Air conditioning system

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

[Technical Field]

[0001] The present invention relates to an air conditioning system, and more particularly to an air conditioning system for suppressing condensation in a space above and adjacent to a ceiling wall in a building. [Background technology]

[0002] In a building, an air conditioner may be installed in a space above the ceiling wall adjacent to the ceiling wall (hereinafter referred to as the adjacent space), and air whose temperature and humidity have been adjusted by the air conditioner may be sent to a specified space within the building (see, for example, Patent Document 1).

[0003] In the building described in Patent Document 1, an air conditioner is installed in the attic space on the first floor, more specifically, in the inter-floor space between the ceiling of the first floor and the floor of the second floor, and air conditioned by this air conditioner is supplied to living spaces and the like within the building. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-291977 Summary of the Invention [Problem to be solved by the invention]

[0005] However, depending on the arrangement of equipment and building materials in the adjacent space, ventilation within the adjacent space may be difficult, making it more susceptible to high humidity. In such cases, condensation may occur in the air conditioner itself and in the pipes and ducts located around it during cooling operation in the adjacent space.

[0006] Therefore, the present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide an air conditioning system that can suppress the occurrence of condensation in an adjacent space where an air conditioner is installed. [Means for solving the problem]

[0007] The above-mentioned problems are solved by the air conditioning system of the present invention, which comprises an air conditioner in a building located above a ceiling wall and installed in an adjacent space adjacent to the ceiling wall, a duct that forms a flow path for air flowing toward the air conditioner, an opening formed in the ceiling wall that communicates with a space located on the opposite side of the ceiling wall from the adjacent space, and an intake attached to the duct that takes in air through an intake that communicates with the adjacent space.

[0008] In the air conditioning system of the present invention configured as described above, air enters the adjacent space through the opening, and the air that passes through the opening is taken into the interior of the intake. By creating this air flow in the adjacent space, it is possible to prevent the adjacent space from becoming humid, and as a result, the occurrence of condensation in the adjacent space is effectively suppressed.

[0009] In the air conditioning system described above, the ceiling installed in the building may have multiple sections with different ceiling underside positions. In this case, it is preferable that the air conditioner be installed in an adjacent space adjacent to a ceiling wall that forms a low ceiling section with a lower underside position among the multiple sections. According to the above configuration, it is possible to effectively suppress the occurrence of condensation in the adjacent space located above the so-called dropped ceiling.

[0010] In the air conditioning system described above, in a building having multiple floors, the adjacent spaces may be divided into a first space located between adjacent floors and a second space located vertically between the first space and the ceiling wall. In this case, it is more preferable that the air conditioner is installed in the second space and the intake is located 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 a situation in which the space becomes large.

[0011] In the above air conditioning system, it is more preferable that the opening and the intake are positioned on opposite sides of the air conditioner in the vertical direction. According to the above configuration, the air around the air conditioner can be easily replaced with the air taken in through the opening, thereby more effectively suppressing the occurrence of condensation around the air conditioner.

[0012] Furthermore, in the above air conditioning system, it is even more preferable that the opening and the intake are positioned on opposite sides of the air conditioner in the horizontal direction. According to the above configuration, the air around the air conditioner can be easily replaced with the air taken in through the opening, thereby more effectively suppressing the occurrence of condensation around the air conditioner.

[0013] In the above air conditioning system, it is even more preferable that the intake device is a suction box installed midway along the duct and forms part of the flow path. According to the above configuration, air in the adjacent space, particularly the air around the suction box, can be appropriately taken in.

[0014] Furthermore, in the above air conditioning system, it is even more preferable if a ceiling louver is fitted into the opening. According to the above configuration, it is possible to prevent the adjacent space from being seen through the opening from below the ceiling wall.

[0015] Furthermore, in the above-described air conditioning system, the ceiling provided in the building may have a plurality of sections with different ceiling underside positions. In this case, it is even more preferable if an opening is formed at one end of a low ceiling section with a lower underside position among the plurality of sections, and the intake is positioned closer to the other end of the low ceiling section opposite the one end in the horizontal direction than the one end of the low ceiling section. According to the above configuration, a longer path for air to travel from the opening to the intake can be secured, thereby more effectively suppressing the occurrence of condensation around the air conditioner.

