WO2017022332A1 - Air purification apparatus and operation method - Google Patents

Air purification apparatus and operation method Download PDF

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Publication number
WO2017022332A1
WO2017022332A1 PCT/JP2016/067325 JP2016067325W WO2017022332A1 WO 2017022332 A1 WO2017022332 A1 WO 2017022332A1 JP 2016067325 W JP2016067325 W JP 2016067325W WO 2017022332 A1 WO2017022332 A1 WO 2017022332A1
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WO
WIPO (PCT)
Prior art keywords
solution
circulation tank
operation mode
preparation
circulation
Prior art date
Application number
PCT/JP2016/067325
Other languages
French (fr)
Japanese (ja)
Inventor
拓 相澤
誠記 永島
功 形川
倉持　克史
未来 高口
Original Assignee
株式会社クボタ
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社クボタ filed Critical 株式会社クボタ
Priority to CN201680002271.8A priority Critical patent/CN107847629A/en
Priority to CN202211189428.6A priority patent/CN115554450A/en
Publication of WO2017022332A1 publication Critical patent/WO2017022332A1/en

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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
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/117—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering
    • F24F8/133—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering by direct contact with liquid, e.g. with sprayed liquid
    • 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
    • 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
    • A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
    • A61L2101/02—Inorganic materials
    • A61L2101/06—Inorganic materials containing halogen
    • 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
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/21—Use of chemical compounds for treating air or the like
    • 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
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/21—Use of chemical compounds for treating air or the like
    • A61L2209/213—Use of electrochemically treated water, e.g. electrolysed water or water treated by electrical discharge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present invention relates to an air cleaning apparatus and a driving method having functions of sterilization, deodorization, dust removal and gas removal.
  • Patent Document 1 there is an air cleaning device described in Patent Document 1, for example.
  • the bactericide solution is sterilized by gas-liquid contact with bacteria in the air.
  • the sterilization target air flows from the upstream side to the downstream side in the ventilation path of the housing.
  • the sterilizing agent solution is sprayed to the sterilization target air flowing through the air passage by the spraying device, the germicidal solution descending from the air passage is received by the circulation tank, and the germicidal solution in the circulation tank is supplied to the spraying device.
  • a slightly acidic electrolyzed water is supplied from the drug supply device to the circulation system of the bactericide solution formed by the circulation tank, the circulation system, the spray device, and the air passage as a stock solution of the bactericide solution, and sterilized from the dilution water system.
  • Supply dilution water to dilute the agent solution.
  • the thing of patent document 2 sprays the slightly acidic electrolyzed water as a disinfectant solution to the housing which has the ventilation path through which the sterilization object air flows from the upstream side to the downstream side, and the sterilization object air flowing through the ventilation path.
  • the medicine supply device has an external extraction part for extracting the slightly acidic electrolyzed water out of the housing.
  • the drug supply device supplies dilution water to the circulation tank while supplying the slightly acidic electrolyzed water from the relay tank to the circulation tank at a small flow rate.
  • the effective chlorine concentration is maintained at the set concentration of 0.1-10 mg / L, and the medicinal effect is maintained.
  • the foreign matter transferred from the air to be sterilized into the bactericide solution is overflowed with the surplus of the bactericide solution at any time and discharged from the circulation tank.
  • the cleanliness of the disinfectant solution in the circulation tank is maintained.
  • a pump is required to discharge the sterilizing agent solution containing the overflowing foreign matter to the outside of the system, but since the overflow is a small flow rate, it is not realistic to keep the pump continuously driven to discharge. For this reason, it is necessary to temporarily store the overflowed bactericidal solution in the discharge tank before transferring it out of the system, and transfer it with a pump in a timely manner, resulting in a problem that the apparatus configuration becomes complicated and large.
  • the circulation tank needs to be subjected to electrolytic water cleaning, that is, chemical cleaning, by filling the tank with only slightly acidic electrolyzed water having a concentration at the time of production at least once a day.
  • electrolytic water cleaning that is, chemical cleaning
  • the slightly acidic electrolyzed water is supplied to the circulation tank through a relay tank with a small flow rate pump. It took a long time to fill with, and during that time it was necessary to stop the operation for air purification for a long time.
  • the present invention solves the above-described problems, and provides an air cleaning apparatus and an operation method capable of simplifying the apparatus configuration by eliminating a drain tank and performing chemical cleaning in a short time.
  • an air cleaning device of the present invention includes a housing having a purification ventilation path in which sterilization target air flows from the upstream side to the downstream side, and a sterilizing agent in the sterilization target air flowing in the purification ventilation path.
  • a spray device for spraying the solution a circulation tank for receiving the bactericide solution descending from the purification air passage, a circulation system for supplying the bactericide solution in the circulation tank to the spray device, and the bactericide solution in the circulation tank to the outside of the system
  • a discharge system for discharging a chemical supply system for supplying a sterilizing agent solution to the circulation tank, a diluting water supply system for supplying diluting water for diluting the sterilizing agent solution, and a control device are provided.
  • the control device repeats batch operation with one cycle of the normal operation mode and the preparation operation mode as a normal operation In mode, it is stored in the circulation tank While circulating the bactericidal solution between the circulation system, the spray device, the purification vent, and the circulation tank, the bactericide solution is supplied from the replenishment supply section to the circulation tank at a small flow rate for replenishment, and the concentration of the bactericide solution is set.
  • the preparation operation mode the old bactericidal solution in the circulation tank is discharged out of the system from the discharge system, the bactericide solution is supplied from the preparation supply unit at a large flow rate for preparation, and from the dilution water supply system. It is characterized by supplying dilution water and preparing a new disinfectant solution having a predetermined concentration in a circulation tank.
  • the control device has a cleaning operation mode that is performed after performing a cycle of the normal operation mode and the preparation operation mode a plurality of times.
  • the cleaning operation mode the old disinfectant solution in the circulation tank Is discharged from the discharge system to the outside of the system, the bactericide solution is supplied from the preparation supply unit to the circulation tank, and the circulation tank is filled with a predetermined amount of the bactericide solution, and the circulation tank is cleaned with chemicals.
  • the operation method of the air cleaning device of the present invention supplies the sterilizing agent solution stored in the circulation tank to the spraying device through the circulation system, and the sterilizing agent from the spraying device to the sterilization target air flowing through the purification air passage.
  • Spraying the solution receiving the bactericide solution descending from the purification air passage in the circulation tank and circulating the bactericide solution, supplying the bactericide solution from the replenishment supply unit to the circulation tank at a small flow rate for replenishment Maintain the set concentration of the agent solution, and in the preparation operation mode, discharge the old fungicide solution in the circulation tank out of the discharge system from the discharge system, supply the fungicide solution from the preparation supply unit at a large flow rate for preparation, It is characterized by supplying dilution water from a dilution water supply system, preparing a new disinfectant solution having a set concentration in a circulation tank in batches, and repeatedly performing a batch operation in which the normal operation mode and the preparation operation mode are one cycle. You .
  • the cleaning operation mode is performed after the cycle of the normal operation mode and the preparation operation mode is performed a plurality of times.
  • the old disinfectant solution in the circulation tank is discharged.
  • the sterilizing agent solution is discharged from the system to the outside, supplied with a bactericide solution from the preparation supply unit to the circulation tank, filled with a predetermined amount of the bactericide solution in the circulation tank, and washed with chemicals.
  • the batch operation in which the normal operation mode and the preparation operation mode are set to one cycle is repeated, and in the normal operation mode, the disinfectant solution is maintained at the set concentration and the medicinal effect is maintained.
  • Bacteria that have migrated from the target air into the bactericide solution are sterilized, and foreign matter is retained in the circulation tank.
  • the preparation operation mode the old sterilizing agent solution is discharged together with the foreign matter, and the sterilizing agent solution in the circulation tank is updated to restore the cleanliness. Therefore, the overflow resulting from the continuous supply of the bactericide solution and the dilution water as in the prior art does not occur, and a drainage tank for temporary storage becomes unnecessary.
  • a pump can be drive
  • the bactericide solution is supplied from the preparation supply unit at a large flow rate for preparation, and the dilution water is supplied from the dilution water supply system and set in the circulation tank. Since a new bactericidal solution having a new concentration is prepared in batches, the bactericidal solution can be renewed in a short time.
  • the circulation tank is filled with a predetermined amount of the bactericide solution in a short period of time. Can be washed.
  • the front view which shows the typical structure of the air purifying apparatus in embodiment of this invention.
  • Side view showing a schematic configuration of the air purifier
  • the principal part enlarged view which shows the schematic structure of the air conditioner
  • Perspective view showing the air purifier
  • the schematic diagram which shows the principal part of the air purifying apparatus in other embodiment of this invention.
  • the enlarged view which shows the relay tank of the air purifying apparatus in the embodiment
  • the air purifier includes a door body 501 on the front surface of the housing 500, and has an intake port 502 at a lower position and an air supply port 503 at an upper position.
  • a purification air passage 52 is formed in which the sterilization target air 51 flows from the upstream intake port 502 to the downstream air supply port 503.
  • the first dustproof net 504 In the middle of the purification air passage 52 of the housing 500, the first dustproof net 504, the medium performance filter 505, the medium 506, the spray device 53, and the eliminator are sequentially arranged from the upstream side to the downstream side in the flow direction of the sterilization target air 51. 507, a fan device 600, and a second dustproof net 508 are provided.
