JP2022124029A - ceiling system - Google Patents

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

The present invention relates to the technology of a ceiling system using fans.

Conventionally, the technology of a ceiling system using a blower is publicly known. For example, it is as described in Patent Document 1.

An air conditioning system (ceiling system) described in Patent Document 1 includes an air conditioner, a bidirectional air blower (blower), and the like. The air conditioner is installed in the attic space, is configured to adjust the temperature of the air taken in from the corridor, and supply the air to the living room. The bi-directional blower is provided in the underfloor space, and when the air conditioner performs cooling operation (for example, in summer), draws in the air in the living room and exhausts it to the underfloor space. The air is sent into the corridor from the underfloor space. Thus, the air conditioning system circulates air between the living room and the corridor via the air conditioner and the underfloor space, and can lower the temperature in the corridor.

Here, when the air conditioner performs cooling operation, the ceiling of the living room or the like cools down. When the air (humidity) in the attic space comes into contact with the ceiling, the air is cooled and condensation may occur in the attic space.

JP 2019-7688 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a ceiling system capable of suppressing the occurrence of dew condensation.

The problems to be solved by the present invention are as described above, and the means for solving the problems will now be described.

That is, in claim 1, a space is formed between a first ceiling having an attic space formed on the upper side thereof and the first ceiling being spaced apart below the first ceiling. A second state in which an indoor space is formed below the second ceiling, the indoor space and the attic space are communicated with each other, or a second state in which the indoor space and the space are communicated. and a blower unit capable of generating an air flow from the indoor space to the space communicated with the indoor space by the switching unit.

In claim 2, the apparatus further comprises a control section that controls switching between the first state and the second state and operation of the blower section according to predetermined information.

In claim 3, the indoor space includes a first space capable of cooling the internal space by a cooling operation of the cooling device, and the control unit controls, when the cooling device performs the cooling operation, the The switching unit is switched to the first state, and the air blowing unit is operated to supply air from the first space to the attic space.

In claim 4, the indoor space includes a first space capable of cooling the internal space by a cooling operation of a cooling device, and a second space different from the first space, and the control unit switches the switching unit to the first state, operates the blower unit, supplies air from the second space to the attic space, and supplies air to the attic space when the cooling device performs cooling operation. The air supplied to the second space circulates through a portion of the space located above the first space and flows into the attic space.

In claim 5, the indoor space includes a third space in which the internal space can be heated by a heating operation of a heating device, and the control unit controls the The switching unit is switched to the second state and the air blowing unit is operated to supply air from the third space to the space.

In claim 6, the second ceiling is provided with a first communication hole for communicating the third space and the space and allowing air to flow from the space to the third space. be.

In claim 7, the indoor space further includes a fourth space different from the third space, and the second ceiling has a second communication hole that communicates the fourth space and the space. It is equipped.

In claim 8, an installation portion is formed in the space portion to allow installation of wiring of equipment provided on the second ceiling.

As effects of the present invention, the following effects are obtained.

In claim 1, it is possible to suppress the occurrence of dew condensation.

In claim 2, it is possible to effectively suppress the occurrence of dew condensation.

In claim 3, it is possible to effectively suppress the occurrence of dew condensation.

In claim 4, it is possible to effectively suppress the occurrence of dew condensation.

In claim 5, it is possible to effectively suppress the occurrence of dew condensation.

In claim 6, it is possible to effectively suppress the occurrence of dew condensation.

In claim 7, it is possible to effectively suppress the occurrence of dew condensation.

In claim 8, it is possible to suppress the circulation of moisture through the first ceiling.

