JP2018016997A - Ventilation structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation structure of a building capable of securing ventilation performance while restraining reduction in sound insulation performance between adjacent indoor spaces.SOLUTION: Ceiling surface materials 72a and 72b for forming the downward ceiling are provided at a ceiling part of a sharing living 41 and a corridor space 36 adjacent by separating a partition wall 47 in a two-family house, and attic spaces 74a and 74b are formed above these ceiling surface materials 72a and 72b. An air-conditioning duct 62 is provided in these respective attic spaces 74a and 74b while straddling both the attic spaces 74a and 74b. Ventilation grilles 92 and 94 are provided in the respective ceiling surface materials 72a and 72b, and a ventilation member 80 is provided in the respective attic spaces 74a and 74b while straddling these both the spaces 74a and 74b. The ventilation member 80 is connected to the respective ventilation grilles 92 and 94, and a ventilation passage 89 for circulating air between the sharing living 41 and the corridor space 36, is formed inside the ventilation member 80.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a ventilation structure for a building.

  In a building such as a house, there is a case where a whole building air conditioning system that performs whole building air conditioning using a common air conditioner may be provided. In the entire building air conditioning system, an air conditioner installed in a machine room takes in the air in the machine room to generate conditioned air (that is, cold air or warm air), and the generated conditioned air is supplied to a plurality of air-conditioned rooms. It is supplied through a ventilation duct. The air-conditioning air thus supplied is used to heat and cool each room.

  In buildings where the entire building air conditioning system is provided, there is generally provided a reflux path for returning (returning) the conditioned air supplied to each room to the machine room. This reflux path is a path that passes through a vent formed between adjacent rooms, and this vent is formed by, for example, an undercut portion of an entrance door. In this case, the air conditioner takes in the recirculated air to the machine room and generates conditioned air. That is, in this case, the air conditioning of each room is performed while circulating the conditioned air in the building.

  By the way, in a whole building air conditioning system, an air conditioning duct may be arrange | positioned by the ceiling back of a building. For example, Patent Document 1 discloses a configuration in which a ceiling surface material is provided at a position lower than a normal ceiling height in a ceiling portion of a building to form a falling ceiling, and an air conditioning duct is disposed in a ceiling space on the falling ceiling. Is disclosed. According to such a configuration, even when there is no space for arranging the air conditioning duct in the space behind the ceiling on the ceiling surface material having a normal height, the air conditioning duct can be arranged on the ceiling portion.

Japanese Patent Laying-Open No. 2015-200101

  By the way, in the circulation type whole building air conditioning system mentioned above, the case where the ventilation | gas_flowing amount through an air vent (for example, undercut part) cannot be ensured between adjacent rooms is assumed. In that case, air circulation is not performed well in the building, which may cause a decrease in air conditioning efficiency.

  Therefore, it is conceivable to secure a desired air flow between the rooms by increasing the opening area of the air vent. However, if it does so, it will become easy to produce the sound leakage between rooms through a vent hole, and there exists a possibility that the sound insulation performance may fall.

  The present invention has been made in view of the above circumstances, and has as its main object to provide a building ventilation structure that can ensure ventilation performance while suppressing a decrease in sound insulation performance between adjacent indoor spaces. To do.

  In order to solve the above problems, the building ventilation structure according to the first aspect of the present invention includes, as an indoor space, a first space portion and a second space portion that are adjacent to each other with a partition wall interposed therebetween, and the ceiling portion of the first space portion is provided. A first ceiling surface material that forms a falling ceiling is provided, a first ceiling back space is formed above the first ceiling surface material, and a first ceiling surface material is formed on the ceiling portion of the second space portion. 2 ceiling surface materials are provided, a second ceiling back space is formed above the second ceiling surface material, and the first ceiling back space and the second ceiling back space are provided in each of the ceiling back spaces. A first ventilation port provided in the first ceiling surface material, a second ventilation port provided in the second ceiling surface material, applied to a building provided with a ventilation duct extending across, and Each vent is connected to the first ceiling space and the second ceiling space. And a provided ventilation member, wherein the inside of the ventilation member, wherein the air passage for circulating the air is formed between said first space and the second space portion.

  According to the present invention, ceiling surface materials that form falling ceilings are provided on the ceiling portions of the first space portion and the second space portion that are adjacent to each other with a partition wall therebetween, and the ceiling back space (the first space on the ceiling surface material) A ventilation duct is disposed across the ceiling space (1 ceiling space and the second ceiling space). And in this invention, it pays attention to the ceiling back space on the falling ceiling in which the ventilation duct is arrange | positioned, and ventilates between the 1st space part and 2nd space part which adjoin using the ceiling back space. I am going to do that.

  Specifically, vents are provided in the ceiling surface material of each of the first space part and the second space part, and the ventilation member that connects these vent holes straddles the first ceiling back space and the second ceiling back space. Provided. In this case, since air can be circulated between the first space portion and the second space portion through the air passage formed inside the ventilation member, a vent hole having a large opening area is provided between the space portions. Even if it does not form, a desired air flow rate can be ensured between the spaces. Thereby, ventilation | gas_flowing performance is securable, suppressing the fall of sound insulation performance between each adjacent space part.

  In addition, since the ventilation member is disposed using the ceiling space on the falling ceiling where the ventilation duct is disposed, the above-described effects can be obtained while effectively using the ceiling.

  A building ventilation structure according to a second aspect of the present invention is characterized in that, in the first aspect, the ventilation member has a sound absorbing material provided facing the ventilation path.

