Indoor Environmental Control System

Abstract

To provide an indoor environment management system capable of checking a state of indoor air.SOLUTION: An indoor environment management system is equipped with a display portion 140, an indoor sensor 110 that detects a state of indoor air according to a plurality of indexes, and a control portion that makes the display portion 140 to display the state of the indoor air detected by the indoor sensor 110.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a technique for an indoor environment control system capable of controlling an indoor environment. [Background technology]

[0002] Conventionally, technology for an indoor environment control system capable of controlling an indoor environment has been publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 discloses a temperature environment control system that controls the opening and closing of windows installed in a room and the on / off of an air conditioner based on the temperature detected by a room temperature sensor. In the technology described in Patent Document 1, the opening and closing of windows installed in a room space and the on / off of an air conditioner are controlled based on the temperature detected by a room temperature sensor. In addition, in the technology described in Patent Document 1, buttons for various operations, the temperature set by the air conditioner, etc. are displayed on the display screen of the operation panel.

[0004] However, with the technology described in Patent Document 1, although the set temperature and the like displayed on the display screen can be confirmed, the actual state of the air in the room cannot be confirmed. Particularly in recent years, interest in indoor ventilation has increased, and there is a demand for technology that allows confirmation of the state of the air in the room. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2015-161446 A Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and the problem to be solved by the present invention is to provide an indoor environment control system capable of checking the state of indoor air. [Means for solving the problem]

[0007] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0008] That is, in claim 1, the present invention comprises a display unit, a first detection unit capable of detecting the state of indoor air according to a plurality of indexes including at least temperature and humidity, a second detection unit capable of detecting the state of outdoor air according to the plurality of indexes, and a control unit that causes the display unit to display the state of the indoor air detected by the first detection unit and the state of the outdoor air detected by the second detection unit, and the control unit is capable of causing the display unit to display a warning regarding ventilation based on the state of the indoor air, and when ventilation of the indoor air is started by opening a window for ventilation, and the temperature of the indoor air is lower than the temperature of the outdoor air, and when a rise in the indoor temperature since the start of ventilation satisfies a predetermined condition, the control unit causes the display unit to display a first warning to encourage the use of air conditioning, and when the humidity of the indoor air is lower than the humidity of the outdoor air after the first warning is displayed, the control unit causes the display unit to display a first warning regarding ventilation based on the state of the indoor air, and when the humidity of the indoor air is lower than the humidity of the outdoor air and the temperature of the indoor air since the start of ventilation satisfies a predetermined condition, the control unit causes the display unit to display a first warning regarding ventilation based on the state of the indoor air, and when the humidity of the indoor air is lower than the humidity of the outdoor air after the display of the first warning, the control unit causes the display unit to display a first warning regarding ventilation based on the state of the indoor air, and when the humidity of the indoor air is lower than the humidity of the outdoor air ... Degree When a predetermined condition is satisfied, a second warning is displayed to prompt the user to stop ventilating the room.

[0009] In claim 2, the control unit can cause the display unit to display the indoor air condition in the form of a graph.

[0010] In claim 3, the device further includes a ventilation start detection unit that detects when ventilation of the room has started, and the control unit is capable of displaying on the display unit both the state of the air in the room when ventilation of the room has started and the current state of the air in the room.

[0011] In claim 4, the device further includes a ventilation start detection unit which detects when ventilation of the room has started, and a ventilation end detection unit which detects when ventilation of the room has ended, and the control unit is capable of causing the display unit to display both the state of the air in the room when ventilation of the room has started, and the state of the air in the room when ventilation of the room has ended.

[0012] In claim 5 ,before The control unit is capable of causing the display unit to display a result of a comparison between the state of the indoor air and the state of the outside air detected by the second detection unit.

[0013] In claim 6, the control unit is capable of causing the display unit to display a reference value that serves as a guide for grasping the state of the air in the room.

[0015] Claim 7 In the present invention, the multiple indicators include carbon dioxide concentration Degree It is included.

[0016] Claim 8 In the present invention, the multiple indicators include dust concentration and odor. Effect of the Invention

[0017] The present invention has the following advantages.

[0018] In claim 1, the air condition inside the room can be checked. In addition, by issuing a warning to the user regarding ventilation, it is possible to prompt the user to stop ventilation, etc. as appropriate.

[0019] In claim 2, it is possible to easily check the state of the air in the room.

[0020] According to claim 3, it is possible to easily check the change in the state of the air in the room due to ventilation.

[0021] According to claim 4, it is possible to easily check the change in the state of the air in the room due to ventilation.

[0022] In claim 5, it is possible to easily grasp the state of the air inside the room by comparing it with the outside air.

[0023] According to claim 6, the state of the air in the room can be easily grasped.

[0025] Claim 7 In this application, you can check the quality of the air in your room based on indicators that are of general interest.

