JP2023092085A - air conditioning system - Google Patents

Abstract

To provide an air conditioning system capable of suppressing the occurrence of dew condensation in an adjacent space where an air conditioner is installed.SOLUTION: The air conditioning system according to this invention includes an air conditioner 10 installed in an adjacent space K adjacent to a ceiling wall C above the ceiling wall C of a building B, an inlet duct 12 for forming a flow path for air to flow to the air conditioner 10, an opening part 16 formed in the ceiling wall C and communicated with a housing space R1 located on the opposite side to the adjacent space K across the ceiling wall C, and take-in equipment 20 for taking in air through an air intake port 22 communicated with the adjacent space K.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system, and more particularly to an air conditioning system for suppressing dew condensation in a space above a ceiling wall and adjacent to the ceiling wall in a building.

In a building, an air conditioner may be set up in a space adjacent to the ceiling wall above the ceiling wall (hereinafter referred to as the adjacent space), and the air whose temperature and humidity have been adjusted by the air conditioner may be sent to a predetermined space in the building. (See Patent Document 1, for example).

In the building described in Patent Document 1, an air conditioner is installed in the space above the ceiling on the first floor, more specifically, in the inter-floor space between the ceiling on the first floor and the floor on the second floor. , living room space, etc. in the building.

JP-A-2000-291977

By the way, depending on the arrangement of equipment and building materials in the adjacent space, it becomes difficult to ventilate the adjacent space. In this case, during cooling operation of the air conditioner, dew condensation may occur in the air conditioner main body and the pipelines, ducts, and the like arranged around the main body of the air conditioner in the adjacent space.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and its object is to provide an air conditioning system capable of suppressing the occurrence of dew condensation in an adjacent space where an air conditioner is installed. It is to be.

According to the air conditioning system of the present invention, in a building, an air conditioner is installed in an adjacent space above the ceiling wall and adjacent to the ceiling wall, and an air flow toward the air conditioner is provided. Air is supplied through a duct that forms a path, an opening that is formed in the ceiling wall and communicates with a space located on the opposite side of the ceiling wall from the adjacent space, and an intake port that is attached to the duct and communicates with the adjacent space. and a capture device for capturing.

In the air conditioning system of the present invention configured as described above, air enters the adjacent space through the opening, and the air passing through the opening is taken into the intake device. By generating such an air flow in the adjacent space, it is possible to prevent the adjacent space from becoming highly humid, and as a result, the occurrence of dew condensation in the adjacent space can be suppressed satisfactorily.

Further, in the air conditioning system described above, the ceiling provided in the building may have a plurality of portions having different positions on the lower surface of the ceiling. In this case, it is preferable that the air conditioner is installed in the adjacent space adjacent to the ceiling wall forming the low-ceiling portion having the lower lower surface among the plurality of portions.
According to the above configuration, it is possible to satisfactorily suppress the occurrence of dew condensation in the adjacent space located above the so-called lowered ceiling.

Further, in the above air conditioning system, in a building having a plurality of floors, the adjacent spaces are a first space located between adjacent floors and a first space located between the first space and the ceiling wall in the vertical direction. It may be divided into two spaces. In this case, it is more favorable if the air conditioner is installed in the second space and the intake is arranged in the first space.
According to the above configuration, when the air conditioner and the intake device are arranged in the same space (for example, the second space), it is possible to avoid the situation where the space becomes large.

Further, in the air conditioning system described above, it is more preferable that the opening and the take-in are located on opposite sides of each other with the air conditioner interposed therebetween in the vertical direction.
According to the above configuration, the air around the air conditioner can be easily replaced with the air taken in from the opening, thereby more effectively suppressing the occurrence of dew condensation around the air conditioner.

Further, in the air conditioning system described above, it is even more preferable that the opening and the intake are horizontally opposite to each other with the air conditioner interposed therebetween.
According to the above configuration, the air around the air conditioner can be easily replaced with the air taken in from the opening, thereby more effectively suppressing the occurrence of dew condensation around the air conditioner.

Further, in the air conditioning system described above, it is more preferable that the intake device is a suction box installed in the middle of the duct and forms a part of the flow path.
According to the above configuration, the air in the adjacent space, especially the air around the suction box can be taken in appropriately.

