JP2001254492A - Building ventilator structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building ventilator structure which prevents the wind and rain from entering the inside of a building even when it is stormy. SOLUTION: A ventilation passage 15 independent from an exhaust passage 16 has two ventilation passage openings 17. The wind and rain from the outside pass through from one opening 17 to the other opening, and are prevented from entering the inside of the building. The exhaust air inside the building passes through a lower member opening part 12 from a roof opening part 5, enters the exhaust passage 16, passes through baffle plates 11, 18, and is exhausted into the ventilation passage 15 from a communication hole 13. The exhaust air is discharged outside the building together with the wind or in a single manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a building ventilation system for preventing rain from entering a building.

[0002]

2. Description of the Related Art Various ventilators have been proposed to ventilate inside and outside buildings such as houses and buildings. In particular, many proposals have been made for a ventilation device to be installed on a roof for the purpose of preventing the generation of fungi in the attic space, eliminating condensation, and preventing corrosion. JP-A-11-8
No. 1592 discloses that the ventilation passage has two openings and a bypass-shaped lower ventilation passage is formed between the openings, and the air inside the building passes through the bypass ventilation passage from one opening. A ridge ventilation device is disclosed which reaches the other opening and is discharged to the outside from the ventilation hole through an upper ventilation passage formed thereon. Also, JP-A-11-1900
No. 77 discloses a water-impermeable ventilation plate in which an upper ridge plate provided with a ventilation hole and a drain port is mounted on a lower ridge plate provided with an exhaust port, and a ventilation port and a drain port are provided in a space between the two ridge plates. Is disclosed. 61-1
Japanese Patent No. 70630 discloses a ridge plate receiver provided on a roof and having a ventilation opening, and a ridge plate covering a roof ridge and forming a ventilation gap between a roof slope and the ridge plate. A ridge structure engaged with a receiver is disclosed.

[0003]

However, the former 2
In the technology disclosed in the two patent publications, a ventilation hole is opened on the upper surface of the ventilation device, and even if the opening and the position of the exhaust from the inside of the building are shifted back and forth, the wind and rain blows into the inside of the building somewhat. That is inevitable. Also, in the latter technology disclosed in the Utility Model Publication, the path through which the air inside the building is discharged to the outside is the same as the path through which wind and rain from outside enter. The wind blows through the ventilation gap between them, and at the same time, the rain blows into the building as small water droplets that easily enter the building.

Further, in recent years, there has been a demand for downsizing of a ventilation device. However, in order to reduce the size without reducing the ventilation performance, the ratio of the opening area for ventilation to the installation area of the device must be increased. This is an increasingly disadvantageous situation for preventing intrusion of wind and rain.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by providing a passage for external wind independent of a passage for exhaust air for ventilation. .

That is, the invention according to claim 1 is a building ventilation device structure having an exhaust passage and a ventilation passage, wherein the ventilation passage is opened on both side surfaces of the device, and the wind flowing in from one opening receives the other air. A building ventilation system characterized by being provided so as to blow through to an opening, a baffle plate being provided in an exhaust passage, and the exhaust passage communicating with the ventilation passage by a communication hole opened in a plane parallel to the ventilation of the ventilation passage. It is a device structure.

The building referred to here may be any building such as a general house such as a wooden structure or a steel structure, a building, a warehouse, etc., as long as internal ventilation is required.

The installation place of the apparatus of the present invention may be on a roof, on a wall, or the like. Especially, it is preferable to install it on the roof ridge or the slope of the roof.

[0009] The structure of the building ventilation system of the present invention has an exhaust passage and a ventilation passage, and the ventilation passage is opened on both side surfaces of the device so that the air flowing from one opening blows into the other opening. It is provided in. Therefore, the wind blown from outside to the building ventilation system is prevented from entering the exhaust passage and the interior of the building beyond the ventilation passage.

The exhaust passage has a baffle plate to prevent rain from entering the building as small water droplets. And since it becomes the resistance which blows through the inside with respect to wind, the invasion of wind to an exhaust passage is suppressed. In order to prevent the wind from the outside from passing through the ventilation path and entering the exhaust path, it is preferable that the path resistance against the flow of the wind is larger in the exhaust path than in the ventilation path. The baffle plate of the exhaust passage preferably extends alternately from the two opposing surfaces in order to prevent entry of small water droplets and increase the passage resistance.

