JP6511344B2 - Building air conditioning - Google Patents

Description

  The present invention relates to a building air conditioner.

  A building such as a house may be provided with an air conditioning and ventilation system for air conditioning and ventilation in the building. For example, Patent Document 1 discloses a configuration in which a heat insulation area and a non-heat insulation area are provided inside a building, an air conditioner is provided in the heat insulation area, and a ventilator is provided in the non heat insulation area. There is. As described above, various proposals have been made for efficiently arranging the air conditioner and the ventilator in a building. In buildings, not only the combination of the air conditioner and the ventilating device but also the combination of the air conditioner and the other devices are considered to be arranged without complication.

  Moreover, while providing a 1st ceiling facing material in a usual ceiling height position, providing a 2nd ceiling facing material below it, a cabin back space, a 1st ceiling facing material, In a building in which the space between the ceiling materials is lowered to form a ceiling space, an air conditioner may be provided in the attic space, and a ventilation device may be provided in the falling ceiling space. In this case, it is conceivable to provide a chamber above the first ceiling material to blow out conditioned air to the indoor space below it.

JP, 2014-134295, A

  However, in the building having the falling ceiling space as described above, in addition to blowing the conditioned air to the indoor space other than below the falling ceiling space, the conditioned air is blown to the indoor space below the falling ceiling space In this case, the presence of the falling ceiling space is considered to make it difficult to realize the configuration for the conditioned air blowing. That is, when the conditioned air is blown out into indoor spaces other than below the falling ceiling space, a chamber may be provided in the cabin back space and the conditioned air may be blown out through the chamber, whereas in the falling ceiling space In the case where the conditioned air is blown into the lower indoor space, for example, the height of the chamber is lowered and the chamber can not be installed because the height of the chamber is larger than the height of the ceiling space.

  In addition, generally the indoor space below the falling ceiling space is often used as a non-living room such as a washroom or a dressing room, and for that non-living room, blowing out of conditioned air is carried out except for individual air conditioning. It is not the current situation.

  The present invention has been made in view of the above circumstances, and it is a main object of the present invention to provide a building air conditioner capable of properly supplying conditioned air even in an indoor space below a lowered ceiling space. is there.

  Hereinafter, means, etc. effective for solving the above-mentioned problems will be described while showing actions, effects and the like as necessary. In the following, for ease of understanding, the reference numerals of the corresponding configurations in the embodiment of the invention are appropriately shown in parentheses, but the present invention is not limited to the specific configurations shown in the parentheses, etc.

In the first invention, a chamber (43) to which conditioned air is supplied from an air conditioner (41) via an air conditioning duct (42) is provided on a first ceiling panel (27), and the chamber is used Air conditioning equipment of a building (10), wherein the conditioned air is blown out into the indoor space below the first ceiling surface material,
A second ceiling facing (33) provided below the first ceiling facing and forming a ceiling space (36) between the first ceiling facing and the first ceiling facing;
A chamber expansion member (60) which is provided in the lowered ceiling space, whose upper end communicates with the chamber on the first ceiling panel and whose lower end communicates with the blowout member (44) provided on the second ceiling panel. )When,
And the like.

  In the above configuration, a chamber expansion member is provided in the lowered ceiling space, and the chamber expansion member communicates the chamber on the first ceiling surface material and the blowout member provided on the second ceiling surface material. Therefore, when the conditioned air is supplied from the air conditioning apparatus, the conditioned air is blown out to the indoor space below the lowered ceiling space through the air conditioning duct, the chamber, and the chamber expansion member.

  In this case, by providing the chamber expanding member in the down ceiling space, the down chamber can be moved down with a simple configuration while keeping the same in each chamber regardless of which indoor space the air conditioning air is blown out. It is possible to enable the blowing of conditioned air. Moreover, since it is not necessary to provide an air conditioning duct in the down ceiling space, it is possible to prevent the accommodation in the down ceiling space from becoming complicated. As a result, it is possible to properly supply the conditioned air also in the indoor space below the falling ceiling space.

  The second invention is applied to a building provided in the lowered ceiling space and provided with a ventilating device (51) for ventilating the indoor space, and the chamber expansion member is provided on the side of the ventilating device in the lowered ceiling space. It is characterized by

  In the above configuration, when the ventilating device is provided in the lowered ceiling space, it is possible to suppress the inconvenience that the arrangement of the ventilation duct and the air conditioning duct in the lowered ceiling space becomes complicated.

  The third invention is characterized in that the height dimension of the chamber is larger than the height dimension of the lowered ceiling space.

