JP4744227B2 - Temperature rise suppression mechanism of building outer wall - Google Patents

Description

  The present invention relates to a temperature rise suppression mechanism for a building outer wall.

  In order to prevent the intrusion of heat from the outer wall of the building and reduce the air conditioning load, it is desirable to configure the outer wall with a material having a low heat transmissivity, but such a material generally has a low specific gravity and a low strength. , Not used in general.

Therefore, for example, Patent Document 1 proposes a method of covering a building wall or the like with an outer heat insulating outer wall structure in which a heat insulating material is combined with the outer wall structure.
JP 2002-294893 A

However, the method of covering the walls of buildings with heat insulating materials is not common because it causes high costs. In particular, in the case of steel frames, it is necessary to pay attention to condensation due to heat bridges.
Therefore, the present invention aims to solve such a conventional problem.

To achieve the above object, the present invention, first, the installing an outer wall having a water retention on the outside of the outer wall structure of a building, and installing a water guide line for supplying water to this water retention outer wall, the water guide The system is composed of a water guide pipe arranged on the inner side of the outer wall structure, and a horizontal water guide pipe branched from the water guide pipe and penetrating the outer wall structure and projecting into the water retaining outer wall. In addition, a plurality of water supply holes are provided in the horizontal conduit, and a temperature rise suppression mechanism is proposed for the outer wall of the building connected to a tank that stores rainwater, reused water, and the like .

Further, in the present invention, an outer wall having water retention capacity is installed outside the outer wall structure of the building, and a water conveyance system for supplying water to the water retention outer wall is installed, and this water conveyance system is located inside the outer wall structure. A water guide pipe arranged on the water guide pipe, a lateral water guide pipe branched from the water guide water pipe and projecting into the water retaining outer wall through the outer wall structure, and connected to the horizontal water guide pipe, the water retaining capacity The second horizontal conduit is arranged along the outer wall, and a plurality of water supply holes are provided in the second lateral conduit, and the vertical conduit is a tank for storing rainwater, reused water, etc. A mechanism to suppress the temperature rise of the connected building outer wall is proposed.

In the present invention, it is proposed that a hydrophilic material such as a photocatalyst is attached to the surface of the water retaining outer wall in the above configuration.

  In the above configuration, in the present invention, the water retaining outer wall is maintained in a wet state by the water supplied by the water guide system. For this reason, when the water retaining outer wall surface is heated by the solar radiation in summer and the water evaporates, the heat of vaporization is taken away at that time, so that the temperature rise of the water retaining outer wall, and hence the temperature rise of the outer wall structure can be suppressed.

  The water supplied to the water retaining outer wall by the water conveyance system can be effectively used as rainwater or reused water mainly by using rainwater or reused water.

  By attaching a hydrophilic material to the surface of the water retaining outer wall, the wet range can be quickly expanded, and the water can be efficiently evaporated over a wide range. As this hydrophilic material, when a photocatalyst is used, the dirt substance is decomposed by its oxidation-reduction action and the dirt substance such as exhaust gas adhering to the surface is washed away by the self-cleaning action (self-cleaning) by the hydrophilicity. As a result, the cleaning cost can be reduced, and the aesthetics can be maintained at a low cost.

  The structure of the water conveyance system is appropriate as long as it can be uniformly supplied to the water retaining outer wall. However, the water conveyance system of the present invention does not supply water from the surface side of the water retaining outer wall, but supplies water from the inside. ， Can prevent water from splashing outside the building.

  In addition, in the present invention, if the configuration of the horizontal water guiding pipe in addition to the horizontal water guiding pipe is provided in the water retaining outer wall, the horizontal water guiding pipe penetrating the outer wall structure is not required, and the installation is easy. It can be easily applied to other buildings.

Next, an embodiment of the temperature rise suppressing mechanism for the building outer wall according to the present invention will be described.
First, FIG. 1 shows the overall configuration of the first embodiment of the present invention.
In these drawings, reference numeral 1 denotes a building, and 2 denotes an outer wall structure of the building 1. This outer wall structure 2 is the same as the outer wall structure of a normal building, and, for example, ordinary concrete is used.

  In the present invention, an outer wall 3 having water retention (hereinafter referred to as a water retaining outer wall 3) is installed outside the outer wall structure 2, and a water guide system 4 for supplying water to the water retaining outer wall 3 is installed. It is a feature.

The water retaining outer wall 3 can be made of, for example, a material used as a water retaining ceramic or a water retaining pavement, and for example, a material having the following properties can be used.
Water absorption: 10% or more Porosity: About 20-60% Bending strength: 1.5 N / mm ² or more Apparent specific gravity: About 1.0-2.0 g / cm ³ Water permeability: 2.3 × 10 ^-4 -1.1 × 10 ^-2 cm / About sec Thickness: Several centimeters to several tens of centimeters

Next, the water guide system 4 is intended to supply water to the water retaining outer wall 3 so that the water retaining outer wall 3 is uniformly moistened . In the embodiment shown in FIG. It is composed of a water guiding pipe 5a disposed inside the structure 2 and a horizontal water guiding pipe 5b branched from the water guiding water pipe 5a and projecting into the water retaining outer wall 3 through the outer wall structure 2. A plurality of water supply holes (not shown) are provided in the water guide pipe 5b, and the water guide pipe 5a is connected to a tank 6 for storing rain water, reused water, and the like. Reference numeral 7 is a valve, and a replenishment mechanism (not shown) for replenishing the water 6 in the tank 6 for storing rain water, reused water, etc., when the amount of stored water is insufficient due to long-term sunny weather or the like. ) Is installed.

