Ventilation facility

Abstract

To provide a ventilation facility capable of appropriately ventilating a room while considering a posture of a person in the room.SOLUTION: A ventilation facility 10 includes: an air supply machine 16 that is connected to each of a plurality of air supply ports 14a, 14b, 14c provided at different heights in an object room R and that can supply air into the object room R via the air supply ports; switches 20a, 20b, 20c provided with respect to each air supply port to operate to switch opening / closing of air supply ports; a posture detector 18 that detects a posture of a room user present in the object room R; and a control device 24 that controls the switches 20a, 20b, 20c with respect to each air supply port on the basis of the detected posture of the room user.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a ventilation system, and more particularly to a ventilation system for ventilating air in a room. [Background technology]

[0002] Ventilation equipment for buildings is used to ventilate the air in rooms in a building to reduce the concentration of carbon dioxide and other gases in the room and to equalize the concentration throughout the room. For example, the ventilation equipment described in Patent Document 1 measures the carbon dioxide concentration in the room using a carbon dioxide concentration sensor and controls the ventilation air volume based on the measurement results. This makes it possible to adjust the carbon dioxide concentration in the room so that it does not exceed a predetermined value. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-157502 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when ventilating the air in a room, it is necessary to consider the presence or absence of a person (hereinafter referred to as a room occupant) in the room, as well as the state of the room occupant, particularly their posture, etc. For example, if a room occupant is sleeping in the room, it is necessary to appropriately adjust the air supply through an air intake (i.e., an air outlet) provided in the room so that the ventilation air does not hit the person's face, etc.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide ventilation equipment that can appropriately ventilate the air in a room, taking into account the posture of people in the room. [Means for solving the problem]

[0006] The above problem is solved by the ventilation equipment of the present invention by having an air supply machine that is connected to each of multiple air intakes located at different heights in the target room and is capable of supplying air into the target room through the air intakes, an open / close switch that is located at each air intake and operates to open or close the air intake, a detector that detects the posture of room occupants in the target room, and a control device that controls the open / close switch for each air intake based on the detected posture of the room occupants. The ventilation system configured as described above detects the posture of the room occupant and controls the switch provided for each air inlet based on the detected posture. This allows the air in the target room to be ventilated appropriately, taking into account the posture of the room occupant.

[0007] In addition, in the ventilation system of the present invention, the control device may control the switches for the air inlets so that the air inlets selected based on the detected posture of the room occupant are opened. According to the above configuration, air can be supplied to the target room from one of the plurality of air inlets provided at different heights that corresponds to the posture of the room occupant. As a result, the air in the target room can be ventilated more appropriately, taking into account the posture of the room occupant.

[0008] Furthermore, if the target room has a plurality of air intake port groups each consisting of a plurality of air intake ports provided at different positions in the horizontal direction, a switch may be provided for each of the plurality of air intake ports in each air intake port group. In this case, it is more preferable that the control device controls the switch provided for each of the plurality of air intake ports in the air intake port group closest to the room user based on the detected posture of the room user. According to the above configuration, the switches provided for each of the air inlets included in the air inlet group closest to the room user are controlled based on the posture of the room user, thereby making it possible to appropriately supply ventilation air into the target room in a manner suited to the posture of the room user.

[0009] Furthermore, when there are multiple room users in the target room, the detector may detect the posture of each room user. In this case, it is more preferable that the control device treats each of the multiple room users as a noted user and controls, for each noted user, a switch provided for each of a plurality of air intakes included in the group of air intakes closest to the noted user, based on the detected posture of the noted user. According to the above configuration, when there are multiple room occupants, ventilation air can be appropriately supplied into the target room in a manner suited to the posture of each of the room occupants.

[0010] The ventilation system of the present invention may further include sensors installed at a plurality of measurement points set at different heights in the target room, each sensor outputting a signal corresponding to the carbon dioxide concentration at the measurement point. More preferably, when the carbon dioxide concentration at any of the measurement points determined based on the output signal from the sensor is equal to or greater than a set value, the control device controls switches provided for each air inlet in each of the plurality of air inlet groups to open the air inlets in the air inlet groups other than the air inlet group closest to the room user. According to the above configuration, when the carbon dioxide concentration in the target room is equal to or higher than a set value, this triggers the start of the supply of ventilation air into the target room. At this time, ventilation air can be appropriately supplied into the target room taking into account the posture of the room occupant.