[0016] Furthermore, in the above-mentioned air conditioning system, it is even more preferable if the duct is an intake duct connected to the 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, and the end of the air supply duct is connected to another space adjacent to the space located on the opposite side of the ceiling wall from the adjacent space. According to the above configuration, the air discharged from the air conditioner installed in the adjacent space can be appropriately supplied to its destination, while appropriately suppressing the occurrence of condensation in the adjacent space. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide an air conditioning system that can suppress the occurrence of condensation in a space adjacent to the air conditioner in which the air conditioner is installed. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is an explanatory diagram of an air conditioning system according to an embodiment of the present invention; [Figure 2] FIG. 2 is a diagram showing the appearance of a capture device. [Figure 3] FIG. 2 is a schematic plan view showing the positions of an air conditioner, an opening, and an intake device. [Figure 4] FIG. 10 is a diagram showing the air flow in the adjacent space. [Figure 5] FIG. 1 is a diagram showing the configuration of a conventional air conditioning system. [Figure 6] FIG. 10 is an explanatory diagram of an air conditioning system according to a modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] <<About an Air Conditioning System According to an Embodiment of the Present Invention>> Hereinafter, one embodiment of the present invention (hereinafter referred to as this embodiment) will be described with reference to the accompanying drawings. Note that in the drawings, each component is illustrated somewhat simplified and schematic to make the description easier to understand. Furthermore, the size (dimensions) of each component and the spacing between components shown in the drawings may differ from the actual ones.

[0020] The air conditioning system according to this embodiment (hereinafter simply referred to as air conditioning system S) is used in a building B having a structure with multiple floors, and specifically supplies temperature- and humidity-controlled air to each room in the building and to spaces other than the rooms (for example, corridors between rooms). The building B in which the air conditioning system S is used may be a residence (including a rental property), or may be a building built for purposes other than residential use, such as an office, building, or store. For convenience of explanation, the following description will be given taking a two-story building B as an example. However, the number of floors that the building B has is not particularly limited.

[0021] Referring to Figure 1, the structure of building B will be described. The first floor has multiple living spaces, including two living spaces R1 and R2. The two living spaces R1 and R2 are adjacent to each other, separated by a wall W. One living space R1 is, for example, a space with a hallway on the first floor, and the other living space R2 is, for example, a living room. Note that living space R2 corresponds to the "other space" of the present invention.

[0022] As shown in FIG. 1, a ventilation hole H is provided in the wall W, and the two living spaces R1 and R2 are in communication with each other through the ventilation hole H. Here, the communication between the two living spaces R1 and R2 means that the two living spaces R1 and R2 are continuous (i.e., connected as spaces), and that air can freely flow from one living space to the other. The communication between the two living spaces R1 and R2 can also include the case where a wall or other space is interposed between the two living spaces R1 and R2.

[0023] In addition, the living space R1 and the living space R2 do not have to be separated by a wall W. For example, the two living spaces R1 and R2 may exist within the same room, with the living space R1 being located in the corner of a room and the living space R2 being located in the center of the same room.

[0024] Furthermore, the ceiling wall C of the first floor is located at the upper end of each of the living spaces R1 and R2. As shown in FIG. 1, the ceiling of the first floor has multiple sections with different underside positions, and the underside of the ceiling of living space R1 is lower than the underside of the ceiling of living space R2. In other words, of the multiple sections of the ceiling on the first floor, the section corresponding to the ceiling of living space R1 is a low ceiling section Ca, which is a so-called dropped ceiling. The underside of the ceiling of living space R1 may be, for example, approximately 320 mm lower than the underside of the ceiling of living space R2.

[0025] 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 the first space located between adjacent floors (i.e., the first and second floors). Directly above the ceiling of the living space R1, there exists a space K2 within the lowered ceiling. The space K2 within the lowered ceiling corresponds to the second space located vertically between the inter-floor space K1 and the ceiling wall C (strictly speaking, the part of the ceiling wall C that corresponds to the ceiling of the living space R1). In other words, the space K2 within the lowered ceiling and the inter-floor space K1 are arranged vertically in a continuous line above the living space R1.

