JP2009297696A - Method and device for preparing sterilized water containing carbonic acid gas - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a device possessing an electrical control part for preparing sterilized water containing hypochlorous acid or chlorine dioxide as a main component is often installed at an undesirable place where the device is dewed with condensate or splashed with water because the place of using such sterilized water is mostly located at such an undesirable place although installation of the device in such an undesirable place is not desirable because the device has an electrical control part, and provide a device not having the electric control part. <P>SOLUTION: In a method for preparing sterilized water containing weak acidic hypochlorous acid or chlorine dioxide as a main component by mixing sodium hypochlorite or sodium chlorite with water and then mixing carbonic acid gas therein without any electrical control part, the amounts of sodium hypochlorite and sodium chlorite added, and the amount of carbonic acid gas mixed are automatically controlled corresponding to change of a flow rate of a main fluid so that chlorine and carbonic acid can be kept at a predetermined concentration even when the amount of the sterilized water discharged changes. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method and apparatus for producing sterilizing water containing hypochlorous acid or chlorous acid as a main component.

  The present invention relates to a method and an apparatus for knowing generation of weakly acidic diluted sterilized water by mixing carbon dioxide with sodium hypochlorite or diluted water of sodium chlorite.

  The present invention relates to a method and a technique for producing diluted sterilized water having a substantially constant chlorine concentration and pH value even when a flow rate change of diluted water occurs without using electric control.

  At present, it is widely known that hypochlorous acid or sterilized water containing chlorous acid as a main component is harmless to the human body and has an excellent sterilizing effect. Hypochlorous acid is contained in a sodium hypochlorite aqueous solution in which sodium hypochlorite is diluted with water to have a free chlorine concentration of about 200 ppm and a pH value of about 8.6. It has been known for a long time that the ratio of hypochlorous acid increases by lowering the pH value to make it a weak acid and the pH value becomes almost 100% in the vicinity of 5.

  As an example of a method of producing sterilizing water mainly composed of hypochlorous acid or chlorous acid, a method of mixing an aqueous solution of sodium hypochlorite or an aqueous solution of sodium chlorite with an acidic aqueous solution such as hydrochloric acid is known. Yes.

  As another example of a method for producing sterilizing water containing hypochlorous acid as a main component, a method of directly electrolyzing a hydrochloric acid aqueous solution is known. Furthermore, a method of generating a hypochlorous acid aqueous solution on the positive electrode side by injecting and electrolyzing a sodium chloride aqueous solution into an electrolytic cell having a diaphragm between the positive electrode and the negative electrode, and hydrochloric acid and sodium chloride There is also known a method of directly electrolyzing a mixed aqueous solution.

  In addition, as a method of using the sterilized water generated by the above method, it is generated by mixing a sodium hypochlorite aqueous solution and an acidic aqueous solution with a dedicated device, or generating sterilized water with a dedicated electrolyzer, A method is known in which sterilized water discharged from the apparatus is taken out from a stop valve or a faucet.

Problems to be solved by the invention

  The method of producing sterilized water by mixing sodium hypochlorite aqueous solution or sodium chlorite aqueous solution with acidic aqueous solution has the advantage that sterilized water can be easily produced, but it is difficult to control the amount of acidic aqueous solution to be mixed. If the amount of the acidic aqueous solution is as large as possible, the pH value is suddenly lowered to enter the gasification region, and chlorine gas or chlorine dioxide gas is generated.

  Because of these problems, disinfectants and bleaching agents containing sodium hypochlorite that are generally available on the market are marked with a caution that prohibits their use with acids. Therefore, this method requires precise chemical solution addition control.

  In addition, an aqueous solution of hypochlorous acid is generated on the positive electrode side by electrolyzing the aqueous hydrochloric acid solution or injecting and electrolyzing the aqueous solution of sodium chloride into an electrolytic cell with a diaphragm between the positive and negative electrodes. And a method of directly generating electrolysis of a mixed aqueous solution of hydrochloric acid and sodium chloride to produce it at a pH value of about 5 with the highest content ratio of hypochlorous acid. Actually, the actual condition is that the pH value is set to about 7 and the electrolysis conditions are controlled with a certain range.

