WO2023233552A1

WO2023233552A1 - Ventilation control device and ventilation control method

Info

Publication number: WO2023233552A1
Application number: PCT/JP2022/022215
Authority: WO
Inventors: 正樹小松
Original assignee: 三菱電機ビルソリューションズ株式会社
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-12-07

Abstract

Each of a plurality of ventilation devices (220) is configured to be able to operate in any one mode among a normal mode for performing an air supply operation and an air exhaust operation, an air supply mode for performing the air supply operation but not performing the air exhaust operation, and an air exhaust mode for performing the air exhaust operation but not performing the air supply operation. A processor (111) sets the mode of the ventilation device (220) installed in a first room used by a virus-infected person among a plurality of rooms to the air exhaust mode, and sets the mode of the ventilation device (220) installed in a second room including an adjacent room contacting the first room through a wall to the air supply mode. The processor (111) outputs the set modes of the plurality of ventilation devices (220) to the plurality of ventilation devices (220).

Description

Ventilation control device and ventilation control method

The present disclosure relates to a ventilation control device and a ventilation control method that control a plurality of ventilation devices installed in a plurality of rooms in a building.

If someone infected with a virus such as the coronavirus occurs in an office or other building, it is necessary to prevent secondary infection from occurring. For example, even if there is no longer an infected person in the room where the infected person was staying, such as due to hospitalization, there is a possibility that a new infected person infected by the infected person may still be working in that room.

Regarding ventilation of the room where an infected person has occurred, the air supply fan that brings in outside air into the room and the exhaust fan that exhausts indoor air outside are often operating normally. However, droplets of new infections may be in the air in that room.

An example of a technology related to air supply and exhaust when air is contaminated is the technology disclosed in Japanese Patent Laid-Open No. 2006-145072 (Patent Document 1). This technology allows automatic ventilation depending on the level of air contamination. When you press the operation button, the system sequentially selects air supply and exhaust operation that performs both air supply and exhaust at the same time, air supply operation that performs only air supply, and air supply operation that performs only exhaust air. The control device instructs an exhaust operation that performs the following steps.

Japanese Patent Application Publication No. 2006-145072

The room where the infected person was staying and the room next door are often connected by a door or attic. In this case, unless the droplets of the new infected person fall onto the floor, there is a possibility that they will flow into the next room through the door or ceiling, leading to further secondary infection in the next room. . In order to prevent such a situation, the relationship between the possibility of inflow of droplets and the control method of air supply/exhaust operation should be considered, but this point has not been considered in the technology disclosed in Patent Document 1. .

The present disclosure has been made to solve such problems, and the purpose of the present disclosure is to suppress the occurrence of secondary infections when a virus-infected person stays in a building. An object of the present invention is to provide a ventilation control device and a ventilation control method.

The ventilation control device of the present disclosure is a device that controls a plurality of ventilation devices installed in a plurality of rooms in a building. The ventilation control device includes a processor and a memory that stores a program executable by the processor. Each of the plurality of ventilation devices has a normal mode in which air supply operation and exhaust operation are performed, an air supply mode in which air supply operation is performed but not exhaust operation, and an exhaust mode in which exhaust air operation is performed but air supply operation is not performed. It is configured so that it can be operated in either mode. The processor determines the mode of the ventilation system installed in the first room used by the person infected with the virus to be the exhaust mode among the multiple rooms, and sets the mode of the ventilation system installed in the first room that was used by the person infected with the virus to the exhaust mode, and sets the mode of the ventilation system installed in the first room that was used by the person infected with the virus to exhaust mode, and the The mode of the ventilation system installed in the second room containing the air is determined to be the air supply mode. The processor outputs the determined modes of the plurality of ventilators to the plurality of ventilators.

Further, the ventilation control method of the present disclosure is a method for controlling a plurality of ventilation devices installed in a plurality of rooms provided in a building. Each of the plurality of ventilation devices has a normal mode in which air supply operation and exhaust operation are performed, an air supply mode in which air supply operation is performed but not exhaust operation, and an exhaust mode in which exhaust air operation is performed but air supply operation is not performed. It is configured so that it can be operated in either mode. The ventilation control method is to set the mode of the ventilation system installed in the first room used by the virus-infected person to exhaust mode among multiple rooms, and to The method includes a step of determining a mode of a ventilation device installed in a second room including the room to be an air supply mode, and a step of outputting the determined modes of the plurality of ventilation devices to the plurality of ventilation devices.