[0026] Claim 8 In this case, you can check the indoor air condition in relatively detail. [Brief description of the drawings]

[0027] [Figure 1] 1 is a schematic diagram showing an indoor environment control system according to an embodiment of the present invention and a room to which the system is applied; [Diagram 2] FIG. 1 is a block diagram showing an indoor environment control system. [Diagram 3] 10 is a flowchart showing the process performed by the control unit when opening a window for ventilation. [Figure 4] 4 is a flowchart showing a continuation of FIG. 3. [Diagram 5] 5 is a flowchart showing the continuation of FIG. 4. [Figure 6] (a) is a diagram showing an example of the display on the display unit when ventilation starts by opening a window, (b) is a diagram showing an example of the display on the display unit while ventilation is being performed by opening a window. [Figure 7] (a) is a diagram showing an example of the display on the display unit when ventilation with the window open is finished, (b) is a diagram showing an example of the display on the display unit when a warning is displayed. [Figure 8] 4 is a flowchart showing the processing by the control unit when mechanical ventilation is performed. [Figure 9] FIG. 13 is a diagram showing an example of the display on the display unit when mechanical ventilation is terminated. [Figure 10] 10 is a flowchart showing a modified example of the process by the control unit when opening a window for ventilation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] First, a room 1 to which an indoor environment control system 100 according to an embodiment of the present invention is applied will be described.

[0029] 1 shows, as an example, a room 1 provided in a house. The room 1 is provided with a window 10, an air conditioner 20, a ventilator fan 30, and the like.

[0030] Two windows 10 are provided in the room 1. The two windows 10 are each provided at an appropriate position on the wall surface of the room 1. By opening the window 10, the internal space (indoors) of the room 1 is connected to the outdoors, allowing ventilation.

[0031] The air conditioner 20 adjusts the temperature, humidity, etc., of a room. The air conditioner 20 is provided at an appropriate position in the room 1.

[0032] The ventilation fan 30 forcibly ventilates the room. The ventilation fan 30 is composed of a fan that generates an air flow, a duct through which the air circulates, and a drive source (not shown) such as a motor that drives the fan. The ventilation fan 30 is provided with an operating device (switch) that switches between operation and non-operation (stop), and can be operated by a user (resident, etc.) at will. The ventilation fan 30 is provided in an appropriate position in the room 1.

[0033] Next, the configuration of the indoor environment control system 100 will be described with reference to FIGS.

[0034] The indoor environment control system 100 is for grasping the environment (particularly, the air condition) of the internal space (room) of the room 1. The indoor environment control system 100 mainly includes an indoor sensor 110, an outdoor sensor 120, a window opening / closing sensor 130, a display unit 140, and a control unit 150.

[0035] The indoor sensor 110 is for detecting the state of air in a room. The indoor sensor 110 is provided at an appropriate position in the room 1. The indoor sensor 110 can detect the state of air according to a plurality of indices. Specifically, the indoor sensor 110 can detect the carbon dioxide concentration, temperature, humidity, dust concentration, and odor in the room. The indoor sensor 110 is configured by combining a plurality of types of sensors so as to be able to detect the state of air according to the above-mentioned plurality of indices. Specifically, the indoor sensor 110 is configured by a carbon dioxide concentration sensor 111, a temperature sensor 112, a humidity sensor 113, a dust concentration sensor 114, and an odor sensor 115, as shown in FIG. 2.

[0036] The carbon dioxide concentration sensor 111 detects the concentration of carbon dioxide in the air. The carbon dioxide concentration sensor 111 can employ various types of sensors, such as an optical type or an electrochemical type.

[0037] The temperature sensor 112 detects the temperature of the air.

[0038] The humidity sensor 113 detects the humidity (relative humidity) of the air.

[0039] The dust concentration sensor 114 detects the concentration of dust (particulate matter) in the air. As the system of the dust concentration sensor 114, various systems such as an optical system or a weight system can be adopted.

[0040] Odor sensor 115 detects odors in the air (more specifically, the degree of odor quantified). Various types of odor sensor 115 can be used, such as a semiconductor type or a quartz oscillator type.

[0041] The outdoor sensor 120 shown in FIG. 1 and FIG. 2 is for detecting the state of outdoor air (outdoor air). The outdoor sensor 120 is provided at an appropriate position outdoors. Like the indoor sensor 110, the outdoor sensor 120 can detect the state of air according to a plurality of indices. Specifically, the outdoor sensor 120 can detect the outdoor carbon dioxide concentration, temperature, humidity, dust concentration, and odor. The outdoor sensor 120 is configured by combining a plurality of types of sensors so as to be able to detect the state of air according to the above-mentioned plurality of indices. Specifically, as shown in FIG. 2, the outdoor sensor 120 is configured by a carbon dioxide concentration sensor 121, a temperature sensor 122, a humidity sensor 123, a dust concentration sensor 124, and an odor sensor 125. Note that the configuration of the outdoor sensor 120 is generally similar to that of the indoor sensor 110, and therefore a detailed description thereof will be omitted.

