Management device

Abstract

A management device is provided that can manage, over a long period of time, the adsorption performance of a chemical substance-adsorbing building material placed in a room of a house where a user lives. [Solution] A management device is attached to the surface of a chemical substance adsorbing building material placed in a room of a house where a user resides, and manages the adsorption performance of the chemical substance adsorbing building material. The management device comprises a hollow housing with an opening through which a portion of the surface of the chemical substance adsorbing building material is exposed, an air intake port formed in the housing for taking in air from within the room into the housing, an exhaust port formed in the housing for discharging air from within the housing into the room, a first sensor for detecting the concentration of chemical substances in the air at the air intake port, a second sensor for detecting the concentration of chemical substances in the air at the exhaust port, and a processing unit for calculating the adsorption performance of the chemical substance adsorbing building material based on the detection values ​​of the first sensor and the second sensor.

Description

[Technical field]

[0001] The present invention relates to a management device for managing the adsorption performance of a chemical substance-adsorbing building material. [Background technology]

[0002] In homes where preventive measures against sick house syndrome have been implemented, chemical substance-adsorbing building materials that have the ability to adsorb formaldehyde and volatile organic compounds (VOCs) emitted from building materials are often used as wall materials, etc. A reduction performance test method using a small chamber method is known as a test for evaluating the adsorption performance of chemical substance-adsorbing building materials.

[0003] Incidentally, the following Patent Document 1 discloses a VOC removal device for purifying exhaust gas from a factory and discharging it to the outside. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2008-302348 A Summary of the Invention [Problem to be solved by the invention]

[0005] The small chamber method for testing reduction performance tests targets brand new chemical substance adsorbing building materials, and therefore cannot evaluate the deterioration of adsorption performance over long-term use spanning several years or even several decades.

[0006] The present invention has been made in consideration of the above circumstances, and aims to provide a management device that is capable of managing, over a long period of time, the adsorption performance of chemical substance adsorption building materials placed in rooms of a user's home. [Means for solving the problem]

[0007] A management device according to a first aspect of the present invention is a management device that is attached to the surface of a chemical substance adsorbing building material placed in a living room of a house in which a user resides, and manages the adsorption performance of the chemical substance adsorbing building material, and comprises a hollow housing with an opening through which a portion of the surface of the chemical substance adsorbing building material is exposed, an air intake port formed in the housing for taking in air from within the living room into the housing, an exhaust port formed in the housing for discharging air from within the housing into the living room, a first sensor that detects the concentration of chemical substances in the air at the air intake port, a second sensor that detects the concentration of chemical substances in the air at the exhaust port, and a processing unit that calculates the adsorption performance of the chemical substance adsorbing building material based on the detection values ​​of the first sensor and the second sensor.

[0008] According to a first aspect, the management device is attached to a surface of a chemical substance adsorbing building material arranged in a room of a house where a user lives. A processing unit included in the management device calculates the adsorption performance of the chemical substance adsorbing building material based on the detection value of the first sensor and the detection value of the second sensor. Therefore, the adsorption performance of the chemical substance adsorbing building material arranged in the room can be managed by the management device over a long period of time.

[0009] In the management device of the first aspect of the present invention, the ratio between the volume inside the housing and the area of ​​the opening is set equal to the ratio between the volume inside the living room and the area of ​​the chemical substance-adsorbing building material.

[0010] According to the second aspect, the effect of removing chemical substances from the air inside the housing by the chemical substance adsorption building material exposed from the opening of the housing can be set to be equal to the effect of removing chemical substances from the air inside the room by the chemical substance adsorption building material placed in the room. As a result, the adsorption performance of the chemical substance adsorption building material placed in the room can be managed with high accuracy by the management device.

[0011] A management device according to a third aspect of the present invention is the first or second aspect, wherein the ventilation rate of the air inside the casing per unit time is set equal to the ventilation rate of the air inside the living room per unit time.

[0012] According to the third aspect, the ventilation rate of the air in the housing can be set equal to the ventilation rate of the air in the living room. As a result, the adsorption performance of the chemical substance-adsorbing building material placed in the living room can be managed with high accuracy by the management device.

