JPH0738559U - Double glazing to prevent condensation - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide a double glazing for preventing dew condensation that improves workability during manufacturing. [Structure] The double glazing 10 for preventing dew condensation is a double-sided glass 1
A substantially rod-shaped desiccant 13 having a quadrangular cross section is arranged along the outer circumference between the first and the second portions. Two sheets of glass 11,
The portion surrounded by 12 and the substantially bar-shaped desiccant 13 is the air layer 1
It is 4. As the desiccant 13, for example, it is possible to use a cardboard impregnated with an aqueous solution of sodium chloride and dried, or a cardboard that is formed by bonding powdered silica gel or zeolite through a binder and is shaped into a bar. . According to this double glazing 10, since the moisture contained in the air layer 14 is adsorbed by the desiccant 13, the temperature of the air layer 14 is changed by the temperature change.
The water content does not cause dew condensation or clouding. In addition, since the desiccant 13 does not spill during manufacturing, workability during manufacturing is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a double glazing for preventing dew condensation in which a gas layer is provided between two sheet glasses.

[0002]

[Prior art]

 Conventionally, it has been known to use a double glazing for dew condensation prevention in which an air layer (nitrogen may be used instead of air) is provided between two glass sheets in order to obtain a heat insulating effect and a sound insulating effect. There is. When the gas layer of this double glazing for dew condensation is sealed or not sealed but the inflow of outside air is insufficient, the water content in the gas layer becomes water vapor or water depending on the temperature. Therefore, there is a drawback that the glass becomes cloudy. Therefore, as shown in FIG. 6, a case 65 containing a powdery or granular desiccant 63 is installed in the gas layer 64 as a spacer, and the action of the desiccant 63 absorbs moisture to eliminate the above-mentioned drawbacks. A double glazing 60 for preventing dew condensation has been developed. The case 65 is provided with a slit 65a communicating with the gas layer 64, and the moisture contained in the gas layer 64 can come into contact with the desiccant 63 through the slit 65a. The gas layer 64 is a region surrounded by the plate glasses 61 and 62 and the case 65.

[0003]

[Problems to be solved by the device]

 However, when the powdery or granular desiccant 63 is put in the case 65 or the case 65 containing the desiccant 63 is cut into a predetermined size in the production of the dew condensation preventing double glazing 60. However, there was the inconvenience that it spilled and the workability was poor.

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

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the dew condensation preventing double glazing of the present invention is a dew condensation preventing double glazing in which a gas layer is provided between two plate glasses, and is substantially the same as the gas layer of the plate glass. It is characterized in that a rod-shaped or substantially plate-shaped desiccant is arranged.

[0006]

[Action]

 In the above-mentioned double-layer glass for preventing dew condensation, the water contained in the gas layer is adsorbed by the substantially rod-shaped or plate-shaped desiccant arranged in the gas layer, so that the glass may become cloudy or dew condensation may occur due to temperature change. Does not occur. Also, since a substantially rod-shaped or plate-shaped desiccant is used, workability is improved without spilling during the production of the dew condensation prevention multi-layer glass unlike the conventional powdery or granular desiccant. .

The substantially rod-shaped or plate-shaped desiccant may be arranged in a case having a communication portion that communicates with the gas layer. In this case, it is possible to use a substantially rod-shaped or plate-shaped desiccant having insufficient strength. Further, the substantially rod-shaped or plate-shaped desiccant comes into contact with the water contained in the gas layer through the communication part of the case.

The above-mentioned substantially rod-shaped or plate-shaped desiccant may be used without particular limitation as long as it has a property of absorbing water. For example, chlorides such as sodium chloride / magnesium chloride / calcium chloride, carbonates such as calcium carbonate, hydroxides such as hydrated ash, oxides such as quick lime, silica gel, zeolite, etc. may be used alone or in appropriate combination. However, considering the adsorption ability and the like, it is preferable to use silica gel alone or in combination with other desiccant as appropriate.

