JP2009050722A - Disinfection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disinfection system which can disinfect and deodorize air supplied to the interior of a room of an office building, etc by simple composition. <P>SOLUTION: In the disinfection system which takes in the open air and leads this taken in air to air-conditioned space through a ventilation path 120, an electrolytic water formation section 5, which electrolyzes water to form electrolytic water, and an air disinfection section 4, which is arranged within the ventilation path 120 and disinfects the air by bringing the electrolytic water supplied from the electrolytic water formation section 5 and the air into contact, are included. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sterilization system for sterilizing air (outside air) supplied from the outside to the inside of a building or the like.

DESCRIPTION OF RELATED ART Conventionally, the rooftop type air conditioning apparatus arrange | positioned, for example on the roof of buildings, such as a building, is known (for example, refer patent document 1). This type of rooftop type air conditioner is integrally provided with a heat source side unit having a compressor and a heat source side heat exchanger, and a use side unit having a blower and a use side heat exchanger. Air in the building is sucked in, and the sucked air is heat-exchanged in the use side heat exchanger, and then supplied again into the building.
JP 2000-74414 A

  By the way, since the rooftop type air conditioner is provided in a large space facility where an unspecified number of people stay for a long time, such as a theater, a movie theater, a hospital, or a shopping center, for example, the rooftop type air conditioner is cleaned in this large space ( It is desired to supply sterilized air.

  However, since a large amount of air is supplied from the rooftop type air conditioner into the building, it is difficult to sterilize the large amount of air.

  Therefore, an object of the present invention is to provide a sterilization system capable of sterilizing and deodorizing air supplied into a room such as a building with a simple configuration.

  In order to solve the above-mentioned problems, the present invention is a sterilization system that takes in outside air and guides the taken-in air to an air-conditioned space through a ventilation path, and electrolyzes water to generate electrolyzed water. An electrolyzed water generating unit, and an air sterilizing unit that is disposed in the air blowing path and sterilizes the air by bringing the electrolyzed water supplied from the electrolyzed water generating unit into contact with the air, Sterilization system.

  2. The sterilization system according to claim 1, wherein the electrolyzed water brought into contact with the air is dripped, then collected and again becomes electrolyzed water, and is led to the air sterilization unit again by operation of the pump, To do.

  The sterilization system according to claim 2, further comprising a water supply pipe for supplying city water when pre-electrolyzed water is insufficient.

  According to the present invention, the electrolyzed water is supplied to the air sterilization unit arranged in the air passage of the air conditioner, so that the air passing through the air passage is sterilized by the air sterilization unit. Therefore, the sterilized air can be widely distributed in the air-conditioned space, and air sterilization and deodorization in the air-conditioned space can be performed with a simple configuration.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram showing a movie theater 100 as a large space facility in which a rooftop type air conditioner (hereinafter referred to as an air conditioner) 110 is arranged.

  As shown in FIG. 1, a movie theater 100 is provided with a screen 101 in the front, and a passenger seat 102 is provided in a staircase form behind the screen 101. On the other hand, the ceiling part 103 of the movie theater 100 is provided with a plurality of air outlets 104 for blowing conditioned air from the air conditioner 110 into the hall. These air outlets 104 are connected to a supply port 111 of the air conditioner 110 through a supply duct 105.

  Further, the floor portion 106 of the movie theater 100 is provided with a suction port 107 for sucking in the air (inside air) in the vicinity of the floor portion 106. The suction port 107 is provided on the back side of the screen 101, and is connected to the inside air introduction port 112 of the air conditioner 110 via an intake duct 108 that extends upward in the back space of the screen 101. Further, the air conditioner 110 is formed with an outside air inlet 113 for introducing outdoor air (outside air) into the air conditioner 110.