[0013] A management device according to a fourth aspect of the present invention is, in the third aspect, further provided with a blower fan that forms an air flow from the air intake port to the exhaust port within the housing, and the processing unit sets the number of ventilations of the air within the housing per unit time by controlling the air flow rate of the blower fan.

[0014] According to the fourth aspect, the number of times the air inside the housing is changed per unit time can be controlled with high precision by adjusting the airflow rate of the blower fan.

[0015] In the management device of the fifth aspect of the present invention, in the third or fourth aspect, the processing unit detects the start and end of ventilation of the room by opening a window based on a change in the detection value of the first sensor, and calculates the number of ventilations of the air in the room per unit time based on the detection value of the first sensor at the start of ventilation of the room, the detection value of the first sensor after the start of window opening ventilation, and the volume of the room.

[0016] According to the fifth aspect, the number of ventilations of air in a room per unit time can be calculated easily and with high accuracy.

[0017] A sixth aspect of the present invention relates to a management device according to any one of the first to fifth aspects, wherein the processing unit calculates a cumulative adsorption amount of chemical substances by the chemical-adsorbing building material based on the detection value of the first sensor, the detection value of the second sensor, the ventilation volume of air within the housing per unit time, and the area of ​​the opening, and calculates a degree of performance degradation of the chemical-adsorbing building material based on the cumulative adsorption amount and a maximum adsorption amount of chemical substances by the chemical-adsorbing building material.

[0018] According to the sixth aspect, the degree of performance degradation of the chemical substance adsorption building material placed in the room can be calculated with high accuracy based on the accumulated adsorption amount and the maximum adsorption amount.

[0019] A seventh aspect of the present invention relates to a management device in the sixth aspect, wherein the chemical substance adsorption building material adsorbs the chemical substance by chemical adsorption, and the processing unit predicts a life span of the chemical substance adsorption building material based on the degree of performance deterioration.

[0020] According to the seventh aspect, the life of a chemical substance-adsorbing building material that is placed in a room and that uses chemical adsorption can be predicted with high accuracy based on the degree of performance degradation.

[0021] An eighth aspect of the present invention relates to a management device of the sixth aspect, wherein the chemical substance-adsorbing building material adsorbs the chemical substance by physical adsorption, and the processing unit predicts the timing of ventilation of the room based on the degree of performance degradation.

[0022] According to the eighth aspect, the timing of ventilation of a room in which a chemical substance adsorption building material that uses physical adsorption is placed can be predicted with high accuracy based on the degree of performance degradation.

[0023] A ninth aspect of the present invention relates to a management device in the sixth aspect, wherein the chemical substance adsorption building material adsorbs the chemical substances by chemical adsorption and physical adsorption, and the processing unit predicts the lifespan of the chemical substance adsorption building material and the timing of ventilation of the room based on the degree of performance degradation.

[0024] According to the ninth aspect, the life of a chemical substance adsorption building material placed in a room can be predicted with high accuracy based on the performance degradation degree, and the timing for ventilation of the room can be predicted with high accuracy based on the performance degradation degree.

[0025] A management device according to a tenth aspect of the present invention, in the ninth aspect, the processing unit detects the start of ventilation of the room based on a change in the detection value of the first sensor, calculates a cumulative emission amount of the chemical substance from the chemical-adsorbing building material based on the detection value of the first sensor and the detection value of the second sensor after ventilation of the room starts, the ventilation volume of the air in the housing per unit time, the area of ​​the opening, and the elapsed time since ventilation of the room started, and calculates the chemical adsorption amount and physical adsorption amount of the chemical substance by the chemical-adsorbing building material based on the cumulative adsorption amount and the cumulative emission amount.