[0026] Here, the inter-floor space K1 and the space K2 inside the dropped ceiling correspond to the adjacent space K located above the ceiling wall C and adjacent to the ceiling wall C in the building B. Furthermore, the space K2 inside the dropped ceiling can be said to be part of the adjacent space K that is adjacent to the ceiling wall that forms the ceiling of the living space R1 (i.e., the low ceiling portion Ca) among the ceilings on the first floor. In other words, the living space R1 is a space located on the opposite side of the ceiling wall C from the adjacent space K (more specifically, the space K2 inside the dropped ceiling).

[0027] Regarding the configuration of the air conditioning system S, as shown in FIG. 1, the air conditioning system S has an air conditioner 10, an intake duct 12, an air supply duct 14, an opening 16 formed in the ceiling wall C, and an intake device 20 provided at a midpoint of the intake duct 12.

[0028] The air conditioner 10 is configured using a known air conditioner, and in this embodiment, for example, is a unit-type air conditioner in which all of the components of the air conditioner 10 (equipment excluding the housing) are housed within a housing. However, this is not limited to this, and the air conditioner 10 may be separated 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 an adjacent space K, more specifically, in a space K2 within the dropped ceiling. In this way, in this embodiment, the space K2 within the dropped ceiling is effectively used as installation space for the air conditioner 10.

[0029] The intake duct 12 is a duct that forms a flow path for air flowing toward the air conditioner 10, and an end (i.e., downstream end) of the intake duct 12 is connected to the air conditioner 10 as shown in Fig. 1. A portion of the intake duct 12 is laid in the inter-floor space K1, and the downstream end of the intake duct 12 is located in the space K2 within the lowered ceiling.

[0030] The base end (i.e., the upstream end) of intake duct 12 is connected to, for example, an outside air inlet (not shown) provided on the outer wall of building B. In addition, when air drawn in through a range hood, ventilation fan, or the like is guided to a heat exchanger (not shown), the base end of intake duct 12 may be connected to the heat exchanger. In this case, air whose temperature has been adjusted in the heat exchanger flows through intake duct 12 toward air conditioner 10.

[0031] The base end (i.e., the upstream end) of the air supply duct 14 is connected to the air conditioner 10, and forms a flow path for air discharged from the air conditioner 10. As shown in FIG. 1, the base end of the air supply duct 14 is located within the space K2 inside the lowered ceiling, but most of the air supply duct 14 is laid within the inter-floor space K1. The end (i.e., the downstream end) of the air supply duct 14 is connected to the living space R2, as shown in FIG. 1. As a result, air whose temperature and humidity have been adjusted by the air conditioner 10 is supplied into the living space R2 through the air supply duct 14.

[0032] There are no particular restrictions on the materials that make up the intake duct 12 and the supply duct 14, and any known material suitable for making ducts can be used. There are also no particular restrictions on the installation route, duct shape, and duct diameter (opening size) of each of the intake duct 12 and the supply duct 14, but it is best to determine a suitable route, shape, and size depending on the specifications of the air conditioner 10.

[0033] The opening 16 is a hole formed in the portion of the ceiling wall C facing the living space R1, and is in communication (more specifically, continuous) with the living space R1. The provision of this opening 16 allows air within the living space R1 to flow into the adjacent space K, more specifically, into the space K2 within the lowered ceiling. In this embodiment, the opening 16 is a hole that penetrates the ceiling wall C in the vertical direction. In other words, the living space R1 is located directly below the opening 16, and the air within the living space R1 flows into the adjacent space K by rising through the opening 16.

[0034] The shape and size of the opening 16 are not particularly limited, but are preferably determined to be suitable for allowing air within the living space R1 to flow into the adjacent space K. A ceiling louver (hereinafter referred to as ceiling louver 18) is fitted into the opening 16. The ceiling louver 18 is a known louver that can be attached to a ceiling, and has the function of ensuring ventilation through the opening 16 while hanging down from the living space R1 to make it difficult to see into the in-ceiling space K2 (i.e., the attic).

[0035] The intake device 20 is a generally box-shaped device having the appearance shown in Fig. 2, and specifically, is an intake box disposed midway along the intake duct 12. As the intake box constituting the intake device 20, a known duct intake box used for air conditioners can be used.

[0036] The intake device 20 is provided with two connection flanges, and one of the connection flanges is connected to a portion of the intake duct 12 that is upstream of the intake device 20. The other connection flange is connected to a portion of the intake duct 12 that is downstream of the intake device 20. In other words, the internal space of the intake device 20 forms part of the air flow path formed by the intake duct 12.

