WO2025104796A1 - 活性種発生装置、ショーケース、空調機、閉塞されたフロア、および、カビおよび微生物の繁殖抑制方法 - Google Patents

活性種発生装置、ショーケース、空調機、閉塞されたフロア、および、カビおよび微生物の繁殖抑制方法 Download PDF

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Publication number
WO2025104796A1
WO2025104796A1 PCT/JP2023/040859 JP2023040859W WO2025104796A1 WO 2025104796 A1 WO2025104796 A1 WO 2025104796A1 JP 2023040859 W JP2023040859 W JP 2023040859W WO 2025104796 A1 WO2025104796 A1 WO 2025104796A1
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WIPO (PCT)
Prior art keywords
active species
ceiling
showcase
species generator
generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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PCT/JP2023/040859
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English (en)
French (fr)
Japanese (ja)
Inventor
彰則 清水
学 生沼
亜加音 野村
政郎 弓削
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2024517102A priority Critical patent/JP7570562B1/ja
Priority to PCT/JP2023/040859 priority patent/WO2025104796A1/ja
Publication of WO2025104796A1 publication Critical patent/WO2025104796A1/ja
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • 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
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22—Ionisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • F24F8/26—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media using ozone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features

Definitions

  • the present disclosure relates to an active species generator, a showcase, an air conditioner, a closed floor, and a method for inhibiting the growth of mold and microorganisms.
  • the present disclosure discloses technology for solving the above-mentioned problems, and aims to provide an active species generator, showcase, air conditioner, closed floor, and method for suppressing the growth of mold and microorganisms that can prevent and suppress the growth of mold and microorganisms on the ceiling and side wall surfaces near the ceiling of a closed space.
  • the active species generating device comprises: The device is equipped with a blower that draws in gas from the outside and generates an airflow, an active species generator that generates active species by a discharge phenomenon, and an outlet that blows the gas containing the active species from below upward.
  • the showcase disclosed in the present disclosure also includes: The active species generating device is installed on the top surface, and the device has at least one of a freezing function and a refrigeration function.
  • the air conditioner disclosed in this disclosure is It has a built-in active species generator.
  • the closed floor disclosed in the present disclosure has an active species generator disposed facing the ceiling, which generates active species by discharge and blows gas containing the active species from below toward the ceiling.
  • the method for inhibiting the growth of mold and microorganisms disclosed in the present disclosure further comprises: In an enclosed space having a ceiling, active species are generated by a discharge phenomenon, and gas containing the active species is blown from below toward the ceiling.
  • the active species generator, showcase, air conditioner, closed floor, and method for inhibiting the growth of mold and microorganisms according to the present disclosure can inhibit the growth of mold and microorganisms on the ceiling of a closed space and on the sidewall surfaces near the ceiling.
  • Fig. 1A is a diagram showing the configuration of a closed space in which an active species generator according to embodiment 1 is arranged.
  • Fig. 1B is a diagram showing the configuration of the closed space in which an active species generator is arranged, and shows a state in which the active species generator is operating.
  • 1 is a conceptual diagram showing a schematic configuration of an active species generation device according to a first embodiment.
  • 1 is a conceptual diagram showing a schematic configuration of an active species generation device according to a first embodiment.
  • FIG. 11 is a conceptual diagram showing a schematic configuration of an active species generation device according to a second embodiment.
  • FIG. 11 is a conceptual diagram showing a schematic configuration of an active species generation device according to a third embodiment.
  • FIG. 11 is a perspective view of an active species generator according to a third embodiment.
  • FIG. 11 is a side cross-sectional view of an active species generator according to a third embodiment.
  • FIG. 13 is a conceptual diagram showing a schematic configuration of an active species generation device according to a fourth embodiment.
  • FIG. 13 is a conceptual diagram showing a schematic configuration of an active species generation device according to a fifth embodiment.
  • FIG. 1 is a diagram showing the relationship between temperature and humidity in a closed space and the proliferation of mold and microorganisms.
  • FIG. 13 is a diagram showing an operation control flow of an active species generation device using a first sensor according to embodiment 5.
  • FIG. 13 is a diagram showing a generation amount control flow of an active species generation device using a first sensor according to embodiment 5.
  • FIG. 13 is a conceptual diagram showing a schematic configuration of an active species generation device according to a sixth embodiment.
  • FIG. 1 is a diagram showing the relationship between temperature and humidity in a closed space and the proliferation of mold and microorganisms.
