WO2022123661A1

WO2022123661A1 - Ventilation information display device

Info

Publication number: WO2022123661A1
Application number: PCT/JP2020/045731
Authority: WO
Inventors: 貴大橋川
Original assignee: 三菱電機株式会社
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2022-06-16
Also published as: US20230375204A1; JP7459301B2; EP4261466A1; EP4261466A4; JPWO2022123661A1

Abstract

This ventilation information display device (10) comprises functions of a ventilation information acquisition unit (113) and a display unit (115). The ventilation information acquisition unit (113) acquires: required ventilation information indicating a required ventilation amount which is a ventilation amount required in a target space; and actual ventilation information indicating an actual ventilation amount which is a ventilation amount of a ventilation device installed in the target space. The display unit (115) displays, on a display machine, a required ventilation amount indicated by the required ventilation information and an actual ventilation amount indicated by the actual ventilation information acquired by the ventilation information acquisition unit (113).

Description

Ventilation information display device

This disclosure relates to a technique for displaying information on ventilation.

At the time of equipment design, the required ventilation volume, which is the ventilation volume required in the target space, is estimated from the floor area and the occupied area per person, and the capacity of the ventilation device is selected. On the other hand, in the actual usage environment, the number of people in the target space changes from moment to moment, so that the required ventilation volume fluctuates.

Patent Document 1 describes that the number of people in the target space is detected, the required ventilation volume is calculated based on the detected number of people, and the ventilation volume is controlled according to the calculated required ventilation volume.

Japanese Unexamined Patent Publication No. 2020-038052

When the required ventilation volume exceeds the maximum ventilation capacity of the ventilation device, that is, when the ventilation volume is insufficient, the user can take measures such as opening the window ventilation and reducing the number of people in the room to reduce the ventilation volume. Can be accommodated. However, it is difficult for the user to grasp the required ventilation volume and the actual ventilation volume of the ventilation device during operation, and determine whether the ventilation volume is insufficient.
It is an object of the present disclosure to make it easy for the user to grasp the required ventilation volume and the actual ventilation volume of the ventilation device during operation.

The ventilation information display device according to this disclosure is
Ventilation information acquisition unit that acquires the required ventilation information indicating the required ventilation volume, which is the target value of the ventilation volume in the target space, and the actual ventilation information indicating the actual ventilation volume, which is the ventilation volume of the ventilation device installed in the target space. When,
It is provided with a display unit that displays the required ventilation volume indicated by the required ventilation information acquired by the ventilation information acquisition unit and the actual ventilation volume indicated by the actual ventilation information.

In this disclosure, required ventilation information and actual ventilation information are displayed. By checking the displayed information, the user can easily grasp the required ventilation volume and the actual ventilation volume. As a result, it is possible to identify that the ventilation volume is insufficient, and it is possible to take measures such as opening windows and reducing the number of people in the room.

The block diagram of the ventilation system 1 which concerns on Embodiment 1. FIG. The figure which shows the structural example of the ventilation apparatus 2 which concerns on Embodiment 1. FIG. The block diagram of the ventilation information display device 10 which concerns on Embodiment 1. FIG. The flowchart of the process of the ventilation information display device 10 which concerns on Embodiment 1. FIG. It is explanatory drawing of the calculation method of the actual ventilation volume which concerns on Embodiment 1, and is the figure which shows the correlation between the torque current which realizes the target air volume, and the motor frequency. It is explanatory drawing of the calculation method of the actual ventilation volume which concerns on Embodiment 1, and is the figure which shows the relationship between the air volume and static pressure. An explanatory diagram of a display process according to the first embodiment. Explanatory drawing of maintenance or replacement timing which concerns on modification 1. FIG. The block diagram of the ventilation information display device 10 which concerns on Embodiment 2. FIG. The flowchart of the recording process which concerns on Embodiment 2. The flowchart of output processing which concerns on Embodiment 2. The block diagram of the ventilation information display device 10 which concerns on Embodiment 3. The flowchart of the process of the ventilation information display device 10 which concerns on Embodiment 3.

