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公开(公告)号：US4655812A
公开(公告)日：1987-04-07
申请号：US776630
申请日：1985-09-16
申请人： John F. Blumenfeld
发明人： John F. Blumenfeld
摘要： A forehearth for a glass furnace includes a roof formed of a plurality of roof blocks designed to provide below the roof blocks a central longitudinal channel and side channels on each side of the central channel. An electric heating element is positioned in a bore in the roof blocks substantially directly above the side channels to permit radiation of heat to the glass surface above the side channels. The temperature of the molten glass utilizing the construction can be effectively uniformly controlled across its cross-section.
摘要翻译： 用于玻璃炉的前炉包括由多个屋顶块形成的屋顶，其被设计成在屋顶下方提供中央纵向通道和在中央通道的每一侧上的侧通道。 电加热元件位于大致直接在侧通道上方的屋顶块的孔中，以允许将热量辐射到侧通道上方的玻璃表面。 利用该结构的熔融玻璃的温度可以跨过其横截面有效地均匀地控制。
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公开(公告)号：US4287380A
公开(公告)日：1981-09-01
申请号：US76580
申请日：1979-09-18
CPC分类号： H05B3/03
摘要： A molybdenum electrode is mounted in a stepped aperture in the sidewall of the forehearth such that the inner end portion of the electrode is immersed in the molten glass where the molybdenum is effectively isolated from oxidizing agents. The outer end portion of the electrode is shielded in a high temperature alloy steel sleeve, which sleeve is spaced from the electrode to provide an annular space therebetween. A ceramic fiberous material is provided between the inner end of the sleeve and the electrode, and a high temperature alloy steel plug is threadably secured to the outer ends of both the sleeve and the electrode to seal the outer end of this annular space, and to serve as an electrical terminal for the electrode. The molten glass solidifies inside the sleeve's inner end to seal the inner end of the sleeve. The assembly is clamped to the furnace framework by an insulated bracket adjacent the outer end of the sleeve, which bracket is designed to thrust the assembly inwardly so that an annular flange on the sleeve abuts the sidewall of the refractory channel, which sidewall defines the step in the aperture of the furnace forehearth sidewall itself.
摘要翻译： 钼电极安装在前炉侧壁的台阶孔中，使得电极的内端部浸入熔融玻璃中，其中钼与氧化剂有效隔离。 电极的外端部在高温合金钢套筒中被屏蔽，该套筒与电极间隔开以在其间形成环形空间。 陶瓷纤维材料设置在套筒的内端和电极之间，高温合金钢塞可螺纹地固定到套筒和电极的外端，以密封该环形空间的外端，并且 作为电极的电气端子。 熔融玻璃凝固在套筒的内端内部以密封套筒的内端。 组件通过邻近套管外端的绝缘支架夹紧在炉框架上，该支架被设计成向内推动组件，使得套筒上的环形凸缘邻接耐火材料通道的侧壁，该侧壁限定步骤 在炉前侧壁本身的孔中。
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公开(公告)号：US4680051A
公开(公告)日：1987-07-14
申请号：US797102
申请日：1985-11-12
申请人： John F. Blumenfeld , Frank Bubon
发明人： John F. Blumenfeld , Frank Bubon
CPC分类号： C03B7/06
摘要： A forehearth for molten glass having at least one cooling zone which includes a trough and a roof over the trough. A pair of spaced projections extending downwardly from the roof to define a central channel over the molten glass and side channels over the respective side portions of the molten glass. The roof has an area of reduced thickness in the portion over the central channel. An enclosed upper cooling channel extends longitudinally over the area of reduced thickness and has an inlet and an outlet spaced from the inlet, and heating means are provided for each side portion of the forehearth.
摘要翻译： 一种用于熔融玻璃的前炉，其具有至少一个冷却区，该冷却区包括槽和槽的顶部。 从屋顶向下延伸的一对间隔开的突出物，以在熔融玻璃上方限定一个中心通道，并在熔融玻璃的相应侧部上方设置一个侧面通道。 屋顶在中央通道上的部分具有减小厚度的区域。 封闭的上部冷却通道在厚度减小的区域上纵向延伸，并且具有与入口间隔开的入口和出口，并且为前炉的每个侧部设置加热装置。
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公开(公告)号：US4662927A
公开(公告)日：1987-05-05
申请号：US809788
申请日：1985-12-17
申请人： John F. Blumenfeld
发明人： John F. Blumenfeld
CPC分类号： C03B7/06
摘要： Temperature conditioning of molten glass flowing from a melter to a glassware-forming machine is described. In addition to the attempt at conditioning the molten glass in the forehearth in the usual manner, in accordance with this invention, distribution channels leading from the throat of the molten glass supply to the forehearth are provided with conditioning apparatus. Most particularly, the conditioning apparatus is such that the conditioning temperatures at the opposite sides of the distribution channel may be varied. For example, at one side the interior of the distribution channel may be being heated while the opposite side is being cooled. It is also possible to heat one side to a greater degree than the other while heating both sides. Most particular, the burner construction is such that the burners may be utilized either to heat the interior of the distribution channel or to cool the same. Combustion supporting air is delivered to the burners from a separate source and, when the burner is not being utilized for heating purposes, the same air may be utilized for cooling purposes.
摘要翻译： 描述从熔化器流到玻璃器皿形成机的熔融玻璃的温度调节。 除了按通常的方式对前炉中的熔融玻璃进行调节的尝试之外，根据本发明，从熔融玻璃供应器的喉部通向前炉的分配通道设置有调节装置。 最具体地，调节装置使得可以改变在分配通道的相对侧的调节温度。 例如，在一侧，分配通道的内部可以被加热，同时相对侧被冷却。 在加热两侧时，也可以将一侧加热到比另一侧更大的程度。 最特别的是，燃烧器结构使得燃烧器可以用于加热分配通道的内部或者冷却它们。 燃烧支持空气从单独的来源输送到燃烧器，并且当燃烧器不被用于加热目的时，可以使用相同的空气用于冷却目的。
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公开(公告)号：US4552579A
公开(公告)日：1985-11-12
申请号：US559160
申请日：1983-12-07
申请人： John F. Blumenfeld , Frank Bubon
发明人： John F. Blumenfeld , Frank Bubon
CPC分类号： C03B7/06
摘要： A forehearth for the conveyance of molten glass has at least one cooling zone which includes a trough and a roof over the trough. A pair of spaced projections extend downwardly from the roof to define in the space below the roof a central channel over the central portion of the stream of molten glass and side channels over respective side portions of the stream of glass. The roof has at least one area of reduced thickness in the portion over the central channel. An enclosed upper cooling channel extends longitudinally of the forehearth over the area of reduced thickness and has an inlet and an outlet spaced longitudinally from the inlet. Heating means are provided for applying heat to each side portion of the stream of glass.
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