When chloride or oxide is used as the desiccant, for example, cardboard having a predetermined shape may be impregnated with an aqueous solution of chloride and then dried to obtain a substantially rod-shaped or plate-shaped desiccant. On the other hand, when silica gel, zeolite, or the like is used as a desiccant alone or in combination with another desiccant as appropriate, these powdery or granular desiccants are bonded with a binder to form a rod-like or plate-like aggregate. It is preferable to use a desiccant, and it is particularly preferable to use a desiccant having a region where the surface of the aggregate is not covered with the binder. This is because, in this area, the openings of the pores of the desiccant are not blocked by the binder, so a sufficient adsorption / desorption function is retained in this area, and a sufficient adsorption / desorption function as an aggregate can be exhibited. is there. Further, considering the adsorption ability and the like, it is preferable to use an aggregate containing silica gel.

The powdery or granular desiccant used here is not limited in internal structure and shape, and can be used in a regular shape such as a spherical shape or in an irregular shape due to crushing or the like. The smaller the particle size of the powdery or granular desiccant is, the better the moldability of the kneaded product is. Therefore, the particle size is preferably 1 mm or less, more preferably 100 μm or less.

The binder used here is not particularly limited, but examples thereof include polyvinyl alcohol, partially saponified polyvinyl acetate, water-soluble cellulose ester, and resin such as silicone rubber. In consideration of kneading and molding with a powdery or granular desiccant, a binder having high solvent retention performance and good shape retention property so as not to lose its shape even by extrusion molding is preferable. Alcohol, partially saponified polyvinyl acetate, water-soluble cellulose ester, and silicone rubber are excellent. The binder is preferably in the form of powder or particles in order to uniformly dry mix it with a powdery or granular 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 is increased. Therefore, the particle size of the binder is preferably smaller than the particle size of the powdery or granular desiccant.

Although increasing the mixing ratio of the binder increases the mechanical strength of the aggregate, it also increases the ratio of the interface of the desiccant coated with the binder. Therefore, the mixing ratio of the binder is 50 wt% of the desiccant. It is preferably 50 parts by weight or less (50% or less of the mixture weight) with respect to parts. When the amount of the binder is 20 parts by weight or less (80% by weight or less of the mixture weight) relative to 80 parts by weight of the desiccant, the adsorbing / desorbing performance of the assembly becomes particularly good. More preferably. However, just because the mixing ratio of the binder slightly exceeds 20%, the adsorption / desorption performance of the aggregate does not suddenly deteriorate.

[0013]

【Example】

 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 sectional view, and FIG. 1B is a sectional view taken along the line AA of FIG.

The dew condensation preventing double glazing 10 of the first embodiment is a substantially bar-shaped dry glass having a quadrangular cross section, which is arranged between the two glass plates 11 and 12 and between the two glass plates 11 and 12 along the outer periphery thereof. And agent 13. The portion surrounded by the two sheet glasses 11 and 12 and the substantially rod-shaped desiccant 13 is the air layer 14. Examples of the substantially rod-shaped desiccant 13 include, for example, a substantially rod-shaped cardboard impregnated with an aqueous sodium chloride solution and dried, or powdered or granular silica gel or zeolite bonded with a binder to form a substantially rod-shaped desiccant. It can be used. Regarding the former, it is also possible to use magnesium chloride, calcium chloride, quick lime, slaked lime, etc. in addition to sodium chloride to prepare a substantially rod-shaped drying agent. The latter method is preferable in consideration of the adsorption capacity and the like.

According to the anti-condensation double-layer glass 10, the water contained in the air layer 14 is adsorbed by the substantially rod-shaped desiccant 13, so that the water in the air layer causes dew condensation or clouding due to temperature change. It never happens. In addition, since no powdery or granular desiccant is used, the desiccant 13 does not spill during the manufacturing process and is easy to handle. Therefore, there is an effect that workability at the time of manufacturing is improved, and eventually cost can be reduced.

