Abstract:
Semiconductor material, in particular silicon, is deposited onto heated carrier members from gaseous semiconductor compounds within a chamber formed by a glass or quartz dome and a base member. Breakage of the dome is avoided by a pressure chamber surrounding the glass dome.
Abstract:
A light piping unit for use in supplying radiant energy to the interior of a pressure vessel having an internal operating pressure differing from ambient pressure external to the vessel. The unit includes an elongated optical light pipe formed intermediate its ends with an integral frusto-conically shaped mounting surface. The light pipe extends through an aperture in the wall of the pressure vessel with the mounting surface thereof in fluid sealed engagement with a cooperating frusto-conically shaped mounting surface defined in a mounting fixture attached to the vessel. The mounting surfaces of the light pipe and fixture are maintained in pressure-fluid sealing engagement with each other by the difference between the vessel operating and the ambient pressures acting on the inner and outer ends of the light pipe. A radiant energy source is accurately supported in proximity to an essentially conically shaped outer end of the light pipe either directly by the light pipe or by the mounting fixture.
Abstract:
A sight glass assembly comprising housing means having an opening therethrough, a lens mounted in the opening, the opening having an inclined wall, resilient packing means interposed between the lens and the inclined wall of the opening, a faceplate disposed about the lower periphery of the lens engageable with the packing member and means for securing the faceplate to the housing means to apply a force on the packing means directed against the inclined wall of the opening in the housing means whereby the packing means is forced toward the lens to provide a compressive force about the periphery thereof.
Abstract:
A sealed observation element for viewing the flow of molten liquid during the operation of a sulfur recovery unit comprises at least one sight glass that is heated and which may be swept with a purge gas supplied through one or more bleed rings to prevent condensation or deposition of materials on the side of the sight glass exposed to the process stream.
Abstract:
PURPOSE: A view port of a chemical vapor deposition apparatus for manufacturing a semiconductor is provided to increase endurance and to improve production yield, by easily observing the inside of a chamber through a window and by remarkably lengthening a cleaning period caused by contamination of the window. CONSTITUTION: A predetermined size of an opening(11) is formed in a side of the side surface of the second electrode(10) constituting the outer wall of the chamber, and a bracket(20) is so formed that the outer circumferential portion of the opening is protruded. The window(30) is inserted into the bracket, and is closely adhered to the outer circumferential portion of the opening by an O ring(31). A cap unit(40) is formed along the end portion of the outer circumference of a hole(21) opening a side surface of the bracket. One end of the cap unit is hinge-coupled to a corresponding end portion of the outer circumference of the bracket, and the other end of the cap unit is detachably connected to a corresponding end portion of the bracket by a lock unit(41). An adiabatic unit(50) is closely and simultaneously adhered to the hole formed on the outer side surface of the bracket and the one surface of the window while adhered to the inner side surface of the cap unit.
Abstract:
La présente invention concerne un dispositif pour la synthèse et l'étude de composés sous températures et pressions contrôlées. Un dispositif selon l'invention (200, 300) pour la synthèse et l'étude de composés sous températures et pressions contrôlées, comprend: un corps (201, 301) délimitant une chambre à vide (202, 302) comprenant des moyens de régulation de la température (206, 306, 208, 308) et de mise sous vide (210, 310), et présentant une ou plusieurs fenêtres optiques (205, 305, 216) permettant d'observer à l'intérieur de la chambre depuis l'extérieur, - des moyens de régulation de la température (206, 306, 208, 308) destinés à réguler la température à l'intérieur de la chambre à vide (202, 302), et - des moyens de mise sous vide (210, 310) destinés à réguler la pression dans la chambre à vide (202, 302) et se caractérise en ce qu'il comporte, à l'intérieur de la chambre à vide (202, 302), une structure étanche (10, 10') délimitant une chambre étanche (13, 13') présentant une ou plusieurs fenêtres optiques (16, 16', 19) en regard de l'une ou des fenêtres (205, 305, 216) dudit corps, et au moins un conduit (213, 213') qui est en communication fluidique d'une part avec l'intérieur de ladite chambre étanche (13, 13') et, d'autre part, avec une sortie (212, 312) qui est pratiquée dans le corps (201, 301) et qui est prévue pour être connectée à une ou plusieurs sources de gaz de synthèse dudit composé ou échantillon.
Abstract:
A sight glass apparatus for viewing the interior of a pressurised vessel, chamber or a pipe conveying fluid under pressure is described. The sight glass apparatus comprises a sight glass assembly mounted over an opening into the vessel, chamber or pipe, the sight glass assembly comprising a sight glass adjacent the opening which provides a window to the inside of the vessel, chamber or pipe, and a containment vessel mounted behind and/or around the sight glass assembly for containing fluid exiting the opening in the pipe in the event that the sight glass assembly fails. In this way, even if the sight glass assembly fails, the pressurised fluid within the pressurised vessel, chamber or pipe is safely contained. In addition, a secondary sight glass can be provided behind the first, with a liquid or gel, or minimal gap, between the primary and secondary glasses to reduce the likelihood of a failure in the first sight glass triggering failure of the second sight glass, and/or a valve can be provided to automatically isolate the pressure system upon a sight glass failure.