JP2020172849A - window - Google Patents

Abstract

To provide a window that can reduce heat coming in and out through the window and reduce the heating and cooling load.SOLUTION: The window includes an outer glass 6, an inner partition body 12, and an outside air inlet 3. The outside air inlet 3 introduces outside air into the lower part of an intermediate layer 4 between the outer glass 6 and the inner partition body 12. In winter, heat that escapes from the inner partition body 12 is recovered, and in summer, cold heat in the room that escapes from the inner partition body 12 is recovered by flowing outside air from the bottom to the top along the outer surface of the inner partition body 12, and then flowing it into the room by means for pulling outside air into the room.SELECTED DRAWING: Figure 1

Description

The present invention relates to a window that can reduce heat inflow and outflow while ventilating.

The indoor environment of the building was controlled by air-conditioning equipment, but there was a need for economically superior ones because of the large amount of heat coming in and out of the windows and the cost of electricity.

In view of the above-mentioned circumstances, an object of the present invention is to provide a window capable of reducing heat inflow and outflow from the window and suppressing a heating / cooling load.

In order to achieve the above object, the window according to the invention according to claim 1 includes an outer glass, an inner partition and an outside air inlet, and the outside air inlet is the lower part of the intermediate layer between the outer glass and the inner partition. By means of pulling the outside air into the room, the outside air is flowed from the bottom to the top along the outer surface of the inner partition and then into the room to release the heat that escapes from the inner partition in winter. It is characterized by recovering and recovering the cold heat in the room that escapes from the inner partition in summer.

The window according to the invention according to claim 1 includes an outer glass, an inner partition, and an outside air inlet, and the outside air inlet introduces outside air to the lower part of an intermediate layer between the outer glass and the inner partition. By pulling the outside air into the room, the outside air flows from the bottom to the top along the outer surface of the inner partition, and then flows into the room to recover the heat that escapes from the inner partition in winter and the inner partition in summer. By recovering the cold heat in the room that escapes from the window, the heat in and out of the window can be reduced and the heating / cooling load can be suppressed.

It is a vertical sectional view which shows the 1st Embodiment of the window of this invention. It is a vertical sectional view which shows the 2nd Embodiment of the window of this invention. It is a schematic vertical sectional view of the window of Examples 1 and 2 and Comparative Example 1 used for calculation of a heating / cooling cost. It is a top view of a house used for calculation of heating and cooling costs.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment of a window of the present invention. This window is installed in the window opening of a building such as an office building, and is a double-glazed window including an outer window 1 installed on the outdoor side and an inner window 2 installed on the indoor side.

As shown in FIG. 1, the outer window 1 includes a frame 5 fixed to the opening of the building frame and an outer glass (double glazing) 6 housed in the frame 5. The lower frame 7 is provided with a constant air volume ventilation slit (outside air introduction port) 3. The constant air volume ventilation slit 3 has an outside air intake 8 provided in a horizontally long slit shape on the outdoor surface of the lower frame 7, and an outside air outlet 9 is provided on the upper surface of the lower frame 7 with an upward opening. An outside air flow path 10 is provided so as to connect the 8 and the outside air outlet 9. An air volume adjusting valve 11 is provided in the outside air flow path 10. When a strong wind occurs, the air volume adjusting valve 11 rotates due to the wind pressure to narrow the flow path, so that the air volume introduced into the room is constant regardless of the wind strength. Adjust the air volume so that

As shown in FIG. 1, the inner window 2 is held by an inner glass (inner partition) 12 made of double glazing, and a shoji 13 is placed on the upper part of the inner window 2 with the upper end as a fulcrum on the indoor side. It is provided to open. The area of the opening 14 formed by opening the shoji 13 to the indoor side is substantially the same as the area of the outside air intake port 8 and the outside air outlet 9 described above.

The room has a means for pulling the outside air such as a ventilation fan into the room, and by adjusting the room to a negative pressure by the ventilation fan or the like, as shown by the arrow in FIG. 1, the constant air volume ventilation slit 3 at the lower part of the outer window 1 After that, the outside air flows through the intermediate layer 4 between the outer window and the inner window from the bottom to the top along the outer surface of the inner glass 12, and flows into the room through the opening 14 at the upper part of the inner window 2.

Next, the function of the main window will be described. Explaining the case of winter, the cold outside air from the constant air volume ventilation slit 3 flows out upward because the outside air outlet 9 is provided toward the inner circumference side, and then flows out from the inner glass 12 of the inner window 2. It is warmed by transmitting the heat in the room, rises along the outdoor surface of the inner glass 12, and during this time, the heat that escapes from the inner glass 12 to the outside is recovered by the flow of air. Further, when the window receives solar radiation, the solar heat can be acquired while the intermediate layer 4 flows along the outer surface of the inner glass 12 in this way. After that, the warmed outside air flows into the room through the opening 14 at the upper part of the inner window 2. By taking in the warmed outside air into the room, the recovered heat can be returned to the room.
In this way, the outside air flows from the bottom to the top along the outer surface of the inner glass 12 in the intermediate layer 4, so that the solar heat can be acquired and the heat escaping from the inner glass 12 is recovered by the air flow. By returning it to the room, the loss of heat from the room to the outside is reduced, which hinders the heat transfer from the indoor side to the outdoor side, which is the direction opposite to the direction in which the air flows, and provides heat insulation. Since the outside air is warmed and introduced indoors, the heating load can be suppressed. When the main window is provided in the entire building, the heating load can be reduced as compared with the case where the general window is provided. Also, people in the room do not feel the cold wind.