[0011] Furthermore, the number of air inlets included in an air inlet group and the height at which each air inlet is provided may be the same for all air inlet groups. With the above configuration, the positions (heights) from which air is supplied are consistent across the air supply port groups in the room. Therefore, even if a room occupant changes position in the room, ventilation air can be supplied into the room from the same height as long as the room occupant maintains the same posture as before the change.

[0012] In addition, in the ventilation equipment of the present invention, when the detected posture of the room occupant is a lying down posture, the control device may control the switches provided for each air intake port in the air intake port group closest to the room occupant in a lying down posture so that each of the multiple air intake ports included in the air intake port group closest to the room occupant in a lying down posture is closed. In the above case, for example, the supply of ventilation air can be controlled so that the ventilation air does not directly hit a room occupant in a lying position and disturb their sleep.

[0013] In addition, in the ventilation equipment of the present invention, when the detected posture of the room user is standing, the control device may control the switches provided for each air intake port in the air intake port group closest to the room user in a standing posture so that each of the multiple air intake ports included in the air intake port group closest to the room user in a standing posture opens. In the above case, for example, the supply of ventilation air can be controlled so as to reduce the carbon dioxide concentration rising near the room occupant who is standing.

[0014] In addition, in the ventilation equipment of the present invention, when the detected posture of the room user is a seated posture, the control device may control the switches provided for each air intake port in the group of air intake ports closest to the room user in a seated posture so that only the air intake port installed at a height corresponding to the seated posture is opened out of the multiple air intake ports included in the group of air intake ports closest to the room user in a seated posture. In the above case, for example, the supply of ventilation air can be controlled so as to reduce the carbon dioxide concentration near the face of a room occupant in a seated position, thereby enabling the room occupant to maintain a good state of wakefulness. [Effects of the Invention]

[0015] According to the present invention, it is possible to realize a ventilation system that can appropriately ventilate the air in a room, taking into consideration the posture of a room occupant in the room. [Brief explanation of the drawings]

[0016] [Figure 1]1 is a plan view of a target room in which a ventilation system according to an embodiment of the present invention is used. FIG. [Figure 2] 1 is an elevation view of a target room in which a ventilation system according to an embodiment of the present invention is used. FIG. [Figure 3] 1 is a diagram showing a schematic configuration of a ventilation system according to an embodiment of the present invention. [Figure 4] FIG. 2 is a diagram showing an operation flow of the ventilation equipment according to one embodiment of the present invention. [Figure 5] FIG. 10 is a diagram showing a control pattern when there is one room user in the target room. [Figure 6A] FIG. 10 is a diagram showing a control pattern when there are multiple room users in the target room (part 1). [Figure 6B] FIG. 10 is a diagram showing a control pattern when there are multiple room users in the target room (part 2). [Figure 6C] FIG. 10 is a diagram showing a control pattern when there are multiple room users in the target room (part 3). [Figure 6D] FIG. 10 is a diagram showing a control pattern when there are multiple room users in the target room (part 4). DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings referred to in this specification, each device and apparatus is illustrated in a simplified and schematic manner to make the explanation easier to understand. Furthermore, the size of devices and the spacing between devices shown in the drawings may differ from the actual size. Furthermore, in the drawings, devices and people that are not actually visible from the illustrated position may be shown with dashed lines to explain the positional relationship between devices or between devices and people.

[0018] <<About one embodiment of the present invention>> One embodiment (hereinafter referred to as the present embodiment) will be described below. The ventilation system according to this embodiment (hereinafter referred to as ventilation system 10) is used to ventilate the air in a room in a building. Here, a building is a structure (architecture) having one or more rooms that can be used by people, and examples include homes, stores, offices, commercial facilities such as movie theaters and department stores, public facilities such as hospitals and schools, factories, buildings, and other buildings.

