Showing posts with label Air Cleaner. Show all posts
Showing posts with label Air Cleaner. Show all posts

Monday, January 26, 2015

空氣質素不好,當然要買空氣清新機

『空氣質素不好,當然要買空氣清新機』,就好像玻璃污糟了要用玻璃水清潔玻璃一樣,好像是最合情合理的想法。

但跟據蘋果日報報導,十款空氣清新機中便有三款連安全測試也「肥佬」,絕大部份空氣清新機更跨大效能,矇騙消費者。

消委會更公開三款有使用危險性的清新機型號,包括惠而浦Whirlpool的中國製型號 AP33、產地不明的三洋牌Sanyo ABC-VW24及中國製 Ion Care牌 GH2152。測試發現三款部份塑膠組件,未能通過灼熱線測試,機電工程署將會跟進事件。

空氣清新機能改善室內污染嗎?

另外,消費者委員會根據美國家庭電器協會標準測試各產品清除煙霧、塵埃和花粉的速度,在僅有的四款有標示淨化速度的空氣清新機中,三款都跨大效能。捷家伴的實際速度較聲稱低 20%,惠而浦和 Filtrete則低 10%。

消委會更加表示,不少空氣清新機聲稱能過濾細菌、病毒等,但醫學專家認為該等家居產品並非真的能夠過濾這些空氣中的如此細小的雜質。

至於部份空氣清新機為增加除臭殺菌效果,竟然製造臭氧。但環保促進會李博士提醒市民,直到現時並無任何美國政府機關批准這些裝置在有人的地方使用。美國聯邦貿易委員會更曾成功檢控一家大型的臭氧機生產商作出並無跟據的健康聲明。加州環境保護署亦清楚指明公眾不要使用該類空氣淨化機。

李博士進而指出由於並非所有空氣中的微細雜質都會被過濾阻隔,因此空氣清新機不能完全除去室內的空氣污染物。此外,如果空氣淨化機不含活性碳等特別媒介,其實並不可消除氣體污染物或臭味,更枉論細菌病毒。因此空氣淨化機在大量污染物及通風不足的環境下,其實並不能發揮作用,只能極其量作為附加淨化方法。再者空氣淨化機只能夠清除空氣中的花粉、屋塵及霉菌等過敏原,至於那些沈降於地或傢俬上的過敏原就未能解決了。

再者,購買的價錢已經要投資不少,電費及隔塵網等耗費更驚人。更換隔塵網時更加會引起二次元污染,得不償失。

Saturday, January 24, 2015

Gadget Home 一屋清新空氣

冬天吹東北風,除了寒風刺骨,凍到牙關打震之外,更將國內的污染物帶來香港,令空氣質素下降,搞到條氣都唔順!有人終日將門窗緊閉,希望將渾濁的空氣隔絕,然而空氣不流通,反而焗出病來。這個時候又要出動空氣清新機,保持室內空氣流通!

http://www.metrohk.com.hk/index.php?cmd=detail&id=263650

Text:Jessie Tam|Photo:威|Art:Tony Kwok|Model:Carol@Pure Models

LG最近推出的V219CS空氣清新機,最吸引的地方是它的外貌!它有別於坊間見慣那種四四方方的呆板設計,換上圓碌碌的外形,加上銀色的外殼及輕觸式的控制版面,更加適合時代感的家居設計。

四重過濾
它亦不是虛有其表,此機備有強、中、弱3段風力調校,同時亦設有自動模式,會根據內置的感應器自行調節風速。另外,它採用四重過濾技術,第一層的「雙重保護濾網」可過濾較大粒的塵埃粒子、頭髮及寵物毛髮,同時殺滅細菌;第二層是備有HEPA技術的濾網,可於2小時內在30立方米的環境內隔除PM2.5微細懸浮粒子、沙塵、致敏原、花粉和霉菌。第三層的「三重高效過濾網」則可去除甲醛,能夠消除二氧化硫和二氧化氮等會引致煙霧的物質;最後一層的「等離子產生器」能釋出大量等離子,有效淨化空氣,殺滅空氣中的病毒和細菌。

空氣除菌技術
空氣清新機特別設有「空氣除菌功能」,透過空氣中的水分子極性結合變成等離子,並包圍空氣中的有害物質以形成氫氧基,殺滅空氣中的病毒和細菌。
測試中發現,此機的睡眠模式夠靜,不會擾人清夢。當睡眠模式啟動後,首1小時會以弱風運行,隨後會根據空氣的清潔度自動調節風速,而且沒有開動時間限制,長開都無問題。

你有得揀:

飛利浦AC4372空氣清新機 $4,688/b
此機適用於700呎的空間,它有5段風速設定,並採用”VitaShield IPS”自然空氣淨化技術,能去除室內空氣的細菌。配合4重過濾網設計,可過濾微塵、香煙、甲醛及花粉等過敏原外,更可過濾大於20納米的病毒。機身上的小洞則是空氣質素燈,以藍、紫、粉紅及紅4種顏色顯示室內空氣質素。

Hitachi EP-A7000 空氣清新機 $5,990/d
適用於50平方米的室內空間,設有「空氣淨化」、「花粉」、「加濕」及「肌膚保濕」4個模式,其水箱容量為2.5升。此機備有可清洗前置過濾網、抗過敏HEPA、強效除臭及加濕過濾網,有效吸附PM2.5懸浮粒子,其靜音模式可低至15分貝。

Maxell小巧桌上型空氣清新機 $999/c
Maxell Air Purifier的空氣清新機系列,利用MRD多重環放技術,可以產生3倍的離子風,為空氣進行消毒和除臭。其電離子風力裝置可以產生大量的電離子,令覆蓋範圍更廣之外,更可提高潔淨空氣的效果。系列中的桌上型空氣清新機(MXAP-AR20)適用於車廂内,並以USB接口供電。

LG R459WN空氣清新機 $4,490/a
適用範圍高達41平方米,適合空間較大的家居使用。採用「NPI除菌功能」及四重過濾網,有效去除揮發性有機化合物、由煙霧引起的污染物及異味,以及空氣中的微粒、甲醛、塵蟎、二氧化硫及二氧化氮等污染物;並設有自動、手動、沙塵及睡眠模式等不同模式選擇。

Tuesday, January 13, 2015

網路思維如何顛覆空氣清新機?



http://www.bnext.com.tw/ext_rss/view/id/664229

空氣清淨器哪家強?如果是在三個月之前,恐怕消費者的選擇還鎖定在飛利浦、夏普、松下等一些傳統家電品牌,以及Blueair、IQair等新晉主打空氣清淨器的品牌——儘管這些品牌的售價並不便宜,動輒就是大幾千甚至上萬塊。

可是,隨著雷軍系的小米和豹米以及小蛋、三個爸爸等這樣一批流淌著網路血液的高性價比的產品橫空出世之後,到底孰優與劣,就一目了然了。

數據顯示,2013年中國市場空氣清淨器銷量為353萬台,總市值達85億元,較2012年的126萬台銷量和31億元市值增長了176%。這一增長率是2012年的4.4倍,2011年的8倍。預計2014年,中國空氣清淨器的市場銷量能達到576萬台,市值達145億元。