[0026] According to the tenth aspect, the chemical adsorption amount and physical adsorption amount of a chemical substance by a chemical substance-adsorbing building material can be calculated with high accuracy based on the cumulative adsorption amount and cumulative emission amount. Effect of the Invention

[0027] According to the present invention, the adsorption performance of a chemical substance-adsorbing building material placed in a room of a house in which a user lives can be managed over a long period of time. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a diagram showing a schematic diagram of a room 1 of a house in which a user lives. [Diagram 2] FIG. 2 is a diagram illustrating a structure of a management device. [Diagram 3] FIG. 2 is a diagram illustrating a structure of a management device. [Figure 4] FIG. 2 is a diagram illustrating a structure of a management device. [Diagram 5] FIG. 2 is a diagram illustrating a structure of a management device. [Figure 6] FIG. 2 is a diagram illustrating a structure of a management device. [Figure 7] FIG. 2 is a diagram illustrating a structure of a management device. [Figure 8] FIG. 2 is a diagram illustrating a simplified functional configuration of a management device. [Figure 9] 10 is a flowchart showing a process executed by a processing unit in an initial setting. [Figure 10]FIG. 13 is a diagram illustrating a simplified example of setting information. [Figure 11] 13 is a flowchart showing a process executed by a processing unit for setting the volume of air sent by a blower fan 26 during ventilation by opening a window. [Figure 12] 10 is a flowchart showing a process executed by a processing unit with respect to management of adsorption performance of a chemical substance-adsorbing building material having chemical adsorption performance. [Figure 13] 11 is a flowchart showing a first example of a process executed by the processing unit regarding management of adsorption performance of a chemical substance-adsorbing building material having physical adsorption performance. [Figure 14] FIG. 13 is a diagram showing a predicted example of ventilation timing for opening windows for ventilation. [Figure 15] 13 is a flowchart showing a second example of a process executed by the processing unit regarding management of adsorption performance of a chemical substance-adsorbing building material having physical adsorption performance. [Figure 16] FIG. 13 is a diagram showing a predicted example of ventilation timing for opening windows for ventilation. [Figure 17] FIG. 13 is a diagram showing an example of calculation of the chemical adsorption amount and the physical adsorption amount for a chemical substance-adsorbing building material. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In addition, elements with the same reference numerals in different drawings indicate the same or corresponding elements.

[0030] FIG. 1 is a diagram showing a typical room 1 of a house in which a user lives. Measures to prevent sick house syndrome are taken in the house, and a chemical substance-adsorbing building material 2 having the ability to adsorb formaldehyde and volatile organic compounds (VOCs) emitted from building materials is used as a wall material or the like on one wall in the room 1. The chemical substance-adsorbing building material 2 may adsorb VOCs by chemical adsorption, may adsorb VOCs by physical adsorption, or may adsorb VOCs by both chemical adsorption and physical adsorption. A management device 10 for managing the adsorption performance of the chemical substance-adsorbing building material 2 is attached to the surface of the chemical substance-adsorbing building material 2. The room 1 has a window 3. A user can open the window 3 to ventilate the air in the room 1.

[0031] 2 to 7 are diagrams showing a schematic structure of the management device 10. The directions of each diagram are indicated by an XYZ orthogonal coordinate system in the diagram. The management device 10 includes a hollow housing 21 having an opening 23 through which a part of the surface of the chemical substance-adsorbing building material 2 is exposed.

[0032] 2 shows the front structure as viewed in the -Z direction. A display unit 22 having a touch panel function is disposed on the front of the housing 21. The display unit 22 is configured using a liquid crystal display, an organic EL display, or the like. Instead of the display unit 22 having a touch panel function, a display screen of the user's smartphone, or the like, may be substituted for the display unit 22 of the management device 10 by implementing a communication function with a smartphone, or the like, carried by the user, in the management device 10. A controller 20 is disposed inside the housing 21. The controller 20 is configured using a microcontroller, or the like.

[0033] 3(A) shows the rear structure viewed in the +Z direction, and FIG. 3(B) shows the rear structure viewed in the -Z direction. An opening 23 is formed on the rear of the housing 21, through which part of the surface of the chemical substance adsorption building material 2 is exposed. The area of ​​the opening 23 can be set arbitrarily by preparing a plurality of frame-shaped covers of different sizes and attaching one of the frame-shaped covers to the opening 23. Alternatively, the area of ​​the opening 23 can be set arbitrarily by blocking part of the opening 23 with adhesive tape. The ratio of the volume inside the housing 21 to the area of ​​the opening 23 is set to be equal to the ratio of the volume inside the living room 1 to the area of ​​the chemical substance adsorption building material 2.

