JP4135944B2 - curtain wall - Google Patents

Description

  The present invention relates to a curtain wall.

Patent Document 1 discloses a curtain wall called a double skin curtain wall.
The above-mentioned curtain wall has an outer skin attached to the building frame as an outer skin, an indoor panel is attached to the building frame as an inner skin, and a space is formed between the outer skin and the inner skin, Outside air circulates in the space.
In this curtain wall, since the space between the outer skin and the inner skin serves as a heat insulating layer, it is possible to prevent the indoor temperature from being lowered by the outside air in winter.
On the other hand, in summer, it is possible to prevent the indoor temperature from rising by allowing outside air to pass through this space.

JP 2001-253734 A

  In the conventional curtain wall described above, since the outdoor panel and the indoor panel are attached to the building frame at the construction site of the building, it takes time to install the panel and the work efficiency is poor.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a curtain wall that can easily attach an indoor panel and an outdoor panel to a building frame.

In the first invention, an indoor side panel and an outdoor side panel are attached to the frame body, and an intermediate air layer is provided between the outdoor side panel and the indoor side panel. The lower ventilation port communicates with the outside of the room, and the upper part of the intermediate air layer communicates with the upper air vent to the outside of the room, and the outside air communicates with the intermediate air layer. A curtain wall unit approximately equal to the width of
The intermediate air layer is provided with a blind that allows a plurality of slats to be raised and lowered.
When the slat is lowered and the solar radiation is blocked, the uppermost slat is located below the upper vent,
This curtain wall unit is a curtain wall characterized in that a frame body of the curtain wall unit is attached across floor slabs adjacent to the top and bottom of a building frame.

  A second invention is a curtain wall according to the first invention, wherein the upper ventilation port has a structure for discharging the air in the intermediate air layer obliquely downward.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a louver provided with a plurality of louver blades inclined obliquely downward is provided at an upper portion of the frame body near the outdoor side, and an upper ventilation opening is provided. Form the
The curtain wall is characterized in that a blocking plate for preventing rainwater or the like from entering between the louver blades into the intermediate air layer is provided on the indoor side of the louver blade near the upper part.

According to the first aspect of the present invention, a curtain wall unit having an intermediate air layer is assembled by attaching an outdoor panel and an indoor panel to a frame body at a factory or the like, and the frame body is placed between floor slabs of a building frame. It can be installed by mounting over.
Therefore, the indoor side panel and the outdoor side panel can be easily attached to the building frame.

  In addition, since the width of the upper and lower ventilation openings is approximately equal to the width of the curtain wall unit, even if the expected size of the intermediate air layer is small, a large amount of air flows through the intermediate air layer. The function as can be satisfied. Therefore, since the expected width of the frame body of the curtain wall unit can be reduced, each frame material of the frame body can be formed as an integral aluminum extruded shape.

In summer, the sun can be blocked by blinds, and the generated heat can be exhausted from the upper vents by temperature differential ventilation, reducing the effect of solar radiation on the indoor environment.
In winter, blinds block sunlight and reduce the influence of external cold air by the greenhouse effect in the middle air layer.
Moreover, since the slat is not located behind the upper vent when the solar radiation is blocked by the blinds, the slat does not obstruct the air flow from the upper vent and the air flows smoothly from the upper vent. .

According to the invention of claim 2, since the air in the intermediate air layer is exhausted obliquely downward from the upper ventilation port, the air discharged from the upper ventilation port is intermediate air from the lower ventilation port of the upper curtain wall. Difficult to flow into the strata.
Therefore, high-temperature air heated in the intermediate air layer in summer is difficult to be introduced into the intermediate air layer of the upper curtain wall unit, and an increase in room temperature can be prevented.

According to the invention which concerns on Claim 3, an upper ventilation port can be comprised by attaching a louver, and the operation | work is easy.
In addition, rainwater or the like can be prevented from entering the intermediate air layer from between the louver blades closer to the upper part.

