WO2018003557A1 - Procédé et dispositif de génération de brume, et procédé de stérilisation/désodorisation - Google Patents

Procédé et dispositif de génération de brume, et procédé de stérilisation/désodorisation Download PDF

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Publication number
WO2018003557A1
WO2018003557A1 PCT/JP2017/022377 JP2017022377W WO2018003557A1 WO 2018003557 A1 WO2018003557 A1 WO 2018003557A1 JP 2017022377 W JP2017022377 W JP 2017022377W WO 2018003557 A1 WO2018003557 A1 WO 2018003557A1
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Prior art keywords
mist
ozone
ufb
containing liquid
liquid
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PCT/JP2017/022377
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English (en)
Japanese (ja)
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山本　真樹
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シャープ株式会社
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/10—Preparation of ozone

Definitions

  • Embodiment of this invention is related with a mist production
  • Embodiments of the present invention also relate to a mist generation method and a sterilization / deodorization method.
  • ozone gas is a gas and cannot be used in an open environment.
  • ozone gas is taken into the alveoli of the human body by breathing and may adversely affect the human body.
  • ozone water a method of spraying water in which ozone is dissolved
  • ozone water a method of spraying water in which ozone is dissolved
  • Patent Document 1 discloses ozone water whose ozone holding power is improved by containing ozone in the form of fine bubbles. Patent Document 1 describes that a sufficient ozone concentration is maintained for one month or longer.
  • Bubbles with a diameter of about 10 ⁇ m to 60 ⁇ m are called “micro bubbles”, and bubbles with a diameter of 1 ⁇ m or less are called “ultra fine bubbles (UFB)”.
  • UFB ultra fine bubbles
  • bubbles having a diameter of 1 ⁇ m or less are referred to as “UFB”
  • a liquid containing UFB is referred to as “UFB-containing liquid”
  • ozone UFB-containing liquid a liquid containing UFB containing ozone gas
  • an ozone UFB-containing liquid is obtained by applying a physical stimulus to microbubbles to generate UFB.
  • the inventor of the present application has made various studies on a method for sterilization and deodorization by spraying an ozone UFB-containing liquid as a mist on an object.
  • the mist sprayed on the object does not have sufficient sterilizing power and ozone concentration by simply using the ozone UFB-containing liquid (the sterilizing power and ozone concentration of the original ozone UFB-containing liquid are not sufficiently maintained). I found out there was a fear.
  • Embodiments of the present invention have been made in view of the above problems, and the object thereof is a mist generating apparatus and a mist generating method capable of spraying a mist having sufficient sterilizing power and / or ozone concentration onto an object. Is to provide.
  • a mist generating apparatus includes a storage unit that stores an ozone UFB-containing liquid that is a liquid containing an ultrafine bubble containing ozone gas, and a mist that contains the ozone UFB-containing liquid stored in the storage unit.
  • a mist generating unit that sprays as a mist having an average diameter of 10 ⁇ m to 1000 ⁇ m.
  • Another mist generating apparatus generates an ozone UFB-containing liquid that is a liquid containing an ozone gas generating unit that generates ozone gas and an ultrafine bubble that includes the ozone gas generated by the ozone gas generating unit.
  • the mist generating device further includes a storage unit that stores the ozone UFB-containing liquid generated by the ozone UFB-containing liquid generating unit.
  • a mist generation method is a mist generation method for generating mist from a liquid, the step (A) of preparing an ozone UFB-containing liquid that is a liquid containing ultrafine bubbles including ozone gas, and Spraying the ozone UFB-containing liquid as a mist having a mist average diameter of 10 ⁇ m or more and 1000 ⁇ m or less.
  • the step (A) includes the step (A-1) of generating the ozone gas, and the step of generating the ozone UFB-containing liquid using the ozone gas generated in the step (A-1). (A-2).
  • the object is sterilized and / or deodorized by spraying the mist on the object using the mist generation method.
  • a mist generating apparatus and a mist generating method capable of spraying a mist having a sufficient sterilizing power and / or ozone concentration onto an object are provided.
