WO2020204046A1

WO2020204046A1 - Device for producing sodium hypochlorite diluted solution

Info

Publication number: WO2020204046A1
Application number: PCT/JP2020/014912
Authority: WO
Inventors: 広人甲田; 安廣甲田
Original assignee: 有限会社エー・ジー・アイ
Priority date: 2019-03-31
Filing date: 2020-03-31
Publication date: 2020-10-08
Also published as: JP2021119111A; JPWO2020204046A1; JP6872832B2

Abstract

[Problem] To provide a device for producing a sodium hypochlorite diluted solution, the device being capable of easily and quickly producing a sodium hypochlorite diluted solution that is effective in disinfecting, sterilization, infection prevention, deodorization, washing, cleaning, air freshening, etc., and which realizes reductions in both size and cost. [Solution] The problem described above is solved by a device 1 for producing a sodium hypochlorite diluted solution, the device comprising: a storage chamber 39 provided above a location at which a container 5 for diluted solution production is installed, and into which a sodium hypochlorite solution 60 is introduced and stored; a sub-storage chamber 80 attached to a bottom part of the storage chamber 39, and into which the sodium hypochlorite solution 60 naturally flows in a downward direction and is stored; a fixed amount chamber 56 that causes a prescribed amount of the sodium hypochlorite solution 60 to flow out from the sub-storage chamber 80 by using a first opening/closing valve 53, and that stores the predetermined amount of the sodium hypochlorite solution 60; and an injection part 45 that causes a prescribed amount of the sodium hypochlorite solution 60 to naturally flow downward from the fixed amount chamber 56 by using a second opening/closing valve 54, and injects the sodium hypochlorite solution 60 into the container 5.

Description

Sodium hypochlorite diluent generator

The present invention relates to a generator for a sodium hypochlorite diluent. More specifically, the present invention relates to a device for producing a diluted sodium hypochlorite solution, which is effective for sterilization, sterilization, infection prevention, deodorization, cleaning, cleaning, deodorization and the like.

Sodium hypochlorite diluted solution is used in food factories, kitchens, hospitals, welfare facilities for the elderly, nursery schools, etc. as an effective treatment solution for sterilization, sterilization, infection prevention, deodorization, cleaning, cleaning, deodorization, etc. (See Non-Patent Document 1). In the same document, for example, in-pipe sterilization in food factories and kitchens, cleaning sterilization, space sterilization, hand washing in hospitals and welfare facilities for the elderly, equipment sterilization after filth treatment, pubic care after diaper replacement, cleaning It is described that it is used for environmental sterilization at the time, sterilization of sand fields in nursery schools, sterilization of baby bottles and tableware, etc. The document also states that in terms of the environment, it is also used for environmental deodorization of welfare facilities and psychiatric wards, and deodorization of paper mills.

Furthermore, the same document describes the effectiveness of the sodium hypochlorite diluent. Specifically, it inactivates norovirus substitute cat calicivirus, influenza virus, herpesvirus, adenovirus, coxsackie virus, parvovirus, etc. in a few seconds to a few minutes, and inactivates yellow staphylococcus, glaucoma, salmonella, vibrio, etc. It is described that not only Candida and tuberculosis but also disinfectant alcohol, spores of Defisile and spores for which heating is ineffective can be killed in a short time. Furthermore, the document states that it is also effective against methicillin-resistant Staphylococcus aureus (MRSA), multidrug-resistant Pseudomonas aeruginosa (MDRP), and vancomycin-resistant enterococci (VRE), which are currently problems in the medical field. Are listed. Further, the document describes that a diluted solution of sodium hypochlorite having extremely high bactericidal properties and safety in space sterilization, humidification, hand washing, gargle, etc. is used as a means for blocking the infection route. There is.

Sodium hypochlorite is a sodium salt (NaClO) of hypochlorous acid, and its aqueous solution is usually commercially available at concentrations of 12%, 10%, and 6%, and is suitable depending on the application. It is diluted and used. The concentration of sodium hypochlorite is generally about 0.8 ppm for sterilizing water (drinking water, pool, wastewater), and for sterilizing tableware, raw vegetables and fruits. It seems that it is about 100 ppm, about 600 ppm for sterilization of bathrooms, bathtubs, toilet bowls, etc., and about 600 to 2000 ppm for stain removal and bleaching.

The diluted solution of sodium hypochlorite is a commercially available water-soluble solution having the above concentration, which is manually diluted at the work site. However, in the case of a commercially available solution having a relatively high concentration, it has a strong sterilizing effect, so care must be taken in preparing diluted water. As an apparatus for producing sterilizing diluted water, for example, some techniques such as

Patent Documents

1 and 2 have been proposed.

Patent Document 1 proposes a sterilizing diluted water manufacturing device that solves the problem that a stock solution of a chlorine-based aqueous solution or an acid aqueous solution easily flows out into water in a mixer when the sterilizing water manufacturing device is stopped. Has been done. The technology is provided in a water flow path, a stock solution reservoir that stores an undiluted solution of an acid aqueous solution or a chlorine-based aqueous solution, and keeps the liquid level of the stored undiluted solution at a predetermined height, and a water flow path. A mixer for sucking and mixing an acid aqueous solution or a chlorine-based aqueous solution from the stock solution reservoir and water mixed with an acid aqueous solution overflow at a predetermined height, and a flow path downstream of the mixer. It is equipped with an overflow tank that receives the outlet of the water at a position lower than a predetermined height.

Patent Document 2 proposes a sterilizing water production device that prevents the possibility of leakage of these aqueous solutions even if the acid aqueous solution container or the chlorine-based aqueous solution container falls, and makes the device compact. In this technology, in a sterilizing water production device that produces sterilizing water by mixing an acid aqueous solution and a chlorine-based aqueous solution into water, the acid aqueous solution is sucked from the acid aqueous solution container by the negative pressure generated by using the water flow and turned into water. It has an acid aqueous solution mixer to be mixed and a chlorine-based aqueous solution mixer that sucks the chlorine-based aqueous solution from the chlorine-based aqueous solution container by a negative pressure generated by using a water stream and mixes it into water. It is a sterilizing water production device that produces sterilized water by mixing the aqueous solution mixed with the chlorine-based aqueous solution, and the acid aqueous solution or the chlorine-based aqueous solution is sucked into the acid aqueous solution container and the chlorine-based aqueous solution container by negative pressure. It is said that the necessary air can be taken in from the outside, but the aqueous solution is sealed by a lid equipped with a check valve to prevent the outflow of the aqueous solution from the inside.

