JP6400429B2 - Intake structure of building, building having the same, and intake method of building - Google Patents

Description

  Embodiments of the present invention relate to an air intake structure for a building, a building including the same, and an air intake method for the building, and more particularly, to a structure applied to a reactor building as a building.

  Nuclear plants must be designed so as not to compromise the safety of the reactor facility against possible external human events. One possible human event is the crash of an aircraft. In some countries, such as Europe, maintain safety against physical impact loads associated with the direct impact of an aircraft on a reactor building. It is requested. In order to meet this demand, Patent Documents 1 and 2 are known as structures for making the reactor building solid.

  On the other hand, when an aircraft crashes into a nuclear facility, it is expected that a fire will occur due to the on-board fuel, and harmful substances such as soot and carbon monoxide from combustion will diffuse into the atmosphere outside the building. The same applies to the case where explosions, fires, poisonous gases and other harmful substances are released in the vicinity of the reactor facility.

  In reactor buildings, HVAC (Heating, Ventilation and Air Conditioning) is usually installed to carry out internal ventilation, etc., and the supply and exhaust ports penetrate the building walls due to functional requirements. It becomes the opening part to do. For this reason, when a fire breaks out or a harmful substance is released outside the building, a flame or a harmful substance flows into the interior through this opening, and equipment or operators who maintain the safety of the reactor May interfere with the work. In fact, according to IAEA's Nuclear Safety Guide 3.1 (IAEA-NS-G-3.1) (Non-Patent Document 1), an intrusion of combustion products into a building is an event to be considered in an aircraft collision. It is clearly stated.

JP 2011-43439 A JP-A-57-172289

IAEA, External Human Induced Events in Site Evaluation for Nuclear Power Plants, IAEA-NS-G-3.1, 2002

  So far, patents aimed at ensuring the safety of reactor buildings against collisions with aircraft, etc., as shown in the aforementioned Patent Documents 1 and 2, etc., deal with impacts against direct collisions with reactor buildings It is designed to cope with the impact on safety caused by the combustion products from the fire outside the building and harmful substances from external artifacts flowing into the building through the opening of the HVAC. Absent.

  In general, in order to prevent inflow of harmful substances into the building, it is conceivable to close the opening with a protective door or the like in an emergency. However, the aircraft's on-board fuel is several tens of tons, depending on the size, and the fire may continue for several hours. The temperature cannot be adjusted. For this reason, environmental conditions, such as the temperature of a building interior, become severe gradually, and it will become a factor of the action restriction | limiting of a driver | operator in an emergency, and work efficiency fall.

  The object of the embodiment of the present invention is made in consideration of the above-described circumstances, and maintains the indoor environment of the building by operating the air conditioner continuously regardless of the outdoor situation of the building. An object of the present invention is to provide an air intake structure for a building, a building including the air intake structure, and an air intake method for the building.

An air intake structure for a building according to an embodiment of the present invention includes an air conditioner that is installed indoors to perform air conditioning in the building, an air inlet that is formed through the building, and the air inlet. And a flow path connected to the air conditioner and provided with a fire extinguishing / capturing means and an adsorbing means, and the fire extinguishing / capturing means captures and removes particulate matter in the outside air taken in from the intake port. The flame is extinguished, and the adsorbing means adsorbs and removes harmful substances in the outside air, and is connected to the air conditioner and the intake port with another flow path having a closing means. when closing the other flow path, and characterized in that from the outside air is the air inlet, it is so that configured fed to the air-conditioning equipment through the flow path having the extinguishing-capturing means and said suction means To do.
Moreover, the building of embodiment which concerns on this invention is equipped with the intake structure of the building of embodiment which concerns on the said invention, It is characterized by the above-mentioned.

Furthermore, in the air intake method for a building according to the embodiment of the present invention, outside air is introduced into an air conditioner that is installed indoors and performs air conditioning in the building from an air inlet formed so as to penetrate the building. When introducing, the fire extinguishing / capturing means provided in the flow path connected to the air inlet and the air conditioner captures and removes particulate matter in the outside air and extinguishes the flame, and enters the flow path. When the adsorbing means provided adsorbs and removes harmful substances in the outside air, and the closing means provided in another flow path connected to the intake port and the air conditioner closes the other flow path. In addition, the outside air from which the particulate matter and the harmful substance are removed and the flame is extinguished is supplied to the air conditioner through the flow path from the intake port .

