JP4092418B2 - Bath water pH maintenance system - Google Patents

Description

  The present invention relates to a system for maintaining the pH value of bathtub water at an arbitrary value, and more particularly, to an apparatus system for maintaining hot spring water having an arbitrary pH value and sterilizing / filtering circulation.

  Conventionally, bathing agents and hot water baths have been used as alternatives to the fatigue recovery effect and disease treatment effect of hot spring baths. Patent Document 1 proposes a hot spring water production apparatus that can elute inorganic substances and mineral ions to produce a large amount of full-fledged hot spring water having the mineral properties contained in real hot springs at low cost. ing.

  In this device, a mineral porous body formed by firing mineral mineral minerals with a firing base is stored in a pressure vessel, high-pressure steam is supplied to generate mineral ion vapor, and mineral ion vapor is mixed with hot water. The hot spring water was produced by condensing the water. According to the present invention, bath water similar to hot springs containing various ions can be produced by using various minerals as raw materials, but there is a problem that costs are required for firing the raw materials and maintaining the apparatus.

  Patent Document 2 proposes a method for enhancing the disease healing effect and sterilizing effect of hot spring water. In this invention, it is disclosed that electrolysis is performed on hot spring water or a liquid obtained by adding water to hot spring water to concentrate cations or anions contained in the hot spring water to enhance or alleviate the action.

  However, in this invention, the effect of natural hot spring water is further enhanced, and there is a problem that cannot be implemented unless the natural hot spring water as a raw material is available.

  Today, the pH of bath water in bathing facilities depends on the nature of the water supply and well water supplied. If the pH value of this bath water can be maintained at an arbitrary value, the skin effect of alkaline springs in natural hot springs, the effect of removing old skin, and the same disinfection / sterilization and tightening effect of skin as in acid springs Bath water that gives a bathing effect such as can be obtained. However, the use of chemical agents to change the pH of bathing water has the potential to adversely affect or be dangerous to the human body taking the bath. For this reason, the pH maintenance method which does not use a chemical | medical agent has been desired.

  In the hot spring facilities used by the public, bathtub water is filtered and circulated, but it has been found that bacteria such as Legionella grow and inhabit in the filtration device, and high concentrations such as sodium hypochlorite. Periodic disinfection and sterilization is performed by using concentration. However, there has been a problem that it is difficult to sterilize and clean the inside of filter media such as sand filter or cartridge filter.

  In addition, the bath water has a problem that fats eluted from the body and fibers such as skin adhere to the filtration device and the filtration filter material as an eluate or a solid matter and are difficult to clean.

  FIG. 4 shows a bath water impurity filtering method in a conventional bathhouse facility. FIG. 4A is a diagram showing a filter disinfection method using a disinfectant solution in a normal filter or cartridge type filtration device.

  In the normal filtration mode, the bathtub water 10 a is sucked from the bathtub 10 by the pump 13 through the recovery pipe 12, passes through the filtrate input pipe 17 and enters the filtration device 16. The bathtub water 10a is filtered and returned to the bathtub 10 through the filtered water recovery pipe 18 through the bathtub water supply pipe 11, and the above flow is repeated to filter the bathtub water.

  Here, in the disinfection mode in which the filter of the filter device 16 is disinfected with the disinfectant, the on-off valves 11a and 12a are closed so that the disinfectant does not go to the bathtub, and the on-off valve 12b is opened to circulate the disinfectant. The filter device 16 was disinfected by circulating the disinfectant liquid through the filter by the pump 13 while flowing the disinfectant liquid from the input branch port S.

  FIG. 4B is a diagram illustrating a method of disinfecting sand with a disinfecting liquid in the sand filtering device 36. In the normal filtration mode, the flow is the same as that in FIG. 4A, and the bath water 10a flows from the upper side to the lower side of the sand filtration device 36 to stop the flow of impurities, suspended matters, and the like with sand. Therefore, in order to remove or disinfect this, it is effective to let the sand filter 36 flow from the lower side to the upper side.

  Therefore, as shown in FIG. 4B, in the disinfection mode, as in FIG. 4A, for the sake of safety, the on-off valves 11a and 12a are closed, 12b is opened, and then the disinfectant is supplied from the input branch S. It is introduced and sucked by the pump 13. Further, the opening / closing valve 36d is tightened, 36b is opened, the bath water 10a containing the disinfectant is introduced from the branch pipe 23 to the pipe 35, the opening / closing valve 36c is further opened, and the branch pipe 24 is opened below the sand filter 36 ". The on-off valve 36a is opened and discharged from the branch pipe 25 on the upper side of the sand filtration device 36 to the outside.

