JP4360707B2 - Double glazed windows - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-layer glass window having a high heat insulating effect.
[0002]
[Prior art]
From the viewpoint that houses with good heat need to insulate not only walls and floors but also windows, the glazing has become an era of double glazing. In Europe and the United States, it is said that double glazing is becoming common sense. On the other hand, more and more houses are being built, and recently, those with a useful life of 60 years or more are increasing. Double-glazed glass windows have been adopted in such ultra-long-term durable houses.
[0003]
As shown in FIGS. 3 and 4, a conventional multi-layer glass window has a frame material 53 around an air layer 52 sandwiched between two transparent glasses 51. The frame member is composed of a metal spacer 54 for keeping the distance between the two sheets of glass and seal members 55 and 56 for blocking the air layer from outside air. The spacer 54 is a columnar body having a space inside, and a granular desiccant 57 such as silica gel is accommodated in this space. Further, a small hole 58 is formed on the air layer side of the spacer 54 so that the function of the desiccant 57 is easily performed. The role of the desiccant 57 is to keep the humidity in the air layer low and prevent the whitening phenomenon on the inner surface of the glass.
[0004]
[Problems to be solved by the invention]
However, when this double-glazed window is adopted in the above-mentioned ultra-long-term durable house, the humidity of the air layer gradually increases, and eventually the whitening phenomenon occurs in the double-glazed glass, and the double-glazed glass must be replaced. There is a high possibility of disappearing. The whitening phenomenon is one of the glass deterioration phenomena, and is also called whitish because the surface of the glass changes due to moisture and becomes whitish. Whitening can be wiped off with a cloth or the like, but the air layer of the double-glazed glass window cannot be wiped back because of its structure.
[0005]
An object of the present invention is to obtain a double glazing window capable of preventing the whitening phenomenon in the double glazing window.
[0006]
[Means for Solving the Problems]
The present invention includes two transparent glasses, an air layer sandwiched between the two glasses, and a frame member for sealing the air layer provided on the entire periphery of the air layer, It is a multi-layer glass window that is made of a desiccant that absorbs moisture in the air layer by being put in the frame material, and is provided with humidity detecting means on the lower surface of the frame material above the air layer when attached to the window. In other words, it is possible to know that the humidity of the air layer in the double-glazed window has increased before the whitening phenomenon occurs, so it is possible to cause the whitening phenomenon permanently by replacing or adding a desiccant before the whitening phenomenon occurs. Absent.
[0007]
In the double-layer glass window, wherein the frame member includes a spacer for maintaining a distance of the two glass, and a seal member for blocking the air layer and outside air, the spacer, the inside becomes a space And a small hole is formed on the air layer side, the desiccant is contained in the space, and the humidity detecting means is attached to the lower surface of the spacer located above the air layer. preferable.
[0008]
The installation location of the humidity detecting means may be a spacer above the air layer that can be seen from the outside or a glass surface. In such a place, the detection means does not always receive sunlight, and the detection means can be prevented from deteriorating. Moreover, since moisture tends to accumulate upward, an increase in humidity can be reliably detected. The humidity detecting means may be one that changes its color due to a chemical change due to a change in humidity, or one that changes its shape, as long as it has a color and size that can be judged by a resident from time to time. Based on this discoloration and change, it is determined that a whitening phenomenon will occur soon, and the desiccant may be added or replaced.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of the present invention as viewed from below, FIG. 2 is an enlarged view of the humidity detecting means portion of FIG. 1, and shows three embodiments, and FIG. FIG. 4 is an enlarged view for explaining the frame material of FIG. 3.
[0010]