[0019] Among the rooms in a building, a room (hereinafter referred to as the target room R) whose indoor air is ventilated using the ventilation equipment 10 is a space partitioned by a ceiling, floor, and walls (interior walls). As shown in FIGS. 1 and 2, the target room R is equipped with bedding such as a bed B, a desk Ta, and a chair Tb, which can be freely used by a person using the target room R (hereinafter referred to as the room user). In this embodiment, the target room R has a relatively large space and can be used by multiple room users at the same time. For example, as shown in FIGS. 1 and 2, a case can be imagined in which one room user is sleeping on a bed B in one corner of the target room R, while another room user is working on a desk Ta in a chair Tb in another location within the same target room R.

[0020] 1 and 2, air supply port groups 12 are provided at multiple locations on the wall of target room R that are located at different positions in the horizontal direction. Air supply port group 12 is made up of multiple air supply ports provided at different heights in the up-down direction (vertical direction), and in this embodiment, it consists of three air supply ports 14a, 14b, and 14c. Each of air supply ports 14a, 14b, and 14c is an outlet for air supplied from air supply device 16, which will be described later.

[0021] In this embodiment, as shown in Fig. 2, the three air intakes 14a, 14b, and 14c are aligned in a vertical row, and the heights of the respective air intakes are uniform among the air intake group 12. Specifically, of the three air intakes 14a, 14b, and 14c, the uppermost air intake 14a is located, for example, above the face of a standard adult male standing on the floor of the target room R (specifically, 2200 mm above the floor). The lowermost air intake 14c is located, for example, near the face of a person sleeping in a bed B installed in the target room R (specifically, 400 mm above the floor). The air intake 14b, which is located in the middle in the vertical direction, is located, for example, near the face of a standard adult male sitting in a chair Tb installed in the target room R (specifically, 1500 mm above the floor).

[0022] There are no particular restrictions on the number of air supply port groups 12 provided in the target room R, and their locations, and these can be set arbitrarily. There are also no particular restrictions on the number of air supply ports included in each air supply port group 12, and the height at which each air supply port is provided (i.e., the location of each air supply port in the vertical direction), and these can be set arbitrarily.

[0023] Furthermore, in this embodiment, as described above, the number of air intakes included in the air intake group 12 and the height at which each of the air intakes 14a, 14b, and 14c is located are common among the air intake groups 12, but these numerical values ​​and setting contents may differ for each air intake group 12.

[0024] Next, the overall configuration of the ventilation equipment 10 will be described. As shown in FIG. 3, the ventilation equipment 10 has an air supplier 16, an attitude detector 18, multiple switches 20a, 20b, 20c, a carbon dioxide concentration sensor 22, and a control device 24.

[0025] The air supply device 16 is a device capable of supplying air into the target room R through the air intake ports 14a, 14b, and 14c, and is formed, for example, by a known blower fan. The air intake ports (not shown) of the air supply device 16 are connected to the three air intake ports 14a, 14b, and 14c included in each of the plurality of air intake port groups 12 provided in the target room R via air passages such as ducts. The installation location of the air supply device 16 is not particularly limited, and the air supply device 16 may be installed inside the target room R or outside the target room R. The number of blower fans constituting the air supply device 16 is also not particularly limited, and the air supply device 16 may be configured with only one blower fan or multiple blower fans.

[0026] The posture detector 18 corresponds to the detector of the present invention, and is a device that detects the posture of a room user present in the target room R. In this embodiment, when multiple room users are present in the target room R, the posture detector 18 detects the posture of each room user for each room user. The posture detector 18 is configured by a known sensor or measurement system that is equipment capable of detecting the posture of a room user, and may be configured by, for example, a human presence sensor, an infrared sensor, a posture sensor, etc. The posture detector 18 may also be configured by a camera that captures images of the target room R, and an analysis device that analyzes the images (video) captured by the camera to identify the presence or absence of room users, the number of room users, and the posture of each room user.

[0027] Each of the switches 20a, 20b, and 20c is a device that operates to switch the open / close state of a corresponding one of the multiple air intake ports 14a, 14b, and 14c, and is configured, for example, by a known damper or louver that can switch between open and closed states. Each of the switches 20a, 20b, and 20c is equipped with an actuator (not shown) and opens and closes by the driving force of this actuator. As described above, the target room R is provided with multiple air intake port groups 12, and each of the air intake port groups 12 includes multiple air intake ports 14a, 14b, and 14c. A switch 20a, 20b, and 20c is provided for each of the multiple air intake ports 14a, 14b, and 14c included in each of the air intake port groups 12. In other words, in this embodiment, if the number of air intake port groups 12 is a natural number m and the number of air intake ports 14a, 14b, and 14c included in each air intake port group 12 is a natural number n, m×n switches are installed. The mounting style and installation locations of the switches 20a, 20b, and 20c are not particularly limited. For example, if each switch 20a, 20b, and 20c is a louver, it may be mounted so as to cover each air intake port 14a, 14b, and 14c from the side of the target room R. Furthermore, if each switch 20a, 20b, and 20c is a damper, it may be disposed midway in a duct laid toward each air intake port 14a, 14b, and 14c.

