JP6535635B2 - Building air conditioning - Google Patents

Description

  The present invention relates to a building air conditioner.

  In an air-conditioning system installed in a building such as a house, an outdoor unit is installed outdoors, and an indoor unit is installed indoors (within a building), and it is generated by refrigerant circulated between the outdoor unit and the indoor unit. The conditioned air (warm air or cold air) is supplied from the indoor unit into the living space of the building. Thus, the living space of the building is air-conditioned.

  In the unit type building of Patent Document 1, the building unit of the second floor is arranged by being raised to the building unit of the first floor, and the main body of the air conditioner in the ceiling space between the building unit of the first floor and the building unit of the second floor Is arranged. In the unit type building of Patent Document 1, a duct space is provided in a building unit on the second floor, one end of an intake duct disposed in the duct space is connected to the apparatus main body, and the other end is on the second floor. It is connected to a branch chamber having a trapezoidal cross section disposed in a cabin space. The branch chamber is connected to a plurality of intake ducts each connected to a duct outlet provided on the ceiling side of the cabin back space.

JP, 2014-240570, A

  By the way, the roof of the building includes a sloped roof such as a gable roof and a flat roof, and also has a roof (mixed roof) in which a plurality of roofs are combined. In addition, the mixed roof has a roof that combines a sloped roof and a flat roof. Here, in the configuration described in Patent Document 1, a space for arranging a duct in the space above the ceiling is required. When the configuration described in Patent Document 1 is applied to the case where the sloped roof and the flat roof are combined, on the sloped roof side, it is possible to secure a space for laying a duct in the under-the-ceiling space. It is difficult to secure a space for arranging a duct in the space above the ceiling.

  The present invention has been made in view of the above facts, and provides a building air conditioning facility capable of air conditioning the air conditioning space on the side of the slope roof and the air conditioning space on the side of the roof in one system. The purpose is

  The first aspect for achieving the above object is disposed in an indoor unit disposed below the ceiling frame of the flat roof side of the building including the sloped roof and the flat roof, and the ceiling frame of the flat roof side. A first duct portion installed in a falling ceiling portion including a ceiling plate and having one end connected to the indoor unit for passing conditioned air, and installed on the upper side of the ceiling frame on the sloped roof side And a second duct portion connected to the first duct portion at an extension portion extending from the lower ceiling portion to the sloped roof side, and through which conditioned air is passed.

  In the first aspect, the building is provided with a sloped roof and a flat roof, and the indoor unit is disposed below the ceiling frame on the flat roof side. A first duct portion provided below the ceiling frame is connected to the indoor unit, and conditioned air is supplied to the first duct portion from the indoor unit. On the sloped roof side of the building, the second duct portion is wired in the ceiling underspace above the ceiling frame, and the second duct portion is connected to the first duct portion, thereby forming the first duct portion. The conditioned air is supplied to the second duct portion via the second duct portion.

  Here, a falling ceiling portion is provided on the flat roof side of the building, and the first duct portion is accommodated in the falling ceiling portion. Further, in the building, an extending portion having a falling ceiling portion is provided on the sloped roof side, and the second duct portion is connected to the first duct portion in the extending portion.

  Thus, by utilizing the extended portion, the second duct portion arranged on the upper side of the ceiling frame on the sloped roof side can be connected to the second duct portion arranged on the lower side of the ceiling frame on the flat roof side . Thereby, in the building provided with the sloped roof and the flat roof, the conditioned air can be supplied to the air conditioned space on the sloped roof side and the flat roof side.

  According to a second aspect, in the first aspect, a connection part connecting the first duct part and the second duct part is protruded from the first duct part and accommodated in the extended part.

  In the second aspect, the connection portion to which the second duct portion is connected is provided in the first duct portion. Moreover, the connection part is accommodated in the extension part provided in the slope roof side of the building. Therefore, the second duct portion can be routed from the upper side of the ceiling frame toward the lower side of the ceiling frame, and can be connected to the connection portion of the first duct portion.

  According to a third aspect, in the second aspect, the cross-sectional shape of the first duct portion is rectangular, the cross-sectional shape of the second duct portion is circular, and the second duct portion is flexible It is assumed.