  If the height dimension of the chamber falls and is larger than the height dimension of the ceiling space, the chamber can not be lowered and can not be accommodated in the ceiling space, but even in such a case, the indoor space below the ceiling space On the other hand, air conditioning air can be blown out.

  In a fourth aspect of the invention, the upper end of the chamber expansion member connected to the chamber is provided with an air-tight member (73) for blocking the flow of air at the connection between the chamber and the chamber expansion member. It is characterized by

  Since the airtight member is provided at the upper end portion of the chamber expansion member to be a connection portion with the chamber, the airtight leakage at the connection portion between the chamber and the chamber expansion member can be prevented. Thus, the air conditioning performance can be maintained.

  In a fifth aspect of the present invention, the chamber is fixed to an upper base material (71) provided on the upper side of the first ceiling panel, and the chamber expansion member is fixed to the lower side of the first ceiling panel. It is characterized in that it is fixed to the provided lower base material (72).

  The chamber and the chamber expansion member are respectively fixed to the base material provided on the upper side and the lower side of the first ceiling panel. According to this configuration, when installing the falling ceiling and attaching the chamber expansion member, the second ceiling material may be attached after the chamber and the chamber expansion member are fixed to the upper first ceiling material. The work is easy to carry out.

  The sixth invention is a building having a living room (17) and a non-living room (16), wherein a ceiling material of the non-living room is the second ceiling material, and the lowered ceiling space is formed above it. The conditioned air may be blown out to the non-living room through the chamber and the chamber expansion member.

  Buildings such as houses have non-living rooms such as washrooms, dressing rooms, and corridors in addition to living rooms. According to the above configuration, air conditioning can be suitably performed even on the non-residential room in which the lowered ceiling space is formed.

The longitudinal cross-sectional view which shows the structure of the second floor part of a building. The longitudinal cross-sectional view which shows the structure of a chamber and a chamber expansion member. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the outline | summary of a unit-type building. The perspective view which shows the structure of a building unit.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the present invention is embodied in a unit type building of a steel frame rigid frame structure constructed using a plurality of building units. FIG. 3 is a perspective view showing an outline of a unitary building, and FIG. 4 is a perspective view showing the structure of a building unit 20. As shown in FIG.

  As shown in FIG. 3, a building 10 such as a house includes a building main body 12 provided on a foundation 11 and a roof portion 13 provided thereon. The building body 12 is two-storey having a first floor portion 14 as a lower floor portion and a second floor portion 15 as an upper floor portion, and is configured by connecting a plurality of building units 20 to each other. The building unit 20 is manufactured in advance in a manufacturing plant, and then transported to a construction site by a truck or the like. In addition, the roof portion 13 is configured as an inclined roof of any type, such as a gable type or a ridge type.

  A perspective view of the building unit 20 is shown in FIG. As shown in FIG. 4, the building unit 20 includes four columns 21 disposed at the four corners, and four ceiling beams 22 and floor beams 23 connecting the upper end and the lower end of each column 21 respectively. And have. A rectangular parallelepiped frame (frame) is formed by the columns 21, the ceiling girder 22 and the floor girder 23. The column 21 is made of a square cylindrical square steel. The ceiling girder 22 and the floor girder 23 are made of channel steel having a U-shaped cross section, and are installed with their openings facing each other. In the ceiling girder 22 (specifically, its web), a beam through hole 22a is provided at a plurality of locations.

  A plurality of ceiling beams 25 are bridged at predetermined intervals between opposing ceiling beams 22 at long sides of the building unit 20. Similarly, a plurality of floor beams 26 are bridged at predetermined intervals between opposing floor beams 23 at long sides of the building unit 20. The ceiling girder 25 and the floor girder 26 are provided at the same intervals and at positions corresponding to the upper and lower sides, respectively. For example, the ceiling beam 25 is made of lip channel steel and the floor beam 26 is made of square steel. A ceiling panel 27 (more specifically, an upper ceiling panel 27 described later) is supported by the ceiling panel beam 25, and a floor panel 28 is supported by the floor panel beam 26.

  Subsequently, the configuration of the second floor portion 15 of the building 10 will be described based on FIG. FIG. 1 is a longitudinal sectional view showing the configuration of the second floor portion 15. As shown in FIG.