  • the first dustproof net 504, the medium performance filter 505, and the medium 506 are attached to a wind tunnel 509 that forms a gas-liquid contact area of the purification air passage 52.
  • the medium 506 is disposed in the wind tunnel 509 so as to be inclined obliquely downward from the air inlet 502 side toward the inner side of the housing 500, and this inclined arrangement suppresses the height required for the arrangement of the medium 506. .
  • the spraying device 53 sprays a bactericide solution of slightly acidic electrolyzed water along the medium 506 to the sterilization target air flowing through the purification air passage 52, and includes a plurality of spray nozzles 531.
  • the spray nozzle 531 may be disposed obliquely downward, may be disposed upward, or the spray device 53 may be disposed at a position facing the medium 506.
  • slightly acidic electrolyzed water is an aqueous solution whose main active ingredient is hypochlorous acid (HCLO), pH 5.0-6.5, and effective chlorine concentration 10-80 mg / kg.
  • HCLO hypochlorous acid
  • the medium performance filter 505 captures fine particles and removes them from the air stream.
  • the medium 506 holds the sprayed water sprayed from the spraying device 53 and promotes gas-liquid contact between the sterilization target air and the bactericide solution.
  • the media 506 is formed by matting polyvinylidene chloride fibers. It is.
  • the eliminator 507 captures water droplets and mist and removes them from the air stream, and is disposed above the wind tunnel 509 in which the medium 506 is disposed.
  • a pan 510 for receiving the bactericide solution descending from the wind tunnel 509 is disposed below the wind tunnel 509.
  • the eliminator 507, the medium 506, the wind tunnel 509, and the pan 510 can be detached from the housing 500 during maintenance. Desorption is performed from the front side of the wind tunnel 509. Further, the spray state of the bactericide solution can be confirmed by lifting the eliminator 507 during operation.
  • a circulation tank 54 is provided below the pan 510.
  • the circulation tank 54 receives and stores the bactericide solution descending from the purification vent 52 and the bactericide solution flowing from the pan 510.
  • a relay tank 541 is provided inside the circulation tank 54, and a descending liquid guide plate 542 is provided to cover the relay tank 541.
  • a circulation system 55 is disposed between the circulation tank 54 and the spraying device 53, and the circulation system 55 supplies the disinfectant solution in the circulation tank 54 to the spraying device 53 by a circulation pump 550.
  • a circulation pump 550 that serves both for spraying and discharging the bactericide solution is located below the circulation tank 54, and a three-way switching valve 551 and a check valve 552 are interposed on the downstream side of the circulation pump 550.
  • a drainage system 567 branches from the three-way switching valve 551. By switching the three-way switching valve 551, it is possible to circulate and discharge the bactericide solution by using one circulation pump 550.
  • the check valve 552 prevents backflow of the bactericide solution in the circulation system 55. Therefore, if the spray nozzle 531 of the spray device 53 is arranged facing upward, the circulation pump 550 is circulated when the circulation pump 550 is stopped. The inside of the system 55 is filled with the bactericide solution, and no abnormal noise due to air discharge occurs when the circulation pump 550 is restarted.
  • the chemical supply system 56 supplies a slightly acidic electrolyzed water having a concentration at the time of generation as a bactericide solution, a generating device 561 that generates the slightly acidic electrolyzed water, and a water supply system 562 that supplies the generating device 561 with water.
  • the diluting water supply system 563 that branches from the water supply system 562 and supplies the diluting water to the circulation tank 54, the relay tank 541 described above, and the slightly acidic electrolyzed water from the generating device 561 through the relay tank 541 and the relay tank 541
  • a preparation supply unit 564 that supplies the recirculation tank 54 to the circulation tank 54 at a large flow rate for preparation, and a relay pump 565 that drops and supplies slightly acidic electrolyzed water from the relay tank 541 to the circulation tank 54 at a small replenishment flow rate.
  • a replenishment supply unit 566 is provided.
  • the relay tank 541 has a bottom surface that inclines downward from the one side edge 541a corresponding to the opening 564a of the preparation supply unit 564 toward the other side edge 541b, and then inclines upward through the bottom 541c.
  • the other side edge 541b is at a lower position than the one side edge 541a, forms an overflow edge, and the supply part 566 for supply is connected to the lowest part 541c.
  • the relay tank 541 is disposed inside the circulation tank 54, but may be disposed outside the circulation tank 54. However, if the relay tank 541 is disposed outside the circulation tank 54, it is necessary to separately provide a waterproof pan or the like for preventing water leakage. By disposing the relay tank 541 inside the circulation tank 54 as in the present embodiment, a component member for countermeasures against water leakage becomes unnecessary.
  • the dispensing supply portion 564 is provided with a three-way switching valve 564b, and an external extraction portion 564c branches from the three-way switching valve 564b.
  • a water supply port 564d of the external extraction portion 564c is provided on the side of the housing 500. is there.
  • a lower limit liquid level meter 54a, a middle level liquid level meter 54b, and an upper limit liquid level meter 54c are provided at positions corresponding to the respective set liquid levels.
  • a control device 700 is provided on the front surface of the door body 501 to take charge of the operation of the air purifier.
  • the control device 700 has functional circuits responsible for the normal operation mode, the preparation operation mode, and the cleaning operation mode, and repeats the batch operation in which the normal operation mode and the preparation operation mode are one cycle, and the normal operation mode and the preparation operation are repeated. After the cycle with the mode is performed a plurality of times, the cleaning operation mode is performed.
  • the normal operation mode is about 20-40 minutes
  • the preparation operation mode is about 65 seconds including the drainage time
  • the cleaning operation mode is performed at a frequency of once or more per day.
  • the medicine supply device 56 supplies the slightly acidic electrolyzed water dropwise by the relay pump 565 from the relay tank 541 to the circulation tank 54 via the supply section 566 for supply, for example, 0.05 L / min. . Then, the effective chlorine concentration of the sterilizing agent solution in the circulation tank 54 is maintained at 0.1-10 mg / L, and the sterilizing agent solution in the circulation tank 54 is maintained at a dilution concentration suitable for sterilization.
  • the bactericide solution in the circulation tank 54 is supplied to the spray device 53 by the circulation pump 550.
  • the spraying device 53 sprays the sterilizing agent solution whose concentration is adjusted in the circulation tank 54 from the spray nozzle 531 to the sterilization target air 51 flowing from the upstream side to the downstream side through the purification air passage 52 of the housing 500.
  • Dilution water is supplied from the dilution water supply system 563 as necessary.
  • the sterilization target air 51 is trapped by trapping foreign substances such as airborne bacteria and dust colliding with the spray water of the bactericide solution and sterilizing. Furthermore, the spray water of the bactericide solution that has reached the medium 506 causes the floating bacteria and dust attached to the medium 506 to flow down, and takes in foreign matters such as the floating bacteria and dust contained in the sterilization target air 51, and the circulation tank 54. Flows in.
  • the circulation tank 54 In the circulation tank 54, a slightly acidic electrolyzed water is dropped at a small flow rate for replenishment, so that the effective chlorine concentration of the bactericide solution in the tank of the circulation tank 54 is a dilution concentration suitable for sterilization of 0.1-10 mg / L. Is maintained. For this reason, the bacteria flowing into the circulation tank 54 can be surely sterilized. Further, by spraying the bactericide solution directly on the sterilization target air 51 with high saturation efficiency, foreign substances such as floating bacteria and dust contained in the sterilization target air 51 can be taken into the bactericide solution, In addition to sterilization, dust removal can also be realized.
  • the sterilized air that has passed through the medium 506 passes through the eliminator 507 and is supplied into the room by the fan device 600.
  • the three-way switching valve 551 is operated to discharge the old disinfectant solution in the circulation tank 54 from the discharge system 567 to the outside by the circulation pump, and lower the liquid level in the circulation tank 54 to the lower set level of the lower limit liquid level meter 54a. .
  • the chemical supply system 56 supplies water from the water supply system 562 to the generating device 561, and the generating device 561 electrolyzes an electrolyzed solution of 2-21% hydrochloric acid to generate slightly acidic electrolyzed water, which is slightly acidic at the concentration at the time of generation.
  • Electrolyzed water is supplied as a bactericide solution through the preparation supply unit 564 to the relay tank 541 at a large flow rate for preparation, for example, 5 L / min.
  • the bactericide solution flowing into the relay tank 541 from the opening 564a of the preparation supply unit 564 flows from the one side edge 541a toward the other side edge 541b, and the other side while washing away foreign substances derived from tap water remaining in the relay tank 541. It overflows from the edge 541b and is supplied to the circulation tank 54.
  • dilution water is supplied from the dilution water supply system 563 to the circulation tank 54 at, for example, 6 L / min.
  • the bactericide solution is prepared in batches, and the bactericide solution is stored in the circulation tank 54 to the upper set level of the upper limit liquid level meter 54c.
  • the bactericide solution is supplied from the preparation supply unit 564 at a large flow rate for preparation, and the dilution water is supplied from the dilution water supply system 563, so that the bactericide solution can be updated in a short time. It can be performed.
