JP3589877B2 - Ventilation member for ridge duct - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ridge duct ventilation member for ridge ventilation using a ridge as a method of indoor air ventilation in a low-rise house. In particular, the present invention relates to a ventilation member for a ridge duct installed in an attic for exhausting air from a ridge by collecting air in each room into a ridge with a duct provided on a ceiling.
[0002]
[Prior art]
Conventionally, a ventilation system from the roof in a house has been used a chimney system or a ridge ventilation system. The chimney system is a ventilation system that discharges indoor contaminated air by connecting a duct to a chimney as a ventilation path by using a building gap such as an air supply port or a sash gallery in an air supply path. The ridge ventilation system discharges contaminated air indoors from the base plate with gaps to the outside. The air collected from each room is once opened to the back of the hut by a duct and discharged from the ridge. We have proposed a method of connecting the duct to the ridge and discharging directly to the outside without opening it to the back.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned method of discharging from the ridge part by the duct, as shown in FIG. 7A, two purlins (8) project in the gap between the roof base plates, and a large-diameter duct is connected. And the indoor air could not be directly evacuated. In general houses, as shown in FIG. 7 (c), air is supplied and exhausted from the outer wall (15) through a duct. In this case, rainwater entering from the outdoor hood (16) is removed from the duct. A water gradient (14) is provided to make it difficult to enter. In the ridge direction, such a water gradient cannot be taken as shown in FIG.
[0004]
The present invention focuses on such a conventional problem, and provides a ventilation member for a duct for connecting indoor air to a ridge by a duct from an upper floor ceiling and exhausting the air to the outside. The shape is devised so that a large pressure loss does not occur during the flow.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a ventilation member for a ridge duct according to the present invention is a ventilation member for a ridge duct inserted and installed from the back side of a hut into a ventilation gap between base plates of a ridge, Includes a body with a horizontally long exhaust port and a wide bottom with a duct junction at the bottom with a vertical cross-section opening downward, so that there is no sudden change in ventilation area from the bottom to the top. The shape is gradually narrowed down so as to take a gentle change . The ventilation member for a ridge duct according to the present invention is a ventilation member for a ridge duct inserted and installed from the back side of a hut into a ventilation gap between base plates of a ridge, and has an exhaust port having a horizontally long cross section. The upper part has a duct connection port at the lower part, and is formed with a gentle slope between the two parts so as to prevent a sudden change in area. Further, the ridge duct ventilation member according to the present invention is characterized in that the exhaust port cross-sectional area of the ridge duct ventilation member is not less than the duct junction cross-sectional area.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 3, the ventilation member for a ridge duct according to the present invention may be installed by directly inserting the exhaust pipe portion into the ventilation gap (7) between the base plates of the ridge, and FIG. As shown in the figure, a method of fitting to a ridge waterproofing member (9) of our company which is installed along with a roofing member of a house may be adopted. In the latter case, the length of the exhaust pipe of the ridge section waterproofing member with an exhaust pipe is adjusted to any roofing member, and the ridge duct ventilation member is changed to a position where it can be easily inserted. Can be adapted to any roofing member while maintaining the same shape.
Further, the ventilation member for a ridge part duct according to the present invention has a gist that the cross section of the exhaust port is equal to or larger than the cross section of the exhaust duct junction in order to prevent a large pressure loss from occurring when the ventilation flow passes.
As a countermeasure for waterproofing, as shown in FIG. 2, a watertight material (6) is attached around the duct joint connection portion on the bottom surface of the ventilation member for the ridge duct.
[0007]
The material of the ventilation member for the ridge duct of the present invention may be any material as long as it is waterproof, water-resistant, lightweight and durable. In addition, the shape of the exhaust port at the tip is required to be horizontally long so that it can be inserted between the base plates of the ridge and between the exhaust plates. In addition, the lower end needs to be slightly smaller than the duct diameter in accordance with the duct diameter because the exhaust duct from each room is externally fitted and joined. The point of the present invention is that the shape change between the exhaust port and the duct connection port is made gradually, not suddenly.
The width L of the exhaust pipe opening shown in FIG. 1 is preferably about 30 mm to 50 mm. It is necessary that it can be inserted into the ventilation gap width of the field base plate of the ridge.
General roofing materials include Japanese roof tiles such as fired tiles and Yu-Yaku tiles, Western tiles or cement tiles, flat or corrugated roofing materials made of asbestos or other fiber-reinforced materials, metal roofing materials, and organic single roofing materials. Materials, stone shingles such as natural slate, etc., and the present invention can use any of these roofing materials.