  • FIG. 13 is a diagram showing an operation control flow of an active species generation device
  • FIG. 13 is a diagram showing an operation control flow of an active species generation device using a second sensor according to a sixth embodiment.
  • FIG. 13 is a diagram showing a generation amount control flow of an active species generation device using a second sensor according to a sixth embodiment.
  • Fig. 16A is a perspective view of an air conditioner according to embodiment 7.
  • Fig. 16B is a cross-sectional view showing a schematic configuration of an air conditioner according to embodiment 7.
  • FIG. 13 is a perspective view of a refrigerated/freezer showcase according to an eighth embodiment.
  • 13 is a cross-sectional view showing a schematic configuration of a showcase according to an eighth embodiment.
  • FIG. 13 is a cross-sectional view showing the flow of waste heat rising in an intake duct provided behind a showcase in accordance with embodiment 8.
  • FIG. 8 is a cross-sectional view showing the flow of waste heat rising in an intake duct provided behind a showcase in accordance with embodiment 8.
  • FIG. 13 is a diagram showing the state of a closed space in which a showcase according to an eighth embodiment is installed.
  • FIG. 13 is a cross-sectional view showing a schematic configuration of a showcase according to an eighth embodiment, in which a barrier protruding upward is provided on the front edge of the top surface.
  • Embodiment 1 The active species generation device, the closed floor, and the method for inhibiting the proliferation of mold and microorganisms according to the first embodiment will be described below with reference to the drawings.
  • 1A is a diagram showing the configuration of an enclosed space K in which an active species generation device 100 is disposed. The figure shows a state in which mold and microorganisms have proliferated on a ceiling S.
  • 1B is a diagram showing the configuration of the closed space K in which the active species generator 100 is disposed. The diagram shows a state in which the active species generator 100 is operating.
  • FIG. 2 is a conceptual diagram showing a schematic configuration of the active species generation device 100. As shown in FIG.
  • the active species generating device 100 includes a case 10, an outlet 11 located at the top of the case 10, an active species generator 12 housed in the case 10, and a blower 13 housed in the case 10 that blows air AR containing active species (ozone, negative ions, etc.) generated by the active species generator 12 upward through the outlet 11.
  • active species ozone, negative ions, etc.
  • the active species generating device 100 generates discharge active species (hereinafter simply referred to as active species) using the active species generator 12, and blows air AR containing the active species from the floor side (below) toward the ceiling (above) within the enclosed space K (floor).
  • the active species generator 100 is therefore installed on the floor, and air AR containing active species is blown upward from the upward-facing air outlet 11.
  • One example of the air outlet 11 is in a duct shape. By making the air outlet 11 duct-shaped, the directionality of the wind can be increased, improving the transport capacity of the active species.
  • Air AR containing low-humidity active species near the floor is blown upward from the downward direction of the enclosed space K to the area around the ceiling S, suppressing the growth of mold and microorganisms.
  • FIG. 3 is a conceptual diagram showing a schematic configuration of an active species generator 100B which is another example of the active species generator 100.
  • the active species generator 100B includes, in addition to the configuration of the active species generator 100A described above, a filter 14 that captures and purifies suspended matter in the air before it passes through the active species generator.
  • a filter 14 that captures and purifies suspended matter in the air before it passes through the active species generator.
  • the active species generating device includes: The device is equipped with a blower that draws in gas from the outside and generates an airflow, an active species generator that generates active species by a discharge phenomenon, and an outlet that blows the gas containing the active species from below to above.
  • a blower that draws in gas from the outside and generates an airflow
  • an active species generator that generates active species by a discharge phenomenon
  • an outlet that blows the gas containing the active species from below to above.
  • the active species generating device has Since it is equipped with a filter that collects suspended matter in the inhaled gas, This prevents dirt from adhering to the ceiling S and the side wall surfaces near the ceiling S, thereby enhancing the effect of inhibiting the growth of mold and microorganisms.
  • the closed floor according to the first embodiment is An active species generator that generates active species by discharge and blows gas containing the active species from below toward the ceiling is disposed facing the ceiling. The proliferation of mold and microorganisms on the ceiling S of the enclosed space K and on the side wall surfaces near the ceiling S can be suppressed.
