JP2021071235A - Air conditioning system - Google Patents

Abstract

To provide a technique capable of preventing comfort and intellectual productivity of an occupant in a habitable room from being lowered while improving energy saving performance in an air conditioning system which takes external air into an underfloor space through an external air introduction section and blows the external air into the habitable room above a floor through a plurality of floor vents.SOLUTION: An air conditioning system comprises: an occupant distribution detection section 52 capable of detecting a distribution state of an occupant M in a habitable room R; an air flow rate individual changing section 12 capable of individually changing flow rates of external air SA blown into the habitable room through a plurality of floor vents 11; and an air flow rate balance control section 53 for controlling the air flow rate individual changing section 12 on the basis of a detection result of the occupant distribution detection section 52 in a manner that makes a flow rate of the external air blown through the floor vent 11 facing an area with the occupant larger than the same through the floor vent 11 facing an area without the occupant.SELECTED DRAWING: Figure 1

Description

In the present invention, a plurality of floor surface outlets distributed on the floor surface of a living room, an outside air introduction unit that introduces outside air into an underfloor space in which the plurality of floor surface outlets communicate with each other, and an outside air introduction unit from the outside air introduction unit to the floor The present invention relates to an air conditioning system including an introduction air volume control unit that controls the introduction air volume of outside air into a space according to the state of the living room.

Energy saving and comfort in an air conditioning system that blows out the outside air introduced into the underfloor space from the outside air introduction part such as an outside air treatment device into the living room on the floor through multiple floor air outlets distributed on the floor. For the purpose of achieving both, for example, the amount of air introduced from the outside air introduced from the outside air introduction unit may be controlled according to the state of air quality such as the CO2 concentration in the living room (see, for example, Patent Document 1). Further, in the air conditioning system of Patent Document 1, the presence or absence of occupants and the number of occupants in the entire living room are detected, and the introduced air volume of the outside air is controlled in consideration of the detection result.

Japanese Unexamined Patent Publication No. 2015-13777

However, in such an air conditioning system, when the introduced air volume of the outside air is reduced due to a small number of people in the living room or the like, in each of the plurality of floor air outlets dispersedly formed on the floor surface, The amount of air blown out from the outside air decreases. In this case, the quality of the carbon dioxide concentration of the exhaust gas discharged from the living room does not deteriorate, but it is provided to each occupant who is active in the living room from the floor outlet existing in the vicinity thereof. There is a concern that the amount of fresh outside air will decrease, and for example, the comfort and intellectual productivity of the occupants will decrease.

In view of this situation, the main subject of the present invention is to introduce the outside air introduced into the underfloor space from the outside air introduction part such as the outside air treatment device through the plurality of floor surface outlets dispersedly formed on the floor surface into the living room on the floor surface. The point is to provide a technology that can prevent a decrease in comfort and intellectual productivity of the occupants in the living room while improving energy saving in the air-conditioning system that blows out.

The first characteristic configuration of the present invention includes a plurality of floor surface outlets dispersedly arranged on the floor surface of the living room.
An outside air introduction unit that introduces outside air into the underfloor space in which the plurality of floor outlets communicate with each other.
An air conditioning system including an introduction air volume control unit that controls the introduction air volume of outside air from the outside air introduction unit to the underfloor space according to the state of the living room.
An occupant distribution detection unit that can detect the distribution state of occupants in the living room,
An individual change unit for the amount of air blown out to the living room at each of the plurality of floor outlets, and a unit for individually changing the amount of air blown out to the living room.
Based on the detection result of the occupant distribution detection unit, the blowout air volume individual change unit is controlled to face the manned area where the occupants are present in the living room. With the blowout air volume balance control unit that sets the blowout air volume of the outside air at the outlet to be larger than the blowout air volume of the outside air of the floor surface outlet, which is the unmanned area floor outlet facing the unmanned area where no occupants exist in the living room. , Is provided.