  In the third aspect, a so-called square duct whose cross-sectional shape is rectangular is used as the first duct portion. By using a corner duct as the first duct portion, a large amount of conditioned air can be passed even if the dimension in the height direction is reduced, and the height of the ceiling is reduced by reducing the height dimension. it can.

  Moreover, the connection to a connection part and the wiring by the side of a slope roof become easy by using a duct whose cross-sectional shape is circular as the second duct.

  A 4th aspect is a 3rd aspect. The said 1st duct part is provided with the blowing part opened toward the air conditioned space by the side of the said flat roof.

  In the fourth aspect, the blowout portion is provided in the first duct portion. The falling ceiling is lower than the surrounding ceiling, and the air-conditioning air can be blown out from the first duct to the periphery of the falling ceiling by opening the blowing portion at the falling portion of the falling ceiling. it can. As a result, it is not necessary to provide a duct for connecting to the blowout portion of the conditioned air separately from the first duct portion on the flat roof side.

  According to a fifth aspect, in any one of the second aspect to the fourth aspect, a cross-sectional opening of the connection portion is narrowed from the side of the first duct portion toward the side of the second duct portion.

  In the fifth aspect, the internal opening that is the cross-sectional opening of the connection portion is gradually narrowed from the first duct portion side toward the second duct portion side. As a result, the pressure loss generated in the conditioned air flowing from the first duct portion to the second duct portion is suppressed, and therefore, it is possible to suppress the decrease in the flow rate or the flow velocity of the conditioned air supplied to the second duct portion.

  A 6th aspect is a 5th aspect, The said connection part has a tip part curved in circular arc shape, and the said 2nd duct part is connected to the said tip part.

  In the sixth aspect, the tip of the connecting portion to which the second duct portion is connected is formed in an arc shape. As a result, the conditioned air can be supplied to the second duct while converging the conditioned air from the first duct, and the pressure loss of the conditioned air can be suppressed.

  According to the first aspect, it is possible to air-condition the air-conditioned space on the sloped roof side and the air-conditioned space on the flat roof side in one system.

  According to the second aspect, there is an effect that the arrangement of the second duct portion for connection to the first duct portion is facilitated.

  According to the third aspect, it is possible to suppress the narrowing of the living space on the flat roof side in order to provide the first duct portion.

  According to the fourth aspect, it is possible to suppress the narrowing of the living space on the flat roof side.

  According to the fifth aspect, there is an effect that the conditioned air supplied to the second duct portion can be sent to every corner of the conditioned space. Further, according to the sixth aspect, there is an effect that the conditioned air can be efficiently supplied to the second duct portion with a simple shape.

It is a block diagram which shows the outline of the air conditioning installation in the side view of the building which concerns on this Embodiment. It is a perspective view which shows the outline of the unit for living rooms which forms a building. It is a floor plan of a building provided with an air conditioning facility. It is a schematic perspective view which shows the principal part of the air conditioning installation which concerns on this Embodiment. (A) and (B) is a schematic perspective view which shows an example of a connection part.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
An outline of a building 10 according to the present embodiment is shown in FIG. 1 in a side view. The building 10 according to the present embodiment is a unit type house (unit type building). The unit which forms the building 10 is shown by the perspective view by FIG.

  As shown in FIG. 1, the building 10 according to the present embodiment has two floors, and the roof is formed by the sloped roof 12 and the flat roof 14, and one side of the boundary portion 14A is the sloped roof 12 The other side is a flat roof 14. As shown in FIG. 2, in the building 10, a plurality of living room units 16 and a roofing unit 18 are used. In the building 10, a plurality of living room units 16 are arranged horizontally (vertically and horizontally) and vertically stacked, and adjacent living room units 16 vertically and horizontally and vertically connected are connected to each other to form a first floor (downstairs) portion The second floor (upstairs) part is formed.

  Four frame side pillars 20 are provided in the room unit 16, and a ceiling frame 22 is formed on the top of the four frame side pillars 20, and a floor is formed on the lower side of the four frame side pillars 20. A frame 24 is formed. The ceiling frame 22 has a rectangular frame shape in which the end portions of the pair of girder ceiling girder 26A and the pair of gable ceiling girder 26B are rigidly joined to the joint member 20A at the top of the frame side column 20. In addition, a plurality of ceiling beams 26C parallel to the gable ceiling beam 26B are disposed between the beam girder beams 26A of the ceiling frame 22, and each end of the ceiling beam 26C is a girder ceiling It is joined to the girder 26A. Thus, the ceiling frame 22 is formed in a substantially ladder shape.