  In any case, disinfection has a lot of work time and work such as cleaning up the disinfectant, and there is a problem that harmful waste liquid is generated.

Japanese Patent Laid-Open No. 2001-803 (Pages 2, 3 and 1) Japanese Unexamined Patent Publication No. 2000-126792 (pages 2, 3 and 1)

  In view of the above problems, the present invention provides a bath water pH maintaining system capable of maintaining bath water having an arbitrary pH value and a device for filtering contaminants or fungi inhabiting bath water with strongly acidic ionized water. It is an object to provide a bath water pH maintenance system that can be disinfected, sterilized, and cleaned.

In order to solve the above-mentioned problem, the bath water pH maintaining system of the present invention is a bath water pH maintaining system in a bath facility that supplies water having a pH value similar to that of a natural hot spring water that can be arbitrarily set. ,
The bath facility includes a bathtub water supply pipe to the bathtub, a bathtub water recovery pipe for circulating or discharging the bathtub water, a filtration device for filtering dissolved impurities and floating substances in the bathtub water, and the bathtub water. A pump for circulating the bath water from the recovery pipe to the filtration device, a pump suction pipe and a pump discharge pipe connected to the pump, a filtrate water input pipe connected from the pump discharge pipe to the filtration device, and filtered there And at least a filtered water recovery pipe for returning the bathtub water to the bathtub water supply pipe, and allowing the sequential filtration apparatus to perform bath water circulation,
Further, a pH maintaining device comprising an electrolytic cell and its control unit, a first branch pipe connected to the electrolytic cell inlet pipe part, the bathtub recovery pipe, and a pump suction between the pump discharge pipe and the filtrate input pipe Between the pipes, there are provided a second branch pipe connected to the electrolytic cell outlet pipe part, an inlet / outlet electronic valve opened and closed by a control signal input terminal at the electrolytic cell inlet and outlet pipe parts, and an output terminal for pH value. An inlet / outlet pH meter with
The control unit outputs an open control signal to the terminal of the inlet / outlet electronic valve at every first predetermined time or time, allows a part of the bath water circulating water to flow in, and a pH value from the inlet / outlet pH meter. To be able to compare with a predetermined pH value on the temporary working memory, and output a signal to the electronic control DC power source connected to the positive and negative electrode terminals of the electrolytic cell to automatically operate the electrolytic cell, The first program means for suspending the electrolytic cell when the pH value is reached is provided.

  The control unit outputs an open control signal to the inlet / outlet electronic valve terminal every second predetermined time or during a bath pause time, and electronic valves provided respectively in the bathtub water supply pipe and the recovery pipe The control signal is output to the electronic valve provided between the outlet of the filtered water recovery pipe and the inlet of the pump suction pipe. Enter the pH value from the outlet pH meter, apply positive to the center electrode and negative to the cylindrical electrode so that strong acidic ionic water is generated on the positive and negative electrodes of the electrolytic cell, automatically operate the electrolytic cell, It comprises at least second program means for outputting a signal for opening a strong acid ion discharge valve below the filtration device and pausing the filtration tank after a predetermined time has elapsed since reaching a predetermined strong acid ion water pH value. Features.

The filtration device is a sand filtration device, and in order to remove impurities and suspended matters during filtration, the sand filtration device is further provided in the filtered water input pipe so as to flow from the upper side of the filtration sand. The third branch pipe, the fourth branch pipe provided on the lower side of the sand filtration device, the fifth branch pipe, the third branch pipe and the fourth branch pipe connected to the upper side of the device. A strong acid ion water input pipe and a strong acid ion water discharge pipe connected to the fifth branch pipe;
The control unit outputs an open control signal to the inlet / outlet electronic valve terminal during a predetermined time or a bath stop time, and the electronic valve provided for each of the bathtub water supply pipe and the recovery pipe outputs a close control signal, The flow of water into and out of the bathtub is shut off, and a close control signal is provided between the third branch pipe and the fourth branch pipe for the electronic valves provided in the third branch pipe and the fifth branch pipe. An open control signal is output to the electronic valve, a close control signal is output to the electronic valve provided between the fourth branch pipe and the filtered water recovery pipe, and an open control signal is output to the electronic valve provided to the strong acid ion water discharge pipe. Input the pH value from the inlet / outlet pH meter, and apply positive to the central electrode and negative to the cylindrical electrode to automatically operate the electrolytic cell so that strongly acidic ionic water is generated on the positive and negative electrodes of the electrolytic cell And the electrolytic cell is stopped after a predetermined time has elapsed since reaching the predetermined strong acidic ion pH value. Characterized in that it comprises program means least.

