JP3653930B2

JP3653930B2 - Air cleaner

Info

Publication number: JP3653930B2
Application number: JP14751097A
Authority: JP
Inventors: 範幸米野; 祐福田; 克彦宇野; 寛竹山; 邦弘菅; 宏明藤井; 邦男荻田; 充米山
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1997-06-05
Filing date: 1997-06-05
Publication date: 2005-06-02
Anticipated expiration: 2017-06-05
Also published as: JPH10337436A

Description

【０００１】
【発明の属する技術分野】
本発明は室内空気中の煙草の臭気や建材、壁、家具から発生するアルデヒドなどの揮発性有機化合物、燃焼機などから発生する一酸化炭素などの無機ガスで代表される汚染ガスを焼却、分解して除去する空気清浄機に関するものである。
【０００２】
【従来の技術】
従来よりこの種の機能を有する空気清浄機としては、活性炭などの脱臭フィルタに空気中の臭い等の汚染ガスを吸着除去するもの、また触媒やオゾンによって汚染ガスを分解する構成のものがあった。
【０００３】
さらに、脱臭フィルターを初期性能に再生する空気清浄機として特開平６−１５４３０２号公報に記載されている様なものが知られている。この装置は図１０に示すように空気中の臭いを除去するための吸着式脱臭フィルタ１と送風手段２を備えた空気清浄機において、前記吸着式脱臭フィルタ１が臭い吸着によって性能低下が進む過程で、性能の初期化に近づけるため機体内でフィルタを中心とした循環サイクルを構成して、この循環フィルタには、循環用送風部３、ヒータ等の空気加熱部４、オゾン発生器とオゾン分解フィルタからなる臭い分解手段５を備え、加熱による臭い再放出→オゾンによる臭い分解→オゾン除去のサイクルで脱臭フィルタをリフレッシュする。
【０００４】
また、吸着型熱分解触媒によって脱臭フィルターを初期性能に再生する空気清浄機として特開平８−５２３２５号公報に記載されている様なものが知られている。この装置は図１１に示すように、吸着型熱分解触媒層を表面に設けた脱臭ヒーター６と送風用ファン７からなり、送風用ファンにより吸着型熱分解触媒層に悪臭成分を吸着させ、次にヒータによって吸着型熱分解触媒層を活性温度まで加熱し吸着していた臭気成分を酸化分解し吸着型熱分解触媒層の吸着能力を再生するものである。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記従来の脱臭フィルタを設けただけの空気清浄器では長時間使用すると脱臭フィルタの極細孔が臭い成分で塞がるため吸着脱臭能力が低下する。このため、一定期間ごとにフィルタの交換が必要であった。
【０００６】
また、オゾン方式、触媒方式で連続的に汚染ガスを処理するには家庭用空気清浄機であっても１ｍ３／分〜４ｍ３／分の処理風量が必要のため規模の大きな装置が必要であった。
【０００７】
また、特開平６−１５４３０２号公報のような方式では、循環路が必要であり装置が大きくなり、熱容量が大きくなるため加熱による分解方式や、触媒による分解に対しては処理時間が長くなるとともに、多くの電力量が必要となる。
【０００８】
さらに特開平８−５２３２５号公報に記載されている様な方式では、小型のヒータの場合、表面に担持できる吸着型熱分解触媒層の量が限られるため、建材、壁、家具から連続的に発生するアルデヒドなどの揮発性有機化合物を除去するためには頻繁に再生を行わなければならない。また、吸着型熱分解触媒の脱着温度が熱分解の触媒活性温度より低い物質では、ヒータの通電直後、脱着のみが起こり臭いが発生する課題があった。
【０００９】
【課題を解決するための手段】
本発明は上記課題を解決するために、空気中のホルムアルデヒドやトルエンなどの揮発性有機化合物からなる汚染ガスを選択的かつ発生量を十分に吸着するゼオライト等の吸着材でできた吸着手段と、前記吸着手段を加熱して吸着した汚染ガスを脱離させる電気ヒータ等の脱着手段と、前記吸着手段から脱着した汚染ガスを分解する表面温度が５５０℃以上の電気発熱体からなる分解手段を本体の通風路に配置し、送風手段によって吸着手段に汚染ガスを含む空気を送風する構成とし、通風路中の吸着手段と分解手段の間に絞り部を設け、前記分解手段は前記吸着手段よりも重力方向で上方に位置して分解室中に設け、前記分解室は吸気口と排気口を有し、かつ前記排気口が前記分解室の天井面よりも下に位置させて前記通風路中に設けたものである。
【００１０】
