JP3059727B2 - building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building having a plurality of floors.

[0002]

2. Description of the Related Art FIG. 7 is a schematic diagram showing a conventional central ventilation device. Conventional central ventilation system 10
In No. 0, one large ventilation unit main body 110 for forcibly forming an air flow was installed on the ceiling of the first floor to ventilate room air on all floors of the building. Specifically, one large ventilation unit main body 110 which is located on the ceiling of the first floor and forcibly forms an air flow is formed on the ceiling of the first floor, that is, the floor of the second floor.
The central ventilator 100 includes an external suction pipe 120 communicating with the ventilation unit main body 110 from outside the building to take in fresh air outside the building into the room, and an air sucked from the external suction pipe 120. Indoor supply pipes 130, 1 for supplying the interior of the building via the ventilation unit body 110
50,140. And this indoor supply pipe 13
0,140,150 are a first floor indoor supply pipe 130 for supplying air to the first floor room, a second floor indoor supply pipe 140 for supplying air to the second floor room, and the second floor indoor supply pipe 140 And a vertical connection pipe 150 connecting the floor indoor supply pipe 130.

[0003] The central ventilation device 100
An indoor exhaust pipe 160 that passes from the indoor ceiling on the first floor to the ventilation unit main body 110 to inhale indoor air into the ventilation unit main body 110, and the air exhausted from the room is exhausted to the outside by the indoor exhaust pipe 160. For this purpose, an external exhaust pipe 170 communicating between the outdoor and the ventilation unit main body 110 is provided.

[0004]

However, the above-mentioned conventional central ventilator 100 has to form a vertical connecting pipe 150 extending vertically to connect between the pipes on the first floor and the second floor. Was. For this reason, there is a first problem that a piping space for passing the vertically connected piping 150 through the building is required inside the building, and the living space is narrowed accordingly.

The second problem is that the length of the piping is increased due to the provision of the vertical connection piping 150, and the piping cost is increased. The third problem is that since the total length of the pipes is long, the ventilation unit body 110 including a large-sized air supply device having a high supply capacity is required to supply air to all the pipe ends. There was a point.

Recently, three-story houses have been increasing in terms of effective use of narrow land. However, if the conventional central ventilation system 100 is used for the three-story house, the total length of the piping is also increased. It became longer, and the air supply capacity of the ventilator body also required a larger one, resulting in high cost. For this reason, the conventional central ventilation system 10
0 has the fourth problem that it is difficult to apply it to a house with three stories or more.

Therefore, the first invention of the present invention has been made in view of the first, second, third, and fourth problems of the above-described conventional technology. Provides a central ventilation system that eliminates the need for piping space between the upper and lower floors, shortens the total length of piping, reduces the size of the ventilation unit, and can easily accommodate three-story or higher-rise houses. What you want to do.

[0008] In addition, the second invention of the present invention specifically specifies the pipe of the first invention.
In addition to this, the third invention of the present invention can conceal the indoor supply pipe so as not to be seen from the indoor side, can improve the indoor appearance, and at the same time, easily provide a storage section in which moisture easily accumulates. It is an object of the present invention to provide a central ventilation device that can ventilate the air.

In addition, a fourth invention of the present invention provides a central ventilator which can suppress a decrease in indoor cooling efficiency and heating efficiency such as heating efficiency even when ventilating indoor air to fresh air. It is something to offer. In addition to this, a fifth invention of the present invention is to provide a central ventilation device capable of suppressing a decrease in humidity adjustment efficiency.

[0010]

SUMMARY OF THE INVENTION The present invention is to achieve the above object. The invention of claim 1, wherein according to the present invention, Oite the building having a plurality of floors, the
Each floor is installed independently on the ceiling of each floor of the building.
Central ventilator for fresh external air
And at the same time, exhaust the air inside the room and
A building adapted to be ventilated , wherein said central ventilation
The device consists of a ventilation unit body directly provided with a suction port,
And the floor of the building
It is blown out from the floor outlet and the ventilation unit
Ventilated by the air sucked through the inlet of the
And the outlet is in the vicinity of the outer peripheral edge of the building in plan view.
And the suction port is provided in an inner part of the building.
It is characterized by having been done.

