JP2022076149A

JP2022076149A - Air cleaning apparatus, and air cleaning method

Info

Publication number: JP2022076149A
Application number: JP2020186433A
Authority: JP
Inventors: 健吾西田; Kengo Nishida; 洋介志方; Yosuke Shikata; 哲也中村; Tetsuya Nakamura
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2022-05-19

Abstract

To provide an air cleaning apparatus having an excellent function of gas-liquid mixing that is able to always clean the air in a room to obtain a good indoor environment.SOLUTION: An air cleaning apparatus includes a gas-liquid mixing pipe for running room air suctioned from an object room of cleaning by a ventilator while injecting circulation water, a mixing tank for gas-liquid contact that is equipped with a plurality of plate members having an opening installed in a shelf shape for mixing the room air and the circulation water sent from the upper part of the tank through the gas-liquid mixing pipe, a separation tank of water for storing the gas-liquid mixed water discharged from the bottom of the mixing tank for gas-liquid contact and separating drain water from exhaust gas, a circulation pipe for circulating the drain water as circulation water from the separation tank of water to the gas-liquid mixing pipe, and a cleaned air supply pipe for supplying the exhaust gas as cleaned air from the separation tank of water to the object room of cleaning. In the mixing tank for gas-liquid contact, the room air and the circulation water are run along the surface of the plate member through the opening from the upper plate member to the lower plate member to generate droplets of water thereby to conduct gas-liquid mixing.SELECTED DRAWING: Figure 1

Description

本発明は、室内の空気環境の浄化を行うための空気浄化装置および空気浄化方法に関する。 The present invention relates to an air purification device and an air purification method for purifying an indoor air environment.

新型コロナ感染症の拡大に伴い、幼稚園、保育所、学校等の教育施設、介護施設等の高齢者対応施設、病院等の医療施設、ライブハウス等の演劇施設、飲食店、店舗等の商業施設、集会所等の公共施設等の室内の空気環境の浄化が求められている。 With the spread of the new corona infection, kindergartens, nursery schools, educational facilities such as schools, facilities for the elderly such as nursing care facilities, medical facilities such as hospitals, theater facilities such as live houses, restaurants, commercial facilities such as stores , Purification of the indoor air environment of public facilities such as meetinghouses is required.

室内の良好な環境を維持、改善するために、これまで例えば、窓や扉等を適宜開放して、外気との入れ替えを図る自然換気、強制的に送風機等で外気との入れ替えを図る機械換気、室内の空気を装置内で浄化し、循環する空気清浄装置を用いる換気等の方法がとられてきた。 In order to maintain and improve the good indoor environment, for example, natural ventilation that opens windows and doors as appropriate to replace with outside air, and mechanical ventilation that forcibly replaces with outside air with a blower, etc. , A method such as ventilation using an air purifying device that purifies the indoor air in the device and circulates has been adopted.

自然換気や機械換気の方法では、都会密集地等では、ウィルスの拡散や、騒音、臭気公害、冷暖房効率の低下等が指摘されており、今後社会問題に発展することが懸念されている。空気清浄装置を用いる換気では、換気効果や空気浄化効果の検証が必要とされている。 Regarding the methods of natural ventilation and mechanical ventilation, it has been pointed out that the spread of viruses, noise, odor pollution, deterioration of heating and cooling efficiency, etc. in densely populated urban areas, etc., and there is concern that they will develop into social problems in the future. Ventilation using an air purifier requires verification of the ventilation effect and air purification effect.

例えば、特許文献１には、吸気口に通じるとともに排気口に通じる内部空間を有した洗浄塔と、空気を前記吸気口から前記洗浄塔の内部空間に取り込んで前記排気口から前記洗浄塔の外に送り出すよう送風する送風機と、前記洗浄塔の内部空間に設置され、前記洗浄塔の内部空間内で水を散布するノズルと、を備え、前記ノズルから散布された水が前記洗浄塔内で前記送風機により送風された空気と接触する、空気浄化装置が記載されている。この空気浄化装置によって、フィルタの清掃、交換をほとんど殆ど必要とせず、取り込んだ空気からＮＯｘ、ＳＯｘ、ＮＨ_４等のガスや悪臭の元となるガスを除去して住宅内に取り込むことができ、さらに低出力の送風機でも空気を浄化することができるとしている。 For example, Patent Document 1 describes a scrubber having an internal space that leads to an intake port and an internal space that leads to an exhaust port, and air is taken into the internal space of the scrubber from the intake port and is taken from the exhaust port to the outside of the scrubber. A blower that blows air to the scrubber and a nozzle that is installed in the internal space of the scrubber and sprays water in the internal space of the scrubber. An air purifier that comes into contact with the air blown by the blower is described. With this air purification device, it is possible to remove gas such as NOx, SOx, _NH4 and gas that causes bad odor from the air taken in, and take it into the house with almost no need to clean or replace the filter. Furthermore, it is said that air can be purified even with a low-power blower.

しかし、特許文献１の空気浄化装置では、気液混合が不十分であり、室内のウィルス等除去対象物を十分に除去することができない。 However, the air purification device of Patent Document 1 is insufficient in gas-liquid mixing, and cannot sufficiently remove objects to be removed such as viruses in the room.

国際特許出願公開第２００８／０５３８７１号パンフレットInternational Patent Application Publication No. 2008/053871 Pamphlet

本発明の目的は、気液混合機能に優れ、常時室内の空気の浄化が可能であり、良好な室内環境を得ることができる空気浄化装置および空気浄化方法を提供することにある。 An object of the present invention is to provide an air purification device and an air purification method which are excellent in gas-liquid mixing function, can always purify indoor air, and can obtain a good indoor environment.

本発明は、換気装置により浄化対象の室内から吸引された室内空気を、循環水を注水しながら通すための気液混合配管と、棚段状に設置された、開口部を有する複数の板部材を備え、槽上部から前記気液混合配管を通して移送された前記室内空気と前記循環水とを混合するための気液接触混合槽と、前記気液接触混合槽の下部から排出された気液混合水を貯留し、排水と排気とに分離するための分離水槽と、前記分離水槽から前記排水を前記循環水として前記気液混合配管に循環するための循環手段と、前記分離水槽から前記排気を浄化空気として前記浄化対象の室内に供給するための浄化空気供給手段と、を備え、前記気液接触混合槽において、前記室内空気と前記循環水とを上段の前記板部材から前記開口部を通して下段の前記板部材まで板部材表面に沿って流して水滴を発生させることによって気液混合を行う、空気浄化装置である。 The present invention has a gas-liquid mixing pipe for passing indoor air sucked from a room to be purified by a ventilation device while injecting circulating water, and a plurality of plate members having openings installed in a shelf shape. A gas-liquid contact mixing tank for mixing the indoor air transferred from the upper part of the tank through the gas-liquid mixing pipe and the circulating water, and a gas-liquid mixing discharged from the lower part of the gas-liquid contact mixing tank. A separation water tank for storing water and separating it into drainage and exhaust, a circulation means for circulating the wastewater from the separation water tank to the gas-liquid mixing pipe as the circulating water, and the exhaust from the separation water tank. A purified air supply means for supplying purified air to the room to be purified is provided, and in the gas-liquid contact mixing tank, the indoor air and the circulating water are supplied from the upper plate member through the opening to the lower stage. It is an air purification device that mixes gas and liquid by flowing water droplets to the plate member along the surface of the plate member.

前記空気浄化装置において、前記板部材は、表面に１つ以上の凸部を有することが好ましい。 In the air purification device, it is preferable that the plate member has one or more protrusions on the surface.

前記空気浄化装置において、前記分離水槽から送液された前記排水に含まれる除去対象物の処理を行い、前記分離水槽に返送するための処理槽をさらに備えることが好ましい。 It is preferable that the air purification device further includes a treatment tank for treating the object to be removed contained in the wastewater sent from the separation water tank and returning the liquid to the separation water tank.

前記空気浄化装置において、前記気液混合配管における管内風速は、１０～２０ｍ／秒の範囲であることが好ましい。 In the air purification device, the in-pipe wind speed in the gas-liquid mixing pipe is preferably in the range of 10 to 20 m / sec.

前記空気浄化装置において、前記気液混合配管における前記循環水の注水量は、送風量の１／５０～１／５００の範囲であることが好ましい。 In the air purification device, the amount of water injected into the circulating water in the gas-liquid mixing pipe is preferably in the range of 1/50 to 1/500 of the amount of air blown.