[0034] 4 shows the top structure as viewed in the -Y direction. An air supply port 24 having a plurality of slits is formed on the top surface of the housing 21 for taking in air from within the living room 1 into the housing 21.

[0035] 5 shows the bottom structure as viewed in the +Y direction. An exhaust port 25 having a plurality of slits is formed on the bottom surface of the housing 21 for discharging the air inside the housing 21 into the living room 1.

[0036] Fig. 6 shows the side structure viewed in the +X direction, and Fig. 7 shows the internal structure viewed in the +X direction. A first sensor 27 for detecting the VOC concentration in the air near the air intake port 24 and a second sensor 28 for detecting the VOC concentration in the air near the air exhaust port 25 are disposed in the housing 21. The detection values ​​of the first sensor 27 and the second sensor 28 are input to the controller 20. Also disposed in the housing 21 is a blower fan 26 for forming an air flow from the air intake port 24 to the air exhaust port 25 within the housing 21.

[0037] The amount of air blown, which corresponds to the rotation speed of blower fan 26, is controlled by controller 20. Controller 20 sets the number of ventilation cycles of air inside housing 21 per unit time to be equal to the number of ventilation cycles of air inside living room 1 per unit time. A 24-hour ventilation system that constantly ventilates the air inside the house at a constant ventilation rate is installed in the house.

[0038] During normal times when the user is not opening the windows for ventilation, the controller 20 sets the ventilation rate of the air inside the housing 21 per unit time to be equal to the ventilation rate corresponding to the ventilation volume for 24 hours.

[0039] When the user is performing window opening ventilation, the controller 20 sets the ventilation rate of the air inside the housing 21 per unit time to be equal to the ventilation rate corresponding to the ventilation volume of the window opening ventilation.

[0040] 8 is a diagram showing a simplified functional configuration of the management device 10. The management device 10 includes a controller 20, an input unit 29, a display unit 22, a first sensor 27, a second sensor 28, and a blower fan 26. The input unit 29 is configured as a touch panel function of the display unit 22.

[0041] The controller 20 has a processing unit 31, a storage unit 32, and a communication unit 33. The processing unit 31 is configured using a processor such as a CPU. The storage unit 32 is configured using a HDD, an SSD, a semiconductor memory, or the like. The communication unit 33 is configured using a communication module compatible with the communication standards for the first sensor 27, the second sensor 28, and the blower fan 26.

[0042] The storage unit 32 stores the setting information 41 and the measurement information 42. The setting information 41 and the measurement information 42 may be a database including a plurality of records.

[0043] 9 is a flowchart showing the process executed by the processing unit 31 in the initial setting. The initial setting is executed when the system is started for the first time or when the chemical substance adsorption building material 2 is replaced.

[0044] First, in step SP11, the processing unit 31 acquires input information input by the operator from the input unit 29. The input information includes information on the type of the chemical substance adsorbing building material 2, which indicates whether or not the chemical adsorption and physical adsorption properties are present. The input information also includes information indicating the maximum adsorption amount according to the area of ​​the chemical substance adsorbing building material 2 and the amount of components contained in the chemical adsorbent. When the chemical substance adsorbing building material 2 has both chemical adsorption and physical adsorption properties, the input information includes information indicating the individual maximum adsorption amounts of chemical adsorption and physical adsorption. The input information also includes information indicating the date of start of use of the chemical substance adsorbing building material 2. The date of start of use may be the date of completion of construction of the chemical substance adsorbing building material 2. The input information also includes information indicating the volume of the living room 1. The input information also includes information indicating the constant ventilation amount of the 24-hour ventilation system of the house.

[0045] Next, in step SP12, the processing section 31 creates the setting information 41 based on the input information acquired in step SP11.

[0046] 10 is a diagram showing a simplified example of the setting information 41. In the case where the chemical substance adsorbing building material 2 has a chemical adsorption performance, the setting information 41 includes information indicating the maximum amount of chemical adsorption and information indicating the date of start of use of the chemical substance adsorbing building material 2. In the case where the chemical substance adsorbing building material 2 has a physical adsorption performance, the setting information 41 includes information indicating the maximum amount of physical adsorption. The setting information 41 also includes information indicating the volume of the living room 1. The setting information 41 also includes information indicating the airflow rate of the blower fan 26, which corresponds to the constant ventilation rate of the 24-hour ventilation system of the house.