這麼大一塊蛋糕,網路廠商自然不肯放過,那來勢洶洶的網路公司「顛覆」傳統空氣清淨行業的殺手鐧有哪些?筆者總結了以下三點,歡迎拍磚。

殺手鐧之一:性價比
有數據顯示,2014年第一季度,線下銷售額排名靠前的空氣清清新機牌中,飛利浦均價在人民幣2947元、夏普在3307元、Blueair為5562元,而亞都等中國品牌售價大多在2000元左右。

霧霾是個新玩意,空氣清淨器在普通消費者的眼裡也充滿了神秘感,事實上,很多廠商就是利用了消費者這種不明就裡的心態而趁機牟取暴利。

據業內人士爆料,大多數品牌都是OEM,而多數的成本不到500元的清新機貼牌之後可以賣到1000以上甚至更高(價格視品牌大小而異)。可以說,空氣清淨器在本質上就是一個稀缺經濟形成的暴利產品。

果殼網的小蛋橫空出世時,主打著科學情懷的這款產品曾將其人民幣1984元的定價稱為「嚇死同行」,但是,真正嚇死同行的,卻是只賣899元的小米。從CADR(潔淨空氣輸出比率)值來說,小米為406立方米/小時,相比之下,CADR值為408立方米/小時的Blueair 410B售價超過6000元。

歸根究底,善於運用網路思維的小米使用網路技術及行銷,使整個運作過程達到傳統家電廠商所不可能達到的高效率,最終使零售價接近成本價直銷,並且還能盈利。同為雷軍系的獵豹移動的豹米也將這樣的網路思維運用到極致,雖然價格略高不到一百塊,但是探頭、風機等配置也更為高級,滿足了一部分對價格不那麼敏感的人群的需求。

從T3空氣衛士的1440、小蛋的1984,再到豹米的998和小米的899,中國網路廠商一路把空氣清淨器的價格殺到2000元以內,直到1000元以內。眾所周知,中國的消費者是價格敏感型人群,能做到低價,就已經給了傳統家電廠商致命一擊。

殺手鐧之二:用戶體驗
網路同時又是最貼近用戶、最重視用戶體驗的一個行業,他們比傳統家電廠商更懂得如何將空氣清淨器的能力發揮到極致,同時能夠從操控及外觀上取悅用戶。

以小米為例,正像手機一樣,透過「傾聽用戶的意見,和用戶做朋友,把用戶全部拉進來」的方式「一起把產品做好」。除了利用網路行銷之外,小米最貼心的可能就是解決更換濾網的問題。對用戶來說,到底什麼時候該換濾網、去哪裡換、濾網價格都是很大的問題,但是小米淨化器相應的手機APP會及時提示用戶什麼時候換濾網,並且可以實現一鍵送貨上門。

在性能上,儘管可以直接貼牌,但網路廠商們還是堅持改善技術細節,以求做到最好的用戶體驗。豹米機身LED屏幕實時顯示室內PM2.5指數就是為了讓用戶看了更「安心」,另外,為解決整機的噪音問題,豹米採用了日本高效靜音電機,這種電機耗能低,噪音小,非常適合需要安靜的臥室使用。

而從外形上來說,網路企業的產品顯然更為講究。

小蛋大概是最名副其實的一個——它的確是蛋形的,這個外形在一眾空氣清淨器中是最為出挑的,並且,由於果殼網是專注於科學知識的網站,這小蛋贏得了相當一部分「科學控」的信賴和青睞。

殺手鐧之三:技術控
網路公司都是「技術控」、「研發控」,不同於傳統的家電廠商,即便是面對著清淨器這樣一個已經高度標準化的產品,他們還是希望盡可能嵌入最好的技術。

果殼網的科普經驗、趣玩網的創意產品銷售經驗,讓小蛋深知傳統空氣清淨器的反人類設計。所以,小蛋做了不少打動「科學青年」的設計。比如,小蛋內置吸塵結構清潔,通過算法可以計算出校濾網容塵程度,自動開啟吸塵清潔功能,完全不用用戶動手;根據室內空氣質量、使用時間、甚至外部環境綜合計算,計算濾網的實際壽命。

而為了更加精確並實時監測室內PM2.5等空氣質量問題,豹米宣稱搭載了德國主動式雷射探頭,精度堪比國家檢測機構的萬元探測儀。

事實上,探頭對於一個空氣清淨器來說確實至關重要,空氣清淨器運行與否,全都基於探頭對室內空氣質量的判斷,類似於「指揮官」。就成本來說,市面上常見的普通外探頭才人民幣20幾塊錢,而豹米使用的雷射探頭成本高達人民幣200多塊錢。

此外,對於網路廠商來說,將傳統的空氣清淨器智慧化是他們的看家本領。無論是小米還是豹米,都可以通過手機APP遠程操控清淨器。從此,空氣清淨器不再是一件簡單的家電,而成了智慧軟體。

本文出自虎嗅網

Thursday, January 8, 2015

InFocus空氣偵測器 價格超殺



- http://www.appledaily.com.tw/appledaily/article/finance/20150109/36316587/

【陳俐妏╱台北報導】與鴻海(2317)關係密切的InFocus,除積極搶攻智慧手機,也推出由鴻海打造的空氣偵測器airPro小清新,已通過國家通訊傳播委員會(NCC)認證,預料農曆年前搶市,鴻海董事長郭台銘對InFocus的期待不只如此,近期將更新企業識別,並於全台北中南選點設通路,強打體驗行銷。

重新打造企業識別
InFocus春節檔期前推具備OIS光學防手震、前後雙鏡頭1300萬畫素的5.5吋M530智慧手機,支援4G全頻段雙卡雙待,在美國消費性電子展(CES)發表首款裸視3D M550,有望上半年推出。

此外,InFocus看好智慧家電市場,推出空氣偵測器airPro小清新,內建抽取馬達,具備多種感應器,透過手機和APP連結應用,偵測紫外線,陽光UV、氣壓等環境變化,近似行動電源大小,方便隨身攜帶,農曆年前可望在InFocus商城推出,售價超殺僅1588元,搶紅包商機。 此外,InFocu預告,今年首季將重新打造品牌企業識別,從通路設的相關櫃位設計、內部人員都已到位,InFocus也與超多維公司(Super D)合作,預料在3D技術和內容會有所布局。

Friday, December 19, 2014

聲音有多大?小米空氣清新機各個檔位噪音詳細

http://news.cnyes.com/20141219/聲音有多大小米空氣凈化器各個檔位噪音詳細-183313358376110.shtml

小米空氣清新機的推出受到了用戶極大的關注,899元的價格,對PM2.5可達99.99%的過濾凈化效果都極具震撼力,那這款品在各個工作檔位的工作聲音和功耗有多大呢?下面就讓我們一起看看。

空氣清新機的工作原理是將污濁的空氣吸進,然后經過初效、HEPA、活性炭三層濾網將空氣中的可吸入顆粒物和有害氣體進行過濾、吸附,最後將潔凈的空氣送回室內。為了讓室內每個角落的空氣都得到凈化,要形成空氣對流,製造全屋空氣大循環,這要求空氣清新機吸進與送出空氣時有足夠的風壓,因此也會生一定的工作聲音。完全靜音的空氣清新機因無法形成足夠的空氣過濾量,是無法起到空氣凈化效果的。

小米空氣清新機各檔位的工作聲音是多少?

