JP2020016431A - Indoor air quality control device and control method - Google Patents

Abstract

To control indoor air quality on the basis of indoor and outdoor air qualities.SOLUTION: An indoor air quality control device includes: grasping parts (21, 22, 25, 26) for grasping indexes of indoor and outdoor air qualities; and a device control unit (23) for controlling devices (30,31,32) that operate indoor air quality, on the basis of indexes of air qualities grasped by the grasping parts (21, 22, 25, 26). The grasping parts (21, 22, 25, 26) grasp at least two types of indexes of air qualities.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a control device and a control method for indoor air quality.

  Air quality is sensed to control the air quality in the room. In a device for detecting indoor air quality, a sensor for detecting indoor air dirt is used, and a dirt amount for each is output based on a sensor output value in clean air and a sensor output value in a normal indoor state. It has been known. Ventilation and air cleaning are performed according to the output amount of dirt. (Patent Document 1).

JP-A-6-317549

  In the related art, ventilation and the like are performed by detecting contamination of indoor air, but no consideration is given to contamination of outdoor air. For example, air pollutants such as PM2.5 flow into the room from outside. Therefore, if the ventilation is performed based only on the indoor air quality, the indoor air may be contaminated, and desirable control is not necessarily performed.

  An object of the present disclosure is to provide an apparatus and a method for controlling indoor air quality based on indoor and outdoor air quality.

  A first aspect of the present disclosure is directed to an indoor air quality control device. The control device includes a grasping unit that grasps an index of indoor and outdoor air quality, and a device control unit that controls a device that operates indoor air quality based on the air quality index grasped by the grasping unit. The storage unit is characterized in that at least two types of air quality indicators are obtained.

  In the first aspect, the indoor air quality can be controlled based on the indoor and outdoor air qualities.

  According to a second aspect of the present disclosure, in the first aspect, the device control unit controls the device such that the index of the indoor air quality grasped by the grasping unit is within a set range.

  In the second mode, the indoor air quality can be controlled within a set range.

  According to a third aspect of the present disclosure, in the first aspect, the air quality index grasped by the grasping unit includes a concentration of a predetermined harmful substance.

  In the third aspect, the concentration of a harmful substance can be grasped as an index of air quality.

  According to a fourth aspect of the present disclosure, in the first aspect, the grasping unit grasps the concentration of the same harmful substance indoors and outdoors, and the control unit determines the concentration of the harmful substance based on the concentration of the harmful substance grasped by the grasping unit. It specifies whether the position of the source of the substance is indoor or outdoor, and controls the device based on the position of the specified source.

  In the fourth aspect, the device can be controlled based on the position of the source of the harmful substance.

  According to a fifth aspect of the present disclosure, in the first aspect, the grasping unit includes an indoor sensor that detects an index of indoor air quality, and an outdoor sensor that detects an index of outdoor air quality.

  In the fifth aspect, the indoor and outdoor air quality indicators can be directly grasped by the indoor sensor and the outdoor sensor.

  According to a sixth aspect of the present disclosure, in the first aspect, the grasping unit includes an indoor sensor that detects an index of indoor air quality, and an arithmetic unit, and the indoor sensor is configured to operate the indoor unit when the device is operated. The calculation unit detects the outdoor air quality by performing a calculation based on the change in the indoor air quality index.

  In the sixth aspect, the index of the indoor air quality can be directly grasped by the indoor sensor, and the index of the outdoor air quality can be grasped indirectly by calculation.

  A seventh aspect of the present disclosure is directed to a method for controlling indoor air quality. The control method includes a grasping step in which a grasping unit grasps an index of indoor and outdoor air quality, and a control step in which a device control unit controls a device that controls indoor air quality based on the grasped index. In the grasping step, the grasping unit grasps at least two types of air quality indicators.

  In the seventh aspect, the indoor air quality can be controlled based on the indoor and outdoor air quality.

