M419070 五、新型說明： 【新型所屬之技術領域】 本創作是有關於一種儲水式電熱水器（electric storage water heater)，且特別是有關於一種應用於儲水式電熱水器的熱交換器（heat exchanger)° 【先前技術】 目前較為常見的電熱水器大致上可區分為即熱式電熱水器 (electric instantaneous water heater )與儲水式電熱水器兩種。其中，即 熱式電熱水器通常不具有儲存熱水的功能，且其所提供的熱水溫度較 容易隨著水流量的增加而降低，而儲水式電熱水器則可藉由其儲水槽 (water-storagetank)來儲存熱水。因此，相較之下，儲水式電熱水器 可提供溫度較為穩定的熱水。 圖1繪示出習知技藝中的一種儲水式電熱水器的結構示意圖。請 參考圖1，儲水式電熱水器1〇〇包括一封閉式儲水槽（tank) 11〇、一 進水口（water inlet) 120、一 出水口（water outlet) 130 以及一電加熱 管140。進水口 120鄰近於儲水槽no的底部，而出水口 13〇則鄰近於 儲水槽110的頂部。再者，電加熱管14〇大致上水平地組裝於儲水槽 110的侧壁，並位於進水口 120與出水口 13〇之間，且其可用以直接對 由進水口 120流進儲水槽11〇中的水加熱至一預設溫度（presetting temperture) ° 一般來說，封閉式儲水槽11〇中通常會儲滿水，且水的體積會隨 著水溫上升而逐漸增加。因此，封閉式儲水槽11〇所承受的壓力通常 會隨著儲存於儲水槽110中的水的溫度上升而逐漸增加。也因此，封 閉式儲水槽110通吊需使用厚度較厚的金屬板來製作，以使其可承受 較大的壓力。而且，部分的儲水式電熱水器100更會在儲水槽上 5 組裝一洩壓閥（未繪示），以避免儲水槽110承受過大的壓力。 值得注意的是’上述的儲水槽110會具有較高的製作成本及材料 成本。另外，當浪壓閥被堵塞而失效時，儲水槽110亦容易因承受過 大的屬力而破裂或漏水。再者’财槽11G在長期使驗容易因金層 疲勞（metal fatigue)而由焊接處開始破裂或漏水。除此之外，為了降 低應力集中效應（stress concentration effect)，儲水槽no的外型通常只 能設計成圓桶狀。 另外，在習知技藝中，電加熱管140是用以直接對由進水口 12〇 流進儲水槽110中的流體加熱。因此，儲水式電熱水器1〇〇通常僅能 用以加熱不可燃性流體，以避免流體在加熱時被點燃而發生意外。再 者’流體在党熱後，其雜質容易附著於電加熱管14〇的管壁上。因此， 儲水式電熱水器100較不適用於加熱食品級的流體。而且，在使用一 段時間後，電加熱管140對流體的加熱效率亦容易因電加熱管14〇的 管壁上累積較多的雜質而降低，進而縮短電加熱管14〇的使用壽命。 【新型内容】 為了解決上述問題’本創作提供一種熱交換器，其可降低儲水式 電熱水器的儲水槽的製作成本及材料成本。 為了解決上述問題’本創作更提供一種儲水式電熱水器，其儲水 槽因所承受的壓力較小而較不容易產生破裂或漏水的問題。 本創作提供一種適用於一儲水式電熱水器的熱交換器，包括一内 管（inner pipe )、一熱交換管（heat exchange pipe )、一驅動裝置（driving device)以及一外管（outer pipe)。内管具有一開放端（open end)' — 封閉端（close end)以及一側壁。熱交換管纏繞於（winded around)側 壁上，用以傳遞一第一工作流體（working fluid)，並具有配置於内管 外的一進口端（inlet end)以及一出口端（outlet end)。驅動裝置配置 M419070 於内管中，連接於熱交換管，並具有—排放口（drain)。外管具有一第 一知以及一弟一端，其中開放端由弟一端套入外管中，以將部分的側 壁與部分的熱交換管容納於外管中，並使排放口套入第二端中。第一 工作流體適於透過驅動裝置驅動一第二工作流體流動，以使第二工作 流體依序流經第一端與開放端而流進内管中，並在通過驅動裝置後經 由排放口流動至外管外。 在本創作的一實施例中，上述的驅動裝置更包括一第一葉輪 (paddle wheel)、一第二葉輪以及一轉軸（shaft)。第一工作流體流經 第一葉輪，而第二工作流體流經第二葉輪。轉軸連接第一葉輪的轴心 與第二葉輪的軸心。 在本創作的一實施例中，上述的驅動裝置更包括一噴嘴（n〇zzle )。 熱交換管透過喷嘴連接於驅動裝置，且第一工作流體經由喷嘴流向第 一葉輪。 在本創作的一實施例中，上述的第一葉輪具有多個環繞第一葉輪 的軸心的第一扇葉（blade)。各第一扇葉與一通過對應的第一扇葉鄰近 於弟一葉輪軸心的一側的控線之間具有一第一夾角，且這些第一夾角 大於或等於15度並小於或等於45度。 在本創作的一實施例中，上述的第二葉輪具有多個環繞第二葉輪 的轴心的第二扇葉。各第二扇葉與一通過對應的第二扇葉鄰近於第二 葉輪軸心的一側的徑線之間具有一第二夾角，且這些第二炎角大於或 等於20度並小於或等於50度。 在本創作的一實施例中，上述的轉軸的一端固設於第二葉輪的軸 心’而第一葉輪套設於轉軸，並適於隨著轉軸轉動。 在本創作的一實施例中，上述的轉軸的材質為不銹鋼或陶曼。 在本創作的一實施例中’上述的進口端由封閉端穿出内管。 在本創作的一實施例中’上述的出口端由封閉端穿出内管。 7 在本創作的一實施例中，上述的熱交換管纏繞於内管部分的内表 面，由開放端穿出内管，並纏繞於内管至少部分的外表面。 在本創作的一實施例中，上述的第一端的孔徑大於第二端的孔徑。 本創作更提供一種儲水式電熱水器，用以加熱一第一工作流體， 其包括一儲水槽、一熱交換器以及一第二工作流體。熱交換器配置於 儲水槽中，並包括一内管、一熱交換管、一驅動裝置以及一外管。内 笞/、有開玫端、一封閉端以及一侧壁。熱交換管纏繞於側壁上，用 以傳遞第一工作流體，並具有連通至儲水槽外的一進口端以及一出口 端。驅動裝置配置於内管中，連接於熱交換管，並具有一排放口。外 ‘ 有第一端以及一第一端，其中開放端由第一端套入外管中，以 將部分的側壁與部分的熱交換管容納於外管中，並使排放口套入第二 編中。第二工作流體儲存於儲水槽中。第一工作流體適於透過驅動裝 置驅動第二工作流體流動，以使第二工作流體依序流經第一端與開放 端而流進内管中，並在通過驅動裝置後經由排放口流動至外管外。 在本創作的一實施例中’上述的驅動裝置更包括一第一葉輪、一 第二葉輪以及一轉軸。第一工作流體流經第一葉輪，而第二工作流體 机經第二葉輪。轉軸連接第一葉輪的軸心與第二葉輪的軸心。 在本創作的一實施例中，上述的驅動裝置更包括一喷嘴❶熱交換 管透過噴嘴連接於驅動裝置，且第一工作流體經由噴嘴流向第一葉輪。 在本創作的一實施例中，上述的第一葉輪具有多個環繞第一葉輪 的軸心的第一扇葉。各第一扇葉與一通過對應的第一扇葉鄰近於第一 葉輪軸心的一側的徑線之間具有一第一夾角，且這些第一夾角大於或 等於15度並小於或等於45度。 在本創作的一實施例中，上述的第二葉輪具有多個環繞第二葉輪 的軸心的第二扇葉》各第二扇葉與一通過對應的第二扇葉鄰近於第二 ，輪軸心的一側的徑線之間具有一第二夾角’且這些第二夾角大於或 等於2〇度並小於或等於50度。 8 M419070 在本創作的一實施例中，上述的轉軸的一端固設於第二葉輪的軸 心，而第一葉輪套設於轉軸，並適於隨著轉轴轉動。 在本創作的一實施例中，上述的轉軸的材質為不銹鋼或陶瓷。 在本創作的一實施例中，上述的進口端由封閉端穿出内管。 在本創作的一實施例中，上述的出口端由封閉端穿出内管^ 在本創作的一實施例中，上述的熱交換管纏繞於内管部分的内表 面，由開放端穿出内管，並纏繞於内管至少部分的外表面。 在本創作的一實施例中，上述的熱交換器直立地（erectly)配置於 儲水槽中，其中開放端朝向儲水槽的一底部，而封閉端朝向儲水槽的 一頂部。 在本創作的一貫施例中’上述的儲水槽包括一外桶（〇uterbarrei)、 内桶（inner barrel)以及一保溫層（insulating layer)。熱交換器與第 一工作流體配置於内桶中。保溫層配置於内桶與外桶之間，且進口端 與出口端依序貫穿内桶、保溫層與外桶而連通至儲水槽外。 在本創作的一實施例中，上述的儲水槽為一開放式儲水槽。 在本創作的一實施例中’上述的内桶的材質為塑膠。 在本創作的一實施例中，上述的保溫層的材質包括聚胺甲酸酯 (polyurethane，PU ) 〇 在本創作的一實施例中，上述的儲水槽的外形大致上呈長方柱狀。 在本創作的一實施例中，上述的儲水式電熱水器更包括一加熱裝 置（heatingapparatus)，其直立地配置於儲水槽中，用以加熱第二工作 流體 在本創作的一實施例中，上述的加熱裝置為電加熱管或熱泵（heat pump )。 9 在本創作的一實施例中’上述的儲水式電熱水器更包括一數位式 微電腦控制器（digitalmicrocomPutercontr〇Uer)’其配置於儲水槽，用 以顯示第二工作流體的溫度’並根據一環境溫度（ambienttemperature) 啟動或關閉加熱裝置。 在本創作的一實施例中，上述的第一端的孔徑大於第二端的孔徑。 在本創作中，儲水式電熱水器可使用開放式儲水槽，以使儲水槽 所承受的壓力不會隨著儲存於儲水槽中的水的溫度上升而逐漸增加。 因此’儲水槽不僅較不容易因承受過大的壓力而破裂或漏水，其外型 亦可不侷限於圓桶狀。再者，儲水槽不僅可不需要配備有洩壓閥，亦 可使用較薄的金屬板或塑膠材質來製作，以降低其製作成本及材料成 本〇 另外，本創作的儲水式電熱水器是透過第二工作流體對熱交換器 中的第一工作流體間接加熱。因此，第一工作流體不僅可以是不可燃 性流體’亦可以是易燃性流體。 除此之外，儲存於儲水槽中的第二工作流體大致上不會流失。因 此’儲水式電熱水器可不需要補充新的第二卫作流體。也因此，在長 期使=後’财射的雜質量也不會持續累積。如此—來，儲水式電 .、’、尺器不僅可用以加熱食品級的流體，其加熱效率與使 會較 玄县維接。 ’下文特舉實施例， 為讓本創作的上述特徵和優點能更明顯易懂 並配合所附圖式，作詳細說明如下。 【實施方式】 圖：圖3 一實施例的—種儲水式電熱水器的結構示意 儲水式電熱水器勘可用以加熱一第-工作流體（未^示於圖2與圖 儲水式魏⑼*〜的敍觀賭構綠®。請參考® 2與圖3 3 M419070 - 中，僅以箭頭202a’2〇2b標示出其流向），且其可包括一儲水槽21〇、 —熱交換器220、一第二工作流體230以及一加熱裝置240。 第一工作流體例如是自來水（tap water)，而第二工作流體23〇則 例如是儲存於儲水槽210中用以作為傳熱媒介（heat medium)的水。 再者，儲水槽210可以是-外型大致上呈長方柱狀的開放式儲水槽， 且其可包括一外桶212、一内桶214以及一保溫層216。其书，外桶212 可以金屬薄板製作而成，而内桶214可以塑膠材質製作而成。另外， 保溫層216配置於外桶212與内桶214之間，用以保持儲存於儲水槽 210中的第二工作流體230的溫度，且其可以聚胺甲酸酯（或稱為扣 鲁 發泡樹脂）材質製作而成。 此外，熱交換器220及加熱裝置240可直立地配置於儲水槽21〇 中，其中加熱裝置240可為電加熱管、熱泵及其組合，且其可用以將 儲存於儲水槽210中的第二工作流體230加熱至一預設溫度。