Embodiment 1.
*** Explanation of configuration ***
The configuration of the ventilation system 1 according to the first embodiment will be described with reference to FIG.
The ventilation system 1 includes a ventilation device 2, a number detection device 3, a display 4, and a ventilation information display device 10. The ventilation information display device 10 is connected to the number of people detection device 3 and the display device 4 via a transmission line 5.

The ventilation device 2 is a device that ventilates the target space 6. As a specific example, as shown in FIG. 2, the ventilation device 2 is a ventilation device in which an air supply mechanism and an exhaust mechanism are integrated. In FIG. 2, the ventilation device 2 includes an air supply fan 21, an exhaust fan 22, a total heat exchanger 23, and

air filters

24a and 24b.
When the air supply fan 21 operates, the outside air is taken in and supplied to the target space 6 through the total heat exchanger 23. When the exhaust fan 22 operates, the air is taken in from the target space 6 and exhausted to the outside through the total heat exchanger 23. In the total heat exchanger 23, total heat exchange between the supplied air and the exhausted air is performed.

The number of people detection device 3 is a device that detects the number of people in the room in the target space 6. In the first embodiment, the number of people detection device 3 is an infrared sensor installed with the target space 6 as the detection range. However, the number of people detection device 3 is not limited to the infrared sensor as long as it can detect the number of people in the room. For example, the number of people detection device 3 may be an entry / exit management device that manages entry / exit of the target space 6 by a card reader installed at the entrance / exit of the target space 6.

The display 4 is a device that displays information. In FIG. 1, the display 4 is a remote controller for operating the ventilation device 2. However, the display 4 is not limited to the remote controller as long as it is a device capable of displaying information. For example, it may be a device such as a PC (Personal Computer) installed in the target space 6 or the like and a smartphone or tablet of a person in the target space 6.

The configuration of the ventilation information display device 10 according to the first embodiment will be described with reference to FIG.
The ventilation information display device 10 is a computer.
The ventilation information display device 10 includes hardware for a processor 11, a memory 12, a storage 13, and a communication interface 14. The processor 11 is connected to other hardware via a signal line and controls these other hardware.

The processor 11 is an IC (Integrated Circuit) that performs processing. Specific examples of the processor 11 are a CPU (Central Processing Unit), a DSP (Digital Signal Processor), and a GPU (Graphics Processing Unit).

The memory 12 is a storage device that temporarily stores data. As a specific example, the memory 12 is a SRAM (Static Random Access Memory) or a DRAM (Dynamic Random Access Memory).

The storage 13 is a storage device for storing data. As a specific example, the storage 13 is an HDD (Hard Disk Drive). The storage 13 includes SD (registered trademark, Secure Digital) memory card, CF (Compact Flash, registered trademark), NAND flash, flexible disk, optical disk, compact disc, Blu-ray (registered trademark) disk, DVD (Digital Versaille Disk), and the like. It may be a portable recording medium.

The communication interface 14 is an interface for communicating with an external device. As a specific example, the communication interface 14 is a port of Ethernet (registered trademark), USB (Universal Serial Bus), HDMI (registered trademark, High-Definition Multimedia Interface).

The ventilation information display device 10 includes a required ventilation volume calculation unit 111, an actual ventilation volume calculation unit 112, a ventilation information acquisition unit 113, a deficiency determination unit 114, and a display unit 115 as functional components. The functions of each functional component of the ventilation information display device 10 are realized by software.
The storage 13 stores a program that realizes the functions of each functional component of the ventilation information display device 10. This program is read into the memory 12 by the processor 11 and executed by the processor 11. As a result, the functions of each functional component of the ventilation information display device 10 are realized.

In FIG. 3, only one processor 11 was shown. However, the number of processors 11 may be plural, and the plurality of processors 11 may execute programs that realize each function in cooperation with each other.

