied. Rinse the return line 110 and the like.
After a predetermined time has passed, the flow of purified water in the three-way valve 122 is switched to the washing water supply line 118 side, and the chemical solution stock supply line 116 is rinsed.
After a predetermined time has passed, the flow of purified water in the three-way valve 122 is switched to the purified water supply line 102 side, the pressurizing pump 60 is stopped, and the solenoid valve 50 is closed, thereby purifying the purified water production apparatus 10 to the drainage line. Stop water supply.

The disinfection with the disinfectant chemical is performed based on, for example, an operation schedule stored in the storage unit of the calendar timer of the control device 80.
The frequency of disinfection with the disinfecting chemical solution is preferably once every 1 to 7 days.
The time for passing the disinfectant chemical through each line is preferably 1 to 120 minutes per time.
The time for each line to be soaked and disinfected with a disinfectant solution is preferably 30 to 1440 minutes.
The rinse time of the purified water supply line 102, the bypass line 114, the first purified water return line 110, etc. is preferably 15 to 120 minutes per time.
The rinsing time of the chemical solution supply line 116 is preferably 2 to 30 minutes per time.

Examples of the chemical solution stock solution include an aqueous sodium hypochlorite solution, peracetic acid, formalin and the like.
In the case of a sodium hypochlorite aqueous solution, the concentration of the chemical solution in the chemical solution bottle 92 is, for example, 60,000 to 120,000 ppm.
In the case of a sodium hypochlorite aqueous solution, the concentration of the disinfectant chemical prepared by adding the chemical stock solution to purified water is, for example, 1 to 2,000 ppm.

(Mechanism of action)
In the maintenance method of the purified water production apparatus built-in counter 1 of the second embodiment described above, purified water is regularly produced by the purified water production apparatus 10, and the purified water is supplied to the purified water supply line 102 and the bypass. Since the water is sent to the drainage line via the line 114, the accumulated water in the purified water production apparatus 10 and the purified water supply line 102 can be discharged to the first purified water return line 110 via the bypass line 114. As a result, contamination of the purified water production apparatus 10 and the purified water supply line 102 can be suppressed.
Further, when the purified water is not used in the personal dialyzer 10, it can be sterilized at all times, and each line can be easily sterilized.
Further, while the purified water production apparatus 10 is stored in the storage counter 2 provided in the hospital room, treatment room, etc., the accumulated water is discharged from the purified water production apparatus 10 and the purified water supply line 102, and the purified water supply line 102, etc. Therefore, the work for suppressing the contamination of the purified water production apparatus 10 and the purified water supply line 102 is not required, and the purified water production apparatus 10 is transported for the work for suppressing the contamination. There is no need to do.

<Supply of purified water to personal dialysis machine>
FIG. 4 is a schematic configuration diagram showing a state in which a personal dialysis machine is connected to the counter built in the purified water production apparatus of FIG.
When supplying purified water to the personal dialyzer 200, the first end of the bypass line 114 is removed from the second end of the purified water supply line 102. The terminal of the water conduit 202 of the personal dialyzer 200 is connected to the second end of the purified water supply line 102, and the personal dialyzer is connected to the first end of the second drainage introduction line 108. The terminal of the drain pipe 204 which 200 has is connected.

  When purified water is manufactured in the purified water manufacturing apparatus 10 and purified water is supplied to the personal dialysis apparatus 200, the electromagnetic valve 50 in the purified water manufacturing apparatus 10 is opened by the processing unit of the control device 80, and the chemical solution stock solution The electromagnetic valve 124 in the adding means is closed, the flow of purified water in the three-way valve 122 is switched to the purified water supply line 102 side, and the pressurizing pump 60 is driven, whereby the raw water to the activated carbon filter 12 and the reverse osmosis membrane module 14 is driven. The supply and the supply of purified water to the personal dialysis machine 200 are started. Drainage from the personal dialysis machine 200 is discharged to the main drainage line 104 via the second drainage introduction line 108.

  When the production of purified water is stopped in the purified water production apparatus 10 and the supply of purified water to the personal dialyzer 200 is stopped, the processing unit of the control device 80 causes the pressurizing pump in the purified water production apparatus 10 to stop. The supply of purified water to the personal dialyzer 200 is stopped by stopping 60 and closing the solenoid valve 50.

<< Other Embodiments >>
The purified water production apparatus built-in counter of the present invention includes: a storage counter having a storage space therein; a purified water production apparatus stored in the storage space of the storage counter; and a first end of the purified water production apparatus. A purified water supply line connected to the water outlet and having a second end connected to another line outside the storage counter; a drain line for discharging the waste water to the outside; a second of the purified water supply line The first embodiment and the second embodiment of the illustrated example may be used as long as they include a bypass line that is detachably connected to the end of the water and that directly supplies purified water that has passed through the purified water supply line to the drainage line. It is not limited to the counter 1 with a built-in purified water production apparatus of the embodiment.