  As shown in FIG. 1, a washroom 16 and a living room 17 are provided in the second floor portion 15 as an indoor space. The washroom 16 is separated from the outside by the outer wall portion 31. The washroom 16 corresponds to a non-living room. The living room 17 is separated from the washroom 16 by a partition wall 32. The washroom 16 may be provided adjacent to a bathroom (not shown), and when the washroom 16 is adjacent to the bathroom, the washroom 16 may be used as a dressing room. In addition, while providing an entrance / exit in the partition wall 32, it is set as the structure which provides a door in the entrance / exit, You may make the washroom 16 and the living room 17 back and forth via the entrance / exit.

  The washroom 16, the living room 17, and other indoor spaces not shown are formed by a plurality of building units 20 provided side by side. In this case, for example, the washroom 16 and the living room 17 are respectively formed by different building units.

  Subsequently, the configuration of the ceiling portion of the second floor portion 15 will be described.

  An upper ceiling surface material 27 is provided as a ceiling surface material on the ceiling portion of the second floor portion 15, and a lower ceiling surface material 33 (corresponding to a falling ceiling) disposed below the upper ceiling surface material 27 is provided. ing. The upper ceiling panel 27 and the lower ceiling panel 33 are both made of gypsum board. The upper ceiling covering material 27 is provided on each ceiling of the washroom 16 and the living room 17 (in other words, the ceiling of each building unit 20). The upper ceiling surface material 27 is supported from above by a not-shown field edge provided on the lower surface of the ceiling girder 22 and the ceiling girder 25 (see FIG. 4).

  The lower ceiling panel 33 is provided in the washroom 16. The lower ceiling panel 33 is supported in a state of being bridged between the outer wall 31 and the partition wall 32 facing each other across the washroom 16. Although the support structure of the lower ceiling panel 33 may be arbitrary, for example, a base frame is stretched between the outer wall portion 31 and the partition wall 32, and the lower ceiling panel 33 is provided on the lower surface side of the base frame. It is attached.

  As described above, by arranging the upper ceiling surface material 27 and the lower ceiling surface material 33, the ceiling surface is formed by the upper ceiling surface material 27 for the living room 17, and the lower ceiling surface material for the washroom 16 A ceiling surface is formed by 33. Therefore, the washroom 16 is a low ceiling space where the ceiling height is lower than that of the living room 17, while the living room 17 is a high ceiling space where the ceiling height is higher than the washroom 16. ing.

  A cabin back space 35 is formed above the upper ceiling panel 27 below the obliquely extending roofing material 13a. Further, a lowered ceiling space 36 is formed between the upper ceiling surface material 27 and the lower ceiling surface material 33. The buttock space 35 and the falling ceiling space 36 are vertically divided by the upper ceiling surface material 27. In addition, although the heat insulating material which consists of glass wool etc. is laid on the upper ceiling surface material 27 in the attic space 35, illustration is abbreviate | omitted here.

  In the building 10, an air conditioning system 40 for indoor air conditioning of the second floor portion 15 and a ventilation system 50 for indoor ventilation of the second floor portion 15 are provided. The configurations of the air conditioning system 40 and the ventilation system 50 will be described below.

  First, the configuration of the air conditioning system 40 will be described. The air conditioning system 40 includes an air conditioner 41 that generates conditioned air (warm air and cold air), a plurality of air conditioning ducts 42 connected to the air conditioner 41, and a plurality of chambers 43 connected to the respective air conditioning ducts 42 There is. The air conditioner 41 is configured as an indoor unit installed in the attic space 35. The air conditioner 41 takes in air in a corridor or the like (not shown) as return air, and generates conditioned air based on the return air. Then, the air conditioner 41 supplies the generated air conditioning air to the air conditioning duct 42.

  Specifically, as the installation structure of the air conditioner 41, a support plate 37 is attached by a bracket or the like to the pair of ceiling large beams 22 facing each other in the building unit 20, and the air conditioner 41 is placed on the support plate 37 It is done.

  One end of the air conditioning duct 42 is connected to the air conditioner 41, and the other end is connected to the chamber 43. The air conditioning duct 42 is composed of a flexible duct that has thermal insulation performance and can be bent. In FIG. 1, the air conditioning duct 42 is shown in a straight line for the sake of convenience. The chambers 43 are respectively provided in the indoor space to be air-conditioned to blow out the conditioned air as the charge air SA, and are installed on the upper ceiling surface material 27 above the indoor space. The chamber 43 is in the form of a vertical box, and has a rectangular opening at its lower end. The air conditioning duct 42 is connected to one side surface of the chamber 43.

