JP2006272031A - Apparatus for producing drinking water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem of an apparatus for producing drinking water that high-purity alkaline ionized water can not be produced from reverse osmosis membrane-permeated water while saving the power and installation space of this apparatus if an auxiliary agent or the like is added to the reverse osmosis membrane-permeated water since the reverse osmosis membrane-permeated water has a small amount of mineral content and consequently it is necessary to make good the shortage of a counter ion and impress high voltage. <P>SOLUTION: The apparatus for producing drinking water is characterized in that the concentrated water concentrated by a reverse osmosis membrane is electrolyzed and then the alkaline water produced by electrolyzing the concentrated water is mixed with the reverse osmosis membrane-permeated water so that high-purity alkaline ionized water can be supplied while saving the power and installation space of this apparatus. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention provides high-purity water suitable for drinking from which harmful substances such as organic substances, off-flavor substances and heavy metals harmful to living bodies are removed with high efficiency, and drinking water providing high-purity alkaline ionized water suitable for drinking The present invention relates to a manufacturing apparatus.

  Alkaline ion water is said to be effective for drinking and is effective for symptoms such as chronic diarrhea, indigestion, and excessive acidity in the stomach, and many ion water generators that produce alkali ion water are commercially available. However, in the case of such a device, as a means for removing harmful substances such as organic substances, odorous substances and heavy metals harmful to the living body, adsorption by activated carbon, membrane separation by hollow fiber membranes with a pore diameter of several μm, ion exchange by zeolite, etc. Since it is used, the removal rate of impurities is as low as about 80%, and it is difficult to say that the water is safe for living bodies.

A water supply device that provides water that has passed through a reverse osmosis membrane and has removed harmful substances with high efficiency is also commercially available. However, the reverse osmosis membrane does not pass through not only harmful substances but also minerals essential for the production of alkaline water as a counter ion of OH ⁻ , so minerals contained in the permeated water produce alkaline ionized water suitable for drinking. Not enough to let you. In addition, since the electric conductivity of water is low, the resistance for electrolysis is large, and in order to electrolyze permeate and generate alkaline ionized water, it is necessary to apply a high voltage to a large electrolyzer, There is a problem that the apparatus becomes large and high power is required.

In order to promote electrolysis, there is also a method of performing electrolysis after adding an electrolyte such as NaCl to the permeated water of the reverse osmosis membrane (see, for example, JP-A-2003-175390). In addition, in the case of electrolyzing water with a small amount of minerals even in a commercially available ionic water generator, electrolysis is generally carried out after adding calcium lactate or calcium glycerophosphate as an electrolytic aid. However, when alkaline water is generated by electrolysis after adding a substance such as NaCl, the main substance contained in the generated alkaline water is NaOH, which makes it difficult to select an auxiliary agent, such as being unsuitable for drinking. In addition, commercially available ionic water generators are difficult to control by dissolving a certain amount of calcium lactate or calcium glycerophosphate in water, and it is necessary to manually add an auxiliary agent at regular intervals, which requires troublesome maintenance. There is such a problem.
JP 2003-175390 A

  The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide high-purity alkaline ionized water that is power-saving and space-saving and suitable for drinking without maintenance such as addition of an auxiliary agent. Is to provide.

In order to achieve the above object, according to the first aspect of the present invention,
Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the third pipeline;
Flow path opening and closing means for opening and closing the third pipe line downstream of the second water storage means,
The third pipe is communicated with the first pipe on the downstream side of the flow path opening and closing means;
The control means includes
When permeate is selected by the selection means, the third conduit is closed by the flow path opening and closing means,
When alkaline water is selected, it is possible to provide high-purity alkaline ionized water by the potable water production apparatus, wherein the third pipe is opened by the channel opening / closing means. .

According to the invention of claim 2,
Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the third pipeline;
A first pump in the middle of the first conduit downstream of the first water storage means;
A second pump in the middle of the third pipeline downstream of the second water storage means;
The third conduit communicates with the first conduit downstream of the second pump;
The control means includes
When permeate is selected by the selection means, the first pump is driven,
When alkaline water is selected, the first and second pumps are driven, so that it is possible to provide high-purity alkaline ionized water using a potable water production apparatus.