  • the mold and microorganism growth inhibition method according to the first embodiment is as follows: In a closed space with a ceiling, active species are generated by a discharge phenomenon, and gas containing the active species is blown from below toward the ceiling. The proliferation of mold and microorganisms on the ceiling S of the enclosed space K and on the side wall surfaces near the ceiling S can be suppressed.
  • FIG. 4 is a conceptual diagram showing a schematic configuration of the active species generation device 200.
  • the active species generator 200 includes the same components as those of the active species generator 100 described in the first embodiment, and further includes a heater 15 that heats the air to be blown to a temperature higher than the surroundings.
  • a heater 15 that heats the air to be blown to a temperature higher than the surroundings.
  • a dehumidifier 16 can be used instead of the heater 15 to reduce the humidity of the air AR containing active species below the surroundings, and the same effect can be achieved.
  • the filter 14 described in the first embodiment may be used in combination.
  • the active species generating device is The device is equipped with a heater that heats the sucked gas, and blows out gas containing the active species that is hotter than the surroundings. By increasing the temperature near the ceiling S, decreasing the relative humidity near the ceiling S, and drying the ceiling S and the side wall surfaces near the ceiling S, the growth of mold and microorganisms can be further suppressed.
  • the active species generating device has The device is equipped with a dehumidifier that dehumidifies the sucked gas, and blows out gas containing the active species that is less humid than the surrounding area. Since the humidity of the air AR containing active species can be made lower than the surroundings, the same effect as in the case of installing a heater is achieved.
  • FIG. 5 is a conceptual diagram showing a schematic configuration of the active species generating device 300.
  • FIG. 6 is a perspective view of the activated species generator 312.
  • FIG. 7 is a cross-sectional side view of the activated species generator 312.
  • the active species generator 312 can simultaneously generate two types (or three or more types) of active species with different properties. As shown in Figures 6 and 7, the active species generator 312 includes two first discharge electrodes E1 that generate a discharge product DP1 (first active species), a second discharge electrode E2 that generates a discharge product DP2 (second active species), and a ground electrode EA.
  • the first discharge electrode E1, the second discharge electrode E2, and the ground electrode EA are fixed to the holding part H while being surrounded by an electrically insulating resin part (not shown), or are fixed to the holding part H by screws or adhesive.
  • the two first discharge electrodes E1 are formed to sandwich the cylindrical ground electrode EA, spaced apart from it, and protruding from the holding part H towards one side X1 of the first direction X (the object to be treated, i.e. the ceiling side).
  • the first discharge electrode E1 is also configured as a conical needle electrode whose diameter tapers from the base end to the tip end.
  • the second discharge electrode E2 is spaced apart from the ground electrode EA, aligned in a row in the first direction X, and arranged so that its tip faces the ground electrode EA in the first direction X.
  • the second discharge electrode E2 is a needle-shaped electrode.
  • the ground electrode EA is a cylindrical electrode that projects in the first direction X, so when viewed from one side X1 of the first direction X, the second discharge electrode E2 appears to be arranged inside the ground electrode EA.
  • the first discharge electrode E1, the second discharge electrode E2, and the ground electrode EA are arranged so that the discharge distance L2 between the second discharge electrode E2 and the ground electrode EA is smaller than the discharge distance L1 between the first discharge electrode E1 and the ground electrode EA.
  • a high voltage obtained from a high voltage conversion unit (not shown) is applied to the second discharge electrode E2
  • a discharge occurs between the second discharge electrode E2 and the ground electrode EA, generating a discharge product DP2 different from the discharge product DP1 generated by the first discharge electrode E1.
  • the second discharge electrode E2 is described as being composed of a needle-shaped electrode, it is not limited to being a needle-shaped electrode.
  • the second discharge electrode E2 is preferably shaped with a tapered tip, but is not limited to this shape and may be columnar.
  • the second discharge electrode E2 may also be an electrode made of equal fine wires, or a brush-like electrode made of multiple bundled fine wires.
  • the material of the second discharge electrode E2 is metal, but is not limited to metal, and it may be made of other conductive materials, such as conductive carbon fiber.
  • the discharge product DP2 generated from the second discharge electrode E2 is different from the discharge product DP1 generated from the first discharge electrode E1 as described above.
  • the discharge product DP1 is negative ions and the discharge product DP2 is ozone. Because the discharge distance between the second discharge electrode E2 and the ground electrode EA is smaller than the discharge distance between the first discharge electrode E1 and the ground electrode EA, the electrons emitted from the second discharge electrode E2 are easily accelerated between the second discharge electrode E2 and the ground electrode EA and are in a high-energy state. For this reason, the electrons between the second discharge electrode E2 and the ground electrode EA include electrons with energy higher than 5.12 eV, which is the dissociation energy of oxygen molecules in the air.
