JP7023305B2 - Ozone water ejector - Google Patents

Description

The present invention relates to an ozone water ejection device.

Currently, there is an increasing need for sterilization, sterilization and deodorization measures in a wide range of fields such as industrial and consumer use. Under such circumstances, ozone water has a sterilizing and sterilizing effect equal to or higher than that of chlorine-based materials in food handling sites and medical sites, is highly safe for the human body, and has a low environmental load. Attention has been paid.

For example, Patent Document 1 discloses an ozone water production apparatus that produces ozone water by dissolving ozone gas generated from an ozone generation source in tap water. The apparatus disclosed in Patent Document 1 is provided with a simple mixer that promotes the dissolution of ozone gas in tap water. A simple mixer is a passage tube filled with bead-shaped particles. When tap water and ozone gas flow through the gaps between the particles filled in the passage pipe, the contact area between the tap water and the ozone gas is expanded, and the contact time is also lengthened. This improves the amount of ozone gas dissolved in tap water.

Further, Patent Document 2 discloses a small portable ozone water spray driven by a battery. Handy and small ozone water sprays are expected to be used for disinfecting and sterilizing materials, instruments, fingers, etc. in medical sites and clean rooms.

Japanese Unexamined Patent Publication No. 2004-223441 Japanese Unexamined Patent Publication No. 2006-346203

However, according to the test results of the present inventor, it was found that in the ozone water spray of Patent Document 2, ozone is not sufficiently dissolved in the liquid, and most of the ozone is sprayed in the state of ozone gas. Therefore, the efficiency of producing ozone water, which is the purpose of use, is low, and high-concentration ozone water cannot be sprayed. In addition, the Japan Society for Occupational Health has established a standard for allowable concentration of 0.1 ppm, and the FDA (United States Food and Drug Administration) has established a standard for allowable concentration of 0.05 ppm in Japan, and it is necessary to control the concentration at a low concentration. .. Therefore, when a large amount of ozone gas is ejected, there is a concern about safety for the human body.

Further, since the simple mixer proposed in Patent Document 1 has a large pressure loss, there is a possibility that ozone water cannot be sufficiently ejected. Therefore, in order to use such a simple mixer for a small ozone water spray, a high-power liquid feed pump is required.

The present invention solves the above-mentioned problems, and provides an ozone water ejection device (ozone water spray) having a function of generating ozone inside and easily ejecting ozone water in which sufficient ozone is dissolved. The purpose.

According to the aspect of the present invention, the ozone water ejection device is a container for accommodating the raw material water, an electrolysis unit that electrolyzes the raw material water to generate ozone water, and an ejection that ejects the ozone water. It has an internal space provided in the flow path between the nozzle, the liquid feeding pump for transporting the ozone water to the ejection nozzle, and the liquid feeding pump and the ejection nozzle, and flowing without being filled with the ozone water. An ozone water ejection device having a gas-liquid mixing section is provided.

In the internal space, an inlet in which the ozone water flows in from the liquid feed pump and an outlet in which the ozone water flows out toward the ejection nozzle are formed, and the top of the internal space is the inlet. It may be above the top of the. The ratio (H / h) of the height (H) from the bottom of the inlet to the top of the interior space at the inlet to the height (h) from the bottom of the inlet to the top of the inlet. However, it may be 1.1 to 4.0. The ratio (D / h) of the maximum value (D) of the length of the internal space in the extending direction of the flow path to the height (h) from the bottom of the inlet to the top of the inlet is. It may be 0.1 to 3.0. The ratio (H) of the height (H) from the bottom of the inlet to the top of the interior space at the inlet to the maximum value (D) of the length of the interior space in the extending direction of the flow path. / D) may be 0.3 to 40. The internal space may have a substantially columnar shape extending in a direction orthogonal to the flow path.

The ozone water ejection device is provided inside the branch portion having a branch flow path that extends downward at right angles to the flow path, and is provided in the branch flow path, and when the pressure in the flow path becomes equal to or higher than a predetermined pressure. It may further have a pressure release valve that is opened and closed when the pressure becomes less than a predetermined pressure, and the branch flow path and the internal space may communicate with each other. The gas-liquid mixing portion and the branch portion may be integrally molded. The ozone water ejection device further has a recovery flow path connecting the pressure release valve and the container, and even if the ozone water is recovered from the pressure release valve to the container via the recovery flow path. good. Further, the ejection nozzle may be capable of spraying the ozone water.

The ozone water ejection device of the present invention has a function of generating ozone inside, and can easily eject ozone water in which sufficient ozone is dissolved.

FIG. 1 is a schematic view of an ozone water ejection device according to an embodiment. FIG. 2 is a schematic cross-sectional view of a gas-liquid mixing section and a pressure release valve included in the ozone water ejection device of the embodiment. FIG. 3 is a schematic view showing how ozone water flows through the gas-liquid mixing portion of the ozone water ejection device of the embodiment. FIG. 4 is a schematic view of another example of the ozone water ejection device of the embodiment.