Japanese Unexamined Patent Publication No. 2006-297174 Japanese Unexamined Patent Publication No. 2015-9234

The sodium hypochlorite diluted solution is prepared by diluting the commercially available solution, but by hand, the commercially available solution adheres to the skin and clothes during the work. Therefore, a dedicated diluting device is commercially available. However, the dedicated diluting device is large and expensive, and multiple units cannot be installed. If a sodium hypochlorite diluent generator can be installed at each station in a welfare facility or hospital, caregivers and nurses can easily and quickly prepare the diluent and immediately go to the patient for treatment. it can.

The present invention solves the above-mentioned problems, and an object of the present invention is to easily obtain a diluted sodium hypochlorite solution effective for sterilization, sterilization, infection prevention, deodorization, cleaning, cleaning, deodorization, etc. An object of the present invention is to provide a sodium hypochlorite diluent generator that can be rapidly produced, and has achieved miniaturization and cost reduction.

(1) The sodium hypochlorite diluent generation device according to the present invention is provided above the site where the container for generating the diluent is installed, and has a storage chamber for charging and accommodating the sodium hypochlorite solution. A sub-containment chamber attached to the bottom of the containment chamber and accommodating the sodium hypochlorite solution by spontaneous flow, and a first on-off valve for a predetermined amount of the sodium hypochlorite solution from the sub-accommodation chamber. It is characterized by having a quantification chamber for flowing out and accommodating the quantification chamber, and an injection portion for injecting the predetermined amount of sodium hypochlorite solution from the quantification chamber into the container by flowing down by a second on-off valve. ..

According to the present invention, the sodium hypochlorite solution contained in the storage chamber is flowed into the metering chamber by the first on-off valve via the sub-containment chamber, and then injected into the container by the second on-off valve. , It can be controlled only by the on-off valve without using a pump or the like as in the conventional case. As a result, it is possible to realize miniaturization and cost reduction of the device. Further, if the sodium hypochlorite solution is stored in the storage chamber in advance, the sodium hypochlorite diluted solution can be easily and quickly produced only by operating the on-off valve such as the solenoid valve. In particular, since the sub-containment chamber is provided under the accommodation chamber, the sodium hypochlorite solution is accommodated in the sub-accommodation chamber even if the sodium hypochlorite solution in the accommodation chamber is emptied. As a result, the sodium hypochlorite diluted solution can be produced without any problem until the storage chamber is replenished with the sodium hypochlorite solution. As described above, since the present invention is a mechanism in which the liquid naturally flows down by opening and closing the valve without using a pump, it is a low-cost and safe diluent generator.

In the sodium hypochlorite diluent generator according to the present invention, the first on-off valve and the second on-off valve are solenoid valves, and when the first on-off valve opens, the second on-off valve closes. When a predetermined amount of the sodium hypochlorite solution is contained in the metering chamber as it is and the predetermined amount is contained, the first on-off valve closes and the second on-off valve opens to open the hypochlorous acid. A predetermined amount of the sodium solution is injected into the container.

By the operation of such a solenoid valve, a predetermined amount of sodium hypochlorite solution discharged from the sub-containment chamber can be injected into the container.

In the sodium hypochlorite diluent generator according to the present invention, the sub-containment chamber is provided at a position adjacent to the quantification chamber, and the inflow from the outflow portion at the bottom of the sub-containment chamber to the bottom of the quantification chamber. A pipe into which the sodium hypochlorite liquid flows is provided in the portion, and the first on-off valve is provided in the middle of the pipe.

In the sodium hypochlorite diluent generator according to the present invention, the sub-accommodation chamber is formed by connecting an upper member and a lower member, and the upper portion of the upper member is provided with a mounting portion to be attached to the bottom of the accommodating chamber. The lower portion of the upper member is provided with a connecting portion that is fitted into the inner peripheral surface of the lower member without a gap.

In the sodium hypochlorite diluent generator according to the present invention, the containment chamber has a third on-off valve for making the pressure in the containment chamber the same as the atmospheric pressure.

According to the present invention, when the sodium hypochlorite solution is discharged from the closed containment chamber and the sub-containment chamber connected to the containment chamber to the metering chamber, the third on-off valve is opened to open the containment chamber (sub-accommodation). It is possible to facilitate the natural flow of the sodium hypochlorite solution (including the chamber). Furthermore, since the third on-off valve is closed except when flowing out to the metering chamber, the sodium hypochlorite solution volatilizes or volatilizes from the containment chamber and the sub-containment chamber in which the sodium hypochlorite solution is contained. It is possible to prevent evaporation and prevent the emission of the odor of the sodium hypochlorite solution. In addition, by closing the third on-off valve except when the sodium hypochlorite solution is discharged to the metering chamber, the containment chamber and the sub-containment chamber can be sealed, so that the device may tip over by any chance. Even if there is, the sodium hypochlorite solution does not leak from the containment chamber or sub-containment chamber.

In the device for generating the sodium hypochlorite diluent according to the present invention, in the quantification chamber, when the sodium hypochlorite solution is injected into the container from the quantification chamber, the pressure in the quantification chamber is atmospheric pressure. Will be the same as.

According to the present invention, a predetermined amount of sodium hypochlorite solution contained in the metering chamber can be easily injected into the container. Since the sodium hypochlorite solution does not remain in the quantification chamber after injection into the container, the problem of volatilization and odor of the sodium hypochlorite solution is small. As a means for making the atmospheric pressure the same, an open pipe that keeps the atmospheric pressure at all times may be provided, or a fourth on-off valve that opens at the same time as the second on-off valve opens may be provided.

In the sodium hypochlorite diluent generator according to the present invention, the injection unit has an injection nozzle for injecting the sodium hypochlorite solution into the container, and the injection nozzle is previously provided in the container. It is designed to be long enough to fit into the water contained in the container.

According to the present invention, since the injection unit has an injection nozzle designed to have a length that allows it to enter water that has been previously placed in the container, the sodium hypochlorite solution remains at the tip of the injection nozzle. No, only the sodium hypochlorite diluent remaining diluted with water remains. As a result, the liquid that may drip from the tip of the injection nozzle is a diluted liquid having a low concentration, so that even if it comes into contact with the liquid, there is no significant effect.

