Ceiling system

Abstract

To provide a ceiling system capable of preventing a dew formation.SOLUTION: A ceiling system comprises a first ceiling 21 having attic space S3 formed above, a second ceiling 22 arranged below the first ceiling 21 at an interval, having air space S20 formed between the first ceiling 21 and itself and having indoor space S5 formed below, a switch valve 51 switchable between an attic communication state communicating the indoor space S5 and the attic space S3 and an air space communication state communicating the indoor space S5 and the air space S20, and a fan 40 capable of generating an air flow flowing toward space in communication with the indoor space S5 by the switch valve 51 from the indoor space S5.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to the technology of ceiling systems using fans. [Background technology]

[0002] Conventionally, the technology of a ceiling system using a blower has been publicly known, for example as described in Patent Document 1.

[0003] The air conditioning system (ceiling system) described in Patent Document 1 includes an air conditioner and a bidirectional blower (blower). The air conditioner is installed in the attic space and is configured to adjust the temperature of air drawn in from the hallway and supply the air to the living room. The bidirectional blower is installed in the underfloor space and draws in air from the living room and exhausts it to the underfloor space when the air conditioner is performing cooling operation (e.g., in summer). The air is sent from the underfloor space to the hallway. In this way, the air conditioning system circulates air between the living room and the hallway via the air conditioner and the underfloor space, thereby lowering the temperature in the hallway.

[0004] When the air conditioner is in cooling mode, the ceiling of the living room, etc. becomes cold. When the air (humid) in the attic space comes into contact with the ceiling, the air is cooled, and there is a possibility that condensation will occur in the attic space. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-7688 A Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and the problem to be solved by the present invention is to provide a ceiling system capable of suppressing the occurrence of condensation. [Means for solving the problem]

[0007] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0008] That is, in claim 1, there is provided a first ceiling above which an attic space is formed, a second ceiling disposed below the first ceiling with a gap therebetween, a space is formed between the first ceiling and a room space is formed below the second ceiling, a switching unit capable of switching between a first state in which the room space and the attic space are connected to each other, or a second state in which the room space and the space are connected to each other, and a blower unit capable of generating a flow of air from the room space toward a space connected to the room space by the switching unit. A control unit that controls switching between the first state and the second state and the operation of the blower unit in response to predetermined information; Equipped with The indoor space includes a first space that can be cooled by a cooling operation of a cooling device, and the control unit switches the switching unit to the first state and operates the blower unit to supply air from the first space to the attic space when the cooling device performs a cooling operation. It is something.

[0009] In claim 2, A first ceiling having an attic space formed above, a second ceiling arranged below the first ceiling with a gap therebetween, a space portion formed between the first ceiling and a second ceiling having an indoor space formed below the first ceiling, a switching unit capable of switching between a first state in which the indoor space and the attic space are connected to each other, or a second state in which the indoor space and the space portion are connected to each other, a blower unit capable of generating an air flow from the indoor space toward a space connected to the indoor space by the switching unit, switching between the first state and the second state in response to predetermined information, and a control unit for controlling the operation of the blower unit, wherein the indoor space includes a first space capable of being cooled by cooling operation of the cooling device, and a second space different from the first space, and when the cooling device performs cooling operation, the control unit switches the switching unit to the first state and operates the blower unit to supply air from the second space to the attic space, and the air supplied to the attic space flows from the second space through a portion of the space portion located above the first space and into the attic space. It is something.

[0010] In claim 3, The indoor space includes a third space that can be heated by a heating operation of a heating device, and the control unit switches the switching unit to the second state and operates the blower unit to supply air from the third space to the air portion when the heating device performs the heating operation. It is something.

[0011] In claim 4, The heating device includes a first ceiling having an attic space formed above it, a second ceiling arranged below the first ceiling with a gap therebetween, a space portion formed between it and the first ceiling and an indoor space formed below it, a switching unit capable of switching between a first state in which the indoor space and the attic space are connected to each other, or a second state in which the indoor space and the space portion are connected to each other, a blower unit capable of generating an air flow from the indoor space toward a space connected to the indoor space by the switching unit, and a control unit that controls the switching between the first state and the second state and the operation of the blower unit in accordance with specified information, wherein the indoor space includes a third space whose interior space can be heated by a heating operation of a heating device, and the control unit switches the switching unit to the second state and operates the blower unit to supply air from the third space to the space portion when the heating device is performing a heating operation. It is something.

[0012] In claim 5, The second ceiling is provided with a first communication hole that communicates the third space with the space portion and allows air to flow from the space portion into the third space. It is something.

[0013] In claim 6, The interior space further includes a fourth space different from the third space, and the second ceiling includes a second communication hole that communicates the fourth space with the space portion. It is something.

[0014] In claim 7, The space is provided with an installation section in which wiring of equipment installed on the second ceiling can be installed. It is something. Effect of the Invention

[0016] The present invention has the following advantages.

[0017] According to claim 1, it is possible to suppress the occurrence of condensation.

[0018] In claim 2, It is possible to suppress the occurrence of condensation.

[0019] According to claim 3, it is possible to effectively prevent the occurrence of condensation.

[0020] In claim 4, It is possible to suppress the occurrence of condensation.

