201134773 六、發明說明： . 本發明主張西元2010年2月25日所申請之美國專利 申請案號第61/308067號為優先權。 【發明所屬之技術領域】 本發明通常是關於製造玻璃物件之設備及方法，且 更特定而言之’是關於在預澄清腔室以及後澄清腔室中 攪拌熔融玻璃之設備及方法。 【先前技術】 玻璃製造系統通常用於形成各種玻璃物件，例如液 晶顯示器（LCD)玻璃片。舉例來說，已知將熔融玻璃流動 進入隔離管（isopipe)，在其中藉由熔融下拉製程來形成 玻璃條帶。隨後接著’分割該玻璃條帶用以提供液晶顯 示器（LCD)玻璃片。 【發明内容】 在一示例性具體實施例中，提供製造玻璃物件的方 法。該方法包含在玻璃熔化器中熔化批次材料之步驟， 用以產生包含二氧化錫的溶融玻璃。該方法更進一步包 含下列步驟：將熔融玻璃由玻璃熔化器傳遞至預澄清腔 室，且在預澄清腔室中攪拌熔融玻璃。該方法亦更進一 步包含下列步驟：將熔融玻璃由預澄清腔室傳遞至澄清 4 201134773 腔室’且在澄清腔室中將大多數的氣泡由熔融玻璃中移 除。該方法更包含下列步驟：將熔融玻璃由澄清腔室傳 遞至後澄清腔室，其中在後澄清腔室中的㈣玻璃溫度 是小於在預澄清腔室中的熔融玻螭溫度。該方法更近_ 步包含下列步驟：在後澄清腔室中攪拌熔融玻璃，且將 一數量的熔融玻璃由後澄清腔室傳遞至成形容器，用以 形成玻璃物件。 在其他示例性具體實施例中，提供製造玻璃物件之設 備。該設備包含：玻璃熔化器，其配置用以將批次材料 熔化為熔融玻璃；以及預澄清腔室，其配置用以接收來 自玻璃溶化器之溶融玻璃。該預澄清腔室包含第一攪拌 裝置’其用於在該預澄清腔室中授拌溶融玻璃。該設備 更近一步包含澄清腔室’其配置用以接收來自預澄清腔 室的炫融玻璃’且將大多數的氣泡由溶融玻璃中移除。 該設備亦包含後澄清腔室，其配置用以接收來自澄清腔 室的熔融玻璃。該後澄清腔室包含第二攪拌裝置，其用 於在後澄清腔室中攪拌熔融玻璃，其中配置該第二攪拌 裝置以小於第一攪拌裝置的攪拌剪力來攪拌該熔融玻 璃。該裝置亦更近一步包含成形容器，其配置用以接收 來自後澄清腔室的熔融玻璃，且形成玻璃物件》 【實施方式】 以下參考呈現示例性具體實施例的附圖，來更完整地 201134773 說明實施例。儘可能在全部的圖式中使用相同的元件符 號來代表相同或相似的構件。然而，可以許多不同的形 式來實施本發明之態樣’且不應將該等態樣解釋為限制 在此所說明之具體實施例。 第1圖為設備101的圖式說明，其配置用以製造玻璃 物件。在一實施例中，該玻璃物件可包含：玻璃藝術品、 玻璃谷器、玻璃棒、玻璃管或其他玻璃物件。設備 亦可用於製造預期實質上不具氣泡的玻璃物件。舉例來 說，玻璃物件更近一步包含光學裝置’例如光學裝置的 一或多個玻璃透鏡《在另一實施例中，該玻璃物件可包 含玻璃片’例如用於液晶顯示器之玻璃片。 更進一步地說明第1圖’設備1〇1包含玻璃熔化器 103 ’其配置用以由儲存槽107將批次材料ι〇5熔化。可 藉由批次輸送裝置109穿過玻璃熔化器1〇3的入口沿著 方向箭頭111將批次材料引入。在玻璃熔化器1〇3的内 部，將批次材料105熔化成為熔融玻璃丨丨3。根據所期 望的玻璃物件特性以及製程條件，該溶融玻璃H3可具 有各種組成。舉例來說，溶融玻璃113可包含揮發性成 分’其幫助將氣泡由熔融玻璃中澄清出來，用以製造實 質上不具有氣泡的玻璃物件。如圖式中所說明，溶融玻 璃113包含揮發性成分，例如二氧化錫（Sn〇2)及/或氧化 蝴（B2O3)。 設備101更進一步包含預澄清腔室115，其配置用以 接收來自玻璃熔化器103的熔融玻璃113。如第1與2 201134773 圖圖式說明，預澄清腔室115包含第一攪拌裝置117，用 以在預澄清腔室115中攪拌熔融玻璃113。可配置第一檀 拌裝置117沿著方向箭頭119繞著一垂直軸來轉動，然 而其可考慮該攪拌裝置可繞著一有角度的軸、水平軸等 來轉動。此外或或者，該攪拌裝置可環繞預澄清腔室ιΐ5 的一軸’例如中心軸。在該說明性實施例中，第一攪拌 裝置117包含垂直軸121，其沿著預澄清腔室115的一中 心轴延伸。第一攪拌葉片配置123包含第一組葉片125， 其可一體成型地附接至垂直軸121。可操作性地連接第 馬達127’用以沿著方向箭頭119來轉動垂直轴121， 因而啟動第一攪拌葉片配置123,用以在預澄清腔室115 中攪拌熔融玻璃11 3。 如第2圖所示，預澄清腔室115包含入口 129，用於 接收來自玻璃熔化器103的熔融玻璃。如第3圖所示， 示例性的入口 129包含垂直切面高度（elevati〇nal height)131。入口 129可具有圓形外圍，其中該垂直切面 咼度131包含入口 129的直徑。雖然未顯示，但入口 129 可包含諸如多角形的其他形狀（例如，三角形、矩形等 等）。如第2與3圖中更進一步顯示，預澄清腔室115更 進一步包含出口 133，該出口 133的外圍與入口 129的 外圍是幾何相似的，雖然在更進一步的實施例中可提供 不同形狀。如第2圖所示，可將預澄清腔室115的入口 129設置在比出口 113較低標高的位置上，因而允許在 預澄清腔室115中的熔融玻璃113產生交叉流動。提供 7 201134773 熔融玻璃113的交叉流動可促進與第一攪拌葉片配置 123的交互作用，用以在穿過出口 133之前混合熔融玻 璃 11'3。 設備101更進一步包含澄清腔室135，其配置用以接 收來自預澄清腔室115的熔融玻璃113’並且將大多數的 氣泡137由熔融玻璃113中移除。如圖所示，澄清腔室 U5包含長條型水平管，雖然在更進一步的實施例中可 提供其他腔室配置。如更進一步的說明，可操作性地將 澄清腔室135通至大氣。因此，示例性具體實施例可提 供一澄清腔室，其中在該澄清腔室135中實質上不施加 真空至熔融玻璃113。如文中所使用，實質上無真空係 意指在澄清腔室135中的大氣具有至少0.8大氣壓的壓 力。因此，實質上無真空可包含施加少量真空同時避免 壓力低於0.8大氣壓的具體實施例。 設備101更進一步包含後澄清腔室139，其配置用以 接收來自澄清腔室135的熔融玻璃113。如第1與2圖 圖式說明’後澄清腔室139包含第二攪拌裝置141，用 於在後澄清腔室139中攪拌熔融玻璃113。可配置第二 搜拌裝置141沿著方向箭頭143繞著一垂直軸來轉動， 雖然其可考慮該攪拌裝置可繞著一有角度的軸、水平轴 等來轉動°此外或或者，該攪拌裝置可環繞後澄清腔室 139的一軸’例如中心軸。在該說明性實施例中，第二 授样裝置141包含垂直轴145，其沿著後澄清腔室139 的一中心轴延伸。 201134773 第二搜拌葉片配置147包含第二組葉片 1 4 9 ,其可一。