[0042] The window opening / closing sensor 130 is for detecting the open / closed state of the window 10. The window opening / closing sensor 130 is provided on each window 10. The window opening / closing sensor 130 can employ various types, such as an optical type or a contact type. The window opening / closing sensor 130 can detect whether the window 10 is open or closed, for example, by detecting the position of the window frame of the window 10. Since opening the window 10 enables ventilation between the air inside the room and the outside air, it can be inferred that the timing at which the window opening / closing sensor 130 detects that the window 10 is open is the timing at which ventilation starts.

[0043] The display unit 140 is for displaying various types of information. The display unit 140 can be configured with, for example, a liquid crystal panel, a touch panel, etc. The display unit 140 is provided at an appropriate position in the room 1.

[0044] The control unit 150 shown in FIG. 2 controls the operation of the display unit 140 to display various information on the display unit 140. The control unit 150 includes an arithmetic processing unit such as a CPU, a storage unit such as a RAM or a ROM, and the like. The storage unit of the control unit 150 stores in advance various information and programs used when controlling the operation of the indoor environment management system 100 (particularly, the display unit 140). The arithmetic processing unit of the control unit 150 executes the programs and performs predetermined arithmetic processing using the various information, thereby causing the display unit 140 to display various information. The control unit 150 is provided at an appropriate location in the house. The control unit 150 can also be formed integrally with the display unit 140 (built into the housing of the display unit 140).

[0045] The control unit 150 is connected to the indoor sensor 110 and can acquire the detection results from the indoor sensor 110. That is, the control unit 150 can detect the state of the indoor air (carbon dioxide concentration, temperature, humidity, dust concentration, and odor).

[0046] The control unit 150 is also connected to the outdoor sensor 120 and can acquire the detection results from the outdoor sensor 120. That is, the control unit 150 can detect the outdoor air condition (carbon dioxide concentration, temperature, humidity, dust concentration, and odor).

[0047] The control unit 150 is also connected to a window opening / closing sensor 130 and can obtain the detection result of the open / closed state of the window 10 by the window opening / closing sensor 130 .

[0048] The control unit 150 is also connected to the ventilation fan 30 and can grasp the operating state of the ventilation fan 30 (whether it is operating or not).

[0049] The control unit 150 is also connected to the display unit 140, and can cause the display unit 140 to display any desired information.

[0050] By using the indoor environment control system 100 configured as described above, the state of the indoor air can be grasped in association with ventilation of the room 1. In this embodiment, the ventilation methods assumed are a method of ventilating the room 1 by opening the window 10 (window opening ventilation) and a method of ventilating the room 1 by operating the ventilation fan 30 (mechanical ventilation). Below, the process for grasping the state of the indoor air when ventilation is performed by each method will be described in order.

[0051] First, a process for grasping the state of air in a room when ventilation by opening a window will be described.

[0052] In step S101 shown in FIG. 3, the control unit 150 determines whether or not the window 10 is open based on the detection result by the window opening / closing sensor 130. More specifically, the control unit 150 determines whether or not at least one of the multiple windows 10 provided in the room 1 is open. If the window 10 is open, it is presumed that the resident has started ventilating the room 1. If the control unit 150 determines that the window 10 is open (YES in step S101), the control unit 150 proceeds to step S102. On the other hand, if the control unit 150 determines that the window 10 is not open (NO in step S101), the control unit 150 performs the process of step S101 again.

[0053] In step S102, the control unit 150 graphs the numerical values ​​of the detection result by the indoor sensor 110 at the start of ventilation (the point in time when the window 10 is opened, i.e., the point in time when the determination in step S101 is YES), and displays the graph on the display unit 140. Fig. 6(a) shows an example of the display on the display unit 140 by the processing in step S102.

[0054] As shown in FIG. 6(a), the control unit 150 causes the display unit 140 to display the carbon dioxide concentration and other data detected by the indoor sensor 110 at the start of ventilation in the form of a graph (radar chart). Since the indoor sensor 110 detects the air condition based on five indices, the radar chart is drawn in a pentagonal shape. The names of the corresponding indices are displayed near each vertex of the radar chart. Note that, although the illustrated example does not show specific numerical values ​​or scales for each index, it is also possible to draw the numerical values ​​and other data.

[0055] In addition, the control unit 150 plots the reference value of each index on the radar chart with a dashed line. The reference value is set to an appropriate value so that the resident or the like can understand the indoor air condition by looking at the radar chart on the display unit 140.

[0056] For example, a concentration that is generally considered appropriate (e.g., 1000 ppm) can be set as the reference value of the carbon dioxide concentration. By setting the reference value in this manner, the resident can easily determine whether the carbon dioxide concentration in the room is appropriate or not by comparing the carbon dioxide concentration displayed on the display unit 140 with the reference value.

