Ventilated door, building ventilation system, building ventilation method and building

Abstract

To make air in an air-conditioned room appropriately flow out to the outside of the air-conditioned room so that the outside of the air-conditioned room which is a living room provided with an air conditioner becomes an appropriate temperature.SOLUTION: A ventilation system 3 for a building 1 includes an air-conditioned room air supply passage 13 for supplying outside air to an air-conditioned room 21 which is a living room provided with an air conditioner 32 for supplying air-conditioned air whose temperature is adjusted by heating or cooling, and a ventilation system 3 for a room other than the air-conditioned room 21. Air-conditioning room door 31 includes a door body side 31b, an upper opening side 31b provided in an upper portion of the door body side 31d, a lower opening side 31b provided in a lower portion of the door body side 31f, an upper opening / closing device 31d that opens and closes the upper opening side 31e, and a lower opening / closing device 31d that opens and closes the lower opening side 31g.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a ventilated door, a ventilation system for a building, a method for ventilating a building using a ventilation system, and a building. [Background technology]

[0002] There are various technologies related to air conditioning in buildings such as apartment buildings. For example, Patent Document 1 describes a central air conditioning system that supplies conditioned air generated by heating or cooling an air conditioner to each of multiple rooms through ducts to condition the rooms. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2024-256 Summary of the Invention [Problem to be solved by the invention]

[0004] The central air conditioning system described in Patent Document 1 is inefficient because it supplies conditioned air to rooms where no occupants are present. On the other hand, there are dwelling units in which air conditioning equipment is not installed in all rooms, but in one or more rooms. Hereinafter, a room equipped with an air conditioning equipment will be referred to as an "air-conditioned room." In this dwelling unit, the air in the air-conditioned room, whose temperature has been adjusted by the air conditioning equipment, can be discharged from the door of the air-conditioned room into a hallway or the like, thereby adjusting the temperature outside the air-conditioned room in the hallway or the like.

[0005] There are times when a resident moves from an air-conditioned room to an outside room, such as when moving from a living room that is air-conditioned by an air conditioner to the bathroom. In such cases, the resident may wish to adjust the temperature outside the air-conditioned room to make it more comfortable (Case 1). In addition, there are times when the resident does not wish to adjust the temperature outside the air-conditioned room, in other words, when they do not want the air inside the air-conditioned room to flow out through the door of the air-conditioned room, so that the temperature inside the air-conditioned room can be adjusted with less energy (Case 2).

[0006] Conventionally, many buildings have doors with undercuts for ventilation. In general, the temperature inside a building is higher at the top and lower at the bottom. Therefore, in conventional buildings, the relatively cool air inside the air-conditioned room tends to flow out of the room through the undercut in the door for ventilation.

[0007] When the air-conditioned room is being heated, if the resident wishes to adjust the temperature outside the room (to warm the air) (Case 1), it is desirable for the relatively warm air from the upper part of the air-conditioned room to flow out of the room. In contrast, if the relatively cool air inside the air-conditioned room flows out of the room through the undercut in the door, it cannot be said that the air inside the air-conditioned room is flowing out of the room appropriately. On the other hand, if the resident does not wish to adjust the temperature outside the room (does not want the air to be warmed) (Case 2), the relatively cool air inside the air-conditioned room flows out of the room through the undercut in the door, so it can be said that the air inside the air-conditioned room is flowing out of the room appropriately.

[0008] Furthermore, when the air-conditioned room is cooling, if the resident wishes to adjust the temperature outside the air-conditioned room (to cool the air) (Case 1), the relatively cool air inside the air-conditioned room will flow out of the room through the undercut in the door, so it can be said that the air inside the air-conditioned room is flowing out appropriately. On the other hand, if the resident does not wish to adjust the temperature outside the air-conditioned room (does not want the air to be cooled) (Case 2), it is desirable for the relatively warm air at the top of the air-conditioned room to flow out of the room, but in conventional buildings, the relatively cool air inside the air-conditioned room will flow out of the room through the undercut in the door, so it cannot be said that the air inside the air-conditioned room is flowing out appropriately.

[0009] In this way, whether the air inside the air-conditioned room flows out of the air-conditioned room appropriately depends not only on whether the room is heating or cooling, but also on whether the air outside the room is being heated or cooled (what the appropriate temperature outside the air-conditioned room should be). In Case 1, the appropriate temperature outside the air-conditioned room is a temperature relatively close to the temperature of the air-conditioned room, i.e., a temperature relatively far from the outside air temperature. On the other hand, in Case 2, the appropriate temperature outside the air-conditioned room is a temperature relatively far from the temperature of the air-conditioned room, i.e., a temperature relatively close to the outside air temperature. In other words, during heating, in Case 1, the appropriate temperature outside the air-conditioned room is a high temperature close to the temperature of the air-conditioned room heated by the air conditioner (a temperature close to the set temperature of the air conditioner), and in Case 2, the appropriate temperature outside the air-conditioned room is a low temperature far from the temperature of the air-conditioned room (a temperature far from the set temperature of the air conditioner). Also, during cooling, in case 1, the appropriate temperature outside the air-conditioned room is a low temperature close to the temperature of the air-conditioned room cooled by the air conditioning equipment (a temperature close to the set temperature of the air conditioning equipment), and in case 2, the appropriate temperature outside the air-conditioned room is a high temperature far from the temperature of the air-conditioned room (a temperature far from the set temperature of the air conditioning equipment).

[0010] As explained above, doors with undercuts may not be able to properly allow air from the air-conditioned room to flow outside the room so that the temperature outside the room is at an appropriate level.

[0011] In view of the above background, the present invention aims to provide a vent door, a building ventilation system, a building ventilation method, and a building that can appropriately discharge air from an air-conditioned room to the outside of the air-conditioned room, which is a living room equipped with air conditioning equipment, so that the temperature outside the room is appropriate. [Means for solving the problem]

[0012] In order to solve the above problems, the present invention provides a ventilation door (31) having a door body (31b), an upper opening (31d) provided at the top of the door body, a lower opening (31f) provided at the bottom of the door body, an upper opening / closing device (31e) that opens and closes the upper opening, and a lower opening / closing device (31g) that opens and closes the lower opening.

[0013] According to this aspect, the vent door can open the upper opening and close the lower opening, allowing relatively high-temperature air to flow in and out of the room where the vent door is installed through the upper opening. Also, by closing the upper opening and opening the lower opening, relatively low-temperature air to flow in and out of the room where the vent door is installed through the lower opening. In this way, the vent door can allow both relatively high-temperature air to flow in and out of the room where the vent door is installed, and relatively low-temperature air to flow in and out of the room where the vent door is installed. Therefore, the vent door can appropriately allow air to flow in and out of the room where the vent door is installed so that the temperature inside and outside the room where the vent door is installed is appropriate.

[0014] Another aspect of the present invention is a ventilation system (3) for a building (1), comprising: an air-conditioning room intake passage (13) for supplying outside air to an air-conditioning room (21), which is a living room equipped with an air-conditioning device (32) for supplying conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage (36) connecting an exhaust room (25, 27), which is a room other than the air-conditioning room and has an exhaust intake port (40), with the outdoors; a blower (37) provided in the exhaust passage; and an air-conditioning room door (31) provided at the entrance / exit of the air-conditioning room, wherein the air-conditioning room door is a ventilation door (31) having a door body (31b), an upper opening (31d) provided at the top of the door body, a lower opening (31f) provided at the bottom of the door body, an upper opening / closing device (31e) for opening and closing the upper opening, and a lower opening / closing device (31g) for opening and closing the lower opening.