  In the floor frame 24, ends of the pair of girder floor girder 28A and the pair of gable floor girder 28B are rigidly joined to the joint member 20B at the lower part of the frame side pillar 20 to form a rectangular frame. In addition, a plurality of floor beams 28C, each of which is parallel to the end floor beam 28B, is disposed between the girder floor beams 28A of the floor frame 24, and each end of the floor beam 28C is a girder floor. It is joined to the girder 28A. Thereby, the floor frame 24 is formed in a substantially ladder shape.

  In the room unit 16, the ceiling plate 30 is disposed on the ceiling base provided with the ceiling girder 26C of the ceiling frame 22 as a ceiling base or suspended from the ceiling girder 26C, and a ceiling is formed. Further, in the room unit 16, the floor plate 32 is disposed on the floor foundation with the floor joists 28C of the floor frame 24 as floor foundations or joists (not shown) disposed on the floor joists 28C as floor foundations to form a floor. Be done. The floor may be formed by laying a heat insulating material between the joists disposed on the floor frame 24 and stacking a plurality of plate members (floor plate 32) on the heat insulating material.

  In the building 10, small sections such as a corridor and a storage are formed by dividing the interior of the room unit 16 as a living space by a partition wall. Further, in the building 10, a plurality of living room units 16 arranged in the horizontal direction are communicated with each other to form a living room or the like which is a living space wider than one living room unit 16.

  In the building 10, a roofing unit 18 is joined to form a sloped roof 12 on a living room unit 16 in the upper floor portion. As the sloped roof 12, any form such as a gable roof, a rib roof, a half-flow roof, etc. can be applied. As shown in FIGS. 1 and 2, in the present embodiment, a gable roof is applied as the sloped roof 12.

  The roofing unit 18 is assembled so that an aggregate (not shown) is used to form a gable roof. Further, the roof unit 18 is provided with a plurality of inclined roof beams (not shown) to form a roof frame, the roof frame is used as a base, and the roof members such as roof panels are inclined and laid. It is done. The sloped roof 12 is not limited to one assembled as the roof unit 18 in advance, and may be formed on a framework unit 16 horizontally arranged using a steel frame or the like.

  As shown in FIG. 1, in the building 10, the roof unit 18 is provided on a part of the roof to form the sloped roof 12 as a gable roof, and the ceiling space 12A is formed on the sloped roof 12 side. It can be formed.

  On the other hand, the whole building air conditioning system is provided in the building 10, and the whole building air conditioning system includes the air conditioning equipment 34 as an air conditioning equipment. The air conditioning equipment 34 includes an indoor unit 36 as an indoor unit and an outdoor unit (not shown) as an outdoor unit, and the outdoor unit is installed outside the building 10 (outdoor), and the indoor unit 36 is a building 10 On the second floor of the hotel. One system for air-conditioning the air-conditioning space is configured by the indoor unit 36, a duct connected to the indoor unit 36, and air conditioning equipment such as a chamber connected to the indoor unit 36. Thus, the air conditioning system 34 is one of the air conditioning systems mainly responsible for the air conditioning on the floor in the entire building air conditioning system of the building 10. In the entire building air conditioning system, an air conditioning system that takes charge of air conditioning of the lower floor (the first floor) may be provided separately from the air conditioning equipment 34 (the indoor unit 36). In addition, the whole building air conditioning system may include an indoor unit in which the air conditioning equipment 34 is provided in the lower floor, and the air conditioning equipment 34 may perform air conditioning in the air conditioning space of the lower floor together with the floor.

  In FIG. 3, the air-conditioned space on the floor which is air-conditioned by the air-conditioning equipment 34 in the building 10 is shown in a floor plan. In the building 10, a plurality of living rooms 40 are provided which are partitioned by the partition wall 38. As the living rooms 40, living rooms 40A and 40B provided on the sloped roof 12 side and living rooms 40C provided on the flat roof 14 side. It is included.

