JP7357511B2 - air conditioning system - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act Presented at the 23rd Housing and Buildings CO▲2▼ Symposium held on February 18, 2019

The present invention provides a plurality of floor air outlets distributed on the floor of a living room, an outside air introduction part that introduces outside air into an underfloor space where the plurality of floor air outlets communicate with each other, and a The present invention relates to an air conditioning system including an introduction air volume control unit that controls the amount of outside air introduced into a space according to the state inside the living room.

An air conditioning system that blows outside air introduced into the underfloor space from an outside air introduction part such as an outside air treatment device into the living room above the floor through multiple floor air outlets distributed on the floor improves energy efficiency and comfort. In order to achieve both of these, the amount of outside air introduced from the outside air introduction section may be controlled depending on the air quality state such as the CO2 concentration in the living room (for example, see Patent Document 1). Furthermore, the air conditioning system of Patent Document 1 detects the presence or absence of people in the room as a whole and the number of people in the room, and controls the amount of outside air introduced in consideration of the detection results.

Japanese Patent Application Publication No. 2015-137776

However, in such an air conditioning system, when the amount of outside air introduced is reduced due to reasons such as a small number of people in the room, each of the plurality of floor air outlets distributed on the floor The amount of outside air blown out decreases. In this case, the quality of the exhaust gas emitted from the living room, such as the concentration of carbon dioxide, will not deteriorate, but the carbon dioxide concentration and other quality of the exhaust gas discharged from the living room will not deteriorate, but the carbon dioxide concentration will not be provided to each resident who is active in the living room from the floor air outlet located nearby. As a result, there is a concern that the comfort and intellectual productivity of the occupants will decrease, for example.

In view of this situation, the main problem of the present invention is to transfer outside air introduced into the underfloor space from an outside air introduction part such as an outside air treatment device into a living room on the floor through a plurality of floor outlet ports distributed on the floor. An object of the present invention is to provide a technology that can prevent a decline in the comfort and intellectual productivity of occupants in a living room while improving energy efficiency in an air conditioning system that blows air into the room.

A first feature of the present invention is a plurality of floor air outlets distributed on the floor of a living room;
an outside air introduction part that introduces outside air into an underfloor space in which the plurality of floor air outlets communicate;
An air conditioning system comprising: an introduction air volume control unit that controls an introduction air volume of outside air from the outside air introduction unit to the underfloor space according to a state inside the living room,
a room occupant distribution detection unit capable of detecting a distribution state of occupants in the living room;
a blowout air volume individual change unit capable of individually changing the blowout volume of outside air into the living room at each of the plurality of floor surface air outlets;
The airflow individual change unit is controlled based on the detection result of the occupant distribution detection unit to adjust the airflow rate to the manned area floor air outlet, which is the floor air outlet facing the manned area where the occupants exist in the living room. a blowout air volume balance control unit that sets the blowout airflow volume of outside air from the outlet to be larger than the blowout airflow volume of outside air from the unmanned area floor outlet, which is the floor outlet facing an uninhabited area where no occupant is present in the living room; , comprising ;
comprising an air quality detection unit that detects the air quality of exhaust air from the living room,
The introduction air volume control section controls the introduction air volume of outside air from the outside air introduction section to the underfloor space so that the air quality detected by the air quality detection section is maintained at a target air quality;
Each of the plurality of floor air outlets is provided with a floor fan that blows air from the underfloor space into the living room,
a floor blower fan control unit that stops a floor blower fan of the unmanned area floor outlet and operates a floor blower fan of the manned area floor outlet;
The floor ventilation fan control unit sets the total airflow volume of the floor ventilation fan of the manned area floor outlet to the volume of outside air introduced into the underfloor space from the outside air introduction unit controlled by the introduction air volume control. The point is that total air flow setting control is executed to set substantially the same amount of air .