  According to the embodiment of the present invention, the indoor environment of the building can be favorably maintained by continuously operating the air-conditioning equipment regardless of the outdoor situation of the building.

The block diagram which shows the intake structure of the reactor building as an intake structure of the building which concerns on 1st Embodiment. The block diagram which shows the operation | movement at the time of emergency in the intake structure of the reactor building of FIG. The block diagram which shows the operation | movement at the time of the emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 2nd Embodiment. The block diagram which shows the operation | movement at the time of the emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 3rd Embodiment. The block diagram which shows the operation | movement at the time of the emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 4th Embodiment. The block diagram which shows the operation | movement at the time of the emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 5th Embodiment.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[A] First embodiment (FIGS. 1 and 2)
FIG. 1 is a configuration diagram illustrating an intake structure of a reactor building as an intake structure for a building according to the first embodiment. A reactor building 10 as a building shown in FIG. 1 is made of reinforced concrete, and an inlet 12 is formed through the wall 11 of the reactor building. The air inlet 12 allows the outdoor 13 and the indoor 14 of the reactor building 10 to communicate with each other.

  A protective cover 15 is provided around the air inlet 12 on the wall 11 of the reactor building 10. Debris generated when a projectile such as an aircraft collides with the reactor building 10 or the reactor reactor building 10 is shielded by the protective cover 15 and is prevented from entering the indoor 14 through the air inlet 12. .

  An air conditioner 16 is installed in the interior 14 of the reactor building 10 corresponding to the air inlet 12. The air conditioner 16 performs air conditioning of the indoor 14 of the reactor building 10, that is, ventilation and temperature adjustment, and functions as HVAC (Heating, Ventilation and Air Conditioning).

  The air inlet 12 and the air conditioner 16 are connected by an emergency system flow path 18 as a flow path, and further connected by a regular system flow path 17 as another flow path. The normal system flow path 17 is a flow path for supplying outside air outside the reactor building 10 to the air conditioner 16 from the air inlet 12 as indicated by an arrow A (FIG. 1) during normal operation. Further, the emergency system flow path 18 is used when a flying object such as an aircraft collides with the reactor building 10 or its surroundings, a harmful substance is released to the outside 13 of the reactor building 10, or an explosion or a flame occurs. This is a flow path for supplying outside air outside the reactor building 10 from the air inlet 12 to the air conditioner 16 as indicated by an arrow B (FIG. 2) when an emergency event occurs.

  The normal system flow path 17 includes a normal system duct 20 that directly connects the air inlet 12 and the air conditioner 16, and a duct closing device 21 as a closing means disposed in the normal system duct 20. Composed. This duct closing device 21 includes a detection value from a seismometer 22 installed in the reactor building 10, a detection value from a sensor 23 installed near the inlet 12 in the wall 11 of the reactor building 10, and an operator The normal system duct 20 is closed by at least one of the operation commands from the operation device 24 operated by the air conditioner, and the outdoor air 13 of the reactor building 10 is air-conditioned from the inlet 12 through the emergency system flow path 18. 16 is supplied.

  The seismometer 22 detects the vibration of the reactor building 10. When the detected value of the seismometer 22 is equal to or greater than a predetermined value, the duct closing device 21 performs the closing operation of the normal system duct 20 assuming that a flying object such as an aircraft collides with the reactor building 10 or the vicinity thereof.

  The sensor 23 is a temperature sensor that detects the temperature near the inlet 12, a pressure sensor that detects the pressure near the inlet 12, a soot concentration sensor that detects the concentration of soot near the inlet 12, and a harmful substance near the inlet 12. It has at least one function of a harmful substance concentration sensor for detecting the concentration of toxic substances. When the detection value of the sensor 23 is equal to or greater than a predetermined value, an explosion or the like occurs in the vicinity of the reactor building 10 and the temperature or pressure rises, or a fire occurs in the vicinity of the reactor building 10 and a large amount of soot is generated. Alternatively, the duct closing device 21 performs the closing operation of the service duct 20 as a harmful substance such as a toxic gas is released around the reactor building 10.

