JP2016061499A - Ventilation controller, ventilation control system and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation control device capable of prolonging a ventilation time and suppressing an inflow rate of an atmospheric pollutant.SOLUTION: A ventilation control device 1 includes a temperature information acquisition unit 11, an air quality information acquisition unit 12, a control unit 13, a first calculation unit 14, a second calculation unit 15, and a comparison unit 16. The temperature information acquisition unit 11 acquires information of an indoor temperature and an outdoor temperature. The air quality information acquisition unit 12 acquires information of concentration of an atmospheric pollutant. The first calculation unit 14 calculates an inflow rate (first inflow rate) of air per unit time. The second calculation unit 15 calculates an inflow rate (second inflow rate) of the atmospheric pollutant per unit time. The comparison unit 16 compares the second inflow rate with a threshold. The control unit 13, when the second inflow rate is less than the threshold, continues the ventilation state of a ventilation member 2, and when the second inflow rate is the threshold or more, makes the ventilation member 2 into a ventilation stop state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation control device, a ventilation control system, and a program for controlling indoor ventilation.

  Conventionally, a ventilation system for ventilating an indoor space has been provided (see, for example, Patent Document 1). In conventional ventilation systems, local air quality information is obtained via the Internet to determine whether it is better to ventilate or not to ventilate, and ventilate if there are many air pollutants. Absent.

JP 2005-3321 A

  However, even if there are many air pollutants, if the wind is weak, the amount of air pollutants flowing into the room will be small. In such a case, although ventilation is possible, ventilation is not performed in the conventional ventilation system, and thus the ventilation time may be unnecessarily shortened.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a ventilation control device, a ventilation control system, and a program capable of achieving both suppression of the inflow amount of air pollutants and securing of ventilation time. There is.

  The ventilation control device of the present invention includes an indoor temperature information and a temperature information acquisition unit that acquires outdoor temperature information, an air quality information acquisition unit that acquires outdoor air pollutant concentration information, and indoor and outdoor A control unit that controls a ventilation member that switches between a ventilation state and a ventilation stop state between the two, and based on the time change of the indoor temperature and the outdoor temperature during ventilation when the ventilation member is in the ventilation state, Based on the first calculation unit for obtaining a first inflow amount, which is an inflow amount of air per unit time into the room during ventilation, and the concentration and the first inflow amount, the unit into the indoor during the ventilation. A second calculation unit that obtains a second inflow amount that is an inflow amount of the air pollutant per hour; and a comparison unit that compares the second inflow amount with a threshold value. The first If inflow is smaller than the threshold value, it continues the ventilation state of the ventilation member, when the second flow rate is greater than or equal to said threshold value, characterized in that the vent member in the ventilation stopped.

  The ventilation control system of the present invention measures the ventilation control device, the first temperature measurement unit that measures the indoor temperature, the second temperature measurement unit that measures the outdoor temperature, and the concentration of the air pollutant. An air quality sensor and the ventilation member are provided.

  The program according to the present invention causes a computer to function as the ventilation control device.

  The ventilation control device of the present invention includes a humidity information acquisition unit that acquires indoor humidity information and outdoor humidity information, an air quality information acquisition unit that acquires outdoor air pollutant concentration information, and indoors and outdoors. A control unit that controls a ventilation member that switches between a ventilation state and a ventilation stop state between the two, and based on the time change of the indoor humidity and the outdoor humidity during ventilation when the ventilation member is in the ventilation state, Based on the first calculation unit for obtaining a first inflow amount, which is an inflow amount of air per unit time into the room during ventilation, and the concentration and the first inflow amount, the unit into the indoor during the ventilation. A second calculation unit that obtains a second inflow amount that is an inflow amount of the air pollutant per hour; and a comparison unit that compares the second inflow amount with a threshold value. The first If inflow is smaller than the threshold value, it continues the ventilation state of the ventilation member, when the second flow rate is greater than or equal to said threshold value, characterized in that the vent member in the ventilation stopped.

  The ventilation control system of this invention measures the said ventilation control apparatus, the 1st humidity measurement part which measures the said indoor humidity, the 2nd humidity measurement part which measures the said outdoor humidity, and the said density | concentration of the said air pollutant. An air quality sensor and the ventilation member are provided.

  The program according to the present invention causes a computer to function as the ventilation control device.

  In this invention, there exists an effect that suppression of the inflow of an air pollutant and ensuring of ventilation time can be made compatible.