According to this configuration, even if the amount of outside air introduced from the outside air introduction part to the underfloor space is lowered due to reasons such as a small number of people in the living room, the above-mentioned blowout The air volume balance control section makes it possible to set the volume of outside air blown from the manned area floor air outlet to be larger than the volume of outside air blown from the unmanned area floor air outlet. With this, it is possible to effectively provide a sufficient amount of fresh outside air to each person in the room who is active in the room from the floor outlet in the manned area that exists in the vicinity.
Therefore, according to the present invention, in an air conditioning system that blows outside air introduced into the underfloor space from an outside air introduction part such as an outside air processing device into a living room on the floor through a plurality of floor air outlets distributed and formed on the floor, It is possible to provide a technology that can prevent a decline in the comfort of people in a living room and intellectual productivity while improving energy conservation.
Furthermore, according to this configuration, while the air quality of the exhaust air from the living room detected by the air quality detection unit is maintained at the target air quality, the intake air volume control unit controls the intake air volume of outside air from the outside air introduction unit. It is possible to reduce the energy consumption and realize an improvement in energy saving performance.
Furthermore, the outside air introduced into the underfloor space from the outside air introduction part is likely to be blown into the living room through the floor outlet that is close to the point where the outside air is introduced into the underfloor space, and the outlet that is far from the introduction point is tend to be difficult to reach.
Therefore, according to this configuration, each of the plurality of floor air outlets is provided with the above-mentioned floor air blower fan. At the outlet, outside air can be blown out with a desired amount of air.
Furthermore, the floor ventilation fan control section stops the floor ventilation fan at the unmanned area floor outlet and operates the floor ventilation fan at the manned area floor outlet, thereby controlling the flow of outside air into the underfloor space, for example. Even if the static pressure in the underfloor space decreases by reducing the introduced air volume, the outside air introduced into the underfloor space can be actively blown out into the living room by the floor fan at the floor outlet in the manned area. I can do it.
Further, the floor ventilation fan control section executes the total airflow setting control to set the total airflow of the floor ventilation fan of the manned area floor outlet in accordance with the amount of outside air introduced into the underfloor space. This allows the floor fan to be operated at an output that corresponds to the amount of outside air introduced. With this, it is possible to suppress deterioration in energy saving performance caused by the operation of the floor blower fan with excessive output.

A second characteristic configuration of the present invention is that the outside air introduction section is configured as a ventilation device that supplies outside air taken in from outdoors to the underfloor space as supply air while exhausting return air taken in from the living room to the outside as exhaust air. In addition to being an outside air processing device,
Separately from the outside air processing device, the air conditioner is provided which generates conditioned air by cooling or heating air taken in from the living room and blows out the conditioned air into the living room.

A third characteristic configuration of the present invention is that the individual blowout air volume changing unit is provided with a damper that is provided at each of the plurality of floor air outlets and can open and close the floor air outlet,
The blowout air volume balance control section opens the damper of the manned area floor air outlet and closes the damper of the unmanned area floor air outlet.

According to this configuration, since the damper is provided at each of the plurality of floor outlet outlets, the outlet air volume individual changing unit opens and closes these dampers individually to air the outside air at each of the plurality of floor outlet outlets. By switching between the presence and absence of air blowing, it is possible to individually change the amount of outside air blown from each of the plurality of floor air outlets.
Then, the blowout air volume balance control unit opens a damper of a floor outlet in the manned area near the person in the room, blows outside air from the floor outlet in the manned area to the person in the room, and The damper of the unmanned area floor outlet is closed to stop wasteful blowing of outside air from the unmanned area floor outlet into the living room, while preventing a decline in employee comfort and intellectual productivity. This can contribute to improving energy saving by reducing the amount of outside air introduced from the outside air introduction section.

A fourth characteristic configuration of the present invention is that the floor blower fan control unit executes individual air blowing amount setting control for controlling the individual output of each operating floor blower fan arranged in the manned area. , in the individual airflow setting control, the individual airflow of the operating floor fans is equalized by dividing the airflow of outside air into the underfloor space by the number of the operating floor fans. The point is to set it to .

A fifth characteristic configuration of the present invention is that the room occupant distribution detection unit is configured to be able to detect the number of people in the room in the manned area,
In each of the plurality of manned areas, the floor fan control unit adjusts the output of the floor fan of the manned area floor outlet to the number of people in the room detected by the person distribution detection unit. The point is that individual air blowing volume setting control is performed.