[0057] Furthermore, the standard humidity value can be set to a humidity level (e.g., 70%) that is generally considered to be favorable for mold growth. By setting the standard value in this manner, the resident can easily determine whether or not the indoor conditions are favorable for mold growth by comparing the humidity displayed on the display unit 140 with the standard value.

[0058] The reference value displayed on the display unit 140 may be a value determined in advance, or may be a value that can be arbitrarily set by a resident or the like.

[0059] After performing the process of step S102, the control unit 150 proceeds to step S103.

[0060] In step S103, the control unit 150 starts a process of graphing the numerical values ​​of the current (present) detection results by the indoor sensor 110 and displaying them on the display unit 140. After the process of step S103 (until the process of step 108, step S115, or step S125 described below is performed), the control unit 150 continues to graph and display the current indoor condition on the display unit 140. That is, the latest indoor condition is always displayed on the display unit 140. FIG. 6(b) shows an example of the display on the display unit 140 by the process of step S103.

[0061] As shown in FIG. 6(b), the control unit 150 causes the display unit 140 to display the carbon dioxide concentration etc. currently detected by the indoor sensor 110 in a graph (radar chart). At this time, the graph is drawn in a manner different from that at the start of ventilation (for example, by drawing it in a different color or line type, or by filling the inside of the graph with an appropriate color) so that it can be distinguished from the graph at the start of ventilation. In FIG. 6(b), the graph at the start of ventilation is shown by a solid line, and the current graph by a dashed dotted line. As shown in FIG. 6, it is also possible to indicate the air condition at which each graph shows by using text such as "at the start of ventilation" or "currently".

[0062] In this way, by displaying the current indoor air condition in a graph on the display unit 140, the resident can easily understand the indoor condition. In addition, by displaying both the graph at the start of ventilation and the current graph on the display unit 140, the resident can easily understand the change in the indoor air condition due to ventilation. For example, in the example shown in Fig. 6(b), it can be easily understood that the carbon dioxide concentration, dust concentration, and odor have decreased and the temperature and humidity have increased due to ventilation.

[0063] After performing the process of step S103, the control unit 150 proceeds to step S104.

[0064] In step S104, the control unit 150 determines whether or not the indoor temperature detected by the indoor sensor 110 is lower than the outdoor temperature detected by the outdoor sensor 120. If the control unit 150 determines that the indoor temperature is not lower than the outdoor temperature (NO in step S104), the process proceeds to step S105. On the other hand, if the control unit 150 determines that the indoor temperature is lower than the outdoor temperature (YES in step S104), the process proceeds to step S111 (see FIG. 4).

[0065] In step S105, the control unit 150 determines whether or not the window 10 is closed based on the detection result by the window opening / closing sensor 130. More specifically, the control unit 150 determines whether or not all of the multiple windows 10 provided in the room 1 are closed. If all of the windows 10 are closed, it is presumed that the resident has stopped ventilating the room 1. If the control unit 150 determines that the window 10 is closed (YES in step S105), the control unit 150 proceeds to step S106. On the other hand, if the control unit 150 determines that the window 10 is not closed (NO in step S105), the control unit 150 performs the process of step S104 again.

[0066] In step S106, the control unit 150 graphs the numerical values ​​of the detection result by the indoor sensor 110 at the end of ventilation (the point in time when the window 10 is closed, i.e., the point in time when the determination in step S105 is YES), and displays them on the display unit 140 together with the graph at the start of ventilation. Fig. 7(a) shows an example of the display on the display unit 140 by the processing in step S106.

[0067] As shown in Fig. 7(a), the control unit 150 causes the display unit 140 to display the carbon dioxide concentration etc. detected by the indoor sensor 110 at the end of ventilation in a graph (radar chart). At this time, the graph is drawn in a manner different from the graph at the start of ventilation so that it can be distinguished from the graph at the start of ventilation. In Fig. 7(a), the graph at the start of ventilation is shown by a solid line, and the graph at the end of ventilation is shown by a dashed dotted line.

[0068] Furthermore, in step S106, the control unit 150 causes the display unit 140 to display the result of comparison between the indoor air state at the end of ventilation and the outdoor air state. For example, the control unit 150 calculates the percentage by which the area of ​​the graphed detection results by the indoor sensor 110 before and after ventilation approaches the area of ​​the graphed detection results by the outdoor sensor 120 (the area of ​​the pentagon drawn on the radar chart) and causes the display unit 140 to display this (see FIG. 7(a)). In this way, by displaying the result of comparison between the indoor air state and the outdoor air state, the resident can easily grasp the effect of ventilation. Note that in this embodiment, the outdoor air state is not displayed as a graph on the display unit 140.

[0069] After performing the process of step S106, the control unit 150 returns to the process of step S101.