  Air (inside air) in the movie theater 100 is sucked from the suction port 107 as shown by an arrow X, and is guided into the air conditioner 110 through the intake duct 108 and the inside air introduction port 112. Here, since the outside air is guided into the air conditioner 110 through the outside air inlet 113, the outside air and the inside air are mixed in the air conditioner 110. The mixed air is heat-exchanged by a use side heat exchanger (described later), and then supplied to the movie theater 100 as conditioned air from the outlet 104 through the supply port 111 and the supply duct 105.

  The air conditioner 110 is disposed on the roof of a structure (building) 200 having a large space facility where an unspecified number of people stay for a long time, such as a movie theater, a hospital, or a shopping center, for example. As shown in FIG. 2, the heat source side unit 1 and the use side unit 2 are integrally provided in one housing 114.

  Specifically, the inside of the housing 114 is divided by a partition plate 115, the heat source side unit 1 is arranged in one chamber 116, and the use side unit 2 is arranged in the other chamber 117. The heat source side unit 1 and the use side unit 2 are connected by a refrigerant pipe 10 to form a refrigerant circuit.

  As shown in FIG. 2, the heat source side unit 1 includes a compressor 11 provided in the refrigerant pipe 10. An accumulator 12 is connected to the suction side of the compressor 11, and a four-way valve 13 is connected to the discharge side of the compressor 11. The heat source side heat exchanger 14 and the electric expansion valve 15 are connected in order. Further, the heat source side unit 1 is provided with a heat source side blower 16 that blows air toward the heat source side heat exchanger 14.

  On the other hand, the use side unit 2 includes a use side heat exchanger 21 connected to the electric expansion valve 15 via the refrigerant pipe 10 and a use side blower 22 that blows air toward the use side heat exchanger 21. The use side heat exchanger 21 is connected to the four-way valve 13 via the refrigerant pipe 10.

  During the cooling operation, the four-way valve 13 is switched so that the refrigerant flows in the direction of the solid line arrow shown in FIG. The high-pressure refrigerant discharged from the compressor 11 reaches the heat source side heat exchanger 14 via the accumulator 12, is condensed in the heat source side heat exchanger 14, and is sent to the electric expansion valve 15. The high-pressure refrigerant expands at the electric expansion valve 15 and flows into the use side heat exchanger 21, and evaporates in the use side heat exchanger 21, thereby cooling the air introduced into the use side unit 2. The refrigerant evaporated in the use side heat exchanger 21 returns to the suction side of the compressor 11.

  Further, during the heating operation, the four-way valve 13 is switched so that the refrigerant flows in the direction of the dashed arrow shown in the drawing. The high-pressure refrigerant discharged from the compressor 11 is sent to the use side heat exchanger 21, and is condensed in the use side heat exchanger 21 to heat the air introduced into the use side unit 2. The refrigerant condensed in the use side heat exchanger 21 expands in the electric expansion valve 15 and flows into the heat source side heat exchanger 14, evaporates in the heat source side heat exchanger 14, and then accumulates in the accumulator 12 through the four-way valve 13. To return to the suction side of the compressor 11.

  In the present embodiment, the air conditioning apparatus 110 is attached with a sterilization system 150 that sterilizes air introduced from the movie theater 100 as a large space facility to the use side unit 2 by operation of the use side blower 22. Yes. As shown in FIG. 2, the sterilization system 150 includes an air sterilization unit 4 that performs sterilization of air by bringing electrolyzed water containing active oxygen species into contact with air introduced into the use-side unit 2, and a predetermined sterilization unit. Electrolyzed water containing ionic species to generate electrolyzed water containing active oxygen species and supply it to the air sterilizing unit 4 and water flowing down from the air sterilizing unit 4 A circulation supply unit 6 that circulates and supplies this water to the electrolyzed water generation unit 5 is also provided.