1 is a schematic diagram showing a building to which a ceiling system according to a first embodiment is applied; FIG. (a) A plan view showing an indoor space. (b) A plan view showing the positional relationship between the air supply port and the duct. FIG. 4 is a schematic diagram showing the operation of the ceiling system when the air conditioner performs cooling operation; FIG. 4 is a schematic diagram showing the operation of the ceiling system when the air conditioner performs heating operation; The schematic diagram which shows the building to which the ceiling system which concerns on 2nd embodiment was applied. (a) The top view which shows the indoor space which concerns on 2nd embodiment. (b) A plan view showing the positional relationship between the air supply port and the duct. The schematic diagram which shows the operation|movement of a ceiling system when an air conditioner performs cooling operation in 2nd embodiment. The schematic diagram which shows the operation|movement of a ceiling system when an air conditioner performs heating operation in 2nd embodiment.

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

The configuration of the building 1 in which the ceiling system 10 according to the first embodiment is installed will be briefly described below with reference to FIGS. 1 and 2(a).

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

The outer wall portion 2 is a portion forming the outer wall of the building 1 . The outer wall portion 2 is provided with a louver 2a that communicates an attic space S3, which will be described later, with a space outside the building 1. As shown in FIG. The roof part 3 is a part forming the roof of the building 1 . The floor part 4 is a part forming the floor of the building 1 . A space in the building 1 is partitioned into an attic space S3 and an indoor space S5 by a ceiling 20 of a ceiling system 10, which will be described later.

The attic space S3 is a space formed on the upper side (rear side) of the ceiling 20 (first ceiling 21). The indoor space S5 is a space formed below the ceiling 20 (second ceiling 22). The indoor space S<b>5 is partitioned into a plurality of spaces by the partition wall 5 . The indoor space S5 thus partitioned includes the internal space of a room used by people for a relatively long time (for example, living room 6, living room, etc.) and the room used by people for a relatively short time (e.g., corridor, washroom, etc.). contains the interior space of FIG. 2(a) shows, as an example of the indoor space S5, the internal space S6 of the living room 6 partitioned by the partition wall 5, and the like.

The living room 6 shown in FIGS. 1 and 2(a) is provided with an air conditioner 6a capable of adjusting the room temperature by cooling operation and heating operation. Below, of the indoor space S5, the space in which the room temperature can be adjusted by the air conditioner 6a (in this embodiment, the internal space S6 of the living room 6) is referred to as a "temperature controllable space".

Below, the ceiling system 10 according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG.

The ceiling system 10 is for suppressing the occurrence of dew condensation using the air in the indoor space S5 (the 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 controller 60 .

The ceiling 20 is a part forming the ceiling of the indoor space S5. A ceiling 20 (a first ceiling 21 and a second ceiling 22 to be described later) is provided so as to cover the entire area of the building 1 in plan view. Thus, the ceiling 20 partitions the inside of the building 1 into the attic space S3 and the indoor space S5. The ceiling 20 comprises a first ceiling 21 and a second ceiling 22 .

The first ceiling 21 is a portion forming the upper part of the ceiling 20 . The first ceiling 21 is arranged below the roof part 3 with a gap therebetween, and is provided so as to face the attic space S3. The first ceiling 21 comprises a ceiling surface material 21a, a moisture-proof sheet 21b and a heat insulating material 21c.

The ceiling panel 21a is a flat member. The ceiling surface member 21a is supported by a ceiling base (not shown) or the like, and is arranged with its plate surface directed in the vertical direction. The ceiling panel 21a is made of, for example, a gypsum board.

The moisture-proof sheet 21b is a sheet-like member that is difficult to permeate moisture. 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 moisture from flowing 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 panel 21a.

The heat insulating material 21c is a member through which heat is difficult to pass. 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 provided on the upper surface of the moisture-proof sheet 21b.

The second ceiling 22 is a portion forming the lower part of the ceiling 20 . The second ceiling 22 is formed in a substantially plate shape with the plate surface directed in the vertical direction. The second ceiling 22 is composed of, for example, a ceiling surface material (gypsum board or the like) and a heat insulating material (glass wool or the like) provided on the upper surface of the ceiling surface material (not shown). The second ceiling 22 is suspended from the first ceiling 21 by, for example, hardware. In this way, the second ceiling 22 is arranged downwardly with a gap from 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 50 to 100 mm, for example. The second ceiling 22 is provided so as to face the indoor space S5. The second ceiling 22 has an air supply port 22a.