小米空氣清新機有AUTO智能自動化、睡眠靜音和高速凈化三種工作模式,AUTO智能自動化又分為弱檔、中檔和強檔模式。其中,睡眠靜音模式的工作 聲音是32dB,AUTO下的弱檔模式45dB,中檔模式50dB,強檔模式60dB,高速凈化模式68dB。那麼,這些數字到底代表做大的聲音感受呢? 據檢測,家庭中電視機、收錄機所生的聲音可達60至80dB,洗衣機為42至70 dB,電冰箱為34至50 dB(數據來自人民網)。

睡眠靜音模式主要是用於夜間睡眠時使用,功率為6w,32dB的聲音就像寧靜沙漠的夜晚,有風吹過耳邊。AUTO(自動)模式(包含弱、中、強三 檔),自動檔運行下功率相當於飛利浦節能燈泡的用電量(10w到30w)。弱檔模式45dB,就像辦公室同事小聲怯怯私語的聲音,功率為8w。中檔模式 50dB,相當於正常大家談話的聲音,功率為13w。強檔模式 60dB,與洗衣機的工作的聲音相當,功率為31w。高速凈化模式的聲音為68dB,相當於10米外經過的汽車的聲音。與其他同檔位的空氣清新機相比,這 個是小米空氣清新機獨有的功能。高速凈化模式只有在用戶手動觸發的情況下才能開啟,持續時間為15分鐘,高速模式開啟15分鐘后會自動切換為自動模式。該 模式的功率為75w。

建議平時一直將小米空氣清新機的工作模式保持在AUTO自動模式,這樣一旦控制空氣質量下降,凈化器可以及時做出反饋調整不同的風速檔位,保持您的室內空氣潔凈,自動狀態大部分時間下都會在低檔速運行,只有當凈化器檢測到室內空氣質量出現問題的情況才會提升檔位。

什麼時候使用高速凈化模式?

設計AUTO模式的原因是應對某些極端環境下的空氣凈化需求,比如在家裏抽煙怕被老婆發現,室內PM2.5污染爆表,需要快速凈化到純凈空氣狀態。 高速凈化模式只能通過手動或者智能家庭APP控制激活,工作時間設定為15分鐘,可以用最短的時間將全屋空氣凈化一次,之后就會自動回到安靜的AUTO模 式。如果有同學覺得68dB聲音有些大,可以在外出時使用,回家前先遠程遙控打開一下小米智能家庭,把家裏的空氣徹徹底底的凈化一遍,這樣回家就可以享受 好空氣。

小米空氣清新機的CADR值高達406(空氣凈化效率,是國際公認衡量空氣清新機的權威指標),在高速凈化模式下凈化一次28-48平方米的面積僅 需要12分鐘,之后就會進入安靜的AUTO模式。而CADR值僅有200多的低端空氣清新機全速工作30分鐘,也未必能完成一次全屋的完全凈化,要想達到 相同的凈化效果,用戶需要等待更長的時間才能進入安靜模式。

科普:如何正確測量噪音值

對於空氣清新機工作噪音的測試有明確的國家標準,在測試噪音時,直接將測量設備置於凈化器頂部出風口處讀取數據顯然是不正確的。根據《聲學家用電 器及類似用途器具噪聲測試方法 第1部分:通用要求》GB/T 4214.1-2000中的規定,“對於自由放置的落地式器具,包括嵌入式器具,測量表面是帶有九個測點的矩形六面體”,如下圖:

圖中藍色圓點為傳聲器的位置,通過對這9個點位的測量,讀取數值,並按照專業的計算方法得出品的準確噪音值。由此可見,正確測量一款品的噪音值需要專業的方法和設備,通過非專業方式測量得出的數據,是無法正確反應品噪音值的。

Wednesday, December 17, 2014

小米就空氣清新機抄襲事件作出回應



http://info.hvacr.hc360.com/2014/12/151539542031.shtml

慧聰空調制冷網就日本淨化器廠商巴慕達暗指小米抄襲產品設計,小米旗下的智米科技發表聲明做出回應,稱小米空氣清新機有著完全不同的設計。對於巴慕達公司的聲明和部分業內不負責任言論深感遺憾。

日本空氣清新機廠商巴慕達及其品牌創始人兼產品總設計師今天發布聲明,稱小米科技發布的空氣清新機,該產品從外形,內部構造以及宣傳文案等都與本巴慕達在今年初發布的AirEngine安之風空氣清新機高度相似。

13日下午小米旗下智米科技發表公開聲明,稱小米空氣清新機在技術、外觀等方面與巴慕達的AirEngine空氣清新機的產品有著完全不同的設計。對於巴慕達公司的公開聲明和部分業內不負責任、有失專業水准的言論深感遺憾。

以下為聲明全文:

智米是一家剛成立不久的創業公司,但從創辦之日起,我們就非常尊重知識產權且注重知識產權的積累。目前,我們已向國家專利局提交了31項專利申請,其中最為重要的就是在風扇、風道、和整機結構等產品的關鍵核心部件或設計環節的專利。

我們的產品並沒有抄襲包括Balmuda在內任何企業的專利設計及技術,我們在技術、外觀等方面與Balmuda的AirEngine空氣清新機的產品有著完全不同的設計。對於Balmuda公司的公開聲明和部分業內不負責任、有失專業水准的言論,我們深感遺憾。

在研發小米空氣清新機過程中,我們嘗試了100多種設計,最終選定了我們認為最為合理的優化方案。在家電行業中,由於空氣動力學等物理規律的限定,以及制造工業長期積累的最優化設計方案等因素,很多品類都有相對成熟的外觀及結構設計理念,如冰箱、電視、空調等產品的外形相似度偏高。我們並不認同“為不同而不同”、“重復發明輪子”式的爭論,而是希望把精力投入到不斷打磨、持續優化產品功能、功效及體驗中去。

同時,我們選用了業內最頂尖的零組件及濾芯材料。智米是小米智能生態鏈企業,認同小米的價值觀,我們希望用真材實料做出高性能的產品,去除行業不合理的暴利,讓每個人、每個家庭都能享受清新的空氣和健康的生活,惠及大眾、造福社會。

為此,我們一直以開放姿態,希望與所有有志於此的行業伙伴通力合作,為優質空氣清新機產品的家庭普及率提升不斷努力,共同推進行業進步,做大空氣清新機整體市場蛋糕。

Sunday, December 14, 2014

小米空氣清新機噪音為啥那麼大



北京新浪網 http://news.sina.com.tw/article/20141215/13601949.html

近日,有媒體發現,小米送測的空氣清新機共提供了三種工作方式,分別為自動、睡眠、高速模式。睡眠自然不用多說,非常安靜;自動模式稍大一點,但也完全可以接受;但高速模式下,堪比「飛機起飛」,實測噪音達到了70db。

