JP7451646B1 - ventilation system - Google Patents

Abstract

[Problem] To provide a ventilation device that ventilates bacteria and dust taken into an entrance without passing through the room. A ventilation device 3 installed in a building has an air supply passage 30 for taking outdoor air indoors and an exhaust passage 31 for discharging indoor air outdoors. Further, the ventilation device 3 includes a ventilation fan 32 provided in at least one of the air supply passage 30 and the exhaust passage 31. The exhaust passage 31 has at least one exhaust port 37 provided indoors and an exhaust port 38 provided outdoors. The exhaust port 37 is provided at least at the entrance 27 of the building. [Selection diagram] Figure 3

Description

The present invention relates to a ventilation system installed in a building.

Ventilation, which takes air into the room from outside (air supply) and exhausts the indoor air outside (exhaust), plays an important role in maintaining the indoor air environment. For example, ventilation has effects such as indoor ventilation to prevent sick house syndrome caused by airtightness of buildings, and exhausting moisture and odors generated locally in bathrooms, toilets, kitchens, etc. Ventilation methods include the first type ventilation method in which air supply and exhaust are performed by a machine such as a ventilation fan, the second type ventilation method in which air supply is performed by a machine such as a ventilation fan, and the second type ventilation method in which air supply and exhaust is performed by a machine such as a ventilation fan. There is a type 3 ventilation method that is carried out by

Patent Document 1 introduces a 24-hour ventilation system for buildings. The building has a living room, master bedroom, kitchen, washroom, bathroom, toilet, balcony, etc. Air supply ports communicating with the outdoors are provided on the balcony sides of rooms such as the living room and master bedroom adjacent to the balcony. Ventilation vents (exhaust vents) are provided in each of the ceilings of the washroom, bathroom, and toilet. Each ventilation opening is connected to a ventilation fan via a duct. The ventilation fan is connected to an exhaust port (exhaust port) on the balcony side via a duct. As a result, outside air is taken indoors through the air supply port, is guided into the room and through the hallway by the ventilation fan to the ventilation port, and is discharged outdoors through the duct.

Japanese Patent Application Publication No. 2002-039579 Japanese Patent Application Publication No. 2020-056181

In the 24-hour ventilation system described in Patent Document 1, the entrance is not provided with an air supply port or an air exhaust port. Therefore, there is no ventilation at the entrance. Therefore, when a person enters the room from outside, bacteria, dust, etc. are brought into the room and remain in the entrance and the hallways leading from the entrance to each room. A ventilation fan blows air from the air supply vent through the indoors toward the exhaust vent for ventilation. Therefore, bacteria, dust, etc. that remain in the entrance and the hallway leading from the entrance to each room may be taken into the room by the air flow. In addition, bacteria, dust, etc. attached to clothes are brought into the room together with the clothes. Therefore, like the entrance door described in Patent Document 2, it is conceivable to provide the entrance door with a vent that allows outside air to be brought into the room through a mesh portion. However, in this case, the vent functions as an air supply port, so the outside air taken in from the entrance passes through the room. In other words, bacteria and dust taken into the entrance are brought into the room through the hallway.

In view of the above background, it is an object of the present invention to provide a ventilation device that can exhaust bacteria and dust taken into the entrance to the outdoors without passing through the room.

In order to solve the above problems, the present invention provides a ventilation device (3) provided in a building (1), which includes an air supply passageway (30) for taking outdoor air indoors, and an air supply passageway (30) for taking outdoor air indoors. an exhaust passage (31) for discharging air to the outdoors; and a ventilation fan (32) provided in at least one of the air supply passage and the exhaust passage, the exhaust passage being provided indoors. and at least one exhaust port (37) provided outdoors, and the exhaust port (38) is provided at least at the entrance (27) of the building.

According to this aspect, the air in the entrance is discharged outdoors from the exhaust port provided in the entrance through the exhaust passage. Therefore, while ventilating the room, it is possible to discharge bacteria and dust taken into the entrance to the outdoors without passing through the room.

