JP6921704B2 - Ventilation system of the building - Google Patents

Description

The present invention relates to a building ventilation system.

Buildings such as houses may be provided with a ventilation system for indoor ventilation (see, for example, Patent Document 1). The ventilation system is equipped with a ventilation passage (ventilation duct, etc.) that extends from the outside to the inside, and ventilation is performed by taking in the outdoor air indoors or discharging the indoor air to the outside through the ventilation passage. It has become.

Japanese Unexamined Patent Publication No. 9-79648

Here, in the above-mentioned ventilation system, since the ventilation passage extends from the outside to the inside, it is assumed that the outdoor noise enters the room through the ventilation passage at the time of indoor ventilation through the ventilation passage. For example, when construction is being carried out around a building, it is assumed that the noise of the construction will enter indoors. In that case, the noise may make people in the building feel uncomfortable, and countermeasures are required.

The present invention has been made in view of the above circumstances, and has a configuration having a ventilation passage extending from the outside to the inside, and by suppressing outdoor noise from entering the room through the ventilation passage, the inside of the building. Its main purpose is to provide a ventilation system for buildings that can reduce human discomfort.

In order to solve the above problems, the building ventilation system of the first invention is a building ventilation system provided with a ventilation passage extending from the outside to the inside and ventilating indoors through the ventilation passage. The opening / closing device that opens and closes, a noise determining means for determining whether or not noise is generated outdoors, and the ventilation passage are closed when it is determined that noise is generated outdoors by the noise determining means. The opening / closing control means for controlling the opening / closing device is provided.

According to the present invention, when noise is generated outdoors, the ventilation passage extending from the outside to the inside is closed by the opening / closing device, so that it is possible to suppress the outside noise from entering the room through the ventilation passage. .. As a result, it is possible to prevent people in the building from feeling uncomfortable due to outdoor noise.

In the first invention, the building ventilation system of the second invention is provided with an indoor space through which the ventilation passage is connected, and includes a person detecting means for detecting the presence or absence of a person in the indoor space. The opening / closing control means controls the opening / closing device so as to close the ventilation passage when a person is detected by the person detecting means.

Even when outdoor noise enters an indoor space through a ventilation passage, there is no problem that people feel uncomfortable due to the noise when there are no people in the indoor space. Therefore, in view of this point, in the present invention, the ventilation passage is closed when there is a person in the indoor space through which the ventilation passage is connected. As a result, it is possible to prevent the ventilation passage from being closed even though there are no people in the indoor space, and the ventilation of the indoor space being unnecessarily stopped.

In the second invention, the ventilation system of the building of the third invention is such that the ventilation passage is divided into a first passage portion leading to the outside and an indoor space branched on the indoor side of the first passage portion and different from each other. It has a plurality of second passage portions that communicate with each other, and outdoor air is taken into each indoor space through the first passage portion and each of the second passage portions. It is provided for each second passage portion, and each opens and closes the second passage portion. The person detecting means detects the presence or absence of a person in each indoor space, and the opening / closing control means When a person is detected by the person detecting means, each opening / closing device is controlled so as to close the second passage portion leading to the indoor space where the person is detected.

In a configuration in which outdoor air is taken in (supplied) to a plurality of indoor spaces through a first passage and each second passage (that is, a ventilation passage), outdoor noise is introduced into each indoor space through each of these passages. It is expected to be transmitted. Therefore, in the present invention, an opening / closing device is provided for each second passage portion, and the second passage portion of each indoor space leading to the indoor space where a person is detected is closed by the opening / closing device. As a result, it is possible to suppress the transmission of noise to the indoor space regardless of the presence of a person in any of the indoor spaces.

In the third invention, the ventilation system of the building of the fourth invention is provided on the upstream side of the branch portion to each of the second passages in the ventilation passage, and the outdoor air is blown into each of the indoors through the ventilation passage. The opening / closing control means includes a ventilation device that conveys the space to the space and a ventilation control means that controls the operation of the ventilation device. If it is a part of the above, the second passage portion leading to the part of the indoor space is closed, and the second passage portion leading to the other indoor space is opened. Each opening / closing device is controlled, and the ventilation control means operates the ventilation device when the partial opening process is performed by the opening / closing control means.