一個空氣清新機,為啥會有這麼大的噪音?剛剛,小米空氣清新機主創智米公司在微博給予了回應,他們表示,官方數據是32db-68db,媒體得出的數據在誤差範圍內,並且這些數值都在國家標準規定的範圍內。

智米表示,小米空氣清新機使用了使用了2個風機,而且其中1個是能製造強大風壓的「后傾離心風機」(風壓大,效率高,噪音偏大,iQair、安利等高性能凈化器使用),和使用1個「前傾離心風機」(風壓小,效率低,噪音小,飛利浦、夏普等普通性能凈化器使用)相比,確實不佔優勢。

小米空氣清新機的核心要素是「小體量,高性能」,為此不得在噪音方面做出一些讓步。

產生最大噪音的「高速模式」,會在15分鐘后自動切換為「自動模式」(自動模式的噪音很低,並且會在3個不同風檔間自動切換)。

並且由於產品具有智能遠程控制功能,如果在回家前,點擊運行「高速模式」,一進家門,就可以享受潔凈的空氣和靜謐的環境。

Friday, December 12, 2014

小米式創意「參考」日本名牌?「平價」智能空氣清新機


▲ 小米手機搖控空氣清新機,它是支援 Wi-Fi 802.11 b/g/n,賣價 $899 人民幣(約 $1,100 港幣)


▲ 這是日本品牌 Balmuda 的空氣清新機 AirEngine ,有網友覺得設計相當接近,售價為 $5,499 人民幣(約 $6,900 港幣)

- http://www.eprice.com.hk/nb/talk/1141/23404/1/

應該有不少網友留意小米的「新品溝通會」,主題「等風來」。意料之外,小米轉投家電市場,推出自家的「智能空氣清新機」。資訊公開後就傳來網友批評,設計「參考」日本牌子。價錢方面小米仍然主打「抵食夾大件」,低價錢高規格,你會不會考慮小米的「智能空氣清新機」?

小米推智能空氣清新機!網友指設計「參考」日本牌子 Balmuda

既然是小米出品,當然有一定的「智能」,這架小米空氣清新機是可以用手機控制,亦會智能通知手機空氣淨化程度、濾沁什麼時候需要更換,亦可以設定「定時淨化」功能。但網友很快發現「小米空氣淨化機」的設計和日本牌子 Balmuda 相當接近,就連機身大小亦是差不多。

小米空氣清新機算不算高CP值?版主就給例子大家 :

小米空氣清新機的出風量: 409 立方米/ 小時,超過 300立方米/小時的空氣清新機最低限度售價為 $6,000 ~ $7,000 ,小米空氣清新機賣價 $899 人民幣(約 $1,100 港幣)。比較同級裝置廉價八成之多!而 28.4 ~ 48.7 平方米的面積內更可以做到 12 分鐘做到一次完全淨化,對於香港的蝸居是十分足夠。

小米空氣清新機暫時只供中國大陸售賣,於12 月 16 號正式開賣。

Tuesday, November 18, 2014

「空氣」太陽能增效能

http://paper.wenweipo.com/2014/11/17/BN1411170003.htm

智慧城市的魅力還在於其能帶動產業的發展。上海築能環境科技公司研發「炫風」太陽能。它以空氣作為傳熱介質,顛覆傳統太陽能理念,解決傳統太陽能的凍裂、過熱、洩露、腐蝕及短壽命等問題,充分保證太陽能工程的「安全」與「壽命」。

「『炫風』太陽能徹底顛覆傳統太陽能供熱系統,用『空氣』替代傳統『水』傳熱,且做到了集熱、蓄熱一體化。」項目負責人介紹,「這樣的設計不僅簡化太陽能供暖系統,還大大降低安裝和材料成本,提高系統運行的可能性。」

Thursday, November 13, 2014

大陸研發頭戴式空氣清新機



這個有大陸公司研發的風小六智能空氣清新機可以檢測二氧化碳、甲醛 voc 濃度、PM2.5 含量、溫度和濕度,並且能夠 99.9% 淨化 PM2.5、甲醛 voc。配合手機 App 就會知道空氣的污染程度,再透過大數據將收集得到的空氣質素資料在互聯網上傳播共享。此外,這部智能空氣淨化機亦兼具健康監測、藍芽耳機和流動電源的功能。

官方網站表示風小六智能空氣清新機能夠每小時淨化空氣約 3 立方米,每次充電可以使用 8 小時。可惜的是,開發商暫時未有公佈推出時間表和定價。

來源:any-air.cn | http://unwire.hk/2014/11/11/air-purifier-head-china/life-tech/green-2/

Sunday, October 26, 2014

6 ways to combat indoor air pollution

Vacuum, dust, and other ways to clear the air
http://www.consumerreports.org/cro/news/2014/09/6-ways-to-combat-indoor-air-pollution/index.htm | Published: September 26, 2014 08:00 AM

The air inside your house could be five times more polluted than what’s outside, especially during the winter. Cold weather keeps windows and doors shut tight, preventing the exchange of fresh air. Roaring fireplaces are a potential source of noxious soot and smoke. Even scented candles, whether peppermint or pine, can release harsh chemicals.

Those pollutants can trigger a number of ailments, including allergies, asthma, and chronic headaches. Even if you’re symptom-free, it pays to clear the air at home when you're expecting guests because people react differently to contaminants. Here are some effective strategies from the experts at Consumer Reports—and many of them don’t cost a thing. You’ll also find our latest test results for air purifiers, which can provide an added weapon in your effort to breathe easier.

Control the moisture
Water is the cause of so many house problems, including those related to bad indoor air. Too much moisture raises humidity levels above 50 percent, the point at which mold, mildew, and other allergens thrive. That’s why it’s critical to keep out rainwater by maintaining your gutters, leaders, and downspouts. Also make sure that the soil around your house slopes away from the foundation.

Capture the dust
All of those particles you see dancing through the daylight come from pollen, pet dander, and other pollutants. Regular vacuuming prevents dust buildup on carpets, furniture, and other surfaces. Once a week should suffice, although if you have pets that shed a lot, you’ll probably need to clean more often. To find the best vacuum for carpet, bare floors and pet hair, check our full vacuum Ratings and recommendations.

It’s a good idea to dust furniture, blinds, and windowsills before you vacuum. Using an electrostatically charged duster or a damp rag will help minimize airborne particulates. Of course, the less dirt that enters your house, the better. Place doormats at entrances and consider imposing a shoes-off policy.

Switch on your exhaust fans
Routinely replacing the air in your house with a fresh outdoor supply will cut down on contaminants. Exhaust fans are a good source of ventilation, especially during the winter months when windows tend to be closed. Run the bathroom fan after you shower to control mold and mildew. As for the kitchen, our tests have found that vented range hoods remove smoke and odors far better than a fan on an over-the-range microwave.

