CN1594999A - Combined type air purification and sterilization device - Google Patents

Combined type air purification and sterilization device Download PDF

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CN1594999A
CN1594999A CNA2004100252085A CN200410025208A CN1594999A CN 1594999 A CN1594999 A CN 1594999A CN A2004100252085 A CNA2004100252085 A CN A2004100252085A CN 200410025208 A CN200410025208 A CN 200410025208A CN 1594999 A CN1594999 A CN 1594999A
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air
ozone
water
mist
parallel
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CN1252423C (en
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施建伟
上官文峰
刘震炎
张运乾
陈铭夏
袁坚
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上海交通大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection
    • Y02A50/20Air quality improvement or preservation
    • Y02A50/22Air sterilisation or disinfection

Abstract

A combined-typed air purification and sterilization device, is used in air purifying field. The invention consists of particle collecting component, ozone- photocatalysis, air and water departing component, water spray-air and water isolation component. Particle collecting component is installed in the front with ozone-light catalysis at its back and water spray-air and water isolation component at last, all of them are separate and parallel with each other, linking closed to air pipe all around, and all the air currents cross particle collecting component , ozone- photocatalysis and water spray- air and water isolation component. The invention combines water mist absorption technique with the photocatalysis and ozone technique, uses water mist to absorb organic pollutant and ozone gas remained and creates clean air. The invention has excellent sterilization ability and absorbing organic pollutant effect, especially suitable for air purification in room of central air conditioning system to eliminate cross transmission of infectious disease caused by using central air conditioning system effectively, and used as air humidifying and purifying device as well.

Description

组合式空气净化杀菌装置 Modular air purification sterilization apparatus

技术领域 FIELD

本发明涉及一种空气净化装置,具体是一种组合式空气净化杀菌装置。 The present invention relates to an air purification device, in particular a combined air purification sterilization apparatus. 用于居室电器技术领域。 Room for electrical technology.

背景技术 Background technique

由于现代居住环境和室内装修等引起的城市建筑物综合症、室内空调病、有机污染等直接影响到人们的健康和生命安全。 Because syndrome, indoor air conditioning disease, organic pollution and other urban buildings and interior decoration of modern living environment caused by the direct impact on people's health and safety. 因中央空调系统不能经常性的清洗和消毒,其系统内部成为细菌滋生处而带来的环境污染,已日益引起人们的重视。 Central air conditioning system is not due to regular cleaning and disinfection, their internal systems at the breeding ground for bacteria and environmental pollution caused, has increasingly attracted attention. 特别是由于中央空调系统的使用引起传染病的交叉感染问题倍受关注。 In particular the use of central air-conditioning system caused the problem of cross infection of communicable diseases much attention. 目前的空气净化器主要采用活性炭吸附技术、臭氧净化技术、负离子除尘技术和高压静电技术。 The current main air purifier activated carbon adsorption technology, ozone purification technology, high voltage negative electrostatic dust removal technology and techniques. 活性炭吸附技术只能将有害物吸附储存,而不能将其分解或去除,只是将污染源转移。 The activated carbon adsorption technology can only store the adsorption of harmful substances, which can not be removed or decomposed, simply transfer the pollution. 臭氧技术具有杀菌、除臭作用,但对有机污染物的去除效率低,且臭氧本身对人体和环境有害。 Technology ozone sterilization, deodorization effect, but the low efficiency of removal of organic pollutants and ozone in itself harmful to humans and the environment. 负离子和高压静电技术是一种物理作用过程,能去除空气中的烟尘,但对化学、生物和微生物等造成的污染无法去除净化。 And high voltage negative electrostatic technology is a physical role in the process, to remove dust in the air, but the pollution chemical, biological and microbiological purification and the like can not be removed due to.

光催化是一种新兴的环境净化技术。 Photocatalysis is an emerging environmental purification technology. 纳米TiO2光催化剂可有效地氧化或还原吸附在其表面上的有害气体分子,杀灭细菌,抑制病毒,并能将有害有机物、细菌等转化为水和二氧化碳等无害物质,且没有任何二次污染。 Nano-TiO2 photocatalyst oxidized or reduced can be effectively adsorbed on the surface of the harmful gas molecules, kill bacteria, virus inhibition, and can harmful organisms, bacteria and the like into harmless substances of water and carbon dioxide, and no secondary Pollution. 因此,近几年来成为应用于室内空气净化的研究热点。 Therefore, in recent years become for indoor air purification hotspot.

