Residential ventilation system and its interior door

Abstract

To provide a house ventilation system capable of ventilating each living room.SOLUTION: A house ventilation system 1 comprises: a ventilation fan 32 that is provided in an interior door 3 arranged in an opening 310b or an opening 210b of a wall 310 separating rooms 200 of a house 2, and suctions air in a living room, which is one room 200 separated by the wall 210; and a vent hole 33 that is provided in the interior door 3, and exhausts the suctioned air to another room 300 separated by the wall 210. It is preferable to further comprise a control unit 4 that controls the ventilation fan 32.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a residential ventilation system and an interior door thereof. [Background technology]

[0002] Conventionally, doors that separate the inside and outside of a building and ventilate the room while preventing water from entering have been proposed (see, for example, Patent Document 1). Meanwhile, in residential rooms, Type 3 ventilation is widely used, in which exhaust fans installed in non-habitable rooms such as toilets and bathrooms are used to take in fresh air through air intakes in living rooms such as the living room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-311366 Summary of the Invention [Problem to be solved by the invention]

[0004] The ventilation volume for a home is calculated on a per-house basis. However, because homes have invisible gaps, for example, with Type 3 ventilation, a lot of fresh air enters through gaps near the exhaust fan, causing the intake and exhaust of air only in the vicinity of the exhaust fan, resulting in insufficient ventilation in rooms far from the exhaust fan, such as the living room. In particular, living rooms are often used by many people, so there was concern that the amount of ventilation per person would be insufficient. [Means for solving the problem]

[0005] The present disclosure relates to a residential ventilation system that includes a ventilation fan that is installed in an opening in a wall that separates rooms in a house or in an interior door that is placed in the opening, and that draws in air from a living room that is one of the rooms separated by the wall, and an air vent that is installed in the interior door and exhausts the intake air to the other room separated by the wall. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a floor plan of a house in a residential ventilation system according to a first embodiment. [Figure 2A] FIG. 1 is a front view of an interior door according to a first embodiment, seen from the first surface side. [Figure 2B] FIG. 2 is a rear view of the interior door of the first embodiment as seen from the second surface side. [Figure 3] FIG. 3 is a schematic diagram illustrating the ventilation volume in the first embodiment. [Figure 4A] FIG. 10 is a flow chart for manually switching the operation of the ventilation fan. [Figure 4B] FIG. 10 is a flow chart for automatically switching the operation of the ventilation fan. [Figure 5] FIG. 10 is a front view of an interior door according to a modified example of the first embodiment, seen from the first surface side. [Figure 6] FIG. 10 is a schematic diagram of a residential ventilation system according to a second embodiment. [Figure 7] FIG. 10 is a front view of the interior door of the third embodiment, seen from the first surface side. [Figure 8] FIG. 11 is a front view of an interior door according to a modified example of the third embodiment, seen from the first surface side. [Figure 9A] FIG. 10 is a perspective view of the first surface side of the interior door of the fourth embodiment. [Figure 9B] FIG. 10 is a perspective view of the interior door of the fourth embodiment, with the panel material on the first surface side thereof omitted. [Figure 9C] FIG. 10 is a perspective view of the second surface side of the interior door of the fourth embodiment. [Figure 9D] FIG. 10 is a front view of the first surface side of the interior door of the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. As shown in FIG. 1, a residential ventilation system 1 is installed in a house 2 having rooms 200 therein. The rooms 200 include, for example, living rooms 201, kitchens 202, and Japanese-style rooms 203, as well as non-living rooms such as toilets 204, washrooms 205, bathrooms 206, hallways 207, and entrance halls 208. The rooms 200 are separated by walls 210. The house 2 is designed to provide Type 3 ventilation, i.e., ventilation at a rate of 0.5 or more times per hour as stipulated by the Building Standards Act. Specifically, ventilation is achieved by exhausting air from the house 2 through an exhaust fan 21 installed in a position facing the outdoors, such as the ceiling or wall 210 of the toilet 204, and supplying air through air intakes 210c and other locations installed in the living rooms.

[0008] The residential ventilation system 1 includes an exhaust fan 21, an interior door 3 separating rooms 200 of the house 2, a ventilation fan 32 and a vent 33 provided on the interior door 3, various sensors for detecting conditions inside the rooms 200 of the house 2, a control unit 4 for controlling ventilation based on the detection results of these sensors, and an air volume adjustment unit 36. Specifically, the sensors are a pressure sensor 22 and an in-room sensor 23. The sensors will be described later.

[0009] As shown in FIGS. 1 and 3 , the interior doors 3 are arranged in openings 210b in the wall 210 separating the living room 201 and the hallway 207, the opening 210b in the wall 210 separating the hallway 207 and the toilet 204, the opening 201b in the wall 210 separating the Japanese-style room 203 and the hallway 207, and the opening 210b in the wall 210 separating the kitchen 202 and the hallway 207. Since these interior doors 3 have the same configuration, the following describes the interior door 3 installed in the living room 201. As shown in FIGS. 2A and 2B , the interior door 3 has a first surface 3a and a second surface 3b, with the first surface 3a facing the intake side and the second surface 3b facing the exhaust side. The interior door 3 has a frame 31, a door main body 30, a display unit 34, a power supply unit 35, and is provided with a ventilation fan 32 and an air vent 33. The interior door 3 is configured so that air can pass through the inside of the door body 30.

