JP3398545B2 - Glass window with excellent heat insulation effect - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass window forming a part of a building such as a house or a building, and more particularly to a glass window having an excellent heat insulating effect.

[0002]

2. Description of the Related Art A glass window forming a part of a building such as a house or a building has a role of ensuring lighting and visibility.
If the heat insulating property is poor, heat energy is likely to flow through and the living performance will be deteriorated. Therefore, it is desired to have excellent heat insulating property. For this reason, particularly in cold regions and the like, there is used a glass window having a so-called paired glass structure in which two glasses are stacked and an air layer as a heat insulating layer is formed between them in order to improve heat insulating properties.

[0003]

However, since the glass window having the paired glass structure uses two pieces of glass, the amount of glass used is large and the cost is high, and at the time of a disaster such as an earthquake. However, there is a drawback that the risk of an accident due to the scattering of glass shards in is also increased. Moreover, since it has no air permeability, there is a defect that when moisture or moisture enters the air layer in the glass, there is no escape route for the moisture or moisture, and chronic dew condensation occurs to cause fogging on the inner surface of the glass.

The present invention has been made in view of the above technical background, and has a simple structure and excellent heat insulating property.
Moreover, it is an object of the present invention to provide a glass window that does not cause chronic dew condensation due to moisture or humidity.

[0005]

In order to achieve the above object, the present invention has an air layer formed by arranging a mesh member in the vicinity of a glass portion of a glass window because of its high heat insulating property. It was made based on the knowledge that it exhibits an excellent heat insulating effect.

That is, according to the present invention, a frame portion, a plate-shaped glass portion whose peripheral edge is supported by the frame portion and shields an opening in the frame portion, and a parallel shape with a distance from the glass portion. And a mesh member disposed opposite to each other, and an air layer having a sealed peripheral edge is formed between the glass portion and the mesh member.
And the edge member (3a) is provided on the periphery of the mesh member (3).
At the same time, the edge member (3a) is attached to the frame (1).
By fitting inside the inner peripheral part, the air layer (4) is
The gist is a glass window having an excellent heat insulating effect, which is characterized by being formed .

Due to the presence of such a mesh member, the air in the air layer is suppressed from escaping from the mesh member and stays in the air layer, resulting in an excellent heat insulating effect. Therefore, the amount of glass used is smaller than that of a paired glass type window in which two glass portions are formed, and a simple structure in which an inexpensive net-like member is added is provided, and the heat insulating property is excellent. On the other hand, since the mesh member has air permeability, it can be easily evaporated even when moisture or humidity enters the air layer between the glass portion and the mesh member. Further, since the mesh member is provided in the vicinity of the glass portion, even if the glass fragments are scattered during a disaster such as an earthquake, the mesh member functions as a protective net and the glass fragments can be reliably received.

Further, in the above, the thickness of the air layer is 30
When it is not more than mm, a particularly excellent heat insulating effect can be exhibited.

When the porosity of the net-like member is defined to be 60 to 90%, the light-transmitting property is ensured and the air-permeable member has both good air permeability and heat insulating property.

Moreover, along with the edge member is provided on the periphery of the net-like member, the said edge member, by fitting the inner peripheral portion of the frame portion, because the air layer is formed, the existing absence of the mesh member The glass window can then be easily retrofitted to the window of the invention.

[0011]

1 to 3 show one embodiment of a glass window according to the present invention. In these figures, (1) is a rectangular frame portion made of a wooden or metal sash, and (2) is a peripheral edge portion fitted into the frame portion to shield the inner opening of the frame portion (1). It is a plate-shaped transparent glass part. Reference numeral (3) is a net-like member that is arranged in parallel with the glass portion (2) on the outer side (outside air side) in the thickness direction of the glass portion (2). On the periphery of this mesh member,
Edge member (3a) having a predetermined thickness and made of an elastic body such as hard rubber
And the size of the mesh member (3) including the outer peripheral surface of the edge member (3a) is set to be substantially equal to or slightly larger than the space surrounded by the frame portion (1). Then, the edge member (3a) is elastically fitted inside the inner peripheral portion of the frame portion (1), which is generally referred to as "indentation", until the end face on the glass portion side is brought into contact with the glass portion surface. As a result, the glass portion (2) and the mesh member (3) are opposed to each other at a distance corresponding to the thickness of the edge member (3a), and the glass portion (2) and the mesh member (3) are opposed to each other. ) And are integrally provided on the frame (1). Therefore, an air layer (4) of a predetermined thickness is formed between the glass part (2) and the mesh member (3), the peripheral part of which is sealed by the frame part (1).

