WO2022080322A1 - 薬液噴霧システム及びその運転方法 - Google Patents

薬液噴霧システム及びその運転方法 Download PDF

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Publication number
WO2022080322A1
WO2022080322A1 PCT/JP2021/037603 JP2021037603W WO2022080322A1 WO 2022080322 A1 WO2022080322 A1 WO 2022080322A1 JP 2021037603 W JP2021037603 W JP 2021037603W WO 2022080322 A1 WO2022080322 A1 WO 2022080322A1
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Prior art keywords
path
water
liquid
air
mixing
Prior art date
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Ceased
Application number
PCT/JP2021/037603
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English (en)
French (fr)
Japanese (ja)
Inventor
航太 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to AU2021362359A priority Critical patent/AU2021362359C1/en
Priority to CN202180058385.5A priority patent/CN116056733A/zh
Priority to US18/018,319 priority patent/US20230293752A1/en
Priority to JP2022556972A priority patent/JP7432875B2/ja
Publication of WO2022080322A1 publication Critical patent/WO2022080322A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
    • A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances
    • 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—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
    • A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
    • A61L2/22—Phase substances, e.g. smokes or aerosols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2486—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device with means for supplying liquid or other fluent material to several discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
    • B05B7/267—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device the liquid and the gas being both under pressure
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/15—Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet

Definitions

  • the present disclosure relates to a chemical solution spraying system for spraying a mixed solution of a sterilizing solution and water as a chemical solution and an operation method thereof for the purpose of sterilization or sterilization.
  • a system for spraying chemicals is used for sterilization or sterilization applications.
  • Patent Document 1 discloses a pH adjusting device that stably adjusts the pH value of sterilizing water produced by mixing carbon dioxide gas with raw water.
  • an object of the chemical spray system of the present disclosure and its operation method is to suppress the growth of bacteria in the residual water of the route through which water passes.
  • a water supply unit that supplies water as the liquid to the liquid side inlet of the two fluid nozzles
  • a sterilizing liquid supply unit that supplies the sterilizing liquid as the liquid to the liquid side inlet of the two fluid nozzles
  • An air supply unit that supplies air as the gas to the gas side inlet of the two-fluid nozzle
  • a liquid mixing unit for mixing the water and the sterilizing solution to generate a mixed solution of the water and the sterilizing solution
  • a water path for supplying the water from the water supply unit to the liquid mixing unit The disinfectant solution route for supplying the disinfectant solution from the disinfectant solution supply unit to the liquid mixing unit, and A mixing liquid path for supplying the mixed liquid from the liquid mixing portion to the liquid side inlet of the two fluid nozzles, and A first air path for supplying the air from the air supply unit to the gas side inlet of the two fluid nozzles, A second air path for supplying the air
  • a water supply unit that supplies water as the liquid to the liquid side inlet of the two fluid nozzles
  • a sterilizing liquid supply unit that supplies the sterilizing liquid as the liquid to the liquid side inlet of the two fluid nozzles
  • An air supply unit that supplies air as the gas to the gas side inlet of the two-fluid nozzle
  • a liquid mixing unit for mixing the water and the sterilizing solution to generate a mixed solution of the water and the sterilizing solution
  • control section opens the on-off valve from the air supply section to the water path and the mixed liquid path via the second air path. Supply the air, After that, the control unit provides a method of operating the chemical spray system, which controls the supply of the air to the water path so as to stop the supply.
  • the on-off valve in a state where water does not flow into the water path, the on-off valve is opened to supply air from the second air path to the water path, and then control is performed so as to stop. Allows the supplied air to drain residual water in the path through which the water passes. As a result, it is possible to suppress the growth of bacteria in the residual water of the route through which water passes. In addition, since the liquid in the mixing route can also be discharged, it is possible to suppress the growth of bacteria in the residual water of the mixing route regardless of the concentration of the disinfectant solution.
  • the chemical spray system includes at least one two-fluid nozzle 40, a water supply unit 41, a disinfectant liquid supply unit 43, and an air supply unit 42.
  • a mixing tank 6 as an example of a liquid mixing section, a water path 44, a disinfectant solution path 45, a mixed solution path 46, a first air path 47, a second air path 48, an on-off valve 49, and the like. It includes at least a control unit 50.
  • a plurality of, for example, five two-fluid nozzles 40 are provided, and each two-fluid nozzle 40 is connected to the downstream end of the first air path 47 and the downstream end of the mixed liquid path 46, and is the first.
  • a gas and a liquid are supplied through the air path 47 and the mixed liquid path 46, and the gas and the liquid are sprayed in the form of mist.
  • An example of a gas is air
  • an example of a liquid is a mixed solution of water and a sterilizing solution.
  • the water supply unit 41 is connected to the upstream end of the water path 44 and pumps water from the water tank to the liquid side inlet of the two-fluid nozzle via the water path 44 and the mixed liquid path 46 by a pump or from a water pipe. Supply.
  • the sterilizing liquid supply unit 43 supplies the sterilizing liquid to the liquid side inlet of the two-fluid nozzle 40. More specifically, as will be described later, the sterilizing solution is mixed with water to form a mixed solution, and then supplied to the liquid side inlet of the two-fluid nozzle 40.
  • the sterilizing liquid supply unit 43 includes a sterilizing liquid tank 9 in which the sterilizing liquid is held, and a sterilizing liquid pump 10 for supplying the sterilizing liquid in the sterilizing liquid tank 9 to the mixed liquid passage 46. Has been done.
  • the air supply unit 42 is connected to the upstream end of the first air path 47, and supplies air to the gas side inlet of the bifluid nozzle 40 via the first air path 47.
  • the mixing tank 6 In the mixing tank 6, the water path 44 is connected to the inlet side, the mixed liquid path 46 is connected to the outlet side, and the water flowing from the water path 44 and the sterilizing liquid are mixed to mix the water and the sterilizing liquid. A mixed solution with and is generated and discharged from the mixed solution path 46.
