JPH039058B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of the Invention The present invention relates to a see-through structure in which a multi-layer transparent plate, in which a space is filled with an insulating gas having a higher specific gravity than air, is arranged in an opening in a wall, and , relates to a transparent structure applied to doors and windows of refrigerators, low-temperature display cases, etc.

(B) Background Art A multilayer transparent plate is constructed by airtightly joining at least two transparent plates with a predetermined distance between them and a frame member interposed between the peripheral edges of the transparent plates, and is heat insulating. Due to its good properties and low condensation, its uses are rapidly expanding.

In addition, for the purpose of increasing the heat insulation properties of the multilayer transparent plate or increasing the sound insulation properties, it is possible to fill the internal space with a heat insulating gas such as a gas with a lower thermal conductivity than air or a gas with a higher specific gravity than air. Layered transparent plates are now on sale.

Examples of the background art multilayer transparent plate and its manufacturing method will be described below based on FIGS. 1 to 7. Reference numeral 1 in FIGS. , a multi-layer transparent plate used for windows and doors of general houses, which is interposed between two transparent plates 2A and 2B made of rectangular glass and the circumferential end surfaces of the opposing surfaces of both transparent plates, Four spacers 4A, 4B, 4C connected in a frame shape,
A space 5 is formed in which a heat insulating gas G such as Ar or SF ₆ , which has a higher specific gravity than air, is sealed inside the space surrounded by both the transparent plates and the frame member. . 6A and 6B are adhesives such as double-sided adhesive tapes for mutually bonding both the transparent plates 2A and 2B and the frame member 3, and 7 is an annular adhesive formed by the peripheral end surfaces of the two transparent plates and the outer surface of the frame member. A sealing member made of a resin such as thiocol is filled in the groove and adhered to each surface to keep the space airtight.
Numeral 8 is a granular desiccant filled in a large amount in each of the spacers, and is made of a mixture of, for example, quick-drying silica gel that absorbs moisture quickly and morikiura sieves that dry slowly and has a slow moisture-absorbing effect.

Each of the spacers is formed into a rectangular cylindrical shape having a hollow part 9 as shown in FIG. 3 by extrusion molding of aluminum or the like or by bending a thin metal plate. A ventilation path 10 consisting of an elongated groove communicating between each hollow portion 9 and the space 5 is formed respectively, and two spacers 4 are formed.
Circular openings 11A and 11B are formed at one end of both the inner and outer surfaces of A and 4C to correspond to through holes of a connecting tool, which will be described later. 12A, 12B, 12C, and 12D are corner connectors made of synthetic resin and have two legs 12l and 12m that intersect at approximately right angles. The frame member 3 is assembled by connecting the spacers to each other by inserting one leg 12l into one of the hollow portions 9 which are adjacent to each other and intersecting at right angles, and the other leg 12m into the other. As shown in FIGS. 4 and 5, the legs are formed in a shape capable of imparting elasticity such as a wave shape that is pressed and deformed within the hollow portion 9 when the spacer is connected. 13A, 13B are two connectors 12B,
The openings 11A, 1 of the spacers 4A, 4C are through holes formed in the legs 12m, 12l that are inserted into the hollow parts 9 of the same spacers 4A, 4C.
1B and leg 1 of the connectors 12B and 12D.
2m, 12l are inserted into the spacers 4A, 4C and stacked on both ends of the spacers, the openings 11A, 11
Together with B, the interiors of the spacers 4A and 4C are communicated with each other.