  More specifically, the other chamber 117 in which the use side unit 2 is provided is further divided into a heat exchange chamber 119 and a sterilization chamber (air blowing path) 120 by a partition plate 118 as shown in FIG. In the heat exchange chamber 119, the above-described inside air introduction port 112 and outside air introduction port 113 are formed, and the use side heat exchanger 21 is arranged in a bracing manner downstream of the inside air introduction port 112 and the outside air introduction port 113. Yes. The partition plate 118 is provided with the use side blower 22, and the air in the heat exchange chamber 119 is blown into the sterilization chamber 120 by the operation of the use side blower 22. The sterilization chamber 120 is provided with an air sterilization unit 4, and a supply port 111 is formed on the downstream side of the air sterilization unit 4. As a result, the air introduced into the use side unit 2 is sterilized by the air sterilization unit 4 disposed in the sterilization chamber 120 when passing through the sterilization chamber 120 serving as a ventilation path. The air thus supplied is supplied into the movie theater 100 from the outlet 104 through the supply port 111 and the supply duct 105.

  Next, each component of the sterilization system 150 will be described.

  As shown in FIG. 4, the air sterilization unit 4 includes a plurality of (12 in this embodiment) gas-liquid contact members 41 </ b> A <b> 1 to 41 </ b> F <b> 2 that have high water retention and are formed to have substantially the same size. Specifically, the air sterilization unit 4 includes six systems (system A to system F) including a pair of gas-liquid contact members (for example, gas-liquid contact members 41A1 and 41A2) arranged side by side. Has been.

  The gas-liquid contact members 41A1 to 41F2 are members for bringing electrolyzed water into contact with the air blown to the gas-liquid contact members 41A1 to 41F2. The air sucked into the sterilization chamber 120 in these gas-liquid contact members 41A1 to 41F2 comes into contact with the electrolyzed water containing a predetermined active oxygen species, thereby inactivating viruses contained in the air. Air sterilization is performed.

  The gas-liquid contact members 41A1 to 41F2 are filter members having a three-dimensional structure similar to a honeycomb structure, and have a structure in which an element portion in contact with a gas is supported by a frame. Although not shown, the element portion is configured by laminating a corrugated plate member and a flat plate member, and a plurality of substantially triangular openings are provided between the corrugated plate member and the flat plate member. Is formed. Therefore, a wide gas contact area is ensured when air is passed through the element portion, electrolysis water can be dripped, and the structure is difficult to clog.

  The element part is made of a material that is hardly deteriorated by electrolyzed water, for example, polyolefin resin (polyethylene resin, polypropylene resin, etc.), PET (polyethylene terephthalate) resin, vinyl chloride resin, fluorine resin (PTFE, PFA, ETFE, etc.) Alternatively, a material such as a ceramic material is used, and in this configuration, a PET resin is used. In addition, the element portion is subjected to a hydrophilic treatment, and the affinity for the electrolyzed water is enhanced, whereby the water retention (wetability) of the electrolyzed water of the gas-liquid contact members 41A1 to 41F2 is maintained, which will be described later. Contact between the active oxygen species (active oxygen substance) and air is sustained for a long time.

  The number of gas-liquid contact members is determined according to the amount of air passing through the sterilization chamber 120. In this embodiment, the amount of air passing through the sterilization chamber 120 and the sterilization of the gas-liquid contact member 41A are determined. A number of gas-liquid contact members calculated from the capacity (gas contact area) and capable of sufficiently sterilizing the air are arranged in the sterilization chamber 120. A drain pan 44 that receives water discharged from the gas-liquid contact members 41A1 to 41F2 is disposed below the gas-liquid contact members 41A1 to 41F2.

  Next, the structure of the gas-liquid contact member of each system will be described. For example, in the system A, sprinkling boxes 42A1 and 42A2 for uniformly dispersing electrolytic water to the gas-liquid contact members 41A1 and 41A2 are assembled on the gas-liquid contact members 41A1 and 41A2. The watering boxes 42A1 and 42A2 include a tray member that temporarily stores electrolyzed water. A plurality of watering holes (not shown) are opened on the side surfaces of the tray member, and the gas-liquid contact members 41A1 and 41A2 are formed from the watering holes. Electrolytic water is dripped with respect to.