本発明は、換気装置により浄化対象の室内から吸引された室内空気を、循環水を注水しながら気液混合配管を通す循環水混合工程と、棚段状に設置された、開口部を有する複数の板部材を備える気液接触混合槽において、前記気液接触混合槽の上部から前記気液混合配管を通して移送された前記室内空気と前記循環水とを混合する気液接触混合工程と、前記気液接触混合槽の下部から排出された気液混合水を分離水槽に貯留し、排水と排気とに分離する気液分離工程と、前記分離水槽から前記排水を前記循環水として前記気液混合配管に循環する循環工程と、前記分離水槽から前記排気を浄化空気として前記浄化対象の室内に供給する浄化空気供給工程と、を含み、前記気液接触混合槽において、前記室内空気と前記循環水とを上段の前記板部材から前記開口部を通して下段の前記板部材まで板部材表面に沿って流して水滴を発生させることによって気液混合を行う、空気浄化方法である。 The present invention has a circulating water mixing step in which indoor air sucked from a room to be purified by a ventilation device is passed through a gas-liquid mixing pipe while injecting circulating water, and a plurality of having openings installed in a shelf shape. In the gas-liquid contact mixing tank provided with the plate member, the gas-liquid contact mixing step of mixing the indoor air transferred from the upper part of the gas-liquid contact mixing tank through the gas-liquid mixing pipe and the circulating water, and the gas. A gas-liquid separation step in which the gas-liquid mixed water discharged from the lower part of the liquid contact mixing tank is stored in a separation water tank and separated into drainage and exhaust, and the gas-liquid mixing pipe using the drainage from the separation water tank as the circulating water. In the gas-liquid contact mixing tank, the indoor air and the circulating water are included. Is an air purification method in which gas-liquid mixing is performed by flowing water from the plate member in the upper stage to the plate member in the lower stage through the opening along the surface of the plate member to generate water droplets.

前記空気浄化方法において、前記板部材は、表面に１つ以上の凸部を有することが好ましい。 In the air purification method, it is preferable that the plate member has one or more protrusions on the surface.

前記空気浄化方法において、処理槽において前記分離水槽から送液された前記排水に含まれる除去対象物の処理を行い、前記分離水槽に返送する処理工程をさらに含むことが好ましい。 In the air purification method, it is preferable to further include a treatment step of treating the object to be removed contained in the wastewater sent from the separation water tank in the treatment tank and returning the liquid to the separation water tank.

前記空気浄化方法において、前記気液混合配管における管内風速は、１０～２０ｍ／秒の範囲であることが好ましい。 In the air purification method, the in-pipe wind speed in the gas-liquid mixing pipe is preferably in the range of 10 to 20 m / sec.

前記空気浄化方法において、前記気液混合配管における前記循環水の注水量は、送風量の１／５０～１／５００の範囲であることが好ましい。 In the air purification method, the amount of water injected into the circulating water in the gas-liquid mixing pipe is preferably in the range of 1/50 to 1/500 of the amount of air blown.

本発明によって、気液混合機能に優れ、常時室内の空気の浄化が可能であり、良好な室内環境を得ることができる空気浄化装置および空気浄化方法を提供することができる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide an air purification device and an air purification method which are excellent in gas-liquid mixing function, can constantly purify indoor air, and can obtain a good indoor environment.

本発明の実施形態に係る空気浄化装置の一例を示す概略構成図である。It is a schematic block diagram which shows an example of the air purification apparatus which concerns on embodiment of this invention.

本発明の実施の形態について以下説明する。本実施形態は本発明を実施する一例であって、本発明は本実施形態に限定されるものではない。 Embodiments of the present invention will be described below. The present embodiment is an example of carrying out the present invention, and the present invention is not limited to the present embodiment.

本発明の実施形態に係る空気浄化装置の一例の概略を図１に示し、その構成について説明する。空気浄化装置１は、換気装置１８により浄化対象の室内から吸引された室内空気を、循環水を注水しながら通すための気液混合配管１２と、棚段状に設置された、開口部５０を有する複数の板部材４４を備え、槽上部から気液混合配管１２を通して移送された室内空気と循環水とを混合するための気液接触混合槽１０と、気液接触混合槽１０の下部から排出された気液混合水を貯留し、排水と排気とに分離するための分離水槽１４と、分離水槽１４から排水を循環水として気液混合配管１２に循環するための循環手段として循環配管５２と、分離水槽１４から排気を適度の湿度を有する浄化空気として浄化対象の室内に供給するための浄化空気供給手段として浄化空気供給配管２８と、を備える。空気浄化装置１は、分離水槽１４から送液された排水に含まれる除去対象物の処理を行い、分離水槽１４に返送するための処理槽１６を備えてもよい。 An outline of an example of an air purification device according to an embodiment of the present invention is shown in FIG. 1, and its configuration will be described. The air purification device 1 has a gas-liquid mixing pipe 12 for passing the indoor air sucked from the room to be purified by the ventilation device 18 while injecting circulating water, and an opening 50 installed in a shelf shape. The gas-liquid contact mixing tank 10 for mixing the indoor air and the circulating water transferred from the upper part of the tank through the gas-liquid mixing pipe 12 and the gas-liquid contact mixing tank 10 are discharged from the lower part of the gas-liquid contact mixing tank 10. A separation water tank 14 for storing the combined gas-liquid mixed water and separating it into drainage and exhaust, and a circulation pipe 52 as a circulation means for circulating the wastewater from the separation water tank 14 to the gas-liquid mixing pipe 12 as circulating water. A purified air supply pipe 28 is provided as a purified air supply means for supplying the exhaust from the separated water tank 14 as purified air having an appropriate humidity into the room to be purified. The air purification device 1 may include a treatment tank 16 for treating the object to be removed contained in the wastewater sent from the separation water tank 14 and returning it to the separation water tank 14.

図１の空気浄化装置１において、例えば長方体形状の密閉された気液接触混合槽１０の上方に、気液混合配管１２が横設されており、気液接触混合槽１０の下方に、例えば長方体形状の密閉された分離水槽１４が設置されている。気液混合配管１２の一端には、浄化対象の室内から室内空気を吸気管２０から吸引して排気管２２から気液混合配管１２内に送り出すように送風する換気装置１８が設置されている。気液混合配管１２の他端は、閉じられており、気液混合配管１２の途中に設けられた排出口と気液接触混合槽１０の上面に設けられた取入口とは、配管３０により接続されている。気液接触混合槽１０の下面に設けられた排出口と分離水槽１４の上面に設けられた取入口とは、配管３２により接続されている。 In the air purification device 1 of FIG. 1, for example, a gas-liquid mixing pipe 12 is horizontally provided above a rectangular parallelepiped closed gas-liquid contact mixing tank 10, and below the gas-liquid contact mixing tank 10. For example, a rectangular parallelepiped sealed separated water tank 14 is installed. At one end of the gas-liquid mixing pipe 12, a ventilation device 18 is installed so as to suck indoor air from the room to be purified from the intake pipe 20 and send it out from the exhaust pipe 22 into the gas-liquid mixing pipe 12. The other end of the gas-liquid mixing pipe 12 is closed, and the discharge port provided in the middle of the gas-liquid mixing pipe 12 and the intake port provided on the upper surface of the gas-liquid contact mixing tank 10 are connected by the pipe 30. Has been done. The discharge port provided on the lower surface of the gas-liquid contact mixing tank 10 and the intake port provided on the upper surface of the separation water tank 14 are connected by a pipe 32.

分離水槽１４の上部には、浄化空気供給配管２８の一端が接続されている。浄化空気供給配管２８の途中と、浄化対象の室内の取入口とは、浄化空気供給配管４２により接続されている。浄化空気供給配管２８の他端は外部に開放されていてもよいし、閉じられていてもよい。浄化空気供給配管２８には、浄化空気供給配管４２の接続部付近に流路切替バルブ４０が設置されている。分離水槽１４の上部には、分離水槽１４から排気を浄化空気として外部へ排出するための浄化空気排出配管２６の一端が接続されていてもよい。浄化空気排出配管２６の他端は外部に開放されている。浄化空気排出配管２６には開閉バルブ３８が設置されている。 One end of the purified air supply pipe 28 is connected to the upper part of the separation water tank 14. The middle of the purified air supply pipe 28 and the intake in the room to be purified are connected by the purified air supply pipe 42. The other end of the purified air supply pipe 28 may be open to the outside or may be closed. In the purified air supply pipe 28, a flow path switching valve 40 is installed near the connection portion of the purified air supply pipe 42. One end of the purified air discharge pipe 26 for discharging the exhaust gas from the separated water tank 14 to the outside as purified air may be connected to the upper part of the separated water tank 14. The other end of the purified air discharge pipe 26 is open to the outside. An on-off valve 38 is installed in the purified air discharge pipe 26.

分離水槽１４の側面に設けられた排水口と処理槽１６の取水口とは、配管３４により接続され、処理槽１６の排水口と分離水槽１４の側面に設けられた取水口とは、配管３６により接続されている。分離水槽１４の内部には、排水を吸引、吐出できるように、循環手段として循環ポンプ２４が設置され、循環ポンプ２４の吐出口と、気液混合配管１２に設けられた取水口とは、循環配管５２により接続されている。 The drainage port provided on the side surface of the separation water tank 14 and the intake port of the treatment tank 16 are connected by a pipe 34, and the drainage port of the treatment tank 16 and the water intake port provided on the side surface of the separation water tank 14 are connected to the pipe 36. Is connected by. A circulation pump 24 is installed inside the separation water tank 14 as a circulation means so that drainage can be sucked and discharged, and the discharge port of the circulation pump 24 and the water intake port provided in the gas-liquid mixing pipe 12 circulate. It is connected by a pipe 52.