[0010] The frame body 31 is arranged on the periphery of an opening 210b formed in the wall 210. The frame body 31 has a vertical frame 311, an upper frame 312, and a latch receiving portion 313. The vertical frames 311 extend vertically and are arranged in pairs on the left and right of the opening 210b. The upper frame 312 connects the upper ends of the pair of vertical frames 311 in the left-right direction. The latch receiving portion 313 is arranged on the visible surface of the vertical frame 311 on the door end side. The latch receiving portion 313 has a receiving recess 313a that fits into the visible surface of the vertical frame 311, and a visible flat portion 313b that extends around the receiving recess 313a.

[0011] The door body 30 is a thin, approximately rectangular parallelepiped member placed within the frame 31. The door body 30 is formed by a face material forming the first surface 3a and a face material forming the second surface 3b, which are arranged with a gap between them and connected at the periphery of each face material with screws or the like. The door body 30 has an air intake 301, a doorknob 302, a latch claw 303, and a hinge 304.

[0012] The air intake 301 is an opening arranged in the panel forming the first surface 3a. The air intake 301 is formed only in the first surface 3a and does not penetrate to the second surface 3b. The air intake 301 is an opening in which a ventilation fan 32 (described later) is arranged to draw air from the first surface 3a side of the interior door 3.

[0013] The door knob 302 is attached to the door edge side at approximately the center in the longitudinal direction of the first surface 3a of the door body 30. The door knob 302 is a handle that opens and closes the door body 30 by rotating it.

[0014] The latch claw 303 is a claw-like protrusion that moves in and out from the side of the door body 30 as the doorknob 302 is turned. The latch claw 303 engages with a latch receiver 313 arranged on a vertical frame 311 on the door edge side.

[0015] The hinge portion 304 is a hinge that connects the door body 30 and the vertical frame 311 on the door trailing edge side. The hinge portion 304 is configured by two slats, one of which is fixed to the vertical frame 311 on the door trailing edge side and the other of which is fixed to the door body 30, and the two slats are rotatably connected by a shaft portion.

[0016] Ventilation fan 32 is provided at the top of first surface 3a of door body 30, and is positioned so that it can draw air in through air intake port 301 on first surface 3a. Ventilation fan 32 is a sirocco fan, and multiple ventilation fans 32 are arranged at intervals in the width direction of door body 30. Ventilation fan 32 rotates electrically to draw in air from living room 201 of one room 200 separated by wall 210.

[0017] As shown in FIG. 2B , the ventilation opening 33 is an opening provided in the lower part of the panel forming the second surface 3b of the door body 30. The ventilation opening 33 is an opening through which the ventilation fan 32 draws air from one room 200, i.e., the living room 201, and exhausts it to the other room 200 separated by the wall 210, i.e., the hallway 207. The ventilation opening 33 is formed to extend in the width direction at the lower part of the second surface 3b. The ventilation opening 33 is formed only on the second surface 3b side, and not on the first surface 3a. As a result, air drawn in on the first surface 3a side passes through the interior of the door body 30 and is sent from the ventilation opening 33 on the second surface 3b to the hallway 207. The air drawn in by the ventilation fan 32 passes through the interior of the door body 30 and is exhausted from the ventilation opening 33, thereby ventilating the inside and outside of the space in which the interior door 3 is installed.

[0018] The interior door 3 in the first embodiment is suitable for use mainly in winter and other times when the outside temperature is low. When the heater is on in the living room 201 where the interior door 3 is installed, warm air is drawn in through the upper ventilation fan 32 and exhausted through the lower vent 33.

[0019] The display unit 34 is a section capable of displaying information on the detection results detected by various sensors (described later), as well as other information such as the time, temperature, and humidity. The display unit 34 is disposed on the first surface 3a and is configured, for example, with a liquid crystal screen. The display unit 34 is connected to the room sensor 23 (described later) via wireless communication or the like so as to be able to communicate with the room sensor 23.

[0020] The power supply unit 35 supplies power to drive the ventilation fan 32 when the door main body 30 is closed. As shown in FIGS. 2A and 2B , the power supply unit 35 is disposed on the latch claw 303 and the latch receiver 313, where the door main body 30 and the frame 31 engage. The power supply unit 35 has conductive wires that are in contact with the latch claw 303 and the latch receiver 313 when the interior door 3 is closed, and are capable of conducting electricity. The power supply unit 35 is configured to conduct electricity when the latch claw 303 engages with the latch receiver 313, and supply power to the ventilation fan 32. The power supply unit 35 may be configured to supply power wirelessly by disposing a power transmitting coil and a power receiving coil on the latch claw 303 and the latch receiver 313, respectively, instead of conductive wires that conduct electricity by contacting each other.

[0021] Air volume adjustment unit 36 ​​adjusts the amount of air exhausted from ventilation opening 33. The adjustment of the air volume is achieved by changing the rotation speed of motor 320 of ventilation fan 32 using control unit 4, which will be described later. Air volume adjustment unit 36 ​​may also be achieved by changing the number of ventilation fans 32 to be driven. In these cases, air volume adjustment unit 36 ​​has a control circuit such as an inverter provided in control unit 4 and motor 320 of ventilation fan 32, and control unit 4 controls air volume adjustment unit 36.

[0022] The control unit 4 is a computer electrically connected to sensors arranged inside the house 2 and each part of the interior door 3. The control unit 4 controls the ventilation fan 32. The location where the control unit 4 is arranged is not particularly limited. For example, an electronic board is arranged in a housing such as a remote controller, and the housing is detachably arranged on the wall surface of the house 2, etc.