[0021] According to claim 5, it is possible to effectively prevent the occurrence of condensation.

[0022] According to claim 6, it is possible to effectively suppress the occurrence of condensation.

[0023] In claim 7, It is possible to suppress the flow of moisture through the first ceiling. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic diagram showing a building to which a ceiling system according to a first embodiment is applied. [Diagram 2] (a) is a plan view showing the indoor space, (b) is a plan view showing the positional relationship of the air intake port and the duct. [Diagram 3] Schematic diagram showing the operation of the ceiling system when the air conditioner is operating in cooling mode. [Figure 4] Schematic diagram showing the operation of the ceiling system when the air conditioner is in heating operation. [Diagram 5] FIG. 13 is a schematic diagram showing a building to which the ceiling system according to the second embodiment is applied. [Figure 6] 13A is a plan view showing an indoor space according to a second embodiment, and FIG. [Figure 7] Schematic diagram showing the operation of the ceiling system when the air conditioner performs cooling operation in the second embodiment. [Figure 8] FIG. 11 is a schematic diagram showing the operation of the ceiling system when the air conditioner performs heating operation in the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] In the following description, the up-down direction, the left-right direction, and the front-rear direction are defined according to the arrows shown in the drawings.

[0027] Hereinafter, the configuration of a building 1 in which a ceiling system 10 according to a first embodiment is provided will be briefly described with reference to Figs. 1 and 2(a).

[0028] The building 1 is, for example, a detached house for people to live in. The building 1 includes an exterior wall portion 2, a roof portion 3, a floor portion 4, a partition wall portion 5, a ceiling system 10, and the like.

[0029] The exterior wall portion 2 is a portion that forms the exterior wall of the building 1. The exterior wall portion 2 is provided with a louver 2a that connects an attic space S3 (described later) with the space outside the building 1. The roof portion 3 is a portion that forms the roof of the building 1. The floor portion 4 is a portion that forms the floor of the building 1. The space inside the building 1 is divided into an attic space S3 and an indoor space S5 by a ceiling 20 of a ceiling system 10 (described later).

[0030] The attic space S3 is a space formed above (behind) the ceiling 20 (first ceiling 21). The indoor space S5 is a space formed below the ceiling 20 (second ceiling 22). The indoor space S5 is divided into a plurality of spaces by the partition wall portion 5. The indoor space S5 thus divided includes the interior spaces of rooms (e.g., living room 6 and living room) that people use for a relatively long time and the interior spaces of rooms (e.g., hallway and washroom) that people use for a relatively short time. FIG. 2(a) shows the interior space S6 of the living room 6 divided by the partition wall portion 5 as an example of the indoor space S5.

[0031] 1 and 2(a) is provided with an air conditioner 6a capable of adjusting the room temperature by cooling and heating operations. Hereinafter, the space in the indoor space S5 whose room temperature can be adjusted by the air conditioner 6a (in this embodiment, the internal space S6 of the room 6) is referred to as a "temperature-controllable space."

[0032] A ceiling system 10 according to a first embodiment will be described below with reference to FIGS.

[0033] The ceiling system 10 is for suppressing the occurrence of condensation by utilizing the air in the indoor space S5 (temperature controllable space S6). The ceiling system 10 includes a ceiling 20, an on-off valve 30, a fan 40, a branch duct 50, and a control unit 60.

[0034] The ceiling 20 is a part that forms the ceiling of the indoor space S5. The ceiling 20 (a first ceiling 21 and a second ceiling 22 described later) is provided so as to cover the entire area of ​​the building 1 in a plan view. In this way, the ceiling 20 divides the inside of the building 1 into an attic space S3 and an indoor space S5. The ceiling 20 includes a first ceiling 21 and a second ceiling 22.

[0035] The first ceiling 21 is a portion forming the upper part of the ceiling 20. The first ceiling 21 is disposed at a distance downward from the roof portion 3 and is provided so as to face the attic space S3. The first ceiling 21 includes a ceiling surface material 21a, a moisture-proof sheet 21b, and a heat insulating material 21c.

[0036] The ceiling surface material 21a is a flat plate-shaped member. The ceiling surface material 21a is supported by a ceiling base (not shown) or the like, and is disposed with its plate surface facing in the vertical direction. The ceiling surface material 21a is made of, for example, a plaster board or the like.

[0037] The moisture-proof sheet 21b is a sheet-like member that is difficult for moisture to permeate. The moisture-proof sheet 21b is made of an appropriate material such as a polyethylene sheet or a plastic sheet. The moisture-proof sheet 21b increases the airtightness of the indoor space S5 and prevents the flow of moisture between the attic space S3 and the indoor space S5. The moisture-proof sheet 21b is provided so as to cover the upper surface of the ceiling surface material 21a.

[0038] The heat insulating material 21c is a member that does not easily transmit heat. The heat insulating material 21c is made of an appropriate material such as glass wool. The heat insulating material 21c is formed in a substantially plate shape and is provided on the upper surface of the moisture-proof sheet 21b.