  In addition, on the upper surfaces of the gas-liquid contact members 41A1 and 41A2, a flow dividing sheet (not shown) is disposed in order to efficiently disperse the electrolyzed water dropped from the watering boxes 42A1 and 42A2 in the element portion. This diversion sheet is a sheet (woven fabric, non-woven fabric, etc.) made of a fiber material having liquid permeability, and one or more are provided along the cross section in the thickness direction of the gas-liquid contact members 41A1, 41A2.

  Further, an electrolyzed water tray 43A for receiving water flowing down from the gas-liquid contact members 41A1 and 41A2 is attached to the lower part of the gas-liquid contact members 41A1 and 41A2. A drain hose 45A that guides the water received by the electrolyzed water tray 43A to the drain pan 44 (FIG. 4) is attached to the bottom surface of the electrolyzed water tray 43A. Since the configurations of the other systems (system B to system F) are substantially the same as those of the above-described system A, the same reference numerals are given and description thereof is omitted.

  Further, as shown in FIG. 4, the circulation supply unit 6 is received by a water storage tank 61 (water tank), a water supply pump 62 that supplies water in the water storage tank 61 to the electrolyzed water generation unit 5, and the drain pan 44. And a circulation path 63 for returning water to the water storage tank 61. The water storage tank 61 and the water pump 62 are accommodated in one box 64 and are disposed near the air conditioner 110 on the roof of the building 200. Thereby, since the pipe length of the water supply path 52 (after-mentioned) to the circulation path 63 and the electrolyzed water production | generation part 5 can be constructed shortly, while being able to aim at reduction of construction cost and effective utilization of rooftop space. Can do.

  Further, the water storage tank 61 is provided with a water supply pipe 65 for supplying city water (tap water) to the water storage tank 61. The water supply pipe 65 is supplied with water or a water supply valve 66 according to the amount of water in the water storage tank 61. A ball tap 67 for stopping water is connected. Here, the water supply source connected to the water supply pipe 65 and supplying water to the water storage tank 61 may be city water (tap water) or water stored in a water supply tank or the like. The water stored in the water tank or the like may be water that contains ion species such as chloride ions in advance, such as tap water, or a dilute concentration of chloride ions such as well water. When water is used, the water may be adjusted to tap water by adding chloride ions to the water. In the present embodiment, these are collectively referred to as water.

  In this configuration, a water circulation method is adopted in which the water received by the drain pan 44 is returned to the water storage tank 61 through the circulation path 63. By effectively using a small amount of water, air is efficiently sterilized over a long period of time. be able to. Further, since the water level in the water storage tank 61 is reduced due to evaporation, the ball tap 67 is opened and an appropriate amount of tap water is supplied from the water supply port. Thus, by circulating the water, the amount of water used can be reduced compared to the method of discharging the water received by the drain pan 44 as it is, and the running cost when operating the sterilization system 150 can be reduced. Can be planned. In particular, in the rooftop type air conditioner 110 as in the present embodiment, since the amount of air blown into the building 200 is large, the air-liquid contact members 41A1 to 41F2 are supplied to sterilize this air. The amount of water increases according to the amount of air. Therefore, in the rooftop type air conditioner 110, the water saving effect by returning the water received by the drain pan 44 to the water storage tank 61 through the circulation path 63 is greater.

  Further, the water storage tank 61 is formed with a discharge port 61A for discharging water in the water storage tank 61, and a drain pipe 69 is connected to the discharge port 61A via a drain valve 68. For example, the drain valve 68 is opened each time the operation time of the sterilization system 150 reaches a predetermined time, and the water in the water storage tank 61 is replaced. In this configuration, the outlet 69 </ b> A of the drain pipe 69 is provided so as to be directed to the drain groove 200 </ b> A formed on the roof of the building 200. According to this, since all the water discharged from the water storage tank 61 through the drain pipe 69 flows into the drain groove 200A, it is prevented from being drained to the floor surface of the roof of the building 200. It can prevent troubles.