Contain any chemicals
Remember that many cleaning products are a potential source of contaminants. Always read the labels and follow instructions carefully. In the case of certain cleaners, chemicals are emitted quickly, so use them only in well-ventilated areas. Other products, including paint, release chemicals over time, so look for those that are low in VOCs (volatile organic compounds) and for items that are formaldehyde-free. After using them in a room, keep the windows open with a fan running for several days.

Stamp out smoke and fumes
We all know that smoking cigarettes kills. But what’s less known is that about 3,000 nonsmokers die each year from lung cancer caused by secondhand smoke. So ban smoking in your house.

Wood-burning stoves and fireplaces can also release harmful smoke and soot if they’re not maintained properly. Along with scented candles, incense can send particles into the air that can cause asthma attacks and allergic reactions.

Then there’s carbon monoxide, a more threatening pollutant that claims hundreds of lives each year. Referred to as the silent killer, the odorless, colorless gas can kill without warning if it leaks from a faulty furnace, clothes dryer, or other fuel-fired appliance. Install a CO alarm on every level of your house, including the basement.

Consider an air purifier
Those devices can help clear the air in your house. We wouldn’t have spent almost $10,000 on dozens of test models if that weren’t true. But first you should take the preventative steps outlined above. “Without source control and proper ventilation, using an air cleaner to reduce pollutants in your home is like bailing water out of a leaky boat,” says Elliott Horner, Ph.D., lead scientist for UL Environment (Underwriters Laboratories). Certain environmental conditions may also create the need for supplemental air cleaning. For example, if you rarely open your windows because you live next to a highway or near an industrial site, an air purifier might be helpful.

Top air purifiers from our tests
Consumer Reports tests both room and whole-house air purifiers, which replace the standard filter in a forced-air heating or cooling system. Here are the top three of each type.

Saturday, October 25, 2014

Don’t Waste Your Money: Best & Worst Air Purifiers

http://wtkr.com/2014/10/15/dont-waste-your-money-best-worst-air-purifiers/

Air cleaners make claims like “capture 99 percent of allergens and irritants,” “remove allergens like dust, pet dander and pollen,” healthier, fresher air.” Consumer Reports tested 26 portable air cleaners to see how well they work.
Testers pump contaminants into a controlled chamber, dust, as well as smoke. Some of the models tested were slow and to removed the contaminants and not terribly effective. The three poorest performers: Hamilton Beach TrueAir 0483, Hoover model WH10600 and Holmes HAP1200-U.

Consumer Reports says also stay away from electrostatic purifiers because they can emit ozone, which can aggravate allergies and asthma.

And be aware, even the best air cleaner isn’t going to be enough if you’re not very proactive about removing contaminants like vacuuming, dusting, making sure the rooms are adequately ventilated. Those things are actually much more important than just using an air cleaner.

If you still want an air purifier, Consumer Reports says opt for one that uses filters to clean the air. Consumer Reports recommends the Honeywell HPA300for $250. It’s relatively quiet and excels at removing dust, pollen and smoke.

Consumer Reports also tested whole-house filters for homes heated and cooled with forced-air. They replace the standard filter in a forced air system. The 3M Filtrete 1550 for about $30 is very good at removing dust and smoke and is one of the least expensive tested. Like many whole-house filters it will need to be installed by a professional.

Thursday, October 23, 2014

識揀淨化機吸一口清新空氣

http://the-sun.on.cc/cnt/lifestyle/20141011/00481_001.html?pubdate=20141011

空氣污染,健康遭殃!尤其是鼻敏感、哮喘等患者,每逢轉季都要活受罪。二氧化碳、可吸入懸浮粒子、甲醛等都是常見的室內空氣污染物,每天我們有不少時間留在室內,想紓緩問題,空氣清新機或許大派用場,專家建議按家居面積及個人需要選購產品,識得揀以後就能呼吸清新空氣!

根據環境保護署轄下的室內空氣質素資訊中心指出,空調樓宇內最常見的室內空氣污染物,包括二氧化碳、可吸入懸浮粒子、甲醛、總揮發性有機化合物及空氣中的細菌。如果樓宇附近有停車場或室內裝設有燃燒爐具(如供應燒烤食品的食肆),一氧化碳及二氧化氮這類燃燒產物的水平,亦可能偏高。除了控制污染源頭、保持空氣流通、注意家居衞生等,還可購買空氣清新機,多管齊下,讓大家呼吸到健康清新的空氣。

按面積選擇

至於空氣清新機的操作原理,一般是由風扇抽入空氣,把當中的懸浮粒子、雜質等,以過濾器隔開,達致淨化效果。香港高等科技教育學院科技學院院長蔡宏教授提醒:「現時並無一件產品能對付所有空氣問題,有的針對空氣中的異味,有的針對懸浮粒子、甲醛等,所以大家應按需要而選購。」

蔡教授補充說:「室內面積是另一個重要的指標,可利用『地板面積』乘『樓底』來計算『有效空間』,然後根據數據選擇產品。若置身在較大空間,我們可採用『機跟人走』的原則,即多放一部空氣清新機,發揮更佳的淨化效果。」
此外,大家亦不要忽視機內濾芯。蔡教授說:「過往曾就這類產品進行研究,新的濾芯當然能發揮最佳效果,但幾個星期後,效果便漸弱。而有些濾芯塗上二氧化鈦,甚至採用納米技術,可令表面的物質不易掉落。因此,大家應參考說明書,注意濾芯有效期限。」

Monday, September 22, 2014

中度污染別害怕 五大空氣清新機來解憂

原標題:中度污染別害怕 五大空氣清新機來解憂 http://homea.people.com.cn/n/2014/0923/c41390-25713883-6.html

