Ventilation system
The ventilation device for high-rise buildings addresses the issue of fire spread by using heat-foaming materials to seal gaps within the ventilation system, effectively preventing heat transmission and suppressing fire spread.
Patent Information
- Application Number
- JP2021103825
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-06-23
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2041-06-23
AI Technical Summary
In high-rise buildings, conventional ventilation devices with metal frames and movable parts can transmit heat during a fire, potentially spreading the fire inside the building.
A ventilation device with a frame body, a movable flap, and heat-foaming materials provided along the opening, which foam to seal gaps and prevent heat transmission during a fire.
The ventilation device effectively suppresses the spread of fire by sealing gaps between the frame and the ventilation unit with foaming materials, preventing heat transmission and reducing the risk of fire spread within the building.
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Abstract
Description
[Technical field]
[0001] The present disclosure relates to a ventilation device. [Background technology]
[0002] Conventionally, fixed windows with fixed screens that do not open and close have been provided in high-rise apartment buildings, etc. For example, Patent Document 1 proposes a ventilation device in which a movable member is provided at an opening so that it can be adjusted to open and close.
[0003] In the ventilation device, the movable member moves to the open position during weak winds, creating a gap between the movable member and the opening to allow outside air to enter the room, and in the case of strong winds, the movable member moves to the closed position, blocking the opening so that outside air does not flow into the room. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] JP 2012-154032 A Summary of the Invention [Problem to be solved by the invention]
[0005] In the event of a fire, there is a problem in that the frame and movable parts made of metal materials are exposed to high temperatures, and the heat is transmitted inside the building, which can cause the fire to spread.
[0006] The present disclosure has been made in consideration of the above circumstances, and provides a ventilation device that can suppress the spread of fire in the event of a fire. [Means for solving the problem]
[0007] A ventilation device according to one aspect of the present disclosure includes a frame body having an opening penetrating in an indoor / outdoor direction, a movable member disposed in the opening and moving in the indoor / outdoor direction to open and close the opening, and a heating foaming material provided in the opening. The opening is formed between a pair of vertical frames arranged apart in the width direction, between an upper frame and a lower frame, over approximately the entire length, the vertical frames have a wall portion arranged along the indoor / outdoor direction facing the opening, and the heat-foaming material has a first heat-foaming material provided on each of the wall portions of the pair of vertical frames. . [Brief description of the drawings]
[0008] [Figure 1] FIG. 2 is a front view of the ventilation device according to the embodiment, seen from the outdoor side. [Diagram 2] FIG. 2 is a perspective view of a ventilation device according to an embodiment, seen from the outdoor side, showing a closed state. [Diagram 3] FIG. 2 is a perspective view of a ventilation device according to an embodiment, seen from the outdoor side, in an open state. [Figure 4] Cross-sectional view taken along line IV-IV in Figure 1. [Diagram 5] A front view of the guide rail and flap from the indoor side. [Figure 6] FIG. 4 is a diagram illustrating the configuration of a roller guide, as viewed from the width direction. [Figure 7] Front view of the flap from the indoor side. [Figure 8] A cross-sectional view of the guide rail and the flap along the indoor / outdoor direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0009] Hereinafter, a ventilation device according to an embodiment will be described with reference to the drawings. The ventilation device 100 according to this embodiment shown in FIG. 1 is installed in a high-rise building such as a high-rise apartment building or a high-rise building. As shown in FIG. 4, the ventilation device 100 includes a frame 1, an external cover 16, an internal cover 17, a ventilation unit 2A, a first heated foaming material 101, a second heated foaming material 102, and a third heated foaming material 103 (see FIG. 7).
[0010] The flap 4 is disposed within the opening S1 of the frame body 1 and is movable in the indoor / outdoor direction. The flap 4 moves between a closed state in which the flap 4 closes the opening S1 of the frame body 1, as shown by solid lines in Figures 2 and 4, and an open state in which the flap 4 opens the opening S1 of the frame body 1, as shown by two-dot chain lines in Figures 3 and 4.
[0011] In the following description, the direction connecting the outdoor side and the indoor side is referred to as the indoor-outdoor direction. Among the view directions perpendicular to the indoor-outdoor direction, the horizontal direction is referred to as the width direction, and the vertical direction is referred to as the up-down direction.