*** Explanation of operation ***
The operation of the ventilation information display device 10 according to the first embodiment will be described with reference to FIGS. 4 to 7.
The operation procedure of the ventilation information display device 10 according to the first embodiment corresponds to the ventilation information display method according to the first embodiment. Further, the program that realizes the operation of the ventilation information display device 10 according to the first embodiment corresponds to the ventilation information display program according to the first embodiment.

With reference to FIG. 4, the flow of processing of the ventilation information display device 10 according to the first embodiment will be described.
The process shown in FIG. 4 is repeatedly executed at predetermined intervals.

(Step S11 in FIG. 4: Required ventilation volume calculation process)
The required ventilation volume calculation unit 111 calculates the required ventilation volume, which is the ventilation volume required in the target space 6, and writes it in the memory 12 together with the time when the required ventilation volume is calculated. In other words, the required ventilation volume is the target value of the ventilation volume in the target space 6.
Specifically, the required ventilation volume calculation unit 111 identifies the number of people in the room in the target space 6 by using the number detection device 3. In the first embodiment, since the number of people detection device 3 is an infrared sensor, the required ventilation volume calculation unit 111 identifies the number of people in the room in the target space 6 from the sensor data acquired by the infrared sensor. The required ventilation volume calculation unit 111 calculates the required ventilation volume of the target space 6 by multiplying the specified number of people in the room by the preset required ventilation volume per occupant.
The required ventilation volume per occupant may be varied based on indicators such as the condition of the occupant and the epidemic status of the infectious disease. For example, if the occupant is coughing or sneezing, the required ventilation volume per occupant may be increased. Further, as an infectious disease such as influenza becomes more prevalent, the required ventilation volume per person in the room may be increased.

The calculation method of the required ventilation volume is not limited to this method. For example, the required ventilation volume calculation unit 111 may calculate the required ventilation volume of the target space 6 based on information acquired from devices capable of measuring the degree of contamination of the target space 6, such as a CO2 sensor and a dust sensor.

(Step S12 in FIG. 4: Actual ventilation volume calculation process)
The actual ventilation volume calculation unit 112 calculates the actual ventilation volume, which is the actual ventilation volume of the ventilation device 2 installed in the target space 6, and writes it in the memory 12 together with the time when the actual ventilation volume is calculated.
Specifically, the actual ventilation volume calculation unit 112 calculates the air volume of the ventilation device 2 as the actual ventilation volume based on the rotation speed or the current value of the fan motor of the ventilation device 2. At this time, the actual ventilation volume calculation unit 112 does not calculate the actual ventilation volume by using the performance immediately after installing the ventilation device 2 such as the catalog value as it is, but the

air filters

24a and 24b are clogged with dust over time. It is desirable to calculate the actual ventilation volume in consideration of the decrease in air volume due to deterioration or dirt.
When a plurality of ventilation devices 2 are installed in the target space 6, the actual ventilation volume of the plurality of ventilation devices 2 as a whole is calculated by adding the actual ventilation volumes of the ventilation devices 2.

An example of a method of calculating the actual ventilation volume will be described with reference to FIGS. 5 and 6.
In FIGS. 5 and 6, it is assumed that the ventilation device 2 performs constant air volume control that controls the fan motor so that the ventilation volume becomes constant.
In the constant air volume control, as shown in FIG. 5, the correlation between the torque current that realizes the target air volume and the motor frequency is set. The ventilator 2 controls the air volume to be the target air volume by controlling the motor frequency according to the set correlation. That is, the ventilation device 2 raises the motor frequency to maintain the target air volume when the pressure loss in the air passage becomes large due to clogging of the

air filters

24a and 24b with dust or the like. In FIGS. 5 and 6, in the initial state, the motor frequency is controlled at the point 1, and as the pressure loss increases, the motor frequencies at the

points

2, 3, and 4 are controlled to be higher. However, when the pressure loss becomes so large that the target air volume cannot be maintained even at the upper limit of the motor frequency, the air volume gradually decreases as shown in FIG.
Therefore, the actual ventilation volume calculation unit 112 may treat the target air volume as the actual ventilation volume while the target air volume can be maintained. When the pressure loss becomes so large that the target air volume cannot be maintained, the actual ventilation volume calculation unit 112 gradually reduces the actual ventilation volume according to the pressure loss.