FIG. 1 is a diagram schematically illustrating an example of an indoor air quality control device according to the present disclosure. FIG. 2 is a diagram schematically illustrating another example of the indoor air quality control device of the present disclosure. FIG. 3 is a diagram illustrating air quality control by the indoor air quality control device of the present disclosure. FIG. 4 is a diagram illustrating air quality control by the indoor air quality control device of the present disclosure. FIG. 5 is a diagram illustrating air quality control by the indoor air quality control device of the present disclosure. FIG. 6 is a diagram illustrating air quality control by the indoor air quality control device of the present disclosure. FIG. 7 is a diagram schematically illustrating still another example of the indoor air quality control device of the present disclosure.

<< Embodiment >>
Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

-Configuration of indoor air quality control device-
FIG. 1 is a diagram schematically illustrating the indoor air quality control device according to the present embodiment. The indoor air quality control device shown in FIG. 1 includes a grasping unit (21, 22, 25, 26) for grasping indoor and outdoor air quality indices, and a device (30, 31, 32) for operating indoor air quality. ) Based on the air quality index grasped by the grasping sections (21, 22, 25, 26). The grasping unit (21, 22, 25, 26) grasps at least two types of air quality indicators.

  More specifically, in FIG. 1, one of a control device (20) for controlling the indoor air quality in the room (10) and one of the devices (30, 31, 32) for controlling the air quality in the room (10) A fan (30) for taking in outdoor air into the room is provided. The control device (20) includes sensors (21, 22) for detecting predetermined items related to air quality as a grasping unit for grasping an index of air quality. The sensors (21, 22) include an indoor sensor (21) for detecting indoor air and an outdoor sensor (22) for detecting outdoor air. The control device (20) includes a device control unit (23) that controls the fan (30) based on the air quality index grasped by the sensors (21, 22). Note that the sensor (21, 22) is shown in the case of wireless connection in the figure, but may be wired.

  If the indoor air quality is controlled based only on the indoor air quality index without grasping the outdoor air quality index, polluted air containing harmful substances etc. will be taken in from the outdoor, rather degrading the indoor air quality. May be caused. On the other hand, according to the indoor air quality control device (20) of the present embodiment, the indoor air quality can be controlled based on the indoor and outdoor air qualities. Therefore, it is possible to more appropriately control the indoor air quality.

-Other configuration of indoor air quality control device-
FIG. 2 shows a configuration example of the air quality control device according to the present embodiment, which is different from the example of FIG. In the example of FIG. 2, instead of the fan (30), an air conditioner (31) equipped with a catalyst or a filter for adsorbing gas is provided as the device (30, 31, 32). The air conditioner (31) purifies air by indoor circulation in the room (10). In addition, instead of using the outdoor sensor (22) to grasp the outdoor air quality index, public information, cloud information, and the like are obtained through the Internet or the like. In FIG. 2, an index of outdoor air quality is acquired from the server (25). In this case, the grasping unit is a receiving unit for receiving information from the server (25).

  With such a configuration, the indoor air quality can be controlled based on the indoor and outdoor air qualities. Alternatively, a duct air volume switching damper (VAV) can be used as the device (30, 31, 32). In addition, there is no particular limitation on the specific types of the devices (30, 31, 32) for controlling the air quality. Further, as the devices (30, 31, 32), a fan (30), an air conditioner (31) and a damper (32) may be used in combination, or another device may be used in combination.

-Still another configuration of the indoor air quality control device-
FIG. 7 shows a configuration example of the air quality control device according to the present embodiment which is further different from FIGS. 1 and 2.

  In the example of FIG. 7, a fan (30) and a device control unit (23) for controlling the fan (30) are provided in the same manner as the example of FIG. In addition, as in the example of FIG. 1, an indoor sensor (21) for detecting indoor air is provided as a grasping unit for grasping an index of air quality.

  However, the example in FIG. 7 does not include the outdoor sensor (22) for detecting outdoor air. Further, an arithmetic unit (26) is provided as a component of the grasping unit.

  In FIG. 7, the calculation unit (26) is shown in a form provided in the device control unit (23). This exemplifies a configuration in which the device control unit (23) includes a computer, and the computer has a function of the arithmetic unit (26). However, an operation unit (23) may be provided separately from the device control unit (23).