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 TECHNICAL FIELD OF THE INVENTION The present invention relates generally to apparatus and methods for making glass articles, and more particularly to apparatus and methods for agitating molten glass in a pre-fining chamber and a post-clarifying chamber. [Prior Art] Glass manufacturing systems are commonly used to form various glass articles, such as liquid crystal display (LCD) glass sheets. For example, it is known to flow molten glass into an isopipe in which a glass ribbon is formed by a melt down process. This glass strip is then 'divided' to provide a liquid crystal display (LCD) glass sheet. SUMMARY OF THE INVENTION In an exemplary embodiment, a method of making a glass article is provided. The method includes the step of melting a batch of material in a glass melter to produce a molten glass comprising tin dioxide. The method further comprises the steps of transferring the molten glass from the glass melter to the pre-clarification chamber and agitating the molten glass in the pre-clarification chamber. The method further includes the steps of: transferring the molten glass from the pre-clarification chamber to the clarification 4 201134773 chamber' and removing most of the bubbles from the molten glass in the clarification chamber. The method further comprises the step of passing the molten glass from the clarification chamber to the post-clarification chamber, wherein the (four) glass temperature in the post-clarification chamber is less than the molten glass temperature in the pre-clarification chamber. The method further comprises the steps of: agitating the molten glass in the post-clarification chamber and transferring a quantity of molten glass from the post-clarification chamber to the forming vessel for forming a glass article. In other exemplary embodiments, an apparatus for making a glass article is provided. The apparatus includes a glass melter configured to melt the batch material into molten glass, and a pre-clarification chamber configured to receive the molten glass from the glass dissolver. The pre-clarification chamber contains a first agitating device 'for mixing the molten glass in the pre-clarification chamber. The apparatus further includes a clarification chamber 'configured to receive the glazed glass from the pre-clarification chamber' and remove most of the bubbles from the molten glass. The apparatus also includes a post-clarification chamber configured to receive molten glass from the clarification chamber. The post-clarification chamber includes a second agitating means for agitating the molten glass in the post-clarification chamber, wherein the second agitating means is arranged to agitate the molten glass with less than the agitating shear of the first agitating means. The apparatus also further includes a shaped container configured to receive molten glass from the post-clarification chamber and to form a glass article. [Embodiment] Referring now to the drawings showing exemplary embodiments, more complete 201134773 The embodiment is explained. Whenever possible, the same component symbols are used throughout the drawings to represent the same or similar components. However, the present invention may be embodied in many different forms and should not be construed as being limited to the