上記発明によれば、部屋の空気に含まれる汚染ガスを除去する吸着モードの際は、送風手段のみを駆動し、本体外の空気を吸着手段に導き、吸着手段に吸着させる。吸着手段に所定量の汚染ガスが吸着すると、次に再生モードに入る。送風手段を停止または送風量を減じた後、分解手段を駆動し、脱着手段を駆動することで汚染ガスは吸着手段から脱着し、分解手段である高温の電気発熱体に接触し瞬間的に酸化され揮発性有機化合物や一酸化炭素は水や二酸化炭素に分解される。吸着手段は元の状態に再生されるので再び汚染ガスを吸着することができ、吸着手段の交換などのメンテナンスを不要とすることができる。
【００１１】
【発明の実施の形態】
本発明は空気中のホルムアルデヒドやトルエンなどの揮発性有機化合物からなる汚染ガスを選択的かつ発生量を十分に吸着するコルゲート形状にゼオライト等の吸着材でできた吸着手段と、前記吸着手段を加熱して吸着した汚染ガスを脱離させる電気発熱体等の脱着手段と、前記吸着手段から脱離した汚染ガスを分解する表面温度が５５０℃以上の電気発熱体からなる分解手段を本体の通風路に配置し、ファン等の送風手段によって吸着手段に汚染ガスを含む空気を送風する構成とし、通風路中の吸着手段と分解手段の間に絞り部を設け、前記分解手段は前記吸着手段よりも重力方向で上方に位置して分解室中に設け、前記分解室は吸気口と排気口を有し、かつ前記排気口が前記分解室の天井面よりも下に位置させて前記通風路中に設けたものである。
【００１２】
上記発明によれば、部屋の空気に含まれる汚染ガスを除去する吸着モードの際は、前記送風手段のみを駆動し、本体外の空気を前記吸着手段に導き、吸着手段に吸着させる。吸着手段に所定量の汚染ガスが吸着すると、次に再生モードに入る。送風手段を停止または送風量を減じた後、分解手段を駆動し、脱着手段を駆動することで汚染ガスは吸着手段から脱着し、分解手段である高温の電気発熱体に接触し瞬間的に酸化され揮発性有機化合物や一酸化炭素は水や二酸化炭素に分解される。吸着手段は元の状態に再生されるので再び汚染ガスを吸着することができ、吸着手段の交換などのメンテナンスを不要とすることができる。
【００１３】
また、通風路中の吸着手段と分解手段の間に絞り部を設けたので、分解手段を小型にできるため、電気発熱体の単位面積当たりの発熱量が大きくなり、同じ消費電力で電気発熱体や触媒の温度をより高温にできるため、再生モードで吸着手段から脱着した汚染ガスの酸化能力が大きくでき、再生時の臭いを抑えることができる。
【００１４】
また、通風路中に、吸気口と排気口を持ち排気口が天井面よりも下にある分解室を設け、分解室中に分解手段を設置したので、再生モードで吸着手段から脱着した汚染ガスが吸気口から分解室中に入り、高温の電気発熱体や触媒で加熱され上昇気流となり分解室の天井面から排気口へ向かう流れを生じる事から、分解室で高温に滞留している時間が長くなり、再生モードで吸着手段から脱着した汚染ガスの酸化能力が大きくでき、再生時の臭いを抑える事ができる。
【００１５】
また、分解手段を吸着手段よりも重力方向で上方に設置したので、脱着過程で発生した高温の汚染ガスは浮力で重力方向上方向に上昇してくるため、汚染ガスを効率よく分解手段で分解することができる。
【００１６】
また、分解手段としてパンチング板に白金等の触媒を担持する構成においては吸着モードで、ホルムアルデヒドのように常温で触媒による酸化反応を起こす物質を吸着し、再生モードで吸着手段から脱着した汚染ガスを水や二酸化炭素に分解することができる。
【００１７】
さらに、分解手段が電気発熱体と白金等の触媒の場合は、再生モードで電気発熱体によって、触媒温度が活性温度の１９０℃以上になるように触媒を加熱し、吸着手段から脱着した汚染ガスを触媒表面で水や二酸化炭素に分解することができる。
【００１８】
また、分解手段が触媒を担持した電気発熱体の場合は分解手段の熱容量が小さいため触媒を電気発熱体で間接的に加熱するより短時間に触媒温度が活性温度の１９０℃以上にすることができ再生初期の臭いを抑える事ができる。
【００１９】
さらに、分解手段がチタニア等の半導体からなる光触媒と紫外線灯のような波長が４００ｎｍの紫外線照射手段からなる場合、再生モードで吸着手段から脱着した汚染ガスは、熱分解ではなく、光触媒作用で二酸化炭素に分解することができ再生時の温度上昇を抑えることができる。
【００２０】
【実施例】
（実施例１）
図１は本発明の実施例１の空気清浄機の断面図である。１０は通風路１１を有する本体であり、前記通風路１１には空気中のホルムアルデヒドやトルエンなどの揮発性有機化合物からなる汚染ガスを選択的に吸着するコルゲート形状にゼオライト等の吸着材でできた吸着手段１２と、前記吸着手段１２を吸着材の脱着温度である２００℃加熱して吸着した汚染ガスを脱着させる電気ヒータ等の脱着手段１３と、前記吸着手段１２から脱着した汚染ガスを分解する表面温度が５５０℃以上の電気発熱体１４からなる分解手段１５を配置し、ファン等の送風手段１６によって前記吸着手段１２に汚染ガスを含む本体１０外の空気を送風する構成としたものである。
