TWI278352B - Coaxial dual-array micro mixing device - Google Patents

Coaxial dual-array micro mixing device Download PDF

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Publication number
TWI278352B
TWI278352B TW94130233A TW94130233A TWI278352B TW I278352 B TWI278352 B TW I278352B TW 94130233 A TW94130233 A TW 94130233A TW 94130233 A TW94130233 A TW 94130233A TW I278352 B TWI278352 B TW I278352B
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Taiwan
Prior art keywords
inner flow
mixing
flow channel
mixed
array
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TW94130233A
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Chinese (zh)
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TW200711742A (en
Inventor
Jiue-Kuan Wang
Zong-Sing Lyu
Kuen-He Yang
Chun-Hsien Chiu
Yang-Sheng Huang
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Univ Nat Cheng Kung
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Priority to TW94130233A priority Critical patent/TWI278352B/en
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Publication of TWI278352B publication Critical patent/TWI278352B/en

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Abstract

This invention provides a coaxial dual-array micro mixing device. The micro mixing device includes at least one first inner flow passageway and one second inner flow passageway; wherein the first passageway and the second passageway are connected to material storage containers respectively. The first inner flow passageway is arranged inside the second inner passageway to be coaxial with respect to each other. The second inner flow passageway is provided in a lower portion thereof with two rows of mixing structures arranged in arrays, among which a plurality of flow passageways that effect repeated circulation are formed. By means of this arrangement, when a fluid in the first inner flow passageway is infused into the second inner flow passageway and is mixed with a fluid in the second inner flow passageway, the mixed fluid flows through the mixing structures carry out continuous circulation and is then discharged through an end of the second inner flow passageway. By this way, the overall mixing effect is increased.