经文献检索发现,发明专利名称为:一种室内空气的净化方法及装置,专利申请号为:03126563.4,该专利公布了一种活性炭过滤、紫外灯和纳米TiO2光催化相结合的空气净化手段。 Literature search found that patented invention entitled: one kind of indoor air purification method and device patent application number: 03126563.4, which patent discloses a charcoal filter, an ultraviolet lamp and air purification means Nano TiO2 photocatalytic combination. 然而,由于中央空调气体流量大,光催化对空气的一次净化率往往较低,通过多次循环虽然可以达到使空气中污染物浓度达到室内空气质量标准,但不能有效解决由于中央空调系统的使用而引起的传染病交叉感染问题。 However, due to the large central air-conditioning gas flow, a photocatalytic air purification rate tends to be lower, although the contaminants in the air can reach the concentration of indoor air quality standards through multiple cycles, but not an effective solution due to the use of central air-conditioning system the infectious disease caused by cross-contamination issues. 同时,利用活性炭只能吸附而不能去除有害气体,最终将导致二次污染。 Meanwhile, use of activated carbon adsorption can not remove harmful gases, will eventually result in secondary pollution. 另一方面,光催化所用的紫外光源可以产生臭氧,虽然臭氧具有杀菌消毒功能,而且能与光催化产生耦合作用,显著提高光催化的活性。 On the other hand, the photocatalytic ultraviolet light source can be used to generate ozone, although ozone sterilization function, but also a coupling effect with the photocatalyst, significantly improved photocatalytic activity. 但若控制不当,往往对环境产生污染,对人体健康产生危害。 However, if not properly controlled, they tend to pollute the environment and cause harm to human health.

发明内容 SUMMARY

本发明的目的在于克服现有技术中的不足,提供一种具有高效去除室内空气有机污染物和杀菌的组合式空气净化杀菌装置,使其通过初效过滤网和高压静电捕集微粒和尘埃后,在臭氧-纳米光催化耦合作用下,能高效地降解有机污染物和杀菌,过量的臭氧和残留的有机污染物通过水雾吸收,从而能使污染物一次性通过去除率达到较高。 Object of the present invention is to overcome the disadvantages of the prior art, there is provided a sterilizing apparatus efficiently removing indoor air pollutants and organic germicidal air purifier having a combined, passed through a filter and the early effect of trapping fine particles and a high voltage electrostatic dust after , ozone - the coupling Nanocomposite, degradation of organic pollutants can be efficiently and sterilization, the ozone and excess residual organic contaminants by absorbing water mist, thereby enabling a higher pollutant removal rate by one time. 经多重处理,安全可靠。 By multiprocessing, safe and reliable.

本发明是通过以下技术方案来实现的,本发明包括:微粒捕集组件、臭氧-光催化组件、水雾喷淋-气水分离组件。 The present invention is achieved by the following technical solutions of the present invention comprising: a particulate trap assembly, ozone - photocatalytic component, spray mist - steam-water separator assembly. 其连接关系为:按气流方向,微粒捕集组件设置在最前面,微粒捕集组件后面设置臭氧-光催化组件,臭氧-光催化组件后面设置水雾喷淋-气水分离组件,三个组件互为独立且平行,四周与风管紧密连接,所有气流依次穿过微粒捕集组件,臭氧-光催化组件和水雾喷淋-气水分离组件。 The connection is as follows: according to the direction of gas flow, the particulate trap assembly disposed in the front, rear particulate trap assembly disposed ozone - photocatalytic component, ozone - catalytic module disposed behind the light mist spray - steam-water separator assembly, the three components independent and parallel to each other, surrounded by a tight connection with the duct, the entire flow passes through the particulate trap assembly, ozone - photocatalytic components and spray mist - steam-water separator assembly.