[0023] The pressure sensors 22 are provided in each of the living and non-living rooms of the house 2, with multiple sensors arranged at predetermined positions. The pressure sensors 22 detect the pressure in the living and non-living rooms. As shown in FIG. 1, the pressure sensors 22 are arranged in the living room 201, the hallway 207, and the toilet 204. The type of pressure sensor 22 is not particularly limited and may be a semiconductor type, a strain gauge type, a metal thin film type, or the like. The pressure sensor 22 may be a pressure sensor 22 using a silicon semiconductor.

[0024] The room sensor 23 is a human presence sensor 231 that is placed in a room such as the living room 201 and detects the number of people present in the room. There are no particular limitations on the type of the human presence sensor 231. For example, it may be an infrared sensor that detects human heat.

[0025] FIG. 3 shows an example of the volume and flow path of air circulating within the house 2 in this embodiment. In the house 2, the pressure value detected by the pressure sensor 22 is sent to the control unit 4. The control unit 4 adjusts the ventilation volume according to the pressure at the position where the pressure sensor 22 is located. The ventilation volume is the volume of air flowing into or out of a room in one hour divided by the area of ​​the room. For example, if the volume of air exhausted from the exhaust fan 21 of the toilet 204 is 25 m 3 Here, the volume of air exhausted from the interior door 3 separating the toilet 204 from the hallway 207 is 35 m 3 / h, and air is blown from the hallway 207 side to the toilet 204 side. Based on the result of the pressure sensor 22, the control unit 4 controls the intake volume of the ventilation fan 32 so that the volume of air taken in by the interior door 3 is greater than the volume of air exhausted from the exhaust fan 21. In addition, the control unit 4 controls the volume of air flowing from the living room 201 side to the hallway 207 side to be 45 m 3 / h, and air is exhausted from the living room 201 side to the hallway 207 side. If the hallway 207 is controlled to have a positive pressure compared to the toilet 204, cold outside air is less likely to enter the hallway 207 through unseen gaps in the house 2, such as the hallway 207. Air from the living room 201 side is blown into the hallway 207 at a specified air volume from the ventilation fan 32 and vent 33 of the interior door 3. Since the living room 201 is adjusted to a comfortable temperature by the air conditioning equipment, the temperature-adjusted air flows from the living room 201 to the hallway 207 and from the hallway 207 to the toilet 204, thereby reducing the temperature difference between the rooms.

[0026] The ventilation fan 32 of the interior door 3 may be operated constantly, or may be operated when required by the user. As shown in Fig. 4A, in the case of manual operation, a manual operation start button is pressed on a remote controller (not shown) or the like to start manual operation (S1). The control unit 4 receives a signal to start operation and starts the motor 320 of the ventilation fan 32 to rotate (S2). At this time, the initial volume of air exhausted from the interior door 3 is, for example, 40 m 3 / h. This initial airflow rate is set to a value that satisfies at least the "ventilation rate of 0.5 times / h for the entire house 2" set for Type 3 ventilation. Thereafter, the user sets the desired value for the airflow rate to be exhausted from the interior door 3 (S3). When the user sets the airflow rate and sends an instruction to the control unit 4, the rotation speed of the ventilation fan 32 is adjusted so that the set value is reached, and the airflow rate to be exhausted from the interior door 3 is adjusted (S4). If the rotation of the ventilation fan 32 needs to be stopped, the stop button is pressed to end manual operation (S5). This stops the motor of the ventilation fan 32 (S6).

[0027] As shown in FIG. 4B, in the case of automatic operation, the system is in continuous operation (S11). At this time, as in the case of manual operation, the initial ventilation volume through the interior door 3 is set to a value that satisfies at least the "ventilation volume of 0.5 times / h for the entire house 2" set for Type 3 ventilation, and the motor 320 of the ventilation fan 32 is operating (S12). In the case of automatic operation, the room sensor 23, specifically the human presence sensor 231, located in the living room 201 detects the number of people present in the living room 201 (S13). The human presence sensor 231 performs detection once every 15 minutes. The detected number of people is sent to the control unit 4.

[0028] When the control unit 4 receives a signal indicating the number of people detected by the human presence sensor 231, the volume of air exhausted from the interior door 3 is adjusted according to the detection result of the human presence sensor 231 (S14). In the residential ventilation system 1, the ventilation volume of the interior door 3 is set in advance based on the detection result of the human presence sensor 231. For example, if the living room 201 has an area of ​​20 tatami mats and the detected number of people in the room is 0 to 1, the volume of air exhausted from the interior door 3 is set to 40 m, the same as the initial volume. 3 / h. If two people are detected, the 3 / h, 90m for 3 people 3 / h, 120m for 4 people 3 / h, the more people present in the room, the more the airflow rate increases. The number of people detected by the human presence sensor 231 is displayed on the display unit .

[0029] Based on the detection result of the human presence sensor 231, the control unit 4 sends a signal to the air volume adjustment unit 36 ​​to increase or decrease the rotation speed of the ventilation fan 32 and control the air volume of the ventilation fan 32. In this way, the air volume 6 is adjusted.

[0030] If automatic operation is to continue, the human presence sensor 231 continues to detect the presence of the human being. If the user wishes to stop automatic operation, the user presses the stop button. When the control unit 4 detects the user's stop operation (S15), operation is stopped (S16), and the motor of the ventilation fan 32 is stopped (S17).

