JP4902312B2 - Roof ventilation structure - Google Patents

Description

  The present invention relates to a roof ventilation structure provided in an upper part of a building body.

Conventionally, a heat insulating material such as glass wool is laid on the upper surface of the ceiling board in order to ensure the heat insulating property of the indoor space. In addition, a ventilation space is provided at the joint where the ceiling and the roof intersect for ventilation of the hut space.
However, if the thickness of the heat insulating material laid on the top surface of the ceiling plate is increased in order to improve the airtightness and heat insulating properties of the house, the portion where the ceiling and the roof intersect with each other is blocked by the heat insulating material. There was a case where a ventilation space for ventilation of the back space could not be secured.

Therefore, a technique for forming an air passage that is not blocked by a heat insulating material by arranging an eaves side heat shield at a predetermined interval between the back side of the roof base plate at the eaves part of the roof is known. (For example, refer to Patent Document 1).
According to such a technique, the ceiling height of the room located immediately below the attic space can be set high, and the roof can be ventilated without stagnation. In addition, it is possible to efficiently prevent the intrusion of heat into the room by the synergistic effect of the heat shielding action by the heat shielding material, the heat insulation action by the ceiling heat insulating material, and the heat radiation action by allowing air to pass through the air passage. It has become.
JP 2006-074420 A

  However, especially in the summertime, the roof continues to be exposed to strong sunlight during the daytime. Therefore, ventilation cannot catch up simply by passing air through the air passages as described above, and hot air may accumulate in the attic space. . And when hot air accumulates in this way, the hot air is gradually transmitted into the room, and there has been a desire to increase the ventilation rate of the attic space.

  An object of the present invention is to provide a roof ventilation structure capable of forming a comfortable living space even in summer by increasing the ventilation amount of the attic space.

In the invention according to claim 1, for example, as shown in FIG. 1 to FIG. 2 , a flat roof is provided on the upper part of the building body 1 ,
A heat insulating material 3 is provided on the back side of the roof 2, and a ceiling heat insulating material 5 is provided on the upper surface of the ceiling 4. A ventilation space 6 is formed between the heat insulating material 3 and the ceiling heat insulating material 5. Has been
The ventilation space 6 is provided so as to protrude 2 or al upper roof is continuous ventilation tower 7 for discharging the warm air accumulated within said vent space 6 to the outside,
In the vicinity of the ventilation space 6, an air intake port 8 that communicates the inside and outside of the ventilation space 6 is provided.
The air intake 8 is provided adjacent to the building body 1 and is open facing the wind tunnel 9 for raising air along the vertical direction of the building body 1.
This wind tunnel part 9 raises air along the up-and-down direction of the building body 1 and discharges it to the outside, and a blowing path 9B for taking outside air and blowing it into the rising path 9a. Are formed as a substantially L-shaped space .

According to invention of Claim 1, since the ventilation space 6 formed between the said heat-insulating material 3 and the ceiling heat insulating material 5 is following the said ventilation tower 7, to a place where warm air is higher the constantly warm air ventilated space 6 can be sent to the ventilation column 7, it can be easily and reliably discharged through the ventilation column 7 by utilizing the property that rises with. That is, it is possible to discharge the ventilation tower seven et aggressively higher temperature air, can be compared with the prior art, thereby remarkably increasing the ventilation of the attic space. This prevents hot air from accumulating in the ventilation space 6 and reliably prevents the hot air from being transmitted indoors, so that a comfortable living space can be formed even in summer.
In addition, since an air intake port 8 is provided in the vicinity of the ventilation space 6 so as to communicate the inside of the ventilation space 6 with the outside, the outside air can be reliably passed from the air intake port 8 into the ventilation space 6. Therefore, natural ventilation of the attic space through the ventilation tower 7 can be promoted.
Further, since the warm air in the wind tunnel portion 9 can always be lifted and discharged sequentially by utilizing the property that warm air rises to a higher place, a rising air current can be generated in the wind tunnel portion 9. it can. Therefore, in the wind tunnel portion 9, warm air is discharged, and at the same time, the air from below, which is relatively cooler than the warm air, can be raised by being multiplied by the ascending current. That is, by opening the air intake 8 facing the wind tunnel 9, relatively cool air rising along the building body 1 in the wind tunnel 9 can be taken into the ventilation space 6. Therefore, natural ventilation of the attic space through the ventilation tower 7 can be further promoted, and the temperature of the attic space can be lowered.