  On the other hand, as a method of using the sterilized water generated by the above method, a sodium hypochlorite aqueous solution and an acidic aqueous solution are mixed by a dedicated device, or sterilized water is generated by a dedicated electrolyzer, In order to take out a desired amount of sterilized water discharged from the apparatus, it is common to take it out through a flow rate adjusting valve, a stop valve, or a faucet.

  In that case, the amount of sterilizing water discharged from the device may fluctuate constantly, become extremely small, or even be stopped. There is a problem that the concentration and pH value of the generated sterilizing water become unstable. Therefore, it is necessary to provide a water storage tank such as an accumulator for the generated sterilized water, which causes a problem in terms of cost and equipment.

  In addition, each method requires delicate adjustments that make full use of electric control, and is not suitable for environments where condensation occurs at high temperature and high humidity, or where water is splashed. Costs such as a sealed structure.

Means for solving the problem

  The present invention proposes a method and apparatus that automatically adjusts the chlorine concentration and pH according to the amount of sterilizing water discharged from the apparatus without using electrical control, even if the amount of sterilized water discharged from the apparatus changes.

  Specifically, it has a chlorine concentration by mixing sodium hypochlorite or sodium chlorite with water, which is the main fluid, and carbon dioxide is mixed with water of the main fluid, or hypochlorous acid. A method of adjusting the pH of the diluted sterilized water by mixing carbon dioxide with the diluted sterilized water mixed with sodium or sodium chlorite is used. A special mixer that automatically adjusts the flow rate of the fluid is used for the sodium hypochlorite or sodium chlorite mixing and carbon dioxide mixing section.

  Here, carbon dioxide gas is highly effective as sterilizing water and has interference at pH 5 to 6, and unlike the above-mentioned hydrochloric acid mixing, the pH does not fluctuate greatly due to a slight change in the mixing amount. Convenient and safe.

  The special mixer is provided with a variable throttle part in the flow path of the main fluid so that the opening area of the throttle part is automatically adjusted so that the pressure difference before and after the throttle does not change due to the flow rate change of the main fluid. The flow rate of the main fluid and the flow rate of the second fluid are measured by using a special moving plate that moves in a straight line and changing the opening area of the supply pipe of the second fluid in conjunction with the amount of movement of the moving plate. A method to keep the ratio constant is proposed.

  That is, when the flow rate of the main fluid is small, the moving amount of the moving plate is small, and therefore the area of the second fluid supply pipe opening is small and the flow rate of the second fluid is small. When the flow rate of the main fluid increases, the pressure difference increases when the opening area of the throttle portion remains small. Therefore, a mechanism is used that automatically increases the cross-sectional area of the throttle portion so as not to increase the pressure difference.

  Since the moving amount of the moving plate increases when the cross-sectional area of the throttle portion is increased, the opening area of the second fluid supply pipe increases and the flow rate of the second fluid also increases. As a result, the flow rate of the second fluid automatically increases as the flow rate of the main fluid increases. Detailed principles will be described in the embodiments of the present invention.

  Therefore, in the present invention, the use environment is not selected because the electrical control unit is not used in mixing sodium hypochlorite or sodium chlorite into water or mixing carbon dioxide.

  In addition, a predetermined amount of sodium hypochlorite or sodium chlorite and carbon dioxide is mixed according to the flow rate of the main fluid water, so faucets and manual valves located downstream and upstream of the device. Thus, even if the amount of water discharged from the diluted sterilized water is adjusted, it is possible to always obtain diluted sterilized water having a constant chlorine concentration and pH.

  FIG. 12 shows an exemplary embodiment of the present invention. The main fluid water is supplied from the water supply pipe 104, and the special mixers 101 and 102 are provided at the tip thereof. The mixer 101 is a mixer that mixes sodium hypochlorite with the main fluid at a constant ratio, and the mixer 102 is a mixer that mixes carbon dioxide gas with the main fluid at a constant ratio.

  A tank 105 for storing sodium hypochlorite is a sealed tank, and pressure is applied from a carbon dioxide gas cylinder 107 through a pressure regulator 108 through a carbon dioxide supply pipe 111.