  Further, in the building 10, a hallway 42 is provided on the flat roof 14 side of the room 40A, and in the hallway 42, a stair room 42A connecting the floor and the floor and a hall 42B on the floor are communicated. The staircase room 42A is provided on the room 40C side of the corridor 42, and the hall 42B is provided on the room 40B side of the staircase room 42A. In the hole 42B, at the side of the room 40B opposite to the step room 42A, a through hole 42C communicating the upper floor with the lower floor is formed. In the building 10, a machine room 44 is provided on the opposite side to the room 40A across the corridor 42, and the machine room 44 is provided with a double-opening door 44A on the hallway 42 side.

  In the building 10, the partition wall 38 between the room 40A and the corridor 42 is a boundary 14A between the sloped roof 12 and the flat roof 14. Accordingly, in the building 10, the corridor 42, the step room 42A and the machine room 44 are on the flat roof 14 side, and the hole 42B is on the sloped roof 12 side.

  As shown in FIGS. 1 and 3, the indoor unit 36 is provided in the machine room 44, and the indoor unit 36 is disposed on the floor plate 32 (on the floor surface) of the machine room 44. The main part of the air conditioner 34 is shown by the perspective view by FIG.

  As shown in FIGS. 1 and 4, the indoor unit 36 is integrally provided with a heat exchange unit 36A and a blower unit 36B provided with a fan (not shown). The heat exchange unit 36A is connected to the outdoor unit by a refrigerant pipe (not shown), and the refrigerant is circulated between the outdoor unit and the outdoor unit through the refrigerant pipe. Further, in the blower unit 36B, a suction portion 36C is provided on the surface on the side of the corridor 42. In the machine room 44 in which the indoor unit 36 is disposed, a gully (air vent) (not shown) is provided for ventilation in one of the door 44A and the lower side of the door 44A, and the machine room 44 has a corridor 42 through the gully. It is in communication with

  Thereby, the air in the corridor 42 is sucked into the indoor unit 36 through the glaring by activating the fan (not shown) of the blower unit 36B. Further, in the indoor unit 36, in the heat exchange unit 36A, heat exchange is performed between the air sucked by the air blowing unit 36B and the refrigerant to generate conditioned air (warm air or cold air).

  The air conditioning equipment 34 is provided with a corner duct 46 as a first duct part that is an air conditioning equipment. As shown in FIG. 4, the rectangular duct 46 is provided with linear members 48A, 48B each in the form of a rectangular box, and between the linear members 48A, 48B, the linear members 48A, 48B are provided. And a corner member 48C that communicates with each other. The corner member 48C has an arc shape in a plan view, and the corner duct 46 has an L shape in which the straight members 48A and 48B are connected by the corner member 48C.

  In the building 10, the ceiling of the whole of the living room 40 (40A to 40C), a part of the staircase room 42A (opposite to the hall 42B), and a part of the hall 42B (on the living room 40B side) The ceiling plate 30 is attached and formed as (refer FIG. 1). Thus, the living space of the living room 40 and the like is expanded. Further, as shown in FIG. 1, a ceiling plate 30 is attached to a ceiling base (not shown) formed by lowering the ceiling of the corridor 42 of the building 10 by a predetermined height than the ceiling frame 22. As a result, in the corridor 42 of the building 10, a falling ceiling portion 50 is formed in which the ceiling height is lowered by a predetermined height (for example, 27.5 cm) than the ceiling height of the living room 40 and the like.

  As shown in FIG. 3, the lower ceiling portion 50 extends from the corridor 42 above the staircase room 42A and reaches the partition wall 38 between the staircase room 42A and the living room 40C. In the hole 42B, a ceiling portion 50 is extended downward from the staircase room 42A. As a result, the extending portion 52 of the lowered ceiling portion 50 is formed on the side of the stair chamber 42A of the hole 42B, and the extending portion 52 is on the sloped roof 12 side.

  In the rectangular duct 46, the straight member 48A is directed from the corridor 42 through the upper part of the staircase room 42A toward the living room 40C, and the tip thereof is in the vicinity of the partition wall 38 between the living room 40 and the corridor 42. Further, as shown in FIG. 1 and FIG. 3, in the rectangular duct 46, the straight member 48B is arranged to be directed from the corridor 42 to the machine room 44, and the tip of the straight member 48B is inserted into the machine room 44 and arranged. There is.