  In the example of FIG. 7, the indoor air quality index is directly detected and grasped by the indoor sensor (21). The index of the outdoor air quality is indirectly grasped using the indoor sensor (21) and the calculation unit (26). Regarding this, first, when the fan (30) as the device (30, 31, 32) is operated, the index of indoor air quality changes. This change depends on the outdoor air quality in addition to the size of the room (10), the performance of the fan (30), and the like. The size of the room (10), the performance of the fan (30), and the like can be grasped as known information. Therefore, the indoor sensor (21) detects a change in the index of indoor air quality when the fan (30) is operated. By performing the calculation by the calculation unit (26) based on this, it is possible to grasp the index of the outdoor air quality. Thus, even in the example of FIG. 7 without the outdoor sensor (22), the index of the outdoor air quality can be grasped.

  A specific example of a method for grasping the outdoor air quality using the indoor sensor (21) and the calculation unit (26) will be described.

  First, consider a state in which the devices (30, 31, 32) are stopped and the indoor air quality is constant. For example, the amount of pollutants generated indoors (the harmful substances described later as an indicator of air quality) matches the amount of pollutants discharged outside the room due to natural ventilation, and the amount of pollutants in the room is constant. It is in the state of becoming.

  When the equipment (30, 31, 32) is operated and ventilated in this state, the amount of pollutants in the room decreases. The following equation is established for the total amount of pollutants in the room after operating the devices (30, 31, 32) for a predetermined time.

Absolute amount of contaminants in the room before operation of the equipment-Absolute amount of contaminants discharged outside the room + Absolute amount of contaminants flowing into the room = Absolute amount of contaminants in the room after operation of the device Holds.

Cb × (V−Q × t) + Cout × Q × t = Ca × V
The meaning of each symbol is
Cb: Concentration of pollutants in the room before operation of the device (before ventilation) V: Volume of room Q: Inflow of air due to ventilation (operation of device) Cout: Concentration of contaminants outside the room t: Ventilation (operation of device) Is the concentration of contaminants in the room t hours after the operation of the device (after ventilation).

From the above equation, the following equation is derived.
Cout = {Ca × V−Cb × (V−Q × t)} / (Q × t)
Here, V and Q (depending on the performance of the device) can be grasped in advance, and Ca and Cb are measured by the indoor sensor (21). The operation time t of the device may be measured. Therefore, Cout can be calculated based on this equation. By performing such a calculation in the calculation unit (26), even in the case of FIG. 7 without the outdoor sensor (22), it is possible to grasp the index of the outdoor air quality. Note that the calculation method is not limited to the case where the above equation is used.

  Further, both the outdoor sensor (22) and the server (25) may be provided in order to grasp the index of the outdoor air quality. At this time, some indices may be grasped by the outdoor sensor (22), and other indices may be acquired from the server (25). There is no particular limitation on the combination of the devices (30, 31, 32), the outdoor sensor (22) and the server (25).

  Further, the determination of the outdoor air quality index using the indoor sensor (23) and the calculation unit (26) may be combined with one or both of the outdoor sensor (22) and the server (25). For each type of index, it can be grasped by any method. In addition, both the index grasped by the calculation and the index grasped by the sensor can be used.

  Also, the device control unit (23) controls the devices (30, 31, 32) such that the indoor air quality index grasped by the grasping units (21, 22, 25, 26) falls within the set range. good.

  Thereby, the air quality can be controlled within a desired range. For example, as for various indoor air quality indices, a desirable range is legally determined according to the purpose of use of a room such as a house or an office. ) Control. Further, a range to be independently controlled may be set for an item having no legal standard, or a standard different from the legal standard may be set.

-Air quality index-
The air quality index grasped by the grasping unit (21, 22, 25, 26) may include the concentration of a predetermined harmful substance.

Specifically, items of air quality detected by the sensors (21, 22) include temperature, humidity, and concentration of a predetermined substance. The predetermined substance is, in particular, a harmful substance (including a substance that is harmful at a high concentration), such as CO (carbon monoxide), CO ₂ (carbon dioxide), PM2.5, PM10, formaldehyde, and TVOC ( It may be one or more of Total Volatile Organic Compounds, O ₃ (ozone), NO ₂ (nitrogen dioxide) and SO ₂ (sulfur dioxide).