In addition, since the ventilation tower 7 is provided on the roof 2 so as to be continuous with the ventilation space 6 and natural ventilation is performed in this way, the ventilation amount of the attic space can be significantly increased. Since power such as electric power is not used as in a ventilator such as an electric fan, for example, energy saving and cost reduction are possible.
Moreover, since the ventilation | gas_flowing state in the said ventilation space 6 can always be hold | maintained, heat does not accumulate in a hut space, and generation | occurrence | production of dew condensation can be prevented also in winter.

According to a second aspect of the invention, for example, as shown in FIG. 2, in the ventilation structure of the roof 2 according to claim 1,
The roof 2 is therefore configured to building the roof panel 1 2, the building roof panel 1 2, the upper surface of the rectangular frame 12 a formed by assembling the rail members 12 b in a rectangular frame shape, surface material comprising a sheathing 12 c is attached,
The ventilation space 6 is formed using the inside of the rectangular frame 12a.

According to the invention described in claim 2, since the roof 2 is therefore configured to building the roof panel 1 2, in the building roof panel 1 2, be left in advance the heat shielding member 3 attached it is possible, wherein, when the building body 1 is those composed of building panel 1 2 roof 2 the same quality, it working efficiency is good since it is easily connected to the building body 1 and the roof 2.

Further, since the ventilation space 6 is formed using the inside of the rectangular frame 12a, it is not necessary to secure an installation space for the ventilation space 6 again when the ventilation space 6 is formed. since, correspondingly, it is possible to set a higher ceiling diplomatic room located below the attic space.

  According to the present invention, since the ventilation space formed between the heat shielding material and the ceiling heat insulating material is continuous with the ventilation tower, by utilizing the property that warm air rises to a higher place. Warm air in the ventilation space can always be sent to the ventilation tower and can be easily and reliably discharged through the ventilation tower. That is, since air with higher temperature can be more actively discharged from the ventilation tower, the ventilation amount in the cabin space can be significantly increased as compared with the conventional case. This prevents hot air from accumulating in the ventilation space and reliably prevents the hot air from being transmitted into the room, so that a comfortable living space can be formed even in summer.

  Embodiments of the present invention will be described below with reference to the drawings. The building of the present embodiment is constructed by a panel method in which building components such as walls, floors, and roofs are panelized at the factory in advance, and these building panels are assembled and constructed at the construction site. The present invention can also be applied to buildings such as conventional frame construction methods and wall-type construction methods such as wooden structures, steel structures, and reinforced concrete structures.

  Although not shown in the drawing, this building panel is assembled in a rectangular frame shape, and a frame is constructed by assembling auxiliary hook materials vertically and horizontally inside the rectangular frame. A face material is pasted on both sides or one side of the material, and has a hollow structure inside. Furthermore, a heat insulating material such as glass wool or rock wool is usually loaded into the hollow interior portion.

As shown in FIGS. 1 and 2, the ventilation structure of the roof 2 according to the present embodiment is provided with a heat shield 3 on the back side of the roof 2 provided on the top of the building body 1 and the top surface of the ceiling 4. Is provided with a ventilation space 6 between the heat shield 3 and the ceiling insulation 5, and the ventilation space 6 protrudes upward from the roof 2. It continues to a ventilation tower 7 for discharging warm air accumulated in the ventilation space 6 to the outside.

  Here, the building body 1 has a concave portion 9a in which a part of the outer wall surface over the upper and lower floors is recessed toward the indoor side with respect to the other outer wall surface, and a garage 9b formed laterally at the lower end portion of the concave portion 9a. A substantially L-shaped space can be formed by the recess 9a and the garage 9b. That is, this substantially L-shaped space is a wind tunnel portion 9 (described later).

  The roof 2 is constituted by a building roof panel 12, and this building roof panel 12 has a face plate 12c serving as a field plate attached to the upper surface of a rectangular frame 12a formed by assembling the roofing material 12b into a rectangular frame 12a shape. It is formed, and such a roof panel 12 for construction is assembled in a land roof shape with almost no inclination.

  In addition, as shown in FIG. 2, the heat shield 3 is attached to the back surface of the face material 12 c of the roof 2, and the ceiling heat insulating material 5 is provided on the upper surface of the ceiling 4. The ventilation space 6 is formed between the material 5.