According to the present disclosure, when a virus-infected person stays in a building, it is possible to suppress the occurrence of secondary infections.

FIG. 1 is a diagram showing a hardware configuration of a ventilation control system according to the present embodiment. FIG. 3 is a diagram for explaining the operation of a ventilation system in each room. FIG. 3 is a diagram for explaining an example of installation of a ventilation device. It is a figure showing an example of table A. 3 is a diagram showing an example of a command table A. FIG. FIG. 3 is a diagram for explaining the operation of the ventilation device when an infected person occurs. FIG. 3 is a diagram for explaining the operation of the ventilation device when an infected person occurs. It is a figure showing an example of table B. 7 is a diagram showing an example of a command table B. FIG. FIG. 3 is a diagram for explaining the operation of the ventilation device when an infected person occurs. It is a flowchart of terminal side processing and server side processing. It is a figure showing an example of a display on a terminal. It is a figure showing an example of a display on a terminal. FIG. 3 is a diagram for explaining an installation example of a total heat exchanger type ventilation device.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Although a plurality of embodiments will be described below, it has been planned from the beginning of the application to appropriately combine the configurations described in each embodiment. In addition, the same reference numerals are attached to the same or corresponding parts in the drawings, and the description thereof will not be repeated.

FIG. 1 is a diagram showing the hardware configuration of the ventilation control system according to the present embodiment. The ventilation control system includes a ventilation control device 100, an air conditioner 200, and a terminal 400. The ventilation control device 100 is a device that controls a plurality of ventilation devices 220 installed in a plurality of rooms (rooms A to F in this embodiment) in a building. A "room" in this embodiment refers to a section of a building partitioned off by a wall or the like, and is also referred to as a "room." In addition to the living room, the room may also include common areas such as a hallway and a lobby.

The ventilation control device 100 includes a processor 111 as a processing section, a memory 112, and a communication IF (Interface) 113 as a communication section. These are communicably connected to each other via a bus.

The processor 111 is, for example, a CPU (Central Processing Unit). The memory 112 may be configured to include a ROM (Read Only Memory), a RAM (Random Access Memory), and a storage section. The storage unit is a nonvolatile storage device. The storage unit may be, for example, an HDD (Hard Disk Drive) or an SSD (Solid State Drive).

The processor 111 loads programs stored in the ROM into the RAM and executes them to realize various functions of the ventilation control device 100. The processor 111 performs processing such as controlling the plurality of ventilation devices 220. The ROM stores a program in which processing procedures of the ventilation control device 100 are written. The RAM serves as a work area when the processor 111 executes a program, and temporarily stores programs and data used when executing the program. The ventilation control device 100 can be connected to the air conditioning equipment 200 and the terminal 400 by wire or wirelessly via the communication IF 113.

Air conditioning equipment 200 is installed in the building. The air conditioning equipment 200 includes a plurality of ventilation devices 220 and a management device 210 that manages various air conditioning equipment including the plurality of ventilation devices 220. Ventilation devices 220 are installed in rooms A to F, respectively. Each ventilation device 220 includes an air supply fan 230 and an exhaust fan 240. For example, by performing an air supply operation in which the air supply fan of the ventilation device 220 installed in the A room is operated, outside air can be supplied to the A room. By performing an exhaust operation in which the exhaust fan of the ventilation device 220 installed in the A room is operated, the air in the A room can be exhausted to the outside.

Each ventilation device 220 operates in a normal mode where air supply operation and exhaust operation are performed, an air supply mode where air supply operation is performed but no exhaust operation is performed, and an exhaust mode where air exhaust operation is performed but air supply operation is not performed. It is configured so that it can be operated in either mode.

The management device 210 can acquire the operating state of each ventilation device 220 (in which mode it is operating). Furthermore, the management device 210 can issue an operation command (specify a mode) to each ventilation device 220. The ventilation control device 100 can obtain the operating status of each ventilation device 220 and issue an operation command to each ventilation device 220 via the management device 210.