Further, in the air conditioning system described above, it is even more preferable if a ceiling louver is fitted in the opening.
According to the above configuration, it is possible to prevent the inside of the adjacent space from being seen through the opening from below the ceiling wall.

Further, in the air conditioning system described above, the ceiling provided in the building may have a plurality of portions having different positions on the lower surface of the ceiling. In this case, the opening is formed at one end of the low-ceiling portion having a lower lower surface position among the plurality of portions, and the intake device is positioned horizontally at the one end of the low-ceiling portion more than the one end of the low-ceiling portion. It is even more preferable if it is arranged at a position close to the other end on the opposite side.
According to the above configuration, it is possible to ensure a longer air movement path from the opening to the intake device, so it is possible to further effectively suppress the occurrence of dew condensation around the air conditioner.

Further, in the above air conditioning system, the duct is an intake duct connected to an air conditioner, and further includes an air supply duct connected to the air conditioner and forming a flow path for air discharged from the air conditioner. It is even more preferable if the end of the duct is connected to another space adjacent to the space located on the opposite side of the adjacent space across the ceiling wall.
According to the above configuration, the air discharged from the air conditioner installed in the adjacent space can be appropriately supplied to the supply destination, and the occurrence of dew condensation in the adjacent space can be appropriately suppressed.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the air-conditioning system which can suppress generation|occurrence|production of dew condensation within the adjacent space in which the air conditioner was installed.

It is an explanatory view about an air-conditioning system concerning one embodiment of the present invention. It is a figure which shows the external appearance of a capture device. FIG. 3 is a schematic plan view showing the arrangement positions of an air conditioner, an opening, and a take-in device; It is a figure which shows the flow of the air in adjacent space. It is a figure which shows the structure of the conventional air-conditioning system. It is explanatory drawing about the air-conditioning system which concerns on the modification of this invention.

<<Regarding the air conditioning system according to one embodiment of the present invention>>
One embodiment of the present invention (hereinafter referred to as the present embodiment) will be described below with reference to the accompanying drawings. In addition, in the drawings, each member is illustrated in a somewhat simplified and schematic manner for the sake of easy understanding of the explanation. Also, the size (dimension) of each member shown in the drawing, the spacing between members, etc. are different from the actual ones.

The air conditioning system according to the present embodiment (hereinafter simply referred to as the air conditioning system S) is used in a building B having a structure having a plurality of floors. corridors, etc.) with temperature- and humidity-controlled air. The building B in which the air-conditioning system S is used may be a residence (including one for rent), or a building constructed for non-residential purposes such as an office, a building, or a store.
In addition, below, the two-story building B is mentioned as an example and demonstrated on account of description. However, the number of floors that building B has is not particularly limited.

The structure of building B will be explained with reference to FIG. 1. There are a plurality of living spaces including two living spaces R1 and R2 on the first floor. The two living spaces R1 and R2 are spaces adjacent to each other with a wall W therebetween. in the living room. The living space R2 corresponds to another space of the present invention.

Further, as shown in FIG. 1, the wall W is provided with ventilation holes H, and the two living spaces R1 and R2 are communicated through the ventilation holes H. As shown in FIG. Here, the two living spaces R1 and R2 are in communication means that the two living spaces R1 and R2 are continuous (that is, they are connected as spaces). It is a state in which air can freely flow into the living space of the house. The two living spaces R1 and R2 communicating with each other may also include a case where a wall or other space intervenes between the two living spaces R1 and R2.

The living space R1 and the living space R2 may not be separated by the wall W. For example, the two living spaces R1 and R2 are spaces existing in the same room. The living space R1 may be located and the living space R2 may be located in the center of the same room.

A ceiling wall C on the first floor is arranged at the upper end of each of the living spaces R1 and R2. Further, as shown in FIG. 1, the ceiling of the first floor has a plurality of portions with different lower surface positions. It is in. That is, among the plurality of portions included in the ceiling of the first floor, the portion corresponding to the ceiling of the living space R1 corresponds to the low ceiling portion Ca, which is a so-called descending ceiling. The position of the lower surface of the ceiling of the living space R1 may be, for example, a position lower than the lower surface of the ceiling of the living space R2 by about 320 mm.