In the sodium hypochlorite diluent generator according to the present invention, the quantification chamber includes a first liquid level sensor that detects the sodium hypochlorite solution that has reached the predetermined amount, and the next of the predetermined amount. It is equipped with a second liquid level sensor that detects that the sodium hypochlorite liquid has been poured into the container.

According to the present invention, when a predetermined amount is detected by the first liquid level sensor, the first on-off valve is closed and the second on-off valve is opened. Therefore, a sodium hypochlorite diluted solution diluted to a predetermined concentration is always used. Can be generated. Further, since the second liquid level sensor detects that a predetermined amount of the sodium hypochlorite liquid has been poured into the container, the sodium hypochlorite liquid in the metering chamber can be discharged without waste. ..

In the sodium hypochlorite diluent generating apparatus according to the present invention, an acidic solution for adjusting the pH of the sodium hypochlorite diluent produced in the container is accommodated by being attached to the mouth of the container. It is equipped with an acid storage cap.

According to the present invention, the pH of the sodium hypochlorite diluted solution produced in the container can be adjusted by the acid containing cap containing the acidic solution.

In the sodium hypochlorite diluted solution generation device according to the present invention, the quantification chamber has a flow nozzle for flowing the sodium hypochlorite solution from the quantification chamber toward the container, and the flow nozzle is provided. Has a flange portion on the side of the metering chamber, and changes the size of the flange portion to finely adjust the amount of the sodium hypochlorite solution contained in the metering chamber.

According to the present invention, a predetermined amount of sodium hypochlorite solution to be stored in the metering chamber is detected by a liquid level sensor or the like, but other than that, fine adjustment can be made by such a flow nozzle.

In the sodium hypochlorite diluent generator according to the present invention, the storage chamber and the metering chamber are connected by the pipe without providing the sub storage chamber, and the first on-off valve is in the middle of the pipe. It may be provided in.

According to the present invention, the sodium hypochlorite solution contained in the storage chamber can be discharged to the metering chamber by the first on-off valve and then injected into the container by the second on-off valve.

According to the present invention, a diluted sodium hypochlorite solution effective for sterilization, sterilization, infection prevention, deodorization, cleaning, cleaning, deodorization, etc. can be easily and quickly produced, resulting in miniaturization and cost reduction. It is possible to provide a realized device for generating a sodium hypochlorite diluent.

It is a perspective view which shows an example of the generator of the sodium hypochlorite diluted solution which concerns on this invention. It is an example of the front view (A) and the sectional view (B) of BB shown in FIG. It is an example of the left side view (B) and the cross-sectional view (A) of AA of the generator shown in FIG. It is explanatory drawing of an example of the internal structure on the upper side of the generator shown in FIG. It is explanatory drawing which shows an example of the structural form of a quantification chamber. It is a flow figure explaining the operation process of the generator of the sodium hypochlorite diluent which concerns on this invention. It is explanatory drawing which shows an example of the structural form of the acid containing cap. This is an example of an external photograph of the generator of the sodium hypochlorite diluent according to the present invention. It is explanatory drawing of another example of the internal structure on the upper side of the generator shown in FIG. 1, and is the example which provided the sub accommodation chamber. It is explanatory drawing which shows an example of the structure of the sub-accommodation chamber composed of two members (upper member and lower member), (A) is an overall view, and (B) is the form of the upper member and the lower member respectively. is there.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention includes inventions having the same technical ideas as those described in the embodiments and drawings described below, and the technical scope of the present invention is limited to the description of the embodiments and the drawings. Not. In the present invention, the term "generation apparatus" is used, but it may be read as "manufacturing apparatus".

[Sodium hypochlorite diluent generator]
The generator 1 (hereinafter referred to as “generation device 1”) of the sodium hypochlorite diluent (hereinafter referred to as “diluted solution”) according to the present invention is diluted as shown in FIGS. 1 to 4 and 9. A storage chamber 39 provided above the site where the liquid generation container 5 is installed to charge and store the sodium hypochlorite liquid 60, and a storage chamber 39 attached to the bottom of the storage chamber 39 to store the sodium hypochlorite liquid 60. From the sub-containment chamber 80 in which the sodium hypochlorite is naturally flowed down and accommodated, the quantification chamber 56 in which a predetermined amount of the sodium hypochlorite solution 60 is discharged from the sub-accommodation chamber 80 by the first on-off valve 53, and the quantification chamber 56 is accommodated. It has an injection unit 45 in which a predetermined amount of sodium hypochlorite solution 60 is naturally flowed down by a second on-off valve 54 and injected into the container 5.

In this generator 1, the sodium hypochlorite solution 60 stored in the storage chamber 39 is flowed into the metering chamber 56 by the first on-off valve 53 via the sub-containment chamber 80, and then by the second on-off valve 54. Since it is injected into the container 5, it can be controlled only by the first and second on-off

valves

53 and 54 without using a pump or the like as in the conventional case. As a result, it is possible to realize miniaturization and cost reduction of the device. Further, if the sodium hypochlorite solution 60 is stored in the storage chamber 39 in advance, sterilization, sterilization, infection prevention, deodorization, cleaning, cleaning, etc. can be performed simply by operating the on-off

valves

53 and 54 such as the solenoid valve. A diluted solution effective for deodorizing and the like can be repeatedly and easily and quickly generated. In particular, since the sub-containment chamber 80 is provided under the accommodation chamber 39, the sodium hypochlorite solution 60 is accommodated in the sub-accommodation chamber 81 even if the sodium hypochlorite solution 60 in the accommodation room is emptied. .. As a result, the sodium hypochlorite diluted solution can be produced without any problem until the storage chamber 39 is replenished with the sodium hypochlorite solution 60.

As shown in FIG. 4, the storage chamber 39 and the metering chamber 56 are connected by a pipe 58 without providing the sub storage chamber 80, so that the first on-off valve 53 is provided in the middle of the pipe 58. You may.

Each component will be described below.