The terminal 400 is, for example, a mobile terminal such as a smartphone. The terminal 400 is used by a user (building manager). The administrator can use the terminal 400 to check the operating status of each ventilation device 220 and issue commands to each ventilation device 220.

The terminal 400 includes a processor (CPU) 411, a memory 412, a communication IF 413, an input section 420, and a display section 421. These are communicably connected to each other via a bus. Similarly, the memory 412 may be configured to include a ROM, a RAM, and a storage section.

The processor 411 loads programs stored in the ROM into the RAM and executes them to realize various functions of the terminal 400. The ROM stores a program in which the processing procedure of the terminal 400 is written. The terminal 400 can be connected to the ventilation control device 100 via the communication IF 413.

The input unit 420 accepts input from the user. The input unit 420 is, for example, a touch panel, but may also be a keyboard or a mouse. The display unit 421 displays various information. The display unit 421 is, for example, a liquid crystal display or a display.

FIG. 2 is a diagram for explaining the operation of the ventilation device 220 in each room (in this example, a living room). FIG. 2 schematically shows a plan view of each room on the floor 10 of the building as viewed from the ceiling.

There are six rooms on floor 10: Room A, Room B, Room C, Room D, Room E, and Room F. A ventilation system 220 is installed in each living room. As shown in FIG. 2, the air supply fan 230 of the ventilation device 220 in each room takes in outside air into the room, and the exhaust fan 240 of the ventilation device 220 exhausts the air from each room to the outside.

Air in one room may flow into another room. Therefore, if a person infected with the virus is staying in one room, there is a possibility that droplets from the infected person may flow into another room. Doors are installed between each room, and people can open the door to move to the next room. For this reason, there is a possibility that droplets from an infected person may enter through an open door or a gap in the door.

Additionally, since there is no partition in the ceiling of each living room, there is a possibility that droplets from an infected person may flow into other living rooms via this space. For example, air containing droplets in a living room enters the attic through the outlet of an air conditioner installed in the ceiling, and then air containing droplets enters the living room through the outlet of an air conditioner in another room. Air may enter. In this case, there is a higher possibility that droplets will enter the living room that is closer to the room where the infection occurred, but the possibility that the droplets will enter the room becomes lower as the distance from the room where the infection occurs decreases.

FIG. 3 is a diagram for explaining an installation example of the ventilation device 220. A ventilation system 220 is installed in Room A on the floor 10. An exhaust grill 241 and an air intake grill 231 are provided on the ceiling of Room A. Further, the outer wall 21 of the A room is provided with an air supply port 232 and an air exhaust port 242. The ducts 251 to 254, the air supply fan 230, and the exhaust fan 240 are installed in the ceiling of Room A.

When the air supply fan 230 is driven, outside air is taken in from the air supply port 232, and is supplied from the air intake grille 231 into the A room via the duct 253 and the duct 254. When the exhaust fan 240 is driven, indoor air is taken in from the exhaust grill 241, and the indoor air is discharged outdoors from the exhaust port 242 via the duct 252 and the duct 251.

When operating the ventilation device 220, normally both the air supply fan 230 and the exhaust fan 240 are operated to supply and exhaust air (operation in normal mode). When the ventilation device 220 is stopped, both the air supply fan 230 and the exhaust fan 240 are stopped. In this embodiment, only air can be supplied by operating only the air supply fan 230 (operation in air supply mode). Further, only the exhaust fan 240 can be operated to perform exhaust only (operation in exhaust mode).

The memory 112 of the ventilation control device 100 stores a plurality of tables in which relationships between a first room (also referred to as "occurrence room") and a second room (also referred to as "response room") are determined in advance. . The plurality of tables include table A and table B, which will be described later.

Here, the "outbreak room" refers to the room where the virus-infected person occurred (the room where the virus-infected person was staying). The "response room" indicates a room in which an infected person has occurred in the outbreak room and it is necessary to take action by switching the mode of the ventilation device 220.

Each ventilation device 220 normally operates in normal mode. The ventilation control device 100 determines the mode of the ventilation device 220 installed in the outbreak room used by the virus-infected person among the plurality of living rooms to the exhaust mode, and changes the mode of the ventilation device 220 installed in the response room. Set the mode to air supply mode. The ventilation control device 100 outputs the determined modes of the plurality of ventilation devices 220 to the plurality of ventilation devices 220. Thereby, each ventilation device 220 operates in the determined mode.

