家用飲水機選購指南 RO飲水機比較 Philips/Yohome/Acerpure

家用飲水機

家用飲水機哪一部較好?香港的自來水經過處理後實際上已經達到可以直接飲用的水質標準。然而,由於自來水喉管老舊或儲水塔清潔不足,可能會導致細菌及金屬物質混入自來水中,令不少人習慣性地將自來水煮沸,或使用飲水機進一步過濾水源才放心飲用。市面上有不同款式的家用飲水機,例如近期熱門的RO飲水機,本文將解釋不同類型的過濾原理,包括PP濾芯、活性碳和RO濾芯的差異,協助大家選擇,從而為家人,尤其是嬰幼兒,提供安全衛生的飲用水。

家用飲水機選購指南

家用飲水機好處/壞處

家用飲水機 (又叫淨水器) 好處在於提供方便快速的飲用水,無需煮沸即可直接飲用。它可以過濾自來水中的雜質及有害物質,提供更加純淨的飲用水,或有助保障家人的健康。此外,家用飲水機還可以節省時間,避免了「煲水」的麻煩。

然而,家用飲水機也存在一些壞處。首先,購買和安裝家用飲水機需要一定成本及空間,尤其是對於一些小型家庭來說可能不太划算。其次,家用飲水機需要定期更換濾芯及進行清潔和保養,增加了後期的維護成本及工夫。最後,如果沒有定期更換濾芯或保養不當,可能會影響過濾效果,導致飲用水的品質下降,甚至可能對健康造成潛在威脅。

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家用飲水機過濾水與煲過的水有甚麼不同?

從小「阿媽教落」要喝煮沸過的水,即是水煮沸並保持在100攝氏度15-20分鐘,確保能夠殺滅有害的腸道致病菌和病毒,但並不能有效降低或消除水中的氯,而且水中含有的泥沙、沉澱物、有機物和重金屬都無法通過加熱去除。從水塘到家中水龍頭,主要經過「集水」、「淨水」和「配水」三個階段,許多汙染就容易在這三階段慢慢累積,包括輸水管網污染、水塔供水污染、屋苑大廈水管老舊等。所以,大家開始意識到煮沸的水不是100%安全,才令家用飲水機興起。而要去除水中各類雜質,便要研究一下濾芯。

家用飲水機濾芯及原理

家用飲水機濾芯:活性碳

活性碳過濾利用其多孔原理及廣大的面積做吸附作用,用以去除水中氯化物,有機雜質,異色異味。

家用飲水機濾芯:中空纖維膜

中空絲膜是由成千上百根細小的中空纖維絲組成,孔徑一般介於0.01到0.1微米。透過「高壓」逼迫分子穿過, 進而達到濃縮和分離水中大分子物質、微粒、有機物、殘留細菌、藻類等。

家用飲水機濾芯:RO逆滲透

逆滲透原理是通過在原水端加壓,讓純淨的水分子穿透薄膜,產生純水同時將雜質和有害物質隔絕。薄膜微孔極小(0.0001微米)能有效過濾細菌、病毒和化學有毒物質。

家用飲水機濾芯:UV紫外線

UV殺菌光波長在225-275μm,峰值在254μm。這種紫外線能破壞微生物核酸結構,從而強烈殺滅細菌。廣泛應用於醫療器材消毒,能有效淨化水質,殺滅大腸桿菌、痢疾病菌等。

家用飲水機濾芯過濾功能比較

目前市面上提供消除細菌或病毒的濾芯,包括活性碳、中空纖維膜、RO逆滲透膜以及UV紫外線光等四種類型。這些濾芯各自具有獨特的過濾功能,能有效去除水中的不同雜質,提供更純淨的飲用水。

濾芯 鐵鏽沙泥 氯/三鹵甲烷 細菌 微生物/病毒 重金屬 水垢(硬水)
活性碳

Activated carbon filter

O O O X X/O X
中空纖維膜

Hollow fiber filter

O X O X O X
RO 逆滲透膜

Reverse osmosis

O O O O O O
UV紫外線光

UltraViolet Filter

X X O O X X

以過濾功能較佳的RO飲水機為例,RO逆滲透膜能有效濾除各類水中雜質,使得飲用水可以達到生飲水標準。然而,由於RO逆滲透濾芯是一種精密的濾水裝置,為了維持其過濾效能,通常需要搭配其他濾芯進行協助。在RO逆滲透濾芯之前,通常會配置PP濾芯及活性碳濾芯,這些濾芯可以先攔截水中體積較大的懸浮物質及餘氯,以保護RO逆滲透濾芯的使用效能。

飲水機確實是相當方便的設備,但傳統的飲水機使用桶裝水供水,長時間放置可能存在衛生安全隱患。為解決這些問題,近10年在日本、台灣等地興起含生飲淨水功能的飲水機,不僅擁有淨水功能,還能提供冰、溫、熱三種溫度的飲用水。若家中常有泡茶、泡奶粉等冷熱水需求,建議考慮安裝生飲飲水機,方便快捷地取得不同溫度的飲用水。