The ventilation space 6 is formed by using the inside of the rectangular frame 12a, and the roof 2 is constituted by the building roof panel 12, so that the building roof panel 12 is shielded in advance. The heat material 3 can be attached, and the building body 1 and the roof 2 can be easily connected when the building body 1 is composed of building panels of the same quality as the roof 2. So work efficiency is good.
Further, since the ventilation space 6 is formed by using the inside of the rectangular frame 12a, it is not necessary to secure an installation space for the ventilation space 6 when the ventilation space 6 is formed. Accordingly, the ceiling height of the room located below the attic space can be set higher.

  In addition, an air intake port 8 is provided in the vicinity of the ventilation space 6 so as to communicate the inside of the ventilation space 6 with the outside. As a result, external air is passed from the air intake port 8 into the ventilation space 6. Since it can be taken in with certainty, natural ventilation of the attic space through the ventilation tower 7 can be promoted.

Next, as shown in FIG. 2, the ventilation tower 7 includes a ventilation tower main body 70 protruding upward from the roof 2, a ventilation cylinder 714 protruding upward from the upper surface of the ventilation tower main body 703, and the ventilation tower main body. 70 and a ventilation tower cover 72 covering the ventilation cylinder 71.
Such a ventilation tower 7 is erected on the outer peripheral edge of the opening 73 formed on the flat roof 2 surface, and is tightly connected to the roof 2 by a steel gusset (not shown).

  Further, the ventilation tower 7 is constructed by assembling a wooden rectangular plate-like structural panel into a square cylinder and horizontally fixing a similar structural panel to the upper end opening thereof. Has been. A rectangular hole 74 is formed in the structural panel fixed horizontally.

  Further, the ventilation cylinder 71 is formed in a square cylinder shape, and is inserted and fixed with its lower end aligned with the lower end of the hole 74. The upper part of the ventilation cylinder 71 protrudes upward from the upper surface of the ventilation tower body 70, and a hood 75 is attached to the upper end opening of the ventilation cylinder 71, and the upper end opening of the ventilation cylinder 71 is closed by the hood 75. The peripheral wall 75a of the hood 75 is separated from the upper end outer peripheral wall 71a of the ventilation cylinder 71, and a large number of vent holes 71b are formed at predetermined intervals in the circumferential direction in the upper end outer peripheral wall 71a of the ventilation cylinder 71 facing the peripheral wall 75a. ing.

  On the other hand, as shown in FIG. 1, the ventilation tower body 70 is provided with a ventilation tower cover 72 that covers the upper end portion of the ventilation tower body 70 and the ventilation cylinder 71. As shown in FIG. 5, the ventilation unit 72a extends along the peripheral wall of the ventilation tower cover 72 and opens downward. Further, the ventilation portion 72 a communicates with the inside of the ventilation tower cover 72.

Therefore, the air that has risen in the ventilation cylinder 71 is blown out from the vent hole 71b, and further blows out from the ventilation section 72a through the inside of the ventilation tower cover 72. That is, the air in the cabin space can be passed through the inside of the ventilation tower cover 72 and discharged from the ventilation part 72a to the outside.
In addition, since the ventilation part 72a is opened downward, the wind and rain that is about to flow into the back of the hut is first changed in the direction of the ventilation part 72a at the position of the ventilation part 72a. Immediately thereafter, the direction must be changed in the horizontal direction before flowing into the ventilation tower cover 72. And since the inflow speed of a storm falls while reaching the said vent hole 71b, the inflow of a storm into the back of a hut can be prevented.

  A dew condensation preventing heat insulating material 76 is provided between the back surface of the ventilation tower cover 72 and the front surface of the hood 75. In addition, an outer wall material 77 is attached to the outer peripheral wall of the ventilation tower body 70, and a refractory material 78 such as a gypsum board is attached to the inner peripheral wall. The lower end portion of the refractory material 78 extends to the inner peripheral surface of the opening 73 formed in the roof 2 and is fixed to the inner peripheral surface.

  On the other hand, the wind tunnel portion 9 uses the property that warm air rises to a higher place, so that the warm air in the wind tunnel portion 9 is always raised and discharged sequentially, and the ascending air current in the wind tunnel portion 9 is discharged. Is generated. Thereby, in the wind tunnel part 9, while warm air is discharged | emitted, the air from the downward | lower direction comparatively cooler than this warm air can be multiplied by an updraft, and can be raised now.

The concave portion 9a is a rising path 9a for raising the air along the vertical direction of the building body 1 and discharging it to the outside. The garage 9b takes outside air and blows it into the rising path 9a. It is the blowing route 9b for making it.
As a result, it becomes easy to take in the wind that blows in the lateral direction or the oblique direction into the blowing path 9b, so that the taken-in external air can be reliably blown into the ascending path 9a.