  • FIG. 1 is a diagram schematically showing a sterilization / deodorization system 1 according to an embodiment of the present invention. It is a figure which shows typically a mode that the ozone UFB containing liquid 7 is mist-ized by the sterilization and deodorizing system 1.
  • FIG. It is a graph which shows the relationship between mist average diameter [micrometer], ozone concentration decreasing rate [%], and Escherichia coli survival rate. It is a graph which shows the relationship between mist average diameter [micrometer] and ozone concentration decreasing rate [%].
  • the inventor of the present application conducted a sterilization / deodorization method for spraying an ozone UFB-containing liquid as a mist on an object under various conditions, and performed detailed studies on the sterilization power and ozone concentration of the mist.
  • the mist size centimeter average diameter
  • the mist has sufficient sterilizing power and ozone concentration (the sterilizing power and ozone concentration of the original ozone UFB-containing liquid are sufficiently maintained.
  • This invention is made
  • the mist generation method in this embodiment includes a step (A) of preparing an ozone UFB-containing liquid that is a liquid containing UFB containing ozone gas, and a step (B) of spraying the ozone UFB-containing liquid as a mist on an object. Is included.
  • the bubbles contained in the ozone UFB-containing liquid prepared in step (A) contain bubbles having a diameter of 1 ⁇ m or less, that is, UFB.
  • UFB-containing liquid means a liquid having an arithmetic average value of the diameter of contained particles (including bubbles) of 1 ⁇ m or less.
  • the average diameter of the mist sprayed in step (B) is set within a specific range. Specifically, the mist average diameter (details will be described later for the definition) is not less than 10 ⁇ m and not more than 1000 ⁇ m.
  • the “mist average diameter” means not a value at the position of the spray port but a value at the position of the object.
  • the ozone UFB-containing liquid is sprayed on the object as a mist having a mist average diameter of 10 ⁇ m or more and 1000 ⁇ m or less.
  • the sterilizing power and ozone concentration of the mist can be sufficiently increased (the sterilizing power and ozone concentration of the original ozone UFB-containing liquid can be sufficiently maintained).
  • step (A) an ozone UFB-containing liquid may be prepared. That is, step (A) includes, for example, a step (A-1) for generating ozone gas, and a step (A-2) for generating an ozone UFB-containing liquid using the ozone gas generated in step (A-1). May be included. Alternatively, a prepared ozone UFB-containing liquid may be obtained in step (A).
  • the mist generating method in this embodiment is preferably used for a sterilization / deodorization method.
  • the object By spraying the mist onto the object using the mist generating method of the present embodiment, the object can be sterilized and / or deodorized.
  • FIG. 1 is a diagram schematically showing a sterilization / deodorization system 1.
  • the sterilization / deodorization system 1 includes a two-fluid nozzle 2, a liquid feed pump 3, a compressor 4, a pressure gauge 5, and a pressure reducing valve (pressure adjusting valve) 6, as shown in FIG.
  • the sterilization / deodorization system 1 sprays the ozone UFB-containing liquid 7 on the object 9 as a mist 8 from the two-fluid nozzle 2.
  • the object 9 is, for example, a restaurant appliance, various articles in the home, a part of the human body (for example, a hand), or the like.
  • the ozone UFB-containing liquid 7 there are many bubbles (UFB) having a diameter of 1 ⁇ m or less containing ozone gas.
  • the diameter of bubbles in the liquid is about 10 ⁇ m to 60 ⁇ m (that is, in the case of microbubbles)
  • such bubbles (microbubbles) slowly rise in the liquid and contract and disappear.
  • most of the bubbles containing ozone gas are bubbles (UFB) having a diameter of 1 ⁇ m or less, and exist very stably in the liquid.
  • the two-fluid nozzle 2 is a spray nozzle that mixes and blows out compressed air and liquid divided into two systems.
  • the two-fluid nozzle 2 can control the average diameter of the mist 8 by controlling the air pressure and the liquid pressure.
  • the two-fluid nozzle 2 is suitable for miniaturization of the mist 8 because the liquid is pulverized and misted by a high-speed airflow of compressed air.
  • an internal mixed internal gas type method can be suitably used.
  • the compressed air flows in the central portion of the nozzle and the liquid flows in the outer peripheral portion, whereby the compressed air and the liquid are mixed and mist is formed.