  In the above configuration, in this embodiment, rainwater, reused water, etc. stored in the tank 6 for storing rainwater, reused water, etc. are led from the water guiding pipe 5a to the horizontal water guiding pipe 5b, and this horizontal water guiding pipe. Water is supplied into the water retaining outer wall 3 from the water supply hole formed in 5b. The supplied water spreads in the water retaining outer wall 3 and makes the water retaining outer wall 3 wet.

  Such water supply by the water guide system 4 can be performed by gravity dropping or by a pump using a solar cell or the like as a power source. In addition, the supply method can be performed every predetermined time by opening / closing control of the valve 7, for example, continuously in the daytime, or by an appropriate method.

  As described above, since the water retaining outer wall 3 is maintained in a wet state by water supplied from the water conduit 4, when the surface of the water retaining outer wall 3 is heated by solar radiation in summer, the water evaporates and vaporizes at that time. In order to take heat away, the temperature rise of the water retaining outer wall 3 can be suppressed, and therefore the temperature rise of the outer wall structure 2 can be suppressed. Thus, the air conditioning load in summer can be reduced.

FIG. 2 shows a second embodiment of the present invention. (A) is an enlarged view of a portion corresponding to the main part of FIG. 1, and (b) is an AA view of (a). FIG.
In this embodiment, a second lateral water conduit 5c along the water retaining outer wall 3 is provided at the tip of the lateral water conduit 5b in the first embodiment, and a plurality of water supplies are provided in the second lateral water conduit 5c. A hole (not shown) is provided. Since other configurations are the same as those in FIG. 1, the same reference numerals are given to corresponding components, and redundant description is omitted.

  In this configuration, the lateral uniformity of the water to be supplied is higher than that of the first embodiment, so that the entire water retaining outer wall 3 is uniformly moistened, thereby effectively. Can take away the heat of vaporization.

Next, FIG. 3 shows a third embodiment of the present invention. (A) is an enlarged view of a portion corresponding to the main part of FIG. 1, and (b) is a BB of (a). It is an arrow view.
In this embodiment, a water guide pipe 8a corresponding to the water guide pipe 5a of the first embodiment is arranged in the water retaining outer wall 3, and the horizontal water guide pipe 8b is branched from the water guide pipe 8a. A plurality of water supply holes (not shown) are provided in the horizontal water guide pipe 8b.

  In this embodiment, the lateral water guide pipe 5b penetrating the outer wall structure 2 that is necessary in the first and second embodiments is not required, so that the installation is easy and the existing building is also easy. Applicable.

Next, as a design example of the water retaining outer wall 3, a design example of a necessary thickness of the water retaining outer wall 3 when the water retaining ceramic having the following properties is used as the water retaining outer wall 3 will be described.
Water retaining outer wall 3: Water retaining ceramics (Water absorption: 10%, Apparent specific gravity: 1.8 g / cm ³ ) As weather conditions, total solar radiation is about 20 MJ / m ² days, maximum temperature is 30 ° C or higher, moisture If the evaporation amount of water is about 5 kg / m ² days, the required weight of the water retaining outer wall 3 to maintain this amount of evaporation is about 50 kg / m ² days, so the necessary thickness of the water retaining outer wall 3 is required. Is approximately 3cm (50kg / m ² ÷ 1800kg / m ³ = 0.0277m) due to its apparent specific gravity.

  In addition, when the above-described water retaining outer wall 3 is used, unevenness corresponding to the porosity is uniformly distributed on the surface, so that high evaporation performance due to an increase in surface area can be obtained, and rainwater directly In particular, the water retaining wall 3 absorbs water and replenishes water, or the sound insulation performance by absorbing external noise can be improved.

  Next, as described above, in the present invention, by attaching a hydrophilic material to the surface of the water retaining outer wall 3, the wet range can be quickly expanded, and the water can be efficiently evaporated over a wide range. Can do. In general, even when a hydrophilic material is attached to the surface of the water retaining outer wall 3, the surface irregularities and voids are not impaired and the evaporation of moisture is not hindered.

  If a photocatalyst is used as the hydrophilic material, the contaminants such as exhaust gas adhering to the surface of the water retaining outer wall 3 due to the decomposition of the contaminants due to the redox action and the self-cleaning action due to the hydrophilicity (self-cleaning). Rinse away. Therefore, the cleaning cost can be reduced, and the aesthetics can be maintained at a low cost.