According to this configuration, even when the amount of outside air introduced from the outside air introduction section to the underfloor space is reduced to improve energy saving due to a small number of people in the living room or the like, the above-mentioned blowout is performed. The air volume balance control unit makes it possible to set the amount of outside air blown out from the manned area floor outlet to be larger than the amount of outside air blown out from the unmanned area floor outlet. As a result, it is possible to effectively provide a sufficient amount of fresh outside air to each occupant who is active in the living room from the floor outlet of the manned area existing in the vicinity thereof.
Therefore, according to the present invention, in an air conditioning system that blows out outside air introduced into an underfloor space from an outside air introduction portion such as an outside air treatment device into a living room on the floor surface through a plurality of floor surface outlets dispersedly formed on the floor surface. It is possible to provide a technology that can prevent a decrease in comfort and intellectual productivity of a resident in a living room while improving energy saving.

The second characteristic configuration of the present invention includes an air quality detection unit that detects the air quality of the exhaust gas from the living room.
The point is that the introduced air volume control unit controls the introduced air volume of the outside air from the outside air introduction unit to the underfloor space so that the air quality detected by the air quality detecting unit is maintained at the target air quality.

According to this configuration, while maintaining the air quality of the exhaust gas from the living room detected by the air quality detection unit at the target air quality, the introduction air volume control unit reduces the introduction air volume of the outside air from the outside air introduction unit. Therefore, improvement in energy saving can be realized.

The third characteristic configuration of the present invention is composed of a damper capable of opening and closing the floor surface outlet by providing the blowout air volume individual changing portion at each of the plurality of floor surface outlets.
The point is that the blowout air volume balance control unit 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 dampers are provided in each of the plurality of floor air outlets, the blowout air volume individual changing unit opens and closes these dampers individually to provide outside air in each of the plurality of floor air outlets. It is possible to individually change the amount of outside air blown out at each of the plurality of floor surface outlets by switching the presence or absence of the blowout.
Then, the blowout air volume balance control unit opens the damper of the floor outlet of the manned area near the occupant to blow out the outside air from the floor outlet of the occupant to the occupant, and then blows out the outside air to the occupant. While preventing a decrease in the comfort and intellectual productivity of the person, the damper of the unmanned area floor outlet is closed to stop the useless outside air from being blown from the unmanned area floor outlet to the living room. It is possible to contribute to the improvement of energy saving by reducing the amount of air introduced from the outside air introduction section.

The fourth characteristic configuration of the present invention includes a floor blower fan for blowing air from the underfloor space toward the living room at each of the plurality of floor air outlets.
The floor blower fan of the unmanned area floor outlet is stopped, the floor blower fan of the manned area floor outlet is operated, and the total air blower of the floor blower fan of the manned area floor outlet is calculated. The point is that it is provided with a floor surface blower fan control unit that controls the total air flow amount setting according to the amount of outside air introduced from the outside air introduction unit to the underfloor space.

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 air outlet near the introduction point of the outside air into the underfloor space, and reaches the floor air outlet far from the introduction point. It tends to be difficult.
Therefore, according to this configuration, since the floor blower fan is provided at each of the plurality of floor air outlets, these multiple floor blowers are provided regardless of the distance from the introduction point of the outside air into the underfloor space. The outside air can be blown out at the outlet with a desired amount of blown air.
Further, the floor blower fan control unit stops the floor blower fan at the floor air outlet in the unmanned area and operates the floor blower fan at the floor air outlet in the manned area, so that, for example, the outside air to the underfloor space is released. Even if the static pressure of the underfloor space is reduced by reducing the introduced air volume, the outside air introduced into the underfloor space should be actively blown into the living room by the floor blower fan at the floor outlet of the manned area. Can be done.
In addition, the floor blower fan control unit executes the total blower volume setting control to set the total blower volume of the floor blower fan at the floor outlet of the manned area according to the amount of outside air introduced into the underfloor space. Therefore, the floor blower fan can be operated with an output corresponding to the introduced air volume of the outside air. As a result, it is possible to suppress deterioration of energy saving due to operation of the floor blower fan due to excessive output.

The fifth characteristic configuration of the present invention is such that the occupant distribution detection unit can detect the number of occupants in the manned area.
The floor blower fan control unit outputs the output of the floor blower fan at the floor outlet of the manned area to the number of occupants detected by the occupant distribution detection unit in each of the plurality of manned areas. The point is to control the individual air flow amount setting according to the setting.