According to the present invention, when there is a person in only a part of the indoor spaces, the second passage part leading to the part of the indoor space is closed, while the other second passage part is closed. Is released. Then, the ventilation device is operated in the partially open state of the second passage portion. In this case, since the outdoor air is transported to the indoor space where there are no people through the open second passage, the indoor ventilation is performed while suppressing the indoor people from feeling uncomfortable due to the outdoor noise. It becomes possible.

In the first invention, the ventilation system of the building of the fifth invention is such that the ventilation passage is branched into a first passage portion leading to the outside and an indoor side of the first passage portion, and leads to different indoor spaces. It has a plurality of second passage portions, and outdoor air is taken into each indoor space through the first passage portion and each of the second passage portions, and the opening / closing device is the first. 1 It is characterized in that it opens and closes a passage portion.

In a configuration in which outdoor air is taken in (supplied) to a plurality of indoor spaces through a first passage and each second passage (that is, a ventilation passage), outdoor noise is introduced into each indoor space through each of these passages. It is expected to be transmitted. Therefore, in the present invention, an opening / closing device is provided in the first passage portion, and when noise is generated outdoors, the opening / closing device closes the first passage portion. In this case, it is possible to suppress the transmission of outdoor noise to each second passage portion through the first passage portion, and as a result, it is possible to suppress the transmission of noise to each indoor space through each second passage portion. can. As a result, the transmission of noise to a plurality of indoor spaces can be effectively suppressed by one switchgear.

In the building ventilation system of the sixth invention, in any one of the first to fifth inventions, the opening / closing device is provided in the ventilation passage to open / close the ventilation passage, and opens / closes the opening / closing body. It has an opening / closing driving unit for driving, and the opening / closing body is formed with a sound absorbing material.

According to the present invention, since the opening / closing body for opening / closing the passage is formed with the sound absorbing material in the ventilation passage, the outdoor noise is more transmitted indoors when the ventilation passage is closed by the opening / closing body. It can be further suppressed.

The figure which shows the building which installed the ventilation system. A vertical cross-sectional view showing a configuration inside an air supply grill provided with a switchgear. The figure which shows the electrical composition of a ventilation system. The flowchart which shows the ventilation control processing.

Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. Note that FIG. 1 is a diagram showing a building provided with a ventilation system.

As shown in FIG. 1, a building 10 such as a house is a two-story building having a first floor portion 11 and a second floor portion 12. Living rooms 14 to 16 and washrooms 17 are provided as indoor spaces on the first floor portion 11. An attic space 18 is provided above these indoor spaces 14 to 17. The attic space 18 is formed as an inter-floor space located between the floors between the first floor portion 11 and the second floor portion 12.

In each of the indoor spaces 14 to 17, adjacent indoor spaces are partitioned by a partition wall 21. The partition wall 21 is formed with a ventilation portion 22 that communicates with adjacent indoor spaces. The ventilation portion 22 may be formed as a ventilation port in the partition wall 21, or may be formed as an undercut of an entrance / exit door provided in the partition wall 21. Ventilation is possible between adjacent indoor spaces through the ventilation portion 22.

In the building 10 of the present embodiment, a whole-building ventilation system is provided on the first floor portion 11 and the second floor portion 12, respectively. In the following, among these ventilation systems, the ventilation system 30 of the first floor portion 11 will be described. The second floor portion 12 is also provided with the same ventilation system as the first floor portion 11.

The ventilation system 30 is a system that ventilates a plurality of indoor spaces on the first floor portion 11, and is installed in the attic space 18. The ventilation system 30 includes a ventilation device 31. The ventilation device 31 is installed above the washroom 17 in the attic space 18. Specifically, the ceiling of the washroom 17 is a descending ceiling set at a position lower than the ceilings of the living rooms 14 to 16, and the ventilation device 31 is installed above the descending ceiling.