[0070] In step S111 (see FIG. 4) following step S104, the control unit 150 determines whether or not the change in room temperature since the start of ventilation has exceeded 2° C. Specifically, when performing the process of step S111, the outside air temperature is higher than the room temperature (YES in step S104), so the control unit 150 determines whether or not the room temperature has increased by more than 2° C. compared to the start of ventilation. If the control unit 150 determines that the change in room temperature since the start of ventilation has exceeded 2° C. (YES in step S111), the control unit 150 proceeds to step S112. On the other hand, if the control unit 150 determines that the change in room temperature since the start of ventilation has not exceeded 2° C. (NO in step S111), the control unit 150 proceeds to step S121 (see FIG. 5).

[0071] In step S112, the control unit 150 causes the display unit 140 to display a predetermined warning (see FIG. 7(b)). Here, since it is known from the process of step S111 that the room temperature has risen relatively significantly, the control unit 150 issues a warning urging the air conditioner 20 to cool the room (or to increase the cooling). For example, the control unit 150 causes the display unit 140 to display a message such as "The room temperature is rising, so cooling is recommended." After performing the process of step S112, the control unit 150 proceeds to step S113.

[0072] In step S113, the control unit 150 determines whether the humidity of the indoor air detected by the indoor sensor 110 is less than the humidity of the outside air detected by the outdoor sensor 120 and the indoor humidity exceeds 70%. If the control unit 150 determines that the humidity of the indoor air is less than the humidity of the outside air and the indoor humidity exceeds 70% (YES in step S113), the control unit 150 proceeds to step S114. On the other hand, if the control unit 150 determines that the humidity of the indoor air is equal to or greater than the humidity of the outside air or that the indoor humidity is equal to or less than 70% (NO in step S113), the control unit 150 proceeds to step S115.

[0073] In step S114, the control unit 150 causes the display unit 140 to display a predetermined warning (see FIG. 7(b)). Here, since the current indoor humidity is relatively high due to the processing of step S113 and it is expected that the humidity will continue to rise due to ventilation, the control unit 150 issues a warning urging the user to stop ventilation by opening the window 10. For example, the control unit 150 causes the display unit 140 to display a message such as "As the humidity is rising, we recommend that you close the window and end ventilation." After performing the processing of step S114, the control unit 150 proceeds to step S115.

[0074] The processes of steps S115 and S116 are similar to those of steps S105 and S106 (see FIG. 3). That is, when the window 10 is closed, the control unit 150 graphs the state of the indoor air before and after ventilation, and displays the comparison result between the state of the indoor air and the state of the outside air (see FIG. 7(a)).

[0075] In step S121 (see FIG. 5) following step S111, the control unit 150 determines whether the humidity of the indoor air detected by the indoor sensor 110 is less than the humidity of the outdoor air detected by the outdoor sensor 120 and the indoor humidity exceeds 70%. The process of step S121 is similar to the process of step S113 (see FIG. 4). If the control unit 150 determines that the humidity of the indoor air is less than the humidity of the outdoor air and the indoor humidity exceeds 70%, the control unit 150 proceeds to step S115 (see FIG. 4). On the other hand, if the control unit 150 determines that the humidity of the indoor air is equal to or greater than the humidity of the outdoor air or that the indoor humidity is equal to or less than 70%, the control unit 150 proceeds to step S122.

[0076] The processes of steps S122 and S123 are similar to those of steps S105 and S106 (see FIG. 3). That is, when the window 10 is closed, the control unit 150 graphs the state of the indoor air before and after ventilation, and displays the comparison result between the state of the indoor air and the state of the outside air (see FIG. 7(a)).

[0077] As described above, when a resident opens a window for ventilation, the control unit 150 detects that the window 10 is open (step S101) and automatically starts displaying the indoor air condition (steps S102 and S103). The resident can check the display unit 140 to understand the change in the indoor air condition caused by ventilation. For example, the resident can understand that the air condition has improved due to ventilation (e.g., the carbon dioxide concentration has decreased) or that the air condition has worsened due to ventilation (e.g., the temperature or humidity has increased).

[0078] In addition, because the reference values ​​of each index are displayed on the display unit 140, the resident can use these reference values ​​as a guide for deciding when to end ventilation. Furthermore, when ventilation is ended, the control unit 150 displays the air conditions before and after ventilation (step S106), so that the resident can easily check the effect of ventilation.

[0079] Next, a process for grasping the state of air in a room when mechanical ventilation is performed will be described.

[0080] In step S201 shown in Fig. 8, the control unit 150 determines whether or not the ventilation fan 30 has been activated. If the ventilation fan 30 has been activated, it is presumed that the resident has started ventilating the room 1. If the control unit 150 determines that the ventilation fan 30 has been activated (YES in step S201), the process proceeds to step S202. On the other hand, if the control unit 150 determines that the ventilation fan 30 has not been activated (NO in step S201), the process of step S201 is performed again.

[0081] The processes of steps S202 and S203 are the same as those of steps S102 and S103 (see FIG. 3). That is, the control unit 150 starts a process of displaying the indoor air condition at the start of ventilation (the time when the ventilation fan 30 is operated, i.e., the time when YES is determined in step S201) on the display unit 140 and also displays the current indoor air condition on the display unit 140 (see FIG. 6(b)). After performing the process of step S203, the control unit 150 proceeds to step S205.