  • the internal mixed internal air type has the advantage that it is very resistant to clogging by liquid.
  • the liquid feed pump 3 feeds the ozone UFB-containing liquid 7 to the two-fluid nozzle 2 at a desired pressure in order to spray the ozone UFB-containing liquid 7 as a mist 8 from the two-fluid nozzle 2.
  • the liquid feed pump 3 can adjust the liquid pressure of the ozone UFB-containing liquid 7 sent to the two-fluid nozzle 2 by adjusting the rotation speed of the motor.
  • a pump with no pulsation that can be adjusted to a low flow rate at a high discharge pressure (for example, the maximum discharge pressure is about 0.5 MPa) can be used.
  • the pressure gauge 5 is provided between the liquid feed pump 3 and the two-fluid nozzle 2, and detects and monitors the pressure of the ozone UFB-containing liquid 7 sent to the two-fluid nozzle 2.
  • the liquid feed pump 3 sets the liquid pressure of the ozone UFB-containing liquid 7 to a desired magnitude based on the detection value of the pressure gauge 5.
  • the compressor 4 sends compressed air necessary for mist formation of the ozone UFB-containing liquid 7 with the two-fluid nozzle 2 to the two-fluid nozzle 2.
  • an oil-free compressor having a high output (for example, a maximum discharge pressure of about 0.8 MPa) can be suitably used.
  • the compressed air from the compressor 4 is cleaned through an air filter (not shown), and then set to a desired pressure by the pressure reducing valve 6 and sent to the two-fluid nozzle 2.
  • the mist 8 is sprayed from the two-fluid nozzle 2 so that the average diameter at the position of the object 9 is 10 ⁇ m or more and 1000 ⁇ m or less.
  • the mist 8 in a state in which the sterilizing power and / or the ozone concentration of the ozone UFB-containing liquid 7 is sufficiently maintained is sprayed on the object 9, a wide range of objects 8 can be removed with a small amount of the ozone UFB-containing liquid 7. It can be sterilized and deodorized.
  • the verification result of a mist average diameter, bactericidal power, and ozone concentration is mentioned later.
  • the correlation between the air pressure and the liquid pressure entering the two-fluid nozzle 2 and the average diameter of the mist 8 sprayed from the two-fluid nozzle 1 will also be described later.
  • FIG. 2 schematically shows how the ozone UFB-containing liquid 7 is misted by the sterilization / deodorization system 1.
  • the ozone UFB containing liquid 7 contains many UFB7u, as shown in FIG.
  • the mist 8 generated from the ozone UFB-containing liquid 7 by the sterilization / deodorization system 1 has an average diameter of 10 ⁇ m or more and 1000 ⁇ m or less.
  • the mist 8 also contains UFB8u.
  • a pressure adjustment valve may be provided between the two-fluid nozzle 2 and the liquid feed pump 3 instead of the pressure gauge 5, or a pressure adjustment valve may be provided in addition to the pressure gauge 5.
  • a pressure gauge 5 nor the pressure regulating valve may be provided.
  • a pressure gauge may be provided between the two-fluid nozzle 2 and the compressor 4 instead of the pressure reducing valve (pressure adjusting valve) 6, or a pressure gauge may be provided in addition to the pressure reducing valve 6.
  • the pressure reducing valve 6 and the pressure gauge need not be provided.
  • Table 1 shows the pH, UFB average diameter [nm], UFB standard deviation [nm], UFB density [units / ml], and ozone concentration [mg / L] for the ozone UFB-containing liquids of conditions (1) and (2). ]It is shown.
  • UFB average diameter is an arithmetic average value of the diameters of all particles (including UFB) present in the liquid.
  • UFB standard deviation is the standard deviation of the diameter of all particles (including UFB) present in the liquid.
  • UFB density is the number of particles (including UFB) present per 1 ml of liquid.
  • the UFB average diameter, UFB standard deviation, and UFB density were measured using a nanoparticle diameter / particle number measuring device “Nanosite LM10” manufactured by Nippon Quantum Design Co., Ltd.
  • the UFB average diameter, UFB standard deviation, and UFB density were measured at least three times to obtain the average value in order to reduce variation in measured values.