The intake duct 32 and the discharge duct 33 are connected to the ventilation device 31. Both the intake duct 32 and the discharge duct 33 are connected to the outside. The intake duct 32 has an intake port 32a opened outdoors at its end, and the discharge duct 33 has a discharge port 33a opened outdoors at its end. The intake port 32a and the discharge port 33a are provided on the outer wall 28 of the building 10 and are arranged side by side in the vertical direction.

A plurality of (four in this embodiment) air supply ducts 34 are connected to the ventilation device 31. Each air supply duct 34 is connected to an air supply grill 36 provided in each of the living rooms 14 to 16. The air supply grills 36 are provided on the ceilings of the living rooms 14 to 16, and more specifically, a plurality of air supply grills 36 (two in the present embodiment) are provided on the ceilings of the living rooms 14, and the air supply grills 36 are provided in the ceilings of the living rooms 15 and 16. Only one air supply grill 36 is provided on the ceiling of the air supply grill 36. A suction grill 37 is provided on the ceiling of the washroom 17. The suction grill 37 is connected to the ventilation device 31.

The ventilation device 31 has an intake fan 38 and an exhaust fan 39. When the intake fan 38 operates, outdoor air (outside air) is taken in (introduced) into the ventilation device 31 through the intake duct 32, and the taken-in air is taken in (introduced) into each air supply through each air supply duct 34. It is supplied to the grill 36. Then, the supplied air is blown out from each air supply grill 36 to the living rooms 14 to 16.

In this case, the "first passage portion" is formed by the intake duct 32 (specifically, the internal space thereof). Further, the air supply passage portion 46 (see also FIG. 2) is formed by the air supply duct 34 and the air supply grill 36 to which the air supply duct 34 is connected (for details, the internal space of both 34 and 36). , The air supply passage portion 46 corresponds to the "second passage portion". A plurality of the air supply passage portions 46 are branched on the downstream side of the intake duct 32 (first space portion), and the plurality of air supply passage portions 46 are connected to the living rooms 14 to 16, respectively. Further, a ventilation passage 47 is formed by an intake duct 32 (specifically, an internal space thereof) and each air supply duct 34 (specifically, an air supply passage portion 46), and the ventilation passage 47 extends from the outside to the inside. Further, each of the living rooms 14 to 16 corresponds to an "indoor space through which the ventilation passage (second ventilation portion) is connected".

As described above, the air blown (supplied) from each of the air supply grills 36 to the living rooms 14 to 16 then flows (refluxes) into the washroom 17 through the ventilation portion 22 formed in the partition wall 21. .. On the first floor portion 11, a return path for returning the air supplied to each of the living rooms 14 to 16 to the washroom 17 is formed including each ventilation portion 22. Then, air is returned from each of the living rooms 14 to 16 to the washroom 17 through the return path.

When the discharge fan 39 operates, the air that has flowed into the washroom 17 is taken into the ventilation device 31 via the suction grill 37, and the taken-in air is discharged to the outside through the discharge duct 33. As described above, in the main ventilation system 30, ventilation of each living room 14 to 16 is performed in the first floor portion 11.

In the main ventilation system 30, basically, the ventilation operation (that is, the 24-hour ventilation operation) is performed by the constant ventilation device 31. When the ventilation device 31 is operating (during operation), both the intake fan 38 and the exhaust fan 39 are in the operating state, and when the ventilation device 31 is stopped, the operations of the fans 38 and 39 are stopped. It has become.

Although not shown, the ventilation device 31 contains outdoor air taken into the ventilation device 31 via the intake duct 32 and indoor air taken into the ventilation device 31 via the suction grill 37. A heat exchanger is provided to exchange heat between them. As a result, the temperature of the air (outside air) supplied from the ventilation device 31 to the living rooms 14 to 16 via the air supply ducts 34 can be brought close to the indoor temperature in advance.