[0082] In step S205, the control unit 150 determines whether the ventilation fan 30 has stopped. If the ventilation fan 30 has stopped, it is assumed that the resident has finished ventilating the room 1. If the control unit 150 determines that the ventilation fan 30 has stopped (YES in step S205), the process proceeds to step S206. On the other hand, if the control unit 150 determines that the ventilation fan 30 has not stopped (NO in step S205), the process of step S205 is performed again.

[0083] In step S206, the control unit 150 performs the same process as in step S106 (see FIG. 3). That is, the control unit 150 graphs the indoor air conditions before and after ventilation, and displays the comparison result between the indoor air condition and the outdoor air condition (see FIG. 9).

[0084] Furthermore, the control unit 150 causes the display unit 140 to display what percentage of the indoor air has been replaced with outside air (exchange rate). The exchange rate can be calculated from the performance (air volume) of the ventilation fan 30, the operating time, and the volume of the room 1. From this information, the control unit 150 calculates what percentage of the air in the room 1 has been replaced with outside air, and causes the display unit 140 to display this. The resident can understand the ventilation status by checking this display.

[0085] As described above, when the resident performs mechanical ventilation, similarly to when the resident performs ventilation by opening a window, the control unit 150 detects that the ventilator fan 30 has been activated (step S201) and automatically starts displaying the indoor air condition (steps S202 and S203). The resident can grasp the change in the indoor air condition due to ventilation by checking the display unit 140.

[0086] The process for understanding the indoor air condition as described above (see Figures 3 to 9) can be executed at any time as appropriate, but it is desirable to execute it at least all the time while the residents of the house are at home so that the residents can check the air condition at any time of their choosing.

[0087] Although the process for performing ventilation by opening a window (see Figs. 3 to 5) and the process for performing mechanical ventilation (see Fig. 8) have been described separately, it is possible to make the two processes common to each other. For example, in step S101 in Fig. 3, it is possible to detect that ventilation has started by determining not only whether the window 10 is open but also whether the ventilation fan 30 is operating.

[0088] As described above, the indoor environment control system 100 according to this embodiment has the following features: A display unit 140; an indoor sensor 110 (first detection unit) capable of detecting the indoor air condition according to a plurality of indicators; A control unit 150 that causes the display unit 140 to display the indoor air condition detected by the indoor sensor 110; It is equipped with the following. With this configuration, the state of the air in the room can be confirmed. That is, by checking the display of the display unit 140, the state of the air in the room can be confirmed, and for example, this can be used as a guide for ventilation time when performing ventilation. In particular, in this embodiment, the state of the air can be displayed according to multiple indicators, so that the state of the air can be grasped in relatively detail.

[0089] In addition, the control unit 150 The display unit 140 can display the indoor air condition in the form of a graph. This configuration makes it easier to check the air condition in the room.

[0090] In addition, the indoor environment control system 100 includes: The room ventilation system further includes a window opening / closing sensor 130 and a ventilation fan 30 (ventilation start detection unit) for detecting when ventilation in the room has started. The control unit 150 The display unit 140 can display both the state of the air in the room when ventilation of the room is started and the current state of the air in the room. This configuration makes it easier to check the change in the state of the air in the room due to ventilation. That is, the current state of the air can be understood by comparing the state of the air at the start of ventilation with the current state of the air.

[0091] In addition, the indoor environment control system 100 includes: A window opening / closing sensor 130 and a ventilation fan 30 (ventilation start detection unit) for detecting that ventilation in the room has started; A window opening / closing sensor 130 and a ventilation fan 30 (ventilation end detection unit) for detecting the end of ventilation in the room; Further comprising: The control unit 150 The display unit 140 can display both the state of the air in the room when ventilation of the room starts and the state of the air in the room when ventilation of the room ends. This configuration makes it easier to check the change in the state of the air in the room due to ventilation. That is, by comparing the state of the air at the start of ventilation with the state of the air at the end of ventilation, the state of the air after ventilation can be grasped.

[0092] In addition, the indoor environment control system 100 includes: Further comprising an outdoor sensor 120 (second detection unit) capable of detecting the state of the outside air according to the plurality of indexes; The control unit 150 The display unit 140 can display the result of comparing the indoor air condition with the outdoor air condition detected by the outdoor sensor 120 . This configuration makes it easier to understand the state of indoor air by comparing it with the outside air. For example, it is possible to understand how close the state of indoor air has become to the outside air through ventilation, and to confirm the effect of ventilation.

[0093] In addition, the control unit 150 The display unit 140 can display a reference value that serves as a guide for understanding the state of the air in the room. This configuration makes it easier to grasp the state of the air in the room.

[0094] In addition, the control unit 150 Based on the state of the air in the room, it is possible to cause the display unit 140 to display a warning regarding ventilation. With this configuration, a warning regarding ventilation can be given to the user, making it possible to prompt the user to stop ventilation, etc. as appropriate.