According to the invention of claim 3,
Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the second conduit;
Flow path opening and closing means for opening and closing the second or third pipe line on the downstream side of the second water storage means,
The third conduit communicates with the first conduit;
The control means includes
When permeate is selected by the selection means, the second or third pipe is closed by the flow path opening / closing means,
When alkaline water is selected, the second and third pipes are opened by the flow path opening / closing means, and high-purity alkaline ionized water is provided by a potable water production apparatus. It was possible.

According to the invention of claim 4,
Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the second conduit;
A first pump in the middle of the first conduit downstream of the first water storage means;
A second pump in the middle of the second conduit downstream of the second water storage means;
The third conduit communicates with the first conduit;
The control means includes
When permeate is selected by the selection means, the first pump is driven,
When alkaline water is selected, the first and second pumps are driven, so that it is possible to provide high-purity alkaline ionized water using a potable water production apparatus.

  According to the present invention, since the concentrated water of the mineral-rich reverse osmosis membrane is electrolyzed, alkaline water having a high pH can be generated in a power-saving and space-saving manner. By mixing and diluting, alkaline ionized water suitable for drinking and containing almost no harmful substances can be supplied without special maintenance.

  Hereinafter, embodiments of the present invention will be described in detail.

  A first embodiment of the potable water production apparatus of the present invention will be described with reference to the block diagram of FIG. In FIG. 1, 1 is a reverse osmosis membrane, 2 is an electrolysis apparatus which produces acidic water and alkaline water by electrolysis, and 10 is a tube for supplying raw water such as tap water and well water to the reverse osmosis membrane 1. A passage 11 is a first conduit for transferring the permeated water that has passed through the reverse osmosis membrane 1, and 12 is a second conduit for transferring the water that has not permeated the reverse osmosis membrane 1, that is, concentrated water, 13 Is a third conduit for transferring alkaline water generated by the electrolyzer 2, 14 is a fourth conduit for discharging acidic water generated by the electrolyzer 2, and 21 is in the middle of the first conduit 11. First water storage means for storing a certain permeate, 22 is a second water storage means for storing alkaline water in the middle of the third pipe line 13, and 31 is a pipe line downstream of the water storage means 22. A channel opening / closing means for opening and closing 13, and 41 for draining permeate in the middle of the pipe 11 Road switching means, 42 a flow path switching means for draining alkaline water in the course of the pipe 12, 51 is a water discharge means for jetting the permeate and alkaline water.

  A method of water discharge of the potable water production apparatus according to the first embodiment of the present invention will be described with reference to FIG. In the potable water production apparatus of the present invention, when the user selects water to be discharged, the control device in the apparatus operates and the selected water is discharged.

  The water treatment apparatus of the present invention operates in a state where a predetermined amount of water is stored in all the water storage means 21 and 22. The permeated water level in the water storage means 21 is higher than that of the pipe line 11 on the downstream side of the water storage means 21, and the alkaline water level in the water storage means 22 is higher than that of the pipe line 13 on the downstream side of the water storage means 22. deep.

  When the user selects to discharge permeated water, the channel 13 is closed by the channel opening / closing means 31. The permeated water flows out of the water storage means 21, is transferred through the pipe 11, and is discharged by the water discharge means 51.

  When the user chooses to discharge alkaline water, the channel 13 is opened by the channel opening / closing means 31. Permeated water flows out of the water storage means 21 and is transferred through the pipe 11, and alkaline water flows out of the water storage means 22 and is transferred through the pipe 13. The alkaline water transferred through the pipe 13 merges with the permeate and is discharged by the water discharge means 51.

  Although the water storage method is not limited to this, an example will be described with reference to FIG. The amount of water stored in the water storage means 21 and 22 is kept within a predetermined range. That is, when any one of the permeated water and alkaline water storage amount falls below a predetermined range, the raw water passes through the pipe line 10 and is supplied to the reverse osmosis membrane 1 to be divided into permeated water and concentrated water. The permeated water is transferred through the pipe 11 and stored in the water storage means 21. The concentrated water is transferred through the pipe 12 and is electrolyzed by the electrolyzer 2 into alkaline water and acidic water. Alkaline water generated by the electrolyzer 2 is transferred through the pipe 13 and stored in the water storage means 22. The acidic water is transferred through the conduit 14 and drained. When the amount of water stored in all the water storage means reaches a predetermined amount, the supply of raw water is stopped.

