JP2002106942A - Under-floor drying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an under-floor drying apparatus wherein warm air in a garret to heat portions under the floor, whereby corrosion of an under-floor structural member due to condensation and development of a white ant are prevented. SOLUTION: An air intake port 5 is provided in a garret 2, and an exhaust port 10 is provided under the floor 9 closed from the outside. The air intake port 5 and the exhaust port 10 are connected with each other through a duct 6, on which duct suction fan 3 is mounted. Further, a drain pipe 18 is attached to the duct 6 disposed under the floor 9, and condensation water 20 condensed in the duct 6 is drained to the outside of a building, and dried air is circulated from the garret 2 to under the floor 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor drying apparatus for a wooden house.

[0002]

2. Description of the Related Art Generally, the underfloor of the first floor of a wooden house is close to the ground and high in humidity, so that the base, bundles, pulling, floorboards, etc. are exposed to moisture over a long period of time, and termites are generated on the floorboards. There is a problem that the tatami that is in contact with is rotten. For this reason, it has been practiced to spread charcoal having a high hygroscopic property under the floor or to construct concrete under the entire floor.

[0003] However, outside air enters through the underfloor vents, which drops to about 6 ° C in winter and 15 ° C in summer.
Condensation occurred under the floor where the temperature was only low enough, and the condensed water droplets caused the wood to rot or generate termites, and the durability of the wooden house was low.

On the other hand, the roof is exposed to the heat of the sun, and the heat generated from electric appliances such as lighting rises and accumulates in the attic, and in summer, the temperature may be as high as 50 ° C. or more. For this reason, there has been a problem that the temperature in the room does not decrease even at night, and the cooling efficiency is poor even if a cooler is used.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an underfloor in which the underfloor structure is prevented from being corroded by dew condensation and the generation of termites by heating the underfloor using warm air in the attic. A drying device is provided.

[0006]

According to a first aspect of the present invention, there is provided an underfloor drying apparatus, wherein an intake port is provided in an attic and an exhaust port is provided under the floor which is sealed from the outside, and the intake port and the exhaust port are provided by ducts. In addition to the connection, a suction fan is attached to this duct, and a drain pipe for draining water condensed inside the pipe to the outside of the building is provided in a duct piped under the floor.

The underfloor drying apparatus according to claim 2 of the present invention comprises:
A duct piped under the floor is formed by a metal pipe, and a partition plate is provided inside the metal pipe to partition the upper part and the lower part through communication, and a drain pipe is attached to a lower side of the partition plate. Is what you do.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
This will be described in detail with reference to FIG. In the figure, reference numeral 1 denotes a two-story wooden house. A suction pipe 4 to which a suction fan 3 is attached is provided on the attic 2 of the second floor. The suction pipe 4 is provided vertically below a roof ridge. An intake port 5 is opened at the tip. The suction fan 3 is attached to a duct 6 formed of a stainless steel pipe.
Is guided downward along the outer wall 7 of the house 1 and is inserted into the underfloor 9 from the concrete foundation 8.

As shown in FIG. 2 and FIG. 3, the duct 6 inserted laterally into the underfloor 9 has its tip side installed slightly upward, and an exhaust port 10 is formed at the tip end. A partition plate 12 is inserted into the duct 6 along the longitudinal direction of the duct 6 to partition the inside of the duct 6 into an upper part and a lower part.
Are formed.

The partition plate 12 is formed of a metal plate such as a stainless steel plate or a copper plate, and a metal wire 16 is spirally wound around the outer periphery of the partition plate 12. For this reason, by inserting the partition plate 12 around which the metal wire 16 is wound into the duct 6 along the longitudinal direction, a gap 17 is formed between the metal wire 16 and the inner wall of the duct. The circulation part 14 and the lower part of the dew condensation water circulation part 15 communicate with each other vertically in the gap 17. A curved partition plate 23 is provided on the inflow side of the partition plate 12.
This distal end is connected to the inner wall on one side of the curved duct 6 so that hot air does not flow into the dew condensation water flowing portion 15.

The air circulation portion 14 of the duct 6 has a plurality of circular exhaust ports 10a opened at predetermined intervals along the longitudinal direction. A drain pipe 18 is connected to the bottom of the condensed water circulating section 15 at the lower part of the duct, and the tip side of the drain pipe 18 is drawn out through the concrete foundation 8 as shown in FIG.

In this case, there is no underfloor ventilation hole normally formed in the concrete foundation 8, and the underfloor 9 has a closed structure. In addition, when the underfloor drying device is installed in the existing wooden house 1, it is necessary to close the underfloor ventilation opening.

The underfloor drying apparatus having the above-described structure includes the suction fan 3
Is operated, the air above the attic 2 is sucked from the suction port 5 of the suction pipe 4. In the attic 2, the heat from the roof heated by the heat of the sun and the heat generated from electric appliances such as the lighting used indoors rise and accumulate in the upper wing side of the attic 2, and in summer, The temperature rises to 50 ° C or higher. The warmed air is guided by the suction fan 3 from the intake port 5 to the underfloor 9 through the duct 6.