The air supply port 22a is for connecting the indoor space S5 and the air space S20. The air supply port 22a is configured by a hole vertically penetrating the second ceiling 22 . As shown in FIGS. 1 and 2B, the air supply port 22a is formed in a portion of the second ceiling 22 facing the temperature controllable space S6 (living room 6). Thus, the air supply port 22a is provided so as to communicate the temperature controllable space S6 and the air space S20. The air supply port 22a is provided so as to open at the front right end of the living room 6 .

The second ceiling 22 configured as described above is provided with predetermined devices K (for example, lighting, fire alarms, etc.). The wiring H of the device K is installed in the air space S20. As described above, the air space S20 serves as an installation portion in which the wiring H of the device K can be installed, and in the first embodiment, the wiring H is installed using the installation portion. Note that the device K and the wiring H are omitted from FIG. 2 and subsequent drawings.

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 the valve body.

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 the opening of the second ceiling 22 (through hole different from the air supply port 22a), and is provided so as to be able to blow air from the temperature controllable space S6 to the downstream side (attic space S3, etc.). The fan 40 is arranged at the left rear end portion of the living room 6 in plan view (see FIG. 2(b)). Thus, the fan 40 is arranged on a diagonal line connecting the corners of the living room 6 in a plan view with respect to the air supply port 22a.

The branch duct 50 is for communicating the indoor space S5 with the attic space S3 and the air space S20. A lower left end portion of the branch duct 50 is connected to the fan 40 and communicated with the temperature controllable space S6 (indoor space S5) via the fan 40 . The branch duct 50 is formed to branch upward and to the right from the connection with the fan 40 . The upper end of the branch duct 50 is formed to open at the attic space S3. The right end (sideward branched end) of the branch duct 50 is formed to open at the air space S20. The branch duct 50 has a switching valve 51 .

In the branch duct 50, the switching valve 51 is for switching communication between the temperature controllable space S6 (indoor space S5), the attic space S3, and the air space S20, and disconnection of the communication. By rotating the valve body, the switching valve 51 can appropriately open and close the branch duct 50 to switch communication between the temperature controllable space S6 and the attic space S3.

Specifically, the switching valve 51 rotates the valve body in a predetermined direction (so as to close the branched portion to the right), thereby connecting the temperature controllable space S6 and the attic space S3, and Communication between the temperature controllable space S6 and the air space S20 can be released. In the first embodiment, such a state (the state shown in FIG. 1) is called an "attic communication state".

Further, the switching valve 51 releases communication between the temperature controllable space S6 and the attic space S3 by rotating the valve body in a direction opposite to the predetermined direction (so as to close the upward branching portion). At the same time, the temperature controllable space S6 and the air space S20 can be communicated (see FIG. 4). In the first embodiment, such a state (the state shown in FIG. 4) is called an "air space communication state".

The control unit 60 is for controlling the operations of the on-off valve 30 , the fan 40 and the switching valve 51 . The controller 60 is connected to the on-off valve 30, the fan 40, the switching valve 51 and the air conditioner 6a. By transmitting a signal to the on-off valve 30, the control unit 60 can operate the on-off valve 30 (rotate the valve body) to open and close the air supply port 22a. The control unit 60 can switch between driving and stopping the fan 40 by transmitting a signal to the fan 40 . By transmitting a signal to the switching valve 51, 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. The control unit 60 can acquire the operating state of the air conditioner 6a by receiving a signal from the air conditioner 6a.

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

The ceiling system 10 operates differently depending on whether the air conditioner 6a in the living room 6 is in cooling operation or in heating operation. The operation of the ceiling system 10 when the air conditioner 6a performs the cooling operation will be described first with reference to FIG.