  For example, the room 17 is capable of blowing out the air supply SA from the upper ceiling material 27, and the upper ceiling material 27 is provided with a blowing grill 44 on the lower end side of the chamber 43. When the air conditioner 41 is operated, the conditioned air generated by the air conditioner 41 is supplied to the chamber 43 via the air conditioning duct 42, and the conditioned air is blown out from the blowout grill 44 toward the living room 17.

  Further, in the building 10 according to the present embodiment, the washroom 16 is also an indoor space to be air-conditioned, and the blowout of the air supply SA to the washroom 16 is enabled. However, since the configuration is different from that of the living room 17, the configuration of the blowout of the air supply SA in the washroom 16 will be described later.

  Subsequently, the configuration of the ventilation system 50 will be described. The ventilation system 50 includes a ventilation device 51 and a plurality of ducts 52 to 54 connected to the ventilation device 51. The ventilating device 51 is installed on the lower ceiling panel 33 in the lower ceiling space 36 above the washroom 16.

  An air supply duct 52 communicating with the indoor space to be ventilated, an intake duct 53 communicating with the outside, and an exhaust duct 54 are connected to the ventilating device 51. The intake duct 53 and the exhaust duct 54 are respectively inserted into the insertion holes 31 a formed in the outer wall portion 31. In FIG. 1, the intake duct 53 and the exhaust duct 54 are shown as one duct, but the ducts 53 and 54 are arranged side by side in the paper depth direction. Further, a suction grille 55 connected to the ventilation device 51 is provided on the lower ceiling panel 33 at a position below the ventilation device 51.

  In addition, in order that air may be taken in and out between building exteriors, it is possible that ventilating apparatus 51 is provided in the outer wall vicinity. In this case, in the configuration having the inclined roof as the roof portion 13, it is desirable to provide the ventilation device 51 in the falling ceiling space 36 in order to provide the duct opening in the lower part of the eaves without difficulty.

  The ventilator 51 has an intake fan and an exhaust fan (not shown) therein. When the intake fan operates, outdoor air (outside air) is taken into the ventilation device 51 through the intake duct 53, and the taken-in air is taken into each indoor space to be ventilated through the air supply duct 52. Supplied. In addition, when the exhaust fan is activated, the air (inside air) of the washroom 16 is sucked into the ventilation device 51 through the suction grill 55, and the sucked air is discharged to the outside through the exhaust duct 54 from the ventilation device 51. Ru. In this way, ventilation of the indoor space is performed.

  Next, the configuration of the blowout of the air supply SA for air conditioning in the washroom 16 will be described.

  A falling ceiling space 36 is formed above the washroom 16, and the chamber 43 installed on the upper ceiling material 27 and the lower ceiling material 33 from which the air supply SA is blown out are vertically formed. There is a gap between Therefore, in the present embodiment, the chamber expansion member 60 is connected to the lower side of the chamber 43, and the supply of conditioned air to the washroom 16, that is, the blowing of the supply air SA is performed via the chamber expansion member 60. There is.

  FIG. 2 is a longitudinal sectional view showing the configuration of the chamber expansion member 60. As shown in FIG. In FIG. 2, the chamber 43 is installed on the upper ceiling panel 27 so that the opening at the lower end thereof communicates with the opening 27 a formed in the upper ceiling panel 27. In this case, the base frame 71 is provided on the upper side of the upper ceiling panel 27, and the chamber 43 is fixed to the base frame 71 with a screw (for example, a resin screw) or the like. A chamber 43 is installed on top of 27. This structure itself is similar to the chamber 43 provided above the living room 17. However, as a difference between the room 17 side and the washroom 16 side, the outlet grill 44 is connected to the lower end of the chamber 43 in the room 17 side, while the chamber expansion member is connected to the lower end of the outlet grill 44 in the washroom 16 side. 60 are connected. The chamber 43 and the chamber expansion member 60 may be made of the same material, for example, metal or synthetic resin.

  The chamber expansion member 60 has a main body 61 having the same vertical dimension as the height dimension H 1 of the lowered ceiling space 36 and a connection 62 extending upward from the main body 61. The cross section of the main body 61 is rectangular like the lower end of the chamber 43, and the size of the cross section is also substantially the same as the lower end of the chamber 43.

  Further, the connection portion 62 is formed to have a size smaller than that of the main body portion 61. Then, the connection portion 62 is assembled from the opening side of the chamber 43, so that the wall portion of the chamber 43 and the connection portion 62 overlap inside and outside, and in such a state, the foundation frame provided below the upper ceiling surface material 27 The chamber expansion member 60 is fixed to the member 72 by a screw (for example, a resin screw) or the like. A packing 73 as an airtight member is attached to the outer side of the base frame 72 so as to surround the upper end portion of the chamber expansion member 60 in order to ensure the airtightness of the connection portion between the chamber 43 and the chamber expansion member 60.