Description

1278352 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種同軸型雙陣列微混合器,尤指一種 透過特殊形狀流道設計使不同流體產生充份混合效果之 微混合器’俾具有提升混合效果之優點及功效者。 【先前技術】 按’所謂「霧化」主要係指一門研究如何將液體、熔 融材料、或固、液、氣多相混合之流體等介質碎化成細小 • 液滴或超微粒粉末之科學,其不僅為内燃機、燃氣渦輪 機、锅爐及各種工業燃燒器内燃油喷射、混合形成及燃燒 的一項關鍵技術,目前在喷霧塗裝、電子喷霧冷卻、喷霧 乾燥、陶莞顆粒製造、粉末冶金、空調加濕、農藥喷灑、 * 裝卸降塵、消防、醫藥衛生及科技美容等許多領域中也有 、 著十分廣泛的應用。 而目前常見之霧化器依其霧化動力來源係概可分為 下列三種: • 1.壓力式霧化裝置:利用液體經過喷嘴後之壓差轉變 成高速動肥’務化於周圍靜止或較低速氣體中。 2·雙流體霧化裝置··令待霧化之液體通過微流道並與 高速氣流產生交互作用,以達到霧化目的。 3 ·旋轉式務化裝置·藉著機哭+ # 考械之疑轉離心力而將液體 • 霧化。 惟,不_係上述何種霧化裝置,复曰 體 霧 X' 1ΤΓ L m /、敢終目的^在使 霧化成極細狀«顆粒’因此, 顆粒平均粒徑以提升霧化品質 ::減務化後之; 、 匕成為霧化技術極為j 1278352 .要之課題。 就上述習知霧化裝置而言,其待霧化液體係先通過一 道極細微之微管道後再與高速氣流產生交互作用,並藉液 體與氣體之交互作用而使液體霧化成細微喷霧;然而,上 < 述交互作用所產生之霧化效果實際上在蝕刻成型之微通 , 道上並不顯著。緣,經吾等發明人研究發現,由於蝕刻成 型之微通道之通道摩擦力過大、雷諾數過低,進而導致不 同流體各自分流而無法充份混合,如此一來,即使經過後 參 續與高速氣流產生交互作用之步驟,所產生之噴霧亦皆為 各自不同成分之喷霧粒子而非混合狀態喷霧粒子。 有鑑於此,為有效解決上述流體混合不均勻之問題, 吾等發明人特地針對習知霧化裝置進行改良並有本發明 ^ 之微混合器問世。 ^ 【發明内容】 緣是,本發明之目的係為提供一種同轴型雙陣列微混 合器,主要具有可提升混合效果之優點及功效者。 Φ 為達致以上目的,本發明人特別設計一種同軸型雙陣 列微混合裝置,該微混合裝置至少包含第一内流道及第二 内流道,其中,該第一内流道及第二内流道係分別外接儲 料槽,第一内流道係設置於第二内流道内部且二者係呈同 軸設置,該第二内流道内部設有兩排呈陣列狀排列之混合 " 結構,該等混合機構之間係形成有可重複循環之流體通 道;藉以上設置,當第一内流道内之流體注入第二内流道 内並與第二内流道之流體形成混合流體時,該混合流體將 循該等混合結構進行迴流式循環流動,俾使混合流體不斷 7 1278352 . 擾動及重複對流,進而達致提升整體混合效果之優點及功 效者。 【實施方式】 關於本發明之技術手段,茲舉若干較佳實施例配合圖 - 式於下文進行詳細說明,供鈞上深入了解並認同本發 、 明。 首先請參閱第一圖所示,本發明之同軸型雙陣列微混 合器至少包含第一内流道1及第二内流道2,其中: • 該第一内流道1及第二内流道2係分別外接至不同 流體儲料槽11、21,第一内流道1係設置於第二内流道2 内部且二者係採同軸設置,該第二内流道2内部設有兩排 呈陣列狀排列之混合結構22 (該等混合結構22之位置以位 ^ 於第一内流道1出口下方為宜),每排混合機構22係包含 - 若干近似機翼形狀之擾流葉片,且該等混合機構21係呈由 兩側朝中間方向下傾狀態;又,兩排混合機構22係呈左右 對稱方式設置,且混合機構22與混合機構22之間係形成有 φ 相互連通且可重複循環之流體通道,而第二内流道2底部 出口係設有一微喷嘴23,該微喷嘴23係可連接至收集容器 3 ° 關於本發明之操作方式主要係如第二圖所示,當第一 内流道1内之第一種流體被施壓注入第二内流道2内並 4 與第二内流道2内之第二種流體形成高速混合流體以 / 後,該高速混合流體將在第二内流道2中循著該等混合結 構22近似機翼形狀之外壁進行多重迴流式循環流動,俾使 混合流體不斷擾動及重複對流,並在第二内流道2之末端 8 1278352 • 形成混合更為均勻之混合流體分子,最後自第二内流道2 之微噴嘴24喷入容器3中收集,然後自容器3之出口排 出;藉以上設置,進而更達致提升不同流體之混合效果者。 再者,本發明之混合結構22除可採如前述之左右對稱 A 方式設置以外,當然亦可為如第三圖所示之左右交錯方式 • e又置’且同樣可以產生極優良之微混合效果。 接下來請參閱第四及五圖所示,本創作之第三及第四 實施例主要係在第二内流道2中增設若干擾流微結構 • 24 ’該等擾流微結構24係介於兩對混合結構22之間,且係 呈尖錐狀體,藉以令高速混合流體產生強烈分流作用,進 而使混合流體更容易在第二内流道2中產生迴流與對 流’俾提升微混合效果。 關於本創作之第五及第六實施例則請參閱第六及七 • 圖所示,其主要係在第二内流道2之内管壁增設若干管壁 微結構25,該等管壁微結構25之位置適介於同側上、下混 a、、、口構22之間,利用管壁微結構25之設置,俾可引導靠近 •第二内流道2管壁之混合流體朝第二内流道2中間流 動同樣具有提升微混合效果之作用。 ^此外,前文所述者雖皆舉二種不同流體進行混合為實 =例,惟,本發明之適用範壽旅非僅侷限於一種流體之混 《已,換言之,若係二種以上之流體進行混合者,當然 r 採用本發明之模式為之(請參閱第八圖所示),且亦 π達致極佳混合效果,特予敘明。 經由以上說明可知本發明之優點在於: 1弟〜内流道2内部設置陣列狀排列之此合結構 1278352 . 22,使不同成分之高速流體在第二内流道2中形成強烈對 流及循環,並使不同流體充份混合。 2、減少第二内流道2管壁對混合流體產生之阻力, 避免混合流體因為阻力導致流速不一,並產生混合不均勻 κ 之現象。 . 綜上所述,本發明所揭露之技術手段確可達致預期之 目的與功效且具長遠進步性,誠屬可供產業上利用之發明 無誤,爰依法提出申請,懇祈鈞上惠予詳審並賜准發明 # 專利,至感德馨。 惟以上所述者,僅為本發明之較佳實施例,當不能以 此限定本發明實施之範圍,即大凡依本發明申請專利範圍 及發明說明書内容所作之等效變化與修飾,皆應仍屬本發 * 明專利涵蓋之範圍内。 【圖式簡單說明】 第一圖係本發明第一實施例之配置示意圖。 φ 第二圖係本發明第一實施例之流體流動狀態示意圖。 第三圖係本發明第二實施例之配置示意圖。 第四圖係本發明第三實施例之配置示意圖。 第五圖係本發明第四實施例之配置示意圖。 第六圖係本發明第五實施例之配置示意圖。 ' 第七圖係本發明第六實施例之配置示意圖。 / 第八圖係本發明第七實施例之配置示意圖。 【主要元件符號說明】 1278352 1 - -第一内流道 11 — 2- -第二内流道 21 — 22— _混合結構 23— 24— _擾流微結構 25— 3- -容器 儲料槽 儲料槽 喷嘴 管壁微結構1278352 IX. Description of the Invention: [Technical Field] The present invention relates to a coaxial double-array micromixer, and more particularly to a micromixer that has a special shape flow path design to produce a sufficient mixing effect of different fluids. Improve the advantages and effects of the mixing effect. [Prior Art] According to 'so-called "atomization", it is mainly a science that studies how to disperse liquids, molten materials, or fluids such as fluids mixed with solid, liquid, and gas into small droplets or ultrafine particles. Not only a key technology for fuel injection, mixing formation and combustion in internal combustion engines, gas turbines, boilers and various industrial burners, but also in spray coating, electronic spray cooling, spray drying, ceramics production, Powder metallurgy, air conditioning humidification, pesticide spraying, * loading and unloading dust, fire, medical and health and technology beauty and many other fields are also widely used. At present, the common atomizers can be classified into the following three types according to their atomization power source: • 1. Pressure atomization device: the pressure difference after the liquid passes through the nozzle is converted into a high-speed dynamic fertilizer. In lower speed gas. 2. Two-fluid atomization device · The liquid to be atomized passes through the micro-flow channel and interacts with the high-speed air flow to achieve the atomization purpose. 