  • the mixing tank 6 In FIG. 1, the mixing tank 6 is arranged along the vertical direction, with the inlet at the lower end and the outlet at the upper end. That is, the inlet is located below the outlet in the direction of gravity.
  • the water route 44 is a route for supplying water from the water supply unit 41 to the mixing tank 6.
  • a disinfectant liquid supply solenoid valve 1 is arranged in the water path 44.
  • the disinfectant liquid supply solenoid valve 1 is arranged in the water path 44 between the water supply unit 41 and the connection point between the disinfectant liquid path 45 and the water path 44, and is, for example, a normally closed valve for supplying water. It sometimes opens, but closes when the water supply is stopped, so it functions as a valve to prevent air from entering.
  • the disinfectant liquid route 45 is connected between the disinfectant liquid supply unit 43, the water supply unit 41 of the water route 44, and the mixing tank 6, and a part of the water route 44 is connected from the disinfectant liquid supply unit 43.
  • This is a route for supplying the sterilizing liquid to the mixing tank 6 via the mixing tank 6.
  • the tank 9 is connected to the water supply unit 41 of the water path 44 and the mixing tank 6 via the sterilizing liquid pump 10 by the sterilizing liquid path 45.
  • the mixed liquid path 46 is a path that connects the mixing tank 6 and the liquid side inlet of the two-fluid nozzle 40 and supplies the mixed liquid from the mixing tank 6 to the liquid side inlet of the two-fluid nozzle 40.
  • the first air path 47 is a path for supplying air from the air supply unit 42 to the gas side inlet of the bifluid nozzle 40.
  • the second air path 48 is a path that connects the vicinity of the upstream end of the first air path 47 and the vicinity of the upstream end of the water path 44, and supplies air from the air supply unit 42 to the water path 44.
  • the on-off valve 49 is arranged in the second air path 48 and opens and closes the second air path 48.
  • the control unit 50 controls to open the on-off valve 49 to supply air from the second air path 48 to the water path 44 and the mixed liquid path 46 in a state where water does not flow into the water path 44, and then stop. ..
  • the air supplied to the second air path 48 enters the water path 44 and enters the bypass path 52 as described below.
  • the control unit 50 controls the opening and closing of the on-off valve 49, and also controls the supply of the water supply unit 41 so that the water does not flow into the water path 44.
  • the state in which water does not flow in does not mean that the water supply is stopped or the water supply is stopped, but that the pressure of the water supply is lower than the pressure of the air supply so that the water does not flow into the water path 44. Means such as.
  • control unit 50 can control the operation of the water supply unit 41, the sterilizing liquid supply unit 43, the air supply unit 42, and the on-off valve 49 to perform a desired operation.
  • the chemical spray system may further include a bypass path 52 and a switching mechanism.
  • bypass path 52 is connected from the water path 44 to the mixed liquid path 46 without passing through the mixing tank 6.
  • the switching mechanism for switching between the bypass path 52 and the water path 44 includes a bypass solenoid valve 3 for an on-off valve and a disinfectant liquid supply solenoid valve 1 whose operation is controlled by the control unit 50.
  • the switching mechanism may have a function of switching between the bypass path 52 and the water path 44, such as a three-way valve or an on-off valve on the path.
  • the bypass solenoid valve 3 is opened and the disinfectant liquid supply solenoid valve 1 is closed.
  • the bypass solenoid valve 3 is closed and the disinfectant solution supply solenoid valve 1 is opened. Switching can be controlled by the control unit 50.
  • the control unit 50 supplies the disinfectant liquid to the mixing tank 6, opens the on-off valve 49 after the water supply of the water path 44 is stopped, and uses the bypass solenoid valve 3 and the disinfectant liquid supply solenoid valve 1 of the switching mechanism.
  • the water path 44 is switched to the bypass path 52, air is supplied to the bypass path 52 via the second air path 48, and the system is stopped.
  • the liquid remaining in the water path 44 on the upstream side of the connection portion between the water path 44 and the bypass path 52 is discharged to the nozzle side by the supplied air, and the bacteria in the residual liquid are discharged. Can suppress the reproduction of.
  • the liquid remaining in the mixed liquid path 46 on the downstream side from the connection portion between the bypass path 52 and the mixed liquid path 46 is also discharged to the nozzle side by the supplied air, and remains regardless of the concentration of the disinfectant liquid. It is possible to suppress the growth of bacteria in liquid.
  • the chemical spraying system may further have the following configurations, and by providing the following configurations, the spraying operation can be performed more smoothly.
  • the three-way valve 2 is arranged in the mixed liquid path 46 on the outlet side of the mixing tank 6 and functions as a valve for measuring the concentration of the sprayed water.
  • the check valve 4 is arranged on the downstream side of the bypass solenoid valve 3 of the bypass path 52, and is a valve for preventing backflow during normal driving.