As shown in FIGS. 1 and 2, the structure of the multi-layer glass window of the present invention is provided with a frame member 3 around an air layer 2 sandwiched between two transparent glasses 1. The frame material is composed of a metal spacer 4 for keeping the distance between the two glass sheets and seal materials 5 and 6 for blocking the air layer 2 from the outside air. The spacer 4 is a columnar body having a space inside, and a granular desiccant 7 such as silica gel is accommodated in this space. Further, a small hole (not shown) is formed on the air layer side of the spacer 4 so that the function of the desiccant 7 is easily performed. The role of the desiccant 7 is to keep the humidity in the air layer low and prevent the whitening phenomenon of the glass inner surface. The humidity detecting means 10 is attached to the lower surface of the spacer 4 above the air layer 2.
[0011]
When the humidity detecting means 10 is mounted above the air layer 2, it does not receive sunlight directly, and since water vapor is likely to accumulate on the air layer 2, the upper part can be detected reliably and early, and is always conspicuous. It is preferable for reasons such as not being present. The thickness of the glass 1 of the multilayer glass window of the present invention is 3 to 12 mm, and the thickness of the air layer 2 is 2 to 15 mm. The spacer 4 of the frame 3 is made of aluminum or steel, and a small hole is provided on the air layer 2 side. The small holes are made smaller than the particle diameter of the desiccant silica gel contained in the spacers, and are sized to easily absorb moisture in the air layer 2. The sealing material 5 is a polysulfide-based sealing material that blocks external droplets (moisture), maintains the glass interval together with the spacers 4, and is firmly bonded to the glass. The sealing material 6 is a butyl sealant and is used to block the air layer 2 and the outside air.
[0012]
A specific example of the humidity detecting means 10 is shown in FIG. FIG. 2 is a perspective view of the state in which the humidity detectors 11, 12, and 13 are attached to the lower surface of the spacer 4 as viewed from below. The humidity detectors 11 and 12 have shapes that change due to changes in humidity, and the humidity detector 13 has a color that changes due to changes in humidity. In the figure, A1, B1, and C1 indicate a state where the air layer 2 is in a normal humidity, and in the figure, A2, B2, and C2 indicate a state when the humidity is high. As examples of the shape change, paper A2 is an example of slackening due to expansion when the humidity becomes high, and B2 is a bent example. Examples of the color change include those caused by discoloration and blurring, and those in which the colored material becomes transparent.
[0013]
By providing such a humidity detection means, it is possible to know that the humidity of the air layer 2 in the double glazing window has increased before the whitening phenomenon occurs. By adding, it is possible to prevent the whitening phenomenon from occurring forever. In addition, the desiccant 7 can be replaced or added by drilling a hole in the frame material 3 of the multi-layer glass window from the outside, removing unnecessary desiccant, and injecting new desiccant.
[0014]
【The invention's effect】
Since the multilayer glass window of the present invention can easily determine the humidity increase before the whitening phenomenon accompanying the humidity increase of the air layer occurs, the multilayer glass window can be obtained by replacing or adding a desiccant in the air layer. Can prolong life. That is, the work is simpler and less expensive than replacing the double-glazed window after the whitening phenomenon occurs.
[Brief description of the drawings]
FIG. 1 is a perspective view of an entire embodiment of the present invention as viewed from below.
FIG. 2 is an enlarged view of the humidity detecting means portion of FIG. 1, showing three examples.
FIG. 3 is a perspective view showing a structure of a conventional multi-layer glass window.
4 is an enlarged view for explaining the frame member of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Glass 2 Air layer 3 Frame material 4 Spacer 5 Seal material 6 Seal material 7 Desiccant 10 Humidity detection means 11 Humidity detection means 12 Humidity detection means 13 Humidity detection means 51 Glass 52 Air layer 53 Frame material 54 Spacer 55 Seal material 56 Seal Material 57 Desiccant 58 Small hole

Claims (2)

Two transparent glasses,
An air layer sandwiched between the two pieces of the glass;
A frame member for sealing the air layer provided on the entire periphery of the air layer;
A desiccant that is put in the frame material and absorbs moisture in the air layer;
A multi-layer glass window, characterized in that a humidity detecting means is provided on the lower surface of the frame material above the air layer when attached to the window. The frame member includes a spacer for maintaining a distance of the two glass, and a seal member for blocking the air layer and outside air,
The spacer has a space inside and is provided with a small hole on the air layer side, and the desiccant is contained in the space.
The multilayer glass window according to claim 1, wherein the humidity detecting unit is attached to a lower surface of a spacer located above the air layer.

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