According to this configuration, the floor blower fan control unit executes the individual blower amount setting control, and the output of the floor blower fan of the manned area floor outlet is directed by the manned area floor outlet. It can be set according to the number of occupants in the area to provide fresh outside air to each occupant in the manned area without excess or deficiency. As a result, while suppressing the decrease in comfort and intellectual productivity of the occupants in the living room, the amount of outside air introduced from the outside air introduction part is reduced as much as possible to further improve energy saving. Can be done.

The figure which shows the schematic structure of the air-conditioning system of this embodiment. The figure which shows the arrangement state of a floor air outlet and a motion sensor in a living room in a plan view.

An embodiment of the air conditioning system according to the present invention will be described with reference to 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 surface outlets 11 dispersedly arranged on the floor surface 2 of the living room R, and a plurality of floor surface outlets 11. An outside air treatment device 40 (an example of an outside air introduction unit) for introducing a supply air SA which is the treated outside air is provided in the communicating underfloor space 20. Then, this air conditioning system is a system that blows out air supply SA introduced from the outside air treatment device 40 into the underfloor space 20 into the living room R on the floor surface 2 through a plurality of floor surface outlets 11 dispersedly formed on the floor surface 2. It is configured as.
Further, a control device 50 that functions as an introduction air volume control unit 51 or the like that controls the introduction air volume of the air supply SA from the outside air treatment device 40 to the underfloor space 20 according to the state in the living room R is provided.

An underfloor space 20 is formed under the floor surface 2 of the living room R. The underfloor space 20 is provided with an air supply introduction port 21 for blowing out the supply air SA supplied from the outside air treatment device 40. The air supply SA introduced into the underfloor space 20 from the air supply introduction port 21 is appropriately blown into the living room R through the floor surface outlet 11.

A variable air volume unit 22 is provided in the passage of the air supply SA leading from the outside air processing device 40 to the air supply introduction port 21. The variable air volume unit 22 is configured so that the air supply air volume introduced into the underfloor space 20 can be measured as the air supply air volume, and the damper opening degree can be adjusted to set the air supply air volume to a desired target air volume. There is.

A ceiling space 30 is formed on the ceiling surface 3 of the living room R. The ceiling space 30 is provided with a return air discharge port 35 that takes in the return air RA supplied to the outside air treatment device 40. A return air fan 31 is provided in the ceiling space 30. The return air fan 31 is configured to take in the air in the living room R from the return air intake port 31a provided in the living room R, and to introduce the taken-in air into the ceiling space 30 from the return air discharge port 31b. Has been done.
A plurality of vents 4 are provided on the ceiling surface 3. The vent 4 enables air to be taken into the ceiling space 30 from the living room R even when the return air fan 31 is stopped. It should be noted 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 passage of the return air RA leading from the return air discharge port 35 to the outside air treatment device 40. The variable air volume unit 36 is configured to be able to set the return air volume to a desired target air volume by adjusting the damper opening while measuring the intake air volume of the return air RA from the ceiling space 30 as the return air volume. There is.

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

The outside air treatment device 40 discharges the return air RA taken in from the return air discharge port 35 opening in the ceiling space 30 to the outside as an exhaust EA, and uses the energy of the return air RA to take in the outside air OA from the outside. It is configured as a ventilation device that is processed and supplies the treated outside air OA as an air supply SA to an air supply introduction port 21 that opens in the underfloor space 20. In the present embodiment, the outside air treatment device 40 is configured to take in the air in the ceiling space 30 as the return air RA from the return air discharge port 35 opening in the ceiling space 30, but the return air is provided on the wall of the living room R or the like. The air in the living room R may be taken in as the return air RA from the air outlet.
Then, 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 treatment device 40 to the underfloor space 20 in a form of changing the target air volume of the variable air volume units 22 and 36. Can be done.

In the return air RA passage leading from the return air discharge port 35 to the outside air treatment device 40, the carbon dioxide concentration of the return air RA taken in from the living room R is directly detected as the air quality of the exhaust gas from the living room R. A concentration sensor 6 (an example of an air quality detection unit) is provided. Then, the introduction air volume control unit 51 in which the control device 50 functions moves from the outside air treatment 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 introduced air volume of the supply air SA (outside air). As a result, when the number of occupants M in the living room R is small, the amount of air supplied by the air supply SA from the outside air processing device 40 to the underfloor space 20 is reduced as much as possible, and energy saving is improved. It will be.

