KR100228516B1 - Multi-layer glass - Google Patents

Abstract

The present invention relates to a multi-layer glass that can effectively eliminate the generation of condensation while reducing the thickness dimension, the present invention is a plurality of glass plates (1) (1) through a spacer 21 made of a thin plate-shaped drying material It laminates and seals the circumference and comprises multilayer glass G.

Description

Multilayer glass

1 is a perspective view of a low temperature showcase using the multilayer glass of the present invention.

2 is a plan view of the multilayer glass of the present invention.

3 is a longitudinal side view of the multilayer glass of the present invention.

4 is an enlarged end side view of the multilayer glass of the present invention.

5 is a plan view of a conventional multilayer glass.

6 is a longitudinal side view of a conventional multilayer glass.

* Explanation of symbols for main parts of the drawings

G: multilayer glass 1: glass plate

2: film heater 4: lead wire

21 spacer 26 interval

28: seal

The present invention is a showcase or home The present invention relates to a multilayer glass used for a sight glass or door of a business refrigerator, a prefab refrigerator, or a window or a door of a building.

Conventionally, this type of laminated glass has two transparent glass plates, as shown in Japanese Unexamined Patent Application Publication No. 60-38860 (F25D 21/04) or 60-22842 (A47F 3/04). It is laminated | stacked through the spacer (space | interval holding member), and is comprised by sealing around.

The conventional multilayer glass 100 according to FIGS. 5 and 6 is shown. In each drawing, the laminated glass 100 has a thickness of 3 Two transparent glass plates (1) (1) and spacers (101) ) And a film heater 2 or the like. This film heater (2) is a heat ray reflecting film having excellent visible light transmittance and heat ray reflectance as shown in Japanese Unexamined Patent Publication No. 60-38860 (F25D 21/04), and includes a base layer such as polyester and silver. It is composed by sequentially depositing a deposition layer made of a conductive metal such as titanium oxide or aluminum, a transparent protective plate, and the like, and having a moisture-proofing property and a selective transmissive reflection function, and having the property of transmitting visible light and reflecting infrared rays.

The film heater 2 is adhered to the inner surface of one glass plate 1, and silver electrodes (bus bars) 3 and 3 are formed on the edges thereof, respectively.

Meanwhile, the spacers 101 and ) Is made of metal such as aluminum or iron, and the thickness is 6 It has an internal hollow cylindrical shape with a square cross section of degree. The spacer 101 has a minute gap on the wall surface and is filled with a desiccant 102 made of a mixture of molecular sieves and silica gel inside the spacer 101. And, such a spacer 101, Corner pin (103, made of resin) After assembling in a frame shape by the < Desc / Clms Page number 5 >), it is adhered to the inner peripheral edge of the glass plate 1 by means of an adhesive 104 such as double-sided tape disposed on one surface.

On the other hand, the lead wires 4 and 4 for electrical current are soldered 5 and 1 to the electrodes 3 and 3 of the film heater 2. ^To 1.5 Height), but each spacer 101, ) Is positioned around the film heater 2, so that the through hole 106, 106 is formed in the spacer 101 by a drill or the like, and the lead wire 4 through the through hole 106, 106. (4) is withdrawn. In this state, the other glass plate 1 is covered, and the spacer 101, After sticking with the same adhesive 104 formed on the other side of), the multilayer glass 100 is completed by sealing (sealing) with the sealing material 107, such as thiocol.

Such a multilayer glass 100 is used as a sliding door of a low temperature showcase, for example, and receives cooling from the inside, but condenses to the surface of the glass plate 1 because the film heater 2 is energized and generates heat from its front surface. (Cloudy) is resolved. In addition, the moisture between the two glass plates 1, 1 is separated from the spacers 101, Since it is adsorbed by the desiccant 102 filled in the inside, condensation (cloudy) to the inner surface of the glass plate 1 (1) is also eliminated.

In addition, since the film heater 2 reflects infrared rays (heat rays), the heat insulating performance is also improved, and the thickness dimension of the air layer (9) is compared with the case of insulating only the air layer between the glass plates (1) and (1). ^To ) Could be reduced.

However, in such a conventional configuration, since the desiccant 102 needs to be filled in the spacer 101, the thickness dimension of the spacer 101 is at least 6 as described above. Degree is needed. Therefore, even if the thickness of the whole multilayer glass 100 is 3, + 6 + 3 = 12 When used as a sliding door of the low-temperature showcase as described above, there was a problem that the appearance is damaged.

In addition, since the lead wire 4 of the film heater 2 is drawn out through the through hole 106 formed in the metal spacer 101, the lead wire 4 is damaged at the edge of the through hole 106, and a short circuit accident occurs. It may occur. Moreover, since the metal spacer 101 is a conductor which conducts heat well, the heat insulation performance of the spacer 101 part fell, and there existed a problem that only the surface of the glass plate 1 (1) corresponding to it condensed.

This invention is made | formed in order to solve such a conventional technical subject, and it aims at providing the multilayer glass which can effectively eliminate the generation | occurrence | production of dew condensation, while promoting the thickness dimension.