  • the check valve 5 is arranged on the downstream side of the three-way valve 2 of the mixed liquid path 46, and is a valve for preventing air backflow at the time of stopping.
  • the drain valve 7 is a drain valve that is connected to the inflow port side below the mixing tank 6 and discharges the liquid in the mixing tank 6.
  • the float sensor 8 is arranged in the lower part of the disinfectant liquid tank 9 arranged along the vertical direction, and is a sensor for detecting the remaining amount of the disinfectant liquid in the disinfectant liquid tank 9, and the detection result is removed. It is input to the bacterial solution pump 10, and when the remaining amount becomes less than a predetermined amount, the drive of the sterilizing solution pump 10 is stopped.
  • the check valve 11 is arranged in the disinfectant liquid path 45 and is a valve for preventing backflow of water from the water path 44.
  • mixing tank 6 will be described below.
  • the sterilizing liquid pump 10 is a metering pump, and intermittently supplies the sterilizing liquid to the sterilizing liquid passage 45 and therefore the water passage 44. Then, the concentration of the sterilizing solution becomes non-uniform on the water path 44. In order to prevent this, a mixing tank 6 is provided between the sterilizing liquid pump 10 and the nozzle 40 to alleviate fluctuations in the concentration of the sterilizing liquid.
  • the sterilizing liquid when the sterilizing liquid is injected into the water passage 44 using a diaphragm metering pump as an example of the sterilizing liquid pump 10, the sterilizing liquid is in the water passage 44 through which water flows due to the characteristics of the sterilizing liquid pump 10. It is injected intermittently. Therefore, there is a problem that the concentration of the sterilizing liquid is uneven on the piping route of the water route 44.
  • a negative pressure space 6b is created at the edge near the inflow port of the tank 6 so that the fluid flow is disturbed and the liquid is diffused. Further, since the inner diameter of the mixing tank 6 is large, the flow velocity in the pipe is lowered, and a portion where a high concentration portion and a low concentration portion are mixed is generated. By these actions, the concentration of the sterilizing solution becomes uniform in the mixing tank 6. As a result, the above-mentioned problem can be solved and the concentration of the chemical solution of the mist sprayed from the nozzle 40 can be made constant.
  • the mixing tank 6 having an inner diameter of about 2 to 10 times the inner diameter of the pipe of the water path 44 is larger than the inner diameter of the pipe of the water path 44. This is because if it is less than twice the inner diameter of the pipe of the water path 44, the mixture of water and the sterilizing liquid may not be sufficient. Further, if it exceeds 10 times the inner diameter of the pipe of the water path 44, the mixing tank 6 becomes too large more than necessary.
  • the operation is as follows by the operation control of the control unit 50.
  • water is supplied from the water supply unit 41 to the liquid side inlet of the two-fluid nozzle 40.
  • water is supplied from the water supply unit 41 to the water path 44 (see arrows A1 and A2 in FIG. 1), passes through the mixing tank 6, and is supplied from the mixed liquid path 46 to the liquid side inlet of the two-fluid nozzle. do.
  • the sterilizing liquid is supplied from the sterilizing liquid tank 9 to the water passage 44 via the sterilizing liquid passage 45 by driving the sterilizing liquid pump 10, and then the water and the sterilizing liquid are mixed in the mixing tank 6. To produce a mixed solution. Then, the mixed liquid is supplied to the liquid side inlet of the bifluid nozzle 40 via the mixed liquid path 46 (see arrows A3 and A4 in FIG. 1).
  • mist is formed by air and a mixed liquid and sprayed.
  • the pressure of the water supply may be made lower than the pressure of the air supply so that the water does not flow into the water passage 44.
  • the on-off valve 49 is opened, and the water path 44 is switched to the bypass path 52 by the bypass solenoid valve 3 of the switching mechanism and the disinfectant liquid supply solenoid valve 1.
  • air is supplied from the air supply unit 42 to the bypass path 52 via the second air path 48 and a part of the water path 44 (see arrows B1, B2 and B3 in FIG. 1).
  • the air supplied to the bypass path 52 enters the mixed liquid path 46 (see arrow B4 in FIG. 1) and is sprayed or discharged from the nozzle 40.
  • the residual water existing in the path through which the air flowed is discharged from the path.
  • the supply of air from the air supply unit 42 is stopped.
  • the residual water existing in the path through which the air flows and through which the water passes for example, the upstream side of the connection portion between the water path 44 and the bypass path 52.
  • the liquid remaining in the water passage 44 is discharged to the nozzle side by the supplied air, and the growth of bacteria in the residual liquid can be suppressed.
  • the liquid remaining in the mixed liquid path 46 on the downstream side from the connection portion between the bypass path 52 and the mixed liquid path 46 is also discharged to the nozzle side by the supplied air, and remains regardless of the concentration of the disinfectant liquid. It is possible to suppress the growth of bacteria in liquid.