引言
  昨天北京發布了中度污染的空氣污染情況,天氣一直陰沉,灰霾的天氣下,人們的心情也受到一定的影響。大家可還記得年初的重度霧霾天氣,給我們的生活和健康造成了嚴重影響,PM2.5對人們的健康影響是巨大的,粒徑在2.5微米以下的細顆粒物,直徑相當於人類頭發的1/10大小,不易被阻擋。被吸入人體後會直接進入支氣管,干擾肺部的氣體交換,引發包括哮喘、支氣管炎和心血管病等方面的疾病。
中度污染別害怕 五大空氣清新機來解憂
  人們對於PM2.5的認知來源於嚴重的霧霾天氣,而這種天氣也讓空氣清新機成為了家喻戶曉的產品。目前空氣清新機行業發展迅速,各個品牌相繼加入到空氣清新機的行業中,各種外觀設計,各種功能的創新,為行業發展做出了貢獻,但是,雜亂無章的競爭加劇了行業混亂的現像。而當下,空氣清新機行業的標准商在研究制定中,所以,消費者就不得不根據自己的經驗和品牌知名度進行選擇。
  選擇空氣清新機最主要的就是看清新機的一次性清潔效率,你可以根據你的使用面積進行選擇。空氣清新機的HEPA濾網是需要更換的,更換的年限每款產品都有所差別,所以,購買空氣清新機是需要考慮二次消費的。
  污染天氣中不要害怕,空氣清新機幫你掃除塵埃,哪些空氣清新機必不可少呢?不要著急,小編馬上為大家介紹。
清新機推薦1:SKG 4878空氣清新機
  推薦理由:選擇空氣清新機一定要選擇有知名度的產品,這樣在產品的質量上才會有保障。SKG 4878空氣清新機外觀采用時下流行的金黃色,更加符合當下的流行趨勢,放在家中也會讓家中熠熠生光。在性能上,SKG 4878空氣清新機具有高濃度淨離子主動淨化功能,在清新機周邊50cm範圍內想成正負電荷雲,吸引漂浮的塵埃,細小微粒使之帶上經典,吸入清新機,達到除塵效果。
  產品詳情:
  【外觀評價】SKG 4878空氣清新機土豪金色的外觀設計,盡顯您尊貴奢華的生活品質,擺放在家中更是讓整間房屋的檔次得以提升。產品LCD液晶顯示屏,讓用戶對機器工作狀態一目了然。
  【主要性能】SKG 4878空氣清新機具有高濃度淨離子主動淨化功能,在清新機周邊50cm範圍內想成正負電荷雲,吸引漂浮的塵埃,細小微粒使之帶上經典,吸入清新機,達到除塵效果。該機采用銀離子殺菌技術,銀離子可強烈吸附和破壞細菌體的蛋白酶使其喪失火星,致細菌死亡,當細菌唄銀離子殺死後,銀離子又游離出來,再與其他菌落接觸,周而復始,因此可持久性殺菌。另外,本機采用日被最新冷觸媒3代技術,去除甲醛率95.7%,采用間斷高科技納米材料為基材,甲醛淨化能力有效提升200%。能直接把甲醛和苯等有機污染氣體分解成無污染的水和二氧化碳,甲醛分解效果高達99.2%。
清新機推薦2:西屋AP-845X清新機
  推薦理由:西屋是國內外比較知名的品牌,在產品的外觀設計上,它有著獨特的風格。美國西屋AP-845X空氣清新機外觀設計十分小巧,這樣放在家中就不會占用太多空間,而且收納起來也比較容易,超炫的液晶顯示屏,觀察起來更加方便。美國西屋AP-845X清新機采用國際領先的五重淨化技術,能夠有效對家中細菌、灰塵、甲醛進行清除。
  產品詳情:
  【外觀評價】美國西屋AP-845X清新機外觀設計十分時尚,灰金色的顏色,相比於其他產品顏色更加莊重。輕觸式的按鍵操作,符合當下的潮流操作更加簡便。液晶顯示屏,實時顯示你的操作。超薄的機體也是一大優勢,放在家中不會占用太多空間,收納也比較容易。
  【主要性能】美國西屋AP-845X清新機采用國際領先的五重淨化技術,可清洗的抗菌預過濾網、工業級HEPA濾網、高密度脫臭除煙碳層、專業除甲醛濾網、納米冷觸媒出風口,有效對抗甲醛、細菌以及PM2.5,能夠為你解決家居空氣問題。
  【專業點評】美國西屋AP-845X清新機外觀設計輕巧時尚,在設計上作工考究,而且,超薄的設計是時下許多清新機無法企及的。性能上,五重超強過濾,加上冷觸媒技術,為你全面解決家居遇到的問題。目前這款產品的市場售價是2999元,性價比較高。
  三菱重工空氣清新機SPS-511AC-W
  [參考價格] 3599元
清新機推薦3:海爾清新機 KJ-F200/CA
  推薦理由:海爾是國內外知名品牌,海爾不但產品制作精良,而且售後服務非常到位,售後人員及時解決問題,很多人願意購買海爾,也是因為海爾的產品售後服務做的十分完善。海爾KJ-F200/CA清新機與空氣盒子一起推出,二者都可以用手機APP控制,這也成為這款產品的最大亮點,不管你身在哪裡,都可以控制家中的空氣清新機。
  產品詳情:
  【外觀評價】海爾空氣清新機KJ-F200/CA外觀設計十分時尚,香檳色的顏色,看上去更加大氣,仿生智能手機的外觀,讓它放在家中更加美觀,能夠與不同的家居風格搭配。輕觸式的按鍵設計,操作更加便利。
  【主要性能】海爾空氣清新機KJ-F200/CA在性能上設計上更加強力,內部采用五重過濾,初效過濾網、高效海帕過濾網、高效活性粒子、納米光觸媒、負離子等,五重過濾層層把控,能夠有效應對灰塵、霧霾和細菌。另外,本機可采用手機APP控制,也就是說,不管你在上班還是旅游,都可以輕松控制家中的空氣清新機。
  【專業點評】海爾空氣清新機KJ-F200/CA在外觀設計上別具匠心,超薄的設計,讓這款產品不會占用太多的空間,收納也比較容易。性能上,本機采用五重高效過濾,對家中空氣層層把控,可用手機APP控制成為本機最大的亮點。目前,這款產品的市場售價是2499,性價比較高。
  海爾空氣清新機KJ-F200/CA
  [參考價格] 2499元
清新機推薦4:松下清新機F-VXG70C
  推薦理由:松下清新機F-VXG70C外觀時尚搶眼,多種特色功能也非常實用,兒童鎖對於家中有寶寶的家庭更方便更安全。過濾網更換提醒指示燈,人性化的更換提醒。急速運轉模式即淨煙功能,更快地淨化室內的有害氣體。目前本機售價為4999元。
  產品詳情:
  松下清新機F-VXG70C長方體外觀溫馨大氣,酒紅色的前面板,配上液晶顯示屏顯得極為奢華,本機淨化空氣的同時也可以裝點家居。控制面板設計在機體上方,輕觸式按鍵,操作方便。前面板特有感應上滑功能,可感應當前室內空氣質量,做出相應反應。
  前面板可滑動
  松下清新機F-VXG70C設有過濾網更換提醒,指示燈在閃爍,即表示需更換過濾網,本機采用的是自立式水箱,通過水箱底部支架可立於平面上,加水、清洗更便捷。
  自立式水箱
  過濾系統
  松下清新機F-VXG70C特有急速運轉模式即淨煙功能,能迅速感應到香煙味,並在急速運轉模式下,更快地淨化室內的香煙味及有害氣體,讓您遠離二手煙和有害氣體的危害,適用於吸煙者的家庭和吸煙會議室等場所。本機帶有兒童鎖,對家中有寶寶的家庭很實用,使用更放心。本機。
  操作面板
  適用面積 40-60平方米平方米
  功率 70W
  水箱容量 393升
  額定電壓 220V~50Hz
  外觀尺寸 608×390×275mm
  重量 10.2KG
  其它性能 加濕+淨化
  nanoe細微水離子
  前面板感應上滑
  淨化導航
  急速運轉模式(淨煙功能)
  睡眠模式8小時
  兒童安全鎖
  過濾網更換提醒
  編輯點評:這款松下清新機F-VXG70C外觀時尚搶眼,多種特色功能也非常實用,兒童鎖對於家中有寶寶的家庭更方便更安全。過濾網更換提醒指示燈,人性化的更換提醒。急速運轉模式即淨煙功能,更快地淨化室內的有害氣體。目前本機售價為4999元,價格較高,喜歡的朋友可以購買。
  松下 F-VXG70C-R/N
  [參考價格] 4999元
淨化推薦5:飛利浦空氣清新機AC4002
  推薦理由:飛利浦一直是大家比較熟悉的品牌,飛利浦較早的涉及了清新機領域,飛利浦清新機我i阿管設計秉承簡約風格,在產品外觀上比較注重工藝設計,在性能上關注淨化效果。小編要為大家推薦的這款飛利浦空氣清新機AC4002,體積較為小巧,外觀設計時尚,是時下年輕人比較喜歡的形式。
  產品詳情:
  飛利浦空氣清新機AC4002外觀簡約風格,是很多年輕人追捧的樣式,它頂部采用鏤空的設計,個性又時尚,操作界面在機體的上部,操作簡單,輕薄身材的它,不會多占用家用面積,收納也比較方便。
  空氣質量顯示 出風口設計
  飛利浦空氣清新機AC4002可充分的過濾空氣中的毛發、甲醛、微塵和其他的細菌。睡眠模式的加入,讓你安心入眠智能的感應器,可隨時提供空氣質量的信息,當需要更換過濾網時,更換指示燈會發出指示,拆卸也比較方便。
  操作界面
  適用面積 最大30平方米
  功率 40W
  除菌能力 >99.9%
  噪聲 42分貝
  額定電壓 220V/50Hz
  重量 5.31KG
  其它特點 飛利浦空氣清新機讓您在夜裡睡的更舒暢
  其具有弱光指示燈的獨特睡眠模式能夠安靜地過濾空氣中的細菌和過敏原
  健康空氣濾網更換提醒和智能鎖為您提供持久健康空氣
  編輯點評:這款飛利浦空氣清新機AC4002機體設計小巧靚麗,純白色容易與家居相配合,而且擦拭比較方便,機體上具有三級的空氣質量顯示,比較直觀,智能的健康鎖,可保證健康的空氣質量,比較人性化,目前這款機器的市場售價是3749元,喜歡的人士不妨選用。