The actual ventilation volume calculation unit 112 may use the air volume measured by the measuring instrument for measuring the air volume of the ventilation device 2 as the actual ventilation volume.

(Step S13 in FIG. 4: Ventilation information acquisition process)
The ventilation information acquisition unit 113 acquires the required ventilation information indicating the required ventilation volume for the past reference period calculated in step S11 and the actual ventilation information indicating the actual ventilation volume for the past reference period calculated in step S12. do.
Specifically, the ventilation information acquisition unit 113 reads the required ventilation volume calculated in the past reference period from the memory 12 as the required ventilation information, and uses the actual ventilation volume calculated in the past reference period as the actual ventilation information from the memory 12. read out.

(Step S14 in FIG. 4: Insufficiency determination process)
The deficiency determination unit 114 determines whether or not the required ventilation volume indicated by the required ventilation information acquired in step S13 is larger than the actual ventilation volume indicated by the actual ventilation information acquired in step S13. When the required ventilation volume is larger than the actual ventilation volume, the deficiency determination unit 114 determines that the ventilation volume is insufficient.

(Step S15 in FIG. 4: Display processing)
The display unit 115 displays on the display 4 the time-dependent change of the required ventilation volume indicated by the required ventilation information acquired in step S13 and the time-dependent change of the actual ventilation volume indicated by the actual ventilation information acquired in step S13. Further, when it is determined in step S14 that the ventilation volume is insufficient, the display unit 115 displays the insufficient information indicating that the ventilation volume is insufficient on the display 4.
As a specific example, as shown in FIG. 7, the display unit 115 displays a graph showing a change over time in the required ventilation volume and a change over time in the actual ventilation volume, and also uses the wording “insufficient ventilation volume” as insufficient information. The current required ventilation volume and the current actual ventilation volume are displayed. Further, the display unit 115 emphasizes and displays a portion of the graph in which the required ventilation volume is larger than the actual ventilation volume by changing the color or the like.

If it is determined that the ventilation volume is insufficient, the display unit 115 may turn on the lamp or notify by voice.

*** Effect of Embodiment 1 ***
As described above, the ventilation information display device 10 according to the first embodiment displays the required ventilation information and the actual ventilation information. By checking the displayed information, the user can easily grasp the required ventilation volume and the actual ventilation volume. As a result, it is possible to identify that the ventilation volume is insufficient, and it is possible to take measures such as opening windows and reducing the number of people in the room.

Further, the ventilation information display device 10 according to the first embodiment displays a graph showing the change with time of the required ventilation volume and the change with time of the actual ventilation volume. By checking this graph, the administrator of the ventilation system 1 can easily determine whether maintenance or replacement of the ventilation device 2 is necessary.

*** Other configurations ***
<Modification 1>
In step S15, the display unit 115 may display the timing of maintenance or replacement of the ventilation device 2.
Specifically, as shown in FIG. 8, the actual ventilation volume gradually decreases due to dust clogging of the

air filters

24a and 24b. As a result, it gradually approaches the reference value of the required ventilation volume such as the average value or the median value of the required ventilation volume. The display unit 115 estimates the time when the actual ventilation volume falls below the reference value of the required ventilation volume from the slope of the actual ventilation volume and the like. Then, the display unit 115 displays the estimated time point as the timing of maintenance or replacement by purchase.
As a result, the administrator of the ventilation system 1 can grasp the timing when the maintenance or replacement of the ventilation device 2 is required by checking this graph.