気液接触混合槽１０内には、例えばスリット状の開口部５０を有する複数の板部材４４が棚段状に設置されている。各板部材４４は、例えば長方体形状の気液接触混合槽１０の下面に対して互いに略平行になるように設置されている。各段の開口部５０は、そのすぐ下の段の開口部５０の位置と重ならないように設けられている。 In the gas-liquid contact mixing tank 10, for example, a plurality of plate members 44 having slit-shaped openings 50 are installed in a shelf-like manner. The plate members 44 are installed so as to be substantially parallel to the lower surface of the gas-liquid contact mixing tank 10 having a rectangular parallelepiped shape, for example. The opening 50 of each step is provided so as not to overlap the position of the opening 50 of the step immediately below the opening 50.

板部材４４は、表面に１つ以上の、好ましくは複数の凸部４８を有する。気液接触混合槽１０の底面の表面にも１つ以上の、好ましくは複数の凸部４８を有していてもよい。板部材４４の開口部５０の縁の少なくとも１つには、邪魔板４６が設置されていてもよい。 The plate member 44 has one or more, preferably a plurality of protrusions 48 on the surface. The surface of the bottom surface of the gas-liquid contact mixing tank 10 may also have one or more, preferably a plurality of convex portions 48. A baffle plate 46 may be installed at least one of the edges of the opening 50 of the plate member 44.

本実施形態に係る空気浄化方法および空気浄化装置１の動作について説明する。なお、図１における点線は、気液が接触する気液接触面５４を示す。 The air purification method and the operation of the air purification device 1 according to the present embodiment will be described. The dotted line in FIG. 1 indicates the gas-liquid contact surface 54 with which the gas-liquid contacts.

ウィルス等の除去対象物を含む浄化対象の室内空気は、換気装置１８により浄化対象の室内から吸気管２０を通して吸引され、排気管２２から気液混合配管１２内に一端側から他端側に向けて送り出されるように、例えば風速１０～２０ｍ／秒程度で送気される（室内空気吸引工程）。気液混合配管１２において、送り出された室内空気に、後述する循環水が循環配管５２を通して注水されながら（循環水混合工程）、配管３０を通して気液接触混合槽１０の上部から中へ噴流状態で移送される（移送工程）。このとき、気液混合配管１２の閉じられた他端を含む配管内壁への衝突によって、気液の混合が促進される。 The indoor air to be purified including the object to be removed such as a virus is sucked from the room to be purified by the ventilation device 18 through the intake pipe 20 and directed from one end side to the other end side in the gas-liquid mixing pipe 12 from the exhaust pipe 22. The air is sent out at a wind speed of, for example, about 10 to 20 m / sec (indoor air suction step). In the gas-liquid mixing pipe 12, while circulating water, which will be described later, is injected into the sent-out indoor air through the circulation pipe 52 (circulating water mixing step), the water-liquid contact mixing tank 10 is jetted from the upper part to the inside through the pipe 30. Transferred (transfer process). At this time, the gas-liquid mixing is promoted by the collision with the inner wall of the pipe including the closed other end of the gas-liquid mixing pipe 12.

気液接触混合槽１０内の棚段状に設置された各板部材４４の上方を空気が例えば風速１０～４０ｍ／秒以上で走り、板面に乱流を起こしながら、各板部材４４の表面を流れる水表面との接触面を増大させるとともに、水表面から無数の水滴を気中に巻き上げ、気液接触機会を大幅に増加させて、除去対象物を液中に巻き込みながら進んでいく（気液接触混合工程）。気液混合噴流は、次の下段の板部材４４の上に噴流状態で開口部５０を通して落下し、各段の板部材４４に沿って順次進んでいき、気液接触混合槽１０の下面に設けられた排出口から配管３２を通して、分離水槽１４の上面に設けられた取入口から分離水槽１４へ送られる。 Air runs above each plate member 44 installed in a shelf step in the gas-liquid contact mixing tank 10 at a wind speed of, for example, 10 to 40 m / sec or more, causing turbulent flow on the plate surface while causing a turbulent flow on the plate surface. In addition to increasing the contact surface with the water surface flowing through, innumerable water droplets are swirled into the air from the water surface, greatly increasing the chances of gas-liquid contact, and proceeding while entraining the object to be removed in the liquid (Qi). Liquid contact mixing step). The gas-liquid mixing jet falls on the next lower plate member 44 in a jet state through the opening 50, sequentially advances along the plate member 44 of each stage, and is provided on the lower surface of the gas-liquid contact mixing tank 10. It is sent to the separation water tank 14 from the intake port provided on the upper surface of the separation water tank 14 through the pipe 32 from the discharged outlet.

分離水槽１４において、気液接触混合槽１０の下部から排出された気液混合水が貯留され、下方の排水と上方の排気とに分離される（気液分離工程）。 In the separation water tank 14, the gas-liquid mixed water discharged from the lower part of the gas-liquid contact mixing tank 10 is stored and separated into a lower drainage and an upper exhaust (gas-liquid separation step).

分離水槽１４において分離された排水の一部は、循環ポンプ２４によって循環水として循環配管５２を通して気液混合配管１２に循環される（循環工程）。 A part of the wastewater separated in the separation water tank 14 is circulated as circulating water by the circulation pump 24 to the gas-liquid mixing pipe 12 through the circulation pipe 52 (circulation step).

除去対象物がウィルス等の場合は、排水を循環使用する間に時間経過とともに死滅する。水中でのウィルスの寿命は、例えば９０％殺菌で２４時間、９９％殺菌で７２時間とされているので、殺菌時間をそれ以上とすればよい。分離水槽１４から配管３４を通して排水の一部が処理槽１６に送液されて、処理槽１６において、送液された排水に含まれる除去対象物の処理が行われてもよい（処理工程）。処理槽１６において処理された排水は、配管３６を通して分離水槽１４に返送されてもよい。 If the object to be removed is a virus or the like, it will die over time while the wastewater is circulated and used. The life of the virus in water is, for example, 24 hours for 90% sterilization and 72 hours for 99% sterilization, so the sterilization time may be longer. A part of the wastewater may be sent from the separation water tank 14 to the treatment tank 16 through the pipe 34, and the treatment tank 16 may treat the removed object contained in the sent wastewater (treatment step). The wastewater treated in the treatment tank 16 may be returned to the separation water tank 14 through the pipe 36.

除去対象物が十分に低減または除去され、適度の湿度を有する浄化空気は、流路切替バルブ４０が分離水槽１４と浄化対象の室内との連通状態とされて、分離水槽１４から浄化空気供給配管２８、浄化空気供給配管４２を通して、浄化対象の室内へ供給される（浄化空気供給工程）。このとき、流路切替バルブ４０が分離水槽１４と浄化対象の室内と外部との連通状態とされて、浄化空気が外気と混合されて、浄化対象の室内へ供給されてもよい。 For purified air having an appropriate humidity after the object to be removed is sufficiently reduced or removed, the flow path switching valve 40 is in a state of communication between the separation water tank 14 and the room to be purified, and the purification air supply pipe is supplied from the separation water tank 14. 28, It is supplied to the room to be purified through the purified air supply pipe 42 (purified air supply step). At this time, the flow path switching valve 40 may be in a communication state between the separation water tank 14 and the room to be purified, and the purified air may be mixed with the outside air and supplied to the room to be purified.

除去対象物が十分に低減または除去された浄化空気は、開閉バルブ３８が開状態とされて、浄化空気排出配管２６を通して外部に排出されてもよい（浄化空気排出工程）。 The purified air from which the objects to be removed have been sufficiently reduced or removed may be discharged to the outside through the purified air discharge pipe 26 with the on-off valve 38 opened (purified air discharge step).

板部材４４の表面に１つ以上の、好ましくは複数の凸部４８を有すれば、風速によって流れるせん断水流にカルマン渦等によって乱れをさらに生じさせ、水表面の水滴化（例えば径ｒ≒０．０７５～０．１５０ｍｍ程度）が促進され、気液混合機能がさらに向上する。 If the surface of the plate member 44 has one or more, preferably a plurality of convex portions 48, the sheared water flow flowing by the wind speed is further disturbed by Karman vortices or the like, and the water surface becomes water droplets (for example, diameter r≈0). .075 to 0.150 mm) is promoted, and the gas-liquid mixing function is further improved.

