JP2020049031A - Method for removing bacteria, viruses and odorous substances in the air, and air cleaning device using the same - Google Patents

Abstract

To provide a method for removing bacteria, viruses and odorous substances in the air, which has a high removing performance, and an air purifying apparatus using the method.SOLUTION: The air in the indoor space is sucked into an air purifying apparatus through a suction port 2, flows through an air flow path 4, contacts a first gas-liquid contact filter 6, a removal filter 7, and a second gas-liquid contact filter 8 in this order, and goes out from an outlet 3 to the indoor space. This air is brought into contact with water by the first gas-liquid contact filter 6 to dissolve the dirt in the air into the water. In addition, the air humidified by contact with water can be sent to the removal filter 7. By contacting the air after passing through the removal filter 7 with water in the second gas-liquid contact filter 8, vaporized hypochlorous acid is absorbed in water and recovered. Resulting in that, the concentration of the hypochlorous acid at the removal filter section is increased, thus the removal performance of bacteria, viruses, and odorous substances in the removal filter 7 may be enhanced.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air purification device for removing bacteria, viruses, odors and the like in the air.

  Hypochlorous acid water obtained by electrolyzing water is supplied to the filter member and aerated, so that hypochlorous acid water comes into contact with air, or vaporized hypochlorous acid comes into contact with air, and An air purification device for removing bacteria, viruses and odorous substances has already been proposed.

JP 2012-052699 A

  In such a conventional air purification device, the removal performance is higher as the concentration of hypochlorous acid water is higher. However, when bacteria accumulate on filter members and the like, hypochlorous acid is consumed where the bacteria accumulate. The chloric acid concentration decreases, and the removal performance decreases. Further, when hypochlorous acid is vaporized, the concentration of hypochlorous acid in the air increases. Therefore, considering safety, the concentration of hypochlorous acid water cannot be increased. That is, there is a limit to the performance of removing bacteria, viruses and odorous substances from the air.

  Therefore, an object of the present invention is to provide a method for removing bacteria, viruses, and odorous substances in the air, which has high removal power, and an air purification device using the method.

  In order to achieve this object, the method for removing bacteria, viruses, and odorous substances in the air according to the present invention includes contacting hypochlorous acid water obtained by electrolyzing water with air to remove air. A method of removing bacteria, viruses, and odorants in the first gas-liquid contact filter impregnated with water, the second filter impregnated with water and a second filter impregnated with hypochlorous acid water. A gas-liquid contact filter and a ventilation passage were arranged, first, the air taken into the ventilation passage was passed through the first gas-liquid contact filter and was brought into contact with water, and secondly, the water was brought into contact with the water. Air is passed through the removal filter to contact the hypochlorous acid water, third, the air contacted with the hypochlorous acid is passed through the second gas-liquid contact filter and contacted with water, Water is supplied from one storage tank to the first gas-liquid contact filter and the second gas-liquid contact filter. Is supplied to the motor, it is recovered into said one storage tank is obtained by a structure in which circulates, thereby is to achieve the intended purpose.

  Further, the air purification device using the same, in the ventilation path in the housing, a first gas-liquid contact filter containing water, a removal filter containing hypochlorous acid water, and a second gas-liquid containing water An air purifier that removes bacteria, viruses, and odorous substances from the air that has passed through the housing by arranging the contact filters in order from the upstream side of the airflow, and a water storage tank unit that stores the water, A hypochlorous acid water storage tank unit that generates and stores chlorite water in an electrolytic cell, and sends the water stored in the water storage tank unit to a first gas-liquid contact filter and a second gas-liquid contact filter. Water supply means, recovery means for recovering the water supplied to the first gas-liquid contact filter and the second gas-liquid contact filter to the first storage tank, and water stored in the hypochlorous acid water storage tank section Supply means for sending hypochlorous acid water to the removal filter, and the removal filter The one gas-liquid contact filter and the second gas-liquid contact filter are arranged obliquely with respect to the direction of gravity, and the water storage tank, the water supply means, the first gas-liquid contact filter, and the second gas-liquid contact filter The water stored in the water storage tank section is circulated in the order of the filter and the recovery means, thereby achieving the intended purpose.