  • discharge product DP1 and discharge product DP2 are not limited to the negative ions and ozone described above, but may also be, for example, a difference in the ratio or concentration of active species.
  • the active species generator 312 generates a discharge product DP2 different from the discharge product DP1 from the second discharge electrode E2 in addition to the discharge product DP1 generated from the first discharge electrode E1. Therefore, the treatment target can be treated using both the discharge product DP1 and the discharge product DP2, thereby further enhancing the sterilization and inactivation effect of mold, microorganisms, etc.
  • discharge products DP1 and discharge products DP2 change, and changes in concentration are likely to occur; however, the effect of inactivating microorganisms can be improved by generating discharge products DP1 and discharge products DP2 near the ground, where humidity is low, in the space, and then blowing them near the ceiling, where humidity is high.
  • FIG. 8 is a conceptual diagram showing a schematic configuration of the active species generating device 400.
  • the active species generator 400 includes an air outlet 411 capable of changing the air blowing direction.
  • a plurality of active species generators 400 work together to supply air AR containing active species to the periphery of the ceiling S in a concentrated manner, thereby targeting locations where mold and microorganisms are likely to grow.
  • the active species generating device according to the fourth embodiment is The direction of the air outlet can be changed, The active species acts efficiently, increasing the effectiveness of inhibiting the growth of mold and microorganisms.
  • FIG. 9 is a conceptual diagram showing a schematic configuration of an active species generating device 500.
  • FIG. Fig. 10 is a diagram showing the relationship between the temperature and humidity of the closed space K and the proliferation of mold and microorganisms.
  • the combination of temperature and humidity shown in area A of Fig. 10 shows an environment of the closed space K in which mold and microorganisms are extremely unlikely to grow.
  • the combination of temperature and humidity shown in area B of Fig. 10 shows an environment of the closed space K in which mold and microorganisms are unlikely to grow.
  • the combination of temperature and humidity shown in area C of Fig. 10 shows an environment of the closed space K in which mold and microorganisms are likely to grow.
  • the active species generator 500 includes a first sensor 17 (temperature and humidity sensor) that detects temperature and humidity.
  • the active species generator 500 operates in a temperature and humidity environment that is favorable for the proliferation of mold and microorganisms, based on the temperature and humidity information from the first sensor 17.
  • FIG. 11 is a diagram showing an operation control flow of the active species generation device 500 using the first sensor.
  • the active species generating device 500 acquires the temperature and humidity from the first sensor 17, and when it is determined that the temperature and humidity exceed the threshold value of the combination of temperature and humidity at which mold and microorganisms are likely to grow as shown in Fig. 10 (step S001-YES), it starts the operation of the active species generator 12 (step S002).Then, when a predetermined fixed time has elapsed (step S003), it stops the operation of the active species generator 12 (step S004) and returns to step S001.
  • step S001 of determining the temperature and humidity that the temperature and humidity do not exceed the threshold value (S001-NO)
  • the process waits for a certain period of time (step S005) and returns to step S001.
  • the active species generating device 500 can efficiently operate the active species generator 12, contributing to energy conservation.
  • FIG. 12 is a diagram showing the generation amount control flow of the active species generator 500 using the first sensor.
  • the operation control flow explained using FIG. 11 controlled the ON/OFF of the active species generator 12 based on the temperature and humidity, but in the generation amount control flow shown in FIG. 12, the generation amount of active species is controlled by the temperature and humidity obtained from the first sensor 17.
  • the active species generator 12 is operating normally (step S000).
  • the active species generator 500 acquires the temperature and humidity from the first sensor 17, and when it determines that the temperature and humidity exceed the temperature and humidity thresholds at which mold and microorganisms are likely to grow, as shown in FIG. 10 (step S001-YES), it increases the amount of active species generated in the active species generator 12 (step S006). Then, when a predetermined period of time has elapsed (step S007), it returns the operation of the active species generator 12 to normal operation (step S008) and returns to step S000.
  • step S001 of determining the temperature and humidity that the temperature and humidity do not exceed the threshold value (S001-NO) If it is determined in step S001 of determining the temperature and humidity that the temperature and humidity do not exceed the threshold value (S001-NO), the amount of active species generated is reduced (step S009), the system waits for a certain period of time (step S010), and the process returns to step S000. In this way, the generation amount control flow can efficiently change the operating state of the active species generator 12, contributing to energy conservation.