[0039] The second ceiling 22 is a part forming the lower part of the ceiling 20. The second ceiling 22 is formed in a substantially plate-like shape with the plate surface facing in the up-down direction. The second ceiling 22 is composed of, for example, a ceiling surface material (such as gypsum board) and a heat insulating material (such as glass wool) provided on the upper surface of the ceiling surface material (not shown). The second ceiling 22 is suspended from the first ceiling 21, for example, by metal fittings. In this way, the second ceiling 22 is disposed with a gap below the first ceiling 21, and a space (hereinafter referred to as "air space S20") is formed between the second ceiling 22 and the first ceiling 21. The height of the air space S20 is set to a width of, for example, 50 to 100 mm. The second ceiling 22 is provided so as to face the indoor space S5. The second ceiling 22 is provided with an air intake port 22a.

[0040] The air supply opening 22a is for connecting the indoor space S5 and the air space S20. The air supply opening 22a is formed by a hole that penetrates the second ceiling 22 vertically. As shown in Figs. 1 and 2(b), the air supply opening 22a is formed in a portion of the second ceiling 22 that faces the temperature controllable space S6 (living room 6). In this way, the air supply opening 22a is provided so as to connect the temperature controllable space S6 and the air space S20. The air supply opening 22a is provided so as to open at the right front end of the living room 6.

[0041] Predetermined equipment K (e.g., lighting, a fire alarm, etc.) is provided in the second ceiling 22 configured as described above. The wiring H of the equipment K is installed in the air space S20. In this manner, the air space S20 serves as an installation section in which the wiring H of the equipment K can be installed, and in the first embodiment, the wiring H is installed using the installation section. Note that in Fig. 2 and subsequent figures, the equipment K and wiring H are omitted.

[0042] The on-off valve 30 is for opening and closing the air supply port 22a. The on-off valve 30 can open and close the air supply port 22a by rotating a valve body.

[0043] The fan 40 is for generating an air flow from the indoor space S5 toward the attic space S3 or the air space S20. The fan 40 is provided in an opening (a through hole different from the air intake port 22a) in the second ceiling 22, and is provided so as to be able to blow air from the temperature controllable space S6 to the downstream side (the attic space S3, etc.). The fan 40 is disposed at the left rear end of the living room 6 in a plan view (see FIG. 2(b)). Thus, the fan 40 is disposed on a diagonal line connecting the corners of the living room 6 in a plan view with respect to the air intake port 22a.

[0044] The branch duct 50 is for communicating the indoor space S5 with the attic space S3 and the air space S20. The lower left end of the branch duct 50 is connected to the fan 40 and communicates with the temperature controllable space S6 (indoor space S5) via the fan 40. The branch duct 50 is formed so as to branch upward and to the right from the connection portion with the fan 40. The upper end of the branch duct 50 is formed so as to open in the attic space S3. The right end of the branch duct 50 (the end branching to the side) is formed so as to open in the air space S20. The branch duct 50 is equipped with a switching valve 51.

[0045] The switching valve 51 is for switching between communication and disconnection between the temperature controllable space S6 (indoor space S5) and the attic space S3 and the air space S20 in the branch duct 50. The switching valve 51 can switch between communication between the temperature controllable space S6 and the attic space S3, etc., by rotating a valve body to appropriately open and close the branch duct 50.

[0046] Specifically, the switching valve 51 can connect the temperature controllable space S6 to the attic space S3 and disconnect the temperature controllable space S6 from the air space S20 by rotating the valve body in a predetermined direction (so as to close the branch portion to the right). In the first embodiment, such a state (the state shown in FIG. 1) is referred to as the "attic communication state."

[0047] Moreover, by rotating the valve body in the opposite direction to the predetermined direction (so as to close the upward branch portion), the switching valve 51 can release the communication between the temperature controllable space S6 and the attic space S3 and can communicate with the temperature controllable space S6 and the air space S20 (see FIG. 4). In the first embodiment, such a state (the state shown in FIG. 4) is referred to as an "air space communication state."

[0048] The control unit 60 is for controlling the operation of the on-off valve 30, the fan 40, and the switching valve 51. The control unit 60 is connected to the on-off valve 30, the fan 40, the switching valve 51, and the air conditioner 6a. The control unit 60 can operate the on-off valve 30 (rotate the valve body) to open and close the air supply port 22a by sending a signal to the on-off valve 30. The control unit 60 can switch between driving and stopping the fan 40 by sending a signal to the fan 40. The control unit 60 can operate the switching valve 51 (rotate the valve body) to switch between the attic communication state and the air space communication state by sending a signal to the switching valve 51. The control unit 60 can obtain the operating state of the air conditioner 6a by receiving a signal from the air conditioner 6a.

[0049] Next, the operation of the ceiling system 10 will be described.

[0050] The ceiling system 10 operates differently depending on whether the air conditioner 6a in the living room 6 is in cooling operation or heating operation. First, with reference to FIG. 3, the operation of the ceiling system 10 when the air conditioner 6a is in cooling operation will be described below.

[0051] First, the operation of the air conditioner 6a during cooling operation will be briefly described. When performing cooling operation, the air conditioner 6a draws in air from the temperature controllable space S6 and cools the air using a heat exchanger (not shown). If the air falls below the dew point temperature, the water vapor contained in the air turns into water droplets. The air conditioner 6a exhausts the water droplets to the outside of the building 1 using a hose (not shown) or the like. In this way, when performing cooling operation, the air conditioner 6a can supply dehumidified (water vapor content in the air is reduced) conditioned air A1 to the temperature controllable space S6.