As shown in FIGS. 1, 2, and 3, a curtain wall is configured by attaching a plurality of curtain wall units 10 to a building housing 1 sequentially in the vertical and horizontal directions.
In the curtain wall unit 10, an outdoor panel 12 (outer skin) and an indoor panel 13 (inner skin) are attached to a frame 11, and an intermediate between the outdoor panel 12 and the indoor panel 13 is provided. It has an air layer 14. The curtain wall unit 10 has a lower ventilation port 15 at the bottom and an upper ventilation port 16 at the top.
The lower ventilation port 15 communicates the lower part of the intermediate air layer 14 to the outside of the room, and the upper ventilation port 16 communicates the upper part of the intermediate air layer 14 to the outside of the room.
The outdoor panel 12 is a wall that keeps sound insulation and windproof performance, and the indoor panel 13 is a wall that keeps performance such as heat insulation, water tightness, air tightness, fire resistance, etc. Outside air circulates.

Thereby, the intermediate air layer 14 has a role as a heat insulating layer, and can prevent the indoor temperature from being lowered by the outside air in winter.
In summer, outside air can pass through the intermediate air layer 14 to prevent the indoor temperature from rising.
That is, a double skin type curtain wall is formed.

A blind 17 is provided in the intermediate air layer 14 as shown in FIG.
This blind 17 blocks solar radiation in the summer and discharges the generated heat from the upper ventilation port 16 to the outside by temperature difference ventilation, thereby reducing the influence of solar radiation on the indoor environment.
In addition, the blind 17 blocks solar radiation in winter and reduces the influence of outdoor cold air by the greenhouse effect in the intermediate air layer 14, preferably the heat insulating effect of the panel 13 on the indoor side.

The curtain wall unit 10 includes a vision unit 10a and a spandrel unit 10b, and is mounted between the upper and lower floor slabs 2 of the building frame 1.
For example, the upper portion of the frame body 11 is attached to the upper floor slab 2 by a fastener 3 and attached, the lower portion of the frame body 11 is opposed to the outdoor side of the lower floor slab 2, and the upper curtain wall is attached. The lower part of the frame 11 of the unit 10 and the upper part of the frame 11 of the lower curtain wall unit 10 are connected so as not to move in the indoor exterior direction.
Since it is like this, the curtain wall unit 10 which has the intermediate | middle air layer 14 is assembled by attaching the outdoor panel 12 and the indoor panel 13 to the frame 11 in a factory etc., and conveys the curtain wall unit 10 to a construction site. The frame 11 can be attached to the floor slab 2 by connecting with the fastener 3.
Therefore, the indoor side panel 13 and the outdoor side panel 12 can be easily attached to the building housing 1.

The lower ventilation port 15 is formed over substantially the entire length of the curtain wall unit 10 in the width direction (left and right direction in FIG. 1), and a large amount of air smoothly flows through the lower ventilation port 15.
The upper ventilation port 16 is formed over substantially the entire length of the curtain wall unit 10 in the width direction (left and right direction in FIG. 1), and a large amount of air smoothly flows through the upper ventilation port 16.
Therefore, even if the dimension (probable dimension) of the intermediate air layer 14 in the indoor outside direction is small, a large amount of air circulates in the intermediate air layer 14 and satisfies the function as the double skin curtain wall described above. Can do.
Therefore, the expected width of the frame body 11 of the curtain wall unit 10 can be reduced to, for example, 400 mm or less, and each frame material constituting the frame body 11 can be formed as an integral aluminum extruded shape.

In the case described above, the upper ventilation port 16 preferably has a shape that discharges the air in the intermediate air layer 14 obliquely downward.
That is, as described above, when the widths of the lower ventilation port 15 and the upper ventilation port 16 are substantially equal to the width of the curtain wall unit 10, the upper ventilation port 16 of the lower curtain wall unit 10 in the curtain wall unit 10 adjacent to the upper and lower sides. Since the lower ventilation port 15 of the upper curtain wall unit 10 is located above, the air exhausted from the upper ventilation port 16 of the lower curtain wall unit 10 is intermediate from the lower ventilation port 15 of the upper curtain wall unit 10. Since it is easy to be introduced into the air layer 14 and high-temperature air heated in the intermediate air layer 14 of the lower curtain wall unit 10 is introduced into the intermediate air layer 14 of the upper curtain wall unit 10 in summer, It may not be possible to prevent a rise in room temperature.