[0012] As shown in Fig. 1, the frame body 1 has an upper frame 11, a lower frame 12, and a pair of vertical frames 13. The upper frame 11 and the lower frame 12 extend in the width direction. The vertical frame 13 extends in the up-down direction. The vertical frame 13 connects an end of the upper frame 11 in the width direction to an end of the lower frame 12. The frame body 1 is formed, for example, from an aluminum profile.
[0013] 4, the vertical frame 13 has an outdoor side panel portion 131, an intermediate panel portion 132, an indoor side panel portion 133, a first wall portion 134, a second wall portion 135, a third wall portion 136, and a fourth wall portion 137. An opening portion S1 penetrating in the indoor / outdoor direction is formed between the pair of vertical frames 13. The opening portion S1 is formed over substantially the entire length between the upper frame 11 and the lower frame 12.
[0014] In the following description, the side toward the center of the opening S1 in the width direction may be referred to as the center side in the width direction, and the side away from the center of the opening S1 in the width direction may be referred to as the end side in the width direction.
[0015] The outdoor side plate portion 131, the intermediate plate portion 132, and the indoor side plate portion 133 are formed in a flat plate shape. The plate surface of the outdoor side plate portion 131, the plate surface of the intermediate plate portion 132, and the plate surface of the indoor side plate portion 133 face the indoor / outdoor direction. The outdoor side plate portion 131, the intermediate plate portion 132, and the indoor side plate portion 133 are arranged in this order from the outdoor side to the indoor side.
[0016] The first wall portion 134 extends from the end portion on the central side in the width direction of the outdoor side plate portion 131 toward the indoor side. The second wall portion 135 extends from the indoor end portion of the first wall portion 134 toward the end portion in the width direction as it approaches the indoor side. The third wall portion 136 extends from the indoor end portion of the second wall portion 135 toward the end portion in the width direction. The fourth wall portion 137 extends from the end portion on the end side in the width direction of the third wall portion 136 toward the indoor side. The fourth wall portion 137 is disposed along the indoor / outdoor direction. The indoor end portion of the fourth wall portion 137 is connected to the middle of the intermediate plate portion 132 in the width direction.
[0017] The first wall portion 134, the second wall portion 135, the third wall portion 136 and the fourth wall portion 137 are disposed facing the opening portion S1.
[0018] The external cover 16 is provided on the outdoor side of the opening S1. The external cover 16 is disposed over substantially the entire length of the opening S1 in the up-down direction.
[0019] The outer cover 16 has an outer cover main body portion 161 and a pair of outer cover side wall portions 163 .
[0020] The outer cover main body 161 is formed in a flat plate shape. The plate surface of the outer cover main body 161 faces the indoor / outdoor direction. The outer cover main body 161 is disposed on approximately the same plane as the outdoor side plate portions 131 of the vertical frames 13. The outer cover main body 161 is provided so as to close the space between the outdoor side plate portions 131 of the pair of vertical frames 13.
[0021] The outer cover main body 161 is formed with slits 162 penetrating in the indoor / outdoor direction. As shown in Fig. 1, the slits 162 are elongated in the width direction. A plurality of slits 162 are formed at intervals in the vertical direction.
[0022] As shown in Fig. 4, the outer cover side wall portions 163 are provided at both widthwise ends of the outer cover main body portion 161. The outer cover side wall portions 163 extend toward the indoor side. The outer cover side wall portions 163 are disposed along the first wall portion 134 and the second wall portion 135 of the vertical frame 13. The outer cover side wall portions 163 are fixed to either the first wall portion 134 or the second wall portion 135, or to the first wall portion 134 and the second wall portion 135.
[0023] The inner cover 17 has an inner cover main body 171. The inner cover main body 171 is formed in a flat plate shape. The plate surface of the inner cover main body 171 faces the indoor / outdoor direction. The inner cover main body 171 is disposed on approximately the same plane as the indoor side plate portions 133 of the vertical frames 13. The inner cover main body 171 is provided so as to close the space between the indoor side plate portions 133 of the pair of vertical frames 13. The inner cover main body 171 is formed with a cover opening 172 penetrating in the indoor / outdoor direction.