The invention according to claim 2 is the above-described claim 1.
In addition to the features described, the ventilation unit body and outdoor space
External exhaust piping and external suction piping
And connect the ventilation unit body to the indoor space.
A continuous indoor supply pipe is provided, and the indoor supply pipe is
It is longer than the external exhaust pipe and the external suction pipe .

[0012]

[0013] The third aspect of the present invention is the first aspect of the present invention.
Alternatively, in addition to the features described in claim 2 , the respective layers include:
A plurality of rooms are provided, and these rooms are ventilated by the ventilation device (10) provided in the floor.

[0014]

[0015]

[0016]

The invention according to claim 4 is the above-described claim 1.
In addition to the features described in any one of claims 3 to 4, an external intake pipe and an external exhaust pipe that communicate the main body and the outdoor space are provided, and the external intake pipe and the external exhaust pipe extend in parallel. It is characterized by the following.

[0018]

[0019]

[0020]

The invention according to claim 5 is the above-described claim 1.
In addition to the features described in any one of claims 4 to 5, the building is a house.

A first invention of the present invention is a central ventilator (10) capable of ventilating a room in a building having a plurality of floors above and below, comprising: a tubular pipe communicating between the room and the outside; A ventilation unit main body (20) for forming a forced air flow inside the piping, wherein the ventilation unit main body (20) and the piping are formed independently for each floor of the building. Features.

Here, the central ventilation device (1
0) is `` formed independently for each floor of the building ''
This means that the ventilation unit main body (20) and the piping related thereto are formed independently for each floor in order to ventilate the same floor of the building. For example, in the case of a two-story building frame, central ventilation
(10) For the first floor, with the ventilation unit body (21) for the first floor,
The first-floor central ventilation device (11) comprising the first-floor piping relating thereto is arranged on the first-floor ceiling portion, and for the second-floor, comprises the second-floor ventilation unit main body (22) and the second-floor piping. This includes the arrangement of the second floor central ventilation device (12) on the ceiling of the second floor. The central ventilation system for the first floor (11) and the central ventilation system for the second floor (1
2) includes those which are arranged independently for each floor and are formed to be independently operable without being connected by a vertical pipe or the like.

[0024] The "cylindrical pipe communicating between the room and the outside" refers to a cylindrical pipe having one end opening to the outside wall outside and the other end opening to the inside wall inside the room. belongs to. This pipe may be one dedicated to supply for supplying fresh outdoor air to the room, one dedicated to discharge for discharging indoor air to the outside, or one forming any of these. . Further, it also includes one in which two lines dedicated to supply and discharge are formed in parallel.

The "ventilation unit main body (20) for forming a forced air flow inside the pipe" includes an electric motor and a number of blades rotated by the electric motor. Utilizing the generated forced air flow, the air inside the pipe can be forcibly moved in any direction. Specifically, the centrifugal force of the gas is used along with the rotation of the impeller, and a sirocco fan or a centrifugal blower such as a plate fan that pumps the gas, a turbo blower, or a plurality of blades in the radial direction with respect to the axis The gas flows in the axial direction like a fan, and includes an axial flow fan and the like not by centrifugal force but by lift action of blades.

The present invention is formed independently for each floor of a building. Therefore, there is no need to pass a pipe for supplying or exhausting air in the vertical direction between the floors, and there is no need to provide a space for passing such a vertical pipe between the floors. This makes it possible to effectively utilize the internal space of the building without narrowing the living space due to the vertical piping space. Further, since such vertical piping is not required, the total length of the piping can be shortened, and the piping cost can be reduced. In addition, since the total length of the piping is short and only the ventilation capacity of each floor is sufficient, the ventilation unit main body provided on each floor (20)
Capacity can also be made smaller compared to whole building ventilation. And because it is formed independently for each floor, even if the building is more than three stories, the same piping, equipment,
Since it is sufficient to form the equipment for each floor, it is possible to easily cope with a building of three stories or more. In addition, even in the case where a two-story building is extended or remodeled to a three-story building or more, it can be easily coped with only by incorporating the same device.