In the multilayer glass of the present invention, a plurality of glass plates are laminated through a spacer made of a thin plate drying agent and sealed around.

2. The multilayer glass of the present invention is obtained by laminating a plurality of glass plates through a spacer and sealing the surroundings, wherein the spacer is composed of a thin plate-shaped drying material comprising a moisture absorption layer and a resin protective layer provided with moisture permeability provided on both sides thereof. It is.

3. The laminated glass of this invention WHEREIN: In each said invention, the inner surface of a glass plate arrange | positions the transparent film heater which is located inside a spacer, and is excellent in heat ray reflectance.

The multilayer glass of this invention extracts the lead wire from a film heater from the space | interval provided in the spacer in the above.

According to the multilayer glass of the present invention, since a plurality of glass plates are laminated as a spacer using a thin plate drying material, the gap between the glass plates is prevented by adsorbing moisture between the glass plates with the thin plate drying material to prevent the occurrence of condensation. I can narrow it down. Therefore, the thickness dimension of the whole multilayer glass can be remarkably reduced compared with the conventional one, and it can be made thin, and when used for a door, a window, etc., the external appearance can be improved.

In addition, the number of parts can be reduced compared with the prior art, and the assembly workability is improved, and the weight can be reduced.

2. According to the multilayer glass of the present invention, in addition to the above, the spacer is formed of a moisture-absorbing layer and a thin plate-shaped precursor made of a resin protective layer having moisture permeability formed on both surfaces thereof, so that the heat insulating performance of the spacer portion is higher than in the related art. It is possible to improve, and it is possible to eliminate the disadvantages of condensation on the glass plate of this part.

3. According to the multilayer glass of the present invention, in addition to the above, a transparent film heater positioned inside the spacer and having excellent heat ray reflectance is disposed on the inner surface of the glass plate, and condensation on the glass plate is eliminated by heat generation from the film heater. At the same time, it is possible to maintain the required thermal insulation performance by supplementing the degradation of the thermal insulation resulting from narrowing the space between the glass plates.

Further, according to the multilayer glass of the fourth aspect of the present invention, in addition to the above, the lead wire from the film heater is taken out from the gap formed in the spacer, so that wiring work to the film heater becomes very easy, and the thin plate-shaped drying material is an insulator. The occurrence of a short circuit accident at the lead portion of the lead wire can also be eliminated, thereby improving safety.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described in detail based on drawing. 1 is a perspective view of a low-temperature showcase S using the multilayer glass G of the present invention, FIG. 2 is a plan view of the multilayer glass G of the present invention, and FIG. 3 is a longitudinal side view of the multilayer glass G, and FIG. FIG. Is an enlarged view of FIG. 3. In addition, in each figure, the same code | symbol shall be same as FIG. 5 and FIG.

The low temperature showcase S of the embodiment is a refrigerated showcase for dessert confectionery, for example, installed in a convenience store, and includes a main body 11 composed of a heat insulating wall and a support 12 placed upright at four corners of the main body 11. ) And these props (12, Ceiling wall 13 attached to the upper end of the upper and left and right posts between the ceiling wall 13 and the main body 11, Sliding doors 14 and 14 inserted between the multi-layered glass G of the present invention interposed between the windows and the support 12 and 12 on the front surface between the ceiling wall 13 and the main body 11. )

The space surrounded by the multilayer glass G, the doors 14 and 14, and the ceiling wall 13 around these become the storage chamber 17, and the shelf of several stages is installed in this storage chamber 17. As shown in FIG. The storage chamber 17 is then cooled to a predetermined refrigeration temperature by a refrigerator (not shown) mounted in the main body 11. Moreover, each said door 14 and 14 is also comprised by attaching the chassis 16 around the laminated glass G of this invention.

Laminated glass (G) of the present invention is as described above Two transparent glass plates (1) (1) and spacers (21) ) And the film heater 2 as described above. Similarly, the film heater 2 is adhered to the inner surface of one glass plate 1, and electrodes (bus bars) 3 and 3 made of silver are formed on the upper, lower, left and right edges, respectively.

Meanwhile, the spacers 21, ) Is a thickness 1 formed by laminating a protective layer made of moisture-permeable resin on both sides of a moisture absorbing layer made of a resin and an inorganic filler, or by mixing and mixing an inorganic filler and a resin. Two sheets of thin sheet (dry sheet) drying material (for example, Sasaki Chemical Co., Ltd. dry keep (brand name) are bonded to double-sided tape, and thickness is approximately 2 It is made into a single sheet shape. In addition, the thickness of the drying material 22 is 2 In the case of using a spacer 21, ) Is composed of one drying material 22.

And, such a spacer 21, ) Is positioned around the film heater 2 by a pressure-sensitive adhesive 24 such as a double-sided tape formed on one surface thereof and adhered to the edge portions (four sides) of the inner surface circumference of the glass plate 1.