  According to the present invention, since the ventilation member has the sound absorbing material facing the ventilation path, the sound propagating through the ventilation path can be absorbed by the sound absorbing material. Thereby, the sound insulation performance can be improved.

  In the building ventilation structure according to a third aspect of the present invention, in the first or second aspect of the invention, the ventilation member is provided in the first ceiling back space, and is connected to the first ventilation port. A second chamber provided in a second ceiling space and connected to the second vent; and a connecting pipe portion connecting the first chamber and the second chamber. To do.

  According to the present invention, the ventilation member has a first chamber connected to the first ventilation port, a second chamber connected to the second ventilation port, and a connection pipe portion connecting these chambers. Yes. In this case, the first chamber and the second chamber are arranged at predetermined positions in the first ceiling back space and the second ceiling back space, respectively, and the respective chambers are connected via the connecting pipe portion to constitute the ventilation member. Can do. In such a configuration, since the ventilation member can be configured only by determining the length of the connection pipe portion according to the position of each chamber, the ventilation member can be constructed relatively easily.

  According to a fourth aspect of the present invention, there is provided a ventilation structure for a building according to the third aspect, wherein the first duct and the second chamber are arranged such that the ventilation duct extends between the first ceiling back space and the second ceiling back space. It is arrange | positioned along with the duct extension direction extended.

  According to the present invention, since the first chamber and the second chamber are arranged side by side in the duct extending direction in which the ventilation duct extends, the ventilation member can be arranged along the ventilation duct. In the configuration in which the ventilation duct is arranged in the ceiling space on the falling ceiling, it is considered that the ceiling space is formed along the arrangement route of the ventilation duct. In this case, the ventilation member can be suitably arranged.

  In the building ventilation structure according to a fifth aspect of the present invention, in the fourth aspect of the invention, the first chamber and the second chamber are both adjacent to the boundary between the first ceiling back space and the second ceiling back space. It is characterized by being arranged.

  According to the present invention, since both the first chamber and the second chamber are disposed adjacent to the boundary portion between the first ceiling back space and the second ceiling back space, the connecting pipe portion connecting these chambers is provided. The length can be shortened as much as possible, and the length of the air passage can be shortened as much as possible. Thereby, improvement of ventilation performance can be aimed at.

  A building ventilation structure according to a sixth aspect of the present invention includes the air conditioning device for generating conditioned air in any one of the first to fifth aspects, and the ventilation from the air conditioning device to the conditioned space that is the indoor space to be conditioned. It is applied to a building where air-conditioned space is air-conditioned by supplying air-conditioned air through a duct, and the building is provided with a return path through which the air-conditioned air supplied to the air-conditioned space returns to the air-conditioning device. The reflux path is a path that passes through the ventilation path.

  According to the present invention, in the circulation type air conditioning system, the return path through which the conditioned air supplied from the air conditioner to the conditioned space is returned to the apparatus is a route via the ventilation path. In this case, in the configuration in which the conditioned air is circulated through between the adjacent indoor spaces (the first space portion and the second space portion), it is possible to suppress the sound insulation performance from being lowered between the two spaces. A desired amount of ventilation can be ensured.

  A ventilation structure for a building according to a seventh aspect of the present invention is the air vent structure according to any one of the first to sixth aspects, wherein a door is provided at an entrance between the first space portion and the second space portion. A lower portion of the air passage is provided with a vent hole that allows the first space portion and the second space portion to communicate with each other. In addition to a route that passes through the vent passage, a route that passes through the vent port is provided as the reflux path. It is characterized by.

  According to the present invention, a vent hole that communicates the first space portion and the second space portion is provided at the lower portion of the door, and the vent hole is provided as a return path for the conditioned air in addition to the above-described path via the vent path. A route is provided. In this case, because the ventilation path is provided on the floor side while the ventilation path is provided on the floor side, the conditioned air (warm air) is on the ceiling side during cooling when the conditioned air (cold air) easily flows on the floor side. The air-conditioned air can be suitably guided from the first space portion to the second space portion (or from the second space portion to the first space portion) both during heating that easily flows.

  In addition, as an air vent, the undercut part formed in the lower end side of a door, the louver formed in the lower part of a door, etc. are mentioned.

  The ventilation structure for a building of an eighth invention is the sixth or seventh invention, wherein the first space portion has a skip floor portion at a position lower than a normal height floor portion as the floor portion. The first space portion is the conditioned space to which conditioned air is supplied from the air conditioner, and the supplied conditioned air is circulated from the first space portion to the second space portion side through the ventilation path. It is the structure which carries out.

  According to the present invention, since the first space portion is a space having a relatively large volume with a skip floor portion, when air-conditioned air is supplied to the first space portion and air-conditioning is performed, The supply amount will increase. In this case, the amount of air that flows between the adjacent first space portion and the second space portion is also considered to increase because the amount of air supplied to the air conditioner increases accordingly. . For this reason, if the opening area of the vent formed in the door or the like is increased in order to secure the ventilation amount, the sound insulation performance may be greatly deteriorated. In that respect, in the present invention, since the sixth invention is applied to such a configuration, even in such a case, it is possible to secure the air flow rate while avoiding a significant decrease in the sound insulation performance.

  According to a ninth aspect of the present invention, there is provided the ventilation structure for a building according to any one of the first to eighth aspects, wherein the building includes a first living section in which a first household resides and a second living section in which a second household resides. , A two-family house having a shared space shared by the first household and the second household, wherein the first living portion is provided with an adjacent space adjacent to the shared space, and the first space portion Is the shared space, and the second space portion is the adjacent space.