  • the foreign matter transferred from the sterilization target air into the bactericide solution is retained in the circulation tank while maintaining the medicinal effect by keeping the bactericide solution at a set concentration.
  • the old sterilizing agent solution is discharged together with the foreign matter, and the sterilizing agent solution in the circulation tank is updated to restore the cleanliness. For this reason, there is no overflow due to continuous supply of the bactericidal solution and dilution water as in the prior art, and a drainage tank for temporary storage becomes unnecessary, and the old bactericidal solution inside the circulation tank 54 By discharging the entire amount at once, the pump can be operated with high operating efficiency.
  • the cleaning operation mode In the cleaning operation mode, the three-way switching valve 551 is operated, the old bactericide solution in the circulation tank 54 is discharged from the discharge system 567 to the outside by the circulation pump, and the bactericide solution is supplied from the preparation supply unit 564 to the circulation tank 54. Then, the circulation tank 54 is filled with a predetermined amount of the bactericidal agent solution, and the circulation tank 54 is cleaned with chemicals.
  • the bactericidal solution is supplied from the preparation supply unit 564 to the circulation tank 54 at a large flow rate for preparation, so that a predetermined amount of the bactericide solution is filled in the circulation tank 54 and circulated in a short time.
  • the tank 54 can be cleaned with chemicals.
  • the slightly acidic electrolyzed water is taken out from the air cleaning device, the three-way switching valve 564b is operated, the dispensing supply unit 564 is connected to the external takeout unit 564c, and the slightly acidic electrolyzed water is taken out from the water supply port 564d.
  • the bactericide solution is caused to flow into the circulation tank 54 from the other side edge 541 b that forms the overflow port of the relay tank 541. It is also possible to adopt the following configuration instead of this configuration.
  • the overflow pipe 591 is disposed through the bottom of the relay tank 541, the upper end opening 591 a of the overflow pipe 591 is opened near the water surface of the relay tank 541, and is used as an overflow port,
  • the lower end opening 591b is opened below the lower set level of the circulation tank 54.
  • the opening 564e of the supply part 564 for dispensing is arrange
  • the sterilizer solution in the relay tank 541 flows down to the circulation tank 54 through the overflow pipe 591. Then it flows below the surface of the lower set level. For this reason, the disinfectant solution does not hit the water surface inside the circulation tank 54, and the generation of the water noise of the impact can be prevented.
  • the bactericidal solution flowing down from the dispensing supply unit 564 to the relay tank 541 flows out below the water surface of the relay tank 541, the bactericidal solution does not hit the water surface of the relay tank 541, and the water noise of the impact is reduced. Occurrence can be prevented.
  • the opening 564e of the dispensing supply unit 564 opens toward the bottom in the vicinity of the bottom of the relay tank 541 so that the content derived from the supply water staying at the bottom of the relay tank 541 is ejected from the 0 opening 564e. Rolled up with solution. For this reason, the content derived from the supply water is discharged together with the bactericide solution to the circulation tank 54 through the overflow pipe 591, and the relay tank 541 can be cleaned every time the preparation operation mode and the cleaning operation mode are performed. (Embodiment 3) When the relay tank 541 is disposed outside the circulation tank 54, the other side edge 541 b that is an overflow edge is disposed inside the circulation tank 54.
  • slightly acidic electrolyzed water having a production concentration is supplied as a bactericide solution to the relay tank 541 through the preparation supply unit 564 at a large flow rate for preparation.
  • the slightly acidic electrolyzed water is dropped and supplied from the relay tank 541 to the circulation tank 54 via the supply unit 566 by the relay pump 565 at a small flow rate for replenishment. Maintain the chlorine concentration at 0.1-10 mg / L.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Separation Of Particles Using Liquids (AREA)

Abstract

In the present invention, a chemical feed system 56 comprises two feed units, a feed unit 564 for preparation and a feed unit 566 for make-up feed, which feed a disinfectant solution to a circulation tank 54. A control device 700 performs repeated cycles of a batch operation with each cycle consisting of a normal operation mode and a preparation operation mode. In the normal operation mode, the disinfectant solution is fed from the feed unit 566 for make-up feed to the circulation tank 54 at a low make-up feed flow rate to maintain a set concentration of the disinfectant solution while circulating the disinfectant solution stored in the circulation tank 54 between a circulation system 55, a spray device 53, a ventilation channel 52 for purification and the circulation tank 54. In the preparation operation mode, the old disinfectant solution in the circulation tank 54 is discharged through a discharge system 567 to the outside and fresh disinfectant solution having the set concentration is prepared in batches in the circulation tank 54 by feeding the disinfectant solution at a high preparation flow rate from the feed unit 564 for preparation while feeding dilution water from a dilution water feed system 563.

Description

空気清浄装置および運転方法Air cleaning device and operation method
　本発明は、除菌、消臭、除塵、ガス除去の機能を備える空気清浄装置および運転方法に関するものである。 The present invention relates to an air cleaning apparatus and a driving method having functions of sterilization, deodorization, dust removal and gas removal.
　従来、空気清浄装置には、例えば特許文献１に記載するものがある。これは、殺菌剤溶液が空気中において菌と気液接触して殺菌を行なうものである。ここでは、ハウジングの通気路において除菌対象空気が上流側から下流側に流れる。この通気路を流れる除菌対象空気に噴霧装置によって殺菌剤溶液を噴霧し、通気路から降下する殺菌剤溶液を循環槽で受け止め、循環槽の殺菌剤溶液を噴霧装置に供給する。そして、循環槽と循環系と噴霧装置と通気路とで形成される殺菌剤溶液の巡廻系に、薬剤供給装置から殺菌剤用液の原液として微酸性電解水を供給し、希釈水系から殺菌剤溶液を希釈する希釈用水を供給する。 Conventionally, there is an air cleaning device described in Patent Document 1, for example. In this method, the bactericide solution is sterilized by gas-liquid contact with bacteria in the air. Here, the sterilization target air flows from the upstream side to the downstream side in the ventilation path of the housing. The sterilizing agent solution is sprayed to the sterilization target air flowing through the air passage by the spraying device, the germicidal solution descending from the air passage is received by the circulation tank, and the germicidal solution in the circulation tank is supplied to the spraying device. Then, a slightly acidic electrolyzed water is supplied from the drug supply device to the circulation system of the bactericide solution formed by the circulation tank, the circulation system, the spray device, and the air passage as a stock solution of the bactericide solution, and sterilized from the dilution water system. Supply dilution water to dilute the agent solution.
　また、特許文献２のものは、除菌対象空気が上流側から下流側に流れる通気路を有するハウジングと、前記通気路を流れる除菌対象空気に殺菌剤溶液としての微酸性電解水を噴霧する噴霧装置と、前記通気路から降下する殺菌剤溶液を受け止める循環槽と、循環槽の微酸性電解水を噴霧装置に供給する循環系と、循環槽に微酸性電解水を供給する薬剤供給装置とを備え、薬剤供給装置は、ハウジングの外へ微酸性電解水を取り出す外部取出部を有している。 Moreover, the thing of patent document 2 sprays the slightly acidic electrolyzed water as a disinfectant solution to the housing which has the ventilation path through which the sterilization object air flows from the upstream side to the downstream side, and the sterilization object air flowing through the ventilation path. A spraying device, a circulation tank for receiving the bactericide solution descending from the air passage, a circulation system for supplying the acidic water in the circulation tank to the spraying device, and a drug supply device for supplying the slightly acidic electrolytic water to the circulation tank And the medicine supply device has an external extraction part for extracting the slightly acidic electrolyzed water out of the housing.
特開２０１３－２２６３７３JP 2013-226373 A 特開２０１５－７８７８５JP2015-78785
　上記した特許文献１、２において、薬剤供給装置は、中継槽から循環槽へ微酸性電解水を小流量で供給しつつ、希釈用水を循環槽に供給するものであり、循環槽の殺菌剤溶液の有効塩素濃度を設定濃度の０．１－１０ｍｇ／Ｌに維持し、薬効を保っている。 In Patent Documents 1 and 2 described above, the drug supply device supplies dilution water to the circulation tank while supplying the slightly acidic electrolyzed water from the relay tank to the circulation tank at a small flow rate. The effective chlorine concentration is maintained at the set concentration of 0.1-10 mg / L, and the medicinal effect is maintained.
　そして、循環槽に殺菌剤溶液と希釈用水を連続的に供給しつつ、除菌対象空気から殺菌剤溶液中に移行した異物を殺菌剤溶液の余剰分とともに随時にオーバーフローさせて循環槽から排出し、循環槽内の殺菌剤溶液の清浄性を維持している。 Then, while continuously supplying the bactericide solution and dilution water to the circulation tank, the foreign matter transferred from the air to be sterilized into the bactericide solution is overflowed with the surplus of the bactericide solution at any time and discharged from the circulation tank. The cleanliness of the disinfectant solution in the circulation tank is maintained.
　このオーバーフローした異物を含む殺菌剤溶液を系外へ排出するにはポンプが必要であが、オーバーフローは小流量であるので、ポンプを常時駆動して排出し続けることは現実的ではない。このため、オーバーフローした殺菌剤溶液は系外に排出する前に排出槽に一旦貯溜して適時にポンプで移送する必要があり、装置構成が複雑化、大型化する問題があった。 A pump is required to discharge the sterilizing agent solution containing the overflowing foreign matter to the outside of the system, but since the overflow is a small flow rate, it is not realistic to keep the pump continuously driven to discharge. For this reason, it is necessary to temporarily store the overflowed bactericidal solution in the discharge tank before transferring it out of the system, and transfer it with a pump in a timely manner, resulting in a problem that the apparatus configuration becomes complicated and large.