然後， 第二工作流體230可再透過熱交換器220與第一工作流體進行;熱交 換，以間接加熱第一工作流體。 更詳細而言’熱交換器220包括一内管222、一熱交換管224、一 驅動裝置226以及一外管228。内管222具有一開放端222a、一封閉 • 端222b以及一側壁2222。開放端222a朝向儲水槽210的一底部21〇a， 而封閉端222b則朝向儲水槽210的一頂部21〇b。再者，熱交換管224 纏繞於側壁2222上，其可用以傳遞第一工作流體，並具有連通至儲水 槽210外的一進口端224a以及一出口端224b。 另外，驅動裝置226配置於内管222中，並連接於熱交換管224， 以使第一工作流體可透過驅動裝置226驅動第二工作流體23〇流動。 此外，外管228具有一第一端228a以及一第二端228b，其中第一端 228a朝向儲水槽210的頂部210b，而第二端228b朝向儲水槽21〇的 底部210a ’且第二端228b的孔徑小於第一端228a的孔徑。再者，開 放知222a由第·一端228a套入外官' 228中，以將部分的側壁2222盘部 11 M419070 分纏繞於側壁2222上的熱交換管224容納於外管228中，並使驅動裝 置226的一排放口 2268套入第二端228b中。 於此實施例中’熱交換管224依序貫穿外桶212、保溫層216與内 捅214後，由封閉端222b穿入内管222中，並纏繞於側壁2222部分 的内表面。之後，熱交換管224再由開放端222a穿出内管222外，並 纏繞於側壁2222部分的外表面。接著’熱交換管224再由封閉端222b 穿入内管222中’並連接至驅動裝置226的左半部。然後，熱交換管 224再由驅動裝置226的左半部向外連接，並依序貫穿封閉端222b、 内桶214、保溫層216與外桶212後連通至儲水槽210外。 另外’此實施例中的驅動裝置226包括一第一葉輪2262、一第二 葉輪2264、一用以連接第一葉輪2262的軸心與第二葉輪2264的轴心 的轉軸2%6、上述的排放口 2268以及一喷嘴2269。第一葉輪2262與 第二葉輪2264可以塑膠材質製作而成，而轉軸2266則可以不銹鋼材 質、陶瓷材質或是其他膨脹係數小於不銹鋼或陶瓷的耐磨材質製作而 成，以使其可具有較佳的強度。如圖3所示，第一葉輪2262配置於驅 動裝置226的左半部中，且熱交換管224透過喷嘴2269連接於驅動裝 置226的左半部。再者，第二葉輪2264配置於驅動裝置226的右半部 中，且排放口 2268由驅動裝置226的右半部向外連接。另外，轉軸2266 的-端E]設;輪2264的如H葉輪挪2恥設於轉轴 2266 〇 圖4A繪不出圖3中的第一葉輪的左側視圖，而圖4B繪示出圖3 中的第二葉輪的右側視圖。請參考圖3、圖4A與圖4B，第一葉輪2262 具有多個環·軸心的第-絲m，而第二葉輪屢具有多:環繞 其軸心的第二扇葉B2。第一扇_B1與一通過其第一側si的徑線 ^間具有一第一夾角而第二扇葉B2與-通過其第二側S2的經線 之間具有一第二失角02。於此實施例中，第一夾角Θ1的較佳 =如是大於或等於15度並小於或等於45度，而第二夾伙的較佳= 又例如是大於鱗於2G度並小於鱗於5()度。此時，第—工作流體 12 M419070 透過驅動裝置226驅動第二工作流體230流動的效率會較佳。 基於上述，由進口端224a流進熱交換管224中的第一工作流體可 沿著熱交換管224流動，並經由喷嘴2269流動至驅動裝置226的左半 部。之後’第一工作流體會再經由出口端224b流動至熱交換管224外。 而且’第一工作流體流經驅動裝置226的左半部時會驅動第一葉輪2262 轉動，並透過轉軸2266帶動第二葉輪2264轉動。此時，第二葉輪2264 會帶動内管222中的第二工作流體230流進驅動裝置226的右半部中， 並經由排放口 2268流動至儲水槽210的底部210a。同時，儲存於儲水 槽210中的第二工作流體23〇亦會依序流經第一端22如、外管：烈與 内管222之間的間隙與開放端222a流進内管222中。 值得注意的是，儲存於儲水槽21〇中的第二工作流體23〇會先被 加熱裝置240加熱至預設溫度，且流動於熱交換管224中的第一工作 流體會與流動於熱交換管224外的第二工作流體23()進行熱交換。因 此，由出口端224b流出熱交換管224外的第一工作流體的溫度會高於 ，進口端224a流進熱交換管224中的第一工作流體的溫度。也就是 ，，加熱裝置240可透過熱交換管224與第二工作流體230間接加熱 第厂工作流體。另外，如圖3所示，喷嘴挪9連接於熱交換管故的 孔徑應大於其連接於驅動裝置226的左半部的孔徑，以使通過喷嘴2269 後的第一工作流體會具有較高的工作壓力。 相較於習知技藝中所使用的封閉式儲水槽，儲水槽21〇 (開放式儲 水=可不需要儲滿第二工作流體23〇 (水）。因此，儲水槽21〇只需 承受第二工作流體23〇的重量，而不f承受第二卫作流體23q受熱膨 脹，所產生的壓力。也因此，儲水槽21G所承受的壓力會較小，且較 不谷易因承受過大的壓力而破裂或漏水。如此一來，不僅儲水槽21〇 ^外型可不舰於圓桶狀’且内桶214亦可以較薄的金屬板或塑膠材 來製作，以降低健水槽21〇的製作成本及材料成本。 除此之外’加熱裝置240可透過熱交換管224與第二工作流體23〇 13 M419070 體。因此’第一工作流體不僅可以是不可燃性流 第流體。而且’第二工作流體230為用以間接加熱 ^體的傳熱媒介，其大致上不會流失，亦可不需要補充。因 2，儲水槽2U)巾第二工作流體23〇的雜f量並不會越來越多。也因 ，，儲水式電熱水器2⑻不僅可用以加熱食品級的流體，其料換效 率與使用壽命也會較料轉。此外，制者更可藉由控·一工作 ，體的流量來難第-葉輪施與第二葉輪施的轉速，進而調整 第一工作流體由出口端224b流出熱交換管224外時的溫度。M419070 V. New description: [New technical field] The present invention relates to an electric storage water heater, and in particular to a heat exchanger applied to a storage type electric water heater (heat Exchanger) ° [Prior Art] At present, the more common electric water heaters can be roughly divided into electric electric water heaters and storage electric water heaters. Among them, the instant electric water heater usually does not have the function of storing hot water, and the hot water temperature provided by the electric water heater is relatively easy to decrease as the water flow rate increases, and the water storage type electric water heater can be used by the water storage tank (water) -storagetank) to store hot water. Therefore, in comparison, the storage type electric water heater can provide hot water with relatively stable temperature. FIG. 1 is a schematic view showing the structure of a water storage type electric water heater in the prior art. Referring to Figure 1, the water storage type electric water heater 1 includes a closed tank 11 〇, a water inlet 120, a water outlet 130, and an electric heating tube 140. The water inlet 120 is adjacent to the bottom of the water storage tank no, and the water outlet 13 is adjacent to the top of the water storage tank 110. Furthermore, the electric heating tube 14 is assembled substantially horizontally on the side wall of the water storage tank 110 and between the water inlet 120 and the water outlet 13〇, and it can be used to directly flow into the water storage tank 11 from the water inlet 120. The water in the water is heated to a preset temperature (presetting temperture). Generally, the enclosed water storage tank 11 is usually filled with water, and the volume of water gradually increases as the water temperature rises. Therefore, the pressure applied to the closed water storage tank 11 is generally gradually increased as the temperature of the water stored in the water storage tank 110 rises. Therefore, the closed type water storage tank 110 is required to be made of a thick metal plate so that it can withstand a large pressure. Moreover, part of the water storage type electric water heater 100 further assembles a pressure relief valve (not shown) on the water storage tank 5 to prevent the water storage