WO2000041979A1 - Panneau de verre - Google Patents

Panneau de verre Download PDF

Info

Publication number
WO2000041979A1
WO2000041979A1 PCT/JP2000/000141 JP0000141W WO0041979A1 WO 2000041979 A1 WO2000041979 A1 WO 2000041979A1 JP 0000141 W JP0000141 W JP 0000141W WO 0041979 A1 WO0041979 A1 WO 0041979A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
tube
sheet
thermal expansion
glass tube
Prior art date
Application number
PCT/JP2000/000141
Other languages
English (en)
Japanese (ja)
Inventor
Tetsuro Kawahara
Masao Misonou
Takahiro Sonoda
Takahiro Asai
Original Assignee
Nippon Sheet Glass Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Sheet Glass Co., Ltd. filed Critical Nippon Sheet Glass Co., Ltd.
Publication of WO2000041979A1 publication Critical patent/WO2000041979A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window 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
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E06B3/66304—Discrete spacing elements, e.g. for evacuated glazing units
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window 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
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • E06B3/6775—Evacuating or filling the gap during assembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/249—Glazing, e.g. vacuum glazing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/22—Glazing, e.g. vaccum glazing

Definitions

  • a pair of plate glasses are arranged at intervals in the thickness direction, and a vacuum portion between the two plate glasses is reduced and hermetically sealed through a suction portion formed on one of the pair of plate glasses.
  • a through-hole is provided in the one glass plate, a suction glass tube is erected in the through-hole, and a base end portion of the glass tube and the through-hole are provided.
  • the present invention relates to a glass panel provided with a low-melting-point glass seal portion over the periphery of a hole, and a closed portion in which the front end of the glass tube is heated and melted and closed.
  • a plurality of spacers are arranged between a pair of glass sheets, and the outer circumference of each of the glass sheets is, for example, a low It has been considered that a sealing panel made of a melting point glass is integrally provided, and the gap is made to be in a reduced pressure state, whereby a thinner glass panel having a small heat transmission coefficient is obtained.
  • a low-melting glass is applied around the glass tube in a state where a glass tube is erected in the through-hole formed in one of the glass plates.
  • the tip of the tube 7 is heated and melted at a temperature equal to or higher than the softening point of the glass tube 7 to close the tube.
  • the glass tube 7 is designed to minimize the amount of protrusion from the glass plate surface so as not to impair the aesthetics and handleability of the glass panel. Therefore, when the glass tube 7 is heated, there is a high risk of heat acting on the seal portion S.
  • the plate 10 is arranged to heat the tip of the glass tube 7.
  • the glass tube for suction, the low melting glass, and the thermal expansion coefficient of the one plate glass are set to the same value.
  • the heat transfer accompanying the heating and melting of the glass tube tip portion is transmitted from the glass tube to the seal portion.
  • there is a temperature gradient between the glass tube and the sealing portion and the temperature of the glass tube is higher than that of the sealing portion.
  • the coefficient of thermal expansion of the glass tube and the seal portion is set to the same value, the amount of expansion of the high-temperature glass tube is larger than that of the low-temperature seal portion. As a result, the seal restrains the expansion of the glass tube and consequently tightens.
  • an object of the present invention is to solve the above problems, to prevent the sealing effect of the sealing portion from being reduced due to the heating and closing of the glass tube, and to maintain the reduced pressure state of the void portion for a long period of time. Is to provide easy glass panels. Disclosure of the invention
  • a pair of plate glasses 1 are arranged at intervals in the thickness direction, and as shown in FIG.
  • a glass panel main body P1 is provided through which a vacuum V between the two glass sheets 1 is sealed under reduced pressure through a suction part 6 formed in one of the glass sheets 1A.
  • a through-hole 1a is provided in the one plate glass 1A, a suction glass tube 7 is erected in the through-hole 1a, and extends to a base end of the glass tube 7 and a peripheral portion of the through-hole 1a.
  • the thermal expansion coefficient of the low melting point glass constituting the sealing portion S The thermal expansion of the glass tube 7 It is set to be larger than the tension coefficient.
  • the coefficient of thermal expansion of the low-melting glass constituting the seal portion is set to be larger than the coefficient of thermal expansion of the glass tube, the heat sealing of the glass tube can be prevented. Accordingly, even if the temperature of the glass tube is higher than that of the seal portion, the thermal expansion of the seal portion is close to (or larger than) the thermal expansion amount of the glass tube. The difference in the amount of expansion is reduced, and it becomes easier to prevent the occurrence of cracks in the glass tube as in the past.