According to a second aspect of the present invention, there is provided an external suction pipe (30) communicating with a ventilation unit main body (20) from outside the building to take in air outside the building into the room; The air inhaled from (30) is ventilated into the ventilation unit
The indoor supply pipe (40) for supplying the room on the same floor of the building via (20), and the air in the room on the same floor as the room where the indoor supply pipe (40) is arranged is sent to the ventilation unit body (20). An indoor suction port (50) for inhaling air, and a ventilation unit body (2) for exhausting air sucked from the indoor suction port (50) to the outside.
0) and an external exhaust pipe (60) communicating with the outside.

According to the present invention, air outside the building is suctioned from the external suction pipe (30), and the sucked air is supplied to the ventilation unit main body.
The air is supplied to the room on the same floor of the building by the indoor supply pipe (40) via (20). Thereby, fresh air outside the building can be supplied to the room on the same floor. And
The indoor air flows from the indoor suction port (50) to the ventilation unit body (2
0), from which it is discharged to the outside of the building by the external exhaust pipe (60). Thereby, the indoor air can be discharged to the outside of the building. Therefore, part of the room air inside the building and part of the air outside the building can be exchanged, so that the room can be ventilated on the same floor.

According to a third aspect of the present invention, in addition to the features of the first or second aspect, the indoor supply pipe (40) is connected to an indoor storage section for storing articles. Features. In the present invention, the indoor supply pipe (40) is connected to an indoor storage section (for example, the closet 71, the press-in 73, 72, or the like). For this reason, the indoor supply pipe (40) can be hidden inside the indoor storage section (71) so as not to be seen from the indoor side,
The interior appearance can be improved. Since fresh air can be supplied into the room via the indoor storage section (71), ventilation of the indoor storage section (71) can be performed at the same time.

[0030] The fourth invention of the present invention is the above-mentioned first invention,
In addition to the features of the second invention or the third invention, the ventilation unit main body (20) is provided with the air sucked from the indoor suction port (50) located on the indoor side and discharged to the outside from the external exhaust pipe (60). ,
A heat exchange unit is provided for exchanging heat between air sucked from the external suction pipe (30) located outside the room and supplied from the indoor supply pipe (40) to the room.

Here, the "heat exchange section" means that only the transfer of heat is performed without directly mixing the internal air with the air discharged outside and the air supplied into the room. You can do it. For example, a large number of straw-shaped ultra-thin thin-walled cylindrical tubes made of metal, resin, or the like having high thermal conductivity are arranged. Then, one of the air discharged to the outside and the air supplied to the room is passed through the inside of the straw-shaped cylindrical tube, and the other is passed around the cylindrical tube. Thereby, when there is a temperature difference between the air discharged to the outside of the room and the air supplied to the room, the heat having the higher temperature is transmitted to the lower temperature through the thin-walled cylindrical tube. Things. Of course, the heat exchange section is not limited to the above-described structure, and may have another structure as long as it has a heat exchange function.

The ventilation unit body (20) according to the present invention is provided with a heat exchange section for exchanging heat between air discharged outside the room and air supplied into the room. For this reason, in a state where the room is heated, the warm air exhausted from the room to the outside is absorbed by the heat exchange unit, and the absorbed heat is added to the cold outdoor air sucked into the room from the outside. . As a result, air having a higher temperature than the outside is sent into the room, and a decrease in thermal efficiency in the heating state can be suppressed.

On the other hand, in a state where the room is cooled, the warm air sucked into the room from the outside is absorbed by the heat exchange unit, and the absorbed heat is the air discharged from the cooled room to the outside. Is added to Accordingly, air having a lower temperature than the outdoor air is sent into the room, and a decrease in thermal efficiency in the cooling state can be suppressed.