In step S15, the display unit 115 may indicate that maintenance or replacement of the ventilation device 2 is necessary at an early stage when the state of insufficient ventilation volume continues for a certain period of time or longer. ..

<Modification 2>
In step S12, the actual ventilation volume calculation unit 112 may calculate the assumed ventilation volume, which is the ventilation volume of the ventilation device 2 assumed when the ventilation device is maintained, in addition to the actual ventilation volume, and write it to the memory 12. As a specific example, the actual ventilation volume calculation unit 112 calculates the assumed ventilation volume when the dust clogging is cleared by cleaning or replacing the

air filters

24a and 24b.
In this case, in step S13, the ventilation information acquisition unit 113 acquires the assumed ventilation information indicating the current assumed ventilation volume in addition to the required ventilation information and the actual ventilation information. In step S15, the display unit 115 displays the assumed ventilation volume indicated by the assumed ventilation information in addition to the time-dependent change of the required ventilation volume and the time-dependent change of the actual ventilation volume.
If the assumed ventilation volume is equal to or higher than the required ventilation volume, the insufficient ventilation volume can be solved by performing maintenance on the ventilation device 2. Therefore, by checking the displayed information by the administrator of the ventilation system 1, it becomes possible to easily determine whether or not the insufficient ventilation volume can be solved by performing maintenance on the ventilation device 2.

In step S14, the deficiency determination unit 114 may determine whether or not the assumed ventilation volume is equal to or greater than the required ventilation volume. Then, in step S15, when the display unit 115 is determined to have insufficient ventilation volume and the assumed ventilation volume is equal to or greater than the required ventilation volume, the display unit 115 displays a recommendation for maintenance of the ventilation device 2 and determines that the ventilation volume is insufficient. Moreover, if the assumed ventilation volume is less than the required ventilation volume, a display recommending replacement of the ventilation device 2 may be performed.

<Modification 3>
In the first embodiment, the required ventilation volume calculation unit 111 calculated the required ventilation volume, and the actual ventilation volume calculation unit 112 calculated the actual ventilation volume. However, the required ventilation volume and the actual ventilation volume may be calculated by an external device. Then, the ventilation information acquisition unit 113 may acquire the required ventilation volume and the actual ventilation volume calculated by the external device.

<Modification example 4>
In the first embodiment, each functional component is realized by software. However, as a modification 4, each functional component may be realized by hardware. The difference between the modified example 4 and the first embodiment will be described.

When each functional component is realized by hardware, the ventilation information display device 10 includes an electronic circuit instead of the processor 11, the memory 12, and the storage 13. The electronic circuit is a dedicated circuit that realizes the functions of each functional component, the memory 12, and the storage 13.

As the electronic circuit, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, a logic IC, a GA (Gate Array), an ASIC (Application Specific Integrated Circuit), and an FPGA (Field-Programmable Gate Array) are assumed. Will be done.
Each functional component may be realized by one electronic circuit, or each functional component may be distributed and realized by a plurality of electronic circuits.

<Modification 5>
As a modification 5, some functional components may be realized by hardware, and other functional components may be realized by software.

The processor 11, the memory 12, the storage 13, and the electronic circuit are called processing circuits. That is, the function of each functional component is realized by the processing circuit.

Further, the "part" in the above description may be read as "circuit", "process", "procedure", "processing" or "processing circuit".

Embodiment 2.
The second embodiment is different from the first embodiment in that the information is output to the terminal or the like of the administrator of the ventilation system 1 in addition to displaying the information on the display 4. In the second embodiment, these different points will be described, and the same points will be omitted.

*** Explanation of configuration ***
The configuration of the ventilation information display device 10 according to the second embodiment will be described with reference to FIG. 9.
The ventilation information display device 10 is different from the ventilation information display device 10 shown in FIG. 3 in that it includes a recording unit 116 and an output unit 117 as functional components. The recording unit 116 and the output unit 117 are realized by software or hardware like other functional components.