Saturday, August 16, 2014

Austin Air Purifier HealthMate Review

Youtube - https://www.youtube.com/watch?v=ejqx5GaDuiE

This review shows inside the Austin purifier and the Hepa Carbon and Zeolite filter.

Thursday, August 7, 2014

Cleaning the Air

Air Purifiers | home.howstuffworks.com/air-purifier.htm

If ozone generators and ionizing purifiers have questionable efficacy at cleaning air, what can be done to remove contaminants from our homes? There are three basic steps, in order of usefulness:

  1. Get rid of the source of the contaminants. If the problem is cigarette smoke, smoke outside. If mold is causing problems, identify the moldy areas and clean them up. Severe cases may require extensive work to get at mold within walls, but if the mold is left in place, the problem will only get worse. When pet dander is a problem, the pet could be limited to certain areas of the house and kept off furniture. Good hygiene along with regular cleaning and vacuuming will remove a great deal of dust and limit opportunities for mold growth. Using special plastic bags on mattresses and box springs can also keep down allergy-causing contaminants. Image courtesy Andrea Booher/FEMA Mold growing on household walls should be cleaned thoroughly and as soon as possible to avoid illness.
  2. Dilute the air in your house. In other words, open the windows. The air outside probably contains fewer contaminants than what is inside (unless you live downwind from a coal plant). Allowing fresh air inside will sweep away some contaminants.
  3. Clean the air with an effective filter system.

The next logical question, of course, is "how do you know which air cleaners are effective?" Fortunately, there is an industry standard that makes it easy to compare air cleaners. The Association of Home Appliance Manufacturers (AHAM) assigns a Clean Air Delivery Rate (CADR) to air cleaners. AHAM runs a standard test to see how well an air cleaner removes certain contaminants from a volume of air. An air cleaner bearing the AHAM seal will have three CADR numbers listed: one for tobacco smoke, one for pollen and one for dust. A higher number indicates a greater ability to clean air, with maximums of 450 for pollen and smoke and 400 for dust [ref]. AHAM recommends using an air cleaner with a CADR number at least two-thirds the area of the room

From the CADR Web site: "For example, a 10-foot by 12-foot room -- 120 square feet -- would require an air cleaner with a tobacco smoke CADR of at least 80. If your room size is smaller, the unit will simply clean the air more often or faster. If you have ceilings higher than 8 feet, you'll want an air cleaner rated for a larger room."

Lots More Information Related Articles Sources
  • "ANSI/AHAM AC-1: Method for Measuting the Performance of Portable Household Electric Room Air Cleaners." Association of Home Appliance Manufacturers. http://www.cadr.org/consumer/news/Scope_of_AC_1_Portable_Room_Air_Cleaners_Final1.pdf
  • Barrett, Stephen, MD. "Court Dismisses Sharper Image Lawsuit against Consumers Union." QuackWatch.org. http://www.quackwatch.org/14Legal/ionicbreeze.html
  • "Ozone Generators that are Sold as Air Cleaners: An Assessment of Effectiveness and Health Consequences."Environmental Protection Agency. http://www.epa.gov/iaq/pubs/ozonegen.html
  • "Slow adoption takes wind out of air purification sales." DSN Retailing Today, Nov 5, 2001. http://www.findarticles.com/p/articles/mi_m0FNP/is_21_40/ai_79867474
  • "Specification for HEPA Filters Used by DOE Contracts." Department of Energy. http://www.eh.doe.gov/hepa/docs/std3020.pdf
  • Weise, Elizabeth. "Ionizing air cleaners get zapped." USAToday, April 4, 2005. http://www.usatoday.com/news/health/2005-04-04-air-filters_x.htm
  • "What is AHAM's Clean Air Delivery Rate (CADR)?" Association of Home Appliance Manufacturers. http://www.cadr.org/consumer/what_is_cadr.html
  • "What is a Cleanroom?" Intel. http://www.intel.com/education/cleanroom/index.htm

Tuesday, August 5, 2014

Air Purifier Criticism



Air Purifiers | home.howstuffworks.com/air-purifier.htm

Ionizing and ozone air purifiers have come under fire from consumer groups, consumer review magazines and even the Environmental Protection Agency (EPA). Two claims are at the heart of the controversy: that these types of air purifiers are not effective at removing contaminants from the air and that ozone generators could harm people.

In 2002 and 2003, Consumer Reports tested several different air purifiers, including Sharper Image's Ionic Breeze. Independent researchers checked and verified the tests. Consumer Reports found that ionizing air purifiers like the Ionic Breeze created "almost no measurable reduction in airborne particles" [source]. Sharper Image sued Consumer Reports. The magazine later conducted further tests in response to Sharper Image's complaints and still found the Ionic Breeze to be ineffective. Sharper Image's lawsuit against Consumer Reports was thrown out, and the company was forced to pay more than half a million dollars to cover Consumer Reports' legal fees.

