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1. WO1996002473 - WELDING/SEALING GLASS-ENCLOSED SPACE IN A VACUUM

Publication Number WO/1996/002473
Publication Date 01.02.1996
International Application No. PCT/US1995/009068
International Filing Date 13.07.1995
Chapter 2 Demand Filed 09.02.1996
IPC
C03B 23/24 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
23Re-forming shaped glass
20Uniting glass pieces by fusing without substantial reshaping
24Making hollow glass sheets or bricks
CPC
C03B 23/245
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
23Re-forming shaped glass
20Uniting glass pieces by fusing without substantial reshaping
24Making hollow glass sheets or bricks
245Hollow glass sheets
C03C 27/06
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
27Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
06Joining glass to glass by processes other than fusing
E06B 3/6612
EFIXED CONSTRUCTIONS
06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
3Window sashes, door leaves, or like elements for closing ; wall or like; openings; Layout of fixed or moving closures, e.g. windows ; in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
66Units comprising two or more parallel glass or like panes permanently secured together
6612Evacuated glazing units
Y02A 30/25
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
30Adapting or protecting infrastructure or their operation
20in buildings, dwellings or related infrastructures
24Structural elements or technologies for improving thermal insulation
249Glazing
25Vacuum glazing
Y02B 80/24
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
80Architectural or constructional elements improving the thermal performance of buildings
20Windows or doors
22Glazing
24Vacuum glazing
Applicants
  • MIDWEST RESEARCH INSTITUTE [US/US]; 425 Volker Boulevard Kansas City, MO 64110, US
Inventors
  • TRACY, C., Edwin; US
  • BENSON, David, K.; US
Agents
  • O'CONNOR, Edna, M. ; National Renewable Energy Laboratory 1617 Cole Boulevard Golden, CO 80401, US
Priority Data
08/274,78814.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) WELDING/SEALING GLASS-ENCLOSED SPACE IN A VACUUM
(FR) SOUDAGE/SCELLEMENT D'UN ESPACE SOUS VIDE ENTRE DEUX FEUILLES DE VERRE
Abstract
(EN)
A method of welding and sealing the edges of two juxtaposed glass sheets (12, 14) together to seal a vacuum space between the sheets comprises the steps of positioning a radiation absorbant material (110), such as FeO, VO2, or NiO, between the radiation transmissive glass sheets adjacent the edges and then irradiating the absorbant material, preferably with a laser beam, through at least one of the glass sheets (12, 14). Heat produced by the absorbed radiation in the absorbant material melts glass in the portions of both glass sheets (12, 14) that are adjacent the absorbant material, and the melted glass from both sheets flows together to create the weld (216) when the melted glass cools and hardens. The absorbant material can be dissolved and diffused into the melted glass to the extent that it no longer absorbs enough energy to keep the glass melted, thus, with appropriate proportioning of absorbant material to source energy power and welding heat needed, the process can be made self-stopping.
(FR)
L'invention concerne un procédé de soudage et de scellement entre eux des bords de deux feuilles de verre juxtaposées (12, 14) pour sceller un espace sous vide entre ces dernières, qui consiste à positionner un matériau absorbant les rayonnements (110) tel que FeO, VO2, ou NiO entre les feuilles de verre transmettant les rayonnements, à proximité des bords, et à irradier le matériau absorbant, de préférence avec un faisceau laser à travers au moins une des feuilles de verre (12, 14). La chaleur produite par le rayonnement absorbé dans le matériau absorbant fait fondre le verre dans les parties des deux feuilles (12, 14) situées à proximité du matériau absorbant, et le verre fondu des deux feuilles s'écoule pour créer la soudure (216) lorsqu'il refroidit et durcit. Le matériau absorbant peut être dissous et diffusé dans le verre en fusion dans la mesure où il n'absorbe plus suffisamment d'énergie pour maintenir le verre en fusion. Ainsi, le processus peut s'arrêter automatiquement grâce à l'utilisation de proportions appropriées du matériau absorbant par rapport à la puissance énergétique d'alimentation et à la chaleur de soudage nécessaires.
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