Further, since the exhaust passage communicates with the ventilation passage through a communication hole opened in a plane parallel to the ventilation passage, the ventilation passage passes through the ventilation passage as described by Bernoulli's theorem. At this time, the pressure in the ventilation passage becomes smaller than that in the exhaust passage, and air flows from the exhaust passage into the ventilation passage. Therefore, the wind is prevented from entering the exhaust passage from the ventilation passage. Then, the air inside the building in the exhaust passage is discharged to the outside of the building with the wind. Here, if the opening area of the communication hole is too large, a large amount of rainwater-derived water droplets that blow through the ventilation path with the wind may enter the communication hole, so that the entire opening area of the communication hole has the communication hole of the ventilation path. 1/200 to 1/2 of the area of the wall is preferred. 1
If it is smaller than / 200, exhaust to the outside becomes insufficient. 1
If it is larger than / 2, a lot of water droplets may enter the exhaust passage.

The structure of the building ventilation system according to the present invention is preferably the simplest one because it has two members. A mounting member, a draining member, or the like may be added in addition to the two members.
For example, forming an exhaust passage between one member and a building,
For example, a ventilation path is formed between two members, or an exhaust path is formed by one member and a ventilation path is formed by the other member. Of course, other configurations may be used.

A second aspect of the present invention is a structure of a building ventilation system having three members in the upper, middle and lower portions, wherein the structure is installed on a roof, and the lower member has an installation portion on the roof. Is provided on the lower member, and a gap between the lower member and the lower member is used as an exhaust passage. The exhaust passage is provided with a baffle plate provided on at least one of the lower member and the middle member. The ventilation hole is provided in the middle member, and the middle member has an opening communicating with the exhaust passage and the ventilation passage, and the ventilation passage is a building ventilation device that allows the wind to blow out to the outside. The structure is a building ventilation device characterized by opening to both sides of the building.

The above structure is a simple structure composed of the three members of the upper, middle and lower parts, so that it is easy to manufacture and attach to a building. And since it is installed on the roof, high temperature and high humidity air rising in the building can be exhausted to the outside of the building by natural ventilation. Of course, forced exhaust may be performed using a fan or another method.

[0015] The roof may be installed in a roof ridge,
It may be on a slope, or on a flat roof.

The lower member has an installation portion on the roof, is fixed to the roof, and a middle member is installed on the lower member to make a gap between the lower member and the lower member an exhaust passage. To the exhaust passage.

Since the exhaust passage has a baffle plate, the invasion of wind and rain from the outside is prevented. The baffle may be provided on at least one of the lower member and the middle member, but is preferably provided on both. Preferably, a plurality of baffles are provided.

[0018] Then, the upper member is installed on the middle member so that the gap between the upper member and the middle member is an independent ventilation path. The middle member has a hole communicating with the exhaust passage and the ventilation path. The road is open on both sides of the building ventilation system to allow the wind to blow to the outside. The ventilation passage is formed by a gap between the upper member and the middle member, and air inside the building is discharged from the exhaust passage to the outside through the communication hole and the ventilation passage. At this time, the air is discharged together with the wind passing through the ventilation path or independently. In addition, since the ventilation path is open on both sides of the building ventilation device, the wind flowing in from one opening will flow through to the other opening, and the wind from the outside only passes through the ventilation path, No further intrusion into the device occurs.

For example, another member is added to the structure of the above three members to make two exhaust passages, or an upper member is also used as a part of a solar power generator installed on a roof. To add four or more members, or 3
Some of the components are shared with other equipment,
A part of the two members may be integrated.

Next, according to a third aspect of the present invention, in the structure of the building ventilation system according to the second aspect, the upper member has a closed upper surface and a gap between the upper member and the roof. It is.

The fact that the upper surface of the upper member is closed means that rain does not enter the interior of the apparatus even if rain falls on the upper surface of the apparatus. Therefore, the rain that has fallen on the apparatus flows directly onto the roof and does not flow into the apparatus. If there is a gap between the upper member and the roof, the gap can be used as an opening of the ventilation path. In other words, there is no need to separately provide an opening for the ventilation path, so that the structure is simple. Therefore, manufacture and assembly of the device are simplified.

According to a fourth aspect of the present invention, there is provided the structure of the building ventilation system according to the first, second or third aspect, wherein the structure is installed in a roof ridge.

Since the roof ridge is the tallest part of the building, if the device is installed in the ridge, the air inside the building can be exhausted without staying in the attic. In addition, since the work is not a slope, the work can be stably performed and the installation can be easily performed.