<Generator and container>
As shown in FIG. 1, the generation device 1 is composed of a bottom portion 2, a main body portion 3, and an upper portion 4. The bottom portion 2 is a portion on which the container 5 is placed, and a tray 21 on which the container 5 can be placed is provided. When the container 5 is placed on the table on which the generation device 1 is placed, the tray 21 may not be provided. The main body 3 is provided with 31 on the right side surface and the left side surface. Inside the main body 3, a circuit plate 38 for driving and controlling the first to third on-off valves (solenoid valves), a liquid level sensor, etc., wirings (not shown), and a connector (not shown) are provided. The main body 3 is provided with a power supply 37 such as an AC adapter and a battery, if necessary. The upper part 4 is provided with main members of the generation device 1 according to the present invention, such as a storage chamber 39, a sub storage chamber 80, a metering chamber 56, and an operation panel 44. The materials of the bottom portion 2, the main body portion 3, and the upper portion 4 are not particularly limited, but are preferably formed of a material having excellent corrosion resistance, and examples of such a material include stainless steel and a high-strength resin material. Can be done.

The container 5 mounted on the generator 1 is not particularly limited, but is preferably a so-called PET bottle or a similar container as shown in FIG. Such containers such as PET bottles are preferably used because they are easy to put in and the cost is low. The container 5 is preferably colorless and transparent or colored transparent, and in the example of FIG. 8, a colorless and transparent PET bottle is used as the container 5. The capacity of the container 5 is not particularly limited, but a container 5 such as 1000 mL or 500 mL is preferable because of its versatility.

When setting the container 5 in the generator 1, a predetermined amount of water is put in the container 5. Water can be used properly according to the purpose, such as tap water or pure water. The amount of water can be adjusted by putting a line in the container 5 and putting water up to the line. As for the amount of water, when 1000 mL of 200 ppm diluted water is produced using the 6% sodium hypochlorite solution 60, 4 mL of the 6% sodium hypochlorite solution may be injected. Therefore, a container 5 containing approximately 1000 mL of water in a 1000 mL PET bottle may be set in the tray 21 of the generator 1. On the other hand, when 1000 mL of diluted water of 1000 ppm is produced using the 6% sodium hypochlorite solution 60, 20 mL of the 6% sodium hypochlorite solution may be injected. Therefore, the container 5 containing a little less than 1000 mL (about 980 mL) of water in a 1000 mL PET bottle may be set in the tray 21 of the generator 1.

Whether or not the container 5 containing water is set in the generation device 1 can be detected by the container sensor 35 provided in the main body 3. The container sensor 35 can detect the presence of the container 5 (including water) with an optical sensor from the sensor window 32 provided in the main body 3. The type of the container sensor 35 is not particularly limited. The container sensor 35 detects the presence of the container 5 containing water. On the premise of this detection, each on-off valve is opened and closed. That is, if the container sensor 35 does not detect the container 5, the on-off valve of the generator 1 does not operate. By doing so, the sodium hypochlorite solution 60 is not discharged from the injection unit 45 without the presence of the container. Further, even when the container 5 does not contain water, the container sensor 35 does not detect the presence of the container 5.

<Tray>
Although the tray 21 is not an essential member, as shown in FIG. 1 and the like, the tray 21 is preferably provided on the bottom 2 as a member for installing the container 5 for generating the diluent. The shape of the tray 21 is not particularly limited and may be in various forms, but as shown in FIGS. 2A and 3A, it is preferable that the tray 21 has a dish shape with a concave center. It is preferable that the tray 21 is provided with a slit plate 22 in which a slit is formed. The slit plate 22 is a member that functions so that even if the sodium hypochlorite solution 60 or the produced diluent overflows, it can pass through the slit and be stored in the tray 21. The shape of the slit plate 22 is not particularly limited, but in the example of FIG. 1, slits are formed radially from the central hole 23. Since the slit plate 22 is arranged on the tray 21, the central hole 23 and the corner hole 24 are not particularly limited, but the holes are large enough to be picked up by fingers so that the slit plate 22 can be picked up. It is preferable to have.

<Accommodation room>
The storage chamber 39 is a member for charging and storing the sodium hypochlorite solution 60, is arranged in the upper portion 4 of the generation device 1, and is provided above the portion (preferably the tray 21) in which the container 5 is installed. There is. The capacity of the storage chamber 39 is not particularly limited, but as an example, it is preferable that the standard capacity of the sodium hypochlorite solution 60 is a capacity that can accommodate 500 mL or 600 mL that are widely available on the market at one time. The upper limit of such capacity is a capacity that allows a little margin even if all 500 mL or 600 mL of sodium hypochlorite solution 60 is added, and the lower limit is about 200 mL from the viewpoint of realizing miniaturization of the storage chamber 39. It can, but is not limited to these.

The storage chamber 39 has a charging port 40, and the sodium hypochlorite solution 60 is charged from the charging port 40. The slot 40 appears when the knob 34 is pinched by hand and the upper lid 33 is opened. It is preferable that the input port 40 is tightly closed by screwing the male screw port 41a and the female screw cap 41b. By doing so, it is possible to prevent volatilization of the sodium hypochlorite solution 60 and emission of odor. The accommodation chamber 39 may be provided with a liquid level gauge accommodating unit 51 and a liquid level gauge observation unit 52. A float type liquid level gauge as shown in FIG. 4 is provided in the liquid level gauge accommodating portion 51. When the liquid level gauge observation unit 52 is provided with a float type liquid level gauge as shown in FIG. 4, for example, the liquid level can be confirmed at the position of a bar extending from the upper portion thereof. Any means other than the liquid level gauge storage unit 51 and the liquid level gauge observation unit 52 may be used as long as the amount of the sodium hypochlorite liquid 60 in the storage chamber 39 can be measured or observed.

<Sub containment room>
The sub-containment chamber 80 is also called a sub-tank, and as shown in FIGS. 9 and 10, a tank attached to the bottom of the accommodation chamber 39 and in which the sodium hypochlorite solution 60 naturally flows down from the accommodation chamber 39 and is accommodated. Is. The sub-accommodation chamber 80 is connected to the metering chamber 56 by a pipe 58, and a predetermined amount of the sodium hypochlorite solution 60 flows out to the metering chamber 56 by a first on-off valve 53 provided in the middle of the pipe 58. .. Since such a sub-containment chamber 80 is provided under the accommodation chamber 39, the sodium hypochlorite solution 60 is accommodated in the sub-accommodation chamber 81 even if the sodium hypochlorite solution 60 in the accommodation chamber is emptied. ing. As a result, even until the storage chamber 39 is emptied and the sodium hypochlorite solution 60 is replenished, for example, the air is caught in a narrow outflow path and the hypochlorous acid is transferred from the storage chamber 39 to the quantitative chamber 56. The sodium hypochlorite diluted solution can be produced without causing problems such as the sodium solution 60 not easily flowing out.