  According to the present invention, water is supplied from one storage tank to the first gas-liquid contact filter and the second gas-liquid contact filter, and is collected and circulated to the one storage tank. By contacting the air with water through the first gas-liquid contact filter, the dirt in the air is dissolved in the water. In addition, air humidified by contact with water can be sent to the removal filter. By bringing the air that has passed through the removal filter into contact with water, the vaporized hypochlorous acid can be absorbed and recovered in the water.

  That is, the hypochlorous acid consumed by the dirt is reduced by the air having reduced dirt coming into contact with the removal filter. In addition, the removal effect is improved by the humidified air passing through the removal filter. By bringing the air that has passed through the removal filter into contact with water, the vaporized hypochlorous acid dissolves in the water, so that the amount of vaporized hypochlorous acid released into the space can be reduced.

  That is, since the concentration of hypochlorous acid water can be increased in the removal filter portion, the performance of the removal filter for removing bacteria, viruses, and odorous substances can be improved.

Schematic diagram of the cross section of the air purification device Schematic diagram of the tray of the air purification device

  The method for removing bacteria, viruses and odorous substances in the air according to claim 1 of the present invention comprises contacting hypochlorous acid water obtained by electrolyzing water with air to remove bacteria, viruses, and the like in the air. A removal method for removing odorous substances, comprising: a first gas-liquid contact filter containing water, a removal filter containing hypochlorous acid water, and a second gas-liquid contact filter containing water. Arranged in the ventilation path, firstly, the air taken in the ventilation path is passed through the first gas-liquid contact filter and brought into contact with water, and secondly, the air brought into contact with the water is passed through the removal filter. Third, the air contacted with the hypochlorous acid is passed through the second gas-liquid contact filter to be brought into contact with water, and the water is stored in one storage medium. The tank is supplied to the first gas-liquid contact filter and the second gas-liquid contact filter, Is recovered into the reservoir, characterized in that circulation.

  Thus, by bringing the taken air into contact with water by the first gas-liquid contact filter, dirt in the air is dissolved in the water. In addition, air humidified by contact with water can be sent to the removal filter. By bringing the air that has passed through the removal filter into contact with water, the vaporized hypochlorous acid can be absorbed and recovered in the water.

  That is, since the concentration of hypochlorous acid water can be increased in the removal filter portion, the performance of the removal filter for removing bacteria, viruses, and odorous substances can be improved.

  Further, by making the storage tank portions of the first gas-liquid contact filter and the second gas-liquid contact filter the same, the dirt that comes into contact with water in the first gas-liquid contact filter and the second gas-liquid contact filter dissolves. The liquid contact filter can react with the hypochlorous acid water that has been absorbed by contact with water. Therefore, the first gas-liquid contact filter can continuously absorb dirt, and the second gas-liquid contact filter can continuously absorb hypochlorous acid, and further, the storage tank portion and the first gas-liquid contact filter and Since the circulation is performed by the second gas-liquid contact filter, the hypochlorous acid absorbed by the second gas-liquid contact filter can be used effectively.