specific embodiments described herein. Figure 1 is a schematic illustration of device 101 configured to make a glass article. In an embodiment, the glass article may comprise: a glass artwork, a glassware, a glass rod, a glass tube, or other glass item. The device can also be used to make glass articles that are expected to be substantially free of air bubbles. For example, the glass article further includes an optical device such as one or more glass lenses of the optical device. In another embodiment, the glass article can comprise a glass sheet, such as a glass sheet for a liquid crystal display. It is further illustrated that the apparatus 1〇1 of the apparatus 1 includes a glass melter 103' configured to melt the batch material ι〇5 from the storage tank 107. The batch material can be introduced along the directional arrow 111 by the batch delivery device 109 through the inlet of the glass melter 1〇3. The batch material 105 is melted into the molten glass crucible 3 inside the glass melter 1〇3. The molten glass H3 can have various compositions depending on the desired characteristics of the glass article and the process conditions. For example, the molten glass 113 may contain a volatile component' which helps to clarify the bubbles from the molten glass to produce a glass article that is substantially free of bubbles. As illustrated in the figure, the molten glass 113 contains a volatile component such as tin dioxide (Sn〇2) and/or oxidized butterfly (B2O3). The apparatus 101 further includes a pre-clarification chamber 115 configured to receive the molten glass 113 from the glass melter 103. The first pre-clarification chamber 115 includes a first agitating means 117 for agitating the molten glass 113 in the pre-refining chamber 115, as illustrated in Figures 1 and 2, 2011. The first sanding device 117 can be configured to rotate about a vertical axis along direction arrow 119, however it is contemplated that the agitating device can be rotated about an angled axis, horizontal axis, or the like. Additionally or alternatively, the agitation means may surround an axis of the pre-clarification chamber ι5, such as a central axis. In the illustrative embodiment, first agitating device 117 includes a vertical axis 121 that extends along a central axis of pre-clarification chamber 115. The first agitating blade configuration 123 includes a first set of blades 125 that are integrally attachable to the vertical axis 121. The first motor 127' is operatively coupled for rotating the vertical shaft 121 along the directional arrow 119, thereby activating the first agitating blade arrangement 123 for agitating the molten glass 113 in the pre-clarification chamber 115. As shown in Fig. 2, the pre-clarification chamber 115 includes an inlet 129 for receiving molten glass from the glass melter 103. As shown in FIG. 3, the exemplary inlet 129 includes an elevation profile height 131. The inlet 129 can have a circular periphery, wherein the vertical section thickness 131 includes the diameter of the inlet 129. Although not shown, the inlet 129 