tank 110 from being subjected to excessive pressure. It is worth noting that the above-mentioned water storage tank 110 will have a high manufacturing cost and material cost. In addition, when the surge valve is blocked and fails, the water storage tank 110 is also prone to breakage or water leakage due to excessive force. Furthermore, the '11G' is prone to cracking or leaking from the weld due to metal fatigue in the long run. In addition, in order to reduce the stress concentration effect, the shape of the water storage tank no can usually be designed only in the shape of a barrel. Additionally, in the prior art, the electric heating tube 140 is used to directly heat the fluid flowing into the water storage tank 110 from the water inlet 12 . Therefore, the storage type electric water heater 1 can usually only be used to heat the non-flammable fluid to avoid accidents when the fluid is ignited while being heated. Further, after the fluid is heated, the impurities are likely to adhere to the wall of the electric heating tube 14〇. Therefore, the water storage type electric water heater 100 is less suitable for heating food grade fluids. Moreover, after a period of use, the heating efficiency of the electric heating tube 140 to the fluid is also easily reduced by the accumulation of more impurities on the wall of the electric heating tube 14 , thereby shortening the service life of the electric heating tube 14 . [New content] In order to solve the above problems, the present invention provides a heat exchanger which can reduce the manufacturing cost and material cost of the water storage tank of the water storage type electric water heater. In order to solve the above problems, the present invention further provides a water storage type electric water heater whose water storage tank is less prone to cracking or water leakage due to the small pressure applied. The present invention provides a heat exchanger suitable for a water storage type electric water heater, comprising an inner pipe, a heat exchange pipe, a driving device and an outer pipe. ). The inner tube has an open end' - a closed end and a side wall. The heat exchange tube is winded around the side wall for transferring a first working fluid and has an inlet end and an outlet end disposed outside the inner tube. Drive configuration M419070 is connected to the heat exchange tube in the inner tube and has a drain. The outer tube has a first knowing body and a young one end, wherein the open end is inserted into the outer tube by the younger end to accommodate part of the side wall and part of the heat exchange tube in the outer tube, and the discharge port is inserted into the second end in. The first working fluid is adapted to drive a second working fluid flow through the driving device, so that the second working fluid flows through the first end and the open end sequentially into the inner tube, and flows through the discharge port after passing through the driving device. Outside the outer tube. In an embodiment of the present invention, the driving device further includes a first paddle wheel, a second impeller, and a shaft. The first working fluid flows through the first impeller and the second working fluid flows through the second impeller. The rotating shaft connects the axial center of the first impeller with the axial center of the second impeller. In an embodiment of the present invention, the driving device further includes a nozzle (n〇zzle). The heat exchange tube is coupled to the drive through the nozzle and the first working fluid flows through the nozzle to the first impeller. In an embodiment of the present invention, the first impeller has a plurality of first blades surrounding the axis of the first impeller. Each of the first blades has a first angle between a control line passing through a side of the corresponding first blade adjacent to the axis of the impeller, and the first angles are greater than or equal to 15 degrees and less than or equal to 45 degrees. . In an embodiment of the present invention, the second impeller has a plurality of second blades surrounding the axis of the second impeller. Each second blade has a second angle with a diameter line passing through a side of the corresponding second blade adjacent to the second impeller axis, and the second inflammation angle is greater than or equal to 20 degrees and less than or equal to 50 degrees. In an embodiment of the present invention, one end of the rotating shaft is fixed to the axis of the second impeller and the first impeller is sleeved on the rotating shaft and adapted to rotate with the rotating shaft. In an embodiment of the present invention, the rotating shaft is made of stainless steel or Tauman. In an embodiment of the present invention, the inlet end is