  If the amount of alkaline water in the water storage means 22 does not reach the predetermined amount even though the permeated water in the water storage means 21 has reached a predetermined amount, the supply of raw water is continued and the generated permeated water is Drain from the channel switching means 41. Similarly, if the amount of permeated water in the water storage means 21 has not reached the predetermined amount even though the amount of alkaline water in the water storage means 22 has reached a predetermined amount, the supply of raw water is continued. The generated alkaline water is drained from the flow path switching means 42.

  When the alkaline water in the water storage means 22 has reached a predetermined amount, but the permeated water in the water storage means 21 has not reached the predetermined amount, the supply of raw water is continued. It may be energized to generate alkaline water or may not be energized. When not energized, the concentrated water may be drained from the flow path switching means 42 or drained from the pipe line 14. Although not shown in the figure, a flow path switching valve may be provided in the middle of the pipe 12 and drained therefrom, or a mechanism for draining excess concentrated water to the reverse osmosis membrane 1 may be provided and drained. Also good.

  The flow path switching means 42 may not be provided. In this case, when excess alkaline water is generated, the flow path opening / closing means 31 is closed and drained together with the acidic water from the pipeline 14.

  The permeated water of the reverse osmosis membrane can be used for drinking or cooking as fresh water or soft water.

Here, tap water generally contains ions such as HCO ₃ ⁻ and CO ₃ ²⁻ , and the water near neutrality mainly exists as HCO ₃ ⁻ . When water containing HCO ₃ ⁻ is made alkaline, it reacts with OH ⁻ as shown in Chemical Formula 1 and has a buffering action that consumes OH ⁻ . Therefore, OH ⁻ cannot produce alkaline water having a predetermined pH unless the consumption by HCO ₃ ⁻ is excessively added.

Concentrated water is water with high electrical conductivity and mineral richness as shown in FIG. When the concentrated water is electrolyzed, alkaline water having a pH of about 12 is generated depending on the size of the electrolyzer. Theoretically, if the alkaline water is diluted 100 times, water having a pH of around 10 which is alkaline water suitable for drinking can be obtained. However, when this alkaline water was diluted with water containing HCO ₃ ⁻ , for example, tap water, tap water treated with activated carbon or a hollow fiber membrane, OH ⁻ was consumed by HCO ₃ ⁻ and diluted 100 times. If so, it is well below pH 10 and becomes neutral water.

On the other hand the reverse osmosis membrane, HCO ₃ ^- because neither transmission, the transmission water HCO ₃ ^- is hardly contained. Therefore, even if the pH 12 water obtained by electrolyzing the concentrated water is diluted 100 times with permeated water, there is almost no consumption of OH ⁻ by HCO ₃ ⁻ , so alkaline water having a pH of about 10 that is not significantly different from the theoretical value is used. Can be made. As a result, it is possible to produce high-purity alkaline ionized water that is mostly permeated through the reverse osmosis membrane and has few impurities such as harmful substances, and has an effect of supplying alkaline water at a high flow rate.

  The magnification for diluting the alkaline water with the permeate varies depending on the nature of the alkaline water generated by electrolysis.

  The mixing ratio of the alkaline water and the permeated water may be controlled by the channel opening / closing means 31 or may be controlled by the channel switching means 41 and 42. Although not shown in the figure, a means for adjusting the flow rate may be provided and controlled.

  Moreover, the production efficiency of alkaline water by electrolysis is determined by the current value. On the other hand, the voltage applied at that time depends on the electrical conductivity, and the higher the electrical conductivity, the lower the voltage. Therefore, as shown in FIG. 3, the electric power required for electrolysis depends on the electric conductivity of water, and higher electroconductivity enables electrolysis with lower power consumption. Since the water concentrated by the reverse osmosis membrane is mineral-rich and has high electrical conductivity as shown in FIG. 2, it can be electrolyzed in a power-saving and space-saving manner. Concentrated water has a sufficiently high electric conductivity and a large amount of minerals, so that it is not necessary to add an electrolytic aid or the like, and the apparatus can be operated without special maintenance.

