WO2016158241A1 - Double glazing and method for manufacturing double glazing - Google Patents

Abstract

Provided is a double glazing which comprises: a first glass plate; a second glass plate opposing the first glass plate; a frame-shaped spacer which forms a space between the first glass plate and the second glass plate; and a vent pipe for opening the space surrounded by the spacer to the atmosphere. The spacer includes a desiccating agent and resin, and the vent pipe passes through the spacer.

Description

Multi-layer glass and method for producing multi-layer glass

The present invention relates to a multilayer glass and a method for producing the multilayer glass.

The multi-layer glass includes a first glass plate, a second glass plate facing the first glass plate, and a frame-shaped spacer that forms a space between the first glass plate and the second glass plate (for example, Patent Document 1). A vent pipe for opening the space to the atmosphere is attached to the spacer.

Japanese Unexamined Patent Publication No. 11-92180

The conventional spacer is made of metal, and the hole machining of the spacer is troublesome, and the workability of attaching the air pipe to the spacer is poor.

The present invention has been made in view of the above problems, and has as its main object the provision of a double-glazed glass with improved workability of attaching a ventilation pipe to a spacer.

In order to solve the above problems, according to one aspect of the present invention,
A first glass plate;
A second glass plate facing the first glass plate;
A frame-like spacer that forms a space between the first glass plate and the second glass plate;
A vent pipe for opening the space surrounded by the spacer to the atmosphere;
The spacer includes a desiccant and a resin, and the vent pipe penetrates the spacer.

According to one aspect of the present invention, there is provided a double-glazed glass having improved workability of attaching a ventilation pipe to a spacer.

It is sectional drawing which shows the multilayer glass by one Embodiment. It is a perspective view which shows the attachment state with respect to the spacer of the ventilation pipe by one Embodiment. It is a flowchart which shows the manufacturing method of the multilayer glass by one Embodiment. It is sectional drawing which shows the bonding process of FIG. It is sectional drawing which shows the bonding process of FIG. 3 following FIG. It is sectional drawing which shows the attachment process of FIG. It is sectional drawing which shows the multilayer glass by a modification.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and description thereof is omitted.

FIG. 1 is a cross-sectional view showing a multilayer glass according to an embodiment of the present invention. In FIG. 1, the left side is the outdoor side, and the right side is the indoor side. FIG. 2 is a perspective view showing an attachment state of the air pipe to the spacer according to the embodiment.

The multi-layer glass 10 is attached to a frame 20 such as a window frame, and allows outdoor light such as sunlight to pass through the room. The window may be, for example, a building window or a vehicle window.

The multilayer glass 10 has a frame shape that forms a space SP between the first glass plate 11, the second glass plate 12 facing the first glass plate 11, and the first glass plate 11 and the second glass plate 12. Spacer 13.

The first glass plate 11 is untempered glass or tempered glass. The tempered glass may be either heat tempered glass or chemically tempered glass.

The second glass plate 12 faces the first glass plate 11 and is disposed, for example, on the indoor side of the first glass plate 11. Similar to the first glass plate 11, the second glass plate 12 is untempered glass or tempered glass.

In addition, although the 2nd glass plate 12 of this embodiment is arrange | positioned by the indoor side of the 1st glass plate 11, you may arrange | position by the outdoor side of the 1st glass plate 11. FIG.

The spacer 13 is formed in a frame shape and surrounds the space SP. The space SP forms a heat insulating layer.

The multi-layer glass 10 may be of an on-site construction type using an existing glass plate attached to the frame 20 as a part of the multi-layer glass. If it is an on-site construction type that uses an existing glass plate as a part of the double-glazed glass, it is possible to reduce construction costs and construction periods. In addition, existing glass plates and existing frames can be reused as they are, and resource waste can be reduced.

For example, the first glass plate 11 is an existing glass plate, and is fixed to the inside of a fixing groove 21 formed on the inner periphery of the frame 20 by a fixing member 22 or the like. On the other hand, the second glass plate 12 is a new glass plate, which is smaller than the existing glass plate, is disposed outside the fixed groove 21, and is not fixed inside the fixed groove 21. The spacer 13 is formed in a frame shape inside the frame 20.

The multilayer glass 10 of the present embodiment uses the first glass plate 11 attached to the frame 20 as a part of the multilayer glass, and a part of the glass is attached to the frame in advance. It may be attached to the frame after the production of the layer glass. In the latter case, both the first glass plate and the second glass plate may be fixed inside the fixing groove of the frame. In the latter case, the outer shape of the first glass plate and the outer shape of the second glass plate may be the same size.