【００２１】
上記発明によれば、部屋の空気に含まれる汚染ガスを除去する吸着モードの際は、前記送風手段１６のみを駆動し、本体外の空気を前記吸着手段１２に導き、吸着手段１２に吸着させる。吸着手段１２に所定量の汚染ガスが吸着すると、次に再生モードに入る。送風手段１６を停止または送風量を減じた後、分解手段１５を駆動し、脱着手段１３を駆動することで汚染ガスは吸着手段１２の温度上昇とともに吸着手段１２から脱着、浮力によって上昇する。次に分解手段１５である高温の電気発熱体１４に接触し瞬間的に（表１）に示すような５５０℃以上となり揮発性有機化合物は水や二酸化炭素に熱分解される。吸着手段１２は元の状態に再生されるので再び汚染ガスを吸着することができ、吸着手段の交換などのメンテナンスを不要とすることができる。
【００２２】
【表１】

【００２３】
なお、吸着手段１２が独立しているため、家具や建材から発生する揮発性有機化合物のように室内で常に発生しているようなものでも吸着材の大きさを最適に設定できる。
【００２４】
なお、図１に示すように分解手段１５を吸着手段１２よりも重力方向で上方に設置した構成では、脱着過程で発生した高温の汚染ガスは浮力で重力方向上方向に上昇してくるため、汚染ガスを効率よく分解手段１５で分解することができる。
【００２５】
なお、脱着手段１３としては真空ポンプのような減圧手段を用いても同様の効果が得られる。
【００２６】
（実施例２）
図２は、本発明の実施例２の空気清浄機の断面図である。
【００２７】
実施例１と異なる点は分解手段１７として、パンチング板に白金等の貴金属を担持した触媒１８を使用したところである。
【００２８】
上記構成においては吸着モードで、ホルムアルデヒドのように常温で触媒による酸化反応を起こす物質を選択的に吸着する。次に再生モードで吸着手段１２から脱離した汚染ガスを触媒１８で水や二酸化炭素に低消費電力で分解することができる。
【００２９】
（実施例３）
図３は、本発明の実施例３の空気清浄機の断面図である。
【００３０】
実施例１と異なる点は分解手段１９が電気発熱体２０とパンチング板に白金等の貴金属を担持した触媒２１としたところである。
【００３１】
吸着モード終了後の再生モードでは、電気発熱体２０によって、触媒温度が活性温度の１９０℃以上になるように触媒２１を加熱し、脱着手段１３を駆動し吸着手段１２から脱着した汚染ガスを触媒２１表面に導く。（表２）に示すような触媒の活性温度以上ではホルムアルデヒドやトルエンなどの揮発性有機化合物からなる汚染ガスは熱分解が起こり、少ない消費電力で水や二酸化炭素に分解することができる。
【００３２】
【表２】

【００３３】
（実施例４）
図４は、本発明の実施例４の空気清浄機の断面図であり、図５は図４の分解手段の拡大図である。
【００３４】
実施例１と異なる点は、分解手段２２が電気発熱体２３表面に白金等の貴金属を担持した触媒２４を担持したところにある。
【００３５】
上記構成において吸着モード終了後の再生モードでは、触媒２４と電気発熱体２３が一体化しており分解手段２２の熱容量が小さいため触媒を電気発熱体で間接的に加熱するより短時間に触媒温度が活性温度の１９０℃以上にすることができ再生初期の臭いを抑えることができる。
【００３６】
（実施例５）
図６は、本発明の実施例５の空気清浄機の断面図である。
【００３７】
実施例１と異なる点は、分解手段２５をパンチング板に白金等の貴金属を担持したチタニア等の半導体を担持した光触媒２６と紫外線灯のような波長が４００ｎｍの紫外線照射手段２７としたところである。
【００３８】
吸着モード終了後の再生モードでは、吸着手段から脱着した汚染ガスは、熱分解ではなく、光触媒作用で二酸化炭素に分解することができ再生時の温度上昇を抑える事ができる。
【００３９】
（実施例６）
図７は、本発明の実施例６の空気清浄機の断面図である。
【００４０】
実施例１と異なる点は、通風路１１中の吸着手段１２と分解手段１５の間に絞り部２８を設けたところである。
【００４１】
吸着モード終了後の再生モードでは、吸着手段１２から脱着した汚染ガスは浮力によって通風路１１を上昇するが、絞り部によって流れが絞られ、分解手段１５に導かれる。上記構成では分解手段１５は小型にできるため、電気発熱体１４の単位面積当たりの発熱量が大きくなり、同じ消費電力で電気発熱体や触媒の温度をより高温にできるため、再生モードで吸着手段１２から脱着した汚染ガスの酸化能力が大きくでき、再生時の臭いをより抑えることができる。
【００４２】
なお、分解手段１５は、電気発熱体と触媒または触媒を担持した電気発熱体であっても同様の効果を得ることができる。
【００４３】
（実施例７）
図８は、本発明の実施例７の空気清浄機の断面図であり、図９は図８の分解室の拡大断面図である。
【００４４】
実施例１と異なる点は、通風路１１中に、吸気口２９と排気口３０を持ち前記排気口３０が天井面３１よりも下にある分解室３２を設け、前記分解室３２中に分解手段１５を設置したところにある。