微粒捕集组件由初效过滤网和高压静电除尘部件组成。 First particulate component by the filter and the high efficiency electrostatic precipitator components. 这两个部件相互平行,且平行面垂直于气流方向,平行面尺寸与管道内截面一致。 The two members are mutually parallel, perpendicular and parallel to the airflow plane, parallel to plane coincides with the size of the pipe cross-section.

臭氧-光催化组件中包含有纳米光催化反应片和紫外灯光源。 Ozone - photocatalytic reactor assembly comprising photocatalysts sheet and the UV light source. 纳米光催化反应片可以是泡沫金属负载纳米光催化网,或是复合纳米光催化颗粒制成的过滤网,为降低气流垂直穿过网流速,该过滤网为波浪状为好。 Photocatalyst The reaction may be a foam sheet metal loading photocatalysts mesh, or filter Composite Nanosized particles were made to reduce the vertical air flow through the mesh of the filter as well as the wavy. 紫外灯光源是能产生一定臭氧的冷阴极紫外灯管或普通紫外灯管。 UV light sources can produce some ozone is a cold cathode UV lamp or UV lamp common. 复合纳米光催化颗粒制成的过滤网为两层以上,各层之间相互平行,且垂直于气流方向;紫外灯管位于复合纳米光催化颗粒制成的过滤网的每两层之间,且平行于该过滤网。 Photocatalyst composite filter made of two or more particles, between the layers parallel to each other, and perpendicular to the direction of gas flow; UV lamp positioned between the photocatalysts made of composite particles each of two filters, and parallel to the filter.

水雾喷淋-气水分离组件中设有喷嘴、水雾拦截网、拐形气水分离器、蓄水箱、调节阀、水泵或气泵和连接管道。 Spray mist - steam-water separator assembly is provided with nozzles, mist network to intercept, crank-shaped gas-water separator, water storage tank, valves, pumps and connecting pipes or pump. 喷嘴的前方依次是水雾拦截网和拐形气水分离器,蓄水箱位于水雾拦截网和拐形气水分离器的底部;蓄水箱、调节阀、水泵(或气泵)和喷嘴之间用连接管道连接。 The front of the nozzle is sequentially mist network to intercept and turn-shaped gas-water separator, a water tank located in the bottom of the mist network to intercept and turn-shaped gas-water separator; water storage tank, valves, pumps (or pump) and the nozzle connection between the connecting duct.

当空气进入该系统后,经由初效过滤网和高压静电除尘部件,微小颗粒去除后进入臭氧-光催化组件。 As the air enters the system via the early effect of high voltage electrostatic dust filter member and, after removal of minute particles into the ozone - photocatalytic assembly. 在臭氧的氧化作用、光催化降解作用、紫外灯照射以及三者的协同作用下,空气中的有机污染物和细菌等被氧化分解和杀灭。 In the ozone oxidation, photocatalytic degradation, the synergistic effect of UV light irradiation and three, organic contaminants in the air are oxidized and decomposed and bacteria kill. 残留的臭氧气体和有机污染物在大量微小水雾作用下被吸收,同时水雾被水雾拦截网和拐形气水分离器拦截,最后排出的是清洁空气。 Residual organic pollutants and ozone gas is absorbed in the number of fine mist effect, mist while the mist is shaped network to intercept and turn the air-water separator intercept, clean air is finally discharged.

本发明选择能产生臭氧的紫外(UV)灯管作为光催化的光源。 The present invention is selected to produce ozone ultraviolet (UV) lamp as a light source catalysis. 这样有两方面的作用:第一,臭氧与UV的相互作用,第二,光催化(如TiO2)与臭氧的相互作用。 This has two effects: First, the interaction of ozone and UV, and a second, light catalytic (e.g., TiO2) interacts with ozone. 通过以上的协同作用,产生大量具有高氧化能力的·OH,从而有效地去除有机污染物和杀灭细菌。 By the above synergistic effect, a large amount of a high oxidative capacity · OH, thereby effectively removing organic pollutants and kill bacteria. 可以简要地用下述化学反应方程来表示:(1)(2)(3)(4)(5)(6)(7)(8)(9)式(9)中M代表空气中的有机物。 By a chemical reaction can be schematically represented by the following equation: M representative of air (1) (2) (3) (4) (5) (6) (7) (8) (9) (9) of the organic . TiO2在紫外光的照射下形成了电子-空穴对,由于臭氧具有很强的亲电性,结果使电子与空穴的复合机率降解,从而实现降解有机物的目的。 TiO2 is formed in the UV irradiation of electron - hole pairs, since ozone has a strong electrophilic properties, with the result that the composite probability of electrons and holes degradation, in order to achieve degradation of organic compounds. 另外,臭氧捕捉了电子后,并与氢离子结合产生高活性的羟基自由基,从而更好地降解空气中的有机物。 Further, after the electron capture ozone, and hydrogen ions generated in conjunction with highly active hydroxyl radical, in order to better degradation of organic matter in the air.