Further, as shown in FIG. 1, an inter-floor space K1 exists between the ceiling of the first floor and the floor of the second floor. The inter-floor space K1 corresponds to a first space located between adjacent floors (that is, first and second floors). In addition, a downward ceiling space K2 exists at a position directly above the ceiling of the living space R1. The lowered ceiling space K2 corresponds to a second space positioned between the inter-floor space K1 and the ceiling wall C (strictly, the portion of the ceiling wall C that corresponds to the ceiling of the living space R1) in the vertical direction. That is, above the living space R1, the downward ceiling space K2 and the inter-floor space K1 are provided in a state in which they are continuously arranged vertically.

Here, the inter-floor space K1 and the downward ceiling space K2 correspond to the adjacent space K located above the ceiling wall C and adjacent to the ceiling wall C in the building B. Further, it can be said that the space K2 in the lowered ceiling is a part of the adjacent space K adjacent to the ceiling wall forming the ceiling of the living space R1 (that is, the low ceiling portion Ca) in the ceiling of the first floor. In other words, the living space R1 is a space located on the opposite side of the adjacent space K (specifically, the space in the lowered ceiling K2) with the ceiling wall C interposed therebetween.

Explaining the configuration of the air conditioning system S, as shown in FIG. and a take-in device 20 provided in the middle of the duct 12 .

The air conditioner 10 is configured by a known air conditioner, and in the present embodiment, for example, is a unit type air conditioner in which all of the components of the air conditioner 10 (equipment other than the housing) are housed in a housing. However, it is not limited to this, and the air conditioner 10 may be divided into an indoor unit and an outdoor unit. As shown in FIG. 1, the air conditioner 10 or the indoor unit of the air conditioner 10 is installed in the adjacent space K, more specifically, in the space K2 in the lowered ceiling. As described above, in the present embodiment, the space K<b>2 in the lowered ceiling is effectively used as an installation space for the air conditioner 10 .

The air intake duct 12 is a duct that forms a flow path for air flowing toward the air conditioner 10, and the end (that is, the downstream end) of the air intake duct 12 is connected to the air conditioner 10 as shown in FIG. It is A part of the air intake duct 12 is laid in the inter-floor space K1, and the downstream end of the air intake duct 12 exists in the lowered ceiling space K2.

Also, the base end (that is, the upstream end) of the air intake duct 12 is connected to an outside air introduction port (not shown) provided on the outer wall of the building B, for example. Further, when the air sucked through a range hood, ventilation fan, or the like is guided to a heat exchanger (not shown), the base end of the intake duct 12 may be connected to the heat exchanger. In that case, the air temperature-controlled in the heat exchanger flows through the intake duct 12 toward the air conditioner 10 .

The air supply duct 14 is connected to the air conditioner 10 at its base end (that is, the upstream end) and forms a flow path for the air discharged from the air conditioner 10 . Further, as shown in FIG. 1, the base end of the air supply duct 14 exists in the downward ceiling space K2, but most of the air supply duct 14 is laid in the inter-floor space K1. The end (that is, the downstream end) of the air supply duct 14 is connected to the living space R2, as shown in FIG. As a result, the air whose temperature and humidity have been adjusted by the air conditioner 10 is supplied through the air supply duct 14 into the living space R2.

Materials for forming the intake duct 12 and the air supply duct 14 are not particularly limited, and known materials suitable for forming the ducts can be used. In addition, although there are no particular restrictions on the installation route, duct shape, and duct diameter (opening size) of each of the intake duct 12 and the air supply duct 14, a suitable route, shape, and size are determined according to the specifications of the air conditioner 10. It's good.

The opening 16 is a hole formed in a portion of the ceiling wall C facing the living space R1, and communicates (more specifically, continues) with the living space R1. The provision of the opening 16 allows the air in the living space R1 to flow into the adjacent space K, strictly speaking, the space K2 in the lowered ceiling. Further, in the present embodiment, the opening 16 is a hole penetrating the ceiling wall C along the vertical direction. That is, the living space R<b>1 is positioned directly below the opening 16 , and the air in the living space R<b>1 flows into the adjacent space K by rising through the opening 16 .

Although the shape and size of the opening 16 are not particularly limited, it is preferable that the shape and size are suitable for allowing the air in the living space R1 to flow into the adjacent space K. A ceiling louver (hereinafter referred to as a ceiling louver 18) is fitted in the opening 16. As shown in FIG. The ceiling louver 18 is a known louver that can be attached to the ceiling, and has the function of making it difficult to see the inside of the ceiling space K2 (that is, behind the ceiling) by descending from the living space R1 while ensuring the ventilation of the opening 16. I have.