The underfloor 9 has a low temperature because it is close to the ground, and the duct 6 is cooled because it is provided in an atmosphere having a low temperature. When warm air from the attic 2 is fed into the duct 6 placed under the floor 9 by the suction fan 3, it touches the inner wall of the duct having a low temperature and forms dew to form water droplets 19.

The condensed water droplets 19 flow down along the inner wall of the duct, and flow to the dew condensation water flowing portion 15 through a gap 17 formed by a metal wire 16 wound around the partition plate 12. Further, the condensed water 20 is drained to the outside of the wooden house 1 through the drain pipe 18. Further, since the partition plate 12 is provided inside the duct 6 installed in the underfloor 9, the suction fan 3 is provided.
Drops 19 and dew condensation 2 on the inner wall of the duct due to wind pressure
0 can be prevented from being blown out below the floor 9 and can be quickly drained to the outside.

By operating the suction fan 3 in this manner, the warmed air in the attic 2 circulates under the floor 9,
The water vapor contained in this air is dewed and dehumidified. The dehumidified and dried air rises from the room to the attic 2 through the gap between the walls and the floor because the underfloor 9 is sealed with the concrete foundation 8.

By operating the suction fan 3 continuously as described above, the underfloor 9 is always heated by dry warm air. As a result, the underfloor structural material is kept in a dry state, so that corrosion and termites can be prevented from occurring and durability can be greatly improved. In addition, since the tatami mats laid on the floorboards are also dry, discoloration and corrosion due to humidity can be prevented, and mites are prevented from occurring, so that a comfortable living environment can be obtained.

Further, even in the winter period, the underfloor 9 is heated and dried,
When the outside temperature is below 6 ° C, the temperature below the floor 9 is 11 ° C,
Energy saving of indoor heating can also be achieved. Before the underfloor drying device of the present invention was installed, the fold was raised and the back surface was heavy and dark with moisture when viewed from the back, but after installation, the back of the fold was dry and white.

FIG. 4 shows another embodiment of the present invention in which a partition plate 12 having drain holes 18 opened on both sides is inserted into a duct 6 formed of a stainless steel pipe. This is a structure in which the air circulation part 14 and the dew condensation water circulation part 15 communicate with each other through the gap 17 of the drain hole 18.

In the above description, the case where the duct 6 is formed of a stainless steel pipe is shown, but the duct 6 may be entirely or partially formed of a plastic pipe. In this case, a plastic duct 6 attached to the outer wall 7 of the wooden house 1
Is, as shown in FIG. 5, a half cylindrical pipe member 21a,
21b may be combined, one pipe member 21a may be fixed to the outer wall 7 with a screw 22, and then the other pipe member 21b may be fitted to form a pipe.

In the above description, the structure in which the partition plate 12 is provided inside the duct 6 installed in the underfloor 9 has been described, but a structure without the partition plate 12 may be employed.

[0022]

As described above, claim 1 according to the present invention.
According to the underfloor drying device described above, a suction fan is attached to the attic, the warm air in the attic is guided under the floor by a duct, and water vapor contained in the air is dewed here, and the dew water is drained to the outside. Thereby, it is possible to constantly circulate dry warm air under the floor, keep the underfloor structural material in a dry state, prevent corrosion and termites from occurring, and significantly improve durability. Also, the tatami mats laid on the floorboard are also dry, preventing corrosion and ticks caused by humidity.

According to the underfloor drying apparatus of the present invention, the duct piped under the floor is formed by a metal pipe.
Inside the metal pipe, a partition plate is provided to partition the upper and lower parts communicating with each other, and a drain pipe is attached to the lower side of the partition plate, so that heat conductivity can be improved and dew can be efficiently formed, The dew water condensed on the inner wall of the duct due to the wind pressure of the suction fan is prevented from being blown out under the floor, and can be quickly drained to the outside from the drain pipe.

[Brief description of the drawings]

FIG. 1 is a sectional view of a wooden house to which an underfloor drying device according to an embodiment of the present invention is attached.

FIG. 2 is a sectional view of a duct disposed under the floor in FIG. 1;

FIG. 3 is a perspective view of a duct arranged under the floor shown in FIG. 2;

FIG. 4 is a perspective view of a duct according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a duct fixed to an outer wall by combining half-cylindrical pipe members according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wooden house 2 Attic 3 Suction fan 4 Suction pipe 5 Intake port 6 Duct 7 Outer wall 8 Concrete foundation 9 Under floor 10 Exhaust port 12 Partition plate 14 Air circulation part 15 Dew condensation water circulation part 16 Metal wire 17 Gap 18 Drain pipe 19 Water drop 20 Condensation Water 21a Pipe member

Claims (2)

[Claims] An intake port is provided in an attic, an exhaust port is provided under a floor sealed from the outside, and the intake port and the exhaust port are connected by a duct, and a suction fan is attached to the duct.
An underfloor drying apparatus characterized in that a drain pipe for draining water condensed inside the pipe to the outside of the building is provided in a duct piped under the floor. 2. A duct piped under the floor is formed of a metal pipe, and a partition plate is provided inside the metal pipe so as to communicate an upper portion and a lower portion, and a drain pipe is attached to a lower side of the partition plate. An underfloor drying device, characterized in that: