KR20110041335A - System of suppling reduching water and sterilizing water in house - Google Patents

Abstract

PURPOSE: A system for supplying regenerated water and sterilized water in a building is provided to self-sterilize bacteria and virus based on acidic sterile water by continuously implementing a submerged discharging process with respect to tap water. CONSTITUTION: A system for supplying regenerated water and sterilized water in a building is composed of a water introducing pipe(10), a water supplying pipe(30), a water tank, a water regenerating unit(50), and a water sterilizing unit(60). The water supplying pipe is installed in a building and is in connection with the water introducing pipe. The water supplying pipe connects water tanks and supplies tap water. The water regenerating unit is installed at the entrance of the water supplying pipe. The water sterilizing unit is installed at a branched pipe(40).

Description

Indoor reduced and sterilized water supply system {SYSTEM OF SUPPLING REDUCHING WATER AND STERILIZING WATER IN HOUSE}

The present invention relates to an indoor reduced water and sterilized water supply system, and more specifically, to an indoor reduced water and sterilized water supply system for supplying tap water supplied to an indoor faucet through an indoor water supply pipe to reduce and sterilized water through an underwater discharge. It is about.

As is well known, the indoor water supply system is configured to supply a tap water by connecting a plurality of indoor faucets through a water supply pipe installed indoors from an inlet pipe.

However, the tap water supplied to each indoor faucet through the conventional indoor water supply system is still supplied with pretreated and sterilized water from the water works, but the tap water still has various kinds of sterilization, viruses, bacteria, molds generated during the supply process. The bacteria will be present.

Therefore, it is possible to safely sterilize tap water supplied to indoor faucets without using additional chemicals, and also to safely sterilize germs, viruses, bacteria, fungi, etc. that live in washing water using tap water. The indoor reducing water and sterilizing water supply system capable of supplying sterilizing water having excellent sterilizing power is required.

An object of the present invention for solving the above problems is to provide an indoor reduced water and sterilized water supply system for supplying the tap water supplied to the indoor faucet through the indoor water supply pipe to reduce and sterilized water through an underwater discharge.

In the indoor reduced water and sterilized water supply system of the present invention for achieving the above object, in the indoor water supply system for supplying tap water by connecting a plurality of indoor faucets through a water supply pipe installed indoors from the inlet pipe, A reduction water supply unit installed in an indoor entrance of the water supply pipe and sterilizing tap water supplied to all the indoor faucets through primary underwater discharge, and then supplying reduced reduced water; And sterilizing water including hypochlorous acid through secondary underwater discharge to the reducing water supplied through the branch pipe, which is installed on branch pipes branched from the water supply pipe to connect some of the indoor faucets. Sterilizing water supply to make and supply; characterized in that comprises a.

The reducing water and the sterilizing water is formed in the inlet and the outlet at each end so as to be connected on the water supply pipe, the case having an inner receiving space between the inlet and the outlet; At least two discharge plates facing each other in a direction intersecting with a direction in which tap water flows in the inner accommodating space of the case; And a power supply unit connected to the discharge plate so that power can be supplied, and alternately applying a discharge voltage having a predetermined size to a pair of discharge plates adjacent to each other.

Here, the discharge plate is preferably formed with a platinum plating layer on the outer surface.

In addition, the reducing water is composed of two discharge plates are spaced apart from each other, it is preferable that the separation distance between the discharge plate is made within the range of 30mm to 50mm.

In addition, the sterilizing water is composed of 5 to 10 discharge plates which are spaced apart from each other, the interval between the discharge plates are installed to be spaced apart within the range of 0.8 to 1.2mmm. Each of the discharge plates is formed with a through hole formed through the 30 to 50 mesh, the through shape is preferably made of any one shape selected from triangular, square, rhombus and circular.

In addition, the water supply pipe may further include a chlorine content maintaining means for maintaining a constant chlorine content of the tap water supplied through the branch pipe.