[Configuration of ozone water ejection device]
As shown in FIG. 1, the ozone water ejection device (ozone water spray) 100 of the present embodiment electrolyzes the raw material water into a container (substantially cylindrical bottle) 21 for accommodating the raw material water to generate ozone water. Provided in the flow path 35a between the electrolysis unit 22 to be generated, the ejection nozzle 26 for ejecting ozone water, the liquid feeding pump 25 for transporting ozone water to the ejection nozzle 26, and the liquid feeding pump 25 and the ejection nozzle 26. It is mainly composed of the gas-liquid mixing unit 40 obtained. The ozone water ejection device 100 of the present embodiment is a handy type small device, and the above-mentioned components other than the ejection nozzle 26 are housed in the spray housing 24 to which the ejection nozzle 26 is attached.

The spray housing 24 has a substantially cylindrical shape and an accommodating portion 24A in which the container 21 is accommodated, a grip portion 24B provided above the accommodating portion 24A and having a diameter smaller than that of the accommodating portion 24A, and a grip portion 24B. It has a head portion 24C provided above the above and to which the ejection nozzle 26 is attached. By gripping the grip portion 24B, the user can easily grip and use the ozone water ejection device 100 by hand. The liquid feed pump 25 and the gas-liquid mixing unit 40 are housed in the head unit 24C. The ejection nozzle 26 and the liquid feed pump 25 are connected by a connection pipe 34 having a flow path 35a formed therein, and a gas-liquid mixing portion 40 is provided in the middle of the flow path 35a. The electrolysis unit 22 and the liquid feed pump 25 are connected by a connection pipe 34 having a flow path 35b formed inside.

In FIG. 1, it is assumed that the ozone water ejection device 100 is mounted on a horizontal plane 90 (a plane perpendicular to the vertical direction). In FIG. 1, an arrow indicates a vertical direction parallel to the vertical direction. In the present specification, the terms "upper" and "lower" mean "upper" and "lower" in the vertical direction parallel to the vertical direction when the ozone water ejection device 100 is placed on a horizontal plane. The ejection nozzle 26, the liquid feed pump 25, and the gas-liquid mixing unit 40 are arranged above the container 21, and the container 21 is arranged below the ejection nozzle 26, the liquid feed pump 25, and the gas-liquid mixing unit 40. Be placed. Further, in the ozone water ejection device 100, the ozone water generated by the electrolysis unit 22 flows from the electrolysis unit 22 toward the ejection nozzle 26. Therefore, at a certain point between the electrolysis unit 22 and the ejection nozzle 26, the electrolysis unit 22 side may be described as "upstream" and the ejection nozzle 26 side may be described as "downstream".

The container 21 is a container for accommodating the raw material water, and may be a container fixed to the spray housing 24 or a removable cartridge type container. The cartridge type container is convenient and preferable because it can be removed from the spray housing 24, injected with raw water, and then attached and used. As the container 21, various materials such as resin, metal, glass, and ceramic can be used, and the container 21 is not particularly limited, but from the viewpoint of portability, a lighter weight resin is preferable.

In the present embodiment, as the container 21, a cartridge-type resin container described below is used. The container 21 is provided with an opening 21a having a reduced diameter at the upper end, and the opening 21a can be opened and closed by a screw structure by a lid 21b. By inserting the lid 21b into the packing 39, the lid 21b is fixed together with the container 21 inside the accommodating portion 24A of the spray housing 24. Further, the bottom of the container 21 is covered with a bottom lid 27, which is housed in the spray housing 24. The bottom lid 27 can be opened and closed by a lock mechanism (not shown).

The electrolysis unit 22 is not particularly limited as long as it has a mechanism for electrolyzing the raw material water contained in the container 21 to generate ozone and an electrolytic solution, and a general-purpose one can be used.

In this embodiment, the electrolysis unit 22 described below is used. The electrolysis unit 22 of the present embodiment has a substantially cylindrical elongated unit cover 22a having a water absorption port 28 for taking in raw material water at the lowermost end, an electrolytic module 30 housed therein, and a water absorption port in the unit cover 22a. It has a check valve 29 arranged between the 28 and the electrolytic module 30. The electrolytic module 30 has an anode (not shown) that generates oxygen gas and ozone gas when electrolyzing raw water, and a cathode (not shown) that generates hydrogen gas. The electrolysis module 30 may further be provided with a diaphragm (not shown) made of an ion exchange membrane between the cathode and the anode. By providing a diaphragm, substances generated at the cathode and anode are prevented from being consumed by the opposite electrodes, and even when pure water with low electrical conductivity is used as the raw material water, electrolysis proceeds quickly. Can be made to. In the electrolysis unit 22, a part of the generated ozone is dissolved in the electrolytic solution to generate ozone water. Then, a gas-liquid mixture containing ozone water, ozone gas, and the like flows out downstream of the electrolysis unit 22. As the electrolytic module 30, for example, a commercially available electrolytic module such as a spiral electrode manufactured by Denora Permerek Co., Ltd. may be used.