  By maintaining the bath water having an arbitrary pH value, it is possible to provide a bath facility with an effect replacing the natural hot spring. Moreover, if a plurality of systems according to the present invention are installed, it is possible to provide both weak alkaline springs and weak acidic springs in the same facility, and it is possible to economically realize a hot spring facility having various bathtubs.

  Moreover, according to the filtration circulation control means of the pH maintaining system of the bathtub water of the present invention, it is possible to efficiently disinfect and clean the filter medium of the filter device.

  Furthermore, since stabilized chlorine dioxide can be activated and used as a bactericidal agent, a bathhouse facility capable of supplying bath water that does not contain high-concentration residual chlorine like a conventional bactericidal agent is provided. Can do.

  The best mode for carrying out the invention will be described in detail with reference to the drawings.

  FIG. 1: is a block diagram which shows the 1st Example of the bath water pH maintenance system of a bathhouse facility.

  In FIG. 1, 1 is a bathtub water pH maintaining system, 10 is a bathtub, 10a is bathtub water, 11 is a bathtub water supply pipe, and 12 is a bathtub water recovery pipe. A supply pipe electronic valve 11a and a recovery pipe electronic valve 12a each provided with an open / close control signal terminal are provided in these pipe lines. Furthermore, the direct connection electronic valve 12b which connects those piping 11 and 12 directly is provided.

  13 is a pump that circulates water in the bathtub 10, 14 is a pump suction pipe connected to the bathtub water recovery pipe 12, and 15 is a pump discharge pipe. The pipe line includes a pump valve 13a and a reverse support valve 13b.

  Reference numeral 16 denotes a filtration device, which contains a filter. The filter is preferably a cartridge type that can be easily replaced. Reference numeral 17 denotes a filtered water input pipe connected from the pump discharge pipe 15 to the upper inlet of the filtration device 16.

  Reference numeral 18 denotes a filtered water recovery pipe connected to the lower outlet of the filtering device 16, and 16a denotes a drain valve or a sterilized washing water discharge electronic valve in the filtering device 16.

  Next, the branch pipe for taking in part (or all) of the bathtub water 10a circulating between the bathtub 10 and the filtration apparatus 16 and returning the ionized water to the pH value maintaining apparatus 90 is shown.

  21 is a first branch pipe for taking in the bath water, and 22 is a second branch pipe for returning ionized water.

  Reference numeral 91 denotes an electrolytic cell, and 99 denotes a control unit which is a computer system. In the electrolytic cell 91, 92 is a negative or positive central rod electrode, 93 is a diaphragm, and 94 is a positive or negative cylindrical electrode.

  The electrolytic cell 91 is filled with an electrolyte solution 91b and sealed with an upper lid 91a. The diaphragm 93 is a cylindrical pipe-shaped ion exchange diaphragm.

  The diaphragm 93 is an invention disclosed by one of the inventors of the present application (Japanese Patent Application No. 2003-421699 filed on Dec. 18, 2003), and the configuration thereof is as follows.

  That is, a heated or water-soluble polymer material is kneaded into granular or crushed ceramic, and is formed into a flat plate mold material that is extrusion-molded on a reinforcing cloth-like fiber, and is placed on a cylindrical mold material corresponding to the inner diameter of the cylindrical pipe. It is the dried ceramic mixing resin binder layer diaphragm.

  The cylindrical diaphragm 93 having the above structure receives treated water from the lower side of the cylindrical part, and the treated water rises to the upper side of the cylindrical part. An electrolytic cell 91 is formed in which the ascending treated water is ionized by the direct current electric field applied to the central rod electrode 92 and the cylindrical electrode 94 on both sides of the diaphragm 93 and the ionic water is generated up to the upper side of the cylindrical portion.

  Through the electrolyte solution 91b, the treated water inlet pipe 90a is connected so that the treated water is guided to the lower side of the cylindrical diaphragm 93, while the opposite side of the inlet pipe 90a is connected to the first pipe 90a. Connected to the branch pipe 21. An inlet pH meter 95a and an inlet electronic valve 96a are provided on the upper portion of the upper lid 91a of the electrolytic cell 91 in the input pipe portion.

  Next, the treated water rising from the cylindrical diaphragm 93 becomes ionic water, is provided at the upper outlet of the diaphragm 93, and enters the steam-water separation tank 90c.

  Here, the gas in the generated ion water is discharged from the degassing pipe 90f. Ionized water is discharged from the outlet pipe portion 90b connected to the cylindrical side wall of the steam separator 90c. The outlet pipe portion 90b is connected to the second branch pipe 22, and the discharged ionic water enters the pump suction pipe 14, is sucked into the pump 13, and a part or all of the ionic water can be circulated.