  In a state in which the chamber expansion member 60 is fixed to the upper ceiling surface material 27, the lower ceiling surface material 33 is attached along the lower end surface of the chamber expansion member 60. In this case, a packing 74 as an airtight member is attached between the lower end surface of the chamber expansion member 60 and the lower ceiling surface member 33, and the packing 74 makes the airtightness of the lower end portion of the chamber expansion member 60 It is secured. Further, a blowout grill 44 is provided at the lower end side of the chamber expansion member 60 in the lower ceiling panel 33.

  At the time of construction of the air conditioning equipment in the falling ceiling space 36, the chamber 43 is fixed to the base frame 71 above the upper ceiling surface material 27, and then the chamber against the base frame 72 below the upper ceiling surface material 27. The expansion member 60 is fixed. At this time, an airtight process by the packing 73 is performed. Thereafter, the lower ceiling panel 33 is attached with the packing 74 interposed between the lower surface of the chamber expansion member 60 and the lower surface. Furthermore, a blowout grill 44 is provided on the lower ceiling panel 33.

  In the configuration of FIG. 2, when the conditioned air generated by the air conditioner 41 is supplied to the chamber 43 via the air conditioning duct 42, the conditioned air further flows downstream via the chamber expansion member 60. Then, it is blown out from the blowout grill 44 toward the washroom 16 as the supply air SA.

  In addition, since the height dimension H1 of the falling ceiling space 36 is smaller than the height dimension H2 of the chamber 43, the chamber 43 can not be lowered and accommodated in the ceiling space 36 itself. However, in the construction of the building 10, the same air conditioning as that of the living room 17 is performed even in the washroom 16 having the lowered ceiling portion while the chambers 43 themselves use the existing construction.

  According to the embodiment described above, the following excellent effects can be obtained.

  In the above configuration, by providing the chamber expansion member 60 in the lowered ceiling space 36, the arrangement of each chamber 43 is made the same regardless of which indoor space the air-conditioned air is blown out, and a simple configuration is supported. Air conditioning air can be blown out to the falling ceiling space 36. In addition, since it is not necessary to provide the air conditioning duct 42 in the falling ceiling space 36, it is possible to prevent the accommodation in the falling ceiling space 36 from becoming complicated. As a result, it is possible to properly supply the conditioned air also in the indoor space below the falling ceiling space 36.

  In the configuration in which the ventilating device 51 is provided in the lowered ceiling space 36, the chamber expanding member 60 is provided on the side of the ventilating device 51. In this case, it is possible to suppress the inconvenience that the arrangement of the ventilation ducts 52 to 54 and the air conditioning duct 42 in the lower ceiling space 36 becomes complicated.

  If the height dimension of the chamber 43 falls and is larger than the height dimension of the ceiling space 36, the chamber 43 can not be lowered and can not be accommodated in the ceiling space 36. Air conditioning air can be blown out to the lower indoor space.

  Since the packing 73 is provided on the upper end portion of the chamber expansion member 60 which is a connection portion with the chamber 43, airtight leakage in a connection portion between the chamber 43 and the chamber expansion member 60 can be prevented. Thus, the air conditioning performance can be maintained.

  The chamber 43 and the chamber expansion member 60 are fixed to the base frames 71 and 72 respectively provided on the upper side and the lower side of the upper ceiling panel 27. In this case, the lower ceiling surface member 33 may be attached after the chamber 43 and the chamber extension member 60 are fixed to the upper ceiling surface member 27 when the falling ceiling is installed and the chamber extension member 60 is attached. The work is easy to carry out.

  In the building 10, the air supply SA (air conditioning air) can be blown out to the washroom 16 formed below the falling ceiling space 36. In this case, the heat shock in the washroom 16 can be reduced by enabling the heating and cooling of the washroom 16.

[Other embodiments]
The present invention is not limited to the contents described in the above embodiment, and may be implemented, for example, as follows.

  The configuration of the chamber expansion member 60 may be changed as follows. For example, in the chamber expansion member 60, the opening cross section of the lower portion is configured to be expanded more than the opening cross section of the upper portion, or the opposite configuration. Further, in the chamber expansion member 60, the flow path is inclined with respect to the vertical direction. Further, in the lower part of the chamber expansion member 60, the flow path is branched into a plurality of parts.

