JP2598755Y2 - Double glazing to prevent condensation - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double glazing for preventing dew condensation, in which a gas layer is provided between two glass sheets.

[0002]

2. Description of the Related Art Conventionally, in order to obtain a heat insulating effect and a sound insulating effect, a double glazing for preventing condensation has been used in which an air layer (nitrogen may be used instead of air) is provided between two glass sheets. It is known. If the gas layer of this dew-prevention double glazing is sealed or unsealed but the inflow of outside air is insufficient, the moisture contained in the gas layer may become steam or water depending on the temperature. However, there was a disadvantage that the glass was fogged. For this reason, as shown in FIG. 6, a case 65 containing a powdery or granular desiccant 63 is installed as a spacer in the gas layer 64, and this desiccant 63 is provided.
A double glazing 60 for preventing dew condensation, which absorbs moisture by the action of and solves the above-mentioned disadvantages, has been developed. This case 65
Is provided with a slit 65 a communicating with the gas layer 64, and moisture contained in the gas layer 64 can come into contact with the desiccant 63 through the slit 65 a. The gas layer 64 is a region surrounded by the plate glasses 61 and 62 and the case 65.

[0003]

However, in the above dew-prevention double-glazing unit 60, when the powdery or granular desiccant 63 is put into the case 65 during its manufacture, or when the case 65 containing the desiccant 63 is used. When cutting to a predetermined size, there is a problem that the spill may occur and the workability is poor.

The present invention has been made in view of the above problems, and has as its object to provide a dew condensation preventing double glazing which improves workability during manufacturing.

[0005]

In order to solve the above-mentioned problems, a dew-prevention double glazing according to the present invention is provided with a gas layer between two glass sheets, and the gas layer has a substantially rod-like or plate-like shape. In the dew-prevention double glazing in which a drying agent is disposed, the above-mentioned substantially rod-shaped or substantially plate-shaped drying agent is a powdery or granular drying agent .
Aggregate, water-soluble cellulose ether as binder
Is interposed in the device.

[0006]

In the above dew condensation preventing double glazing, the moisture contained in the gas layer is adsorbed by the substantially bar-shaped or substantially plate-shaped drying agent disposed in the gas layer. There is no condensation. Also,
Since the substantially bar-shaped or substantially plate-shaped desiccant is used, it does not spill out during the production of the dew condensation preventing double-glazed glass unlike the conventional powdery or granular desiccant, thereby improving workability.

The desiccant in a substantially rod-like or plate-like shape may be arranged in a case provided with a communicating portion communicating with the gas layer. In this case, a substantially bar-shaped or substantially plate-shaped desiccant having insufficient strength can be used. Further, the substantially bar-shaped or substantially plate-shaped desiccant contacts the moisture contained in the gas layer through the communicating portion of the case.

The above-mentioned substantially bar-shaped or substantially plate-shaped desiccant includes
Any material having a property of absorbing moisture can be used without particular limitation. For example, chlorides such as sodium chloride / magnesium chloride / calcium chloride, carbonates such as calcium carbonate, hydroxides such as slaked lime, oxides such as quicklime, silica gel, zeolites and the like may be used alone or in combination as appropriate. Although it is possible, it is preferable to use silica gel alone or in combination with another desiccant as appropriate in consideration of the adsorption capacity and the like.

The substantially bar-shaped or substantially plate-shaped desiccant is an aggregate of powdery or granular silica gel or zeolite, etc., alone or appropriately combined with other desiccants.
In particular, it is preferable to use an aggregate in which a region not covered with the binder exists on the surface of the aggregate. This is because, in this region, the openings of the pores of the desiccant are not closed by the binder, so that a sufficient adsorption / desorption function is maintained in this region, and a sufficient adsorption / desorption function can be exhibited as an aggregate. . It is preferable to use an aggregate containing silica gel in consideration of the adsorption capacity and the like.

[0010] The powdery or granular desiccant used here is
The internal structure and the shape are not limited, and can be used in a well-formed shape such as a spherical shape or a shape made irregular by crushing or the like. The smaller the particle size of the powdery or granular desiccant becomes, the better the moldability of the kneaded material becomes. Therefore, it is preferably 1 mm or less, more preferably 100 μm or less.

The binder used here is a water-soluble cellulose.
Ether. Incidentally, kneading the powdered or granular desiccant, considering the molding, high solvent retention performance, it is preferable good binder shape retention so as not to lose shape by extrusion molding or the like, the water from these points Sex cell
Loose ether is excellent. The binder is preferably in the form of powder or granules so as to be dry-mixed evenly with the powder or granule desiccant. In this case, if the particle size of the binder is increased, the ratio of the interface of the desiccant coated with the binder increases, so the smaller the particle size of the binder, the better the particle size of the powdery or granular desiccant.