may include other shapes such as polygons (e.g., triangles, rectangles, etc.). As further shown in Figures 2 and 3, the pre-clarification chamber 115 further includes an outlet 133 having a periphery that is geometrically similar to the periphery of the inlet 129, although in further embodiments different shapes may be provided. As shown in Fig. 2, the inlet 129 of the pre-clarification chamber 115 can be disposed at a lower elevation than the outlet 113, thus allowing cross-flow of the molten glass 113 in the pre-refining chamber 115. Providing 7 201134773 The cross flow of molten glass 113 promotes interaction with the first agitating blade configuration 123 for mixing the molten glass 11'3 prior to passing through the outlet 133. The apparatus 101 further includes a clarification chamber 135 configured to receive the molten glass 113' from the pre-refining chamber 115 and remove most of the bubbles 137 from the molten glass 113. As shown, the clarification chamber U5 includes a long horizontal tube, although other chamber configurations may be provided in still further embodiments. As further illustrated, the clarification chamber 135 is operatively passed to the atmosphere. Thus, an exemplary embodiment may provide a clarification chamber in which substantially no vacuum is applied to the molten glass 113 in the clarification chamber 135. As used herein, substantially no vacuum means that the atmosphere in the clarification chamber 135 has a pressure of at least 0.8 atmospheres. Thus, substantially no vacuum can include specific embodiments in which a small amount of vacuum is applied while avoiding a pressure below 0.8 atmosphere. Apparatus 101 further includes a post-clarification chamber 139 configured to receive molten glass 113 from clarification chamber 135. As illustrated in Figures 1 and 2, the rear clarification chamber 139 includes a second agitating means 141 for agitating the molten glass 113 in the post-clarification chamber 139. The second sowing device 141 can be configured to rotate about a vertical axis along the direction arrow 143, although it is contemplated that the agitating device can be rotated about an angled axis, a horizontal axis, etc. Additionally or alternatively, the agitating device An axis 'for example, the central axis of the chamber 139 can be circumscribed. In the illustrative embodiment, the second sample-loading device 141 includes a vertical axis 145 that extends along a central axis of the rear clarification chamber 139. 201134773 The second search blade arrangement 147 comprises a second set of blades 1 4 9 , which can be
葉片配置來的大的熔融玻璃剪力表面積。實際上，如第 2圖所顯示’第二攪拌葉片配置 具有比第一授拌葉片配置123的 1配置147的第二組葉片149 123的第一組葉片125較多數 量的葉片。如此，第二攪拌葉片配置147包含比第一攪 拌葉片配置123來的大的熔融玻璃剪力表面積。 可操作性地連接第二馬達151用以沿著方向箭頭143 來轉動垂直轴145，因而啟動第二攪拌葉片配置147用 以在後澄清腔室139中攪拌溶融玻璃ι13β如圖所示， 第二馬達151可大於第一馬達127及/或可配置第二馬達 151傳送比第一馬達127還要多的扭力。如此，甚至在 第一擾拌葉片配置是等於或小於第二檀拌葉片配置的實 施例中，仍可配置第一攪拌裝置117以小於第二搜拌裝 置141的攪拌剪力來攪拌熔融玻璃113。 如第2圖所示，後澄清腔室139包含入口 153，用於 接收來自澄清腔室135的溶融玻璃，以及出口 I”，用 於傳遞熔融玻璃113至輸送容器157(例如，槽）。如第2 圖所示，後澄清腔室139的入口 153可設置在高於出口 155的位置處，因而允許在後澄清腔室139中的溶融玻 璃113產生交叉流動。