As shown in FIG. 9, the sub-containment chamber 80 is provided at a position adjacent to the metering chamber 56. The size of the sub-containment chamber 80 is not particularly limited, but even if the sodium hypochlorite solution 60 in the containment chamber 39 is emptied and the replenishment instruction displayed on the operation panel is overlooked, the quantitative chamber is to some extent. Any size may be sufficient as long as the amount that can be supplied to 56 can be secured. As an example, for example, a container of about 10 mL may be used. As shown in FIG. 9, the "adjacent position" is preferably provided directly beside the pipe 58 and the first on-off valve 53 sandwiched between them.

The sub-containment chamber 80 is provided at the bottom of the accommodation chamber 39, and the "bottom" means the bottom surface or the bottom of the side surface of the accommodation chamber 39. The sub-containment chamber 80 can be easily attached to the bottom surface of the accommodation chamber 39, but may be attached to the lowermost part of the side surface of the accommodation chamber 39 if the difficulty of attachment is not considered.

An outflow portion 83 (see FIG. 10) and an outflow nozzle 82 are provided at the bottom of the sub storage chamber 80. The sodium hypochlorite solution 60 flowing out from the outflow portion 83 and the outflow nozzle 82 flows into the metering chamber 56 from the inflow nozzle 59 at the bottom of the metering chamber 56 via the pipe and the first on-off valve 53. The first on-off valve 53 is provided in the middle of the pipe 58.

The sub-containment chamber 80 is attached to the accommodation chamber 39. The means for that purpose is various and not particularly limited, but it is preferable that the upper portion of the sub-accommodation chamber 80 is provided with a mounting portion (mounting screw portion) 84 and a flange portion 85 to be attached to the bottom of the accommodating chamber 39. By providing the female screw portion at the bottom of the storage chamber 39, the male screw type mounting screw portion 84 of the sub storage chamber 80 can be attached.

The sub-accommodation chamber 80 may be an integrated type as shown in FIG. 9, or may be a separable assembly type as shown in FIG. 10A and 10B are explanatory views showing an example of the structure of the sub-accommodation chamber 80 composed of two members (upper member 80a and lower member 80b), (A) is an overall view, and (B) is an upper member. It is a form of each of the 80a and the lower member 80b. The form of the sub-containment chamber 80 in FIG. 10 is an example, and is not limited to this form. The sub-accommodation chamber 80 of FIG. 10 is formed by connecting the upper member 80a and the lower member 80b. The upper portion of the upper member 80a includes a mounting portion (mounting screw portion) 84 and a flange portion 85 to be attached to the bottom of the accommodating chamber 39. By providing the female screw portion at the bottom of the storage chamber 39, the male screw type mounting screw portion 84 of the sub storage chamber 80 can be attached.

The lower part of the upper member 80a is provided with a connecting portion 86 that is fitted into the inner peripheral surface of the lower member 80b without any gap. The connecting portion 86 includes two O-rings 87 and is in close contact with the inner peripheral surface of the lower member 80b. Due to this close contact, the split type sub-accommodation chamber 80 can also have a closed structure. After the upper member 80a and the lower member 80b are fitted by the connecting portion 86, the tip of the push screw 89 provided on the lower member 80b is pressed against the recess 88 of the upper member 80a to press the upper member 80a and the lower member 80a. The member 80b can be integrated.

<Opening valve>
In FIG. 9, the first on-off valve 53 is provided in the middle of the pipe 58 connecting the sub-accommodation chamber 80 and the metering chamber 56. On the other hand, in FIG. 4, it is provided in the middle of the pipe 58 connecting the accommodation chamber 39 and the metering chamber 56. The first on-off valve 53 is an on-off valve for letting out or stopping the outflow of the sodium hypochlorite solution 60 from the sub-accommodation chamber 80 or the accommodation chamber 39. Preferably, a solenoid valve is adopted. When the first on-off valve 53 is opened, the sodium hypochlorite solution 60 flows out from the nozzle 53a and is housed in the metering chamber 56 via the pipe 58 and the nozzle 59. The outflow at this time means that the outflow (spontaneous outflow) occurs at atmospheric pressure without using a pump.

When the first on-off valve 53 is opened and the sodium hypochlorite solution 60 flows out of the accommodation chamber 39 (FIG. 4) or the sub-accommodation chamber 80 (FIG. 9), the second on-off valve 54, which will be described later, remains closed. By doing so, the outflowed sodium hypochlorite solution 60 enters the quantification chamber 56 without being injected into the container. As will be described later, when a predetermined amount of sodium hypochlorite solution 60 is contained in the metering chamber 56, the first on-off valve 53 is closed and the second on-off valve 54 is opened. By operating the on-off valve in this way, a predetermined amount of the sodium hypochlorite solution 60 is injected into the container 5.

The fact that the sodium hypochlorite solution 60 flows out (spontaneously outflows) at atmospheric pressure means that the accommodation chamber 39 (including the space consisting of the accommodation chamber 39 and the sub-containment chamber 80. The same applies in this paragraph) is large. It means that it is open to atmospheric pressure. In the example of FIG. 4, such opening can be performed at the air inlet 55a which is opened and closed by the third on-off valve 55 provided in the upper part of the accommodation chamber 39, and the pressure in the accommodation chamber 39 is made the same as the atmospheric pressure. be able to. The third on-off valve 55 is also preferably a solenoid valve. In this way, when the sodium hypochlorite solution 60 is discharged from the closed storage chamber 39 to the metering chamber 56, the third on-off valve 55 is opened to bring the inside of the storage chamber 39 to atmospheric pressure and hypochlorous acid. The sodium solution 60 can be easily discharged.

The third on-off valve 55 is closed except when it is discharged to the metering chamber 56. By doing so, it is possible to prevent the sodium hypochlorite liquid 60 from volatilizing or evaporating from the storage chamber 39 or the sub-storage chamber 80 in which the sodium hypochlorite liquid 60 is housed in a well-sealed state. it can. As a result, it is possible to prevent the odor of the sodium hypochlorite solution 60 from being emitted. In addition, the third on-off valve (solenoid valve) 55 should be closed except when the sodium hypochlorite solution 60 is discharged from the storage chamber 39 (FIG. 4) or the sub-containment chamber 80 (FIG. 9) to the metering chamber 56. Therefore, the storage chamber 39 can be sealed. Therefore, even if the device 1 may tip over, the sodium hypochlorite solution 60 does not leak from the storage chamber 39.