  The air purifying apparatus according to claim 2 of the present invention includes a first gas-liquid contact filter containing water, a removal filter containing hypochlorous acid water, and water in an air passage in the housing. An air purifying apparatus that sequentially arranges a second gas-liquid contact filter from an upstream side of an air flow and removes bacteria, viruses, and odorous substances from air that has passed through the inside of the housing, wherein the water is stored in the water. A tank portion, a hypochlorous acid water storage tank portion for generating and storing hypochlorous acid water in the electrolytic tank, and a first gas-liquid contact filter and a second gas-liquid contact filter for storing the water stored in the water storage tank portion. Water supply means for sending to the liquid contact filter, collection means for collecting water supplied to the first gas-liquid contact filter and the second gas-liquid contact filter to the first storage tank, and storage of the hypochlorous acid water Supply means for sending hypochlorous acid water stored in the tank section to the removal filter; The filter, the first gas-liquid contact filter, and the second gas-liquid contact filter are disposed obliquely to the direction of gravity, and the water storage tank, the water supply means, the first gas-liquid contact filter and the second The water stored in the water storage tank is circulated in the order of the gas-liquid contact filter and the recovery means.

  Thereby, the water stored in the water storage tank section can be circulated in the order of the water storage tank section, the water supply means, the first gas-liquid contact filter and the second gas-liquid contact filter, and the collection means, so that the first The gas-liquid contact filter can continuously absorb dirt, and the second gas-liquid contact filter can continuously absorb hypochlorous acid.Thus, while suppressing the decrease in hypochlorous acid concentration on the removal filter, the electrolytic cell Even if the concentration of hypochlorous acid generated in the above is increased, the concentration of vaporized hypochlorous acid released into the indoor space can be suppressed. In particular, it is configured to circulate between the water storage tank section and the first gas-liquid contact filter and the second gas-liquid contact filter, so that the hypochlorous acid absorbed by the second gas-liquid contact filter is used effectively. Can also.

  Further, the air purifying apparatus according to claim 3 of the present invention is provided in each of a water storage tank section and a hypochlorous acid water storage section, and a first hypochlorous acid detection for detecting the concentration of hypochlorous acid water. Means and second hypochlorous acid detection means, concentration determination means for determining the hypochlorous acid concentration of the hypochlorous acid water storage tank section from the detected hypochlorous acid concentration, and the hypochlorous acid water storage tank Drainage means and water supply means for lowering the hypochlorous acid concentration of the section, an electrolytic cell for producing hypochlorous acid, and electrolytic means for increasing the hypochlorous acid concentration of the hypochlorous acid water storage tank section When the concentration of hypochlorous acid in the water storage tank portion is low, the concentration of hypochlorous acid in the water storage tank portion is increased in order to increase the concentration of hypochlorous acid water in the hypochlorous acid water storage tank portion. If acid is generated and the concentration in the water storage tank is high, reduce the concentration of hypochlorous acid in the hypochlorous acid water storage tank. It performed drained from hypochlorous acid solution storage tank part in order to, by water water into the electrolytic cell, in which is characterized by reducing the concentration of hypochlorous acid water of the electrolytic cell.

  By detecting the concentration of the water storage tank, the degree of air contamination can be determined. Therefore, when the concentration of hypochlorous acid in the water storage tank is low, it is determined that the contamination of the air is high, and the concentration of hypochlorous acid in the electrolytic tank is increased, and when the concentration of the water storage tank is high, It is determined that the contamination of the air is low, and the concentration of hypochlorous acid in the electrolytic cell is reduced.

  In other words, the provision of the detection means in the water storage tank makes it possible to maintain the optimal amount of hypochlorous acid generated. , The ability to remove viruses and odorous substances can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, the air purification device of the present embodiment includes a substantially box-shaped main body case 1 (casing). A substantially rectangular suction port 2 is provided on both side surfaces of the main body case 1, and a substantially square air outlet 3 is provided on the top surface of the main body case 1. An air passage 4 communicating the air outlet 2 with the outlet 3; a blowing means 5 for flowing air from the inlet 2 to the outlet 3 in the air passage 4; a first gas-liquid contact filter 6; 7, a second gas-liquid contact filter 8, a water supply tank 9, a tray 10, and a control unit 11 are provided. The two gas-liquid contact filters 6, 8 and the removal filter 7 are plate-shaped, and the first gas-liquid contact filter 6 containing water and the hypochlorous acid water are supplied from the upstream side so as to block the air passage 4. The removal filter 7 and the second gas-liquid contact filter containing water are arranged obliquely to the direction of gravity in this order.