[0052] Next, the operation of the ceiling system 10 during cooling operation will be described. When the air conditioner 6a performs cooling operation, the control unit 60 receives a signal from the air conditioner 6a. Based on the signal, the control unit 60 detects that the air conditioner 6a is performing cooling operation. In this case, the control unit 60 sends a signal to the on-off valve 30 to close the air intake port 22a. The control unit 60 also sends a signal to the switching valve 51 of the branch duct 50 to switch to an attic communication state in which the temperature controllable space S6 and the attic space S3 are connected to each other. The control unit 60 also sends a signal to the fan 40 to cause the fan 40 to blow air.

[0053] As a result, the fan 40 supplies conditioned air A1 to the attic space S3 via the branch duct 50. This increases the pressure in the attic space S3, and the air A2 stagnating in the attic space S3, i.e., the air that has not been dehumidified, is exhausted to the outside of the building 1 via the louver 2a. This reduces the humidity in the attic space S3.

[0054] In addition, the air space S20 is not in communication with the temperature controllable space S6 by the on-off valve 30 and the switching valve 51. Therefore, when the air conditioner 6a performs cooling operation, the ceiling surface material 21a of the first ceiling 21 is not directly cooled by the conditioned air A1 (air is supplied from the temperature controllable space S6 to the air space S20). In this way, the air space S20 can be used as an air layer for insulation, so the impact (temperature drop) of cooling operation on the ceiling surface material 21a can be mitigated.

[0055] In this way, when the air conditioner 6a is operating in cooling mode, the control unit 60 reduces the humidity in the attic space S3 and mitigates the temperature drop of the ceiling surface material 21a. This makes it possible to prevent the air (humidity) in the attic space S3 from dropping below the dew point temperature even if the air passes through the insulating material 21c and comes into contact with the moisture-proof sheet 21b. This makes it possible to prevent condensation from occurring on the ceiling 20 (moisture-proof sheet 21b) during cooling mode, for example, in the summer.

[0056] Next, with reference to FIG. 4, the operation of the ceiling system 10 when the air conditioner 6a performs heating operation will be described.

[0057] When the air conditioner 6a performs heating operation, the control unit 60 receives a signal from the air conditioner 6a. The control unit 60 detects that the air conditioner 6a performs heating operation based on the signal. In this case, the control unit 60 sends a signal to the on-off valve 30 to open the air supply port 22a. The control unit 60 also sends a signal to the switching valve 51 of the branch duct 50 to switch to an air space communication state in which the temperature controllable space S6 and the air space S20 are in communication with each other. The control unit 60 also sends a signal to the fan 40 to cause the fan 40 to blow air.

[0058] As a result, the fan 40 supplies conditioned air A1 (warm air) to the air space S20 via the branch duct 50. This increases the pressure in the air space S20, and air flows from the air space S20 into the temperature controllable space S6 via the air supply port 22a. In this way, air is circulated between the living room 6 (temperature controllable space S6) and the air space S20, and the air space S20 can be efficiently heated.

[0059] This can suppress a drop in temperature of the first ceiling 21 and the second ceiling 22, and can bring the temperature of the first ceiling 21, etc. closer to that of the temperature controllable space S6. This can suppress condensation on the ceiling 20, for example, in winter, when performing heating operation.

[0060] Moreover, the air supply port 22a is provided at a position far from the branch duct 50 (on a diagonal line connecting the corners of the living room 6, see FIG. 2(b)). This makes it easier to supply warm air from the temperature controllable space S6 to a wide range of the air space S20, and makes it possible to heat the air space S20 more efficiently.

[0061] In this way, the ceiling system 10 can appropriately supply conditioned air A1 to the attic space S3 and the air space S20 and suppress the occurrence of condensation by appropriately controlling the switching between the attic communication state and the air space communication state, the opening and closing of the air intake port 22a, and the operation of the fan 40.

[0062] As described above, the air space S20 (installation portion) is used to install the wiring H of the device K installed in the second ceiling 22. This reduces the number of penetrations (e.g., holes for passing the wiring H) formed in the first ceiling 21, thereby suppressing the flow of moisture through the first ceiling 21.

[0063] As described above, the ceiling system 10 of the first embodiment comprises a first ceiling 21 having an attic space S3 formed above, a second ceiling 22 arranged at a distance below the first ceiling 21, forming an air space S20 (space portion) between the first ceiling 21 and an indoor space S5 below it, a switching valve 51 (switching unit) that can be switched to an attic communication state (first state) that connects the indoor space S5 and the attic space S3, or an air space communication state (second state) that connects the indoor space S5 and the air space S20, and a fan 40 (blower unit) that can generate an air flow from the indoor space S5 toward a space connected to the indoor space S5 by the switching valve 51.

[0064] By configuring in this manner, it is possible to switch between the attic communication state and the air space communication state to adjust the temperature of the attic space S3 and the air space S20 and reduce the humidity in the attic space S3, thereby suppressing the occurrence of condensation.

