JPH1114091A - Outside air cooling device of house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a house's outside air cooling device which can realize a sufficient cool feeling, and which can contribute to energy conservation by cooling fresh outside air efficiently to supply it indoors. SOLUTION: Underfloor piping 1 is arranged in an underfloor space 7. Outside air is sucked into the underfloor piping 1 from a suction hole 41 by a blower 4. A heat exchanging chamber 3 is arranged in the underfloor space 7. The part of underground piping 2 is buried. The heat exchanging chamber 3 is communicated with the underground piping 2. After the underfloor piping 1 passes through the heat exchanging chamber 3, it is communicated with indoor piping 6. The sucked outside air is cooled in the underfloor space 7 and the heat exchanging chamber 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor air cooling device for a house that sucks outdoor air, cools the air, and supplies the air to the room.

[0002]

2. Description of the Related Art With the recent boom in housing construction, there has been a remarkable development in its construction technology, and there has been a demand for the construction of so-called high-standard houses incorporating more advanced technology. As a condition for a high-standard house, attention has recently been paid to high airtightness and high heat insulation, as well as its durability. Since these two conditions produce a synergistic effect, they are often used in combination. In other words, the ceiling and walls of the house are formed to be highly airtight and highly insulated,
It aims to save energy by using natural energy such as sunlight and thereby obtain a living environment where comfortable temperature settings can be made.

It is said that the idea of a house having high airtightness and high heat insulation originates from the point of trying to minimize the consumption of fossil energy mainly in the cold season in the northern country. Certainly, it is easy to suppress the consumption of gas and oil by converting sunlight into heat. For example, many methods have been put to practical use, such as boiling hot water, converting heat, storing heat in the basement, and using this for heating.

[0004] However, considering the climate of Japan, the above-mentioned heating-oriented house is effective in a region with a long cold season, such as Hokkaido or Tohoku, but the cold season is four times a year.
It can be useless for a region that is not a fraction. In particular, highly airtight and highly insulated houses in the southern country store heat once entering the room in the summer, and solar cells and heat storage media equipment when using sunlight are expensive.

Accordingly, the present invention has been made in order to realize energy saving at a low cost with emphasis on cooling. That is, the above-mentioned heat is discharged so as not to be trapped in the room, and the natural outside air is cooled and supplied to the room, and the cooling is performed by using the low temperature under the floor and underground. . Conventionally, the invention has been invented for the same purpose as the present invention, and among those proposed to utilize low temperature under the floor and underground for cooling, for example, "Underground thermal storage cooling and heating" disclosed in JP-A-61-213530 System "and" a building cooling or heating device "disclosed in Japanese Patent Application Laid-Open No. 58-217132.

[0006] Among them, the "underground thermal storage cooling and heating system" blows outside air in the order of underfloor, underground, underfloor, wall surface, and ceiling,
The air is exhausted from the ventilation holes near the roof. However, this configuration does not only provide efficient cooling, but also imposes excessive airflow. Also, "building cooling or heating equipment"
The structure itself is very complicated, it is too expensive to be realized, and its ventilation path is complicated and requires a large amount of ventilation power, so it is not possible to save much energy. In addition, since the air in the basement is directly distributed, the smell of the basement flows directly into the room.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the present invention provides a house that can efficiently cool fresh outside air and supply it to the room to realize a sufficient cool feeling and contribute to energy saving. It is an object of the present invention to provide an outside air cooling device.

[0008]

Therefore, according to the present invention, in an outside air cooling device for a house, which draws in outside air from outside and cools the outside air by a cooling means and supplies the outside air to a room, an air inlet disposed outside the door is provided. An underfloor pipe communicated with the intake port and disposed under the floor of the house, a blower provided between the intake port and the underfloor pipe, and a dew condensation water drain disposed at a lowermost portion of the underfloor pipe. An underground pipe part of which is buried underground and one end of which is placed outdoors; a heat exchange chamber which is disposed below the floor in communication with the underground pipe and through which the underfloor pipe penetrates; A drain hole provided at the bottom of the underground pipe buried in the pipe, and an indoor pipe which communicates with the underfloor pipe and supplies outside air to each room.