In the above aspect, the ventilation fan is provided in the exhaust passage, and the exhaust passage includes an upstream pipe section (40) provided between the exhaust port and the ventilation fan, and an upstream pipe section (40) provided between the ventilation fan and the ventilation fan. It is preferable to have a downstream pipe section (41) provided between the discharge port and the discharge port.

According to this aspect, since air flows quickly in the pipe section of the exhaust passage, bacteria and dust are less likely to accumulate therein. Therefore, bacteria and dust are prevented from staying in the exhaust passage, and bacteria and dust staying in the exhaust passage are prevented from being taken into the room through the gap. Further, by adjusting the lengths of the upstream pipe section and the downstream pipe section, the ventilation fan can be placed at a desired position, increasing the degree of freedom in the arrangement of the ventilation fan.

In the above aspect, the ventilation fan is provided in the exhaust passage, the exhaust port is further provided in the bathroom (23), washroom (22), or toilet (24) of the building, and the exhaust passage is A plurality of upstream pipe sections (40) provided between each of the exhaust ports and the ventilation fan, and a downstream pipe section (41) provided between the ventilation fan and the discharge port. It is preferable that the plurality of upstream pipe sections are connected to each other via a switching valve (42).

Since the number of general-purpose ventilation fans that can be connected is limited, each of the above upstream pipe sections cannot be connected to a general-purpose ventilation fan. According to this aspect, since the plurality of upstream pipe sections are aggregated by the switching valve, there is no need to prepare a special ventilation fan in addition to a general-purpose ventilation fan. Therefore, an increase in the cost of the ventilation device can be suppressed. In addition, it is possible to switch between ventilation at the entrance, ventilation in the bathroom, ventilation in the laundry room, or ventilation in the toilet. In the ventilation device, the exhaust port, the exhaust passage, the switching valve, the ventilation fan, and at least a portion of the common pipe section may be integrally provided.

In the above aspect, a sensor (44) or a switch corresponding to the bathroom, the washroom or the toilet provided with the exhaust port, and the switching valve based on the detection result of the sensor or the state of the switch. It is preferable to further include a control device (45) for controlling.

According to this aspect, the ventilation of the entrance, the ventilation of the bathroom, the ventilation of the washroom, or the ventilation of the toilet are switched depending on the usage status of the bathroom, the washroom, or the toilet. In other words, there is no need for a switching operation and the ventilator can be used conveniently, improving the marketability of the ventilator.

In the above aspect, it is preferable that the exhaust port is provided at a lower part of the wall of the entrance.

According to this aspect, ventilation is performed from the lower part of the entrance where dust tends to accumulate more easily than the upper part of the entrance. Therefore, the amount of dust that accumulates in the entrance is reduced compared to the case where the exhaust port is provided at the upper part of the wall of the entrance.

In the above aspect, the entrance is provided with a storage section (28, 29) that defines a storage space (51) for storing clothes (53) or shoes, and the exhaust port is provided at a lower part of the storage section. Preferably, the storage space forms a part of the exhaust passage.

According to this aspect, bacteria and dust attached to clothes or shoes can be removed in addition to ventilation of the entrance.

In the above aspect, the storage section has a first exhaust passage section (56) extending from the exhaust port to the upper part of the storage space, and is configured such that air flows from top to bottom in the storage space. Good.

According to this aspect, bacteria and dust attached to clothes or shoes stored in the storage section are dropped to the bottom of the storage space by the air flow.

In the above aspect, the storage section preferably includes at least one of a filter (57) and a sterilization device provided in the first exhaust passage section.

According to this aspect, bacteria and dust staying at the entrance are adsorbed by the filter. Alternatively, germs that have accumulated at the entrance are removed by a sterilization device. Therefore, bacteria and dust can be prevented from flowing outdoors through the storage space, exhaust passage, and ventilation fan and staying indoors.

The present invention can provide a ventilation device that can exhaust bacteria and dust taken into an entrance to the outdoors without passing through the room.

Layout diagram of the ventilation system according to the first embodiment Schematic diagram of the clothes storage section Illustration of air flow in a building Layout diagram of a ventilation system according to the second embodiment

Hereinafter, several embodiments according to the present invention will be described in detail with reference to the drawings. In the following embodiment, an example will be described in which a ventilation device 3 is provided in a dwelling unit 2 of a building 1 for an apartment complex. Note that the building 1 may be an office building, and the ventilation device 3 may be provided in one section of the office building.