According to this configuration, the individual air blowing amount setting control is executed by the floor blowing fan control unit, and the output of the floor blowing fan of the manned area floor air outlet is adjusted to the area where the manned area floor air outlet faces the manned area. By setting the amount according to the number of people in the area, it is possible to provide each person in the manned area with just enough fresh outside air. As a result, while suppressing the decline in the comfort and intellectual productivity of people in the room, the amount of outside air introduced from the outside air intake section can be reduced as much as possible, and further energy savings can be achieved. I can do it.

A diagram showing a schematic configuration of an air conditioning system according to this embodiment Diagram showing the arrangement of floor air outlets and human sensors in a living room in a plan view

Embodiments of an air conditioning system according to the present invention will be described based on the drawings.
As shown in FIG. 1, the air conditioning system (hereinafter referred to as the main air conditioning system) includes a plurality of floor air outlets 11 distributed on the floor 2 of a living room R, and a plurality of floor air outlets 11. An outside air processing device 40 (an example of an outside air introduction section) is provided for introducing supply air SA, which is treated outside air, into the communicating underfloor space 20. This air conditioning system is a system that blows out the supply air SA introduced into the underfloor space 20 from the outside air processing device 40 into the living room R on the floor 2 through the plurality of floor air outlets 11 distributed on the floor 2. It is configured as.
Further, a control device 50 is provided that functions as an introduction air volume control section 51 and the like that controls the introduction air volume of the supply air SA from the outside air processing device 40 to the underfloor space 20 according to the state inside the living room R.

An underfloor space 20 is formed below the floor surface 2 of the living room R. This underfloor space 20 is provided with a supply air inlet 21 that blows out the supply air SA supplied from the outside air processing device 40. The air supply SA introduced into the underfloor space 20 from the air supply inlet 21 is blown out into the living room R through the floor air outlet 11 as appropriate.

A variable air volume unit 22 is provided in a passage of air supply SA leading from the outside air processing device 40 to the air supply inlet 21 . The variable air volume unit 22 is configured to measure the air volume introduced into the underfloor space 20 as the air supply air volume, and adjust the damper opening to set the air supply air volume to a desired target air volume. There is.

A ceiling space 30 is formed above the ceiling surface 3 of the living room R. This ceiling space 30 is provided with a return air outlet 35 that takes in return air RA to be supplied to the outside air processing device 40. A return air fan 31 is provided in the ceiling space 30. This return air fan 31 is configured to be able to take in the air in the living room R from a return air intake port 31a provided in the living room R, and introduce the taken air into the ceiling space 30 from a return air outlet 31b. has been done.
A plurality of ventilation holes 4 are provided in the ceiling surface 3. This vent 4 allows air to be taken in from the living room R to the ceiling space 30 even when the return air fan 31 is stopped. Note that such a vent 4 can be formed, for example, by providing a gap at the edge of a ceiling radiation panel unit (not shown) provided on the ceiling surface 3.

A variable air volume unit 36 is provided in the return air RA path leading from the return air outlet 35 to the outside air processing device 40 . The variable air volume unit 36 is configured to be able to measure the intake air volume of the return air RA from the ceiling space 30 as the return air volume and set the return air volume to a desired target air volume by adjusting the damper opening degree. There is.

A package air conditioner 33 is provided in the ceiling space 30. This package type air conditioner 33 cools or heats the air taken in from the ceiling space 30 to generate conditioned air, and blows out the conditioned air into the living room R from the conditioned air outlet 34 provided on the ceiling surface 3. It is composed of Although the outside air processing device 40 is configured to take in air from the ceiling space 30 in this embodiment, it may be configured to take in air from inside the living room R.