  Further, a pipe line 106 through which sodium hypochlorite is supplied to the mixer 101 by the pressure of carbon dioxide gas from the tank 105 is provided.

  Further, a pipe line 109 for supplying carbon dioxide gas from a carbon dioxide gas cylinder 107 through a pressure regulator 108 is connected to the mixer 102. A stirrer 103, commonly called a static mixer, is connected downstream of the mixer 102, and has a faucet 110 downstream thereof. Details of the mixers 101 and 102 will be described later in detail.

  Here, when the faucet 110 is opened and the sterilizing water is discharged, the water that is the main fluid is supplied from the water supply conduit 104. At this time, sodium hypochlorite in a preset ratio is mixed according to the flow rate of the main fluid flowing through the mixer 101, and diluted sterilized water having a constant chlorine concentration flows into the pipe 112.

  Next, in accordance with the amount of diluted sterilized water sent from the pipe line 112 to the mixer 102, carbon dioxide gas at a preset ratio is supplied and mixed from the carbon dioxide gas cylinder 107. The diluted sterilized water mixed with carbon dioxide gas passes through the pipe 113, and is stirred and mixed by the mixer 103 and discharged from the faucet 110.

  Increasing the amount of sterilized water discharged by raising the opening of the faucet 110 automatically increases the supply amount of sodium hypochlorite and carbon dioxide gas, and reducing the amount of sterilized water discharged by squeezing the faucet 110 The supply amount of sodium hypochlorite and carbon dioxide gas also automatically decreases, and the chlorine concentration and pH are kept almost constant without being affected by the amount of water discharged.

  Further, when the faucet 110 is completely tightened to stop the discharge of the sterilizing water, the flow rates of supplied sodium hypochlorite and carbon dioxide gas become zero.

  In FIG. 12, carbon dioxide gas is mixed after sodium hypochlorite is mixed, but the order may be reversed. Further, a manual valve may be used in place of the faucet 110, or the faucet 110 may be eliminated and the manual valve may be provided in any place of the pipe lines 104, 112, and 113.

  Moreover, although the stirrer 103 uses a static mixer, the stirrer 103 is made of a stirrer having a plurality of obstacles in the pipe line or a stirrer in which a flat plate provided with a plurality of holes is provided in a direction perpendicular to the flow. The structure is not particularly limited as long as the structure can be stirred with sodium hypochlorite or carbon dioxide mixed without sterilizing water flowing smoothly.

  In FIG. 12, the faucet 110 is directly provided downstream of the stirrer 103, but an accumulator or a tank may be provided downstream of the stirrer 103. Furthermore, the sodium hypochlorite in the above description may be sodium chlorite.

  In FIG. 12, the pressure of carbon dioxide gas is applied to the tank 105 storing sodium hypochlorite via the pressure regulator 108, but another pressure regulator is prepared. A pressure applied to the tank 105 may be set separately from the pressure of the carbon dioxide gas supplied to the mixer 102 (not shown). By adjusting the pressure applied to the tank 105, the ratio of sodium hypochlorite mixed in the main fluid in the mixer 101 can be adjusted.

  Next, details of the mixers 102 and 103 will be described. In the following description, the main fluid is water supplied from the water supply conduit 104 shown in FIG. 12, and the second fluid is sodium hypochlorite or carbon dioxide.

  1 and 2 show an exemplary embodiment of a mixer. A movable plate 3 made of an elastic material such as rubber is sandwiched and fixed between the case 1 and the case 2. The moving plate 3 has a conical protrusion 4, and a shaft 6 is fixed at the center thereof. The protrusion 4 of the moving plate 3 is pressed against the entrance of the hole 7 provided in the case 1 by a spring 5.

  At that time, the tapered portion 8 at the tip of the shaft 6 is in a state of completely closing the entrance of the hole 9. At this time, the conduit 10 is a main fluid supply conduit, and the conduit 11 is a main fluid discharge conduit. The pipe 12 is a second fluid supply pipe, and the pipe 13 is a second fluid discharge pipe.