≪First embodiment≫
As shown in FIG. 1, the interior of the dwelling unit 2 is formed by the outer wall 7 of the building 1, the partition wall 8, the ceiling, and the floor. The outer wall 7 is provided with a plurality of openings that penetrate between the outdoors and the indoors. The dwelling unit 2 is provided with an entrance door 13 and a window 14 so as to close an opening provided in an outer wall 7. In the dwelling unit 2, a partition wall 16 is provided to partition the interior of the room so as to provide a plurality of rooms and a corridor 15. In this embodiment, the dwelling unit 2 includes a living room 17, a first room 18, a second room 19, a bedroom 20, a kitchen 21, a washroom 22, a bathroom 23, a toilet 24, a plurality of closets 25, and the like. The first room 18, the second room 19, and the living room 17 are in contact with the outer wall 7 of the building 1. A door 26 is provided in each room so as to close an opening provided in the partition wall 16. The door 26 may be arranged such that there is a gap between the lower part of the door 26 and the floor, and the lower part of the door 26 may be provided with an undercut, for example. The entrance 27 of the dwelling unit 2 is provided with a storage section that defines a storage space 51 for storing clothes 53 (FIG. 2) or shoes. In this embodiment, two shoe storage sections 28 for storing shoes and a clothes storage section 29 for storing clothes 53 are provided.

The dwelling unit 2 is provided with a ventilation system 3. The ventilation device 3 has an air supply passage 30 for taking outdoor air indoors, and an exhaust passage 31 for discharging indoor air outdoors. Further, the ventilation device 3 includes a ventilation fan 32 provided in at least one of the air supply passage 30 and the exhaust passage 31. In this embodiment, a ventilation fan 32 is provided in the exhaust passage 31. The air supply passage 30 is provided in the outer wall 7 of the building 1 so as to communicate the outdoors and the indoors. Both ends of the air supply passage 30 are open to the outdoors and indoors, and the length of the air supply passage 30 is formed to be approximately equal to the thickness of the outer wall 7. In this embodiment, three air supply passages 30 are provided so as to open into three rooms: a first room 18 , a second room 19 , and a living room 17 . A shutter or a filter that can be opened and closed may be provided at the indoor opening of the air supply passage 30 to close the opening.

The exhaust passage 31 has at least one exhaust port 37 (exhaust intake port) provided indoors and an exhaust port 38 (exhaust discharge port) provided outdoors. The ventilation fan 32 creates a flow of air from the exhaust port 37 toward the exhaust port 38 in order to discharge the indoor air taken in from the exhaust port 37 from the exhaust port 38 . The exhaust passage 31 may be a conduit formed by a duct or the like, and includes at least one upstream conduit section 40 provided between at least one exhaust port 37 and the ventilation fan 32, and between the ventilation fan 32 and the exhaust. It has a downstream pipe section 41 provided between the outlet 38 and the outlet 38 . The ventilation fan 32 is arranged under the ceiling of the bathroom 23, and the upstream pipe section 40 and the downstream pipe section 41 are arranged under the ceiling of each room and the hallway 15. The opening at the downstream end of the downstream pipe section 41 serves as a discharge port 38 . The downstream end of the downstream pipe section 41 is disposed on the outer wall 7 of the building 1 and is open to the outdoors.

The exhaust port 37 is arranged indoors so as to supply indoor air to the upstream pipe section 40 while the ventilation fan 32 is in operation. In this embodiment, four exhaust ports 37 are arranged in four indoor spaces: the bathroom 23, the washroom 22, the toilet 24, and the entrance 27. The exhaust port 37 of the bathroom 23, the exhaust port 37 of the washroom 22, and the exhaust port 37 of the toilet 24 are arranged on the ceiling of each room. The exhaust port 37 of the entrance 27 is arranged at the lower part of the clothes storage section 29 (see FIG. 2). In other embodiments, the exhaust port 37 of the vestibule 27 may be located at the bottom of the shoe compartment 28. Each exhaust port 37 may be provided with a shutter or a filter that can be opened and closed. The exhaust passage 31 has four upstream pipe sections 40 extending from each of the four exhaust ports 37 toward the ventilation fan 32. The upstream pipe sections 40 are connected to each other via a switching valve 42. A common pipe section 43 formed of a duct or the like is provided between the switching valve 42 and the ventilation fan 32 as a part of the upstream pipe section 40 .