The electrolysis unit 22 is detachably attached to the lid 21b of the container 21. The lower end of the electrolysis unit 22 in which the water absorption port 28 is formed is arranged in the container 21, and the upper end protrudes upward from the lid 21b. Further, the electrolysis unit 22 is connected to the lithium ion battery 31 installed in the spray housing 24 via the circuit board 32. The circuit board 32 controls the voltage applied from the lithium ion battery 31 to the electrolysis unit 22. The ON / OFF of the voltage applied to the electrolysis unit 22 is switched by the power switch 33 attached to the grip portion 24B of the spray housing 24.

The ejection nozzle 26 is not particularly limited as long as it is a nozzle capable of ejecting ozone water, and a general-purpose ejection nozzle 26 can be used. The ejection nozzle may be a nozzle that ejects a straight water stream, a nozzle that sprays mist, or a nozzle that can switch between them. Further, the material of the wetted portion of the ejection nozzle 26 is not particularly limited as long as it is a material inert to ozone, such as metal, ceramics, and resin.

The liquid feed pump 25 is not particularly limited as long as it is a liquid feed pump capable of sending ozone water to the ejection nozzle, and a general-purpose pump can be used. The type of liquid feed pump is preferably a pulsation-free pump in order to stably and continuously eject ozone water. The material of the wetted portion of the liquid feed pump 25 is not particularly limited as long as it is a material inert to ozone, such as metal, ceramics, and resin.

The material forming the flow paths 35a and 35b is not particularly limited as long as it is a material inert to ozone, such as metal, ceramics, and resin.

The gas-liquid mixing unit 40 is provided in the flow path 35a extending in the first direction between the liquid feed pump 25 and the ejection nozzle 26, and promotes the dissolution and dispersion of ozone gas in ozone water. The mechanism by which the dissolution and dispersion of ozone gas are promoted will be described later. As shown in FIG. 2, the gas-liquid mixing unit 40 has an internal space 41. In the present embodiment, the internal space 41 has a substantially columnar shape extending in a direction orthogonal to the flow path 35a (a second direction orthogonal to the first direction, which is indicated by an arrow in FIG. 2). The internal space 41 is formed with an inlet 42 into which ozone water flows in from the liquid feed pump 25 and an outlet 43 in which ozone water flows out toward the ejection nozzle 26. When the ozone water is ejected from the ejection nozzle 26, the ozone water circulates in the internal space 41 from the inlet 42 toward the outlet 43, that is, from right to left in FIGS. 2 and 3. FIG. 3 shows the flow direction of ozone water with an arrow. The top 41a of the interior space 41 is above (higher) than the top 42a of the inflow port 42, thereby creating the top 41b of the interior space. That is, the internal space 41 is a space (upper part of the internal space) 41b above the top 42a of the inflow port and a space below the top 42a of the inflow port (flow path space) at the same height as the inflow port 42. ) 41c. As shown in FIG. 3, the ozone water 50 can circulate in the internal space 41 without filling the internal space 41, particularly the upper portion 41b of the internal space. The ozone gas 80 is separated above the internal space 41, and a gas-liquid interface 50a between the ozone gas 80 and the ozone water 50 is formed. The sizes of the inlet 42 and the outlet 43 may be the same or different. In this embodiment, the outlet 43 is made smaller than the inlet 42. By narrowing the flow path 35a to the outlet 43 and the subsequent ejection nozzle 26, the pressure of the ozone water sent to the ejection nozzle 26 increases, and the ozone water can be efficiently ejected.

The ratio H / h of the height H from the bottom 42b of the inlet to the top 41a of the internal space at the inlet 42 to the height h from the bottom 42b of the inlet to the top 42a of the inlet is, for example, 1. It is 1 to 4.0, preferably 1.5 to 3.0, and even more preferably 2.0 to 3.0. When the ratio H / h is equal to or higher than the lower limit of the above range, a sufficient space for the ozone gas 80 to exist in the internal space 41 can be sufficiently secured, and the dissolution and dispersion of the ozone gas in the ozone water can be further promoted. Further, for example, even if the user tilts the ozone water ejection device 100 from the state shown in FIG. 1, if the ratio H / h is equal to or higher than the lower limit of the above range, the ozone water ejection device 100 is used with respect to the height h of the inflow port. Since the height H of the internal space is sufficiently high, the ozone water 50 can circulate without filling the internal space 41. As a result, even if the user tilts the ozone water ejection device 100 and uses it, the dissolution and dispersion of ozone gas in ozone water can be promoted. Further, when the ratio H / h is not more than the upper limit of the above range, the volume of the internal space 41 does not become too large, and the pressure of the ozone gas existing in the internal space 41 together with the ozone water can be increased. As a result, the contact efficiency between the ozone water 50 and the ozone gas 80 at the gas-liquid interface 50a is further enhanced, and the dissolution and dispersion of the ozone gas in the ozone water can be further promoted.