  In a two-family house where the first and second households reside, there may be a common space shared by those households. In the case where an adjacent space adjacent to the shared space is provided in the first living part where the first household resides, it is considered that sound insulation performance is particularly required between the shared space and the adjacent space. Therefore, in the present invention, in view of this point, the first invention is applied when ventilation is performed between the two spaces. Thereby, ventilation | gas_flowing can be ensured, suppressing that the sound insulation performance falls between shared space and adjacent space.

The perspective view which shows a two-family house. The top view which shows the floor plan of the second floor part. The longitudinal cross-sectional view which shows the structure of a common living room and its periphery. The top view which shows the structure of an air conditioning system. The top view which shows arrangement | positioning of the ceiling surface material which forms a falling ceiling. The longitudinal cross-sectional view which expands and shows the installation structure of an air-conditioning duct. The top view which shows the flow of the air in a 2nd floor part. (A) is a top view which shows the structure of the ventilation structure provided in the ceiling back space on the ceiling which falls, (b) is a longitudinal cross-sectional view which shows the structure.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the building is a two-family house where a child household and a parent household reside, and the ventilation structure of the present invention is applied to the two-family house. Therefore, in the following, the configuration of the two-family house will be described first. FIG. 1 is a perspective view showing a two-family house.

  As shown in FIG. 1, the two-family house 10 has a three-story structure having a first floor part 11, a second floor part 12, and a third floor part 13. The two-family house 10 includes a first building part 15 in which a child household resides and a second building part 16 in which a parent household resides. The first building part 15 is a three-story building having a first floor part 11, a second floor part 12 and a third floor part 13. On the other hand, the second building portion 16 is a two-story building having a first floor part 11 and a second floor part 12. The child household corresponds to the first household, and the parent household corresponds to the second household. The first building part 15 corresponds to a first living part, and the second building part 16 corresponds to a second living part.

  The 1st building part 15 and the 2nd building part 16 are arrange | positioned in the state which mutually separated and opposed. In the second floor portion 12 of the two-family house 10, an intermediate building portion 17 is provided between the first building portion 15 and the second building portion 16. The intermediate building part 17 is provided in a state where the first building part 15 and the second building part 16 are connected to each other.

  Between the first building part 15 and the second building part 16, an inner garage 18 capable of parking a vehicle and a common entrance space 19 wider than the inner garage 18 are provided below the intermediate building part 17. Yes. The first floor portion 11 of the first building portion 15 is provided with an entrance 26 for a child household facing the common entrance space 19, and the first floor portion 11 of the second building portion 16 is provided in the common entrance space 19. Facing the entrance is a parent household entrance (not shown).

  Next, the floor plan 12 of the second-floor house 10 will be described with reference to FIG. FIG. 2 is a plan view showing the floor plan of the second floor portion 12.

  As shown in FIG. 2, in the second floor portion 12, the first building portion 15 is provided with a corridor 21, a living room 22, a dining room 23, a kitchen 24, and the like as living spaces for child households. The corridor 21 leads to a stairway 27 extending to the first floor portion 11 and leads to a staircase 28 extending to the third floor portion 13. The living room 22, the dining room 23, and the kitchen 24 are continuous continuous spaces, and the continuous space is an LDK space 25. The LDK space 25 leads to the corridor 21.

  A storage space 29 is provided adjacent to the side of the corridor 21. For example, a storage shelf is installed in the storage space 29 so that articles can be stored. The storage space 29 is a concave space that is recessed from the corridor 21 and is open toward the corridor 21. Hereinafter, a continuous space in which the corridor 21 and the storage space 29 are continuous is also referred to as a corridor space 36. The corridor space 36 corresponds to a “second space portion” and an “adjacent space”.

  On the other hand, in the second floor portion 12, the second building part 16 is provided with a corridor 31, a bedroom 32, a storage room 33, a bathroom 34, a sanitary 35, etc. as living spaces for the parent household. The hallway 31 leads to a staircase 37 extending to the first floor portion 11, and further leads to the bedroom 32 and the sanitary 35.

  In the second floor portion 12, the intermediate building part 17 is provided with a shared living room 41 and a shared balcony 42 as a shared space shared by the child household and the parent household. As a result, in the two-family house 10, the child household and the parent household can interact with each other in the shared spaces 41 and 42. These shared spaces 41 and 42 are arranged side by side in a direction orthogonal to the direction in which the first building part 15 and the second building part 16 face each other. In addition, the public spaces 41 and 42 can be accessed from the first building portion 15 and the second building portion 16, respectively.

  Next, the configuration around the shared living room 41 will be described with reference to FIG. 3 in addition to FIG. FIG. 3 is a longitudinal sectional view showing the configuration of the shared living room 41 and its periphery, and corresponds to the sectional view taken along the line AA of FIG.

  As shown in FIGS. 2 and 3, the shared living room 41 is provided with an upper floor 44 and a lower floor 45 having different floor heights as the floor. The upper floor portion 44 and the lower floor portion 45 are arranged in the same direction as the direction in which the shared spaces 41 and 42 are arranged, with the upper floor portion 44 on the shared balcony 42 side and the lower floor portion 45 on the opposite side of the shared balcony 42. Has been placed. The floor height of the upper floor 44 is the same as the floor height of the second floor portion 12. On the other hand, the lower floor portion 45 has a floor surface height lower than the floor surface height of the second floor portion 12. That is, the lower floor portion 45 is a so-called skip floor portion. Further, a stepped stepped floor 46 is provided between the upper floor 44 and the lower floor 45.

  In the ceiling portion of the shared living room 41, the ceiling surface is set at a position lower than the (normally high) ceiling surface of the second floor portion 12 above the upper floor portion 44. That is, above the upper floor portion 44, the ceiling portion is lowered and becomes a ceiling. Further, above the lower floor portion 45, the ceiling surface is set to the same height as the (normal height) ceiling surface of the second floor portion 12.

