JP2012057807A - Ventilation system of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently enhance ventilation efficiency of an indoor space, in a ventilation system for ventilating the indoor space of a building.SOLUTION: The ventilation system includes an air supply tower 10 for supplying outside air to a lower area of the indoor space 102 of the building 100, and an exhaust tower 20 for exhausting air from an upper area of the indoor space 102. On this occasion, the air supply tower 10 is arranged with a sprinkler 30 for sprinkling in an outside air passage 14. Installation of the exhaust tower 20 promotes chimney effect on the exhaust side of the indoor space 102 to enhance the ventilation efficiency of the indoor space 102. On the other hand, with regard to the air supply tower 10, descending current is formed in the outside air passage 14 by natural drop action of droplets sprinkled by the sprinkler 30, which also promotes the chimney effect on the air supply side of the indoor space 102 to further enhance the ventilation efficiency of the indoor space 102.

Description

  The present invention relates to a ventilation system that ventilates an indoor space of a building.

  2. Description of the Related Art Conventionally, building ventilation systems that are configured to supply outside air to a lower area of an indoor space and exhaust air from the upper area are widely known.

  When such a ventilation system is employed, the flow of air in the indoor space becomes smooth due to the so-called chimney effect, so that the ventilation efficiency of the indoor space can be increased.

  “Patent Document 1” describes such a ventilation system provided with an exhaust tower for discharging air in an indoor space.

  Further, in “Patent Document 2”, as a ventilation system for underground structures, air in an indoor space is discharged through an exhaust tower installed at the center of the body of the underground structure, and is formed around the body. What is configured to supply outside air to an indoor space through a supply air vertical hole is described.

JP 2002-194826 A JP-A-6-117121

  As in the ventilation system described in the above-mentioned “Patent Document 1”, when the exhaust tower is provided, the chimney effect can be enhanced on the exhaust side of the indoor space, thereby further improving the ventilation efficiency of the indoor space. Can be increased.

  At that time, if the chimney effect can be enhanced even on the air supply side of the indoor space, the ventilation efficiency of the indoor space can be further increased.

  However, since the supply of the outside air to the indoor space is performed in the lower area, the chimney is simply installed by simply installing the supply air vertical hole described in the above-mentioned “Patent Document 2” or the supply air tower corresponding thereto. The effect cannot be enhanced, but rather the chimney effect will be diminished, so the ventilation efficiency of the indoor space cannot be sufficiently increased.

  This invention is made in view of such a situation, Comprising: In the ventilation system which ventilates the indoor space of a building, the ventilation system of a building which can fully raise the ventilation efficiency of indoor space is provided. It is intended.

  The present invention comprises a supply tower for supplying outside air to the lower area of the indoor space and an exhaust tower for discharging air from the upper area of the indoor space. By adopting a configuration in which a predetermined watering device is arranged, the above object is achieved.

That is, the building ventilation system according to the present invention is:
In ventilation systems that ventilate indoor spaces in buildings,
An air supply tower for supplying outside air to the lower area of the indoor space, and an exhaust tower for discharging air from the upper area of the indoor space,
The outside air introduction port for introducing outside air into the air supply tower, the outside air passage for guiding the outside air introduced from the outside air introduction port downward, and the outside air guided downward along the outside air passage An outdoor air outlet for blowing out to the lower area of the indoor space is formed,
An internal air flow inlet for allowing the air in the indoor space to flow into the exhaust tower from the upper region of the indoor space, an internal air passage for guiding the air flowing in from the internal air flow inlet to the exhaust tower, An inside air discharge port for discharging the air guided upward along the inside air passage to the outside space is formed,
The water supply tower is provided with a watering device for sprinkling water in the outside air passage of the air supply tower.

  The number of the “air supply tower” and the “exhaust tower” installed, the specific installation location, and the like are not particularly limited.

  The specific formation position of the “outside air inlet” of the air supply tower is not particularly limited as long as it is located above the outside air outlet of the air supply tower.