Electrodes 3 and 3 of the film heater 2 have lead wires 4 and 4 for soldering. ^To 1.5 Height), but gaps 26 and 26 of a predetermined width are formed in the spacers 21 corresponding to the top and bottom of the fixed portion, and the lead wires are formed through the gaps 26 and 26. (4) (4) is withdrawn.

In this case, the lead wire 4 drawn out from the electrode 3 at the upper edge of the film heater 2 faces the lead wire 4 drawn out from the upper left side and from the electrode 3 at the lower edge. It is surrounded by the upper side bypassing the outer side of, and withdrawn facing upward from the upper right side. Thereby, since both lead wires 4 and 4 can be taken out from the upper part of the door 14, wiring process becomes easy.

In this state, the other glass plate 1 is covered, and the spacer 21, After affixing with the same adhesive agent 24 formed in the other surface of (), the multilayer glass G is completed by sealing (sealing) the circumference (outside of the lead wire 4) with the sealing material 28, such as thiocol. .

The multilayer glass G receives the cooling action from the storage chamber 17, but the film heater 2 is energized through the lead wires 4 and 4, and generates heat from the front surface thereof. (Cloudy) is resolved. In addition, the moisture between the two glass plates 1, 1 is separated by the spacers 21, Since it is adsorbed by the moisture absorption layer of), condensation (cloudy) to the inner surface of the glass plate 1 (1) is also eliminated.

In particular, since the thin plate-shaped drying material is used as the spacer 21, the distance between the glass plates 1 and 1 is about 2 Narrowed down. Therefore, the thickness dimension of the whole laminated glass G is 3 +2 +3 = 8 Since it is significantly reduced in size and thinner than in the related art, the appearance of the low-temperature show case S is improved.

In addition, since the number of parts is reduced, the assembly workability is improved and the weight is reduced as compared with the prior art, the opening and closing operation of the door 14 is also improved and thinned, so that it can be used in place of a door made of a conventional single plate.

Moreover, since the spacer 21 is provided with heat insulation, compared with the conventional one, the heat insulation performance of the spacer 21 part is also improved and the disadvantage that it is condensed to the glass plate 1 (1) of this part is also eliminated. In particular, the film heater 2 reflecting the heating wire (infrared ray) is compensated for the decrease in the thermal insulation resulting from narrowing the space between the glass plates 1 and 1, and the required thermal insulation performance is also maintained.

Moreover, since the lead wire 4 for energizing the film heater 2 is also taken out from the space | interval 26 formed in the spacer 21, the wiring work to the film heater 2 becomes very easy, and the spacer 21 Since is an insulator, a short circuit accident of the lead wire 4 when passing through the space | interval 26 is also eliminated, and safety improves.

Moreover, although the laminated glass was comprised by the two glass plates in the Example, you may laminate | stack a several glass plate on it. In addition, although the laminated glass of this invention was applied to the low-temperature showcase in the Example, it is effective not only to this but also to use it as a refrigerator or a window or door of a building.

As described above, according to the invention of claim 1, since a thin plate-like drying material is used and a plurality of glass plates are stacked as spacers, the glass plate is adsorbed by adsorbing moisture between the glass plates with the plate-shaped drying material to prevent the occurrence of condensation. You can narrow the gap between them. Therefore, the thickness dimension of the whole multilayer glass can be remarkably reduced and thinned compared with the past, and when it is used for a door, a window, etc., the external appearance can be improved.

In addition, the number of parts can be reduced compared to the prior art, thereby improving the assembly workability and at the same time reducing the weight.

According to the invention of claim 2, in addition to the above, the spacer is composed of a thin plate-like drying material composed of a moisture absorbing layer and a resin protective layer disposed on both surfaces thereof and having moisture permeability, so that the thermal insulation performance of the spacer portion is improved as compared with the prior art. It is possible to eliminate the disadvantages of condensation on the glass plate of this part.

According to the invention of claim 3, in addition to the above, a transparent film heater positioned inside the spacer and having excellent heat ray reflectance is disposed on the inner surface of the glass plate, and condensation on the glass plate is eliminated by heat generation from the film heater. It is possible to maintain the required thermal insulation performance by supplementing the degradation of the thermal insulation resulting from narrowing the mutual gap.

In addition, according to the invention of claim 4, in addition to the above, the lead wire from the film heater is taken out from the gap formed in the spacer, so that wiring work to the film heater becomes very easy, and the thin plate-shaped drying material is an insulator, so that the lead wire The occurrence of a short circuit accident in the lead portion can also be eliminated, thereby improving stability.

Claims (3)

In a multilayer glass in which a plurality of glass plates are laminated through a spacer and sealed around the spacer, the spacer includes one sheet-like dry material provided with a protective layer on a moisture-absorbing layer disposed at the center and a moisture-permeable resin disposed on both sides thereof, or Two or more sheets are bonded, and the thickness of the spacers is 2 between each of the glass plates. Laminated glass characterized by the following. The multilayer glass according to claim 1, wherein the inner surface of the glass plate is provided with a transparent film heater positioned inside the spacer and having excellent heat ray reflectance. The multilayer glass according to claim 2, wherein the lead wire from the film heater is taken out from the gap formed in the spacer.