The EPA has also released information warning the public about air purifiers that generate ozone. Because the manufacturers are not making specific medical claims about these devices, they do not need Food and Drug Administration (FDA) approval. In fact, there really is no government oversight over consumer air purifiers other than the HEPA standard, so any manufacturer claiming that such a device is "government approved" or "government certified" is misleading consumers. However, concerns about the generation of ozone in people's homes have led the EPA to conduct studies on the subject.

All ionizing purifiers generate some ozone, but ozone generators are specifically designed to release the gas, and in much larger quantities than ionizing purifiers. The EPA states, "Relatively low amounts [of ozone] can cause chest pain, coughing, shortness of breath, and, throat irritation. Ozone may also worsen chronic respiratory diseases such as asthma and compromise the ability of the body to fight respiratory infections" [source]. Their studies indicated that even when used according to manufacturer instructions, many ozone-generating purifiers created ozone concentrations in a house in excess of public health limits. They also found that ozone as used in a household air purifier "has little potential to remove indoor air contaminants." They also noted that ozone has a tendency to react with chemicals and form by-products that are potentially even more dangerous.

The EPA's final recommendation on the matter: "The public is advised to use proven methods of controlling indoor air pollution." Ozone generators are not among the proven methods listed on its site.

Sunday, August 3, 2014

Types of Air Purifiers



Air Purifiers | home.howstuffworks.com/air-purifier.htm

Filters

Some air purifiers clean the air by passing it through a filter that removes particles. These are sometimes called air cleaners. In households, these filters are usually part of the heating or cooling system. A filter housing is installed between the air return duct and the furnace. The filter cartridge slides into this housing, so all air flowing into the furnace is filtered. Not only does this remove contaminants from the air, it prevents damage to the furnace due to dust and dirt build-up. Filters can also be placed into the air return vents in each room of a house. Typical materials include foam, cotton, fiberglass or synthetic fibers. In part, the density of the filter material limits the size of the particles that pass through -- very dense filters have smaller gaps, allowing it to catch very small particles. Pleated filters work best because of the increased surface area for catching particles. However, filters are capable of catching particles even smaller than the smallest gaps in the filter material. Air filters can be expensive, and you have to replace them to keep them functioning properly (some filters are washable). They also restrict air flow through the system, causing a drop in overall efficiency.

HEPA (High Efficiency Particulate Air) filters meet a Department of Energy standard for removing particles from the air. The filter can consist of any material as long as it meets this standard -- penetration of less than 0.03 percent of particles 0.3 micrometers in size or larger [source]. The filter must also allow a specific amount of air to flow through, which varies by the size of the filter. The ULPA (Ultra-Low Penetration Air) standard is even stricter. In addition to their familiar household uses cleaning air of allergens and dust particles, advanced HEPA filters are used by the nuclear power industry.

Ionizing Purifiers

These air purifiers use a method called corona discharge to create charged molecules called ions. Most atoms in the air have a neutral charge -- they have the same number of negatively-charged electrons as positively-charged protons. The corona discharge is a small but intense electrical field. Molecules passing through it will pick up an additional electron, giving the molecule a negative charge, or it may have an electron knocked off of it, giving it a positive charge. Larger particles in the air, such as dust or other contaminants, are more likely to be ionized because they make larger targets for the electrons as they pass through the corona discharge.

Once a particle is charged, it will be attracted to anything with the opposite charge. Two metal plates within the purifier are charged (one negative, one positive) to attract these particles. Also, particles in the air will be drawn to each other if they have opposite charges. As the particles clump together, they get heavier and eventually they settle out of the air.

Ozone Generators

An ozone generator works much like an ionizing purifier, but it is designed to alter molecules of oxygen and turn them into ozone, a molecule made up of three oxygen atoms. Oxygen in the atmosphere exists as dioxygen, a molecule made up of two oxygen atoms. When these molecules are exposed to a corona discharge or UV light, some of the dioxygen molecules split into separate oxygen atoms (free oxygen). While most of this oxygen recombines into dioxygen, some of the atoms form ozone.

Manufacturers of these devices claim that the ozone deodorizes and disinfects the air. Many also claim other health benefits from the presence of ozone. However, there is strong evidence that ozone does not accomplish air purification. Ozone is also known to be a toxic gas. It is not a very stable molecule -- it reacts readily with other chemicals that may be in the air, forming new compounds that can be more dangerous than the ozone itself. Ozone also oxidizes metals and causes corrosion. The same process that creates ozone also creates nitrogen oxides, leading to further reactions with compounds present in the air and with ozone itself.

Adsorbents

Many purifiers incorporate an adsorbent material to take care of odors, fumes and chemicals in the air. Adsorption (not absorption) is the process of one substance being trapped on the surface of another substance. The most common adsorbent is activated charcoal, which is extremely porous and has many microscopic "nooks and crannies" to trap passing molecules. Larger particles are simply stuck in the many pores in the charcoal. Electrostatic attraction draws some substances into the pores. Certain substances react chemically with the charcoal and bond to it. The high surface area of the charcoal gives it lots of bonding places. The process used to make the charcoal can affect which compounds it is better at adsorbing.

UV Light

Ultraviolet radiation renders certain micro-organisms sterile (and harmless). Some air purifiers feature a UV light that bathes the air as it passes through, eliminating the potential harm of airborne bacteria and viruses.

Friday, August 1, 2014

How Air Purifiers Work



Air Purifiers | home.howstuffworks.com/air-purifier.htm

Americans spend an estimated $250 million annually on air purifiers for their homes, with asthma and allergy sufferers responsible for most of the sales [source]. But scientific studies and testing reveal that many purifiers aren't effective at all, and some may be causing harm.

The notion of purifying air has merit, however. The air inside the typical home is generally dirtier than the air outside, because a house can be a source of air contaminants. Moisture can lead to the development of mold and mold spores. Forced-air heating and cooling systems circulate dust particles and bacteria throughout the house. Pets shed fur and give off dander, while smokers pump toxins into the air. Pollen and other outdoor allergens can blow in through open doors and windows (or through a window or door screen) and become caught in carpet or upholstery.

The end result is that the average house tends to concentrate contaminants in greater quantities than the outdoors. This concentration isn't usually too harmful for a healthy person, but children and people with allergies and respiratory difficulties can experience ill effects. Reducing the level of contaminants can help alleviate some of these problems and using an air purifier is one way to do it.

In the next section, we'll look at the five basic types of air purifiers available on the market today.

Sunday, July 27, 2014

台灣獨創博士韋爾空氣清新機上市



堪稱「台灣獨創、全台第一、雙機一體」的空氣清新機問市了,愛瑪瑞實業公司獨創「博士韋爾-活氧電離式空氣清淨機」,一次就擁有空氣清淨機加上全熱交換機的雙重功效,標榜即使不用開窗也能擁有清新乾淨好空氣。

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