The outside air processing device 40 discharges the return air RA taken in from the return air outlet 35 that opens into the ceiling space 30 outdoors as exhaust EA, and uses the energy of the return air RA to generate outside air OA taken in from outside. It is configured as a ventilation device that processes the outside air OA and supplies the processed outside air OA as the air supply SA to the air supply inlet 21 that opens into the underfloor space 20 . In this embodiment, the outside air processing device 40 is configured to take in the air in the ceiling space 30 as return air RA from the return air outlet 35 that opens into the ceiling space 30. The configuration may be such that the air in the living room R is taken in as return air RA from the air exhaust port.
The introduction air volume control unit 51 in which the control device 50 functions controls the introduction air volume of the supply air SA from the outside air processing device 40 to the underfloor space 20 by changing the target air volume of the variable air volume units 22 and 36. I can do it.

In the return air RA passage leading from the return air outlet 35 to the outside air processing device 40, there is a carbon dioxide pipe that directly detects the carbon dioxide concentration of the return air RA taken in from inside the living room R as the air quality of the exhaust air from inside the living room R. A concentration sensor 6 (an example of an air quality detection section) is provided. Then, the introduction air volume control unit 51 in which the control device 50 functions controls the flow from the outside air processing device 40 to the underfloor space 20 so that the carbon dioxide concentration detected by the carbon dioxide concentration sensor 6 is maintained at a desired target carbon dioxide concentration. Controls the amount of introduced air SA (outside air). As a result, when the number of occupants M in the room R is small, the flow rate of the supply air SA introduced from the outside air processing device 40 into the underfloor space 20 is reduced as much as possible, thereby improving energy saving. It turns out.

As shown in FIG. 2, the living room R includes a plurality of areas A1 to A6 that are not divided by walls or the like. At least one floor air outlet 11 is arranged in each of the plurality of areas A1 to A6 so as to face the area in which it is installed. Further, at least one human sensor 5 is arranged in each of the plurality of areas A1 to A6 to detect the presence or absence of a person M present in the installation target area.
The control device 50 functions as a room occupant distribution detection unit 52 that detects the distribution state of the occupants M in the room R. The room occupant distribution detection unit 52 detects the presence or absence of the room occupant M in each of the plurality of areas A1 to A6 as the distribution state using the human sensor 5 provided in each of the plurality of areas A1 to A6. do.
Note that the human sensor 5 can also be used for lighting control to appropriately and rationally illuminate the person M in the room. Further, as the human sensor 5, a multi-sensor that can detect the illuminance of the installation location in addition to the function of sensing a person can be used.

As shown in FIGS. 1 and 2, each of the plurality of floor air outlets 11 distributed on the floor 2 is provided with a floor air outlet device 10, and the control device 50 controls areas A1 to A6. It is configured such that the operation of the floor blowing device 10 can be controlled at each time. Further, this floor blowing device 10 is provided with a motor damper 12 that can open and close the floor blowing outlet 11. The motor damper 12 substantially stops blowing out the supply air SA from the floor air outlet 11 into the living room R by being closed by the control device 50, and from the floor air outlet 11 by being opened by the control device 50. Blow-out of supply air SA into the living room R is allowed. That is, the motor damper 12 provided at each of the plurality of floor air outlets 11 can individually change the air volume of the supply air SA into the living room R at each of the plurality of floor air outlets 11. Functions as a change unit.

The supply air SA introduced into the underfloor space 20 from the outside air processing device 40 is likely to be blown out into the living room R through the floor air outlet 11 near the air supply inlet 21 to the underfloor space 20, and the supply air is introduced into the living room R. It tends to be difficult to reach the floor air outlet 11 that is far from the mouth 21. Therefore, the floor blower device 10 provided at each floor blower outlet 11 is provided with a floor blower fan 13 that blows air from the underfloor space 20 toward the inside of the living room R and can change the amount of air flow in stages. It is being With this, regardless of the distance from the air supply inlet 21 to the underfloor space 20, the air supply SA can be blown out at a desired air volume at the plurality of floor air outlets 11.