In addition, a cooling means is disposed under the floor, a pipe below the floor which is communicated with an air intake port for sucking outside air and is disposed under the floor of the house, and a part thereof is buried underground. One end is composed of an underground pipe disposed outdoors and a drain hole provided at the bottom of the underground pipe buried underground, and the underground pipe communicates with the heat exchange chamber, and the underfloor pipe is connected to the heat pipe. It is designed to penetrate the exchange chamber.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is configured to satisfy the following requirements. (1) In order to inhale fresh outside air and cool it well, in the cooling, low temperatures both underground and under the floor are efficiently used. (2) In order to further enhance the cool feeling of the cooled air, the dew condensation phenomenon accompanying cooling is regarded as important, and the air is supplied indoors after dehumidification. (3) In order to blow air efficiently with a small amount of power, each blowing power is subdivided, and the length of a pipe blown by one power is minimized to suppress energy loss. (4) Ensure that natural ventilation is ensured and that there is sufficient cooling capacity without making the space under the floor completely closed. (5) As is common in the prior art, air is not directly blown from under the floor or underground, but is indirectly subjected to heat exchange to prevent air from underfloor or underground from directly entering the room. (6) By having a structure with high airtightness in the room, the ventilation function in the room is improved, and an environment in which the present outdoor air cooling device can be used more efficiently is set.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a house showing a configuration of an outside air cooling device according to the present invention, FIG. 2 is a plan view showing pipes under the floor, and FIG. 3 is an exploded perspective view showing a heat exchange chamber. As shown in FIG. 1, the outside air cooling device according to the present embodiment includes an intake port 41 disposed outdoors, a blower 4 that performs intake air from the intake port 41 and blows air into a room, and air that is sucked from the intake port 41. An underfloor pipe 1 for cooling air under the floor, a dew condensation water drain 5 for discharging water condensed in the underfloor pipe 1, and a heat exchange chamber 3 for further cooling the air cooled in the underfloor pipe 1 at a basement cold temperature. ,
An underground pipe 2 partially buried underground, one end of which is placed outdoors and which cools inhaled outside air underground and supplies it to the heat exchange chamber 3 and an underground pipe 2 buried underground
And a room pipe 6 for distributing outside air cooled in the underfloor tube 1 and the heat exchange chamber 3 to each room.

Next, the piping of the outside air cooling device will be described. As shown in FIG. 2, the air inlet 41 is disposed on the north side of the building, and the blower 4 for sucking outside air from the air inlet 41 is
It is located under the floor close to. The underfloor piping 1 is connected to a blower 4, is arranged so as to branch into two hands and meander under the floor, and is once connected to the indoor piping 6 after passing through the heat exchange chamber 3.

The underfloor pipe 1 is desirably a metal flexible pipe which has good heat conduction and is easy to lay.
For example, a bellows-like aluminum pipe is suitable.

The condensed water drain 5 is attached to the bifurcated underfloor pipe 1, respectively, and as shown in FIG. 1, the underfloor pipe 1 where the condensed water drain 5 is provided is disposed lower than other parts. I have. The drain pipe 51 of the dew condensation water drain 5 is provided so as to drain water to an outdoor drain groove 52.

As shown in FIG. 3, the heat exchange chamber 3 is formed as a rectangular closed chamber, in which a part of the underfloor pipe 1 and a part of the underground pipe 2 are piped. An exhaust port 22 is provided in the underground pipe 2 piped therein, and is provided so that outside air passing underground blows into the heat exchange chamber 3. Further, a fan 31 for stirring the air inside the heat exchange chamber 3 is provided at one end of the heat exchange chamber 3, and a vent hole 32 for discharging the air inside the heat exchange chamber 3 is provided at the other end.
Further, a plurality of radiating plates 33 are provided on the outer surface of the heat exchange chamber 3.
Is provided so as to radiate the heat of the heat exchange chamber 3 itself under the floor.