　また、循環槽は、一日一回以上の頻度で、生成時濃度の原液の微酸性電解水だけを槽内に満たして電解水洗浄、つまり薬剤洗浄を行う必要がある。しかし、循環槽に原液の微酸性電解水を直接的に供給する流路はなく、中継槽を経て小流量のポンプで微酸性電解水を循環槽に供給するので、循環槽を微酸性電解水で満たすのに長時間を要し、その間は空気浄化のための運転を長く休止する必要があった。 In addition, the circulation tank needs to be subjected to electrolytic water cleaning, that is, chemical cleaning, by filling the tank with only slightly acidic electrolyzed water having a concentration at the time of production at least once a day. However, there is no flow path for directly supplying the slightly acidic electrolyzed water of the stock solution to the circulation tank, and the slightly acidic electrolyzed water is supplied to the circulation tank through a relay tank with a small flow rate pump. It took a long time to fill with, and during that time it was necessary to stop the operation for air purification for a long time.
　本発明は上記した課題を解決するものであり、排水槽をなくして装置構成の簡素化を図るとともに、薬剤洗浄を短時間で実施することができる空気清浄装置および運転方法を提供する。 The present invention solves the above-described problems, and provides an air cleaning apparatus and an operation method capable of simplifying the apparatus configuration by eliminating a drain tank and performing chemical cleaning in a short time.
　上記課題を解決するために、本発明の空気清浄装置は、除菌対象空気が上流側から下流側に流れる浄化用通気路を有するハウジングと、浄化用通気路を流れる除菌対象空気に殺菌剤溶液を噴霧する噴霧装置と、浄化用通気路から降下する殺菌剤溶液を受け止める循環槽と、循環槽の殺菌剤溶液を噴霧装置に供給する循環系と、循環槽の殺菌剤溶液を系外へ排出する排出系と、循環槽に殺菌剤溶液を供給する薬剤供給系と、殺菌剤溶液を希釈する希釈用水を供給する希釈用水供給系と、制御装置を備え、薬剤供給系は、殺菌剤溶液を循環槽へ供給する調製用供給部と補給用供給部の２つの供給部を有し、制御装置は、通常運転モードと調製運転モードとを１サイクルとするバッチ運転を繰り返し実施し、通常運転モードでは、循環槽に貯溜した殺菌剤溶液を循環系、噴霧装置、浄化用通気路、循環槽の間で循環させつつ、補給用供給部から殺菌剤溶液を補給用小流量で循環槽に供給して殺菌剤溶液の設定濃度を維持し、調製運転モードでは、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を調製用大流量で供給するとともに、希釈用水供給系から希釈用水を供給して循環槽内に設定濃度の新しい殺菌剤溶液を回分調製することを特徴とする。 In order to solve the above-described problems, an air cleaning device of the present invention includes a housing having a purification ventilation path in which sterilization target air flows from the upstream side to the downstream side, and a sterilizing agent in the sterilization target air flowing in the purification ventilation path. A spray device for spraying the solution, a circulation tank for receiving the bactericide solution descending from the purification air passage, a circulation system for supplying the bactericide solution in the circulation tank to the spray device, and the bactericide solution in the circulation tank to the outside of the system A discharge system for discharging, a chemical supply system for supplying a sterilizing agent solution to the circulation tank, a diluting water supply system for supplying diluting water for diluting the sterilizing agent solution, and a control device are provided. The control device repeats batch operation with one cycle of the normal operation mode and the preparation operation mode as a normal operation In mode, it is stored in the circulation tank While circulating the bactericidal solution between the circulation system, the spray device, the purification vent, and the circulation tank, the bactericide solution is supplied from the replenishment supply section to the circulation tank at a small flow rate for replenishment, and the concentration of the bactericide solution is set. In the preparation operation mode, the old bactericidal solution in the circulation tank is discharged out of the system from the discharge system, the bactericide solution is supplied from the preparation supply unit at a large flow rate for preparation, and from the dilution water supply system. It is characterized by supplying dilution water and preparing a new disinfectant solution having a predetermined concentration in a circulation tank.
　本発明の空気清浄装置において、制御装置は、通常運転モードと調製運転モードとのサイクルを複数回行った後に実施する洗浄運転モードを有し、洗浄運転モードでは、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を循環槽に供給し、循環槽内に所定量の殺菌剤溶液を満たして循環槽を薬剤洗浄することを特徴とする。 In the air cleaning device of the present invention, the control device has a cleaning operation mode that is performed after performing a cycle of the normal operation mode and the preparation operation mode a plurality of times. In the cleaning operation mode, the old disinfectant solution in the circulation tank Is discharged from the discharge system to the outside of the system, the bactericide solution is supplied from the preparation supply unit to the circulation tank, and the circulation tank is filled with a predetermined amount of the bactericide solution, and the circulation tank is cleaned with chemicals.
　本発明の空気清浄装置の運転方法は、通常運転モードにおいて、循環槽に貯溜した殺菌剤溶液を循環系を通して噴霧装置に供給し、浄化用通気路を流れる除菌対象空気に噴霧装置から殺菌剤溶液を噴霧し、浄化用通気路から降下する殺菌剤溶液を循環槽で受け止めて殺菌剤溶液を循環させつつ、補給用供給部から殺菌剤溶液を補給用小流量で循環槽に供給して殺菌剤溶液の設定濃度を維持し、調製運転モードにおいて、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を調製用大流量で供給するとともに、希釈用水供給系から希釈用水を供給して循環槽内に設定濃度の新しい殺菌剤溶液を回分調製し、通常運転モードと調製運転モードとを１サイクルとするバッチ運転を繰り返し実施することを特徴とする。 In the normal operation mode, the operation method of the air cleaning device of the present invention supplies the sterilizing agent solution stored in the circulation tank to the spraying device through the circulation system, and the sterilizing agent from the spraying device to the sterilization target air flowing through the purification air passage. Spraying the solution, receiving the bactericide solution descending from the purification air passage in the circulation tank and circulating the bactericide solution, supplying the bactericide solution from the replenishment supply unit to the circulation tank at a small flow rate for replenishment Maintain the set concentration of the agent solution, and in the preparation operation mode, discharge the old fungicide solution in the circulation tank out of the discharge system from the discharge system, supply the fungicide solution from the preparation supply unit at a large flow rate for preparation, It is characterized by supplying dilution water from a dilution water supply system, preparing a new disinfectant solution having a set concentration in a circulation tank in batches, and repeatedly performing a batch operation in which the normal operation mode and the preparation operation mode are one cycle. You .
　本発明の空気清浄装置の運転方法において、通常運転モードと調製運転モードとのサイクルを複数回行った後に洗浄運転モードを実施し、洗浄運転モードでは、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を循環槽に供給し、循環槽内に所定量の殺菌剤溶液を満たして循環槽を薬剤洗浄することを特徴とする。 In the operation method of the air purifying apparatus of the present invention, the cleaning operation mode is performed after the cycle of the normal operation mode and the preparation operation mode is performed a plurality of times. In the cleaning operation mode, the old disinfectant solution in the circulation tank is discharged. The sterilizing agent solution is discharged from the system to the outside, supplied with a bactericide solution from the preparation supply unit to the circulation tank, filled with a predetermined amount of the bactericide solution in the circulation tank, and washed with chemicals.
　以上のように本発明によれば、通常運転モードと調製運転モードとを１サイクルとするバッチ運転を繰り返し、通常運転モードにおいては、殺菌剤溶液を設定濃度に保って薬効を維持しつつ、除菌対象空気から殺菌剤溶液中に移行した菌を除菌し、異物を循環槽内に滞留させる。そして、調製運転モードにおいて、異物とともに古い殺菌剤溶液を排出し、循環槽内の殺菌剤溶液を更新して清浄性を回復させる。よって、従来のような殺菌剤溶液と希釈用水を連続的に供給することに因るオーバーフローが生じず、一時貯溜のための排水槽が不要となる。そして、循環槽内の古い殺菌剤溶液の全量を一度に排出することで、高い稼働効率でポンプを運転できる。 As described above, according to the present invention, the batch operation in which the normal operation mode and the preparation operation mode are set to one cycle is repeated, and in the normal operation mode, the disinfectant solution is maintained at the set concentration and the medicinal effect is maintained. Bacteria that have migrated from the target air into the bactericide solution are sterilized, and foreign matter is retained in the circulation tank. Then, in the preparation operation mode, the old sterilizing agent solution is discharged together with the foreign matter, and the sterilizing agent solution in the circulation tank is updated to restore the cleanliness. Therefore, the overflow resulting from the continuous supply of the bactericide solution and the dilution water as in the prior art does not occur, and a drainage tank for temporary storage becomes unnecessary. And a pump can be drive | operated with high operation efficiency by discharging | emitting the whole quantity of the old germicide solution in a circulation tank at once.