[0024] The ventilation unit 2A has a guide rail 2, a roller guide 3, and a flap 4. The flap 4 corresponds to a movable member.
[0025] The guide rail 2 is disposed on the indoor side of the opening S1. The guide rail 2 has a rail main body 21 and a pair of guide mounting walls 23. The guide rail 2 is disposed over substantially the entire length of the opening S1 in the up-down direction.
[0026] The rail main body 21 is formed in a flat plate shape. The plate surface of the rail main body 21 faces the indoor / outdoor direction. The length in the width direction of the rail main body 21 is longer than the distance between the intermediate plate portions 132 of the pair of vertical frames 13. The rail main body 21 is provided along the surface of the intermediate plate portion 132 facing the indoor side so as to close the space between the intermediate plate portions 132 of the pair of vertical frames 13.
[0027] A rail opening 22 is formed in the rail main body 21, penetrating in the indoor / outdoor direction. As shown in Fig. 5, the rail opening 22 has a shape that is long in the vertical direction. A plurality of rail openings 22 are formed at intervals in the vertical direction.
[0028] 4, the guide mounting wall portions 23 extend toward the outdoor side from both sides in the width direction of the rail main body portion 21. The guide mounting wall portions 23 are disposed along the indoor-outdoor direction.
[0029] As shown in Fig. 2, the roller guide 3 is fixed to the guide mounting wall portion 23 of the guide rail 2. Three roller guides 3 are provided. From the top, the roller guides 3 may be referred to as roller guide 3A, roller guide 3B, and roller guide 3C.
[0030] The roller guide 3 has a pair of support plate portions 31 and a connecting plate portion 33. The support plate portion 31 is fixed to the rail opening portion 22 of the guide rail 2. The support plate portion 31 is formed in a flat plate shape. The plate surface of the support plate portion 31 faces the width direction. The connecting plate portion 33 connects the outdoor side ends of the pair of support plate portions 31 to each other.
[0031] The support plate portion 31 of the roller guide 3A is referred to as the support plate portion 31A. The support plate portion 31A is formed with a guide hole 32A penetrating in the plate thickness direction of the support plate portion 31A. As shown in FIG. 6, the guide hole 32A of the roller guide 3A is formed from the lower end portion of the support plate portion 31A toward the upper side. The guide hole 32A is formed by a lower hole 32a at the lower portion, an upper hole 32b at the upper portion, and an intermediate hole 32c between the lower hole 32a and the upper hole 32b. The width A1 of the lower hole 32a is wider than the width A2 of the upper hole 32b. The width of the intermediate hole 32c gradually narrows toward the upper portion. A roller 46, which will be described later, is disposed in the guide hole 32A.
[0032] As shown in Fig. 2, the support plate 31 of the roller guide 3B is referred to as the support plate 31B. The support plate 31B is formed with a guide hole 32B penetrating in the plate thickness direction of the support plate 31B. The guide hole 32B of the roller guide 3B is formed downward from the upper end of the support plate 31B. The lower part of the guide hole 32B gradually extends slightly downward toward the outdoor side. A roller 46, which will be described later, is disposed in the guide hole 32B.
[0033] The flap 4 is provided on the outdoor side of the guide rail 2. The length of the flap 4 is slightly shorter than the overall vertical length of the guide rail 2. In Fig. 2, the configuration of the flap 4 is shown in a simplified schematic manner.
[0034] As shown in Fig. 7, the flap 4 has a flap main body 41 and a pair of caps 43. The flap main body 41 has a shape that is long in the vertical direction. The pair of caps 43 are provided at the upper and lower ends of the flap main body 41. The flap main body 41 is formed of a metal shaped material such as an aluminum alloy. The caps 43 are formed of a resin material.
[0035] As shown in Fig. 4, the flap main body 41 and the cap 43 are provided with an airtight material locking portion 42. In Fig. 4, the airtight material locking portion 42 provided on the flap main body 41 is shown.
[0036] The airtight material locking portion 42 provided on the flap main body 41 is provided at both ends in the width direction of the flap main body 41. The airtight material locking portion 42 has a pair of locking pieces 421. The pair of locking pieces 421 are arranged apart in the width direction.