  As shown in FIG. 1, the corner duct 46 is disposed below the ceiling frame 22 on the flat roof 14 side, and the corner duct 46 is supported by the ceiling frame 22. Also, the rectangular duct 46 has a width dimension slightly smaller than the width of the corridor 42 (e.g. less than about 1000 mm), a lower height dimension slightly smaller than the ceiling portion 50 (e.g. about 250 mm). Thus, the corner duct 46 is accommodated in the ceiling portion 50 in the corridor 42 and the staircase room 42A.

  One end of a supply duct 54 is connected to the upper end of the heat exchange unit 36A of the indoor unit 36, and the other end of the supply duct 54 is connected to a straight member 48B of an angular duct 46 protruding above the machine chamber 44 ing. The supply duct 54 is a circular round duct whose internal opening diameter is about 350 mm, and has flexibility (flexibility) and heat insulation. As the supply duct 54, a flexible duct or a spiral duct is used. Thus, the conditioned air generated by the heat exchange unit 36A of the indoor unit 36 is supplied to the corner duct 46 via the supply duct 54. The supply duct 54 may be connected to the lower surface of the straight member 48B, or may be connected to the end face of the straight member 48B via an elbow or the like.

  As shown in FIGS. 3 and 4, the straight members 48 </ b> A of the rectangular duct 46 are provided with blowout portions 56, 58 as blowout portions of the first duct portion. The blowout portions 56, 58 are formed in a rectangular frame shape and protrude from the linear member 48A, and the protruding tip end is opened. The blowout portion 56 is provided on the end face of the straight member 48A on the side of the living room 40C, and penetrates the partition wall 38 between the living room 40C and the corridor 42 and is opened toward the living room 40C. Further, the blowout portion 58 is provided on the side surface of the straight member 48A opposite to the hole 42B, and is opened toward the staircase room 42A.

  Grills 60 are provided in the blowout portions 56, 58, and the corner duct 46 is in communication with the living room 40C via the blowout portions 56 and the grille 60, and a stairway via the blowout portions 58 and the grille 60. It is communicated with 42A. As a result, the conditioned air supplied to the corner duct 46 is blown out of the blowout sections 56, 58 into the room 40C and the staircase room 42A.

  On the other hand, as shown in FIG. 3, in the rooms 40A and 40B and the holes 42B which are air-conditioned spaces on the side of the sloped roof 12, a blowout portion 62 as a blowout portion of the second duct portion is provided. In the blowout portion 62, a blowout chamber 64 is provided on the upper side of the ceiling frame 22, and the blowout chamber 64 is opened to the ceiling plate 30 side. Further, the ceiling plate 30 has an opening (not shown) corresponding to the blowout chamber 64 and a grill 66 is provided on the lower surface (ceiling surface).

  In the room 40A, a blowout portion 62A (62) is provided in the vicinity of the partition wall 38 on the side of the boundary portion 14A, and a blowout portion 62B is provided in the vicinity of the wall surface on the outdoor side opposite to the blowout portion 62A. There is. Further, in the room 40B, a blowout portion 62C (62) is provided in the vicinity of the wall surface on the outdoor side, and in the hole 42B, the blowout portion 62D (above the blow through 42C) in the vicinity of the partition wall 38 on the room 40B side 62) are provided.

  As shown in FIG. 1 and FIG. 3, a blowout duct 68 is provided as a second duct portion in the ceiling underspace 12A provided on the sloped roof 12 side, and the blowout duct 68 has an internal opening. It is a circular round duct of about 250 mm, and has flexibility (flexibility) and heat insulation. As the blowoff duct 68, a flexible duct and a spiral duct are used. The blowout duct 68 is provided corresponding to each of the blowout portions 62A to 62D, and is routed in the under-the-sky space 12A. Each of the blowout ducts 68 is connected at one end to the blowout chamber 64 of the blowout portion 62 and at the other end to the corner duct 46, and each of the blowout chambers 64 and the corner duct 46 are communicated by the blowout duct 68 It is done.

  The conditioned air in the corner duct 46 is supplied to the blowout chamber 64 via the blowout duct 68. As a result, conditioned air is blown out of the blowout chamber 64 of the blowout portions 62A and 62B into the living room 40A, and conditioned air is blown out of the blowout chamber 64 of the blowout portion 62C into the living room 40B, and the blowout portion into the hole 42B. Conditioned air is blown out from the blowout chamber 64 of 62D. In the building 10, a vent 38A (see FIG. 1) is formed in a partition wall 38 or a door between each living room 40 and the corridor 42, and conditioned air blown out into the living room 40 is vent 38A. The air conditioning air is circulated to the entire building 10 (all over the floor) through the corridor 42 and is sucked into the machine room 44 from the corridor 42.