[0015] According to this aspect, the air in the air-conditioned room can be appropriately discharged to the outside of the air-conditioned room so that the temperature outside the air-conditioned room becomes appropriate.

[0016] In the above aspect, the exhaust chamber door (31) provided at the entrance / exit of the exhaust chamber may be the ventilation door (31).

[0017] According to this aspect, air can be appropriately introduced into the exhaust chamber through the exhaust chamber door so that the temperatures inside and outside the exhaust chamber are appropriate.

[0018] In the above aspect, the device may further include a control device (33) that controls the upper opening / closing device and the lower opening / closing device, and the control device may be configured to switch between a first state in which the upper opening is closed by the upper opening / closing device and the lower opening is opened by the lower opening / closing device, and a second state in which the upper opening is opened by the upper opening / closing device and the lower opening is closed by the lower opening / closing device.

[0019] According to this aspect, it becomes easy to appropriately send the temperature-controlled air inside the air-conditioned room to the outside of the air-conditioned room through the air-conditioned room door.

[0020] In the above aspect, it is preferable to further include an auxiliary exhaust passage (38) that communicates with an auxiliary exhaust chamber (22A, 22B, 28) that is a room other than the air-conditioning chamber and a room other than the exhaust chamber, and an auxiliary exhaust switching valve (39) that is connected to the auxiliary exhaust passage and the blower and switches the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected to the blower.

[0021] According to this aspect, the air in the auxiliary exhaust chamber, which is connected to the blower using the auxiliary exhaust switching valve, is sent to the outdoors by the blower and discharged outdoors. Here, the air in the auxiliary exhaust chamber connected to the blower is drawn into the auxiliary exhaust passage. This causes air flowing out of the air-conditioned chamber to be drawn into the auxiliary exhaust chamber connected to the blower. As a result, the temperature-adjusted air in the air-conditioned chamber is more likely to reach the auxiliary exhaust chamber. This makes it possible to adjust the temperature in desired locations such as the hallway and the auxiliary exhaust chamber.

[0022] Another aspect of the present invention is a method for ventilating a building (1) using a ventilation system, the ventilation system (3) including an air-conditioning room supply passage (13) for supplying outside air to an air-conditioning room (21), which is a room equipped with an air-conditioning device (32) for supplying conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage (36) connecting an exhaust room (25, 27), which is a room other than the air-conditioning room and has an exhaust intake port (40), with the outdoors; a blower (37) provided in the exhaust passage; and an air-conditioning room door (31) provided at an entrance / exit of the air-conditioning room. The air-conditioning room door is a ventilation door (31) having a door body (31b), an upper opening (31d) provided at the top of the door body, a lower opening (31f) provided at the bottom of the door body, an upper opening / closing device (31e) that opens and closes the upper opening, and a lower opening / closing device (31g) that opens and closes the lower opening, and the upper opening is switched between closed and open by the upper opening / closing device, and the lower opening is switched between closed and open by the lower opening / closing device, depending on whether or not the temperature outside the air-conditioning room is to be actively adjusted.

[0023] According to this aspect, the air in the air-conditioned room can be appropriately discharged to the outside of the air-conditioned room so that the temperature outside the air-conditioned room becomes appropriate.

[0024] In the above aspect, the ventilation system has, as opening / closing modes during heating, a narrow-range heating mode that does not actively adjust the temperature outside the air-conditioned room, and a wide-range heating mode that actively adjusts the temperature outside the air-conditioned room, and when the narrow-range heating mode is selected, the upper opening is closed by the upper opening / closing device and the lower opening is opened by the lower opening / closing device, and when the wide-range heating mode is selected, the upper opening is opened by the upper opening / closing device and the lower opening is closed by the lower opening / closing device.

[0025] According to this aspect, during heating, air whose temperature has been adjusted in the air-conditioned compartment can be appropriately sent to the outside of the air-conditioned compartment through the air-conditioned compartment door.

[0026] In the above aspect, the ventilation system has, as opening / closing modes during cooling, a narrow-range cooling mode in which the temperature outside the air-conditioned room is not actively adjusted, and a wide-range cooling mode in which the temperature outside the air-conditioned room is actively adjusted, and when the narrow-range cooling mode is selected, the upper opening is opened by the upper opening / closing device and the lower opening is closed by the lower opening / closing device, and when the wide-range cooling mode is selected, the upper opening is closed by the upper opening / closing device and the lower opening is opened by the lower opening / closing device.

[0027] According to this aspect, during cooling, air whose temperature has been adjusted in the air-conditioned compartment can be appropriately sent to the outside of the air-conditioned compartment through the air-conditioned compartment door.

[0028] In the above aspect, the ventilation system may further include a control device (33) configured to control the upper opening and closing device and the lower opening and closing device.

[0029] According to this aspect, it becomes easy to appropriately send temperature-adjusted air from inside the air-conditioned room to the outside of the air-conditioned room through the air-conditioned room door so that the temperature outside the air-conditioned room becomes appropriate.

[0030] In the above aspect, the control device may be configured to switch between a first state in which the upper opening is closed by the upper opening / closing device and the lower opening is opened by the lower opening / closing device, and a second state in which the upper opening is opened by the upper opening / closing device and the lower opening is closed by the lower opening / closing device.

[0031] According to this aspect, it becomes easy to appropriately send temperature-adjusted air from inside the air-conditioned room to the outside of the air-conditioned room through the air-conditioned room door so that the temperature outside the air-conditioned room becomes appropriate.

[0032] In the above aspect, the ventilation system further includes an auxiliary exhaust passage (38) that communicates with an auxiliary exhaust chamber (22A, 22B, 28) that is a room other than the air-conditioning room and a room other than the exhaust chamber, and an auxiliary exhaust switching valve (39) that is connected to the auxiliary exhaust passage and the blower and switches the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected, and the auxiliary exhaust switching valve is used to switch the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected.

[0033] According to this aspect, the air in the auxiliary exhaust chamber, which is connected to the blower using the auxiliary exhaust switching valve, is drawn into the auxiliary exhaust passage by the blower. Then, air flowing out of the air-conditioned chamber is drawn into the auxiliary exhaust chamber, which is connected to the blower. As a result, the temperature-adjusted air in the air-conditioned chamber is more likely to reach the auxiliary exhaust chamber. This makes it possible to adjust the temperature in desired locations, such as the hallway and the auxiliary exhaust chamber.

[0034] Another aspect of the present invention is a ventilation system (3) for a building (1), comprising: an air-conditioning room intake passage (13) for supplying outside air to an air-conditioning room (21), which is a living room equipped with an air-conditioning device (32) that supplies conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage (36) connecting an exhaust chamber (25, 27), which is a room other than the air-conditioning room and has an exhaust intake port (40), with the outdoors; a blower (37) provided in the exhaust passage and sending air in the exhaust passage to the outdoors; an auxiliary exhaust passage (38) connecting an auxiliary exhaust chamber (22A, 22B, 28), which is a room other than the air-conditioning room and a room other than the exhaust chamber, with the outdoors; and an auxiliary exhaust switching valve (39) connected to the auxiliary exhaust passage and the blower, which switches the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected to the blower.