pierced from the inner tube by the closed end. In an embodiment of the present invention, the outlet end described above passes through the inner tube from the closed end. In an embodiment of the present invention, the heat exchange tube is wound around the inner surface of the inner tube portion, passes through the inner tube from the open end, and is wound around at least a portion of the outer surface of the inner tube. In an embodiment of the present invention, the first end has a larger aperture than the second end. The present invention further provides a water storage type electric water heater for heating a first working fluid, which comprises a water storage tank, a heat exchanger and a second working fluid. The heat exchanger is disposed in the water storage tank and includes an inner tube, a heat exchange tube, a driving device and an outer tube. The inner 笞/, has a open end, a closed end and a side wall. The heat exchange tube is wound around the side wall for transferring the first working fluid and has an inlet end and an outlet end connected to the outside of the water storage tank. The driving device is disposed in the inner tube, connected to the heat exchange tube, and has a discharge port. The outer portion has a first end and a first end, wherein the open end is sleeved into the outer tube by the first end to accommodate a portion of the side wall and a portion of the heat exchange tube in the outer tube, and the discharge port is placed in the second tube Edited. The second working fluid is stored in the water storage tank. The first working fluid is adapted to drive the second working fluid flow through the driving device, so that the second working fluid flows through the first end and the open end sequentially into the inner tube, and flows through the discharge port after passing through the driving device Outside the outer tube. In an embodiment of the present invention, the driving device further includes a first impeller, a second impeller, and a rotating shaft. The first working fluid flows through the first impeller and the second working fluid passes through the second impeller. The rotating shaft connects the axis of the first impeller with the axis of the second impeller. In an embodiment of the present invention, the driving device further includes a nozzle and a heat exchange tube connected to the driving device through the nozzle, and the first working fluid flows to the first impeller via the nozzle. In an embodiment of the present invention, the first impeller has a plurality of first vanes surrounding an axis of the first impeller. Each of the first blades has a first angle with a radial line passing through a side of the corresponding first blade adjacent to the first impeller axis, and the first angles are greater than or equal to 15 degrees and less than or equal to 45 degree. In an embodiment of the present invention, the second impeller has a plurality of second blades surrounding the axis of the second impeller, and each of the second blades is adjacent to the second by a corresponding second blade. There is a second angle ' between the radial lines on one side of the heart and these second angles are greater than or equal to 2 degrees and less than or equal to 50 degrees. 8 M419070 In an embodiment of the present invention, one end of the rotating shaft is fixed to the axis of the second impeller, and the first impeller is sleeved on the rotating shaft and adapted to rotate with the rotating shaft. In an embodiment of the present invention, the rotating shaft is made of stainless steel or ceramic. In an embodiment of the present invention, the inlet end is threaded out of the inner tube by the closed end. In an embodiment of the present invention, the outlet end passes through the inner tube from the closed end. In an embodiment of the present invention, the heat exchange tube is wound around the inner surface of the inner tube portion and is passed through the open end. The tube is wrapped around at least a portion of the outer surface of the inner tube. In an embodiment of the present invention, the heat exchanger is disposed erectly in the water storage tank with the open end facing a bottom of the water storage tank and the closed end facing a top of the water storage tank. In the consistent application of the present invention, the above-mentioned water storage tank includes an outer barrel (barrelbarrei), an inner barrel and an insulating layer. The heat exchanger and the first working fluid are disposed in the inner tub. The insulation layer is disposed between the inner barrel and the outer barrel, and the inlet end and the outlet end sequentially pass through the inner barrel, the heat insulation layer and the outer barrel to communicate with the outside of the water