本发明还同时利用水雾喷淋形成从数十微米到数百微米大小不等的雾状水微粒,大大提高了水与气体的接触面积,从而使得残留的臭氧、有机物气体等快速被水微粒吸收;水雾被水雾拦截网和拐形气水分离器拦截并与气体分离。 The present invention also spray mist is formed using a fine mist of water from tens of microns to hundreds of microns size range, greatly improving the contact area between the water and the gas, such as ozone, organic gas remaining water particles and the like is quickly absorption; mist mist intercepted network to intercept and turn-shaped gas-water separator, and separated from the gas. 拐形气水分离器由拐形状叶片组成,间距为10mm-100mm,其长度和拐角个数可以2-8个不等,根据气流阻力和分离效果情况确定。 Po-shaped gas-water separator composed by a crank shape of the blade pitch of 10mm-100mm, length and number of corners can vary from 2 to 8, determined according to the air flow resistance and separation conditions. 臭氧在水中的溶解度为空气的数十倍,同时在水溶液中臭氧还会同被捕捉的有机气体继续发生氧化还原反应,得到进一步的净化。 Ozone solubility in water ten times the number of air, ozone will continue to occur while the oxidation-reduction reaction with the organic gas is trapped in an aqueous solution, further purification. 水雾喷淋用水循环使用的同时,应进行定期添加或更换。 At the same time water mist spray recycled, should be added or replaced regularly.

与现有技术相比,本发明利用微粒捕集组件、臭氧-光催化组件和水雾喷淋-气水分离组件,既能利用臭氧辅助达到高效去除有气污染物和杀灭细菌的同时,又能消除因臭氧的残留而导致对环境的污染,从而实现高效去除气体中的有机污染物和杀灭细菌之目的。 Compared with the prior art, the present invention utilizes a particulate trap assembly, ozone - photocatalytic components and spray mist - steam-water separator assembly, both ozone gas assisted to achieve efficient removal of contaminants and have at the same time to kill bacteria, eliminate residual ozone can lead to pollution of the environment, in order to achieve efficient removal of organic pollutants in the gas and killing of the bacteria. 该发明技术特别适用于中央空调系统的室内空气净化,能有效地解决由于中央空调系统的使用引起传染病的交叉感染;也可用于室内空气加湿净化装置。 The invention is particularly applicable to techniques of indoor air purification central air conditioning system, it can effectively solve the central air conditioning system due to the use of cross-infection diseases; means can also be used to purify indoor air humidification.

附图说明 BRIEF DESCRIPTION

图1本发明结构示意图具体实施方式如图1所示,本发明包括:微粒捕集组件1、臭氧-光催化组件2、水雾喷淋-气水分离组件3,其连接关系为:按气流方向,微粒捕集组件1设置在最前面,微粒捕集组件1后面设置臭氧-光催化组件2,臭氧-光催化组件2后面设置水雾喷淋-气水分离组件3,三个组件互为独立且平行,四周与风管紧密连接,所有气流依次穿过微粒捕集组件1,臭氧-光催化组件2和水雾喷淋-气水分离组件3。 1 a schematic view showing a configuration of the present invention DETAILED DESCRIPTION FIG. 1, the present invention comprises: a particulate trap assembly, ozone - photocatalytic assembly 2, the spray mist - steam-water separator assembly 3, which is connected to the relationship: according stream direction, is provided a particulate trap assembly disposed on top of ozone, behind a particulate trap assembly - assembly photocatalysis, ozone - photocatalytic assembly 2 disposed behind the spray mist - steam-water separator assembly 3, the three components to each other independent and parallel, surrounded by a tight connection with the duct, the entire flow passes through the particulate trap assembly 1, the ozone - photocatalytic assembly 2 and spray mist - 3 gas-water separator assembly.