[0037] In the flap main body 41, the airtight material locking portion 42 extends in the up-down direction. In the cap 43, the airtight material locking portion 42 provided on the flap main body 41 is provided in a substantially semicircular shape so as to be continuous. An airtight material 44 is attached to the pair of locking pieces 421. As shown in FIG. 7, the airtight material 44 is formed in a ring shape by the flap main body 41 and the cap 43. The airtight material 44 provided on the flap main body 41 is provided with wing portions 441 extending to the end sides in the width direction.
[0038] As shown in FIG. 4, when the flap 4 is in a closed state, the airtight material 44 abuts against the surface of the rail main body 21 of the guide rail 2 facing the outdoors.
[0039] A roller mounting member 45 is attached to the outdoor side of the flap 4. Rollers 46 are attached to both sides in the width direction of the roller mounting member 45. The rollers 46 are rod-shaped members extending in the width direction. As shown in Fig. 2, the rollers 46 are provided at two locations, the top of the flap 4 and the middle in the vertical direction.
[0040] The upper roller 46 is referred to as roller 46A. Roller 46A is disposed in guide hole 32A of roller guide 3A. Roller 46A is movable within guide hole 32A. As shown in Fig. 6, in the closed state, roller 46A is located in middle hole 32c of guide hole 32A.
[0041] The roller 46A has a roller body 461 and a roller cover 462. The roller body 461 is formed of a metal material. The roller cover 462 covers the outside of the roller body 461.
[0042] As shown in Fig. 2, the lower roller 46 is roller 46B. Roller 46B is disposed in guide hole 32B of roller guide 3B. Roller 46B is movable within guide hole 32B. In the closed state, roller 46B is located on the indoor side of the lower portion of guide hole 32B.
[0043] 5, a lock plate 47 is provided on the indoor surface of the flap 4. The lock plate 47 is provided at three positions on the flap 4 at intervals in the up-down direction.
[0044] The lock plate 47 has a plate main body portion 471 and a lock portion 472. The plate main body portion 471 is fixed to a surface of the flap 4 facing the indoor side. The lock portion 472 extends from the plate main body portion 471 to the indoor side.
[0045] 8, the locking portion 472 has a protruding portion 472a and an upward portion 472b. The protruding portion 472a extends toward the indoor side from the plate main body portion 471. The upward portion 472b extends upward from the indoor side end of the protruding portion 472a.
[0046] The upper lock plate 47 is referred to as lock plate 47A. In the closed state shown in Fig. 8, the protruding portion 472a of the lock plate 47A is located below the upper end portion 22u of the rail opening portion 22 of the guide rail 2. The upward facing portion 472b of the lock plate 47A is located above the upper end portion 22u.
[0047] 5, the lock plate 47 in the middle in the vertical direction is referred to as lock plate 47B. The lower lock plate 47 is referred to as lock plate 47C. In the closed state shown in FIG. 5, the protruding portion 472a of the lock plate 47B and the protruding portion 472a of the lock plate 47C abut against the upper end portion 22u of the rail opening 22 of the guide rail 2.
[0048] As shown in FIG. 4, a handle 48 for controlling the movement of the flap 4 is provided on the indoor side of the flap 4 .
[0049] In the opening S1, a first heated foaming material 101, a second heated foaming material 102, and a third heated foaming material 103 (see FIG. 7) are provided. The first heated foaming material 101, the second heated foaming material 102, and the third heated foaming material 103 are arranged within a stroke that moves in the indoor / outdoor direction of the flap 4. The stroke is the length B1 in the indoor / outdoor direction between the airtight material 44 of the flap 4 shown by a solid line and the surface 41a of the flap main body 41 of the flap 4 facing the outdoor side shown by a two-dot chain line.
[0050] The first heated foaming material 101 is provided on the surface 137a on the widthwise center side of the fourth wall portion 137. The first heated foaming material 101 is provided over substantially the entire length of the fourth wall portion 137. The first heated foaming material 101 is fixed to the surface 137a of the fourth wall portion 137 by adhesion, screws, or the like. The first heated foaming material 101 is formed in a flat plate shape. The plate surface of the first heated foaming material 101 faces the widthwise direction. The first heated foaming material 101 is arranged along the indoor-outdoor direction. The first heated foaming material 101 foams in the widthwise direction in the event of a fire, and closes the gap between the fourth wall portion 137 and the ventilation unit 2A. The first heated foaming material 101 may be short in the vertical direction and provided in plurality at intervals in the vertical direction on the fourth wall portion 137.