[0028] The carbon dioxide concentration sensor 22 is a sensor that measures the carbon dioxide concentration at a measurement point set in the target room R and outputs a signal corresponding to the measurement result (i.e., the carbon dioxide concentration at the measurement point). In this embodiment, a plurality of measurement points are set at different heights in the target room R. Specifically, as shown in FIG. 2, one carbon dioxide concentration sensor 22 is installed at the same height as each of the plurality of air supply ports 14a, 14b, and 14c. Furthermore, as shown in FIGS. 1 and 2, each carbon dioxide concentration sensor 22 is installed horizontally near the position of the corresponding air supply port.

[0029] The control device 24 controls the air supply device 16 and the multiple switches 20a, 20b, and 20c based on the posture of the room occupant detected by the posture detector 18 and the output signal of the carbon dioxide concentration sensor 22. The control device 24 is configured with a control circuit or a general-purpose computer, and includes a processor (not shown). This processor may include a programmable logic device (PLD) such as a field programmable gate array (FPGA), whose circuit configuration can be changed after manufacturing, and a dedicated electrical circuit having a dedicated circuit configuration for executing specific processes, such as an application specific integrated circuit (ASIC). It is also possible to use a processor that realizes all of the functions of the control device 24 on a single integrated circuit (IC) chip, such as a system on chip (SoC). The hardware constituting the processor may also be an electrical circuit combining circuit elements such as semiconductor devices. The location where the control device 24 is installed is not particularly limited, and for example, the control device 24 may be installed inside the target room R. Alternatively, the control device 24 may be a device installed outside the target room R, such as a server for a cloud service.

[0030] The control device 24 is also communicatively connected to the air supplier 16, the attitude detector 18, the switches 20a, 20b, 20c, and the carbon dioxide concentration sensor 22 via a communication network established in the building including the target room R. The connection between the control device 24 and other devices may be wired or wireless.

[0031] Then, when the carbon dioxide concentration at any of the multiple measurement points set in the target room R is equal to or higher than a set value, the control device 24 starts the air supplier 16 to supply air to the target room R, i.e., starts ventilation of the air in the target room R. The control device 24 also automatically controls the switches 20a, 20b, and 20c provided for each air supply port based on the posture of the room occupant detected by the posture detector 18. Specifically, the control device 24 switches the opening and closing of each of the switches 20a, 20b, and 20c by controlling the actuators mounted on each of the switches 20a, 20b, and 20c in accordance with the posture of the room occupant in the target room R.

[0032] Next, an example of control by the control device 24 will be described with reference to Figures 4, 5, and 6A to 6D. Note that the following description will be given assuming that a target person is present in the target room R.

[0033] When a target person is present in the target room R, the ventilation equipment 10 including the control device 24 operates according to the procedure shown in Fig. 4. Specifically, the carbon dioxide concentration at each of a plurality of measurement points in the target room R is measured by a carbon dioxide concentration sensor 22 installed at each measurement point. The control device 24 identifies the carbon dioxide concentration at each measurement point based on the output signal from the carbon dioxide concentration sensor 22 (S001). Then, if the carbon dioxide concentration identified in S001 at any of the plurality of measurement points is equal to or greater than a set value (Yes in S002), the control device 24 starts the air supplier 16 and begins ventilating the air in the target room R (S003). The set value used in step S002 can be determined arbitrarily, but may be set to an appropriate value, for example, taking into consideration that the standard value for indoor CO2 concentration set as the building environmental management standard is 1000 ppm.

