Apparatus for the surface cleaning of quartz-crystal pieces
    1.
    发明授权
    Apparatus for the surface cleaning of quartz-crystal pieces 失效
    用于石英晶片表面清洁的装置

    公开(公告)号:US4445523A

    公开(公告)日:1984-05-01

    申请号:US489929

    申请日:1983-04-29

    CPC分类号: B08B3/042 C03C1/022

    摘要: Apparatus for cleaning the surface of small quartz-crystal pieces with aqueous hydrofluoric acid is disclosed wherein the quartz pieces are introduced into a vessel containing a conveying means and conveyed e.g. horizontally in counter-current to aqueous hydrofluoric acid introduced at the opposed end of the vessel. During the washing the quartz pieces are tumbled.

    摘要翻译: 公开了用氢氟酸水溶液清洗小石英晶片的表面的装置,其中将石英片引入含有输送装置的容器中, 水平地与在容器的相对端引入的氢氟酸水反向。 在洗涤过程中,石英碎片翻滚。

    Method of making quartz glass crucibles, and apparatus carrying out the
method
    2.
    发明授权
    Method of making quartz glass crucibles, and apparatus carrying out the method 失效
    制造石英玻璃坩埚的方法,以及进行该方法的设备

    公开(公告)号:US4416680A

    公开(公告)日:1983-11-22

    申请号:US247394

    申请日:1981-03-25

    摘要: To make quartz glass crucibles suitable for drawing of single crystal silicon for electronic semiconductor applications, granular crystalline quartz or amorphous quartz glass is introduced into a rotating hollow mold which has gas-pervious wall regions at the side walls and bottom thereof, for example by having bores extending through a metal mold or being made of porous, sintered material. After introducing the raw material, a heat source, such as an electric arc, is introduced into the hollow mold, causing first sintering and then melting of an inner layer; upon introduction of the hollow mold, a vacuum is applied to the outside of the hollow mold, for example between the housing and the mold body, and, during continued rotation, to draw out any included gases and cause melting-together of vacuoles which, otherwise, might form due to included spaces and gases within the granular filling material. The vacuum is maintained during melting and rotation, heating being interrupted when a sufficienty thick inner wall of molten material has been formed, with an adjacent layer of sintered material leaving, however, granular material immediately adjacent the inner walls of the hollow mold to provide for heat insulation of the molten layer with respect to the hollow mold and protect the surface of the mold. The finished crucible can be ejected by introducing compressed air, rather than vacuum, to the outside of the hollow mold. Suitable vacuum is a pressure of less than 5,000 Pa, preferably less than 1,000 Pa.

    摘要翻译: 为了制造适用于电子半导体应用的单晶硅拉制的石英玻璃坩埚,将颗粒状晶体石英或无定形石英玻璃引入旋转的中空模具中,该空心模具在侧壁及其底部具有气体可渗透的壁区域,例如通过 孔穿过金属模具或由多孔烧结材料制成。 在引入原料之后,将诸如电弧的热源引入中空模具中,从而首先烧结然后熔化内层; 在引入中空模具时,将真空施加到中空模具的外部,例如在壳体和模具体之间,并且在连续旋转期间,抽出任何所包含的气体并使空泡熔化在一起, 否则,可能由于颗粒填充材料中包含的空间和气体而形成。 在熔化和旋转期间保持真空,当形成足够厚的熔融材料内壁时,加热中断,邻近的烧结材料层离开直接邻近中空模的内壁的颗粒材料,以提供 熔融层相对于中空模具的隔热并保护模具的表面。 可以通过将压缩空气而不是真空引入到中空模具的外部来喷射成品坩埚。 合适的真空度是小于5,000Pa,优选小于1,000Pa的压力。

    Apparatus for the combustion of harmful gases
    3.
    发明授权
    Apparatus for the combustion of harmful gases 失效
    用于燃烧有害气体的装置

    公开(公告)号:US4327057A

    公开(公告)日:1982-04-27

    申请号:US195162

    申请日:1980-10-08

    摘要: An apparatus for the oxidative combustion of harmful gases by means of a burner is disclosed. The apparatus comprises a vertically disposed cooling jacket provided with a coolant inlet and coolant outlet which surrounds a combustion chamber. The combustion chamber is connected to and in gaseous communication with a condenser disposed therebeneath. A flushing device is provided in fluid communication with these components, the same being disposed above the combustion chamber and in gaseous communication therewith. A burner is disposed above the flushing device. An electrical igniter is disposed between the flushing device and the burner.