[0047] FIG. 11 is a flowchart showing the process executed by the processor 31 for setting the air volume of the blower fan 26 during ventilation by opening the window.

[0048] First, in step SP21, the processing unit 31 periodically acquires the detection value of the first sensor 27, and judges whether or not ventilation by opening a window has started in the room 1 based on a change in the detection value of the first sensor 27. The processing unit 31 detects that ventilation by opening a window has started when the detection value of the first sensor 27 drops by a predetermined value or more within a predetermined time.

[0049] When the start of opening a window for ventilation is not detected (step SP21: NO), the processing unit 31 repeatedly executes the process of step SP21.

[0050] If the start of window opening ventilation is detected (step SP21: YES), then in step SP22, the processing unit 31 acquires the detection value of the first sensor 27 at the start of window opening ventilation. The start of window opening ventilation may be the time immediately before the detection value of the first sensor 27 drops by more than the above-mentioned predetermined value. The processing unit 31 calculates the amount of VOCs generated in the room 1 at the start of window opening ventilation using the following formula (1).

[0051] VOC emission rate [μg / h] = detection value of the first sensor 27 at the start of ventilation by opening the window [μg / m 3 ] × ventilation volume by the 24-hour ventilation system in room 1 [m 3 / h]···(1)

[0052] Next, in step SP23, the processor 31 calculates the ventilation amount of the room 1 by opening the window for ventilation, using the following formula (2).

[0053] Ventilation volume [m 3 / h] = VOC emission amount [μg / h] ÷ detection value of the first sensor 27 that has dropped by more than a predetermined value after the start of ventilation by opening the window [μg / m 3 ]···(2)

[0054] Next, in step SP24, the processor 31 calculates the ventilation rate of the room 1 by opening the window for ventilation, using the following formula (3).

[0055] Room 1 ventilation rate [times / h] = ventilation volume [m 3 / h]÷Volume of Room 1 [m3 ]···(3)

[0056] During ventilation with the window open, if the detection value of the first sensor 27 is zero or very small, the processing unit 31 may set the ventilation rate of the room 1 to an arbitrary maximum value (for example, 5 times / h).

[0057] Next, in step SP25, the processing unit 31 sets the airflow rate of the blower fan 26 so that the ventilation rate of the air inside the housing 21 is equal to the ventilation rate of the living room 1. The processing unit 31 stores information indicating the set airflow rate of the blower fan 26 in the memory unit 32.

[0058] Next, in step SP26, processing unit 31 periodically acquires the detection value of first sensor 27, and determines whether or not there has been a change in the state of open window ventilation based on the change in the detection value of first sensor 27. The state of open window ventilation changes based on a change in the number of open windows, a change in external wind speed, etc. If the detection value of first sensor 27 within a certain period of time changes by a predetermined value or more, processing unit 31 detects that there has been a change in the state of open window ventilation, and executes the processes from step SP23 onwards.

[0059] If there is no change in the state of open window ventilation (step SP26: NO), then in step SP27, the processing unit 31 periodically acquires the detection value of the first sensor 27 and determines whether or not the open window ventilation of the room 1 has ended based on the change in the detection value of the first sensor 27. The processing unit 31 detects that the open window ventilation has ended when the detection value of the first sensor 27 within a certain period of time increases by a predetermined value or more.

[0060] If the end of opening the window for ventilation is not detected (step SP27: NO), the processing unit 31 executes the processes from step SP26 onwards.

[0061] If the end of open window ventilation is detected (step SP27: YES), then in step SP28, the processing unit 31 returns the setting of the air volume of the blower fan 26 to the air volume for 24-hour ventilation.

[0062] 12 is a flowchart showing the process executed by the processing unit 31 for managing the adsorption performance of the chemical substance adsorption building material 2 having chemical adsorption performance. In the following description, the management device 10 calculates the adsorption performance of the chemical substance adsorption building material 2 in terms of the ventilation volume conversion value [m 3 / (h m 2 )] is used for management, but is not limited to this example.