When the mixing ratio of the binder is increased, the mechanical strength of the aggregate is increased, but the ratio of the interface of the desiccant coated with the binder is also increased. 50 parts by weight or less based on parts (50% or less by weight of the mixture) is preferred. Desiccant 8
When the amount of the binder is 20 parts by weight or less relative to 0 parts by weight (20% or less of the mixture weight), the adsorption and desorption performance of the aggregate becomes particularly good.
% Is more preferable. However, the fact that the mixing ratio of the binder slightly exceeds 20% does not mean that the adsorption / desorption performance of the aggregate is suddenly reduced.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. 1A and 1B are explanatory views of the first embodiment. FIG. 1A is a partial cross-sectional view, and FIG. 1B is a cross-sectional view along AA in FIG.

Double glass 10 for preventing dew condensation according to the first embodiment
Are two sheet glasses 11, 12 and both sheet glasses 11, 1
2 and a substantially bar-shaped desiccant 13 having a quadrangular cross section disposed along the outer periphery of the desiccant 13. A portion surrounded by the two sheet glasses 11 and 12 and the substantially bar-shaped desiccant 13 is an air layer 14. As the substantially bar-shaped desiccant 13 , powdery or granular silica gel or zeolite bonded via a binder and formed into a substantially bar shape can be used .

According to the dew condensation preventing double glazing 10,
Since the water contained in the air layer 14 is adsorbed by the substantially bar-shaped desiccant 13, the moisture in the air layer does not cause dew condensation or fogging due to a temperature change. Also, since no powdery or granular desiccant is used, the desiccant 13 does not spill during production, and is easy to handle.
Therefore, there is an effect that workability at the time of manufacturing is improved, and the cost can be reduced.

[0016] In the anti-condensation double-glazing 10, but with a drying agent 13 in a substantially rod-shaped spacers instead, between the two plates <br/> glass 11 and 12, separately seal such as rubber or resin A member may be provided. The cross section of the substantially bar-shaped desiccant 13 is not limited to a square, but may be a circle, an ellipse, a polygon, a donut, or the like.

FIG. 2 is an explanatory view of the second embodiment.
Is a partial cross-sectional view, and (b) is a BB cross-sectional view of FIG. The dew-prevention double glazing 20 of the second embodiment is the same as the first embodiment except that a substantially bar-shaped desiccant 23 is held in the case 25.
This is the same as the dew condensation preventing double-glazed glass 10 of the embodiment. The case 25 is formed of metal aluminum and is disposed along the outer peripheries of the two glass plates 21 and 22. Also,
A slit 25 a as a communication part is provided on the air layer 24 side of the case 25, and the desiccant 23 can contact moisture contained in the air layer 24 through the slit 25 a. In the second embodiment, since the desiccant 23 is held in the case 25, it is possible to use a substantially rod-shaped desiccant having low strength. Other functions and effects are the same as those of the first embodiment, and the description thereof is omitted. Note that a seal member such as rubber or resin may be provided between the case 25 and the plate glasses 21 and 22. Also, between the two glass sheets 21 and 22
Separately, a seal member may be provided. Furthermore, case 25
It may be formed of a sealing member.

FIG. 3 is an explanatory view of the third embodiment, in which (a)
3 is a partial sectional view, and FIG. 3B is a sectional view taken along line CC of FIG. The dew condensation preventing double glazing 30 of the third embodiment is different from that of the third embodiment in that a plurality of plate-shaped desiccants 33 are held in the case 25.
Since the second embodiment is the same as the second embodiment, the same components are denoted by the same reference numerals. Further, the operation and effect of the third embodiment are the same as those of the second embodiment, and therefore description thereof will be omitted.

FIG. 4 is an explanatory view of the fourth embodiment, in which (a)
FIG. 4B is a partial cross-sectional view, and FIG. 4B is a cross-sectional view taken along line D-D of FIG. The dew condensation preventing double-glazing of the fourth embodiment is the same as the case 25.
The second embodiment is the same as the second embodiment except that a plurality of rod-shaped desiccants 43 having a circular cross section are held therein, and the same components are denoted by the same reference numerals. The operation and effect of the fourth embodiment are the same as those of the second embodiment, and a description thereof will be omitted.

The substantially bar-like or plate-like desiccants 13, 23, 33, and 43 used in each of the above embodiments are aggregates obtained by joining powdery or granular silica gel or zeolite via a binder. Preferably, there is a region not covered by the binder. As an example, a production example of a silica gel aggregate will be described below.

Powdered silica gel (100 mesh pass) 1
00 parts by weight and 10 parts by weight of powdery methylcellulose (100 mesh pass) were charged into a mixer, sufficiently stirred and mixed to form a mixture. Next, 60 parts of ion-exchanged water was added to this mixture.
The mixture was kneaded with a three-roll kneader. The roll temperature during kneading was maintained at 10 to 15 ° C. Further, the kneaded material obtained above was put into an extruder and extruded at a temperature of 10 to 20 ° C. to form a strip. Preliminary drying at 60 ° C for 10 minutes, 120 ° C,
The main drying was performed for 30 minutes to solidify to obtain a plate-like silica gel aggregate.