[0065] In addition, the ceiling system 10 further includes a control unit 60 that controls the switching between the attic communication state and the air space communication state and the operation of the fan 40 in accordance with specified information (e.g., the operating status of the air conditioner 6a, etc.).

[0066] By configuring in this manner, it is possible to take into consideration specified information and control the switching between the attic communication state and the air space communication state and the operation of the fan 40, thereby effectively suppressing the occurrence of condensation.

[0067] In addition, the indoor space S5 includes a temperature-controllable space S6 (first space) whose internal space can be cooled by cooling operation of an air conditioner 6a (cooling device), and when the air conditioner 6a performs cooling operation, the control unit 60 switches the switching valve 51 to the attic communication state and operates the fan 40 to supply air from the temperature-controllable space S6 to the attic space S3 (Figure 3).

[0068] By configuring in this way, it is possible to effectively suppress the occurrence of condensation.

[0069] The indoor space S5 also includes a temperature-controllable space S6 (third space) whose internal space can be heated by the heating operation of an air conditioner 6a (heating device), and when the air conditioner 6a performs heating operation, the control unit 60 switches the switching valve 51 to the air space communication state and operates the fan 40 to supply air from the temperature-controllable space S6 to the air space S20 (Figure 4).

[0070] By configuring in this way, it is possible to effectively suppress the occurrence of condensation.

[0071] In addition, the second ceiling 22 is provided with an air supply port 22a (first communication hole) that connects the temperature controllable space S6 and the air space S20 and allows air to flow from the air space S20 into the temperature controllable space S6.

[0072] With this configuration, when the air conditioner 6a performs heating operation, warm air is circulated between the air space S20 and the temperature controllable space S6, so that the air space S20 can be efficiently heated. This makes it possible to effectively suppress the occurrence of condensation.

[0073] In addition, an installation section is formed in the air space S20, where wiring H of the device K provided in the second ceiling 22 can be installed.

[0074] By configuring it in this manner, the number of through-holes formed in the first ceiling 21 can be reduced, and the flow of moisture through the first ceiling 21 can be suppressed.

[0075] The air space S20 according to the first embodiment is one embodiment of a spatial portion according to the present invention. Moreover, the switching valve 51 according to the first embodiment is one embodiment of a switching portion according to the present invention. Moreover, the fan 40 according to the first embodiment is one embodiment of a blower section according to the present invention. Moreover, the air conditioner 6a according to the first embodiment is one embodiment of the cooling device and the heating device according to the present invention. Moreover, the temperature controllable space S6 according to the first embodiment is one embodiment of the first space and the third space according to the present invention. Moreover, the air supply port 22a according to the first embodiment is one embodiment of a first communication hole according to the present invention.

[0076] Although the first embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0077] For example, the ceiling system 10 has been applied to the building 1 where people live, but the application of the ceiling system 10 is not particularly limited, and may be, for example, an office or the like.

[0078] In addition, the cooling device is assumed to be an air conditioner 6a, but the cooling device is not limited to the air conditioner 6a as long as it is a device that can lower the room temperature. In addition, the heating device is assumed to be an air conditioner 6a, but the heating device is not limited to the air conditioner 6a as long as it is a device that can raise the room temperature.

[0079] In the first embodiment, the air supply port 22a and the branch duct 50 are opened and closed by rotating the valve body, but the method for opening and closing the air supply port 22a etc. is not particularly limited.

[0080] In addition, a valve body (switching valve 51) provided in the branch duct 50 is used as a switching unit for switching between the attic communication state (FIG. 3) and the air space communication state (FIG. 4), but this configuration is not limited to this. For example, the switching unit (valve body) can be provided at any location such as the ceiling 20 or other members, without being provided in the branch duct 50. In this way, it is not necessary to provide a branch duct 50. In addition, the switching unit is not limited to a valve body, and any configuration capable of switching the attic communication state, etc. can be adopted.

[0081] In addition, although the fan 40 is installed in the second ceiling 22, the arrangement and number of the fan 40 are not particularly limited as long as it is possible to blow air downstream (the attic space S3 or the air space S20) depending on the attic communication state (Figure 3) and the air space communication state (Figure 4).

[0082] In the attic communication state (FIG. 3), as long as at least the temperature controllable space S6 and the attic space S3 are in communication with each other, the communication state of the other spaces is not particularly limited. For example, in the first embodiment, the communication between the temperature controllable space S6 and the air space S20 is released in the attic communication state, but this is not limited thereto, and the temperature controllable space S6 and the air space S20 may be in communication with each other.

[0083] In the air space communication state (FIG. 4), as long as at least the temperature controllable space S6 and the air space S20 are in communication with each other, the communication state of the other spaces is not particularly limited. For example, in the first embodiment, the communication between the temperature controllable space S6 and the attic space S3 is released in the air space communication state, but this is not limited thereto, and the temperature controllable space S6 and the attic space S3 may be in communication with each other.

[0084] Furthermore, the control unit 60 controls the on-off valve 30 etc. based on the operating state of the air conditioner 6a, but the information for determining whether to control the on-off valve 30 etc. is not particularly limited. The control unit 60 may control the on-off valve 30 etc. based on information such as the temperature and humidity of the attic space S3 and the temperature controllable space S6, the current date, etc.