storage tank. In an embodiment of the present creation, the water storage tank is an open water storage tank. In an embodiment of the present invention, the material of the inner tub is plastic. In an embodiment of the present invention, the material of the heat insulating layer comprises polyurethane (PU). In an embodiment of the present invention, the shape of the water storage tank is substantially rectangular columnar. In an embodiment of the present invention, the above-mentioned water storage type electric water heater further includes a heating device, which is disposed upright in the water storage tank for heating the second working fluid. In an embodiment of the present invention, The above heating device is an electric heating tube or a heat pump. In an embodiment of the present invention, the above-mentioned water storage type electric water heater further includes a digital microcomputer controller (digital microcomPutercontr〇Uer) configured to be in a water storage tank for displaying the temperature of the second working fluid 'according to Ambienttemperature Turns the heating unit on or off. In an embodiment of the present invention, the first end has a larger aperture than the second end. In the present creation, the storage type electric water heater can use an open type water storage tank so that the pressure of the water storage tank does not gradually increase as the temperature of the water stored in the water storage tank rises. Therefore, the water storage tank is not only less susceptible to rupture or water leakage due to excessive pressure, but its shape is not limited to a drum shape. Furthermore, the water storage tank not only does not need to be equipped with a pressure relief valve, but also can be made of a thin metal plate or a plastic material to reduce the manufacturing cost and material cost. In addition, the water storage type electric water heater of the present invention is The working fluid indirectly heats the first working fluid in the heat exchanger. Therefore, the first working fluid can be not only a non-flammable fluid but also a flammable fluid. In addition to this, the second working fluid stored in the water storage tank is substantially not lost. Therefore, the water storage type electric water heater does not need to be replenished with a new second working fluid. Therefore, in the long-term, the mass of the mass of the post-production will not continue to accumulate. In this way, the water storage type electric power supply can be used not only to heat food-grade fluids, but also to heat the efficiency of the water supply. The above-described features and advantages of the present invention are more apparent and understood in conjunction with the accompanying drawings. [Embodiment] Fig. 3 shows the structure of a water storage type electric water heater according to an embodiment. The water storage type electric water heater can be used to heat a first working fluid (not shown in Fig. 2 and the water storage type Wei (9). *~ The narrative gambling green®. Please refer to ® 2 and Figure 3 3 M419070 - in the direction of the arrow 202a'2〇2b only), and it may include a water storage tank 21〇, heat exchanger 220, a second working fluid 230 and a heating device 240. The first working fluid is, for example, tap water, and the second working fluid 23 is, for example, water stored in the water storage tank 210 for use as a heat medium. Furthermore, the water storage tank 210 may be an open type water storage tank having an outer shape and a substantially rectangular column shape, and may include an outer tub 212, an inner tub 214 and a heat insulating layer 216. In the book, the outer tub 212 can be made of a thin metal plate, and the inner tub 214 can be made of a plastic material. In addition, the thermal insulation layer 216 is disposed between the outer tub 212 and the inner tub 214 for maintaining the temperature of the second working fluid 230 stored in the water storage tank 210, and it may be polyurethane (or Made of resin). In addition, the heat exchanger 220 and the heating device 240 may be disposed upright in the water storage tank 21 , wherein the heating device 240 may be an electric heating tube, a heat pump, and combinations thereof, and may be used to store the second in the water storage tank 210 The working fluid 230 is heated to a predetermined temperature. The second working fluid 230 can then be re-transmitted through the heat exchanger 220 with the first working fluid; heat exchanged to indirectly heat the first working fluid. More specifically, the heat exchanger 220 includes an inner tube 222, a heat exchange tube 224, a drive unit 226, and an outer tube 228. The inner tube 222 has an open end 222a, a closed end 222b and a side wall 2222. The open end 