By the way, in the above-mentioned ventilation system 30, since the ventilation passage 47 formed by the intake duct 32 and each air supply duct 34 extends from the outside to the inside, the noise is ventilated when the noise is generated outdoors. There is a risk of entering the living rooms 14 to 16 through the passage 47. Therefore, in view of such a point, the present ventilation system 30 is provided with a configuration for suppressing outdoor noise from entering the room through the ventilation passage 47, and the configuration will be described below.

Each air supply grill 36 is provided with an opening / closing device 41 for opening / closing the air supply passage portion 46. FIG. 2 shows the configuration inside the air supply grill 36 provided with the switchgear 41. As shown in FIG. 2, the opening / closing device 41 includes a pair of opening / closing bodies 42 provided in the air supply grill 36 to open / close the air supply passage portion 46, and an opening / closing drive unit 43 (for example, electric) for opening / closing the opening / closing bodies 42. It is equipped with a motor, etc.). The opening / closing body 42 is formed in a plate shape and is rotatably attached to the air supply grill 36 via the shaft portion 44. Each opening / closing body 42 is configured to open / close the air supply passage portion 46 by rotating around the shaft portion 44. That is, each opening / closing body 42 can be switched between an open state in which the air supply passage portion 46 is opened and a closed state in which the air supply passage portion 46 is closed (see the alternate long and short dash line in FIG. 2). In the open state of the body 42, air is allowed to be supplied to the living rooms 14 to 16 through the air supply passage portion 46, while in the closed state of each opening / closing body 42, the living rooms 14 to 14 through the air supply passage portion 46 are allowed. The supply of air to 16 is prohibited.

In such a configuration, the air supply passage portion 46 can be individually opened and closed by the opening / closing device 41 (switchgear 42) for each air supply passage portion 46. As a result, by operating the ventilation device 31 (intake fan 38, exhaust fan 39) with only a part of the air supply passage portion 46 open, the part of each of the living rooms 14 to 16 is concerned. It is possible to supply outdoor air through the air supply passage portion 46 only to the living room through which the air supply passage portion 46 communicates.

The opening / closing body 42 has an opening / closing body main body 42a made of a metal plate material, and a plate-shaped sound absorbing material 42b provided on one side of the opening / closing body main body 42a. The sound absorbing material 42b is formed of a material (material) having excellent sound absorbing performance, and is formed of, for example, foamed polyurethane. The sound absorbing material 42b is arranged so that the plate surface faces the upstream side (in other words, the first passage portion side) of the air supply passage portion 46 in the closed state of the opening / closing body 42. The configuration of the opening / closing body 42 is not necessarily limited to such a configuration, and for example, the entire opening / closing body 42 may be formed of a sound absorbing material.

Next, the electrical configuration of the ventilation system 30 will be described with reference to FIG. 3 in addition to FIG. FIG. 3 is a diagram showing an electrical configuration of the ventilation system 30.

The building 10 is provided with a noise sensor 52 that detects outdoor noise. The noise sensor 52 detects the noise generated around the building 10, and is provided on, for example, the outer wall 28 of the building 10. Specifically, the noise sensor 52 is an outer wall 28 (hereinafter, outer wall 28a) provided with the intake port 32a of the intake duct 32 and the discharge port 33a of the discharge duct 33 among the outer walls 28 provided on the outer periphery of the building 10. It is provided on the same outer wall 28a as the above), and more specifically, it is arranged near the intake port 32a and the discharge port 33a.

In the building 10, a person detection sensor 53 is provided in each of the living rooms 14 to 16. The human detection sensor 53 detects the presence or absence of a person by using the living rooms 14 to 16 in which the sensor 53 is provided as a detection target. The person detection sensors 53 in each of the living rooms 14 to 16 correspond to the person detection means.

As shown in FIG. 3, the ventilation system 30 includes an open / close control means and a controller 51 as a ventilation control means. The controller 51 is mainly composed of a microcomputer whose CPU and the like are well known, and is provided on the wall surface of the living room 14, for example.