Next, the case of summer will be described. As in winter, the outside air entering through the constant air volume ventilation slit 3 flows out upward because the outside air outlet 9 is provided toward the inner circumference side, and then inside. It rises along the outdoor surface of the inner glass 12 of the window 2, and during this time, the cold heat escaping from the inner glass 12 to the outside is recovered by the air flow. After that, the cooled outside air passes through the opening 14 at the upper part of the inner window 2 and flows out into the room. In this way, the cooling load can be suppressed by allowing the outside air to flow from the bottom to the top along the outer surface of the inner glass 12, cooling the outside air, and then introducing the outside air into the room. When the main window is provided in the entire building, the cooling load can be reduced as compared with the case where the general window is provided.

FIG. 2 shows a second embodiment of the window of the present invention. The main window is provided above the inner window 2 so that the shoji 13 opens inwardly with the lower end as a fulcrum. In this way, by opening the shoji 13 inward with the lower end as a fulcrum, the air rising along the outer surface of the inner glass 12 flows into the room with an upward flow, so that the air flows into the room. Comfort is improved because the air flows smoothly without resistance and the wind does not directly hit the people in the room.

The main window may be provided with an intermediate partition 17 that partitions the inside of the intermediate layer 4 between the outdoor side and the indoor side (see FIG. 3B), and the outside air outlet 9 may be provided on the indoor side of the intermediate partition 17. The intermediate partition 17 can be, for example, a roll screen or a blind.
By doing so, it is possible to prevent the outside air introduced from the constant air volume ventilation slit 3 from mixing with the outdoor air of the intermediate layer 4, and to recover the heat (hot heat in winter and cold heat in summer) from the inner window 2. Efficiency can be improved.

The results of calculating how much the heating and cooling costs can be reduced when the windows of the present invention are installed in a house are described below. For the calculation, a commercially available heating / cooling energy consumption calculation program is used to calculate the heat transmission coefficient of the window and the amount of electricity consumed by the air conditioner for heating / cooling, and the electricity charge (27 yen / kWh) is calculated from the amount of electricity. Was calculated. FIG. 4 is a plan view of the house used for the calculation, and has windows 15 in a total of 10 places, 5 places each on the 1st floor and 2nd floor, and lace curtains 16 are installed in 9 of the windows 15. It was decided to install it. The housing shall meet the 2016 energy saving standards, and the location of the housing shall be Tokyo. The window 15 is shown in Example 1 in which the intermediate partition 17 is not provided as shown in FIG. 3 (a), Example 2 in which the intermediate partition 17 is provided as shown in FIG. 3 (b), and FIG. 3 (c). As shown, three types of Comparative Example 1 which are merely double-glazed windows were used, and the amount of electric power when each window was installed was calculated. The calculation results are shown in Table 1.

As is clear from Table 1, when the window of Example 1 is installed, the heating / cooling cost can be reduced by 6% as compared with Comparative Example 1 which is a simple double-glazed window. Further, when the window of the second embodiment provided with the intermediate partition 17 is installed, the heating / cooling cost can be reduced by 8% as compared with the comparative example 1 which is a simple double-glazed window.

As described above, the main window includes an outer glass 6, an inner partition (inner glass) 12, and an outside air introduction port (constant air volume ventilation slit) 3, and the outside air introduction port 3 has an outer glass 6 and an inner partition. The outside air is introduced into the lower part of the intermediate layer 4 between the twelve, and the outside air is flowed from the bottom to the top along the outer surface of the inner partition body 12 by means of pulling the outside air into the room, and then flows into the room. By recovering the heat escaping from the inner partition 12 in winter and recovering the cold heat in the room escaping from the inner partition 12 in summer, the heat in and out from the window can be reduced and the heating / cooling load can be suppressed.
Since the outside airflow outlet (opening) 14 of the inner window 2 into the room is substantially the same size as the outside air introduction port 3, smooth ventilation can be performed.
Further, when the intermediate layer 4 has an intermediate partition 17 for partitioning the outdoor side and the indoor side, and the air outlet (outside air outlet) 9 of the outside air introduction port 3 is located on the indoor side of the intermediate partition 17, the outside air It is possible to prevent the outside air introduced from the introduction port 3 from mixing with the air outside the outdoor layer of the intermediate layer 4, and improve the efficiency of recovering hot and cold heat from the inner window 2.

The present invention is not limited to the embodiments described above. The structures of the outer window and the inner window can be changed as appropriate, and may be a sliding window, a hinged window, a fitting window, or the like. The frame of the outer window and the inner window may be integrally formed. Further, the sash is not limited to a double window composed of an outer window and an inner window, and may be a single sash in which an outer glass and an inner glass are installed in one frame.
The inner partition may be any one that partitions the intermediate layer and the indoor space, and may be a curtain, a roll screen, a shoji, or the like in addition to the inner glass.
The structure of the outside air inlet is arbitrary, and may be provided separately from the frame of the outer window. The means for pulling the outside air into the room is not limited to the ventilation fan, and may be composed of a duct connected to the outside airflow outlet of the inner window and a fan provided at the tip of the duct. It is also possible to provide a fan in the window. In the present invention, in addition to the case where an outer window and an inner window are newly installed in a newly constructed building, an inner window is added later to a window to which an existing single sash (outer window) is attached to form a double-glazed window. It can also be applied when doing.

1 Outer window 2 Inner window 3 Constant air volume ventilation slit (outside air inlet)
4 Intermediate layer 6 Outer glass 12 Inner glass (inner partition)

Claims (1)

It is provided with an outer glass, an inner partition, and an outside air inlet. The outside air inlet introduces the outside air to the lower part of the intermediate layer between the outer glass and the inner partition, and by means of pulling the outside air into the room, the outside air is introduced. By flowing from bottom to top along the outer surface of the inner partition and then flowing into the room, the heat that escapes from the inner partition is recovered in winter, and the cold heat in the room that escapes from the inner partition is recovered in summer. The characteristic window.

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