[0031] This embodiment provides the following advantages. The residential ventilation system 1 includes a ventilation fan that is installed in an opening 210b in a wall 210 separating rooms 200 of a residential house 2 or in an interior door 3 that is located in the opening 210b, and that draws in air from a living space that is one of the rooms 200 separated by the wall 210, and an air vent 33 that is installed in the interior door 3 and exhausts the intake air to the other room 200 separated by the wall 210. This allows reliable ventilation of the living space in which the interior door 3 is located, regardless of gaps in the residential house 2, even in a residential house 2 that is using type 3 ventilation. Because ventilation can be performed individually for each living space, appropriate ventilation is possible even in rooms 200 that are located far from the exhaust fan 21 or in a location where air exchange is difficult using type 3 ventilation. Furthermore, if the interior door 3 is placed on the wall 210 separating a living room from a non-living room, for example, the living room 201 from the hallway 207, the temperature difference between the living room 201 and the hallway 207 can be reduced by discharging the air from the living room 201 into the hallway 207. Similarly, the temperature difference between a non-living room, such as the toilet 204 or the washroom 205, and a living room, such as the living room 201 or the kitchen 202, can be reduced, which makes it possible to prevent so-called heat shock and to live comfortably in a space with little temperature difference.

[0032] According to this embodiment, the system further includes a control unit 4 that controls the ventilation fan 32. This makes it possible to design and control the ventilation volume according to the air volume, air pressure difference, etc., inside the house 2.

[0033] According to this embodiment, the house 2 is further configured to include an exhaust fan 21 that is installed at a position facing the outdoors and exhausts air from inside the house 2. The intake volume of the ventilation fan 32 is set to be greater than the exhaust volume of the exhaust fan 21. This makes the pressure on the side where air is exhausted from the interior door 3 more positive than the side where air is exhausted to the outside of the house 2 by the exhaust fan 21, making it difficult for outside air to enter the house 2. Therefore, the temperature inside the house 2 is less susceptible to the influence of the outside air temperature.

[0034] According to this embodiment, the system further includes pressure sensors 22 provided in the occupied and unoccupied rooms, respectively, to detect the pressure inside the occupied and unoccupied rooms. Based on the detection results of the pressure sensors 22, the control unit 4 controls the intake volume of the ventilation fan 32 so that the intake volume of the ventilation fan 32 is greater than the exhaust volume of the exhaust fan 21. This makes it possible to reliably control the pressure on the side where air is exhausted from the interior door 3 to be positive compared to the side where air is exhausted to the outside of the house 2 by the exhaust fan 21, based on the value of the pressure sensor 22. This makes the temperature inside the house 2 less susceptible to the influence of the outside air temperature. In particular, outside air is less likely to enter unoccupied rooms, such as the hallway 207, which does not have air conditioning equipment, and the exhaust of air from the interior door 3 makes it easier to regulate the temperature in the unoccupied rooms.

[0035] According to this embodiment, the residential ventilation system 1 is configured to include an in-room sensor 23 disposed in the living room. The control unit 4 controls the airflow rate of the ventilation fan 32 based on the detection results of the in-room sensor 23. The home 2 is typically designed to have an air change rate of 0.5 or more per hour, and the ventilation fan 32 is operated to have an air change rate of at least 0.5 or more per hour. By adjusting the airflow rate of the ventilation fan 32 based on the detection results of the in-room sensor 23, ventilation can be performed through the interior door 3 as needed, when necessary, for example, when there are many people in the room. This makes it possible to limit the increase in electricity costs for operating the ventilation fan 32 to only the amount necessary.

[0036] According to this embodiment, the interior door 3 is configured to include a display unit 34 that displays the detection results of the interior sensor 23. This makes it possible to encourage a user who sees the display on the display unit 34 to ventilate the room.

[0037] The present disclosure is not limited to the above-described embodiments, and modifications and improvements within the scope of achieving the object of the present disclosure are included in the present disclosure. In the first embodiment, the ventilation fan 32 is provided at the top of the door body 30, and the vent 33 is provided at the bottom of the door body 30. However, the locations of the ventilation fan 32 and the vent 33 are not limited. For example, as a modification of the first embodiment shown in FIG. 5, the ventilation fan 32A may be provided at the bottom of the first surface 3a of the door body 30, and the vent 33 may be provided at the top of the second surface 3b of the door body 30. In this configuration, when air conditioning is used in the living room 201 to which the interior door 3 is installed, air is drawn in through the lower ventilation fan 32 and exhausted through the upper vent 33. This ensures efficient heating and cooling effects when air conditioning is used in the living room 201, etc. Indoor doors 3 with different locations of the ventilation fan 32 and the vent 33 may be used not only during heating and cooling, but also in warm and cold regions.

[0038] In the first embodiment, the house 2 is ventilated using type 3 ventilation. However, as in a second embodiment shown in Fig. 6, the house ventilation system 1B may be installed in a house 2A that performs type 1 ventilation. For example, the house 2A may be a house 2A that has a ductless heat exchange ventilator 5 that does not have a duct.

[0039] At least one pair of ductless heat exchange ventilators 5 are arranged diagonally across the house 2B, and switch the airflow direction between intake and exhaust at preset intervals. The preset interval is, for example, 70 seconds. The ductless heat exchange ventilator 5 is installed on the exterior wall of the house 2B so as to penetrate from the inside to the outside, and has a cylindrical shape. The ductless heat exchange ventilator 5 has a heat storage unit 51, a heat exchange fan 52, a filter 53, and an outside air intake hood 54.