A noise sensor 52 and an individual detection sensor 53 are connected to the controller 51. Sequential detection results are input to the controller 51 from these sensors 52 and 53. Further, the ventilation device 31 (intake fan 38 and discharge fan 39) and each switchgear 41 (switchgear drive unit 43) are connected to the controller 51. The controller 51 controls the operation of the ventilation device 31 and controls the opening and closing of each switchgear 41 based on the detection results from the sensors 52 and 53.

Next, the ventilation control process executed by the controller 51 will be described with reference to the flowchart shown in FIG. This process is repeatedly executed at a predetermined cycle.

As shown in FIG. 4, first, in step S11, it is determined whether or not noise is generated outdoors based on the detection result from the noise sensor 52 (corresponding to the noise determination means). Specifically, when the noise value detected by the noise sensor 52 exceeds a predetermined value, it is determined that noise is generated outdoors, and the noise value detected by the noise sensor 52 is equal to or less than the predetermined value. It is judged that no noise is generated outdoors. If noise is generated outdoors, the process proceeds to step S12.

In step S12, it is determined whether or not a person exists in any of the living rooms 14 to 16 based on the detection result from each person detection sensor 53. If there are people in any of the living rooms 14 to 16, the process proceeds to step S13.

In step S13, it is determined whether a person is present in only some of the living rooms 14 to 16 or whether a person is present in all the living rooms 14 to 16. If a person is present only in a part of the living rooms, the process proceeds to step S14 to identify which living room the person is present in.

In step S15, a partial opening process is performed. In this process, among the switchgear 41, the switchgear 41 (hereinafter, this reference numeral) of the air supply passage portion 46 (hereinafter, referred to as X) leading to the living room (that is, the room in which a person exists) specified in step S14. A closing signal is output to (adding X to the code). As a result, the opening / closing body 42 is closed by the opening / closing drive unit 43 of the opening / closing device 41X, and the air supply passage portion 46X is closed. That is, in this case, the air supply passage portion 46X leading to the living room in which the person exists is closed.

Further, in the partial opening process, an open signal is output to the switchgear 41 (hereinafter, Y is added to this reference numeral) other than the switchgear 41X among the switchgear 41. As a result, the opening / closing body 42 is opened by the opening / closing drive unit 43 of the opening / closing device 41Y, and the air supply passage portion 46 (hereinafter, Y is added to this reference numeral) is opened. That is, in this case, the air supply passage portion 46Y leading to the living room where no person exists is opened.

In the following step S16, the ventilation device 31 is operated by outputting an operation signal to the ventilation device 31. As a result, of the air supply passage portions 46, outdoor air is supplied to the living room, that is, to the living room where no person exists, through the open air supply passage portion 46Y. At this time, if the ventilation device 31 is already in operation, the operation is continued. After that, this process ends.

In the previous step S13, if there are people in all the living rooms 14 to 16, the process proceeds to step S17. In step S17, the operation of the ventilation device 31 is stopped by stopping the output of the operation signal to the ventilation device 31. As a result, the supply of outdoor air to each of the living rooms 14 to 16 is stopped. At this time, if the operation of the ventilation device 31 is already stopped, the stopped state is continued.

In the following step S18, the entire closing process is performed. In this process, a closing signal is output to all of the switchgear 41. As a result, all the air supply passages 46 are closed by each switchgear 41. After that, this process ends.

If no noise is generated outdoors in step S11 described above, or if no person is present in any of the living rooms 14 to 16 in step S12 described above, the process proceeds to step S19. In step S19, all release processing is performed. In this process, an open signal is output to all of the switchgear 41. As a result, all the air supply passages 46 are opened by each switchgear 41. In the following step S16, the ventilation device 31 is operated. As a result, outdoor air is supplied to each of the living rooms 14 to 16 through each of the air supply passage portions 46. After that, this process ends.