  The specific formation position of the “inside air discharge port” of the exhaust tower is not particularly limited as long as it is located above the internal air flow inlet of the exhaust tower.

  As long as the “watering device” is configured to spray water in the outside air passage of the air supply tower, the specific arrangement and direction of watering are not particularly limited.

  As shown in the above configuration, a building ventilation system according to the present invention includes an air supply tower for supplying outside air to a lower region of an indoor space of a building, and an exhaust for discharging air from the upper region of the indoor space. In this case, the air supply tower is provided with a watering device for spraying water in the outside air passage, so that the following effects can be obtained. .

  That is, in the exhaust tower, air in the upper area of the indoor space is introduced from the internal air flow inlet, guided upward along the internal air passage, and discharged from the internal air discharge port to the external space. Therefore, the chimney effect can be enhanced on the exhaust side of the indoor space, and thereby the ventilation efficiency of the indoor space can be increased.

  On the other hand, the air supply tower is configured to introduce outside air from the outside air inlet, guide it downward along the outside air passage, and blow it out from the outside air outlet to the lower area of the indoor space. If only the air tower is installed, the chimney effect cannot be increased on the air supply side of the indoor space, but rather the chimney effect is reduced. However, since this water supply tower is equipped with a watering device for sprinkling water in the outside air passage, water droplets sprinkled from this watering device naturally fall, so that a downdraft is generated in the outside air passage. Can be formed. As a result, the chimney effect can be enhanced even on the air supply side of the indoor space, so that the ventilation efficiency of the indoor space can be further increased.

  Thus, according to this invention, in the ventilation system which ventilates the indoor space of a building, the ventilation efficiency of indoor space can fully be improved.

  Moreover, in the present invention, when the water droplets sprinkled from the watering device naturally fall, the air in the outside air passage can be cooled by the evaporative cooling action. And since the air cooled in this way will flow into the lower area | region of indoor space, this can improve the cooling effect of indoor space.

  In the above configuration, a waste heat supply port for supplying waste heat generated in a building (for example, exhaust heat from an outdoor unit of an air conditioner or exhaust heat of a plant) to the inside air passage is formed in the exhaust tower. If it is set as a structure, formation of the updraft in the inside air passage can be promoted, and the ventilation efficiency of the indoor space can be further increased accordingly.

  In the above configuration, if the air supply tower and the exhaust tower are arranged in series in the vertical direction with the air supply tower facing down, the installation efficiency of the air supply tower and the exhaust tower can be increased.

  In the above configuration, if the supply tower and the exhaust tower are installed in the external space of the building, the building ventilation system according to the present invention can be easily applied to an existing building. Become.

  In the above configuration, if the supply tower and the exhaust tower are installed at a plurality of locations, the ventilation efficiency of the indoor space can be further enhanced.

Side sectional view which shows the ventilation system of the building which concerns on one Embodiment of this invention The perspective view which shows the building provided with the said ventilation system The figure for demonstrating the effect | action of the said embodiment. The same figure as FIG. 1 which shows the 1st modification of the said embodiment. The same figure as FIG. 1 which shows the 2nd modification of the said embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view showing a building ventilation system according to an embodiment of the present invention. Moreover, FIG. 2 is a perspective view which shows the building provided with this ventilation system.

  As shown in FIG. 1, the building ventilation system according to the present embodiment is a ventilation system that ventilates the indoor space 102 with respect to a building 100 having a large indoor space 102 such as a factory or a warehouse. The air supply tower 10 for supplying outside air to the lower region of the indoor space 102 and the exhaust tower 20 for discharging air from the upper region of the indoor space 102 are provided.

  The building 100 has a roof 130 that is gently inclined on both sides.

  The supply tower 10 and the exhaust tower 20 are both formed in a cylindrical shape, and extend in the vertical direction from the ground where the building 100 is installed to a position higher than the roof 130 of the building 100.