  The outlet pipe portion 90b is also provided with an outlet pH meter 95b and an outlet electronic valve 96b.

  Further, the lower cylindrical portion of the diaphragm 93 is further branched to be provided with a sludge removal pipe 90f. The sludge removal pipe 90f passes through the electrolyte solution and discharges the sludge from the electrolytic cell upper lid 91a to the outside through the electronic valve 96c. It is possible.

  The configuration of the control unit 99 will be described with reference to FIG. The control unit 99 is a DC voltage as a control signal via an I / F unit between at least a storage device 99l such as an HDD, an input device unit 99m, a display device 99n, a central bar electrode 92 of the electrolytic cell 91, and a cylindrical electrode 94. DC power supply 99z, power supply 99z output terminals 99x, 99y, and electronic valves 96a, 96b, 96c, 11a, 12a, 12b, 16a output terminals 99p to 99q, inlet pH meter 95a, outlet pH meter Input terminals 99a and 99b from 95b are provided, and a CPU for controlling them is provided. The control unit 99 is configured by a computer system.

  The bathtub water pH maintenance system 1 of the first embodiment shown in FIG. 1 operates as follows.

  (1) When the computer system of the control unit 99 of the pH maintaining device 90 is reset to the initial state, the electronic valve 96a from the first branch pipe 21 to the electrolytic cell inlet pipe part 90a and the outlet pipe part 90b The electronic valve 96b to the second branch pipe 22 receives the closing control signal, and the electrolytic bath 91 and the bath water 10a are insulated.

  In the initial state, the electronic valves 11a and 12a are opened by an opening control signal, and the electronic valves 96c, 12b and 16a are closed by a closing control signal.

  (2) In the initial state where the electrolytic cell 91 is initially isolated as described above, the bathtub water 10a of the bathtub 10 is sucked by the pump 13 through the bathtub water recovery pipe 12, and is filtered from the filtrate input pipe 17 to the filtration device 16. Enter the upper side. The filtered bathtub water 10 a exits from the lower side of the filtering device 16, enters the bathtub water supply pipe 11 through the filtered water recovery pipe 18, and returns to the bathtub 10. The above operation is repeated.

  (3) Here, the CPU of the control unit 99 executes the first program means programmed in advance. That is, the CPU of the control unit 99 opens the control signal to the output terminals 99p and 99q via the interface unit at every first predetermined time or time in a state where the bath water 10a is circulated through the filtration device 16 by the pump 13. Is output. The signal is input to the control terminals of the inlet / outlet electronic valves 96a / 96b, and the inlet / outlet electronic valves 96a and 96b are opened.

  As a result, a part of the circulation of the bath water is circulated to the pH maintaining device 90, and the pH values from the inlet pH meter 95a and the outlet pH meter 95b are input to the connected 99a and 99b, and the A / D converter The data is read into the CPU working memory (temporary memory RAM) via the interface unit, etc., and the rate of increase of the input pH value per unit time at every fixed time and at each inlet / outlet and a predetermined predetermined pH. It is possible to calculate whether the value has been reached.

  (4) Next, the CPU sends a signal to the control terminal of the DC power supply 99z via the interface unit, and the negative or positive center rod electrode 92 connected to them from the DC output terminals 99x, 99y of the DC power supply 99z, A voltage is applied to both electrode terminals of the positive or negative cylindrical electrode 94. As a result, a DC electric field is generated between the electrodes on both sides of the diaphragm 93.

  (5) As a result of the above control, the bath water 10a flowing into the electrolytic cell 91 from the first branch pipe 21 passes through the inlet pipe portion 90a, and the water to be treated flows from the lower side of the cylindrical portion of the diaphragm 93 and is ionized while being ionized. The generated ion water rises to the upper side of the cylindrical part of the diaphragm 93, is degassed in the steam / water separation tank 90c, passes through the outlet pipe part 90b, and is sucked into the pump 13 from the second branch pipe 22. This operation is repeated.

  (6) During this repetition, the CPU of the control unit 99 compares the pH value of the inlet / outlet read at a certain time in the program procedure with a pH value similar to a predetermined natural hot spring water. When the pH value is reached or agrees, it is automatically reset, the electrolytic cell is put into a resting state, and is put into a waiting state until the next start time.

  When the predetermined pH value is in the range of alkaline ionized water, the polarity of the DC voltage is applied so that the center rod electrode 92 is negative and the cylindrical electrode 94 is positive. When the pH value is in the range of acidic ionized water, the polarity of the DC voltage is applied so that the center rod electrode 92 is positive and the cylindrical electrode 94 is negative.