【００４５】
上記構成では、吸着モード終了後の再生モードでは、吸着手段１２から脱着した汚染ガス３３は浮力によって通風路１１を上昇し吸気口２９から分解室３２中に入り、高温の電気発熱体１４からなる分解手段１５で加熱され矢印で示す上昇気流３４となり分解室の天井面から排気口へ向かう流れ３５を生じる事から、分解室３１で高温に滞留している時間が長くなり、汚染ガスの酸化能力が大きくでき、再生時の臭いを抑える事ができる。
【００４６】
なお、分解手段１５は、電気発熱体と触媒または触媒を担持した電気発熱体であっても同様の効果を得ることができる。
【００４７】
【発明の効果】
以上説明したように本発明の空気清浄機は、以下に述べる効果を有する物である。
【００４８】
（１）脱着手段により吸着手段から汚染ガスを脱着し、高温の電気発熱体からなる分解手段で揮発性有機化合物を熱分解することによって、吸着手段は元の状態に再生されるので再び汚染ガスを吸着することができ、吸着手段の交換などのメンテナンスを不要とする空気清浄機を実現できる。
【００４９】
（２）分解手段として触媒を備えた構成においては、吸着手段から脱着したホルムアルデヒドのように常温で触媒による酸化反応を起こす汚染ガスを水や二酸化炭素に分解することができる。
【００５０】
（３）分解手段が電気発熱体と白金等の触媒の場合は、再生モードで電気発熱体によって、触媒温度が活性温度となるよう加熱することで吸着手段から脱着した汚染ガスを熱分解できるので、少ない消費電力でメンテナンスを不要とする空気清浄機を実現できる。
【００５１】
（４）分解手段が触媒を担持した電気発熱体の場合は短時間に触媒温度が活性温度の１９０℃以上にすることができ再生初期の臭いを抑えることができる。
【００５２】
（５）分解手段が光触媒と紫外線照射手段からなる場合、光触媒作用で二酸化炭素に分解することができ再生時の温度上昇を抑えることができる。
【００５３】
（６）通風路中の吸着手段と分解手段の間に絞り部を設けたので、電気発熱体の単位面積当たりの発熱量が大きくなり、再生時の臭いを抑えることができる。
【００５４】
（７）通風路中に、吸気口と排気口を持ち排気口が天井面よりも下にある分解室を設け、分解室中に分解手段を設置したので、分解室で高温に滞留している時間が長くなり、再生時の臭いを抑えることができる。
【００５５】
（８）分解手段を吸着手段よりも重力方向で上方に設置したので、脱着過程で発生した高温の汚染ガスは浮力で重力方向上方向に上昇してくるため、汚染ガスを効率よく分解手段で分解することができる。
【図面の簡単な説明】
【図１】本発明の実施例１の空気清浄機の断面図
【図２】本発明の実施例２の空気清浄機の断面図
【図３】本発明の実施例３の空気清浄機の断面図
【図４】本発明の実施例４の空気清浄機の断面図
【図５】同空気清浄機の分解手段の拡大図
【図６】本発明の実施例５の空気清浄機の断面図
【図７】本発明の実施例６の空気清浄機の断面図
【図８】本発明の実施例７の空気清浄機の断面図
【図９】同空気清浄機の分解室の拡大図断面図
【図１０】従来の空気清浄機の断面図
【図１１】従来の空気清浄機の断面図
【符号の説明】
１０本体
１１通風路
１２吸着手段
１３脱着手段
１４，２０，２３電気発熱体
１５，１７，１９，２２分解手段
１６送風手段
１８触媒
２１触媒
２４触媒
２６光触媒
２７紫外線照射手段
２８絞り部
２９吸気口
３０排気口
３１天井面
３２分解室[0001]
BACKGROUND OF THE INVENTION
The present invention incinerates and decomposes odors of cigarettes in indoor air, volatile organic compounds such as aldehyde generated from building materials, walls, furniture, and inorganic gases such as carbon monoxide generated from combustors. It is related with the air cleaner removed.
[0002]
[Prior art]
Conventionally, as an air purifier having this type of function, there is one that adsorbs and removes pollutant gases such as odors in the air on a deodorizing filter such as activated carbon, and one that decomposes pollutant gases with a catalyst or ozone. .