[0024]

Since the present invention is configured as described above, it has the following effects.

An air passage independent of the exhaust passage is open on both sides, and is provided so that the wind flowing in from one opening blows out to the other opening. Through the building to prevent entry into the building. And the exhaust passage has a baffle,
Prevents small water droplets from entering. Therefore, it is possible to prevent rain from entering the building even in severe wind and rain.

Since the exhaust passage communicates with the ventilation passage through a communication hole opened in a plane parallel to the ventilation passage, the exhaust passage is efficiently exhausted from inside the building.

Further, since the three members form a ventilation passage independent of the exhaust passage, the device can be easily manufactured and assembled, and the manufacturing cost can be reduced.

Also, the upper surface of the upper member is closed,
Since there is a gap between the roof and the roof, the inflow of rainwater is prevented, and the structure of the device is simple and easy to manufacture.

Further, if the exhaust system is installed in the roof ridge, the exhaust can be performed smoothly without retaining the exhaust in the attic. And the installation work on the roof is safe and easy.

[0030]

Embodiments of the present invention will be described below with reference to the drawings.

-Structure and Installation Method- FIGS. 1 and 2 are sectional views of the structure of the building ventilation system of the present invention installed in a roof ridge. FIG. 2 shows the location of the upper member mounting bracket 21 supporting the upper member 10 at the top of the apparatus so that the structure of the installation can be understood. FIG. This shows a place where there is no member mounting bracket 21. As can be seen from FIG. 3, a part of the roof ridge is opened to form a roof opening 5 through which exhaust air from inside the building passes. The lower member 8 is placed on the opening 5 and fixed to the roof. Place the middle member 9 on it,
It is fixed to the lower member 8. The upper member 10 is placed thereon and fixed to the middle member 9.

The exhaust passage 16 includes a lower member 8 and a middle member 9.
Is formed by the gap. The ventilation passage 15 is formed by a gap between the middle member 9 and the upper member 10 and opens on both side surfaces of the apparatus. The exhaust passage 16 communicates with the ventilation passage 15 through a communication hole 13 opened in the middle member 9.

Hereinafter, the structure and installation method of the present apparatus will be described in detail.

In order to install the present apparatus in a ridge, an opening 5 is provided in a roof ridge, and a fixing bracket 7 for installation is attached. The opening 5 of the roof ridge has a width of 3 to
The length is 10 cm, and the length is set to a required length according to the size of the building. Then, a roofing (omitted in the figure) is attached on the base plate 4, a drainer 6 is attached from above, and the roof tile 3 is laid so as not to cover the opening 5 from above. Further, the fixture 7 is attached to the roof tile 3 from above with screws, nails, screws or the like.

Next, the lower member 8 shown in FIG. 4 will be described. The lower member 8 may be formed by bending a thin metal plate, or may be formed of a synthetic resin, FRP, or the like. A rectangular opening 12 for exhaust is provided in the longitudinal direction of the peak of the chevron of the lower member 8. The opening 12 may be a single long opening in the longitudinal direction, or a bridge may be formed for reinforcement, and the opening may be divided into a plurality of openings. Since dew condensation tends to occur on the lower surface of the lower member, it is preferable to attach a dew-water absorbing material such as a foamed plastic sheet or a nonwoven fabric for absorbing dew water to the lower surface of the lower member. This dew condensation water absorbing material also has a function as a heat insulating material.

A baffle plate 11 extending upward is provided on the upper surface of the lower member. The baffle plate 11 is for preventing rainwater that has become small water drops from entering the interior of the building. Most of the rainwater, which has become water droplets, goes out as it is through the ventilation passage 15 together with the wind, but some of the water droplets may enter the exhaust passage 16 through the communication hole 13. The plate 11 is attached. The water droplets whose intrusion has been stopped by the baffle plate 11 are discharged to the outside through a water draining hole 19 of the later-described middle member 9. The baffle plate 11 may be attached with screws or rivets, but the lower member 8
And may be integrally formed. Baffle plate 11 extending upward
May be one or two or more on each of the left and right roof slopes. In FIG. 4, two baffle plates 11 are screwed. Further, at the end in the longitudinal direction, the end shield plate 22 is provided.
Is provided to shield the end.

The lower member 8 is fixed on the roof by screwing it to the fixing bracket 7 at the mounting hole 23. This fixing is performed firmly so as to withstand a severe wind such as a typhoon.