  (7) Next, the CPU of the control unit 99 executes the following second program means every second predetermined time or during the bath pause time.

  First, the CPU outputs an open control signal to the terminals of the inlet electronic valve 96a and the outlet electronic valve 96b connected from the output terminals of 99p and 99q via the interface unit, and the bathtub water supply pipe 11 and the recovery pipe 12 are connected. A closed control signal is output from the output terminals 99y and 99s of the CPU to the electronic valves 11a and 12a respectively provided in each of the electronic valves 11a and 12a to completely shut off the flow of water into and out of the bathtub 10, and An open control signal is output from the output terminal 99c of the CPU to the electronic valve 12b provided between the inlets of the pump suction pipe 14 via the interface unit. In this state, the pump 13 sucks in the electrolytic cell 91 and the filtered water recovery pipe 18 through the pump suction pipe 14, discharges it to the pump discharge pipe 15, and water circulates between the electrolytic tank 91 and the filtering device 16.

  (8) Next, the CPU reads the pH value measured by the inlet / outlet pH meter 95, 95b from the input terminals 99a, 99b, compares the time on the CPU working memory as a parameter, and unit of pH value It is possible to calculate the rate of increase per hour and whether or not it matches a predetermined value, and at the same time, a predetermined range that can generate disinfectable ion water to both electrodes 92 and 94 sandwiching the diaphragm 93 of the electrolytic cell. The polarity and voltage value are input to the control terminal of the DC power source 99z, the voltage value of the polarity is output from the 99x and 99y terminals, and applied to the electrodes 92 and 94 of the connected electrolytic cell. Disinfection is usually performed with strongly acidic ionized water, in which case the center rod electrode 92 is negative and the cylindrical electrode is positive. When washing, strong alkaline ionized water is used, and in this case, the center rod electrode 92 has a positive polarity and the cylindrical electrode has a negative polarity.

  (9) In the above state, the CPU 91 generates strong acidic or strong alkaline ionized water as a disinfectant or cleaning solution for the electrolytic cell 91 and reads the pH value of the pH meter 95b so as to obtain a predetermined pH value. Adjusts the voltage value. As described above, strong acid or strongly alkaline ionized water is generated by the electrolytic cell 91, and the generated strong acid or strongly alkaline ionized water passes through the filtered water input pipe 17 and enters the filtering device 16, and the filter or the like is used. The filtered water collecting pipe 18 is sterilized and washed, returns to the second branch pipe 22 through the direct-coupled electronic valve 12b, is sucked into the pump 13 from the pump suction pipe 14, and the sterilization of the filter device 16 is repeated.

  (10) The CPU operates the electrolytic cell 91 for a predetermined time previously determined in the second program means, and then sends an open control signal to the cleaning sterilizing water discharge electronic valve 16a via the interface unit. Output from the terminal 99q, discharge strongly acidic or strongly alkaline ionic water to the outside, and reset the control unit 99 after a predetermined time.

  Next, FIG. 2 shows a second embodiment of the bath water pH maintenance system for bath facilities. In FIG. 2, the same reference numerals as those used in FIG.

  The filtering device in the second embodiment is a sand filtering device 36. Unlike normal filters, cartridge filters, etc., the sand used for water filtration needs to be sterilized with special consideration.

  That is, in order to remove impurities and suspended solids from the bath water 10a and perform disinfection effectively, it is necessary to allow the disinfection water to flow in the opposite bottom-to-up direction with respect to the top-to-bottom filtration direction. is there.

  For this purpose, the sand filtration device 36 shown in FIG. 2 is provided with a pipe for removing impurities and disinfecting, so that disinfection with strongly acidic ionized water can be performed.

  A third branch pipe 23 is provided in the middle of the filtered water input pipe 17, and a fourth branch pipe 24 is provided at the lower inlet / outlet of the sand filter 36, and the third and fourth branch pipes 23, 24 are provided. The sterilizing / cleaning water inflow pipe 35 is connected between the two and an electronic valve 36b is provided in the middle of the pipe.

  In addition, the fifth branch pipe 25 is provided at the upper inlet / outlet of the sand filter device 36, and an electronic valve 36 d is provided between the third branch pipe 23.

  In addition, the fifth branch pipe 35 is connected to a sterilizing / cleaning water discharge pipe 37 as shown in the drawing, and is provided with a piping path for discharging to the outside through the sterilizing / cleaning water discharge electronic valve 36a.

  Operation | movement of the 2nd implementation cold bathtub water pH maintenance system 2 of FIG. 2 is as follows.