家用飲水機如何選擇

第一步:評估家中生活環境

在挑選飲水機時,可以根據外觀和安裝位置來選擇適合的型號。各大廠商針對不同需求提供多種款式供選擇,包括廚下型淨水器、桌上型淨水器和水龍頭濾水器等。若家中有高齡長者、嬰幼兒或病患者,對水質要求較高,建議在飲水機中添加中空絲膜濾芯,以確保水質更純淨。如果家庭成員偏好飲用不含礦物質的水,且經濟許可,則可考慮直出式RO濾芯飲水器。

最簡單的方法是評估家庭成員人數,大致可選出合適的機型。例如,家中成員3-5人適合廚下型或桌上型飲水機;而中大型家庭5人以上成員則適合購買落地型飲水機。再檢視家中哪個位置適合擺放飲水機。

第二步:評估家庭的食水用量

一般來說,成年人一天飲水量可按體重計算,每一公斤的體重需要攝取約30ml的水,而成年人一天的飲水量大約在1800至2500ml之間。根據這個計算,桌上型飲水機的容量約為3至5L,大致可以提供1至3天的飲用水;落地型飲水機的容量一般在10至16.5L之間,可以提供4至8天的飲用水。如選擇非直接接駁水源的飲水機,可從這個方向大約評估填充水箱的頻密程度。

第三步:按全家人的生活習慣選功能

若全職媽媽想節省每餐的煮飯時間,也節省每次煲水的時間,可考慮廚下型飲水機,直接連在水龍頭不僅節省空間,入廚體驗及湯水味道也大大提升,輕鬆方便地取得熱水。

不同機型的飲水機可分為「冰溫熱飲水機」、「溫熱飲水機」、「冰熱飲水機」等類型。在選購時,關鍵是根據家庭成員的飲水習慣來決定。例如他們習慣用哪種溫度的水?是沸水、熱水、常溫水、冷水,還是冰水?這將有助選擇適合的飲水機型號,滿足家人的需求。

家用飲水機推介

現今大多數即熱式飲水機都具有過濾、即飲和即熱的功能,無需等待及反覆加熱。這對於那些需要經常調製不同溫度的飲品的人來說特別方便,不需要等待煮沸再冷卻。此外,部份即熱式飲水機沒有內膽,不易積累水垢和細菌,清洗時只需倒入白醋或檸檬水即可,清洗十分方便。再者,喝熱水時不需保溫,有效節能省電。而現今很多即熱式飲水機具有安全設備,例如無水時自動斷電。

6部家用飲水機比較

飲水機 溫度及功能 過濾方式及儲水容量 兒童安全鎖 建議零售價
Philips 家用飲水機

Philips RO純淨飲水機ADD6910/90

外號「沖奶神器」

4 段溫度可選:室溫、45 °C、85 °C以及 95 °C,3秒加熱到指定溫度。

設有缺水提示、更換濾芯及過熱提示

RO 逆滲透濾芯 及 UV-LED 自動消毒水箱

4 公升分離式儲水箱

HK$2,788
Bruno 家用飲水機

Bruno BAK801 即熱飲水機

5段溫度可選 :室溫、50°C、80°C、90°C 及 100°C,3秒加熱到指定溫度。 2.5公升分離式儲水箱 HK$998
Yohome 家用飲水機

RO淨水微量元素智能溫控直飲水機2.0 Pro

溫度可選:室溫、45°C、85°C 及 100°C,3秒加熱到指定溫度,45°C至100°C可每一度自由調節。

設有自動清潔模式及更換濾芯提示

5合1 RO 富鍶濾芯 (PP棉、活性炭、無紡布精濾、RO反滲透、礦化)

5公升原水箱+2個1.9公升分離式儲水箱

無註明 HK$1,999
Acerpure 家用飲水機

Acerpure WP742-40W aqua 冰溫瞬熱RO濾淨飲水機

溫度可選:10℃冰水、常溫水、即出40~95℃自訂溫度,3秒加熱到指定溫度。

Smart Wash 自動清洗所有管線

RO 逆滲透濾芯、PCF活性碳濾芯、GAC富礦物質濾芯 、UVC LED 紫外線燈滅菌

TDS即時水質監測

6公升原水箱+2.7公升濃水箱

HK$5,980
樂信家用飲水機

RASONIC RWD-JG250 即熱水機

3段溫度可選 :室溫、70°C 及約 100°C,3秒加熱到指定溫度。

設有缺水提示及過熱提示

活性炭濾芯

1.7公升分離式儲水箱

HK$788
小米家用飲水機

即熱式RO純淨飲水機 Pro BHR8176GB

溫度可選:常溫、45°C 嬰兒奶粉、85°C 咖啡及沸水,可透過手機App在 40°C 至 95°C 範圍內逐度調節水溫。 RO 逆滲透濾芯及 PPC (PP 棉、過濾碳棒及阻垢劑) 濾芯

4.4公升原水箱+1.8公升廢水箱

無註明 HK$1,699

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家用飲水機常見問題

家用飲水機有哪些款式?

主要有廚下型淨水器、桌上型淨水器及水龍頭濾水器。

家用飲水機常見的過濾方式有哪些?

常見的過濾方式有:活性碳、中空纖維膜、RO逆滲透、UV紫外線,可以過濾的物質各有不同。

家用飲水機能否供應熱水?

不少家用飲水機都提供即熱功能,可在大約3秒內供應不同溫度的暖水或熱水。

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