  The shared living room 41 is adjacent to the corridor 21 (corridor space 36) of the first building part 15. The shared living room 41 and the hallway 21 are partitioned by a partition wall 47, and the partition wall 47 is provided with an entrance / exit 48 that communicates both the spaces 21 and 41. The entrance / exit between the corridor 21 and the shared living room 41 can be made through this entrance / exit 48. The doorway 48 is provided with a door 49 made of a hinged door. The door 49 is provided with a ventilation portion 55 that allows the corridor 21 and the shared living room 41 to communicate with each other, and the ventilation portion 55 is made of, for example, an undercut formed under the door 49. The ventilation portion 55 may be a gallery formed in the lower portion of the door 49 instead of the undercut. The ventilation part 55 corresponds to a “vent hole”.

  The shared living room 41 is adjacent to the upper space 51 on the stairs above the stairs 37 in the second building part 16. The shared living room 41 and the staircase space 51 are partitioned by a partition wall 52, and the partition wall 52 is provided with an entrance / exit 53 that communicates both the spaces 41 and 51. The entrance / exit 53 allows entry / exit between the space 51 on the stairs and the shared living room 41. The doorway 53 is provided with a door 54 made of a sliding door.

  By the way, in the two-family house 10, the entire building air conditioning system is provided on the second floor portion 12. The second floor portion 12 is provided with an air conditioning system on the side of a child household that targets the first building 15 as an air conditioning system, and an air conditioning system on the side of the parent household that targets the second building 16 as air conditioning. Yes. Below, the air conditioning system by the side of a child household among these each air conditioning systems is demonstrated based on FIG. FIG. 4 is a plan view showing the configuration of the air conditioning system.

  As shown in FIG. 4, the air conditioning system 60 on the child household side is air-conditioned (cooling / heating) with the common living room 41 provided in the intermediate building 17 in addition to the LDK space 25 provided in the first building 15. It is intended to do. The air conditioning system 60 includes an air conditioner 61 that generates conditioned air (warm air and cold air), an air conditioner duct 62 connected to the air conditioner 61, and an outlet chamber 63 connected to the air conditioner duct 62.

  The air conditioner 61 is installed in a machine room 65 provided in the first building part 15. The machine room 65 is provided adjacent to the LDK space 25, and a maintenance opening 66 used when maintaining the air conditioner 61 is provided between the machine room 65 and the LDK space 25 ( (See FIG. 2). The opening 66 is provided with an opening / closing door 67, and the opening / closing door 67 is provided with a ventilation portion 68 that communicates the machine room 65 with the LDK space 25. The ventilation portion 68 is configured by an undercut or a louver of the opening / closing door 67.

  The air conditioner 61 is configured as an indoor unit having a cooling function and a heating function. The air conditioner 61 has a take-in portion (not shown) that takes in the air in the machine room 65, and adjusts the temperature of the air taken in from the take-in portion to obtain conditioned air (cooling air or heating air). Generate. The air conditioner 61 supplies the generated conditioned air to the air conditioning duct 62.

  The air conditioning duct 62 is connected to the air conditioning apparatus 61 via a connection duct 69. The connection duct 69 extends upward from the air conditioner 61 in the machine room 65, and its upper end is connected to the air conditioner duct 62. The air conditioning duct 62 is installed on the back of the ceiling of the second floor portion 12 and extends across the LDK space 25 and the shared living room 41 on the back of the ceiling. The air conditioning duct 62 corresponds to a ventilation duct.

  Here, the installation configuration of the air conditioning duct 62 will be described with reference to FIGS. 5 and 6 in addition to FIG. 4. FIG. 5 is a plan view showing the arrangement of the ceiling member that forms the falling ceiling. FIG. 6 is an enlarged longitudinal sectional view showing the installation configuration of the air conditioning duct 62. FIG. 6 is an enlarged longitudinal sectional view showing the area B in FIG.

  As shown in FIGS. 4 to 6, a ceiling surface material 72 that forms a ceiling that falls along the arrangement path of the air conditioning duct 62 is provided at the ceiling of the second floor portion 12. The ceiling surface material 72 is disposed at a position lower than the ceiling surface material 73 disposed at a normal height in the second floor portion 12. Each of these ceiling surface materials 72 and 73 is made of gypsum board. A ceiling back space 74 is formed above the ceiling surface material 72. The ceiling back space 74 is formed between the ceiling surface materials 72 and 73, and the air conditioning duct 62 is disposed in the ceiling back space 74. 4 and 6, for the sake of convenience, among the ceiling surface materials 72 and 73, the ceiling surface material 72 is shown with a dot hatch, and the ceiling surface material 73 is not shown.

  A blowout chamber 63 is connected to the side surface of the air conditioning duct 62. The blowout chamber 63 is provided at a plurality of locations in the air conditioning duct 62. The blowout chamber 63 includes a plurality of blowout chambers 63 a to 63 d provided for the LDK space 25 and a single blowout chamber 63 e provided for the shared living room 41.

  Each blowing chamber 63a-63e is provided in the level | step difference wall part 76 which connects each ceiling surface material 72 and 73 up and down (refer FIG. 5). An opening 77 that penetrates in the thickness direction is formed in the step wall portion 76, and the blowout chamber 63 is inserted into the opening 77. Moreover, each blowing chamber 63 has the blower outlet 64 which blows off conditioned air sideways.