  As shown in FIG. 2, five sets of the air supply tower 10 and the exhaust tower 20 are installed in the external space of the building. At that time, the five air supply towers 10 are installed at substantially equal intervals along the north side wall 110 of the building 100, and the five exhaust towers 20 are arranged along the south side wall 120 of the building 100, The air supply towers 10 are installed at positions facing the air supply towers 10 at substantially equal intervals.

  Since each of the air supply tower 10 and the exhaust tower 20 of each set has the same configuration, only one set will be described.

  As shown in FIG. 1, the air supply tower 10 has an outside air introduction port 12 for introducing outside air, an outside air passage 14 for guiding outside air introduced from the outside air introduction port 12 downward, and the outside air passage. 14 is formed with an outside air outlet 16 for blowing the outside air guided downward along the air outlet 14 to the lower region of the indoor space 102.

  At that time, the outside air inlet 12 opens northward from the outside air passage 14 at the upper end portion of the air supply tower 10. On the other hand, the outside air outlet 16 opens southward from the outside air passage 14 at the lower end portion of the air supply tower 10, and communicates with the indoor space 102 at the lower end portion of the north side wall 110.

  The air supply tower 10 is provided with a watering device 30 for watering the outside air passage 14.

  The watering device 30 includes a watering nozzle 32 for watering fine water droplets having a particle diameter of about 100 to 1000 μm, and a water supply control unit 34 for performing water supply control on the watering nozzle 32.

  The water spray nozzle 32 is disposed at a substantially central position of the outside air passage 14 at the upper end portion of the outside air passage 14 (that is, a position slightly below the outside air introduction port 12). At this time, the watering nozzle 32 is arranged so as to open downward, and sprays water droplets in a substantially conical shape downward.

  The water supply control unit 34 is supported by the peripheral wall of the air supply tower 10 at the upper end of the air supply tower 10 (that is, the uppermost end in the outside air passage 14 and above the roof 130 of the building 100). ing. At this time, the water supply control unit 34 is arranged so that one side wall surface thereof is exposed from the peripheral wall of the air supply tower 10 toward the south side. And the side wall surface exposed to this south side is comprised as the solar cell panel 34a which produces | generates the drive electric power for water supply control with sunlight.

  On the other hand, the exhaust tower 20 has an internal air flow inlet 22 for allowing the air in the indoor space 102 to flow into the exhaust tower 20 from its upper region, and an internal air passage for guiding the air flowing from the internal air flow inlet 22 upward. 24 and an inside air discharge port 26 for discharging the air guided upward along the inside air passage 24 to the external space.

  At that time, the internal air flow inlet 22 opens northward from the internal air passage 24 at a position slightly above the central portion in the vertical direction of the exhaust tower 20, and communicates with the indoor space 102 at the upper end portion of the south side wall 120. ing. On the other hand, the inside air discharge port 26 opens upward at the upper end edge of the exhaust tower 20.

  In the exhaust tower 20, a portion located below the inside air passage 24 is formed as an inside air passage extension 24 </ b> E that has the same cross-sectional shape as the inside air passage 24 and extends to the lower end edge of the exhaust tower 20.

  At the lower end portion of the exhaust tower 20, a waste heat supply port 28 for supplying waste heat generated in the building 100 to the inside air passage 24 of the exhaust tower 20 opens southward from the inside air passage extension 24E. Is formed. An outdoor unit 40 of an air conditioner used in the building 100 is attached to the waste heat supply port 28 so that the exhaust heat from the exhaust fan is guided to the inside air passage 24 via the inside air passage extension 24E. It has become.

  Next, the effect of this embodiment is demonstrated.

  The building ventilation system according to the present embodiment includes an air supply tower 10 for supplying outside air to the lower region of the indoor space 102 of the building 100, and an exhaust tower 20 for discharging air from the upper region of the indoor space 102. In this case, the air supply tower 10 is provided with a watering device 30 for spraying water in the outside air passage 14, so that the following effects can be obtained. Can do.