The volume of the upper portion 41b of the internal space is, for example, 0.02 mm ³ to 575 mm ³ , preferably 10 mm ³ to 100 mm ³ . When the volume of the upper portion 41b of the internal space is equal to or greater than the lower limit of this range, a sufficient space for the ozone gas 80 to exist in the internal space 41 can be sufficiently secured, and the dissolution and dispersion of the ozone gas in the ozone water can be further promoted. Further, when the volume of the upper portion 41b of the internal space is equal to or less than the upper limit of the above range, the pressure of the ozone gas existing together with the ozone water in the upper portion 41b of the internal space can be increased, and the dissolution and dispersion of the ozone gas in the ozone water can be further promoted. ..

Further, the maximum value D of the length of the internal space 41 in the extending direction (first direction shown in FIG. 2) of the flow path 35a with respect to the height h from the bottom portion 42b of the inflow port to the top portion 42a of the inflow port. The ratio D / h is, for example, 0.1 to 3.0, preferably 0.2 to 2.0. When the ratio D / h is at least the lower limit of the above range, the area of the gas-liquid interface 50a between the ozone gas 80 and the ozone water 50 can be sufficiently widened, and the dissolution and dispersion of the ozone gas in the ozone water can be further promoted. Further, when the ratio D / h is not more than the upper limit value in the above range, the volume of the internal space 41 does not become too large, and the pressure of the ozone gas existing in the internal space 41 together with the ozone water can be increased. This makes it possible to further promote the dissolution and dispersion of ozone gas in ozone water.

Further, the length of the internal space 42 in the extending direction (first direction shown in FIG. 2) of the flow path 35a at the height H from the bottom portion 42b of the inflow port to the top 41a of the internal space 41 at the inflow port 42. The ratio H / D to the maximum value D is, for example, 0.3 to 40, preferably 0.5 to 15. When the ratio H / D is within the above range, the area of the gas-liquid interface 50a between the ozone gas 80 and the ozone water 50 and the volume of the internal space 41 can both be set to appropriate sizes, whereby ozone water can be set to an appropriate size. The dissolution and dispersion of ozone gas in the water can be further promoted.

The size of the height H, the height h, and the maximum value D of the length of the internal space 42 in the gas-liquid mixing unit 40 is not particularly limited, and the ratio H / h, the ratio D / h, and the ratio H / D are described above. It can be appropriately designed so as to be within the preferable range. Considering that the ozone water ejection device 100 is a handy type small device, for example, the height H may be 2.7 to 12 mm, and the height h may be 0.2 to 5.0 mm. The maximum value D of the length of the internal space 42 may be 0.25 to 9 mm.

As shown in FIG. 3, when the ozone water 50 circulates in the internal space 41, the area of the gas-liquid interface 50a between the ozone gas 80 and the ozone water 50 is, for example, 0.1 to 64 mm ² , preferably 0. It may be 3 to 29 mm ² . When the area of the gas-liquid interface 50a is equal to or greater than the lower limit of the above range, the dissolution and dispersion of ozone gas in ozone water can be further promoted. When the area of the gas-liquid interface 50a is equal to or less than the upper limit of the above range, the volume of the internal space 41 does not become too large, and the pressure of the ozone gas existing in the internal space 41 together with the ozone water can be increased. This makes it possible to further promote the dissolution and dispersion of ozone gas in ozone water.

In the present embodiment, the "height h from the bottom 42b of the inflow port to the top 42a of the inflow port" is the height (length) in the second direction shown in FIG. 2, and when the inflow port 42 is circular. , Equal to its diameter. Further, the "height H from the bottom portion 42b of the inflow port to the top 41a of the internal space at the inflow port 42" is the height (length) in the second direction shown in FIG. 2, and is from the bottom portion 42b of the inflow port. It is the height to the bottom surface above the substantially cylindrical internal space 41, and is the sum of the height of the upper portion 41b of the internal space and the height of the flow path space 41c. The "maximum value D of the length of the internal space 41" is equal to the diameter of the bottom surface of the substantially cylindrical internal space 41. Further, the area of the gas-liquid interface 50a between the ozone gas 80 and the ozone water 50 has a cross section parallel to the horizontal plane 90 of the substantially cylindrical internal space 41 when the gas-liquid interface 50a is parallel to the horizontal plane 90 (see FIG. 1). Equal to cross-sectional area. Further, the material of the wetted portion of the gas-liquid mixing portion 40 is not particularly limited as long as it is a material inert to ozone, such as metal, ceramics, and resin.

The ozone water ejection device 100 may further have a pressure release valve (relief valve) 60 that is opened when the pressure in the flow path 35a is equal to or higher than a predetermined pressure and is closed when the pressure in the flow path 35a is lower than a predetermined pressure. Along with ozone water, ozone gas that is not dissolved in ozone water also flows in the flow path 35a. By providing the pressure release valve 60, it is possible to prevent the inside of the flow path 35a from exceeding a predetermined pressure and enhance the safety of the ozone water ejection device 100. The type of the pressure release valve 60 is not particularly limited, and general-purpose valves such as a ball check valve, a swing check valve, and a wafer check valve can be used. The material of the pressure release valve is not particularly limited as long as it is a material that is inert to ozone, such as metal, ceramics, and resin.