    摘要翻译: 公开了一种通过燃烧器氧化燃烧有害气体的装置。 该设备包括设置有围绕燃烧室的冷却剂入口和冷却剂出口的垂直设置的冷却套。 燃烧室与设在其旁边的冷凝器连接并与其气态连通。 提供与这些部件流体连通的冲洗装置,其同样设置在燃烧室上方并与其气体连通。 在冲洗装置上方设有燃烧器。 电气点火器设置在冲洗装置和燃烧器之间。

    Cleaning attachment to clean flask-shaped receivers of chemical analysis
apparatus
    4.
    发明授权
    Cleaning attachment to clean flask-shaped receivers of chemical analysis apparatus 失效
    清洁附件清洁化学分析仪器的烧瓶形接收器

    公开(公告)号:US4228129A

    公开(公告)日:1980-10-14

    申请号:US50317

    申请日:1979-06-20

    CPC分类号: G01N31/12 B01L99/00

    摘要: An essentially circular header is formed with an interior trough to which a supply duct for cleaning fluid, terminating therein tangentially so that cleaning fluid introduced through the supply duct into the trough of the header and flowing thereinto will be subjected to a swirling motion. The header terminates in a neck portion of substantially reduced diameter which has an outer conically converging surface which fits into a conically diverging surface of a flask, receiver, or other chemical apparatus to be cleaned. Preferably, the neck portion is shorter than the receiving end of the mouth portion of the receiver so that a swirling film of liquid will flow downwardly, by gravity, from the receiver through the neck portion and into the still converging mouth portion of the receiver to be cleaned, to then spread out along the inner walls of the receiver, while still swirling, and efficiently clean the receiver element, without requiring disassembly of the receiver element from remaining portions of the chemical analysis apparatus.

    摘要翻译: 基本上圆形的头部形成有内部槽,用于清洁流体的供应管道切向到其上,使得通过供应管道引入到集管的槽中并且流入其中的流动的清洁流体将经受旋转运动。 头部终止于基本上减小的直径的颈部,其具有外锥面会聚表面,该外锥面汇合表面适合于烧瓶,接收器或其他要清洁的化学设备的锥形发散表面。 优选地,颈部比接收器的口部的接收端短,使得液体的旋转膜将通过重力从接收器向下流过颈部并进入接收器的静止收敛的口部, 清洁,然后沿着接收器的内壁分散,同时仍然旋转,并且有效地清洁接收器元件,而不需要将接收器元件从化学分析装置的剩余部分拆卸下来。

    Method and apparatus for the decomposition of specimens of solid organic
substances
    5.
    发明授权
    Method and apparatus for the decomposition of specimens of solid organic substances 失效
    固体有机物质分解方法和装置

    公开(公告)号:US4499191A

    公开(公告)日:1985-02-12

    申请号:US375201

    申请日:1982-05-05

    摘要: Specimens of solid organic substances are decomposed by grinding the specimen to powder having particles of a size smaller than 75 microns, and then compressing the powder specimen. The compressed powder specimen is abraded by means of a scraper, and the abraded material metered out in predetermined amounts for incineration in an injector burner suitable for solids. In this manner, large quantities of specimen material which might contain elements that attack quartz glass can be incinerated without causing damage to the quartz glass burner. The apparatus for decomposing specimens of solid organic substances includes an injector burner that communicates with a powder processing and proportioning device through a flexible tube. The powder processing and proportioning device includes a specimen container for compressed powder, supported by a rotatable fixture to rotate the specimen container. A plug provided in the specimen container, but having radial clearance with respect to the container walls is held by a vertically movable fixture that furnishes movement to the plug along the axis of the specimen container. The scraper for abrading the powder specimen is attached to the plug and is thus movable toward the powder specimen while the container is being rotated. Abraded powder is drawn through the flexible tube to the burner.

    摘要翻译: 通过将样品研磨成具有小于75微米的颗粒的粉末,然后压缩粉末样品,分解固体有机物质样品。 压缩的粉末样品通过刮刀磨损,并且磨损的材料以预定量计量,用于在适合于固体的喷射器燃烧器中焚烧。 以这种方式,可能会含有可能含有撞击石英玻璃的元素的大量试样材料可被焚烧而不会损坏石英玻璃燃烧器。 用于分解固体有机物质试样的装置包括通过柔性管与粉末处理和配比装置连通的喷射器燃烧器。 粉末处理配比装置包括用于压缩粉末的样本容器,由可旋转夹具支撑以旋转样品容器。 设置在样本容器中但相对于容器壁具有径向间隙的塞子由可垂直移动的夹具保持,该固定装置沿着试样容器的轴线向插塞提供运动。 用于研磨粉末试样的刮刀附接到塞子上,并且因此在容器旋转的同时可朝向粉末试样移动。 磨损的粉末通过柔性管被吸入燃烧器。