  In addition, humidity is also included as an index of air quality. Water is not a harmful substance, but humidity, which is the amount of water in the air, affects comfort and the like. The index of the air quality also includes the temperature.

  Table 1 shows examples and measured values of harmful substances detected by the indoor sensor (21), target values for the respective substances (values less than or equal to this value are set ranges), and differences (reductions) between the measured values and the target values. An example is shown below. The target value indicates a reference value by WELL certification as an example.

  In Table 1, for example, the indoor concentration of formaldehyde is 0.125 ppm, which exceeds the target value of 0.027 ppm by 0.098 mmp. Therefore, reduction (improvement) of this is desired. Further, as for CO, the indoor concentration is 0 ppm, which is lower than the target value of 9 ppm, so that reduction is unnecessary. For other substances, the amount to be improved can be determined from the difference between the indoor concentration and the target value determined by the indoor sensor (21).

In the air quality control device of the present embodiment, the sensors (21, 22) grasp at least two types of air quality indices. This, together with the indoor sensor (21) to grasp one indicator (e.g., CO ₂ concentration), the outdoor sensor (22) may be to grasp the other indicators (e.g. PM2.5 concentration). Further, the indoor sensor (21) and the outdoor sensor (22) may detect two types (for example, CO ₂ concentration and PM 2.5 concentration) or more respectively. Further, the indoor sensor (21) may grasp a plurality of indices, and the outdoor sensor (22) may grasp a plurality of indices different from part or all of them. The indoor sensor (21) and the outdoor sensor (22) may each include a plurality of types of sensors in order to grasp a plurality of types of indicators.

As an example, a substance which is likely to be generated indoors and a substance which is likely to be generated outdoors can be grasped and used for controlling air quality. For example, if the normal office CO ₂ is likely to occur indoors, PM2.5 is unlikely to occur. In addition, the outdoor air (outside air) tends to have a lower CO ₂ concentration and a higher PM 2.5 concentration than in a normal office room. Therefore, the CO ₂ concentration in the chamber, to grasp the PM2.5 concentration of the outdoor may be controlled air quality in the room. In this case, the number of sensors (21, 22) can be reduced and the control can be simplified as compared to detecting the CO ₂ concentration and the PM 2.5 concentration both indoors and outdoors, so that the cost can be reduced.

  In addition, the grasping unit (21,22,25,26) grasped the concentration of the same harmful substance indoors and outdoors, and the equipment control unit (23) grasped the grasping units (21,22,25,26). Based on the concentration of the harmful substance, specify whether the location of the source of the harmful substance is indoor or outdoor, and control the equipment (30, 31, 32) based on the location of the specified source. May be.

  Table 2 shows an example of this. For example, for formaldehyde, the inflow from the outside air is 0 ml / h, and the indoor emission is 50 ml / h. Therefore, the source of formaldehyde is specified to be indoors, and remedial action is taken based on this. For example, the equipment control unit (23) controls the fan (30) to increase the ventilation, thereby taking in outside air containing no formaldehyde and reducing the indoor formaldehyde concentration. As a countermeasure, a filter may be installed in the circulation path.

  As for TCOC, it can be specified that the source is indoors. Therefore, measures are to increase the ventilation and to install a filter in the circulation path, as in the case of formaldehyde.

As for CO, both the inflow from outside air and the indoor generation are 0 ml / h. Therefore, control for improving the CO concentration is unnecessary. For PM2.5, inflow from the outside air is 100,000 micrograms / ^{m 3,} from indoor emission is 0 Pg / ^{m 3,} the source is identified to be outside. As for CO ₂ , the inflow from the outside air is 160,000 μg / m ³ , the indoor generation is 300,000 μg / m ³ , and it is generated both indoors and outdoors. Specified. In this way, for each substance, the amount and source (whether indoor or outdoor) are grasped, and the equipment control unit (23) controls the air quality (30, 31, 32) accordingly. Control.