  The emergency system flow path 18 includes a first emergency system duct 25, a second service system duct 26, a scrubbing pool 27 as a fire extinguishing / capturing means, and an adsorber 28 as an adsorbing means. .

  The scrubbing pool 27 is a pool in which water 30 as a liquid is stored, and the first emergency system duct 25 communicates the air inlet 12 and a region below the water surface 31 in the scrubbing pool 27. Accordingly, outside air from the air inlet 12 is introduced into the water 30 of the scrubbing pool 27 through the first emergency duct 25. For this reason, the flame (spark) in the outside air is extinguished by the water 30 of the scrubbing pool 27, and particulate matter (for example, combustion products such as soot) in the outside air is captured and removed.

The second emergency system duct 26 communicates the space above the water surface 31 of the scrubbing pool 27 with the air conditioner 16 and contains the adsorber 28. The adsorber 28 is ho Pukaraito (carbon monoxide adsorbent), activated carbon, which adsorbent material such as zeolite is filled in the container, harmful in the outside air introduced into the second emergency system duct 26 Substance is adsorbed and removed by adsorbent material. The suction means, instead of the suction unit 28, e Pukaraito, activated carbon, may be a honeycomb flow path adsorbent material is adhered to a surface such as zeolite.

Next, the operation will be described.
When the outside air is introduced from the air inlet 12 of the reactor building 10 into the air conditioner 16 installed in the indoor 14 of the reactor building 10, the outside air passes through the normal system duct 20 of the normal system channel 17 during normal operation. Is supplied to the air conditioner 16.

  In the case of an emergency event where a flying object such as an aircraft collides with the reactor building 10 or its surroundings, or an toxic substance is released to the outdoor 13 of the reactor building 10 or an explosion or flame occurs, this emergency event When the operating unit 24 is detected by the operator 22 or the sensor 23 or by the operator, the duct closing device 21 of the normal system flow path 17 closes the normal system duct 20, and the outside air from the intake port 12 is removed. Guide to the emergency system flow path 18.

  In the emergency system flow path 18, the water 30 in the scrubbing pool 27 extinguishes the flame in the outside air introduced into the emergency system flow path 18 and captures and removes particulate matter such as combustion products. The adsorber 28 adsorbs and removes harmful substances such as carbon monoxide in the outside air.

  Thereafter, the emergency system flow path 18 supplies the outside air from which the particulate matter and harmful substances are removed and the flame is extinguished to the air conditioner 16. As a result, the air conditioner 16 can continuously operate even when an emergency event occurs, as in normal operation.

Therefore, according to the first embodiment, the following effect (1) is obtained.
(1) Even if the outside air outside the reactor building 10 is contaminated by particulate matter such as combustion products or harmful substances such as toxic gas, the air inlet 12 and the air conditioner 16 of the reactor building 10 The scrubbing pool 27 of the emergency system flow path 18 connected to the unit uses the water 30 in the scrubbing pool 27 to capture and remove particulate matter in the outside air and extinguish the flame. The adsorber 28 of the system flow path 18 adsorbs and removes harmful substances in the outside air. As a result, even if the outside air is contaminated as described above, the outside air from the intake port 12 can be supplied to the air conditioner 16 so that the air conditioner 16 can be continuously operated. The environment of 10 indoors 14 can be maintained satisfactorily for a long time.

[B] Second Embodiment (FIG. 3)
FIG. 3: is a block diagram which shows the operation | movement at the time of the emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 2nd Embodiment. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description is simplified or omitted.

  The second embodiment is different from the first embodiment in that a plurality of duct closing means, for example, two (first duct closing device) are provided at predetermined intervals along the longitudinal direction of the normal duct 20 in the normal flow path 35. 36A and the second duct closing device 36B).

  In the first duct closing device 36A and the second duct closing device 36B, the first duct closing device 36A is disposed on the upstream side (the intake port 12 side) of the normal system duct 20, and the second duct closing device 36B is the normal system. It arrange | positions in the downstream of the duct 20 (air conditioner 16 side). And each of these 1st duct closing device 36A and 2nd duct closing device 36B is the sensor when the detection value of the seismometer 22 becomes more than predetermined value similarly to the duct closing device 21 of 1st Embodiment. When the detected value of 23 is equal to or greater than a predetermined value, the service duct 20 is simultaneously closed in at least one of cases where an operation command is output from the operating device 24 by the operation of the operator.