FIG. 4 is a diagram showing an example of table A. Table A associates the relationship between the occurrence room and the corresponding room. Table A specifies which room corresponds to the outbreak room. In the table, "1" means a room that corresponds to the corresponding room, and "0" means that the room does not correspond to the corresponding room.

Specifically, as shown in FIG. 4, when room A is the outbreak room, the corresponding rooms are room B, room D, and room E. Similarly, when room B is the outbreak room, the corresponding rooms are room A, room C, and room F. When room C is the outbreak room, the corresponding rooms are room B and room F. When room D is the outbreak room, the corresponding rooms are room A and room E. When room E is the outbreak room, the corresponding rooms are room A, room D, and room F. When room F is the outbreak room, the corresponding rooms are room B, room C, and room E.

The correspondence between the outbreak room and the response room can be set by the user in advance. When table A is set by the user, command table A is automatically generated. Command table A is a table for issuing operation commands to ventilation device 220. FIG. 5 is a diagram showing an example of the command table A.

In command table A, only the exhaust fan 240 is operated in the living room where "exhaust only" is set corresponding to the room where the occurrence occurs (operation in exhaust mode). In command table A, only the air supply fan 230 is operated in the living room where "air supply only" is set corresponding to the room where the air occurs (operation in air supply mode). In the command table A, only the air supply fan 230 and the exhaust fan 240 are operated in the living room where "air supply/exhaust" is set corresponding to the room where the problem occurs (operation in normal mode).

In command table A, a command is issued to perform only exhaust (exhaust mode) for the generation chamber. That is, in the command table A, "exhaust only" is set for the location where the occurrence room = corresponding room. In the room where the infection occurred, air is vented to the outside to prevent the virus from spreading to neighboring rooms.

In command table A, a command is issued to perform only air supply (air supply mode) to the corresponding room=1. The response room includes an adjacent room that is in contact with the outbreak room with a wall (inner wall) in between. This is done to prevent the virus from spreading through the ceiling, gaps between interior walls, or doors installed on interior walls.

For example, if air is supplied from the outside in the generation chamber and exhausted to the outside in the adjacent room (corresponding room), air will easily flow from the generation chamber to the adjacent room. Therefore, in order to prevent such a flow, air is supplied from the outside in the adjacent chamber and exhausted to the outside in the generation chamber. Although this makes it easier for air to flow from the adjacent chamber to the generation chamber, it becomes difficult for air to flow from the generation chamber to the adjacent chamber. Air supply and exhaust (normal mode) are being carried out as usual for living rooms where there is a low possibility of virus inflow.

6 and 7 are diagrams for explaining the operation of the ventilation device 220 when an infected person occurs. FIG. 6 shows a case where virus infection occurs in room B (occurrence room=room B). When table A is used, the corresponding rooms for the occurrence room = room B are room A, room C, and room F. Only exhaust is performed in the room where the incident occurred (Room B), only air is supplied in the response rooms (Room A, Room C, Room F), and commands are given to supply and exhaust air in other occupied rooms (Fig. (See Instruction Table A in Section 5). Room A, Room C, and Room F are living rooms that are in contact with Room B across a wall.

In this situation, a case where an infected person further occurs in room E is shown in Figure 7. The corresponding rooms for the occurrence room = Room E are Room A, Room D, and Room F. According to command table A in FIG. 5, only exhaust is performed in the generation room (room E), and only air is supplied in the corresponding rooms (room A, room D, and room F).

As a result, as shown in FIG. 7, the operation is switched so that only air exhaust is performed in the newly generated room E, and only air is supplied to room D, which is the corresponding room of room E. In addition, when there are multiple generation chambers, the generation chamber and the corresponding chamber may overlap, but in this case, only exhaust is performed as the generation chamber.

Next, Table B will be explained. Table B is a table used when it is desired to have stronger infection control measures than table A. FIG. 8 is a diagram showing an example of table B.

In table B, the corresponding room includes a semi-adjacent room that is in contact with the adjacent room across a wall. On the other hand, in table A, the corresponding rooms do not include semi-adjacent rooms. This will be explained in detail below.