The switching valve 42 has an upstream pipe section 40 communicating with the entrance 27 , an upstream pipe section 40 communicating with the bathroom 23 , an upstream pipe section 40 communicating with the washroom 22 , and an upstream pipe section 40 communicating with the toilet 24 . Either one of the side pipe parts 40 and the side pipe part 40 is connected to the ventilation fan 32 via a common pipe part 43. The switching valve 42 is configured to include, for example, a sensor 44 or a switch, a solenoid valve that drives a damper of the switching valve 42, and a control device 45 that controls the solenoid valve based on a signal from the sensor 44 or the switch. good. In this embodiment, the sensor 44 is placed in the bathroom 23, the washroom 22, and the toilet 24. Sensor 44 may be a humidity sensor or a human sensor. The control device 45 controls the passage switching state (damper position) of the switching valve 42 based on the detection result of the sensor 44 . For example, when a human sensor is used as the sensor 44, the sensor 44 reacts by sensing a person in the bathroom 23, washroom 22, or toilet 24, and outputs a detection signal to the control device 45. The control device 45 receives the detection signal from the sensor 44 and controls the upstream pipe section 40 communicating with the bathroom 23, the upstream pipe section 40 communicating with the washroom 22, and the upstream pipe section 40 communicating with the toilet 24. The position of the damper is controlled so that it is connected to the ventilation fan 32 via the common pipe section 43. As a result, when the bathroom 23, the washroom 22, or the toilet 24 is used, the switching valve 42 switches between the upstream pipe section 40 communicating with the bathroom 23, the upstream pipe section 40 communicating with the washroom 22, and the switching valve 42. An upstream pipe section 40 communicating with the toilet 24 and a common pipe section 43 communicating with the ventilation fan 32 are connected. When the washroom is not in use, the switching valve 42 connects the upstream pipe section 40 communicating with the entrance 27 and the common pipe section 43. Note that a switch may be used instead of the sensor 44, and the switch may be provided in conjunction with a light switch provided in the bathroom 23, washroom 22, or toilet 24. Further, the switch may be provided, for example, in the kitchen 21 so that the user can remotely control it.

As shown in FIG. 2, the clothes storage section 29 includes a first side wall 46 extending from the entrance 27 toward the first room 18, a second side wall 47 disposed opposite to the first side wall 46, and a second side wall 47 disposed opposite to the first side wall 46. It has a third side wall 48 that connects the ends of the first side wall 46 and the second side wall 47 on the first room 18 side. The clothes storage section 29 also includes an upper wall 49 that connects the upper ends of the first side wall 46 , the second side wall 47 , and the third side wall 48 , and a lower end portion of the first side wall 46 , the second side wall 47 , and the third side wall 48 . It has a connecting lower wall 50. A portion of the clothes storage section 29 facing the third side wall 48 is an opening, and a door (not shown) is provided to close this opening. As a result, a storage space 51 is formed in the clothes storage section 29 by the first side wall 46, the second side wall 47, the third side wall 48, the upper wall 49, the lower wall 50, and each inner surface of the door. A hanger pipe 54 for hanging clothes 53 is provided in the clothes storage section 29 so as to span between the first side wall 46 and the second side wall 47. The first side wall 46, the second side wall 47, and the third side wall 48 may be the partition wall 16, or may be provided separately from the partition wall 16.