[0040] The outdoor air intake hood 54 is installed on the outdoor side to take in outdoor air and release indoor air to the outdoors. The heat storage unit 51 is located midway along the air flow path of the cylindrical ductless heat exchange ventilator 5 and retains the heat contained in the air flowing in from the outdoors or the air flowing out from the indoors to the outdoors. The heat exchange fan 52 is rotatably installed on the indoor side and draws in and exhausts the air passing through the heat storage unit 51. The heat exchange fan 52 changes the direction of the air passing through the heat storage unit 51 by changing its rotation speed and direction. The filter 53 is installed on the indoor side of the heat exchange fan 52 and captures dust and other particles contained in the air being drawn in and exhausted. For example, if the air conditioner is turned on indoors during the summer when hot outdoor air flows in, the cold heat is stored in the heat storage unit 51, and when hot air passes from the outdoors to the indoors, the air is cooled and drawn into the indoors. Furthermore, when the heater is on indoors during winter when cold outdoor air flows in, the hot heat is stored in the heat storage section 51, and when cold air passes from outdoors into the room, the air is warmed and drawn into the room. By having the air flow through the heat storage section 51, the thermal efficiency of adjusting the temperature of the air flowing into the room is improved.

[0041] In a house 2A in which a ductless heat exchange ventilator 5 is installed, the ventilation fan 32B of the interior door 3B is a reversible flow fan. The ventilation fan 32B has an air direction adjustment unit 37 that can change the air direction. The air direction adjustment unit 37 is configured by providing an air direction plate and an air direction plate motor that drives the air direction plate in the air vent 33, and by changing the air direction plate motor using the control unit 4. The control unit 4 controls the air direction adjustment unit 37 in conjunction with the air direction of the heat exchange fan 52, changing the air direction of the ventilation fan 32B. The linkage may be achieved by programming the rotation of the ventilation fan 32B to be linked in advance with a predetermined ductless heat exchange ventilator 5. The switching of the air direction of the ventilation fan 32B is controlled by the control unit 4.

[0042] According to the second embodiment, the ventilation fan 32B and the heat exchange fan 52 are linked so that their airflow directions are directed in the same direction, thereby enabling ventilation without impeding the efficiency of heat exchange in the house 2B.

[0043] FIG. 7 shows an interior door 3C of a third embodiment, in which the positions of the ventilation fan 32C and the vent 33C are changeable. As shown in FIG. 7, the interior door 3C has an upper ventilation fan 321 located at the upper part of the first surface 3a of the door body 30C, a lower ventilation fan 322 located at the lower part, an upper ventilation port 331 located at the upper part of the second surface 3b of the door body 30C, and a lower ventilation port 332 located at the lower part. The upper ventilation fan 321 is located at the air intake port 301 located at the upper part of the door body 30C, and the lower ventilation fan 322 is located at the air intake port 301 located at the lower part of the door body 30C. For ease of explanation, FIG. 7 shows the door body 30C with the front panel constituting the first surface 3a removed. In the third embodiment, the ventilation port 33C is closed when not in use and has a retractable cover 335 that can be opened when in use. The lid portion 335 is configured to be electrically opened and closed. On one side of the interior door 3C in the width direction, the upper ventilation fan 321 is arranged at the top and the lower ventilation port 332 is arranged at the bottom. On the other side of the door body 30C in the width direction, the lower ventilation fan 322 is arranged at the bottom and the upper ventilation port 331 is arranged at the top.

[0044] The ventilation fan 32C has a ventilation fan switching mechanism 323. The ventilation fan switching mechanism 323 is a switch that switches between operation of the upper ventilation fan 321 and operation of the lower ventilation fan 322 in response to a command from the control unit 4 so as to operate either the upper ventilation fan 321 or the lower ventilation fan 322.

[0045] The ventilation port 33C has a ventilation port switching mechanism 324. The ventilation port switching mechanism 324 is a switch that switches between the upper ventilation port 331 and the lower ventilation port 332 in response to a command from the control unit 4 so as to open one of the upper ventilation port 331 and the lower ventilation port 332 and close the other.

[0046] According to the third embodiment, the positions of the ventilation fan 32C and the vent 33C to be operated can be selected and changed so that during heating, air is taken in through the upper ventilation fan 321 and exhausted through the lower vent 332, and during cooling, air is taken in through the lower ventilation fan 322 and exhausted through the upper vent 331. Switching between the ventilation fan 32C and the vent 33C may be performed manually using a remote controller or a switch provided on the interior door 3C, or may be set to be automatically switched depending on predetermined conditions such as temperature and humidity.

[0047] FIG. 8 shows a modified example of the third embodiment. In this modified example, the ventilation opening 33D includes an upper ventilation opening 331D provided at the upper portion of the second surface 3b of the door main body 30D and a lower ventilation opening 332D provided at the lower portion. Both the upper ventilation opening 331D and the lower ventilation opening 332D are open. The ventilation fan 32D is disposed between the upper ventilation opening 331D and the lower ventilation opening 332D, approximately at the center in the longitudinal and width directions of the interior door 3D. The ventilation fan 32D is a reversible flow fan that can switch between drawing air from above or below. When the ventilation fan 32D draws air through the ventilation opening 33D located above, the upper ventilation opening 331D serves as the air intake 301. When ventilation fan 32D takes in air through ventilation port 33D arranged below, lower ventilation port 332D serves as intake port 301. Ventilation fan switching mechanism 323D in the modified example of the third embodiment may be part of an electronic circuit in control unit 4 that changes the rotation direction of ventilation fan 32D in response to a command from control unit 4. Alternatively, as a mechanical mechanism, wind direction plates that can change the wind direction may be arranged between ventilation fan 32D and upper ventilation port 331D and lower ventilation port 332D.