Next, a method for manufacturing the multilayer transparent plate 1 will be explained. First, the spacers 4A, 4C are connected using the connecting tool 12A.
After connecting the spacers 4B and 4D in an L-shape using the connector 12C, desiccant 8 is filled into the hollow part 9 of each spacer, and then the spacers 4A and 4B and the connector 12D are connected using the connector 12C. spacer 4C, 4
Connect D to assemble the frame member 3, and connect the openings 11A, 11B of the spacers 4A, 4C and the connector 12.
The through holes 13A and 13B of B and 12D are aligned to form two passages. At this time, each connector serves as a stopper to prevent the desiccant 8 from leaking from the hollow portion 9. After assembling the frame member, each spacer 4
Adhesives 6A, 6B are adhered to opposite surfaces of A, 4B, 4C, and 4D other than the inner and outer surfaces, and then this adhesive is adhered to the peripheral end surfaces of the opposing surfaces of both transparent plates 2A, 2B. The frame member 3 and both transparent plates 2A and 2B are connected to each other, and a space 5 is formed to obtain a semi-finished product. Next, the seal member 7 is arranged in an annular manner along the outer surface of the frame member 3 to close the openings 11A, 11B, and the seal member 7 is attached to each spacer, each connector 12A, 12B, 12C, 12D, and both The space 5 is kept airtight by being adhered to the transparent plates 2A and 2B. After maintaining the airtightness of the space 5 except for the two passages, the semi-finished product is erected with the spacer 4A at the top and fixed with a suitable jig. Thereafter, as shown in FIGS. 6 and 7, the supply nozzle 14, which is a long and thin tube connected to a gas supply machine (not shown), is inserted into the space 5 through one passage consisting of the opening 11B and the through hole 13B. and position the tip in the lower part of the space 5.
An exhaust nozzle 15 made of a long and thin tube that guides the air A to the outside is inserted into the space 5 through the other passage consisting of the opening 11A and the through hole 13A, and its tip is positioned in the upper part of the space 5, and the supply nozzle 14 Insulating gas G such as Ar or SF ₆ having a higher specific gravity than air is gradually supplied into the space 5 as shown by the arrow. As the insulating gas is supplied, the air A in the space 5 is pushed upward and gradually discharged to the outside from the exhaust nozzle 15 as shown by the arrow. (not shown) to stop the supply of the insulating gas G to both the supply and exhaust nozzles 1.
4 and 15 from both passages. Thereafter, the desired multilayer transparent plate 1 is sealed by sealing the openings 11A, 11B and the through holes 13A, 13B with sealing members 7', 7' of the same quality as the sealing member 7, as shown in FIGS. 1, 4, and 5. is obtained.

(c) Problem with the background art (1) In order to avoid convection of the insulating gas G during supply, a supply passage is formed in the lower part of the frame member 3; A portion of the insulating gas G leaks from the supply passage.

(2) If the airtightness provided by the sealing members 7' and 7' is even slightly poor and the multilayer transparent plate 1 is placed in the opening of the wall as a door or window with one passage located at the bottom, the airtightness will gradually deteriorate. Gas leaks and the product does not function as intended.

(d) Purpose of the Invention The object of the present invention is to prevent the leakage of the insulating gas from the passageway after the insulating gas is supplied to the space and after it is sealed.

(E) Summary of the Invention At least two transparent plates facing each other with a gap therebetween, at least one frame member interposed between peripheral edges of opposing surfaces of the transparent plates, and the transparent plates and A multilayer consisting of an adhesive that interconnects the frame members, at least one layer of space defined by the connection of the transparent plate and the frame member, and an insulating gas with a higher specific gravity than air sealed in this space. In the transparent plate, at least one passage is formed only in the upper part of the frame member for communicating the space with the outside, supplying insulating gas to the space and/or discharging air from the space to the outside, and blocking the passage. A transparent structure in which a multilayer transparent plate provided with a sealing member is arranged as a door or window in an opening of a wall body with the passageway at the top.

(F) Embodiments of the present invention Figures 8 to 15 show embodiments of the present invention,
In FIGS. 8 to 15, the same reference numerals as in FIGS. 1 to 7 are the same.

12n is each corner connector 12A, 12B, 1
The bases 12i and 12J formed between the legs 12l and 12m of 2C and 12D are abutment surfaces that are formed by refining the boundaries between the base and the legs and face the hollow part 9, and each of the corner connectors leg 12l,1
2m is inserted into the hollow portion 9 of each of the spacers 4A, 4B, 4C, and 4D, both ends of each of the spacers are brought into contact with opposing contact surfaces, and the circumferential surface of the base 12n and each of the spacers is flush with the base 12
n does not overlap each of the spacers, and its outer surface is exposed to the outside.

12h, 12h are the bases 1 of the corner connectors 12A, 12B for supplying the insulating gas G to the space 5.
A passage formed through 2n communicates the space 5 with the outside, and when the insulating gas G is supplied, one becomes a supply path for the insulating gas and the other becomes an air exhaust path.

Next, a method for manufacturing the multilayer transparent plate 1 will be explained.