  • the thermal expansion coefficient of the low melting point glass constituting the seal portion S is set to the one plate glass 1A. Is set to be larger than the coefficient of thermal expansion of.
  • the low-melting glass forming the seal portion has a thermal expansion coefficient of: Since the thermal expansion coefficient is set to be larger than that of the one glass sheet, the heat shrinkage of the seal part is larger than that of the sheet glass as the environmental temperature decreases from the state where the low melting point glass is sintered to form the seal part. In normal temperature condition, A prestress has been awarded between them. Specifically, a tensile force acts on the seal portion, and a compressive force acts on the sheet glass. Then, as the glass panel is exposed to sunlight, the temperature of both the sealing portion and the sheet glass increases, and the glass portion expands, and the prestress is canceled out.
  • the stress value between the two at this time is a value obtained by subtracting the value corresponding to the prestress, and as a result, the absolute value of the stress value can be reduced.
  • the coefficient of thermal expansion between the seal part and the sheet glass becomes the same.
  • the glass panel of the present invention see FIG. 5 (b)
  • the value L 0 of the prestress and the value L 1 obtained by subtracting the value L 0 of the prestress from the total amount L of the stress become the absolute value of the stress value, and the stress value acting between the seal portion and the sheet glass. Can be reduced.
  • the effects of the present invention are not limited to those capable of exerting an effect on environmental changes due to sunlight as described above. This can be achieved even under circumstances where windows are used.
  • FIG. 1 is a partially cutaway perspective view showing a glass panel according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing a main part of the glass panel according to the present invention
  • FIG. 3 is a cross-sectional view showing a main part of the glass panel according to the present invention
  • FIG. 4 is a cross-sectional view showing a main part of the glass panel according to the present invention
  • FIG. 5 is a conceptual diagram showing a stress state of the seal portion.
  • FIGS. 1 to 4 show one embodiment of a glass panel of the present invention.
  • a glass panel P is formed by a plurality of sensors spaced apart along a plate surface between a pair of plate glasses 1.
  • the gap V between the two glass sheets 1A and 1B is reduced and hermetically sealed with respect to the glass panel main body P1 formed with the interposition 2 therebetween.
  • the pair of glass sheets 1 are each composed of a transparent float glass sheet having a thickness of 3 mm (3 mm glass sheet according to the JIS standard, and substantially 2.7 to 3.3 mm in consideration of thickness error).
  • a sealing portion 4 made of low-melting glass (for example, solder glass) is provided around the entire outer edge of both glass sheets 1 to seal the gap V. Then, the voids V are are constituted in a state which develops a reduced pressure environment (1. 0 X 1 0- 2 T orr less) by the method of sucking the suction ⁇ 6 formed on one of the glass sheets 1 A.
  • the outer peripheral edges of the two glass sheets 1 are arranged so that one of the glass sheets 1A protrudes along the sheet surface direction.
  • the sealing member for example, the low melting point glass
  • the outer peripheral portion of the gap V can be efficiently and reliably sealed.
  • the spacer 2 is made of Inconel 718 and is formed in a cylindrical shape, and has a diameter of 0.30 to: L. 00 mm and a height of 0.1 to 0.5 mm. Is set to. And, by forming the portion in contact with the sheet glass in a circular shape, a corner portion where stress concentration is apt to occur at the contact portion with both the glass sheets 1 is not made, so that the sheet glass 1 is hardly broken. Can be.
  • the installation interval of the spacer 2 is set to a dimension of 10 to 25 mm.
  • Either one of the pair of plate glasses 1 A is provided with a suction unit 6 for reducing the pressure in the gap V.
  • a glass tube 7 is disposed in the through-hole 1a formed in the one plate glass 1A, and a low melting glass is provided between the peripheral wall of the through-hole 1a and the glass tube 7. It is hermetically connected by 8.
  • the distal end portion 7a of the glass tube 7 is configured as a closed portion H which is heated and melted and closed after decompression.
  • a low-melting glass 8 is applied around the through-hole 1a so as to cover the glass tube 7 and one of the glass sheets 1A (see FIG. 2), and the environmental temperature is set to 500 °.
  • the low-melting glass 8 is sintered to form a seal portion S.
  • the sealing portion 4 on the outer periphery of the plate glass is also sealed by sintering the applied low melting glass under the same environment.
  • the gas in the gap V is sucked from the glass tube 7 to a sufficiently reduced pressure state, and then the distal end portion 7a of the glass tube 7 is heated and melted to form the closed portion. H is formed.
  • the distal end portion 7a is locally heated (about 1000 ° C.), but is melted by the heat rays directly hitting the sintered seal portion S. In order to prevent this, as shown in FIG. 3, the process is performed in a state where the heat shield plate 10 is arranged so as to cover the seal portion S.
  • a protective cap 9 is adhered to the one plate glass 1A so as to cover the suction part 6 (see FIG. 1).