  Air-conditioned air flowing through the air-conditioning duct 62 is blown out from the blow-out ports 64 of the blow-out chambers 63a to 63e to the LDK space 25 and the shared living room 41 that are air-conditioning targets. Thereby, the air-conditioning (cooling / heating) of the LDK space 25 and the shared living room 41 is performed by the blown-out conditioned air.

  Here, in this air conditioning system 60, a circulation type air conditioning system is adopted, and the conditioned air supplied to the LDK space 25 and the shared living room 41 is returned (returned) to the machine room 65 as return air. . Hereinafter, the flow of the conditioned air will be described with reference to FIG. FIG. 7 is a plan view showing the air flow in the second floor portion 12. Further, in FIG. 7, illustration of the ceiling portion including the air conditioning duct 62 is omitted for convenience.

  As shown in FIG. 7, the conditioned air supplied from the blowout chamber 63 e to the shared living room 41 flows into the corridor 21 (corridor space 36) through the ventilation portion 55, and then flows from the corridor 21 to the LDK space 25. The air that has flowed into the LDK space 25 flows into the machine room 65 through the ventilation portion 68 together with the conditioned air supplied to the LDK space 25 from the blowout chambers 63a to 63d. The air conditioner 61 takes in the air that has flowed into the machine room 65 and generates conditioned air. Thus, the air conditioning system 60 is a circulation system that performs air conditioning while circulating air in a house.

  Note that the reflux path through which the conditioned air blown from the blowing chamber 63e to the shared living room 41 returns to the machine room 65 (and thus the air conditioner 61) corresponds to the “reflux path” recited in the claims.

  As described above, the conditioned air returning from the shared living room 41 to the machine room 65 first flows from the shared living room 41 into the corridor space 36 through the ventilation portion 55 (undercut) below the door 49. However, in this case, depending on the opening area of the ventilation part 55 (undercut), it may be assumed that a sufficient amount of ventilation through the ventilation part 55 cannot be secured.

  Therefore, in that case, by increasing the vertical width of the ventilation portion 55 (undercut) under the door 49 to increase the opening area of the ventilation portion 55, the amount of ventilation from the shared living room 41 to the corridor space 36 is ensured. Can be considered. However, in that case, sound leakage is likely to occur between the shared living room 41 and the corridor space 36 through the ventilation portion 55, and there is a concern that the sound insulation performance may be reduced.

  Therefore, in the present embodiment, in view of this point, a ventilation structure for guiding the conditioned air from the shared living room 41 to the corridor space 36 is used as the ceiling back space 74 on the descending ceiling, which is the installation space of the air conditioning duct 62. Are provided separately. That is, in this embodiment, in addition to the ventilation part 55 under the door 49, the conditioned air is guided from the shared living room 41 to the hallway space 36 through the ventilation structure behind the ceiling. This embodiment is characterized by this point, and hereinafter, the ventilation structure behind the ceiling will be described with reference to FIG. 8 in addition to FIGS. 4 and 6. FIG. 8 is a plan view showing a configuration of the ventilation structure provided in the ceiling space 74 on the ceiling with (a) lowered, and (b) is a longitudinal sectional view showing the configuration.

  As shown in FIGS. 4, 6, and 8, the partition wall 47 described above is provided between the hallway space 36 and the shared living room 41, and falling ceilings are formed on both sides of the partition wall 47. A ceiling member 72 is provided. These ceiling face materials 72 are all arranged at the same height, and in the following, a sign is attached to the sign of the ceiling face material 72 provided above the shared living room 41 among the ceiling face materials 72, and the hallway space. B is added to the code | symbol of the ceiling surface material 72 provided above 36. FIG. The ceiling surface material 72a corresponds to the first ceiling surface material, and the ceiling surface material 72b corresponds to the second ceiling surface material.

  A ceiling back space 74 is formed above each ceiling member 72 (72a, 72b). A ceiling back space 74a is formed above the ceiling surface material 72a, and a ceiling back space 74b is formed above the ceiling surface material 72b. The ceiling back space 74a corresponds to the first ceiling back space, and the ceiling back space 74b corresponds to the second ceiling back space.

  The air conditioning duct 62 extends over the ceiling back spaces 74a and 74b. The air conditioning duct 62 extends in a direction orthogonal to the partition wall 47, and the extending direction corresponds to the duct extending direction. Incidentally, in the present embodiment, the partition wall 47 extends above the ceiling surface material 72 and partitions the ceiling back spaces 74a and 74b from each other (see FIG. 8). The air conditioning duct 62 is disposed in a state of penetrating the partition wall 47.

  Although not shown, the partition wall 47 includes a wall frame and a pair of wall materials provided on both sides of the wall frame, and the upper end portion of the wall frame is a ceiling surface material 73. It is fixed to. In this case, it is only necessary that the upper part of the partition wall 47 above the ceiling member 72 has at least a wall frame. Further, the upper end portion of the partition wall 47 may be set near the height position of the ceiling member 72 so that the ceiling back spaces 74 a and 74 b are not partitioned by the partition wall 47.

  In a state where the air conditioning duct 62 is disposed over the ceiling back spaces 74 a and 74 b, a part of each ceiling surface material 72 a and 72 b extends to the same side surface side of the air conditioning duct 62. The extended portions 78 a and 78 b of the extended ceiling surface materials 72 a and 72 b are adjacent to each other with the partition wall 47 interposed therebetween, and the extended portion 78 b is disposed above the storage space 29 of the corridor space 36. Yes.