Each corner connector 12A, 12B, 12C, 1
After assembling the frame member 3 by interconnecting the spacers 4A, 4B, 4C, and 4D with 2D, an adhesive 6 made of double-sided adhesive tape is applied to the entire circumference of both sides of the frame member.
A and 6B are pasted, and then, as shown in FIG. 9, the transparent plate is attached to an assembly jig 16 consisting of a rectangular substrate 17 and eight guides 18A to 18H erected on the outer peripheral surface of this substrate. 2A, frame member 3, and transparent plate 2B, press the transparent plate 2B to separate both transparent plates 2.
A, 2B and the frame member 3 are interconnected with adhesives 6A, 6B to form a space 5. Next, a resin sealing member 7 such as thiocol is filled into an annular groove formed by the inner circumferential end surfaces of both transparent plates and the outer surface of the frame member, except for the passages 12h and 12h of the frame member 3. A passageway 12 is attached to each of the surfaces.
A semi-finished product is obtained in which the space 5 is kept airtight except around h and 12h. Next, as shown in FIG. 10, a plurality of semi-finished products are erected on the frame 13 so that both passages 12h, 12h are located at the upper part of the frame member 3, and the supply nozzle 14 of the gas supply device 20 is connected to the corner connector. 12A through the passage 12h, and the tip of this supply nozzle is positioned at the lower part of the space 5 as shown in FIG. The gas supply machine includes supply nozzles 14A to 14J made of flexible thin tubes, electromagnetic valves 21A to 21J provided in the middle of the supply nozzles, and on-off valves 22A to 22A connected to the bases of each of the supply nozzles. 2
2J and the distribution tank 23 with each of these on-off valves closed.
and a first operation switch 25 that drives a first timer 24 that operates for the first gas supply time, for example, 15 minutes, and a first reset switch 2 that resets the timer 24.
6. A second operation switch 28 that drives a second timer 27 that operates for a second gas supply time of 30 minutes, for example, and a second reset switch 2 that resets the timer 27.
9. First select switches 30A to 30E that stop driving the first timer after, for example, 10 minutes, second select switches 31A to 31E that stop driving the second timer after, for example, 20 minutes, and fine adjustment (not shown). A control box 33 is equipped with a pressure gauge 32 that displays the gas pressure adjusted by the regulator 34 and a pressure gauge 3.
5, 36 are attached to the cylinder 37 through the hose 38, and the supply nozzle 14
It is supplied to each space 5 for a predetermined time through A, 14C, 14E, 14G, and 14I. In this case, the on-off valves 22B, 22D, 22F, 22H, and 22J are closed. Insulating gas G with higher specific gravity than air
As the air A in the space 5 is injected, the air A in the space 5 is gradually pushed upward, and is discharged to the outside from the passage 12h of the corner connector 12B as shown by the arrows in FIGS. 11 and 12, and is replaced by the insulating gas G. . After filling with the insulating gas G, the supply nozzle 14 is connected to the space 5 and the passage 1.
2h, and while both passages 12h, 12h are positioned at the upper part, the space is closed by closing both passages 12h, 12h with cap-shaped seal members 7', 7', which are of the same quality as the sealing member, as shown in FIG. 5
The desired multilayer transparent plate 1 is completed by filling in the insulating gas G.

As shown in FIG. 14, the multilayer transparent plate 1 becomes a transparent door 40 with a metal frame 39 fitted with a handle 39A on its peripheral edge, and the passages 12h, 12h are located at the upper part of the frame member 3. That is, it is disposed in the front opening of the refrigerator 41 so as to be openable and closable so as to be located above the insulating gas G, which has a higher specific gravity than air.

In addition, the multilayer transparent plate 1 has a passage 1 as shown in FIG.
With 2h and 12h on top, insulation panel 42
It is fitted into the opening of the window to form a window.

Therefore, according to the present invention, when supplying the insulating gas G to the space 5, the passage 12h serving as a supply passage and the passage 12h serving as an exhaust passage are both located above the space 5, so that most of the air in the space 5 is Unless the gas is replaced with the insulating gas G, there will be no gas leakage from the passages 12h, 12h, and no gas leakage will occur as the supply nozzle 14 is withdrawn. Also, the completed multilayer transparent plate 1
, when the passages 12h, 12h are located at the upper part and arranged in the opening of the wall body, a slight sealing failure occurs in the sealing members 7', 7' for some reason, and the space 5 and the outside are connected through the passages 12h, 12h. Even if there is a slight communication, there will be no gas leakage from the communication points, and the multilayer transparent plate 1 will not lose its original function, and even a quick-drying desiccant can be used immediately after manufacturing. In addition to being able to quickly remove the moisture contained in the insulating gas, during use,
Since the moisture that gradually enters the space can be removed using a slow-drying desiccant, moisture absorption takes place over a long period of time, providing complete protection against moisture and preventing the transparent plate from fogging up from the inside.

