JP4156917B2 - Building ventilation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building ventilation system used by being provided on a roof of a building such as a house.
[0002]
[Prior art]
Conventionally, in a wooden house, a ridge ventilation member has been adopted as a method for discharging high-humidity air or hot air that stays in the attic space. The building ventilation member was attached to the building where the wind and rain hit directly and the possibility of rainwater intrusion was extremely high, so it was difficult to take measures against rainwater. Therefore, the building ventilation member was provided with a draining structure for preventing rainwater from entering.
[0003]
[Problems to be solved by the invention]
However, in the conventional technology, due to the complicated draining structure provided in the building ventilation member, the effective opening area for the target ventilation cannot be secured sufficiently large, and the ventilation effect is limited There was a problem.
[0004]
The present invention has been made paying attention to such a conventional problem, and an object of the present invention is to provide a building ventilation system capable of enhancing the ventilation effect by sufficiently increasing the effective opening area.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a building ventilation system according to the present invention of claim 1 is a building ventilation system in which a main body is provided on a roof of a building, and the main body is divided into a fork and a bottom portion. And has a groove under the roof , and is supported by being fitted to the purlin from above, and has an under-roof opening, an upper roof opening, and a side opening that communicate with each other, and the under-roof opening is below the roof. Provided on the bottom divided into two forks, the opening on the roof is provided above the roof, the side opening is provided above the roof and below the roof opening, and the main body, There is a projecting part to the outside on the upper side of the side opening, and the air that has entered the inside of the main body from the side opening flows into the roof top opening so that the air enters the lower side of the side opening. A guide that protrudes and slopes toward the roof opening Further comprising a water receiving portion below the main body, it characterized.
[0006]
In the building ventilation system according to the present invention, when the air inside the building is warmed, the air rises and enters the inside of the main body through the lower roof opening of the main body and exits to the upper upper roof opening. Thereby, internal air can be ventilated. When rain enters the inside of the main body from the opening on the roof, the rain that has entered is received by the water receiving portion. For this reason, it can prevent that rain falls below a roof and gets wet. Since rain entering from the roof top opening can be received by the water receiving part, it is not necessary to provide a complicated draining structure like the conventional building ventilation member, and the effective opening area of the roof bottom opening and the roof top opening is sufficient. Increase the ventilation effect. It should be noted that a fan that is rotated by power may be provided inside the main body so as to forcibly ventilate from the roof opening to the roof opening.
[0008]
In the building ventilation system according to the present invention, when the wind is blowing outdoors, the wind that flows along the roof and enters from the side opening passes through the roof top opening. At this time, due to the reduced pressure inside the main body, the air below the roof is sucked into the opening under the roof and exits to the opening on the roof. For this reason, the ventilation effect inside a building can be heightened.
[0009]
In the building ventilation system according to the present invention , the protrusion functions as a rain guard against the side opening. In addition, the wind received on the side surface of the main body is blocked by the protruding portion and hardly flows upward, and enters the inside of the main body from the side opening. For this reason, external air can be efficiently taken in the main body. Air entering the interior of the main body through the side openings flows along the guides to the roof top opening. For this reason, the air that has entered the inside of the main body from the side opening is unlikely to flow to the side of the lower roof opening, flows to the upper roof opening, sucks the air below the roof, and discharges it to the upper roof opening. Make it easier. For this reason, the ventilation effect inside a building can be heightened more.
[0010]
A building ventilation system according to a second aspect of the present invention is the building ventilation system according to the first aspect , comprising a shutter and a water detection sensor, wherein the shutter is provided so as to be able to open and close the opening on the roof by power. The water detection sensor has a configuration that outputs a close signal to the shutter when detecting water.
[0011]
In the building ventilation system according to the second aspect of the present invention, when it rains, the water detection sensor detects water and outputs a closing signal to the shutter. The shutter closes the roof top opening by power in response to a closing signal. Thereby, it can prevent that rain falls below a roof and gets wet.
The water detection sensor may be a sensor that detects a change in atmospheric pressure that is likely to rain.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of the present invention.
As shown in FIGS. 1 and 2, a roof 1 of a timber house is formed by fixing rafters 3 so as to be inclined downward from the purlin 2 on both sides of the purlin 2 around a purlin 2 extending in the horizontal direction. A board 4 is fixed on the rafter 3, and a roof tile 5 is provided on the board 4. A roll stopper 6 is fixed on the purlin 2.
[0013]
As shown in FIG. 3, the building ventilation system 10 has a main body 11 formed of a cylindrical body having a rectangular cross section. The main body 11 has a rectangular recess 13 at the lower end of two opposing side surfaces 12a, and the edges of the recess 13 are connected to each other by a surface 14 on each side surface 12a. As a result, the main body 11 has a lower portion divided into two and has a groove 15 at the bottom. The main body 11 is disposed between two rafters 3 arranged in parallel, and is supported by fitting a groove 15 to the purlin 2 from above. The main body 11 has an under-roof opening 16 at the bottom part divided into two. The main body 11 has a plurality of slit-like roof openings 17 in the upper part. The main body 11 has side openings 18 that are elongated in the lateral direction on two opposing side faces 12b adjacent to the two side faces 12a. The under roof opening 16, the above roof opening 17, and the side opening 18 communicate with each other.
[0014]
The under roof opening 16 is provided below the roof 1 and communicates with the back of the hut. The roof top opening 17 is provided above the roof 1, and the side opening 18 is provided above the roof 1 and below the roof top opening 17. Insect repellent nets are stretched on the roof top opening 17 and the side opening 18.
[0015]
The main body 11 has a projecting portion 20 to the outdoor side above the side opening 18. The protruding portion 20 functions as a rain shield with respect to the side opening 18. The main body 11 has a plate-like guide 21 that protrudes inwardly below the side opening 18 and is inclined toward the roof opening 17. A cover 22 is fixed to the outside of the main body 11 below the side opening 18. The cover 22 is in close contact with the roof tile 5 to prevent wind and rain from entering the gap between the main body 11 and the roof tile 5.
[0016]
The building ventilation system 10 includes a water receiver 23 below the main body 11. The water receiver 23 covers the lower part of the main body 11 widely and can receive all the water that has entered the main body 11. The bottom of the water receiver 23 is inclined so that the center is lowered, and a drain pipe 24 is connected to the center. The water receiver 23 is fixed to the rafter 3.
[0017]
The building ventilation system 10 further includes a shutter and a water detection sensor (not shown). The shutter is provided above the rooftop opening 17 of the main body 11, and can open and close the rooftop opening 17 by power. The shutter has a configuration that is closed by power in response to a closing signal. The water detection sensor is provided on the roof tile 5 and has a configuration for outputting a close signal to the shutter when detecting water such as rain or snow.
[0018]
Next, the operation will be described.
As shown by the arrows in FIG. 1, in the building ventilation system 10, when the air inside the house is warmed, the air rises and enters the inside of the main body 11 from the under roof opening 16 of the main body 11. Exit to the upper roof top opening 17. Thereby, compared with the ventilation port provided in the conventional wall surface, an effective ventilation area can be enlarged and the ventilation effect can be heightened. When the wind is blowing outdoors, the wind that flows along the roof 1 and enters from the side opening 18 passes through the roof opening 17. At this time, due to the reduced pressure inside the main body 11, the air below the roof 1 is sucked and enters the under-roof opening 16 and exits to the above-roof opening 17. For this reason, the ventilation effect inside a building can be heightened using a wind. In this way, high-humidity air and hot air staying in the cabin space can be effectively discharged.
[0019]
In the building ventilation system 10, the wind received on the side surface 12 b of the main body 11 is blocked by the protruding portion 20 and hardly flows upward, and enters the inside of the main body 11 from the side opening 18. For this reason, external air can be taken into the main body 11 efficiently. The air that has entered the inside of the main body 11 from the side opening 18 flows along the guide 21 to the rooftop opening 17. For this reason, the air that has entered the inside of the main body 11 from the side opening 18 does not easily flow to the side of the lower roof opening 16, and flows to the upper roof opening 17 and sucks the air below the roof 1. It is easy to discharge into the opening 17. For this reason, the ventilation effect inside a building can be heightened more.
[0020]
In the building ventilation system 10, when rain or snow falls, the water detection sensor detects water and outputs a closing signal to the shutter. The shutter closes the roof top opening 17 by power in response to a closing signal. Thereby, it can prevent that rain falls below the roof 1 and gets wet. However, when rain enters the inside of the main body 11 from the roof top opening 17 or the side opening 18 due to sudden rain showers or strong rain entering from the shutter, the rain that has entered is received by the water receiving portion 23. For this reason, it can prevent that rain falls below the roof 1 and gets wet. Since rain entering from the roof top opening 17 or the side opening 18 can be received by the water receiving portion 23, it is not necessary to provide a complicated draining structure as in the conventional building ventilation member, and the roof bottom opening 16, roof The effective opening area of the upper opening 17 and the side opening 18 can be sufficiently increased to enhance the ventilation effect.
[0021]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the building ventilation system which can fully enlarge an effective opening area and can improve a ventilation effect can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic view of a building ventilation system according to an embodiment of the present invention.
2 is a side view of the building ventilation system shown in FIG. 1. FIG.
FIG. 3 is a perspective view of the building ventilation system shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Roof 2 Purlin 3 Rafter 10 Building ventilation system 11 Main body 12a, 12b Side surface 15 Groove 16 Roof bottom opening 17 Roof top opening 18 Side opening 20 Protrusion part 21 Guide 22 Cover 23 Water receiving part

Claims (2)

A building ventilation system whose main body is provided on the roof of a building,
The main body has a lower portion divided into two and has a groove at the bottom, and is supported by fitting the groove into the purlin from the upper portion, and has an under roof opening, an upper roof opening, and a side opening that communicate with each other. The under-roof opening is provided in a bottom portion that is divided into two forks below the roof, the above-roof opening is provided above the roof, and the side opening is above the roof and above the roof opening. Provided on the lower side, the main body further has a projecting portion to the outdoor side above the side opening, so that air entering the inside of the main body flows from the side opening to the roof top opening. A building ventilation system comprising: a guide projecting inwardly below the side opening and inclined toward the roof top opening; and a water receiving part below the main body.   A shutter and a water detection sensor. The building ventilation system according to claim 1, wherein the building ventilation system is configured to output a close signal.

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