Next, the middle member 9 will be described. FIG.
(A) is a perspective view from above of the middle member 9, FIG.
FIG. 4 is a perspective view of the middle member 9 from below. Similarly to the lower member 8, the middle member 9 may be formed by bending a thin metal plate, or may be formed of a synthetic resin, FRP, or the like. Below the middle member 9, there is a fixing portion 28 installed on the lower member 8, which is fixed with a fixture such as a screw or a screw.

A baffle plate 18 similar to the baffle plate 11 provided on the lower member 8 is provided on the lower surface of the middle member 9 so as to extend downward and alternately with the baffle plate 11 on the lower member side. Can be The function of the baffle plate 18 is the same as that of the baffle plate 11 of the lower member 8. The way of installation, the number, and the like are the same as those of the baffle plate 11 of the lower member 8. Here, baffle plate 11,
The water droplet stopped at 18 is discharged to the outside through a drain hole 19 provided at the lower end of the middle member 9.

In the central portion of the lower surface of the middle member 9, a portion above the opening 5 of the roof ridge is provided with a foamed plastic sheet or nonwoven fabric for absorbing the dew condensation water so that the dew condensation water does not enter the inside of the building. It is preferable to attach the dew condensation water absorbing material 14 such as. The dew condensation water absorbing material 14 also has a heat insulating function.

The space surrounded by the upper surface of the lower member 8 and the lower surface of the middle member 9 is an exhaust passage 16. The gap between the lower member 8 and the middle member 9 is preferably 0.5 to 10 cm. 0.
If it is less than 5 cm, exhaust circulation becomes insufficient,
If it is larger than 20 cm, it will jump out on the roof greatly and the appearance will be bad.

At the foot of the slope of the middle member 9, there is provided a communication hole 13 through which exhaust air from inside the building exits to the ventilation path. The communication hole 13 is a rectangle whose longitudinal direction is a long side, and a plurality of the communication holes 13 are provided in the longitudinal direction. It is preferable to provide the same number on the slopes on both sides or to make the opening areas on both sides equal.

A mounting bracket 21 for mounting the upper member 10 is provided on the upper surface of the middle member 9. A gap is formed between the middle member 9 and the upper member 10 by the height of the mounting bracket 21. That is, the mounting bracket 21 is
0 and the middle member 9 are fixed by forming a gap between the two members. 6 and 7 are a perspective view and a cross-sectional view, respectively, of the mounting bracket 21. Since the mounting bracket 21 is erected in the ventilation path 15, the ventilation resistance is set so as not to obstruct the flow of wind. It is preferable to have a small shape. And it installs so that an installation area may become as small as possible and a required fixing strength may be obtained.

Next, the upper member 10 will be described. FIG.
FIG. 8A is a perspective view of the upper member 10 from above, and FIG.
FIG. 3 is a perspective view of the upper member 10 from below. Upper member 1
Similarly to the lower member 8 and the middle member 9, 0 may be formed by bending a thin metal plate, or may be formed of a synthetic resin, FRP, or the like. Below each slope of the upper member 10, there is a mounting hole 27 for installation on the middle member 9,
It is installed on the mounting bracket 21 with a mounting tool such as a screw or a screw.

When mounted on the middle member 9, the upper surface of the upper member 10 is in a closed state, and does not allow the invasion of wind and rain. Then, a gap between the upper member 10 and the middle member 9 becomes the ventilation path 15. This gap is preferably 0.5 to 10 cm. If it is less than 0.5 cm, the flow of the wind is obstructed and the wind may enter the building. If it is larger than 10 cm, it protrudes greatly on the roof and the appearance becomes poor.

The upper surface of the upper member 10 is a surface substantially parallel to the slope of the roof, and is bent substantially vertically downward from the lower end of the upper surface to form a side surface. The gap between the lower end of the side surface parallel to the ridge and the roof forms the ventilation path opening 17. There is one gap on each side of the roof, but the gaps are almost the same size. One may be the entrance for the wind from the outside and the other may be the exit, and the entrance and the exit may change depending on the direction of the wind.

It is preferable that the angle between the two slopes of the above three members is changed so that it can cope with a change in the slope of the installed roof. That is, in FIG. 1, the angle at which the ridge is the top varies depending on the building to be installed, and it is preferable that the angles of the three members can be adjusted accordingly. For example, if it is made by bending and forming a thin metal plate, the angle between both slopes can be changed by opening or closing the slope at the installation site.