  • the ozone concentration was measured using a portable absorptiometer “DR850” manufactured by Toa DKK Corporation and an ozone reagent “HACH1186”.
  • the ozone concentration was also an average value of three measured values in order to reduce variation in the measured values.
  • the ozone UFB containing liquid of the condition (1) whose main component is water was prepared.
  • the pH is 7.7
  • the UFB average diameter is 119.9 nm
  • the UFB standard deviation is 39.7 nm
  • the UFB density is 9.29 ⁇ 10 8 pieces. / Ml
  • ozone concentration was 0.27 mg / L.
  • ozone UFB-containing liquids having different UFB average diameter, UFB standard deviation, and UFB density
  • an appropriate amount of citric acid is added to the ozone UFB-containing liquid of condition (1) to adjust the pH to 5.8.
  • the ozone UFB containing liquid of the conditions (2) was prepared. The reason for this adjustment is that the gas-liquid interface of UFB may be charged, and it is thought that the UFB average diameter, UFB standard deviation, and UFB density can be changed by adjusting the pH. .
  • the pH is 5.8, the UFB average diameter is 200.4 nm, the UFB standard deviation is 108.9 nm, and the UFB density is 5.51 ⁇ 10 7 pieces. / Ml, ozone concentration was 0.25 mg / L.
  • the ozone concentration did not decrease after being held at room temperature for 2 hours. Moreover, about the ozone UFB containing liquid of the conditions (1), when refrigerated storage was performed at 10 degrees C or less, the ozone concentration did not decrease even after two months. For reference, the ozone concentration of pure water was measured and found to be 0.00 mg / L. From these facts, it is understood that ozone gas is present in the liquid in the UFB state in any of the ozone UFB-containing liquids in the conditions (1) and (2).
  • the measurement of the mist average diameter was performed using a particle size distribution measuring device “Aerotrac LDSA-SPR3500A” manufactured by Microtrack Bell Co., Ltd.
  • This apparatus uses the Franchohel diffraction method as a measurement principle.
  • the “mist average diameter” means a Sauter average particle diameter that is generally used as an average value of the particle diameter of droplets.
  • the Sauter average particle diameter is a value represented as ⁇ n i x i 3 / ⁇ n i x i 2 where n i is the particle diameter and x i is the number of particles.
  • the measurement position of the mist average diameter is the position of the object 9 to which the mist 8 is sprayed. Here, since the position of the object 9 was 30 cm away from the tip of the two-fluid nozzle 2 along the spray direction of the mist 8, the mist average diameter at that position was measured.
  • the mist average diameter was made into the average value of 5 times of measured values.
  • the spray pattern by the two-fluid nozzle 2 is a full cone type.
  • the injection amount from the two-fluid nozzle 2 was about 0.2 to 15 L / h.
  • the mist average diameter can be controlled (specifically, 10 ⁇ m or more and 1000 ⁇ m or less) by appropriately setting the air pressure and the liquid pressure.
  • Table 3 shows the ozone concentration [mg / L] and ozone concentration reduction rate [%] when the mist average diameter is 7.2 ⁇ m, 7.4 ⁇ m, 7.5 ⁇ m, 10.0 ⁇ m, 12.1 ⁇ m, and 39.7 ⁇ m. ] And E. coli viability.
  • Table 3 also shows the ozone concentration and the E. coli survival rate of the ozone UFB-containing liquid before mist formation.
  • FIG. 3 is a graph in which the horizontal axis represents the mist average diameter [ ⁇ m], and the vertical axis represents the ozone concentration reduction rate [%] and the E. coli survival rate.
  • the mist 8 at the position of the object 9 (here, a position 30 cm away from the two-fluid nozzle 2 along the spray direction). Were collected, and the ozone concentration and the Escherichia coli survival rate of a sample having a predetermined liquid volume (specifically, about 50 ml) were measured. If the sterilizing power and the ozone concentration of the ozone UFB-containing liquid 7 are reduced by mist formation, the sterilizing power and the ozone concentration should naturally be reduced even in the sample obtained by collecting the mist.
  • the mist has at least the same level of bactericidal power and ozone concentration as the sample obtained by collecting the mist.