As a comparative example, the same kind of silica gel as used in the production of plate-like silica gel was kneaded with an adhesive, molded,
It was solidified to produce a plate-like silica gel aggregate similar to that of the example. The raw material silica gel of the example and the comparative example and the silica gel aggregate of the example and the comparative example at 20%, 50% and 90% of relative humidity were measured for the moisture absorption rate, and the moisture absorption performance was compared. Was. In addition,

[0023]

(Equation 1)

[0024]

(Equation 2)

## EQU1 ##

[0026]

[Table 1]

As is clear from Table 1, the silica gel aggregates of the examples show only a slight decrease in performance as compared with the powdered silica gel as the raw material, and the respective silica gel particles constituting the silica gel aggregates It can be seen that the pores of were not closed. FIG. 5 is an explanatory diagram schematically comparing the silica gel aggregate with a conventional silica gel aggregate.

The above desiccant 1
When 3, 23, 33, and 43 are formed, the dew-prevention double-glazings 10, 20, 30, and 40 of each of the above embodiments maintain almost the same performance as that of the case using conventional powdered silica gel. Further, the effect that the workability at the time of manufacturing the dew condensation preventing double glazing is improved is obtained.

In the conventional dew-prevention double-glazing 60 shown in FIG. 6, the powdery or granular desiccant 63 may spill out of the slit 65a provided in the case 65 during use. Although there was a disadvantage that the appearance of the double-glazed glass 60 was deteriorated, according to the above-described second to fourth embodiments, such a disadvantage is solved.

The present invention is not limited to the above embodiments, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the invention. For example, the desiccants 13, 23, 33, and 43 are used for the sheet glasses 11, 12, and 2, respectively.
Although they are arranged along the outer peripheries of the air conditioners 1 and 22, they may be disposed in the air layers 14 and 24, and may be a part of the outer perimeter. In addition, the air layers 14, 24 of the above-mentioned double glazings 10, 20, 30, 40 may be sealed, but may not be sealed, but may have insufficient inflow of outside air.
In addition, the above silica gel aggregate is bonded by a binder using silica gel alone, but may be aggregated by mixing another desiccant such as zeolite with silica gel and binding by a binder. In this case, almost the same effect is obtained. Is obtained.

[0031]

As described above, according to the dew condensation preventing double glazing of the present invention, the workability during manufacturing can be improved, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a first embodiment of the present invention;
1 is a partial sectional view, and FIG. 1B is an AA sectional view of FIG.

FIG. 2 is an explanatory view of a second embodiment of the present invention;
Is a partial cross-sectional view, and (b) is a BB cross-sectional view of FIG.

FIG. 3 is an explanatory view of a third embodiment of the present invention;
3 is a partial sectional view, and FIG. 3B is a sectional view taken along line CC of FIG.

FIG. 4 is an explanatory view of a fourth embodiment of the present invention;
FIG. 4B is a partial cross-sectional view, and FIG. 4B is a cross-sectional view taken along line D-D of FIG.

FIG. 5 shows a silica gel aggregate suitable for the present invention and a conventional silica gel.
It is an explanatory diagram schematically comparing with a Rica gel aggregate,Figure
5(A) is a schematic diagram of silica gel as a raw material,FIG.
(B) is a schematic diagram of a conventional silica gel aggregate,FIG.(C)
FIG. 2 is a schematic diagram of a silica gel aggregate suitable for the present invention.

6A and 6B are explanatory views of a conventional dew condensation preventing double-glazing, in which FIG. 6A is a partial cross-sectional view and FIG. 6B is EE in FIG. 6A.
It is sectional drawing.

[Explanation of symbols]

 10, 20, 30, 40: double glazing for preventing dew condensation, 11, 12, 21, 22: plate glass, 13, 23, 33, 43: desiccant, 14, 24: air layer , 25 ... case, 25a ... slit

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-51-10843 (JP, A) JP-A-61-46242 (JP, A) JP-A-5-78120 (JP, A) 45349 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E06B 3/66 C03C 27/06

Claims (5)

(57) [Scope of request for utility model registration] 1. A dew condensation preventing double glazing comprising a gas layer provided between two sheet glasses and a substantially bar-shaped or substantially plate-shaped desiccant disposed in the gas layer, wherein the substantially bar-shaped or substantially plate-shaped drying agent is provided. The agent is an aggregate of a powdery or granular desiccant and a water-soluble cellulose ester as a binder.
Multi-layer glass for preventing dew condensation, characterized by the presence of a tellurium. 2. The multi-layer for preventing dew condensation according to claim 1, wherein the substantially bar-shaped or substantially plate-shaped desiccant is disposed in a case having a communication portion communicating with the gas layer. Glass. 3. The double-glazing according to claim 1, wherein the water-soluble cellulose ether is methylcellulose. 4. The double-glazing according to claim 1, wherein the powdery or granular desiccant comprises at least a powdery or granular silica gel. 5. The dew condensation preventing double-glazed glass according to claim 1, wherein a region not covered by the binder exists on the surface of the aggregate.