In this double-layer glass 10 for preventing dew condensation, a substantially rod-shaped desiccant 13 is used instead of a spacer. In this case, a silica gel aggregate in which powdery or granular silica gel is bonded with silicon rubber as a binder is used. For example, the elasticity of the silicone rubber also acts as a cushion or a seal. In addition, a seal member such as rubber or resin may be installed between the both glass plates 11 and 12. Further, the cross section of the substantially rod-shaped desiccant 13 may be circular, elliptical, polygonal, donut-shaped, etc., as well as quadrangular.

2A and 2B are explanatory views of the second embodiment. FIG. 2A is a partial sectional view, and FIG. 2B is a sectional view taken along line BB in FIG. 2A. The dew condensation preventing double glazing 20 of the second embodiment is the same as the dew condensation preventing double glazing 10 of the first embodiment except that a substantially rod-shaped desiccant 23 is held in the case 25. The case 25 is made of metallic aluminum and is arranged along the outer peripheries of both plate glasses 21 and 22. Further, a slit 25a as a communication portion is provided on the air layer 24 side of the case 25, and the desiccant 23 can contact the moisture contained in the air layer 24 through this slit 25a. In the second embodiment, since the desiccant 23 is held in the case 25, it is possible to use a weak rod-shaped desiccant. Other functions and effects are the same as those in the first embodiment, and therefore the description thereof is omitted. A seal member such as rubber or resin may be provided between the case 25 and the plate glasses 21 and 22. Further, a seal member may be separately installed between the both glass plates 21 and 22. Further, the case 25 itself may be formed by a seal member.

3A and 3B are explanatory views of the third embodiment. FIG. 3A is a partial sectional view and FIG. 3B is a sectional view taken along line CC of FIG. 3A. The dew condensation preventing double glazing 30 of the third embodiment is the same as that of the second embodiment except that a plurality of plate-shaped desiccants 33 are held in the case 25, and therefore the same constituent elements are used. Are given the same reference numerals. Further, the function and effect of the third embodiment are the same as those of the second embodiment, so that the description thereof will be omitted.

4A and 4B are explanatory views of the fourth embodiment. FIG. 4A is a partial sectional view, and FIG. 4B is a sectional view taken along line DD of FIG. 4A. The double glazing for preventing dew condensation of the fourth embodiment is the same as that of the second embodiment except that a plurality of rod-shaped desiccants 43 having a circular cross section are held in the case 25. Therefore, the same components are the same. Is attached. Further, the function and effect of the fourth embodiment are the same as those of the second embodiment, so that the description thereof will be omitted.

The substantially rod-shaped or plate-shaped desiccant 13, 23, 33, 43 used in each of the above-mentioned examples is an aggregate in which powdery or granular silica gel, zeolite or the like is bonded via a binder. It is preferable that there is a region not covered with the binder. As an example, a production example of a silica gel aggregate will be described below.

100 parts by weight of powdered silica gel (100 mesh pass) and 10 parts by weight of powdered methyl cellulose (100 mesh pass) were put into a mixer and sufficiently stirred and mixed to obtain a mixture. Next, 60 parts by weight of ion-exchanged water was added to this mixture and kneaded with a three-roll kneader. The roll temperature during kneading was maintained at 10 to 15 ° C. Furthermore, the kneaded product obtained above was put into an extrusion molding machine and extruded while maintaining the temperature at 10 to 20 ° C. to form a strip. This belt-shaped material was subjected to preliminary drying at 60 ° C. for 10 minutes and main drying at 120 ° C. for 30 minutes to solidify to obtain a plate-shaped silica gel aggregate.

As a comparative example, the same type of silica gel as used in the production of plate-like silica gel was kneaded with an adhesive, molded, and then solidified to produce a plate-like silica gel aggregate similar to that of the example. The moisture absorption rates of the raw material silica gels of Examples and Comparative Examples and the silica gel aggregates of Examples and Comparative Examples were measured at relative humidity of 20%, 50%, and 90%, and the moisture absorption performances were compared. Met. In addition,

[0023]

[Equation 1]

[0024]

[Equation 2]

It is

[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 powdery silica gel which is the raw material, and the silica gel aggregates constituting the silica gel aggregates are only slightly deteriorated. It can be seen that the pores of the particles are not blocked. An explanatory diagram schematically comparing this silica gel aggregate with a conventional silica gel aggregate is shown in FIG.