In the present embodiment, as the pressure release valve 60, a ball check valve including a ball 60a and a spring 60b is used. The ozone water ejection device 100 has a branch portion 70, and a branch flow path 35c extending downward at right angles to the flow path 35a is formed in the branch portion 70. That is, the branch flow path 35c branches from the flow path 35a and extends downward in the second direction. The pressure release valve 60 is provided in the branch flow path 35c in the branch portion 70. The branch flow path 35c has a reduced diameter portion 35d whose flow path diameter is reduced. The pressure release valve 60 is arranged below the reduced diameter portion 35d. The ball 60a is urged toward the upper reduced diameter portion 35d by the spring 60b. When the pressure in the flow path 35a is less than the predetermined pressure, the reduced diameter portion 35d is blocked by the ball 60a. Then, when the pressure in the flow path 35a becomes equal to or higher than a predetermined pressure, the ball 60a moves downward and the reduced diameter portion 35d is opened.

In the present embodiment, the internal space 41 of the gas-liquid mixing unit 40 and the branch flow path 35c provided with the pressure release valve 60 communicate with each other. This makes it possible to prevent the pressure release valve 60 from being opened below a predetermined pressure. This mechanism will be described later. It is preferable that the internal space 41 and the branch flow path 35c are arranged side by side in the second direction and communicate with each other. In the present embodiment, both the internal space 41 and the branch flow path 35c have a substantially columnar shape, and the central axis L of the internal space 41 and the central axis M of the branch flow path 35c are on the same axis. The diameter of the bottom surface of the internal space 41 and the diameter of the bottom surface of the branch flow path 35c may be the same or different. In the present embodiment, the diameter of the internal space 41 and the diameter of the branch flow path 35c are substantially the same. That is, the internal space 41 and the branch flow path 35c form one substantially columnar shape extending in the second direction.

The material and manufacturing method of the gas-liquid mixing section 40 and the branch section 70 are not particularly limited, and may be manufactured by cutting, for example, plastic, metal, or the like. Further, the gas-liquid mixing portion 40 having the internal space 41 and the branch portion 70 having the branch flow path 35c may be integrally molded by, for example, a resin. That is, the gas-liquid mixing portion 40 and the branch portion 70 may be an integrally molded body. As a result, the number of parts can be reduced, space can be saved, and costs can be reduced.

As shown in FIG. 1, the ozone water ejection device 100 of the present embodiment may further include a recovery flow path 35e for connecting the pressure release valve 60 and the container 21. As a result, when the pressure release valve 60 is opened, ozone water can be recovered from the pressure release valve 60 to the container 21 via the recovery flow path 35e.

Further, as shown in FIG. 1, the ozone water ejection device 100 of the present embodiment may be mounted on the mounting table 36 when not in use. An electromagnetic induction coil 36a is provided inside the mounting table 36. Further, an electromagnetic induction coil 27a is provided in the bottom lid 27 at a position facing the electromagnetic induction coil 36a in the mounting table 36. By inserting the plug 37 connected to the electromagnetic induction coil 36a into an outlet (not shown), the lithium ion battery 31 is charged by electromagnetic induction. Further, LEDs 38a and 38b are attached to the side surface of the spray housing 24 to distinguish whether or not ozone water is being generated by electrolysis, and to indicate the remaining battery level, the electrode replacement sign, and the electrode cleaning sign. It is possible.

[How to use, action and effect of ozone water ejection device]
Next, a method of using the ozone water ejection device 100 of the present embodiment, and its action / effect will be described. The user holds the ozone water ejection device 100 in his hand, removes the lock mechanism of the bottom lid 27, removes the bottom lid 27, and takes out the container 21. Then, the lid 21b is removed, purified water is injected, the lid 21b is tightened, the container 21 is placed in the original position again, the bottom lid 27 is closed, and the container 21 is locked by the locking mechanism.

With the grip portion 24B of the spray housing 24 of the device in which the container 21 filled with the raw material water is set so that the ejection direction of the ejection nozzle 26 faces the member to be sterilized, the power switch 33 is pressed to turn it on. Make it a state. As a result, the liquid feed pump 25 is driven, the raw material water flows in from the water suction port 28, the liquid is sent into the electrolysis unit 22, and the lithium ion battery 31 is sent to the electrolysis unit 22 via the circuit board 32. A voltage is applied. The voltage applied to the electrolysis unit 22 is controlled by the circuit board 32 so that a predetermined current value flows constantly through the electrodes. As a result, the raw material water is electrolyzed by the electrolytic module 30, and a gas-liquid mixture containing ozone water and ozone gas is produced. The gas-liquid mixture flows into the gas-liquid mixing unit 40 provided downstream of the electrolysis unit 22.