熔融玻璃113的交又流動可促進 與第二攪拌葉片配置147的交互作用，用以在穿過出口 201134773 155之前混合炫融玻璃113。 設備101更進一步包含成形容器，其配置用以接收來 自後澄清腔室的熔融玻璃以及形成玻璃物件《成形容器 可包含溶融下拉、孔口拉伸、浮動、壓製、模製、滚製、 射出模製等。如第1圖所示’舉例來說，成形容器可包 含隔離管159’其配置用以進行熔融下拉玻璃物件，例 如利用熔融下拉技術由熔融玻璃113所形成之說明性玻 璃條帶161。 ’ 玻璃熔化器103通常是由耐熱材料所製成，例如耐火 磚（例如，陶瓷）^設備101可更進一步包含一些構件， 其通常是由鉑或是含鉑金屬所製成，例如鉑-錄、鉑-錶 以及其組合’但也可包含耐熱材料，例如鉬、鈀、銖、 钽、鈦、鎢、釕、鐵、锆及其合金及/或二氧化锆。含鉑 構件可包含一或多個預澄清腔室丨丨5、澄清腔室i 3 5、後 澄清腔室139、輸送容器157、一個降流管丨63以及通往 成形容器的一個入口 165。含鉑構件亦可包含一或多個 連接管，其將各種容器彼此連接。 參考第1圖，製造玻璃物件的方法包含下列步驟：在 玻璃溶化器中溶化批次材料1〇5，用以產生具有二氧化 錫的熔融玻璃113。在一實施例中，熔融玻璃亦可包含 氧化硼。一旦完成熔化步驟，即由該玻璃熔化器1〇3傳 遞熔融玻璃113並且穿過預澄清腔室115的入口 129，然 後在預澄清腔室115中利用第一馬達127來攪拌熔融玻 璃。如第3圖所圖示說明，將熔融玻璃113以溶融玻璃 10 201134773 流113的方式引進預澄清腔室115中，其中，將進入預 澄凊腔至的溶融玻璃流垂直切面高度的上半部的至少 20% (以元件符號167表示之）混合遍及在預澄清腔室115 中熔融玻璃113垂直切面高度169的至少75〇/〇。藉由將 二氧化錫、氧化硼及/或其他澄清劑分散遍及輸出穿過出 口 133的溶融玻璃’可提供溶融玻璃流垂直切面高度的 上半部部分足夠的混合用以幫助熔融玻璃的均勻化，因 而增加在澄清腔室135中移除氣泡的效率。如第3圖所 繪示說明的「+」記號171，垂直切面上半部的2〇% (以 元件符號167表示之）的分配率是小於二氧化錫及/或氧 化硼的平均分配。然而，在以第一攪拌裝置丨丨7攪拌後， s己號171可預期地更分散遍及在離開的熔融玻璃流中， 該熔融玻璃傳送穿過出口 133至澄清腔室135。在預澄 清腔室中形成更均勻的熔化可更進一步地有助於縮小在 熔融玻璃流中的高含水區域。舉例來說，當玻璃溶化器 103使用空氣-氧氣燃燒器來加熱溶融玻璃表面時，可產 生局部的高含水區域，其顯示在第3圖中以「+」記號 171表示。以富含水的空氣-氧氣燃燒大氣來接觸熔融玻 璃’可使表面區域富含水。假如熔融玻璃流的富含水區 域實質上接觸到含鉑容器的璧面，則會產生氣泡，當所 溶解的水裂解成氫氣時’氫氣會滲透璧面而留下氧氣， 假如無法適當地控制氫氣的滲透，那麼氧氣會形成氣泡 且後續會造成最終玻璃產品的瑕疵。在以第一攪拌裝置 117攪拌之後，含水區可以更有利地移動朝向均勻的集 201134773 中。在預澄清腔室115中的攪拌步驟可包含相對較低的 熔融玻璃攪拌剪力，用以提供澄清劑的適當分散。如此， 可節省能源並且可簡化或降低昂貴的攪拌構件。 如第2圖所示，一旦熔融玻璃流接著進入澄清腔室 中，氣泡137可自由地升高至在澄清腔室135中的熔融 玻璃表面173，因而釋放至澄清腔室中的大氣175中。 可操作性地提供壓力平衡閥門1 77，用以確認實質上沒 有施加真空，而幫助將氣泡由熔融玻璃中移除。因為實 質上沒有施加真空，所以可避免在澄清腔室135中產生 過量的二氧化錫及/或氧化硼揮發。在熔融玻璃113傳遞 穿過澄清腔室135之後，熔融玻璃ι13可實質上不具有 任何氣泡。然而’可能會形成帶狀成形部分179，其表 示溶融玻璃的非均勻部分。 接著’熔融玻璃113進入後澄清腔室139，在其中以 第二攪拌裝置141攪拌熔融玻璃《•一旦熔融玻璃傳遞至 成形容器（例如，隔離管丨59)，則熔融玻璃就包含實質上 均勻的組成，基本上不具有帶狀成形部分。 如溫度量規181、183所示，在後澄清腔室中的熔融玻 填溫度是低於在預澄清腔室中的熔融玻璃溫度。熔融玻 璃113在預澄清腔室中的黏度是小於在後澄清腔室中。 為了有效率地攪拌熔融玻璃，可使用較大的馬達151(當 與馬達127比較時）’並且在後澄清腔室中的攪拌剪力是 高於在預澄清腔室中的攪拌剪力。再者，為了在熔融玻 填進入成形谷器之前能夠有效地使炫融玻璃均勻化，在 12 201134773 後澄清腔室中需要更充分地混合熔融玻璃。 接著，熔融玻璃進入成形容器中，用以形成玻璃物件》 舉例來說，如圖所示，成形容器包含隔離管159，以及 玻璃物件包含藉由熔融下拉製程由玻璃條帶161所形成 的玻璃片。 對於在此技術領域中具有通常知識者來說，在不偏離 所申請發明的精神以及範疇之下，可實施各種修飾例以 及變化例。 【圖式簡單說明】 參考所附圖式來閱讀上述關於本發明之實施方 式，將可瞭解本發明之態樣以及其他態樣。以下為所附 圖式之簡單說明： 第1圖為製造玻璃片之設備示意圖； 第2圖為第1圖設備之部分放大圖； 第3圖為沿著第2圖中的3-3線所示之戴面圖；以及 第4圖為沿著第2圖中的q線所示之戴面圖 13 201134773 【主要元件符號說明】 101 設備 105 批次材料 109 批次輸送裝置 113 溶融玻璃 117 第一攪拌裝置 121 垂直軸 125 第一組葉片 129 入口 133 出π 137 氣泡 141 第二攪拌裝置 145 垂直軸 149 第二組葉片 153 入口 157 輸送容器 161 玻璃條帶 165 入口 169 尚度 173 熔融玻璃表面 177 壓力平衡閥門 181 溫度量規 玻璃熔化器 儲存槽 方向箭頭 預澄清腔室 方向箭頭 第一攪拌葉片配置 第一馬達 垂直切面高度 澄清腔室 後澄清腔室 方向箭頭 第二攪拌葉片配置 第二馬達 出σ 隔離管 降流管 熔融玻璃流高度的20% 記號 大氣 帶狀成形部分 溫度量規The large molten glass shear surface area from the blade configuration. In fact, as shown in Fig. 2, the second agitating blade configuration has a greater number of blades than the first set of blades 125 of the second set of blades 149 123 of the 1 configuration 147 of the first mixing blade configuration 123. As such, the second agitating blade arrangement 147 includes a larger molten glass shear surface area than the first agitating blade configuration 123. The second motor 151 is operatively coupled for