  (A) When the computer system of the control unit 99 of the pH maintaining device 90 is reset to the initial state, the electronic valve 96a from the first branch pipe 21 to the electrolytic cell inlet pipe part 90a and the outlet pipe part 90b The electronic valve 96b to the second branch pipe 22 receives the closing control signal, and the electrolytic bath 91 and the bath water 10a are insulated.

  In the initial state, the electronic valves 11a, 12a, 36c, and 36d are opened by an open control signal, and the electronic valves 96c, 12b, 36a, and 36b are closed by a close control signal.

  (B) In the initial state where the electrolytic cell 91 is initially isolated as described above, the bathtub water 10a of the bathtub 10 is sucked by the pump 13 through the bathtub water recovery pipe 12, and the electronic valve 36d from the filtrate input pipe 17 And enters the upper side of the filtering device 36 from the fifth branch pipe 25 on the upper side of the filtering device 36. The filtered bathtub water 10a exits from the lower side of the filtration device 36 and enters the fourth branch pipe 24, passes through the electronic valve 36c, passes through the filtrate collection pipe 18, and enters the bathtub water supply pipe 11. Return to bathtub 10. The above operation is repeated.

  (C) Here, the CPU of the control unit 99 executes the first program means programmed in advance. That is, the CPU of the control unit 99 controls the opening to the output terminals 99p and 99q via the interface unit at every first predetermined time or time in a state where the bath water 10a is circulated through the sand filter device 36 by the pump 13. Output a signal. The signal is input to the control terminal of the connected inlet / outlet electronic valve 96a / 96b, and the inlet / outlet electronic valves 96a and 96b are opened.

  As a result, a part of the circulation of the bath water is circulated to the pH maintaining device 90, and the pH values from the inlet pH meter 95a and the outlet pH meter 95b are input to the connected 99a and 99b, and the A / D converter The data is read into the CPU working memory (temporary memory RAM) via the interface unit, etc., and the rate of increase of the input pH value per unit time at every fixed time and at each inlet / outlet and a predetermined predetermined pH. It is possible to calculate whether the value has been reached.

  (D) Next, the CPU sends a signal to the control terminal of the DC power supply 99z via the interface unit, and the negative or positive center rod electrode 92 connected to them from the DC output terminals 99x, 99y of the DC power supply 99z, A voltage is applied to both electrode terminals of the positive or negative cylindrical electrode 94. As a result, a DC electric field is generated between the electrodes on both sides of the diaphragm 93.

  (E) As a result of the above control, the bathtub water 10a flowing into the electrolytic cell 91 from the first branch pipe 21 passes through the inlet pipe portion 90a, and the water to be treated flows from the lower side of the cylindrical portion of the diaphragm 93 and is ionized while being ionized. The generated ion water rises to the upper side of the cylindrical part of the diaphragm 93, is degassed in the steam / water separation tank 90c, passes through the outlet pipe part 90b, and is sucked into the pump 13 from the second branch pipe 22. This operation is repeated.

  (F) During this repetition, the CPU of the control unit 99 compares the pH value of the inlet / outlet read at a certain time in the program procedure with a pH value similar to a predetermined natural hot spring water. When the pH value is reached or agrees, it is automatically reset, the electrolytic cell is put into a resting state, and is put into a waiting state until the next start time.

  When the predetermined pH value is in the range of alkaline ionized water, the polarity of the DC voltage is applied so that the center rod electrode 92 is negative and the cylindrical electrode 94 is positive. When the pH value is in the range of acidic ionized water, the polarity of the DC voltage is applied so that the center rod electrode 92 is positive and the cylindrical electrode 94 is negative.

  (G) Next, the CPU of the control unit 99 executes the following third program means at every second predetermined time or during the bath pause time.

  First, the CPU outputs an open control signal to the terminals of the inlet electronic valve 96a and the outlet electronic valve 96b connected from the output terminals of 99p and 99q via the interface unit, and the bathtub water supply pipe 11 and the recovery pipe 12 are connected. A closed control signal is output from the output terminals 99y and 99s of the CPU to the electronic valves 11a and 12a respectively provided in each of the electronic valves 11a and 12a to completely shut off the flow of water into and out of the bathtub 10, and An open control signal is output from the output terminal 99c of the CPU to the electronic valve 12b provided between the inlets of the pump suction pipe 14 via the interface unit. In this state, the pump 13 sucks in the electrolytic tank 91 and the filtered water recovery pipe 18 through the pump suction pipe 14, discharges it to the pump discharge pipe 15, and water circulates between the electrolytic tank 91 and the filtration device 36.