As described above, this air conditioning system supplies the air supply SA introduced into the underfloor space 20 from the outside air processing device 40 through the plurality of floor outlet ports 11 distributed on the floor 2 into the living room R on the floor 2. It is structured so that it blows out. In this air conditioning system, when the introduced air volume of the supply air SA, which is outside air, is reduced due to reasons such as a small number of people M in the room R, multiple floors distributed on the floor 2 are The air volume of the air supply SA at each of the surface air outlets 11 decreases, and as a result, fresh outside air is provided to each resident M working in the room R from the floor air outlets 11 located in the vicinity. (Air supply SA) decreases, and there is a concern that the comfort and intellectual productivity of the person M in the room will decrease.
Therefore, this air conditioning system is configured to prevent a decrease in the comfort and intellectual productivity of the occupant M in the room R while improving energy saving performance.The details are shown in Figure 1. Explanation will be added below with reference to FIG.
In FIG. 1, an area where a person M exists, such as the area on the left, is called a manned area Aa, and a floor air outlet 11 facing the manned area Aa is called a manned area floor air outlet 11a. On the other hand, in FIG. 1, an area where no occupant M exists, such as the area on the right, is called an unmanned area Ab, and a floor outlet 11 facing the unmanned area Ab is called an unmanned area floor outlet 11b. Further, in FIG. 2, areas A1, A3, and A5 are manned areas Aa, and other areas A2, A4, and A6 are unmanned areas Ab.

The control device 50 provided in this air conditioning system is configured to function as a blowout air volume balance control section 53 that executes predetermined blowout air volume balance control.
In this blowout air volume balance control, the detection results of the occupant distribution detection unit 52 that detects the distribution state of the occupants M in the room R using the human sensor 5 are acquired, and based on the detection results, each area is Motor dampers 12 provided at the floor air outlets 11 of A1 to A6 are controlled to open and close. Then, the motor damper 12 of the manned area floor outlet 11a facing the manned area Aa is opened, and the motor damper 12 of the unmanned area floor outlet 11b facing the unmanned area Ab is closed. The amount of air blown out from the surface outlet 11a is set to be larger than the amount of air blown out from the unmanned area floor outlet 11b.
In each floor outlet 11 shown in FIGS. 1 and 2, if the motor damper 12 is a manned area floor outlet 11a that is opened, the motor damper 12 portion is shown in white, and the motor damper 12 is shown in white. When the damper 12 is the unmanned area floor air outlet 11b that is closed, the motor damper 12 portion is indicated by dotted mesh.

By executing such blowout air volume balance control, even if the air volume of the supply air SA introduced from the outside air processing device 40 to the underfloor space 20 is reduced and energy saving is improved, the living room R A sufficient amount of fresh outside air (supply air SA) is effectively provided to each occupant M working in the room from the manned area floor outlet 11a existing in the vicinity, and the occupant M is Declines in comfort and intellectual productivity are prevented.
Furthermore, in this blowout air volume balance control, the motor damper 12 of the unmanned area floor outlet 11b is closed, and the unnecessary blowing of the supply air SA (outside air) from the unmanned area floor outlet 11b into the living room R is stopped. Therefore, the amount of introduced air SA from the outside air processing device 40 is reduced as much as possible, and further energy saving is achieved.

The control device 50 provided in this air conditioning system stops the floor blower fan 13 of the unmanned area floor outlet 11b facing the unmanned area Ab, and also stops the floor fan 13 of the unmanned area floor outlet 11b facing the manned area Aa. It is configured to function as a floor blower fan control section 54 that operates the blower fan 13 .
The floor fan control unit 54 stops the floor fan 13 of the unmanned area floor outlet 11b facing the unmanned area Ab, and stops the floor fan 13 of the manned area floor outlet 11a facing the manned area Aa. Executes total airflow setting control that activates. In this total air volume setting control, the total air volume of the floor fan 13 of the manned area floor outlet 11a is maintained approximately equal to the air volume of the supply air SA introduced from the outside air processing device 40 into the underfloor space 20. It is set according to the relevant introduced air volume.

By executing such total air volume setting control, even if, for example, the air volume of the supply air SA introduced into the underfloor space 20 decreases and the static pressure of the underfloor space 20 decreases, the underfloor space 20 is The introduced air supply SA is actively blown out into the living room R by the floor blower fan 13 of the manned area floor outlet 11a. In addition, since the floor blower fan 13 of the manned area floor outlet 11a is operated at an output corresponding to the introduced air volume of the air supply SA, the floor blower fan 13 is operated at an appropriate output. Deterioration of energy saving performance due to excessive increase in output is suppressed.