[0035] According to this aspect, the air in the auxiliary exhaust chamber, which is connected to the blower using the auxiliary exhaust switching valve, is drawn into the auxiliary exhaust passage by the blower. Then, air flowing out of the air-conditioned chamber is drawn into the auxiliary exhaust chamber, which is connected to the blower. As a result, the temperature-adjusted air in the air-conditioned chamber is more likely to reach the auxiliary exhaust chamber. This makes it possible to adjust the temperature in desired locations, such as the hallway and the auxiliary exhaust chamber.

[0036] Another aspect of the present invention is a method for ventilating a building (1) using a ventilation system, the ventilation system (3) including an air-conditioning room supply passage (13) for supplying outside air to an air-conditioning room (21) that is a room provided with an air-conditioning device (32) for supplying conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage (36) that connects an exhaust room (25, 27) that is a room other than the air-conditioning room and has an exhaust intake port (40) with the outdoors; and a ventilation system (36) that is provided in the exhaust passage and that circulates the air in the exhaust passage to the outside. a blower (37) that blows air to the outdoors, an auxiliary exhaust passage (38) that communicates with an auxiliary exhaust chamber (22A, 22B, 28) that is a room other than the air-conditioning room and other than the exhaust chamber, and an auxiliary exhaust switching valve (39) that is connected to the auxiliary exhaust passage and the blower and that switches the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected, and the ventilation method uses the auxiliary exhaust switching valve to switch the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected.

[0037] According to this aspect, the air in the auxiliary exhaust chamber, which is connected to the blower using the auxiliary exhaust switching valve, is drawn into the auxiliary exhaust passage by the blower. Then, air flowing out of the air-conditioned chamber is drawn into the auxiliary exhaust chamber, which is connected to the blower. As a result, the temperature-adjusted air in the air-conditioned chamber is more likely to reach the auxiliary exhaust chamber. This makes it possible to adjust the temperature in desired locations, such as the hallway and the auxiliary exhaust chamber.

[0038] Another aspect of the present invention is a building (1) comprising at least one living room and at least one exhaust chamber (25, 27) provided with an exhaust intake port (40) of an exhaust passage (36) communicating with the outdoors, and a ventilation door (31) is provided at the entrance and exit of the living room.

[0039] According to this aspect, the temperature-adjusted air in the room in which the ventilation door is installed can be appropriately discharged from the ventilation door to the outside of the room in which the ventilation door is installed, so that the temperature outside the room in which the ventilation door is installed is appropriate. [Effects of the Invention]

[0040] The present invention provides a vent door, a ventilation system, a ventilation method, and a building that can appropriately allow air from an air-conditioned room to flow outside the air-conditioned room, which is a room in which air conditioning equipment is installed, so that the temperature outside the room is appropriate. [Brief explanation of the drawings]

[0041] [Figure 1] FIG. 1 is a plan view showing the general configuration of a dwelling unit in a building provided with a ventilation system according to an embodiment. [Figure 2] FIG. 1 is a front view illustrating an example vent door configuration. [Figure 3] FIG. 10 is a front view showing another example of a vent door configuration; [Figure 4] Schematic cross-sectional view of the ventilation system in narrow-band heating mode [Figure 5] Schematic cross-sectional view of the ventilation system in wide-area heating mode [Figure 6] Schematic cross-sectional view of the ventilation system in narrow-area cooling mode [Figure 7] Schematic cross-sectional view of the ventilation system in wide-area cooling mode DETAILED DESCRIPTION OF THE INVENTION

[0042] Several embodiments of the present invention will be described in detail below with reference to the drawings. In the following embodiments, an example will be described in which a ventilation system 3 is installed 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 system 3 may be installed in a section of the office building.

[0043] As shown in Figure 1, the interior of the dwelling unit 2 is divided by walls 6, a ceiling 7 (see Figure 4), and a floor 8 (see Figure 4). Partition walls 9 are provided inside the interior to separate the interior. Also, a ventilation system 3 including a ventilation device 10 for ventilating the interior is provided inside the interior.

[0044] The wall 6 includes an exterior wall and a partition wall, and the exterior wall is provided with an entrance door 11, a plurality of windows 12, an air intake port 13 for taking outdoor air indoors, an exhaust outlet 14 for discharging indoor air outdoors, and a balcony 15.

[0045] The interior is equipped with a living room 21 (air-conditioned room), a first Western-style room 22A, a second Western-style room 22B, a kitchen 24, a dressing room 25, a bathroom 26, a toilet 27, a hallway 28, a closet 29, a corridor 30, and a door 31. The living room 21, the first Western-style room 22A, and the second Western-style room 22B are living rooms. The living room 21 is an air-conditioned room equipped with an air conditioner 32 that supplies conditioned air whose temperature has been adjusted by heating or cooling. The first Western-style room 22A and the second Western-style room 22B may also be equipped with an air conditioner 32. Doors 31 are provided at the entrances and exits of the living room 21 to the toilet 27. All of these doors 31 are vent doors 31.

[0046] The ventilation system 3 includes a ventilation door 31 and a ventilation device 10 .

[0047] 2, the ventilation door 31 has a door frame 31a provided in the opening of the partition wall 9 and a door main body 31b attached to the inside of the door frame 31a. The door main body 31b has a doorknob 31c, an upper opening 31d, an upper opening / closing device 31e, a lower opening 31f, a lower opening / closing device 31g, and a control device 33.

[0048] The upper opening 31d is an opening provided in the upper part of the door main body 31b. The upper opening 31d in FIG. 2 is formed by a notch (sometimes referred to as an "upper cut") provided in the upper edge of the door main body 31b. Because the upper opening 31d is formed by an upper cut, air above the door main body 31b can easily pass through the upper opening 31d. The upper opening / closing device 31e opens and closes the upper opening 31d. The upper opening / closing device 31e has an upper opening / closing plate 31h that opens and closes the upper opening 31d, and an upper actuator 31i that moves the upper opening / closing plate 31h up and down. The upper actuators 31i are provided at the left and right ends of the upper opening / closing plate 31h, respectively, and are connected to and controlled by the control device 33. When the upper actuator 31i moves the upper opening / closing plate 31h up, the upper opening 31d is closed. When the upper actuator 31i moves the upper opening / closing plate 31h down, the upper opening 31d is opened.

[0049] The lower opening 31f is an opening provided in the lower part of the door main body 31b. The lower opening 31f in FIG. 2 is formed by a notch (sometimes referred to as an "undercut") provided in the lower edge of the door main body 31b. Because the lower opening 31f is formed by an undercut, air below the door main body 31b can easily pass through the lower opening 31f. The lower opening / closing device 31g opens and closes the lower opening 31f. The lower opening / closing device 31g includes a lower opening / closing plate 31j that opens and closes the lower opening 31f, and a lower actuator 31k that moves the lower opening / closing plate 31j up and down. The lower actuators 31k are provided at the left and right ends of the lower opening / closing plate 31j, respectively, and are connected to and controlled by the control device 33. When the lower actuator 31k moves the lower opening / closing plate 31j downward, the lower opening 31f is closed. When the lower actuator 31k moves the lower opening / closing plate 31j upward, the lower opening 31f is opened.