Here, the chlorine content maintaining means may include a chlorine protective film is formed on the inner peripheral surface of the water supply pipe and the branch pipe, the chlorine protective film is preferably made of any material selected from epoxy or urea.

In addition, the chlorine content maintaining means is installed in the front end of the sterilizing water on the branch pipe, by measuring the chlorine content of the tap water supplied to the sterilizing water through the branch pipe, maintaining the chlorine content to maintain a constant chlorine content The chlorine retainer may include a chlorine storage tank for storing chlorine; A chlorine content measuring sensor for measuring the chlorine content of tap water flowing into the sterilizing water through the branch pipe; And a chlorine content of 0.4 mg / l to 0.7 mg / l of tap water supplied to the sterilizing water by inputting a predetermined amount of chlorine stored in the chlorine storage tank according to the chlorine content of the tap water measured by the chlorine content measuring sensor. And a chlorine content controller to maintain.

According to the indoor reducing water and sterilizing water supply system of the present invention, without the use of a separate sterilizing chemicals, the water flowing through the reducing and sterilizing water continuously generates water discharge to ionize the water molecules generated high sterilization power Acid bacteria including a hydroxyl group, oxygen anion, ozone, hydrogen peroxide, and hypochlorous acid have the effect of self-sterilizing bacteria, viruses, bacteria and fungi.

In addition, the indoor reducing and sterilizing water supply system of the present invention has a sterilizing strong hydroxyl group, oxygen anion, ozone, hydrogen peroxide, and hypochlorous acid, which are generated by the ionization of water through the water discharge of the reducing and sterilizing water groups. After that, it is reduced to non-toxic water again through a reduction period has the effect of preventing secondary human body damage that may be caused by this.

In addition, the indoor reduced water and sterilized water supply system of the present invention sterilizes tap water through primary water discharge using a reduced water group, and then supplies the reduced water reduced to non-toxic water to all indoor faucets, and sterilizes the washing water using sterilized water. By supplying the required indoor faucets in the continuous secondary water discharge to the sterilization water is made to extend the reduction period has the effect to be sterilized in the washing process of the wash by the sterilization water.

In addition, the reduced water and sterilizing water used in the indoor reducing and sterilizing water supply system of the present invention by applying a predetermined discharge voltage to a constant flow rate of tap water flowing through the case to generate an underwater discharge, high sterilization power It has an effect of continuously producing and supplying a hydroxyl group, an oxygen anion, ozone, hydrogen peroxide, hypochlorous acid and the like.

In addition, the reduced water and sterilizing water used in the indoor reduced water and sterilizing water supply system of the present invention by alternately applying different direct-current DC discharge voltage to two adjacent discharge plates constituting one discharge cell, contained in the tap water Foreign matter is stuck to the discharge plate has an effect that can prevent the formation of sludge.

In addition, the indoor reducing and sterilizing water supply system of the present invention by forming a chlorine protective film on the inner circumferential surface of the water supply pipe and branch pipe, or by maintaining a constant chlorine content of the tap water supplied to the sterilizing water using a chlorine retainer, through the underwater discharge By increasing the content of hypochlorous acid to be formed has the effect of further improving the sterilizing power of the sterilizing water.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a schematic diagram showing an indoor reducing and sterilizing water supply system according to a first embodiment of the present invention.

Referring to Figure 1, the indoor reduced water and sterilization water supply system of the present embodiment (1), the water supply pipe 30, the branch pipe 40, reducing water 50, sterilization water 60, and chlorine content It comprises a holding means (80).

The water supply pipe 30 refers to a pipe installed inside the building to supply tap water indoors through the meter 20 from the water supply pipe 10.

In addition, indoor faucets (ie, washing machine 73, boiler 74, toilet 75, sour 76, bath 77) for using the tap water from the water supply pipe 30 to the branch pipe 40. , Refers to a pipe branched to connect the wash basin 71 and the sink 72.