<Quantitative room>
The metering chamber 56 is a member that allows a predetermined amount of the sodium hypochlorite solution 60 to flow out (spontaneously outflow) from the sub-containment chamber 80 (containment chamber 39 in FIG. 4) by the first on-off valve 53 in FIG. .. When the sodium hypochlorite solution 60 is injected into the container 5 from the quantification chamber 56, the pressure in the quantification chamber 56 is made the same as the atmospheric pressure. By doing so, a predetermined amount of the sodium hypochlorite solution 60 contained in the quantification chamber 56 can be easily injected into the container 5. Since the sodium hypochlorite solution 60 does not remain in the quantification chamber 56 after being injected into the container 5, the problem of volatilization and odor of the sodium hypochlorite solution 60 is small. As a means for making the atmospheric pressure the same, a pipe 57 that always keeps the atmospheric pressure may be provided, or a fourth on-off valve (not shown) that opens at the same time as the second on-off valve 54 opens may be provided. Good.

As shown in FIG. 5, the metering chamber 56 is composed of a transparent pipe 61, a lower flange 62 that holds the transparent pipe 61 from below, and an upper flange 63 that holds the transparent pipe 61 from above. The upper flange 63 is provided with the pipe 57 described above. A nozzle 59 for flowing in the sodium hypochlorite solution 60 is connected to the lower flange 62. The arrow in FIG. 5C shows the flow of the sodium hypochlorite solution 60 flowing out of the sub-containment chamber 80 (containment chamber 39 in FIG. 4) in FIG.

As shown in FIG. 5B, the quantification chamber 56 contains first liquid level sensors 66a and 66b for detecting a predetermined amount of sodium hypochlorite solution 60, and a predetermined amount of sodium hypochlorite solution. It is provided with second

liquid level sensors

67a and 67b for detecting that 60 has finished pouring into the container 5. By doing so, when a predetermined amount is detected by the first liquid level sensors 66a and 66b, the first on-off valve 53 is closed and the second on-off valve 54 is opened, so that hypochlorous acid always diluted to a predetermined concentration is used. A sodium diluent can be produced. Further, since the second

liquid level sensors

67a and 67b detect that a predetermined amount of the sodium hypochlorite liquid 60 has been poured into the container 5, the sodium hypochlorite liquid 60 in the quantification chamber 56 is wasted. Can be discharged without. In the example of FIG. 5B, the first liquid level sensors 66a and 66b and the second

liquid level sensors

67a and 67b are provided, but other liquid level sensors may be provided. The first liquid level sensors 66a and 66b can detect a predetermined amount of the sodium hypochlorite liquid 60 contained in the metering chamber 56, but in addition to that, as will be described later, FIG. It can be finely adjusted by the structure of the flow nozzle 54a shown in.

As shown in FIG. 5, the quantification chamber 56 has a flow nozzle 54a that allows the sodium hypochlorite solution 60 to flow down from the inside of the quantification chamber 56 toward the container 5. The flow-down nozzle 54a has a flange portion 65 on the metering chamber side. The size of the flange portion 65 can be changed to finely adjust the amount of the sodium hypochlorite solution 60 contained in the metering chamber 56. Specifically, by changing the height of the flange portion 65 shown in FIG. 5, the amount of the sodium hypochlorite solution 60 in the quantification chamber 56 is finely adjusted by the volume of the flange portion 65. Can be done. Therefore, it is preferable to prepare a plurality of types of flange portions 65 having different heights.

<Injection part>
The injection unit 45 is a member that allows a predetermined amount of sodium hypochlorite solution 60 to flow down (naturally flow down) from the metering chamber 56 by the second on-off valve 54 and inject it into the container 5. The injection unit 45 has an injection nozzle (not shown) for injecting the sodium hypochlorite solution 60 into the container 5. The injection nozzle is designed to have a length that allows it to enter water that has been previously placed in the container 5. By doing so, the sodium hypochlorite solution 60 does not remain at the tip of the injection nozzle, only the diluted solution diluted with water remains. As a result, the liquid that may drip from the tip of the injection nozzle is a diluted liquid having a low concentration, so that even if it comes into contact with the liquid, there is no significant effect. The shape of the injection nozzle is not particularly limited, but it may be a pipe having the same diameter or a pipe having a tapered tip. As shown in FIG. 2B, a connection pipe 54b is provided between the injection unit 45 and the second on-off valve 54, if necessary.

Diluted water can be obtained by injecting a predetermined amount of sodium hypochlorite solution 60 into the water in the container 5. For example, when 200 ppm of diluted water is used, the pH is about 9.8, and when 1000 ppm of diluted water is used, the pH is about 10.7. As described above, since the diluted water is alkaline, it can be used as it is, of course, but it can be neutralized by adding an acidic solution to obtain a neutral solution. Neutralization may be carried out by applying the acid containing cap 90 described later. Neutralized diluted water is extremely safe and has high bactericidal activity accompanied by oxidative decomposition. Therefore, it can be used for sterilizing and cleaning wounds, oral care, and air spraying as a countermeasure against airborne infection.

<Operation panel surface, etc.>
As shown in FIG. 1, the front surface of the upper portion 4 of the generator 1 is composed of an operation panel surface 41, a front surface portion 42, and an inclined portion 43. The operation panel 44 is preferably a liquid crystal display panel, and is embedded in the operation panel surface 41. In such an operation on the operation panel 44, at least the concentration of the diluent is set, but other indications can be performed. Such displays include the presence / absence of the container 5 by the container sensor 35, the display of replenishment of the sodium hypochlorite solution 60 in the storage chamber 39 and the display of the remaining amount, the selection display of the child lock, the display of the piping abnormality, and the power supply. The device can be arbitrarily selected from functions such as abnormality display, battery level display, time display, and information data transmission display. In reality, it is designed in consideration of cost.