1 is a schematic configuration diagram of Embodiment 1. FIG. 2 is a block configuration diagram of a HEMS controller in Embodiment 1. FIG. FIG. 3 is a schematic configuration diagram of a second embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
A schematic configuration of the present embodiment is shown in FIG. This embodiment is a ventilation control device 1 that is provided in a detached house 5 and controls the ventilation member 2 such as the window 21, the ventilation opening 22, and the ventilation fan 23 to control the indoor environment to be comfortable. In addition, although the following description demonstrates as an example the case where the ventilation control apparatus 1 is provided in the detached house 5, the installation place of the ventilation control apparatus 1 is not limited to the detached house 5, For example, an apartment house, a store, It may be provided in an office or factory.

  The ventilation control device 1 of the present embodiment includes a computer that realizes the following functions by executing a program as a main hardware configuration. This type of computer may be selected from portable terminal devices such as smartphones and tablet terminals in addition to stationary terminal devices such as a computer dedicated to ventilation control and general-purpose personal computers. In addition, the computer may have a configuration in which a processor and a memory are integrally provided, such as a microcomputer. Further, the program may be provided through a telecommunication line such as the Internet in addition to being written in advance in a ROM (Read Only Memory). The program may be provided by a computer-readable recording medium.

  Below, the structure of the ventilation control apparatus 1 of this embodiment is demonstrated using FIG.

  The ventilation control device 1 of the present embodiment includes a temperature information acquisition unit 11, an air quality information acquisition unit 12, a control unit 13, a first calculation unit 14, a second calculation unit 15, and a comparison unit 16. In the present embodiment, the ventilation control system 10 includes the ventilation control device 1, the first temperature measurement unit 31, the second temperature measurement unit 32, the air quality sensor 4, and the ventilation member 2.

  The temperature information acquisition unit 11 is configured to be able to communicate with a first temperature measurement unit 31 and a second temperature measurement unit 32 that are configured with a temperature sensor that measures temperature using, for example, a thermistor. Then, the temperature information acquisition unit 11 acquires the temperature measurement result from each of the first temperature measurement unit 31 and the second temperature measurement unit 32.

  The 1st temperature measurement part 31 is provided in the indoor 51 (for example, living room), and measures indoor temperature. Then, the first temperature measurement unit 31 transmits the temperature measurement result (indoor temperature) to the temperature information acquisition unit 11 at predetermined time intervals.

  The 2nd temperature measurement part 32 is provided in the outdoors 52, and measures outdoor temperature. Then, the second temperature measurement unit 32 transmits the temperature measurement result (outdoor temperature) to the temperature information acquisition unit 11 at predetermined time intervals.

  The air quality information acquisition unit 12 is configured to be able to communicate with the air quality sensor 4 that measures the concentration of air pollutants. The air quality information acquisition unit 12 acquires the measurement result of the concentration of air pollutants from the air quality sensor 4.

  The air quality sensor 4 is provided in the outdoors 52 and measures the concentration of air pollutants in the outdoors 52. Examples of air pollutants include sulfur dioxide (SO2), carbon monoxide (CO), suspended particulate matter (SPM), nitrogen dioxide (NO2), photochemical oxidant (OX), and fine particulate matter (PM2.5). Can be given. The air quality sensor 4 may be configured to measure the concentration of a plurality of types of air pollutants. Note that the air pollutant to be measured by the air quality sensor 4 may be a substance other than the above, for example, pollen may be the measurement target. And the air quality sensor 4 transmits the measurement result of the density | concentration of an air pollutant to the air quality information acquisition part 12 by a predetermined time interval.

  The control unit 13 controls the ventilation member 2 that switches between the indoor 51 and the outdoor 52 between the ventilation state and the ventilation stop state.

  The ventilation member 2 includes a window 21, an openable / closable ventilation port 22, a ventilation fan 23, and the like. The ventilation member 2 is controlled by the control unit 13 so that a ventilation state and a ventilation stop state are established between the indoor 51 and the outdoor 52. Switch to. The window 21 is provided with a drive unit 211 that opens and closes the window 21, and the drive unit 211 opens and closes the window 21 based on a control signal from the control unit 13. The ventilation port 22 is provided with a drive unit 221 that opens and closes the ventilation port 22, and the drive unit 221 opens and closes the ventilation port 22 based on a control signal from the control unit 13. And the window 21 and the ventilation port 22 will be in a ventilation state when it will be in an open state, and will be in a ventilation stop state if it is in a closed state. Moreover, the ventilation fan 23 will be in the ventilation | gas_flowing state by operating based on the control signal from the control part 13, and will be in the ventilation | gas_flowing stop state by stopping. In the present embodiment, the window 21, the ventilation opening 22, and the ventilation fan 23 are provided as the ventilation member 2, but any configuration including at least one of them may be used. Moreover, when not distinguishing the window 21, the ventilation port 22, and the ventilation fan 23, it is called the ventilation member 2. FIG.