[0003]
Further, as an air cleaner for regenerating the deodorizing filter to the initial performance, there is known an air purifier described in JP-A-6-154302. As shown in FIG. 10, this apparatus is an air purifier having an adsorption deodorizing filter 1 for removing odors in the air and an air blowing means 2, and the adsorption deodorizing filter 1 undergoes a process in which the performance decreases due to odor adsorption. In order to bring the performance closer to initialization, a circulation cycle centered on a filter is configured in the machine body. The circulation filter includes a circulation air blower 3, an air heating unit 4 such as a heater, an ozone generator and ozone decomposition. Odor decomposition means 5 comprising a filter is provided, and the deodorizing filter is refreshed in a cycle of odor re-emission by heating → odor decomposition by ozone → ozone removal.
[0004]
Further, as an air purifier that regenerates a deodorizing filter to an initial performance by using an adsorption-type thermal decomposition catalyst, one described in Japanese Patent Laid-Open No. 8-52325 is known. As shown in FIG. 11, this apparatus comprises a deodorizing heater 6 provided with an adsorption-type pyrolysis catalyst layer on the surface and a blower fan 7. The blower fan adsorbs malodorous components to the adsorption-type pyrolysis catalyst layer, In addition, the adsorption-type pyrolysis catalyst layer is heated to an activation temperature by a heater to oxidatively decompose the adsorbed odor component to regenerate the adsorption ability of the adsorption-type pyrolysis catalyst layer.
[0005]
[Problems to be solved by the invention]
However, in the case of using the above-mentioned conventional air purifier with only the deodorizing filter, the adsorption / deodorizing ability is lowered because the pores of the deodorizing filter are blocked with odorous components when used for a long time. For this reason, it is necessary to replace the filter at regular intervals.
[0006]
In addition, in order to continuously treat polluted gases using ozone and catalyst systems, a large-scale apparatus was required even for household air purifiers because a processing air volume of 1 m3 / min to 4 m3 / min was required. .
[0007]
Further, in the method as disclosed in Japanese Patent Laid-Open No. 6-154302, a circulation path is required, the apparatus becomes large, and the heat capacity increases, so that the treatment time for the decomposition method by heating and the decomposition by the catalyst becomes longer. A lot of power is required.
[0008]
Furthermore, in the method as described in JP-A-8-52325, in the case of a small heater, the amount of the adsorption-type pyrolysis catalyst layer that can be supported on the surface is limited. Regeneration must be performed frequently to remove volatile organic compounds such as aldehydes that are generated. In addition, when the desorption temperature of the adsorption-type thermal decomposition catalyst is lower than the catalytic activation temperature of the thermal decomposition, there is a problem that immediately after the heater is energized, only desorption occurs and odor is generated.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides an adsorption means made of an adsorbent such as zeolite that selectively adsorbs a generation amount of pollutant gas composed of volatile organic compounds such as formaldehyde and toluene in the air, and Desorption means such as an electric heater for desorbing contaminated gas adsorbed by heating the adsorption means, and decomposition means comprising an electric heating element having a surface temperature of 550 ° C. or more for decomposing the contaminated gas desorbed from the adsorption means Arranged in the ventilation path, and the air containing pollutant gas is blown to the adsorption means by the blowing means, and a constriction is provided between the adsorption means and the decomposition means in the ventilation path, and the decomposition means is more than the adsorption means. Located in the direction of gravity and provided in the decomposition chamber, the decomposition chamber has an intake port and an exhaust port, and the exhaust port is positioned below the ceiling surface of the decomposition chamber in the ventilation path provided Tamo It is.
[0010]
According to the above invention, in the adsorption mode for removing the pollutant gas contained in the room air, only the air blowing means is driven, the air outside the main body is guided to the adsorption means, and is adsorbed by the adsorption means. When a predetermined amount of contaminated gas is adsorbed on the adsorbing means, the regeneration mode is entered next. After stopping the air blowing means or reducing the air flow rate, the decomposition means is driven, and the desorption means is driven, so that the pollutant gas is desorbed from the adsorption means and comes into contact with the high-temperature electric heating element, which is the decomposition means, and instantly oxidizes. Volatile organic compounds and carbon monoxide are decomposed into water and carbon dioxide. Since the adsorption means is regenerated to the original state, the contaminated gas can be adsorbed again, and maintenance such as replacement of the adsorption means can be eliminated.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to an adsorbing means made of an adsorbent such as zeolite in a corrugated shape that selectively adsorbs a pollutant gas composed of volatile organic compounds such as formaldehyde and toluene in the air, and heats the adsorbing means. A desorption means such as an electric heating element for desorbing the adsorbed pollutant gas and an electric heating element having a surface temperature of 550 ° C. or higher for decomposing the polluted gas desorbed from the adsorbing means And the air containing pollutant gas is blown to the adsorbing means by the air blowing means such as a fan, and a throttle part is provided between the adsorbing means and the decomposing means in the ventilation path, and the decomposing means is more than the adsorbing means. Located in the direction of gravity and provided in the decomposition chamber, the decomposition chamber has an intake port and an exhaust port, and the exhaust port is positioned below the ceiling surface of the decomposition chamber in the ventilation path provided Tamo It is.