The mesh member (3) is for ensuring the heat insulating property of the air layer (4) without impairing the air permeability. That is, due to the presence of the mesh member (3), the air in the air layer (4) is suppressed from escaping from the mesh member (3), and stays in the air layer (4) having a closed peripheral edge, so that the heat insulating effect is achieved. Exert. Thus, the thickness of the air layer (4), in other words, the distance L between the glass part (2) and the mesh member (3) is 30 m.
If it exceeds m, the heat insulating effect will decrease, so the glass part (2)
The distance L between the mesh member (3) and the mesh member (3) is preferably set to 30 mm or less. In particular, it is preferable to set it to 20 mm or less.
On the other hand, even if the glass part (2) and the mesh member (3) are too close to each other, the thickness of the air layer (4) becomes thin, so that the heat insulating effect decreases. Therefore, the distance between the glass part (2) and the mesh member (3) is preferably 5 mm or more, and most preferably 8 mm or more. In the illustrated embodiment, the thickness of the air layer (4) (the distance L between the glass portion (2) and the mesh member (3)) can be adjusted by changing the thickness of the edge member (3a). good.

Further, when the porosity of the mesh member (3), that is, the ratio of the void portion to the unit area of the mesh member (3) is large, the state becomes close to the same state as when the mesh member (3) does not exist, and ventilation is performed. But the adiabaticity decreases. On the other hand, when the porosity is small, the air layer (4) is in a closed state and the heat insulating property increases but the air permeability decreases. Therefore, in order to secure good heat insulation and air permeability, it is desirable to set the porosity of the mesh member (3) to 60 to 90%. By setting the porosity of the mesh member (3) to 60 to 90%,
Good translucency can also be secured. Most preferably, it is 80 to 90%.

In the present invention, the material of the mesh member (3) is not particularly limited, and a resin material such as polyvinyl chloride or a metal material such as stainless steel may be appropriately used. However, it is recommended to use a metal material such as stainless steel rather than a resin material such as polyvinyl chloride because a higher heat insulating effect can be obtained. The reason for this is presumed to be that the reflectance of radiant heat in the metal mesh member is higher than that of the resin mesh member.

The mesh shape of the mesh member (3) is not particularly limited. It may have a lattice shape, an oblique lattice shape, or another shape. However, since the incident angle of external light changes by changing the mesh shape or the cross-sectional shape of the fibers forming the mesh, the solar radiation shielding effect can be adjusted. Therefore, the mesh shape and the fiber cross-sectional shape may be set so that the desired solar radiation shielding state is achieved.

In the embodiment shown in FIGS. 1 to 3, the mesh member (3) is arranged outside the glass portion (2), that is, on the outside air side, but inside the glass portion (2), that is, the chamber. It may be placed inside. Further, although the case where one net-like member (3) is provided is shown, two or more net-like members (3) may be arranged in parallel with the glass portion (2).

Further, an edge member (3a) is provided on the peripheral portion of the mesh member (3), and the edge member (3a) is fitted inside the inner peripheral portion of the frame portion (1) to thereby form the air layer (4). However, the peripheral edge of the mesh member (3) may be integrally fixed to the frame (1). However, the edge member (3
By adopting a configuration in which a) is fitted inside the inner peripheral portion of the frame portion (1), an existing glass window can be easily modified into the glass window of the present invention, and the thickness of the edge member (3a) can be changed. There is an advantage that the thickness of the air layer (4) can be freely and easily adjusted by changing

[0018]

EXAMPLE The following experiment was conducted to confirm the effect of the present invention.

That is, first, an experimental apparatus as shown in FIG. 4 was manufactured. In FIG. 4, (11) is a heating box and (12) is a protective box. The heating box (11) is made up of 580 by heat insulation.
mm × width 580 mm × height 1800 mm. Then, on one side of the heating box (11), width 450 mm x height 1
An opening (13) of 800 mm is provided, and this opening (1
The glass plate (14) alone or the glass plate (14) and the mesh member (15) were attached in parallel with the glass plate inside so as to close 3). Further, the inside of the heating box (11) was heated by the heater (16) of 200 W, and the temperature inside the entire box was made uniform by the fan (17). Also,
Plywood was attached to the five surfaces other than the inner opening to ensure sufficient heat insulation.

On the other hand, the protection box (12) is a heating box (1
1) It is for protecting the temperature inside so as not to change due to the influence of the outside air, and for the opening (1) of the heating box (11).
It has a shape capable of covering all but 3). Then, the heating box (11) is placed on the table (18) to be housed and covered in the protection box (12), and the inside of the protection box (12) is covered by the 500 W heater (19) and the fans (20) and (21). Was set to the same temperature as the heating box (11).

(30) is a temperature controller, which is a heating box (1
When the temperature inside 1) and inside the protection box (12) rises, the temperature inside each box is maintained at about 36 ° C by automatically detecting this and shutting off the power to the heaters (16) (19). Play a role.

On the other hand, apart from the above boxes, about 22.5 ° C.
A low temperature chamber (not shown) maintained at the temperature of was prepared.

While preparing the above experimental apparatus, only the glass plate (14) is attached to the opening (13) in the heating box (11), or the glass plate (14) and the mesh member (1).
5) and the intervals between them are set to various values as shown in Table 1, and the temperature in the heating box (11) in each case and the heaters (16) (19) and fans (17) (at that time) are set. 20) The power consumption of the motor for (21) and the temperature in the low-pitched room were measured. As the glass plate (14), a transparent plate having a thickness of 5 mm was used. On the other hand, as the mesh member (15), one made of polyvinyl chloride resin and one made of stainless steel were used, and the porosity was set as shown in Table 1. The temperature was measured by using a thermocouple. And about power consumption, 1W = 0.86
The calorific value was converted by the conversion formula of kcal / h. The results are shown in Table 1.