[0051] The second heated foaming material 102 is provided on the surface 23a of the guide mounting wall 23 of the guide rail 2 at the center in the width direction. The second heated foaming material 102 is provided over substantially the entire length of the guide mounting wall 23. The second heated foaming material 102 is fixed to the surface 23a of the guide mounting wall 23 by adhesion, screws, or the like. The second heated foaming material 102 is formed in a flat plate shape. The plate surface of the second heated foaming material 102 faces the width direction. The second heated foaming material 102 is arranged along the indoor-outdoor direction. The second heated foaming material 102 foams in the width direction in the event of a fire, and closes the gap between the guide mounting wall 23 and the ventilation unit 2A. The second heated foaming material 102 may be short in the vertical direction and provided in plurality at intervals in the vertical direction on the guide mounting wall 23.
[0052] As shown in FIG. 7, the third heated foaming material 103 is provided on the surface 41b facing the indoor side of the upper and lower ends of the flap main body 41. The third heated foaming material 103 is fixed to the surface 41b of the flap main body 41 with rivets 104. The third heated foaming material 103 is formed in a flat plate shape. The plate surface of the third heated foaming material 103 faces the indoor / outdoor direction. Even if the resin cap 43 melts in the event of a fire, the third heated foaming material 103 foams in the indoor / outdoor direction to close the gap between the flap 4 and the guide rail 2.
[0053] When exposed to high temperatures during a fire, the roller cover 462 made of resin of the roller 46A provided on the flap 4 shown in FIG. 6 may melt. When the roller cover 462 covering the outside of the roller body 461 melts, the roller body 461 is exposed, and the diameter of the roller 46A becomes smaller by the thickness of the roller cover 462. This allows the roller body 461 to move upward through the middle hole 32c of the guide hole 32A to the upper end of the upper hole 32b. When the flap 4 is exposed to high temperatures and deforms, the roller 46A moves toward the upper part of the upper hole 32b through the guide hole 32A, and the upper part of the flap 4 extends upward. This prevents the flap 4 from deforming toward the outdoors and moving away from the rail opening 22 of the guide rail 2.
[0054] 8 deforms, the protrusion 472a of the locking portion 472 of the locking plate 47A provided on the flap 4 moves toward the upper end 22u inside the rail opening 22 of the guide rail 2, and the upper portion of the flap 4 extends upward. This prevents the flap 4 from deforming toward the outdoors and moving away from the rail opening 22 of the guide rail 2.
[0055] When the handle 48 is operated in the open direction from the closed state of the flap 4, a downward force is applied to the flap 4. The roller 46A of the flap 4 moves from the middle hole 32c to the lower hole 32a in the guide hole 32A of the roller guide 3A. As a result, the upper part of the flap 4 moves downward and slightly toward the outdoor side. The roller 46B of the flap 4 gradually moves slightly downward along the lower part of the guide hole 32B of the roller guide 3B as it moves toward the outdoor side. As a result, the middle of the flap 4 in the up-down direction moves toward the outdoor side and slightly downward. The flap 4 gradually inclines toward the outdoor side as it moves downward. The flap 4 moves away from the rail main body 21 of the guide rail 2 to the outdoor side and is in an open state. Outside air flows into the room through the slit 162 of the vertical frame 13 and the rail opening 22 of the guide rail 2.
[0056] When the handle 48 is operated in the closing direction from the open state of the flap 4, an upward force is applied to the flap 4. The roller 46A of the flap 4 moves from the lower hole 32a to the middle hole 32c of the guide hole 32A of the roller guide 3A. The movement of the roller 46A stops at the position where the diameter of the middle hole 32c of the guide hole 32A becomes the same as the diameter of the roller 46A. The roller 46B of the flap 4 gradually moves slightly upward along the lower part of the guide hole 32B of the roller guide 3B toward the indoor side. The protrusion 472a of the lock plate 47B and the protrusion 472a of the lock plate 47C come into contact with the upper end 22u of the rail opening 22 of the guide rail 2, and the upward movement of the flap 4 is restricted. The airtight material 44 of the flap 4 comes into contact with the rail main body 21 of the guide rail 2, and the flap 4 is in the closed state, and the outside air does not flow into the indoors.