In the gas-liquid mixing unit 40, the dissolution and dispersion of ozone gas in the ozone water of the gas-liquid mixture are promoted. As a result, the ozone concentration in the ozone water flowing downstream from the gas-liquid mixing unit 40 is higher than the ozone concentration in the ozone water flowing in from the upstream side of the gas-liquid mixing unit 40. This mechanism is unknown, but it is speculated as follows. As shown in FIG. 3, the gas-liquid mixing unit 40 has an internal space 41 in which the ozone water 50 flows without being filled. When the gas-liquid mixture passes through the internal space 41, the ozone gas 80 is separated above the internal space 41 to form a gas-liquid interface 50a between the ozone gas 80 and the ozone water 50. It has been observed that the gas-liquid interface 50a vibrates violently as the gas-liquid mixture passes through the internal space 41. It is presumed that this enhances the contact efficiency between the ozone water 50 and the ozone gas 80 at the gas-liquid interface 50a, and promotes the dissolution and dispersion of the ozone gas 80 in the ozone water 50. The mechanism described above is speculative and does not limit the present invention in any way.

The high-concentration ozone water thus generated is sent to the ejection nozzle 26 and ejected from the ejection nozzle 26.

By providing the gas-liquid mixing unit 40, the ozone water ejection device 100 of the present embodiment described above can produce high-concentration ozone water even though it is a small device, and can efficiently eject ozone water from the ejection nozzle 26. The ozone water ejection device 100 increases the ozone concentration of the ozone water to be ejected, for example, about 1.3 times to about 2 times, or about 1.5 times, as compared with the case where the gas-liquid mixing unit 40 is not provided. It can be increased by about 2 times. In the gas-liquid mixing unit 40, the dissolution and dispersion of ozone gas in ozone water are promoted, so that the concentration of ozone gas ejected from the ejection nozzle 26 can be reduced. As a result, the safety to the human body is increased and the burden on the environment is reduced. Further, since the gas-liquid mixing unit 40 has a simple structure having an internal space 41, the pressure loss is small. Therefore, ozone water can be efficiently ejected from the ejection nozzle 26. In particular, when ozone water is sprayed from the ejection nozzle 26, the ozone water ejection device 100 of the present embodiment is useful. When the ozone water is sprayed from the ejection nozzle 26, it is necessary to supply the high pressure ozone water to the ejection nozzle 26. Since the ozone water ejection device 100 of the present embodiment can send ozone water having sufficient pressure to the ejection nozzle 26, it is possible to spray high-concentration ozone water.

In the ozone water ejection device 100 of the present embodiment, a pressure release valve 60 may be further provided in the branch flow path 35c, or the branch flow path 35c and the internal space 41 may communicate with each other. By providing the pressure release valve 60, the safety of the ozone water ejection device 100 can be enhanced. Further, by communicating the internal space 41 and the branch flow path 35c, it is possible to prevent the pressure release valve 60 from being opened below a predetermined pressure. This mechanism is unknown, but it is speculated as follows. One of the causes of the pressure release valve 60 being opened below a predetermined pressure is that a small amount of contaminants contained in the raw material water are contained in the ball 60a of the pressure release valve 60 and the reduced diameter portion 35d of the branch flow path 35c. It is possible that the gap between the two and the other will be clogged. The pressure release valve 60 is not opened only if the gap is clogged with contaminants. However, it is considered that when a gas such as ozone gas contained in the gas-liquid mixture enters the gap, the gap expands and the pressure release valve 60 is opened at a pressure lower than a predetermined pressure. When the pressure release valve 60 is opened below a predetermined pressure, ozone water having sufficient pressure cannot be sent to the ejection nozzle 26, and ozone water cannot be efficiently ejected from the ejection nozzle 26. On the other hand, in the present embodiment, as shown in FIG. 3, the branch flow path 35c and the internal space 41 are communicated with each other. As a result, the gas such as ozone gas 80 in the gas-liquid mixture is separated and moves above the internal space 41. Since only the ozone water 50 exists in the vicinity of the pressure release valve 60 existing below the internal space 41, it becomes difficult for a gas such as ozone gas 80 to enter the gap between the ball 60a and the reduced diameter portion 35d. This makes it possible to prevent the pressure release valve 60 from being opened below a predetermined pressure. Further, when the internal space 41 and the branch flow path 35c are arranged side by side in the second direction and communicated with each other, the gas such as ozone gas 80 easily moves above the internal space 41, so that this effect is further enhanced. Be promoted. The mechanism described above is speculative and does not limit the present invention in any way.

In the ozone water ejection device 100 of the present embodiment described above, as shown in FIGS. 1 to 3, the first direction in which the flow path 35a extends is perpendicular to the vertical direction. That is, the flow path 35a extends in the horizontal direction (direction parallel to the horizontal plane 90). However, this embodiment is not limited to this. As long as the ozone water can flow through the internal space 41 without being filled, the flow path 35a may be inclined with respect to the horizontal direction, for example, as in the ozone water ejection device 200 shown in FIG. Further, in the present embodiment described above, one gas-liquid mixing unit 40 is provided, but the present embodiment is not limited to this. A plurality of gas-liquid mixing units 40 may be provided in order to further promote the dissolution and dispersion of ozone gas in ozone water. Further, in the present embodiment described above, the branch flow path 35c and the pressure release valve 60 are provided below the internal space 41 of the gas-liquid mixing section 40, but the present embodiment is not limited to this. Only the internal space 41 may be formed in the gas-liquid mixing portion 40 without the branch flow path 35c and the pressure release valve 60.