[0063] First, in step SP31, the processing section 31 acquires the setting information 41 by reading it out from the storage section 32.

[0064] Next, in step SP32, the processing unit 31 calculates the cumulative usage time of the chemical substance adsorption building material 2 from the previous measurement.

[0065] Next, in step SP33, the processing section 31 acquires the detection value of the first sensor 27.

[0066] Next, in step SP34, the processing section 31 acquires the detection value of the second sensor .

[0067] Next, in step SP35, the processing section 31 calculates the accumulated amount of adsorption since the previous measurement by the following formula (4).

[0068] Cumulative adsorption amount [μg / m 2 ]=(detection value of first sensor 27 [μg / m 3 ]-detection value of second sensor 28 [μg / m 3 ]) × ventilation volume of enclosure 21 [m 3 / h] × elapsed time [h] ÷ area of ​​opening 23 [m 2 ]···(4)

[0069] The ventilation volume in equation (4) is the ventilation volume for 24-hour ventilation or the ventilation volume for open window ventilation.

[0070] The processing unit 31 adds the cumulative adsorption amount since the previous measurement, which is calculated for the current measurement, to the database of the measurement information 42. The processing unit 31 also calculates the cumulative adsorption amount since the start of use of the chemical substance adsorption building material 2 by adding up all the cumulative adsorption amounts included in the database of the measurement information 42.

[0071] Next, in step SP36, the processing unit 31 calculates the ratio of the accumulated adsorption amount from the start of use to the maximum adsorption amount of the chemical substance adsorbing building material 2 as the performance degradation degree of the chemical substance adsorbing building material 2.

[0072] Next, in step SP37, the processing unit 31 predicts the life of the chemical substance adsorbing building material 2 at which the above ratio becomes "1" based on the time-series change in the performance deterioration degree of the chemical substance adsorbing building material 2.

[0073] FIG. 13 is a flow chart showing a first example of the processing executed by the processing unit 31 with regard to management of the adsorption performance of the chemical substance adsorption building material 2 having physical adsorption performance.

[0074] In the chemical substance adsorption building material 2 having the performance of physical adsorption, the physically adsorbed VOCs can be dispersed by opening the windows to ventilate, thereby recovering the adsorption performance of the chemical substance adsorption building material 2. When the physically adsorbed VOCs are completely dispersed, the adsorption performance of the chemical substance adsorption building material 2 is reset to a new condition.

[0075] The processing unit 31 calculates the cumulative amount of emission from the start of opening the window for ventilation by the following formula (5).

[0076] Cumulative emission amount [μg / m 2 ]=(detection value of second sensor 28 [μg / m 3 ]-detection value of the first sensor 27 [μg / m 3 ]) × ventilation volume of enclosure 21 [m 3 / h] × elapsed time from the start of ventilation by opening the window [h] ÷ area of ​​opening 23 [m 2 ]···(5)

[0077] The ventilation volume in equation (5) is the ventilation volume when windows are opened.

[0078] First, in step SP31, the processing section 31 acquires the setting information 41 by reading it out from the storage section 32.

[0079] Next, in step SP32, the processing unit 31 calculates the cumulative usage time of the chemical substance adsorption building material 2 from the previous measurement.

[0080] Next, in step SP33, the processing section 31 acquires the detection value of the first sensor 27.

[0081] Next, in step SP34, the processing section 31 acquires the detection value of the second sensor .

[0082] Next, in step SP35, the processing unit 31 calculates the cumulative amount of adsorption since the previous measurement using the above formula (4). The processing unit 31 subtracts the ventilation volume equivalent of the cumulative amount of emission from the previous measurement to the current measurement from the cumulative amount of adsorption since the previous measurement calculated using the above formula (4).

[0083] The processing unit 31 adds the cumulative adsorption amount since the previous measurement calculated for the current measurement to the database of the measurement information 42. The processing unit 31 also calculates the cumulative adsorption amount since the previous reset of the chemical substance adsorption building material 2 by summing up the cumulative adsorption amounts since the previous reset included in the database of the measurement information 42.

