JPS62123240A - Ventilation system for indoor of dwelling structure - Google Patents

Abstract

PURPOSE:To promote a ventilation within a building structure, prevent the invasion of dew and fungus and increase a durability of a building by a method wherein spacings within dwelling structure such as under-floor space, inner wall space and partition wall space are communicated to each other, an outdoor weather condition is detected by a sensor, and both attic ventilation port or the building and the under- floor ventilation port are automatically opened or closed. CONSTITUTION:In a building, structures such as foundation, columns and roof rafter or the like are completely covered with heat insulation material 8. In order to perform a sufficient vertical ventilation within a structure, an inner wall space 4 and a partition wall space 5 are assured, and each of them is communicated with an under-floor pace 3, an enclosed space 6 between the first and second floors and an attic space 7, respectively. Under-floor ground surface is provided with a soil cover and a ground concrete in order to prevent damp air. The attic ventilation port 1 is located at a high position of a roof and under-floor ventilation ports 2 are fixed to a continuous footing with a spacing of about 4m. A sensor 10 is fixed to a roof to detect an outdoor air temperature, humidity and sun shine or the like, and to control an automatic opening or closing of the small room ventilation port 1 and the under-floor ventilation port 2.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to ventilation of spaces within building structures. Conventional shed ventilation and under-floor ventilation in buildings generally involve installing insulation materials such as glass wool in the interior wall cavities, partition wall cavities, under-floor surfaces, and ceiling surfaces, so there is little ventilation within the walls and the hut space, Although each underfloor space is independently ventilated, the ventilation area is small compared to the volume of the shed space and underfloor space, and because the ventilation is horizontal with little difference in height, sufficient ventilation is not performed, resulting in humidity from the ground surface under the floor. Humidity from everyday life Humidity from outside can cause internal condensation, which can corrode the foundations of fixtures, shorten the lifespan of the building, and cause mold to grow in closets, etc. j Therefore, as shown in Figure 1, insulation material (8) is placed on the outside of the structure such as the foundation, pillars, roof rafters, etc., completely covering the building and insulating it.
), buildings are emerging that attempt to prevent condensation and mold by ensuring a partition wall cavity (5) and allowing air to flow from the under-floor space (3) to the shed space (7) to control humidity and prevent condensation and mold. However, there were still problems and the prevention of condensation and mold was not perfect. When I wondered why, I realized that there was a shed ventilation opening (1
)・There is an underfloor ventilation opening (2), which is generally said to provide sufficient ventilation and release moisture to prevent condensation and mold.However, in winter, on the contrary, the cold outside is forced into the inner wall cavity. (4
) flowing inside the structure, the interior base material (9) is cooled, resulting in a lower dew point temperature and problems such as easy condensation in humid areas such as closets. Furthermore, the flow of outside cold air through the inner wall cavity (4) etc. lowers the room temperature, worsening the living environment, and also causes problems other than humidity, such as requiring a large amount of heating energy. Even during the rainy season, when the outside air is humid, there is a problem in that the moisture infiltrates into the building. In order to solve the problem of humidity in winter, close the shed ventilation opening (1) and underfloor ventilation opening (2) in winter to prevent cold air from entering the building and reduce the temperature of the spaces inside the structure such as the underfloor space (3). It is better to keep it high.

This is because if the absolute humidity inside the structure is the same,
This is because the kneading temperature increases and the humidity decreases, reducing the risk of condensation. Temperature 5 in the underfloor space where the ventilation opening is open
When the temperature and relative humidity are 85%, cold air from outside enters and the temperature rises to 3.
If the temperature is low, the relative temperature will be about 100% and there is a high risk of condensation. On the other hand, if you close the ventilation vents to prevent the temperature of the spaces inside the structure, such as the space under the floor, from dropping and maintain the temperature at 8 degrees, which is 3 degrees higher due to the heat of the ground surface, the relative humidity will decrease by about 15% to 70% and condensation. There is no longer any danger of doing so. Of course, the higher the temperature inside the structure, the greater the risk of attracting moisture, so it is a natural assumption that measures must be taken to prevent moisture from entering the subfloor and from entering the bathroom. It is a condition.

Looking at it this way, when considering the ideal ventilation method inside the housing structure, firstly, in the summer, open the shed ventilation opening (1) and the underfloor ventilation opening (2) to ensure prompt ventilation inside the structure. In the winter, the ventilation openings (1) and (
2) Closed to keep the temperature inside the structure uniformly high and reduce the relative humidity. Second, during the winter months when the humidity is low and the temperature is high during sunny days, the ventilation holes (1) and (2) are opened and the accumulated water vapor is gradually released to the outside.

Thirdly, during the rainy season, vents (1) and (2) are closed during rainy weather to prevent external moisture from entering the structure, and vents (1) and (2) are opened during sunny weather. to release moisture from the structure to the outside.

The present invention provides a ventilation system that satisfies the above three points.

Figure 1 shows a first example of a cross section of a building in which the present invention is implemented. FIG. 2 shows a second embodiment.

To explain the present invention based on Fig. 1, the building has insulation material (
8) completely covers the outside of the structure, including the foundation, pillars, and roof rafters. In addition, the inner Q cavity (4) and partition wall cavity (5) are secured to ensure sufficient air exchange inside the structure, and the space under the floor (3), the twelfth floor chest space (6), and the hut space ( 7) and are mutually connected. A soil cover and concrete floor have been installed on the subfloor to prevent moisture. The shed ventilation opening (1) is installed high on the roof. Underfloor ventilation holes (2) are installed on the fabric foundation at intervals of about 4 meters. The sensor (10) is attached to the roof panel, etc., and senses outside temperature, humidity, solar radiation, etc., and instructs the automatic opening and closing of the shed ventilation opening (1) and the underfloor ventilation opening (2). As mentioned on the previous page, by controlling opening and closing in summer and winter, opening on sunny days in winter, and opening on sunny days during the rainy season, we promote ventilation within the building structure and prevent condensation and mold, thereby increasing the durability of the building. It increases sexuality and contributes to the health of the people who live there.

The second embodiment is an example in which the present invention is implemented in a PAC (passive air cycle) house. PAC housing is a construction method that uses natural energy to increase the durability of buildings, while at the same time contributing to the health of residents by reducing temperature differences within the building. By incorporating the invention, the effects of the present invention and the effects of the PAC house will also be increased.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention. FIG. 2 is a sectional view of the second embodiment. 1 is the cabin ventilation opening, 2 is the underfloor ventilation opening, 3 is the underfloor space, 4 is the inner wall cavity, 5 is the clonic LfI wall cavity, 6 is the twelfth floor bosom space, 7 is the cabin space, 8 is the insulation material, 9
is the interior base material, 10 is the sensor, 11 is the air damper,
12 is a roof damper, 13 is an air intake port, 14 is a PA
C underfloor ventilation port 15 is a PAC shed ventilation port Patent applicant: Representative director of Air Cycle Sangyo Co., Ltd.
Akira Tanaka

Claims (1)

[Claims] Sensors detect the weather conditions in the outside world and automatically open and close the building's shed ventilation openings (1) and underfloor ventilation openings (2) to open and close underfloor spaces (3), interior wall cavities (4), and partition wall cavities. (5),
A system that controls the ventilation of spaces within a housing structure that are connected to each other, such as the 12th floor comfort space (6) and the hut space (7).