<Operation flow>
FIG. 6 is a flow chart illustrating an operation process of the generation device 1. Hereinafter, the flow order will be described. First, turn on the power, set the initial information, and start. Next, the container sensor 35 detects whether or not the container 5 containing water is installed. If a container 5 containing water is installed, set the concentration. In the example of FIG. 6, the concentration of either 200 ppm or 1000 ppm is selected. After selecting the concentration, the first on-off valve (solenoid valve) 53 and the third on-off valve (solenoid valve) 55 are opened, from the sub-containment chamber 80 (containment chamber 39 in FIG. 4) to the metering chamber 56 in FIG. Sodium hypochlorite solution 60 flows in. At this time, the second on-off valve (solenoid valve) 54 is closed. In the quantification in the quantification chamber 56, when the pair of upper first liquid level sensors 66a and 66b are turned on and the liquid is detected by the first liquid level sensors 66a and 66b, the first on-off valve 53 is closed and the first on-off valve 53 is closed. 2 The on-off valve 54 opens. When the second on-off valve 54 is opened, the sodium hypochlorite solution 60 is injected into the container from the metering chamber 56. The second on-off valve 54 is closed when the liquid is no longer detected by the second

liquid level sensors

67a and 67b. At the same time, the third on-off valve 55 is also closed. When the concentration is set to 1000 ppm, this operation is repeated 5 times. In this way, diluted water can be produced.

If the first liquid level sensors 66a and 66b of the metering chamber 56 cannot detect that the predetermined amount has been reached, for example, a 5-second timeout chemical replenishment message is displayed, the first on-off valve 53 is closed, and then After confirming the replenishment, the first on-off valve 53 is opened again. When the first liquid level sensors 66a and 66b can detect that the predetermined amount has been reached by such an operation, the second on-off valve 54 opens and the sodium hypochlorite liquid 60 is injected into the container from the metering chamber 56. Will be done.

<Acid storage cap>
In the generator 1 according to the present invention, the sodium hypochlorite solution 60 can be injected into the container 5 to generate diluted water, but the obtained diluted water is alkaline as it is. Of course, the alkaline diluent is effective for bacteria, sterilization, infection prevention, deodorization, cleaning, cleaning, deodorization, etc., but by neutralizing it to make it neutral, the range of its utilization can be expanded. .. The neutralized diluted water can be sprayed into the atmosphere, and can be used without problems for materials that easily discolor in response to alkali.

Neutralization can be performed by supplying acid. FIG. 7 is an example of an acid containing cap 90 that houses an acidic solution. The acid containing cap 90 is a member that is attached to the mouth of the container 5 and holds an acidic solution for adjusting the pH of the diluted solution produced in the container 5. With this acid containing cap 90, the pH of the diluent produced in the container 5 can be adjusted.

In the example shown in FIG. 7, the acid accommodating cap 90 is composed of a body portion 91, an acid accommodating portion 92, and a tip lid portion 93. As shown in FIGS. 7A and 7B, the body portion 91 is a hollow body portion that penetrates the acid accommodating portion 92, and is in contact with the anti-slip portion 91a, the acid accommodating portion connecting portion 91b, and the tip lid portion. It is composed of a part 91c. The anti-slip portion 91a is a portion processed so as not to slip when held by hand. As shown in FIGS. 7B and 7C, the acid accommodating portion connecting portion 91b is a male screw portion screwed into a female screw portion (not shown) formed on the inner wall surface of the rotating portion 92a of the acid accommodating portion 92. Is. The tip lid portion contact portion 91c is a portion that contacts the tip lid portion 93 when it is fitted to the tip of the acid accommodating portion 92.

The acid accommodating portion 92 is composed of a rotating portion 92a and a tubular portion 92b. The rotating portion 92a has a female screw portion on the inner wall surface thereof, and is screwed into the acid accommodating portion connecting portion 91b of the body portion 91. The tubular portion 92b is a tubular body that penetrates the hollow portion of the body portion 91, and is a portion that houses an acidic solution (for example, a hydrochloric acid solution having a predetermined concentration) inside.

The tip lid portion 93 is composed of a lid outer peripheral portion 93a, a lid inner peripheral portion 93b, and a lid fitting portion 93c between the lid outer peripheral portion 93a and the lid inner peripheral portion 93b. As shown in FIGS. 7B and 7C, the tip lid portion 93 has a lid fitting portion 93c fitted to the tip of the acid containing portion 92 so as to seal the acidic solution contained in the acid containing portion 92. Works for.

As shown in FIG. 7C, the acid solution is contained in the acid accommodating portion 92 and the tip lid portion 93. Since the inner wall surface of the body portion 91 is provided with a screw portion for screwing and connecting to the mouth portion of the container 5, the acid storage cap 90 is screwed into the mouth portion of the container 5 containing diluted water. To connect. After that, when the acid accommodating portion 92 of the acid accommodating cap 90 is rotated, the rotating portion 92a is separated from the body portion 91, and the tip lid portion 93 is separated from the tip of the acid accommodating portion 92. Due to this detachment, the tip lid portion 93 falls into the container 5, and the acidic solution contained therein is put into the container.

The acid storage cap 90 is attached to a container 5 containing a predetermined amount of water, and after the water is acidified in advance, diluted water is generated in the container 5 and the diluted water is filled in. It is preferable to make it sex. On the other hand, the acid containing cap 90 may be attached to the container 5 containing the generated diluted water having a pH of about 9 ± 0.2 to neutralize the alkaline diluted water to acidity. The type and concentration of the acidic solution for neutralization shall depend on the amount of sodium hypochlorite solution 60 contained in the diluted water. Such neutralization with the acid containing cap 90 is controlled because the handling of the acidic solution is safe and easy, no gas is generated, the acid does not come into contact with the hand, and the acid storage management is performed by the acid containing cap 90 itself. It has the advantage of being easy. Further, since the tip lid portion 93 of the neutral diluted water remains in the container 5, it is possible to easily distinguish between the pH-adjusted neutral diluted water and the non-pH-adjusted alkaline diluted water.

The sodium hypochlorite diluent 1 generator 1 according to the present invention described above provides sodium hypochlorite diluent effective for sterilization, sterilization, infection prevention, deodorization, cleaning, cleaning, deodorization, etc. It can be generated easily and quickly. Since it does not have a pump, it is possible to realize miniaturization and cost reduction. As a result, it can be expected to be used in local governments such as welfare facilities, medical institutions, long-term care facilities, nursery schools, kindergartens, schools, fire stations, and city halls. Furthermore, because it is small and easy to move, it can be expected to be used in disaster areas. If a battery is installed, it can be used without electricity and can be used even in the event of a disaster or power outage.