  In order to prevent this, the air in the intermediate air layer 14 is discharged obliquely downward from the upper ventilation port 16, and the discharged air is discharged from the lower ventilation port 15 of the upper curtain wall unit 10 into the intermediate air layer 14. It was hard to be introduced. As will be described later, it may be difficult to introduce a blocking plate.

Next, the specific shape of each member will be described.
As shown in FIG. 1, the frame 11 is rectangular with an upper horizontal frame member 11a, a lower horizontal frame member 11b, and left and right vertical frame members 11c, and as shown in FIG. 2, between the left and right vertical frame members 11c. The outdoor intermediate horizontal frame member 11d is connected to the upper side near the outdoor side in FIG. 2, and the indoor intermediate horizontal frame member 11e is connected to the upper side near the indoor side between the left and right vertical frame members 11c.
The outdoor intermediate horizontal frame member 11d is located above the indoor intermediate horizontal frame member 11e.

As shown in FIGS. 4, 5, and 6, the above-described outdoor side extends over the outdoor side portion of the lower horizontal frame member 11 b, the outdoor intermediate horizontal frame member 11 d, and the outdoor side portions of the left and right vertical frame members 11 c. A panel 12, such as glass, is mounted.
As shown in FIGS. 4, 5, 6, and 7, an upper ventilation port 16 is formed between the outdoor side portion of the upper horizontal frame member 11 a and the outdoor intermediate horizontal frame member 11 d.
As shown in FIGS. 4, 5, 6, and 7, the fireproof panel that is the indoor side panel 13 is provided between the indoor side portion of the upper horizontal frame member 11 a and the indoor intermediate horizontal frame member 11 e. 13a is firmly and airtightly attached, and the above-described spandrel portion 10b is constituted by the fireproof panel 13a.
A face material 13b, which is the indoor side panel 13, spans between the indoor side portion of the lower horizontal frame material 11b and the indoor side intermediate horizontal frame material 11e. The face material 13b is firmly attached in a watertight and airtight manner. The above-mentioned vision part 10a is constituted by the part. That is, the face panel 13b and the fireproof panel 13a serve as the indoor panel 13.

The face material 13b can be opened indoors.
For example, as shown in FIGS. 4 and 6, an indoor vertical frame member 11f is attached across the indoor side portion of the lower horizontal frame member 11b and the indoor intermediate horizontal frame member 11e, and the indoor vertical frame member 11f A first frame portion 11g and a second frame portion 11h are formed by the indoor side intermediate horizontal frame member 11e and the indoor side portions of the left and right vertical frame members 11c.
The finding size of the first frame portion 11g is large, and the finding size of the second frame portion 11h is small. The shoji 18 is rotatably attached to the first frame portion 11g toward the indoor side, and the blind 17 and the like are maintained and inspected by rotating the shoji 18 to the indoor side and opening the first frame portion 11a. .
The ventilation door 19 is attached to the second frame portion 11h so as to be rotatable toward the indoor side, and the ventilation door 19 is rotated to the indoor side to communicate the intermediate air layer 14 with the room by the second frame portion 11b. Ventilate the room.

As shown in FIG. 4, the lower ventilation port 15 is substantially L-shaped, with the upper opening 15a opening in the intermediate air layer 14 facing upward and the lower opening 15b opening outside the room facing sideways.
The lower ventilation port 15 is formed in the lower horizontal frame member 11b. For example, the lower horizontal frame member 11b is formed of two members, and the lower ventilation port 15 is formed between the two members.
Specifically, the outdoor side member 20 and the indoor side member 21 form the lower horizontal frame member 11b, the outdoor side member 20 is connected between the left and right vertical frame members 11c, and the indoor side member 21 is The vertical frame member 11c is connected to the indoor side, and the outdoor member 20 and the indoor member 21 are separated in the indoor outside direction, and a lower ventilation passage 22 is formed therebetween.
The lower ventilation passage 22 is substantially L-shaped, and a grille 23 is attached to the upper portion of the lower ventilation passage 22 over the outdoor member 20 and the indoor member 21.
A louver 24 for a lower ventilation port is attached to the lower part of the lower ventilation passage 22.
That is, the lower ventilation port 15 has a grille 23 in the upper opening 15a and a louver 24 for the lower ventilation port in the lower opening 15b.