222a faces a bottom portion 21a of the water storage tank 210, and the closed end 222b faces a top portion 21b of the water storage tank 210. Further, the heat exchange tube 224 is wound around the side wall 2222, which can be used to transfer the first working fluid, and has an inlet end 224a and an outlet end 224b that communicate with the outside of the water storage tank 210. In addition, the driving device 226 is disposed in the inner tube 222 and is connected to the heat exchange tube 224 so that the first working fluid can drive the second working fluid 23 to flow through the driving device 226. In addition, the outer tube 228 has a first end 228a and a second end 228b, wherein the first end 228a faces the top 210b of the water storage tank 210, and the second end 228b faces the bottom 210a' of the water storage tank 21〇 and the second end 228b The aperture is smaller than the aperture of the first end 228a. Further, the opening 222a is inserted into the outer officer '228 by the first end 228a to accommodate the portion of the side wall 2222 disk portion 11 M419070 in the outer tube 228 by the heat exchange tube 224 which is wound around the side wall 2222, and is driven. A discharge port 2268 of the device 226 is nested into the second end 228b. In this embodiment, the heat exchange tube 224 sequentially penetrates the outer tub 212, the heat insulating layer 216 and the inner tube 214, penetrates the inner tube 222 from the closed end 222b, and is wound around the inner surface of the side wall portion 2222. Thereafter, the heat exchange tube 224 is again passed out of the inner tube 222 by the open end 222a and wound around the outer surface of the portion of the side wall 2222. The 'heat exchange tube 224 is then passed through the closed end 222b into the inner tube 222' and connected to the left half of the drive unit 226. Then, the heat exchange tube 224 is connected outwardly from the left half of the driving device 226, and sequentially passes through the closed end 222b, the inner tub 214, the heat insulating layer 216 and the outer tub 212 to communicate with the outside of the water storage tank 210. In addition, the driving device 226 in this embodiment includes a first impeller 2262, a second impeller 2264, a shaft for connecting the axis of the first impeller 2262 and the axis of the second impeller 2264, and the above-mentioned shaft. A discharge port 2268 and a nozzle 2269. The first impeller 2262 and the second impeller 2264 can be made of plastic material, and the rotating shaft 2266 can be made of stainless steel material, ceramic material or other wear-resistant material with a smaller expansion coefficient than stainless steel or ceramic, so that it can be better. Strength of. As shown in Fig. 3, the first impeller 2262 is disposed in the left half of the driving device 226, and the heat exchange tube 224 is coupled to the left half of the driving device 226 through the nozzle 2269. Further, the second impeller 2264 is disposed in the right half of the driving device 226, and the discharge port 2268 is outwardly connected by the right half of the driving device 226. In addition, the end E of the rotating shaft 2266 is set; the wheel 2264 is set to the rotating shaft 2266 as shown in FIG. 4A, and the left side view of the first impeller in FIG. 3 is not shown in FIG. 4B, and FIG. 4B is shown in FIG. The right side view of the second impeller. Referring to Fig. 3, Fig. 4A and Fig. 4B, the first impeller 2262 has a plurality of loop-mesh first-wires m, and the second impeller has a plurality of second blades B2 around its axis. The first fan _B1 has a first angle between a radial line passing through the first side si and a second corner angle 02 between the second blade B2 and the warp passing through the second side S2 thereof. In this embodiment, the first angle Θ1 is preferably greater than or equal to 15 degrees and less than or equal to 45 degrees, and the second group is preferably, for example, greater than the scale of 2G degrees and less than the scale of 5 ( )degree. At this time, the efficiency of the first working fluid 12 M419070 to drive the second working fluid 230 through the driving device 226 is better. Based on the above, the first working fluid flowing into the heat exchange tubes 224 from the inlet end 224a can flow along the heat exchange tubes 224 and flow through the nozzles 2269 to the left half of the drive unit 226. Thereafter, the first working fluid will again flow out of the heat exchange tubes 224 via the outlet end 224b. Moreover, when the first working fluid flows through the left half of the driving device 226, the first impeller 2262 is driven to rotate, and the second impeller 2264 is rotated by the rotating shaft 2266. At this time, the second impeller 2264 