  A second embodiment of the potable water production apparatus of the present invention will be described with reference to the block diagram of FIG. In FIG. 4, 1 is a reverse osmosis membrane, 2 is an electrolysis apparatus which produces acidic water and alkaline water by electrolysis, and 10 is a tube for supplying raw water such as tap water and well water to the reverse osmosis membrane 1. A passage 11 is a first conduit for transferring the permeated water that has passed through the reverse osmosis membrane 1, and 12 is a second conduit for transferring the water that has not permeated the reverse osmosis membrane 1, that is, concentrated water, 13 Is a third conduit for transferring alkaline water generated by the electrolyzer 2, 14 is a fourth conduit for discharging acidic water generated by the electrolyzer 2, and 21 is in the middle of the first conduit 11. First water storage means for storing a certain permeated water, 22 is a second water storage means for storing alkaline water in the middle of the third pipeline 13, and 41 is a permeate water in the middle of the pipeline 11. A channel switching means 42 for draining is used for draining alkaline water in the middle of the pipe 12. A path switching means, 51 is a water discharging means for discharging permeated water and alkaline water, 61 is a pump for transferring permeated water downstream of the water storage means 21, and 62 is for transferring alkaline water downstream of the water storage means 22. It is a pump.

  A method of water discharge of the drinking water production apparatus according to the second embodiment of the present invention will be described with reference to FIG. The drinking water production apparatus of the present invention is operated in a state where a predetermined amount of water is stored in all the water storage means. Water is discharged from different water discharge means.

  When the user selects to discharge permeated water, the permeated water is transferred from the water storage means 21 by the pump 61 through the pipe 11 and discharged from the water discharging means 51.

  When the user selects to discharge alkaline water, the permeated water is transferred from the water storage means 21 through the pipe 11 by the pump 61. Alkaline water is transferred from the water storage means 22 through the pipe 13 by a pump 62. The alkaline water transferred through the pipe 13 merges with the permeate and is discharged by the water discharge means 51.

  The mixing ratio of the alkaline water and the permeated water may be controlled by adjusting the flow rate using the pumps 61 and 62, or may be controlled by the flow path switching means 41 and 42. Although not shown in the figure, a means for adjusting the flow rate may be provided and controlled.

  A third embodiment of the potable water production apparatus of the present invention will be described with reference to the block diagram of FIG. In FIG. 5, 1 is a reverse osmosis membrane, 2 is an electrolysis apparatus that generates acidic water and alkaline water by electrolysis, and 10 is a tube for supplying raw water such as tap water and well water to the reverse osmosis membrane 1. A passage 11 is a first conduit for transferring the permeated water that has passed through the reverse osmosis membrane 1, and 12 is a second conduit for transferring the water that has not permeated the reverse osmosis membrane 1, that is, concentrated water, 13 Is a third conduit for transferring alkaline water generated by the electrolyzer 2, 14 is a fourth conduit for discharging acidic water generated by the electrolyzer 2, and 21 is in the middle of the first conduit 11. First water storage means for storing a certain permeated water, 23 is a second water storage means for storing concentrated water in the middle of the second pipe line 12, and 31 is a connection between the water storage means 23 and the pipe line 11. A channel opening / closing means for opening and closing the pipeline 13 between the communication portions, 32 is a downstream side of the communication portion with the pipeline 13 A flow path opening / closing means for opening and closing the pipe line 11, 33 is a flow path opening / closing means for opening and closing the pipe line 13 on the downstream side of the communicating portion with the pipe line 11, and 41 is a permeated water in the middle of the pipe line 11. A flow path switching means for draining, 43 is a flow path switching means for draining concentrated water in the middle of the pipeline 12, 52 is a water discharge means for discharging permeated water, and 53 is a water discharge means for discharging alkaline water.