The indoor side member 21 is substantially L-shaped with a vertical portion 21a and a horizontal portion 21b, and the outdoor member 20 is attached to face the vertical portion 21a. A lower ventilation passage 22 is formed by the substantially L-shaped outdoor side surface of the inner member 21.
And the grille 23 is attached over the vertical part 21 a of the outdoor side member 20 and the indoor side member 21. A louver 24 for the lower ventilation port is attached across the outdoor member 20 and the indoor member 21.
The outdoor side surface 25 of the indoor side member 21 is curved in an arc shape so that the air flow can be smoothly converted to approximately 90 degrees.

The louver 24 includes a plurality of louver blades 26, and the outdoor side ends 26 a of the louver blades 26 (outdoor side ends of the louvers 24) are substantially flush with the outdoor side surface of the curtain wall unit 10, preferably flush with each other. is there.
Specifically, as shown in FIGS. 4 and 8, the longitudinal bones 27 are fixed to a plurality of positions in the longitudinal direction at the indoor side end portions 26 b of the plurality of louver blades 26 to form a louver 24.
The upper and lower portions of the vertical bone 27 are fixed to the lower surface of the outdoor member 20 of the lower horizontal frame member 11b and the outdoor portion of the lateral portion 21b of the indoor side member 21 by attachment brackets 28, and the louvers 24 are attached. The outdoor end 26a of the louver blade 26 is substantially flush with the outdoor side of the curtain wall unit 10, for example, the outdoor end of the vertical frame member 11c.
In the left and right vertical frame members 11 c, the lower outer side of the lower horizontal frame member 11 b that protrudes downward from the outdoor member 20 is cut out, and air flows from the cutout portion 29.
Both left and right end portions of the outdoor portion of the louver blade 26 protrude from the inner side surface of the vertical frame member 11c to the side and are in contact with the notch 29 described above.
The lower horizontal frame member 11b may be integrated and the lower ventilation port 15 may be processed.

As shown in FIGS. 5 and 7, the upper ventilation port 16 is formed between the upper horizontal frame member 11a and the outdoor intermediate horizontal frame member 11d.
For example, the upper ventilation passage 30 is formed by the outdoor side portion of the upper horizontal frame member 11a, the outdoor intermediate horizontal frame member 11d, and the outdoor side portions of the left and right vertical frame members 11c.
A louver 31 for the upper ventilation port is attached to the upper ventilation passage 30 so that the air in the intermediate air layer 14 is discharged obliquely downward.
The louver 31 includes a plurality of louver blades 32, and the plurality of louver blades 32 are disposed obliquely downward at intervals in the vertical direction, and the outdoor end 32a of each louver blade 32 (the outdoor side of the louver 31). The end portion is substantially flush with the outdoor side surface of the curtain wall unit 10, preferably flush.
Specifically, the vertical bones 33 are fixed to a plurality of positions spaced in the longitudinal direction of the indoor side end portions 32 b of the plurality of louver blades 32, and the lower frame member 34 is fixed to the lower portions of the plurality of vertical bones 33. The louver 31 is provided. The upper portion of the vertical bone 33 is fixed to the upper horizontal frame member 11a by the mounting bracket 35, the lower frame member 34 is fixed to the outdoor intermediate horizontal frame member 11d, and the lower end portion of the vertical bone 33 is the outdoor intermediate portion. It is in contact with the horizontal frame member 11d.
The louver 31 is provided with a bird net 36. For example, the bird net 36 is attached over the indoor side end 32b of the lower louver blade 32 of the plurality of louver blades 32. The bird net 36 is attached between the vertical bones 33 adjacent to the left and right.
In the left and right vertical frame members 11c, the upper outdoor portion protruding upward from the outdoor intermediate horizontal member 11d is cut out, and air flows from the cut portion 37.
Both left and right end portions of the outdoor portion of each louver blade 32 protrude sideward from the inner surface of the vertical frame member 11c and are in contact with the aforementioned notch portion 37.