The take-in device 20 is a substantially box-shaped device having the appearance shown in FIG. As a suction box that constitutes the intake device 20, a known duct suction box used for air conditioners can be used.

The intake device 20 is provided with two connection flanges, and a portion of the intake duct 12 located upstream of the intake device 20 is connected to one of the connection flanges. A portion of the intake duct 12 located downstream of the intake device 20 is connected to the other connection flange. In other words, the internal space of the intake device 20 forms part of the air flow path formed by the intake duct 12 .

In this embodiment, the capture device 20 is arranged in the inter-floor space K1. Specifically, as shown in FIG. are placed in Thus, in this embodiment, the capture device 20 is arranged in a space different from the space in which the air conditioner 10 is arranged. As a result, compared to the case where both the air conditioner 10 and the intake device 20 are arranged in the lowered ceiling space K2, the situation where the lowered ceiling space K2 is enlarged (in other words, the ceiling position of the lowered ceiling is further lowered) ) can be avoided.

The intake 20 also has an air intake 22 as shown in FIG. When the intake device 20 is arranged in the inter-floor space K1, the intake port 22 communicates with the inter-floor space K1 (that is, the adjacent space K). As a result, the intake device 20 takes in the air present around the intake port 22 through the intake port 22 . Further, in this embodiment, the intake device 20 is arranged with the intake port 22 facing downward in the vertical direction. As a result, the intake device 20 takes in air from below the intake device 20 .

The positional relationship between the opening 16 and the intake device 20 in this embodiment will be described with reference to FIGS. , and the capture device 20 is arranged in the inter-floor space K1. That is, in the present embodiment, the opening 16 and the take-in device 20 are located on opposite sides of each other with the air conditioner 10 interposed therebetween in the vertical direction.

Further, as shown in FIG. 3, the opening 16 is formed in the horizontal direction at one end of the ceiling of the living space R1 (that is, the low ceiling portion Ca), specifically at the end on the living space R2 side. On the other hand, in the horizontal direction, the capture device 20 is positioned at the other end of the ceiling of the living space R1 opposite to the one end of the ceiling of the living space R1 (the side away from the living space R2). end). Further, as shown in FIG. 3, the air conditioner 10 is arranged between the opening 16 and the take-in device 20 in the horizontal direction. In other words, the opening 16 and the take-in device 20 are positioned on opposite sides of each other with the air conditioner 10 interposed therebetween in the horizontal direction.

In the air conditioning system S configured as described above, when the air conditioner 10 is operated, specifically when the cooling or dehumidifying operation is performed, dehumidified air (dehumidified air) flows through the air supply duct 14 into the living space R2. supplied to As a result, the air in the living space R2 is replaced with the dehumidified air.

Further, in this embodiment, the living space R1 and the living space R2 communicate with each other through the ventilation holes H provided in the wall W separating these spaces. As a result, the air (dehumidified air) in the living space R2 flows through the ventilation holes H into the living space R1, as shown in FIG. Further, as shown in FIG. 4, the air in the living space R1 passes through the opening 16 and flows into the adjacent space K, and more specifically, flows down into the ceiling space K2.

On the other hand, in the inter-floor space K1 that is continuous with the space K2 in the lowered ceiling, the intake device 20 takes in the air in the inter-floor space K1 through the intake port 22 . As a result, as shown in FIG. 4, the air moves (generates an airflow) from the opening 16 toward the take-in device 20 in the adjacent space K. As shown in FIG.

Also, as shown in FIGS. 1 and 3, the air conditioner 10 is arranged between the opening 16 and the intake device 20, so that the above-mentioned airflow passes over the air conditioner 10 as shown in FIG. flow through (across) At this time, the temperature of the air around the main body of the air conditioner 10, the refrigerant pipe, and the air supply duct 14 is lowered, and dew condensation is likely to occur. of air moves toward and is entrained within the intake 20 . As a result, the occurrence of dew condensation around the air conditioner 10 is suppressed.

The air taken into the intake device 20 joins the air flowing through the intake duct 12 from the upstream side of the intake device 20 and flows through the intake duct 12 toward the air conditioner 10 .