3 · Rotary service device · By machine crying # # 考 之 转 转 转 离心 离心 离心 离心 离心 离心 液体 液体 液体 液体 液体 液体 液体 液体 液体 液体 液体However, it is not the above-mentioned atomizing device, the retort body fog X' 1ΤΓ L m /, the ultimate goal ^ is atomized into a very fine «particle", therefore, the average particle size of the particles to improve the atomization quality:: minus After the chemicalization; 匕 became the atomization technology is extremely j 1278352. In the above-mentioned conventional atomizing device, the liquid to be atomized system first passes through a very fine micro-pipe and then interacts with the high-speed airflow, and the liquid is atomized into a fine spray by the interaction of the liquid and the gas; However, the atomization effect produced by the above-mentioned interaction is actually in the micro-pass of the etching, which is not significant. Yuan, by our inventors' research, it is found that the channel friction of the microchannels in the etching process is too large, and the Reynolds number is too low, which causes the different fluids to be shunted separately and cannot be fully mixed, so that even after the continuation and high speed The airflow creates an interactive step, and the resulting sprays are also spray particles of different compositions rather than mixed state spray particles. In view of the above, in order to effectively solve the problem of uneven mixing of the above fluids, the inventors have specifically improved the conventional atomizing device and have the micromixer of the present invention. SUMMARY OF THE INVENTION [Invention] It is an object of the present invention to provide a coaxial type double array micro-mixer, which mainly has the advantages and effects of improving the mixing effect. Φ In order to achieve the above object, the inventors have specifically designed a coaxial dual array micro-mixing device, the micro-mixing device comprising at least a first inner flow channel and a second inner flow channel, wherein the first inner flow channel and the second inner flow channel The inner flow passages are respectively connected to the storage chutes, the first inner flow passages are disposed inside the second inner flow passages and the two are coaxially disposed, and the second inner flow passages are internally provided with two rows of arrays arranged in a mixture. Structure, the mixing mechanism is formed with a recirculating fluid passage; by the above arrangement, when the fluid in the first inner flow passage is injected into the second inner flow passage and forms a mixed fluid with the fluid of the second inner flow passage; The mixed fluid will perform a recirculating circulation flow according to the mixed structures, so that the mixed fluid continuously 7 1278352. Disturbance and repeated convection, thereby achieving the advantages and functions of improving the overall mixing effect. [Embodiment] The present invention will be described in detail with reference to the accompanying drawings, in which: FIG. Referring first to the first figure, the coaxial dual array micromixer of the present invention comprises at least a first inner flow channel 1 and a second inner flow channel 2, wherein: • the first inner flow channel 1 and the second inner flow The channel 2 is externally connected to the different fluid storage tanks 11, 21, and the first inner flow channel 1 is disposed inside the second inner flow channel 2, and the two are coaxially disposed, and the second inner flow channel 2 is internally provided with two The hybrid structure 22 arranged in an array (the positions of the hybrid structures 22 are preferably located below the outlet of the first inner flow path 1), and each row of mixing mechanisms 22 includes - a plurality of spoiler blades having an approximate wing shape And the mixing mechanism 21 is inclined downward from the both sides in the middle direction; further, the two rows of mixing mechanisms 22 are arranged in a bilaterally symmetric manner, and the mixing mechanism 22 and the mixing mechanism 22 are formed with φ communicating with each other. The circulation channel of the second inner flow channel 2 is provided with a micro nozzle 23 which can be connected to the collection container 3 °. The operation mode of the present invention is mainly as shown in the second figure. When the first fluid in the first inner flow channel 1 is pressurized and injected into the second The second fluid in the flow channel 2 and the second inner flow channel 2 forms a high velocity mixed fluid after/after the high velocity mixed fluid will follow the hybrid structure 22 in the second inner