According to the configuration of the present embodiment described in detail above, the following excellent effects can be obtained.

When noise is generated outdoors, the ventilation passage 47 (specifically, the air supply passage 46) extending from the outside to the inside (each room 14 to 16) is closed by the opening / closing device 41, so that the outdoor noise is ventilated. It is possible to prevent the entry into the living rooms 14 to 16 through the passage 47. As a result, it is possible to prevent people in the living rooms 14 to 16 from feeling uncomfortable due to outdoor noise.

Even when outdoor noise enters the living rooms 14 to 16 through the ventilation passage 47, there is no problem that people feel uncomfortable due to the noise when there are no people in the living rooms 14 to 16. Therefore, in the above embodiment, in view of this point, the ventilation passage 47 is closed when there is a person in the living rooms 14 to 16 through which the ventilation passage 47 is connected. As a result, it is possible to prevent the ventilation passage 47 from being closed and the indoor ventilation being unnecessarily stopped even though there are no people in the living rooms 14 to 16.

Specifically, the ventilation passage 47 is a plurality of air supply passage portions 46 (in the second passage portion) branched on the downstream side of the intake duct 32 leading to the outside (the inside of the duct corresponds to the first passage portion). The air supply passage section 46 leads to each of the living rooms 14 to 16. In such a configuration, each air supply passage portion 46 is provided with a switchgear 41 for opening and closing the passage portion 46, and the air supply passage portion leading to the living room in which a person is detected among the living rooms 14 to 16 is provided. The 46 was closed by the switchgear 41. As a result, it is possible to suppress the transmission of outdoor noise to any of the living rooms 14 to 16 regardless of whether there is a person in the living room.

Further, when there is a person in only a part of the rooms 14 to 16, the air supply passage portion 46 leading to the part of the living room is closed by the opening / closing device 41, and the other air supply passage portion 46 Was opened by the opening / closing device 41. Then, the ventilation device 31 is operated in a partially open state of the air supply passage portion 46. In this case, since the outdoor air is transported to the unoccupied living room through the open air supply passage portion 46, the indoor ventilation is performed while suppressing the person in the living room from feeling uncomfortable due to the outdoor noise. It becomes possible.

In the switchgear 41, an opening / closing body 42 provided in the air supply passage portion 46 (and by extension, the ventilation passage 47) to open / close the passage portion 46 is formed with the sound absorbing material 42b. As a result, when the air supply passage portion 46 is closed by the opening / closing body 42, it is possible to further suppress the transmission of outdoor noise to the living rooms 14 to 16.

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

-In the above embodiment, the switchgear 41 is provided for each air supply passage portion 46 (each second passage portion), but by changing this, the switchgear can be changed to, for example, the intake duct 32 (the inside thereof is the first passage). It may be provided in a portion), and the intake duct 32 may be opened and closed by an opening / closing device. In such a configuration, when noise is generated outdoors, the inside of the intake duct 32 is closed by an opening / closing device. In this case, by closing the inside of the intake duct 32, it is possible to suppress outdoor noise from entering each air supply passage portion 46 through the inside of the intake duct 32, and as a result, each of these air supply passages. It is possible to suppress the transmission of outdoor noise to the living rooms 14 to 16 through the unit 46. That is, in this case, it is possible to effectively suppress the transmission of outdoor noise to all 14 to 16 of each living room by one switchgear. Further, in this case, since only one switchgear needs to be provided, it is possible to reduce the cost related to the installation of the switchgear as compared with the ventilation system 30 of the above embodiment.

-In the above embodiment, the switchgear 41 is provided on the air supply grill 36, but it may be provided in the middle of the air supply duct 34. Even in that case, the air supply passage portion 46 can be opened and closed by the opening / closing device 41. Further, the configuration of the switchgear 41 is not necessarily limited to the configuration of the above embodiment, and for example, the switchgear 42 may be a slide type, and the air supply passage portion 46 may be opened and closed by the slide. Further, the opening / closing body 42 does not necessarily have the sound absorbing material 42b and may be formed without the sound absorbing material.