各段において板部材４４の端部側等の壁面に気液混合噴流が、液分が壁面に沿って拡がる水域に衝突させて、気液衝突水塊５６を生じさせることによって、気液混合機能がさらに向上する。 A gas-liquid mixing function by causing a gas-liquid mixing jet to collide with a water area where liquids spread along the wall surface to form a gas-liquid collision water mass 56 on a wall surface such as the end side of the plate member 44 at each stage. Is further improved.

気液混合噴流は、次の下段に噴流状態で開口部５０を通して落下し、板部材４４上に略垂直に衝突し、気液混合機能がさらに向上する。 The gas-liquid mixing jet falls to the next lower stage in a jet state through the opening 50 and collides with the plate member 44 substantially vertically, further improving the gas-liquid mixing function.

このように、気液接触混合槽１０において、室内空気と循環水とを噴流状態で上段の板部材４４から開口部５０を通して下段の板部材４４まで板部材表面に沿って流して水滴剥離を発生させることによって気液混合を行う。気液混合噴流を上段の板部材４４から下段の板部材４４まで移送し、板部材４４の表面上や気液接触混合槽１０の内壁面に衝突し、乱れを生じさせて水塊を形成し、空気が連続的に衝突して気液混合を行い、除去対象物を液中に移相させて、多段で順次繰り返し処理を行い、室内空気中の除去対象物の除去処理を連続的に多段階に繰り返し行う。 In this way, in the gas-liquid contact mixing tank 10, water droplets are separated by flowing indoor air and circulating water along the surface of the plate member from the upper plate member 44 through the opening 50 to the lower plate member 44 in a jet state. Gas-liquid mixing is performed by allowing them to mix. The gas-liquid mixing jet is transferred from the upper plate member 44 to the lower plate member 44 and collides with the surface of the plate member 44 or the inner wall surface of the gas-liquid contact mixing tank 10 to cause turbulence and form a water mass. , Air continuously collides to perform gas-liquid mixing, the object to be removed is phase-shifted into the liquid, and the process is repeated sequentially in multiple stages to continuously remove the object to be removed in the indoor air. Repeat in stages.

換気装置１８により浄化対象の室内から吸引した室内空気をほぼ全量、空気浄化装置１に取り込み、各段の板部材４４上の水面と気液混合噴流との摩擦力を利用して、水滴剥離を発生させ、気液接触面を大幅に確保し、気液混合機能を大幅に向上することができる。 Almost all of the indoor air sucked from the room to be purified by the ventilation device 18 is taken into the air purification device 1, and water droplets are separated by using the frictional force between the water surface on the plate member 44 of each stage and the gas-liquid mixed jet. It can be generated, the air-liquid contact surface can be largely secured, and the air-liquid mixing function can be greatly improved.

気液混合配管１２を用いて室内空気と循環水とを混合してから、棚段状に設置された複数の板部材４４を備える気液接触混合槽１０内へ上部から噴流状態で供給することによって、特許文献１のように気液接触構造にノズルによって水を霧状に散布する構成に比べて、気液混合機能が大幅に向上し、ウィルス等の除去対象物の除去性能が大幅に向上する。例えば特許文献１の図１０の空気浄化装置１Ｈでは、ノズル１０Ｅから散布された水は気液接触構造２０Ｈの傾斜した板２５Ｈを通じて下流に流れ、吸気口３１Ｅから取り込まれた下方からの空気は送風機８Ｅにより吸い上げられる。特許文献１の図１０の空気浄化装置１Ｈでは、吸気口３１Ｅから室内の空気を取り込み、傾斜した板２５Ｈの上をノズル１０Ｅから散布された水とは逆の流れで気液接触を行うのに対して、本発明の実施形態に係る空気浄化装置１では、装置上段より、室内からの送風機等による風量を利用し、装置内の風速を例えば１０～４０ｍ／秒に維持できるように気流断面を確保して、水と気流との流速差が境界面に生じる摩擦力を利用して水から微細な水滴を発生させて、気流の中でその微細水滴が引き込まれ、気流の微細水滴濃度を多段階で高めて、気液接触効率を向上させ、気流中の微細な除去対象物を水側に捕捉するものである。また、特許文献１の図１０の空気浄化装置１Ｈでは、多段階の板２５Ｈで下段への開口断面を極端に絞り、水の溜まりを形成し、その中に気流を上昇させて気液接触機会を増大させるが、大幅な圧力損失を生じさせて、送風機８Ｅの性能が過大となり、またエリミネータ１１Ｅの圧力損失も懸念される。この圧力損失を回避する手段として、板２５Ｈの下段への開口面積を拡幅する方法も考えられるが、水の溜まりの形成が不可能になり、気液接触機会の確保は困難となるが、本発明の実施形態に係る空気浄化装置１では、各段での水滴を含む気流の速度が例えば１０～４０ｍ／秒が維持されて側壁等に衝突し、水塊が側面に沿って薄く形成されて、そこに後続の気流が衝突し、さらに気液接触が増大すると考えられる。さらに、特許文献１の図１０の空気浄化装置１Ｈでは、多段階の板２５Ｈで風速を増大させると、上方からの水の流れを阻害することが懸念される。 After mixing the indoor air and the circulating water using the gas-liquid mixing pipe 12, it is supplied from above into the gas-liquid contact mixing tank 10 provided with a plurality of plate members 44 installed in a shelf shape in a jet state. As a result, the gas-liquid mixing function is greatly improved and the removal performance of objects to be removed such as viruses is greatly improved as compared with the configuration in which water is sprayed into a gas-liquid contact structure by a nozzle as in Patent Document 1. do. For example, in the air purification device 1H of FIG. 10 of Patent Document 1, the water sprayed from the nozzle 10E flows downstream through the inclined plate 25H of the gas-liquid contact structure 20H, and the air from below taken in from the intake port 31E is a blower. It is sucked up by 8E. In the air purification device 1H of FIG. 10 of Patent Document 1, indoor air is taken in from the intake port 31E, and gas-liquid contact is performed on the inclined plate 25H with a flow opposite to the water sprayed from the nozzle 10E. On the other hand, in the air purification device 1 according to the embodiment of the present invention, the air flow section is formed from the upper stage of the device so that the air volume in the device can be maintained at, for example, 10 to 40 m / sec by using the air volume from the blower or the like from the room. Secure and use the frictional force generated at the interface between the flow velocity difference between the water and the airflow to generate fine water droplets from the water, and the fine water droplets are drawn into the airflow, increasing the concentration of the fine water droplets in the airflow. It is increased in stages to improve the gas-liquid contact efficiency and capture fine objects to be removed in the air flow on the water side. Further, in the air purification device 1H of FIG. 10 of Patent Document 1, the opening cross section to the lower stage is extremely narrowed by the multi-stage plate 25H to form a pool of water, and the air flow is raised in the pool to provide a gas-liquid contact opportunity. However, a large pressure loss is caused, the performance of the blower 8E becomes excessive, and there is a concern about the pressure loss of the eliminator 11E. As a means of avoiding this pressure loss, a method of widening the opening area to the lower stage of the plate 25H can be considered, but it becomes impossible to form a water pool and it becomes difficult to secure a gas-liquid contact opportunity. In the air purification device 1 according to the embodiment of the present invention, the velocity of the air flow including water droplets at each stage is maintained at, for example, 10 to 40 m / sec and collides with a side wall or the like, and a water mass is formed thinly along the side surface. It is considered that the subsequent airflow collides with it and the gas-liquid contact further increases. Further, in the air purification device 1H of FIG. 10 of Patent Document 1, if the wind speed is increased by the multi-stage plate 25H, there is a concern that the flow of water from above is obstructed.

新型コロナ感染症の拡大に伴い、小学校や幼稚園等の低学年の教育環境が著しく悪化している。幼少期の同世代間の幅広い交流は人格形成に必要不可欠なものであり、この交流を新型コロナ感染症のエアロゾル（飛沫核）による気中感染の懸念から制約が加わることを回避するために、本実施形態に係る空気浄化装置１によって室内の換気環境の改善を行うことができる。 With the spread of the new corona infection, the educational environment for lower grades such as elementary schools and kindergartens has deteriorated significantly. Extensive interaction between the same generation in early childhood is essential for personality formation, and to avoid limiting this interaction from concerns about airborne transmission from the aerosol of the new coronavirus infection. The air purification device 1 according to the present embodiment can improve the ventilation environment in the room.

一般に学校や幼稚園等の教室はそれぞれ独立しており、十分な換気環境の性能は確保されているが、窓の開放だけに依存していると、室内で発生した飛沫核は室外に拡散され、今後都市部の密集地区においては、騒音公害以上の社会問題の発生につながりかねないし、また室内に残存するエアロゾルからの気中感染や、ウィルス殺菌対策に使用する薬剤等による室内の人間等への２次被害も懸念される。 In general, classrooms such as schools and kindergartens are independent of each other, and sufficient ventilation environment performance is ensured. However, if only the opening of windows is relied on, the droplet nuclei generated indoors are diffused to the outside. In the future, in densely populated urban areas, it may lead to social problems beyond noise pollution, airborne infections from aerosols remaining in the room, and chemicals used for virus sterilization measures to humans in the room. Secondary damage is also a concern.