  For example, in an emergency event in which an aircraft or the like collided with the reactor building 10 or its surroundings and an explosion occurred, the detection value of the seismometer 22 that detects the vibration of the reactor building 10 due to the collision becomes a predetermined value or more. The first duct closing device 36A and the second duct closing device 36B simultaneously close the service duct 20. In this emergency event, the detection value of the sensor 23 for detecting at least one of an increase in the outside air temperature, an increase in the outside air pressure, an increase in the soot concentration, and an increase in the harmful substance concentration due to the explosion becomes a predetermined value or more. The first duct closing device 36A and the second duct closing device 36B simultaneously close the service duct 20.

  Due to the above configuration, the second embodiment also provides the following effect (2) in addition to the same effect as the effect (1) of the first embodiment.

  (2) In the normal system flow path 35 for supplying outside air from the air inlet 12 to the air conditioner 16, a plurality of duct closing devices (the first duct closing device 36 </ b> A and the second duct closing device 36 </ b> A and the second duct closing device 36 </ b> A) are arranged at predetermined intervals along the longitudinal direction of the normal system duct 20. A duct closing device 36B) is installed, and the first duct closing device 36A and the second duct closing device 36B are configured to simultaneously close the service duct 20.

  Accordingly, the flow rate of the outside air passing through the intake port 12 is very high, and the outside air flows in the normal system duct 20 before the upstream first duct closing device 36A closes the normal system duct 20. However, the second duct closing device 36B on the downstream side closes the normal system duct 20 at the same time as the first duct closing device 36A on the upstream side, whereby the flow of outside air in the normal system duct 20 can be blocked. As a result, it is possible to prevent outside air including flames and harmful substances from reaching the air conditioner 16, so that the soundness of the air conditioner 16 and the safety of the indoor 14 of the reactor building 10 can be ensured.

[C] Third embodiment (FIG. 4)
FIG. 4: is a block diagram which shows the operation | movement at the time of emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 3rd Embodiment. In the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is simplified or omitted.

  The third embodiment is different from the first embodiment in that a plurality of, for example, two scrubbing pools (first scrubbing pool 41A and second scrubbing pool 41B) are provided in the emergency flow path 40. It is a point installed continuously using the duct 42.

  The first scrubbing pool 41A and the second scrubbing pool 41B are pools that store water 30 as a liquid. The water 30 is preferably an acidic solution in at least one of the plurality of scrubbing pools, for example, the first scrubbing pool 41A, and an alkaline solution in at least another one, for example, the second scrubbing pool 41B.

  Further, the first emergency system duct 25 communicates the air inlet 12 and the lower region of the water surface 31 of the first scrubbing pool 41A. The intermediate emergency duct 42 communicates the space above the water surface 31 of the first scrubbing pool 41A and the region below the water surface 31 of the second scrubbing pool 41B. The second emergency system duct 26 communicates the space above the water surface 31 of the second scrubbing pool 41B with the air conditioner 16 and contains the adsorber 28 as in the first embodiment.

  Accordingly, outside air from the air inlet 12 is introduced into the water 30 of the first scrubbing pool 41A via the first emergency duct 25, and further, the water 30 of the second scrubbing pool 41B via the intermediate emergency duct 42. To be introduced. In this process, the flame in the outside air is extinguished by the water 30 of the first scrubbing pool 41A and the second scrubbing pool 41B, and the particulate matter is captured and removed. Further, when the harmful substance in the outside air is acidic, for example, it is neutralized by the water 30 of the second scrubbing pool 41B, and when it is alkaline, for example, it is neutralized by the water 30 of the first scrubbing pool 41A.

  Due to the above configuration, the third embodiment also provides the following effects (3) and (4) in addition to the same effects as the effect (1) of the first embodiment.

  (3) Since the outside air from the inlet 12 sequentially passes through the water 30 of the first scrubbing pool 41A and the water 30 of the second scrubbing pool 41B, the water 30 can surely extinguish the flame in the outside air, and Particulate matter such as combustion products in the outside air can be reliably captured and removed.