  The electrolyzed water generating unit 5 includes a plurality (six in this embodiment) of electrolyzing units 51A to 51F that electrolyze water to generate electrolyzed water, and water is supplied to the electrolyzing units 51A to 51F from the water storage tank 61, respectively. Water supply channels 52A to 52F to be connected are connected. These water supply passages 52A to 52F are formed by branching one water supply passage 52 connected to the water supply pump 62 into six, and although not shown, the water supplied from the water supply pump 62 is supplied to each water supply water. It is comprised so that it may be equally divided into the paths 52A-52F.

  Electrolytic water injection tubes 56A to 56F are connected to the electrolytic units 51A to 51F to supply electrolytic water from the electrolytic units 51A to 51F to the gas-liquid contact members 41A1 to 41F2 of the systems A to F, respectively. ing. These electrolyzed water injection tubes 56A to 56F are branched into two, respectively. As shown in FIG. 5, for example, the electrolyzed water injection tube 56A of the system A is divided into two branch pipes 56A1 and 56A2 at the downstream end. Branched. These branch pipes 56A1 and 56A2 are connected to watering boxes 42A1 and 42A2, respectively, and supply electrolytic water to the gas-liquid contact members 41A1 and 41A2 through the watering boxes 42A1 and 42A2. Moreover, electrolysis unit 51A-51F is accommodated in the one box 54, and is arrange | positioned adjacent to the air conditioning apparatus 110 (especially air sanitization part 4). According to this, since the piping length of the electrolyzed water injection tubes 56A to 56F can be shortened, the construction cost can be reduced.

  Next, the configuration of the electrolysis unit 51A will be described. Since the electrolysis units 51B to 51F have substantially the same configuration as the electrolysis unit 51A, description thereof is omitted. As shown in FIG. 6, the electrolysis unit 51A has an electrolysis unit body 55A to which water is supplied from the water storage tank 61 (FIG. 4) through the water supply path 52A. At least a pair of electrodes 57A and 58A are disposed inside the electrolysis unit main body 55A. By applying a voltage between the electrodes 57A and 58A, water is electrolyzed and electrolyzed water containing active oxygen species is supplied. Generate.

  Here, the reactive oxygen species are oxygen molecules having an oxidation activity higher than that of normal oxygen and related substances, and so-called narrow definition such as superoxide anion, singlet oxygen, hydroxyl radical, or hydrogen peroxide. These active oxygens include so-called broad active oxygens such as ozone and hypohalous acid.

  The electrodes 57A and 58A are, for example, two electrode plates having a base made of titanium (Ti) and a coating layer made of iridium (Ir) and platinum (Pt).

  When a voltage is applied between the electrodes 57A and 58A, the cathode electrode (cathode) reacts as shown in the following formula (1).

2H ₂ O + 2e ⁻ → H ₂ + 2OH ⁻ (1)
The anode electrode (anode) reacts as shown in the following formula (2).

2H ₂ O → O ₂ + 4H ⁺ + 4e ⁻ (2)
When the reactions at the cathode and anode electrodes are combined, water is electrolyzed as shown in the following formula (3).

2H ₂ O → 2H ₂ + O ₂ (3)
Along with this reaction, in the anode electrode, chlorine ions (chloride ions: Cl ⁻ ) contained in water react as shown in the following formula (4) to generate chlorine (Cl ₂ ).

2Cl ⁻ → Cl ₂ + 2e ⁻ (4)
Further, this chlorine reacts with water as shown in the following formula (5) to generate hypochlorous acid (HClO) and hydrogen chloride (HCl).

Cl ₂ + H ₂ O → HClO + HCl (5)
Hypochlorous acid (active oxygen species in a broad sense) generated at the anode electrode has a strong oxidizing action and bleaching action. An aqueous solution in which hypochlorous acid is dissolved, that is, electrolyzed water generated by the electrolysis unit 51A, exhibits various air cleaning effects such as inactivation of viruses and the like, sterilization, and decomposition of organic compounds. Thus, when the electrolyzed water containing hypochlorous acid is dropped onto the gas-liquid contact members 41A and 41B via the water spray boxes 42A1 and 42A2, the air blown out by the use-side blower 22 is gas-liquid contact member 41A, Contact with hypochlorous acid at 41B. As a result, viruses or the like floating in the air are inactivated, and odorous substances contained in the air are decomposed by reacting with hypochlorous acid or ionized and dissolved. Accordingly, the air is sterilized and deodorized, and the purified air is discharged from the gas-liquid contact members 41A and 41B.