For example, in the counter with built-in purified water production apparatus of the present invention, either one or both of the heating means for heating the purified water and the chemical solution stock adding means for adding the chemical solution stock solution to the purified water may be provided. Good.
In the purified water manufacturing apparatus built-in counter of the present invention, the second end of the bypass line may be connected to the second drainage introduction line.
In the purified water production apparatus built-in counter of the present invention, the purified water sent to the first purified water return line via the bypass line does not drain but passes the second purified water return line. May be returned to the purified water production apparatus 10 and reused as raw water.
In the counter with built-in purified water production apparatus of the present invention, the control means is not necessarily provided.
Moreover, in the counter with a purified water production apparatus of the present invention, the second drainage introduction line is not necessarily provided.
Moreover, in the counter with a purified water production apparatus of the present invention, the ultrafiltration membrane filter 90 is not necessarily provided.
Moreover, the purified water manufacturing apparatus should just be what can manufacture purified water, and as a purified water manufacturing apparatus, you may use a well-known purified water manufacturing apparatus.
Moreover, you may provide the alerting | reporting means to alert | report that disinfection is in the counter built in the purified water manufacturing apparatus of this invention. Examples of the notification means include a display on the screen of the display device of the control device 80, a lamp, and the like.

  The counter with built-in purified water production apparatus of the present invention is useful as a counter provided in a hospital room, a treatment room or the like for performing dialysis treatment.

  DESCRIPTION OF SYMBOLS 1 Purified water manufacturing apparatus built-in counter, 2 Storage counter, 10 Purified water manufacturing apparatus, 12 Activated carbon filter, 14 Reverse osmosis membrane module, 20 Raw water inlet, 22 Purified water outlet, 24 1st purified water inlet, 26 Drain outlet, 28 Second purified water inlet, 30 Raw water supply line, 32 Raw water transfer line, 34 Purified water transfer line, 36 Drainage line for equipment, 38 Concentrated water discharge line, 40 Concentrated water return line, 42 In-machine purified water return line, 50 Solenoid valve, 52 Check valve, 54 Check valve, 60 Pressure pump, 70 Water quality sensor, 72 Flow rate sensor, 80 Control device, 82 Display touch panel, 90 Ultrafiltration membrane filter, 92 Chemical solution stock bottle, 94 Heater, 100 Water supply line, 102 Purified water supply line, 104 Main drainage line, 106 First drainage introduction , 108 Second drainage introduction line, 110 First purified water return line, 112 Second purified water return line, 114 Bypass line, 116 Chemical stock supply line, 118 Wash water supply line, 120 Three-way valve, 122 Three-way Valve, 124 Solenoid valve, 126 Check valve, 128 Check valve, 130 Chemical stock pump, 132 Sample port, 200 Personal dialyzer, 202 Water conduit, 204 Drain pipe.

Claims (6)

A storage counter having a storage space inside;
A purified water production apparatus stored in a storage space of the storage counter;
A purified water supply line in which a first end is connected to a purified water outlet of the purified water production apparatus, and a second end is arranged to be connectable to another line outside the storage counter;
A drainage line for discharging wastewater to the outside;
A purified water production apparatus built-in counter comprising: a bypass line that is detachably connected to a second end of the purified water supply line and that directly sends purified water that has passed through the purified water supply line to the drainage line.   The counter with built-in purified water production apparatus according to claim 1, wherein a sample port through which a part of the purified water flowing through the bypass line can be taken out is provided in the middle of the bypass line.   The counter with built-in purified water production apparatus according to claim 1 or 2, further comprising a control means for controlling the start and stop of water supply of the purified water from the purified water production apparatus to the drainage line.   The purified water production according to any one of claims 1 to 3, further comprising any one or both of a heating unit for heating the purified water and a chemical solution stock adding unit for adding a chemical solution stock solution to the purified water. Built-in counter.   The counter with built-in purified water manufacturing apparatus according to claim 4, further comprising a control means for controlling one or both of driving of the heating means and driving of the chemical solution stock adding means. It is the maintenance method of the counter built in the purified water production apparatus according to any one of claims 1 to 5,
A maintenance method for a counter with a built-in purified water manufacturing apparatus, wherein purified water is periodically manufactured by the purified water manufacturing apparatus, and the purified water is sent to the drainage line via the purified water supply line and the bypass line.

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