  • the active species generator 12 can be controlled more accurately.
  • the active species generating device is A temperature and humidity sensor is provided to control the operation of the active species generator according to the humidity and temperature of the enclosed space.
  • the operating state of the active species generator 12 can be changed efficiently, contributing to energy conservation.
  • FIG. 13 is a conceptual diagram showing a schematic configuration of the active species generating device 600.
  • the active species generator 600 includes a second sensor 18 (illuminance sensor) that detects the illuminance of the closed space K.
  • the active species generator 600 operates in a dark environment where no one is present in the closed space K, such as at night, based on the illuminance information from the second sensor 18.
  • FIG. 14 is a diagram showing an operation control flow of the active species generation device 600 using the second sensor 18.
  • the active species generating device 600 acquires the illuminance of the closed space K from the second sensor 18, and when it determines that the illuminance of the closed space K is less than a predetermined threshold value (step S601-YES), it starts the operation of the active species generator 12 (step S002). Then, when a predetermined fixed time has elapsed (step S003), it stops the operation of the active species generator 12 (step S004) and returns to step S001.
  • step S001 of determining the illuminance of the closed space K determines the illuminance of the closed space K that the illuminance is not less than the threshold value (step S601-NO)
  • the process waits for a certain period of time (step S005) and returns to step S001.
  • the active species generator 600 can operate the active species generator 12 in a dark environment where there is little air flow and no one is present in the closed space K, such as at night, thereby contributing to energy conservation.
  • FIG. 15 is a diagram showing the generation amount control flow of the active species generator 600 using the second sensor 18.
  • the operation control flow explained using FIG. 14 controlled the ON/OFF of the active species generator 12 based on the illuminance of the closed space K, but in the generation amount control flow shown in FIG. 15, the generation amount of active species is controlled by the illuminance of the closed space K obtained from the second sensor 18.
  • the active species generator 12 is operating normally (step S000).
  • the active species generator 600 acquires the illuminance of the closed space K from the second sensor 18, and when it determines that the illuminance is less than a predetermined threshold value (step S601-YES), it increases the active species generated in the active species generator 12 (step S006). Then, after a predetermined fixed time has elapsed (step S007), it returns the operation of the active species generator 12 to normal operation (step S008) and returns to step S000.
  • step S001 of determining the illuminance of the closed space K determines whether the illuminance is below the threshold (S601-NO)
  • step S009 the amount of active species generated is reduced
  • step S010 the system waits for a certain period of time (step S010), and then returns to step S000.
  • the operating state of the active species generator 12 can be changed efficiently in dark environments where there is little air flow and no one is present in the closed space K, such as at night, thereby contributing to energy conservation.
  • the active species generating device is Since an illuminance sensor is provided and the operation of the active species generator is controlled according to the illuminance in the closed space, The operating state of the active species generator 12 can be changed efficiently, contributing to energy conservation.
  • FIG. 16A is a perspective view of the air conditioner 50.
  • FIG. 16B is a cross-sectional view showing a schematic configuration of the air conditioner 50.
  • the air conditioner 50 is a floor-mounted type air conditioner equipped with the active species generator described in the first to sixth embodiments, and blows air AR containing active species in the direction of the ceiling S.
  • the air conditioner 50 includes the active species generator 12 or the active species generator 312, a blower 13, and a heat exchanger 715.
  • the air conditioner according to the seventh embodiment is The active species generator is built in, By simply installing the active species generator 712, the air in the enclosed space K can be kept clean.
  • FIG. 17 is a perspective view of a refrigerated freezer showcase 60 (hereinafter simply referred to as showcase 60, which is provided with a cooling device having at least one of a freezing function and a refrigerating function).
  • FIG. 18 is a cross-sectional view showing a schematic configuration of the showcase 60.
  • FIG. 19 is a cross-sectional view showing the flow of waste heat rising inside an intake duct 64 provided behind the showcase 60.
  • FIG. FIG. 20 is a diagram showing the state of the enclosed space K in which the showcase 60 is installed.
  • 17 and 18 is used in a store to display frozen foods, refrigerated foods, beverages, etc.