As a result, in the present embodiment, the occurrence of dew condensation around the air conditioner 10 installed in the adjacent space K can be effectively suppressed. More specifically, in the conventional air conditioning system Sx, as shown in FIG. 5, the air conditioner 10 and the intake device 20 are arranged in the space K2 in the low ceiling for the reason of utilizing the space in the space K2 in the low ceiling. rice field. Also, the intake 20 is in a state where the intake 22 communicates with the living space R1, and more specifically, an opening 16x is provided in a portion of the ceiling of the living space R1 facing the intake 22. As shown in FIG. That is, in the conventional air conditioning system Sx, the air in the living space R1 is taken into the intake device 20 through the opening 16x and the intake port 22, and then flows through the intake duct 12 toward the air conditioner 10. was

On the other hand, in the adjacent space K including the space K2 in the lowered ceiling, unlike the space that is actively air-conditioned (for example, the living space R2), it is difficult for the air supplied from the air conditioner 10 to spread. The space K2 is likely to become a high humidity environment. When air flows from the inter-floor space K1 into the space K2 in the lowered ceiling, or when outside air permeates the outer wall near the space K2 in the lowered ceiling and leaks into the space K2 in the lowered ceiling, The inner space K2 becomes more likely to become highly humid.

In the above situation, when the air conditioner 10 is in cooling operation or dehumidifying operation, the temperature around the air conditioner 10 is lowered, so there is a possibility that dew condensation occurs in the vicinity of the air conditioner 10 . Furthermore, since air generally does not easily flow in the adjacent space K, the lowered ceiling space K2 becomes more likely to become highly humid, and the risk of dew condensation near the air conditioner 10 further increases.

On the other hand, in the present embodiment, the air (dehumidified air) supplied from the air conditioner 10 flows down through the living space R2, the living space R1, and the opening 16 into the ceiling space K2, and further flows into the inter-floor space. It is captured inside the capture device 20 installed in K1. As a result, air movement (airflow) occurs in the adjacent space K, and the air in the adjacent space K is taken into the intake device 20 and sent to the air conditioner 10 through the intake duct 12, as described above. As a result, it is possible to satisfactorily suppress high humidity in the downward ceiling space K2.

In addition, in the present embodiment, the opening 16 and the intake device 20 are arranged on opposite sides of the air conditioner 10 in the horizontal direction and the vertical direction. te) flows. This makes it easier to replace the air around the air conditioner 10 with the air taken in from the opening 16, and as a result, the occurrence of dew condensation around the air conditioner 10 can be more effectively suppressed.

Furthermore, as shown in FIG. 3, in the horizontal direction, it is formed at one end of the low ceiling portion Ca, which is the ceiling of the living space R1, and the intake device 20 is arranged at a position close to the other end of the low ceiling portion Ca. ing. With such a positional relationship, it is possible to secure a longer air movement path from the opening 16 to the intake device 20, in other words, it is possible to suppress short-circuiting of the air movement path. As a result, the occurrence of dew condensation around the air conditioner 10 can be suppressed more effectively.

<<About other embodiments>>
Although one embodiment of the air conditioning system of the present invention has been described so far, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. That is, the present invention can be changed and improved without departing from its spirit. Of course, the present invention also includes equivalents thereof.

Further, in the above embodiment, a portion of the ceiling (low ceiling portion) is made lower than the other portions, and the air conditioner 10 is installed in the adjacent space above the low ceiling portion, specifically, the space K2 in the lowered ceiling. , and the configuration for suppressing the occurrence of dew condensation around the air conditioner 10 has been described. However, it is not limited to this, and a configuration in which the ceiling height is uniform, that is, a configuration in which the ceiling is not provided with a low ceiling portion and the air conditioner 10 is installed in the inter-floor space K1. may On the other hand, in a configuration in which a low ceiling portion is provided, the space K2 in the lowered ceiling tends to become a high-humidity environment, and when the air conditioner 10 is installed in the space K2 in the lowered ceiling, more dew condensation occurs around the air conditioner 10. becomes easier. Therefore, when the air conditioner 10 is installed in the downward ceiling space K2, the effect of the present invention becomes more significant.

In addition, in the above embodiment, the intake device 20 is configured by a suction box, but other types of intake devices can be used as long as they can be attached to a duct and have a structure for taking in air. may For example, a branch duct connected to the intake duct 12 and a suction fan arranged in the branch duct may be used as intake devices.