　また、調製運転モードにおいて殺菌剤溶液を調製する際には、調製用供給部から殺菌剤溶液を調製用大流量で供給するとともに、希釈用水供給系から希釈用水を供給して循環槽内に設定濃度の新しい殺菌剤溶液を回分調製するので、短時間に殺菌剤溶液の更新を行うことができる。 Also, when preparing the bactericide solution in the preparation operation mode, the bactericide solution is supplied from the preparation supply unit at a large flow rate for preparation, and the dilution water is supplied from the dilution water supply system and set in the circulation tank. Since a new bactericidal solution having a new concentration is prepared in batches, the bactericidal solution can be renewed in a short time.
　さらに、洗浄運転モードにおいても、調製用供給部から殺菌剤溶液を調製用大流量で循環槽に供給することで、循環槽内に所定量の殺菌剤溶液を短時間に満たして循環槽を薬剤洗浄することができる。 Furthermore, even in the cleaning operation mode, by supplying a bactericide solution from the preparation supply unit to the circulation tank at a large flow rate for preparation, the circulation tank is filled with a predetermined amount of the bactericide solution in a short period of time. Can be washed.
本発明の実施の形態における空気清浄装置の模式的構成を示す正面図The front view which shows the typical structure of the air purifying apparatus in embodiment of this invention. 同空気清浄装置の模式的構成を示す側面図Side view showing a schematic configuration of the air purifier 同空気調和機の模式的構成を示す要部拡大図The principal part enlarged view which shows the schematic structure of the air conditioner 同空気清浄装置を示す斜視図Perspective view showing the air purifier 本発明の他の実施の形態における空気清浄装置の要部を示す模式図The schematic diagram which shows the principal part of the air purifying apparatus in other embodiment of this invention. 同実施の形態における空気清浄装置の中継槽を示す拡大図The enlarged view which shows the relay tank of the air purifying apparatus in the embodiment
　以下、本発明の実施の形態を図面に基づいて説明する。
（実施の形態１）
　図１および図４に示すように、空気清浄装置は、ハウジング５００の前面の扉体５０１に下方位置の吸気口５０２と上方位置の送気口５０３とを有しており、ハウジング５００の内部に除菌対象空気５１が上流側の吸気口５０２から下流側の送気口５０３に流れる浄化用通気路５２を形成している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
As shown in FIG. 1 and FIG. 4, the air purifier includes a door body 501 on the front surface of the housing 500, and has an intake port 502 at a lower position and an air supply port 503 at an upper position. A purification air passage 52 is formed in which the sterilization target air 51 flows from the upstream intake port 502 to the downstream air supply port 503.
　ハウジング５００の浄化用通気路５２の途中には、除菌対象空気５１の流れ方向において上流側から下流側へ順次に、第１防塵ネット５０４、中性能フィルター５０５、メディア５０６、噴霧装置５３、エリミネータ５０７、ファン装置６００、第２防塵ネット５０８を設けている。 In the middle of the purification air passage 52 of the housing 500, the first dustproof net 504, the medium performance filter 505, the medium 506, the spray device 53, and the eliminator are sequentially arranged from the upstream side to the downstream side in the flow direction of the sterilization target air 51. 507, a fan device 600, and a second dustproof net 508 are provided.
　第１防塵ネット５０４、中性能フィルター５０５、メディア５０６は、浄化用通気路５２の気液接触領域を形成する風洞５０９に装着している。メディア５０６は風洞５０９の内部に吸気口５０２の側からハウジング５００の奥側に向けて斜め下方に傾斜させて配置してあり、この傾斜配置によりメディア５０６の配置に要する高さを抑制している。 The first dustproof net 504, the medium performance filter 505, and the medium 506 are attached to a wind tunnel 509 that forms a gas-liquid contact area of the purification air passage 52. The medium 506 is disposed in the wind tunnel 509 so as to be inclined obliquely downward from the air inlet 502 side toward the inner side of the housing 500, and this inclined arrangement suppresses the height required for the arrangement of the medium 506. .
　噴霧装置５３は浄化用通気路５２を流れる除菌対象空気に微酸性電解水の殺菌剤溶液をメディア５０６に沿って噴霧するもので、複数の噴霧ノズル５３１を備えている。噴霧ノズル５３１は斜め下方に向けて配置しても良く、上方に向けて配置しても良く、噴霧装置５３をメディア５０６と対向する位置に配置することも可能である。 The spraying device 53 sprays a bactericide solution of slightly acidic electrolyzed water along the medium 506 to the sterilization target air flowing through the purification air passage 52, and includes a plurality of spray nozzles 531. The spray nozzle 531 may be disposed obliquely downward, may be disposed upward, or the spray device 53 may be disposed at a position facing the medium 506.
　ここでの微酸性電解水の定義は、主な有効成分が次亜塩素酸（ＨＣＬＯ）で、ｐＨ５．０－６．５、有効塩素濃度１０－８０ｍｇ／ｋｇの水溶液である。 Here, the definition of slightly acidic electrolyzed water is an aqueous solution whose main active ingredient is hypochlorous acid (HCLO), pH 5.0-6.5, and effective chlorine concentration 10-80 mg / kg.
　中性能フィルター５０５は微細粒子を捕捉して気流中から除去する。メディア５０６は、噴霧装置５３から噴霧された噴霧水を保持して除菌対象空気と殺菌剤溶液との気液接触を促すものであって、例えば、ポリ塩化ビニルデン系繊維をマット状にしたものである。エリミネータ５０７は、水滴やミストを捕捉して気流中から除去するものであり、メディア５０６を配した風洞５０９の上方位置に配置している。 The medium performance filter 505 captures fine particles and removes them from the air stream. The medium 506 holds the sprayed water sprayed from the spraying device 53 and promotes gas-liquid contact between the sterilization target air and the bactericide solution. For example, the media 506 is formed by matting polyvinylidene chloride fibers. It is. The eliminator 507 captures water droplets and mist and removes them from the air stream, and is disposed above the wind tunnel 509 in which the medium 506 is disposed.
　風洞５０９の下方には風洞５０９から降下する殺菌剤溶液を受け止めるパン５１０を配置しており、エリミネータ５０７、メディア５０６、風洞５０９、パン５１０はメンテナンス時にハウジング５００から取り外しが可能であり、メディア５０６は風洞５０９の前面側から脱着を行う。また、運転中にエリミネータ５０７を持ち上げることで殺菌剤溶液の噴霧状態を確認可能である。 A pan 510 for receiving the bactericide solution descending from the wind tunnel 509 is disposed below the wind tunnel 509. The eliminator 507, the medium 506, the wind tunnel 509, and the pan 510 can be detached from the housing 500 during maintenance. Desorption is performed from the front side of the wind tunnel 509. Further, the spray state of the bactericide solution can be confirmed by lifting the eliminator 507 during operation.
　パン５１０の下方には循環槽５４が設けてあり、循環槽５４は浄化用通気路５２から降下する殺菌剤溶液やパン５１０から流入する殺菌剤溶液を受け止めて貯溜するものである。循環槽５４の内部には中継槽５４１を設けており、中継槽５４１を覆って降下液ガイド板５４２を設けている。 A circulation tank 54 is provided below the pan 510. The circulation tank 54 receives and stores the bactericide solution descending from the purification vent 52 and the bactericide solution flowing from the pan 510. A relay tank 541 is provided inside the circulation tank 54, and a descending liquid guide plate 542 is provided to cover the relay tank 541.
　循環槽５４と噴霧装置５３の間には循環系５５が配設してあり、循環系５５は循環ポンプ５５０により循環槽５４の殺菌剤溶液を噴霧装置５３に供給するものである。 A circulation system 55 is disposed between the circulation tank 54 and the spraying device 53, and the circulation system 55 supplies the disinfectant solution in the circulation tank 54 to the spraying device 53 by a circulation pump 550.
　循環系５５では、殺菌剤溶液の噴霧と排出を兼ねる循環ポンプ５５０が循環槽５４の下方に位置し、循環ポンプ５５０の下流側に三方切替弁５５１および逆止弁５５２を介装している。三方切替弁５５１から排水系５６７が分岐しており、三方切替弁５５１を切替操作することで１台の循環ポンプ５５０を兼用して殺菌剤溶液の循環と排出を実施できる。 In the circulation system 55, a circulation pump 550 that serves both for spraying and discharging the bactericide solution is located below the circulation tank 54, and a three-way switching valve 551 and a check valve 552 are interposed on the downstream side of the circulation pump 550. A drainage system 567 branches from the three-way switching valve 551. By switching the three-way switching valve 551, it is possible to circulate and discharge the bactericide solution by using one circulation pump 550.
　また、循環ポンプ５５０の停止時には逆止弁５５２が循環系５５における殺菌剤溶液の逆流を阻止するので、噴霧装置５３の噴霧ノズル５３１を上方に向けて配置すれば、循環ポンプ５５０の停止時に循環系５５の内部が殺菌剤溶液で満たされた状態となり、循環ポンプ５５０の再起動時に空気の排出に起因する異音が発生しない。 Further, when the circulation pump 550 is stopped, the check valve 552 prevents backflow of the bactericide solution in the circulation system 55. Therefore, if the spray nozzle 531 of the spray device 53 is arranged facing upward, the circulation pump 550 is circulated when the circulation pump 550 is stopped. The inside of the system 55 is filled with the bactericide solution, and no abnormal noise due to air discharge occurs when the circulation pump 550 is restarted.