  • a condenser 62, a heat exchanger 63, etc. are built into a housing 61. 20, in a closed space K in which a showcase 60 that blows cold air is installed, warm, humid air AH heated by a heater or the like accumulates near the ceiling S. When this warm air AH comes into contact with the cold air AC blown from the showcase 60, condensation CO occurs on the ceiling S and on the side wall surfaces near the ceiling S, which becomes a factor in the proliferation of mold and microorganisms.
  • the showcase 60 has any one of the active species generators 100, 100A, 100B, 200, 300, 400, 500, and 600 described in the first to sixth embodiments mounted on the top surface 60U. Since air AR containing active species can be blown from a location close to the ceiling S, the active species can be effectively dispersed in the vicinity of the ceiling S, where humidity is particularly high.
  • waste heat generated by the condenser 62 of the showcase 60 is discharged from the back and bottom of the showcase 60, and a portion of this waste heat is sucked in through the intake duct 64 connected to the active species generators 100-600.
  • the waste heat of the condenser 62 rises inside the intake duct 64 and is sucked into the active species generators 100-600 installed on the top surface 60U of the showcase 60.
  • the intake duct 64 may be provided inside the housing 61, or may be added later.
  • FIG. 21 is a cross-sectional view showing a schematic configuration of a showcase 60 in which a barrier 65 protruding upward is provided on a front edge 60UF of a top surface 60U.
  • a barrier 65 that blocks the cold air AC generated inside the showcase 60 from the active species generators 100 to 600, the active species generators 100 to 600 can be prevented from directly drawing in the cold air AC from the showcase 60. This makes it possible to prevent condensation from occurring due to the transport of cooled air with high relative humidity to the ceiling S and the side wall surfaces in the vicinity of the ceiling S, and allows the active species generators 100 to 600 to be used effectively.
  • the showcase according to the eighth embodiment is The active species generating device is installed on the top surface and has a cooling device.
  • the active species can be effectively dispersed in the vicinity of the ceiling S where humidity is particularly high.
  • the showcase according to the eighth embodiment is An intake duct is provided to supply waste heat generated from the condenser of the showcase to the active species generator, thereby suppressing the intrusion of cold air AC and allowing warm air AH containing active species and having a low relative humidity to be blown from a location close to the ceiling S, thereby further improving the inactivation effect of mold and microorganisms.
  • the showcase according to the eighth embodiment is A barrier is provided on the top surface to block the cold air generated inside the showcase from the active species generator. It is possible to prevent the cool air AC from being directly sucked in from the showcase 60. This makes it possible to prevent the ceiling S and the side wall surfaces in the vicinity of the ceiling S from being cooled by radiation and causing condensation.
  • the active species generators 100 to 600 can be effectively used.
  • Air conditioner 60 Showcase, 60U Top, 60UF Front Edge, 61 housing, 62 condenser, 63, 715 heat exchanger, 64 intake duct, 65 barrier, AR air containing active species, DP1, DP2 discharge products, E1 first discharge electrode, E2 second discharge electrode, EA ground electrode, H holding part, K enclosed space, L1, L2 discharge distance, AC cold air, AH warm air, CO condensation, S ceiling, X first direction.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
PCT/JP2023/040859 2023-11-14 2023-11-14 活性種発生装置、ショーケース、空調機、閉塞されたフロア、および、カビおよび微生物の繁殖抑制方法 Pending WO2025104796A1 (ja)

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JP2007151998A (ja) * 2005-12-08 2007-06-21 Sharp Corp 空気清浄機及び空気清浄方法
JP2007162966A (ja) * 2005-12-09 2007-06-28 Sharp Corp 浴室用リモコン装置
JP2011242104A (ja) * 2010-05-21 2011-12-01 Nakano Refrigerators Co Ltd 送風機の運転装置及び送風機の運転方法
JP2012165937A (ja) * 2011-02-16 2012-09-06 Panasonic Corp イオン発生装置
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JP2004293893A (ja) * 2003-03-26 2004-10-21 Sharp Corp 空気調和機
JP2005095649A (ja) * 2003-05-14 2005-04-14 Sharp Corp 空気調節装置
JP2005076904A (ja) * 2003-08-28 2005-03-24 Sharp Corp 空気調節装置
JP2007151998A (ja) * 2005-12-08 2007-06-21 Sharp Corp 空気清浄機及び空気清浄方法
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JP2011242104A (ja) * 2010-05-21 2011-12-01 Nakano Refrigerators Co Ltd 送風機の運転装置及び送風機の運転方法
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