  (H) Next, the CPU reads the pH value measured by the inlet / outlet pH meter 95, 95b from the input terminals 99a, 99b, compares the time on the CPU working memory as a parameter, and the unit of the pH value. It is possible to calculate the rate of increase per hour and whether or not it matches a predetermined value, and at the same time, a predetermined range that can generate disinfectable ion water to both electrodes 92 and 94 sandwiching the diaphragm 93 of the electrolytic cell. The polarity and voltage value are input to the control terminal of the DC power source 99z, the voltage value of the polarity is output from the 99x and 99y terminals, and applied to the electrodes 92 and 94 of the connected electrolytic cell. Disinfection is usually performed with strongly acidic ionized water, in which case the center rod electrode 92 is negative and the cylindrical electrode is positive. When washing, strong alkaline ionized water is used, and in this case, the center rod electrode 92 has a positive polarity and the cylindrical electrode has a negative polarity.

  (I) In the above state, the CPU 91 generates strong acidic or strong alkaline ionized water as a disinfectant or cleaning solution for the electrolytic cell 91, and reads the pH value of the pH meter 95b so as to obtain a predetermined pH value. Adjusts the output voltage value. As described above, strongly acidic or strongly alkaline ionic water is generated by the electrolytic cell 91, and the generated strongly acidic or strongly alkaline ionic water passes through the filtered water input pipe 17 and enters from below the filtering device 36. , The CPU outputs a closing control signal to the electronic valve 36d and sends an opening control signal to the electronic valve 36b from the terminals 99x and 99y of the control unit 99 via the interface unit, and the strongly acidic or strong alkaline ionized water is supplied from the third valve. The sterilized washing water inflow pipe 35 enters from the branch pipe 23 and flows in from the lower side of the sand filter device 36 through the fourth branch pipe 24. The electronic valve 36c is closed in response to the closing control signal from the terminal 99v of the control unit 99 at that time. Furthermore, the electronic valve 36a is simultaneously open upon receiving an open control signal from the terminal 99w of the control unit 99.

  Therefore, the inflow water from the lower side of the sand filtering device 36 pushes up and cleans impurities such as impurities in the sand and suspended matter, disinfects bacteria adhering to the sand, and strongly acid or strongly alkaline ionic water. Flows to the fifth branch pipe 25 and is discharged to the outside through the sterilization washing water discharge pipe 37.

  (N) The CPU operates the electrolysis tank 91 for a predetermined time previously determined in the second program means, and then sends an open control signal to the sterilization washing water discharge electronic valve 16a via the interface unit. Output from the terminal 99q, discharge strongly acidic or strongly alkaline ionized water to the outside, and reset the control unit 99 after a predetermined time. That is, the cleaning / disinfecting mode of the third program shut-off ends, and the mode returns to the mode in which the first program means maintains the bath water at the initial pH value similar to natural hot springs.

It is a block diagram which shows the 1st Example of the bathtub water pH maintenance system of a bathhouse facility. It is a block diagram which shows the 2nd Example of the bathtub water pH maintenance system of a bathhouse facility. It is a block diagram which shows the pH maintenance apparatus used for the system of this invention. FIG. 4 shows a bath water impurity filtering method in a conventional bathhouse facility, (a) shows a filter disinfection method with a disinfectant solution in a normal filter or cartridge type filtration device, and (b) shows sand filtration. It is a figure which shows the disinfection method of the sand by the disinfection liquid in the apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bath water pH maintenance system 2 Bath water pH maintenance system 10 Bath 10a Bath water 11 Bath water supply pipe 11a Supply pipe electronic valve 12 Bath water recovery pipe 12a Recovery pipe electronic valve 12b Direct connection electronic valve 13 Pump 13a Pump valve 13b Check Valve 14 Pump suction pipe 15 Pump discharge pipe 16 Filtration device, cartridge filter 16a Sterilized washing water discharge electronic valve 17 Filtration water input pipe 18 Filtration water recovery pipe 21 First branch pipe 22 Second branch pipe 23 Third branch pipe 24 4th branch pipe 25 5th branch pipe 35 Sterilization washing water inflow pipe 36 Sand filter 36a Sterilization washing water discharge electronic valve 36b Sterilization washing water inflow electronic valve 36c, 36d Sterilization washing water blocking valve 37 Sterilization washing water discharge pipe 90 pH maintenance device 90a Inlet pipe part 90b Outlet pipe part 90c Air / water separation tank 90e Degassing pipe 90 Sludge removal pipe 91 Electrolytic tank 91a Electrolytic tank top cover 91b Electrolyte solution 92 Negative or positive central rod electrode 93 Diaphragm 94 Positive or negative cylindrical electrode 95a Inlet pH meter 95b Outlet pH meter 96a Inlet electronic valve 96b Outlet electronic valve 99 Controller 99a, 99b Input terminal from pH meter 99p-v Electronic valve output terminal 99z DC power supply with control terminal