[0048] In this modification, the rotation direction of ventilation fan 32D is changed to intake air from above or below, so that during heating, air is taken in through upper vent 331D, which serves as an upper intake port, and exhausted through lower vent 332D at the bottom. During cooling, air is taken in through lower vent 332D and exhausted through upper vent 331D.

[0049] According to the third embodiment and its modified examples, the positions of the ventilation fan 32C and the vents 33C and 33D can be changed, so that a single interior door 3C, 3D can draw in and exhaust indoor air at a position with good thermal efficiency depending on whether it is cooling or heating.

[0050] In the first embodiment, the room sensor 23 is described using the human presence sensor 231 as an example. However, the sensor for detecting the status of the room is not limited to this. For example, the room sensor 23 may be a CO2 sensor 232 that detects the concentration of CO2. In this case, the control unit 4 may adjust the air volume so that the CO2 concentration is 1000 ppm or less. This makes it possible to adjust the ventilation volume when the CO2 concentration in the room is high. The detection result of the CO2 concentration is displayed on the display unit 34. This makes it possible to prompt people in the living room 201 to ventilate the room when the CO2 concentration is high. The room sensor 23 may also be a formaldehyde or virus detection sensor that detects specific viruses, etc.

[0051] The air volume adjustment unit 36 ​​is not limited to adjusting the rotation speed as long as it can adjust the air volume of the ventilation fan 32. For example, the air volume adjustment unit 36 ​​may adjust the exhaust volume from the vent 33 by partially closing the opening of the vent 33. For example, the air volume adjustment unit 36 ​​may have an air volume adjustment valve that narrows or opens the outlet of the air supplied at a constant volume. The air volume adjustment valve is provided in the exhaust passage between the downstream side of the ventilation fan 32 and the vent 33, and the exhaust volume can be adjusted by adjusting the opening of the valve with the control unit 4. Another air volume adjustment valve may be a movable slat provided at the vent 33 that can partially close the vent 33. The exhaust volume from the vent 33 can be controlled by adjusting the opening of the slat. The values ​​for air volume described in the above specification are merely examples and may be adjusted as appropriate depending on the area of ​​the living room, the structure and materials of the house, etc.

[0052] In the second embodiment, an example has been described in which the airflow direction adjustment unit 37 is controlled in conjunction with the ductless heat exchange ventilator 5 of the house 2A that performs type 1 ventilation. However, the airflow direction adjustment unit 37 may also be used in a house ventilation system that does not have a ductless heat exchange ventilator 5. For example, in a house that performs type 3 ventilation, if the surrounding environment, such as the land on which the house is located, or the layout of the house makes it easy for air to flow in a certain direction, the airflow direction adjustment unit 37 may be provided in the ventilation fan to adjust the airflow direction as needed.

[0053] 9A to 9D show a door body 30E of an interior door 3E of the fourth embodiment. As shown in FIG. 9A, the interior door 3E has a plurality of vents 33E arranged therein, and the arrangements are different between the first surface 3a and the second surface 3b. As shown in FIG. 9A, first vents 333a to 333h are arranged on the first surface 3a side. As shown in FIG. 9B, second vents 334a and 334b ​​are arranged vertically spaced apart on the second surface 3b side. The ventilation fan 32E, the air intake 301, and other components are the same as those of the first embodiment.

[0054] As shown in FIG. 9C, the door body 30E of the fourth embodiment has a pair of outer vertical bars 314, an inner vertical bar 315, a first horizontal bar 316a, a second horizontal bar 316b, a third horizontal bar 316c, a fourth horizontal bar 316d, a fifth horizontal bar 316e, auxiliary bars 317a-317i, 318a-318c, and hollow portions 310, 330.

[0055] The outer vertical bars 314 and the inner vertical bars 315 are arranged such that vertically extending square members are connected to the outer and inner peripheries of the door main body 30E.

[0056] The first horizontal beam 316a extends substantially horizontally to connect the upper ends of the outer vertical beam 314 and the inner vertical beam 315. The third horizontal beam 316c, the fourth horizontal beam 316d, and the fifth horizontal beam 316e extend substantially horizontally to connect the lower ends of the outer vertical beam 314 and the inner vertical beam 315. The third horizontal beam 316c, the fourth horizontal beam 316d, and the fifth horizontal beam 316e are connected by overlapping in the vertical direction. The second horizontal beam 316b extends substantially horizontally between the first horizontal beam 316a and the third horizontal beam 316c, near the center of the door body 30E in the vertical direction.

[0057] The auxiliary beams 317a to 317i and 318a to 318c are short rectangular timbers arranged at intervals above and below on the inner peripheral surface of the inner vertical beam 315. Two of each of the auxiliary beams 317a to 317i are attached to the inner vertical beam 315, and two of each of the auxiliary beams 318a and 318b are also attached to the inner vertical beam 315. A second horizontal beam 316b is installed between the auxiliary beam 317e and the auxiliary beam 318b.

[0058] Hollow portions 310 and 330 are spaces surrounded by outer vertical beam 314, inner vertical beam 315, first horizontal beam 316a to fifth horizontal beam 316e, and auxiliary beams 317a to 317i and 318a to 318c. Hollow portion 310 is located above second horizontal beam 316b, and hollow portion 330 is located below second horizontal beam 316b.