If the desiccant 13, 23, 33, 43 is formed from this silica gel aggregate, the conventional powdery silica gel is used for the dew condensation preventing double glazings 10, 20, 30, 40 of each of the above embodiments. The effect is that the workability during the production of the double glazing for preventing dew condensation is improved while maintaining the almost same performance as in the case of the above.

Further, in the conventional anti-condensation double-glazing 60 shown in FIG. 6, powdery or granular desiccant 63 may be spilled from the slit 65 a provided in the case 65 during use, which may cause dew condensation. Although there is a disadvantage that the preventive double-glazing unit 60 has a bad appearance, such defects are eliminated by the second to fourth embodiments.

It is needless to say that the present invention is not limited to the above embodiments and can be implemented in various modes without departing from the spirit of the invention. For example, the desiccants 13, 23, 33, and 43 are arranged along the outer circumferences of the plate glasses 11, 12, 21, and 22, but the positions to be arranged may be within the air layers 14 and 24, and a part of the outer circumferences. May be Further, the air layers 14 and 24 of the double glazings 10, 20, 30, and 40 may be hermetically sealed, but may not be hermetically sealed, but may have insufficient inflow of outside air. Further, although the silica gel aggregate is composed of silica gel alone and is bound with a binder, the silica gel aggregate may be mixed with another desiccant such as zeolite and bound with a binder to form an aggregate. Is obtained.

[0031]

[Effect of device]

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

[Brief description of drawings]

FIG. 1 is an explanatory view of a first embodiment of the present invention, (a)
1A is a partial sectional view, and FIG. 1B is a sectional view taken along line AA of FIG.

FIG. 2 is an explanatory view of a second embodiment of the present invention, (a)
2A is a partial sectional view, and FIG. 2B is a sectional view taken along line BB in FIG.

FIG. 3 is an explanatory view of a third embodiment of the present invention, (a)
3A is a partial cross-sectional view, and FIG. 3B is a cross-sectional view taken along line CC of FIG.

FIG. 4 is an explanatory view of a fourth embodiment of the present invention, (a)
4A is a partial sectional view, and FIG. 4B is a sectional view taken along line DD of FIG.

5 is an explanatory view schematically comparing a silica gel aggregate suitable for the present invention with a conventional silica gel aggregate, and FIG. 1 (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.
FIG. 1 is a schematic view of a silica gel aggregate suitable for the present invention.

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

[Explanation of symbols]

 10, 20, 30, 40 ... Multi-layer glass for preventing dew condensation, 11, 12, 21, 22 ... Plate glass, 13, 23, 33, 43 ... Desiccant, 14, 24 ... Air layer , 25 ... Case, 25a ... Slit

Claims (5)

[Scope of utility model registration request] 1. A dew condensation preventing double-layer glass having a gas layer provided between two sheet glasses, wherein a substantially rod-shaped or plate-shaped desiccant is arranged in the gas layer of the sheet glass. Double glazing for prevention. 2. The multi-layered dew condensation preventing layer according to claim 1, wherein the substantially rod-shaped or plate-shaped desiccant is arranged in a case having a communicating portion that communicates with the gas layer. Glass. 3. The dew condensation preventing agent according to claim 1, wherein the substantially rod-shaped or plate-shaped desiccant is an assembly in which powdery or granular desiccants are bonded via a binder. Double glazing. 4. The double glazing for preventing dew condensation according to claim 3, wherein the powdery or granular desiccant contains at least powdery or granular silica gel. 5. The double glazing for dew condensation prevention according to claim 3, wherein a region not covered with the binder is present on the surface of the aggregate.