[0034] The control device 24 also identifies the number of room occupants present in the target room R (S004). There are no particular limitations on the method for identifying the number of room occupants present in the target room R, but for example, the number of room occupants may be identified (estimated) based on the detection results of the posture detector 18. Alternatively, it may be assumed that room occupants are present at measurement points where the carbon dioxide concentration is equal to or greater than a predetermined value, and the number of measurement points where the carbon dioxide concentration is equal to or greater than a predetermined value among multiple measurement points in the horizontal direction from the measurement results of the carbon dioxide concentration sensor 22 may be identified as the number of room occupants.

[0035] If the number of room occupants in the target room R is one (No in S005), the control device 24 identifies the posture of the one room occupant detected by the posture detector 18 (S006). Then, the control device 24 controls the target switch based on the posture identified in S006 (S007). That is, the open / closed state of the target switch is automatically switched by the control device 24 in accordance with the posture of the room occupant detected. Here, the target switch refers to the switches 20a, 20b, and 20c provided for each of the three air intake ports 14a, 14b, and 14c included in the air intake port group 12 that is closest to the room occupant among the multiple air intake port groups 12.

[0036] Furthermore, in step S007, the control device 24 controls the switches 20a, 20b, and 20c for each air supply port so that the air supply port selected based on the detected posture of the room user is opened. More specifically, the control device 24 controls the switches 20a, 20b, and 20c for each air supply port in accordance with the control pattern corresponding to the detected posture of the room user, out of the three control patterns shown in Fig. 5.

[0037] More specifically, suppose the detected posture of the room occupant is, for example, a lying down posture, more specifically, a posture of sleeping on bed B. In this case, control device 24 controls switches 20a, 20b, and 20c provided for each air inlet in air inlet group 12 so that each of three air inlets 14a, 14b, and 14c included in air inlet group 12 closest to the room occupant in a lying down posture is closed. This is to prevent a situation in which, when a room occupant in a lying down posture is asleep, air blown out from the air inlets for ventilation (i.e., wind) directly hits the face or the like of the room occupant, causing discomfort to the room occupant.

[0038] Furthermore, suppose the detected posture of the room occupant is, for example, a standing posture, specifically, a posture of standing or walking on the floor of the target room R. In this case, the control device 24 controls the switches 20a, 20b, and 20c provided for each air inlet in the air inlet group 12 closest to the standing room occupant so that each of the air inlets 14a, 14b, and 14c in the air inlet group 12 closest to the standing room occupant is opened. This takes into account that a standing room occupant is in an active state and the carbon dioxide concentration around the room occupant may be higher. That is, in the above case, ventilation air is blown out from all of the air inlets 14a, 14b, and 14c in the air inlet group 12 closest to the standing room occupant, thereby efficiently reducing the carbon dioxide concentration around the room occupant.

[0039] Furthermore, suppose the detected posture of the room occupant is, for example, a sitting posture, more specifically, a posture in which the occupant is seated on a chair Tb. In this case, the control device 24 controls the switches 20a, 20b, and 20c provided for each air inlet of the air inlet group 12 so that, of the multiple air inlets 14a, 14b, and 14c included in the air inlet group 12 closest to the seated room occupant, only the air inlet installed at the height corresponding to the seated posture is opened. This is to maintain the seated room occupant's wakefulness by blowing ventilation air from the air inlet located near the face of the room occupant. Here, the air intake installed at a height corresponding to the seated position is the air intake closest to the face of the room occupant in a seated position, and specifically, this corresponds to the second air intake 14b from the top.

[0040] Furthermore, when there is only one room occupant in the target room R, the control device 24 controls the switches 20a, 20b, and 20c provided for each air inlet of the air inlet groups 12 (hereinafter also referred to as a specific air inlet group) other than the air inlet group 12 closest to the room occupant. Specifically, the control device 24 controls the switches 20a, 20b, and 20c provided for each air inlet of each specific air inlet group so that all air inlets 14a, 14b, and 14c included in the specific air inlet are open. This control allows the carbon dioxide concentration in the target room R to be quickly uniform.

[0041] On the other hand, if there are multiple room occupants in the target room R (Yes in S005), the posture detector 18 detects the posture of each room occupant at that time, and accordingly, the control device 24 identifies the posture of each of the multiple room occupants (S008). Thereafter, the control device 24 controls the switches 20a, 20b, 20c provided for each air intake port of each air intake port group 12 based on the posture identified for each room occupant (S009).