As shown in FIG. 2, a plurality of areas A1 to A6 that are not partitioned by walls or the like exist in the living room R. At least one floor air outlet 11 is arranged in each of the plurality of areas A1 to A6 in a posture facing the installed area. Further, at least one motion sensor 5 for detecting the presence or absence of the occupant M existing in the installation target area is arranged in each of the plurality of areas A1 to A6.
The control device 50 functions as an occupant distribution detection unit 52 that detects the distribution state of the occupants M in the living room R. The occupant distribution detection unit 52 detects the presence or absence of occupants M in each of the plurality of areas A1 to A6 as the distribution state by using the motion sensors 5 provided in each of the plurality of areas A1 to A6. To do.
The motion sensor 5 can also be used for lighting control for appropriately and rationally illuminating the occupant M. Further, as the motion sensor 5, a multi-sensor capable of detecting the illuminance of the installation location in addition to the function of detecting a person can be used.

As shown in FIGS. 1 and 2, each of the plurality of floor surface outlets 11 dispersedly arranged on the floor surface 2 is provided with a floor surface outlet device 10, and the control devices 50 are located in areas A1 to A6. The operation of the floor blowing device 10 can be controlled for each operation. Further, the floor blowout device 10 is provided with a motor damper 12 capable of opening and closing the floor blowout port 11. The motor damper 12 is closed by the control device 50 to substantially stop the blowout of the air supply SA from the floor surface outlet 11 into the living room R, and is opened by the control device 50 from the floor surface outlet 11. Allows the air supply SA to blow out into the living room R. That is, the motor dampers 12 provided in each of the plurality of floor air outlets 11 can individually change the air volume of the air supply SA into the living room R in each of the plurality of floor air outlets 11. Functions as a change part.

The air supply SA introduced from the outside air treatment device 40 into the underfloor space 20 is likely to be blown into the living room R through the floor surface outlet 11 near the air supply introduction port 21 to the underfloor space 20, and the air supply is introduced. It tends to be difficult to reach the floor outlet 11 far from the mouth 21. Therefore, the floor blower device 10 provided at each floor blowout port 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 blown stepwise. Has been done. As a result, the supply air SA can be blown out at a desired amount of blown air at the plurality of floor surface outlets 11 regardless of the distance from the air supply introduction port 21 to the underfloor space 20.

As described above, in this air conditioning system, the air supply SA introduced from the outside air treatment device 40 into the underfloor space 20 through the plurality of floor surface outlets 11 dispersedly formed on the floor surface 2 is introduced into the living room R on the floor surface 2. It is configured to blow out. In such an air-conditioning system, when the introduced air volume of the supply air SA, which is the outside air, is reduced because the number of occupants M in the living room R is small, a plurality of floors dispersedly formed on the floor surface 2 are formed. The amount of air blown out by the air supply SA at each of the surface air outlets 11 decreases, and as a result, fresh outside air provided from the floor air outlet 11 existing in the vicinity thereof to each occupant M who is active in the living room R. (Air supply SA) is reduced, and there is a concern that the comfort and intellectual productivity of the occupant M may be reduced.
Therefore, this air-conditioning system is configured to prevent a decrease in comfort and intellectual productivity of the occupant M in the living room R while improving energy saving. The details thereof are shown in FIG. And the following will be added with reference to FIG.
In FIG. 1, an area in which a resident M exists, such as the area on the left side, is referred to as a manned area Aa, and a floor outlet 11 facing the manned area Aa is referred to as a manned area floor outlet 11a. On the other hand, in FIG. 1, an area where no occupant M does not exist, such as the area on the right side, is referred to as an unmanned area Ab, and the floor outlet 11 facing the unmanned area Ab is referred to as 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 the air conditioning system is configured to function as a blowout air volume balance control unit 53 that executes a predetermined blowout air volume balance control.
In this blowout air volume balance control, the detection result of the occupant distribution detection unit 52 that detects the distribution state of the occupants M in the living room R by using the motion sensor 5 is acquired, and each area is based on the detection result. The opening and closing of the motor damper 12 provided at the floor air outlets 11 of A1 to A6 is controlled. 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 air volume of the air supply SA of the surface outlet 11a is set to be larger than the air volume of the air supply SA of the unmanned area floor outlet 11b.
In each of the floor surface outlets 11 shown in FIGS. 1 and 2, when the motor damper 12 is a manned area floor surface outlet 11a in which the motor damper 12 is opened, the motor damper 12 portion is displayed in white and the motor is displayed. When the damper 12 is an unmanned area floor outlet 11b where the damper 12 is closed, the motor damper 12 portion is indicated by dotted shading.