  A method of water discharge of the potable water production apparatus according to the third embodiment will be described with reference to FIG. The drinking water production apparatus of the present invention is a state in which a predetermined amount of water is stored in all the water storage means, and the permeated water level in the water storage means 21 is higher than the pipeline 11 on the downstream side of the water storage means 21, The water level of the concentrated water in the water storage means 23 is operated in a state higher than the pipe 12 on the downstream side of the water storage means 23, and the user selects the water that the user wants to discharge. Water is discharged from different water discharge means.

  When the user selects to discharge permeated water, the channel 13 is closed by the channel opening / closing means 31 and 33, and the channel 11 is opened by the channel opening / closing unit 32. The permeated water flows out of the water storage means 21, is transferred through the pipe 11, and is discharged by the water discharge means 52.

  When the user selects to discharge alkaline water, the channel 13 is opened by the channel opening / closing means 31 and 33, and the channel 11 downstream of the communicating portion with the channel 13 is closed by the channel opening / closing unit 32. . The permeate flows out of the water storage means 21 and is transferred through the pipe 11. The concentrated water flows out of the water storage means 23 and is transferred through the pipe 12, and is electrolyzed by the electrolyzer 2 into alkaline water and acidic water. The alkaline water is transferred through the pipe 13, merged with the permeated water, and discharged by the water discharge means 53. Acidic water is drained from line 14.

  The mixing ratio of the alkaline water and the permeated water may be controlled by the flow path opening / closing means 31 or may be controlled by the flow path switching means 41, 43. You may adjust the production amount of alkaline water with the electrolyzer 2. Although not shown in the figure, a means for adjusting the flow rate may be provided and controlled.

  The flow path switching means 31 may be in the middle of the pipeline 12.

  Although the water storage method is not limited to this, an example will be described with reference to FIG. The amount of water stored in the water storage means 21 and 23 is kept within a predetermined range. That is, when any one of the permeated water and the concentrated water storage amount falls below the predetermined range, the raw water passes through the pipe line 10 and is supplied to the reverse osmosis membrane 1 to be divided into the permeated water and the concentrated water. The permeated water is transferred through the pipe 11 and stored in the water storage means 21. The concentrated water is transferred through the pipe 12 and stored in the water storage means 23. When the amount of water stored in all the water storage means reaches a predetermined amount, the supply of raw water is stopped.

  If the amount of concentrated water in the water storage means 23 has not reached a predetermined amount even though the permeated water in the water storage means 21 has reached a predetermined amount, the supply of raw water is continued and the generated permeated water is Drain from the channel switching means 41. Similarly, when the amount of the permeated water in the water storage means 21 has not reached the predetermined amount even though the amount of the concentrated water in the water storage means 23 has reached the predetermined amount, the supply of the raw water is continued. The produced concentrated water is drained from the flow path switching means 43.

  The flow path switching means 43 may not be provided. In this case, when excess concentrated water is generated, the flow path is switched from the pipe line 14.

  A fourth embodiment of the potable water production apparatus of the present invention will be described with reference to the block diagram of FIG. In FIG. 6, 1 is a reverse osmosis membrane, 2 is an electrolysis device that generates acidic water and alkaline water by electrolysis, and 10 is a tube for supplying raw water such as tap water and well water to the reverse osmosis membrane 1. A passage 11 is a first conduit for transferring the permeated water that has passed through the reverse osmosis membrane 1, and 12 is a second conduit for transferring the water that has not permeated the reverse osmosis membrane 1, that is, concentrated water, 13 Is a third conduit for transferring alkaline water generated by the electrolyzer 2, 14 is a fourth conduit for discharging acidic water generated by the electrolyzer 2, and 21 is in the middle of the first conduit 11. First water storage means for storing a certain permeated water, 23 is a second water storage means for storing concentrated water in the middle of the second pipe line 12, and 32 is a downstream of the communication part with the pipe line 13 The channel opening and closing means 33 for opening and closing the pipeline 11 on the side, 33 is the pipeline 13 on the downstream side of the communicating portion with the pipeline 11 A channel opening / closing means for opening and closing, 41 is a channel switching means for draining permeated water in the middle of the pipeline 11, 43 is a channel switching means for draining concentrated water, and 52 is a water discharging means for discharging permeated water. , 53 is a water discharge means for discharging alkaline water, 61 is a pump for transferring permeated water downstream of the water storage means 21, and 63 is a pump for transferring concentrated water downstream of the water storage means 23.