[0059] The vertical dimension of first ventilation opening 333a matches the vertical dimension between auxiliary bars 317a and 317b. Similarly, the vertical dimension of first ventilation opening 333b matches the vertical dimension between auxiliary bars 317b and 317c, the vertical dimension of first ventilation opening 333c matches the vertical dimension between auxiliary bars 317c and 317d, the vertical dimension of first ventilation opening 333d matches the vertical dimension between 317d and 317e, the vertical dimension of first ventilation opening 333e matches the vertical dimension between auxiliary bars 317e and 317f, the vertical dimension of first ventilation opening 333f matches the vertical dimension between auxiliary bars 317f and 317g, the vertical dimension of first ventilation opening 333g matches the vertical dimension between auxiliary bars 317g and 317h, and the vertical dimension of first ventilation opening 333h matches the vertical dimension between auxiliary bars 317h and 317i.

[0060] The upper edge of first ventilation opening 333a contacts the lower edge of auxiliary bar 317a. Similarly, the upper edge of first ventilation opening 333b contacts the lower edge of auxiliary bar 317b, the upper edge of first ventilation opening 333c contacts the lower edge of auxiliary bar 317c, the upper edge of first ventilation opening 333d contacts the lower edge of auxiliary bar 317d, the upper edge of first ventilation opening 333e contacts the lower edge of auxiliary bar 317e, the upper edge of first ventilation opening 333f contacts the lower edge of auxiliary bar 317f, the upper edge of first ventilation opening 333g contacts the lower edge of auxiliary bar 317g, and the upper edge of first ventilation opening 333h contacts the lower edge of auxiliary bar 317h.

[0061] The left-right width of each of the first ventilation openings 333a-333h is narrower than the combined width of the two square members of the auxiliary bar 317a. The vertically extending side edges of the first ventilation openings 333a-333h are in contact with the center edge of the inner vertical bar 315 in the door body 30.

[0062] The vertical dimensions of the second vents 334a and 334b ​​match the vertical dimensions between the auxiliary bars 318a and 318b and between the auxiliary bars 318b and 318c, respectively. The upper edge of the second vent 334a contacts the lower edge of the auxiliary bar 318a. The upper edge of the second vent 334b ​​contacts the lower edge of the auxiliary bar 318b. The lower edge of the second vent 334a contacts the upper edge of the auxiliary bar 318b. The lower edge of the second vent 334b ​​contacts the upper edge of the auxiliary bar 318c. The left-right width of the second vents 334a and 334b ​​is narrower than the combined width of two square timbers for each of the auxiliary bars 318a to 318c. The vertically extending side edges of the second vents 334a and 334b ​​contact the center edge of the inner vertical bar 315 in the door body 30.

[0063] In the interior door 3E configured as described above, indoor air is drawn in by the rotation of the ventilation fan 32E. The interior and exterior sides of the interior door 3 are connected to each other via the panel members constituting the first and second surfaces 3a and 3b, the hollows 310 and 330, the first vents 333a-333h, and the second vents 334a and 334b, allowing ventilation. In the fourth embodiment, the first vents 333a-333h and the second vents 334a and 334b ​​are arranged in a vertical row along the vertical frame 311 of the interior door 3, and the distance from the first vents 333a-333h to the second vents 334a and 334b ​​is short. Therefore, air resistance through the hollows 310 and 330 is small, resulting in good ventilation performance.

[0064] The first narrow section has a narrow width dimension d1 between auxiliary bars 317a and 317b, between auxiliary bars 317b and 317c, between auxiliary bars 317c and 317d, between auxiliary bars 317d and 317e, between auxiliary bars 317e and 317f, between auxiliary bars 317g and 317h, and between auxiliary bars 317h and 317i. The width dimension d1 is small in the direction intersecting the direction connecting first vent holes 333a-333h and second vent holes 334a and 334b, i.e., the vertical direction. The large width section has a wide width dimension d2 between horizontal bars 316a and 316b of hollow portion 310, and a large width section has a wide width dimension d3 between horizontal bars 316b and 316c of hollow portion 330. Therefore, sound waves entering hollow portions 310 and 330 from ventilation holes 333a to 333h are muted by the rapid expansion of cross-sectional area when they enter from the small width portion of width d1 to the large width portion of width d2 or d3.

[0065] The width dimension d4 of the second narrow portion between auxiliary bars 318a and 318b is smaller than the width dimension d2 of the large width portion of hollow portion 330. The width dimension d5 of the second narrow portion between auxiliary bars 318b and 318c is smaller than the width dimension d3 of the large width portion of hollow portion 330. Therefore, sound waves entering hollow portions 310 and 330 from ventilation openings 334a and 334b ​​are muted.

[0066] Because the upper and lower sides of the first ventilation holes 333a-333h and the second ventilation holes 334a-334b are supported by the auxiliary beams 317a-317i and 318a-318c, respectively, the strength and rigidity of the surface material constituting the first surface 3a and the second surface 3b around the first ventilation holes 333a-333h and the second ventilation holes 334a-334b are increased, thereby preventing damage to the first surface 3a and the second surface 3b and suppressing vibration.

[0067] In the above embodiment, the ventilation fan 32 is provided in the door body 30. However, the ventilation fan may be provided in the frame body 31, or in a decorative portion such as a relief formed on the door body 30, or in an opening 210b such as a transom arranged around the frame body 31.