In addition to the first glass plate 11, the second glass plate 12, and the spacer 13, the multilayer glass 10 includes, for example, a primary seal 14, a secondary seal 15, a Low-E (Low シ ー ル Emissivity) film 17, a vent pipe 18, and It has a closing member 19.

The primary seal 14 is disposed between the first glass plate 11 and the spacer 13, and seals between them and bonds them together. Further, the primary seal 14 is disposed between the spacer 13 and the second glass plate 12, and seals between them and bonds them therebetween.

The secondary seal 15 is disposed so as to surround the spacer 13, and seals between the first glass plate 11 and the second glass plate 12 and adheres between them. The spacer 13 is formed smaller than the first glass plate 11 and the second glass plate 12 so that the secondary seal 15 can bond the first glass plate 11 and the second glass plate 12.

The Low-E film 17 restricts the passage of heat by suppressing radiant heat transfer. The Low-E film 17 is formed, for example, on the surface of the second glass plate 12 as a new glass plate facing the first glass plate 11.

Note that, as described above, the multilayer glass 10 may be attached to the frame after its manufacture. Therefore, the Low-E film 17 may be formed on any of the facing surfaces of the indoor side glass plate and the outdoor side glass plate facing each other, or may be formed on both facing surfaces. .

The Low-E film 17 may be a general film, for example, a laminated film including a transparent dielectric film, an infrared reflective film, and a transparent dielectric film in this order. Typical examples of the transparent dielectric film include metal oxides and metal nitrides. Typical metal oxides include zinc oxide and tin oxide. A typical example of the infrared reflecting film is a metal film. A typical metal film is silver (Ag). Here, one or more infrared reflective films may be formed between the transparent dielectric films.

The Low-E film 17 may be accommodated in the space SP and may not protrude from the space SP. Since the space SP is isolated from the atmosphere, contact between moisture in the atmosphere and the Low-E film 17 can be prevented, and deterioration of the Low-E film 17 can be limited.

Note that the Low-E film 17 of this embodiment does not protrude from the space SP, but may protrude as shown in FIG. For example, the Low-E film 17 may be formed on the entire surface of the second glass plate 12 facing the first glass plate 11 or may not be trimmed. Further, the Low-E film 17 may be formed of a material not containing silver in order to suppress deterioration due to moisture in the atmosphere.

The vent pipe 18 opens the space SP surrounded by the spacer 13 to the atmosphere. The vent pipe 18 passes through the spacer 13. One end of the vent pipe 18 is disposed inside the spacer 13, and the other end of the vent pipe 18 is disposed outside the spacer 13. The ventilation tube 18 may be any of a metal tube, a ceramic tube, a glass tube, and the like. When a pressure difference is generated between the space SP and the atmosphere, the air can move in the ventilation pipe 18 due to the pressure difference, and the pressure difference can be reduced. Therefore, distortion of the multilayer glass 10 due to a pressure difference can be reduced, and distortion of an image viewed through the multilayer glass 10 can be reduced. The atmospheric pressure difference can be caused by changes in atmospheric pressure, changes in temperature, and the like. The number of the vent pipes 18 is one in FIG. 1, but may be a plurality.

The vent pipe 18 has an inner diameter and a length that can restrict the movement of air by the resistance in the pipe when there is no pressure difference between the space SP and the atmosphere. The amount of air movement between the space SP and the atmosphere can be minimized, and the penetration of moisture in the atmosphere into the space SP can be limited. The inner diameter of the vent pipe 18 is 0.4 to 0.6 mm, for example. The length of the vent pipe 18 is, for example, 150 to 500 mm.

The vent pipe 18 may have bent portions 18a and 18b as shown in FIG. 2 for the purpose of further restricting the movement of air when there is no pressure difference between the space SP and the atmosphere. For example, the vent pipe 18 includes a first vertical portion 18-1 perpendicular to the outer peripheral surface of the spacer 13, a parallel portion 18-2 parallel to the outer peripheral surface of the spacer 13, and the main surface of the second glass plate 12. And a second vertical portion 18-3 perpendicular to the first vertical portion 18-3. The first vertical portion 18-1, the parallel portion 18-2, and the second vertical portion 18-3 are perpendicular to each other. The first vertical portion 18-1 penetrates the spacer 13, the parallel portion 18-2 is embedded in the secondary seal 15, and the second vertical portion 18-3 protrudes from the secondary seal 15 to the outdoor side.

The spacer 13 is an extruded product of resin mixed with a desiccant. The desiccant dries the space SP and prevents condensation in the space SP.