  • the ozone concentration was measured using a portable absorptiometer “DR850” manufactured by Toa DKK Corporation and an ozone reagent “HACH1186”.
  • the ozone concentration was an average value of three measurement values in order to reduce variation in the measurement values.
  • the ozone concentration reduction rate is a value calculated by calculating how much the ozone concentration after mist formation has decreased from the ozone concentration before mist formation when the ozone concentration of the ozone UFB-containing liquid before mist formation is 100%.
  • E. coli survival rate [100 ⁇ ⁇ (ozone concentration before mist) ⁇ (ozone concentration after mist) ⁇ / (ozone concentration before mist)].
  • Petrifilm (registered trademark) medium CC plate for measuring E. coli group count” manufactured by 3M Healthcare Co., Ltd. was used. Specifically, the measurement of the survival rate of E. coli was performed as follows. First, a moderately diluted Escherichia coli solution and pure water were mixed at a ratio of 1: 9, and after 1 minute, an appropriate amount of the mixture was dropped onto a Petri film, and the number of bacteria counted after incubation at 35 ° C.
  • the Escherichia coli solution and the pre-misted or post-misted ozone UFB-containing solution were mixed at 1: 9, and after 1 minute, an appropriate amount of the mixed solution was dropped on a Petri film, and the bacteria counted after incubation at 35 ° C. for 24 hours. The percentage of numbers was calculated. That is, the Escherichia coli survival rate is a value indicating the bactericidal power of the ozone UFB-containing liquid before or after mist formation.
  • the ozone UFB-containing liquid before mist formation has a very small E. coli survival rate of less than 1.0 ⁇ 10 ⁇ 4, and the ozone UFB-containing liquid before mist formation has a high bactericidal power. Recognize. Further, from Table 3 and FIG. 3, when the average diameter of the mist is 10 ⁇ m or more, the viability of E. coli is less than 1.0 ⁇ 10 ⁇ 4 even before the mist formation even after the mist formation. It can be seen that the same sterilizing power is maintained after mist formation. On the other hand, when the average diameter of the mist is 10 ⁇ m or less, the survival rate of E. coli is 1.0 ⁇ 10 ⁇ 3 or more. That is, after the mist formation, the survival rate of Escherichia coli is larger by one digit or more than before the mist formation, and the sterilization power decreases after the mist formation, and the sterilization power before the mist formation is not maintained.
  • the E. coli survival rate depends on the ozone concentration reduction rate, and as the ozone concentration reduction rate increases, the E. coli survival rate also increases and the bactericidal power decreases.
  • the threshold value is 25%. That is, when the ozone concentration reduction rate is 25% or less, as shown in Table 3 and FIG. 3, it can be seen that the sterilizing power of the ozone UFB-containing liquid before mist formation is sufficiently maintained. Therefore, it can be said that the ozone concentration is sufficiently maintained when the ozone concentration reduction rate is 25% or less.
  • the ozone UFB-containing liquid of the condition (2) was also verified as to whether or not the ozone concentration of the original ozone UFB-containing liquid is maintained after mist formation.
  • the results of verification are shown in Table 4 and FIG.
  • Table 4 shows the ozone concentration [mg / L] when the mist average diameter is 7.4 ⁇ m, 7.5 ⁇ m, 10.0 ⁇ m, 12.1 ⁇ m, and 39.7 ⁇ m for the ozone UFB-containing liquid of condition (2). And ozone concentration reduction rate [%]. Table 4 also shows the ozone concentration and the ozone concentration reduction rate for the ozone UFB-containing liquid of condition (1).
  • FIG. 4 is a graph in which the horizontal axis represents the mist average diameter [ ⁇ m] and the vertical axis represents the ozone concentration reduction rate [%].
  • the ozone UFB-containing liquid of condition (2) also has a sufficient ozone concentration before mist formation because the mist average diameter is 10 ⁇ m or more, similarly to the ozone UFB-containing liquid of condition (1).
  • the characteristic values (UFB average diameter, UFB standard deviation, and UFB density) of the ozone UFB-containing liquid are greatly different between the condition (1) and the condition (2).