本実施形態に係る空気浄化装置１は、こうした懸念を解消するために、室外に設置した換気装置１８および空気浄化装置１により室内の空気を強制的に吸引し、気液混合してウィルス等の除去対象物を液側に捕捉して、室内の人間等に影響を極力与えないようにバックヤードで滅菌、除菌対策を行い、排水を気液混合水として循環利用することによって用水費、汚水処理費の削減を図ることができ、既存のエアコン、空気清浄器や換気設備との連結も可能にするものである。 In order to eliminate such concerns, the air purification device 1 according to the present embodiment forcibly sucks the indoor air by the ventilation device 18 and the air purification device 1 installed outdoors, mixes the air and liquid, and causes viruses and the like. Water costs and sewage are collected by capturing the object to be removed on the liquid side, sterilizing and disinfecting in the backyard so as not to affect people in the room as much as possible, and recycling the wastewater as air-liquid mixed water. It is possible to reduce the processing cost and connect it with existing air conditioners, air purifiers and ventilation equipment.

併せて、飲食施設、店舗、集会所、ライブハウス、居酒屋等、営業時間にコロナウィルス等の殺菌等のための閉所時間を随時設けることが困難な施設に、常時換気を行える空間を提供し、コロナウィルス等のウィルスの感染機会を、大幅に低下させるものである。 At the same time, we will provide a space for constant ventilation to facilities such as restaurants, stores, meetinghouses, live houses, taverns, etc., where it is difficult to set a closing time for sterilization of coronavirus etc. at any time during business hours. It greatly reduces the chance of infection with viruses such as coronavirus.

また、本実施形態に係る空気浄化装置１は、シンプル、コンパクト、ローコストを基本に、コロナウィルス等のウィルスを水溶液中で時間をかけて処理して、次亜塩素酸等の殺菌剤のミスト等による刺激臭や臭気を伴う空間洗浄を回避できるものであり、排水も循環利用することができる。また、分離水槽１４から浄化対象の室内へ供給される浄化空気は適度の湿度（例えば、湿度４０～６０％ＲＨ）を有するので、浄化対象の室内の乾燥を抑制し、室内の湿度を適度に（例えば、湿度５０～７０％ＲＨ、好ましくは湿度５０～６０％ＲＨ）維持することによって、コロナウィルス等のウィルスの感染を抑制することができる。 Further, the air purification device 1 according to the present embodiment is based on simple, compact and low cost, and treats a virus such as coronavirus in an aqueous solution over a long period of time to mist a bactericidal agent such as hypochlorous acid. It is possible to avoid space cleaning accompanied by irritating odors and odors, and wastewater can also be circulated. Further, since the purified air supplied from the separation water tank 14 to the room to be purified has an appropriate humidity (for example, a humidity of 40 to 60% RH), the drying of the room to be purified is suppressed and the humidity in the room is moderately adjusted. By maintaining (for example, humidity 50 to 70% RH, preferably humidity 50 to 60% RH), infection with a virus such as corona virus can be suppressed.

換気装置１８の排気管２２の風量は、例えば１００ｍ^３／分、管内風速で例えば１０～２０ｍ／秒程度であり、この風量を利用して、空気浄化装置１を用いてバックヤードでの空気浄化を行う。換気装置１８の管内風速は、１０～２０ｍ／秒の範囲であることが好ましい。換気装置１８の管内風速が１０ｍ／秒未満であると、気液混合が不十分となる場合があり、２０ｍ／秒を超えると、騒音等が発生する場合がある。換気装置１８の風量がほぼ全量、気液接触混合槽１０に取り込まれ、配管３０からの噴流の速度は、例えば１０～２０ｍ／秒程度となり、気液接触混合槽１０内の棚段状に設置された各板部材４４の上方を空気が例えば風速１０～４０ｍ／秒程度、好ましくは１０～２０ｍ／秒程度で流れる。 The air volume of the exhaust pipe 22 of the ventilation device 18 is, for example, 100 m ³ / min, and the in-pipe wind speed is, for example, about 10 to 20 m / sec. Using this air volume, the air purification device 1 is used to purify the air in the backyard. I do. The in-pipe wind speed of the ventilator 18 is preferably in the range of 10 to 20 m / sec. If the wind speed in the pipe of the ventilation device 18 is less than 10 m / sec, the gas-liquid mixing may be insufficient, and if it exceeds 20 m / sec, noise or the like may be generated. Almost all of the air volume of the ventilation device 18 is taken into the gas-liquid contact mixing tank 10, and the speed of the jet flow from the pipe 30 is, for example, about 10 to 20 m / sec, and the air volume is installed in a shelf step in the gas-liquid contact mixing tank 10. Air flows above each of the plate members 44 at a wind speed of, for example, about 10 to 40 m / sec, preferably about 10 to 20 m / sec.

循環水の注水量は、換気装置１８の送風量に対して、体積比で例えば、１／５０～１／５００の範囲であり、１／１００～１／５００の範囲であることが好ましく、１／１００～１／２００の範囲であることがより好ましい。循環水の注水量が換気装置１８の送風量に対して１／５０を超えると、気液混合が不十分となる場合があり、１／５００未満であると、気液接触が不十分となる場合がある。 The amount of circulating water injected is, for example, in the range of 1/50 to 1/500 and preferably in the range of 1/100 to 1/500 in terms of volume ratio with respect to the amount of air blown by the ventilation device 18. It is more preferably in the range of / 100 to 1/200. If the amount of circulating water injected exceeds 1/50 of the amount of air blown by the ventilation device 18, gas-liquid mixing may be insufficient, and if it is less than 1/500, gas-liquid contact will be insufficient. In some cases.

気液混合配管１２における配管３０の接続部（排出口）は、例えば、気液混合配管１２の閉じられた他端側に近い場所（例えば、気液混合配管１２の全長に対して、閉じられた他端側から１／１５～１／２０の範囲）に設けるとよい。 The connection portion (exhaust port) of the pipe 30 in the gas-liquid mixing pipe 12 is closed, for example, at a place near the closed other end side of the gas-liquid mixing pipe 12 (for example, with respect to the total length of the gas-liquid mixing pipe 12). It is preferable to provide it in the range of 1/15 to 1/20 from the other end side.

水面の乱れと風速との関連は、風速３ｍ／秒以上であれば、水面の粗度は形成される。換気用風量によるエネルギーは気液混合配管１２を通して、棚段状に設置された複数の板部材４４を備える気液接触混合槽１０内にほぼ全量取り込まれ、水面に粗度を起こさせ、水滴剥離発生が飛躍的に増加する。 As for the relationship between the turbulence of the water surface and the wind speed, if the wind speed is 3 m / sec or more, the roughness of the water surface is formed. Almost all of the energy from the ventilation air volume is taken into the gas-liquid contact mixing tank 10 provided with a plurality of plate members 44 installed in a shelf shape through the gas-liquid mixing pipe 12, causing roughness on the water surface and peeling of water droplets. Outbreaks increase dramatically.

それぞれの板部材４４間の距離（棚間隔）は、最適風速（例えば、１０～４０ｍ／秒）を確保できるように調整すればよく、例えば、５～２０ｃｍの範囲、好ましくは５～１０ｃｍの範囲とすればよい。 The distance (shelf spacing) between the plate members 44 may be adjusted so as to secure the optimum wind speed (for example, 10 to 40 m / sec), for example, in the range of 5 to 20 cm, preferably in the range of 5 to 10 cm. And it is sufficient.

板部材４４における壁面からの開口部５０の位置は、水塊の維持ができるように調整すればよく、例えば、板部材４４間の距離の２倍以上３倍以下とすればよい。 The position of the opening 50 from the wall surface of the plate member 44 may be adjusted so that the water mass can be maintained, and may be, for example, twice or more and three times or less the distance between the plate members 44.