  The shaft 6 is provided with a seal member 14 for separating the main fluid and the second fluid. Further, the space 15 formed by the case 2 and the moving plate 3 and the hole 7 are communicated with each other by a communication pipe 16 provided in the shaft 6.

  The second fluid discharge pipe 13 is connected to the main fluid discharge pipe 11. Here, the second fluid discharge conduit 13 may be connected to the main fluid supply conduit 10.

  Next, the principle will be described. FIG. 1 shows a state in which the flow rate of the main fluid is zero, the protrusion 4 substantially closes the hole 6, the tapered portion 8 completely closes the hole 9, and the second fluid does not flow. It is kept in a state.

  Here, it is desirable that the protrusion 4 completely closes the entrance of the hole 7 while the tapered portion 8 completely closes the hole 9, but the protrusion 4 does not necessarily completely close the entrance of the hole 7. It is not necessary to be out. Further, the protrusion 4 and the tapered portion 8 may be an elastic body, and the entrance of the hole 7 and the entrance of the hole 9 may be an elastic body.

  In this state, since the valve and the faucet are closed upstream of the main fluid supply pipe 10 or downstream of the main fluid discharge pipe 11, the pressure in the space 15 communicating with the space 17 and the hole 7 is reduced. In this state, the movable plate 3 is pushed down by the force of the spring 5. Incidentally, the pressure in the space 15 is always the same as the pressure in the hole 7 by the communication pipe 16 provided in the shaft 6.

  Here, when a valve or a faucet that stops the main fluid is opened, the pressure in the space 17 becomes higher than that in the space 15 (inside the hole 7), and the main fluid starts to flow by pushing up the moving plate 3. Thereby, the taper part 8 leaves | separates from the hole 9, and a 2nd fluid also begins to flow. At this time, when the opening of the faucet or valve is increased and the flow rate of the main fluid is increased, the moving plate 3 is further raised to keep the pressure difference between the space 17 and the space 15 constant, and the tapered portion 8 is further raised. Therefore, the gap between the hole 9 and the tapered portion 8 is increased, and the flow rate of the second fluid is also increased.

  Conversely, when the flow rate of the main fluid is reduced, the moving plate 3 is lowered, the gap between the tapered portion 8 and the hole 9 is reduced, and the flow rate of the second fluid is also reduced. As described above, when the flow rate of the main fluid is changed, the flow rate of the second fluid is automatically changed. Here, the amount of change of the second fluid is adjusted by the angle of the tapered portion 8 at the tip of the shaft 6.

  3 and 4 show a second embodiment of the present invention. In this embodiment, instead of the communication pipe 16 that connects the space 15 and the hole 7 in the first embodiment, the main fluid discharge pipe 11 and the space 15 are connected by the communication pipe 18. In this case, the same function as in the first embodiment is performed.

  Next, a third embodiment will be described with reference to FIGS. This uses the moving plate 19 instead of the moving plate 3 and does not have the protrusion 4. Further, the spring 5 is eliminated, and the moving plate 19 is pressed against the entrance of the hole 7 by the elasticity of the moving plate 9.

  In this case, since the protrusion 4 is not provided, even if the flow rate of the main fluid increases, the moving amount of the moving plate 19 is small and cannot follow a minute change in the flow rate, and is suitable for rough adjustment. . However, the method using the elasticity of the moving plate without using the spring 5 can be applied to the above-described embodiments shown in FIGS.

  Next, still another embodiment will be described with reference to FIGS. This is a state in which the moving plates 20 and 21 are slightly connected at the outer periphery without completely separating the spaces 15 and 17. In this case, the main fluid supplied to the space 17 from the supply pipe 10 flows slightly into the space 15 through the outer peripheries of the moving plates 20 and 21. However, if the amount is very small, it is a big problem in operation. It will not be.

  The embodiment shown in FIGS. 7 and 8 is similar to the embodiment shown in FIGS. 1 to 4, in which the protrusions 4 are provided on the moving plate 20. The embodiment shown in FIGS. 5 and 6, the movable plate 21 does not have the protrusion 4.