  • the glass tube 7 preferably has a thickness of 0.1 to 1.0 mm.
  • the thickness exceeds 1.0 mm, it takes time from the rise in temperature to self-fusion when the tip 7a is closed, and the temperature rises to the surrounding unnecessary parts. In severe cases, there is a risk of cracks in the sheet glass 1 or the low-melting glass 8 due to the resulting temperature gradient. If the thickness is less than 0.1 mm, the temperature can be easily raised, but it is difficult to maintain the shape by self-melting, and the strength is weak, so that it is extremely susceptible to breakage.
  • the outer diameter of the glass tube 7 is set to 1 to 10 mm and the height is set to 6 mm or less. is there.
  • One plate glass 1 A respective thermal expansion coefficients of the glass tube 7 'seal portion S of the embodiment, 9 2 X 1 0- 7 Z ° C ( glass tube 7), 9 6 X10 to 7 / ° C (low melting point glass of the seal portion S), and 86 ⁇ 10 ” 7 / ° C (one glass plate 1A).
  • the distal end side of the glass tube 7 expands and expands, whereas the seal portion S in contact with the glass tube 7 has a low temperature.
  • the coefficient of thermal expansion is larger than that of the glass tube 7, it is easy to spread like the glass tube 7, so that a large clamping force can be prevented from acting on the glass tube 7, and cracks occur in the glass tube 7 and the seal S.
  • the sealing effect is reduced due to this, it is possible to prevent accidental attack.
  • the glass panel P has a state in which the sealing portion S is contracted from the plate glass 1A in a normal temperature state.
  • the temperature of the seal portion S expands due to the temperature rise of 1 A and the seal portion S, since the thermal expansion of the seal portion S is larger than 1 A of the sheet glass, the stress acting between them is canceled. It reverses, and as a result, the absolute value of the stress acting between them can be reduced. Therefore, it is possible to improve the durability of the seal portion S against temperature changes that are repeated daily (see FIG. 5).
  • the glass panel of the present embodiment it is possible to easily maintain the sealing effect around the glass tube 7 for a long time, and it is possible to expect a heat insulating effect for many years by maintaining the reduced pressure environment of the void. Become.
  • the sheet glass is not limited to the sheet glass having a thickness of 3 mm described in the above embodiment, and may be a sheet glass having another thickness.
  • the type of glass can be arbitrarily selected, for example, template glass, ground glass (glass with a function of diffusing light by surface treatment), netted glass or reinforced glass, heat ray absorption, ultraviolet ray absorption. It may be a sheet glass provided with a function such as heat ray reflection, or a combination thereof.
  • the composition of the glass may be soda silicate glass (soda lime silica glass), borosilicate glass, aluminosilicate glass, or various crystallized glasses.
  • the glass sheet is not limited to the one glass sheet and the other glass sheet having different lengths and widths, and is not limited to those having the same size. You may.
  • the two glass sheets may be overlapped so that the edges are aligned.
  • a glass panel may be configured by combining one plate glass and the other plate glass having different thickness dimensions.
  • the spacing member is not limited to the spacer made of Inconel 718 described in the above embodiment.
  • stainless steel or other metal or quartz glass may be used. 'Ceramics or the like may be used. In short, any material may be used as long as it is hardly deformed so that both glass sheets do not come into contact with each other under external force.
  • the thermal expansion coefficient of 1 A is not limited to the value described in the previous embodiment, and may be a value that is larger or smaller. In short, the thermal expansion coefficient of the low melting point glass of the seal portion S is It suffices if the thermal expansion coefficient is set to be larger than the glass tube 7.
  • the thermal expansion coefficient of the low melting point glass is set to be larger than that of one of the sheet glasses 1A.
  • the coefficient of thermal expansion refers to the average coefficient of thermal expansion in the temperature range from room temperature to the yield point of low-melting glass (low-melting glass used for the sealing part) for all of the seal, glass tube, and one of the glass sheets.
  • the sealing portion S itself uses low melting point glass having a different thermal expansion coefficient between a portion corresponding to the glass tube 7 and a portion corresponding to the one plate glass 1A
  • the glass is used.
  • the relationship between the respective thermal expansion coefficients of the tube 7 and the sealing portion corresponding to the glass tube 7 may satisfy the relationship described in claim 1.
  • the relationship of each thermal expansion coefficient between one sheet glass 1A and the corresponding sealing portion may also satisfy the relationship described in claim 2.
  • the glass panel of the present invention can be used for a wide variety of applications, for example, for construction and vehicles (automobile window glass, railway vehicle window glass, ship window glass), and for equipment elements (plasma display). Surface glass, refrigerator doors and walls, and heat insulation doors and walls).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