In some cases, formaldehyde is a source of newly introduced furniture, and TVOC is a source of aromatics. When the indoor air quality control device according to the present disclosure is used, it is possible to specify whether each generation source is indoor or outdoor, and it is easy to specify a specific generation source. If furniture, air fresheners, etc. are sources of harmful substances, it is possible to take measures such as removing them. Similarly, for CO ₂ concentrations, indoor sources are mainly humans. Therefore, measures such as changing the arrangement (seats) of humans and increasing the occupied area of offices and the like are also measures.

The air quality control device (20) of the present disclosure controls air quality based on at least two types of air quality indices. Therefore, it is possible to improve the air quality comprehensively while avoiding that the control for improving one index (for example, the CO ₂ concentration) greatly deteriorates the other index (for example, the PM 2.5 concentration). it can.

-Device control method-
An example of a method for controlling the devices (30, 31, 32) according to the concentrations of the substances detected by the sensors (21, 22) will be described.

For certain substances, the amount of the indoor concentration C ₀ and room (10) in the outdoor air E is assumed to be constant. Further, in a room (10), which occurs naturally ventilation natural ventilation amount Q _1, and, it is assumed that the forced ventilation forced ventilation Q ₂ is being carried out through the filter efficiency eta ₂ by the fan (30) . Furthermore, in a room (10), an air conditioner equipped with a filter (31) is provided, the cleaning air purifier quantity Q ₃ is performed by a filter efficiency eta _3.

At this time, regarding the target substance,
The amount of inflow into the room + the amount of generation in the room = the amount of discharge to the outside are established. From this, the following equation holds.
(C ₀ * Q ₁ ) + (C ₀ * Q ₂ * (1-η ₂ )) + (C * Q ₃ * (1-η ₃ )) + E = C * (Q ₁ + Q ₂ ) + C * _{Q 3}
The meaning of each symbol is
C ₀ : concentration in outdoor air Q ₁ : natural ventilation Q ₂ : indoor inflow (air inflow due to forced ventilation)
η ₂ : Forced ventilation filter efficiency Q ₃ : Air cleansing amount η ₃ : Air cleansing filter efficiency E: Indoor generated amount C: Indoor concentration.

From the above equation, the following equation is derived.
C = ((C ₀ * Q ₁ ) + (C ₀ * Q ₂ * (1-η ₂ )) + E) / (Q ₁ + Q ₂ + Q ₃ * η ₃ )
As an example of control by the device control unit (23), control based on such an expression may be performed. That is, such calculation is performed by the device control unit (23). An operation unit (26) shown in FIG. 7 is provided, and this operation may be performed. For example by controlling the fan (30) and / or the air conditioner (31), to change the forced ventilation amount Q ₂ and / or air purification quantity Q _3, it is possible to control the indoor concentration C.

−Example of control−
Hereinafter, a method of controlling the air quality of the room (10) by the indoor air quality control device (20) will be described with reference to examples.

(First example regarding control)
FIG. 3 is a diagram illustrating a first example of the control of the indoor air quality in the room (10) including the fan (30). The room (10) is provided with an indoor air quality control device (20) including sensors (21, 22) and a device control unit (23) as in FIG. A server (25) may be used instead of (22).

The left diagram (shown as A) in FIG. 3 shows a state before performing the air quality control. At this time, the sensors (21, 22) grasp that the CO ₂ concentration in the room is high and the dust concentration (PM 2.5 concentration) in the room is low. In this case, as shown in the right diagram of FIG. 3 (indicated by B), the fan (30) is controlled to operate or increase the ventilation volume. In this way, room air having a high CO ₂ concentration is discharged from the room (10). Since it has been confirmed that the PM2.5 concentration of the outdoor air is low, this operation does not increase the PM2.5 concentration in the room.

  That is, the indoor air quality can be appropriately controlled by grasping the two types of indexes for the indoor air and the outdoor air.

In order to reduce the CO ₂ concentration, the ventilation rate is kept at zero, and an indoor air conditioner (not shown in FIG. 3) equipped with a catalyst for adsorbing a gas such as CO ₂ is operated. Purification can also be performed by circulation.