For example, as shown in FIG. 6, on table A, the corresponding rooms of room B are room A, room C, and room F, which are adjacent rooms that are in contact with room B across a wall. In table B, the corresponding rooms of room B further include room E. Room E is a semi-adjacent room that is in contact with Room A and Room F, which are adjacent rooms of Room B, across a wall. In this way, in table B, the corresponding rooms include semi-adjacent rooms, but in table A, the corresponding rooms do not include semi-adjacent rooms.

In table B, the possibility of droplets flowing into the generation room is not as high as in the adjacent room, but the semi-adjacent room where droplets may enter through the ceiling is also operated in air supply mode as a response room. I try to let them do it. This makes it possible to take measures with a higher degree of safety.

In table B, room B and room E are set to have a relationship of corresponding rooms to the outbreak room, and rooms A and F are set to have a relationship of corresponding rooms to the outbreak room. In table B, the response room for the outbreak room = room A = room F, the response room for the outbreak room = room B = room E, the response room for the outbreak room = room E = room B, the response room for the outbreak room = room F = A This table differs from table A in that "1" is set for the room.

The command table corresponding to table B is command table B. FIG. 9 is a diagram showing an example of table B. In command table B, the response room for the outbreak room = room A = room F, the response room for the outbreak room = room B = room E, the response room for the outbreak room = room E = room B, the response room for the outbreak room = room F = This differs from command table A in that "air supply only" is set for room A.

FIG. 10 is a diagram for explaining the operation of the ventilation system 220 when an infected person occurs. FIG. 10 shows a case where an infected person occurs in room B (infection room=room B). When table B is used, the corresponding rooms for the occurrence room = room B are room A, room C, room E, and room F. Only exhaust is performed in the room where the incident occurred (Room B), only air is supplied in the response rooms (Room A, Room C, Room E, Room F), and instructions are given for air supply and exhaust to be performed in other rooms. (See command table B in Figure 8). In this way, when compared with the example of FIG. 6 using table A (command table A), only air supply operation is performed in room E.

FIG. 11 is a flowchart of terminal-side processing and server-side processing. The processing shown in this flowchart may be started at the timing when the ventilation control device 100 and the terminal 400 are powered on.

When the terminal-side processing starts, the terminal 400 determines in S101 whether or not the "send" button on the input screen has been clicked. If the "send" button is clicked (YES in S101), the terminal 400 advances the process to S102. If the terminal 400 does not determine that the "send" button has been clicked (NO in S101), the process returns to S101.

Hereinafter, an example of an input screen on the terminal 400 will be described using FIGS. 12 and 13. 12 and 13 are diagrams showing display examples on the terminal 400. As shown in FIG. 12, an input screen is displayed on the display unit 421 of the terminal 400. On the input screen, the current operating status of the ventilation system 220 on the floor 10 is displayed, and it is also possible to select "presence of infection" and "strength of countermeasures" for each room.

On the left side of the screen, the status of rooms A to F on the floor 10 is shown. Currently, air is being supplied and exhausted from all living rooms (operating in normal mode). In the "infection status" item on the right side of the input screen, you can select "infection" or "no infection." In the initial state, "no infection" is set for all rooms A to F. In this example, it is assumed that an infected person occurs in room B. Thereby, the user changes the setting of room B from "no infection" to "infection".

Furthermore, in the "Countermeasure Strength" item, "Normal (Table A)" and "Strong (Table B)" can be selected. When the user determines that the strength of the countermeasure should be increased, the user selects "Strong". In this case, table B is used. If the user determines that there is no need to increase the strength of the countermeasure, the user selects "normal". In this case, table A is used.

　Countermeasure strength indicates the strength of virus countermeasures. For example, if you want to take general measures, select "Normal", and if you want to take careful measures, or if the measure is highly urgent, select "Strong".

It is assumed that the user has currently selected "Normal (Table A)". The user then clicks the "Send" button. In this case, YES is determined in S101.

In S102, the terminal 400 sets the set table as the usage table. In the above example, "Table A" is set as the usage table. In S103, the terminal 400 sets the set living room as the occurrence room. In the above example, "Room B" is set as the occurrence room. Terminal 400 transmits setting data to ventilation control device 100 in S104. In the above example, data including the table used = table A and the room where the occurrence occurs = room B is transmitted as the setting data.