will drive the second working fluid 230 in the inner tube 222 into the right half of the driving device 226 and flow to the bottom 210a of the water storage tank 210 via the discharge port 2268. At the same time, the second working fluid 23〇 stored in the water storage tank 210 also flows through the first end 22, for example, the outer tube: the gap between the inner and outer tubes 222 and the open end 222a into the inner tube 222. It should be noted that the second working fluid 23〇 stored in the water storage tank 21〇 is first heated by the heating device 240 to a preset temperature, and the first working fluid flowing in the heat exchange tube 224 is in heat exchange with the flow. The second working fluid 23 () outside the tube 224 performs heat exchange. Therefore, the temperature of the first working fluid flowing out of the heat exchange tubes 224 from the outlet end 224b may be higher than the temperature at which the inlet end 224a flows into the first working fluid in the heat exchange tubes 224. That is, the heating device 240 can indirectly heat the first working fluid through the heat exchange tube 224 and the second working fluid 230. In addition, as shown in FIG. 3, the nozzle nozzle 9 is connected to the heat exchange tube so that the aperture should be larger than the aperture connected to the left half of the driving device 226, so that the first working fluid after passing through the nozzle 2269 will have a higher Work pressure. Compared to the closed water storage tank used in the prior art, the water storage tank 21〇 (open storage water = need not be filled with the second working fluid 23〇 (water). Therefore, the water storage tank 21〇 only needs to bear the second The weight of the working fluid 23〇, without f, is subjected to the pressure generated by the second expansion fluid 23q being thermally expanded. Therefore, the pressure of the water storage tank 21G is small, and the valley is less susceptible to excessive pressure. The rupture or water leakage. In this way, not only the water storage tank 21 〇 ^ shape can be used in the drum shape and the inner barrel 214 can also be made of a thin metal plate or plastic material to reduce the manufacturing cost and material of the water tank 21 〇. In addition, the heating device 240 can pass through the heat exchange tube 224 and the second working fluid 23〇13 M419070. Therefore, the first working fluid can be not only a non-flammable flow fluid but also a second working fluid 230. In order to indirectly heat the heat transfer medium, it will not be lost substantially, and it may not need to be replenished. Because of 2, the amount of miscellaneous f of the second working fluid 23 of the water storage tank 2U) is not more and more. Also, the storage type electric water heater 2 (8) can be used not only to heat the food grade fluid, but also to change the material exchange efficiency and service life. In addition, the controller can control the rotational speed of the second impeller by the flow of the body and the flow rate of the second impeller, thereby adjusting the temperature at which the first working fluid flows out of the heat exchange tube 224 from the outlet end 224b.
另外’在其他未繪示的實施例中，儲水式電熱水器亦可以冷卻裳 置來取代加熱裝置。此時，由出口端流出熱交換f外的第—工作流^ 3度會低於由進口端流麵交換管中的第—工作流體的溫度。也就 兒儲水式電熱水器不僅可透過熱交換管與第二工作流體間接加熱 第一工作频，亦可透過熱交換管與第二工作流_接冷卻第-工作 流體。In addition, in other embodiments not shown, the water storage type electric water heater can also cool the skirt instead of the heating device. At this time, the first working flow outside the heat exchange f from the outlet end may be lower than the temperature of the first working fluid in the inlet pipe of the inlet end. In other words, the water storage type electric water heater can not only indirectly heat the first working frequency through the heat exchange tube and the second working fluid, but also cool the first working fluid through the heat exchange tube and the second working stream.
再者，上述實施例並非用以限定熱交換管224的纏繞方式。舉例 ，三在其他未繪示的實施财’依序貫穿外桶、保溫層與内桶的熱 父換管亦可先纏繞於側壁部分的外表面，並由開放端穿入内管中，然 後再纏繞於側壁部分的内表面後連接至驅動裝置。然後，熱交換管再 由驅動裝置向外連接’並依序貫穿賴端、賴 '保溫層與外桶後連 通至儲水槽外。或者，只要能使流動於熱交換管中的第一工作流體可 與流動於熱交換管外的第二工作流體有效地進行熱交換，熱交換管亦 可以其他方式纏繞於側壁上。 除此之外，如圖2所示，儲水式電熱水器200更可包括一配置於 儲水槽210的數位式微電腦控制器25〇。數位式微電腦控制器25〇可用 以顯示第二工作流體230的溫度，並可根據儲水槽21〇外的一環境溫 度來啟動或關閉加熱裝置240。 综合上述，本創作的儲水式電熱水器可具有至少下列幾項優點： 14 M419070 .錯水槽所承受_力不會隨著儲存於儲水槽中的水的溫度上 升而逐漸增加，故較不容易因承受過大賴力而破裂或漏水。 2.儲水槽的外型可不侷限於圓桶狀。 娜奸=碰可巧要輯料顧，柯使崎_金屬板或 J才質來製作，鱗低其製作成本及材料成本。 體。4.第-卫作流體不僅可以是不可燃性流體，亦可叹易燃性流 5·儲水槽中的雜質量不會越來越多。