[0037] Furthermore, in this embodiment, the intake device 20 is disposed in the inter-floor space K1, and more specifically, in a region of the inter-floor space K1 adjacent to the space K2 within the lowered ceiling, as shown in Fig. 1. Thus, in this embodiment, the intake device 20 is disposed in a space separate from the space in which the air conditioner 10 is disposed. This makes it possible to avoid a situation in which the space K2 within the lowered ceiling becomes larger (in other words, to further lower the ceiling position of the lowered ceiling) compared to when both the air conditioner 10 and the intake device 20 are disposed in the space K2 within the lowered ceiling.

[0038] 2, the intake device 20 has an air intake port 22. When the intake device 20 is disposed in the inter-floor space K1, the intake port 22 communicates with the inter-floor space K1 (i.e., the adjacent space K). As a result, the intake device 20 takes in air present around the intake port 22 into the intake device 20 through the intake port 22. In this embodiment, the intake device 20 is disposed 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.

[0039] 1 and 3, the positional relationship between the opening 16 and the intake 20 in this embodiment will be described. The opening 16 is formed in the ceiling wall C, the air conditioner 10 is installed in the space K2 within the lowered ceiling, and the intake 20 is disposed in the inter-floor space K1. In other words, in this embodiment, the opening 16 and the intake 20 are located on opposite sides of the air conditioner 10 in the vertical direction.

[0040] 3, the opening 16 is formed in the horizontal direction at one end of the ceiling of the living space R1 (i.e., the low ceiling portion Ca), more specifically at the end on the living space R2 side. In contrast, the intake device 20 is disposed in a position in the horizontal direction closer to the other end of the ceiling of the living space R1 opposite to the one end (the end away from the living space R2) than to the one end of the ceiling of the living space R1. Also, as shown in FIG. 3, the air conditioner 10 is disposed between the opening 16 and the intake device 20 in the horizontal direction. In other words, the opening 16 and the intake device 20 are positioned on opposite sides of the air conditioner 10 in between.

[0041] In the air conditioning system S configured as described above, when the air conditioner 10 is operating, specifically when performing cooling or dehumidification operation, dehumidified air (dehumidified air) is supplied into the living space R2 through the air supply duct 14. This replaces the air in the living space R2 with dehumidified air.

[0042] In this embodiment, the living space R1 and the living space R2 are in communication with each other through a ventilation hole H provided in the wall W separating these spaces. As a result, as shown in FIG. 4, air (dehumidified air) in the living space R2 flows into the living space R1 through the ventilation hole H. Also, as shown in FIG. 4, the air in the living space R1 flows into the adjacent space K through the opening 16, and more specifically, into the space K2 in the lowered ceiling.

[0043] Meanwhile, in the inter-floor space K1 that is continuous with the space K2 within the dropped ceiling, the intake device 20 takes in air within the inter-floor space K1 through the intake port 22. As a result, as shown in Figure 4, air moves from the opening 16 toward the intake device 20 within the adjacent space K (airflow is generated).

[0044] 1 and 3, the air conditioner 10 is disposed between the opening 16 and the intake duct 20, and therefore the airflow flows over (across) the air conditioner 10, as shown in Fig. 4. At this time, the air temperature drops around the main body of the air conditioner 10, the refrigerant pipes, and the air supply duct 14, making condensation more likely to occur, but the airflow causes the low-temperature, high-humidity air around the air conditioner 10 to move toward the intake duct 20 and be taken into the intake duct 20. As a result, condensation around the air conditioner 10 is suppressed.

[0045] The air taken into the intake device 20 merges with the air flowing through the intake duct 12 from the upstream side of the intake device 20 and flows through the intake duct 12 towards the air conditioner 10.

[0046] As a result of the above, in this embodiment, it is possible to effectively suppress the occurrence of condensation around the air conditioner 10 installed in the adjacent space K. More specifically, in a conventional air conditioning system Sx, the air conditioner 10 and the intake device 20 were placed in the space K2 within the lowered ceiling, as shown in FIG. 5, in order to utilize the space within the lowered ceiling. Furthermore, the intake port 22 of the intake device 20 was in communication with the living space R1, and specifically, an opening 16x was provided in the ceiling of the living space R1 at a portion opposite the intake port 22. In other words, in the conventional air conditioning system Sx, air within the living space R1 was taken into the intake device 20 through the opening 16x and the intake port 22, and then flowed through the intake duct 12 toward the air conditioner 10.