[0050] The control device 33 controls the upper opening / closing device 31e and the lower opening / closing device 31g. The control device 33 has an opening / closing control button 33a that receives input for controlling the upper opening / closing device 31e and the lower opening / closing device 31g.

[0051] The control device 33 is connected to the upper actuator 31i of the upper opening / closing device 31e and the lower actuator 31k of the lower opening / closing device 31g. The control device 33 can open and close the upper opening 31d by causing the upper actuator 31i to move the upper opening / closing plate 31h up and down. The control device 33 can also open and close the lower opening 31f by causing the lower actuator 31k to move the lower opening / closing plate 31j up and down.

[0052] The opening / closing control buttons 33a include an upper opening button 33b, an upper closing button 33c, a lower opening button 33d, a lower closing button 33e, a first state button 33f, and a second state button 33g.

[0053] The top opening button 33b is a button that accepts an input to open the top opening 31d. When the top opening button 33b is pressed, the control device 33 uses the top actuator 31i of the top opening / closing device 31e to open the top opening 31d. The top closing button 33c is a button that accepts an input to close the top opening 31d. When the top closing button 33c is pressed, the control device 33 uses the top actuator 31i of the top opening / closing device 31e to close the top opening 31d.

[0054] The bottom opening button 33d is a button that receives an input to open the bottom opening 31f. When the bottom opening button 33d is pressed, the control device 33 opens the bottom opening 31f using the bottom actuator 31k of the bottom opening / closing device 31g. The bottom closing button 33e is a button that receives an input to close the bottom opening 31f. When the bottom closing button 33e is pressed, the control device 33 closes the bottom opening 31f using the bottom actuator 31k of the bottom opening / closing device 31g.

[0055] The first state button 33f is a button that accepts an input to set the upper opening 31d and the lower opening 31f to a first state. In the first state, the upper opening 31d is closed and the lower opening 31f is open. When the first state button 33f is pressed, the control device 33 closes the upper opening 31d using the upper actuator 31i of the upper opening / closing device 31e and opens the lower opening 31f using the lower actuator 31k of the lower opening / closing device 31g, thereby setting the device to the first state.

[0056] The second state button 33g is a button that accepts an input to put the upper opening 31d and the lower opening 31f into the second state. In the second state, the upper opening 31d is open and the lower opening 31f is closed. When the second state button 33g is pressed, the control device 33 opens the upper opening 31d using the upper actuator 31i of the upper opening / closing device 31e and closes the lower opening 31f using the lower actuator 31k of the lower opening / closing device 31g, thereby putting the device into the second state.

[0057] As shown in FIG. 3, the ventilation door 31 may have an upper opening 31d and a lower opening 31f formed as through-holes penetrating the door body 31b. The upper opening 31d and the lower opening 31f may also be formed as openable and closable louvers. The ventilation door 31 need not be provided with a control device 33. The upper opening / closing device 31e may be configured to manually open and close the upper opening 31d. The lower opening / closing device 31g may be configured to manually open and close the lower opening 31f. The upper opening / closing device 31e only needs to be able to open and close the upper opening 31d, and therefore may not be provided with an upper actuator 31i. The lower opening / closing device 31g only needs to be able to open and close the lower opening 31f, and therefore may not be provided with a lower actuator 31k.

[0058] 1, the ventilation device 10 includes an exhaust passage 36, a blower 37, an auxiliary exhaust passage 38, and an auxiliary exhaust switching valve 39. The ventilation device 10 takes in indoor air and exhausts the taken-in air outdoors.

[0059] The exhaust passage 36 connects the laundry room 25, the bathroom 26, and the toilet 27 (exhaust chamber) with the outdoors. More specifically, the exhaust passage 36 connects the exhaust inlets 40 provided in the floor, wall, or ceiling 7 of each of the laundry room 25, the bathroom 26, and the toilet 27 with the exhaust outlet 14. The laundry room 25, the bathroom 26, and the toilet 27 are rooms other than air-conditioned rooms and are exhaust chambers in which the exhaust inlets 40 are provided. The blower 37 is provided in the exhaust passage 36. The exhaust passage 36 can be divided into an exhaust intake passage 36A, which connects the exhaust inlets 40 of the exhaust chamber with the blower 37, and an exhaust discharge passage 36B, which connects the blower 37 with the exhaust discharge outlet 14. The blower 37 sends air from the exhaust intake passage 36A to the exhaust discharge passage 36B. As a result, the air in the exhaust chamber is taken into the exhaust intake passage 36A through the exhaust intake ports 40 of each of the washroom / dressing room 25, bathroom 26, and toilet 27 (exhaust chamber) by the fan 37, sent to the exhaust discharge passage 36B, and then sent to the outdoors through the exhaust discharge port 14. In this way, the fan 37 sends the air in the exhaust passage 36 outdoors.

[0060] The auxiliary exhaust passages 38 include an auxiliary exhaust passage 38 communicating with the first Western-style room 22A, an auxiliary exhaust passage 38 communicating with the second Western-style room 22B, an auxiliary exhaust passage 38 communicating with the entrance 28, and an auxiliary exhaust passage 38 communicating with the blower 37. More specifically, there is an auxiliary exhaust passage 38 communicating with an auxiliary exhaust inlet 41 provided in the floor, wall, or ceiling 7 of the first Western-style room 22A, an auxiliary exhaust passage 38 communicating with an auxiliary exhaust inlet 41 provided in the floor, wall, or ceiling 7 of the second Western-style room 22B, an auxiliary exhaust passage 38 communicating with an auxiliary exhaust inlet 41 provided in the floor, wall, or ceiling 7 of the entrance 28, and an auxiliary exhaust passage 38 communicating with the blower 37. The first Western-style room 22A, the second Western-style room 22B, and the entrance 28 are auxiliary exhaust chambers. The auxiliary exhaust room is a room other than the air-conditioned room (living room 21) and other than the exhaust room (dressing room 25, bathroom 26, and toilet 27).

[0061] The auxiliary exhaust switching valve 39 is connected to all of the auxiliary exhaust passages 38. The auxiliary exhaust switching valve 39 switches each of the auxiliary exhaust passages 38, which communicate with the auxiliary exhaust intake port 41, between a state in which the passage is connected to the blower 37 and a state in which the passage is not connected to the blower 37. Air from the auxiliary exhaust chamber is taken in through the auxiliary exhaust intake port 41 of the auxiliary exhaust passage 38 that communicates with the blower 37, and is discharged to the outdoors through the exhaust discharge port 14 after passing through the exhaust discharge passage 36B. The auxiliary exhaust switching valve 39 can connect multiple auxiliary exhaust passages 38 to the blower 37. For example, the auxiliary exhaust switching valve 39 can connect the auxiliary exhaust passage 38 that communicates with the first Western-style room 22A and the auxiliary exhaust passage 38 that communicates with the entrance 28 to the blower 37. In this case, air taken in through the auxiliary exhaust intake port 41 of the first Western-style room 22A and the auxiliary exhaust intake port 41 of the entrance 28 passes through the exhaust passage 36 and is discharged to the outdoors through the exhaust discharge port 14. In addition, the auxiliary exhaust switching valve 39 can put all of the auxiliary exhaust passages 38 in a state where they are not in communication with the blower 37 (a state where air is not taken in through the auxiliary exhaust intake ports 41 of all of the auxiliary exhaust rooms).