微粒捕集组件1设有初效过滤网4和高压静电除尘部件5,这两个部件相互平行,且平行面垂直于气流方向,平行面尺寸与管道内截面一致。 First assembly 1 is provided with a particulate trap filter 4 and the high efficiency electrostatic precipitator member 5, the two members parallel to each other and parallel to the plane perpendicular to the gas flow direction, parallel to the plane coincides with the size of the pipe cross-section.

臭氧-光催化组件2中包含有纳米光催化反应片6和紫外灯光源7,纳米光催化反应片6由泡沫金属负载纳米光催化剂制成,或是复合纳米光催化颗粒制成的过滤网,该过滤网为波浪状;紫外灯光源7是能产生臭氧的冷阴极紫外灯管或普通紫外灯管。 Ozone - photocatalytic assembly 2 includes a reaction plate Photocatalyst UV light source 6 and 7, the reaction photocatalysts sheet 6 is made of a metal foam supported photocatalysts, or filters made of Composite Nanosized particles, the wave shape of the filter; UV light source 7 is capable of generating ozone UV lamp or a common cold cathode UV lamp. 复合纳米光催化颗粒制成的过滤网为两层以上,各层之间相互平行,间距为10-100cm,且垂直于气流方向;紫外灯管位于复合纳米光催化颗粒制成的过滤网的每两层之间,且平行于该过滤网。 Photocatalyst composite filter made of two or more particles are parallel to each other between the layers and a pitch of 10-100 cm, and perpendicular to the direction of gas flow; filter made of UV lamp located in each of the composite particles photocatalysts between the two layers, and is parallel to the filter.

水雾喷淋-气水分离组件3中设有喷嘴8、水雾拦截网9、拐形气水分离器10、蓄水箱11、调节阀12、水泵或气泵13和连接管道14,喷嘴8的前方依次是水雾拦截网9和拐形气水分离器10,蓄水箱11位于水雾拦截网9和拐形气水分离器10的底部,蓄水箱11、调节阀12、水泵或气泵13和喷嘴8之间用连接管道14连接。 Spray mist - steam-water separator assembly 3 is provided with nozzles 8, mist network to intercept 9, crank-shaped gas-water separator 10, water storage tank 11, regulating valve 12, and pump 13 or pump connecting duct 14, the nozzle 8 the water mist network to intercept sequentially the front 9 and the crank-shaped gas-water separator, the water storage tank 11 located at the bottom 10 network 9 and the intercepting mist crank-shaped gas-water separator 10, the water storage tank 11, regulating valve 12, a pump or 8 is connected between the connecting duct 14 with the air pump 13 and the nozzle.

当空气进入该系统后,经由初效过滤网4和高压静电除尘部件5,微小颗粒去除后进入臭氧-光催化组件2。 As the air enters the system via the early effect of the filter member 4 and the high voltage electrostatic precipitator 5, after removal of minute particles into the ozone - photocatalytic assembly 2. 在臭氧的氧化作用、光催化降解作用、紫外灯照射以及三者的协同作用下,空气中的有机污染物和细菌等被氧化分解和杀灭。 In the ozone oxidation, photocatalytic degradation, the synergistic effect of UV light irradiation and three, organic contaminants in the air are oxidized and decomposed and bacteria kill. 残留的臭氧气体和有机污染物在大量微小水雾作用下被吸收,同时水雾被水雾拦截网9和拐形气水分离器10拦截,最后排出的是清洁空气。 Residual organic pollutants and ozone gas is absorbed in the number of fine mist effect, mist while the mist is intercepted network 9 and crank-shaped gas-water separator 10 to intercept, clean air is finally discharged.