  For example, when the indoor temperature is higher than the outdoor temperature in the summer, the control unit 13 ventilates the indoor 51 by setting the ventilation member 2 to the ventilation state, and controls the indoor environment to be comfortable.

Based on the change in the amount of heat of the air in the indoor 51, the first calculator 14 calculates the amount of air inflow per unit time into the indoor 51 when the ventilation member 2 is in the ventilation state (hereinafter referred to as the first inflow V1). [M ³ ]). Below, the calculation method of the 1st inflow amount V1 is demonstrated.

Here, a case where the start time of the unit time is time t1 and the end time of the unit time is time t2 will be described as an example. When the heat quantity of the air in the indoor 51 at time t1 is Q1 [J] and the heat quantity of the air in the indoor 51 at time t2 is Q2 [J], the air that has flowed into the indoor 51 during the unit time (time t1 to time t2). The amount of heat Q3 [J] is represented by the following formula (1).
Q3 = Q2-Q1 (1)
Moreover, each calorie | heat amount Q1, Q2, Q3 is represented by following formula (2)-(4). The density of air is ρ1 [g / m ³ ], the specific heat of air is c1 [J / g * K], the volume of the indoor 51 (room) is V2 [m ³ ], and the indoor temperature at time t1 is T1 [ K], the indoor temperature at time t2 is T2 [K], and the outdoor temperature is T3 [K].
Q1 = ρ1 × c1 × V2 × T1 (2)
Q2 = ρ1 × c1 × V2 × T2 (3)
Q3 = ρ1 × c1 × V1 × T3 (4)
From the above formulas (1) to (4), the first inflow amount V1 is represented by the following formula (5).
V1 = V2 (T2-T1) / T3 (5)
The volume V2 of the indoor 51 (indoor) is a predetermined constant. Therefore, the first calculator 14 calculates the first inflow that is the inflow amount of air per unit time based on the temporal change of the indoor temperature (indoor temperature T2−indoor temperature T1) and the outdoor temperature T3 during ventilation. The quantity V1 can be determined (see equation (5)). The unit time may be a time sufficient for the indoor temperature to change due to the inflowing air, and can be set as appropriate based on the volume V2 of the indoor 51, for example, 5 minutes, 10 minutes, etc. Is done.

  The second calculation unit 15 obtains an inflow amount of air pollutants per unit time into the indoor 51 during ventilation (hereinafter referred to as a second inflow amount M1). Hereinafter, a method for calculating the second inflow amount will be described.

Here, the concentration of the air pollutant measured by the air quality sensor 4 is C1. The unit of the air pollutant concentration C1 is [ppm] for volume ratio and weight ratio, [mg / m ³ ], [μg / m ³ ] for weight concentration, etc. It depends on. The second calculation unit 15 uses the first inflow amount V1 obtained by the first calculation unit 14, the concentration C1 of the air pollutant, and the air density ρ1, and the second inflow amount M1 from the following equation (6). Can be requested.
M1 = V1 × C1 × ρ1 (6)
When the air quality sensor 4 measures the concentration C1 of a plurality of types of air pollutants, the second calculation unit 15 obtains the second inflow amount M1 for each type of air pollutants.

  The comparison unit 16 compares the inflow amount of air pollutant per unit time (second inflow amount M1) obtained by the second calculation unit 15 with a predetermined threshold value. In addition, the threshold value compared with the 2nd inflow amount M1 is set for every kind of air pollutant based on the environmental standard etc. which were defined by the environmental basic law etc., for example. The comparison unit 16 compares the amount of air pollutant inflow (second inflow M1) with a threshold corresponding to the type of air pollutant.