  An example of influenza virus is given as an action mechanism of inactivation of viruses and the like by reactive oxygen species. The above-mentioned reactive oxygen species have the action of destroying and eliminating (removing) the surface protein (spike) of the virus essential for influenza virus infection. When this surface protein is destroyed, the influenza virus and the receptor (receptor) necessary for the infection of the influenza virus are not bound, and the infection is prevented. For this reason, the influenza virus floating in the air loses infectivity by contacting the electrolyzed water containing active oxygen species in the gas-liquid contact members 41A and 41B, and the infection is prevented.

  Therefore, by disposing the gas-liquid contact members 41A1 to 41F2 in the sterilization chamber 120 of the rooftop type air conditioner 110, the air passing through the sterilization chamber 120 is sterilized by the gas-liquid contact members 41A1 to 41F2. As shown in FIG. 1, the sterilized air can be widely distributed in the movie theater 100, and air sterilization and deodorization in a large space facility can be easily and efficiently performed.

  Here, the switching of the electrodes for applying a positive potential to any side of the electrodes 57A and 58A in the electrolysis unit 51A can be performed by reversing the polarity of the electrodes. This can be done by changing (reversing) the voltage applied to the electrodes 57A and 58A by the control means.

  In addition, the concentration of the active oxygen species in the electrolytic water is adjusted to a concentration that inactivates viruses to be sterilized. The concentration of the active oxygen species is adjusted by adjusting a voltage applied between the electrodes 57A and 58A and adjusting a current value flowing between the electrodes 57A and 58A.

For example, when a positive potential is applied to the electrode 57A and the current value flowing between the electrodes 57A and 58A is 20 mA (milliampere) / cm ² (square centimeter), the predetermined free residual chlorine concentration (for example, 1 mg (milligram)). ) / L (liter)). Further, the concentration of hypochlorous acid in the electrolytic water can be adjusted to a high concentration by changing the voltage applied between the electrodes 57A and 58A and increasing the current value.

  According to this embodiment, the rooftop type air conditioner 110 disposed on the roof of the building 200 is a sterilization system 150 that sterilizes air flowing through a ventilation path into the building 200, and electrolyzes water. The electrolyzed water generating unit 5 that generates electrolyzed water and the sterilization chamber 120 in the air conditioner 110 are brought into contact with the above-mentioned air by bringing the electrolyzed water supplied from the electrolyzed water generating unit 5 into contact with the air. An air sterilization unit 4 for sterilization, a water storage tank 61 that is provided on the roof of the building 200 and stores water supplied from an external water supply source, and water supply that connects between the water storage tank 61 and the electrolyzed water generation unit 5 The water stored in the water storage tank 61 is supplied to the electrolyzed water generating unit 5 in conjunction with the air conditioner 110 via the water supply channel 52, and the electrolyzed water generating unit 5 supplies the electrolyzed water to the electrolyzed water generating unit 5. Generated. Then, since the electrolyzed water is supplied to the air sterilization unit 4 disposed in the sterilization chamber 120, the air passing through the sterilization chamber 120 is sterilized by the air sterilization unit 4. The sterilized air can be widely distributed in the movie theater 100 of the building 200, and air sterilization and deodorization in the movie theater 100 which is this large space can be performed with a simple configuration.

  Furthermore, since the water storage tank 61 is provided on the roof of the building 200, the pipe length of the water supply path 52 connecting the water storage tank 61 and the electrolyzed water generating unit 5 can be shortened, so that the construction cost can be reduced. Effective use of the rooftop space can be achieved.