[0062] An auxiliary exhaust switching valve control button (not shown) is connected to the auxiliary exhaust switching valve 39 to switch whether the auxiliary exhaust inlet 41 of the first Western-style room 22A, the auxiliary exhaust inlet 41 of the second Western-style room 22B, and the auxiliary exhaust inlet 41 of the entrance 28 are connected to the blower 37. Using the auxiliary exhaust switching valve control button, the user can cause the auxiliary exhaust switching valve 39 to switch each of the auxiliary exhaust passages 38 between connected to the blower 37 and disconnected from the blower 37. For example, the user can connect the auxiliary exhaust passage 38 connected to the first Western-style room 22A and the auxiliary exhaust passage 38 connected to the entrance 28 to the blower 37. The user can also disconnect all of the auxiliary exhaust passages 38 from the blower 37. The auxiliary exhaust switching valve control button is located on the inner wall of the living room 21. The position of the discharge switching valve control button can be changed as needed. The discharge selector valve control button may be located in the hallway 30.

[0063] When the blower 37 of the ventilation device 10 exhausts indoor air to the outdoors through the exhaust outlet 14, the indoor air pressure drops. As a result, outdoor air flows into the indoors through the intake air inlet 13. In this way, the ventilation method for the dwelling unit 2 is Type 3 ventilation, in which air is supplied by natural ventilation and air is exhausted by mechanical ventilation. The ventilation method for the dwelling unit 2 may also be Type 1 ventilation, in which air is supplied and exhausted by mechanical ventilation. Furthermore, in the case of a dwelling unit 2 using Type 1 ventilation, the ventilation device 10 may be a total heat exchange type ventilation device including a total heat exchanger.

[0064] The air supply inlet 13 provided in the living room 21 is an air-conditioning room air supply passage for supplying outside air to the air-conditioning room. The ventilation door 31 provided at the entrance to the living room 21 is an air-conditioning room door. The laundry room 25, bathroom 26, and toilet 27 are exhaust rooms. The exhaust room is a room other than the living room 21, and is provided with an exhaust inlet 40. The ventilation doors 31 provided at the entrance to the laundry room 25, bathroom 26, and toilet 27 (exhaust room) are exhaust room doors.

[0065] The operation and effects of the ventilation door 31, ventilation system 3, ventilation method using the ventilation system 3, and dwelling unit 2 configured as described above are described below. In the ventilation method, depending on whether or not the temperature outside the living room 21 is to be actively adjusted, the upper opening 31d is switched between closed and open by the upper opening / closing device 31e (see FIG. 2), and the lower opening / closing device 31g is switched between closed and open by the lower opening / closing device 31g. The user also uses the auxiliary exhaust switching valve control button (not shown) to switch the auxiliary exhaust intake 41 of the first room 22A, the second room 22B, and the entrance 28 between connected to the blower 37. This switches the auxiliary exhaust chambers (first room 22A, second room 22B, entrance 28) that are connected to the exhaust passage 36.

[0066] During heating, the air conditioner 32 supplies heated conditioned air to the living room 21. The ventilation system 3 has two opening / closing modes during heating: a narrow-range heating mode in which the temperature outside the living room 21 is not actively adjusted, and a wide-range heating mode in which the temperature outside the living room 21 is actively adjusted. During cooling, the air conditioner 32 supplies cooled conditioned air to the living room 21. The ventilation system 3 has two opening / closing modes during cooling: a narrow-range cooling mode in which the temperature outside the living room 21 is not actively adjusted, and a wide-range cooling mode in which the temperature outside the living room 21 is actively adjusted.

[0067] When the temperature outside the living room 21 is not actively adjusted (narrow range mode), the appropriate temperature outside the living room 21 is a temperature that is relatively far from the temperature of the living room 21 and close to the outside air temperature. On the other hand, when the temperature outside the living room 21 is actively adjusted (wide range mode), the appropriate temperature outside the living room 21 is a temperature that is relatively close to the temperature of the living room 21 and far from the outside air temperature.

[0068] That is, in the narrow heating mode, the appropriate temperature outside the air-conditioned room is a low temperature that is far from the temperature of the living room 21 heated by the air conditioner 32 and close to the outside temperature. In the wide heating mode, the appropriate temperature outside the air-conditioned room is a high temperature that is close to the temperature of the living room 21 heated by the air conditioner 32 (a temperature close to the temperature set in the air conditioner 32). Also, in the narrow cooling mode, the appropriate temperature outside the air-conditioned room is a high temperature that is far from the temperature of the living room 21 cooled by the air conditioner 32 and close to the outside temperature. In the wide cooling mode, the appropriate temperature outside the air-conditioned room is a low temperature that is close to the temperature of the living room 21 cooled by the air conditioner 32 (a temperature close to the temperature set in the air conditioner 32).

[0069] As shown in Fig. 4, when the user selects the heating narrow-range mode, the control device 33 (see Fig. 2) closes the upper opening 31d using the upper opening / closing device 31e and opens the lower opening 31f using the lower opening / closing device 31g, thereby entering the first state. That is, the user presses the first state button 33f (see Fig. 2) to enter the first state of the control device 33. The upper opening 31d and the lower opening 31f may also be opened and closed manually.

[0070] The blower 37 of the ventilation device 10 sends indoor air taken in through the exhaust air inlet 40 to the exhaust air outlet 14. As a result, the air in the living room 21 is sent to the hallway 30 through the lower opening 31f of the air-conditioned room door, and outside air flows into the living room 21 through the supply air inlet (air-conditioned room supply passage) 13 provided in the living room 21.

[0071] In the narrow heating mode, the temperature outside the living room 21 is not actively adjusted. In the narrow heating mode, the appropriate temperature outside the air-conditioned room is a low temperature that is far from the temperature of the living room 21 heated by the air conditioner 32 and close to the outside air temperature. In the narrow heating mode, it is desirable to suppress the outflow of heat from the living room 21 to the hallway 30 (outside the air-conditioned room) so that the temperature in the hallway 30 (outside the air-conditioned room) does not easily rise. Typically, the temperature in the upper part of the living room 21, where the upper opening 31d is provided, is higher than the temperature in the lower part of the living room 21, where the lower opening 31f is provided. In the narrow heating mode, the air sent from the lower opening 31f to the hallway 30 is relatively low-temperature air within the living room 21, so the outflow of heat from the living room 21 to the hallway 30 (outside the air-conditioned room) is suppressed. As a result, the temperature in the hallway 30 (outside the air-conditioned room) does not easily rise, and the temperature in the hallway 30 (outside the air-conditioned room) becomes close to the appropriate temperature (low temperature). Therefore, the ventilation system 3 can appropriately discharge air from the living room 21 (air-conditioned room) to the hallway 30 (outside the air-conditioned room) so that the hallway 30 (outside the air-conditioned room) has an appropriate temperature. Furthermore, in the narrow-area heating mode, the air in the living room 21 can be heated with less energy.

[0072] The air from the living room 21 sent to the hallway 30 flows into the exhaust room (the laundry room 25, the toilet 27). In the state shown in FIG. 4, the ventilation door 31 of the exhaust room (the laundry room 25, the toilet 27) has the upper opening 31d closed and the lower opening 31f open so that the hallway 30 can be heated. This allows the relatively low-temperature air in the hallway 30 to flow into the exhaust room. This prevents the temperature in the hallway 30 from dropping. Therefore, the ventilation door 31 of the exhaust room can appropriately flow air into the exhaust room so that the temperatures inside and outside the exhaust room (the laundry room 25, the toilet 27) are appropriate.