As shown in FIG. 2, one end of the underground pipe 2 is disposed outdoors as an underground intake port 23, and the underground blower 24 sucks outside air from the underground intake port 23 as shown in FIG. Is done. A plurality of drain holes 21 are provided on the bottom surface of the underground pipe 2 buried underground, and are provided so that water condensed by cooling inside the underground pipe 2 can be drained.

As the underground pipe 2, a pipe made of resin such as vinyl chloride having low corrosiveness in consideration of durability is preferable. However, a metal pipe such as an aluminum pipe having good heat conductivity is suitable for the underground pipe 2a in the heat exchange chamber 3 where the exhaust port 22 is provided.

Next, the indoor piping will be described. As shown in FIG. 1, the underfloor pipe 1 that has once passed through the heat exchange chamber 3 is connected to the indoor pipe 6, and the indoor pipe 6 is located inside the wall (not shown).
, And communicates with an air supply / exhaust grill 61 provided for each room through the ceiling of each room. The supply / exhaust grill 61 is arranged at a corner of the ceiling of each room, and an indoor exhaust port 8 for exhausting room air is provided at the other corner of the ceiling opposite to the position. A valve 62 is provided in the indoor pipe 6 in the wall surface, and is provided so as to prevent cold air from entering the room by closing the valve 62 when the apparatus is not used in a cold season.

In order to prevent the heat generated by cooling the outside air from being stored therein, it is desirable that the underfloor space 7 should not be a completely enclosed space as is often seen in the prior art. Therefore, it is preferable that a ventilation hole is formed in the upper part of the foundation, for example, so that natural ventilation means is ensured and sufficient cooling performance is provided.

Here, the operation of the present embodiment will be described. As shown in FIG. 1, the outside air sucked from the air inlet 41 by the blower 4 passes through the underfloor piping 1 and passes through the indoor piping 6.
Is cooled in the underfloor space 7 and the heat exchange chamber 3. At this time, if the humidity of the outside air is high, the temperature reaches the dew point due to cooling and dew condensation occurs, and water droplets are generated.
And drained from the drain pipe 51 to the outside. In cooling the inside of the heat exchange chamber 3, the outside air once sucked into the underground pipe 2 is cooled by the underground cold temperature,
Air is blown into this from the exhaust port 22. At this time, as in the case of the underfloor space 7, since the dew forms when the humidity of the outside air is high, the generated water droplets are provided so as to seep out from the drain hole 21 into the ground.

Accordingly, due to condensation in the underfloor piping 1 and the underground piping 2, the cooled outside air loses latent heat and becomes relatively low-energy air, thereby improving the cooling effect. In particular, the higher the humidity of the outside air, the more easily the dew condensation occurs, so that the difference in humidity between the air supplied to the room and the outside air increases, so that a cool feeling can be obtained even if the temperature difference is not large.

With respect to the circulation of air in the room, the cool air discharged from the air supply / exhaust grill 61 arranged at one corner of the ceiling tends to fall. On the other hand, the indoor exhaust port 8 provided at a position opposing the air supply / exhaust grill 61.
The warm air collected at the top is discharged outside. As a result, circulation occurs, and the exhaust from the air supply / exhaust grill 61 is not blocked, so that an unreasonable load is not applied to the blower 4.

Here, Table 1 shows the measured temperature values in an example of a building using the outside air cooling device of the present embodiment. In this architectural example, in order to make a two-story high airtight and highly heat-insulated house, the heat insulation structure such as each wall surface and ceiling surface is reinforced, and the house employs a pair of heat-shielding glass windows. Since this house has a total floor area of about 188 m ² , the total volume of the room to which the cooled air is supplied is about 470 m ³ . Therefore, using 60m aluminum pipe having a diameter of 150mm under the floor pipe, further addition to the blowing of the hour 300 meters ³ by the blower, by the amount of exhaust from the exhaust air outlet in the same way, efficient indoor circulation Can be obtained.

[0024]

[Table 1]

As can be seen from Table 1, the temperature difference between the outside air and the indoor outlet is −5.2 to −1.3 ° C., which is lower in the room, especially on the first measurement day and the third measurement day. So high temperature,
The cooling effect is remarkable at low humidity. Although the humidity varies slightly from +11.9 to -16.4%, it can be seen that the higher the humidity, the higher the dehumidifying effect, as seen particularly on the second measurement day. The above-mentioned temperature difference is a temperature difference at which the human body feels a sufficient difference, and in the case of high humidity, a cool feeling can be obtained.