L'invention concerne un panneau de verre comprenant un corps (P1) constitué d'une paire de plaques de verre plat (1) disposées avec un certain intervalle entre elles dans le sens de l'épaisseur, un orifice (6) d'aspiration formé sur l'une des plaques (1A) de la paire de plaques de verre plat (1), et un espace (V), ménagé entre la paire de plaques (1), dans lequel on fait le vide via l'orifice (69 d'aspiration. L'orifice (6) d'aspiration est formé par découpe d'un trou traversant (1a) dans la plaque (1A), par montage d'un tube (7) d'aspiration en verre sur le trou (1a), par recouvrement de l'extrémité de base du tube (7) et de son bord périphérique au niveau de l'une des plaques (1A) par un joint (S) en verre à faible point de fusion, et par constitution d'une partie fermée (H) formée par fermeture de l'extrémité du tube (7) par chauffage et fusion. Le verre à faible point de fusion constituant le joint (S) est caractérisé par un coefficient d'expansion thermique supérieur à celui du tube (7) de verre.
PCT/JP2000/000141 1999-01-18 2000-01-13 Panneau de verre WO2000041979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/9021 1999-01-18
JP11009021A JP2000203891A (ja) 1999-01-18 1999-01-18 ガラスパネル

Publications (1)

Publication Number Publication Date
WO2000041979A1 true WO2000041979A1 (fr) 2000-07-20

Family

ID=11709014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/000141 WO2000041979A1 (fr) 1999-01-18 2000-01-13 Panneau de verre

Country Status (2)

Country Link
JP (1) JP2000203891A (fr)
WO (1) WO2000041979A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205776A1 (de) 1982-02-18 1983-08-25 Truetzschler & Co Vorrichtung zur regulierung der einer textilmaschine zuzufuehrenden fasermenge
WO2002029085A2 (fr) * 2000-10-03 2002-04-11 Id+Plus Ltd Methode de detection
WO2003055819A1 (fr) * 2001-12-25 2003-07-10 Nippon Sheet Glass Co., Ltd. Double vitrage
WO2004048286A1 (fr) * 2002-11-22 2004-06-10 Nippon Sheet Glass Co., Ltd. Dispositif d'ecran thermique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002878A1 (fr) * 1989-08-23 1991-03-07 The University Of Sydney Vitrage thermo-isolant et procede de fabrication associe
WO1997048650A1 (fr) * 1996-06-17 1997-12-24 Nippon Sheet Glass Co., Ltd. Double vitrage a vide d'air et procede de fabrication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002878A1 (fr) * 1989-08-23 1991-03-07 The University Of Sydney Vitrage thermo-isolant et procede de fabrication associe
WO1997048650A1 (fr) * 1996-06-17 1997-12-24 Nippon Sheet Glass Co., Ltd. Double vitrage a vide d'air et procede de fabrication

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205776A1 (de) 1982-02-18 1983-08-25 Truetzschler & Co Vorrichtung zur regulierung der einer textilmaschine zuzufuehrenden fasermenge
WO2002029085A2 (fr) * 2000-10-03 2002-04-11 Id+Plus Ltd Methode de detection
WO2002029085A3 (fr) * 2000-10-03 2004-06-24 Id & Plus Ltd Methode de detection
WO2003055819A1 (fr) * 2001-12-25 2003-07-10 Nippon Sheet Glass Co., Ltd. Double vitrage
US7045181B2 (en) 2001-12-25 2006-05-16 Nippon Sheet Glass Co., Ltd. Double glazing
WO2004048286A1 (fr) * 2002-11-22 2004-06-10 Nippon Sheet Glass Co., Ltd. Dispositif d'ecran thermique

Also Published As

Publication number Publication date
JP2000203891A (ja) 2000-07-25

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