[0012]
According to the above invention, in the adsorption mode for removing the pollutant gas contained in the room air, only the air blowing means is driven, the air outside the main body is guided to the adsorption means, and is adsorbed by the adsorption means. When a predetermined amount of contaminated gas is adsorbed on the adsorbing means, the regeneration mode is entered next. After stopping the air blowing means or reducing the air flow rate, the decomposition means is driven, and the desorption means is driven, so that the pollutant gas is desorbed from the adsorption means and comes into contact with the high-temperature electric heating element, which is the decomposition means, and instantly oxidizes. Volatile organic compounds and carbon monoxide are decomposed into water and carbon dioxide. Since the adsorption means is regenerated to the original state, the contaminated gas can be adsorbed again, and maintenance such as replacement of the adsorption means can be eliminated.
[0013]
Further, since there is provided a throttle portion between the suction means and the separating means in the air passage, for as possible out of the decomposition unit in a small amount of heat generated increases per unit area of the electric heating element, electric heating with the same power consumption Since the temperature of the body and the catalyst can be made higher, the ability to oxidize the pollutant gas desorbed from the adsorption means in the regeneration mode can be increased, and the smell during regeneration can be suppressed.
[0014]
In addition, since a disassembly chamber with an intake port and an exhaust port in the ventilation path and an exhaust port below the ceiling surface is provided, and the disassembly means is installed in the decomposition chamber, the polluted gas desorbed from the adsorption means in the regeneration mode Enters the decomposition chamber from the intake port, is heated by a high-temperature electric heating element or catalyst, and becomes a rising airflow, creating a flow from the ceiling surface of the decomposition chamber to the exhaust port. The oxidization capability of the polluted gas desorbed from the adsorption means in the regeneration mode can be increased, and the odor during regeneration can be suppressed.
[0015]
In addition, since the decomposition means is installed above the adsorption means in the direction of gravity, the hot pollutant gas generated during the desorption process rises upward in the direction of gravity due to buoyancy, so the pollution gas is efficiently decomposed by the decomposition means. can do.
[0016]
Also, in a configuration in which a catalyst such as platinum is supported on a punching plate as a decomposition means, an adsorption mode is used to adsorb a substance that causes an oxidation reaction by a catalyst at room temperature, such as formaldehyde, and a polluted gas desorbed from the adsorption means in a regeneration mode. It can be decomposed into water and carbon dioxide.
[0017]
Further, when the decomposition means is an electric heating element and a catalyst such as platinum, the contaminated gas desorbed from the adsorption means by heating the catalyst so that the catalyst temperature becomes 190 ° C. or higher of the activation temperature in the regeneration mode. Can be decomposed into water and carbon dioxide on the catalyst surface.
[0018]
In the case where the decomposition means is an electric heating element carrying a catalyst, the heat capacity of the decomposition means is small, so that the catalyst temperature may be increased to 190 ° C. or higher of the activation temperature in a shorter time than when the catalyst is indirectly heated by the electric heating element. And can suppress the smell of the initial stage of playback.
[0019]
Further, when the decomposition means comprises a photocatalyst made of a semiconductor such as titania and an ultraviolet irradiation means having a wavelength of 400 nm such as an ultraviolet lamp, the pollutant gas desorbed from the adsorption means in the regeneration mode is not thermally decomposed but is oxidized by photocatalysis. It can be decomposed into carbon and temperature rise during regeneration can be suppressed.
[0020]
【Example】
(Example 1)
1 is a cross-sectional view of an air cleaner according to a first embodiment of the present invention. Reference numeral 10 denotes a main body having a ventilation path 11, and the ventilation path 11 is made of an adsorbent such as zeolite in a corrugated shape that selectively adsorbs a pollutant gas composed of volatile organic compounds such as formaldehyde and toluene in the air. The adsorption means 12, the desorption means 13 such as an electric heater for desorbing the adsorbed contaminant gas by heating the adsorbent means 200 ° C. which is the desorption temperature of the adsorbent, and the contaminated gas desorbed from the adsorption means 12 are decomposed. A disassembling means 15 comprising an electric heating element 14 having a surface temperature of 550 ° C. or more is arranged, and air outside the main body 10 containing pollutant gas is blown to the adsorption means 12 by a blowing means 16 such as a fan. .
[0021]
According to the above invention, in the adsorption mode for removing the pollutant gas contained in the room air, only the air blowing means 16 is driven, the air outside the main body is guided to the adsorption means 12 and adsorbed by the adsorption means 12. . When a predetermined amount of contaminated gas is adsorbed on the adsorbing means 12, the regeneration mode is entered next. After stopping the air blowing means 16 or reducing the air flow rate, the decomposing means 15 is driven and the desorption means 13 is driven so that the pollutant gas is desorbed from the adsorption means 12 and rises by buoyancy as the temperature of the adsorption means 12 rises. Next, it comes into contact with the high-temperature electric heating element 14 as the decomposition means 15 and instantaneously reaches 550 ° C. or higher as shown in (Table 1), and the volatile organic compound is thermally decomposed into water and carbon dioxide. Since the adsorbing means 12 is regenerated to the original state, the contaminated gas can be adsorbed again, and maintenance such as replacement of the adsorbing means can be made unnecessary.