The first side wall 46, the second side wall 47, the third side wall 48, the upper wall 49, and the lower wall 50 have spaces inside. The contact portion between the lower wall 50 and the first side wall 46 and the contact portion between the upper wall 49 and the first side wall 46 are open, and their interiors communicate with each other. An exhaust port 37 formed by a plurality of holes for communicating between the entrance 27 and the inside of the lower wall 50 is provided on the surface of the lower wall 50 on the entrance 27 side. A first ventilation port 55 is provided on the inner surface of the upper wall 49 and is formed by a plurality of holes for communicating the inside of the upper wall 49 and the storage space 51 . Thereby, the clothes storage section 29 has a first exhaust passage section 56 extending from the exhaust port 37 provided in the lower wall 50 to the first ventilation port 55 provided in the upper wall 49. A filter 57 is arranged inside the upper wall 49. Filter 57 may be a dust removal and sterilization filter. A second vent 58 is provided on the inner surface of the second side wall 47 and is formed by a plurality of holes for communicating the storage space 51 and the inside of the second side wall 47 . A third vent 59 is provided on the outer surface of the second side wall 47, and the upstream pipe section 40 is connected to the third vent 59. Thereby, the storage space 51 also forms part of the exhaust passage 31.

The flow of air in the ventilation device 3 configured as above will be explained with reference to FIGS. 3 and 2. As shown in FIG. 3, the switching valve 42 connects the upstream pipe section 40 communicating with the entrance 27 and the common pipe section 43. First, the ventilation fan 32 provided in the exhaust passage 31 exhausts indoor air to the outdoors via the exhaust port 38. Specifically, indoor air is exhausted outdoors from an exhaust port 37 provided in the toilet 24 via an upstream pipe section 40, a ventilation fan 32, a downstream pipe section 41, and an exhaust port 38. .

Furthermore, indoor air is also exhausted to the outdoors via an exhaust port 37 provided at the lower part of the clothes storage section 29. Specifically, as shown in FIG. 2, indoor air flows from the exhaust port 37 to the upper part of the clothes storage section 29 via the first exhaust passage section 56 and the filter 57. Indoor air passes through the filter 57 and flows into the storage space 51. Thereafter, the indoor air flows from top to bottom in the storage space 51 while mixing with the air in the storage space 51. Indoor air and air in the storage space 51 are supplied to a second vent 58 provided at the bottom of the storage space 51, inside the second side wall 47, a third vent 59, upstream pipe section 40, ventilation fan 32, and downstream. The air is exhausted outdoors via the side pipe section 41 and the discharge port 38.

Since indoor air is exhausted outdoors by the ventilation fan 32, the indoor air pressure becomes lower than the outdoor air pressure. To compensate for this pressure difference, outdoor air is brought into the room. That is, outdoor air is taken into each room via the air supply passage 30 provided in each room. By opening the window 14, outdoor air may be taken into the room through the opening of the window 14. Air taken into each room flows toward each exhaust port 37. At this time, even if the door 26 of each room is closed, air flows through the gap provided between the lower part of the door 26 and the floor. Ventilation is performed by these air supply and exhaust air.

The effects of the ventilation device 3 configured as above will be explained below. In the ventilation system 3, an exhaust port 37 is provided at least at the entrance 27. Therefore, indoor air flows toward the exhaust port 37 of the entrance 27. Therefore, while indoor ventilation is being performed, the entrance 27 is also being ventilated. Ventilation of the entrance 27 is performed by suppressing air from the entrance 27 from flowing into the room. Therefore, bacteria and dust taken into the entrance 27 or bacteria and dust staying in the hallway 15 are discharged outdoors without passing through the room.

The exhaust passage 31 has an upstream pipe section 40 provided between the exhaust port 37 and the ventilation fan 32, and a downstream pipe section 41 provided between the ventilation fan 32 and the exhaust port 38. . Since air flows quickly in the pipe section of the exhaust passage 31, bacteria and dust are less likely to accumulate therein. Therefore, bacteria and dust are prevented from staying in the exhaust passage 31, and bacteria and dust staying in the exhaust passage 31 are prevented from being taken into the room through the gap. Further, by adjusting the lengths of the upstream pipe section 40 and the downstream pipe section 41, the ventilation fan 32 can be placed at a desired position, which increases the degree of freedom in the arrangement of the ventilation fan 32.