[0034] The fifth invention of the present invention is the above-mentioned first invention,
In addition to the features of the second invention, the third invention or the fourth invention, the ventilation unit main body (20) is provided with an indoor suction port (5
(0) and air discharged from the external exhaust pipe (60) to the outside of the room, and air drawn from the external suction pipe (30) positioned outside the room and supplied to the room from the indoor supply pipe (40). And a water exchange unit for exchanging water contained in the air.

Here, the "water exchange section" means that only the movement of moisture is performed without directly mixing the internal air with the air discharged outside and the air supplied into the room. You can do it. For example, a number of straw-shaped ultra-thin thin-walled cylindrical tubes made of a moisture-absorbing material such as Japanese paper or chemical fiber that easily absorbs moisture are arranged. Then, one of the intake and the exhaust passes through the inside of the straw-shaped cylindrical tube, and the other passes around the cylindrical tube. Thus, when one of the air discharged to the outside and the air supplied to the room is air containing a large amount of water, and the other is dry air, the air containing the large amount of water is used. Is formed so as to be transmitted to the lower humidity through a thin cylindrical tube made of a hygroscopic material. Of course, the water exchange section is not limited to the above structure, and may have another structure as long as it has a function of exchanging other water.

[0036] The ventilation unit body (20) according to the present invention comprises a moisture exchange section for exchanging moisture contained in the air between the air sucked into the room from the outside and the air exhausted from the room to the outside. It has. For this reason, in a state where the indoor humidity is high, air containing a large amount of moisture exhausted from the room to the outside of the room is absorbed by the water exchange unit. Then, the absorbed moisture is added to the dry air when the outdoor dry air is sucked into the room from the outdoor. Accordingly, air having a higher humidity than the outside is sent into the room, and the state where the humidity is higher than the outside can be always maintained.

Further, in a state where the indoor humidity is low, the air containing a large amount of moisture sucked into the room from the outside is absorbed by the moisture exchange unit, and the moisture is converted from the indoor dry air to the outside of the room. Added when discharged to Accordingly, air having a lower humidity than the outside is sent into the room, and the humidity in the room can be constantly maintained at a state lower than the outside.

[0038]

Embodiments of the present invention will be described below in more detail with reference to the drawings. 1 to 6 show an embodiment of the present invention. FIG. 1 is a schematic diagram of a central ventilation device, FIG. 2 is a schematic perspective view of a building in which a central ventilation device is arranged, and FIG. FIG. 4 is a schematic plan view of the arrangement of pipes on the first floor of the apparatus, FIG. 4 is a schematic plan view of arrangement of pipes on the second floor of the central ventilator, FIG. 5 is a longitudinal sectional view showing a state where the ventilation unit body is mounted on the ceiling, and FIG. Salary
The longitudinal section in the state where the air grill was attached to the ceiling is shown, respectively.

First, the configuration of the present embodiment will be described. The central ventilation device according to the present embodiment is capable of ventilating a room in a two-story building having two floors above and below. The central ventilation device 10 includes a tubular pipe that communicates between the room and the outside, and a ventilation unit main body 20 that forms a forced air flow inside the pipe. And this ventilation unit body
20 and pipes are formed independently for each floor of the building to ventilate the same floor of the building. Specifically, for the first floor of the central ventilation device 10, the first floor central ventilation device including the first floor ventilation unit main body 21 and the related first floor piping.
11 are located on the ceiling of the first floor. For the second floor, a second floor central ventilation device 12 composed of a second floor ventilation unit main body 22 and a second floor piping is arranged on the ceiling portion of the second floor. Then, the first-floor central ventilation device 11 and the second-floor central ventilation device 12 are arranged independently for each of the first and second floors without being connected by a vertical pipe or the like, and are independently provided. It is formed to be operable.