[0042] In step S009, the control device 24 sets each of the multiple room users as a noted user. Then, for each noted user, the control device 24 controls the switches 20a, 20b, and 20c provided for each of the three air intake ports 14a, 14b, and 14c included in the air intake port group 12 that are closest to the noted user, based on the detected posture of the noted user. The pattern for controlling the switches 20a, 20b, and 20c based on the posture of each noted user is the same as the control pattern when there is only one room user in the target room R.

[0043] To explain the above control using a specific example, assume that there are three room users in target room R, and each room user (i.e., each user of interest) is in a lying down position, a standing position, and a sitting position, as shown in FIG. 6A. In this case, control device 24 closes each of the three air intakes 14a, 14b, and 14c included in air intake group 12 that is closest to the room user who is lying down. Control device 24 also opens each of the three air intakes 14a, 14b, and 14c included in air intake group 12 that is closest to the room user who is standing. Control device 24 also opens only air intake 14b, the second air intake from the top, of the three air intakes 14a, 14b, and 14c included in air intake group 12 that is closest to the room user who is sitting. 6A to 6D, the upper diagram shows a plan view of target room R, and the lower diagram shows an elevation view of target room R. In addition, in each of FIGS. 6A to 6D, of the three air intake ports 14a, 14b, and 14c, open air intake ports are indicated by white circles, and closed air intake ports are indicated by black circles.

[0044] 6B, assume that there are two room users in target room R, and that each room user (each user of interest) is in a lying down position and a standing position, respectively. In this case, control device 24 closes all three air intakes 14a, 14b, and 14c included in air intake group 12 that is closest to the room user in a lying down position, and opens all three air intakes 14a, 14b, and 14c included in air intake group 12 that is closest to the room user in a standing position. 6C, assume that there are two room users in target room R, and that each room user (each user of interest) is in a standing position and a sitting position, respectively. In this case, control device 24 opens all three air intakes 14a, 14b, and 14c in air intake group 12 that is closest to the room user in the standing position, and also opens only air intake 14b, the second air intake from the top, of the three air intakes 14a, 14b, and 14c in air intake group 12 that is closest to the room user in the sitting position. 6D, assume that there are two room users in target room R, and that each room user (each user of interest) is in a lying down position and a sitting position, respectively. In this case, control device 24 closes all three air intakes 14a, 14b, and 14c included in air intake group 12 that is closest to the room user in the lying down position, and opens only air intake 14b, the second air intake from the top, of the three air intakes 14a, 14b, and 14c included in air intake group 12 that is closest to the room user in the sitting position.

[0045] Furthermore, when there are multiple room occupants in the target room R, the control device 24 controls the switches 20a, 20b, and 20c provided for each air inlet of the air inlet groups 12 (i.e., specific air inlet groups) other than the air inlet group closest to the user of interest among the multiple air inlet groups 12. Specifically, the switches 20a, 20b, and 20c provided for each air inlet of each specific air inlet group are controlled so that all air inlets 14a, 14b, and 14c included in the specific air inlet group are opened. This makes it possible to quickly equalize the carbon dioxide concentration in the target room R even when there are multiple room occupants in the target room R.

[0046] The series of steps from S004 onwards described above are repeated until the measurement results of the carbon dioxide concentration sensors 22 in the target room R, that is, the carbon dioxide concentrations at the respective measurement points in the target room R, fall below the set value (S010). Then, when the carbon dioxide concentration falls below the set value at all measurement points in the target room R, the ventilation of the air in the target room R by the ventilation equipment 10, or more precisely, the control flow for ventilation by the control device 24, ends. At this time, the ventilation may be stopped on the condition that a predetermined time (for example, several minutes) has passed since the carbon dioxide concentration fell below the set value at each measurement point in the target room R, and the ventilation may be stopped when this condition is met.

[0047] The ventilation equipment 10 according to the present embodiment described above can appropriately ventilate the air in the target room R, taking into consideration the posture of the room occupant in the target room R. Specifically, the air in the target room R can be ventilated in a manner suited to the situation of the room occupant in the target room R, and the environment in the target room R (specifically, the carbon dioxide concentration, etc.) can be maintained in a good state.