  Then, the control unit 13 continues or stops ventilation based on the comparison result of the comparison unit 16 during ventilation. When the second inflow amount M1 is less than the threshold value, the control unit 13 continues the ventilation state of the ventilation member 2, that is, continues ventilation of the indoor 51. In addition, when the second inflow amount M1 is equal to or greater than the threshold value, the control unit 13 stops the ventilation member 2 in the ventilation stop state, that is, the ventilation of the indoor 51. In the configuration in which the second inflow amount M1 of a plurality of types of air pollutants is obtained, the control unit 13 stops ventilation when any one of the second inflow amounts M1 of air pollutants is equal to or greater than a threshold value. .

  As described above, the ventilation control device 1 according to the present embodiment is based on the inflow amount (second inflow amount) of air pollutants per unit time obtained using the indoor temperature, the outdoor temperature, and the concentration of air pollutants. To determine whether or not to continue ventilation. And the ventilation control apparatus 1 continues ventilation only when the 2nd inflow amount is less than a threshold value, and stops ventilation, when the 2nd inflow amount is more than a threshold value. Therefore, in this embodiment, even if the concentration of air pollutants is relatively high, ventilation of the indoor 51 is continued if the wind is weak and the amount of air flowing into the indoor 51 is small. On the other hand, even if the concentration of air pollutants is relatively low, if the wind is strong and the amount of air flowing into the indoor 51 is large, the ventilation of the indoor 51 is stopped and a large amount of air pollutants flows into the indoor 51. Is prevented. In other words, the ventilation control device 1 of the present embodiment determines whether ventilation can be continued based on the inflow amount of air pollutant (second inflow amount) rather than the measurement result of the air quality sensor 4. The amount of inflow can be suppressed and the ventilation time can be made as long as possible. Therefore, in this embodiment, it is possible to achieve both suppression of the amount of air pollutants flowing into the indoor 51 and securing of ventilation time.

  The above-described ventilation control function may be provided by a device different from the dedicated device (ventilation control device 1). As an example of a device that is different from the dedicated device (ventilation control device 1), for example, a device installed in the home for crime prevention and disaster prevention has the above-described ventilation control function in addition to the original crime prevention and disaster prevention functions. May be implemented. Examples of such devices include intercoms and the like, and any of a fixed position type fixed to a living room wall, a portable radio type, and a portable type may be used. Further, the above-described ventilation control function may be implemented as an add-on in a wireless communication relay device (for example, a wireless router, a wireless gateway, or the like) represented by WiFi (registered trademark) that supports home wireless communication. For example, as shown in FIG. 2, the HEMS controller 100 used for HEMS (Home Energy Management System) may be provided. In addition to the power information acquisition unit 17 and the air conditioning control unit 18, the HEMS controller 100 includes the temperature information acquisition unit 11, the air quality information acquisition unit 12, the control unit 13, the first calculation unit 14, and the second calculation unit 15 described above. And a comparison unit 16. The power information acquisition unit 17 is configured to be communicable with, for example, a power measurement unit 101 that measures power consumption for each branch circuit. For example, the power information acquisition unit 17 acquires power consumption of an electrical load as information about power and displays the information on the monitor 102. Moreover, the air-conditioning control part 18 adjusts the thermal environment of the indoor 51 by controlling the air-conditioning apparatus 103 comprised, for example with an air conditioner.

  As described above, the ventilation control device 1 of the present embodiment includes the temperature information acquisition unit 11, the air quality information acquisition unit 12, the control unit 13, the first calculation unit 14, the second calculation unit 15, and the comparison unit 16. .

  The temperature information acquisition unit 11 acquires indoor temperature information and outdoor temperature information. The air quality information acquisition unit 12 acquires information on the concentration of air pollutants in the outdoors 52. The control unit 13 controls the ventilation member 2 that switches between the ventilation state and the ventilation stop state between the indoor 51 and the outdoor 52. The first calculation unit 14 is the first inflow amount of air per unit time into the indoor 51 during ventilation based on the time change of the indoor temperature and the outdoor temperature during ventilation when the ventilation member 2 is in the ventilation state. 1 Find the inflow. The second calculation unit 15 obtains a second inflow amount that is an inflow amount of the air pollutant per unit time into the indoor 51 during ventilation based on the concentration of the air pollutant and the first inflow amount. The comparison unit 16 compares the second inflow amount with a threshold value.

  Then, the control unit 13 continues the ventilation state of the ventilation member 2 when the second inflow amount is less than the threshold value during ventilation, and keeps the ventilation member 2 in the ventilation stop state when the second inflow amount is equal to or more than the threshold value. To.