On the other hand, when the server-side processing starts, the ventilation control device 100 determines in S201 whether or not setting data has been received. When the ventilation control device 100 determines that the setting data has been received (YES in S201), the ventilation control device 100 advances the process to S202. When the ventilation control device 100 does not determine that the setting data has been received (NO in S201), the process returns to S201.

In S202, the ventilation control device 100 acquires the occurrence room (selected from rooms A to F) and the usage table (selected from tables A and B). In the above example, the usage table=table A and the occurrence room=room B are acquired.

In S203, the ventilation control device 100 generates commands to the air supply fan 230 and exhaust fan 240 from the command table corresponding to the usage table. In the above example, the situation is the same as that in FIG. In this case, only exhaust is performed in the generating room (Room B), only air is supplied in the corresponding rooms (Room A, C, F), and instructions are given to supply and exhaust air in the other occupied rooms. (See command table A in Figure 5).

In S204, the ventilation control device 100 transmits commands to the air supply fan 230 and the exhaust fan 240 to the management device 210 of the air conditioning equipment 200. As a result, the operation of the air supply fan 230 and exhaust fan 240 in each room is changed (the mode is updated).

The ventilation control device 100 generates display information in S205. The display information is the operating status (current status) of the ventilation device 220 displayed on the display unit 421 of the terminal 400. The ventilation control device 100 transmits the display information in S206, and returns the process to S201.

Returning to the terminal side processing, the terminal 400 determines whether display information has been received in S105. If the terminal 400 determines that the display information has been received (YES in S105), the process proceeds to S106. If the terminal 400 does not determine that the display information has been received (NO in S105), the process returns to S105.

The terminal 400 displays the display information in S106, and returns the process to S101. As a result, the operating status (current status) of the ventilation device 220 is updated as shown in FIG. 12. In the above example, "exhaust only" and "infection" are displayed in room B where infection has occurred. Further, in the corresponding rooms A, C, and F, "air supply only" and "corresponding room" are displayed. The display for other rooms is not updated.

As explained above, the ventilation control device 100 sets the occurrence room based on the information of the room input by the user from the input unit 420. The ventilation control device 100 sets a corresponding room based on the set outbreak room and table. Then, the ventilation control device 100 updates the modes of the plurality of ventilation devices 220 based on the information about the room input from the input unit 420.

In the above situation of FIG. 12, let us further assume that an infected person occurs in room E. In this case, as shown in FIG. 13, the user sets room E to "infected" in the infection presence/absence item. It is also assumed that the user thinks that the countermeasure should be strengthened and selects "High (Table B)" in the countermeasure strength item.

If the "Send" button is clicked in this state, the processes of S201 to S206 are executed. In this case, the occurrence rooms are set as room B and room E, and the table used is set as table B. In this case, based on command table B (see Figure 9), only exhaust is performed (operated in exhaust mode) in the generation rooms (Room B, Room E), and in the corresponding rooms (Room A, Room C, Room D, Room F). ), a command is issued to perform only air supply (operate in air supply mode). Then, as shown in the lower diagram of FIG. 13, the display of the current situation is updated (Room E changes to the display of the outbreak room (infection), and Room D changes to the display of the response room).

In this way, the ventilation control device 100 is configured to be able to switch between a plurality of tables including table A and table B based on the switching information (setting of countermeasure strength) input from the input unit 420.

In addition, in the state shown in the lower diagram of FIG. 12, if only the countermeasure strength is changed (that is, changed from "Normal (Table A)" to "Strong (Table B)"), the occurrence room = Room B is set, Use table = table B is set. In this case, based on command table B (Figure 9), only exhaust is performed in the generation room (room B) (operated in exhaust mode), and air is supplied in the corresponding rooms (room A, room C, room E, room F). A command is given to only perform the following operations (operate in supply air mode). This is the same situation as in FIG. 10, and as a result of increasing the strength of the measures, "Room E" is newly added as a response room.

Also, suppose that in the state shown in the lower diagram of FIG. 13, measures against room E are no longer required. This is a situation where, for example, it has been confirmed that there are no new infected persons in Room E, so the setting of Room E = outbreak room is canceled. In this case, the user changes the settings for room E to "no infection" and clicks the "send" button. In this case, table B is selected, so the state shown in FIG. 10 is reached. Further, assume that the user changes the setting of room E to "no infection" and returns it to "normal (table A)". In this case, the state returns to the state shown in the lower diagram of FIG. 12 (the state shown in FIG. 6).