*** Explanation of operation ***
The operation of the ventilation information display device 10 according to the second embodiment will be described with reference to FIGS. 10 and 11.
The operation procedure of the ventilation information display device 10 according to the second embodiment corresponds to the ventilation information display method according to the second embodiment. Further, the program that realizes the operation of the ventilation information display device 10 according to the second embodiment corresponds to the ventilation information display program according to the second embodiment.
The process of the ventilation information display device 10 according to the second embodiment includes a recording process and an output process.

The recording process according to the second embodiment will be described with reference to FIG.
When it is determined in step S14 of FIG. 4 that the ventilation volume is insufficient, the recording process is executed.

(Step S21 in FIG. 10: Ventilation determination process)
The recording unit 116 determines whether or not the ventilation measures have been implemented.
Specifically, the recording unit 116 determines whether or not the number of people in the room in the target space 6 has decreased. That is, the recording unit 116 identifies the number of people in the room in the target space 6 by using the number of people detection device 3, and determines whether or not the number of people in the room is less than the number of people in the room specified in step S11.
Further, the recording unit 116 determines whether or not the fitting that divides the target space 6 has been opened. The fitting that divides the target space 6 is a window or a door provided in the target space 6. For example, the recording unit 116 uses a sensor that detects the opening and closing of the fitting, and determines whether or not it is detected that the fitting has been opened.
The recording unit 116 takes ventilation measures at least in either a case where it is determined that the number of people in the room in the target space 6 has decreased or a case where it is determined that the fittings separating the target space 6 have been opened. It is determined that it has been done. When it is determined that the ventilation measures have been executed, the recording unit 116 advances the process to step S22. On the other hand, if it is not determined that the ventilation measures have been executed, the recording unit 116 proceeds to the process in step S23.

(Step S22 in FIG. 10: Countermeasure record processing)
The recording unit 116 writes to the memory 12 that the ventilation measures have been executed.
Specifically, when it is determined in step S21 that the number of people in the room has decreased, the recording unit 116 writes in the memory 12 that the measures for reducing the number of people in the room have been taken. Further, when it is determined in step S21 that the fittings have been opened, the recording unit 116 writes to the memory 12 that the measures for manual ventilation have been taken. When it was determined in step S21 that the number of people in the room was reduced and it was determined that the fittings were opened, the recording unit 116 took measures to reduce the number of people in the room and manually ventilate. Is written to the memory 12.

(Step S23 in FIG. 10: Elapsed time determination process)
The recording unit 116 determines whether or not the designated time has elapsed since it was determined in step S14 that the ventilation volume is insufficient. The specified time is a preset time.
The recording unit 116 ends the process when the designated time has elapsed since it was determined that the ventilation volume is insufficient. On the other hand, if the designated time has not elapsed since it was determined that the ventilation volume is insufficient, the recording unit 116 returns the process to step S21.

The output process according to the second embodiment will be described with reference to FIG.
The output process is executed at the timing specified by the administrator of the ventilation system 1 or at a periodic timing.

(Step S31 in FIG. 11: Actual output processing)
The output unit 117 executes the ventilation measures written in the memory 12 in step S22 together with the required ventilation volume indicated by the required ventilation information acquired in step S13 and the actual ventilation volume indicated by the actual ventilation information acquired in step S13. The actual information showing the history is output to the terminal or the like of the administrator of the ventilation system 1.
The output unit 117 may output the required ventilation volume indicated by the required ventilation information and the actual ventilation volume indicated by the actual ventilation information as a graph as shown in FIG. 7. Further, as described in the modified example 2, the output unit 117 may show the timing of maintenance or replacement by purchase in a graph or the like.

*** Effect of Embodiment 2 ***
As described above, the ventilation information display device 10 according to the second embodiment outputs the required ventilation volume and the actual ventilation volume to the terminal or the like of the administrator of the ventilation system 1. As a result, the manager can easily grasp the excess / deficiency of the ventilation volume.