[0095] In addition, the plurality of indexes include: These include carbon dioxide concentration, temperature and humidity. By configuring in this way, it is possible to check the state of the air inside the room based on indicators that are generally of great interest (carbon dioxide concentration, temperature, and humidity).

[0096] In addition, the plurality of indexes include: These include dust concentration and odor. By configuring in this way, the indoor air condition can be checked in relatively detail.

[0097] The indoor sensor 110 according to this embodiment is one embodiment of a first detection unit according to the present invention. Moreover, the window open / close sensor 130 and the ventilation fan 30 according to this embodiment are one embodiment of a ventilation start detection unit and a ventilation end detection unit according to the present invention. Moreover, the outdoor sensor 120 according to this embodiment is one embodiment of a second detection unit according to the present invention.

[0098] Although one embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0099] For example, in this embodiment, five indices, namely, carbon dioxide concentration, temperature, humidity, dust concentration, and odor, are exemplified as indices showing the state of the air, but the present invention is not limited to this. That is, it is possible to use some of these five indices (for example, only carbon dioxide concentration, temperature, and humidity) as indices, or to use other indices (for example, ozone concentration, carbon monoxide concentration, sulfur dioxide concentration, etc.) in combination.

[0100] In addition, in this embodiment, an example is shown in which the air condition is graphed and displayed on the display unit 140 (see, for example, FIG. 6, etc.), but the present invention is not limited to this. For example, it is also possible to display detection values ​​(numerical values) based on each index on the display unit 140 without graphing.

[0101] In addition, in this embodiment, an example is shown in which the air condition is displayed on the display unit 140 using a radar chart (see, for example, FIG. 6, etc.), but the present invention is not limited to this. For example, it is also possible to display using other graphs (for example, bar graphs, line graphs, pie charts, band graphs, etc.) or to display a combination of multiple graphs.

[0102] In addition, in this embodiment, examples of detecting the start and end of ventilation are shown in which the window open / close sensor 130 is used, and in which the ventilation fan 30 is operated or not (see FIG. 1, for example), but the present invention is not limited to these, and it is possible to detect the start and end of ventilation in various other ways. For example, it is possible to detect the presence or absence of air flow due to ventilation with a wind speed sensor, or for the resident to manually input the timing of the start and end of ventilation to the control unit 150 (for example, by operating a touch panel, etc.).

[0103] In addition, in this embodiment, an example is shown in which the results of comparing the areas of radar charts are displayed as a result of comparing the indoor air condition with the outdoor air condition (see, for example, FIG. 7(a)), but the present invention is not limited to this, and the comparison criteria can be set arbitrarily. For example, instead of comparing the areas of radar charts, it is also possible to compare the values ​​(numerical values) of each index individually and specifically show the magnitude relationship and difference. Also, like the indoor air condition, it is possible to display the outdoor air condition on a radar chart so that the two graphs can be visually compared.

[0104] In addition, in this embodiment, an example is shown in which the comparison result between the indoor air state and the outdoor air state at the end of ventilation is displayed (for example, see FIG. 7(a)), but the present invention is not limited to this, and it is possible to display the comparison result at any timing. For example, it is also possible to display the comparison result between the indoor air state and the outdoor air state while ventilation is being performed.

[0105] In addition, in this embodiment, an example is shown in which a reference value serving as a guide for grasping the air condition is displayed on the display unit 140 (for example, see FIG. 6, etc.), but the value of the reference value is not particularly limited and can be set arbitrarily. Also, the reference value does not necessarily need to be displayed.

[0106] In addition, in this embodiment, as an example of a warning, a warning to perform cooling when the temperature rises by more than 2°C (see steps S111 and S112 in FIG. 4) has been shown, but temperature-based warnings are not limited to warnings to perform cooling, and various other warnings are possible. For example, it is also possible to warn to perform heating when the temperature drops by a certain value or more. Similarly, with regard to humidity warnings, it is possible to not only warn when the humidity becomes high (see steps S113 and S114 in FIG. 4), but also to warn when the humidity becomes low.

[0107] In addition, in this embodiment, an example is shown in which a warning is displayed to urge the user to stop ventilation based on temperature and humidity (see Fig. 4 and Fig. 7(b)), but the present invention is not limited to this, and a warning can be displayed based on various criteria. For example, it is also possible to urge the user to stop ventilation when the dust concentration exceeds a predetermined threshold (when ventilation is being performed in a situation where the dust concentration in the outside air is high).

[0108] In addition, in this embodiment, an example is shown in which a warning is displayed to urge the user to stop ventilation (see Fig. 4 and Fig. 7(b)), but the present invention is not limited to this, and various other warnings related to ventilation can be displayed. For example, it is also possible to cause the display unit 140 to display a warning to urge the user to start ventilation. Specifically, when ventilation of the room 1 is not being performed (for example, before YES is determined in step S101 shown in Fig. 3), it is also possible to detect the indoor condition using the indoor sensor 110, and when it is determined that ventilation is desirable (for example, when the carbon dioxide concentration is equal to or higher than a predetermined threshold value), it is also possible to cause the display unit 140 to display a warning to ventilate.