　薬剤供給系５６は、生成時濃度を有する原液の微酸性電解水を殺菌剤溶液として供給するものであり、微酸性電解水を生成する生成装置５６１と、生成装置５６１に給水する給水系５６２と、給水系５６２から分岐して希釈用水を循環槽５４に供給する希釈用水供給系５６３と、先に述べた中継槽５４１と、生成装置５６１から微酸性電解水を中継槽５４１および中継槽５４１を介して循環槽５４に調製用大流量で供給する調製用供給部５６４と、中継槽５４１から循環槽５４へ微酸性電解水を補給用小流量で滴下して供給する中継ポンプ５６５を介装した補給用供給部５６６を備えている。 The chemical supply system 56 supplies a slightly acidic electrolyzed water having a concentration at the time of generation as a bactericide solution, a generating device 561 that generates the slightly acidic electrolyzed water, and a water supply system 562 that supplies the generating device 561 with water. The diluting water supply system 563 that branches from the water supply system 562 and supplies the diluting water to the circulation tank 54, the relay tank 541 described above, and the slightly acidic electrolyzed water from the generating device 561 through the relay tank 541 and the relay tank 541 A preparation supply unit 564 that supplies the recirculation tank 54 to the circulation tank 54 at a large flow rate for preparation, and a relay pump 565 that drops and supplies slightly acidic electrolyzed water from the relay tank 541 to the circulation tank 54 at a small replenishment flow rate. A replenishment supply unit 566 is provided.
　中継槽５４１は、底面が調製用供給部５６４の開口５６４ａに対応する一方側縁５４１ａから他方側縁５４１ｂに向けて下り勾配に傾斜した後に、最底部５４１ｃを経て上り勾配に傾斜している。他方側縁５４１ｂは、一方側縁５４１ａに比べて低い位置にあり、越流縁をなし、最低部５４１ｃに補給用供給部５６６が接続している。 The relay tank 541 has a bottom surface that inclines downward from the one side edge 541a corresponding to the opening 564a of the preparation supply unit 564 toward the other side edge 541b, and then inclines upward through the bottom 541c. The other side edge 541b is at a lower position than the one side edge 541a, forms an overflow edge, and the supply part 566 for supply is connected to the lowest part 541c.
　本実施の形態で中継槽５４１は循環槽５４の内部に配置しているが、循環槽５４の外部に配置することも可能である。しかし、中継槽５４１を循環槽５４の外部に配置すると、漏水対策用の防水パン等を別途に設ける必要がある。本実施の形態のように、中継槽５４１を循環槽５４の内部に配置することで漏水対策用の構成部材が不要となる。 In the present embodiment, the relay tank 541 is disposed inside the circulation tank 54, but may be disposed outside the circulation tank 54. However, if the relay tank 541 is disposed outside the circulation tank 54, it is necessary to separately provide a waterproof pan or the like for preventing water leakage. By disposing the relay tank 541 inside the circulation tank 54 as in the present embodiment, a component member for countermeasures against water leakage becomes unnecessary.
　調剤用供給部５６４には三方切替弁５６４ｂが介装してあり、三方切替弁５６４ｂから外部取出部５６４ｃが分岐しており、外部取出部５６４ｃの給水口５６４ｄはハウジング５００の側部に設けてある。 The dispensing supply portion 564 is provided with a three-way switching valve 564b, and an external extraction portion 564c branches from the three-way switching valve 564b. A water supply port 564d of the external extraction portion 564c is provided on the side of the housing 500. is there.
　循環槽５４の内部には下限液位計５４ａ、中位液位計５４ｂ、上限液位計５４ｃをそれぞれの設定液位に相当する位置に設けている。扉体５０１の前面には空気清浄装置の運転を担う制御装置７００を設けている。 In the circulation tank 54, a lower limit liquid level meter 54a, a middle level liquid level meter 54b, and an upper limit liquid level meter 54c are provided at positions corresponding to the respective set liquid levels. A control device 700 is provided on the front surface of the door body 501 to take charge of the operation of the air purifier.
　制御装置７００は、通常運転モード、調製運転モード、洗浄運転モードを担う機能回路を有しており、通常運転モードと調製運転モードとを１サイクルとするバッチ運転を繰り返し、通常運転モードと調製運転モードとのサイクルを複数回行った後に洗浄運転モードを実施する。 The control device 700 has functional circuits responsible for the normal operation mode, the preparation operation mode, and the cleaning operation mode, and repeats the batch operation in which the normal operation mode and the preparation operation mode are one cycle, and the normal operation mode and the preparation operation are repeated. After the cycle with the mode is performed a plurality of times, the cleaning operation mode is performed.
　本実施の形態では、通常運転モードが２０－４０分程度、調製運転モードが排水時間を含めて６５秒程度であり、洗浄運転モードを１日１回以上の頻度で行う。 In this embodiment, the normal operation mode is about 20-40 minutes, the preparation operation mode is about 65 seconds including the drainage time, and the cleaning operation mode is performed at a frequency of once or more per day.
　以下、上記した構成の作用を説明する。
（通常運転モード）
　薬剤供給装置５６は、中継ポンプ５６５により補給用供給部５６６を介して中継槽５４１から循環槽５４へ微酸性電解水を補給用小流量、ここでは例えば０．０５Ｌ／分で滴下して供給する。そして、循環槽５４の殺菌剤溶液の有効塩素濃度を０．１－１０ｍｇ／Ｌに維持し、循環槽５４の殺菌剤溶液を殺菌に適した希釈濃度に保つ。 The operation of the above configuration will be described below.
(Normal operation mode)
The medicine supply device 56 supplies the slightly acidic electrolyzed water dropwise by the relay pump 565 from the relay tank 541 to the circulation tank 54 via the supply section 566 for supply, for example, 0.05 L / min. . Then, the effective chlorine concentration of the sterilizing agent solution in the circulation tank 54 is maintained at 0.1-10 mg / L, and the sterilizing agent solution in the circulation tank 54 is maintained at a dilution concentration suitable for sterilization.
　この状態で、循環ポンプ５５０によって循環槽５４の殺菌剤溶液を噴霧装置５３に供給する。噴霧装置５３は、ハウジング５００の浄化用通気路５２を上流側から下流側に流れる除菌対象空気５１に対し、噴霧ノズル５３１から循環槽５４で濃度調整された殺菌剤溶液を噴霧する。 In this state, the bactericide solution in the circulation tank 54 is supplied to the spray device 53 by the circulation pump 550. The spraying device 53 sprays the sterilizing agent solution whose concentration is adjusted in the circulation tank 54 from the spray nozzle 531 to the sterilization target air 51 flowing from the upstream side to the downstream side through the purification air passage 52 of the housing 500.
　その際に、槽内の液位は、中位液位計５４ｂの中位設定レベルと上限液位計５４ａの高位設定レベルの間に維持し、噴霧により失われた損失量を補うために、必要に応じて希釈用水供給系５６３から希釈用水を供給する。供給量は殺菌剤溶液：希釈用水＝１：９の割合で供給する。 At that time, the liquid level in the tank is maintained between the middle set level of the middle liquid level meter 54b and the high level set level of the upper limit liquid level meter 54a in order to make up for the loss lost by spraying. Dilution water is supplied from the dilution water supply system 563 as necessary. The supply amount is supplied at a ratio of bactericide solution: water for dilution = 1: 9.
　この噴霧により、除菌対象空気５１は、それに含まれる浮遊菌や塵埃等の異物が殺菌剤溶液の噴霧水に衝突して捕捉され、除菌される。さらにメディア５０６に到達した殺菌剤溶液の噴霧水は、メディア５０６に付着した浮遊菌や塵埃を流下させるとともに、除菌対象空気５１に含まれた浮遊菌や塵埃等の異物を取り込み、循環槽５４内に流入する。 噴霧 By this spraying, the sterilization target air 51 is trapped by trapping foreign substances such as airborne bacteria and dust colliding with the spray water of the bactericide solution and sterilizing. Furthermore, the spray water of the bactericide solution that has reached the medium 506 causes the floating bacteria and dust attached to the medium 506 to flow down, and takes in foreign matters such as the floating bacteria and dust contained in the sterilization target air 51, and the circulation tank 54. Flows in.
　循環槽５４では、微酸性電解水が補給用小流量で滴下されることで、循環槽５４の槽内の殺菌剤溶液の有効塩素濃度が０．１－１０ｍｇ／Ｌの殺菌に適した希釈濃度に維持されている。このため、循環槽５４内に流入する菌を確実に除菌することができる。また、殺菌剤溶液を除菌対象空気５１に高い飽和効率で直接的に噴霧することで、除菌対象空気５１に含まれた浮遊菌や塵埃等の異物を殺菌剤溶液に取り込むことができ、除菌に加えて除塵も実現できる。 In the circulation tank 54, a slightly acidic electrolyzed water is dropped at a small flow rate for replenishment, so that the effective chlorine concentration of the bactericide solution in the tank of the circulation tank 54 is a dilution concentration suitable for sterilization of 0.1-10 mg / L. Is maintained. For this reason, the bacteria flowing into the circulation tank 54 can be surely sterilized. Further, by spraying the bactericide solution directly on the sterilization target air 51 with high saturation efficiency, foreign substances such as floating bacteria and dust contained in the sterilization target air 51 can be taken into the bactericide solution, In addition to sterilization, dust removal can also be realized.