[0047] On the other hand, in the adjacent space K including the space K2 within the dropped ceiling, unlike a space that is actively air-conditioned (for example, the living space R2), the air supplied from the air conditioner 10 does not circulate widely, and as a result, the space K2 within the dropped ceiling is likely to become a highly humid environment. Also, when air flows into the space K2 within the dropped ceiling from the inter-floor space K1, or when outside air permeates an exterior wall near the space K2 within the dropped ceiling and leaks into the space K2 within the dropped ceiling, the space K2 within the dropped ceiling is more likely to become highly humid.

[0048] In the above situation, when the air conditioner 10 is in cooling operation or dehumidifying operation, the temperature around the air conditioner 10 drops, which may cause condensation to form near the air conditioner 10. Furthermore, since air generally does not flow easily within the adjacent space K, the humidity in the space K2 within the lowered ceiling tends to increase, further increasing the risk of condensation to form near the air conditioner 10.

[0049] In contrast to this, in this embodiment, air (dehumidified air) supplied from the air conditioner 10 flows into the space K2 within the dropped ceiling through the living space R2, the living space R1, and the opening 16, and is then taken into the air intake device 20 installed in the inter-floor space K1. As a result, as described above, air movement (airflow) occurs within the adjacent space K, and the air within the adjacent space K is taken into the air intake device 20 and sent to the air conditioner 10 through the intake duct 12. As a result, high humidity in the space K2 within the dropped ceiling can be effectively suppressed.

[0050] Furthermore, in this embodiment, the opening 16 and the intake device 20 are disposed on opposite sides of the air conditioner 10 in the horizontal and vertical directions, so the airflow flows beyond (across) the air conditioner 10. This makes it easier to replace the air around the air conditioner 10 with the air taken in through the opening 16, and as a result, the occurrence of condensation around the air conditioner 10 can be more effectively suppressed.

[0051] 3, the air conditioner 10 is formed at one end of the low ceiling portion Ca, which is the ceiling of the living space R1, with the intake device 20 positioned near the other end of the low ceiling portion Ca. This positional relationship ensures a longer air path from the opening 16 to the intake device 20, or in other words, prevents the air path from being short-circuited. As a result, condensation around the air conditioner 10 can be more effectively prevented.

[0052] <<Other embodiments>> While one embodiment of the air conditioning system of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention and is not intended to limit the present invention. In other words, the present invention may be modified or improved without departing from the spirit and scope of the present invention. Furthermore, the present invention naturally includes equivalents thereof.

[0053] Furthermore, in the above embodiment, a configuration has been described in which a portion of the ceiling (a low-ceiling portion) is lower than the remaining portions, and the air conditioner 10 is installed in an adjacent space located above the low-ceiling portion, specifically, in the space K2 within the dropped ceiling, to suppress the occurrence of condensation around the air conditioner 10. However, this is not limited to this, and the configuration may also be one in which the ceiling height is uniform, that is, the ceiling does not have a low-ceiling portion, and the air conditioner 10 is installed in the inter-floor space K1. On the other hand, in a configuration in which a low-ceiling portion is provided, the space K2 within the dropped ceiling is likely to become a high-humidity environment, and installing the air conditioner 10 in the space K2 within the dropped ceiling makes condensation more likely to occur around the air conditioner 10. Therefore, when the air conditioner 10 is installed in the space K2 within the dropped ceiling, the effects of the present invention become more significant.

[0054] In the above embodiment, the intake device 20 is configured as a suction box, but other types of intake devices may be used as long as they are components that can be attached to a duct and have a structure that draws air in. For example, a branch duct connected to the intake duct 12 and a suction fan disposed within the branch duct may be used as the intake device.

[0055] In the above embodiment, the opening 16 and the air intake 20 are arranged on opposite sides of the air conditioner 10 in the horizontal and vertical directions. Furthermore, 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 air intake 20 is arranged in a position close to the other end. However, the positions of the opening 16 and the air intake 20 are not particularly limited. On the other hand, from the viewpoint of effectively suppressing the occurrence of condensation around the air conditioner 10, the above-described positional relationship between the opening 16 and the air intake 20 is more preferable. Furthermore, it is even more preferable to ensure a longer air movement path from the opening 16 to the air intake 20, and from that viewpoint, it is preferable that the opening 16 and the air intake 20 are as far apart as possible.