  In each of the ceiling back spaces 74a and 74b, surplus spaces 79a and 79b in which the air conditioning duct 62 is not provided are formed on the extended portions 78a and 78b. These surplus spaces 79 a and 79 b are formed on the same side surface side of the air conditioning duct 62, and the width thereof is smaller than the width of the air conditioning duct 62, specifically, half the width of the air conditioning duct 62 or less.

  In the surplus spaces 79a and 79b of the ceiling back spaces 74a and 74b, a ventilation member 80 is provided across the spaces 79a and 79b. The ventilation member 80 includes a first chamber 81 provided in the surplus space 79a, a second chamber 82 provided in the surplus space 79b, and a connecting pipe portion 83 that connects the chambers 81 and 82 to each other.

  The first chamber 81 and the second chamber 82 are disposed adjacent to each other with the partition wall 47 interposed therebetween. Specifically, the chambers 81 and 82 are arranged in contact with the partition wall 47. In this case, the chambers 81 and 82 are arranged side by side in the duct extending direction on the side surface side of the air conditioning duct 62.

  In the present embodiment, both the first chamber 81 and the second chamber 82 have the same configuration. For this reason, in the following description, the portions constituting the chambers 81 and 82 are denoted by the same reference numerals between the chambers 81 and 82, and the description of the chambers 81 and 82 will be collectively performed.

  The first chamber 81 and the second chamber 82 (hereinafter abbreviated as chambers 81 and 82) are formed in a square box shape, and more specifically, a cubic box shape. The chambers 81 and 82 include a chamber main body 84 formed in a box shape from a metal plate material, and a plate-like sound absorbing material 85 provided so as to overlap the inner peripheral surface of the chamber main body 84. The sound absorbing material 85 is made of glass wool, for example, and is provided on each inner peripheral surface of the chamber body 84. Therefore, the internal space of the chambers 81 and 82 is a sound absorbing space surrounded by the sound absorbing material 85. The chambers 81 and 82 are, as a matter of course, a box having a two-layer structure in which the outer layer is composed of the chamber body 84 and the inner layer is the sound absorbing material 85.

  The chambers 81 and 82 are formed with holes 87 and 88 communicating with the inside and outside of the chambers 81 and 82 respectively on the side surface and the bottom surface. Of these holes 87, 88, the hole 87 is formed on the side surface and the hole 88 is formed on the bottom surface.

  The first chamber 81 and the second chamber 82 are arranged in the ceiling back spaces 74a and 74b (surplus spaces 79a and 79b) with the holes 87 facing each other. In this case, the chambers 81 and 82 are arranged in a state of being placed on the ceiling surface materials 72a and 72b.

  The connecting pipe 83 is a straight pipe made of a resin material or a metal material, and has one end inserted into the hole 87 of the first chamber 81 and the other end inserted into the hole 87 of the second chamber 82. Yes. As a result, the chambers 81 and 82 are connected via the connecting pipe portion 83. Note that the connecting pipe portion 83 is provided in a state of penetrating the partition wall 47.

  The ventilation member 80 has an air passage 89 extending over the chambers 81 and 82 and the connecting pipe portion 83 therein. The ventilation path 89 is formed by the internal space of each of the chambers 81 and 82 and the internal space of the connection pipe portion 83.

  A through hole 91 is formed in the ceiling surface material 72 a at a position below the first chamber 81. The through hole 91 is provided corresponding to the hole 88 of the first chamber 81. A ventilation grill 92 is attached to the ceiling surface material 72 a with respect to the through hole 91. The ventilation grill 92 is connected to the lower surface of the first chamber 81. As a result, the internal space of the first chamber 81 (and thus the ventilation path 89 of the ventilation member 80) communicates with the shared living room 41 through the ventilation grill 92. The ventilation grill 92 corresponds to the first ventilation hole.

  A through hole 93 is formed in the ceiling surface material 72 b at a position below the second chamber 82. The through hole 93 is provided corresponding to the hole 88 of the second chamber 82. A ventilation grill 94 is attached to the ceiling surface material 72 b with respect to the through hole 93. The ventilation grill 94 is connected to the lower surface portion of the second chamber 82. As a result, the internal space of the second chamber 82 (and thus the ventilation path 89 of the ventilation member 80) communicates with the corridor space 36 (specifically, the storage space 29) via the ventilation grill 94. The ventilation grill 94 corresponds to the second ventilation hole.

  Then, the effect | action of the ventilation structure of the falling ceiling back mentioned above is demonstrated.

  As described above, the ventilation path 89 of the ventilation member 80 communicates with the shared living room 41 and the corridor space 36. For this reason, when the conditioned air is blown from the blowing chamber 63 e to the shared living room 41, the conditioned air is guided to the hallway space 36 through the ventilation portion 55 below the door 49, and the hallway space 36 through the ventilation path 89 of the ventilation member 80. (See FIGS. 7 and 8B). That is, in the present embodiment, a route R1 through the ventilation portion 55 and a route R2 through the ventilation passage 89 are provided as a return route through which the conditioned air recirculates from the shared living room 41 to the machine room 65 (and thus the air conditioner 61). The conditioned air is circulated from the common living room 41 to the air conditioner 61 through both the paths R1 and R2. Thereby, even if it does not enlarge the opening area of the ventilation part 55, the ventilation | gas_flowing amount from the common living room 41 to the corridor space 36 can be ensured, and by extension, air-conditioning air is suitably circulated from the common living room 41 to the air conditioner 61. Be able to.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  As described above, by allowing air to flow between the shared living room 41 and the corridor space 36 through the ventilation passage 89 of the ventilation member 80 provided in the ceiling space 74 on the falling ceiling, the opening of the ventilation portion 55 is achieved. A desired air flow rate can be ensured between the spaces 36 and 41 without increasing the area. Thereby, ventilation | gas_flowing performance is securable, suppressing the fall of sound insulation performance between both adjacent space 36,41.