板部材４４の大きさは、最適風速（例えば、１０～４０ｍ／秒）を確保できるように調整すればよく、例えば、板部材４４の幅方向（気液混合噴流の進行方向に対して交差する方向）は０．５～３．０ｍの範囲、好ましくは１．０～２．０ｍの範囲とすればよく、板部材４４の長さ方向（気液混合噴流の進行方向）は１．５～５ｍの範囲、好ましくは１．５～２．５ｍの範囲とすればよい。開口部５０の大きさ（面積）は、最適風速（例えば、１０～４０ｍ／秒）を確保できるように調整すればよく、例えば、板部材４４間（棚間）の幅方向（気液混合噴流の進行方向に対して交差する方向）の断面積と同程度とすればよい。開口部５０の面積が各段の棚間の断面積未満であると、気流の圧力損失が生じる場合があり、各段の棚間の断面積を超えると、装置が過大となる場合がある。 The size of the plate member 44 may be adjusted so as to secure an optimum wind speed (for example, 10 to 40 m / sec), and for example, intersects the width direction of the plate member 44 (the traveling direction of the gas-liquid mixed jet). The direction) may be in the range of 0.5 to 3.0 m, preferably 1.0 to 2.0 m, and the length direction of the plate member 44 (the traveling direction of the gas-liquid mixed jet) is 1.5 to. The range may be 5 m, preferably 1.5 to 2.5 m. The size (area) of the opening 50 may be adjusted so as to secure the optimum wind speed (for example, 10 to 40 m / sec), for example, in the width direction (gas-liquid mixed jet) between the plate members 44 (between shelves). It may be about the same as the cross-sectional area (direction intersecting with the traveling direction of). If the area of the opening 50 is less than the cross-sectional area between the shelves of each stage, pressure loss of airflow may occur, and if it exceeds the cross-sectional area between the shelves of each stage, the device may become excessive.

本実施形態に係る空気浄化装置１は、室内の空気の浄化に用いることができ、適用対象には特に制限はない。本実施形態に係る空気浄化装置１は、例えば、幼稚園、保育所、学校等の教育施設、老人ホーム、介護施設等の高齢者対応施設、病院等の医療施設、ライブハウス等の演劇施設、飲食店、店舗等の商業施設、集会所等の公共施設、オフィス、喫煙所、小規模工場、倉庫等の室内の空気の浄化に用いることができる。 The air purification device 1 according to the present embodiment can be used for purifying indoor air, and the application target is not particularly limited. The air purification device 1 according to the present embodiment is, for example, an educational facility such as a kindergarten, a nursery school, a school, a facility for the elderly such as an elderly home, a nursing facility, a medical facility such as a hospital, a theater facility such as a live house, and a restaurant. It can be used for purifying indoor air in commercial facilities such as shops and stores, public facilities such as meetinghouses, offices, smoking areas, small factories, and warehouses.

浄化対象の室内空気に含まれる除去対象物としては、特に制限はなく、コロナウィルス、インフルエンザウィルス等のウィルス、浮遊するカビ、大腸菌等の細菌、喫煙で発生する煙等の臭気物質、ＮＯｘ、ＳＯｘ等が挙げられる。 There are no particular restrictions on the objects to be removed contained in the indoor air to be purified, including viruses such as coronavirus and influenza virus, floating mold, bacteria such as Escherichia coli, odorous substances such as smoke generated by smoking, NOx, and SOx. And so on.

除去対象物がウィルスや細菌等の場合は、上記の通り、排水を循環使用する間に時間経過とともに死滅させればよい。除去対象物がウィルスや細菌等の場合、処理槽１６において、次亜塩素酸、過酢酸等の殺菌剤を添加して、ウィルスや細菌を滅菌、死滅させてもよいし、ヒータ等の加熱装置を設置して加熱処理により滅菌、死滅させてもよい。除去対象物の種類に応じて、分解剤によって分解処理を行ってもよいし、活性炭等の吸着剤によって吸着処理を行ってもよいし、ろ過処理等によって分離処理等を行ってもよい。 If the object to be removed is a virus, a bacterium, or the like, as described above, the wastewater may be killed over time while being circulated and used. When the object to be removed is a virus, a bacterium, or the like, a bactericidal agent such as hypochlorous acid or peracetic acid may be added in the treatment tank 16 to sterilize or kill the virus or the bacterium, or a heating device such as a heater. May be installed and sterilized and killed by heat treatment. Depending on the type of the object to be removed, the decomposition treatment may be carried out with a decomposition agent, the adsorption treatment may be carried out with an adsorbent such as activated carbon, or the separation treatment may be carried out by a filtration treatment or the like.

循環式の分離水槽１４の水面から、表層部に浮遊するウィルス等の除去対象物を浮上分離させて、処理槽１６において滅菌、死滅処理を行ってもよい。 An object to be removed such as a virus floating on the surface layer may be floated and separated from the water surface of the circulation type separation water tank 14 and sterilized and killed in the treatment tank 16.

気液接触混合槽１０、分離水槽１４、処理槽１６は、密閉式の槽であればよく、形状等に特に制限はない。材質は、金属、プラスチック等、特に制限はない。 The gas-liquid contact mixing tank 10, the separation water tank 14, and the treatment tank 16 may be closed-type tanks, and the shape and the like are not particularly limited. The material is not particularly limited, such as metal and plastic.

板部材４４は、例えば長方形の板状の部材であり、材質は、金属、プラスチック等、特に制限はない。板部材４４は、それぞれが互いに平行になるように設置されていてもよいし、気液混合噴流の進行する方向に向かって下がるように傾斜して設置されていてもよい。 The plate member 44 is, for example, a rectangular plate-shaped member, and the material is not particularly limited, such as metal or plastic. The plate members 44 may be installed so as to be parallel to each other, or may be installed so as to be inclined so as to be lowered toward the traveling direction of the gas-liquid mixed jet.

凸部４８は、板部材４４の水が流れる表面上に１つ以上、好ましくは複数設ければよい。凸部４８は、例えば、金属またはプラスチック等の複数の小口径の管を板部材４４の全幅に、気液混合噴流の進行方向に対して交差する方向に延びるように所定の間隔を設けて取り付けたものである。凸部４８の高さは、静止状態の水深以下であることが好ましく、静止状態の水深の２分の１以上、静止状態の水深以下であることがより好ましい。凸部４８の高さは、例えば、５～２０ｍｍの範囲である。凸部４８の高さが静止状態の水深の２分の１ｍｍ未満であると、気液混合効果が十分に得られない場合があり、静止状態の水深を超えると、水溶液の流れが著しく阻害される場合がある。凸部４８は、小口径の管の他に、例えば、三角柱、板状体等であってもよい。 One or more, preferably a plurality of convex portions 48 may be provided on the surface of the plate member 44 through which water flows. The convex portion 48 is attached, for example, by attaching a plurality of small-diameter pipes made of metal or plastic to the entire width of the plate member 44 at predetermined intervals so as to extend in a direction intersecting the traveling direction of the gas-liquid mixed jet. It is a thing. The height of the convex portion 48 is preferably not less than or equal to the water depth in the stationary state, and more preferably more than half of the water depth in the stationary state and not more than half the water depth in the stationary state. The height of the convex portion 48 is, for example, in the range of 5 to 20 mm. If the height of the convex portion 48 is less than half of the water depth in the stationary state, the gas-liquid mixing effect may not be sufficiently obtained, and if the height exceeds the water depth in the stationary state, the flow of the aqueous solution is significantly obstructed. May occur. The convex portion 48 may be, for example, a triangular prism, a plate-shaped body, or the like, in addition to a small-diameter pipe.

板部材４４を波形板とすることによって凸部４８を有するものとしてもよいし、板部材４４の表面に溝を形成することによって凸部４８を有するものとしてもよい。 The plate member 44 may have a convex portion 48 by forming a corrugated plate, or may have a convex portion 48 by forming a groove on the surface of the plate member 44.

板部材４４の開口部５０の縁の少なくとも１つに、邪魔板４６が設置されていてもよい。邪魔板４６を有することによって、気液混合機能をさらに向上することができる。邪魔板４６は、気液混合噴流の進行方向に交差するように設置されていればよい。 A baffle plate 46 may be installed at at least one of the edges of the opening 50 of the plate member 44. By having the baffle plate 46, the gas-liquid mixing function can be further improved. The obstruction plate 46 may be installed so as to intersect the traveling direction of the gas-liquid mixed jet.

分離水槽１４と処理槽１６との間の排水の循環は自然循環でもよいし、配管３４、配管３６に循環送液用のポンプを設置してもよい。 The circulation of the waste water between the separation water tank 14 and the treatment tank 16 may be natural circulation, or a pump for circulating liquid feeding may be installed in the pipe 34 and the pipe 36.

配管３０の径は、換気装置１８の送風量を気液接触混合槽１０において維持することができればよく、例えば、風速２０ｍ／秒を超えないような径とすればよい。 The diameter of the pipe 30 may be such that the amount of air blown by the ventilation device 18 can be maintained in the gas-liquid contact mixing tank 10, and the diameter may be set so as not to exceed the wind speed of 20 m / sec, for example.

多段式の空気浄化装置１によって、ウィルス等の除去対象物は液側に移相し、密閉下の施設のバックヤードで殺菌、滅菌処理等を行うので、殺菌剤の選定にあたっては、人間等への影響を考慮しなくてもよいので、殺菌効果の高い材料を選択することができる。密閉下での循環利用にも問題はない。 With the multi-stage air purification device 1, the object to be removed such as viruses is transferred to the liquid side, and sterilization, sterilization, etc. are performed in the backyard of the facility under hermetic control. Since it is not necessary to consider the influence of the virus, a material having a high bactericidal effect can be selected. There is no problem in recycling in a sealed environment.