  • the ozone concentration before mist formation was sufficiently maintained by setting the mist average diameter to 10 ⁇ m or more.
  • the ozone concentration before mist formation can be sufficiently maintained, that is, the bactericidal power can be sufficiently maintained.
  • mist average diameter From the standpoint of maintaining sterilizing power and ozone concentration, there is no limit on the upper limit of the mist average diameter, but if the mist average diameter is too large, the amount of ozone UFB-containing liquid required for sterilization / deodorization may increase. .
  • mist average diameter is 1000 ⁇ m or less, an effect is obtained that a relatively wide range can be sterilized and deodorized with a small amount of ozone UFB-containing liquid.
  • One of the two verified methods is the pressure injection valve method.
  • a liquid feed pump is connected to one fluid nozzle, and mist formation is performed using the pressure of the liquid.
  • the other method is a method using a handy type spray bottle (having a nozzle structure at the tip of the bottle, and the liquid is sprayed as a mist from the nozzle).
  • the position of the object is 30 cm away from the nozzle tip
  • the object position is 5 cm away from the nozzle tip.
  • the mist average diameter at the position of the object is 10 ⁇ m or more and 1000 ⁇ m or less.
  • an ozone UFB-containing liquid having an ozone concentration of 0.24 mg / L was misted, and the mist at the position of the object was collected and measured.
  • the ozone concentration after mist formation was 0.20 mg / L, and the ozone concentration reduction rate was 16.7%.
  • the sterilization power of the original ozone UFB-containing liquid is sufficiently increased by setting the mist average diameter to 10 ⁇ m or more. Can be maintained.
  • ozone concentration is reduced by using a pressure injection valve type sterilization / deodorization system for ozone water that is dissolved in pure water by generating ozone gas in pure water. The rate was verified.
  • the ozone concentration after mist formation is 0.14 mg / L, even though the mist average diameter at the position of the object is 10 ⁇ m or more and 1000 ⁇ m or less.
  • the ozone concentration reduction rate was 70.8%.
  • the sterilization / deodorization method in the present embodiment sterilizes an object by spraying a liquid containing ultrafine bubbles (UFB) containing ozone gas as a mist having a mist average diameter of 10 ⁇ m or more and 1000 ⁇ m or less. ⁇
  • UFB ultrafine bubbles
  • the sterilization / deodorization method (mist generation method) of the present embodiment When the sterilization / deodorization method (mist generation method) of the present embodiment is used, a mist in a state where the sterilization power and / or ozone concentration of the ozone UFB-containing liquid is sufficiently maintained is sprayed on the object.
  • a mist in a state where the sterilization power and / or ozone concentration of the ozone UFB-containing liquid is sufficiently maintained is sprayed on the object.
  • a wide range of objects can be sterilized and deodorized with an ozone UFB-containing liquid.
  • the sterilization / deodorization system used in the sterilization / deodorization method of the present embodiment includes three exemplified sterilization / deodorization systems (sterilization / deodorization system including a two-fluid nozzle 2 as shown in FIG. 1, pressure injection It is not limited to a valve-type sterilization / deodorization system or a sterilization / deodorization system using a handy type spray bottle. Any sterilization / deodorization system capable of spraying an ozone UFB-containing liquid as a mist having a mist average diameter of 10 ⁇ m or more and 1000 ⁇ m or less can be suitably used for the sterilization / deodorization method of the present embodiment.
  • FIG. 5 is a diagram schematically showing the mist generating device 10.
  • generation apparatus 10 is provided with the storage part 11 and the mist production
  • the storage unit 11 stores a liquid (ozone UFB-containing liquid) containing UFB (bubbles having a diameter of 1 ⁇ m or less) containing ozone gas.
  • the storage unit 11 stores an ozone UFB-containing liquid before using the mist generating device 10.
  • the storage unit 11 preferably has a sealed structure so that air does not touch the ozone UFB-containing liquid. Thereby, it is possible to prevent the ozone from being removed from the ozone UFB-containing liquid, and to further increase the ozone holding power of the ozone UFB-containing liquid.