flow channel 2 Multiple recirculating circulation flows on the outer wall of the shape, causing the mixed fluid to constantly perturb and repeat convection, and at the end of the second inner flow channel 2 8 1278352 • to form a more uniform mixed fluid molecule, and finally from the second inner flow path The micro-nozzle 24 of 2 is sprayed into the container 3 for collection, and then discharged from the outlet of the container 3; by the above arrangement, the effect of improving the mixing effect of different fluids is further achieved. Furthermore, the hybrid structure 22 of the present invention may be arranged in the left-right symmetrical A mode as described above, and may of course be a left-right staggered manner as shown in the third figure. effect. Next, please refer to the fourth and fifth figures. The third and fourth embodiments of the present invention mainly add a cross-flow micro-structure in the second inner flow channel 2 • 24 'the spoiler microstructures 24 Between the two pairs of mixing structures 22, and having a tapered shape, a high-speed mixing fluid is strongly shunted, thereby making it easier for the mixed fluid to generate reflux and convection in the second inner flow channel 2 effect. With regard to the fifth and sixth embodiments of the present invention, please refer to the sixth and seventh embodiments. The main purpose is to add a plurality of tube wall microstructures 25 in the inner wall of the second inner flow channel 2, and the tube walls are microscopically The position of the structure 25 is suitable between the upper side and the lower side mixing a, and the mouth structure 22. With the arrangement of the tube wall microstructure 25, the crucible can guide the mixed fluid close to the second inner flow path 2 The intermediate flow of the two inner flow channels 2 also has the effect of enhancing the micro-mixing effect. In addition, although the foregoing describes the mixing of two different fluids as an example, the application of the present invention is not limited to a mixture of fluids, in other words, if more than two fluids are used. For the mixer, of course, the mode of the present invention is adopted (see the eighth figure), and the π achieves an excellent mixing effect, which is specifically described. It can be seen from the above description that the advantages of the present invention are as follows: 1 The internal structure of the inner-channel 2 is arranged in an array-like arrangement of 1273852. 22, so that high-speed fluids of different compositions form strong convection and circulation in the second inner flow channel 2, Mix and mix different fluids. 2. Reducing the resistance of the second inner flow channel 2 to the mixed fluid, avoiding the mixed fluid due to the resistance, resulting in a different flow rate and a phenomenon of uneven mixing κ. In summary, the technical means disclosed in the present invention can achieve the intended purpose and effect and have long-term progress. It is true that the invention for industrial use is correct, and the application is made according to law, and the application is made in accordance with the law. Detailed examination and granting the invention # patent, to the feeling of Dexin. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the invention and the contents of the invention are still It is within the scope of this patent*. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a schematic view of the configuration of the first embodiment of the present invention. φ The second figure is a schematic diagram of the fluid flow state of the first embodiment of the present invention. The third figure is a schematic view of the configuration of the second embodiment of the present invention. The fourth figure is a schematic view of the configuration of the third embodiment of the present invention. Figure 5 is a schematic view showing the configuration of a fourth embodiment of the present invention. Figure 6 is a schematic view showing the configuration of a fifth embodiment of the present invention. The seventh drawing is a schematic view showing the configuration of the sixth embodiment of the present invention. / Figure 8 is a schematic view showing the configuration of a seventh embodiment of the present invention. [Main component symbol description] 1278352 1 - - First inner flow path 11 - 2- - Second inner flow path 21 - 22 - _ hybrid structure 23 - 24 - _ spoiler microstructure 25 - 3- - container hopper Storage tank nozzle wall microstructure