In addition, when a plurality of floor fans 13 are operated, the floor fan control unit 54 controls each of the operating floor fans disposed in the manned area Aa in addition to the above-mentioned total air volume setting control. Individual air blowing amount setting control for controlling the individual outputs of the blowing fans 13 is executed. For example, in the present embodiment, in this individual air blowing amount setting control, the individual air blowing amount of each of the floor surface ventilation fans 13 in operation is the total air blowing amount that corresponds to the airflow amount of the supply air SA introduced into the underfloor space 20. The amount of air blown is set to be equal by dividing the amount by the number of floor fans 13 in operation.

[Another embodiment]
Other embodiments of the present invention will be described. Note that the configurations of each embodiment described below are not limited to being applied individually, but can also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, in the individual air blowing amount setting control, the individual air blowing amounts of the respective operating floor fans 13 arranged in the manned area Aa are set to equal air blowing amounts. It can also be set according to the situation of each manned area Aa where the area Aa is installed, and a specific example thereof will be explained below.
The room occupant distribution detection unit 52 is configured to be able to detect the number of occupants M in the installation target area using the human sensors 5 provided in each of the plurality of areas A1 to A6.
In each of the plurality of manned areas Aa, the floor blower fan control unit 54 controls the individual airflow of the operating floor blower fan 13 disposed in the manned area Aa in the individual airflow setting control. It is set according to the number of people M in the room detected by the room occupant distribution detection unit 52.
By executing such individual air blowing amount setting control, the fresh outside air (supply air SA) is provided to each of the occupants M in the manned area Aa in just the right amount. Therefore, while the decline in the comfort and intellectual productivity of the person M in the room R is suppressed, the amount of air introduced into the air supply SA from the outside air processing device 40 is reduced as much as possible, further improving energy savings. is planned.

(2) In the present embodiment, the occupant distribution detection unit 52 is configured to detect the distribution state of the occupants M in the room R using the human sensor 5, but for example, the inside of the room R is imaged. The distribution of the people M in the room may be detected using a means other than the human sensor 5, such as by analyzing the captured image data obtained by the sensor.

(3) In the above embodiment, the carbon dioxide concentration sensor 6 was provided to detect the carbon dioxide concentration of the return air RA taken in from inside the living room R as the air quality of the exhaust air from inside the living room R. may be configured to detect air quality by other means. For example, the total number of people M in the room R is measured by image analysis of captured image data obtained by imaging the inside of the room R, and the carbon dioxide concentration is calculated from the measured total number of people M in the room R. The above air quality can be predicted.
In the above embodiment, the introduction air volume control unit 51 introduces the supply air SA from the outside air processing device 40 to the underfloor space 20 so that the carbon dioxide concentration detected by the carbon dioxide concentration sensor 6 is maintained at the target carbon dioxide concentration. Although the air volume is controlled, the air supply SA to the underfloor space 20 may be controlled based on an index related to air quality other than the carbon dioxide concentration, such as the temperature and humidity of the exhaust air from inside the living room R. It may be configured to control the amount of introduced air.

(4) In the above embodiment, the floor air outlet 11 can be opened and closed as an individual air volume changer that can individually change the air volume of the supply air SA into the living room R at each of the plurality of floor air outlets 11. Although a motor damper 12 is provided at each floor outlet 11, the motor damper 12 may be replaced with another type of damper device. In addition, the floor blower fan 13 provided at the floor outlet 11 is configured to be able to reduce the volume of the air supply SA blown from the floor outlet 11 into the living room R as the rotation speed decreases. In this case, the number of revolutions of the floor blower fan 13 is changed, and the air volume of the air supply SA into the living room R from each of the plurality of floor air outlets 11 is changed individually. I don't mind.

(5) In the above embodiment, the floor blower fan 13 is provided at the floor outlet 11, but the floor blower fan 13 may be omitted as appropriate. In this case, the amount of air blown out of the air supply SA at the floor outlet 11 can be adjusted by changing the output of the floor blower fan 13 by switching the motor damper 12 open/close or adjusting the opening degree.