Further, in the ozone water ejection device 100 of the present embodiment described above, as shown in FIG. 2, the internal space 41 of the gas-liquid mixing unit 40 has a substantially columnar shape, but the present embodiment is not limited to this. .. The shape is not limited as long as the internal space 41 can be circulated without being filled with ozone water. For example, the shape of the internal space 41 may be a cube, a trapezoid, a cone, a pyramid, or the like.

Next, examples of the present invention will be described together with comparative examples. The present invention is not limited or limited by the following examples and comparative examples.

[Example 1]
Ozone water was ejected using the ozone water ejection device 100 shown in FIG. 1, and the ozone concentration in the ejected ozone water (hereinafter, appropriately referred to as “ozone water concentration”) was measured.

<About the gas-liquid mixing part of the ozone water ejection device>
In the ozone water ejection device used in this embodiment, the height H from the bottom of the inlet to the top of the internal space at the inlet of the gas-liquid mixing section is 3.3 mm, and from the bottom of the inlet to the top of the inlet. The height h of was set to 3 mm. Therefore, the ratio H / h was 1.1. The maximum value D of the length of the internal space in the extending direction of the flow path (the first direction shown in FIG. 2) was set to 4.3 mm.

<Measurement of ozone water concentration>
Ozone water was ejected from a glass plate standing substantially perpendicular to the horizontal plane from the direction perpendicular to the glass plate using an ozone water ejection device, and ozone water falling along the glass plate was collected in an empty beaker. During the ozone water ejection, the ozone gas was blown off by blowing air from the side to the extent that the ozone water was not blown out of the beaker, and ozone derived from the ozone gas was prevented from entering the beaker. The ozone concentration of the collected ozone water was quantified by absorptiometry using a spectrophotometer (absorption wavelength: 258 nm). The results are shown in Table 1. In addition, Table 2 shows the height H, the height h, the ratio H / h, and the ratio of the ozone water concentration of each example to the ozone water concentration of the comparative example.

In this example, ion-exchanged water was used as the raw material water, the raw material water was electrolyzed with a current of 0.6 A, and ozone water was ejected at a spray speed of 70 mL / min. The beaker receiving the spout was washed with a neutral detergent in advance, then with purified water, and finally co-washed with the spout, and then the above measurement was performed.

[Examples 2 to 6]
The ozone concentration (ozone) in the ozone water ejected from the ozone water ejection device by the same method as in Example 1 except that the ozone water ejection device in which the height H in the gas-liquid mixing section was changed to the value shown in Table 1 was used. Water concentration) was measured. The results are shown in Table 1.

[Comparison example]
In the ozone water ejected from the ozone water ejector by the same method as in Example 1 except that the ozone water ejector having the same height H and the height h (3 mm) in the gas-liquid mixing section was used. The ozone concentration (ozone water concentration) was measured. The results are shown in Table 1.

As shown in Table 1, in Examples 1 to 6 (H / h = 1.1 to 4.0) in which the ratio H / h exceeds 1, the ozone water concentration is high, and among them, the ratio H / h is 1. In Examples 2 to 5, which are 5 to 3, the ozone water concentration was particularly high. The ozone water concentration of Examples 1 to 6 is 1.33 to 2.08 times the ozone water concentration of Comparative Example having a ratio H / h of 1, and the ozone water concentration of Examples 2 to 5 is Comparative Example. It was 1.75 to 2.08 times the ozone water concentration of. In Examples 1 to 6, it is presumed that the ozone water circulated in the internal space of the gas-liquid mixing portion without being filled with ozone water, thereby promoting the dissolution and dispersion of ozone gas in the ozone water.

On the other hand, in the comparative example, since the height H and the height h of the gas-liquid mixing portion are the same size (H / h = 1), ozone water fills the internal space of the gas-liquid mixing portion and circulates. Therefore, it is presumed that the ozone water concentration was low.

[Examples 7 to 11]
Examples except that an ozone water ejection device was used in which the height H in the gas-liquid mixing section was 8.5 mm, the height h was 3 mm, and the maximum value D of the length of the internal space was changed to the value shown in Table 2. The ozone concentration (ozone water concentration) in the ozone water ejected from the ozone water ejector was measured by the same method as in 1. The results are shown in Table 2. At the same time, the maximum value D of the length of the internal space of the gas-liquid mixing portion, the height h, the ratio D / h, the area of the gas-liquid interface (the area of the gas-liquid interface 50a shown in FIG. 3), and the ozone of the comparative example. Table 2 shows the ratio of the ozone water concentration of each example to the water concentration.

As shown in Table 2, Examples 7 to 11 having a ratio D / h of 0.1 to 3.0 have a high ozone water concentration, and above all, a ratio D / h of 0.2 to 2.0. In Examples 8 to 10, the ozone water concentration was particularly high. The ozone water concentration of Examples 7 to 11 is 1.33 to 1.92 times the ozone water concentration of Comparative Example, and the ozone water concentration of Examples 8 to 10 is 1.75 to the ozone water concentration of Comparative Example. It was ~ 1.92 times.