In order to explain in more detail the installation position of the sterilizing water dispenser 40 to be described later in this embodiment, the branch pipe 40 is defined as an independent component different from the water supply pipe 30, but in a broad sense, the branch pipe 40 ) Is also included in the water supply pipe 30 for supplying tap water indoors. Therefore, in the following, unless otherwise mentioned for the branch pipe 40, the water supply pipe 20 may be used as a generic name including the branch pipe.

The reduction water receiver 50 is installed in the indoor entrance of the water supply pipe 30 which is hypothesized to supply tap water from the water inlet pipe 10 to the indoor water through the meter 20, and supplies all the indoor faucets 70 described above. Tap water is sterilized through the first underwater discharge, and then reduced to water again to supply reduced water.

FIG. 2 is a side sectional view showing the reducing water group of FIG. 1.

Referring to FIG. 2, the reduction water receiver 50 of the present embodiment includes a first case 51, a first discharge plate 54, and a first power supply unit 55.

The first case 51 has an inlet 52 and an outlet 53 formed at both ends thereof so as to be connected on the water supply pipe 30, and has a predetermined capacity between the inlet 52 and the outlet 53. It is formed to have a receiving space.

In this embodiment, the first case 51 is formed with an internal receiving space having a predetermined capacity so that the flow rate of the reduced water supplied to each indoor faucet 70 can be supplied while maintaining approximately 3 l / min. It is preferable.

Here, when the capacity of the inner accommodating space of the first case 51 is too small, the supply flow rate of the reducing water supplied through the respective indoor faucets 70 is small, which makes the use uncomfortable, and accommodates the internal of the first case 51. If the capacity of the space is too large, there is a disadvantage that the discharge voltage used during underwater discharge becomes too large.

The first discharge plate 54 illustrates two flat discharge plates disposed to face each other in a direction intersecting with a direction in which tap water flows in the inner accommodating space of the first case 51 and spaced apart from each other.

Here, the first discharge plate 54 may be made of metals having high electrical conductivity. In particular, the surface of the first discharge plate 54 may be plated with platinum so that the boundary potential between water and the metal is low, and corrosion is prevented by water in the water. desirable.

The separation distance between the pair of first discharge plates 54 is preferably within a range of 30 mm to 50 mm. Here, when the separation distance between the first discharge plate 54 is less than 30mm, the flow rate resistance of the tap water flowing through the first case 51 increases, and when the distance exceeds 50mm, the first discharge plate 54 The separation distance between the two) is too far away has the disadvantage that the discharge voltage used is too large.

In addition, the first power supply unit 55 penetrates the upper side of the first case 51 to be connected to the first discharge plate 54 so as to be capable of supplying power to the first discharge plate 54 so that the plasma is connected between the pair of first discharge plates 54. The circuit is configured so as to alternately apply different peak DC discharge voltages to the two discharge plates for underwater discharge so that is generated.

The first power supply unit 55 has a magnitude of the discharge voltage supplied to the first discharge plates to have an optimum underwater discharge effect according to the flow rate of the tap water supplied into the first case 51 of the reducing water heater 50. The circuit is configured to control the.

Accordingly, the reducing water heater 50 is ionized by plasma in which water molecules of tap water introduced into the interior of the first case 51 through the inlet 52 are formed through the underwater discharge between the first discharge plates 54. a hydroxyl group (OH ^-) are generated as an oxygen anion (O ^-), ozone (O ^3), hydrogen peroxide (H ₂ O ₂₎ was first sterile tap water or the like, the first case the reduced water reduced to water molecules again Through the outlet 53 of the 51 to supply to the water supply pipe 30 and the branch pipe 40 for connecting the respective indoor faucets.