Claims (3)

A bath water pH maintenance system in a bath facility that supplies water to a bathtub with water resembling natural hot spring water, the pH value of which can be arbitrarily set,
The bath facilities include a bathtub water supply pipe to the bathtub, a bathtub water recovery pipe for circulating or discharging the bathtub water, a filtration device for filtering dissolved impurities and floating substances in the bathtub water, and the bathtub water. A pump for circulating the bath water from the recovery pipe to the filtration device, a pump suction pipe and a pump discharge pipe connected to the pump, a filtrate water input pipe connected from the pump discharge pipe to the filtration device, and filtered there And at least a filtered water recovery pipe for returning the bathtub water to the bathtub water supply pipe, and allowing the sequential filtration apparatus to perform bath water circulation,
Further, a pH maintaining device comprising an electrolytic cell and its control unit, a first branch pipe connected to the electrolytic cell inlet pipe part, the bathtub recovery pipe, and a pump suction between the pump discharge pipe and the filtrate input pipe Between the pipes, there are provided a second branch pipe connected to the electrolytic cell outlet pipe part, an inlet / outlet electronic valve opened and closed by a control signal input terminal at the electrolytic cell inlet and outlet pipe parts, and an output terminal for pH value. An inlet / outlet pH meter with
The control unit outputs an open control signal to the terminal of the inlet / outlet electronic valve at every first predetermined time or time, allows a part of the bath water circulating water to flow in, and a pH value from the inlet / outlet pH meter. To be able to compare with a predetermined pH value on the temporary working memory, and output a signal to the electronic control DC power source connected to the positive and negative electrode terminals of the electrolytic cell to automatically operate the electrolytic cell, A bath water pH maintenance system comprising at least first program means for suspending the electrolytic cell when a pH value of is reached.   The control unit outputs an open control signal to the inlet / outlet electronic valve terminal every second predetermined time or during the bath pause time, and is closed to the electronic valves respectively provided in the bathtub water supply pipe and the recovery pipe. A control signal is output, the flow of water into and out of the bathtub is shut off, an open control signal is output to an electronic valve provided between the outlet of the filtered water recovery pipe and the inlet of the pump suction pipe, and the inlet / outlet pH Enter the pH value from the meter, apply positive to the center electrode so that strong acidic ionic water is generated at the positive and negative electrodes of the electrolytic cell, apply negative to the cylindrical electrode, or apply negative to the center electrode so that strong alkaline ionic water is generated. The positive electrode is applied to the cylindrical electrode, and the electrolytic cell is automatically operated. After a predetermined time has elapsed after reaching a predetermined strongly acidic or strongly alkaline ionized water pH value, sterilization washing discharge under the filtration device Outputs the valve open signal and stops the filter tank. Bath water pH maintenance system according to claim 1, characterized in that it comprises at least a gram unit. The filtration device is a sand filtration device, and in order to remove impurities and suspended matters during filtration, the sand filtration device is further provided in the filtrate water input pipe so as to flow from the upper side of the filtration sand. 3 branch pipes, a fourth branch pipe provided on the lower side of the sand filtration device, a fifth branch pipe on the upper side of the device, and a sterilization cleaning in which the third branch pipe and the fourth branch pipe are connected. A water input pipe, and a sterilization washing water discharge pipe connected to the fifth branch pipe;
The control unit outputs an open control signal to the inlet / outlet electronic valve terminal during a predetermined time or a bath stop time, and the electronic valve provided for each of the bathtub water supply pipe and the recovery pipe outputs a close control signal, The flow of water into and out of the bathtub is shut off, and a close control signal is provided between the third branch pipe and the fourth branch pipe for the electronic valves provided in the third branch pipe and the fifth branch pipe. An open control signal to the electronic valve, a close control signal to the electronic valve provided between the fourth branch pipe and the filtered water recovery pipe, an open control signal to the electronic valve provided to the sterilization washing water discharge pipe, Enter the pH value from the inlet / outlet pH meter and apply positive to the center electrode and negative to the cylindrical electrode so that strong acidic ionic water is generated to the positive and negative electrodes of the electrolytic cell, or generate strong alkaline ionic water The electrolyzer is automatically operated by applying a negative voltage to the center electrode and a positive voltage to the cylindrical electrode. Sex or strongly alkaline bath water pH maintenance system according to claim 1, characterized in that it comprises at least a third program means for halting the electrolytic cell after a predetermined time has elapsed after reaching the ionized water pH values.

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