  The blowing means 5 is provided on the upper part of the main body case 1 and is formed as a so-called sirocco fan composed of a motor, an impeller rotated by the motor, and a case surrounding them.

  The water supply tank 9 and the tray 10 are provided at a lower portion of the main body case 1 and can be removed from the main body case 1.

  The water supply tank 9 has a structure that can be hermetically sealed by a cap, but when the water supply tank 9 is installed on the tray 10, a water faucet provided on the cap is released, and water is supplied to the tray 10. . When the water level rises to the faucet, the water level closes the water supply tank 9 and the supply of water stops, so that a constant amount of water can always be supplied.

In the tray 10, as shown in FIG. 2, an electrolytic cell unit 13 having an electrode 12, a hypochlorous acid water storage tank unit 14, a water storage tank unit 15, a drain unit 16, and a water supply unit 17 are provided. Is provided.
The electrolytic cell unit 13 electrolyzes an aqueous solution of sodium chloride prepared by charging tablet water into the water supplied from the water supply tank 9 with the electrode 12 to generate hypochlorous acid water as a solution. Things.

  The water supply means 17 sends water and hypochlorous acid water to the filter through a water passage 18, and the water passage and the hypochlorous acid water passage are separately provided. This is a structure that branches off from the point of the contact filter 6.

  In the above configuration, when the air purification device is operated, first, the electrode 12 is operated, and the sodium chloride present in the electrolytic cell section 13 is consumed to generate hypochlorous acid water. This hypochlorous acid water is supplied to the removal filter 7 by the water supply means 17 through the hypochlorous acid water storage tank section 14, and circulated to the hypochlorous acid water storage tank section 14 via the recovery means 21. Is done.

  Further, water is supplied from the water storage tank section 15 to the first gas-liquid contact filter 6 and the second gas-liquid contact filter 8 by the supply means 17, and the water of the first gas-liquid contact filter is collected by the recovery means. Is mixed with the water of the second gas-liquid contact filter, collected into the water storage tank section 15, and circulated.

  Then, when the blowing means 5 operates, the air in the indoor space is sucked into the air purification device from the suction port 2 and flows through the air passage 4, where the first gas-liquid contact filter 6, the removal filter 7, and the second , And is discharged from the outlet 3 into the indoor space.

  This air contacts the water with the first gas-liquid contact filter 6 to dissolve dirt in the air into the water. Further, air humidified by contact with water can be sent to the removal filter 7. By bringing the air that has passed through the removal filter 7 into contact with water by the second gas-liquid contact filter 8, the vaporized hypochlorous acid can be absorbed and recovered in the water.

  That is, when the air with reduced contamination comes into contact with the removal filter 7, hypochlorous acid consumed by the contamination is reduced. In addition, the removal effect is improved by the humidified air passing through the removal filter. Ozone gas and chlorine dioxide gas are used for sterilization by oxidizing power in the same manner as hypochlorous acid, and it is known that the sterilization effect of these gases increases as the humidity increases. Similar effects are expected for vaporized hypochlorous acid.

  Then, the air that has passed through the removal filter 7 is brought into contact with water by the second gas-liquid contact filter 8, so that the vaporized hypochlorous acid contained in the air dissolves in the water. Chlorous acid can be reduced.

  That is, since the concentration of the hypochlorous acid water can be increased in the removal filter portion, the performance of the removal filter 7 for removing bacteria, viruses, and odorous substances can be improved.

  In addition, the first gas-liquid contact filter 6 and the second gas-liquid contact filter 8 have separate storage tank portions, and when water is circulated between the storage tank portions, respectively, the first gas-liquid contact filter Since the concentration of dirt is high in the water of the filter 6 and the concentration of hypochlorous acid is high in the water of the second gas-liquid contact filter 8, the absorption efficiency of dirt and hypochlorous acid is reduced.