[0084] Next, in step SP36, the processing unit 31 calculates the ratio of the accumulated adsorption amount since the previous reset to the maximum adsorption amount of the chemical substance adsorbing building material 2 as the performance deterioration degree of the chemical substance adsorbing building material 2.

[0085] Next, in step SP41, the processing unit 31 predicts the timing for ventilation of the room 1 by opening a window, based on the time-series change in the performance degradation degree of the chemical substance adsorption building material 2, as the date when the performance degradation degree will be equal to or greater than the threshold value Th1.

[0086] Fig. 14 is a diagram showing an example of a predicted timing for ventilation by opening a window. In the example shown in Fig. 14, ventilation by opening a window has not been performed even once since the previous reset, and the performance degradation level of the chemical substance adsorption building material 2 is increasing in proportion to the elapsed time. The processing unit 31 predicts the ventilation timing for opening a window for ventilation of the room 1 by identifying the date on which the performance degradation level becomes equal to or greater than the threshold value Th1.

[0087] FIG. 15 is a flow chart showing a second example of the processing executed by the processing unit 31 with regard to management of the adsorption performance of the chemical substance adsorption building material 2 having physical adsorption performance.

[0088] The processing in steps SP31 to SP35 is similar to that in the first example shown in FIG.

[0089] Next, in step SP51, the processing unit 31 calculates the ventilation volume conversion value of the adsorption performance value of the chemical substance adsorption building material 2 by the following formula (6).

[0090] Ventilation volume equivalent value [m 3 / (h m 2 )]={(detection value of the first sensor 27 [μg / m 3 ]÷detection value of second sensor 28 [μg / m 3 ])-1} × ventilation volume of the enclosure 21 [m 3 / h]÷Area of ​​opening 23 [m 2 ]···(6)

[0091] The ventilation volume in equation (6) is the ventilation volume for 24-hour ventilation or the ventilation volume for open window ventilation.

[0092] Next, in step SP42, the processing unit 31 predicts the timing for ventilation of the room 1 by opening a window, based on the time-series change in the adsorption performance value of the chemical substance-adsorbing building material 2, as the date when the adsorption performance value will be equal to or lower than the threshold value Th2.

[0093] Fig. 16 is a diagram showing an example of a predicted ventilation timing for opening a window for ventilation. In the example shown in Fig. 16, no ventilation has been performed by opening a window since the previous reset, and the adsorption performance value of the chemical substance adsorption building material 2 has decreased in proportion to the elapsed time. The processing unit 31 predicts the ventilation timing for opening a window for ventilation of the room 1 by identifying the date when the adsorption performance value will be equal to or less than the threshold value Th2.

[0094] In addition, when the chemical substance adsorbing building material 2 has both chemical adsorption and physical adsorption properties, the processing unit 31 may predict both the lifespan of the chemical substance adsorbing building material 2 and the timing of ventilation of the room 1 based on the degree of performance deterioration (or the adsorption performance value) of the chemical substance adsorbing building material 2.

[0095] 17 is a diagram showing an example of calculation of the chemical adsorption amount and the physical adsorption amount for the chemical substance adsorption building material 2. Time T0 indicates the previous reset timing, time T1 indicates the start timing of the current window opening ventilation, and time T2 indicates the current reset timing due to the current window opening ventilation.

[0096] The processing unit 31 calculates the amount of chemical adsorption accumulated between times T0 and T2 as the accumulated amount of adsorption (Q2-Q1) obtained by subtracting the accumulated amount of adsorption Q0 at time T0 from the accumulated amount of adsorption Q2 at time T2. The difference between the accumulated amount of adsorption Q2 and the accumulated amount of adsorption Q1 corresponds to the accumulated amount of emission.

[0097] Moreover, the processing unit 31 calculates the amount of physical adsorption accumulated between times T0 and T1 as the accumulated amount of adsorption (Q1-Q2) obtained by subtracting the accumulated amount of adsorption Q2 at time T2 from the accumulated amount of adsorption Q1 at time T1.