-In the above embodiment, the plurality of indoor spaces through which each air supply passage portion 46 communicates are all living rooms 14 to 16 (living room space), but a plurality of indoor spaces through which each air supply passage portion 46 communicates. At least a part of the space may be a non-living space such as a corridor or a washroom.

In the above embodiment, the air in the washroom 17 is taken into the ventilation device 31 through the suction grill 37, and the taken-in air is discharged to the outside through the discharge duct 33. Therefore, a "ventilation passage extending from the outside to the inside" is formed by the discharge duct 33, the suction grill 37, and the like (specifically, the internal spaces of both 33 and 37). Therefore, it is assumed that outdoor noise enters the room through this ventilation passage. Therefore, in the configuration of the above embodiment, an opening / closing device for opening / closing the ventilation passage may be provided. For example, it is conceivable to provide such an opening / closing device on the suction grill 37. Even in such a configuration, when noise is generated outdoors, if the ventilation passage is closed by a switchgear, it is possible to suppress the outdoor noise from entering the washroom 17.

An operation unit that can individually open and close the switchgear 41 may be provided. In that case, for example, when playing the piano or watching a movie at a loud volume in any of the rooms 14 to 16 at night, the opening / closing device 41 of the air supply passage portion 46 leading to the living room is closed by the operation of the operation unit. By doing so, it is possible to prevent the sound of the piano or the movie from leaking from the living room to the outside through the air supply passage portion 46. Therefore, it is possible to play the piano even at night without causing any inconvenience to the neighbors.

-In the above embodiment, the ventilation system 30 is a whole-building ventilation system that supplies outdoor air to a plurality of indoor spaces (living rooms 14 to 16), but as a ventilation system, only one indoor space is outdoors. There is also a configuration that supplies the air of. Therefore, the present invention may be applied to such a ventilation system.

10 ... Building, 14-16 ... Living room, 30 ... Ventilation system, 41 ... Switchgear, 42 ... Opening and closing body, 42b ... Sound absorbing material, 43 ... Opening and closing drive unit, 46 ... Air supply passage part as second passage part, 47 ... Ventilation passage, 51 ... Switchgear control means and controller as ventilation control means, 53 ... Person detection sensor.

Claims (2)

Equipped with a ventilation passage extending from the outside to the inside
The ventilation passage has a first passage portion leading to the outside and a plurality of second passage portions that are branched on the indoor side of the first passage portion and lead to different indoor spaces.
A ventilation system for a building that ventilates each indoor space through the first passage and each of the second passages.
A plurality of switchgear that is provided for each of the second passage portions and each opens and closes the second passage portion.
A noise determination means for determining whether or not noise is generated outdoors,
A person detecting means for detecting the presence or absence of a person in the indoor space for each of the indoor spaces,
When it is determined by the noise determining means that noise is being generated outdoors and the person is detected by the person detecting means, the second passage portion leading to the indoor space where the person is detected is closed. An opening / closing control means for controlling each opening / closing device,
Equipped with a,
Moreover,
A ventilation device provided on the upstream side of the branch portion to each of the second passages in the ventilation passage, and a ventilation device for transporting outdoor air to each indoor space through the ventilation passage.
A ventilation control means for controlling the operation of the ventilation device is provided.
When the indoor space in which a person is detected by the person detecting means is a part of each of the indoor spaces, the opening / closing control means closes the second passage portion leading to the part of the indoor space. However, each switchgear is controlled so as to perform a partial opening process for opening the second passage portion leading to the other indoor space.
The ventilation control means is a ventilation system for a building, characterized in that the ventilation device is operated when the partial opening process is performed by the opening / closing control means. The switchgear includes a closing member for opening and closing the second passage portion provided in said second passage portion, the opening and closing drive unit for opening and closing the opening-
The ventilation system for a building according to claim 1, wherein the opening / closing body is formed with a sound absorbing material.

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