  This hydrophilic material can be replenished in advance by adhering to the surface of the water retaining outer wall 3 by coating or the like, and can be replenished by being mixed with rainwater absorbed by the water guide system 4, and this replenishment makes it possible to maintain the above effect. .

  In the present invention, since the water retaining outer wall 3 can be maintained in a wet state as described above, moss or the like can be vegetated on the water retaining outer wall 3, and the water retaining outer wall 3 can be used as a base for wall greening. Can do.

  In the present invention, a preservative can be mixed and supplied to rainwater or reused water absorbed by the water guide system 4, and the antiseptic can be supplied periodically at appropriate intervals, so that the water retaining outer wall 3 can be supplied. Occurrence of mold and the like can be suppressed.

  Moreover, in this invention, a water absorption fiber can be contained in the inside of the water retaining outer wall 3, and by doing so, the water supplied to the inside of the water retaining outer wall 3 can be quickly moved to the surface and used for evaporation. it can.

  Moreover, in this invention, inorganic industrial wastes, such as a gypsum board, a brick, and rock wool, can be used as a raw material of the water retention outer wall 3, and the effective utilization can be aimed at.

  Moreover, in this invention, the construction property in the field by a panel construction method can be improved by making the water retention outer wall 3 into PC.

  In the present invention, when the surface of the water retaining outer wall 3 is a tile, the wet wall construction method can be applied.

Since the present invention is as described above, it has a number of features other than those shown below, and has great industrial applicability.
1. In the present invention, the water retaining outer wall is kept wet by the water supplied by the water conduit. For this reason, when the water-retaining outer wall is heated by solar radiation in summer and the water evaporates, the heat of vaporization is taken away at that time, so the temperature rise of the water-retaining outer wall, and hence the temperature rise of the outer wall structure, is suppressed. The load can be reduced.
2. The water supplied to the water retaining outer wall by the water conveyance system can be used effectively for rainwater and reused water mainly by using rainwater and reused water.
3. By attaching a hydrophilic material to the surface of the water retaining outer wall, the wet range can be quickly expanded, and the water can be efficiently evaporated over a wide range. In particular, when a photocatalyst is used as the hydrophilic material, the dirt substance is decomposed by its oxidation-reduction action and the dirt substance such as exhaust gas adhering to the surface is washed away by the hydrophilic self-cleaning action (self-cleaning). As a result, the cleaning cost can be reduced, and the aesthetics can be maintained at a low cost.
4). The structure of the water conveyance system is appropriate as long as it can be uniformly supplied to the water retaining outer wall. However, the water conveyance system of the present invention does not supply water from the surface side of the water retaining outer wall, but supplies water from the inside. ， Can prevent water from splashing outside the building.
5. In addition, if the water transmission system is configured with a horizontal water transmission pipe in addition to the horizontal water transmission pipe, the horizontal water transmission pipe that penetrates the outer wall structure is not required. It can be easily applied to other buildings.

The whole structure of 1st Embodiment of the temperature rise suppression mechanism of the building outer wall of this invention is shown. The principal part structure of 2nd Embodiment of the temperature rise suppression mechanism of the building outer wall of this invention is shown. The principal part structure of 3rd Embodiment of the temperature rise suppression mechanism of the building outer wall of this invention is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 External wall structure 3 Water retaining outer wall 4 Water transfer system 5a Water transfer pipe 5b Horizontal water transfer pipe 5c Second horizontal water transfer pipe 6 Tank 7 for storing rain water, reused water, etc. Valve 8a Water transfer pipe 8b Horizontal water transfer pipe

Claims (4)

An outer wall having water retention capacity is installed outside the outer wall structure of the building, and a water conveyance system for supplying water to this water retention outer wall is installed . This water conveyance system is installed in the inner wall of the outer wall structure. A water pipe and a horizontal water pipe branched from the vertical water pipe and penetrating the outer wall structure and projecting into the water retaining outer wall. The horizontal water pipe has a plurality of water supply holes, and vertical conduit temperature rise suppression mechanism of the building outer wall, characterized in that connected to the tank for storing rainwater and reuse water. An outer wall having water retention capacity is installed outside the outer wall structure of the building, and a water conveyance system for supplying water to this water retention outer wall is installed . This water conveyance system is installed in the inner wall of the outer wall structure. A water pipe, a horizontal water pipe branched from the water guiding pipe, penetrating the outer wall structure and projecting into the water retaining outer wall, and connected to the horizontal water guiding pipe and disposed along the water retaining outer wall The second lateral conduit is provided with a plurality of water supply holes, and the second conduit is connected to a tank for storing rainwater, reused water, etc. A feature to suppress the temperature rise of the outer wall of the building . The heat load reducing mechanism for an outer wall of a building according to claim 1 or 2 , wherein a hydrophilic material is attached to the surface of the water retaining outer wall. The thermal load reducing mechanism for an outer wall of a building according to claim 3 , wherein the hydrophilic material is a photocatalyst .

Images