  That is, in the exhaust tower 20, the air in the upper region of the indoor space 102 flows from the internal air flow inlet 22, is guided upward along the internal air passage 24, and is discharged from the internal air discharge port 26 to the external space. As a result, the chimney effect can be enhanced on the exhaust side of the indoor space 102, and thereby the ventilation efficiency of the indoor space 102 can be increased.

  On the other hand, the air supply tower 10 introduces outside air from the outside air introduction port 12, guides it downward along the outside air passage 14, and blows it out from the outside air outlet 16 to the lower region of the indoor space 102. However, just installing this air supply tower 10 cannot increase the chimney effect on the air supply side, but rather reduces the chimney effect. However, the air supply tower 10 is provided with a watering device 30 for sprinkling water in the outside air passage 14, so that water droplets sprinkled from the watering device 30 naturally fall, and the outside air passage 14. A downward airflow can be formed inside. As a result, the chimney effect can be enhanced even on the air supply side of the indoor space 102, so that the ventilation efficiency of the indoor space 102 can be further increased.

  This point will be described in detail with reference to FIG.

  FIG. 3A is a schematic diagram showing a building ventilation system according to the present embodiment, and FIG. 3B is a schematic diagram showing the air supply tower 10 and the exhaust tower 20 separated from the building 100. is there.

  As shown in FIG. 5B, the temperature of the indoor space 102 as a single building 100 is higher in the upper region than in the lower region, so the pressure in the indoor space 102 is lower in the lower region and higher in the upper region. Get higher. The difference P2-Po between the pressure P2 in the indoor space 102 and the pressure Po in the external space is a negative value in the lower region and a positive value in the upper region. At this time, the value of P2-Po near the outside air outlet 16 of the air supply tower 10 in the indoor space 102 is set to P2a (negative pressure), and the value of P2-Po near the internal airflow inlet 22 of the exhaust tower 20 in the indoor space 102 is set. Is P2b (positive pressure).

  Further, as shown in FIG. 5B, in the inside air passage 24 as the exhaust tower 20 alone, air in the indoor space 102 flows from the inside air flow inlet 22 at the lower end portion thereof, and the inside air discharge port at the upper end portion thereof. 26, the difference P3-Po between the pressure P3 of the inside air passage 24 and the pressure Po of the external space is a negative value in the lower region, and in the upper region, as in the case of the indoor space 102. Is a positive value. At this time, the value of P3-Po near the internal air flow inlet 22 in the internal air passage 24 is P3a (negative pressure), and the value of P3-Po near the internal air discharge port 26 in the internal air passage 24 is P3b (positive pressure).

  On the other hand, as shown in FIG. 4B, in the outside air passage 14 as the air supply tower 10 alone, if there is no water sprinkling from the water sprinkler 30, the pressure P1 ′ in the outside air passage 14 and the external space The difference P1′−Po from the pressure Po is a pressure distribution similar to that in the indoor space 102, as indicated by a two-dot chain line in the figure.

  However, since the water sprinkler 30 is disposed in the outside air passage 14, a water drop sprinkled from the water sprinkler 30 naturally falls, and a downdraft is generated in the outside air passage 14. For this reason, the difference P1-Po between the pressure P1 in the outside air passage 14 and the pressure Po in the external space has a negative value in the upper region and a positive value in the lower region. At this time, the value of P1-Po near the outside air inlet 12 in the outside air passage 14 is P1a (negative pressure), and the value of P1-Po near the outside air outlet 16 in the outside air passage 14 is P1b (positive pressure). To do.

  Actually, as shown in FIG. 5A, the building ventilation system according to the present embodiment has a configuration in which the air supply tower 10 and the exhaust tower 20 are connected to the building 100.