[0085] For example, when controlling based on temperature and humidity, the control unit 60 can perform control similar to that of Fig. 3 when the temperature and humidity of the temperature controllable space S6 are lower than the temperature and humidity of the attic space S3 by a predetermined value or more. The control unit 60 can also perform control similar to that of Fig. 4 when the temperature and humidity of the temperature controllable space S6 are higher than the temperature and humidity of the attic space S3 by a predetermined value or more.

[0086] Furthermore, for example, when controlling based on the current date, the control unit 60 determines the season from the current date, and when the determined season is summer, etc., the control unit 60 can perform control similar to that of Fig. 3. Furthermore, when the determined season is winter, etc., the control unit 60 can perform control similar to that of Fig. 4.

[0087] In addition, although the ceiling system 10 is configured to automatically control the opening and closing valves 30, etc. using the control unit 60, this is not limited to this, and for example, a resident of the building 1 may control the opening and closing valves 30, etc. at any timing.

[0088] Moreover, the air space S20 has a height of 50 to 100 mm, but the height of the air space S20 is not particularly limited.

[0089] Next, a ceiling system 110 according to a second embodiment will be described.

[0090] The ceiling system 110 according to the second embodiment is significantly different from the ceiling system 10 according to the first embodiment in that it uses air not only in the temperature controllable space S6 but also in the temperature uncontrollable space S7 described below to suppress the occurrence of condensation. This will be described in detail below.

[0091] As shown in Figures 5 and 6(a), in the building 101 according to the second embodiment, a room 6 and a corridor 7 are separated left and right by a partition 5. The corridor 7 is located to the right of the room 6. The corridor 7 is not equipped with an air conditioner and is a space in which the temperature cannot be adjusted. Hereinafter, such a space in which the temperature cannot be adjusted (the internal space S7 of the corridor 7 in this embodiment) is referred to as a "space in which the temperature cannot be controlled." In this way, the indoor space S5 according to the second embodiment includes a temperature-controllable space S6 and a temperature-uncontrollable space S7.

[0092] The ceiling system 110 according to the second embodiment includes a ceiling 120, an on-off valve 130, a fan 140, a branch duct 150, and a control unit 160.

[0093] The ceiling 120 includes a first ceiling 121 and a second ceiling 122. The first ceiling 121 includes a ceiling surface material 121a configured similarly to the ceiling surface material 21a according to the first embodiment, a moisture-proof sheet 121b configured similarly to the moisture-proof sheet 21b according to the first embodiment, and a heat insulating material 121c configured similarly to the heat insulating material 21c according to the first embodiment (see FIGS. 1 and 5).

[0094] The second ceiling 122 is configured similarly to the second ceiling 122 according to the first embodiment, except for the arrangement of the air supply port 122a. The air supply port 122a is formed in a portion of the second ceiling 122 that faces the temperature uncontrollable space S7 (corridor 7). In this way, the air supply port 122a is provided so as to communicate between the temperature uncontrollable space S7 and the air space S120.

[0095] The on-off valve 130 is configured similarly to the on-off valve 30 according to the first embodiment.

[0096] The fan 140 is connected to the right end (the end branched out to the side) of the branch duct 150 described later. The fan 140 is provided in the air space S120, and is disposed above the temperature controllable space S6. The fan 140 is disposed to the left of the air supply port 122a (see FIG. 6(b)). The fan 140 can blow air from the corridor 7 side to the branch duct 150 side (from the right side to the left side) by rotating the blades in one direction. The fan 140 can blow air from the branch duct 150 side to the corridor 7 side (from the left side to the right side) by rotating the blades in the opposite direction to the one direction.

[0097] The branch duct 150 is provided at the left end of the ceiling 120. The branch duct 150 is provided so as to extend from the attic space S3 to the temperature controllable space S6 (room 6). The upper end of the branch duct 150 is formed so as to open in the attic space S3. The lower end of the branch duct 150 is formed so as to open in the temperature controllable space S6. The branch duct 150 is formed so as to branch off to the right midway between the top and bottom. The branched end (right end) is formed so as to open in the air space S120 and is connected to the fan 140. The branch duct 150 is equipped with a switching valve 151.

[0098] The switching valve 151 is for switching between communication and disconnection between the indoor space S5 and the attic space S3 and the air space S20 in the branch duct 150. The switching valve 51 can switch communication between the indoor space S5 and the attic space S3, etc., by rotating a valve body provided in the branch duct 50.

[0099] Specifically, by rotating the valve body in a predetermined direction (to close the lower portion), the switching valve 151 can communicate between the temperature uncontrollable space S7 and the attic space S3 via the air space S120, and can also disconnect the temperature controllable space S6 from the other spaces (the attic space S3 and the air space S120). In the second embodiment, this state (the state shown in FIG. 5) is referred to as the "attic communication state."

[0100] Moreover, by rotating the valve body in the direction opposite to the predetermined direction (to close the upper portion), the switching valve 151 can communicate between the air space S120 and the indoor space S5 (the temperature controllable space S6 and the temperature uncontrollable space S7) and can also disconnect the attic space S3 and the indoor space S5 (see FIG. 8). In the second embodiment, this state (the state shown in FIG. 8) is referred to as the "air space communication state."