First, the operation of the air conditioner 6a during the cooling operation will be briefly described. The air conditioner 6a sucks air from the temperature controllable space S6 and cools the air with a heat exchanger (not shown) when performing cooling operation. If the air is below the dew point temperature, the water vapor contained in the air becomes water droplets. The air conditioner 6a discharges the water droplets to the outside of the building 1 through a hose (not shown) or the like. In this way, the air conditioner 6a can supply the conditioned air A1 that is dehumidified (the amount of water vapor contained in the air is reduced) to the temperature controllable space S6 when performing the cooling operation.

Next, the operation of the ceiling system 10 during cooling operation will be described. The control unit 60 receives a signal from the air conditioner 6a when the air conditioner 6a performs cooling operation. The control unit 60 detects that the air conditioner 6a performs the cooling operation based on the signal. In this case, the controller 60 sends a signal to the on-off valve 30 to close 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 the attic communication state in which the temperature controllable space S6 and the attic space S3 are communicated. In addition, the control unit 60 transmits a signal to the fan 40 so that the fan 40 blows air.

As a result, the fan 40 supplies the conditioned air A1 to the attic space S3 via the branch duct 50 . As a result, the pressure in the attic space S3 is increased, and the air A2 remaining in the attic space S3, ie, non-dehumidified air, is discharged to the outside of the building 1 through the louvers 2a. As a result, the humidity in the attic space S3 can be reduced.

Also, 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, the ceiling surface material 21a of the first ceiling 21 is directly cooled by the conditioned air A1 (air is supplied from the temperature controllable space S6 to the air space S20) when the air conditioner 6a performs cooling operation. never. In this way, the air space S20 can be used as an air layer for heat insulation, so that the influence (temperature drop) on the ceiling panel 21a due to the cooling operation can be mitigated.

In this manner, the control unit 60 reduces the humidity in the attic space S3 and mitigates the temperature drop of the ceiling surface material 21a when the air conditioner 6a performs the cooling operation. As a result, even if the air (humidity) in the attic space S3 passes through the heat insulating material 21c and touches the moisture-proof sheet 21b, it is possible to prevent the air from falling below the dew point temperature. As a result, it is possible to suppress condensation on the ceiling 20 (moisture-proof sheet 21b) in the summer, for example, when the cooling operation is performed.

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

The control unit 60 receives a signal from the air conditioner 6a when the air conditioner 6a performs heating operation. The control unit 60 detects that the air conditioner 6a performs heating operation based on the signal. In this case, the controller 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 the air space communication state in which the temperature controllable space S6 and the air space S20 are communicated. In addition, the control unit 60 transmits a signal to the fan 40 so that the fan 40 blows air.

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

According to this, the temperature drop of the first ceiling 21 and the second ceiling 22 can be suppressed, and the temperature of the first ceiling 21 and the like can be brought closer to the temperature controllable space S6. Thereby, when performing heating operation, it can suppress that dew condensation generate|occur|produces on the ceiling 20, for example in winter.

In addition, the air supply port 22a is provided at a position far from the branch duct 50 (on the diagonal connecting the corners of the living room 6, see FIG. 2(b)). As a result, the warm air from the temperature controllable space S6 can be easily supplied to a wide range of the air space S20, and the air space S20 can be heated more efficiently.

In this manner, the ceiling system 10 appropriately controls the switching between the attic communication state and the air space communication state, the opening and closing of the air supply port 22a, and the operation of the fan 40, thereby allowing the conditioned air A1 to flow into the attic space. By appropriately supplying air to S3 and air space S20, it is possible to suppress the occurrence of dew condensation.

Further, as described above, the wiring H of the equipment K provided on the second ceiling 22 is installed using the air space S20 (installation portion). As a result, the number of penetrating portions (for example, holes for passing the wiring H) formed in the first ceiling 21 can be reduced, and the circulation of moisture through the first ceiling 21 can be suppressed.