That is, anions generated by ionizing water molecules and hydroxyl groups (OH ⁻ ), oxygen anions (O ⁻ ), ozone (O ³ ), and hydrogen peroxide (H ₂ O ₂ ) generated by decomposition have instantaneous strong sterilizing power, It sterilizes various bacteria, viruses, bacteria and fungi in water, and removes heavy metals by oxidizing and breaks down the linkage of the constituent elements that make up chemicals such as pesticides and detergents. It will act to break down.

Formulas 1 to 4 below describe a series of processes in which the hydroxyl group, oxygen anion, ozone, and hydrogen peroxide are generated as the water molecules are ionized through an underwater discharge.

Meanwhile, the first power supply unit 55 alternates with the two first discharge plates 54 and applies a direct current discharge voltage to prevent foreign substances contained in the tap water from ionizing and sticking to prevent sludge from forming on the discharge plate. Do it.

In addition, the sterilizer 60 is installed on a branch pipe that is branched to connect some indoor faucets (i.e., this embodiment exemplifies being a washbasin or a sink) in which the sterilizing power of tap water is particularly required. The reduced water supplied through the branch pipe 40 is configured to supply sterilized water ionized with substances having high sterilizing power, including hypochlorous acid (HOCl), through secondary underwater discharge.

Figure 3 is a side cross-sectional view showing the sterilizing water of Figure 1, Figure 4 is an enlarged side cross-sectional view showing the discharge plate of the sterilizing water of Figure 3, Figure 5 is a front view showing the discharge plate of the sterilizing water of Figure 3 to be.

Referring to FIGS. 3 to 5, the sterilizing water heater 60 of the present embodiment includes a second case 61, a second discharge plate 64, and a second power supply unit 65.

Here, the inlet 62 and the outlet 64 are formed at both ends of the second case 61 so as to be connected to the branch pipe 40 connecting the wash basin and the sink, and the inlet 62 and the outlet ( It is formed to have a predetermined capacity of internal receiving space therebetween.

In the second case 61 of the present embodiment, the flow rate of the sterilizing water supplied to the wash basin 71 and the sink 72 is similar to that of the first case 51 constituting the reducing water receiver 50. This exemplifies that it is formed to be able to maintain approximately 3 l / min.

The second discharge plates 64 face each other in a direction intersecting with the direction in which the tap water flows in the inner accommodating space of the second case 61 and are installed in parallel with each other with a separation distance in the range of about 0.8 mm to 1 mm. It is preferable that it consists of two plate-shaped discharge plates.

In the present embodiment, six second discharge plates 64 of the sterilizing water heater 60 are arranged side by side with a distance of 1 mm from each other, and a pair of discharge plates 64a-64b-64c-64d adjacent to each other. It is exemplarily configured to form five discharge cells C1 to C5 between -64e-64f.

In addition, the second discharge plate 64 may be made of metals having high electrical conductivity similar to the first discharge plate 54 described above. In particular, the second discharge plate 64 may have a low boundary potential between water and the metal, and may prevent corrosion by water in the water. It is preferable that the surface is plated with platinum so as to be able to do so.

In addition, a plurality of through holes 67 are formed in the second discharge plate 64, and the through holes 67 increase the flow rate resistance of the tap water flowing through the second case 61 of the sterilizing water heater 60. It is formed to penetrate to form 30 to 50 mesh (nesh) to prevent.

In addition, the through hole 67 is an important variable that determines the discharge effect during underwater discharge, and may be formed in any one of triangular, square, rhombus, and circular shapes, and in particular, the circular and trapezoidal shapes improve the discharge effect. More effective.

In addition, the second power supply unit 65 directly directs different pole images from each other in succession to the pair of discharge plates 64a, 64b, 64c, 64d, 64e, and 64f that divide the respective discharge cells C1 to C5. It is configured to supply power alternately.