[0101] The control unit 160 is configured in the same manner as the control unit 60 according to the first embodiment. That is, the control unit 160 detects the operating state of the air conditioner 6a based on a signal from the air conditioner 6a, and can control the on-off valve 130 and the like in accordance with the detection result.

[0102] Next, the operation of the ceiling system 110 will be described.

[0103] The ceiling system 110 operates differently depending on whether the air conditioner 6a in the living room 6 is in cooling operation or heating operation. First, the operation of the ceiling system 110 when the air conditioner 6a is in cooling operation will be described below with reference to FIG.

[0104] When the air conditioner 6a performs cooling operation, the control unit 160 sends a signal to the on-off valve 130 to open the air intake port 122a. The control unit 160 also sends a signal to the switching valve 151 of the branch duct 150 to switch to an attic communication state in which the temperature-controllable space S7 and the attic space S3 are connected to each other. The control unit 160 also sends a signal to the fan 140 to blow air. At this time, the fan 140 blows air from the corridor 7 side to the branch duct 150 side (from the right side to the left side).

[0105] As a result, the fan 140 generates an air flow from the temperature uncontrollable space S7 toward the attic space S3 via the branch duct 150. In this way, air flows from the temperature uncontrollable space S7 into the air space S120 via the air supply port 122a, and the air flows to the left through the air space S120. At this time, the air passes above the temperature controllable space S6. The air is then supplied to the attic space S3 via the branch duct 150.

[0106] With this configuration, the portion P101 of the ceiling surface material 121a of the first ceiling 121 located above the temperature controllable space S6, i.e., the portion whose temperature is likely to drop due to the effect of cooling operation, can be heated with air from the temperature non-controllable space S7. This makes it possible to prevent the air in the attic space S3 from falling below the dew point temperature even if the air passes through the insulating material 121c and comes into contact with the moisture-proof sheet 121b. This makes it possible to prevent condensation from occurring on the ceiling 120, for example, in the summer, when cooling operation is performed.

[0107] Next, with reference to FIG. 8, the operation of the ceiling system 110 when the air conditioner 6a performs heating operation will be described.

[0108] When the air conditioner 6a performs heating operation, the control unit 160 sends a signal to the on-off valve 30 to open the air supply port 122a. The control unit 160 also sends a signal to the switching valve 151 of the branch duct 150 to switch to an air space communication state in which the indoor space S5 and the air space S20 are connected to each other. The control unit 160 also sends a signal to the fan 140 to blow air. At this time, the fan 140 blows air from the branch duct 150 side to the corridor 7 side (from the left side to the right side).

[0109] As a result, fan 140 generates an air flow from temperature controllable space S6 toward air space S20, and supplies conditioned air A1 (warm air) to air space S20 via branch duct 150. This increases the pressure in air space S120, and air flows from air space S120 into temperature uncontrollable space S7 via air supply port 122a. At this time, conditioned air A1 from temperature controllable space S6 flows to the right through air space S120 and passes above temperature uncontrollable space S7.

[0110] With this configuration, the portion P102 of the ceiling surface material 121a of the first ceiling 121 located above the temperature uncontrollable space S7, i.e., the portion whose temperature is likely to drop when the air temperature is low (e.g., in winter), can be heated by the conditioned air A1 from the temperature controllable space S6. This makes it possible to prevent the air that comes into contact with the portion P102 from falling below the dew point temperature. This makes it possible to prevent condensation from occurring on the ceiling 120 when performing heating operation, for example, in winter, by using the conditioned air A1.

[0111] As described above, in the ceiling system 110 of the second embodiment, the indoor space S5 includes a temperature-controllable space S6 (first space) whose internal space can be cooled by the cooling operation of the air conditioner 6a (cooling device), and a temperature-uncontrollable space S7 (second space) different from the temperature-controllable space S6, and when the air conditioner 6a performs cooling operation, the control unit 160 switches the switching valve 51 to the attic communication state (first state) and operates the fan 140 to supply air from the temperature-uncontrollable space S7 to the attic space S3, and the air supplied to the attic space S3 flows from the temperature-uncontrollable space S7 through a portion P101 of the air space S120 located above the temperature-controllable space S6 and into the attic space S3 (Figure 7).

[0112] By configuring in this way, it is possible to effectively suppress the occurrence of condensation.

[0113] In addition, the indoor space S5 further includes a temperature-uncontrollable space S7 (fourth space) different from the temperature-controllable space S6 (third space) whose internal space can be heated by the heating operation of the air conditioner 6a, and the second ceiling 122 is provided with an air intake port 122a (second communication hole) that connects the temperature-uncontrollable space S7 to the air space S120.

[0114] With this configuration, when heating operation is performed, it is possible to create an air flow from the temperature controllable space S6 side to the temperature uncontrollable space S7 side in the air space S120. This makes it possible to warm the first ceiling 121 (above the temperature uncontrollable space S7) with warm air from the temperature controllable space S6, effectively suppressing the occurrence of condensation.

[0115] The temperature uncontrollable space S7 according to the second embodiment is one embodiment of the second space and the fourth space according to the present invention. Moreover, the air supply port 122a according to the second embodiment is one embodiment of a second communication hole according to the present invention.