  Here, as described above, it is desirable that the protrusion 4 and the movable plates 19 and 21 completely block the entrance of the hole 7 in a state where the tapered portion 8 completely blocks the hole 9. The protrusion 4 and the moving plates 19 and 21 do not necessarily need to completely block the entrance of the hole 7. Further, the protrusion 4 and the tapered portion 8 may be an elastic body, and the entrance of the hole 7 and the entrance of the hole 9 may be an elastic body.

  Further, as shown in FIG. 11, there is a flange portion 22 with a large diameter at the tip of the shaft 6, the inlet of the hole 9 has an inclination, and when the shaft 6 is pressed against the inlet of the hole 9, When the outer periphery hits the inclined portion of the inlet of the hole 9 and the pressure of the second fluid is applied to the upper surface of the flange portion 22, the flange portion 22 is strongly pressed against the inclined portion of the inlet of the hole 9. If the inlet is completely blocked, the second fluid does not leak when the flow rate of the main fluid becomes zero, which is even better.

  At this time, it is further preferable that the inclined surface of the inlet of the flange portion 22 or the hole 9 is an elastic body. The flange portion 22 may be attached to the shaft 6 as a separate component from the shaft 6. Further, the lower surface of the flange portion 22 may have the same inclination as the inclination of the inlet of the hole 9 or a slight inclination.

  5 to 10, the space 15 and the hole 7 are communicated by a communication pipe 16 provided in the shaft 6, but may be communicated by a communication pipe 18 as shown in FIGS. 3 and 4. .

The invention's effect

  By carrying out the present invention, alkaline sodium hypochlorite aqueous solution or sodium chlorite aqueous solution is used to adjust sterilized water or chlorine dioxide mainly composed of weakly acidic hypochlorous acid by adjusting the pH of carbon dioxide gas. It becomes sterilizing water having a main component, and the sterilizing effect can be dramatically increased without adding an acidic aqueous solution.

  Furthermore, since it does not have an electrical control unit, it is possible to make a device that does not require any maintenance environment and that requires little maintenance, and can be made inexpensively.

  In addition, the chlorine concentration and pH can be kept constant without being affected by the amount of sterilizing water discharged, and by stopping the sterilizing water discharge, sodium hypochlorite and sodium chlorite The supply of carbon dioxide gas can be automatically stopped completely, and an easy-to-use and safe device can be realized.

A sectional view of a typical embodiment of a mixer is shown (when main fluid is stopped). A sectional view of a typical example of a mixer is shown (when main fluid is discharged). Sectional drawing of 2nd Example of a mixer is shown (at the time of a main fluid stop) Sectional drawing of 2nd Example of a mixer is shown (at the time of main fluid water discharge) Sectional drawing of 3rd Example of a mixer is shown (at the time of a main fluid stop) Sectional drawing of 3rd Example of a mixer is shown (at the time of main fluid water discharge) Sectional view of another embodiment of the mixer is shown (when main fluid is stopped) Sectional drawing of another Example of a mixer is shown (at the time of main fluid discharge) Sectional drawing of another Example of a mixer is shown (at the time of a main fluid stop) Sectional drawing of another Example of a mixer is shown (at the time of main fluid water discharge) Another embodiment of the second fluid flow rate adjustment unit is shown. An exemplary embodiment of the present invention is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case, 2 Case, 3 Moving plate 4 Projection part, 5 Spring, 6 Shaft 7 Hole 8 Taper part, 9 hole, 10 Main fluid supply pipe 11 Main fluid discharge pipe, 12 Second fluid supply pipe Path 13 second fluid discharge pipe, 14 seal member 15 space, 16 communication pipe, 17 space, 18 communication pipe 19 moving plate, 20 moving plate, 21 moving plate, 22 flange part 101 mixer, 102 mixer, DESCRIPTION OF SYMBOLS 103 Stirrer 104 Water supply line, 105 Tank, 106 Pipe line 107 Carbon dioxide gas cylinder, 108 Pressure regulator, 109 Pipe line 110 Faucet, 111 Carbon dioxide gas supply line, 112 Pipe line 113 Pipe line

Claims (11)