In this embodiment, the ventilation device 220 shown in FIG. 3 is exemplified as the ventilation device. However, the ventilation device is not limited to this, and may be a total heat exchanger type ventilation device. FIG. 14 is a diagram for explaining an installation example of the total heat exchanger type ventilation device 310. The total heat exchanger type ventilation device 310 has one built-in air supply fan and one exhaust fan.

As shown in FIG. 14, a total heat exchanger type ventilation system 310 is installed in room A on the floor 10. An exhaust grill 341 and an air supply grill 331 are provided on the ceiling of Room A. Further, the outer wall 21 of the A room is provided with an air supply port 332 and an air exhaust port 342. The ducts 351 to 354 are installed in the ceiling of room A.

When the air supply fan 330 is driven, outside air is taken in from the air supply port 332, and the outside air is supplied from the air supply grill 331 into the A room via the duct 353 and the duct 354. When the exhaust fan 340 is driven, indoor air is taken in from the exhaust grill 341, and the indoor air is exhausted to the outdoors from the exhaust port 342 via the duct 352 and the duct 351.

When operating the total heat exchanger type ventilation system 310, normally both the air supply fan 330 and the exhaust fan 340 are operated to supply and exhaust air (operation in normal mode). When the total heat exchanger type ventilation device 310 is stopped, both the air supply fan 330 and the exhaust fan 340 are stopped.

In this embodiment, like the ventilation system 220, the total heat exchanger type ventilation system 310 can also be operated in an air supply mode in which air is only supplied by operating only the air supply fan 330. It is also possible to operate in an exhaust mode in which only the exhaust fan 340 is operated to perform exhaust only.

By doing so, even when the total heat exchanger type ventilation device 310 is installed, the operations described using FIGS. 1 to 13 can be realized. Note that whether the ventilation device 220 is installed or the total heat exchanger type ventilation device 310 is installed, the ease with which droplets spread is basically the same.

As described above, in this embodiment, each of the plurality of ventilation devices 220 operates in a normal mode in which air supply operation and exhaust operation are performed, and an air supply mode in which air supply operation is performed but in which exhaust operation is not performed. It is configured to be operable in either mode, including an exhaust mode in which exhaust operation is performed but air supply operation is not performed. The ventilation control device 100 determines the mode of the ventilation device 220 installed in the first room (the outbreak room) used by the virus-infected person out of the plurality of rooms to be the exhaust mode, and closes the outbreak room and the wall. The mode of the ventilation device 220 installed in the second room (corresponding room) including the adjacent rooms that are separated and in contact with each other is determined to be the air supply mode. The ventilation control device 100 outputs the determined modes of the plurality of ventilation devices 220 to the plurality of ventilation devices 220. By doing this, it is possible to reduce the possibility of droplets flowing from the outbreak room into the response room, thereby suppressing the occurrence of secondary infections in the event that a virus-infected person stays in the building. can do.

Further, the ventilation control device 100 sets the room where the problem occurs based on the room information input from the input unit 420 input by the user. The ventilation control device 100 sets a corresponding room based on the set outbreak room and table. By doing so, the user can immediately suppress the occurrence of secondary infections simply by setting the outbreak room.

Furthermore, the ventilation control device 100 updates the modes of the plurality of ventilation devices 220 based on the room information input from the input unit 420. As a result, it is possible to quickly respond to rooms where new infected people have occurred and to remove countermeasures for rooms where countermeasures are no longer required.

Furthermore, the memory 112 of the ventilation control device 100 stores a plurality of tables in which the relationship between the occurrence room and the corresponding room is determined in advance. The plurality of tables include table A and table B. In table B, the corresponding rooms include semi-adjacent rooms that are in contact with adjacent rooms across a wall. In table A, the corresponding rooms do not include semi-adjacent rooms. The ventilation control device 100 is configured to be able to switch between a plurality of tables including table A and table B based on switching information input from the input unit 420. By doing so, measures to prevent infection can be quickly strengthened depending on the situation.