In particular, norovirus substitute cat calicivirus, influenza virus, herpesvirus, adenovirus, coxsackie virus, parvovirus, Staphylococcus aureus, pyogenes, salmonella, vibrio, candida, tuberculosis, defisile spore, sporeus spore A sodium hypochlorite diluent that is effective against the virus can be safely produced at low cost. Furthermore, against methicillin-resistant Staphylococcus aureus (MRSA), multidrug-resistant Pseudomonas aeruginosa (MDRP), vancomycin-resistant enterococci (VRE), and new coronavirus (COVID-19), which are currently problems in the medical field. An effective sodium hypochlorite diluent can be safely produced at low cost. The sodium hypochlorite diluent generator according to the present invention is a mechanism in which the liquid naturally flows down by opening and closing the valve without using a pump, and is a low-cost and safe diluent generator. By installing it at each station such as welfare facilities, hospitals, government offices, schools, and various private facilities, the diluent can be prepared easily and quickly and can be used immediately. Therefore, as a means for blocking the infection route, it is extremely useful as a generator of a sodium hypochlorite diluent having extremely high bactericidal properties and safety in space sterilization, humidification, hand washing, gargle and the like.

Generator of primary sodium hypochlorite diluent 2 Bottom 3 Main body 4 Top 5 Container 21 Tray 22 Slit plate 23 Center hole 24 Corner hole 31 Take 32 Sensor window 33 Top lid 34 Knob 35 Container sensor 37 Power supply 38 Circuit board 39 Storage chamber 40 Input port 41a Male screw port 41b Female screw cap 41 Operation panel surface 42 Front part 43 Inclined part 44 Operation panel 45 Injection part 51 Liquid level gauge storage part 52 Liquid level gauge observation part 53 First on-off valve (first solenoid valve) )
53a Nozzle 54 Second on-off valve (second solenoid valve)
54a Flow nozzle 54b Connection piping 55 Third on-off valve (third solenoid valve)
55a Air inlet 56 Metering chamber 57 Piping 58 Piping 59 Nozzle 60 Sodium hypochlorite solution 61 Transparent pipe 62 Lower flange 63 Upper flange 65 Flange part 66a, 66b 1st

liquid level sensor

67a, 67b 2nd liquid level sensor 80 Sub Containment chamber

80a Upper member

80b Lower member 81 Inside of sub-accommodation chamber 82 Nozzle 83 Outflow part 84 Mounting part (mounting screw part)
85 Flange part 86 Connection part 87 O-ring 88 Recession 89 Push screw 90 Acid storage cap 91 Body part 91a Anti-slip part 91b Acid storage part Connection part 91c Tip lid contact part 92 Acid storage part

92a Rotating part

92b Cylinder part 93 Tip Lid 93a Lid outer circumference 93b Lid inner circumference 93c Lid fitting

Claims

A storage chamber provided above the site where the container for generating the diluent is installed to charge and store the sodium hypochlorite solution, and a storage chamber attached to the bottom of the storage chamber to allow the sodium hypochlorite solution to be naturally produced. A sub-containment chamber for flowing down and accommodating, a quantification chamber for storing a predetermined amount of the sodium hypochlorite solution flowing out from the sub-accommodation chamber by a first on-off valve, and a quantification chamber for accommodating the predetermined amount of the sodium hypochlorite solution. A device for producing a sodium hypochlorite diluent, which comprises an injection portion for injecting a sodium hypochlorite solution into the container by flowing it down by a second on-off valve.
The first on-off valve and the second on-off valve are solenoid valves, and when the first on-off valve opens, the second on-off valve remains closed and a predetermined amount of the sodium hypochlorite solution is placed in the metering chamber. When the predetermined amount is contained, the first on-off valve closes and the second on-off valve opens to inject a predetermined amount of the sodium hypochlorite solution into the container. The generator for the sodium hypochlorite diluent described in 1.
The sub-containment chamber is provided at a position adjacent to the metering chamber, and a pipe for flowing the sodium hypochlorite solution from the outflow portion at the bottom of the sub-containment chamber to the inflow portion at the bottom of the metering chamber is provided. The device for producing a sodium hypochlorite diluent according to claim 1 or 2, wherein the first on-off valve is provided in the middle of the pipe.
The sub-accommodation chamber is formed by connecting an upper member and a lower member, the upper portion of the upper member is provided with a mounting portion to be attached to the bottom of the accommodation chamber, and the lower portion of the upper member has a gap in the inner peripheral surface of the lower member. The device for producing a sodium hypochlorite diluent according to any one of claims 1 to 3, further comprising a connecting portion to be fitted without any trouble.
The sodium hypochlorite diluent according to any one of claims 1 to 4, wherein the containment chamber has a third on-off valve for making the pressure in the containment chamber the same as atmospheric pressure.
The quantification chamber is according to any one of claims 1 to 5, wherein when the sodium hypochlorite solution is injected into the container from the quantification chamber, the pressure in the quantification chamber becomes the same as the atmospheric pressure. The above-mentioned sodium hypochlorite diluent generator.
The injection unit has an injection nozzle for injecting the sodium hypochlorite solution into the container, and the injection nozzle is designed to have a length that allows it to enter into water previously contained in the container. , The device for producing a sodium hypochlorite diluent according to any one of claims 1 to 6.
The quantification chamber detects that the first liquid level sensor that detects the sodium hypochlorite solution that has reached the predetermined amount and that the predetermined amount of the sodium hypochlorite solution has been poured into the container. The device for producing a sodium hypochlorite diluent according to any one of claims 1 to 7, further comprising a second liquid level sensor.
The following according to any one of claims 1 to 8, which is attached to the mouth of the container and includes an acid containing cap for adjusting the pH of the sodium hypochlorite diluent produced in the container. Sodium hypochlorite diluent generator.
The quantification chamber has a flow nozzle for flowing the sodium hypochlorite solution from the quantification chamber toward the container, and the flow nozzle has a flange portion on the quantification chamber side and the flange portion. The device for producing a sodium hypochlorite diluent according to any one of claims 1 to 9, wherein the amount of the sodium hypochlorite solution to be stored in the metering chamber is finely adjusted by changing the size of the sodium hypochlorite solution.
Any one of claims 1 to 10, wherein the accommodation chamber and the metering chamber are connected by the pipe without providing the sub-accommodation chamber, and the first on-off valve is provided in the middle of the pipe. The generator for the sodium hypochlorite diluent described in 1.
A tray on which the container is placed is provided at a site where the container for generating the diluent is installed. The device for producing a sodium hypochlorite diluent according to any one of claims 1 to 11.