[0056] In the above embodiment, the opening 16 is a hole that penetrates the ceiling wall C in the vertical direction, but it may be a through hole that is formed straight in the vertical direction, or a hole that is formed at an angle to the vertical direction. Also, as shown in Fig. 6, the opening 16 may be formed in a side portion Cs of the ceiling wall C, which is a dropped ceiling, that extends in the vertical direction directly above the wall W. Furthermore, in the above embodiment, the capture device 20 is placed with the intake port 22 facing downward in the vertical direction, but the intake port 22 may face directly downward or obliquely downward.

[0057] Furthermore, in the above embodiment, the air conditioner 10 is installed in the space K2 within the dropped ceiling, and the intake 20 is arranged in the inter-floor space K1, but this is not limited to this. Both the air conditioner 10 and the intake 20 may be arranged in the space K2 within the dropped ceiling. However, by arranging the intake 20 in an inter-floor space K1 different from the space K2 within the dropped ceiling in which the air conditioner 10 is installed, it is possible to avoid the space K2 within the dropped ceiling becoming larger. In this respect, the above embodiment is preferable. [Explanation of symbols]

[0058] 10 Air conditioner 12 Intake duct 14 Air supply duct 16,16x opening 18 Ceiling louver 20 Capture device 22 Intake Building B C Ceiling wall Ca low ceiling area Cs Side H Ventilation hole K1 Inter-floor space (first space) K2 Dropped ceiling space (second space) R1 living space R2 Living space (other spaces) S,Sx air conditioning system W wall

Claims

1. In the building, an air conditioner is installed in an adjacent space located above a ceiling wall and adjacent to the ceiling wall; a duct that forms a flow path for air flowing toward the air conditioner; an opening formed in the ceiling wall and communicating with a space located on the opposite side of the ceiling wall from the adjacent space; an intake attached to the duct and taking in air through an intake port communicating with the adjacent space; In the building having multiple floors, when the adjacent spaces are divided into a first space located between adjacent floors and a second space located vertically between the first space and the ceiling wall, the air conditioner is installed in the second space and the intake is arranged in the first space.

2. In a building, an air conditioner located above a ceiling wall and installed in an adjacent space adjacent to the ceiling wall; a duct that forms a flow path for air flowing toward the air conditioner; an opening formed in the ceiling wall and communicating with a space located on the opposite side of the ceiling wall from the adjacent space; an intake attached to the duct and taking in air through an intake port communicating with the adjacent space; An air conditioning system, wherein the opening and the intake are positioned on opposite sides of the air conditioner in the vertical direction.

3. In a building, an air conditioner located above a ceiling wall and installed in an adjacent space adjacent to the ceiling wall; a duct that forms a flow path for air flowing toward the air conditioner; an opening formed in the ceiling wall and communicating with a space located on the opposite side of the ceiling wall from the adjacent space; an intake attached to the duct and taking in air through an intake port communicating with the adjacent space; In the case where a 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 of the plurality of portions, the lower surface of which is located lower, An air conditioning system, wherein the intake device is arranged at a position in the horizontal direction closer to the other end of the low ceiling portion opposite the one end than to the one end of the low ceiling portion.

4. In the case where a ceiling provided in the building has a plurality of portions with different lower surface positions of the ceiling, The air conditioning system according to claim 1 , wherein the air conditioner is installed in the adjacent space adjacent to the ceiling wall that forms a low ceiling portion, the lower surface of which is lower than the lower surface of the ceiling wall, among the plurality of portions.

5. The air conditioning system according to claim 1 , wherein the opening and the intake are positioned on opposite sides of the air conditioner in the horizontal direction.

6. The air conditioning system according to claim 1 , wherein the intake is a suction box installed midway along the duct and forms part of the flow path.

7. The air conditioning system according to claim 1 , wherein a ceiling louver is fitted in the opening.

8. the duct is an intake duct connected to the air conditioner, The air conditioner further includes an air supply duct connected to the air conditioner and forming a flow path for air discharged from the air conditioner, The air conditioning system according to claim 1 , wherein an end of the air supply duct is connected to another space adjacent to the space located on an opposite side of the ceiling wall from the adjacent space.

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