[0109] Furthermore, the warning is not limited to the warning exemplified in this embodiment (see steps S112 and S114 in FIG. 4), but it is possible to give a notification (warning) to urge the user to stop ventilation at an appropriate timing.

[0110] For example, FIG. 10 shows a modified example of this embodiment. In the example shown in FIG. 10, in addition to the process of the above-mentioned embodiment (see FIG. 3), the processes of steps S107 and S108 are performed. Specifically, after step S104, the control unit 150 judges whether it is desirable to stop ventilation (step S107), and if it is desirable to stop ventilation (YES in step S107), a message or the like urging the resident to close the window 10 is displayed on the display unit 140 (step S108). By such a display, it is possible to urge the resident to stop ventilation. Whether it is desirable to stop ventilation can be appropriately judged, for example, based on the values ​​of each index indicating the state of the room. To give a specific example, it is possible to judge whether ventilation should be stopped by comparing temperature, humidity, etc. with a reference value. In addition to judging based on the values ​​of each index, it is also possible to judge whether ventilation should be stopped according to other factors (for example, outside weather, time of day, etc.).

[0111] As an example, the process of prompting the user to stop ventilation (steps S107 and S108) is performed after step S104 as shown in Fig. 10, but the process can be performed at any other timing. For example, the process can be performed after the process of step S121 shown in Fig. 5 (if NO in step S121) and before step S122.

[0112] Moreover, each process exemplified in the case of performing window opening ventilation (see Figs. 3 to 5) can also be applied in the case of performing mechanical ventilation (see Fig. 8). For example, the process of issuing a warning based on temperature and humidity (steps S111 to S114 in Fig. 4, etc.) can also be executed in the case of performing mechanical ventilation.

[0113] In addition, in the present embodiment, an example has been shown in which the indoor air condition is grasped in association with ventilation of the room 1 using the indoor environment control system 100, but the present invention is not limited to this. That is, it is also possible to display the indoor air condition on the display unit 140 at any time, regardless of whether ventilation of the room 1 is being performed or not.

[0114] In addition, in this embodiment, an example has been shown in which the indoor environment management system 100 is applied to a room 1 provided in a house, but the present invention is not limited to this and can be applied to various buildings (commercial facilities, medical facilities, offices, etc.). [Explanation of symbols]

[0115] 1 room 10. Windows 30 Ventilator 100 Indoor Environmental Control System 110 Indoor Sensor 120 Outdoor Sensor 130 Window opening / closing sensor 140 Display section 150 Control section

Claims

1. A display unit; A first detection unit capable of detecting an indoor air condition according to a plurality of indicators including at least temperature and humidity; A second detection unit capable of detecting an outside air condition according to the plurality of indicators; A control unit that causes the display unit to display the state of the indoor air detected by the first detection unit and the state of the outside air detected by the second detection unit; Equipped with The control unit is A warning regarding ventilation can be displayed on the display unit based on the state of the air in the room, When ventilation in the room is started by opening a window and the temperature of the air in the room is lower than the temperature of the outside air, When the temperature rise in the room from the start of ventilation satisfies a predetermined condition, a first warning is displayed to encourage the use of air conditioning; after displaying the first warning, when the humidity of the indoor air is lower than the humidity of the outside air and the humidity of the indoor air satisfies a predetermined condition, displaying a second warning to prompt the user to stop ventilating the indoor air. Indoor environmental control system.

2. The control unit is The display unit can display the indoor air condition in a graph. The indoor environment control system according to claim 1 .

3. A ventilation start detection unit detects that ventilation in the room has started, The control unit is The display unit can display both the state of the air in the room when ventilation of the room is started and the current state of the air in the room. The indoor environment control system according to claim 1 or 2.

4. A ventilation start detection unit that detects that ventilation in the room has started; A ventilation end detection unit that detects that ventilation of the room has ended; Further comprising: The control unit is The display unit can display both the state of the air in the room when the ventilation of the room is started and the state of the air in the room when the ventilation of the room is ended. The indoor environment control system according to any one of claims 1 to 3.

5. The control unit is The display unit can display a comparison result between the indoor air state and the outdoor air state detected by the second detection unit. The indoor environment control system according to any one of claims 1 to 4.

6. The control unit is It is possible to display a reference value that serves as a guide for understanding the state of the air in the room on the display unit. The indoor environment control system according to any one of claims 1 to 5.

7. The plurality of indicators include: Carbon dioxide concentration included, The indoor environment control system according to any one of claims 1 to 6.

8. The plurality of indicators include: dust concentration and odor, The indoor environment control system according to any one of claims 1 to 7.

Images