(Second example regarding control)
FIG. 4 is a diagram illustrating a second example of the control of the indoor air quality in the room (10). In this example, in the room (10), both the fan (30) and the air conditioner (31) are provided. Note that the illustration of the indoor air quality control device (20) is omitted to avoid complication of the drawing.

In the state of the upper left diagram (indicated by C) in FIG. 4, it is understood that the CO ₂ concentration of the indoor air is high and the PM2.5 concentration of the outdoor air is also high. In this case, when outdoor air is taken into the room by the fan (30), the CO ₂ concentration is reduced in the room, but the PM 2.5 concentration is increased.

  Therefore, as shown in the upper right diagram (indicated by D) of FIG. 4, when the PM2.5 concentration of the outdoor air is high, the increase in the PM2.5 concentration in the room is suppressed by reducing the ventilation volume of the fan (30). . Normally, the PM2.5 concentration of the outdoor air fluctuates depending on the time zone or the like. Therefore, the ventilation volume of the fan (30) is increased during the low time zone (not shown).

In addition, as shown in the lower right diagram of FIG. 4 (indicated by E), dust (PM2.5) that has entered the room is cleaned by indoor circulation while taking in outdoor air to reduce the CO ₂ concentration of room air. You may. That is, the air conditioner (31) equipped with the filter is operated or the amount of cleaning is increased, thereby removing PM2.5. At this time, the ventilation rate may be reduced in order to suppress the intrusion of PM2.5 into the room.

(Third example regarding control)
FIG. 5 is a diagram illustrating a third example of the control of the indoor air quality in the room (10). Here also, the illustration of the indoor air quality control device (20) is omitted.

In the state of the upper left diagram (indicated by F) in FIG. 5, it is understood that the CO ₂ concentration in the indoor air is low and the PM2.5 concentration in the outdoor air is high. In this case, if outdoor air is taken into the room by the fan (30), the PM2.5 concentration in the room will increase. Also, since the indoor CO ₂ concentration is low, the ventilation requirements for CO ₂ are small.

Therefore, as shown in the right diagram (G) of FIG. 5, the fan (30) is stopped to stop ventilation. As a result, an increase in the PM2.5 concentration in the room can be avoided. It is considered that if this state is continued, the indoor CO ₂ concentration will increase. When the indoor sensor (21) grasps this, the process may shift to, for example, the first example or the second example.

(Fourth example regarding control)
FIG. 6 is a diagram illustrating a fourth example of the control of the indoor air quality in the room (10).

  In this example, in addition to the room (10) where people mainly stay as indoor spaces, other spaces (11) such as corridors and elevator halls are considered. The outdoor air taken in by the fan (30) is sent to the room (10) and the other space (11) through the duct (33). The duct (33) is provided with a damper (32), which can control the flow of air to the room (10) and the other space (11).

In the left diagram of FIG. 6 (shown as H), it is understood that the indoor CO ₂ concentration is high and the outdoor PM2.5 concentration is low. The damper (32) is set so as to send outdoor air taken in by the fan (30) to both the room (10) and the other space (11).

In this case, as shown in the right diagram of FIG. 6 (indicated by I), in order to reduce the CO ₂ concentration in the room (10), the damper (32) is operated to send outdoor air only to the room (10). To As a result, the amount of outdoor air taken into the room (10) increases, so that the CO ₂ concentration in the room (10) can be rapidly reduced. At this time, the ventilation of the other space (11) is stopped, but such control may be performed by giving priority to the air quality of the room (10), which is a living room where people mainly stay.

(Other examples related to control)
In the first to fifth examples, the case where the control is performed by grasping the indoor CO ₂ concentration and the outdoor PM 2.5 concentration has been described. In a typical office, etc., since it is rare that the CO ₂ concentration than the room in that and the outdoor PM2.5 occurs in chamber becomes higher, it is possible to achieve a good indoor air by such control. Further, the number of sensors can be suppressed to reduce the cost.