  • the path volume of the path (main path) that does not pass through the bypass path 52 is the bypass path. Since it is larger than the path volume of 52, when the liquid in the path is discharged by air supply when the water supply is stopped, the path passing through the bypass path 52 has an effect that the liquid is not wasted. Further, since the flow rate sprayed from the nozzle 50 is almost constant, if the path volume of the path through which the air passes when the water supply is stopped is small, the liquid discharge time in the path can be shortened. If it is made smaller than the inner diameter of the pipe of the main path, the time required for liquid discharge can be reduced.
  • the mixing tank 6 is arranged along the vertical direction and the outlet is arranged at the upper end, air is less likely to remain in the mixing tank 6 where air can be easily extracted from the inside of the mixing tank 6, and bacteria are less likely to propagate. be able to.
  • the chemical spray system according to the second embodiment does not have a bypass path 52 and has an inflow port of a mixing tank 6 arranged along the vertical direction as compared with the first embodiment.
  • the outlet is located at the lower end, which is different in that the residual water in the mixing tank 6 can be discharged. That is, the inlet of the mixing tank 6 is arranged above the outlet in the direction of gravity.
  • the length of the mixing tank 6 is, for example, twice or more and 10 times or less the inner diameter of the pipe of the water path 44. This is because if the length of the mixing tank 6 is less than twice the inner diameter of the pipe of the water path 44, the mixing of water and the sterilizing liquid may not be sufficient. Further, if the length of the mixing tank 6 exceeds 10 times the inner diameter of the pipe of the water path 44, it takes too much time to supply air and drain the residual water.
  • the operation is as follows by the operation control of the control unit 50.
  • water is supplied from the water supply unit 41 to the liquid side inlet of the two-fluid nozzle 40.
  • water is supplied from the water supply unit 41 to the water path 44 (see arrow D1 in FIG. 3), passes through the mixing tank 6, and is supplied from the mixed liquid path 46 to the liquid side inlet of the two-fluid nozzle (see the arrow D1 in FIG. 3). See arrow D2 in FIG. 3).
  • the sterilizing liquid is supplied from the sterilizing liquid tank 9 to the water passage 44 via the sterilizing liquid passage 45 by driving the sterilizing liquid pump 10, and then the water and the sterilizing liquid are mixed in the mixing tank 6. To produce a mixed solution. Then, the mixed liquid is supplied to the liquid side inlet of the bifluid nozzle 40 via the mixed liquid path 46 (see arrow D2 in FIG. 3).
  • mist is formed by air and a mixed liquid and sprayed.
  • the pressure of the water supply may be made lower than the pressure of the air supply so that the water does not flow into the water passage 44.
  • the on-off valve 49 is opened, and air is supplied from the air supply unit 42 to the mixing tank 6 via the second air path 48 and the water path 44 from the inlet at the upper end (arrows C1 and C2 and C3 in FIG. 3). reference).
  • the air supplied to the mixing tank 6 is discharged from the outlet at the lower end of the mixing tank 6 and enters the mixed liquid path 46 (see arrow C4 in FIG. 3). After that, it reaches the nozzle 40 from the mixed liquid path 46 (see arrow C5 in FIG. 3), and is sprayed or discharged from the nozzle 40.
  • the residual water existing in the path through which the air flowed and the mixing tank 6 is discharged from the path and the mixing tank 6.
  • the supply of air from the air supply unit 42 is stopped.
  • the residual liquid existing in the paths 44 and 46 through which the water flows and the mixing tank 6 is discharged to the nozzle side by the supplied air, and is the residual liquid. Can suppress the growth of the fungus.
  • the disinfectant liquid supply solenoid valve 1 may be arranged on the downstream side of the check valve 5 on the downstream side of the mixing tank 6 instead of being arranged on the upstream side of the mixing tank 6.
  • the chemical spray system and its operating method according to the present disclosure can suppress the growth of bacteria in the residual water of the path through which water passes, and are a mixed solution of the disinfectant solution and water for the purpose of sterilization or sterilization. Is useful for spraying as a chemical solution.

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Catching Or Destruction (AREA)
PCT/JP2021/037603 2020-10-13 2021-10-11 薬液噴霧システム及びその運転方法 Ceased WO2022080322A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2021362359A AU2021362359C1 (en) 2020-10-13 2021-10-11 Chemical spraying system and method for operating same
CN202180058385.5A CN116056733A (zh) 2020-10-13 2021-10-11 药液喷雾系统及其运转方法
US18/018,319 US20230293752A1 (en) 2020-10-13 2021-10-11 Chemical spraying system and method for operating same
JP2022556972A JP7432875B2 (ja) 2020-10-13 2021-10-11 薬液噴霧システム及びその運転方法

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JP2020-172676 2020-10-13
JP2020172676 2020-10-13

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WO2022080322A1 true WO2022080322A1 (ja) 2022-04-21

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JP7854599B2 (ja) 2023-09-07 2026-05-07 パナソニックＩｐマネジメント株式会社 二流体噴霧装置の液だれ防止機構

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