  Here, as shown in FIG. 4, the corner duct 46 is provided with a connection chamber 70 as a connection portion. The rectangular duct 46 is provided with an extending member (for example, a short duct) 70A on the room 40C side of the linear member 48A (the opposite side to the linear member 48B), and the corner duct 46 has an end on the hole 42B side ( 1 and 3)). As shown in FIGS. 1 and 3, the extending member 70A is lowered from the side surface of the straight member 48A on the hole 42B side and protrudes into the extending portion 52 of the ceiling portion 50, and the connection chamber 70 is It is provided in the extending member 70A and accommodated in the extending portion 52. Thus, the connection chamber 70 is disposed below the ceiling frame 22 on the sloped roof 12 side.

  In the present embodiment, the extending member 70A to which the connection chamber 70 is attached is provided at the end of the straight member 48A on the room 40C side. However, the position of the extending member 70A where the connection chamber 70 is provided (connection chamber 70) is not limited to this. The connection chamber 70 is preferably provided at the tip of the angular duct 46 terminated without the blowout portion. In the rectangular duct 46, the linear member 48A is bent by providing the extending member 70A in the linear member 48A to form the tip of the angular duct 46, and the connection chamber 70 of the angular duct 46 is provided. ing.

  In the connection chamber 70, the inner opening (cross-sectional opening) is rectangular (the outer shape is shown in FIG. 4). Further, as shown in FIG. 4, the connection chamber 70 is curved in a circular shape (arc shape) or an elliptical shape in plan view on the side in the projecting direction (the end portion on the opposite side to the linear member 48A) side. Thus, the connection chamber 70 is curved such that the tip peripheral edge of the upper surface 70B has a smooth convex shape, and the end surface 70C has a smooth curved surface, and the straight member 48A (the extending member 70A) The internal opening is gradually narrowed from the side to the tip.

  A cylindrical protrusion 72 is provided at the tip of the upper surface 70B of the connection chamber 70, and the protrusion 72 is provided so as to protrude upward from the upper surface 70B. The outer peripheral edge of the projection 72 is positioned close to (perpend to or slightly away from) the end peripheral edge of the upper surface 70 B, and the outer diameter of the projection 72 is substantially the same as the inner diameter of the blowing duct 68. ing. Further, the projection 72 is circularly penetrated to form a connection port 74. In addition, as the connection chamber 70, it is possible to apply an arbitrary shape in which the internal opening is gradually reduced, such as a substantially triangular shape and a shape in which the tip end portion is rounded in an arc shape.

  The projecting duct 72 of the connection chamber 70 is inserted into the distal end opening of the blowout duct 68 and is connected to the connection chamber 70. Accordingly, the inside of the blowout duct 68 is communicated with the inside of the angular duct 46 via the connection port 74, and the conditioned air is supplied from the angular duct 46 to the blowout duct 68. Further, as shown in FIG. 1, the outlet duct 68 is penetrated from the upper side to the lower side of the ceiling frame 22 in the extending portion 52.

  When a plurality of blow-off ducts 68 are connected to the connection chamber 70, one of the supply ducts is connected to the connection chamber 70, and the other end is in the ceiling space 12A (for example, a ceiling directly above the extending portion 52 It may be connected to a branching chamber disposed on the upper side of the frame 22). By connecting a plurality of blowoff ducts 68 to the branching chamber, conditioned air can be supplied to each of the plurality of blowout ducts 68. In addition, a plurality of blowout ducts 68 may be connected to one end of the connection chamber 70 in a communicating state to be connected to one branched duct.

  Further, each of the plurality of blowoff ducts 68 may be connected to the connection chamber 70. FIG. 5A shows a connection chamber 76 as an example of a connection portion applicable instead of the connection chamber 70. On the upper surface 70B of the connection chamber 76, a plurality of (for example, four) protrusions 72 are formed. One of the plurality of protrusions 72 is in the vicinity of the front end side peripheral edge of the upper surface, and another protrusion 72 is formed adjacent to the corner duct 46 side of the protrusion 72. Thus, in the connection chamber 76, a plurality of blowoff ducts 68 are connected to the upper surface 70B.