  Therefore, at the outside air outlet 16 of the air supply tower 10, not only P2a (negative pressure) of the indoor space 102 acts as a suction pressure, but also P1b (positive pressure) of the outside air passage 14 of the air supply tower 10 is discharged pressure. Will act as. For this reason, the pressure P1b + P2a which added both acts as air inflow pressure to the indoor space 102 in the external air blower outlet 16. FIG. Then, the chimney effect on the air supply side of the indoor space 102 is increased by the discharge pressure P1b, and thereby the ventilation efficiency of the indoor space 102 is enhanced.

  In addition, at the internal airflow inlet 22 of the exhaust tower 20, not only P2b (positive pressure) in the indoor space 102 acts as a discharge pressure, but also P3a (negative pressure) in the internal air passage 24 of the exhaust tower 20 acts as a suction pressure. Will be. For this reason, pressure P2b + P3a which added both acts as air outflow pressure from the indoor space 102 in the internal airflow inlet 22. FIG. Then, the chimney effect on the exhaust side of the indoor space 102 is increased by the suction pressure P3a, and thereby the ventilation efficiency of the indoor space 102 is increased.

  Thus, according to the present embodiment, in the ventilation system that ventilates the indoor space 102 of the building 100, the ventilation efficiency of the indoor space 102 can be sufficiently increased.

  In particular, in the present embodiment, the water spray from the water spray device 30 is performed downward, and therefore the formation of the downdraft in the outside air passage 14 can be promoted by the water spray pressure at that time. As a result, the discharge pressure P1b from the inner air flow inlet 22 increases, so that the chimney effect on the exhaust side of the indoor space 102 can be increased accordingly, thereby improving the ventilation efficiency of the indoor space 102. It can be further enhanced.

  Moreover, in the present embodiment, when the water droplets sprinkled from the water sprinkler 30 naturally fall, the air in the outside air passage 14 can be cooled by the evaporative cooling action. And since the air cooled in this way flows into the lower area | region of the indoor space 102, the cooling effect of the indoor space 102 can be heightened by this.

  In the present embodiment, waste heat generated in the building 100 (specifically, exhaust heat from the outdoor unit 40 of the air conditioner) is supplied to the exhaust air tower 24 via the interior air passage extension 24E. Since the waste heat supply port 28 is formed, the heat rising from the waste heat supply port 28 in the inside air passage extension 24E can promote the formation of the updraft in the inside air passage 24, Ventilation efficiency can be further increased accordingly.

  Furthermore, in this embodiment, since the air supply tower 10 and the exhaust tower 20 are installed in the external space of the building 100, even when the building 100 is an existing building, the building according to this embodiment It is easy to apply a ventilation system.

  At this time, in the present embodiment, the supply tower 10 and the exhaust tower 20 are installed at five locations, respectively, so that the ventilation efficiency of the indoor space 102 can be further enhanced.

  In addition, at that time, the five air supply towers 10 are installed on the south side of the building 100, and therefore, each of the air supply towers 10 can be irradiated with sunlight over a wide range. And since the air in the inside air passage 24 is heated by this sunlight irradiation, formation of the updraft in the inside air passage 24 can be promoted.

  Moreover, the watering device 30 arrange | positioned at each of these air supply towers 10 is arrange | positioned in the position where the water supply control unit 34 is higher than the roof 130 of the building 100, and goes to the south side from the surrounding surface wall of the air supply tower 10. Since the exposed side wall surface is configured as a solar cell panel 34a, it is possible to generate driving power for water supply control with sunlight.

  In the said embodiment, although the supply tower 10 and the exhaust tower 20 were demonstrated as what is each installed in five places, of course, it is also possible to set it as the structure installed in four places or less or six places or more. .

  In the above embodiment, the case where the ventilation system is applied to the single large indoor space 102 has been described. However, even in the case where the ventilation system is partitioned into a plurality of small indoor spaces, each indoor space is divided into the ventilation system. If it is set as an application target, it is possible to obtain the same operational effects as in the above embodiment.