A blocking plate 38 is provided above the upper ventilation passage 30 so that rainwater or the like does not enter the intermediate air layer 14 from the upper portion of the upper ventilation passage 30.
The closing plate 38 is attached to the indoor side end 23b of the upper louver blade 32 in the plurality of louver blades 32, and the left and right ends of the closing plate 38 are on the left and right side surfaces of the vertical bone 33 adjacent to the left and right. The lower part of the closing plate 38 is in contact with the upper part of the above-described bird net 36.
As a result, the closing plate 38 is located on the indoor side of the upper louver blades 32 of the plurality of louver blades 32 and prevents rainwater and the like from entering the intermediate air layer 14 from between the upper louver blades 32.
That is, since a plurality of louver blades 32 are provided on the outdoor side near the upper part of the intermediate air layer 14 to improve the appearance, rainwater or the like is generated from between the louver blades 32 on the upper part (near the upper horizontal frame member 11a). Since it is easy to enter, the closing plate 38 is provided as described above to prevent intrusion of rainwater or the like.
As described above, the air exhausted from the upper ventilation port 16 of the lower curtain wall unit 10 is also introduced into the intermediate air layer 14 from the lower ventilation port 15 of the upper curtain wall unit 10 by providing the closing plate 38. It can be difficult to be introduced.

The lower vent louver 24 continues to the lower end of the curtain wall unit 10.
The upper ventilation port louver 31 continues to the upper end of the curtain wall unit 10.
As a result, the louver 24 for the lower vent of the upper curtain wall unit 10 and the louver 31 for the upper vent of the lower curtain wall unit 10 are continuous in the vertical direction, and the louver blades 26 and 32 are shown in FIG. As you can see, it looks like a single louver in the vertical direction, so it looks great.

Specifically, the lower side portion of the outdoor panel 12 is attached closer to the outdoor side of the outdoor member 20 of the lower horizontal frame member 11b, and the outdoor side portion of the indoor side member 21 (the outdoor side portion of the lateral portion 21b). ) Is closer to the indoor side than the panel 12 on the outdoor side, and the lower part of the vertical bone 27 is fixed to the outdoor side part of the indoor side member 21 with a mounting bracket 28, and the upper part of the vertical bone 27 is the lower surface of the outdoor side member 20. Is fixed to the middle in the indoor exterior direction with a mounting bracket 28.
As a result, the lowermost louver blade 26 of the louver 24 for the lower ventilation port protrudes to the outdoor side of the outdoor side end portion of the indoor side member 21 of the lower horizontal frame member 11b and is lower than the lower horizontal frame member 11b. The louver 24 for the lower ventilation port is continuous to the lower end of the curtain wall unit 10.

The outdoor side portion of the upper horizontal frame member 11a is substantially flush with the outdoor side surface of the outdoor intermediate horizontal frame member 11d, and the vertical bone 33 of the upper vent louver 31 is substantially flush with the outdoor side surface of the upper horizontal frame member 11a. On the other hand, the vertical bone 33 of the louver 31 for the upper ventilation port is in contact with the outdoor side surface of the upper horizontal frame member 11a, and the uppermost louver blade 32 is located on the outdoor side of the upper horizontal frame member 11a. The louver 31 continues to the upper end of the curtain wall unit 10.
The lowermost louver blade 26 of the lower ventilation port louver 24 of the upper curtain wall unit 10 and the uppermost louver blade 32 of the upper ventilation port louver 31 of the lower curtain wall unit 10 are continuous in the vertical direction. .
In such a case, since a gap is generated between the indoor side end portion 32b of the louver blade 32 and the outdoor side surface of the upper horizontal frame member 11a, the upper portion 38a of the closing plate 38 is formed into a bowl shape, The above-mentioned gap is closed by the upper part 38a having a shape.