As described above, the ceiling system 10 according to the first embodiment includes the first ceiling 21 in which the attic space S3 is formed on the upper side, and the first ceiling 21 which is arranged below the first ceiling 21 with an interval therebetween. A second ceiling 22 having an air space S20 (space portion) formed between it and the ceiling 21 and an indoor space S5 formed below itself, and an attic connecting the indoor space S5 and the attic space S3. A switching valve 51 (switching portion) capable of switching to a communicating state (first state) or an air space communicating state (second state) in which the indoor space S5 and the air space S20 are communicated, and from the indoor space S5, the and a fan 40 (blowing section) capable of generating an air flow toward the space communicated with the indoor space S5 by the switching valve 51 .

By configuring in this way, it becomes possible to control the temperature of the attic space S3 and the air space S20 and to reduce the humidity of the attic space S3 by switching the attic communication state and the air space communication state, thereby preventing the occurrence of dew condensation. can be suppressed.

In addition, the ceiling system 10 controls switching between the attic communication state and the air space communication state and the operation of the fan 40 according to predetermined information (for example, the operating state of the air conditioner 6a). A part 60 is further provided.

With this configuration, it is possible to effectively suppress the occurrence of dew condensation by controlling switching between the attic communication state and the air space communication state and the operation of the fan 40 in consideration of predetermined information. .

Further, the indoor space S5 includes a temperature controllable space S6 (first space) capable of cooling the internal space by the cooling operation of the air conditioner 6a (cooling device). performs cooling operation, the switching valve 51 is switched to the attic communication state and the fan 40 is operated to supply air from the temperature controllable space S6 to the attic space S3 (Fig. 3).

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

Further, the indoor space S5 includes a temperature controllable space S6 (third space) that can be heated by the heating operation of the air conditioner 6a (heating device). performs the heating operation, the switching valve 51 is switched to the air space communication state and the fan 40 is operated to supply air from the temperature controllable space S6 to the air space S20 (Fig. 4 ).

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

The second ceiling 22 communicates the temperature controllable space S6 and the air space S20, and an air supply port 22a (first communication hole).

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

Further, in the air space S20, an installation portion is formed in which the wiring H of the equipment K provided on the second ceiling 22 can be installed.

By configuring in this way, the number of penetrating portions formed in the first ceiling 21 can be reduced, and the circulation of moisture through the first ceiling 21 can be suppressed.

In addition, the air space S20 according to the first embodiment is an embodiment of the space portion according to the present invention.
Also, the switching valve 51 according to the first embodiment is an embodiment of the switching unit according to the present invention.
Also, the fan 40 according to the first embodiment is an embodiment of the blower unit according to the present invention.
Also, the air conditioner 6a according to the first embodiment is an 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 an embodiment of the first space and the third space according to the present invention.
Also, the air supply port 22a according to the first embodiment is an embodiment of the first communication hole according to the present invention.

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.

For example, the ceiling system 10 is applied to the building 1 for people to live in, but the application target of the ceiling system 10 is not particularly limited, and may be, for example, an office or the like.

Also, the cooling device is assumed to be the air conditioner 6a, but the cooling device is not limited to the air conditioner 6a as long as it can lower the room temperature. Also, the heating device is assumed to be the air conditioner 6a, but the heating device is not limited to the air conditioner 6a as long as it can raise the room temperature.

Further, in the first embodiment, the air supply port 22a and the branch duct 50 are opened and closed by turning the valve body, but the method for opening and closing the air supply port 22a and the like is not particularly limited.

Also, the valve element (switching valve 51) provided in the branch duct 50 was used as a switching unit for switching between the attic communication state (FIG. 3) and the air space communication state (FIG. 4), but the configuration is not limited to this. For example, the switching portion (valve element) can be provided at any location such as the ceiling 20 or other members without being provided in the branch duct 50 . Thus, the branch duct 50 does not necessarily have to be provided. Further, the switching part is not limited to the valve body, and any configuration that can switch the attic communication state or the like can be adopted.