The exhaust passage 31 has three upstream pipe sections 40 that extend from each of the three exhaust ports 37 toward the ventilation fan 32 , and communicates with the upstream pipe section 40 that communicates with the washroom 22 and the entrance 27 . The upstream pipe section 40 is connected to the upstream pipe section 40 via a switching valve 42. Thereby, the switching valve 42 can switch between ventilation of the entrance 27 and ventilation of the washroom/dressing room 22. Since the number of general-purpose ventilation fans 32 that can be connected is limited, each of the above-mentioned upstream pipe sections 40 cannot be connected to the general-purpose ventilation fans 32. Therefore, since the plurality of upstream pipe sections 40 are integrated by the switching valve 42, there is no need to prepare a special ventilation fan 32 in addition to the general-purpose ventilation fan 32. Therefore, an increase in the cost of the ventilation device 3 can be suppressed. Further, ventilation of the entrance 27, ventilation of the bathroom 23, ventilation of the washroom 22, or ventilation of the toilet 24 can be switched.

The switching valve 42 includes a sensor 44 corresponding to the washroom 22 and a control device 45 that controls the passage switching state (specifically, the position of the damper) of the switching valve 42 based on the detection result of the sensor 44. It is configured as follows. Thereby, ventilation of the entrance 27 and ventilation of the washroom/dressing room 22 are switched depending on the usage status of the washroom/dressing room 22. In other words, there is no need for a switching operation and the ventilator 3 can be used conveniently, which improves the marketability of the ventilation device 3.

Due to gravity, dust tends to accumulate at the bottom of a room rather than at the top. As shown in FIG. 2, in this embodiment, the exhaust port 37 of the entrance 27 is provided at the lower wall 50 of the clothes storage section 29, that is, at the lower part of the wall of the entrance 27. Thereby, ventilation is performed from the lower part of the entrance 27, where dust tends to accumulate more easily than the upper part of the entrance 27. Therefore, compared to the case where the exhaust port 37 is provided at the upper part of the wall of the entrance 27, the amount of dust that accumulates in the entrance 27 is reduced.

As described above, the exhaust port 37 of the entrance 27 is provided at the lower part of the clothes storage section 29, and the storage space 51 of the clothes storage section 29 forms a part of the exhaust passage 31. Therefore, in addition to ventilation of the entrance 27, bacteria and dust attached to the clothes 53 or shoes can be removed.

The clothes storage section 29 has a first exhaust passage section 56 extending from the exhaust port 37 to the upper part of the storage space 51, and is configured so that air flows through the storage space 51 from top to bottom. As a result, bacteria and dust attached to the clothes 53 stored in the clothes storage section 29 are dropped below the storage space 51 by the air flow.

The clothes storage section 29 has a filter 57 provided in the first exhaust passage section 56 . As a result, bacteria and dust staying in the entrance 27 are absorbed by the filter 57. Therefore, bacteria and dust can be prevented from flowing outdoors through the storage space 51, exhaust passage 31, and ventilation fan 32 and staying indoors. Alternatively, a sterilization device may be disposed in the first exhaust passage section 56. In this case, the germs staying in the entrance 27 are removed by the sterilization device.

≪Second embodiment≫
Next, a second embodiment of the present invention will be described with reference to FIG. Note that the same or similar elements as in the first embodiment are given the same reference numerals, and redundant explanations will be omitted.

As shown in FIG. 4, the ventilation device 3 according to the second embodiment differs from the ventilation device 3 according to the first embodiment in the configuration of the ventilation fan 32 and the exhaust port 37 arranged in the bathroom 23. That is, the exhaust port 37 arranged in the bathroom 23 is formed integrally with the ventilation fan 32. As a result, the upstream pipe section 40 communicating with the entrance 27, the upstream pipe section 40 communicating with the washroom 22, and the upstream pipe section 40 communicating with the toilet 24 are connected via the switching valve 42. ing. The switching valve 42 switches one of the upstream pipe section 40 communicating with the entrance 27, the upstream pipe section 40 communicating with the washroom 22, and the upstream pipe section 40 communicating with the toilet 24. It is connected to the ventilation fan 32 via the common pipe section 43.