  Next, a modification of the above embodiment will be described.

  First, a first modification of the above embodiment will be described.

  FIG. 4 is a view similar to FIG. 1 showing a building ventilation system according to this modification.

  As shown in the figure, the building ventilation system according to this modification is configured to ventilate the indoor space 102 of the building 100 using a plurality of sets of the air supply tower 210 and the exhaust tower 220. In this modification, the air supply tower 210 and the exhaust tower 220 of each set are arranged in series in the vertical direction with the air supply tower 210 facing down.

  That is, the exhaust tower 220 has a configuration in which the internal air flow inlet 222, the internal air passage 224, and the internal air discharge port 226 are arranged in the same manner as the exhaust tower 20 of the above embodiment, but the exhaust tower of the above embodiment. 20, there is no portion constituting the inside air passage extension 24E, and the air supply tower 210 is incorporated in that portion.

  At that time, the air supply tower 210 has a configuration in which an outside air introduction port 212, an outside air passage 214, and an outside air outlet 216 are formed as in the air supply tower 10 of the above embodiment. It is shorter than the outside air passage 14 in the air supply tower 10 of the said embodiment. Further, a watering device 230 including a watering nozzle 232 and a water supply control unit 234 that open downward is disposed in the outside air passage 214, but the arrangement is slightly different from the case of the watering device 30 of the above embodiment. Yes.

  Even when the configuration of this modification is employed, the ventilation efficiency of the indoor space 102 can be sufficiently increased.

  At this time, by adopting the configuration of this modification, the supply tower 210 and the exhaust tower 220 are installed as one tower at the installation location of each supply tower 10 and the installation location of each exhaust tower 20 in the above embodiment. This can increase the installation efficiency. For example, in the same installation environment as in the above embodiment, ten sets of the air supply tower 210 and the exhaust tower 220 can be installed.

  And since the installation efficiency of the air supply tower 210 and the exhaust tower 220 can be improved in this way, the ventilation efficiency of the indoor space 102 can further be improved.

  Next, a second modification of the above embodiment will be described.

  FIG. 5 is a view similar to FIG. 1 showing a building ventilation system according to this modification.

  As shown in the figure, the building ventilation system according to this modification is also configured to ventilate the indoor space 102 of the building 100 using the air supply tower 310 and the exhaust tower 320. In the example, a pair of supply towers 310 </ b> A and 310 </ b> B are installed for one exhaust tower 320.

  The pair of air supply towers 310 </ b> A and 310 </ b> B are installed at locations where the air supply tower 10 and the exhaust tower 20 of each pair in the above embodiment are installed.

  Each of these air supply towers 310A and 310B is provided with the outside air inlets 312A and 312B, the outside air passages 314A and 314B, and the outside air outlets 316A and 316B, and the outside air passages 314A, 314A, In 314B, a watering device 30 including a watering nozzle 32 and a water supply control unit 34 that open downward is disposed.

  At that time, the air supply tower 310A installed on the north side of the building 100 has the same configuration as the air supply tower 10 of the above embodiment. On the other hand, the air supply tower 310B installed on the south side of the building 100 has an external air outlet 316B installed in a symmetrical relationship with respect to the air supply tower 310A. 30 is installed in a positional relationship of parallel movement. Thus, in any of the pair of air supply towers 310A and 310B, the solar battery panel 34a of the water supply control unit 34 in the watering device 30 is arranged in the south direction.

  On the other hand, the exhaust tower 320 is installed not in the exterior space of the building 100 but in the center position in the north-south direction in the building 100 so as to penetrate the roof 130 from the indoor space 102 and extend vertically upward.

  In this exhaust tower 320, a pair of internal air flow inlets 322 for allowing the air in the indoor space 102 to flow into the exhaust tower 320 from the upper region thereof, and the air flowing in from the respective internal air flow inlets 322 are guided upward. The inside air passage 324 and the inside air discharge port 326 for discharging the air guided upward along the inside air passage 324 to the external space are formed.