[0068] In the first embodiment, the intake volume of the ventilation fan 32 is controlled based on the detection result of the pressure sensor 22, and the intake volume of the ventilation fan 32 is set to be greater than the ventilation volume of the exhaust fan 21. However, the residential ventilation system may be designed in advance so that the intake volume of the ventilation fan 32 is greater than the exhaust volume of the exhaust fan 21 when the opening in the wall 210 is closed, regardless of the detection result of the pressure sensor 22, etc. This makes the pressure on the side where air is blown out from the interior door 3 more positive than the side where air is exhausted by the exhaust fan 21, making it difficult for outside air to enter the house 2. This makes the temperature inside the house 2 less susceptible to the influence of the outside air temperature. In particular, outside air is less likely to enter unoccupied rooms such as the hallway 207 that are not equipped with air conditioning, and the exhaust of air from the interior door 3 makes it easier to regulate the temperature in unoccupied rooms.

[0069] In the above embodiment, the power supply unit 35 is disposed in the latch claw portion 303 and the latch receiver 313. However, the power supply unit 35 may also be disposed in the hinge portion 304 connecting the frame 31 and the door body 30. For example, a conductive wire connected to a commercial power source may be connected to the vertical frame 311 side, and a conductive wire connected to the ventilation fan 32 may be connected to the door body 30 side, and these conductive wires may be in contact with each other. Alternatively, a wireless power supply mechanism may be disposed in the hinge portion 304. The specific location of the power supply unit 35 is not limited as long as it can supply power to the ventilation fan 32. The power supply unit 35 is not limited to a conductive wire drawn from a commercial power source or the like. A power source device, such as a dry cell battery or a storage battery, may be built into the interior door 3. In this case, power is supplied to the ventilation fan 32 and the like from the battery or storage battery.

[0070] The position where the interior door 3 is placed is not limited. Multiple interior doors may be placed in one room. Conventionally, interior doors have an undercut that creates a gap between the bottom edge of the interior door and the floor for ventilation of the room. However, the interior door 3 of the present disclosure does not need to have an undercut. [Explanation of symbols]

[0071] 1 Residential ventilation system, 2 Residential, 3 Interior door, 3a First surface, 3b Second surface, 4 Control unit, 5 Ductless heat exchange ventilation device (heat exchange ventilation device), 21 Exhaust fan, 22 Pressure sensor, 23 Room interior sensor, 30 Door body, 32 Ventilation fan, 33 Vent, 35 Power supply unit, 34 Display unit, 36 Air volume adjustment unit (adjustment valve), 37 Air direction adjustment unit, 51 Heat storage unit, 52 Heat exchange fan, 200 Room, 210 Wall, 310 Hollow section, 330 Hollow section, 331 Upper vent (upper vent), 332 Lower vent (lower vent)

Claims

1. a ventilation fan provided in an interior door disposed at an opening in a wall separating rooms of a house, the ventilation fan taking in air from a living room, which is one of the rooms separated by the wall; an air vent provided in the interior door for discharging the intake air to the other room separated by the wall; a control unit that controls the ventilation fan; an exhaust fan provided at a position facing the outdoors of the house to exhaust air from inside the house; A residential ventilation system, wherein the intake volume of the ventilation fan is greater than the exhaust volume of the exhaust fan.

2. pressure sensors provided in the living room and the non-living room, respectively, for detecting pressure in the living room and the non-living room; 2. The residential ventilation system of claim 1, wherein the control unit controls the intake volume of the ventilation fan based on the detection result of the pressure sensor so that the intake volume of the ventilation fan is greater than the exhaust volume of the exhaust fan.

3. The ventilation fan has a wind direction adjustment unit that can change the wind direction, The residential ventilation system according to claim 1 or 2, wherein the control unit controls the airflow direction adjustment unit to change the airflow direction of the ventilation fan.

4. A ventilation fan that is installed in an interior door placed at an opening in a wall separating rooms in a house and that draws in air from a living room that is one of the rooms separated by the wall; an air vent provided in the interior door for discharging the intake air to the other room separated by the wall; a control unit that controls the ventilation fan; a heat exchange ventilation device having a heat storage unit and a heat exchange fan capable of switching the direction of air passing through the heat storage unit; The ventilation fan has a wind direction adjustment unit that can change the wind direction, The control unit controls the airflow direction adjusting unit in conjunction with the airflow direction of the heat exchange fan, thereby changing the airflow direction of the ventilation fan.

5. Further, an indoor sensor is provided in the indoor space, The residential ventilation system according to any one of claims 1 to 4, wherein the control unit controls the air volume of the ventilation fan based on the detection result of the indoor sensor.

6. The residential ventilation system according to claim 5 , wherein the interior door has a display unit that displays the detection result of the interior sensor.

7. The interior door has an air volume adjustment unit that can adjust the amount of exhaust air from the vent, The residential ventilation system according to any one of claims 1 to 6, wherein the control unit controls the air volume adjustment unit to control the amount of exhaust air from the vent.

8. The interior door has an air intake port provided at each of an upper part and a lower part, through which air is taken in from the ventilation fan, The vents are provided at the top and bottom of the interior door, The interior door is configured to be able to switch between taking in air from the top or bottom, When the heating is used in the room, air is taken in through the upper air intake and exhausted through the lower air vent, The residential ventilation system according to any one of claims 1 to 7, wherein, when air conditioning is used in the living room, air is drawn in through the lower air intake and exhausted through the upper air vent.

9. The residential ventilation system according to any one of claims 1 to 8, wherein the interior door has a power supply unit that supplies power to the ventilation fan.

10. The residential ventilation system of claim 9 , wherein the power supply unit includes a battery disposed in the interior door.

11. An interior door provided in the residential ventilation system according to any one of claims 1 to 10.

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