In the above embodiment, the opening 16 and the take-in device 20 are arranged on opposite sides of the air conditioner 10 in the horizontal direction and the vertical direction. Further, in the horizontal direction, the opening 16 is formed at one end of the ceiling of the living space R1, which is the low ceiling portion Ca, and the capture device 20 is arranged at a position near the other end. However, the positions of the opening 16 and the take-in device 20 are not particularly limited. On the other hand, from the viewpoint of effectively suppressing the occurrence of dew condensation around the air conditioner 10, the above-described positional relationship between the opening 16 and the intake device 20 is more preferable. Further, it is more preferable to secure a longer air movement path from the opening 16 to the intake 20, and from that point of view, it is preferable that the opening 16 and the intake 20 are separated as much as possible.

In the above embodiment, the opening 16 is a hole that penetrates the ceiling wall C along the vertical direction. It may be a hole formed as follows. 6, the opening 16 may be formed in a side portion Cs of the ceiling wall C, which is a downward ceiling, extending in the vertical direction at a position directly above the wall W. As shown in FIG.
In addition, in the above-described embodiment, the intake device 20 is arranged with the intake port 22 facing downward in the vertical direction, but the intake port 22 may face straight down or may face obliquely downward. .

Further, in the above-described embodiment, the air conditioner 10 is installed in the space K2 in the lowered ceiling, and the intake device 20 is arranged in the space K1 between floors, but the present invention is not limited to this. Both the air conditioner 10 and the intake device 20 may be arranged in the downward ceiling space K2. However, by arranging the capture device 20 in the inter-floor space K1 different from the space K2 in the low ceiling in which the air conditioner 10 is installed, it is possible to avoid an increase in the size of the space K2 in the low ceiling. From this point of view, the above embodiment is preferable.

10 air conditioner 12 intake duct 14 air supply duct 16, 16x opening 18 ceiling louver 20 intake 22 intake B building C ceiling wall Ca low ceiling part Cs side part H ventilation hole K1 space between floors (first space)
K2 Lower ceiling space (second space)
R1 living space R2 living space (other space)
S, Sx Air conditioning system W Wall

Claims (9)

In a building, an air conditioner located above a ceiling wall and installed in an adjacent space adjacent to the ceiling wall;
a duct forming a flow path for air flowing toward the air conditioner;
an opening formed in the ceiling wall and communicating with a space located opposite to the adjacent space across the ceiling wall;
an air-conditioning system, comprising: an intake device attached to the duct and taking in air through an intake opening communicating with the adjacent space. When the ceiling provided in the building has a plurality of portions with different lower surface positions of the ceiling,
2. The air-conditioning system according to claim 1, wherein said air conditioner is installed in said adjacent space adjacent to said ceiling wall forming a low-ceiling portion in which said lower surface position is lower among said plurality of portions. In the building having a plurality of floors, the adjacent space is divided into a first space positioned between adjacent floors and a second space positioned vertically between the first space and the ceiling wall. 3. The air conditioning system according to claim 1 or 2, wherein said air conditioner is installed in said second space and said intake is located in said first space. 4. The air conditioning system according to any one of claims 1 to 3, wherein said opening and said take-in device are vertically positioned on opposite sides of said air conditioner. 5. The air conditioning system according to any one of claims 1 to 4, wherein said opening and said take-in are horizontally positioned on opposite sides of said air conditioner. 6. The air conditioning system according to any one of claims 1 to 5, wherein said intake is a suction box installed in the middle of said duct and forms a part of said flow path. 7. The air conditioning system according to any one of claims 1 to 6, wherein said opening is fitted with a ceiling louver. When the ceiling provided in the building has a plurality of portions with different lower surface positions of the ceiling,
The opening is formed at one end of a low-ceiling portion having a lower lower surface position among the plurality of portions,
8. The intake device is arranged in a horizontal direction closer to the other end of the low ceiling portion on the opposite side of the one end than to the one end of the low ceiling portion. The air conditioning system according to any one of Claims 1 to 3. The duct is an intake duct connected to the air conditioner,
further comprising an air supply duct connected to the air conditioner and forming a flow path for air discharged from the air conditioner;
9. The end of the air supply duct according to any one of claims 1 to 8, wherein the end of the air supply duct is connected to another space adjacent to the space located on the opposite side of the adjacent space across the ceiling wall. air conditioning system.

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