  (4) When one of the water 30 of the first scrubbing pool 41A and the water 30 of the second scrubbing pool 41A through which the outside air passes is an acidic solution and the other is an alkaline solution, harmful gases contained in the outside air Neutralization treatment can be performed regardless of whether the harmful substance is acidic or alkaline. As a result, damage to the adsorber 28 and the air conditioner 16 can be prevented, and its reliability can be maintained.

[D] Fourth embodiment (FIG. 5)
FIG. 5: is a block diagram which shows the operation | movement at the time of emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 4th Embodiment. In the fourth embodiment, portions similar to those in the first embodiment are denoted by the same reference numerals, and description thereof is simplified or omitted.

  The fourth embodiment is different from the first embodiment in that the first air conditioner 45 is connected to the service duct 20 of the service system flow path 17 and is connected to the second emergency system duct 26 of the service system flow path 18. The second air conditioner 46 is connected, and the first air conditioner 45 and the second air conditioner 46 are configured as separate air conditioners independent of each other.

  During normal operation, the normal system duct 20 in the normal system flow path 17 is not blocked by the duct closing device 21, so that outside air from the intake port 12 flows through the normal system duct 20 in the normal system flow path 17. Therefore, during this normal operation, the first air conditioner 45 operates and the second air conditioner 46 stops. Further, when an emergency event such as an aircraft collision occurs, the duct closing device 21 closes the service duct 20 of the service system flow path 17, and the outside air from the intake port 12 flows through the emergency system flow path 18. For this reason, when this emergency event occurs, the second air conditioner 46 operates and the first air conditioner 45 stops.

  With the configuration as described above, according to the fourth embodiment, in addition to the same effect as the effect (1) of the first embodiment, the following effect (5) is achieved.

  (5) The first air conditioner 45 is connected to the normal system flow path 17 and the second air conditioner 46 is connected to the emergency system flow path 18, and these air conditioners 45 and 46 are configured as separate air conditioners that are independent from each other. Has been. Therefore, each of the first air conditioner 45 and the second air conditioner 46 can be configured as an air conditioner according to the ventilation amount and output required for the normal system flow path 17 and the emergency system flow path 18 respectively. it can.

[E] Fifth embodiment (FIG. 6)
FIG. 6: is a block diagram which shows the operation | movement at the time of emergency in the intake structure of the reactor building as an intake structure of the building which concerns on 5th Embodiment. In the fifth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description is simplified or omitted.

  The fifth embodiment is different from the first embodiment in that the fire extinguishing / capturing means provided in the emergency system flow path 50 is replaced with the scrubbing pool 27 of the first embodiment as a spray chamber 51.

  In the spray chamber 51, a spray 52 capable of ejecting water droplets as a liquid is installed on the ceiling. Water droplets 53 are sprayed from the spray 52 to the outside air led from the air inlet 12 through the first emergency duct 25 into the spray chamber 50, so that the flame in the outside air is extinguished, and combustion products and the like Particulate matter is trapped. The particulate matter trapped in the water droplet 53 falls in the spray chamber 51 together with the water droplet 53 and stays at the bottom of the spray chamber 51.

  With the configuration as described above, the fifth embodiment has the same effect (1) as the first embodiment and the following effect (6).

  (6) A spray chamber provided with a spray 52 that is provided in the emergency flow channel 50 and extinguishes a flame in the outside air and captures and removes particulate matter, and a spray 52 capable of injecting water droplets 53 51, the flow resistance of the outside air flowing through the emergency system flow path 50 including the spray chamber 51 can be significantly reduced as compared with the case of the emergency system flow path 18 including the scrubbing pool 27. . As a result, the output of the air conditioner 16 that sucks outside air can be greatly reduced.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. Is included in the scope and gist of the invention, and is included in the invention described in the claims and the equivalents thereof.

  For example, in the present embodiment, the case where the building is the reactor building 10 has been described, but the building may be another building of the nuclear power plant or a building in another plant such as a chemical plant.