Claims (4)

1.一种组合式空气净化杀菌装置,包括:微粒捕集组件(1)、臭氧-光催化组件(2),其特征在于,还包括:水雾喷淋-气水分离组件(3),按气流方向,微粒捕集组件(1)设置在最前面,微粒捕集组件(1)后面设置臭氧-光催化组件(2),臭氧-光催化组件(2)后面设置水雾喷淋-气水分离组件(3),三个组件互为独立且平行,四周与风管紧密连接,所有气流依次穿过微粒捕集组件(1),臭氧-光催化组件(2)和水雾喷淋-气水分离组件(3)。 A modular air purification sterilization apparatus, comprising: a particulate trap assembly (1), ozone - photocatalytic component (2), characterized in that, further comprising: a mist spray - air-water separator assembly (3), according to the direction of gas flow, the particulate trap assembly (1) is provided at the top, the particulate trap assembly (1) is provided behind the ozone - photocatalytic component (2), ozone - photocatalytic component (2) is provided behind the spray mist - gas water separation module (3), the three components mutually independent and parallel, surrounded by a tight connection with the duct, the entire flow passes through the particulate trap assembly (1), ozone - photocatalytic component (2) and the spray mist - air-water separator assembly (3).
2.根据权利要求1所述的组合式空气净化杀菌装置,其特征是,所述的微粒捕集组件(1)设有初效过滤网(4)和高压静电除尘部件(5),这两个部件相互平行,且平行面垂直于气流方向,平行面尺寸与管道内截面一致。 2. The combination of claim 1 air purification sterilization apparatus according to claim, wherein said particulate trap assembly (1) is provided with the early effect filter (4) and the high voltage electrostatic dust removal means (5), the two a member parallel to each other and parallel to the plane perpendicular to the gas flow direction, parallel to the plane coincides with the size of the pipe cross-section.
3.根据权利要求1所述的组合式空气净化杀菌装置,其特征是,所述的臭氧-光催化组件(2)中包含有纳米光催化反应片(6)和紫外灯光源(7),纳米光催化反应片(6)由泡沫金属负载纳米光催化剂制成,或是复合纳米光催化颗粒制成的过滤网,该过滤网为波浪状,紫外灯光源(7)是能产生臭氧的冷阴极紫外灯管或普通紫外灯管,复合纳米光催化颗粒制成的过滤网为两层以上,各层之间相互平行,间距为10-100cm,且垂直于气流方向,紫外灯管位于复合纳米光催化颗粒制成的过滤网的每两层之间,且平行于该过滤网。 Combination according to claim 1, wherein said air purification sterilization apparatus, characterized in that the ozone - photocatalytic component (2) contains a reaction photocatalysts sheet (6) and a UV light source (7), Photocatalyst reaction plate (6) made of foam metal loading photocatalysts, or filter composite photocatalysts made of particles, the filter is corrugated, UV light source (7) is cooled to produce ozone the cathode UV lamp or UV lamp general, filters made of two or more layers of the composite nano-photocatalytic particles, parallel to each other between the layers and a pitch of 10-100 cm, and perpendicular to the direction of airflow, UV lamp of the composite nano between every two filters made of photocatalytic particles, and parallel to the filter.
4.根据权利要求1所述的组合式空气净化杀菌装置,其特征是,所述的水雾喷淋-气水分离组件(3)中设有喷嘴(8)、水雾拦截网(9)、拐形气水分离器(10)、蓄水箱(11)、调节阀(12)、水泵或气泵(13)和连接管道(14),喷嘴(8)的前方依次是水雾拦截网(9)和拐形气水分离器(10),蓄水箱(11)位于水雾拦截网(9)和拐形气水分离器(10)的底部,蓄水箱(11)、调节阀(12)、水泵或气泵(13)和喷嘴(8)之间用连接管道(14)连接。 Combination according to claim 1, wherein said air purification sterilization apparatus, characterized in that the spray mist - steam-water separator assembly is provided with a nozzle (8), intercepting network mist (9) (3) , crank-shaped gas-water separator (10), water storage tank (11), regulating valve (12), a pump or pump (13) and connecting duct (14), in front of the nozzle (8) is sequentially mist network to intercept ( bottom 9) and the crank-shaped gas-water separator (10), water storage tank (11) positioned to intercept network mist (9) and the crank-shaped gas-water separator (10), the storage tank (11), regulating valve ( 12) connected with the connecting duct (14) between the pump or pumps (13) and the nozzle (8).
CNB2004100252085A 2004-06-17 2004-06-17 Combined type air purification and sterilization device CN1252423C (en)

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