[0008]
【Example】
Embodiment 1 Hereinafter, a first embodiment of a ventilation member for a ridge part duct according to the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is an overall perspective view of a ridge duct ventilation member according to a first embodiment of the present invention, FIG. 2 is a partial cross-sectional view of a ridge duct ventilation member, and FIG. FIG. 4 is a diagram illustrating a ventilation member for a ridge part duct according to the present invention in which a ridge part waterproof member with an exhaust pipe according to the present invention is installed in a house ridge part and fitted to the member. It is explanatory drawing at the time of installing.
[0009]
1 and 2, (1) is a ventilation member for a ridge duct according to the first embodiment of the present invention, (2) is an exhaust cylinder, (2a) is a cross section of an exhaust port, (2b) is an exhaust port, and (3). Is a trunk, (4) is a bottom surface, (5) is a duct junction, (5a) is a cross-sectional area of the duct junction, (6) is a watertight material, (7) is a ridge ventilation gap, (8) in FIG. In FIG. 4, (9) denotes a ridge waterproofing member with an exhaust pipe.
[0010]
In this embodiment, as shown in FIG. 1, the exhaust port (2b) has a horizontally long shape of about 50 mm in width and about 1 m in length so that it can be installed in the ridge ventilation gap. In addition, since the duct for exhausting air from each room has a diameter of about 20 cm, a circular duct joint (5) having a diameter slightly smaller than 20 cm is provided below the ridge duct ventilation member (1). ) Is provided. Then, in order to suppress an increase in pressure loss due to a change in the ventilation area of the air entering the ridge duct ventilation member through the duct, the air entering the ridge duct ventilation member through the duct is reduced. First, as shown by the bottom of (4), the torso is gradually opened to the side, and then gradually narrowed so as to take a gradual change so that there is no sudden change in the ventilation area from the bottom to the top. (3). Finally, the exhaust port cross-sectional area (2a) was set to be equal to or greater than the duct junction cross-sectional area (5a).
[0011]
In addition, as shown in FIG. 2, a watertight material (6) such as EPT rubber is attached around the inside of the upper end of the duct joint so that rainwater that has entered from the ridge gap does not enter the duct. ing.
As shown in FIG. 3, such a ventilation member for a ridge duct is provided by directly inserting the exhaust pipe portion (2) into a ventilation gap (7) provided by cutting out a base plate of the ridge. The fixing member (1a) of the ventilation member can be fixed to the purlin.
[0012]
When the exhaust duct from each room is connected to the lower duct junction (5), indoor air passes through the duct, enters the ridge duct ventilation member, passes through the exhaust ridge through the roof ridge, and is discharged outside. Is done. Therefore, the indoor dirty air is not released to the back of the hut, preventing the inflow of moisture into the back of the hut and increasing the durability of the building. In addition, the air that enters the ridge duct ventilation member through the duct is released to the wide bottom, so it is discharged to the ridge duct ventilation member without stagnation in the duct, and is further discharged with a gradual shape change. The exhaust gas is discharged from an exhaust port having a ventilation area equal to or larger than the area at the time of exhaust, and the pressure loss is minimized, and the exhaust efficiency is preferably maintained without deterioration. Although the weight of the Φ200 mm duct is 5 to 8 kg, the shape of the present invention ensures the strength of the ridge duct ventilation member even if such a duct is connected, and there is no problem in both the joint and the main body, and strong wind At times, no wind noise was generated.
In addition, the function of the watertight material (6) provided around the upper part of the duct joint prevents the small amount of rainwater that has entered from the exhaust port from entering the duct.
[0013]
Further, as shown in FIG. 4, if the ridge waterproofing member (9) with an exhaust pipe is used for the ventilation gap (7) of the ridge, the ventilation member for the ridge duct of the present invention is inserted from the lower part, and the main house (shown in FIG. 4). By using metal fittings, it can be applied to any type of ridge. That is, FIG. 5 is an explanatory view of the use state of the ridge waterproofing member (9) with an exhaust pipe and the ventilation member (1) for ridge duct for snow protection of a flat tile roofing material. The length X from the bottom plate to the tip of the exhaust port is different. Therefore, it is necessary to change the length of the exhaust pipe (2) of the ventilation member for the ridge duct in order to be able to accommodate all the ridges. Of course, the length of the exhaust pipe portion may be adjusted as described above. However, as shown in FIG. 4, if the exhaust pipe having the shape of the corresponding ridge section is used with the ridge waterproofing member (9) with the exhaust pipe, The ridge duct ventilation member (1) has a fixed shape and can be used in all ridges.
[0014]
Second Embodiment Hereinafter, a second embodiment of the ventilation member for a ridge part duct according to the present invention will be described with reference to FIG.