  In addition, according to the present embodiment, the drain 61 is provided at the discharge port 61A of the water storage tank 61, and the outlet 69A of the drain pipe 69 is directed to the drain groove 200A formed on the roof of the building 200. Since all the water discharged through the drainage pipe 69 flows into the drainage groove 200A, it is possible to prevent the multipurpose use on the roof of the building 200 from being hindered.

  In addition, according to the present embodiment, since the circulation path 63 for returning the water flowing down from the air sterilization unit 4 to the water storage tank 61 is provided, it is possible to efficiently remove air over a long period of time by effectively using a small amount of water. The amount of water used can be reduced and the running cost when operating the sterilization system 150 can be reduced as compared with the method in which the water received by the drain pan 44 can be discharged as it is by circulating water. Can be reduced.

  Further, according to the present embodiment, the rooftop type air conditioner 110 includes the sterilization chamber 120 that constitutes a part of the ventilation path in the rooftop type air conditioner 110, and the sterilization chamber 120 includes the sterilization chamber 120. Since the air sterilization unit 4 is arranged, the sterilization system 150 can be easily incorporated into the existing rooftop type air conditioner 110, and the air blown from the rooftop type air conditioner 110 to the movie theater 100 can be easily obtained. Can be sterilized.

  Moreover, according to this embodiment, the air sterilization part 4 is equipped with several gas-liquid contact member 41A1-41F2 arrange | positioned along with the up-down direction of the sterilization chamber 120 at least, and these gas-liquid contact members 41A1-41F2 are provided. Since the electrolyzed water is supplied from the electrolysis units 51A to 51F, the electrolyzed water can be supplied to the gas-liquid contact members 41A1 to 41F2 substantially evenly, and the air flowing through the sterilization chamber 120 can be sterilized efficiently. Can do.

As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to this. In the above-described embodiment, the configuration in which hypochlorous acid is generated as the active oxygen species has been described, but ozone (O ₃ ) or hydrogen peroxide (H ₂ O ₂ ) may be generated as the active oxygen species. In this case, for example, when a platinum tantalum electrode is used as an electrode, active oxygen species can be stably generated with high efficiency by electrolysis even from water having a small ion species.

  That is, by energizing between the electrodes 57A and 58A, reactions shown in the following formulas (6) to (8) occur in the anode electrode, and ozone is generated.

2H ₂ O → 4H ⁺ + O ₂ + 4e ⁻ (6)
3H ₂ O → O ₃ + 6H ⁺ + 6e ⁻ (7
2H ₂ O → O ₃ + 4H ⁺ + 4e ⁻ (8)
On the other hand, in the cathode electrode, the reactions shown in the following formulas (9) and (10) occur, and in this formula (10), O ₂ ⁻ generated by the electrode reaction and H ⁺ in the solution are combined to perform peroxidation. Hydrogen (H ₂ O ₂ ) is produced.

2H ₂ O + 2e ⁻ → H ₂ + 2OH ⁻ (9)
O ₂ ⁻ + e ⁻ + 2H ⁺ → H ₂ O ₂ (10)
In this configuration, when the electrodes 57A and 58A are energized, ozone and hydrogen peroxide having high sterilizing power are generated, and electrolyzed water containing these ozone and hydrogen peroxide can be produced. Then, by adjusting the concentration of ozone or hydrogen peroxide in the electrolyzed water to a concentration that inactivates the target virus and the like, by allowing air to pass through the gas-liquid contact members 41A1 and 41A2 supplied with the electrolyzed water of this concentration The target virus floating in the air can be inactivated. Also, gaseous substances such as odors are removed from the air by passing through the gas-liquid contact members 41A1 and 41A2 by dissolving in the electrolyzed water or reacting with ozone or hydrogen peroxide in the electrolyzed water. Therefore, it can deodorize.