In this embodiment, two tables, table A (normal) and table B (strong), are prepared and configured to be switchable. However, the present invention is not limited to this, and three or more tables may be prepared depending on the strength of the countermeasure. For example, a table C may be prepared in which a room further adjacent to the corresponding room set in table B is set as the corresponding room. As a result, when table C is used, infection prevention measures can be taken for a wider range of rooms than table B.

Furthermore, in this embodiment, in table A, an adjacent chamber that is in contact with the occurrence chamber across the inner wall is set as the corresponding chamber. However, the present invention is not limited to this, and the user may freely set the corresponding room. For example, if a fire wall is installed and the degree of airtightness is high, there is no need to set this as a response room even if the room is in contact with the outbreak room across an inner wall (fire wall). Furthermore, if the rooms are separated by simple partitions, droplets are likely to spread. In such a case, the corresponding rooms may be set in a wider range in table A. In this way, the corresponding rooms at the table can be set by considering the probability that droplets will spread while taking into account the distance and structure between the rooms.

It is also planned that the embodiments disclosed herein will be implemented in appropriate combinations within a technically consistent range. The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The technical scope indicated by the present disclosure is indicated by the claims rather than the description of the embodiments described above, and it is intended that all changes within the scope and meanings equivalent to the claims are included. .

10 floor, 21 outer wall, 22 inner wall, 100 ventilation control device, 111,411 processor, 112,412 memory, 113,413 communication IF, 200 air conditioning equipment, 210 management device, 220 ventilation system, 230 air supply fan, 231 air supply Grill, 232 Air supply port, 240 Exhaust fan, 241 Exhaust grill, 242 Exhaust port, 251-254 Duct, 310 Total heat exchanger type ventilation system, 330 Air supply fan, 331 Air supply grill, 332 Air supply port, 340 Exhaust Fan, 341 Exhaust grill, 342 Exhaust port, 351-354 Duct, 420 Input section, 421 Display section.

Claims

A ventilation control device that controls multiple ventilation devices installed in multiple rooms in a building,
a processor;
a memory that stores a program executable by the processor;
Each of the plurality of ventilation devices has a normal mode in which air supply operation and an exhaust operation are performed, an air supply mode in which the air supply operation is performed but the exhaust operation is not performed, and an air supply mode in which the exhaust operation is performed but the air supply operation is not performed. It is configured so that it can be operated in either exhaust mode or non-exhaust mode.
The processor includes:
The mode of the ventilation system installed in the first room that was used by the person infected with the virus among the plurality of rooms is set to the exhaust mode, and the adjacent room that is in contact with the first room through a wall is determining the mode of the ventilation device installed in the second room containing the air supply mode;
A ventilation control device that outputs the determined mode of the plurality of ventilation devices to the plurality of ventilation devices.
The memory stores a table in which a relationship between the first chamber and the second chamber is determined in advance,
The processor includes:
setting the first room based on room information input from an input section input by a user;
The ventilation control device according to claim 1, wherein the second room is set based on the set first room and the table.
The ventilation control device according to claim 2, wherein the processor updates the mode of the plurality of ventilation devices based on room information input from the input unit.
The table includes a first table and a second table,
In the second table, the second chamber includes a semi-adjacent chamber that is in contact with the adjacent chamber across a wall,
In the first table, the second chamber does not include the semi-adjacent chamber,
The ventilation control device according to claim 2 or 3, wherein the processor switches between the first table and the second table based on switching information input from the input unit.
A ventilation control method for controlling multiple ventilation devices installed in multiple rooms in a building, the method comprising:
Each of the plurality of ventilation devices has a normal mode in which air supply operation and an exhaust operation are performed, an air supply mode in which the air supply operation is performed but the exhaust operation is not performed, and an air supply mode in which the exhaust operation is performed but the air supply operation is not performed. It is configured so that it can be operated in either exhaust mode or non-exhaust mode.
The mode of the ventilation system installed in the first room that was used by the person infected with the virus among the plurality of rooms is set to the exhaust mode, and the adjacent room that is in contact with the first room through a wall is determining the mode of a ventilation device installed in a second room containing the air supply mode;
A ventilation control method comprising the step of outputting the determined mode of the plurality of ventilation devices to the plurality of ventilation devices.