  In addition, since the ventilation member 80 is disposed using the ceiling space 74 on the falling ceiling where the air conditioning duct 62 is disposed, the above-described effect can be obtained while effectively using the ceiling. it can.

  Since the ventilation member 80 includes the sound absorbing material 85 facing the ventilation path 89, the sound propagating through the ventilation path 89 can be absorbed by the sound absorbing material 85. Thereby, the sound insulation performance can be improved.

  The ventilation member 80 includes a first chamber 81 connected to the ventilation grill 92, a second chamber 82 connected to the ventilation grill 94, and a connection pipe portion 83 connecting the chambers 81, 82. did. In this case, the first chamber 81 and the second chamber 82 are arranged at predetermined positions in the ceiling space 74 a and 74 b, respectively, and the chambers 81 and 82 are connected via the connection pipe portion 83, thereby the ventilation member 80. Can be configured. That is, in this case, the ventilation member 80 can be constructed relatively easily because the ventilation member 80 can be configured only by determining the length of the connecting pipe portion 83 according to the positions of the chambers 81 and 82.

  Since the first chamber 81 and the second chamber 82 are arranged side by side in the duct extending direction in which the air conditioning duct 62 extends, the ventilation member 80 can be disposed along the air conditioning duct 62. In the configuration in which the air conditioning duct 62 is disposed in the ceiling space 74 on the falling ceiling, the ceiling space 74 is formed along the path of the air conditioning duct 62. According to this, the ventilation member 80 can be suitably disposed.

  Since the first chamber 81 and the second chamber 82 are respectively disposed adjacent to the boundary portions (specifically, the partition wall 47) of the ceiling back spaces 74a and 74b, the length of the connecting pipe portion 83 that connects the chambers 81 and 82 to each other. As a result, the length of the air passage 89 can be shortened as much as possible. Thereby, improvement of ventilation performance can be aimed at.

  A route R1 passing through the ventilation portion 55 (undercut) under the door 49 and a route R2 passing through the ventilation passage 89 are provided as the return route of the conditioned air. In this case, since the ventilation path 89 is provided on the back of the ceiling while the ventilation portion 55 is provided on the floor side, the conditioned air (warm air) is supplied during the cooling period where the conditioned air (cold air) easily flows on the floor side. Air-conditioned air can be suitably guided from the common living room 41 to the hallway space 36 both during heating which tends to flow on the ceiling side.

  Since the common living room 41 is a space having a relatively large volume with a skip floor (lower floor 45), when supplying air-conditioned air to the common living room 41 and performing air conditioning, the supply amount of air-conditioned air increases. Conceivable. In this case, it is considered that the amount of air flowing from the shared living room 41 to the hallway space 36 increases because the amount of air supplied when the supplied conditioned air returns to the air conditioner 61 increases. Therefore, if the opening area of the ventilation part 55 (undercut) formed under the door 49 is increased in order to secure the ventilation amount, the opening area (vertical width) of the undercut is changed to the normal opening area (vertical width). ) About 2 to 3 times larger. If it does so, there exists a possibility that sound insulation performance may fall large. In that respect, in the above embodiment, when the ventilation between the shared living room 41 and the corridor space 36 is performed, the above-described ceiling ventilation structure is applied, so that the sound insulation performance is not greatly deteriorated. However, the amount of ventilation can be secured.

  When the corridor space 36, which is the living space on the child household side, and the shared living room 41, which is the shared space for the child household and the parent household, are adjacent to each other, The above-described ceiling ventilation structure was applied. In this case, ventilation can be ensured while suppressing a decrease in the sound insulation performance between the shared living room 41 and the corridor space 36 (and thus the first building part 15) in which sound insulation performance is particularly required.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  In the above embodiment, the ventilation member 80 is configured to include the chambers 81 and 82 and the connecting pipe portion 83 that connects both the chambers 81 and 82. You may comprise by a member. In the above embodiment, the chambers 81 and 82 have the same configuration, but the configurations of the chambers 81 and 82 may be different from each other.

  In the above embodiment, the chambers 81 and 82 have the sound absorbing material 85, but one or both of the chambers 81 and 82 may have no sound absorbing material. Even in that case, it is possible to ensure the ventilation performance while suppressing the deterioration of the sound insulation performance. Further, instead of or in addition to providing the sound absorbing material 85 in the chambers 81 and 82, a sound absorbing material (for example, a tubular sound absorbing material) may be provided on the inner peripheral surface of the connecting pipe portion 83.

  In the above embodiment, the chambers 81 and 82 are disposed adjacent to the boundary portions (partition walls 47) of the ceiling space 74a and 74b. However, the chambers 81 and 82 are disposed apart from the boundary portions. May be. The chambers 81 and 82 are not necessarily arranged side by side in the duct extending direction. For example, among the chambers 81 and 82, the first chamber 81 may be provided not on the side surface side of the air conditioning duct 62 (in other words, not on the surplus space 79a) but on the front end side of the air conditioning duct 62. In that case, it is conceivable that the connecting pipe portion 83 connecting the chambers 81 and 82 is formed of a flexible pipe or the like and arranged so as to bypass the air conditioning duct 62.

  In the above embodiment, the route R1 passing through the ventilation portion 55 below the door 49 and the route R2 passing through the ventilation passage 89 are provided as the return route from the shared living room 41 to the air conditioner 61. Instead of providing the ventilation portion 55, the return path may be only the path R <b> 2 that passes through the ventilation path 89. In that case, the sound insulation performance can be improved.