　メディア５０６を通過した殺菌後の空気は、エリミネータ５０７を通過してファン装置６００により室内へ供給される。
（調製運転モード）
　三方切替弁５５１を操作し、循環ポンプによって循環槽５４の古い殺菌剤溶液を排出系５６７から系外へ排出し、循環槽５４の液位を下限液位計５４ａの下位設定レベルにまで低下させる。 The sterilized air that has passed through the medium 506 passes through the eliminator 507 and is supplied into the room by the fan device 600.
(Preparation operation mode)
The three-way switching valve 551 is operated to discharge the old disinfectant solution in the circulation tank 54 from the discharge system 567 to the outside by the circulation pump, and lower the liquid level in the circulation tank 54 to the lower set level of the lower limit liquid level meter 54a. .
　次に、三方切替弁５５１を元の状態に戻し、循環系５５が噴霧装置５３に接続する状態とする。薬剤供給系５６は、給水系５６２から生成装置５６１に供給水し、生成装置５６１において２－２１％塩酸水の被電解液を電解して微酸性電解水を生成し、生成時濃度の微酸性電解水を殺菌剤溶液として調製用供給部５６４を通して中継槽５４１に調製用大流量、ここでは例えば５Ｌ／分で供給する。 Next, the three-way switching valve 551 is returned to the original state so that the circulation system 55 is connected to the spray device 53. The chemical supply system 56 supplies water from the water supply system 562 to the generating device 561, and the generating device 561 electrolyzes an electrolyzed solution of 2-21% hydrochloric acid to generate slightly acidic electrolyzed water, which is slightly acidic at the concentration at the time of generation. Electrolyzed water is supplied as a bactericide solution through the preparation supply unit 564 to the relay tank 541 at a large flow rate for preparation, for example, 5 L / min.
　調製用供給部５６４の開口５６４ａから中継槽５４１に流入する殺菌剤溶液は、一方側縁５４１ａから他方側縁５４１ｂに向けて流れ、中継槽５４１に滞留する水道水由来の異物を洗い流しながら他方側縁５４１ｂから越流し、循環槽５４に供給される。 The bactericide solution flowing into the relay tank 541 from the opening 564a of the preparation supply unit 564 flows from the one side edge 541a toward the other side edge 541b, and the other side while washing away foreign substances derived from tap water remaining in the relay tank 541. It overflows from the edge 541b and is supplied to the circulation tank 54.
　生成時濃度の殺菌剤溶液の供給と同時に、希釈用水供給系５６３から希釈用水を循環槽５４に、ここでは例えば６Ｌ／分で供給する。供給量は殺菌剤溶液：希釈用水＝１：９の割合で供給し、循環槽５４に設定濃度の殺菌剤溶液、つまり殺菌剤溶液の有効塩素濃度が０．１－１０ｍｇ／Ｌである新しい殺菌剤溶液を回分調製し、循環槽５４内に上限液位計５４ｃの上位設定レベルにまで殺菌剤溶液を貯溜する。 Simultaneously with supply of the bactericide solution at the time of production, dilution water is supplied from the dilution water supply system 563 to the circulation tank 54 at, for example, 6 L / min. The amount supplied is a ratio of bactericidal solution: dilution water = 1: 9, and a new bactericidal solution having a set concentration of bactericidal solution, that is, the effective chlorine concentration of the bactericidal solution is 0.1-10 mg / L. The bactericide solution is prepared in batches, and the bactericide solution is stored in the circulation tank 54 to the upper set level of the upper limit liquid level meter 54c.
　このように、調製運転モードでは、調製用供給部５６４から殺菌剤溶液を調製用大流量で供給するとともに、希釈用水供給系５６３から希釈用水を供給することで、短時間に殺菌剤溶液の更新を行うことができる。 In this way, in the preparation operation mode, the bactericide solution is supplied from the preparation supply unit 564 at a large flow rate for preparation, and the dilution water is supplied from the dilution water supply system 563, so that the bactericide solution can be updated in a short time. It can be performed.
　また、通常運転モードでは、殺菌剤溶液を設定濃度に保って薬効を維持しつつ、除菌対象空気から殺菌剤溶液中に移行した異物を循環槽内に滞留させる。調製運転モードでは、異物とともに古い殺菌剤溶液を排出し、循環槽内の殺菌剤溶液を更新して清浄性を回復させる。このため、従来のような殺菌剤溶液と希釈用水を連続的に供給することに因るオーバーフローが生じず、一時貯溜のための排水槽が不要となり、循環槽５４の内部の古い殺菌剤溶液の全量を一度に排出することで、高い稼働効率でポンプを運転できる。
（洗浄運転モード）
　洗浄運転モードでは、三方切替弁５５１を操作し、循環ポンプによって循環槽５４の古い殺菌剤溶液を排出系５６７から系外へ排出し、調製用供給部５６４から殺菌剤溶液を循環槽５４に供給し、循環槽５４に所定量の殺菌剤溶液を満たして循環槽５４を薬剤洗浄する。 Further, in the normal operation mode, the foreign matter transferred from the sterilization target air into the bactericide solution is retained in the circulation tank while maintaining the medicinal effect by keeping the bactericide solution at a set concentration. In the preparation operation mode, the old sterilizing agent solution is discharged together with the foreign matter, and the sterilizing agent solution in the circulation tank is updated to restore the cleanliness. For this reason, there is no overflow due to continuous supply of the bactericidal solution and dilution water as in the prior art, and a drainage tank for temporary storage becomes unnecessary, and the old bactericidal solution inside the circulation tank 54 By discharging the entire amount at once, the pump can be operated with high operating efficiency.
(Washing operation mode)
In the cleaning operation mode, the three-way switching valve 551 is operated, the old bactericide solution in the circulation tank 54 is discharged from the discharge system 567 to the outside by the circulation pump, and the bactericide solution is supplied from the preparation supply unit 564 to the circulation tank 54. Then, the circulation tank 54 is filled with a predetermined amount of the bactericidal agent solution, and the circulation tank 54 is cleaned with chemicals.
　この洗浄運転モードにおいても、調製用供給部５６４から殺菌剤溶液を調製用大流量で循環槽５４に供給することで、循環槽５４の内部に所定量の殺菌剤溶液を短時間に満たして循環槽５４を薬剤洗浄することができる。
（微酸性電解水の取り出し）
　空気清浄装置から微酸性電解水を取り出す場合には、三方切替弁５６４ｂを操作し、調剤用供給部５６４を外部取出部５６４ｃに接続し、微酸性電解水を給水口５６４ｄから取り出す。
（実施の形態２）
　実施の形態１では中継槽５４１の越流口をなす他方側縁５４１ｂから循環槽５４に殺菌剤溶液を越流させた。この構成に替えて以下の構成とすることも可能である。 Even in this cleaning operation mode, the bactericidal solution is supplied from the preparation supply unit 564 to the circulation tank 54 at a large flow rate for preparation, so that a predetermined amount of the bactericide solution is filled in the circulation tank 54 and circulated in a short time. The tank 54 can be cleaned with chemicals.
(Removal of slightly acidic electrolyzed water)
When the slightly acidic electrolyzed water is taken out from the air cleaning device, the three-way switching valve 564b is operated, the dispensing supply unit 564 is connected to the external takeout unit 564c, and the slightly acidic electrolyzed water is taken out from the water supply port 564d.
(Embodiment 2)
In the first embodiment, the bactericide solution is caused to flow into the circulation tank 54 from the other side edge 541 b that forms the overflow port of the relay tank 541. It is also possible to adopt the following configuration instead of this configuration.
　図５および図６に示すように、中継槽５４１の槽底部を貫通してオーバーフロー管５９１を配置し、オーバーフロー管５９１の上端開口５９１ａを中継槽５４１の水面付近に開口させて越流口とし、下端開口５９１ｂを循環槽５４の下位設定レベルより下方位置に開口させる。そして、調剤用供給部５６４の開口５６４ｅを中継槽５４１の水面下に配置する。 As shown in FIGS. 5 and 6, the overflow pipe 591 is disposed through the bottom of the relay tank 541, the upper end opening 591 a of the overflow pipe 591 is opened near the water surface of the relay tank 541, and is used as an overflow port, The lower end opening 591b is opened below the lower set level of the circulation tank 54. And the opening 564e of the supply part 564 for dispensing is arrange | positioned under the water surface of the relay tank 541. FIG.
　この構成により、循環槽５４の古い殺菌剤溶液を排出した後に循環槽５４へ生成時濃度の殺菌剤溶液を供給する時に、中継槽５４１の殺菌剤溶液は、オーバーフロー管５９１を通して循環槽５４に流下し、下位設定レベルの水面下に流れ出る。このため、殺菌剤溶液が循環槽５４の内部で水面を叩くことがなくなり、その衝撃の水音の発生を防止できる。同様に、調剤用供給部５６４から中継槽５４１に流下する殺菌剤溶液が中継槽５４１の水面下に流れ出るので、殺菌剤溶液が中継槽５４１の水面を叩くことがなくなり、その衝撃の水音の発生を防止できる。 With this configuration, when the sterilant solution having the concentration at the time of production is supplied to the circulation tank 54 after discharging the old sterilant solution from the circulation tank 54, the sterilizer solution in the relay tank 541 flows down to the circulation tank 54 through the overflow pipe 591. Then it flows below the surface of the lower set level. For this reason, the disinfectant solution does not hit the water surface inside the circulation tank 54, and the generation of the water noise of the impact can be prevented. Similarly, since the bactericidal solution flowing down from the dispensing supply unit 564 to the relay tank 541 flows out below the water surface of the relay tank 541, the bactericidal solution does not hit the water surface of the relay tank 541, and the water noise of the impact is reduced. Occurrence can be prevented.