  However, as in the present embodiment, by making the storage tank portions of the first gas-liquid contact filter 6 and the second gas-liquid contact filter 8 the same, the water that has absorbed the dirt and the vaporized hypochlorous acid are separated. The absorbed water can be brought into contact. That is, in the first gas-liquid contact filter 6, the dirt dissolved in contact with the water and the second gas-liquid contact filter 8 react with the hypochlorous acid water absorbed in contact with the water. Can be. Therefore, the concentration of the dirt absorbed by the first gas-liquid contact filter 6 and the concentration of hypochlorous acid absorbed by the second gas-liquid contact filter 8 can be reduced.

  That is, since the first gas-liquid contact filter 6 can continuously absorb dirt and the second gas-liquid contact filter 8 can continuously absorb hypochlorous acid, the concentration of hypochlorous acid on the removal filter 7 can be improved. Even if the concentration of hypochlorous acid generated in the electrolytic cell 13 is increased, the concentration of vaporized hypochlorous acid released into the indoor space can be suppressed while suppressing the decrease in the concentration of hypochlorous acid. In particular, since the water storage tank section 15 and the first gas-liquid contact filter 6 and the second gas-liquid contact filter 8 are configured to circulate, the hypochlorous acid absorbed by the second gas-liquid contact filter 8 can be effectively used. Can also be used.

(Embodiment 2)
In the first embodiment, the amount of hypochlorous acid generated in electrolytic layer 13 is preferably a predetermined amount.

  Therefore, an electrolytic cell 13 for producing hypochlorous acid, an electrolytic means 12 for increasing the concentration of hypochlorous acid in a hypochlorous acid water storage tank section 14, and a hypochlorite solution in the hypochlorous acid water storage tank section 14 Drainage means 16 and water supply means 9 for reducing the acid concentration are provided.

  In the water storage tank unit 15 and the hypochlorous acid water storage unit 14, a first hypochlorous acid detection unit 19 and a second hypochlorous acid detection unit 20 for detecting the concentration of hypochlorous acid water are respectively provided. Provided.

  Further, a concentration determination for determining the hypochlorous acid concentration in the hypochlorous acid water storage tank section from the hypochlorous acid concentration detected by the first hypochlorous acid detection means 19 and the second hypochlorous acid detection means 20. Means.

  When the concentration of hypochlorous acid in the water storage tank section 15 is low, the concentration of hypochlorous acid in the hypochlorite water storage tank section 14 is increased in the electrolytic tank 13 to increase the concentration of hypochlorous acid water. When an acid is generated and the concentration of the water storage tank section 15 is high, drainage is performed from the hypochlorous acid water storage tank section 14 in order to reduce the hypochlorous acid concentration of the hypochlorous acid water storage tank section 14. By supplying water to the electrolytic cell 13, the concentration of the hypochlorous acid water in the electrolytic cell 13 is reduced.

  In the above configuration, the degree of air contamination can be determined by detecting the concentration of the water storage tank unit 15. Therefore, when the hypochlorous acid concentration in the water storage tank section 15 is low, it is determined that the air is highly contaminated, and the hypochlorous acid concentration in the electrolytic tank is increased, and when the concentration in the water storage tank section is high, Accordingly, it is determined that the contamination of the air is low, and the concentration of hypochlorous acid in the electrolytic cell is lowered.

  In addition, since the concentration of hypochlorous acid is lower than that of the first hypochlorous acid detection means 19 due to the presence of the second hypochlorous acid detection means 20, when the hypochlorous acid concentration of the electrolytic layer is increased, In addition, an excessive increase in concentration can be suppressed.

  In other words, the provision of the detecting means in the water storage tank section 15 makes it possible to maintain the optimum amount of hypochlorous acid, so that the concentration of the hypochlorous acid solution is increased and the removal filter 7 is removed. , The performance of removing bacteria, viruses and odorous substances can be improved.