  However, under other conditions, for example, in a factory or the like, PM2.5 may be generated indoors. In such a case, the control may be performed by grasping the PM2.5 concentration both indoors and outdoors.

Consider a case where the indoor PM2.5 concentration is high and the outdoor PM2.5 concentration is low. This can be done by replacing the indoor CO ₂ concentration with the indoor PM 2.5 concentration in FIG. 3 showing the first example. That is, ventilation is performed by the fan (30), and outdoor air having a low PM2.5 concentration is taken in, whereby the indoor PM2.5 concentration can be reduced.

Also, low PM2.5 concentration in the room, and, for when the PM2.5 concentration of the outdoor high, in FIG. 5, which shows a third example, the CO ₂ concentration may be read as the PM2.5 concentration. That is, by stopping the ventilation, the invasion of PM2.5 from outside can be prevented, and the state in which the concentration of PM2.5 is low in the room can be maintained.

  When the PM2.5 concentration is high both indoors and outdoors, in order to reduce the PM2.5 concentration in the room, it is desirable to perform cleaning by an air conditioner (31) equipped with a filter.

  In addition to the PM2.5 concentration, other substances as listed in Table 2 may be grasped indoors and outdoors to control the devices (30, 31, 32). Further, a plurality of indices may be grasped and controlled indoors and outdoors.

  Although the embodiments and the modified examples have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the claims. The above embodiments and modifications may be combined or replaced as appropriate as long as the function of the present disclosure is not impaired.

  As described above, the present disclosure is useful for a control device and a control method of indoor air quality.

10 rooms
11 Other spaces
20 Control device
21 Indoor sensor (grasping part)
22 Outdoor sensor (grasping part)
23 Device control section
25 Server (grasping unit)
26 Computing unit (grasping unit)
30 Fan (Equipment)
31 Air conditioner (equipment)
32 Damper (equipment)
33 Duct

Claims (7)

A grasping unit (21,22,25,26) for grasping indoor and outdoor air quality indicators;
A device control unit (23) for controlling devices (30, 31, 32) for operating the indoor air quality based on the air quality index grasped by the grasping unit (21, 22, 25, 26). With
The indoor air quality control device, characterized in that the grasping sections (21, 22, 25, 26) grasp at least two types of the air quality indicators. In claim 1,
The device control unit (23) controls the devices (30, 31, 32) such that the index of the indoor air quality grasped by the grasping units (21, 22, 25, 26) is within a set range. A control device for indoor air quality, characterized in that: In claim 1 or 2,
The indoor air quality control device, wherein the air quality index grasped by the grasping unit (21, 22, 25, 26) includes a concentration of a predetermined harmful substance. In any one of claims 1 to 3,
The grasping unit (21, 22, 25, 26) grasps the same harmful substance concentration in the room and the outside,
The device control unit (23) is configured to determine whether the position of the source of the harmful substance is in the room or the outside, based on the concentration of the harmful substance grasped by the grasping unit (21, 22, 25, 26). An indoor air quality control device, which specifies whether there is a device and controls the devices (30, 31, 32) based on the specified position of the generation source. In any one of claims 1 to 4,
The grasping unit (21, 22, 25, 26) includes an indoor sensor (21) for detecting an index of indoor air quality, and an outdoor sensor (22) for detecting an index of outdoor air quality. Indoor air quality control device. In any one of claims 1 to 4,
The grasping unit (21, 22, 25, 26) includes an indoor sensor (21) for detecting an index of indoor air quality, and a calculating unit (26),
The room sensor (21) detects a change in an index of indoor air quality when the device (30, 31, 32) is operated,
The indoor air quality control device, wherein the arithmetic unit (26) performs an arithmetic operation based on the change in the index of the indoor air quality to grasp the outdoor air quality. A grasping process in which a grasping unit (21, 22, 25, 26) grasps indoor and outdoor air quality indices;
A control step of controlling a device (30, 31, 32) for controlling the air quality in the room by a device control unit (23) based on the grasped index,
In the grasping step, the grasping unit (21, 22, 25, 26) grasps at least two types of the air quality indices, and the indoor air quality is controlled.

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