By executing such blowout air volume balance control, even when the introduction air volume of the air supply SA 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 from the floor outlet 11a of the manned area existing in the vicinity to each occupant M who is active in the room, and the occupant M is provided with a sufficient amount of fresh outside air (air supply SA). The loss of comfort and intellectual productivity is prevented.
Further, in this blowout air volume balance control, the motor damper 12 of the unmanned area floor air outlet 11b is closed, and the useless air supply SA (outside air) blown out from the unmanned area floor air outlet 11b into the living room R is stopped. Therefore, the amount of air introduced by the air supply SA from the outside air treatment device 40 is reduced as much as possible, and further improvement in 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 blower fan 13 of the unmanned area floor outlet 11b, and also stops the floor surface of the manned area floor outlet 11a facing the manned area Aa. It is configured to function as a floor blower fan control unit 54 that operates the blower fan 13.
The floor blower fan control unit 54 stops the floor blower fan 13 of the unmanned area floor outlet 11b facing the unmanned area Ab, and also stops the floor blower fan 13 of the manned area floor outlet 11a facing the manned area Aa. Executes the total air volume setting control to operate. In this total air volume setting control, the total air volume of the floor air blower fan 13 of the manned area floor air outlet 11a is maintained to be substantially equal to the air volume introduced by the air supply SA from the outside air treatment device 40 to the underfloor space 20. It is set according to the introduced air volume.

By executing such total air volume setting control, for example, even when the introduced air volume of the air supply SA into the underfloor space 20 decreases and the static pressure of the underfloor space 20 decreases, the underfloor space 20 is provided. The introduced air supply SA is positively blown into the living room R by the floor blower fan 13 of the manned area floor air outlet 11a. Further, since the floor blower fan 13 of the manned area floor blowout port 11a is operated with an output corresponding to the introduced air volume of the air supply SA, the floor blower fan 13 is operated with an appropriate output. Deterioration of energy saving due to an excessive increase in output will be suppressed.

Further, when a plurality of floor surface blower fans 13 are operated, the floor surface blower fan control unit 54, in addition to the above-mentioned total air blower amount setting control, is arranged in the manned area Aa and is arranged on each of the operating floor surfaces. The individual blower amount setting control for controlling the individual output of the blower fan 13 is executed. For example, in the present embodiment, in this individual air volume setting control, the individual air volume of each operating floor air blower fan 13 corresponds to the total air volume of the air supply SA introduced into the underfloor space 20. Is set to an even amount of air blown by dividing by the number of floor blower fans 13 in operation.

[Another Embodiment]
Other embodiments of the present invention will be described. It should be noted that the configurations of the respective embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

(1) In the above-described embodiment, in the above-mentioned individual air-blowing amount setting control, the individual air-blowing amount of each operating floor blower fan 13 arranged in the manned area Aa is set to an even air-blowing amount. It can also be set according to the situation of each manned area Aa where is installed, and a specific example thereof will be described below.
The occupant distribution detection unit 52 is configured to be able to detect the number of occupants M in the installation target area by using motion sensors 5 provided in each of the plurality of areas A1 to A6.
Then, in the individual blower amount setting control, the floor blower fan control unit 54 sets the individual blower amount of the operating floor blower fan 13 arranged in the manned area Aa in each of the plurality of manned areas Aa. It is set according to the number of occupants M detected by the occupant distribution detection unit 52.
By executing such individual air flow amount setting control, fresh outside air (air supply SA) is provided to each of the occupants M in the manned area Aa without excess or deficiency. Therefore, while suppressing the decrease in comfort and intellectual productivity of the occupant M in the living room R, the amount of air supplied by the air supply SA from the outside air treatment device 40 is reduced as much as possible, further improving energy saving. 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 living room R by using the motion sensor 5. For example, the inside of the living room R is imaged. The distribution of the occupants M may be detected by using a means different from the motion sensor 5, such as analyzing the captured image data obtained in the above.