(g) Other embodiments of the present invention (1) Figures 16 and 17 show three transparent plates 2
A, 2B, 2C and two passages 12h, 1, respectively.
An example of a semi-finished product of a three-layer transparent plate 1' is shown in which two frame members 3A and 3B each having a diameter of 2h are connected to each other to form two-layer spaces 5A and 5B.

(2) In Fig. 18, the supply nozzle 14 is passed through one passage 12h, and the outer peripheral surface of this nozzle and the passage 12h are
An embodiment is shown in which the space between the wall and the wall is also used as a discharge path for air A.

(3) In FIGS. 19 and 20, two adjacent passages 12h and 12h are also formed in the base 12n of one sonar connector 12A, one of which is a supply passage and the other is a discharge passage. An example is shown below.

(h) Effects of the present invention According to the present invention described above, the following effects are produced.

It is used from the time of manufacturing the multi-layer transparent plate because at least one passage for supplying insulating gas to the space of the multi-layer transparent plate and/or discharging air from the space to the outside is formed only in the upper part of the frame member. As a result, the passage is always located above the insulating gas, and as a result, the insulating glass and air can be replaced well in the supply of the insulating gas, and not only can leakage of the insulating gas be prevented. Even if the multilayer transparent plate is placed on a wall as a door or window after being sealed, leakage of the insulating gas from the passage can be prevented.

Since the frame member is filled with both quick-drying and slow-drying desiccant, immediately after manufacturing, even the quick-drying desiccant can quickly remove the moisture contained in the insulating gas. In this case, the moisture that gradually enters the space can be removed using a slow-drying desiccant, so there is complete protection against moisture, and the transparent plate will not fog up from the inside.

[Brief explanation of the drawing]

1 to 7 show a background art transparent structure and its manufacturing method, FIG. 1 is a perspective view of a multilayer transparent plate, FIG. 2 is a sectional view taken along line A-A' in FIG. 1, and FIG. 4 is a sectional view taken along line B-B' in FIG. 1, FIG. 5 is a sectional view taken along line C-C' in FIG. Figure 7 is Figure 6D-
D' sectional view, FIGS. 8 to 15 show examples of the transparent structure of the present invention, FIG. 8 is a perspective view of a corner connector, and FIG. 9 is an exploded perspective view showing the assembly process of a multilayer transparent plate. Fig. 10 is a perspective view showing the entire supply process using the adiabatic gas supply machine, Fig. 11 is a perspective view of main parts of the supply process, Fig. 12 is a sectional view taken along line E-E' in Fig.
Figure 3 is a vertical cross-sectional view of the main part showing the sealed state of the passage, Figure 14 is a perspective view of a refrigerator with a multi-layer transparent plate as a transparent door, and Figure 15 is a heat insulation diagram with a multi-layer transparent plate placed in the window. Longitudinal cross-sectional views of main parts of the panel, FIGS. 16 to 20 show other embodiments of the present invention.
Fig. 6 is a perspective view of a semi-finished product of a three-layer transparent plate, Fig. 17 is a sectional view taken along line F-F' in Fig. 16, and Fig. 18 is a vertical sectional view of the main part with one passage serving as a supply path and a discharge path. FIG. 19 is a perspective view of a corner connector having two passages formed in its base, and FIG. 20 is a longitudinal sectional view of a main part using the corner connector of FIG. 19. 2A, 2B...Transparent plate, 3...Frame member, 4A,
4B, 4C, 4D... spacer, 5... space, 6
A, 6B...adhesive, 12A, 12B, 12C,
12D...corner connector, 12...passage, 7'
...Sealing member, G...Insulating gas.

Claims (1)

[Claims] 1. At least two transparent plates facing each other with a gap between them, at least one frame member interposed between the peripheral edges of opposing surfaces of the transparent plates, and the transparent plates and frame members mutually In a multi-layer transparent plate composed of a connecting adhesive, at least one layer of space defined by the connection of the transparent plate and the frame member, and an insulating gas having a higher specific gravity than air filled in this space, the frame The member is filled with both quick-drying and slow-drying desiccant, and a passageway is provided in the upper part of the frame member to communicate the space with the outside, supply insulating gas to the space, and/or exhaust air in the space to the outside. A transparent structure in which a multilayer transparent plate is provided with at least one sealing member for blocking the passageway and is arranged as a door or window in an opening of a wall body with the passageway at the top.