The piping includes an external suction pipe 30 that communicates with the ventilation unit main body 20 from the outside of the building to take in air outside the building into the room, and an air sucked from the external suction pipe 30 through the ventilation unit main body 20. An indoor supply pipe 40 for supplying the room on the same floor of the building through the room, an indoor intake port 50 for inhaling air in the room on the same floor as the room where the indoor supply pipe 40 is arranged into the ventilation unit body 20, An external exhaust pipe 60 communicating from the ventilation unit main body 20 to the outside to exhaust air sucked from the indoor intake port 50 to the outside.
And

Since the central ventilator 10 is formed independently of the central ventilator 11 for the first floor and the central ventilator 12 for the second floor, the above-mentioned equipment such as the piping is one. It is provided separately for the floor and the second floor. That is, the first floor central ventilation device 11
Ventilation unit body 21 for the first floor and external exhaust pipe 61 for the first floor
And the first floor external suction pipe 31, the first floor indoor suction port 51,
And a first-floor indoor supply pipe 41. The second-floor central ventilation device 12 includes a second-floor ventilation unit main body 22.
And the second floor external exhaust pipe 62 and the second floor external suction pipe 32
And a second-floor indoor suction port 52 and a second-floor indoor supply pipe.

At the tip of the indoor supply pipe 40 on the indoor side,
A louver-shaped air supply grill 43 is formed on the indoor side surface of the ceiling 74 and can easily change the direction of air supplied from the indoor supply pipe 40 and the like. The tip of the second-floor indoor supply pipe 42 arranged on the second floor of the indoor supply pipe 40 is connected to an indoor storage section for storing objects, that is, a closet 71 and push-in parts 73 and 74.

The ventilation unit body 20 includes an electric motor and a number of blades rotated by the electric motor, and uses the forced air flow generated by the rotating blades to remove the air inside the pipe. It can be forcibly moved. That is, the air in the external suction pipe 30 can be forcibly moved toward the indoor supply pipe 40, or the air from the indoor suction port 50 can be forcibly moved toward the external exhaust pipe 60. Specifically, although not particularly shown, the turbocharger includes a turbofan that pumps gas by utilizing centrifugal force of gas with the rotation of the impeller, and a casing that forms a flow passage from the turbofan. Things.

Although not shown, the ventilating unit main body 20 is connected to an air sucked from an indoor suction port 50 located on the indoor side and discharged from the external exhaust pipe 60 to the outside, and an external suction located on the outdoor side. A heat exchange unit is provided for exchanging heat between air sucked from the pipe 30 and supplied from the indoor supply pipe 40 into the room. The heat exchanging section can only transfer heat without directly mixing the internal air with the air discharged outside and the air supplied into the room. Specifically, a large number of straw-shaped ultra-thin thin-walled cylindrical tubes made of metal, resin, or the like having high thermal conductivity are arranged. Then, one of the air discharged to the outside and the air supplied to the room is passed through the inside of the straw-shaped cylindrical tube, and the other is passed around the cylindrical tube. Thereby, when there is a temperature difference between the air discharged to the outside of the room and the air supplied to the room, the heat having the higher temperature is transmitted to the lower temperature through the thin-walled cylindrical tube. .

Although not shown, the ventilation unit main body 20 includes air that is drawn in from the indoor suction port 50 located on the indoor side and discharged from the external exhaust pipe 60 to the outside, and an external suction pipe located on the outdoor side. Inhaled from 30 and supplied to indoor supply pipe 40
A moisture exchange unit for exchanging moisture contained in the air between the air supplied to the room and the room. This moisture exchange section can only move the moisture without directly mixing the inside air with the air discharged outside and the air supplied into the room. Specifically, a large number of straw-shaped ultra-thin thin-walled cylindrical tubes made of a moisture-absorbing material such as Japanese paper or chemical fiber that easily absorbs moisture are arranged. Then, one of the intake and the exhaust passes through the inside of the straw-shaped cylindrical tube, and the other passes around the cylindrical tube. Thus, when one of the air discharged to the outside and the air supplied to the room is air containing a large amount of water, and the other is dry air, the air containing the large amount of water is used. Is transmitted to the lower humidity through a thin-walled cylindrical tube made of a hygroscopic material.