換気に伴う近隣への感染被害については、バックヤードでウィルス等の除去対象物は循環水側にほとんど移相してしまうので、近隣にウィルス等の除去対象物が飛散することはほとんどなく、安全面の懸念がほとんどない。 Regarding the damage caused by infection to the neighborhood due to ventilation, the virus or other removal target is almost transferred to the circulating water side in the backyard, so the virus or other removal target is rarely scattered in the neighborhood and is safe. There are few face concerns.

排気の外気への放流と、浄化対象の室内との循環を適宜切替えることによって、密閉室内の上部に負圧空間を形成し、室内の空気を上向きに吸引させて、ウィルス等の除去対象物の拡散を抑制することができる。 By appropriately switching the circulation of the exhaust gas to the outside air and the room to be purified, a negative pressure space is formed in the upper part of the closed room, and the air in the room is sucked upward to remove the virus and other objects. Diffusion can be suppressed.

既存のエアコン、換気扇、空気清浄装置等の空調関係の他の装置と空気浄化装置１との組み合わせによって、より快適な換気環境の確保をすることができる。 A more comfortable ventilation environment can be ensured by combining the air purification device 1 with other air-conditioning-related devices such as an existing air conditioner, a ventilation fan, and an air purifier.

水面の乱れと風速との関連は、例えば風速３ｍ／秒あれば水面の粗度は形成される。換気用風量によるエネルギーは気液接触混合槽１０内に全量取り込まれ、板部材４４の水面に粗度を起こさせ、水滴剥離発生が飛躍的に増加する。 Regarding the relationship between the turbulence of the water surface and the wind speed, for example, if the wind speed is 3 m / sec, the roughness of the water surface is formed. All the energy from the ventilation air volume is taken into the gas-liquid contact mixing tank 10, causing roughness on the water surface of the plate member 44, and the occurrence of water droplet separation is dramatically increased.

（新型コロナウィルス対策の換気設備の検討）
新型コロナウィルスのエアロゾル感染を抑制するための最適換気量は、例えば、学校の教室等での換気装置の所要換気量Ｑを、７５ｍ^３／室、生徒２５人として、Ｑ＝２５人×３０ｍ^３／時人＝７５０ｍ^３／時である。 (Examination of ventilation equipment for new coronavirus measures)
The optimum ventilation volume for suppressing aerosol infection of the new coronavirus is, for example, the required ventilation volume Q of the ventilation device in a school classroom, etc., 75 m ³ / room, 25 students, Q = 25 people x 30 m ³ / Time person = 750m ³ / hour.

換気装置１８の送風量は１００ｍ^３／分として、換気容量Ｑａ＝１００ｍ^３／分×６０分＝６０００ｍ^３／時であり、装置１基でカバーできる教室数Ｒは、Ｒ＝６０００ｍ^３／時÷７５０ｍ^３＝１２室、生徒数Ｎ＝１２室×２５人＝３００人、普通規模の小学校では２基あれば十分である。 Assuming that the ventilation volume of the ventilation device 18 is 100 m ³ / min, the ventilation capacity Qa = 100 m ³ / min x 60 minutes = 6000 m ³ / hour, and the number of classrooms R that can be covered by one device is R = 6000 m ³ / hour ÷. 750m ³ = 12 rooms, number of students N = 12 rooms x 25 people = 300 people, 2 units are enough for a normal-sized elementary school.

気液混合に要する用水は、循環利用であり、用水使用量、排水処理量を最小限とすることができる。用水量は、毎分換気量の例えば、１／１００～１／２００程度とすればよい。 The irrigation water required for gas-liquid mixing is recycled, and the amount of irrigation water used and the amount of wastewater treated can be minimized. The amount of water used may be, for example, about 1/100 to 1/200 of the ventilation volume per minute.

新型コロナウィルス対策用の換気設備として、以下の通り検討した。 We examined the following as ventilation equipment for the new coronavirus countermeasures.

検討条件対象の室内の総床面積：１２０ｍ^２（小規模施設）および１０００ｍ^２（大規模施設）
くしゃみ等による吐き出す飛沫の粒径ｒ１：ｒ１＞５μｍ、落下速度：３０～８０ｃｍ／秒
飛沫核（コロナウィルスを多く含む飛沫）の粒径ｒ２：ｒ２≦５μｍ、落下速度：０．０６～０．１５ｃｍ／秒
新型コロナウィルスの粒径：０．１μｍ以下
上下閉塞空間での水面での風速１０ｍ／秒以上で発生する水滴剥離の水滴径：０．０７５～０．１５ｍｍ Total floor area of the room under consideration: 120m ² (small-scale facility) and 1000m ² (large-scale facility)
Particle size r1: r1> 5 μm of droplets spit out due to sneezing, drop speed: 30-80 cm / sec Particle size r2: r2 ≦ 5 μm of droplet nucleus (droplet containing a large amount of coronavirus), drop speed: 0.06 to 0. 15 cm / sec Particle size of the new coronavirus: 0.1 μm or less Water droplet diameter of water droplet peeling that occurs at a wind speed of 10 m / sec or more on the water surface in the upper and lower closed spaces: 0.075 to 0.15 mm

［建築基準法による必要換気量］
ケース１複合店舗（小規模施設：１２０ｍ^２）
Ｑ＝１２０ｍ^２×２０ｍ^３／時人÷３ｍ^２／人＝８００ｍ^３／時＝１３．３ｍ^３／分
換気用送風量は、１３．３ｍ^３／分÷０．７５≒１８ｍ^３／分（ロス率２５％として） [Required ventilation volume according to the Building Standard Law]
Case 1 Complex store (small facility: 120m ² )
Q = 120m ² x 20m ³ / hour person ÷ 3m ² / person = 800m ³ / hour = 13.3m ³ / minute Ventilation air volume is 13.3m ³ / minute ÷ 0.75 ≒ 18m ³ / minute (loss) (As a rate of 25%)

ケース２学校建築等（大規模施設：１０００ｍ^２）
Ｑ＝１０００ｍ^２×２０ｍ^３／時人÷５ｍ^２／人＝４０００ｍ^３／時＝６６．６ｍ^３／分
換気用送風量は、６６．６ｍ^３／分÷０．７５≒９０ｍ^３／分（ロス率２５％として） Case 2 School building, etc. (Large-scale facility: 1000m ² )
Q = 1000m ² x 20m ³ / hour person ÷ 5m ² / person = 4000m ³ / hour = 66.6m ³ / minute Ventilation air volume is 66.6m ³ / minute ÷ 0.75 ≒ 90m ³ / minute (loss) (As a rate of 25%)

［浮遊する飛沫核を換気扇に吸引する上昇速度］
Ｖ１２０＝１８ｍ^３／分÷１２０ｍ^２＝０．１５ｍ／分＝０．２５ｃｍ／秒＞飛沫核落下速度０．１５ｃｍ／秒
→ 飛沫核はほとんど落下しないと考えられる。
Ｖ１０００＝９０ｍ^３／分÷１０００ｍ^２＝０．０９ｍ／分＝０．１５ｃｍ／秒≧飛沫核落下速度０．１５ｃｍ／秒
→ 飛沫核はほとんど落下しないと考えられる。 [Rising speed of sucking floating droplet nuclei into a ventilation fan]
V120 = 18m ³ / min ÷ 120m ² = 0.15m / min = 0.25cm / sec> Splash nucleus falling speed 0.15cm / sec → It is considered that the droplet nucleus hardly falls.
V1000 = 90m ³ / min ÷ 1000m ² = 0.09m / min = 0.15cm / sec ≧ Drop nucleus fall speed 0.15cm / sec → It is considered that the droplet nucleus hardly falls.

上記結果より、換気装置１８によって飛沫核（例えば粒径５μｍ以下、落下速度１．５ｃｍ／秒以下）の落下速度以上の上昇流を室内に発生させることによって、室内に放出された飛沫核はほとんどすべて換気装置１８の吸気管２０に吸引され、室外で本実施形態に係る空気浄化装置１にて気液混合し、ウィルスを水溶液中で処理し、排水を循環利用して、水中で死滅させることによって、低減、除去することができる。 From the above results, most of the droplet nuclei released into the room are generated by the ventilation device 18 to generate an ascending flow of the droplet nuclei (for example, particle size of 5 μm or less, drop speed of 1.5 cm / sec or less) in the room. All are sucked into the intake pipe 20 of the ventilation device 18, air-liquid mixed by the air purification device 1 according to the present embodiment outdoors, the virus is treated in the aqueous solution, and the wastewater is circulated and killed in the water. Can be reduced or eliminated.