[0022]
[Table 1]

[0023]
In addition, since the adsorption | suction means 12 are independent, even if what is always generate | occur | producing indoors like the volatile organic compound which generate | occur | produces from furniture and building materials, the magnitude | size of an adsorbent can be set optimally.
[0024]
As shown in FIG. 1, in the configuration in which the decomposition means 15 is installed above the adsorption means 12 in the gravity direction, the high-temperature pollutant gas generated in the desorption process rises upward in the gravity direction by buoyancy. The contaminated gas can be efficiently decomposed by the decomposition means 15.
[0025]
The same effect can be obtained by using a decompression means such as a vacuum pump as the desorption means 13.
[0026]
(Example 2)
FIG. 2 is a cross-sectional view of the air cleaner according to the second embodiment of the present invention.
[0027]
The difference from Example 1 is that a catalyst 18 having a punching plate supporting a noble metal such as platinum is used as the decomposition means 17.
[0028]
In the above configuration, in the adsorption mode, a substance that causes an oxidation reaction by a catalyst at room temperature, such as formaldehyde, is selectively adsorbed. Next, the contaminated gas desorbed from the adsorption means 12 in the regeneration mode can be decomposed into water or carbon dioxide by the catalyst 18 with low power consumption.
[0029]
(Example 3)
FIG. 3 is a cross-sectional view of the air cleaner according to the third embodiment of the present invention.
[0030]
The difference from the first embodiment is that the decomposition means 19 is an electric heating element 20 and a catalyst 21 having a punching plate carrying a noble metal such as platinum.
[0031]
In the regeneration mode after completion of the adsorption mode, the electric heating element 20 heats the catalyst 21 so that the catalyst temperature becomes 190 ° C. or higher of the activation temperature, drives the desorption means 13, and removes the polluted gas desorbed from the adsorption means 12. 21 Lead to the surface. Above the activation temperature of the catalyst as shown in Table 2, the polluted gas composed of volatile organic compounds such as formaldehyde and toluene undergoes thermal decomposition and can be decomposed into water and carbon dioxide with low power consumption.
[0032]
[Table 2]

[0033]
(Example 4)
4 is a sectional view of an air cleaner according to a fourth embodiment of the present invention, and FIG. 5 is an enlarged view of the disassembling means of FIG.
[0034]
The difference from Example 1 is that the decomposition means 22 carries a catalyst 24 carrying a noble metal such as platinum on the surface of the electric heating element 23.
[0035]
In the above-described configuration, in the regeneration mode after completion of the adsorption mode, the catalyst 24 and the electric heating element 23 are integrated, and the thermal capacity of the decomposition means 22 is small, so that the catalyst temperature is reduced in a shorter time than indirectly heating the catalyst with the electric heating element. The activation temperature can be raised to 190 ° C. or higher, and the odor at the initial stage of regeneration can be suppressed.
[0036]
(Example 5)
FIG. 6 is a cross-sectional view of an air cleaner according to a fifth embodiment of the present invention.
[0037]
The difference from the first embodiment is that the decomposition means 25 is a photocatalyst 26 carrying a semiconductor such as titania carrying a noble metal such as platinum on a punching plate and an ultraviolet irradiation means 27 having a wavelength of 400 nm such as an ultraviolet lamp.
[0038]
In the regeneration mode after completion of the adsorption mode, the polluted gas desorbed from the adsorption means can be decomposed into carbon dioxide by photocatalysis rather than thermal decomposition, and the temperature rise during regeneration can be suppressed.
[0039]
(Example 6)
FIG. 7 is a cross-sectional view of an air cleaner according to a sixth embodiment of the present invention.
[0040]
The difference from the first embodiment is that a throttle portion 28 is provided between the suction means 12 and the disassembling means 15 in the ventilation path 11.
[0041]
In the regeneration mode after completion of the adsorption mode, the polluted gas desorbed from the adsorption unit 12 rises in the ventilation path 11 by buoyancy, but the flow is throttled by the throttle unit and guided to the decomposition unit 15. In the above configuration, since the disassembling means 15 can be reduced in size, the amount of heat generated per unit area of the electric heating element 14 can be increased, and the temperature of the electric heating element and catalyst can be increased with the same power consumption. The oxidizing ability of the polluted gas desorbed from 12 can be increased, and the odor during regeneration can be further suppressed.
[0042]
The decomposition means 15 can obtain the same effect even if it is an electric heating element and a catalyst or an electric heating element carrying a catalyst.
[0043]
(Example 7)
8 is a cross-sectional view of an air cleaner according to a seventh embodiment of the present invention, and FIG. 9 is an enlarged cross-sectional view of the decomposition chamber of FIG.
[0044]
The difference from the first embodiment is that a decomposition chamber 32 having an intake port 29 and an exhaust port 30 in the ventilation path 11 and having the exhaust port 30 below the ceiling surface 31 is provided in the ventilation path 11. 15 is in place.