[0048] <<Other embodiments>> Although one embodiment of the ventilation system of the present invention and its operation example have been described above, the above embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit and scope of the present invention. Furthermore, it goes without saying that the present invention includes equivalents thereof.

[0049] In the above embodiment, the target room R in which the ventilation equipment 10 is used is a room that can be used by multiple room users at the same time. However, the ventilation equipment of the present invention can also be used in a room that can be used by only one room user (a private room).

[0050] In the above embodiment, ventilation of the air in the target room R is started when the carbon dioxide concentration is equal to or greater than a set value at any of the multiple measurement points set in the target room R. However, this is not limited to this, and for example, ventilation of the air in the target room R may be started when a room user enters the target room R.

[0051] Furthermore, the control pattern for opening and closing the switches 20a, 20b, and 20c described in the above embodiment is merely an example, and other patterns are also possible. That is, the control device 24 only needs to control the switches 20a, 20b, and 20c provided for each air inlet in the air inlet group 12 based on the posture of the room occupant in the target room R, and it is more preferable that the control pattern does not cause discomfort to the room occupant and efficiently reduces the carbon dioxide concentration in the target room R. [Explanation of symbols]

[0052] 10 Ventilation equipment 12 Air supply port group 14a,14b,14c Air supply port 16 Air supply machine 18 Attitude detector (detector) 20a,20b,20c switch 22 Carbon dioxide concentration sensor 24 Control device B Bed R Target room Ta Desk Tb chair

Claims

1. an air supply device connected to each of a plurality of air supply ports provided at different heights in the target room and capable of supplying air into the target room through the air supply ports; a switch provided for each of the air inlets and operable to open and close the air inlets; a detector for detecting the posture of a room user in the target room; A ventilation system having a control device that controls the open / close switch for each air intake port based on the detected posture of the room occupant.

2. The ventilation system according to claim 1 , wherein the control device controls the switch for each of the air supply ports so that the air supply port selected based on the detected posture of the room occupant is opened.

3. When a plurality of air supply port groups each consisting of a plurality of the air supply ports are provided at different positions in the horizontal direction in the target room, the switch is provided for each of the plurality of air inlets included in each of the air inlet groups, The ventilation equipment described in claim 1, wherein the control device controls the opening and closing switch provided for each of the plurality of air intakes included in the group of air intakes closest to the room user based on the detected posture of the room user.

4. When there are a plurality of room users in the target room, the detector detects the posture of each of the room users, The control device Each of the plurality of room users is designated as a noted user, The ventilation equipment according to claim 3, wherein the opening and closing devices provided for each of the plurality of air intakes included in the group of air intakes closest to the noted user are controlled based on the detected posture of the noted user.

5. a sensor that is installed at each of a plurality of measurement points set at different heights in the target room and outputs a signal corresponding to the carbon dioxide concentration at the measurement point; 5. The ventilation equipment of claim 3, wherein when the carbon dioxide concentration determined based on the output signal of the sensor at any of the plurality of measurement locations is equal to or higher than a set value, the control device controls the switches provided for each air intake port of each of the plurality of air intake groups so that the air intake ports included in the air intake group other than the air intake group closest to the room user are opened.

6. The ventilation equipment according to claim 3 or 4, wherein the number of the air intakes included in the air intake groups and the height at which each of the air intakes is provided are common among the air intake groups.

7. The ventilation equipment described in claim 3 or 4, wherein when the detected posture of the room user is a sleeping posture, the control device controls the opening / closing devices provided for each air intake port in the group of air intake ports closest to the room user in a sleeping posture so that each of the air intake ports included in the group of air intake ports closest to the room user in a sleeping posture is closed.

8. The ventilation equipment described in claim 3 or 4, wherein when the detected posture of the room user is standing, the control device controls the opening and closing devices provided for each air intake port in the group of air intake ports closest to the room user in a standing posture so that each of the air intake ports included in the group of air intake ports closest to the room user in a standing posture opens.

9. The ventilation equipment described in claim 3 or 4, wherein when the detected posture of the room user is a sitting posture, the control device controls the opening and closing devices provided for each air intake port of the group of air intake ports closest to the room user in a sitting posture so that only the air intake port installed at a height corresponding to the sitting posture is opened out of the multiple air intake ports included in the group of air intake ports closest to the room user in a sitting posture.

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