  Moreover, the ventilation control system 10 of this embodiment is the said ventilation control apparatus 1, the 1st temperature measurement part 31 which measures indoor temperature, the 2nd temperature measurement part 32 which measures outdoor temperature, and the density | concentration of an air pollutant. The air quality sensor 4 and the ventilation member 2 are measured.

  Moreover, the program of this embodiment makes a computer function as the said ventilation control apparatus 1. FIG.

As described above, the ventilation control device 1, the ventilation control system 10, and the program according to the present embodiment determine whether or not ventilation can be continued based on the inflow amount (second inflow amount) of air pollutants. It is possible to achieve both suppression of the inflow of pollutants and securing of ventilation time.
(Embodiment 2)
A schematic configuration of the present embodiment is shown in FIG. The ventilation control device 1 according to the present embodiment differs from the ventilation control device 1 according to the first embodiment in the method of obtaining the inflow amount of air per unit time (first inflow amount V1). In addition, the same code | symbol is attached | subjected to the structure similar to the ventilation control apparatus 1 of Embodiment 1, and description is abbreviate | omitted.

  The ventilation control device 1 of the present embodiment includes a temperature information acquisition unit 11, an air quality information acquisition unit 12, a control unit 13, a first calculation unit 14A, a second calculation unit 15, a comparison unit 16, and a humidity information acquisition unit 19. Prepare. In the present embodiment, the ventilation control device 1, the first temperature measurement unit 31, the second temperature measurement unit 32, the first humidity measurement unit 61, the second humidity measurement unit 62, the air quality sensor 4, and the ventilation member 2 are used. The ventilation control system 10 is configured. In addition, since the temperature information acquisition part 11, the air quality information acquisition part 12, the control part 13, the 2nd calculation part 15, and the comparison part 16 are the same as that of Embodiment 1, description is abbreviate | omitted.

  The humidity information acquisition unit 19 is configured to be able to communicate with a first humidity measurement unit 61 and a second humidity measurement unit 62 configured by humidity sensors. Then, the humidity information acquisition unit 19 acquires the humidity measurement results from the first humidity measurement unit 61 and the second humidity measurement unit 62, respectively.

  The 1st humidity measurement part 61 is provided in the indoor 51 (for example, indoors), and measures the relative humidity (henceforth indoor humidity) of the indoor 51. FIG. Then, the first humidity measurement unit 61 transmits the humidity measurement result (indoor humidity) to the humidity information acquisition unit 19 at a predetermined time interval.

  The second humidity measuring unit 62 is provided in the outdoor 52 and measures the relative humidity of the outdoor 52 (hereinafter referred to as outdoor humidity). Then, the second humidity measurement unit 62 transmits the humidity measurement result (outdoor humidity) to the humidity information acquisition unit 19 at a predetermined time interval.

Based on the change in the amount of water vapor in the air in the indoor 51, the first calculating unit 14A obtains the amount of air flowing into the indoor 51 per unit time (first inflow V1 [m ³ ]) during ventilation. Below, the calculation method of the 1st inflow amount V1 is demonstrated.

Here, a case where the start time of the unit time is time t1 and the end time of the unit time is time t2 will be described as an example. When the water vapor amount in the air in the indoor 51 at time t1 is m1 [g] and the water vapor amount in the air in the indoor 51 at time t2 is m2 [g], the indoor 51 in the unit time (time t1 to time t2). The amount of water vapor in the air flowing into the air m3 [g] is represented by the following formula (7).
m3 = m2-m1 (7)
Moreover, each water vapor amount m1, m2, m3 is represented by following formula (8)-(10). The indoor humidity at time t1 is RH1 [%], the indoor temperature is T1 [K], and the saturated water vapor amount corresponding to the indoor temperature T1 is m10 [g / m ³ ]. Further, the indoor humidity at time t2 is RH2 [%], the indoor temperature is T2 [K], and the saturated water vapor amount corresponding to the indoor temperature T2 is m20 [g / m ³ ]. The outdoor humidity is RH3 [%], the outdoor temperature is T3 [K], and the saturated water vapor amount corresponding to the outdoor temperature T3 is m30 [g / m ³ ]. Further, the volume of the indoor 51 (room) is V2 [m ³ ]. Note that the saturated water vapor amount data corresponding to the temperature value is stored in advance in a storage unit (not shown).
m1 = m10 × RH1 × V2 (8)
m2 = m20 × RH2 × V2 (9)
m3 = m30 × RH3 × V1 (10)
From the above formulas (7) to (10), the first inflow amount V1 is represented by the following formula (11).
V1 = V2 (m20 × RH2-m10 × RH1) / m30 × RH3 (11)
The volume V2 of the indoor 51 (indoor) is a predetermined constant. Therefore, the first calculation unit 14A performs the first inflow that is the inflow amount of air per unit time based on the temporal change in indoor humidity (indoor humidity RH2-indoor humidity RH1) and the outdoor humidity RH3 during ventilation. The quantity V1 can be determined (see equation (11)). Furthermore, in the present embodiment, the saturated water vapor amounts m10, m20, m30 are used as variables with respect to the temperature (indoor temperature, outdoor temperature), so that the first inflow amount V1 can be obtained more accurately. The unit time may be a time sufficient for the indoor humidity to change, and can be set as appropriate based on the volume V2 of the indoor 51, for example, 5 minutes, 10 minutes, or the like.