As described above, the second power supply unit 65 is optimal according to the flow rate of the tap water supplied into the second casing 61 of the reducing water heater 60, like the first power supply unit 55 of the reduction machine described above. The circuit is configured to control the magnitude of the discharge voltage supplied to the second discharge plates (64) to have an underwater discharge effect, by alternating each of the second discharge plates (64) and applying a pole DC voltage to each other, The materials contained in the tap water are ionized and stick together to prevent the formation of sludge on the discharge plate.

Accordingly, the tap water (ie, the reduced water) introduced into the second case 61 of the sterilizing water heater 60 passes through the respective discharge cells C1 to C5 that are continuously partitioned by the adjacent discharge plates 64. and after the five water discharge process more hydroxyl groups (OH ^-), oxygen anion (O ^-) is created and, ozone (O _3), hydrogen peroxide (H ₂ O ₂₎ and hypochlorous acid (HOCl), are ions, which causes It is possible to delay the period in which the resulting hydroxyl groups, oxygen anions, ozone, hydrogen peroxide, and hypochlorous acid are reduced back to water.

The sterilizing water heater 60 of this embodiment extends the reduction period (i.e., half-life) for which the sterilized water produced by ionizing water molecules to be returned to the water in its original state to a maximum of 25 minutes, thereby allowing hydroxyl, oxygen anion, ozone, hydrogen peroxide, and In addition to the second sterilization of tap water itself by hypochlorous acid, it is possible to sterilize germs on hands or foods even when washing hands through a sink or washing foods in a sink.

In particular, hypochlorite (HOCl), which has a high bactericidal effect, is produced by reacting with substances produced in the process of ionizing water molecules through an underwater discharge, which includes chlorine in tap water as shown in Equation 5.

Therefore, in order to increase the sterilization effect using the reduced water heater 50 and the sterilization water heater 60, chlorine content maintaining means is provided so that a certain amount of chlorine (Cl) is included in the tap water supplied through the water supply pipe 30. desirable.

In general, tap water supplied to households may be supplied to maintain 0.4 mg / l to 0.7 mg / l of chlorine (Cl) for sterilization and disinfection in any region or country.

However, the chlorine (Cl) component contained in the tap water is chlorine in the rust formed when rust is generated due to the aging of the water supply pipe 30 or the branch pipe 40 consisting mainly of cast iron pipe, galvanized pipe, or copper pipe Is attached to form sludge in the pipe, thereby reducing the chlorine content of tap water.

Therefore, in this embodiment, the chlorine content maintaining means 80 is applied on the inner circumferential surfaces of the water supply pipe 30 and the branch pipe 40 to prevent rust in the pipe, thereby maintaining a constant amount of chlorine introduced into the tap water from the water supply plant. It is illustrated that it is a chlorine protective film 81 that can be maintained.

6 is a side cross-sectional view showing a chlorine protective film of the water supply pipe and the branch pipe of FIG. 1.

As shown in FIG. 6, the chlorine protective film 81 is applied to the inner circumferential surface of the water supply pipe 30 and the branch pipe 40 using the cast iron pipe, the galvanized pipe, and the copper pipe to form a kind of rust prevention film. Do it.

Here, the chlorine protective film 81 is preferably made of any material selected from epoxy or urea applied in the pipe during regeneration of the old water supply pipe.

As an example. The chlorine protective film is rusted inside after using water supply and branch pipes for a certain period of time. It can be formed by removing foreign substances, and 3) applying and drying the polymer in the tube, and 4) applying epoxy or urea paint.

Accordingly, the indoor reduced water and sterilized water supply system according to the first embodiment of the present invention discharges the tap water supplied from the water inlet pipe 10 to the indoor water supply pipe continuously through the reduced water supply device 50, so that the water molecules sterilizing the excellent hydroxyl groups (OH ^-) are made as ionization, the oxygen anion (O ^-), ozone (O _3), hydrogen peroxide (H ₂ O ₂₎ and hypochlorous acid bacterium of the water inside with a (HOCl), viruses, bacteria or fungi After the first sterilization of the bacteria, the reduced water is reduced again with water to the washing machine (73), boiler (74), toilet bowl (75), shower (76), bathtub (77), wash basin (71), and sink (72) and Supply to the same indoor faucets 70.