In a method of diluting a sodium hypochlorite aqueous solution or a sodium chlorite aqueous solution with a main fluid such as tap water, well water or seawater and dissolving carbon dioxide to produce carbon dioxide-containing sterilized water having a predetermined chlorine concentration , Having two flow rate adjusters for the second fluid connected to a valve that moves up and down or left and right by increasing or decreasing the flow rate of the main fluid, and in the flow rate adjuster, sodium hypochlorite or sodium chlorite Automatically adjusts the flow rate of carbon dioxide and carbon dioxide gas according to the flow rate of the main fluid, and maintains the predetermined chlorine concentration and carbon dioxide concentration that are set in advance without using the electric control unit even if the flow rate of the main fluid fluctuates CO2 gas-containing sterilizing water production method In the second fluid flow rate adjusting unit, the space into which the main fluid flows is divided into two by a partition member, and the two spaces have separate flow paths communicating with the outlet side of the main fluid. The opening of the flow path through which the second fluid passes according to the amount of movement of the shaft connected to the partition member in conjunction with the movement of the partition member moves according to the flow rate of the main fluid. 2. The carbon dioxide-containing sterilizing water generating method according to claim 1, wherein the flow rate ratio of the main fluid and the second fluid is kept substantially constant by changing the ratio. In the second fluid flow rate adjusting unit, one space is divided into two by a partition member, and there is an inlet of the main fluid in one of the spaces, and the partition member is arranged in the direction of the outlet portion of the space. When the main fluid flows into the space, the partition portion is closed by the partition member or the tapered projection provided on the partition member. The partition member is further pushed up in the direction of increasing the opening area of the outlet portion of the space by being pushed up, the outlet portion being slightly opened, the main fluid flowing out from the outlet, and the flow rate of the main fluid being increased. And the other space of the two spaces communicates with the downstream of the main fluid outlet so that the movement of the partition member is not hindered, and the pressure of the second space Exit The pressure of the flow is kept the same, and the movement of the partition member moves the shaft connected to the partition member, thereby changing the cross-sectional area of the second fluid to change the main fluid and the second fluid. The method for producing sterilized water containing carbon dioxide gas according to claim 1, characterized in that the flow rate ratio of said fluid is kept substantially constant. 4. The method for producing sterilized water containing carbon dioxide gas according to claim 1, wherein when the main fluid stops, the flow path of the second fluid is completely blocked and the second fluid is also completely stopped. In an apparatus for diluting a sodium hypochlorite aqueous solution or a sodium chlorite aqueous solution with a main fluid such as tap water, well water or seawater and dissolving carbon dioxide to produce carbon dioxide-containing sterilized water having a predetermined chlorine concentration A moving body that moves when the flow rate of the main fluid increases in the flow path of the main fluid is widened, and is connected to the moving body to move the second fluid by moving the moving body. There are two valves that change the opening area of the gas, and the valves are provided in the second fluid sodium hypochlorite or sodium chlorite and carbon dioxide flow path, upstream or downstream of the valve. Carbon dioxide-containing sterilized water generating device, characterized by having an injection portion for injecting the second fluid into the main fluid 6. The apparatus for producing sterilized water containing carbon dioxide gas according to claim 5, further comprising a stirring section such as a static mixer downstream of the two injection sections. The valve for changing the opening cross-sectional area of the flow path of the second fluid has a hole in the center of the partition member, and has a shaft in a direction perpendicular to the surface of the partition member in one side of the partition member. The partition member is housed, and a space is formed on both sides of the partition member by the partition member. The space on the side where the shaft of the partition member is located is coaxial with the shaft and has a hole in the opposite direction to the partition member. The hole 7 has a diameter that allows the hole 7 to be substantially closed by the partition member when the partition member is pressed in the direction of the hole 7. A drain line 11 for the main fluid that communicates with the outside of the casing. Further, the hole 7 is located further toward the distal end of the hole 7 than the drain duct 11, and another duct that communicates with the outside of the case. A second fluid supply line 12 which is The bottom of the hole 7 further has a hole 9 coaxial with the hole 7 and having a diameter smaller than that of the hole 7. The hole 9 communicates with the outside of the case, and the hole 9 is a downstream pipe of the second fluid. The hole is connected between the shaft and the hole 7 at a position intermediate between the main fluid supply pipe 11 and the second fluid supply pipe, which are two pipes provided in the hole 7. 