  It is expected to be used as an air purification device for disinfecting and deodorizing homes, offices, and public spaces.

DESCRIPTION OF SYMBOLS 1 Main body case 2 Suction port 3 Blow-out port 4 Air flow path 5 Air blowing means 6 First gas-liquid contact filter 7 Removal filter 8 Second gas-liquid contact filter 9 Water supply tank 10 Tray 11 Control part 12 Electrode 13 Electrolyte part 14 Hypochlorous acid water storage tank section 15 Water storage tank section 16 Drainage means 17 Water supply means 18 Waterway 19 First hypochlorous acid detection means 20 Second hypochlorous acid detection means 21 Recovery means

Claims (3)

How to remove bacteria, viruses and odors from the air
A method of removing bacteria, viruses, and odorous substances in the air by bringing hypochlorous acid water obtained by electrolyzing water into contact with air,
A first gas-liquid contact filter impregnated with water and a removal filter impregnated with hypochlorous acid water and a second gas-liquid contact filter impregnated with water are arranged in the ventilation path,
First, the air taken into the ventilation passage is passed through the first gas-liquid contact filter and is brought into contact with water, and secondly, the air brought into contact with the water is passed through the removal filter and hypochlorous acid is passed therethrough. Thirdly, the air contacted with the hypochlorous acid is passed through the second gas-liquid contact filter and contacted with water,
Water is supplied to the first gas-liquid contact filter and the second gas-liquid contact filter from one storage tank part, bacteria in the air characterized by being collected and circulated to the one storage tank, virus, How to remove odorous substances. In the ventilation path in the housing, a first gas-liquid contact filter containing water, a removal filter containing hypochlorous acid water, and a second gas-liquid contact filter containing water are arranged in order from the upstream side of the airflow. An air purifying device that removes bacteria, viruses, and odorous substances from the air that has passed through the housing,
A water storage tank unit for storing the water, and a hypochlorous acid water storage tank unit for generating and storing hypochlorous acid water in an electrolytic tank,
Water supplied to the first gas-liquid contact filter and the second gas-liquid contact filter, and the water stored in the water storage tank section was supplied to the first gas-liquid contact filter and the second gas-liquid contact filter. A supply unit for collecting water in the first storage tank and a supply unit for sending the hypochlorous acid water stored in the hypochlorous acid water storage tank unit to the removal filter,
The removal filter, the first gas-liquid contact filter, and the second gas-liquid contact filter are arranged obliquely with respect to the direction of gravity, and the water storage tank unit, the water supply means, the first gas-liquid contact filter and the second An air purifier that circulates the water stored in the water storage tank in the order of the second gas-liquid contact filter and the recovery means. Provided in the water storage tank section and the hypochlorous acid water storage section, respectively, the first hypochlorous acid detection means and the second hypochlorous acid detection means for detecting the concentration of hypochlorous acid water,
Concentration determining means for determining the hypochlorous acid concentration of the hypochlorous acid water storage tank from the detected hypochlorous acid concentration,
Drainage means and water supply means for reducing the concentration of hypochlorous acid in the hypochlorous acid water storage tank section,
An electrolytic cell for producing hypochlorous acid,
Electrolytic means for increasing the hypochlorous acid concentration of the hypochlorous acid water storage tank section,
When the concentration of hypochlorous acid in the water storage tank section is low, hypochlorous acid is generated in the electrolytic cell to increase the concentration of hypochlorous acid water in the hypochlorous acid water storage tank section. ,
When the concentration of the storage tank part of the water storage tank part is high, drainage is performed from the hypochlorous acid water storage tank part to reduce the hypochlorous acid concentration of the hypochlorous acid water storage tank part, An air purifier that reduces the concentration of hypochlorous acid water in the electrolytic cell by supplying water.

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