In addition, the sterilizing water heater 60 is a part of the indoor faucet 70, especially the tap water supplied to the indoor faucet that requires sterilization, that is, the sink 71 or the sink 72 is discharged in the secondary water in the reduced water 60 ionize more molecules of water than a hydroxyl group to a fungicide role (OH ^-), oxygen anion (O ^-) is created and, ozone (O _3), hydrogen peroxide (H ₂ O ₂₎ and hypochlorous acid (HOCl), these are again By delaying the period of reduction to water, when washing the hand through the sink (71) or washing the food in the sink (72) so as to sterilize bacteria, viruses, bacteria or fungi on the hand or food.

In addition, by forming a chlorine protective film 81 in the water supply pipe 30 and the branch pipe 40, chlorine is electrodeposited by the rust generated in the pipe to prevent the chlorine content of the tap water is reduced, reducing water 50 And by increasing the content of hypochlorous acid generated through the discharge in the water in the sterilization water 60 can be further improved sterilization effect.

Hereinafter, the indoor reduced water and the sterilized water supply system according to the second embodiment of the present invention will be described with reference to the accompanying drawings, and the same reference numerals will be used to designate the same and similar components as the first embodiment. Is omitted.

7 is a schematic view showing an indoor reduced water and sterilized water supply system according to a second embodiment of the present invention, Figure 8 is an enlarged view showing an enlarged chlorine retainer of FIG.

Referring to FIGS. 7 and 8, in the indoor reduced water and sterilized water supply system 100 of the present embodiment, the chlorine content maintaining means 80 is branched from the branch pipe 40 as compared with the first embodiment. Is installed in the front end of the sterilizing water 60 in the phase, the chlorine retainer 180 to measure the chlorine content of the tap water supplied to the sterilizing water 60 through the branch pipe 40, to maintain the predetermined chlorine content For example).

The chlorine retainer 180 includes a chlorine storage tank 182, a chlorine content measuring sensor 181, and a chlorine content controller 183.

The chlorine storage tank 182 stores a certain amount of chlorine. The chlorine content measuring sensor 181 measures the chlorine content of the tap water supplied to the sterilizing water heater 60 through the branch pipe 40. In addition, the chlorine content stored in the chlorine storage tank 182 is added to the tap water according to the chlorine content measured by the chlorine content measuring sensor 181 to maintain the chlorine content of the tap water of 0.4mg / l to 0.7mg / l.

As described above, the indoor reducing water and sterilizing water supply system 100 of the present embodiment installs the chlorine retainer 180 on the branch pipe, and maintains the chlorine content of the tap water flowing into the sterilizing water tank 60 to maintain the sterilization water ( 60) has an effect of increasing the content of hypochlorous acid in the sterilizing water supplied to the wash basin 71 and the sink stage 72 to increase the sterilization effect.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the spirit and scope of the invention. And it goes without saying that they belong to the scope of the present invention.

1 is a schematic diagram showing an indoor reducing and sterilizing water supply system according to a first embodiment of the present invention.

FIG. 2 is a side sectional view showing the reducing water group of FIG. 1.

Figure 3 is a side sectional view showing the sterilizing water of Figure 1;

4 is an enlarged side cross-sectional view of the discharge plate of the sterilizing water receiver of FIG. 3.

FIG. 5 is a front view illustrating a discharge plate of the sterilizing water receiver of FIG. 3.

6 is a side cross-sectional view showing a chlorine protective film of the water supply pipe and the branch pipe of FIG. 1.

7 is a schematic diagram showing an indoor reduced water and sterilized water supply system according to a second embodiment of the present invention.

8 is an enlarged view illustrating an enlarged chlorine retainer of FIG. 7.