-Exhaust- The air in the building rises through the roof opening 5 and enters the exhaust passage 16. Then, it passes through the space between the baffle plate 11 and the baffle plate 18 and exits from the communication hole 13 to the ventilation path 15. When the wind is blowing, the air inside the building flows out of the building from the ventilation path opening 17 together with the wind passing through the ventilation path 15. When the wind is not blowing, the air in the building alone passes through the ventilation path 15 and goes out of the building from the ventilation path opening 17.

The exhaust air may be left to natural ventilation, or an exhaust fan may be attached for forced ventilation.

-Flow of wind and rain-As for rain falling on the upper surface of the device, the upper member 1
It runs down the top of 0 and falls on the roof and flows. At the time of heavy rain, an attempt is made to enter the inside of the device through the ventilation passage opening 17, but the side surface of the middle member 9 is prevented from entering the exhaust passage 16.

The wind enters the ventilation passage 15 from one opening 17, blows through the ventilation passage 15, and exits from the other opening 17. Since the communication hole 13 between the ventilation passage 15 and the exhaust passage 16 has an opening surface parallel to the ventilation, the wind does not blow into the ventilation passage 15. Conversely, according to Bernoulli's theorem, air is drawn from the exhaust passage 16 toward the wind.

When the rain collides with the roof or is blown by a violent wind, the rain forms small water droplets and tries to enter the building together with the wind. However, since the intrusion of the wind is prevented as described above, the small water droplets are used. Are also prevented from entering inside the exhaust passage 16. Exhaust passage 1
Even if it enters the inside of the building 6, it hits the baffles 11 and 18 and is prevented from entering the inside of the building. And the drain hole 19
Is discharged to the outside.

Since the structure is such that rain is prevented from entering, even if the wind speed is 35 m / s, such as a typhoon with a heavy rainfall of 4 L / min per 1 m ² , the apparatus enters the building. No rain intrusion occurs.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a portion of a building ventilation device according to the present invention without an upper member mounting bracket.

FIG. 2 is a cross-sectional view of a part of the building ventilation system according to the present invention, in which an upper member mounting bracket is provided.

FIG. 3 is an exploded schematic view of the building ventilation device of the present invention.

FIG. 4 is a perspective view of a lower member.

5A is a perspective view of the middle member from above, and FIG. 5B is a perspective view of the middle member from below.

FIG. 6 is a perspective view of an upper member mounting bracket.

FIG. 7 is a sectional view of an upper member mounting bracket.

8A is a perspective view of the upper member from above, and FIG. 8B is a perspective view of the upper member from below.

[Description of Signs] 1 ridgewood 2 rafters 3 roof tiles 4 roof plate 5 roof opening 6 wastewater drainage 7 fixing bracket 8 lower member 9 middle member 10 upper member 11 baffle plate 12 lower member opening 13 communication hole 14 dew water absorbing material 15 ventilation passage 16 exhaust passage 17 ventilation passage opening 18 baffle plate 19 drain hole 21 upper member mounting bracket 22 end shield plate 23 mounting hole 24 mounting hole 25 mounting hole 26 mounting hole 27 mounting hole 28 fixing portion

Claims (4)

[Claims] 1. A building ventilation device structure having an exhaust passage and a ventilation passage, wherein the ventilation passage is opened on both side surfaces of the device, and is provided such that air flowing in from one opening blows through to the other opening. A ventilation system for a building, wherein a baffle plate is provided in the exhaust passage, and the exhaust passage communicates with the ventilation passage through a communication hole opened in a plane parallel to the ventilation of the ventilation passage. 2. A building ventilation apparatus structure having three members in an upper middle lower portion, wherein the lower member has an installation portion on the roof, and the middle member is installed on the lower member. The gap between the lower member and the lower member is an exhaust passage, and the exhaust passage is provided with a baffle plate installed on at least one of the lower member and the middle member, and the upper member is installed on the middle member, and The gap is used as a ventilation path, and the middle member has a hole that connects the exhaust path and the ventilation path, and the ventilation path is open on both sides of the building ventilation device so that the wind can blow out to the outside. A building ventilation system structure characterized by the following. 3. The upper member has a top surface closed and a gap between the upper member and the roof.
The described building ventilation system structure. 4. The building ventilation system according to claim 1, which is installed in a roof ridge.