  As shown in FIG. 1, a plurality of rooms 13, 14, 15, 16, and 17 are arranged along the wind tunnel portion 9, and the plurality of rooms 13, 14, 15, 16, and 17 are There are provided openings 13a, 14a, 15a, 16a, 17a facing the wind tunnel 9 and windows 13b, 14b, 15b, 16b, 17b facing the openings 13a, 14a, 15a, 16a, 17a. As a result, the air rising in the wind tunnel 9 can be taken in efficiently, and natural ventilation of the plurality of rooms 13, 14, 15, 16, and 17 can be promoted.

The air intake 8 is open facing the wind tunnel 9. That is, as shown in FIG. 2, an air intake tubular body 8 a is installed through the end of the building roof panel 12 from the wind tunnel 9 side end to the outer wall material facing the wind tunnel 9. In addition, the inside of the ventilation space 6 and the wind tunnel portion 9 are communicated with each other.
In this way, the air intake 8 is opened to face the wind tunnel portion 9, so that relatively cool air rising along the building body 1 in the wind tunnel portion 9 can be taken into the ventilation space 6. Therefore, natural ventilation of the attic space through the ventilation tower 7 can be further promoted, and the temperature of the attic space can be lowered.
In addition, since the air intake state can be reliably maintained by the air intake port 8, heat is not accumulated in the cabin space, and for example, the occurrence of condensation can be prevented even in winter.

  Moreover, since the ventilation of the attic space can be efficiently ventilated in this way, the heat dissipation effect of the roof 2 can be obtained, and the heat dissipation effect, the heat shield effect by the heat shield 3 and the heat insulation by the ceiling heat insulator 5 can be obtained. Due to the synergistic effect with the action, it is possible to efficiently prevent the heat from entering the room located below the attic space.

  According to the present embodiment, since the ventilation space 6 formed between the heat insulating material 3 and the ceiling heat insulating material 5 is continuous with the ventilation tower 7, warm air rises to a higher place. By taking advantage of the nature, the warm air in the ventilation space 6 can always be sent to the ventilation tower 7 and can be easily and reliably discharged through the ventilation tower 7. That is, since air with higher temperature can be actively discharged from the ventilation tower 7, the ventilation amount in the cabin space can be significantly increased as compared with the conventional case. This prevents hot air from accumulating in the ventilation space 6 and reliably prevents the hot air from being transmitted indoors, so that a comfortable living space can be formed even in summer.

  In addition, since the ventilation tower 7 is provided on the roof 2 so as to be continuous with the ventilation space 6 and natural ventilation is performed in this way, the ventilation amount of the attic space can be significantly increased. Since power such as electric power is not used as in a ventilator such as an electric fan, for example, energy saving and cost reduction are possible.

Ventilation building structure of the present invention is a cross-sectional view showing a form of engagement Ru implementation. It is an expanded sectional view which shows the roof and ventilation tower which were provided in the upper part of the building main body.

Explanation of symbols

1 Building body 2 Roof 3 Heat shield 4 Ceiling 5 Ceiling insulation 6 Ventilation space 7 Ventilation tower 8 Air intake

Claims (2)

There is a flat roof on the top of the building body ,
A heat insulating material is provided on the back side of the roof, a ceiling heat insulating material is provided on the upper surface of the ceiling, and a ventilation space is formed between the heat insulating material and the ceiling heat insulating material,
This ventilation space is provided so as to protrude upward from the roof, and continues to a ventilation tower that discharges warm air accumulated in the ventilation space to the outside .
In the vicinity of the ventilation space, an air intake port that communicates the inside and outside of the ventilation space is provided,
The air intake is provided adjacent to the building body, and is opened facing the wind tunnel for raising air along the vertical direction of the building body,
The wind tunnel includes a rising path for raising air along the vertical direction of the building body and discharging it to the outside, and a blowing path for taking outside air and blowing it into the rising path. A roof ventilation structure characterized by being formed as a substantially L-shaped space . The roof ventilation structure according to claim 1 ,
The roof is constituted by a building roof panel, and the building roof panel is formed by attaching a face material to be a field plate on the upper surface of a rectangular frame obtained by assembling a frame material into a rectangular frame shape,
The ventilation structure of the roof, wherein the ventilation space is formed using the inside of the rectangular frame.

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