  • the storage unit 11 includes a cold insulating unit that can maintain the temperature of the ozone UFB-containing liquid at a predetermined temperature or lower (for example, 10 ° C. or lower). Thereby, it is possible to prevent the ozone from being removed from the ozone UFB-containing liquid, and to further increase the ozone holding power of the ozone UFB-containing liquid.
  • a predetermined temperature or lower for example, 10 ° C. or lower
  • the storage unit 11 is preferably formed of a material having ozone resistance. Specifically, glass or stainless steel (a strong non-moving film made of chromium is formed on the surface, so that the oxidation by ozone is extremely advanced. It is preferably made of a fluororesin (PFA, PTFE, etc.). Thereby, since degradation of the storage unit 11 due to ozone can be prevented, the life of the mist generating device 10 can be extended.
  • PFA fluororesin
  • the mist generating unit 12 sprays the ozone UFB-containing liquid stored in the storage unit 11 as a mist 8 on the object. More specifically, the mist production
  • the generation method of the mist 8 by the mist generation unit 12 is not particularly limited.
  • a two-fluid nozzle as described in Embodiment 1 can be used.
  • the mist generation unit 12 includes, for example, a liquid feed pump, a compressor, a two-fluid nozzle, and the like, but is not limited to this configuration.
  • the use of a two-fluid nozzle has advantages such as excellent mist refinement performance, easy control of the mist average diameter, large adjustment range of the spray flow rate, and passage of relatively large foreign matter. can get.
  • a one-fluid nozzle of the pressure injection valve type as described in the first embodiment may be used.
  • generation part 12 is comprised from a liquid feeding pump, a 1 fluid nozzle, etc.
  • a single fluid nozzle is used, there are advantages such that the number of components can be reduced (no compressor is required), the cost performance is excellent, and the spray flow rate can be adjusted.
  • the nozzle configuration used in the handy type spray bottle as described in the first embodiment may be used.
  • the number of components can be greatly reduced (no compressor or liquid feed pump is required), the cost performance is excellent, and the entire apparatus can be reduced in weight.
  • the ozone UFB-containing liquid can be sprayed as a mist 8 having an average mist diameter of 10 ⁇ m or more and 1000 ⁇ m or less
  • a vaporization method, a steam method, an ultra mist generation method generally used in humidifiers can be used.
  • a sound wave method or the like may be used.
  • the constituent elements of the mist generating unit 12 are also formed of a material having ozone resistance. Specifically, glass or stainless steel (a strong non-moving film made of chromium is formed on the surface, so oxidation by ozone Is preferably made of a fluororesin (PFA, PTFE, etc.). Thereby, since deterioration of the mist production
  • a material having ozone resistance Specifically, glass or stainless steel (a strong non-moving film made of chromium is formed on the surface, so oxidation by ozone Is preferably made of a fluororesin (PFA, PTFE, etc.).
  • the mist generating apparatus 10 in the present embodiment includes the storage unit 11 that stores the ozone UFB-containing liquid, and the mist generating unit 12 that sprays the ozone UFB-containing liquid as the mist 8 having a mist average diameter of 10 ⁇ m to 1000 ⁇ m. With. Therefore, it becomes possible to spray the mist 8 in a state in which the sterilizing power and / or ozone concentration of the ozone UFB-containing liquid is sufficiently maintained, and sterilize and deodorize a wide range of objects with a small amount of the ozone UFB-containing liquid. It becomes possible to do. Moreover, since the mist production
  • FIG. 6 is a diagram schematically showing the mist generating device 20.
  • generation apparatus 20 demonstrates centering around a different point from the mist production
  • FIG. 6 is a diagram schematically showing the mist generating device 20.
  • the mist generator 20 includes an ozone gas generator 23, an ozone UFB-containing liquid generator 24, and a mist generator 22. That is, the mist generating device 20 is different from the mist generating device 10 of the second embodiment in that the ozone mist generating device 23 and the ozone UFB-containing liquid generating unit 24 are provided. Moreover, the mist production
  • the ozone gas generator 23 generates ozone gas.
  • the generation method of the ozone gas is not particularly limited, and various methods can be used.
  • a discharge method such as a silent discharge method or a corona discharge method, an electrolysis method, an ultraviolet lamp method, or the like can be used.
  • the discharge method has the advantage that the production cost is very low.