Further, the ventilation information display device 10 according to the second embodiment outputs the actual information indicating the history of the execution of the ventilation measures to the terminal or the like of the administrator of the ventilation system 1 when the ventilation volume is insufficient. As a result, the manager can easily grasp whether or not appropriate measures have been taken in the case of insufficient ventilation. As a result, the manager can take measures such as calling attention to implement ventilation measures.

*** Other configurations ***
<Modification 6>
In the second embodiment, it is determined in step S21 whether or not the number of people in the room in the target space 6 has decreased. However, it may not be possible to solve the lack of ventilation just by reducing the number of people in the room.
Therefore, in step S21, when the number of people in the room decreases, the recording unit 116 causes the required ventilation volume calculation unit 111 to calculate the required ventilation volume, and causes the actual ventilation volume calculation unit 112 to calculate the actual ventilation volume to obtain the required ventilation. It may be determined whether or not the volume is less than or equal to the actual ventilation volume. In this case, the recording unit 116 determines that the ventilation measures have been executed when the number of people in the room has decreased and the required ventilation volume has become less than the actual ventilation volume, not when the number of people in the room has decreased. ..

Embodiment 3.
The third embodiment is different from the first and second embodiments in that the number of people who can enter the room is specified based on the required ventilation volume per person and the actual ventilation volume. In the third embodiment, this different point will be described, and the description of the same point will be omitted.
In the third embodiment, a case where a function is added to the first embodiment will be described. However, it is also possible to add a function to the second embodiment. Further, apart from the first and second embodiments, it is also possible to realize only the functions of the third embodiment.

*** Explanation of configuration ***
The configuration of the ventilation information display device 10 according to the third embodiment will be described with reference to FIG. 12.
The ventilation information display device 10 is different from the ventilation information display device 10 shown in FIG. 3 in that it includes a number calculation unit 118 as a functional component. Like any other functional component, it is implemented by software or hardware.

*** Explanation of operation ***
The operation of the ventilation information display device 10 according to the third embodiment will be described with reference to FIG.
The operation procedure of the ventilation information display device 10 according to the third embodiment corresponds to the ventilation information display method according to the third embodiment. Further, the program that realizes the operation of the ventilation information display device 10 according to the third embodiment corresponds to the ventilation information display program according to the third embodiment.

The process shown in FIG. 13 is executed at the timing instructed by the user to execute the process or at a periodic timing.
In the third embodiment, it is assumed that the number of people in the target space 6 is 0.

(Step S41 in FIG. 13: Actual ventilation volume calculation process)
The actual ventilation volume calculation unit 112 calculates the actual ventilation volume, which is the actual ventilation volume of the ventilation device 2 installed in the target space 6, and writes the actual ventilation volume in the memory 12. The specific calculation method of the actual ventilation volume is the same as in step S12 of FIG.

(Step S42 in FIG. 13: Number of people calculation process)
The number of people calculation unit 118 calculates the number of people who can enter the target space 6 based on the required ventilation volume per occupant and the actual ventilation volume calculated in step S41.
Specifically, the number calculation unit 118 divides the actual ventilation volume calculated in step S41 by the required ventilation volume per occupant, and rounds down the fraction to obtain the value obtained in the target space 6. Calculated as the number of people who can enter the room.

(Step S43 in FIG. 13: Display processing)
The display unit 115 displays the number of people who can enter the room calculated in step S42 on the display unit 4.

*** Effect of Embodiment 3 ***
As described above, the ventilation information display device 10 according to the third embodiment displays the number of people who can enter the target space 6. As a result, the user of the target space 6 can know in advance the number of people who can enter the target space 6.
For example, when the target space 6 is a conference room, the user can know the number of people who can enter the conference room at the time of making a reservation for the conference room. Therefore, it is possible to adjust the number of participants in the conference according to the number of people who can enter the room, or to change the conference room to be used to another conference room. In the case of this example, it is desirable that the display 4 is not a remote controller of the ventilation device 2 but a terminal such as a user's PC, smartphone or tablet.