  A water discharge method of the potable water production apparatus according to the fourth embodiment will be described with reference to FIG. The potable water production apparatus of the present invention is operated in a state where a predetermined amount of water is stored in all the water storage means, and when the user selects the water to be discharged, the control device in the apparatus works and is selected. Water is discharged from different water discharge means.

  When the user selects to discharge permeated water, the channel 11 is opened by the channel opening / closing means 32, and the channel 13 is closed by the channel opening / closing unit 33. The permeated water is transferred from the water storage means 21 by the pump 61 and discharged from the water discharge means 51.

  When the user chooses to discharge alkaline water, the flow path opening / closing means 32 closes the pipe 11 on the downstream side of the communication portion with the pipe 13, and the flow path opening / closing means 33 opens the pipe 13. The permeated water is transferred from the water storage means 21 through the pipe 11 by the pump 61. Alkaline water is transferred from the water storage means 23 by the pump 62 and electrolyzed into alkaline water and acidic water by the electrolyzer 2. The alkaline water is transferred through the pipe 13, merged with the permeated water, and discharged by the water discharge means 53. Acidic water is drained from line 14.

  The mixing ratio of the alkaline water and the permeated water may be controlled by adjusting the flow rate with the pumps 61 and 63, or may be controlled with the flow path switching means 41 and 43. You may adjust the production amount of alkaline water with the electrolyzer 2. Although not shown in the figure, a means for adjusting the flow rate may be provided and controlled. Although not shown in the figure, a means for adjusting the flow rate may be provided and controlled.

  The permeated water and alkaline water discharging means may be common as shown in FIGS. 1 and 4, or the permeated water is different from the water discharging means 52 and the alkaline water is different from the water discharging means 53 as shown in FIGS. However, when water is discharged using another water discharging means, unselected water such as the channel opening / closing means 32 and 33 is discharged from the water discharging means before each water discharging means. Means to prevent spillage are needed.

  In the structure using a pump as shown in FIG. 4 and FIG. 6, water can be transferred even if the pipe is above the water level in the water storage means, so the design of the position of the pipe and the water storage means is free. There is an advantage that can be done.

  The water outlet may have a function of a metering valve that stops water after discharging a certain amount.

  In order to prevent bacteria and the like from propagating in the apparatus, the water stored in the water storage means may be drained at predetermined intervals by control with a clock or a timer.

  Means for detecting the use status may be provided in the apparatus, and control for draining the water stored in the water storage means may be provided in accordance with the use frequency or amount used.

  A means for detecting the water quality such as pH and electrical conductivity of the water in the water storage means may be provided, and a control for discharging the water stored in the water storage means according to the water quality may be provided.

  In order to sterilize the water in the water storage means, an ultraviolet lamp or the like may be provided.

  The apparatus may be provided with a clock or timer, and provided with means for notifying the maintenance time of the reverse osmosis membrane or the electrolysis apparatus according to the usage time.

  Means for detecting the number of times of use may be provided in the apparatus, and means for notifying the maintenance time of the reverse osmosis membrane or the electrolyzer may be provided according to the number of times of use.

  Means for detecting the amount of water flow may be provided in the apparatus, and means for notifying the maintenance time of the reverse osmosis membrane or the electrolyzer may be provided according to the amount used.

  Water purification means such as activated carbon or hollow fiber membrane may be provided in the pipe line 10 on the upstream side of the reverse osmosis membrane 1, thereby removing large molecules such as organic matter and colloidal components in the raw water. Has the effect of extending. Moreover, since the amount of impurities in the water treated by the reverse osmosis membrane is reduced, the concentration of impurities in the concentrated water to be electrolyzed is lowered, and further high purity alkaline ionized water can be obtained.

  Water purification means may be provided in the middle of the conduit 12 for transferring the concentrated water or the conduit 13 for transferring the alkaline water obtained by electrolyzing the concentrated water, thereby generating high-purity alkaline ionized water.

  You may use the acidic water produced | generated with the electrolyzer for washing | cleaning of a reverse osmosis membrane and a pipe line.