Next, the operation and effect of the above embodiment will be described. According to the present embodiment, air outside the building is sucked from the external suction pipe 30, and the sucked air is
The air is supplied to the room on the same floor of the building by the indoor supply pipe 40 through the ventilation unit body 20. Thereby, fresh air outside the building can be supplied to the room on the same floor. Then, the indoor air is sucked into the ventilation unit main body 20 from the indoor suction port 50, and is discharged therefrom to the outside of the building by the external exhaust pipe 60. Thereby, the indoor air can be discharged to the outside of the building. Therefore, part of the room air inside the building and part of the air outside the building can be exchanged, so that the room can be ventilated on the same floor.

The central ventilation device 10 according to the present embodiment is formed independently for each of the first floor and the second floor of the building. For this reason, there is no need to pass air supply or exhaust piping in the vertical direction between the first floor and the second floor, and there is no need to provide a space for passing such vertical piping between the floors. This makes it possible to effectively utilize the internal space of the building without narrowing the living space due to the vertical piping space. Further, since such vertical piping is not required, the total length of the piping can be shortened, and the piping cost can be reduced. In addition, since the total length of the piping is short and only the ventilation capacity of each floor is enough, the capacity of the ventilation unit body 20 provided on each floor is also compared with the so-called whole building ventilation, which ventilates all the rooms of the building. It can be small. And, since it is formed independently for each floor of the first floor and the second floor, even if the building has more than three floors, it is sufficient to form the same piping, equipment and facilities for each floor, and the third floor It can easily accommodate buildings that are more than built. In addition, even in the case where a two-story building is extended or remodeled to a three-story building or more, it can be easily coped with only by incorporating the same device.

The tip of the second-floor indoor supply pipe 42 arranged on the second floor of the indoor supply pipe 40 is connected to the closet 71.
Also, it is connected to the surface of the ceiling 74 of the indoor storage section such as the push-in parts 73 and 72. For this reason, the indoor supply pipe 40 can be hidden inside the indoor storage section so as not to be seen from the indoor side, and the interior appearance can be improved. And since fresh air can be supplied indoors via an indoor storage part, ventilation of an indoor storage part can also be performed simultaneously.

The ventilation unit body 20 according to the present embodiment is provided with a heat exchange section for exchanging heat between air discharged outside the room and air supplied into the room. Therefore, in a state where the room is heated, the warm air exhausted from the room to the outside is absorbed by the heat exchange unit, and the absorbed heat is the air that the cold outdoor air is sucked into the room from the outside. Is added to As a result, air having a higher temperature than the outside is sent into the room, and a decrease in thermal efficiency in the heating state can be suppressed.

On the other hand, when the room is cooled, warm air sucked into the room from the outside is absorbed by the heat exchange unit, and the heat is released from the cooled air inside the room to the outside. Added to the air. Accordingly, air having a lower temperature than the outdoor air is sent into the room, and a decrease in thermal efficiency in the cooling state can be suppressed.

Further, the ventilation unit main body 20 includes a moisture exchange section for exchanging moisture contained in the air between the air sucked into the room from the outside and the air exhausted from the room to the outside. I have. For this reason, in a state where the indoor humidity is high, the air containing a large amount of moisture exhausted from the room to the outside is absorbed by the moisture exchange unit, and the absorbed moisture is converted from the outdoor dry air from the outdoor to the outside. Added to dry air as it is drawn into the room. Accordingly, air having a higher humidity than the outside is sent into the room, and the state where the humidity is higher than the outside can be always maintained.

Further, when the indoor humidity is low,
Air containing a lot of moisture sucked into the room from the outside,
The moisture is absorbed by the moisture exchange unit, and the moisture is added when the dry air in the room is discharged from the room to the outside. Accordingly, air having a lower humidity than the outside is sent into the room, and the humidity in the room can be constantly maintained at a state lower than the outside.

[0053]

Since the present invention is configured as described above, it has the following effects. ADVANTAGE OF THE INVENTION According to the 1st invention or 2nd invention of this invention, the piping space between upper and lower floors is unnecessary, the total length of piping can be shortened, the ventilation unit main body can be reduced in size, and a three-story or more house And a central ventilation device that can easily cope with the problem.