  Further, in this configuration, the same reaction can be caused even when water with dilute ionic species (including pure water, purified water, well water, some tap water, etc.) is used. That is, when a halogen compound (salt etc.) is added to water with a dilute ionic species, a reaction similar to the above formulas (3) and (4) occurs, and active oxygen species can be obtained. That is, the sterilization system 150 is not limited to tap water to which chlorine compounds are sufficiently added, and even when other water is used, a sufficient air cleaning effect (inactivation of viruses, sterilization, deodorization, etc.) ).

  In this case, a chemical (halogen compound or the like) may be supplied to the water introduced into the electrolysis units 51A to 51F. For example, the medicine supply device that supplies the medicine may be provided in the water storage tank 61, and the medicine supply device may inject the medicine on the path from the water storage tank 61 to the electrolysis units 51A to 51F. And it is good also as a structure which inject | pours a chemical | medical agent directly to electrolysis unit 51A-51F.

  Here, salt or saline can be used as the drug. For example, if the concentration of saline in the electrolysis units 51A to 51F is adjusted to about 2 to 3% (weight percent), hypochlorous acid or hydrogen peroxide is obtained by electrolyzing the saline in the electrolysis units 51A to 51F. Electrolyzed water containing 0.5 to 1% can be generated. According to this configuration, even when the ionic species in the water introduced into the electrolysis units 51A to 51F are dilute, by adding salt or saline, the ionic species can be increased and high efficiency can be achieved during electrolysis of water. The active oxygen species can be generated stably.

  Moreover, in this embodiment, although it was set as the structure which has arrange | positioned gas-liquid contact members 41A1-41F2 in the ventilation path formed in the rooftop type air conditioning apparatus 110, it is not restricted to this, For example, the air conditioning apparatus 110 Of course, it may be arranged in the supply duct 105 that connects the air outlet 104 formed in the ceiling portion 103 of the movie theater 100.

  Further, in this embodiment, the water circulation method is used in which the water received by the drain pan 44 is returned to the water storage tank 61 through the circulation path 63, but the water received by the drain pan 44 may be discharged as it is. In this configuration, although the amount of water used is increased as compared with the water circulation system, it is not necessary to provide the circulation path 63, so that the equipment cost can be reduced.

It is sectional drawing which shows the state in which the rooftop type air conditioning apparatus concerning this embodiment was installed in the building. It is a figure which shows schematic structure of an air conditioning apparatus. It is a figure which shows the internal structure of an air conditioning apparatus. It is a figure which shows schematic structure of the sterilization system provided in the air conditioning apparatus. It is a perspective view which shows the structure of a gas-liquid contact member. It is a schematic diagram which shows the structure of an electrolysis unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat source side unit 2 Usage side unit 4 Air sanitization part 5 Electrolyzed water production | generation part 21 Usage side heat exchanger 22 Usage side air blower 41A1, 41A2, 41B1, 41B2, 41C1, 41C2, 41D1, 41D2, 41E1, 41E2, 41F1, 41F2 Gas-liquid contact member 44 Drain pan 51A, 51B, 51C, 51D, 51E, 51F Electrolysis unit 52, 52A, 52B, 52C, 52D, 52E, 52F Water supply path 61 Water storage tank (water tank)
61A Discharge port 63 Circulation path 65 Water supply pipe 69 Drain pipe 69A Exit 100 Movie theater (air-conditioned space)
120 Disinfection room (air flow path)
150 Sanitization system 200 Building (building)
200A drain

Claims (3)

  A sterilization system for taking outside air and guiding the taken-in air to the air-conditioned space through the air blowing path, an electrolyzed water generating unit that electrolyzes water to generate electrolyzed water, and the air blowing path A sterilization system comprising: an air sterilization unit that is disposed and sterilizes the air by bringing the electrolyzed water supplied from the electrolyzed water generation unit into contact with the air.   2. The sterilization system according to claim 1, wherein the electrolyzed water brought into contact with the air is dripped, then collected and again becomes electrolyzed water, and is led to the air sterilization unit again by operation of the pump, Sterilization system.   The sterilization system according to claim 2, further comprising a water supply pipe for supplying city water when the pre-electrolyzed water is insufficient.