[0057] In the ventilation device 100 configured in this manner, in the event of a fire, the first heated foaming material 101 provided on the fourth wall portion 137 of the pair of vertical frames 13 foams and blocks the space between the fourth wall portion 137 of the vertical frames 13 and the ventilation unit 2A, thereby suppressing the spread of the fire.
[0058] In the ventilation device 100, the first heated foaming material 101 is arranged along the indoor / outdoor direction, so that in the event of a fire it foams in the width direction, thereby reliably sealing the gap between the fourth wall portion 137 of the vertical frame 13 and the ventilation unit 2A.
[0059] In the ventilation device 100, the first heated foaming material 101 is arranged over approximately the entire length of the opening S1 in the vertical direction, so that in the event of a fire it can foam and close the space between the fourth wall portion 137 of the vertical frame 13 and the ventilation unit 2A over approximately the entire length in the vertical direction.
[0060] In the ventilation device 100, in the event of a fire, the second heated foaming material 102 provided on the guide mounting wall portion 23 of the guide rail 2 foams and blocks the space between the guide mounting wall portion 23 of the guide rail 2 and the ventilation unit 2A, thereby suppressing the spread of the fire.
[0061] In the ventilation device 100, the second heated foaming material 102 is arranged along the indoor-outdoor direction, so that in the event of a fire it foams in the width direction, thereby reliably sealing the gap between the guide mounting wall portion 23 of the guide rail 2 and the ventilation unit 2A.
[0062] In the ventilation device 100, the second heated foaming material 102 is arranged over approximately the entire length of the opening S1 in the vertical direction, so that it can foam in the event of a fire and block the space between the guide mounting wall portion 23 of the guide rail 2 and the ventilation unit 2A over approximately the entire length in the vertical direction.
[0063] In the ventilation device 100, even if the resin cap 43 of the flap 4 melts in the event of a fire, the third heated foaming material 103 foams in the indoor / outdoor direction and can close the gap between the flap 4 and the guide rail 2.
[0064] Since the ventilation device 100 is installed in a high-rise building, the ventilation device 100 for the high-rise building can suppress the spread of fire.
[0065] The shapes and combinations of the components shown in the above-described embodiment are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present disclosure.
[0066] For example, in the embodiment shown above, the first heated foaming material 101, the second heated foaming material 102, and the third heated foaming material 103 are provided, but this is not limited thereto. It is sufficient that at least one of the first heated foaming material 101, the second heated foaming material 102, and the third heated foaming material 103 is provided. [Explanation of symbols]
[0067] 1…Frame body 2...Guide rail 3...Roller guide 4...Flap (movable part) 13...Vertical frame 23... Guide mounting wall 100…Ventilation system 101...first heat foaming material, heat foaming material 102...second heat foaming material, heat foaming material 103...Third heat foaming material (heat foaming material) 137…4th wall section S1...Opening
Claims
1. A frame body having an opening penetrating in an indoor / outdoor direction; A movable member that is disposed within the opening and moves in an indoor / outdoor direction to open and close the opening; a heat foaming material provided within the opening, The opening is formed between a pair of vertical frames spaced apart in the width direction, between an upper frame and a lower frame, and over substantially the entire length of the frame. The vertical frame has a wall portion facing the opening and arranged along the indoor / outdoor direction, The ventilation device includes a first heated foaming material provided on each of the wall portions of the pair of vertical frames.
2. 2. The ventilation system of claim 1, wherein the heated foam material is disposed within an indoor / outdoor stroke of the movable member.
3. The ventilation device according to claim 1 or 2, wherein the heated foaming material is arranged along an indoor / outdoor direction.
4. The ventilation device according to claim 1 , wherein the heated foaming material is disposed over substantially the entire length of the opening in the vertical direction.
5. A guide rail is provided on the indoor side of the opening, The heat-foaming material is The ventilation device according to claim 1 , further comprising a second heating foaming material arranged along a wall portion along an indoor / outdoor direction of the guide rail.
6. The ventilation device according to any one of claims 1 to 5, which is installed in a high-rise building.
Citation Information
Patent Citations
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