[0073] Furthermore, when the user selects the narrow-band heating mode, the upper opening 31d and the lower opening 31f of the exhaust chamber ventilation door 31 may be opened or closed. When the upper opening 31d of the exhaust chamber ventilation door 31 is open and the lower opening 31f is closed, relatively high-temperature air from the hallway 30 flows into the exhaust chamber, warming the air in the exhaust chamber. Furthermore, the upper opening 31d and the lower opening 31f of the ventilation door 31 may be opened to allow air from the hallway 30 to easily flow into the exhaust chamber (the laundry room 25 and the toilet 27).

[0074] Furthermore, the air in the auxiliary exhaust chamber, which is connected to the blower 37 using the auxiliary exhaust switching valve 39, is sent by the blower 37 into the auxiliary exhaust passage 38 and the exhaust discharge passage 36B and then discharged outdoors. Of the auxiliary exhaust intake port 41 in the first Western-style room 22A, the auxiliary exhaust intake port 41 in the second Western-style room 22B, and the auxiliary exhaust intake port 41 in the entrance 28, the air flowing out from the living room 21 is drawn to the auxiliary exhaust intake port 41 that is connected to the blower 37. Therefore, the temperature-adjusted air in the living room 21 is more likely to reach the auxiliary exhaust chamber, which is connected to the blower 37. This allows the temperature to be adjusted in desired locations (first Western-style room 22A, second Western-style room 22B, around the ventilation door 31 at the entrance to first Western-style room 22A, around the ventilation door 31 at the entrance to second Western-style room 22B, or entrance 28) such as the corridor 30 and auxiliary exhaust room (first Western-style room 22A, second Western-style room 22B, or entrance 28).

[0075] As shown in Fig. 5, when the user selects the wide-area heating mode, the control device 33 (see Fig. 2) uses the upper opening / closing device 31e to open the upper opening 31d and the lower opening 31f to close the lower opening 31f, thereby entering the second state. That is, the user presses the second state button 33g (see Fig. 2) to enter the second state into the control device 33. The upper opening 31d and the lower opening 31f may also be opened and closed manually.

[0076] In the wide-area heating mode, relatively high-temperature air present in the upper part of the living room 21 is sent from the upper opening 31d to the hallway 30 to ventilate the living room 21. This allows the hallway 30 (outside the air-conditioned room) to be appropriately heated. Therefore, the ventilation system 3 can appropriately discharge air from the living room 21 (air-conditioned room) to the hallway 30 (outside the air-conditioned room) so that the hallway 30 (outside the air-conditioned room) is at an appropriate temperature.

[0077] In the state shown in FIG. 5, the ventilation door 31 of the exhaust room (laundry room 25, toilet 27) has the upper opening 31d open and the lower opening 31f closed so that the exhaust room can be heated. This allows relatively high-temperature air from the hallway 30 to flow into the exhaust room. The air in the exhaust room is then appropriately heated. Therefore, the ventilation door 31 of the exhaust room can appropriately flow air into the exhaust room so that the temperatures inside and outside the exhaust room (laundry room 25, toilet 27) are appropriate. Note that the opening and closing of the upper opening 31d and the lower opening 31f of the ventilation door 31 of the exhaust room may be changed.

[0078] In addition, by drawing air from the living room 21 into the auxiliary exhaust intake vents 41 of the first Western-style room 22A, the second Western-style room 22B, and the entrance 28 that are connected to the blower 37, the temperature of desired locations such as the hallway 30 and the auxiliary exhaust rooms (the first Western-style room 22A, the second Western-style room 22B, and the entrance 28) can be adjusted.

[0079] As shown in Fig. 6, when the user selects the cooling narrow-band mode, the control device 33 (see Fig. 2) uses the upper opening / closing device 31e to open the upper opening 31d and the lower opening 31f to close the lower opening 31f, thereby entering the second state. That is, the user presses the second state button 33g (see Fig. 2) to enter the second state of the control device 33. The upper opening 31d and the lower opening 31f may also be opened and closed manually.

[0080] In the cooling narrow-range mode, air that is relatively hot in the upper part of the living room 21 is sent from the upper opening 31d to the hallway 30. This prevents cool air from flowing out of the living room 21 into the hallway 30 (outside the air-conditioned room). Therefore, the ventilation system 3 can appropriately discharge air from the living room 21 into the hallway 30 (outside the air-conditioned room) so that the hallway 30 (outside the air-conditioned room) has an appropriate temperature. Furthermore, the air in the living room 21 can be cooled using less energy.

[0081] In the state shown in FIG. 6, the ventilation door 31 of the exhaust room (laundry room 25, toilet 27) has the upper opening 31d open and the lower opening 31f closed so as to cool the hallway 30. This allows relatively high-temperature air in the hallway 30 to flow into the exhaust room. This prevents cool air from flowing from the hallway 30 into the exhaust room, preventing the temperature in the hallway 30 from becoming even higher. Therefore, the ventilation door 31 of the exhaust room can appropriately flow air into the exhaust room so that the temperatures inside and outside the exhaust room (laundry room 25, toilet 27) are appropriate. Note that the opening and closing of the upper opening 31d and the lower opening 31f of the ventilation door 31 of the exhaust room may be changed.

[0082] In addition, air from the living room 21 is drawn into the auxiliary exhaust intake vents 41 of the first Western-style room 22A, the second Western-style room 22B, and the entrance 28 that are connected to the blower 37, thereby making it possible to adjust the temperature of desired locations such as the hallway 30 and the auxiliary exhaust rooms (the first Western-style room 22A, the second Western-style room 22B, and the entrance 28).

[0083] As shown in Fig. 7, when a user selects the wide-area cooling mode, the control device 33 (see Fig. 2) closes the upper opening 31d using the upper opening / closing device 31e and opens the lower opening 31f using the lower opening / closing device 31g, thereby entering the first state. That is, the user presses the first state button 33f (see Fig. 2) to enter the first state into the control device 33. The upper opening 31d and the lower opening 31f may also be opened and closed manually.

[0084] In the wide-area cooling mode, air at a relatively low temperature in the lower part of the living room 21 is sent from the lower opening 31f to the hallway 30. This allows the hallway 30 (outside the air-conditioned room) to be appropriately cooled. Therefore, the ventilation system 3 can appropriately discharge the air from the living room 21 into the hallway 30 (outside the air-conditioned room) so that the hallway 30 (outside the air-conditioned room) has an appropriate temperature.

[0085] In the state shown in FIG. 7, the ventilation door 31 of the exhaust room (laundry room 25, toilet 27) has the upper opening 31d closed and the lower opening 31f open so that the exhaust room can be cooled. This allows relatively low-temperature air from the hallway 30 to flow into the exhaust room, thereby appropriately cooling the temperature of the exhaust room. Therefore, the ventilation door 31 of the exhaust room can appropriately flow air into the exhaust room so that the temperatures inside and outside the exhaust room (laundry room 25, toilet 27) are appropriate. Note that the opening and closing of the upper opening 31d and the lower opening 31f of the ventilation door 31 of the exhaust room may be changed.