(6) In the above embodiment, the blowout air volume balance control section 53 and the floor blower fan control section 54 are provided, but these may be modified or omitted as appropriate.

2 Floor surface 5 Human sensor 6 Carbon dioxide concentration sensor (air quality detection section)
11 Floor outlet 11a Manned area floor outlet 11b Unmanned area floor outlet 12 Motor damper 13 Floor fan 20 Underfloor space 40 Outside air processing device (outside air introduction section)
51 Introduced air volume control unit 52 Occupant distribution detection unit 53 Outflow air volume balance control unit 54 Floor blower fan control unit A1 Area A2 Area A3 Area A4 Area A5 Area A6 Area Aa Manned area Ab Unmanned area M Occupant R Room SA Air supply (outside air)

Claims (5)

Multiple floor air outlets distributed on the floor of the living room,
an outside air introduction part that introduces outside air into an underfloor space in which the plurality of floor air outlets communicate;
An air conditioning system comprising: an introduction air volume control unit that controls an introduction air volume of outside air from the outside air introduction unit to the underfloor space according to a state inside the living room,
a room occupant distribution detection unit capable of detecting a distribution state of occupants in the living room;
a blowout air volume individual change unit capable of individually changing the blowout volume of outside air into the living room at each of the plurality of floor surface air outlets;
The airflow individual change unit is controlled based on the detection result of the occupant distribution detection unit to adjust the airflow rate to the manned area floor air outlet, which is the floor air outlet facing the manned area where the occupants exist in the living room. a blowout air volume balance control unit that sets the blowout airflow volume of outside air from the outlet to be larger than the blowout airflow volume of outside air from the unmanned area floor outlet, which is the floor outlet facing an uninhabited area where no occupant is present in the living room; , comprising ;
comprising an air quality detection unit that detects the air quality of exhaust air from the living room,
The introduction air volume control section controls the introduction air volume of outside air from the outside air introduction section to the underfloor space so that the air quality detected by the air quality detection section is maintained at a target air quality;
Each of the plurality of floor air outlets is provided with a floor fan that blows air from the underfloor space into the living room,
a floor blower fan control unit that stops a floor blower fan of the unmanned area floor outlet and operates a floor blower fan of the manned area floor outlet;
The floor ventilation fan control unit sets the total airflow volume of the floor ventilation fan of the manned area floor outlet to the volume of outside air introduced into the underfloor space from the outside air introduction unit controlled by the introduction air volume control. An air conditioning system that executes control to set the total airflow volume to approximately the same level . The outside air processing device is configured as a ventilation device in which the outside air introduction section supplies the outside air taken in from outside to the underfloor space as supply air while exhausting the return air taken in from the living room to the outside as exhaust air,
The air conditioning system according to claim 1, further comprising an air conditioner that cools or heats air taken in from a living room to generate conditioned air, and blows out the conditioned air into the living room, separately from the outside air processing device. The individual blowout air volume changing unit is configured with a damper that is provided at each of the plurality of floor air outlets and can open and close the floor air outlet,
The air conditioning system according to claim 1 or 2, wherein the blowout air volume balance control section opens a damper of the manned area floor air outlet and closes a damper of the unmanned area floor air outlet. The floor surface ventilation fan control unit executes individual ventilation amount setting control for controlling individual outputs of the respective operating floor ventilation fans arranged in the manned area, and in the individual ventilation amount setting control, According to any one of claims 1 to 3, the air flow rate of each of the floor fans in operation is set to a uniform air flow rate obtained by dividing the amount of outside air introduced into the underfloor space by the number of the floor fans in operation. The air conditioning system according to any one of the items above. The room occupant distribution detection unit is configured to be able to detect the number of people in the room in the manned area,
In each of the plurality of manned areas, the floor fan control unit adjusts the output of the floor fan of the manned area floor outlet to the number of people in the room detected by the person distribution detection unit. The air conditioning system according to any one of claims 1 to 3, wherein the air conditioning system performs individual air blowing amount setting control that is set accordingly.

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