JPS60250187A - Sound blocking dual-layer glass - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to double glazing with excellent sound insulation properties.

[Background technology]

Inside the hollow layer of multi-layered glass, there is a bubble with a higher sound speed than in air.
It is known that when Sue is encapsulated, the upper hollow layer becomes thicker due to the refraction of sound waves, and the sound insulation properties are improved due to the phenomenon of total reflection of sound waves. That is, as shown in Figure 3, the sound velocity in the air (outside the double-glazed glass) is C1, and the double-glazed glass (3
) If the sound speed in the hollow layer (2) is 02, it is related to the incident angle θ1 of the incident sound shown in Figure 3, so the hollow layer (2)
If the sound speed inside the hollow layer (2) is large (CI<C2), θ1<θ2, and the path across the hollow layer (2) becomes longer.
The upper hollow layer (2) is apparently thick, and the sound waves incident on the lath (3) are totally reflected and cannot penetrate inside. However, for example, helium (the speed of sound in helium is 970 m
/5ec), it was difficult to seal in a gas with a high sound velocity such as hydrogen and prevent the gas from leaking out for a long time, and there were many problems in terms of technology and cost.

[Purpose of the invention]

The present invention was made in view of the drawbacks of the prior art described above, and its purpose is to improve the sound insulation properties of air as it is without enclosing a gas with a faster sound speed than air. Moreover, there is no need to completely seal air inside the hollow layer, and the purpose is to improve sound insulation.

[Disclosure of the invention]

The sound insulating double R glass of the present invention has high temperature air injected into the hollow layer (2) formed between the glass plates (1),
This made it possible to achieve the above objective.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in Figure 1, the shutter (4) installed inside the double-glazed glass (3)
)K so as to warm the air inside the hollow layer (2). The hollow layer (2) is formed by facing a pair of glass plates +1+, and the four circumferences of the hollow layer (2) are sealed with a sealing material (not shown), but it is not necessary to achieve complete airtightness. It's not even required. Hollow layer (2)
Inside, a filter-like screener (4) is pasted on the inner surface of the glass plate (1), and this screener (4) K
This allows electricity to be applied to warm the air within the hollow layer (2). The speed of sound in air depends on the temperature [speed of sound C=341+Q
, 6T (m/5ec), T: temperature (°C)], the higher the temperature, the higher the speed of sound, so the speed of sound is higher inside the hollow layer (2) where the air is warmed than outside.
It is possible to obtain the same sound insulation effect as in the case where a gas with a high sound velocity is sealed as shown in L.

Figure 2 shows an example of the present invention, in which hot air for hot air heating is guided into the hollow layer (2) through the introduction hole (5) of the glass plate (1). The temperature of the air is raised, and then hot air is sent into the room from the exhaust hole (6).

〔Effect of the invention〕

The present invention is constructed as described above, and is capable of increasing the sound velocity in the hollow layer, increasing the apparent thickness of the hollow layer, and increasing the sound insulation performance, and moreover, it is possible to increase the sound insulation performance by increasing the sound velocity within the hollow layer. It has the advantage that it does not require complete airtightness as is the case when encapsulating it in a hollow layer, is technically simple, and is inexpensive.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention, FIG. 2 is a perspective view showing the other side of the invention, and FIGS. 3 and 4 are explanatory views of the prior art. f+)...Glass plate, (2)...Hollow layer. Agent Patent Attorney Ishi 1) Chief Figure 1 Figure 3 Figure 2 Figure 4

Claims (1)

[Claims] Sound-insulating double-glazed glass characterized by having high-temperature air introduced into a hollow layer formed between fl glass plates.