[0086] In addition, by drawing air from the living room 21 into the auxiliary exhaust intake vents 41 connected to the blower 37 among the auxiliary exhaust intake vents 41 in the first Western-style room 22A, the second Western-style room 22B, and the entrance 28, it is possible to adjust the temperature in desired locations such as the hallway 30 and the auxiliary exhaust rooms (the first Western-style room 22A, the second Western-style room 22B, and the entrance 28).

[0087] The ventilation door 31 has an upper opening 31d, a lower opening 31f, an upper opening / closing device 31e, and a lower opening / closing device 31g. This allows the ventilation door 31 to open the upper opening 31d and close the lower opening 31f, allowing relatively high-temperature air to flow in and out of the room where the ventilation door 31 is installed through the upper opening 31d. Furthermore, by closing the upper opening 31d and opening the lower opening 31f, relatively low-temperature air to flow in and out of the room where the ventilation door 31 is installed through the lower opening 31f. In this way, the ventilation door 31 can allow relatively high-temperature air to flow in and out of the room where the ventilation door 31 is installed, and relatively low-temperature air to flow in and out of the room where the ventilation door 31 is installed through the upper opening 31d. Therefore, the ventilation door 31 can appropriately allow air to flow in and out of the room where the ventilation door 31 is installed so that the room and the outside of the room where the ventilation door 31 is installed maintain appropriate temperatures. Moreover, the ventilation door 31 can open the upper opening 31d and the lower opening 31f to facilitate the flow of air between the indoors where the ventilation door 31 is attached and the outdoors.

[0088] The air-conditioned room door provided at the entrance of the air-conditioned room is a ventilation door 31. This allows the air in the air-conditioned room to flow appropriately into the corridor 30 (outside the air-conditioned room) so that the temperature outside the living room 21 is appropriate.

[0089] The exhaust chamber doors provided at the entrances and exits of the washroom / dressing room 25, bathroom 26, and toilet 27 (exhaust chamber) are vent doors 31. This allows air to flow appropriately into the washroom / dressing room 25, bathroom 26, and toilet 27 (exhaust chamber) from the exhaust chamber doors so that the temperatures inside and outside the washroom / dressing room 25, bathroom 26, and toilet 27 (exhaust chamber) are appropriate.

[0090] The control device 33 switches between the first state and the second state, which makes it easy to appropriately send the temperature-adjusted air in the living room 21 from the air-conditioning room door (ventilation door) 31 to the hallway 30 (outside the air-conditioning room).

[0091] The ventilation system 3 includes an auxiliary exhaust passage 38 that communicates with the auxiliary exhaust chamber (the first Western-style room 22A, the second Western-style room 22B, and the entrance 28), and an auxiliary exhaust switching valve 39 that switches between a connected state and a disconnected state with the blower 37. The air in the auxiliary exhaust chamber that is connected to the blower 37 using the auxiliary exhaust switching valve 39 is sent by the blower 37 into the auxiliary exhaust passage 38 and the exhaust discharge passage 36B and is then discharged outdoors. Here, the air in the auxiliary exhaust chamber that is connected to the blower 37 is drawn into the auxiliary exhaust inlet 41 of the auxiliary exhaust passage 38. This draws air that has flowed out of the living room 21 into the auxiliary exhaust chamber that is connected to the blower 37. As a result, the temperature-adjusted air in the living room 21 is more likely to reach the auxiliary exhaust chamber. This allows the temperature to be adjusted in desired locations (first Western-style room 22A, second Western-style room 22B, around the ventilation door 31 at the entrance to first Western-style room 22A, around the ventilation door 31 at the entrance to second Western-style room 22B, or entrance 28) such as the corridor 30 and auxiliary exhaust room (first Western-style room 22A, second Western-style room 22B, or entrance 28).

[0092] In the ventilation method, depending on whether or not the temperature outside the living room 21 is to be actively adjusted, the upper opening 31d is switched between closed and open by the upper opening / closing device 31e (see FIG. 2), and the lower opening 31f is switched between closed and open by the lower opening / closing device 31g. This allows the air in the living room 21 to be appropriately discharged outside the living room 21 so that the temperature outside the living room 21 is appropriate.

[0093] The opening / closing modes during heating are a narrow-area heating mode and a wide-area heating mode, and depending on the opening / closing mode, the upper opening 31d is switched between closed and open, and the lower opening 31f is switched between closed and open by the lower opening / closing device 31g. This allows air whose temperature has been adjusted in the air-conditioned room to be appropriately sent from the air-conditioned room door (ventilation door) 31 to the corridor 30 (outside the air-conditioned room) during heating.

[0094] The opening / closing modes during cooling are a narrow-area cooling mode and a wide-area cooling mode, and depending on the opening / closing mode, the upper opening 31d is switched between closed and open, and the lower opening 31f is switched between closed and open by the lower opening / closing device 31g. This allows air whose temperature has been adjusted in the air-conditioned room to be appropriately sent from the air-conditioned room door (ventilation door) 31 to the corridor 30 (outside the air-conditioned room) during cooling.

[0095] The ventilation system 3 includes a control device 33. This makes it easy to appropriately send temperature-adjusted air from the living room 21 from the air-conditioning room door (ventilation door) 31 to the hallway 30 (outside the air-conditioning room) so that the temperature outside the living room 21 is appropriate.

[0096] The control device 33 is configured to switch between a first state and a second state, which makes it easy to appropriately send temperature-adjusted air from within the living room 21 through the air-conditioning room door (ventilation door) 31 to the hallway 30 (outside the air-conditioning room) so that the temperature outside the living room 21 is appropriate.

[0097] The dwelling unit 2 is equipped with ventilation doors 31 at the entrances and exits of the living rooms (living room 21, first Western-style room 22A, second Western-style room 22B). This allows air to flow in and out appropriately between the living room and the exhaust room so that the temperatures inside and outside the living rooms (living room 21, first Western-style room 22A, second Western-style room 22B) are kept appropriate.

[0098] The present invention is not limited to the above-described embodiment. The specific configuration, arrangement, quantity, and materials of each component and part may be modified as appropriate without departing from the spirit and scope of the present invention. Furthermore, not all of the components shown in the above-described embodiment are required and may be selected as appropriate. In the dwelling unit 2, the living room 21 is an air-conditioned room, but the first Western-style room 22A and the second Western-style room 22B may also be air-conditioned by installing air-conditioning equipment 32. Furthermore, there is no limit to the number of rooms and air-conditioned rooms in the dwelling unit 2. The control of the upper opening / closing device 31e and the lower opening / closing device 31g by the control device 33 may be modified as appropriate. For example, the control device 33 may be connected to the air-conditioning equipment 32, determine whether the air-conditioning is in heating or cooling mode based on the status of the air-conditioning equipment 32, and switch between the first and second modes when the time elapsed since the start of heating or cooling exceeds a predetermined time (e.g., 30 minutes). For example, the control device 33 may switch to the narrow-range heating mode when heating starts, and then switch from the narrow-range heating mode to the wide-range heating mode when a predetermined time has elapsed since heating started. Alternatively, the control device 33 may switch to the narrow-range cooling mode when cooling starts, and then switch from the narrow-range cooling mode to the wide-range cooling mode when a predetermined time has elapsed since cooling started. [Explanation of symbols]

[0099] 1: Building 2: Dwelling unit 3: Ventilation system 10: Ventilation equipment 13: Air intake port 14: Exhaust outlet 21: Living room (air-conditioned room) 22A: Western-style room No. 1 22B: Second Western-style room 25: Laundry room (exhaust room) 26: Bathroom (exhaust room) 27: Toilet (exhaust room) 28: Entrance 30: Hallway 31: Ventilated door 31b: Door body 31d: Upper opening 31e: Upper opening / closing device 31f: Bottom opening 31g: Lower opening / closing device 32: Air conditioning equipment 33: Control device 36: Exhaust passage 37: Blower 38: Auxiliary exhaust passage 39: Auxiliary exhaust switching valve 40: Exhaust intake 41: Auxiliary exhaust intake

Claims

1. A vent door, comprising: The door body and an upper opening provided at an upper portion of the door body; a lower opening provided at a lower portion of the door body; an upper opening / closing device that opens and closes the upper opening; a lower opening / closing device for opening and closing the lower opening.