(3) In the above embodiment, the carbon dioxide concentration sensor 6 for detecting the carbon dioxide concentration of the return air RA taken in from the living room R as the air quality of the exhaust gas from the living room R is provided. May be configured to detect air quality by other means. For example, the total number of occupants M in the living room R is measured by image analysis of the captured image data obtained by imaging the inside of the living room R, and the carbon dioxide concentration and the like are obtained from the measured total number of occupants M. The above air quality can be predicted.
In the above embodiment, the introduction air volume control unit 51 introduces the air supply SA from the outside air treatment 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 it is configured to control the air volume, the air supply SA to the underfloor space 20 is based on an index related to air quality different from the carbon dioxide concentration, such as the temperature and humidity state of the exhaust gas from the living room R. It may be configured to control the introduced air volume.

(4) In the above embodiment, the floor air outlet 11 can be opened and closed as an individual change unit for the air volume of the air supply SA into the living room R of each of the plurality of floor air outlets 11. Although the motor damper 12 is provided at each floor air outlet 11, the motor damper 12 may be changed to another type of damper device. Further, the floor blower fan 13 provided at the floor outlet 11 has a configuration capable of reducing the amount of air blown from the air supply SA from the floor outlet 11 into the living room R as the rotation speed decreases. In this case, the number of rotations of the floor blower fan 13 is changed, and the amount of air blown out by the air supply SA into the living room R at each of the plurality of floor air outlets 11 is individually changed. It doesn't matter.

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

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

2 Floor surface 5 Motion sensor 6 Carbon dioxide concentration sensor (air quality detector)
11 Floor air outlet 11a Manned area Floor air outlet 11b Unmanned area Floor air outlet 12 Motor damper 13 Floor blower fan 20 Underfloor space 40 Outside air treatment device (outside air introduction part)
51 Introduced air volume control unit 52 Vacancy distribution detection unit 53 Blow-out 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 Room resident R Living room SA Air supply (outside air)

Claims (5)

Multiple floor outlets distributed on the floor of the living room,
An outside air introduction unit that introduces outside air into the underfloor space in which the plurality of floor outlets communicate with each other.
An air conditioning system including an introduction air volume control unit that controls the introduction air volume of outside air from the outside air introduction unit to the underfloor space according to the state of the living room.
An occupant distribution detection unit that can detect the distribution state of occupants in the living room,
An individual change unit for the amount of air blown out to the living room at each of the plurality of floor outlets, and a unit for individually changing the amount of air blown out to the living room.
Based on the detection result of the occupant distribution detection unit, the blowout air volume individual change unit is controlled to face the manned area where the occupants are present in the living room. With the blowout air volume balance control unit that sets the blowout air volume of the outside air at the outlet to be larger than the blowout air volume of the outside air of the floor surface outlet in the unmanned area, which faces the unmanned area where no occupants exist in the living room. , Equipped with air conditioning system. It is equipped with an air quality detection unit that detects the air quality of the exhaust gas from the living room.
The first aspect of claim 1, wherein the introduced air volume control unit controls the introduced air volume of the outside air from the outside air introduction unit to the underfloor space so that the air quality detected by the air quality detection unit is maintained at the target air quality. Air conditioning system. The blowout air volume individual change portion is provided in each of the plurality of floor surface outlets, and is composed of a damper capable of opening and closing the floor surface outlet.
The air conditioning system according to claim 1 or 2, wherein the blowout air volume balance control unit opens the damper of the manned area floor air outlet and closes the damper of the unmanned area floor air outlet. Each of the plurality of floor air outlets is provided with a floor blower fan that blows air from the underfloor space toward the living room.
The floor blower fan of the unmanned area floor outlet is stopped, the floor blower fan of the manned area floor outlet is operated, and the total air flow amount of the floor blower fan of the manned area floor outlet is calculated. The air conditioning system according to any one of claims 1 to 3, further comprising a floor surface blower fan control unit that controls the total air flow amount setting according to the amount of outside air introduced from the outside air introduction unit to the underfloor space. The occupant distribution detection unit is configured to be able to detect the number of occupants in the manned area.
The floor blower fan control unit outputs the output of the floor blower fan at the floor outlet of the manned area to the number of occupants detected by the occupant distribution detection unit in each of the plurality of manned areas. The air conditioning system according to claim 4, wherein the individual air volume setting control is set accordingly.

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