According to the third aspect of the present invention, the indoor supply pipe can be concealed so as not to be seen from the indoor side, so that the indoor appearance can be improved and the storage section in which moisture easily accumulates can be easily provided. A central ventilator that can ventilate the vehicle can be provided. According to the fourth aspect of the present invention, it is possible to provide a central ventilator capable of suppressing a decrease in indoor thermal efficiency such as cooling efficiency and heating efficiency even when indoor air is ventilated to fresh air.

According to the fifth aspect of the present invention, it is possible to provide a central ventilation device capable of suppressing a decrease in efficiency of humidity adjustment.

[Brief description of the drawings]

FIG. 1, showing an embodiment of the present invention, is a schematic diagram illustrating a central ventilation device.

FIG. 2, showing an embodiment of the present invention, is a schematic perspective view illustrating a building in which a central ventilation device is arranged.

FIG. 3, showing an embodiment of the present invention, is a schematic plan view showing an arrangement of pipes on the first floor of a central ventilation device.

FIG. 4, showing an embodiment of the present invention, is a schematic plan view showing an arrangement of pipes on the second floor of a central ventilation device.

FIG. 5, showing an embodiment of the present invention, is a longitudinal sectional view illustrating a state where a ventilation unit main body is attached to a ceiling.

FIG. 6, showing an embodiment of the present invention, is a longitudinal sectional view illustrating a state in which an air supply grill is mounted on a ceiling.

FIG. 7 is a schematic diagram showing a conventional central ventilation device.

[Explanation of symbols]

 10 Central ventilation device 11 Central ventilation device for the first floor 12 Central ventilation device for the second floor 20 Ventilation unit body 21 Ventilation unit body for the first floor 22 Ventilation unit body for the second floor 30 External suction pipe 31 External suction pipe for the first floor 32 External suction for the second floor Piping 40 Indoor supply pipe 41 First floor indoor supply pipe 42 Second floor indoor supply pipe 43 Air supply grille 50 Indoor intake 51 First floor indoor intake 52 Second floor indoor intake 60 External exhaust pipe 61 First floor external exhaust pipe 62 External exhaust pipe for the second floor 71 Closet 72 Closet 73 Push-in 74 Ceiling 100 Central ventilation system 110 Ventilation unit body 120 External suction pipe 130 Indoor supply pipe for the first floor 140 Vertical connection pipe 150 Indoor supply pipe for the second floor 160 Indoor exhaust pipe 170 External exhaust Piping

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 7/10 101 E04B 1/70 F24F 7/08 F24F 7/10

Claims (5)

(57) [Claims] 1. A Oite a building having a plurality of floors, the
Each floor is installed independently on the ceiling of each floor of the building.
Central ventilator for fresh external air
And at the same time, exhaust the air inside the room and
In a building designed to ventilate , the central ventilation device has a ventilation unit directly provided with an intake port.
It is configured to include a knit body and a plurality of outlets,
Building floors are blown out from the outlet of each floor.
And is sucked from the ventilation unit inlet
Ventilated by air, the outlet is located near the outer periphery of the building in plan view.
The inlet is provided in an inner part of the building
The building characterized by being. Te building smell as claimed in claim 1, wherein the ventilation
External exhaust piping and connection between the unit and the outdoor space
And external suction piping, and the ventilation unit
Indoor supply pipe connecting the main body and the indoor space
The indoor supply pipe includes the external exhaust pipe and the
A building characterized by being longer than the external suction pipe . 3. The building according to claim 1 , wherein each floor is provided with a plurality of rooms, and these rooms are ventilated by the ventilation device provided on the floor. Building characterized by being done. 4. The building according to claim 1 , further comprising an external intake pipe and an external exhaust pipe communicating between the ventilation unit main body and an outdoor space, wherein the external intake pipe and the external exhaust pipe are provided. A building characterized by an exhaust pipe extending in parallel. 5. The building according to claim 1 , wherein said building is a house.