  • the electrolytic process has the advantage that no harmful nitrogen oxides (NOx) are produced as a secondary.
  • the ultraviolet lamp method has an advantage that ozone gas can be easily generated.
  • the ozone UFB-containing liquid generating unit 24 uses the ozone gas generated by the ozone gas generating unit 23, that is, generates an ozone UFB-containing liquid containing UFB containing the ozone gas generated by the ozone gas generating unit 23.
  • the generation method of the ozone UFB-containing liquid is not particularly limited, and various methods can be used. For example, swirling flow method, static mixer method, ejector method, venturi method, pressure dissolution method, cavitation method, ultrafine pore method, rotation method, ultrasonic method, vibrating perforated plate method, electrolysis method, and a combination of these methods Etc. can be used.
  • the swirl flow system has the advantage that the device configuration can be made relatively simple.
  • generation part 22 sprays the ozone UFB containing liquid produced
  • various methods can be used as in the mist generation unit 12 of the mist generation device 10 of the second embodiment.
  • the mist generating device 20 in the present embodiment includes the ozone gas generating unit 23 that generates ozone gas, and the bubble-containing liquid that generates an ozone UFB-containing liquid that contains UFB containing the ozone gas generated by the ozone gas generating unit 23.
  • generation part 22 which sprays the ozone UFB containing liquid produced
  • generation apparatus 20 in this embodiment has the ozone UFB containing liquid production
  • generation apparatus 20 may further be provided with the storage part 21 which stores the ozone UFB containing liquid produced
  • FIG. 7 when the mist production
  • FIG. 6 when the mist production
  • the main component of the ozone UFB-containing liquid containing UFB containing ozone gas is water, but the embodiments of the present invention are not limited to this.
  • the main component of the liquid containing UFB containing ozone gas may be, for example, an organic solvent or various oils.
  • a mist generating apparatus and a mist generating method capable of spraying a mist having a sufficient sterilizing power and / or ozone concentration onto an object.
  • the mist generating device is suitably used as a sterilizing / deodorizing device. Moreover, the mist production

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  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

Un dispositif de génération de brume (10) comporte : une unité de stockage (11) pour stocker un liquide à UFB d'ozone, qui est un liquide comprenant des bulles ultrafines du gaz d'ozone; et une unité de génération de brume (12) pour former une brume ayant un diamètre moyen de brume de 10 µm à 1000 µm à partir du liquide à UFB d'ozone stocké dans l'unité de stockage et la pulvériser.
PCT/JP2017/022377 2016-06-30 2017-06-16 Procédé et dispositif de génération de brume, et procédé de stérilisation/désodorisation WO2018003557A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3950605A4 (fr) * 2019-03-29 2023-03-08 IHI Corporation Dispositif de fabrication d'eau ozonée, procédé de fabrication d'eau ozonée, eau ozonée, dispositif de traitement d'eau ozonée et procédé d'évaluation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007167053A (ja) * 2005-02-21 2007-07-05 Eiji Matsumura 家畜消毒方法及び家畜消毒装置
JP2007275089A (ja) * 2006-04-03 2007-10-25 Naga International Kk 長期持続型オゾン水、長期持続型オゾン水を利用した環境殺菌・脱臭浄化方法
JP2014526969A (ja) * 2011-08-25 2014-10-09 エレクトロリティック、オゾン、インコーポレイテッド オゾン化水を生じさせて送り出す装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007167053A (ja) * 2005-02-21 2007-07-05 Eiji Matsumura 家畜消毒方法及び家畜消毒装置
JP2007275089A (ja) * 2006-04-03 2007-10-25 Naga International Kk 長期持続型オゾン水、長期持続型オゾン水を利用した環境殺菌・脱臭浄化方法
JP2014526969A (ja) * 2011-08-25 2014-10-09 エレクトロリティック、オゾン、インコーポレイテッド オゾン化水を生じさせて送り出す装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3950605A4 (fr) * 2019-03-29 2023-03-08 IHI Corporation Dispositif de fabrication d'eau ozonée, procédé de fabrication d'eau ozonée, eau ozonée, dispositif de traitement d'eau ozonée et procédé d'évaluation

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