Next, the operation of the present embodiment will be described.
In the building 10, a sloped roof 12 and a flat roof 14 are provided on the upper floor. Further, on the upper floor of the building 10, an indoor unit 36 of the air conditioner 34 is provided, and the indoor unit 36 is disposed in a machine room 44 facing the corridor 42. The indoor unit 36 sucks air from the corridor 42 to generate conditioned air, and supplies the generated conditioned air to the corner duct 46. The corner duct 46 is accommodated in the lowered ceiling portion 50, and a blowout duct 68 is connected to the opposite side to the indoor unit 36, and the blowout portion 62 is connected to the blowout duct 68.

  The staircase room 42A and the living room 40C on the flat roof 14 side are air-conditioned by the conditioned air blown out from the blowout sections 56, 58 of the corner duct 46. Further, the rooms 40A and 40B and the holes 42B on the side of the sloped roof 12 are air-conditioned by the conditioned air blown out from the blowout portion 62 connected to the blowout duct 68. Further, conditioned air of the rooms 40A to 40C, the staircase room 42A, and the hall 42B is sucked into the indoor unit 36 through the corridor 42.

  Here, on the flat roof 14 side of the building 10, a lowered ceiling portion 50 is formed extending from the corridor 42 to the step room 42A, and the corner duct 46 is accommodated in the lowered ceiling portion 50. Further, in the building 10, an extending portion 52 is provided on the sloped roof 12 side, and in the extending portion 52, the corner duct 46 and the outlet duct 68 are connected. Thus, the air conditioner 34 can supply the conditioned air to each of the sloped roof 12 side and the flat roof 14 side, so the sloped roof 12 side and the flat roof 14 can be provided by one system configured by the indoor unit 36 disposed on the flat roof 14 side. Air conditioning air can be supplied to the air conditioning space on the side.

  Further, the conditioned air supplied to the corner duct 46 is blown out from the blowout portion 56 into the living room 40C, and is blown out from the blowout portion 58 into the staircase room 42A. Thus, in the air conditioning system 34, air conditioning is performed by blowing out the conditioned air to the air conditioned space (the room 40A and the staircase room 42A) on the flat roof 14 side where there is no space for arranging the duct in the ceiling (the upper side of the ceiling frame 22). Can. Further, since the blowout sections 56, 58 are provided in the corner duct 46, the configuration for blowing out the conditioned air to the room 40C on the flat roof 14 side and the staircase room 42A is simplified. Moreover, it is possible to air-condition the entire upper floor of the building 10 in which the sloped roof 12 and the flat roof 14 are formed by one air conditioning system in which the indoor unit 36 is provided on the flat roof 14 side.

  Further, the connection chamber 70 is accommodated in the extension portion 52, and the connection chamber 70 is disposed below the ceiling frame 22 on the sloped roof 12 side. For this purpose, the blow-out duct 68 can be inserted into the extending portion 52 from the ceiling underspace 12A side through the space between the ceiling beams 26C of the ceiling frame 22 and connected to the connection chamber 70. Thus, the arrangement for connecting the outlet duct 68 to the connection chamber 70 is extremely easy. Moreover, it is not necessary to forcibly bend the outlet duct 68.

  On the other hand, in the connection chamber 70, the internal opening (cross-sectional opening) is gradually narrowed from the corner duct 46 side toward the tip end portion, and the tip end portion has an arc shape in plan view. A blowing duct 68 is connected to the connection chamber 70 at a tip end where the internal opening is narrowed. For this reason, since the conditioned air passing through the connection chamber 70 is efficiently converged toward the tip end, the increase in the pressure loss of the conditioned air supplied to the blowing duct 68 can be suppressed. As a result, the conditioned air is efficiently supplied from the corner duct 46 to the outlet duct 68. Therefore, it is possible to suppress the decrease in the amount and the air volume of the conditioned air blown out from each of the blowout portions 62, and it is possible to perform the air conditioning by supplying the conditioned air to the corners of the rooms 40A and 40B and the holes 42B.