rotating the vertical shaft 145 along the directional arrow 143, thereby activating the second agitating blade arrangement 147 for agitating the molten glass ι13β in the rear clarification chamber 139 as shown, second The motor 151 can be larger than the first motor 127 and/or the configurable second motor 151 can transmit more torque than the first motor 127. Thus, even in the embodiment in which the first spoiler blade configuration is equal to or smaller than the second flanking blade configuration, the first agitating device 117 can be configured to agitate the molten glass 113 with less than the agitating shear force of the second scavenging device 141. . As shown in Fig. 2, the post-clarification chamber 139 includes an inlet 153 for receiving molten glass from the clarification chamber 135, and an outlet I" for transferring the molten glass 113 to the delivery container 157 (e.g., a tank). As shown in Fig. 2, the inlet 153 of the rear clarification chamber 139 can be disposed at a position higher than the outlet 155, thereby allowing the molten glass 113 in the rear clarification chamber 139 to have a cross flow. The flow of the molten glass 113 can be flowed again. The interaction with the second agitating blade arrangement 147 is promoted to mix the glazing glass 113 prior to passing through the outlet 201134773 155. The apparatus 101 further includes a shaped vessel configured to receive molten glass from the post-clarification chamber and form Glass article "The shaped container may comprise melt down, orifice stretch, float, press, molding, rolling, injection molding, etc. As shown in Figure 1 'for example, the shaped container may comprise a separator 159' An illustrative glass strip 161 configured to melt down the glass article, such as formed by molten glass 113 using a melt down pull technique. 'The glass melter 103 is typically heat resistant. Materials made of materials, such as refractory bricks (e.g., ceramics), may further comprise components, typically made of platinum or platinum-containing metals, such as platinum-plated, platinum-sheets, and combinations thereof. Heat resistant materials such as molybdenum, palladium, rhodium, iridium, titanium, tungsten, ruthenium, iron, zirconium and alloys thereof and/or zirconium dioxide may also be included. The platinum-containing member may comprise one or more pre-clear chambers 丨丨5 a clarification chamber i 3 5, a post-clarification chamber 139, a transfer container 157, a downcomer 丨 63, and an inlet 165 to the shaped container. The platinum-containing member may also include one or more connecting tubes, which will The containers are connected to each other. Referring to Figure 1, a method of making a glass article comprises the steps of: melting a batch of material 1〇5 in a glass melter to produce molten glass 113 having tin dioxide. In one embodiment, melting The glass may also contain boron oxide. Once the melting step is completed, the molten glass 113 is transferred from the glass melter 1〇3 and passed through the inlet 129 of the pre-clarification chamber 115, and