  Then, as in the first embodiment, the second calculation unit 15 obtains the amount of air pollutants flowing into the indoor 51 per unit time (second inflow amount M1) (see Expression (6)), and the comparison unit 16 However, the second inflow amount M1 is compared with the threshold value. The controller 13 continues the ventilation state of the ventilation member 2 when the second inflow amount M1 is less than the threshold value, and sets the ventilation member 2 to the ventilation stop state when the second inflow amount M1 is equal to or greater than the threshold value.

  As described above, the ventilation control device 1 according to the present embodiment is based on the inflow amount (second inflow amount) of air pollutants per unit time obtained using the indoor humidity, the outdoor humidity, and the concentration of air pollutants. To determine whether or not to continue ventilation. And the ventilation control apparatus 1 continues ventilation only when the 2nd inflow amount is less than a threshold value, and stops ventilation, when the 2nd inflow amount is more than a threshold value. Therefore, in this embodiment, even if the concentration of air pollutants is relatively high, ventilation of the indoor 51 is continued if the wind is weak and the amount of air flowing into the indoor 51 is small. On the other hand, even if the concentration of air pollutants is relatively low, if the wind is strong and the amount of air flowing into the indoor 51 is large, the ventilation of the indoor 51 is stopped and a large amount of air pollutants flows into the indoor 51. Is prevented. In other words, the ventilation control device 1 of the present embodiment determines whether ventilation can be continued based on the inflow amount of air pollutant (second inflow amount) rather than the measurement result of the air quality sensor 4. The amount of inflow can be suppressed and the ventilation time can be made as long as possible. Therefore, in this embodiment, it is possible to achieve both suppression of the amount of air pollutants flowing into the indoor 51 and securing of ventilation time.

  Furthermore, in this embodiment, the inflow amount of air per unit time (first inflow amount) is obtained based on the change in the amount of water vapor in the air. Therefore, in this embodiment, even if the temperature difference between the indoor temperature and the outdoor temperature is small, the inflow amount of air pollutant per unit time (second inflow amount) can be obtained, and whether ventilation can be continued or not. Can be judged.

  As described above, the ventilation control device 1 of the present embodiment includes the humidity information acquisition unit 19, the air quality information acquisition unit 12, the control unit 13, the first calculation unit 14 </ b> A, the second calculation unit 15, and the comparison unit 16. .

  The humidity information acquisition unit 19 acquires indoor humidity information and outdoor humidity information. The air quality information acquisition unit 12 acquires information on the concentration of air pollutants in the outdoors 52. The control unit 13 controls the ventilation member 2 that switches between the ventilation state and the ventilation stop state between the indoor 51 and the outdoor 52. 14 A of 1st calculation parts are the inflow amounts of the air per unit time to indoor 51 at the time of ventilation based on the time change of indoor humidity at the time of ventilation in which ventilation member 2 is in ventilation, and outdoor humidity. 1 Find the inflow. The second calculation unit 15 obtains a second inflow amount that is an inflow amount of the air pollutant per unit time into the indoor 51 during ventilation based on the concentration of the air pollutant and the first inflow amount. The comparison unit 16 compares the second inflow amount with a threshold value.

  Then, the control unit 13 continues the ventilation state of the ventilation member 2 when the second inflow amount is less than the threshold value during ventilation, and keeps the ventilation member 2 in the ventilation stop state when the second inflow amount is equal to or more than the threshold value. To.