As shown in FIG. 5, the blind 17 includes a large number of slats 17a and a head box 17b, and the slats 17a are moved up and down by a drive mechanism (not shown) provided in the head box 17b.
The head box 17b is attached to the uppermost portion of the intermediate air layer 14, for example, the inner surface of the upper horizontal frame member 11a, and the slat 17a is positioned on the back side of the louver 31 when the slat 17a is raised most as shown by a solid line in FIG. The louver 31 prevents the blind 17 from being viewed from the outside.

When the slat 17a is lowered to block solar radiation, the uppermost slat 17a is below the upper ventilation port 16, preferably below the outdoor intermediate horizontal frame member 11d, as indicated by phantom lines in FIG. It is supposed to be located at.
In this way, the string 17c for raising and lowering the slats 17a is positioned on the back side of the upper ventilation port 16, and the air in the intermediate air layer 14 is smoothly blocked without obstructing the air flow. Discharged from.
That is, when the slat 17a is located on the back surface of the upper ventilation port 16 (between the upper ventilation port 16 and the fireproof panel 13a), the air flow is inhibited by the slat 17a, and the air in the intermediate air layer 14 is discharged from the upper ventilation port 16. It will not be discharged smoothly. In particular, if the expected size of the intermediate air layer 14 is small as described above, the air flow is inhibited by the slats 17a.
In order to solve this problem, the uppermost slat 17 a was positioned below the upper ventilation port 16.

  As shown in FIGS. 5 and 7, the fastener 3 includes a primary fastener 3a and two secondary fasteners 3b that are fixed to a building housing 1 (floor slab 2), and the two secondary fasteners 3b are adjacent to each other on the left and right. The curtain wall unit 10 is fixed to the vertical frame member 11c.

It is a partial external view of a curtain wall. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is an expansion detailed longitudinal cross-sectional view of the vision part of a curtain wall unit. It is an expansion detailed longitudinal cross-sectional view of the spandrel part of a curtain wall unit. It is an expansion detailed cross-sectional view of the vision part of a curtain wall unit. It is an expansion detailed cross-sectional view of the spandrel part of a curtain wall unit. It is an expansion detailed cross-sectional view of the lower ventilation port part of a curtain wall unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Building frame, 2 ... Floor slab, 3 ... Fastener, 10 ... Curtain wall unit, 10a ... Vision part, 10b ... Spandrel part, 11 ... Frame, 11a ... Upper horizontal frame material, 11b ... Lower horizontal frame material, 11c ... left and right vertical frame member, 12 ... chamber outside the side of the panel, 13 ... chamber side of the panel, 14 ... intermediate air layer, 15 ... lower ventilation openings, 16 ... upper vent, 17 ... blind, 17a ... slats 31 ... louvers, 32 ... louver blades, 33 ... vertical bones, 34 ... blocking plates.

Claims (3)

An indoor side panel and an outdoor side panel are attached to the frame, and an intermediate air layer is provided between the outdoor side panel and the indoor side panel. A curtain in which the upper part of the intermediate air layer communicates with the outside through the upper ventilation port and the outside air communicates with the intermediate air layer. The width of the lower ventilation port and the upper ventilation port is substantially equal to the width of the curtain wall unit. As a wall unit,
The intermediate air layer is provided with a blind that allows a plurality of slats to be raised and lowered.
When the slat is lowered and the solar radiation is blocked, the uppermost slat is located below the upper vent,
A curtain wall characterized in that the frame of the curtain wall unit is mounted between floor slabs adjacent to the top and bottom of the building frame.   The curtain wall according to claim 1, wherein the upper ventilation port has a structure that discharges air in the intermediate air layer obliquely downward. At the top near the outdoor side of the frame body, a louver equipped with a plurality of louver blades inclined obliquely downward is provided in the vertical direction to form an upper ventilation port,
The curtain wall according to claim 1 or 2, wherein a blocking plate for preventing rainwater or the like from entering the intermediate air layer from between the louver blades is provided on the indoor side of the upper louver blade.

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