また、多段式の空気浄化装置１内で、板部材４４の表面で例えば風速１０～４０ｍ／秒で水面と気液混合噴流との摩擦力で発生する水滴（例えば水滴径０．０７５～０．１５ｍｍ）との接触や装置内の壁面での気液衝突による気液接触によってウィルスが接触し水側に捕捉されるので、ウィルスが外気へ放出されたり、室内に循環されることはほとんどないと考えられる。臭気を発生させる成分の多くは、ウィルスと同様に液中に取り込まれ、また殺菌剤の使用も屋外の密閉空間で行われるため、室内に流入することはほとんどない。浄化対象の室内において常時連続換気が可能であり、室内でウィルスの浮遊滞留を低減し、飛沫核による感染拡大を回避することができる。 Further, in the multi-stage air purification device 1, water droplets (for example, water droplet diameter 0.075 to 0.) Generated on the surface of the plate member 44 by the frictional force between the water surface and the gas-liquid mixed jet at a wind speed of 10 to 40 m / sec. Since the virus comes into contact with the water side due to contact with 15 mm) or gas-liquid contact due to gas-liquid collision on the wall surface inside the device, the virus is rarely released to the outside air or circulated indoors. Conceivable. Most of the components that generate odors are taken into the liquid like viruses, and since the disinfectant is also used in an outdoor enclosed space, it rarely flows into the room. Continuous ventilation is possible in the room to be purified, and it is possible to reduce the floating retention of the virus in the room and avoid the spread of infection due to the droplet nuclei.

１空気浄化装置、１０気液接触混合槽、１２気液混合配管、１４分離水槽、１６処理槽、１８換気装置、２０吸気管、２２排気管、２４循環ポンプ、２６浄化空気排出配管、２８，４２浄化空気供給配管、３０，３２，３４，３６配管、３８開閉バルブ、４０流路切替バルブ、４４板部材、４６邪魔板、４８凸部、５０開口部、５２循環配管、５４気液接触面、５６気液衝突水塊。 1 Air purification device, 10 Gas-liquid contact mixing tank, 12 Gas-liquid mixing pipe, 14 Separation water tank, 16 Treatment tank, 18 Ventilation device, 20 Intake pipe, 22 Exhaust pipe, 24 Circulation pump, 26 Purified air discharge pipe, 28, 42 Purified air supply pipe, 30, 32, 34, 36 pipe, 38 open / close valve, 40 flow path switching valve, 44 plate member, 46 obstruction plate, 48 convex part, 50 opening, 52 circulation pipe, 54 air-liquid contact surface , 56 Gas-liquid collision water mass.

Claims

換気装置により浄化対象の室内から吸引された室内空気を、循環水を注水しながら通すための気液混合配管と、
棚段状に設置された、開口部を有する複数の板部材を備え、槽上部から前記気液混合配管を通して移送された前記室内空気と前記循環水とを混合するための気液接触混合槽と、
前記気液接触混合槽の下部から排出された気液混合水を貯留し、排水と排気とに分離するための分離水槽と、
前記分離水槽から前記排水を前記循環水として前記気液混合配管に循環するための循環手段と、
前記分離水槽から前記排気を浄化空気として前記浄化対象の室内に供給するための浄化空気供給手段と、
を備え、
前記気液接触混合槽において、前記室内空気と前記循環水とを上段の前記板部材から前記開口部を通して下段の前記板部材まで板部材表面に沿って流して水滴を発生させることによって気液混合を行うことを特徴とする空気浄化装置。 A gas-liquid mixing pipe for passing the indoor air sucked from the room to be purified by the ventilation device while injecting circulating water,
A gas-liquid contact mixing tank for mixing the indoor air and the circulating water transferred from the upper part of the tank through the gas-liquid mixing pipe, which is provided with a plurality of plate members having openings installed in a shelf shape. ,
A separation water tank for storing the gas-liquid mixed water discharged from the lower part of the gas-liquid contact mixing tank and separating it into drainage and exhaust gas.
A circulation means for circulating the wastewater from the separation water tank to the gas-liquid mixing pipe as the circulating water.
Purified air supply means for supplying the exhaust gas from the separated water tank as purified air into the room to be purified.
Equipped with
In the gas-liquid contact mixing tank, gas-liquid mixing is performed by flowing the indoor air and the circulating water from the upper plate member through the opening to the lower plate member along the surface of the plate member to generate water droplets. An air purification device characterized by performing.

請求項１に記載の空気浄化装置であって、
前記板部材は、表面に１つ以上の凸部を有することを特徴とする空気浄化装置。 The air purification device according to claim 1.
The plate member is an air purification device having one or more convex portions on the surface thereof.

請求項１または２に記載の空気浄化装置であって、
前記分離水槽から送液された前記排水に含まれる除去対象物の処理を行い、前記分離水槽に返送するための処理槽をさらに備えることを特徴とする空気浄化装置。 The air purification device according to claim 1 or 2.
An air purification device comprising a treatment tank for treating an object to be removed contained in the wastewater sent from the separation water tank and returning the liquid to the separation water tank.

請求項１～３のいずれか１項に記載の空気浄化装置であって、
前記気液混合配管における管内風速は、１０～２０ｍ／秒の範囲であることを特徴とする空気浄化装置。 The air purification device according to any one of claims 1 to 3.
An air purification device characterized in that the in-pipe wind speed in the gas-liquid mixing pipe is in the range of 10 to 20 m / sec.

請求項１～４のいずれか１項に記載の空気浄化装置であって、
前記気液混合配管における前記循環水の注水量は、送風量の１／５０～１／５００の範囲であることを特徴とする空気浄化装置。 The air purification device according to any one of claims 1 to 4.
An air purification device characterized in that the amount of water injected into the circulating water in the gas-liquid mixing pipe is in the range of 1/50 to 1/500 of the amount of air blown.

換気装置により浄化対象の室内から吸引された室内空気を、循環水を注水しながら気液混合配管を通す循環水混合工程と、
棚段状に設置された、開口部を有する複数の板部材を備える気液接触混合槽において、前記気液接触混合槽の上部から前記気液混合配管を通して移送された前記室内空気と前記循環水とを混合する気液接触混合工程と、
前記気液接触混合槽の下部から排出された気液混合水を分離水槽に貯留し、排水と排気とに分離する気液分離工程と、
前記分離水槽から前記排水を前記循環水として前記気液混合配管に循環する循環工程と、
前記分離水槽から前記排気を浄化空気として前記浄化対象の室内に供給する浄化空気供給工程と、
を含み、
前記気液接触混合槽において、前記室内空気と前記循環水とを上段の前記板部材から前記開口部を通して下段の前記板部材まで板部材表面に沿って流して水滴を発生させることによって気液混合を行うことを特徴とする空気浄化方法。 A circulating water mixing process in which the indoor air sucked from the room to be purified by the ventilation device is passed through the gas-liquid mixing pipe while injecting circulating water.
In a gas-liquid contact mixing tank provided with a plurality of plate members having openings, which are installed in a shelf shape, the indoor air and the circulating water transferred from the upper part of the gas-liquid contact mixing tank through the gas-liquid mixing pipe. A gas-liquid contact mixing step that mixes with
A gas-liquid separation step in which the gas-liquid mixed water discharged from the lower part of the gas-liquid contact mixing tank is stored in a separation water tank and separated into drainage and exhaust.
A circulation step of circulating the wastewater from the separation water tank to the gas-liquid mixing pipe as the circulating water.
The purified air supply step of supplying the exhaust gas from the separated water tank as purified air to the room to be purified,
Including
In the gas-liquid contact mixing tank, gas-liquid mixing is performed by flowing the indoor air and the circulating water from the upper plate member through the opening to the lower plate member along the surface of the plate member to generate water droplets. An air purification method characterized by performing.

請求項６に記載の空気浄化方法であって、
前記板部材は、表面に１つ以上の凸部を有することを特徴とする空気浄化方法。 The air purification method according to claim 6.
The air purification method, wherein the plate member has one or more convex portions on the surface.

請求項６または７に記載の空気浄化方法であって、
処理槽において前記分離水槽から送液された前記排水に含まれる除去対象物の処理を行い、前記分離水槽に返送する処理工程をさらに含むことを特徴とする空気浄化方法。 The air purification method according to claim 6 or 7.
An air purification method comprising a treatment step of treating an object to be removed contained in the wastewater sent from the separation water tank in the treatment tank and returning the liquid to the separation water tank.

請求項６～８のいずれか１項に記載の空気浄化方法であって、
前記気液混合配管における管内風速は、１０～２０ｍ／秒の範囲であることを特徴とする空気浄化方法。 The air purification method according to any one of claims 6 to 8.
An air purification method characterized in that the in-pipe wind speed in the gas-liquid mixing pipe is in the range of 10 to 20 m / sec.

請求項６～９のいずれか１項に記載の空気浄化方法であって、
前記気液混合配管における前記循環水の注水量は、送風量の１／５０～１／５００の範囲であることを特徴とする空気浄化方法。 The air purification method according to any one of claims 6 to 9.
A method for purifying air, wherein the amount of water injected into the circulating water in the gas-liquid mixing pipe is in the range of 1/50 to 1/500 of the amount of air blown.