2. 1. A ventilation system for a building, comprising: an air-conditioning room supply passage for supplying outside air to an air-conditioning room, which is a room equipped with an air conditioning device that supplies conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage communicating an exhaust chamber, which is a room other than the air-conditioning room and has an exhaust inlet, with the outdoors; a blower provided in the exhaust passage and configured to send air from the exhaust passage to the outdoors; an air-conditioning room door provided at an entrance / exit of the air-conditioning room, The air conditioning room door is A ventilation system is a ventilated door having a door body, an upper opening provided at the top of the door body, a lower opening provided at the bottom of the door body, an upper opening / closing device that opens and closes the upper opening, and a lower opening / closing device that opens and closes the lower opening.

3. The ventilation system according to claim 2 , wherein an exhaust chamber door provided at an entrance / exit of the exhaust chamber is the vent door.

4. Further, a control device for controlling the upper opening / closing device and the lower opening / closing device is provided. The control device a first state in which the upper opening is closed by the upper opening / closing device and the lower opening is opened by the lower opening / closing device; The ventilation system according to claim 2, wherein the ventilation system is configured to switch between a first state in which the upper opening is opened by the upper opening / closing device and a second state in which the lower opening is closed by the lower opening / closing device.

5. an auxiliary exhaust passage communicating with an auxiliary exhaust chamber that is a room other than the air conditioning chamber and the exhaust chamber; 3. The ventilation system according to claim 2, further comprising an auxiliary exhaust switching valve connected to the auxiliary exhaust passage and the blower, for switching the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected to the blower.

6. A method for ventilating a building using a ventilation system, comprising: The ventilation system comprises: an air-conditioning room supply passage for supplying outside air to an air-conditioning room, which is a room equipped with an air conditioning device that supplies conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage communicating an exhaust chamber, which is a room other than the air-conditioning room and has an exhaust inlet, with the outdoors; a blower provided in the exhaust passage and configured to send air from the exhaust passage to the outdoors; an air-conditioning room door provided at an entrance / exit of the air-conditioning room, The air conditioning room door is A vent door having a door body, an upper opening provided at an upper part of the door body, a lower opening provided at a lower part of the door body, an upper opening / closing device that opens and closes the upper opening, and a lower opening / closing device that opens and closes the lower opening, A ventilation method in which the upper opening is switched between closed and open by the upper opening / closing device, and the lower opening is switched between closed and open by the lower opening / closing device, depending on whether or not the temperature outside the air-conditioned room is to be actively adjusted.

7. The ventilation system has, as opening / closing modes during heating, a narrow-range heating mode in which the temperature outside the air-conditioned room is not actively adjusted, and a wide-range heating mode in which the temperature outside the air-conditioned room is actively adjusted, When the narrow range heating mode is selected, the upper opening is closed by the upper opening / closing device, and the lower opening is opened by the lower opening / closing device, The ventilation method according to claim 6, wherein when the wide-area heating mode is selected, the upper opening is opened by the upper opening / closing device and the lower opening is closed by the lower opening / closing device.

8. The ventilation system has, as opening / closing modes during cooling, a narrow-range cooling mode in which the temperature outside the air-conditioned room is not actively adjusted, and a wide-range cooling mode in which the temperature outside the air-conditioned room is actively adjusted, When the narrow-band cooling mode is selected, the upper opening is opened by the upper opening / closing device, and the lower opening is closed by the lower opening / closing device; The ventilation method according to claim 6, wherein when the wide-area cooling mode is selected, the upper opening is closed by the upper opening / closing device and the lower opening is opened by the lower opening / closing device.

9. The ventilation system comprises: The ventilation method according to claim 6 , further comprising a control device configured to control the upper opening and closing device and the lower opening and closing device.

10. The control device The ventilation method described in claim 9 is configured to switch between a first state in which the upper opening is closed by the upper opening / closing device and the lower opening is opened by the lower opening / closing device, and a second state in which the upper opening is opened by the upper opening / closing device and the lower opening is closed by the lower opening / closing device.

11. The ventilation system comprises: an auxiliary exhaust passage communicating with an auxiliary exhaust chamber that is a room other than the air conditioning chamber and the exhaust chamber; an auxiliary exhaust switching valve connected to the auxiliary exhaust passage and the blower, for switching the auxiliary exhaust passage between a state in which the auxiliary exhaust passage is connected to the blower and a state in which the auxiliary exhaust passage is not connected to the blower, 7. The ventilation method according to claim 6, wherein the auxiliary exhaust passage is switched between a state in which it is in communication with the blower and a state in which it is not in communication with the blower by using an auxiliary exhaust switching valve.

12. 1. A ventilation system for a building, comprising: an air-conditioning room supply passage for supplying outside air to an air-conditioning room, which is a room equipped with an air conditioning device that supplies conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage communicating an exhaust chamber, which is a room other than the air-conditioning room and has an exhaust inlet, with the outdoors; a blower provided in the exhaust passage and configured to send air from the exhaust passage to the outdoors; an auxiliary exhaust passage communicating with an auxiliary exhaust chamber that is a room other than the air conditioning chamber and the exhaust chamber; a switching valve connected to the auxiliary exhaust passage and the blower, for switching the auxiliary exhaust passage between a state in which it is connected to the blower and a state in which it is not connected to the blower.

13. A method for ventilating a building using a ventilation system, comprising: The ventilation system comprises: an air-conditioning room supply passage for supplying outside air to an air-conditioning room, which is a room equipped with an air conditioning device that supplies conditioned air whose temperature has been adjusted by heating or cooling; an exhaust passage communicating an exhaust chamber, which is a room other than the air-conditioning room and has an exhaust inlet, with the outdoors; a blower provided in the exhaust passage and configured to send air from the exhaust passage to the outdoors; an auxiliary exhaust passage communicating with an auxiliary exhaust chamber that is a room other than the air conditioning chamber and the exhaust chamber; an auxiliary exhaust switching valve connected to the auxiliary exhaust passage and the blower, for switching the auxiliary exhaust passage between a state in which the auxiliary exhaust passage is connected to the blower and a state in which the auxiliary exhaust passage is not connected to the blower, A ventilation method using an auxiliary exhaust switching valve to switch the auxiliary exhaust passage between a state in which it is in communication with the blower and a state in which it is not in communication with the blower.

14. A building comprising at least one living room and at least one exhaust room provided with an exhaust intake port of an exhaust passage communicating with the outdoors, A building, wherein the vent door according to claim 1 is provided at an entrance to the room.

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