  In the above embodiment, the common living room 41 that is an air-conditioned space is formed with the skip floor (lower floor 45), but the common living room 41 has only a normal height floor (upper floor 44). It may be formed.

  In the above embodiment, the ventilation structure of the present invention is applied when ventilation is performed between the adjacent shared living room 41 and the corridor space 36, but the present invention is applied when ventilation is performed between other adjacent indoor spaces. May be. For example, the present invention may be applied when ventilation is performed between the shared living room 41 and the staircase space 51 adjacent to each other with the partition wall 52 therebetween.

  In the above embodiment, the ventilation member 80 is disposed using the ceiling back space 74 on the falling ceiling where the air conditioning duct 62 is disposed, and when the conditioned air flows back through the ventilation path 89 of the ventilation member 80. Although used as a route, this may be changed. For example, when a ventilation system is provided in the two-family house 10, a ventilation duct (corresponding to a ventilation duct) that conveys outdoor air to an indoor space may be provided. In that case, the ventilation duct may be lowered and disposed in the ceiling space 74 behind the ceiling. Therefore, in such a case, the ventilation member 80 is disposed in the ceiling space 74 where the ventilation duct is disposed, and the ventilation path 89 is provided indoors via the shared living room 41 and the hallway space 36. It can be considered to be used as a route (ventilation route) for discharging air to the outdoors. Also in this case, it is possible to ensure the ventilation performance while suppressing the sound insulation performance from decreasing between the two spaces 36 and 41.

  In the above embodiment, the ventilation structure of the present invention is applied to the two-family house 10, but the ventilation structure of the present invention may be applied to buildings other than the two-family house, such as a single-family house.

  DESCRIPTION OF SYMBOLS 10 ... Two-family house as a building, 15 ... 1st building part as 1st residence part, 16 ... 2nd building part as 2nd residence part, 36 ... Corridor space as 2nd space part and adjacent space, 41 ... 1st space part, common living space as common space and air-conditioned space, 45 ... lower floor part as skip floor part, 47 ... partition wall, 48 ... doorway, 49 ... door, 55 ... vent part as vent hole, 61 DESCRIPTION OF SYMBOLS ... Air-conditioner, 62 ... Air-conditioning duct as a ventilation duct, 72a ... Ceiling surface material as 1st ceiling surface material, 72b ... Ceiling surface material as 2nd ceiling surface material, 74a ... Ceiling back as 1st ceiling space Space, 74b ... Ceiling space as second ceiling space, 80 ... Ventilation member, 81 ... First chamber, 82 ... Second chamber, 83 ... Connection pipe, 85 ... Sound absorbing material, 89 ... Ventilation path, 92 ... Ventilation grille as first vent, 94 ... Ventilation grill as a two vents.

Claims (9)

As an indoor space, provided with a first space portion and a second space portion adjacent to each other with a partition wall therebetween,
A first ceiling surface material that forms a falling ceiling is provided on the ceiling portion of the first space portion, and a first ceiling back space is formed above the first ceiling surface material,
A second ceiling surface material that forms a falling ceiling is provided on the ceiling portion of the second space portion, and a second ceiling back space is formed above the second ceiling surface material,
The first ceiling back space and the second ceiling back space are applied to a building provided with a ventilation duct extending over each of the ceiling back spaces,
A first vent provided in the first ceiling member;
A second vent provided in the second ceiling member;
A vent member connected to each of the vents and provided across the first ceiling space and the second ceiling space;
A ventilation structure for a building, wherein an air passage for allowing air to flow between the first space portion and the second space portion is formed inside the ventilation member.   The building ventilation structure according to claim 1, wherein the ventilation member includes a sound absorbing material provided facing the ventilation path. The ventilation member is
A first chamber provided in the first ceiling space and connected to the first vent;
A second chamber provided in the second ceiling space and connected to the second vent;
The building ventilating structure according to claim 1 or 2, further comprising a connecting pipe portion that connects the first chamber and the second chamber.   The first chamber and the second chamber are characterized in that the ventilation duct is arranged side by side in a duct extending direction extending over the first ceiling back space and the second ceiling back space. The ventilation structure of a building according to claim 3.   The building according to claim 4, wherein the first chamber and the second chamber are both disposed adjacent to a boundary portion between the first ceiling back space and the second ceiling back space. Ventilation structure. It is equipped with an air conditioner that generates conditioned air, and is applied to a building in which air conditioned air is supplied from the air conditioner to the conditioned space that is the indoor space to be air conditioned through the ventilation duct. And
The building is provided with a return path through which the conditioned air supplied to the conditioned space returns to the air conditioner,
The ventilation structure of a building according to any one of claims 1 to 5, wherein the return path is a path that passes through the ventilation path. A door is provided at an entrance between the first space part and the second space part,
At the lower part of the door, there is provided a vent for communicating the first space part and the second space part,
The building ventilation structure according to claim 6, wherein a route passing through the vent is provided as the return route in addition to a route passing through the vent passage. The first space portion has, as its floor portion, a skip floor portion located at a position lower than a normal height floor portion,
The first space portion is the conditioned space to which conditioned air is supplied from the air conditioner, and the supplied conditioned air circulates from the first space portion to the second space portion side through the air passage. The building ventilation structure according to claim 6, wherein the ventilation structure is a building. The building is
A first living section in which the first household resides;
A second living section in which the second household resides;
A two-family house having a common space shared by the first household and the second household;
The first living part is provided with an adjacent space adjacent to the shared space,
The first space is the shared space;
The ventilation structure for a building according to any one of claims 1 to 8, wherein the second space portion is the adjacent space.

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