In addition, the fan 40 is provided in the second ceiling 22, but the fan 40 is installed downstream (attic space S3 or air space S20) according to the attic communication state (Fig. 3) and the air space communication state (Fig. 4). The arrangement and number of the fans 40 are not particularly limited as long as the air can be blown to.

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, 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 the present invention is not limited to this, and the temperature controllable space S6 and the air space S20 are disconnected. They may be in communication.

Further, 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, the communication state of 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 the present invention is not limited to this. may communicate with.

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

For example, when performing control based on temperature and humidity, the control unit 60 performs the same operation as in FIG. control. Moreover, the control unit 60 can perform the same control as in 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.

Further, for example, when performing control based on the current date, the control unit 60 can determine the season from the current date, and perform the same control as in FIG. 3 when the determination result of the season is summer. can. Also, the control unit 60 can perform the same control as in FIG. 4 when the determination result of the season is winter.

In addition, although the ceiling system 10 automatically controls the opening/closing valve 30 and the like by the control unit 60, the control unit 60 is not limited to this. 30 or the like may be controlled.

Also, although the air space S20 has a height of 50 to 100 mm, the height of the air space S20 is not particularly limited.

Next, the ceiling system 110 according to the second embodiment will be described.

The ceiling system 110 according to the second embodiment is similar to the ceiling system according to the first embodiment in that dew condensation is suppressed by using not only the air in the temperature controllable space S6 but also the air in the temperature non-controllable space S7, which will be described later. Very different from 10. A specific description will be given below.

As shown in FIGS. 5 and 6A, a building 101 according to the second embodiment is partitioned into living rooms 6 and corridors 7 on the left and right by partition walls 5 . The corridor 7 is arranged on the right side of the living room 6 . The corridor 7 is not equipped with an air conditioner and is a space in which the temperature cannot be adjusted. Below, such a space whose temperature cannot be adjusted (in this embodiment, the internal space S7 of the corridor 7) is referred to as a "temperature-uncontrollable space". Thus, the indoor space S5 according to the second embodiment includes the temperature controllable space S6 and the temperature non-controllable space S7.

A 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 controller 160 .

Ceiling 120 comprises a first ceiling 121 and a second ceiling 122 . The first ceiling 121 includes a ceiling panel 121a configured similarly to the ceiling panel 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 first and a heat insulating material 121c configured similarly to the heat insulating material 21c according to the embodiment (see FIGS. 1 and 5).

The second ceiling 122 is configured in the same manner as 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 facing the temperature-uncontrollable space S7 (corridor 7). Thus, the air supply port 122a is provided so as to communicate the temperature uncontrollable space S7 and the air space S120.

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

The fan 140 is connected to the right end (sideward branched end) of a branch duct 150, which will be described later. The fan 140 is provided in the air space S120 and arranged above the temperature controllable space S6. Also, the fan 140 is arranged to the left of the air supply port 122a (see FIG. 6B). 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. Further, 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 direction opposite to the one direction.

Branch duct 150 is provided at the left end of ceiling 120 . Moreover, the branch duct 150 is provided so as to extend from the attic space S3 to the temperature controllable space S6 (living room 6). The upper end of the branch duct 150 is formed to open at the attic space S3. A lower end portion of the branch duct 150 is formed to open at the temperature controllable space S6. The branch duct 150 is formed so as to branch rightward at an upper-lower middle portion. The branched end (right end) is formed to open at the air space S120 and is connected to the fan 140 . The branch duct 150 has a switching valve 151 .

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

Specifically, the switching valve 151 rotates the valve body in a predetermined direction (so as to close the lower part), thereby connecting the temperature-uncontrollable space S7 and the attic space S3 through the air space S120. , the communication between the temperature controllable space S6 and other spaces (the attic space S3 and the air space S120) can be released. In the second embodiment, such a state (the state shown in FIG. 5) is called an "attic communication state".