　また、調剤用供給部５６４の開口５６４ｅが中継槽５４１の底部近傍で底面に向けて開口することで、中継槽５４１の底部に滞留する供給水由来の含有物が０開口５６４ｅから噴出する殺菌剤溶液で巻きあげられる。このため、供給水由来の含有物が殺菌剤溶液とともに、オーバーフロー管５９１を通して循環槽５４に排出されることになり、調製運転モードや洗浄運転モードを行う度に中継槽５４１を洗浄できる。
（実施の形態３）
　また、中継槽５４１を循環槽５４の外部に配置する場合には、越流縁である他方側縁５４１ｂを循環槽５４の内側に配置する。そして、調製運転モードおよび洗浄運転モードにおいて、生成時濃度の微酸性電解水を殺菌剤溶液として調製用供給部５６４を通して中継槽５４１に調製用大流量で供給する。通常運転モードでは、中継ポンプ５６５により補給用供給部５６６を介して中継槽５４１から循環槽５４へ微酸性電解水を補給用小流量で滴下して供給し、循環槽５４の殺菌剤溶液の有効塩素濃度を０．１－１０ｍｇ／Ｌに維持する。 Further, the opening 564e of the dispensing supply unit 564 opens toward the bottom in the vicinity of the bottom of the relay tank 541 so that the content derived from the supply water staying at the bottom of the relay tank 541 is ejected from the 0 opening 564e. Rolled up with solution. For this reason, the content derived from the supply water is discharged together with the bactericide solution to the circulation tank 54 through the overflow pipe 591, and the relay tank 541 can be cleaned every time the preparation operation mode and the cleaning operation mode are performed.
(Embodiment 3)
When the relay tank 541 is disposed outside the circulation tank 54, the other side edge 541 b that is an overflow edge is disposed inside the circulation tank 54. Then, in the preparation operation mode and the washing operation mode, slightly acidic electrolyzed water having a production concentration is supplied as a bactericide solution to the relay tank 541 through the preparation supply unit 564 at a large flow rate for preparation. In the normal operation mode, the slightly acidic electrolyzed water is dropped and supplied from the relay tank 541 to the circulation tank 54 via the supply unit 566 by the relay pump 565 at a small flow rate for replenishment. Maintain the chlorine concentration at 0.1-10 mg / L.

Claims (4)

  1. 　除菌対象空気が上流側から下流側に流れる浄化用通気路を有するハウジングと、浄化用通気路を流れる除菌対象空気に殺菌剤溶液を噴霧する噴霧装置と、浄化用通気路から降下する殺菌剤溶液を受け止める循環槽と、循環槽の殺菌剤溶液を噴霧装置に供給する循環系と、循環槽の殺菌剤溶液を系外へ排出する排出系と、循環槽に殺菌剤溶液を供給する薬剤供給系と、殺菌剤溶液を希釈する希釈用水を供給する希釈用水供給系と、制御装置を備え、
    　薬剤供給系は、殺菌剤溶液を循環槽へ供給する調製用供給部と補給用供給部の二つの供給部を有し、
    　制御装置は、通常運転モードと調製運転モードとを１サイクルとするバッチ運転を繰り返し実施し、
    　通常運転モードでは、循環槽に貯溜した殺菌剤溶液を循環系、噴霧装置、浄化用通気路、循環槽の間で循環させつつ、補給用供給部から殺菌剤溶液を補給用小流量で循環槽に供給して殺菌剤溶液の設定濃度を維持し、
    　調製運転モードでは、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を調製用大流量で供給するとともに、希釈用水供給系から希釈用水を供給して循環槽内に設定濃度の新しい殺菌剤溶液を回分調製することを特徴とする空気清浄装置。     A housing having a purification ventilation path in which the air to be sterilized flows from the upstream side to the downstream side, a spraying device for spraying a sterilizing agent solution to the air to be sterilized flowing in the purification path, and a sterilization descending from the purification ventilation path A circulation tank for receiving the sterilant solution, a circulation system for supplying the sterilizer solution in the circulation tank to the spraying device, a discharge system for discharging the sterilant solution in the circulation tank out of the system, and a medicine for supplying the sterilant solution to the circulation tank A supply system, a dilution water supply system for supplying dilution water for diluting the bactericide solution, and a control device;
    The drug supply system has two supply parts, a supply part for preparation and a supply part for replenishment, which supply the bactericide solution to the circulation tank,
    The control device repeatedly performs batch operation in which the normal operation mode and the preparation operation mode are one cycle,
    In the normal operation mode, the sterilizer solution stored in the circulation tank is circulated between the circulation system, the spray device, the purification air passage, and the circulation tank, and the sterilizer solution is circulated at a small supply flow rate from the replenishment supply unit. To maintain the set concentration of the disinfectant solution,
    In the preparation operation mode, the old bactericidal solution in the circulation tank is discharged out of the system from the discharge system, the bactericide solution is supplied from the preparation supply unit at a large flow rate for preparation, and the dilution water is supplied from the dilution water supply system. Then, a new disinfectant solution having a set concentration is batch-prepared in the circulation tank, and the air purifying apparatus is characterized.
  2. 　制御装置は、通常運転モードと調製運転モードとのサイクルを複数回行った後に実施する洗浄運転モードを有し、
    　洗浄運転モードでは、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を循環槽に供給し、循環槽内に所定量の殺菌剤溶液を満たして循環槽を薬剤洗浄することを特徴とする請求項１に記載の空気清浄装置。     The control device has a cleaning operation mode to be performed after performing a cycle of the normal operation mode and the preparation operation mode a plurality of times,
    In the washing operation mode, the old bactericidal solution in the circulation tank is discharged from the discharge system to the outside, the bactericide solution is supplied from the preparation supply unit to the circulation tank, and the circulation tank is filled with a predetermined amount of the bactericide solution. The air cleaning apparatus according to claim 1, wherein the circulation tank is cleaned with chemicals.
  3. 　通常運転モードにおいて、循環槽に貯溜した殺菌剤溶液を循環系を通して噴霧装置に供給し、浄化用通気路を流れる除菌対象空気に噴霧装置から殺菌剤溶液を噴霧し、浄化用通気路から降下する殺菌剤溶液を循環槽で受け止めて殺菌剤溶液を循環させつつ、補給用供給部から殺菌剤溶液を補給用小流量で循環槽に供給して殺菌剤溶液の設定濃度を維持し、
    　調製運転モードにおいて、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を調製用大流量で供給するとともに、希釈用水供給系から希釈用水を供給して循環槽内に設定濃度の新しい殺菌剤溶液を回分調製し、
    　通常運転モードと調製運転モードとを１サイクルとするバッチ運転を繰り返し実施することを特徴とする空気清浄装置の運転方法。     In normal operation mode, the bactericidal solution stored in the circulation tank is supplied to the spraying device through the circulation system, sprayed with the bactericidal solution from the spraying device to the sterilization target air flowing through the purification ventilation path, and descended from the purification ventilation path. While receiving the bactericidal solution to be circulated in the circulation tank and supplying the bactericide solution from the replenishment supply unit to the circulation tank at a small flow rate for replenishment, the set concentration of the bactericide solution is maintained,
    In the preparation operation mode, the old bactericide solution in the circulation tank is discharged out of the system from the discharge system, the bactericide solution is supplied from the preparation supply unit at a large flow rate for preparation, and the dilution water is supplied from the dilution water supply system. Then prepare a new disinfectant solution with a set concentration in the circulation tank,
    An operation method of an air cleaning device, wherein a batch operation in which a normal operation mode and a preparation operation mode are one cycle is repeatedly performed.
  4. 　通常運転モードと調製運転モードとのサイクルを複数回行った後に洗浄運転モードを実施し、
    　洗浄運転モードでは、循環槽内の古い殺菌剤溶液を排出系から系外へ排出し、調製用供給部から殺菌剤溶液を循環槽に供給し、循環槽内に所定量の殺菌剤溶液を満たして循環槽を薬剤洗浄することを特徴とする請求項３に記載の空気清浄装置の運転方法。     After performing the cycle of normal operation mode and preparation operation mode multiple times, carry out the cleaning operation mode,
    In the washing operation mode, the old bactericidal solution in the circulation tank is discharged from the discharge system to the outside, the bactericide solution is supplied from the preparation supply unit to the circulation tank, and the circulation tank is filled with a predetermined amount of the bactericide solution. 4. The method of operating the air purifier according to claim 3, wherein the circulation tank is cleaned with chemicals.
PCT/JP2016/067325 2015-08-06 2016-06-10 Air purification apparatus and operation method WO2017022332A1 (en)

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