  You may use the alkaline water produced | generated with the electrolyzer for washing | cleaning and disinfection of a reverse osmosis membrane or a pipe line.

The potable water production apparatus of the present invention can be installed in a kitchen or the like and used for home use, or installed in a store or the like and used as a water supply device or a vending machine.

It is a 1st block diagram which shows the drinking water manufacturing apparatus of this invention. It is a graph which shows the electrical conductivity of tap water, concentrated water, and permeated water. It is a graph which shows the relationship between the electric conductivity of water, and the electric power required for electrolysis. It is a 2nd block diagram which shows the drinking water manufacturing apparatus of this invention. It is a 3rd block diagram which shows the drinking water manufacturing apparatus of this invention. It is a 4th block diagram which shows the drinking water manufacturing apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Reverse osmosis membrane 2 ... Electrolyzer 10 ... Pipe line for supplying raw | natural water 11 ... 1st pipe line for transferring permeated water 12 ... 2nd pipe line for transferring concentrated water 13 ... Third pipe for transferring alkaline water 14 ... Fourth pipe for draining acidic water 21 ... Water storage means for storing permeated water 22 ... Water storage means for storing alkaline water 23 ... Water storage means 31 for storing the concentrated water 31... Channel opening / closing means for opening and closing the pipe line 13 between the communication part between the water storage means 22 and the pipe line 32... Downstream of the communication part with the pipe lines 13 and 14. Channel opening / closing means 33 for opening and closing the pipe line 11... Channel opening / closing means for opening and closing the pipe line 13 on the downstream side of the communicating part with the pipe line 41... Channel switching means for draining permeated water 42. Channel switching means for draining water 43 ... Flow for draining concentrated water Switching means 51 ... Water discharging means for discharging permeated water and alkaline water 52 ... Water discharging means for discharging permeated water 53 ... Water discharging means for discharging alkaline water 61 ... Pump for transferring permeated water downstream of the water storing means 21 62 ... Water storage Pump for transferring alkaline water downstream of the means 22 63... Pump for transferring concentrated water downstream of the water storage means 23

Claims (4)

Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the third pipeline;
Flow path opening and closing means for opening and closing the third pipe line downstream of the second water storage means,
The third pipe is communicated with the first pipe on the downstream side of the flow path opening and closing means;
The control means includes
When permeate is selected by the selection means, the third conduit is closed by the flow path opening and closing means,
When alkaline water is selected, the third pipe is opened by the flow path opening / closing means.
Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the third pipeline;
A first pump in the middle of the first conduit downstream of the first water storage means;
A second pump in the middle of the third pipeline downstream of the second water storage means;
The third conduit communicates with the first conduit downstream of the second pump;
The control means includes
When permeate is selected by the selection means, the first pump is driven,
When alkaline water is selected, the first and second pumps are driven.
Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the second conduit;
Flow path opening and closing means for opening and closing the second or third pipe line on the downstream side of the second water storage means,
The third conduit communicates with the first conduit;
The control means includes
When permeate is selected by the selection means, the second or third pipe is closed by the flow path opening / closing means,
When alkaline water is selected, the second and third pipes are opened by the flow path opening / closing means.
Water supply means for supplying raw water;
A reverse osmosis membrane provided on the downstream side of the water supply means;
A first conduit for transferring the permeated water that has passed through the reverse osmosis membrane;
A second conduit for transferring concentrated water concentrated by the reverse osmosis membrane;
An electrolyzer that communicates with the second conduit and generates acidic water and alkaline water by electrolysis;
A third conduit for transferring alkaline water produced by the electrolyzer;
A fourth conduit for draining acidic water produced by the electrolyzer;
A selection means for selectively allowing permeated water and alkaline water discharge;
Control means for controlling the type of water discharge selected by the selection means;
First water storage means provided in the middle of the first pipeline;
Second water storage means provided in the middle of the second conduit;
A first pump in the middle of the first conduit downstream of the first water storage means;
A second pump in the middle of the second conduit downstream of the second water storage means;
The third conduit communicates with the first conduit;
The control means includes
When permeate is selected by the selection means, the first pump is driven,
When alkaline water is selected, the first and second pumps are driven.

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