then the first motor 127 is utilized in the pre-clarification chamber 115. To stir the molten glass Glass, as illustrated in Figure 3, the molten glass 113 is introduced into the pre-clarification chamber 115 in the form of a molten glass 10 201134773 stream 113, wherein the molten glass flow into the pre-clear chamber is at the vertical section height At least 20% of the half (indicated by reference numeral 167) is mixed throughout at least 75 Å/〇 of the vertical section height 169 of the molten glass 113 in the pre-clarification chamber 115. By disposing tin dioxide, boron oxide, and/or the like The clarifying agent is dispersed throughout the upper portion of the molten glass that is output through the outlet 133 to provide a vertical section height of the molten glass stream sufficient to aid in homogenization of the molten glass, thereby increasing the removal of bubbles in the clarification chamber 135. effectiveness. As indicated by the "+" symbol 171 in Fig. 3, the distribution ratio of 2% (indicated by the symbol 167) of the half of the vertical section is smaller than the average distribution of tin dioxide and/or boron oxide. However, after agitation with the first agitation unit 丨丨7, the sigma 171 is expected to be more dispersed throughout the exiting molten glass stream which is conveyed through the outlet 133 to the clarification chamber 135. The formation of a more uniform melting in the pre-clearing chamber can further help to reduce the high water content in the molten glass stream. For example, when the glass dissolver 103 uses an air-oxygen burner to heat the surface of the molten glass, a locally high water-containing region can be produced, which is indicated by a "+" mark 171 in FIG. The surface area is enriched with water by burning the atmosphere with water-rich air-oxygen to contact the molten glass. If the water-rich region of the molten glass stream is in substantial contact with the surface of the platinum-containing vessel, bubbles will be formed. When the dissolved water is cracked into hydrogen, hydrogen will penetrate the surface and leave oxygen, if it is not properly controlled. The permeation of hydrogen, then oxygen will form bubbles and will subsequently cause defects in the final glass product. After agitation with the first agitating means 117, the aqueous zone can be moved more advantageously towards a uniform set 201134773. The agitation step in the pre-clarification chamber 115 can include a relatively low molten glass agitation shear to provide proper dispersion of the fining agent. In this way, energy can be saved and expensive agitation members can be simplified or reduced. As shown in Fig. 2, once the molten glass stream then enters the clarification chamber, the bubbles 137 are freely raised to the molten glass surface 173 in the clarification chamber 135, and thus released into the atmosphere 175 in the clarification chamber. A pressure equalization valve 1 77 is operatively provided to confirm that substantially no vacuum is applied to help remove air bubbles from the molten