In this way, the switching valve 42 has the passage switching state (damper position) controlled by the control device 45, and the upstream pipe section 40 communicating with the entrance 27 and the upstream pipe section communicating with the washroom 22. 40 and the upstream pipe section 40 that communicates with the toilet 24 is connected to a common pipe section 43 that connects to the ventilation fan 32. Ventilation of the bathroom 23 is preferably linked to switching between ventilation of the entrance 27, ventilation of the washroom 22, and ventilation of the toilet 24. Even if the ventilation device 3 is configured in this way, the same effects as in the first embodiment can be achieved.

This concludes the description of the specific embodiments, but the present invention is not limited to the above embodiments and modifications, and can be implemented in a wide range of modifications. For example, in the above embodiment, the third type ventilation method in which the ventilation fan 32 is provided on the exhaust passage 31 side is adopted as the ventilation method, but the first type ventilation method or the second type ventilation method is adopted. Good too. Although most of the ventilation fan 32 and exhaust passage 31 of the present invention are provided in the ceiling, they may be provided in the underfloor space. Further, the exhaust port 37 of the entrance 27 may be provided in the shoe storage section 28 or may be provided in the partition wall 16 that defines the entrance 27. Furthermore, the exhaust port 37 does not need to be placed in the bathroom 23, the washroom 22, and the toilet 24, and may be placed in the living room 17, for example. Further, the specific configuration, arrangement, quantity, material, etc. of each member or portion can be changed as appropriate without departing from the spirit of the present invention. Furthermore, all of the constituent elements shown in the above embodiments are not essential and can be selected as appropriate.

1: Building 3: Ventilation system 22: Washroom 23: Bathroom 24: Toilet 27: Entrance 28: Shoe storage (storage)
29: Clothes storage department (storage department)
30: Air supply passage 31: Exhaust passage 32: Ventilation fan 37: Exhaust port 38: Discharge port 40: Upstream pipe section 41: Downstream pipe section 42: Switching valve 44: Sensor 45: Control device 51: Storage space 53: Clothes 56: First exhaust passage section 57: Filter

Claims (9)

A ventilation system installed in a building,
an air supply passageway for bringing outdoor air indoors;
an exhaust passage for discharging the indoor air to the outdoors;
a ventilation fan provided in at least one of the air supply passage and the exhaust passage;
The exhaust passage has at least one exhaust port provided indoors to take in the indoor air , and an exhaust port provided outdoors,
the exhaust port is provided at a lower part of at least an entrance wall of the building ;
The entrance is provided with a storage part that defines a storage space for storing clothes, the storage space forms a part of the exhaust passage, and the air that has passed through the storage part is discharged outdoors from the exhaust port. Ventilation equipment. The ventilation device according to claim 1, further comprising a sterilization device provided between the exhaust port and the storage space in the exhaust passage. The ventilation device according to claim 1, further comprising a filter provided between the exhaust port and the storage space in the exhaust passage. The exhaust passage includes a first vent provided in an upper part of the storage part to send air taken in from the exhaust port into the storage space, and a first vent provided in the upper part of the storage part to exhaust air in the storage space to the outside of the storage space. 4. The storage space according to claim 1, further comprising a second vent provided at a lower part of the storage space so that air flows from top to bottom in the storage space. Ventilation equipment. The ventilation device according to claim 4, wherein the storage section has a hanger pipe provided in the storage space for hanging the clothes. the ventilation fan is provided in the exhaust passage;
The exhaust passage has an upstream pipe section provided between the exhaust port and the ventilation fan, and a downstream pipe section provided between the ventilation fan and the exhaust port. The ventilation device according to any one of items 1 to 3 . The ventilation fan is provided in the exhaust passage, and the exhaust port is further provided in a bathroom, laundry room, or toilet of the building,
The exhaust passage includes a plurality of upstream pipe sections provided between each of the exhaust ports and the ventilation fan, and a downstream pipe section provided between the ventilation fan and the exhaust port. , has
The ventilation device according to any one of claims 1 to 3 , wherein the plurality of upstream pipe sections are connected to each other via a switching valve. a sensor or switch corresponding to the bathroom, the washroom, or the toilet where the exhaust port is provided;
The ventilation device according to claim 7 , further comprising a control device that controls the switching valve based on the detection result of the sensor or the state of the switch. The ventilation device according to claim 4 , wherein the storage section has a first exhaust passage section extending from the exhaust port to the first ventilation port.

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