<Description of Main Reference Signs>

1, 100: indoor reduced water and sterilized water supply system

10: water pipe 20: meter

30: water supply piping 40: branch piping

50: reducing water phase 51: the first case

54: first discharge plate 55: first power supply unit

60: sterilizer 61: second case

64: second discharge plate 65: second power supply unit

70: indoor faucet 80: chlorine content maintaining means

81: chlorine shield 180: chlorine holder

181: chlorine content detection sensor 182: chlorine storage tank

183: chlorine content controller

Claims (14)

In the indoor water supply system for supplying tap water by connecting a plurality of indoor faucets through a water supply pipe installed indoors from the water supply pipe, A reduction water supply unit installed in an indoor entrance of the water supply pipe and sterilizing tap water supplied to all the indoor faucets through primary underwater discharge, and then supplying reduced reduced water; And Is installed on the branch pipes branched from the water supply pipe to connect some of the indoor faucets of the indoor faucet, to make sterilized water containing hypochlorous acid through the secondary water discharge to the reducing water supplied through the branch pipe Indoor reduced water and sterilizing water supply system comprising a sterilizing water supply. In claim 1, The reducing water group and the sterilizing water group, Inlets and outlets are respectively formed at both ends to be connected on the water supply pipe, Case having an inner receiving space between the inlet and outlet; At least two discharge plates spaced apart from each other in a direction intersecting with a direction in which tap water flows in the inner accommodating space of the case; And And a power supply unit connected to the discharge plate so that power can be supplied and alternately applying a discharge voltage having a predetermined size to a pair of discharge plates adjacent to each other. In claim 2, The discharge plate is an indoor reduced water and sterilized water supply system in which a platinum plating layer is formed on an outer surface. 4. The method of claim 3, The reduced water is an indoor reduced water and sterilized water supply system consisting of two discharge plates are spaced apart from each other. 4. The method of claim 3, The reducing water group, An indoor reducing water and sterilizing water supply system comprising a distance between the discharge plate is within the range of 30mm to 50mm. 4. The method of claim 3, The sterilizing water is indoor reducing water and sterilizing water supply system consisting of 5 to 10 discharge plates are installed spaced apart from each other. In claim 6, The sterilizing water is, The spacing between the discharge plate is installed within the indoor reduced water and sterilized water supply system spaced apart within the range of 0.8 to 1.2mmm. In claim 6, The sterilizing water is, Indoor discharge water and sterilized water supply system of the discharge plate is formed through the through 30 to 50 mesh. In claim 8, The through-hole is made of any one of the shape selected from triangular, square, rhombus and circular reducing water and sterilized water supply system. In claim 1, And chlorine content maintaining means for maintaining a constant chlorine content of the tap water supplied through the water supply pipe and the branch pipe. In claim 10, The chlorine content maintaining means, An indoor reduced water and sterilized water supply system comprising a chlorine protective film is formed on the inner peripheral surface of the water supply pipe and the branch pipe. In claim 11, The chlorine protective film Indoor reduced and sterilized water supply system consisting of any material selected from epoxy or urea. In claim 10, The chlorine content maintaining means, It is installed in the front end of the sterilizing water on the branch pipe, the indoor reduced water and sterilizing water including a chlorine holder to maintain a constant chlorine content by measuring the chlorine content of the tap water supplied to the sterilizing water through the branch pipe Water supply system. The method of claim 13, The chlorine holder, A chlorine storage tank for storing chlorine; A chlorine content measuring sensor for measuring the chlorine content of tap water flowing into the sterilizing water through the branch pipe; And The chlorine content of tap water supplied to the sterilizing water is maintained at 0.4 mg / l to 0.7 mg / l by adding a predetermined amount of chlorine stored in the chlorine storage tank according to the chlorine content of the tap water measured by the chlorine content measuring sensor. Indoor reduced water and sterile water feed water system comprising a chlorine content controller.

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