In addition, the switching valve 151 rotates the valve body in a direction opposite to the predetermined direction (so as to close the upper portion) to switch between the air space S120 and the indoor space S5 (the temperature controllable space S6 and the temperature non-controllable space S7). , and the communication between the attic space S3 and the indoor space S5 can be released (see FIG. 8). In the second embodiment, such a state (the state shown in FIG. 8) will be referred to as an "air space communicating state".

The control unit 160 is configured similarly to the control unit 60 according to the first embodiment. That is, the control unit 160 can detect 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 according to the detection result.

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

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

The control unit 160 transmits a signal to the on-off valve 130 to open the air supply port 122a when the air conditioner 6a performs cooling operation. The control unit 160 also sends a signal to the switching valve 151 of the branch duct 150 to switch to the attic communication state in which the temperature-uncontrollable space S7 and the attic space S3 are communicated. In addition, the control unit 160 transmits a signal to the fan 140 so that the fan 140 blows 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).

As a result, the fan 140 generates an air flow from the temperature-uncontrollable space S7 to 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 through the air supply port 122a, and the air flows leftward through the air space S120. At this time, the air passes above the temperature controllable space S6. Then, the air is supplied to the attic space S3 via the branch duct 150 .

With such a configuration, of the ceiling surface material 121a of the first ceiling 121, the portion P101 located above the temperature controllable space S6, that is, the portion where the temperature tends to decrease due to the influence of the cooling operation, is removed from the temperature controllable space S7. can be warmed by the air of As a result, even if the air in the attic space S3 passes through the heat insulating material 121c and touches the moisture-proof sheet 121b, it is possible to prevent the air from falling below the dew point temperature. As a result, when the cooling operation is performed, it is possible to suppress condensation on the ceiling 120 in summer, for example.

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

The control unit 160 transmits a signal to the on-off valve 30 to open the air supply port 122a when the air conditioner 6a performs heating operation. Further, the control unit 160 sends a signal to the switching valve 151 of the branch duct 150 to switch to the air space communication state in which the indoor space S5 and the air space S20 are communicated. In addition, the control unit 160 transmits a signal to the fan 140 so that the fan 140 blows 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).

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. FIG. As a result, the pressure in the air space S120 increases, and air flows from the air space S120 into the temperature-uncontrollable space S7 via the air supply port 122a. At this time, the conditioned air A1 from the temperature controllable space S6 flows rightward through the air space S120 and passes over the temperature non-controllable space S7.

With such a configuration, of the ceiling surface material 121a of the first ceiling 121, the portion P102 located above the temperature-uncontrollable space S7, that is, the portion where the temperature tends to drop when the temperature is low (for example, in winter) is It can be warmed by the conditioned air A1 from the temperature controllable space S6. As a result, it is possible to prevent the air touching the portion P102 from falling below the dew point temperature. As a result, it is possible to suppress condensation on the ceiling 120 using the conditioned air A1 in the winter, for example, when the heating operation is performed.

As described above, the ceiling system 110 according to the second embodiment includes a temperature controllable space S6 (first space) in which the interior space can be cooled by the cooling operation of the air conditioner 6a (cooling device) in the indoor space S5. and a non-temperature-controllable space S7 (second space) different from the temperature-controllable space S6. While switching to the attic communication state (first state), the fan 140 is operated to supply air from the temperature-uncontrollable space S7 to the attic space S3. From the non-temperature-controllable space S7, the air flows through a portion P101 of the air space S120 located above the temperature-controllable space S6 and flows into the attic space S3 (FIG. 7).

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

Further, the indoor space S5 further includes a non-temperature-controllable space S7 (fourth space) different from the temperature-controllable space S6 (third space) in which the internal space can be heated by the heating operation of the air conditioner 6a. The second ceiling 122 has an air supply port 122a (second communication hole) that communicates the temperature-uncontrollable space S7 and the air space S120.

By configuring in this manner, in the air space S120, it is possible to create an air flow from the temperature controllable space S6 side to the temperature non-controllable space S7 side when the heating operation is performed. As a result, the warm air from the temperature controllable space S6 warms the first ceiling 121 (above the temperature non-controllable space S7), making it possible to effectively suppress the occurrence of dew condensation.