  In the present embodiment, the outlet duct 68 is connected to the upper surface 70B of the connection chamber 70, but the connection position of the outlet duct 68 is not limited to this. In the connection chamber 78 as the connection portion shown in FIG. 5B, a protrusion 72 is provided on the end surface 70C, and the blowout duct 68 is connected to the protrusion 72. Thus, the connection chamber 78 can efficiently converge the conditioned air from the corner duct 46 toward the projection 72, so that the conditioned air supplied to the blowing duct 68 can be prevented from receiving a pressure loss.

  Further, the connection chamber may be provided with the protrusions 72 on the upper surface 70B and the end surface 70C, whereby the connection chamber can efficiently supply the conditioned air to each of the plurality of blowing ducts 68. Furthermore, the shape of the connection portion is not limited to the shape in which the tip end portion to which the blowout duct 68 is connected is curved in an arc shape. The connection portion can adopt any shape as long as it can converge the conditioned air toward the blowout duct 68 and can suppress generation of a large pressure loss in the conditioned air supplied to the blowout duct 68.

  Further, in the present embodiment, although it has been described that the connecting chamber 70 as the connecting portion is accommodated in the extending portion 52, the present invention is not limited to this, and the blowing duct 68 is wired in the extending portion 52. It is good. In this case, the connection chamber 78 described above is lowered and disposed in the ceiling portion 50, and the tip of the blowout duct 68 which penetrates the ceiling frame 22 from the ceiling back space 12A is lowered and directed into the ceiling portion 50 to the connection chamber 78. You may connect it. Also in this case, the routing of the outlet duct 68 is facilitated. In this case, the blowout duct 68 may be directly connected to the corner duct 46 by forming a shape corresponding to the connection chamber 78 in the corner duct 46 or the like.

  Furthermore, in the present embodiment, the falling ceiling portion 50 is provided from the corridor 42 to the staircase room 42A, but the position where the falling ceiling portion is provided is not limited to this. The falling ceiling may be provided in accordance with the layout of the building 10. The falling ceiling may be provided in consideration of the design of the room 40 or the like and the lightability. In this case, a corner duct as the first duct may be provided in accordance with the falling ceiling.

  When the position of the partition wall 38 is known in advance in the room unit 16 on the flat roof 14 side, the corner duct 46 may be attached to the ceiling frame 22 in advance in the room unit 16. As a result, the work of attaching the corner duct 46 to the ceiling frame 22 can be simplified at the construction site of the building 10, so that the construction of the air conditioner becomes easy.

  Although the unit type building 10 has been described as an example in the embodiment described above, the building is not limited to the unit type, and the ceiling frame may be formed by ceiling beams using wood or the like. good.

DESCRIPTION OF SYMBOLS 10 building 12 slope roof 14 flat roof 16 unit for room 22 ceiling frame 30 ceiling board 34 air conditioner 36 indoor unit 40 (40A-40C) room 42 hallway 42A stair room 42B hall 46 square duct (1st duct part)
50 falling ceiling portion 52 extending portion 56, 58 blowing portion (blowing portion of first duct portion)
62 (62A to 62D) blowout sections 70, 76, 78 connection chambers (connection sections)

Claims (6)

An indoor unit disposed below the ceiling frame on the flat roof side of the building including the sloped roof and flat roof;
A first duct portion installed in a falling ceiling portion configured including a ceiling plate disposed below the ceiling frame on the flat roof side, and one end side being connected to the indoor unit to pass conditioned air ,
A cable is installed on the upper side of the ceiling frame on the sloped roof side, and is connected to the first duct portion at an extension portion extended from the lowered ceiling portion to the sloped roof side to pass conditioned air. 2 duct parts,
Air conditioning in a building equipped with   The building air-conditioning system according to claim 1, wherein a connecting portion connecting the first duct portion and the second duct portion is protruded from the first duct portion and accommodated in the extending portion.   The building according to claim 2, wherein the cross-sectional shape of the first duct portion is rectangular, the cross-sectional shape of the second duct portion is circular, and the second duct portion is flexible. Air conditioning equipment.   The building air-conditioning system according to claim 3, wherein the first duct portion is provided with a blow-out portion opened to the air-conditioning space on the land roof side.   The building air conditioning facility according to any one of claims 2 to 4, wherein the connection portion has a cross-sectional opening narrowed from the first duct portion side toward the second duct portion side. The air conditioning system for a building according to claim 5, wherein the connection portion has an end portion curved in an arc shape, and the second duct portion is connected to the end portion.