  At this time, the exhaust tower 320 is formed in a rectangular cylinder shape instead of a cylindrical shape. The pair of inside air discharge ports 322 are formed at two locations on the north and south sides of the peripheral wall of the exhaust tower 320.

  A portion of the exhaust tower 320 positioned below the inside air passage 324 is formed as an inside air passage extension 324E having the same cross-sectional shape as the inside air passage 324 and extending to the lower end edge of the exhaust tower 320. A pair of waste heat supply ports 328 are formed at two locations north and south of the face wall. Each waste heat supply port 328 is attached with an outdoor unit 40 of an air conditioner used in the building 100, and the exhaust heat from the exhaust fan is guided to the inside air passage 324 via the inside air passage extension 324E. It is like that.

  The upper end edge of the exhaust tower 320 is closed, and the inside air discharge ports 326 are formed at two locations on the north and south sides of the peripheral wall at the upper end portion of the exhaust tower 320. A louver 350 is attached to each of the inside air outlets 326. Also, a pair of cross-section “<”-shaped covers 352 are arranged on both the north and south sides of the upper end of the exhaust tower 320 so as to cover the inside air discharge ports 326 at a predetermined interval. The air flowing in the space above the exhaust tower 320 causes the air in the inside air passage 324 to be sucked out to the external space from the gap between each cover 352 and the upper end edge of the exhaust tower 320.

  Even when the configuration of this modification is employed, the ventilation efficiency of the indoor space 102 can be sufficiently increased.

  In that case, in this modification, since one pair of air supply towers 310A and 310B is installed for one exhaust tower 320, the ventilation efficiency of the indoor space 102 can be further enhanced.

  In addition, the numerical value shown as a specification in the said embodiment and each modification is only an example, and of course, you may set these to a different value suitably.

10, 210, 310A, 310B Air supply tower 12, 212, 312A, 312B Outside air inlet 14, 214, 314A, 314B Outside air passage 16, 216, 316A, 316B Outside air outlet 20, 220, 320 Exhaust tower 22, 222, 322 Inside air flow inlet 24, 224, 324 Inside air passage 24E, 324E Inside air passage extension 26, 226, 326 Inside air outlet 28, 328 Waste heat supply port 30, 230 Sprinkling device 32, 232 Sprinkling nozzle 34, 234 Water supply control unit 34a Solar cell panel 40 Air conditioner outdoor unit 100 Building 102 Indoor space 110 North side wall 120 South side wall 130 Roof 350 Galery 352 Cover

Claims (5)

In ventilation systems that ventilate indoor spaces in buildings,
An air supply tower for supplying outside air to the lower area of the indoor space, and an exhaust tower for discharging air from the upper area of the indoor space,
The outside air introduction port for introducing outside air into the air supply tower, the outside air passage for guiding the outside air introduced from the outside air introduction port downward, and the outside air guided downward along the outside air passage An outdoor air outlet for blowing out to the lower area of the indoor space is formed,
An internal air flow inlet for allowing the air in the indoor space to flow into the exhaust tower from the upper region of the indoor space, an internal air passage for guiding the air flowing in from the internal air flow inlet to the exhaust tower, An inside air discharge port for discharging the air guided upward along the inside air passage to the outside space is formed,
A building ventilation system, wherein a watering device for spraying water is arranged in the outside air passage of the air supply tower.   2. The building ventilation system according to claim 1, wherein a waste heat supply port for supplying waste heat generated in the building to the inside air passage of the building is formed in the exhaust tower.   The building ventilation system according to claim 1, wherein the air supply tower and the exhaust tower are arranged in series in the vertical direction with the air supply tower facing down.   The building ventilation system according to claim 1, wherein the air supply tower and the exhaust tower are installed in an external space of the building.   The building ventilation system according to any one of claims 1 to 4, wherein the air supply tower and the exhaust tower are respectively installed at a plurality of locations.

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