[0116] Although the second embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0117] For example, the on-off valve 130 opens the air supply port 122a when the heating operation is performed, but the open / closed state during the heating operation is not particularly limited, and for example, the air supply port 122a may be closed.

[0118] In addition, the switching valve 151 disconnects the communication between the temperature controllable space S6 and the attic space S3 when the air conditioner 6a is operating in cooling mode (Figure 7), but there is no particular limitation on whether or not the temperature controllable space S6 and the attic space S3 are connected to each other during cooling operation.

[0119] In addition, the switching valve 51 disconnects the communication between the temperature controllable space S6 and the attic space S3 when the air conditioner 6a performs heating operation (Figure 8), but there is no particular limitation on whether or not to connect the temperature controllable space S6 and the attic space S3 during heating operation.

[0120] In the second embodiment, the temperature controllable space S6 and the temperature uncontrollable space S7 are arranged adjacent to each other, but the arrangement of the temperature controllable space S6 and the temperature uncontrollable space S7 is not particularly limited. The temperature controllable space S6 and the temperature uncontrollable space S7 may be arranged, for example, sandwiching the internal space of another room. When the control during heating operation (FIG. 8) is performed with such an arrangement, the upper part of the room between the temperature controllable space S6 and the temperature uncontrollable space S7 can be effectively heated. This makes it possible to effectively prevent condensation from occurring in the upper part of the room between the temperature controllable space S6 and the temperature uncontrollable space S7 on the ceiling 120. Even if the ceiling of the room does not have an air supply port (a hole portion communicating with the air space S120), the conditioned air A1 is encouraged to flow above the room, so that condensation can be effectively prevented from occurring above the room. [Explanation of symbols]

[0121] 10. Ceiling Systems 21 First ceiling 22 Second ceiling 40 Fan (blower) 51 Switching valve (switching part) S3 Attic space S5 interior space S20 Airspace

Claims

1. The first ceiling, on the upper side of which is formed an attic space; a second ceiling disposed below the first ceiling with a gap therebetween, forming a space between the second ceiling and the first ceiling and forming an interior space below the second ceiling; A switching unit that can be switched to a first state in which the indoor space and the attic space are connected to each other, or a second state in which the indoor space and the space are connected to each other; a blower unit capable of generating a flow of air from the indoor space toward a space that is connected to the indoor space by the switching unit; A control unit that controls switching between the first state and the second state and the operation of the blower unit in response to predetermined information; Equipped with The interior space includes: A first space is included, the interior space of which can be cooled by a cooling operation of a cooling device; The control unit is When the cooling device performs cooling operation, the switching unit is switched to the first state and the blower unit is operated to supply air from the first space to the attic space. Ceiling system.

2. A first ceiling on which an attic space is formed above; a second ceiling disposed below the first ceiling with a gap therebetween, forming a space between the second ceiling and the first ceiling and forming an interior space below the second ceiling; A switching unit that can be switched to a first state in which the indoor space and the attic space are connected to each other, or a second state in which the indoor space and the space are connected to each other; a blower unit capable of generating a flow of air from the indoor space toward a space that is connected to the indoor space by the switching unit; A control unit that controls switching between the first state and the second state and the operation of the blower unit in response to predetermined information; Equipped with The interior space includes: The cooling system includes a first space capable of cooling an interior space by a cooling operation of a cooling device, and a second space different from the first space, The control unit is When the cooling device performs cooling operation, the switching unit is switched to the first state and the blower unit is operated to supply air from the second space to the attic space, The air supplied to the attic space is The air flows from the second space through a portion of the space located above the first space and into the attic space. Ceiling system.

3. The interior space includes: A third space is included, the interior space of which can be heated by operating a heating device; The control unit is When the heating device performs a heating operation, the switching unit is switched to the second state and the blower unit is operated to supply air from the third space to the space portion. A ceiling system according to claim 1 or 2.

4. A first ceiling on which an attic space is formed above; a second ceiling disposed below the first ceiling with a gap therebetween, forming a space between the second ceiling and the first ceiling and forming an interior space below the second ceiling; A switching unit that can be switched to a first state in which the indoor space and the attic space are connected to each other, or a second state in which the indoor space and the space are connected to each other; a blower unit capable of generating a flow of air from the indoor space toward a space that is connected to the indoor space by the switching unit; A control unit that controls switching between the first state and the second state and the operation of the blower unit in response to predetermined information; Equipped with The interior space includes: A third space is included, the interior space of which can be heated by operating a heating device; The control unit is When the heating device performs a heating operation, the switching unit is switched to the second state and the blower unit is operated to supply air from the third space to the space portion. Ceiling system.

5. The second ceiling is a first communication hole that communicates the third space with the space portion and allows air to flow from the space portion into the third space; A ceiling system according to claim 3 or claim 4.

6. The interior space includes: Further included is a fourth space different from the third space; The second ceiling is A second communication hole communicating the fourth space with the space portion is provided. A ceiling system according to any one of claims 3 to 5.

7. The space includes: An installation section is formed in which wiring of equipment installed on the second ceiling can be installed. A ceiling system according to any one of claims 1 to 6.

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