10 Reactor building (building)
12 Intake port 13 Outdoor 14 Indoor 16 Air conditioning equipment 17 Common system flow path (other flow paths)
18 Emergency system channel (channel)
20 Common system duct 21 Duct closing device (blocking means)
22 Seismometer 23 Sensor 24 Controller 25 First emergency system duct 26 Second emergency system duct 27 Scrubbing pool (fire extinguishing / capturing means)
28 Adsorber (Adsorption means)
30 Water (liquid)
35 Regular system channel (other channels)
36A First duct closing device (closing means)
36B Second duct closing device (closing means)
40 Emergency channel (channel)
41A First scrubbing pool (fire extinguishing / capturing means)
41B Second scrubbing pool (fire extinguishing / capturing means)
42 Middle emergency system duct 45 1st air conditioning equipment 46 2nd air conditioning equipment 50 Emergency system flow path (flow path)
51 Spray room (fire extinguishing / capturing means)
52 Spray 53 Water drop (liquid)

Claims (10)

An air conditioner that is installed indoors in a building to carry out indoor air conditioning;
An air inlet formed through the building;
It is connected to the air inlet and the air conditioner, and has a flow path provided with a fire extinguishing / capturing means and an adsorption means
The fire extinguishing / capturing means captures and removes particulate matter in the outside air taken in from the intake port and extinguishes the flame,
The adsorbing means adsorbs and removes harmful substances in the outside air ,
The air conditioning device and the intake port are connected to another flow path having a blocking means,
When said closing means are closed the other flow path, from the outside air is the air inlet, is configured so that supplied to the air-conditioning equipment through the flow path having the extinguishing-capturing means and said suction means An air intake structure of a building characterized by that. The closing means is installed in a building and detects a vibration of the building, a temperature sensor that is installed in the vicinity of the intake port and detects a temperature in the vicinity of the intake port, and is installed in the vicinity of the intake port. A pressure sensor that detects the pressure near the intake port, a soot concentration sensor that is installed near the intake port and detects the concentration of soot near the intake port, and is installed near the intake port and near the intake port The air intake of a building according to claim 1 , wherein the air intake of the building is configured to operate based on at least one detection value with a hazardous substance concentration sensor that detects a concentration of harmful substances in the vehicle or by an operation of an operator. Construction. The fire extinguishing / capturing means is a pool in which liquid is stored, and external air from the air inlet is introduced into the liquid in the pool, and the liquid is extinguished and the particulate matter is captured by the liquid. intake structure of the building according to claim 1 or 2, characterized in that the. The fire extinguishing / capturing means is a spray chamber provided with a spray capable of ejecting droplets, and the droplets are ejected from the spray to the outside air guided to the spray chamber from an intake port. The air intake structure for a building according to claim 1 or 2 , characterized in that the flame is extinguished and particulate matter is captured. The suction means, ho Pukaraito, activated carbon, the adsorber at least one adsorbent material of the zeolite is filled, or the claims 1 to 4 wherein the adsorbent material is characterized in that it is a honeycomb channel which is attached on the surface The air intake structure for a building according to any one of the above items. Said closure means to the other flow path, a plurality of installed at predetermined intervals along the longitudinal direction of the other flow path, claims 1 to 5 These closing means is characterized by being closable configured simultaneously The air intake structure for a building according to any one of the above. The building air intake structure according to any one of claims 1 to 6 , wherein a plurality of the fire extinguishing / trapping means are continuously installed in the flow path. 8. The building according to claim 7 , wherein the liquid used in the fire extinguishing / trapping means is an acidic solution in at least one of the plurality of fire extinguishing / trapping means, and an alkaline solution in at least one other. Intake structure. Building, characterized in that it comprises an intake structure of a building according to any one of claims 1 to 8. When introducing outside air from an air inlet formed penetrating into the building to an air conditioner that is installed indoors and performs air conditioning inside the building,
The fire extinguishing / capturing means provided in the flow path connected to the air inlet and the air conditioner captures and removes particulate matter in the outside air and extinguishes the flame,
Adsorption means provided in the flow path adsorbs and removes harmful substances in the outside air,
When the closing means provided in another flow path connected to the air inlet and the air conditioning equipment closes the other flow path,
An air intake method for a building, characterized in that outside air from which the particulate matter and the harmful substance are removed and the flame is extinguished is supplied to the air conditioner through the flow path from the intake port .

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