  Further, the ventilation control system 10 of the present embodiment includes the ventilation control device 1, a first humidity measuring unit 61 that measures indoor humidity, a second humidity measuring unit 62 that measures outdoor humidity, and the concentration of air pollutants. The air quality sensor 4 and the ventilation member 2 are measured.

  Moreover, the program of this embodiment makes a computer function as the said ventilation control apparatus 1. FIG.

  As described above, the ventilation control device 1, the ventilation control system 10, and the program according to the present embodiment determine whether or not ventilation can be continued based on the inflow amount (second inflow amount) of air pollutants. It is possible to achieve both suppression of the inflow of pollutants and securing of ventilation time. Furthermore, even when the temperature difference between the indoor temperature and the outdoor temperature is small, the inflow amount of air pollutants per unit time (second inflow amount) can be obtained, and it can be determined whether ventilation can be continued or not. it can.

  In the present embodiment, the saturated water vapor amounts m10, m20, and m30 are used as variables for the temperature (indoor temperature and outdoor temperature) in the calculation formula (the above formula (11)) for obtaining the first inflow amount V1. The saturated water vapor amount may be treated as a constant. Assuming that the indoor temperature T1, the indoor temperature T2, and the outdoor temperature T3 are predetermined temperatures, the saturated water vapor amounts m10, m20, and m30 are treated as saturated water vapor amounts at a predetermined temperature, that is, constants. Thereby, the calculation formula for obtaining the first inflow amount V1 can be simplified, and the temperature information acquisition unit 11, the first temperature measurement unit 31, and the second temperature measurement unit 32 can be omitted. It can be simplified.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

DESCRIPTION OF SYMBOLS 1 Ventilation control apparatus 11 Temperature information acquisition part 12 Air quality information acquisition part 13 Control part 14 1st calculation part 15 Calculation part 16 Comparison part 2 Ventilation member

Claims (6)

A temperature information acquisition unit that acquires indoor temperature information and outdoor temperature information;
An air quality information acquisition unit for acquiring information on the concentration of air pollutants outdoors;
A control unit that controls a ventilation member that switches between a ventilation state and a ventilation stop state between the indoor and the outdoor, and
Based on the time change of the indoor temperature and the outdoor temperature during ventilation when the ventilation member is in the ventilation state, a first inflow amount that is an inflow amount of air per unit time into the indoor at the time of ventilation is obtained. A first calculation unit to be obtained;
A second calculation unit that obtains a second inflow amount that is an inflow amount of the air pollutant per unit time into the indoor at the time of ventilation based on the concentration and the first inflow amount;
A comparison unit that compares the second inflow amount with a threshold value;
The control unit continues the ventilation state of the ventilation member when the second inflow amount is less than the threshold during the ventilation, and when the second inflow amount is equal to or more than the threshold, the ventilation member In the ventilation stop state. A ventilation control device according to claim 1;
A first temperature measuring unit for measuring the indoor temperature;
A second temperature measuring unit for measuring the outdoor temperature;
An air quality sensor for measuring the concentration of the air pollutant;
A ventilation control system comprising the ventilation member. A program for causing a computer to function as the ventilation control device according to claim 1. A humidity information acquisition unit for acquiring indoor humidity information and outdoor humidity information;
An air quality information acquisition unit for acquiring information on the concentration of air pollutants outdoors;
A control unit that controls a ventilation member that switches between a ventilation state and a ventilation stop state between the indoor and the outdoor, and
Based on the time change of the indoor humidity and the outdoor humidity during ventilation when the ventilation member is in the ventilation state, a first inflow amount which is an inflow amount of air per unit time into the indoor at the time of ventilation is obtained. A first calculation unit to be obtained;
A second calculation unit that obtains a second inflow amount that is an inflow amount of the air pollutant per unit time into the indoor at the time of ventilation based on the concentration and the first inflow amount;
A comparison unit that compares the second inflow amount with a threshold value;
The control unit continues the ventilation state of the ventilation member when the second inflow amount is less than the threshold during the ventilation, and when the second inflow amount is equal to or more than the threshold, the ventilation member In the ventilation stop state. A ventilation control device according to claim 4,
A first humidity measuring unit for measuring the indoor humidity;
A second humidity measuring unit for measuring the outdoor humidity;
An air quality sensor for measuring the concentration of the air pollutant;
A ventilation control system comprising the ventilation member. A program for causing a computer to function as the ventilation control device according to claim 4.

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