The temperature-uncontrollable space S7 according to the second embodiment is an embodiment of the second space and the fourth space according to the present invention.
Also, the air supply port 122a according to the second embodiment is an embodiment of the second communication hole according to the present invention.

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.

For example, the on-off valve 130 opens the air supply port 122a when performing the heating operation, but the opening/closing state during the heating operation is not particularly limited. good too.

Further, the switching valve 151 cancels the communication between the temperature controllable space S6 and the attic space S3 when the air conditioner 6a performs the cooling operation (Fig. 7). Whether or not to communicate with S3 is not particularly limited.

In addition, the switching valve 51 cancels the communication between the temperature controllable space S6 and the attic space S3 when the air conditioner 6a performs the heating operation (Fig. 8). Whether or not to communicate with S3 is not particularly limited.

Further, in the second embodiment, the temperature controllable space S6 and the temperature non-controllable space S7 are arranged adjacent to each other, but the arrangement of the temperature controllable space S6 and the temperature non-controllable space S7 is particularly limited. is not. For example, the temperature controllable space S6 and the temperature non-controllable space S7 may be arranged with the internal space of another room interposed therebetween. If control during heating operation (FIG. 8) is performed in such an arrangement, the upper part of the room between the temperature controllable space S6 and the temperature non-controllable space S7 can be effectively heated. As a result, it is possible to effectively prevent dew condensation from forming in the ceiling 120 above the room between the temperature controllable space S6 and the temperature non-controllable space S7. Further, even if the ceiling of the room does not have an air supply port (a hole communicating with the air space S120), the conditioned air A1 is encouraged to flow above the room. It is possible to effectively suppress the formation of condensation on the upper side.

10 ceiling system 21 first ceiling 22 second ceiling 40 fan (air blower)
51 switching valve (switching part)
S3 Attic space S5 Indoor space S20 Air space

Claims (8)

a first ceiling on which an attic space is formed;
a second ceiling arranged below the first ceiling with a gap therebetween, forming a space between the ceiling and the first ceiling, and forming an indoor space below the second ceiling;
a switching unit capable of switching to a first state in which the indoor space and the attic space are communicated, or a second state in which the indoor space and the space are communicated;
a blowing unit capable of generating an air flow from the indoor space to a space communicated with the indoor space by the switching unit;
comprising a
ceiling system. Further comprising a control unit that controls switching between the first state or the second state and operation of the blower unit according to predetermined information,
The ceiling system of claim 1. In the indoor space,
Includes a first space that can cool the internal space by cooling operation of the cooling device,
The control unit
When the cooling device performs cooling operation, the switching unit is switched to the first state and the blowing unit is operated to supply air from the first space to the attic space.
A ceiling system according to claim 2. In the indoor space,
A first space capable of cooling the internal space by cooling operation of the cooling device, and a second space different from the first space,
The control unit
When the cooling device performs cooling operation, the switching unit is switched to the first state and the blowing unit is operated to supply air from the second space to the attic space;
The air supplied to the attic space is
Flows from the second space into the attic space through a portion of the space located above the first space,
A ceiling system according to claim 2. In the indoor space,
Includes a third space that can warm the internal space by heating operation of the heating device,
The control unit
When the heating device performs heating operation, the switching unit is switched to the second state and the blowing unit is operated to supply air from the third space to the space.
Ceiling system according to any one of claims 2 to 4. The second ceiling is
A first communication hole for communicating the third space and the space and allowing air to flow from the space to the third space,
A ceiling system according to claim 5 . In the indoor space,
further comprising a fourth space different from the third space;
The second ceiling is
comprising a second communication hole that communicates the fourth space and the space,
A ceiling system according to claim 5 or claim 6. In the space part,
An installation portion is formed in which wiring of equipment provided on the second ceiling can be installed,
Ceiling system according to any one of claims 1 to 7.

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