JPS5925125B2 - Roof structure of residential building - Google Patents

Description

Detailed Description of the Invention For example, in a roof structure such as a gable roof, which has sloped surfaces on both the left and right sides of the ridge when viewed from the gable direction, the direction of the building, the season,
Although there are some changes depending on the time of day, one roof slope surface becomes a wide sunny surface, and it is possible to avoid a temperature difference between it and the other roof slope surface on the shaded side. This can lead to variations in the cooling and heating load on the roof, hindering comfortable cooling and heating, and in the winter, water droplets condensing in the attic on the high-temperature side slope fall onto the ceiling, which can reduce livability. Become.

Another object of the present invention is to improve the livability of a residential building having a roof structure in which a temperature difference occurs between the left and right slopes due to the orientation of the building, the season, the time of day, etc.

An embodiment of the present invention will be described based on the drawings. As shown in FIG. 1, a roof 2 has sloped surfaces 2 a' and 2 b on both left and right sides of a ridge 1 located in the east-west direction, as shown in FIG. 1. A plate material 2 having the same or almost the same slope surface as the roof 2 is provided at the bottom to create a double roof structure, with both sides 2
, 2' is configured as a ventilation path 3.

An air supply port 4 communicating with the ventilation path 3 is provided below the shaft portion 2a' of the north slope surface 2a, and an air supply port 4 communicating with the ventilation path 3 formed below the south slope surface 2b is provided with the slope surface 2b. A partition plate 5 along the eaves section 2b' is provided to divide the ventilation passage 3 into two layers, upper and lower, and these two layers are communicated with each other only at the eaves section 2b'.

The upper layer ventilation passage 3 has its sloping upper end open to the atmosphere through an exhaust port 6 provided at the upper end of the end wall.

According to the above embodiment, the sunny slope surface 2b is heated by solar heat, and the air in the upper ventilation path 3 portion divided by the partition plate 5 is warmed, so that it rises due to the density difference and flows out from the exhaust port 6. It is discharged into the atmosphere, and along with this, the cold outside air under the eaves is sucked from the air inlet 4 into the ventilation path 3 below the slope surface 2a, creating an airflow due to a draft as shown by the arrow, and ventilating the attic. will be carried out.

Therefore, in the summer, the attic on the south side is cooled by the cold outside air under the eaves on the north side, improving livability.

In winter, when the outside temperature is low and the temperature is lower than the air in the attic, which is warmed by indoor heating, condensation may occur in the attic. Since airflow is generated, dew condensation can be suppressed, and even if condensation does occur, since the roof has a double roof structure, inside and outside, water droplets will be guided to the eaves along the top surface of the board 2'. Prevents water droplets from falling onto the ceiling.

Therefore, livability can be improved from this aspect.

FIG. 2 shows another embodiment, in which an air supply opening 4 for the ventilation path 3 is provided under the eaves of the sloped surface 2a on the shaded side in a double roof structure similar to the above-mentioned case. Slope surface 2
An exhaust port 6 from the ventilation path 3 is provided under the eaves of b, and the cold outside air from the area under the eaves on the shaded side is transferred to the air supply port (or exhaust port) from the ventilation path 3.
A fan F for forced ventilation is provided to draw air into the air and discharge it from the exhaust port 6.

This embodiment also provides the same effects as those of the above-mentioned embodiments.

Components that are the same as those in the embodiment shown in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted.

In FIG. 3, the forced ventilation fan F is configured to be an air supply/exhaust switching type by changing the rotation direction, and the rotation direction of the fan F is changed depending on the summer and winter seasons. By supplying cold outside air and exhausting it to the sunny side, and in winter, supplying warm outside air from the sunny side and exhausting it to the shaded side, we have developed an example that improves livability in terms of both cooling and heating. show.

Further, if the ridge 1 is oriented in the north-south direction, it is also possible to configure and implement the rotation direction of the fan F to be switched between morning and afternoon.

As described above, the roof structure of a residential building according to the present invention has sloped surfaces 2a and 2b at the lower part of the roof 2, which have sloped surfaces 2a and 2b, respectively, from the ridge 1 toward the slope downward on both the left and right sides when viewed in the gable direction. , 2b forms a ventilation path 3 that communicates integrally with the eaves portions 2a' and 2b' below the slope, and directs the airflow taken in from the area under the eaves of one slope surface 2a or 2b into this ventilation path 3. It is characterized in that it is configured such that it can flow through the eaves portion 2b' or 2a'K of the other sloped surface 2b or 2a and then be discharged to the outside.

Therefore, one sloped surface 2b or 2a is located on the sunny side and the other sloped surface 2a or 2b is located on the shaded side, and both 2b,
Even if there is a temperature difference between 2a, cold outside air under the eaves on the shaded side or warm outside air under the eaves on the sunny side is sucked into the ventilation path 3 and allowed to flow to the other eaves 2b' or 2a'. By discharging the dust to the outside, the temperature distribution in the attic can be made as uniform as possible, making it possible to improve livability in terms of comfortable cooling and heating and prevention of condensation.

[Brief explanation of the drawing]

The drawings show an embodiment of the roof structure for a residential building according to the present invention, and FIG. 1 is a schematic sectional view, and FIGS. 2 and 3 are schematic sectional views showing other embodiments. 1... Building, 2... Roof, 2a, 2b.
... Slope surface, 2a', 2b' ... Eave part, 3 ... Ventilation path.

Claims (1)

[Scope of Claims] 1. At the lower part of the roof 2, which has sloped surfaces 2a and 2b, respectively, extending downward from the ridge 1 on both the left and right sides when viewed in the gable direction,
The lower shaft portion 2a's of both inclined surfaces 2a, 2b
2b' is formed, and the airflow taken in from the under-eaves of one sloped surface 2a or 2b is passed through this ventilation path 3 to the other sloped surface 2b or 2a. 1. A roof structure for a residential building, characterized in that the roof structure is configured such that the fluid can flow to the shaft portion 2b' or 2a' and then be discharged to the outside. 2. The ventilation path 3 has both slopes 2a and 2b.
Cold air is sucked in from under the eaves of the sloped surface 2a on the shaded side, and this sucked cold air is transferred to the shaft portion 2b' of the sloped surface 2b on the sunny side.
2. The roof structure of a residential building according to claim 1, wherein the roof structure is configured such that the fluid is allowed to flow to a maximum temperature and then discharged to the outside. 3. The ventilation path 3 has two inclined surfaces 2a and 2b,
A patent that is configured to suck hot air from under the eaves of a sloped surface 2b on the sunny side, flow the hot air to the shaft portion 2a' of the sloped surface 2a on the shaded side, and then discharge it to the outside. A roof structure for a residential building according to claim 1. 4 Of the ventilation passages 3, the portion of the ventilation passage 3 located below the slope surface 2b on the sunlight side is the shaft portion 2b of the slope surface 2b.
The upward flow path extends from near the ridge 1 to the ridge 1, and the downward flow path extends from near the ridge 1 to the shaft portion 2b'. As the air rises due to the density difference in the rising flow path, cold air is sucked in from under the eaves of the sloped surface 2a on the shaded side.
The roof structure of a residential building according to claim 1, wherein the intake cold air is made to flow to the shaft portion 2b' and then discharged to the outside from near the ridge 1.