Thus, a sufficient cool feeling can be obtained in the room, so that the use of the air conditioner can be minimized. It is needless to say that the difference in energy consumption between the case where the natural cooling function is used only by blowing air as in the present invention and the case where forced cooling is performed by an air conditioner is very large in terms of energy consumption. Moreover, in the case of an air conditioner, the humidity is greatly reduced, which is not preferable for the human body. On the other hand, when this system is used, an appropriate humidity is given, so that a comfortable environment can be maintained even when used for a long time.

[0027]

According to the present invention, the configuration is as described above.
Because fresh outside air can be efficiently cooled and supplied indoors,
There is an excellent effect that energy saving can be realized and a comfortable living environment in summer can be obtained. In addition, since an appropriate humidity can be maintained unlike an air conditioner, there is an excellent effect that an environment favorable for a human body can be maintained even when used for a long time.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a house showing a configuration of an outside air cooling device according to the present invention.

FIG. 2 is a plan view showing each pipe below the floor.

FIG. 3 is an exploded perspective view showing a heat exchange chamber.

[Explanation of symbols]

 1 ‥‥‥ Underfloor piping 2 ‥‥‥ Underground piping 21 ‥‥ Drain hole 22 ‥‥ Exhaust port 23 ‥‥ Underground air intake 24 ‥‥ Underground blower 3 ‥‥‥ Heat exchange room 31 ‥‥ Fan 32 ‥‥ Vent hole 33 ‥‥ heat sink 34 ‥‥‥ drain hole 4 ド レ イ ン blower 41 ‥‥ intake port 5 ‥‥‥ condensation water drain 51 ‥‥ drain pipe 52 ‥‥ drain groove 6 ‥‥‥ indoor piping 61 ‥‥ supply and exhaust grill 7下 Underfloor space 8 ‥‥‥ Exhaust vent

Claims (6)

[Claims] 1. An outdoor air cooling device for a house, which draws in outside air from outside and cools the outside air by a cooling means and supplies the room to a room, comprising: an intake port arranged outdoors; Underfloor piping arranged under the floor, a blower provided between the intake port and the underfloor piping, and a condensate drain disposed at the bottom of the underfloor piping, and a part of which is buried underground An underground pipe, one end of which is placed outdoors, is placed under the floor in communication with the underground pipe, and a heat exchange chamber through which the underfloor pipe penetrates, and a bottom surface of the underground pipe buried underground. A drain hole provided;
An outdoor air cooling device for a house, comprising indoor piping connected to underfloor piping and supplying external air to each room. 2. A part of the underfloor piping is disposed lower than the other part, and a condensed water drain is provided in the lower part.
2. The outdoor air cooling device for a house according to claim 1, wherein a drain pipe is connected to the dew water drain, and the drain pipe is piped so that the dew water can be drained outside. 3. An air outlet of an indoor pipe is disposed at one corner of a ceiling of a room to which outside air is supplied, and an exhaust port is provided at another corner of the ceiling opposite to a position where the air outlet is disposed. 2. The outdoor air cooling system for a house according to claim 1, wherein indoor air is forcibly discharged from said exhaust port. 4. An outdoor air cooling device for a house, which draws in outside air from outside and cools the outside air by a cooling means and supplies it to the room, wherein the cooling means sucks the outside air into a heat exchange chamber arranged under the floor. An underfloor pipe communicated with an air inlet and arranged under the floor of the house, a part of which is buried underground, one end of which is placed outdoors, and an underground pipe which is disposed outside, and provided on the bottom of the underground pipe buried underground And an underground pipe communicating with the heat exchange chamber, and the underfloor pipe penetrating the heat exchange chamber. 5. The outside air cooling device for a house according to claim 4, wherein a heat radiating plate is provided on an outer wall of the heat exchange chamber. 6. The outside air cooling device for a house according to claim 4, wherein a fan for stirring the air inside the heat exchange chamber is provided.