FIG. 6A is an overall perspective view of a ridge duct ventilation member according to a second embodiment of the present invention, FIG. 6B is a simplified side view of the ridge duct ventilation member, and FIG. It is a simplified front view of a ventilation member.
[0015]
As shown in FIG. 6, the ventilation member for a ridge duct of the present embodiment has an elongate shape at the end of the exhaust port having a width of about 50 mm, and a duct connection port (5) having a diameter of about 180 mm is provided at a lower portion to provide a gap therebetween. It has a shape connected by gentle curves. Even with the ridge duct ventilation member having such a shape, the ventilation from the duct is guided to the upper exhaust port without being hindered. It is preferable that the ventilation area across the exhaust port be as large as possible or larger than the cross-sectional ventilation area at the duct junction because the pressure loss is small and the ventilation volume can be secured.
In addition, the ridge duct of the present invention may have any shape, as long as the exhaust port has an elongated shape (not limited to a rectangular shape), a duct can be connected to the lower portion, and the area does not change suddenly. It is possible as a ventilation member.
As a result of performing a ventilation experiment using the ventilation member for a ridge duct according to the second embodiment of the present invention, substantially the same ventilation rate as in the first embodiment could be secured (100 to 180 m ³ / h).
[0016]
Also in the present embodiment, a watertight material (6) is provided around the connection portion of the duct joint on the bottom surface of the ventilation member for the ridge duct to prevent rainwater from entering from the exhaust port from entering the duct. It is possible.
[0017]
Further, also in this embodiment, similarly to the first embodiment, it may be directly attached to the ridge (FIG. 3) or may be attached to the ridge waterproofing member with an exhaust pipe as a set (FIG. 4). is there.
[0018]
【The invention's effect】
The present invention is a ventilation member for collecting indoor air with a duct as described above and opening it to the outside from the ventilation gap of the building, and has taken measures to prevent a change in the ventilation area as much as possible and waterproof measures, so that a duct with a large diameter can be used. Ventilation is exhausted from the narrow ventilation gap in the building without interruption. Further, since the ventilation flow passes through the duct, there is no danger of polluting the air behind the hut or scattering moisture on the back of the hut. The invention can be applied to any roofing material by adjusting the length of the exhaust tube in accordance with the combination with the ridge waterproofing member with an exhaust tube or the shape of the ridge.
In addition, if the ventilation member for a ridge duct of the present application is used, ventilation from the ridge can be performed without any change in the appearance of the ridge, and a sufficient ventilation volume can be secured.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a ridge duct ventilation member according to a first embodiment of the present invention; FIG. 2 is a partially enlarged sectional view showing a waterproof state inside the ridge duct ventilation member according to the first embodiment of the present invention; FIG. 4 is an explanatory view illustrating a method of installing a ridge duct ventilation member according to the first embodiment of the present invention. FIG. 4 is an explanatory view illustrating another method of installing a ridge duct ventilation member according to the first embodiment of the present invention. FIG. 6 (a) is an overall perspective view of a ventilation member for a ridge duct according to a second embodiment of the present invention. FIG. 6 (a) is an overall perspective view of a ventilation member for a ridge duct according to a second embodiment of the present invention. Simplified side view (c) Simplified front view [FIG. 7] (a) Explanatory drawing of conventional ridge part (b) Explanatory drawing of conventional ridge part (c) Explanatory drawing of conventional outer wall vent [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Ventilation member for ridge duct 2 Exhaust cylinder 2a Exhaust port cross-sectional area 3 Body 4 Bottom 5 Duct junction 5a Duct junction cross section 6 Watertight material 7 Building ventilation gap 8 Purlin 9 Building ridge waterproofing member 10 with exhaust Ventilation member for curved ridge section duct 11 Field board 13 Duct 14 Water gradient 15 Exterior wall 16 Outdoor hood

Claims (3)

A ventilation member for a ridge duct, which is inserted into the ventilation gap between the baseboards of the ridge from the back of the hut and installed,
Look including a body portion having a wide bottom having a duct junction port in the bottom in longitudinal section the lower open type and cross-sectional oblong shape of the exhaust port,
A ventilation member for a ridge part duct, wherein the body is gradually narrowed so as to take a gentle change so that there is no sudden change in the ventilation area from the bottom to the top. A ventilation member for a ridge duct, which is inserted into the ventilation gap between the baseboards of the ridge from the back of the hut and installed,
The upper and lower openings are characterized by having an exhaust port with a horizontally long cross section at the top and a duct junction at the bottom, with a gentle slope between them to prevent a sudden change in area . Ventilation member for ridge duct. The ventilation member for a ridge duct according to claim 1 or 2, wherein a cross-sectional area of the exhaust port of the ventilation member for a ridge duct is equal to or larger than a cross-sectional area of the duct junction.

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