In addition, it is possible to specify an appropriate number of people according to the situation by using the required ventilation volume per person in the room according to the index such as the epidemic state of the infectious disease.

*** Other configurations ***
<Modification 7>
In the third embodiment, it is assumed that the number of people in the target space 6 is 0. However, the number of people in the target space 6 may be one or more. In this case, in step S42, the number calculation unit 118 divides the actual ventilation volume by the required ventilation volume per occupant and rounds down the fraction to reduce the number of occupants. , The number of people who can enter the target space 6 may be calculated.
For example, when the target space 6 is a shared office or the like, a usage method such as displaying how many more people can enter the display 4 installed at the entrance of the target space 6 can be considered.

The embodiments and modifications of the present disclosure have been described above. Some of these embodiments and modifications may be combined and carried out. In addition, any one or several may be partially carried out. The present disclosure is not limited to the above embodiments and modifications, and various modifications can be made as necessary.

1 Ventilation system, 2 Ventilation device, 3 Number of people detection device, 4 Display, 5 Transmission line, 6 Target space, 10 Ventilation information display device, 11 Processor, 12 Memory, 13 Storage, 14 Communication interface, 111 Required ventilation volume calculation unit , 112 actual ventilation volume calculation unit, 113 ventilation information acquisition unit, 114 shortage judgment unit, 115 display unit, 116 recording unit, 117 output unit, 118 number of people calculation unit, 21 air supply fan, 22 exhaust fan, 23 total heat exchanger , 24a air filter, 24b air filter.

Claims

Ventilation information acquisition unit that acquires the required ventilation information indicating the required ventilation volume, which is the target value of the ventilation volume in the target space, and the actual ventilation information indicating the actual ventilation volume, which is the ventilation volume of the ventilation device installed in the target space. When,
A ventilation information display device including a display unit for displaying the required ventilation volume indicated by the required ventilation information acquired by the ventilation information acquisition unit and the actual ventilation volume indicated by the actual ventilation information.
The ventilation information display device according to claim 1, wherein the display unit displays insufficient information indicating that the ventilation volume is insufficient when the required ventilation volume is larger than the actual ventilation volume.
The required ventilation information indicates the required ventilation volume for the past reference period.
The actual ventilation information indicates the actual ventilation volume for the past reference period.
The ventilation information display device according to claim 1 or 2, wherein the display unit displays the required ventilation volume and the actual ventilation volume for the past reference period.
The ventilation information acquisition unit acquires the assumed ventilation information indicating the assumed ventilation volume which is the ventilation volume of the ventilation device assumed when the ventilation device is maintained.
The ventilation information display device according to any one of claims 1 to 3, wherein the display unit displays the assumed ventilation volume indicated by the assumed ventilation information.
The ventilation information display device further
Ventilation measures are implemented at least in either the case where the number of people in the target space decreases after displaying the deficiency information or the case where the fittings separating the target space are opened after displaying the deficiency information. A countermeasure recording unit that records what was done in the actual information,
The ventilation information display device according to claim 2, further comprising a performance output unit that outputs the performance information recorded by the countermeasure recording unit.
The required ventilation information indicates the required ventilation volume for the past reference period.
The actual ventilation information indicates the actual ventilation volume for the past reference period.
The ventilation information display device according to claim 5, wherein the actual result output unit outputs the necessary ventilation information, the actual ventilation information, and the actual result information.
The fifth or sixth aspect of the present invention, wherein the actual output unit outputs timing information indicating a recommended timing for maintenance or replacement of the ventilation device specified from the change with time of the required ventilation volume and the change with time of the actual ventilation volume. Ventilation information display device.
The ventilation according to any one of claims 1 to 7, wherein the display unit displays the number of people who can enter the target space specified from the required ventilation volume per person and the actual ventilation volume. Information display device.