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Claims (1)

1278352 十、申請專利範圍: 1、 一種同軸型雙陣列微混合器,該混合器至少包含 第一内流道及第二内流道,其中,該第一内流道及第二内 流道係分別連接儲料槽,第一内流道係設置於第二内流道 内部且二者係呈同軸設置,該第二内流道内部設有兩排呈 陣列狀排列之混合結構,令該等混合機構之間係形成有可 重複循環之流體通道;藉以上設置,當第一内流道内之流 體〉主入第二内流道内並形成混合流體時,該混合流體將循 該等混合結構進行迴流式循環流動,俾使混合流體不斷擾 動及重複對流’進而達致提升整體混合效果之優點及功效 者。 2、 如申請專利範圍第1項所述同軸型雙陣列微混合 器’其中’兩排混合機構係可為若干近似機翼形狀之擾流 葉片’且該等混合機構係呈由兩侧朝中間方向下傾狀態設 置者。 〇 3、如申請專利範圍第1項所述同軸型雙陣列微混合 态,其中,兩排混合機構係可呈左右對稱方式設置者。 4、如申請專利範圍第1項所述同軸型雙陣列微混合 W 中’兩排混合機構係可呈左右交錯方式設置者。 ^ 5 如申凊專利範圍第1項所述同轴型雙陣列微混合 & /其中’第二内流道中係可設置若干擾流微結構,該等 =流微結構係介於兩對混合結構之間,藉以令混合流體產 生強烈分流作用者。 〇 器 、如申請專利範圍第5項所述同軸型雙陣列微混合 〃中’該等擾流微結構係可呈尖錐狀體者。 12 1278352 7、如申請專利範圍第1項所述同軸型雙陣列微混合 器,其中,第二内流道内管壁係可設置若干管壁微結構, 該等管壁微結構適介於同側上、下混合結構之間者。1278352 X. Patent Application Range: 1. A coaxial dual array micromixer, the mixer comprising at least a first inner flow channel and a second inner flow channel, wherein the first inner flow channel and the second inner flow channel system Connected to the storage tanks respectively, the first inner flow passages are disposed inside the second inner flow passages and the two are coaxially arranged, and the second inner flow passages are internally provided with two rows of mixed structures arranged in an array, so that Forming a recirculating fluid passage between the mixing mechanisms; by the above arrangement, when the fluid in the first inner flow channel is mainly introduced into the second inner flow passage and a mixed fluid is formed, the mixed fluid will follow the mixed structure Circulating circulation flow, so that the mixed fluid constantly perturbs and repeats convection, and thus achieves the advantages and functions of improving the overall mixing effect. 2. The coaxial dual array micromixer as described in claim 1 wherein the 'two-row mixing mechanism can be a plurality of spoiler blades of approximate wing shape' and the mixing mechanism is from the sides to the middle Direction down state setting. 〇 3. The coaxial type double array micro-mixed state described in claim 1 of the patent application, wherein the two-row mixing mechanism can be set in a bilaterally symmetric manner. 4. The two-row hybrid mechanism of the coaxial double-array micro-mixing W according to the first aspect of the patent application can be arranged in a left-right staggered manner. ^ 5 As described in claim 1, the coaxial dual array micro-mixing & / wherein 'the second inner flow channel can be set to interfere with the flow microstructure, the = flow micro-structure is between two pairs Between the structures, so that the mixed fluid produces a strong shunt. The turret, such as the coaxial double-array micro-mixing crucible described in claim 5, may be in the form of a tapered body. 12 1278352 7. The coaxial dual array micromixer according to claim 1, wherein the inner wall of the second inner flow channel can be provided with a plurality of tube wall microstructures, and the tube wall microstructures are suitable on the same side The upper and lower mixed structures are between. 1313
TW94130233A 2005-09-05 2005-09-05 Coaxial dual-array micro mixing device TWI278352B (en)

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