The spacer 13 includes a resin. Since the resin is softer than the metal, the spacer 13 can be easily perforated. Therefore, the work efficiency of attaching the ventilation pipe 18 to the spacer 13 can be improved. In addition, since the resin has a lower thermal conductivity than metal, the indoor cooling efficiency is good in summer and the indoor heating efficiency is good in winter.

The method of attaching the vent pipe 18 to the spacer 13 may be either a method of inserting the vent pipe 18 into the spacer 13 or a method of inserting the vent pipe 18 into a through hole formed in the spacer 13 in advance. The former method is more preferable from the viewpoint of shortening the operation because the through hole is not formed in the spacer 13 in advance. In the former case, the vent pipe 18 may be formed in a sharp shape.

The resin of the spacer 13 may include a foamed resin. Holes can be made in the spacer more easily, and the thermal conductivity can be further reduced. Examples of the foamed resin include foamed silicone, foamed polyethylene, and foamed vinyl chloride.

In addition to the foamed resin, for example, polyisobutylene is also preferable. Polyisobutylene can easily make a hole in the spacer 13.

The spacer 13 may include a foam layer 13a containing a desiccant and a foam resin, and a moisture-proof layer 13b that suppresses intrusion of moisture in the atmosphere into the space SP.

The moisture-proof layer 13b is made of, for example, a metal tape. The thickness of the metal tape is set such that the ventilation pipe 18 can be pierced through the metal tape.

The moisture-proof layer 13b may be disposed outside the foam layer 13a (on the side opposite to the space SP with respect to the foam layer 13a). The moisture absorption of the desiccant contained in the foam layer 13a can be suppressed.

In addition, the moisture-proof layer 13b may be arrange | positioned inside the spacer 13, and another layer may be arrange | positioned on the outer side of the moisture-proof layer 13b.

The closing member 19 closes the gap between the spacer 13 and the vent pipe 18 and restricts moisture in the atmosphere from entering the space SP through the gap. For example, the closing member 19 is in close contact with both the outer peripheral surface of the spacer 13 and the outer peripheral surface of the vent pipe 18. As the closing member 19, for example, a clay resin, a metal tape, or the like is used.

FIG. 3 is a flowchart showing a method for producing a multilayer glass according to an embodiment of the present invention. FIG. 4 is a cross-sectional view showing the bonding step of FIG. FIG. 5 is a cross-sectional view showing the bonding step of FIG. 3 following FIG. FIG. 6 is a cross-sectional view showing the attaching step of FIG.

As shown in FIG. 3, the manufacturing method of a multilayer glass has bonding process S11, attachment process S12, and sealing process S13.

In bonding process S11, as shown in FIG.4 and FIG.5, the 1st glass plate 11 and the 2nd glass plate 12 are bonded together via the frame-shaped spacer 13, and the 1st glass plate 11 and the 2nd glass plate. 12 to form a space SP.

For example, in the bonding step S <b> 11, a new second glass plate 12 is bonded to the existing first glass plate 11 attached to the frame 20 via the frame-shaped spacer 13.

On the surface of the second glass plate 12 facing the first glass plate 11, a Low-E film 17 is formed in advance at the factory. The Low-E film 17 is protected from moisture in the atmosphere by a protective member, and the protective member is peeled off at the existing site of the first glass plate 11.

The second glass plate 12 and the spacer 13 may be separately transported to the site, or may be transported to the site in an assembled state. In the former case, each packing size is small compared to the latter case, and transportation is easy.

The spacer 13 contains a resin and has flexibility. Therefore, when the spacer 13 is transported to the site separately from the second glass plate 12, it can be rolled and transported. Therefore, the packing size is further reduced and transportation is easier.

Since the spacer 13 contains resin, it can be bent. By fixing the spacer 13 to the first glass plate 11 while bending the spacer 13 and connecting both ends of the spacer 13, the spacer 13 can be formed in a frame shape. It is also possible to form a frame by connecting a plurality of linear spacers 13.

Since the spacer 13 includes a desiccant, the spacer 13 may be rolled and housed in a can. The size of the can can be reduced, and it is easy to ensure the airtightness of the can.

As shown in FIGS. 4 and 5, after the spacer 13 is fixed to the first glass plate 11, the second glass plate 12 is fixed to the spacer 13. At this time, in order to form a gap between the second glass plate 12 and the frame 20, the setting block 30 may be attached to the lower portion of the frame 20 in advance. The setting block 30 supports the second glass plate 12 from below, thereby forming a gap between the second glass plate 12 and the frame 20.