glass. Since substantially no vacuum is applied, excessive amounts of tin dioxide and/or boron oxide volatilization in the clarification chamber 135 can be avoided. After the molten glass 113 is passed through the clarification chamber 135, the molten glass 113 may have substantially no air bubbles. However, a band-shaped forming portion 179 may be formed which represents a non-uniform portion of the molten glass. Then 'the molten glass 113 enters the post-clarification chamber 139 where the molten glass is agitated by the second stirring device 141." Once the molten glass is transferred to the forming vessel (for example, the isolating tube 59), the molten glass contains substantially uniform The composition basically does not have a belt-shaped forming portion. As indicated by temperature gauges 181, 183, the molten glass fill temperature in the post-clarification chamber is lower than the molten glass temperature in the pre-clarification chamber. The viscosity of the molten glass 113 in the pre-clarification chamber is less than in the subsequent clarification chamber. In order to efficiently agitate the molten glass, a larger motor 151 (when compared to the motor 127) can be used and the agitation shear force in the post-clarification chamber is higher than the agitation shear force in the pre-clarification chamber. Furthermore, in order to be able to effectively homogenize the glazing glass before the molten glass is filled into the shaped granulator, it is necessary to more fully mix the molten glass in the clarification chamber after 12 201134773. Next, the molten glass enters the forming vessel to form a glass article. For example, as shown, the forming vessel includes a separator tube 159, and the glass article comprises a glass sheet formed by the glass strip 161 by a melt down process. . Various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The aspects of the present invention, as well as other aspects, will be understood by reference to the appended claims. The following is a brief description of the drawings: Fig. 1 is a schematic view of a device for manufacturing a glass piece; Fig. 2 is a partial enlarged view of the device of Fig. 1; Fig. 3 is a line along line 3-3 of Fig. 2 Fig. 4 shows the wearing surface shown along the q line in Fig. 2 201134773 [Description of main component symbols] 101 Equipment 105 Batch material 109 Batch conveying device 113 Melting glass 117 A stirring device 121 vertical axis 125 first set of blades 129 inlet 133 out π 137 bubble 141 second stirring device 145 vertical axis 149 second group of blades 153 inlet 157 conveying container 161 glass strip 165 inlet 169 degree 173 molten glass surface 177 Pressure balance valve 181 temperature gauge glass melter storage tank direction arrow pre-clarification chamber direction arrow first stirring blade configuration first motor vertical section height clarification chamber rear clarification chamber direction arrow second stirring blade configuration second motor out σ Isolation tube downflow tube 20% of the height of the molten glass flow