[0024]

[Table 1] Next, using the above results, the heat transmission coefficient K (kcal / m
² h ° C.) and heat transmission resistance R (m ² h ° C./kcal) were determined. Here, the heat transmission coefficient is generally a value related to the material forming the shield, the thickness, the property of the surface thereof, the flow state of the air in contact with the wall, and the like. That is, the amount of heat Q (kcal / h) that flows through the shield in a unit time is determined by the temperature difference (θi−θ0) (° C) between the air on both sides of the shield and the surface area A (m ² ).
Proportional to. That is, it can be expressed by Q = K * ([theta] i- [theta] 0) * A. The reciprocal of K is the heat transmission resistance R, which is R = 1 / K in the equation.

In the above equation, Q, θi, and θ0 are the heat consumptions in Table 1 and the temperature in the heating box (11), respectively.
Substituting the temperature of the low greenhouse and substituting the area (0.45 × 1.8) of the opening (13) for A, the heat transmission coefficient K (kca
1 / m ² h ° C) and heat transmission resistance R (m ² h ° C / kca)
When l) was determined, it was as shown in Table 2.

[0026]

[Table 2] Further, regarding Sample Nos. 2 to 11 in Table 2, the relationship between the thickness of the air layer (the distance between the glass plate and the mesh member) and the heat transmission resistance is shown in a graph in FIG.

As can be seen from Table 2 and the graph of FIG.
Add 5 to 20 mesh members (15) to the glass plate (14).
It can be seen that an excellent heat insulating effect can be exhibited by arranging them at intervals of mm.

From this, the glass window according to the present invention is
It was confirmed that the excellent heat insulating effect can be expected.

[0029]

As described above, according to the present invention, the frame portion, the plate-shaped glass portion whose peripheral edge is supported by the frame portion and shields the opening in the frame portion, and the gap between the glass portion and the glass portion are provided. And a reticulated member arranged parallel to each other in a parallel manner, and an air layer having a sealed peripheral edge is formed between the glass portion and the reticulated member. It is possible to provide a glass window having an excellent heat insulating effect with a simple structure in which the amount of glass used is smaller than that of a paired glass type window in which two parts are formed and an inexpensive mesh member is added. Of course, since the mesh member has air permeability,
Even if moisture or humidity enters the air layer between the glass portion and the mesh member, it can be easily evaporated, and chronic fogging on the glass surface can be prevented. Moreover, since the mesh member is provided in the vicinity of the glass portion, even if the glass fragments are scattered in the event of a disaster such as an earthquake, the mesh member can function as a protective net and can reliably receive the glass fragments. It is possible to form a highly safe glass window that can prevent a wide range of scattering.

Further, when the thickness of the air layer is 30 mm or less, a particularly excellent heat insulating effect can be exhibited.

When the porosity of the net-like member is regulated to 60 to 90%, it can be said that it has both good air permeability and heat insulating property while ensuring translucency, and the above effect is more reliable. And it can be a glass window that can be effectively exhibited.

Further, along with the edge member is provided on the periphery of the net-like member, the said edge member, by fitting the inner peripheral portion of the frame portion, because the air layer is formed, the existing absence of the mesh member The glass window can be retrofitted into the window of the present invention by a very simple operation, and the scope of application of the present invention can be significantly expanded.

[Brief description of drawings]

FIG. 1 is a perspective view showing a glass window according to an embodiment of the present invention with a part thereof cut away.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing a state before the mesh member is assembled to the frame portion.

FIG. 4 shows an experimental apparatus in an example, (a)
Is a front sectional view, (b) is a side sectional view, and (C) is IV of (a).
It is a c-IVc line sectional view.

FIG. 5 is a graph showing experimental results in the example.

[Explanation of symbols]

1 ... frame 2 ... Glass part 3 ... Mesh member 3a ... Edge member 4 ... Air layer

Claims (3)

(57) [Claims] 1. A frame part (1), a plate-shaped glass part (2) having a peripheral edge supported by the frame part (1) and shielding an opening in the frame part, and the glass part (2). And an air layer (4) having a peripheral portion hermetically sealed between the glass portion (2) and the mesh member (3). edge member (3a) is provided on the periphery of the formed and, and mesh member (3)
In addition, the edge member (3a) is attached to the inner peripheral portion of the frame portion (1).
The air layer (4) is formed by fitting it inside.
A glass window with excellent heat insulation, which is characterized by being 2. The glass window excellent in heat insulation effect according to claim 1, wherein the thickness of the air layer (4) is 30 mm or less. 3. The porosity of the mesh member (3) is 60 to 90%.
The glass window excellent in the heat insulating effect according to claim 1 or 2.