Moreover, the above embodiment is not intended to limit the manner in which the heat exchange tubes 224 are wound. For example, in the other unillustrated implementations, the hot-female change of the outer barrel, the insulation layer and the inner barrel may be first wound on the outer surface of the side wall portion, and the open end penetrates into the inner tube and then entangles. Connected to the drive unit after the inner surface of the side wall portion. Then, the heat exchange tube is further connected to the outside by the driving device, and sequentially passes through the Lai end, and the insulation layer and the outer tub are connected to the outside of the water storage tank. Alternatively, as long as the first working fluid flowing in the heat exchange tubes can be efficiently exchanged with the second working fluid flowing outside the heat exchange tubes, the heat exchange tubes can be wound on the side walls in other manners. In addition, as shown in FIG. 2, the water storage type electric water heater 200 further includes a digital microcomputer controller 25A disposed in the water storage tank 210. The digital microcomputer controller 25 can be used to display the temperature of the second working fluid 230 and can activate or deactivate the heating device 240 based on an ambient temperature outside the reservoir 21 . In summary, the water storage type electric water heater of the present invention can have at least the following advantages: 14 M419070. The force of the wrong water tank does not increase gradually as the temperature of the water stored in the water storage tank increases, so it is not easy. Broken or leaking due to excessive exertion. 2. The shape of the water storage tank is not limited to a round barrel shape. Naojiao = touch can be skillfully prepared, Ke Keqi _ metal plate or J quality to make, scale low production costs and material costs. body. 4. The first-guard fluid can not only be a non-flammable fluid, but also smear the flammable flow. 5. The amount of impurities in the water storage tank will not increase.
6.儲水式電熱水器可用以加熱食品級的流體。 儲水式電熱水器可具有較佳的熱交換效率。 &儲水式電熱水器可具有較長的使用壽命。 9.可藉由控制第—工作流體的流量來調整第—卫作 糕流出熱交換管外時的溫度。6. Storage water heaters can be used to heat food grade fluids. The storage type electric water heater can have better heat exchange efficiency. & storage water heaters can have a long service life. 9. The temperature at which the first serving cake flows out of the heat exchange tube can be adjusted by controlling the flow rate of the first working fluid.
—10.儲水式電熱水器可配置有數位式微電腦控制器，其 =作流細度，並可刪水_魏溫嫩動或關閉= 雖穌鑛已以實施例麻如上，織並義魏林 =所^技術賴t具有通常知識者，在不麟糊作_神和 直當可作些許的更軸潤飾，因此本辦的紐範圍 h專利範顯界定者為準。 晴的申 15 M419070 【圖式簡單說明】 圖1繪示出習知技藝中的一種儲水式電熱水器的結構示意圖。 圖2繪示出本創作一實施例的一種儲水式電熱水器的結構示意圖。 圖3繪示出圖2中的熱交換器的結構示意圖。 圖4A繪示出圖3中的第一葉輪的左側視圖。 圖4B繪示出圖3中的第二葉輪的右側視圖。 • 【主要元件符號說明】 100 :儲水式電熱水器 110 :儲水槽 120 ;進水口 130 ;出水口 140 :電加熱管 200 :儲水式電熱水器 • 202a :箭頭 202b :箭頭 210 :儲水槽 210a :底部 210b :頂部 212 :外桶 214:内桶 16 M419070—10. The storage type electric water heater can be equipped with a digital microcomputer controller, which has a fineness of flow and can be deleted _Wei Wennen or closed = although the mine has been implemented as an example of the above, weaving and Yi Wei Lin = ^ ^ technology depends on the general knowledge of the people, in the ignorance of _ God and straight can be made a little more retouching, so the scope of the new scope of the patent h patent definition is subject to. Qing Shen 15 M419070 [Simple Description of the Drawings] FIG. 1 is a schematic view showing the structure of a water storage type electric water heater in the prior art. 2 is a schematic structural view of a water storage type electric water heater according to an embodiment of the present invention. FIG. 3 is a schematic view showing the structure of the heat exchanger of FIG. 2. 4A depicts a left side view of the first impeller of FIG. 3. 4B depicts a right side view of the second impeller of FIG. 3. • [Main component symbol description] 100: Water storage type electric water heater 110: water storage tank 120; water inlet 130; water outlet 140: electric heating pipe 200: water storage type electric water heater • 202a: arrow 202b: arrow 210: water storage tank 210a : bottom 210b: top 212: outer barrel 214: inner barrel 16 M419070
216 :保溫層 220 :熱交換器 222 :内管 222a :開放端 222b :封閉端 2222 :側壁 224 :熱交換管 224a ··進口端 224b :出口端 226 :驅動裝置 2262 :第一葉輪 2264 :第二葉輪 2266 :轉軸 2268 :排放口216: insulation layer 220: heat exchanger 222: inner tube 222a: open end 222b: closed end 2222: side wall 224: heat exchange tube 224a · · inlet end 224b: outlet end 226: drive device 2262: first impeller 2264: Two impeller 2266: shaft 2268: discharge port
2269 :喷嘴 228 :外管 228a :第一端 228b :第二端 230 :第二工作流體 240 :加熱裝置 250 :數位式微電腦控制器 B1 :第一扇葉 17 M419070 B2 :第二扇葉 R1 :徑線 R2 :徑線 51 :第一側 52 :第二側 01 :第一夹角 :第二夹角2269: Nozzle 228: Outer tube 228a: First end 228b: Second end 230: Second working fluid 240: Heating device 250: Digital microcomputer controller B1: First blade 17 M419070 B2: Second blade R1: Diameter R2: Diameter 51: First side 52: Second side 01: First angle: Second angle