[0045]
In the above configuration, in the regeneration mode after the end of the adsorption mode, the polluted gas 33 desorbed from the adsorption means 12 rises through the ventilation path 11 by buoyancy and enters the decomposition chamber 32 from the intake port 29, and consists of the high-temperature electric heating element 14. Since it is heated by the decomposition means 15 and becomes an ascending air flow 34 shown by an arrow, a flow 35 from the ceiling surface of the decomposition chamber to the exhaust port is generated. Can be increased and the odor during reproduction can be suppressed.
[0046]
The decomposition means 15 can obtain the same effect even if it is an electric heating element and a catalyst or an electric heating element carrying a catalyst.
[0047]
【The invention's effect】
As described above, the air cleaner of the present invention has the following effects.
[0048]
(1) By desorbing the pollutant gas from the adsorbing means by the desorbing means and thermally decomposing the volatile organic compound by the decomposition means comprising a high-temperature electric heating element, the adsorbing means is regenerated to its original state. Can be adsorbed, and an air cleaner that does not require maintenance such as replacement of the adsorbing means can be realized.
[0049]
(2) In a configuration provided with a catalyst as the decomposition means, a pollutant gas that causes an oxidation reaction by the catalyst at room temperature, such as formaldehyde desorbed from the adsorption means, can be decomposed into water or carbon dioxide.
[0050]
(3) When the decomposition means is an electric heating element and a catalyst such as platinum, the pollutant gas desorbed from the adsorption means can be thermally decomposed by heating the electric heating element so that the catalyst temperature becomes the active temperature in the regeneration mode. An air purifier that requires less power and does not require maintenance can be realized.
[0051]
(4) When the decomposition means is an electric heating element carrying a catalyst, the catalyst temperature can be raised to the activation temperature of 190 ° C. or higher in a short time, and the odor at the initial stage of regeneration can be suppressed.
[0052]
(5) When the decomposing means comprises a photocatalyst and an ultraviolet irradiation means, it can be decomposed into carbon dioxide by photocatalytic action, and an increase in temperature during regeneration can be suppressed.
[0053]
(6) is provided with the throttle portion between the suction means and the separating means in the air passage, the amount of heat generated per unit area of the electrical heating element is increased, it is possible to suppress the odor of the playback.
[0054]
(7) in the air passage, the decomposition chamber outlet having an exhaust port and the intake port is below the ceiling surface is provided, since the installed decomposing means during the decomposition chamber, remaining in the high temperature cracking chamber The time becomes longer and the odor during playback can be suppressed.
[0055]
(8) Since the decomposition means is disposed above gravity direction than the adsorption means, because the contamination gas having a high temperature generated in the desorption process will come to rise in the gravity direction improvement direction by buoyancy, the contaminated gas efficiently separating means Can be disassembled.
[Brief description of the drawings]
1 is a cross-sectional view of an air cleaner according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of an air cleaner according to a second embodiment of the present invention. FIG. 3 is a cross-sectional view of an air cleaner according to a third embodiment of the present invention. FIG. 4 is a sectional view of an air cleaner according to a fourth embodiment of the present invention. FIG. 5 is an enlarged view of a disassembling means of the air cleaner. FIG. 6 is a sectional view of an air cleaner according to a fifth embodiment of the present invention. 7 is a sectional view of an air cleaner according to a sixth embodiment of the present invention. FIG. 8 is a sectional view of an air cleaner according to the seventh embodiment of the present invention. FIG. 9 is an enlarged sectional view of a decomposition chamber of the air cleaner. Fig. 10 Cross section of a conventional air purifier [Fig. 11] Cross section of a conventional air purifier [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Main body 11 Ventilation path 12 Adsorption means 13 Desorption means 14, 20, 23

Electric heating element

15, 17, 19, 22 Decomposition means 16 Blower means 18 Catalyst 21 Catalyst 24 Catalyst 26 Photocatalyst 27 Ultraviolet irradiation means 28 Restriction part 29 Inlet 30 Exhaust port 31 Ceiling surface 32 Decomposition chamber

Claims

A main body having a ventilation path, an adsorption means for adsorbing pollutant gas in the air arranged in the ventilation path, a desorption means for desorbing the contaminated gas adsorbed by the adsorption means, and decomposing the contaminated gas desorbed from the adsorption means Disassembling means and a blowing means for blowing air to the adsorption means, and a throttle portion is provided between the adsorption means and the decomposition means in the ventilation path, and the decomposition means is located above the adsorption means in the direction of gravity. It is located in the decomposition chamber, the decomposition chamber has an intake port and an exhaust port, and the exhaust port is positioned below the ceiling surface of the decomposition chamber and is provided in the ventilation path. And air purifier.

2. The air cleaner according to claim 1, wherein the decomposition means is an electric heating element or a catalyst, or an electric heating element and a catalyst, an electric heating element carrying a catalyst, or a photocatalyst and an ultraviolet irradiation means .