In this embodiment, the second glass plate 12 is fixed to the spacer 13 after the spacer 13 is fixed to the first glass plate 11, but the order may be reversed. That is, after the spacer 13 is fixed to the second glass plate 12, the first glass plate 11 may be fixed to the spacer 13.

In the attachment step S12, the ventilation pipe 18 is attached to the spacer 13 as shown in FIG. The spacer 13 includes a desiccant and a resin. Since the resin is softer than the metal, the spacer 13 can be easily perforated. Therefore, the work efficiency of attaching the ventilation pipe 18 to the spacer 13 can be improved. In addition, since the resin has a lower thermal conductivity than metal, the indoor cooling efficiency is good in summer and the indoor heating efficiency is good in winter.

In addition, although attachment process S12 shown in FIG. 3 is performed after bonding process S11, you may be performed before bonding process S11 or in the middle of bonding process S11. For example, the attaching step S12 may be performed before the spacer 13 is fixed to the first glass plate 11, or after the spacer 13 is fixed to the first glass plate 11, the second glass plate 12 is fixed to the spacer 13. It may be done before

In the attachment step S12, the gap between the spacer 13 and the vent pipe 18 may be closed with a closing member 19 as shown in FIG. The blocking member 19 restricts moisture in the atmosphere from entering the space SP through the gap. For example, the closing member 19 is in close contact with both the outer peripheral surface of the spacer 13 and the outer peripheral surface of the vent pipe 18. As the closing member 19, for example, a clay resin, a metal tape, or the like is used.

In the sealing step S13, the material of the secondary seal 15 is poured into the gap between the frame 20 and the second glass plate 12, and the material is solidified. The ventilation pipe 18 penetrates the secondary seal 15 and opens the space SP to the atmosphere. Thereby, the multilayer glass 10 shown in FIG. 1 is obtained.

As mentioned above, although embodiment of the multilayer glass etc. was demonstrated, this invention is not limited to the said embodiment etc., Various deformation | transformation and improvement are possible within the range of the summary of this invention described in the claim. It is.

This application claims priority based on Japanese Patent Application No. 2015-075166 filed with the Japan Patent Office on April 1, 2015. The entire contents of Japanese Patent Application No. 2015-075166 are incorporated herein by reference. To do.

DESCRIPTION OF SYMBOLS 10 Multi-layer glass 11 1st glass plate 12 2nd glass plate 13 Spacer 13a Foam layer 13b Moisture-proof layer 14 Primary seal 15 Secondary seal 17 Low-E film 18 Vent pipe 19 Closure member 20 Frame 21 Fixing groove 30 Setting block SP space

Claims (10)

1. A first glass plate;
   A second glass plate facing the first glass plate;
   A frame-like spacer that forms a space between the first glass plate and the second glass plate;
   A vent pipe for opening the space surrounded by the spacer to the atmosphere;
   The spacer includes a desiccant and a resin, and the vent pipe penetrates the spacer.
2. The multilayer glass according to claim 1, wherein the resin includes a foamed resin.
3. The multi-layer glass according to claim 2, wherein the spacer includes a foam layer containing the desiccant and the foam resin, and a moisture-proof layer that suppresses intrusion of moisture in the atmosphere into the space.
4. The multilayer glass according to any one of claims 1 to 3, further comprising a closing member that closes a gap between the spacer and the vent pipe.
5. The first glass plate has an end fixed inside a fixing groove formed on the inner periphery of the frame,
   The multi-layer glass according to any one of claims 1 to 4, wherein the second glass plate is disposed outside the fixing groove.
6. A bonding step of bonding the first glass plate and the second glass plate through a frame-shaped spacer, and forming a space between the first glass plate and the second glass plate,
   An attachment step of attaching a ventilation pipe for opening the space surrounded by the spacer to the atmosphere to the spacer;
   The said spacer contains a desiccant and resin, The said ventilation pipe penetrates the said spacer, The manufacturing method of double-glazed glass.
7. The method for producing a multilayer glass according to claim 6, wherein the resin includes a foamed resin.
8. The method for producing a multi-layer glass according to claim 7, wherein the spacer includes a foam layer containing the desiccant and the foam resin, and a moisture-proof layer that suppresses moisture in the atmosphere from entering the space.
9. The method for producing a multilayer glass according to any one of claims 6 to 8, wherein, in the attaching step, a gap between the spacer and the vent pipe is closed with a closing member.
10. 10. In the bonding step, the new second glass plate is bonded to the existing first glass plate attached to the frame via the frame-shaped spacer. The manufacturing method of the multilayer glass as described in 2.

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