In Examples 7 to 11 having a high ozone water concentration, the area of the gas-liquid interface is in the range of 0.1 to 64 mm ² , and in Examples 8 to 10 having a particularly high ozone water concentration, the area of the gas-liquid interface is in the range of 0.1 to 64 mm 2. Was in the range of 0.3 to 29 mm ² .

[Examples 12 to 16]
The same as in Example 1 except that the ozone water ejection device was used in which the height h in the gas-liquid mixing portion was set to 3 mm and the maximum value D of the height H and the length of the internal space was changed to the values shown in Table 3. By the method, the ozone concentration (ozone water concentration) in the ozone water ejected from the ozone water ejector was measured. The results are shown in Table 3. In addition, Table 3 shows the height H of the gas-liquid mixing portion, the maximum value D of the length of the internal space, the ratio H / D, and the ratio of the ozone water concentration of each example to the ozone water concentration of the comparative example.

As shown in Table 3, Examples 12 to 16 having a ratio H / D of 0.3 to 40 have a high ozone water concentration, and in particular, Examples 13 to 15 having a ratio H / D of 0.5 to 15. In No. 15, the ozone water concentration was particularly high. The ozone water concentration of Examples 12 to 16 is 1.33 to 1.92 times the ozone water concentration of Comparative Example, and the ozone water concentration of Examples 13 to 15 is 1.75 of the ozone water concentration of Comparative Example. It was ~ 1.92 times.

The ozone water ejection device of the present invention can produce high-concentration ozone water and can sufficiently eject the produced ozone water. Since ozone water can be ejected, it can be used for disinfecting, disinfecting, and sterilizing materials, instruments, and hands of workers in medical sites and clean rooms. The high-concentration ozone water ejected by the ozone water ejection device of the present invention can be used for disinfection, sterilization, and sterilization of bacteria and viruses that normally use alcohol, and further represents norovirus that is difficult to deal with with alcohol. It is also possible to disinfect, sterilize, and sterilize non-enveloped viruses. In addition, disinfection, sterilization, and sterilization using the ozone water ejection device of the present invention are less likely to cause rough hands, which is a problem in alcohol disinfection, and workers who are allergic to alcohol and the use of alcohol are religiously contraindicated. It can also be done by the user. In this way, the ozone water ejection device of the present invention can open up a new market.

21 ... container, 22 ... electrolysis unit, 24 spray housing, 25 ... liquid feed pump, 26 ... ejection nozzle, 35a, 35b ... flow path, 35c ... branch flow path , 40 ... gas-liquid mixing section, 41 ... internal space, 50 ... ozone water, 50a ... gas-liquid interface, 60 ... pressure release valve (relief valve), 70 ... branch section , 80 ... Ozone gas, 100, 200 ... Ozone water ejection device

Claims (7)

It is an ozone water ejection device.
It is equipped with an ejection nozzle that ejects ozone water and a housing to which the injection nozzle is attached.
In the housing
A container for storing raw water and
An electrolysis unit that electrolyzes the raw material water to generate ozone water,
A liquid feed pump that transports the ozone water to the ejection nozzle,
It has a gas-liquid mixing section provided in the flow path between the liquid feed pump and the ejection nozzle and having an internal space through which ozone water flows without being filled.
In the internal space, an inlet in which the ozone water flows in from the liquid feed pump and an outlet in which the ozone water flows out toward the ejection nozzle are formed.
In the internal space of the gas-liquid mixing portion, the area of the gas-liquid interface formed by the ozone water when the ozone water passes is 0.1 to 64 mm ² .
An ozone water ejection device having a height from the bottom of the inlet to the top of the internal space of 2.7 to 12 mm. The ozone water ejection device according to claim 1, wherein the top of the internal space is above the top of the inlet. The ratio (H / h) of the height (H) from the bottom of the inlet to the top of the interior space at the inlet to the height (h) from the bottom of the inlet to the top of the inlet. The ozone water ejection device according to claim 2, wherein the ozone water ejection device is 1.1 to 4.0. The ratio (D / h) of the maximum value (D) of the length of the internal space in the extending direction of the flow path to the height (h) from the bottom of the inlet to the top of the inlet is. The ozone water ejection device according to claim 2 or 3, which is 0.1 to 3.0. The ratio (H) of the height (H) from the bottom of the inlet to the top of the interior space at the inlet to the maximum value (D) of the length of the interior space in the extending direction of the flow path. The ozone water ejection device according to any one of claims 2 to 4, wherein / D) is 0.3 to 40. The ozone water ejection device according to any one of claims 1 to 5, wherein the internal space has a substantially columnar shape extending in a direction orthogonal to the flow path. The ozone water ejection device is
Inside, a branch portion having a branch flow path that extends downward at right angles to the flow path, and a branch portion.
Further having a pressure release valve provided in the branch flow path, which is opened when the pressure in the flow path exceeds a predetermined pressure and is closed when the pressure in the flow path becomes less than a predetermined pressure.
The ozone water ejection device according to any one of claims 1 to 6, wherein the branch flow path and the internal space communicate with each other.

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