7 has a sealing member that divides the flow path into liquid nectar, and further has a shape in which the root is larger than the hole 9 at the tip of the shaft, and the cross-sectional area decreases in a tapered shape toward the tip and becomes narrower than the hole 9. Further, the case has a surface having the shaft of the partition member and another pipe line communicating with the outside in the space surrounded by the case, and the pipe line is connected to the main fluid supply side pipe line. The space on the side where no shaft is connected to the partition member is formed by the partition member and the case. 7. The apparatus according to claim 5, further comprising an elastic body such as a spring that has a conduit communicating from the space to the drainage conduit 11 of the main fluid, and further presses the partition member in a direction of the shaft. The carbon dioxide-containing sterilizing water generator described The partition member has a conical protrusion on the side of the shaft that is coaxial with the shaft, and when the partition member is pressed in the direction of the hole 7, the conical protrusion provided on the partition member causes a hole. The carbon dioxide-containing sterilized water generating device according to claim 7, wherein 7 is substantially closed. The valve for changing the opening cross-sectional area of the flow path of the second fluid is a plate-like elastic body having a hole in the center, and the shaft has a shaft perpendicular to the surface of the elastic body on the elastic body side in the hole. And having two cases that sandwich the elastic body in a liquid-tight manner and have spaces on both sides of the elastic body, respectively, and the case 1 on the side where the shaft of the elastic body is located is coaxial with the shaft. There is a hole 7 in a direction opposite to the elastic body, and the hole 7 has a diameter that allows the hole 7 to be substantially closed by the plate-like elastic body when the plate-like elastic body is pressed in the direction of the hole 7. In the middle of the hole 7, there is a drain line 11 for the main fluid communicating with the outside of the case 1 in a direction perpendicular to the hole 7, and the hole 7 is located closer to the tip of the hole 7 than the drain line 11. Then, it has the 2nd fluid supply conduit 12, which is another conduit communicating with the outside of the case 1, The bottom of the hole 7 further has a hole 9 coaxial with the hole 7 and having a diameter smaller than that of the hole 7, and the hole 9 communicates with the outside of the case 1, and the hole 9 is a downstream pipe of the second fluid. The hole is connected between the shaft and the hole 7 at a position intermediate between the main fluid supply pipe 11 and the second fluid supply pipe, which are two pipes provided in the hole 7. 7 has a seal member that divides the flow path into liquid nectar, and further has a shape in which the root is larger than the hole 9 at the tip of the shaft, and the cross-sectional area decreases in a tapered shape toward the tip and becomes narrower than the hole 9. Further, the case 1 has another pipe line communicating with the outside in the space surrounded by the elastic body and the case 1, and the pipe line is connected to the main fluid supply side pipe line, Further, the case 2 on the side where the shaft does not exist in the plate-like elastic body, the space formed by the elastic body and the case 2 It has a pipe line communicating with the drainage pipe 11 for fluid, and further has a structure in which the plate-like elastic body is pressed in the direction of the shaft by the elasticity of the plate-like elastic body, or the plate-like elastic body is attached to the shaft. It has a spring for pressing in a certain direction, The carbon dioxide containing sterilization water production device according to claim 5 and 6 characterized by things A conical protrusion provided coaxially with the shaft on the side of the plate-like elastic body on which the shaft is provided, and when the elastic body is pressed in the direction of the hole 7, the cone provided on the plate-like elastic body 10. The carbon dioxide-containing sterilizing water generating device according to claim 9, wherein the hole 7 is substantially closed by a projecting protrusion. Instead of the communication pipe that connects the partition member and the space on the side of the plate-like elastic body without the shaft and the drain pipe 11 for the main fluid, a communication path that connects the space on the side without the shaft and the hole 7 is provided. The carbon dioxide-containing sterilizing water generating device according to claim 7, wherein the device is provided inside the shaft.

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