  The height dimension of the falling ceiling space 36 may not be uniform, and different height dimensions may be set. Even if the height dimension of the falling ceiling space 36 is different, the chambers 43 provided on the upper ceiling surface material 27 may have the same configuration and fit, and can be dealt with by appropriately using the chamber expansion member 60. .

  -It is also possible to provide devices other than the ventilation device 51 in the falling ceiling space 36. For example, storage and distribution equipment may be provided as home energy related equipment.

  The non-living room in which the lowered ceiling is formed may be a dressing room, a corridor or the like other than the washroom. In this case, by providing a chamber expansion member in the lower ceiling space as well, it is preferable to enable air conditioning and heating for the dressing room and the corridor.

  -Although the said embodiment demonstrated the unit type building, it is not limited to this, It is applicable also to the building of another construction method. For example, the present invention can be applied to a building constructed by a steel frame construction method or a building constructed by a wooden conventional construction method.

  DESCRIPTION OF SYMBOLS 10 ... Building, 16 ... Washroom (non-living room), 17 ... Living room, 27 ... Upper ceiling material (1st ceiling material), 33 ... Lower ceiling material (2nd ceiling material), 36 ... Falling ceiling Space: 41: air conditioner, 42: air conditioning duct, 43: chamber, 44: blowout grill (blowing member), 51: ventilation device, 60: chamber expansion member, 71, 72: base frame (base material), 73: packing (Airtight member).

Claims (7)

There is a first indoor space and a second indoor space having different ceiling heights, and in the first indoor space, a ceiling is constituted by the first ceiling surface material, and in the second indoor space, the ceiling surface material is constituted by the first ceiling surface material The ceiling is constituted by the second ceiling facing provided at a lower position, and the first ceiling facing is also provided at a position above the second ceiling facing, the first ceiling facing It is an air conditioner applied to a building in which a ceiling space is formed between a wood material and the second ceiling material,
A chamber in which conditioned air is supplied from an air conditioner via an air conditioning duct at a position above the first ceiling material and above the first indoor space and above the second indoor space Are provided respectively,
In the ceiling of the first indoor space, the conditioned air is blown out from a blowing member provided at the lower end of the chamber,
In the ceiling of the second indoor space, the conditioned air is blown out through a chamber expansion member provided in the lowered ceiling space and having an upper end connected to the chamber, and a blowout member provided in the lower end of the chamber expansion member. Air conditioning equipment in the building to be characterized. A building unit having a rectangular parallelepiped shape and having four pillars standing at four corners and a ceiling girder and a floor girder connected to the pillars, and a plurality of the building units being combined Applies to united buildings being built,
In the plurality of building units, the first ceiling covering material is fixed on the lower surface side of the ceiling girder, and the first ceiling covering material of each building unit to be air conditioned among the plurality of building units is mounted on the first ceiling covering material Each chamber is provided
A falling ceiling space is formed between the first ceiling surface material and the second ceiling surface material fixed below the first ceiling surface material in any of the building units to be air conditioned, and the lowering ceiling The building air conditioning system according to claim 1 , wherein the chamber expansion member is provided in a ceiling space . The invention is applied to a building provided with a ventilating device provided in the lowered ceiling space and ventilating each indoor space in the building,
The air conditioner of a building according to claim 1 or 2 , wherein the chamber expansion member is provided on the side of the ventilation device in the lowered ceiling space. The building air conditioning system according to any one of claims 1 to 3 , wherein the height dimension of the chamber above the second indoor space is larger than the height dimension of the lowered ceiling space. Above the second indoor space, an upper end portion of the chamber expansion member connected to the chamber is provided with an air-tight member that blocks air flow in and out of a connection portion between the chamber and the chamber expansion member. The air conditioning equipment of the building according to any one of claims 1 to 4 , characterized in that. Above the second indoor space, the chamber is fixed to an upper base material provided on the upper side of the first ceiling surface material, and the chamber expansion member is provided below the first ceiling surface material. It is being fixed to the lower side base material provided, The air-conditioning installation of the building of any one of the Claims 1 thru | or 5 characterized by the above-mentioned. A living room as the first indoor space and a non-living room as the second indoor space are provided, and a ceiling surface material of the non-living room is the second ceiling surface material, and the lowered ceiling space is formed thereabove Applied to the building
Said through chamber and the chamber expansion member above the non room, building air conditioning according to any one of claims 1 to 6 wherein the conditioned air is equal to or blown into the blank room .

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