[0098] According to this embodiment, the management device 10 is attached to the surface of the chemical substance adsorbing building material 2 placed in a room 1 of a house where a user resides. A processing unit 31 included in the management device 10 calculates the adsorption performance of the chemical substance adsorbing building material 2 based on the detection value of the first sensor 27 and the detection value of the second sensor 28. Therefore, the adsorption performance of the chemical substance adsorbing building material 2 placed in the room 1 can be managed by the management device 10 over a long period of time.

[0099] Furthermore, according to this embodiment, the effect of removing chemical substances in the air inside the housing 21 by the chemical substance adsorption building material 2 exposed from the opening 23 of the housing 21 can be set to be equal to the effect of removing chemical substances in the air inside the room 1 by the chemical substance adsorption building material 2 placed in the room 1. As a result, the adsorption performance of the chemical substance adsorption building material 2 placed in the room 1 can be managed with high accuracy by the management device 10.

[0100] Moreover, according to this embodiment, the ventilation rate of the air inside the housing 21 can be set equal to the ventilation rate of the air inside the living room 1. As a result, the adsorption performance of the chemical substance adsorption building material 2 placed inside the living room 1 can be managed with high accuracy by the management device 10.

[0101] Moreover, according to this embodiment, the number of times the air inside the housing 21 is ventilated per unit time can be controlled with high precision by adjusting the airflow rate of the blower fan 26.

[0102] Moreover, according to this embodiment, the ventilation rate of the air in the room 1 per unit time can be calculated easily and with high accuracy.

[0103] Moreover, according to this embodiment, the degree of performance degradation of the chemical substance adsorption building material 2 placed in the room 1 can be calculated with high accuracy based on the accumulated adsorption amount and the maximum adsorption amount.

[0104] Furthermore, according to this embodiment, the life of the chemical substance adsorption building material 2 arranged in the living room 1 by chemical adsorption can be predicted with high accuracy based on the degree of performance degradation.

[0105] Moreover, according to this embodiment, the timing of ventilation of the room 1 in which the chemical substance adsorption building material 2 that uses physical adsorption is placed can be predicted with high accuracy based on the degree of performance degradation.

[0106] Furthermore, according to this embodiment, the lifespan of the chemical substance adsorption building material 2 placed in the room 1 can be predicted with high accuracy based on the degree of performance deterioration, and the timing for ventilation of the room 1 can be predicted with high accuracy based on the degree of performance deterioration.

[0107] Furthermore, according to this embodiment, the chemical adsorption amount and physical adsorption amount of the chemical substance by the chemical substance adsorption building material 2 can be calculated with high accuracy based on the cumulative adsorption amount and cumulative emission amount. [Explanation of symbols]

[0108] 1 living room 2 Chemical adsorption building materials 3. Windows 10 Management device 21 Case 23 Opening 24 Air supply port 25 Exhaust port 26 Blower fan 27 First Sensor 28 Second Sensor 31 Processing section 41 Setting information

Claims

1. A management device that is attached to a surface of a chemical substance-adsorbing building material arranged in a room of a house inhabited by a user and manages the adsorption performance of the chemical substance-adsorbing building material, a hollow housing having an opening through which a part of the surface of the chemical substance adsorption building material is exposed; an air intake port formed in the housing for taking in air from within the living room into the housing; an exhaust port formed in the housing and configured to exhaust air from within the housing into the living room; a first sensor for detecting a concentration of a chemical substance in the air at the air inlet; a second sensor for detecting a concentration of a chemical substance in the air at the exhaust port; A processing unit that calculates the adsorption performance of the chemical substance adsorption building material based on the detection value of the first sensor and the detection value of the second sensor; A management device comprising:

2. The ratio of the volume inside the housing to the area of ​​the opening is set to be equal to the ratio of the volume inside the living room to the area of ​​the chemical substance adsorption building material. The management device according to claim 1 .

3. The ventilation rate of the air in the housing per unit time is set to be equal to the ventilation rate of the air in the living room per unit time. The management device according to claim 1 .

4. a blower fan that forms an air flow from the air intake port to the air exhaust port inside the housing, The management device according to claim 3 , wherein the processing unit sets a ventilation rate of the air inside the housing per unit time by controlling an air volume of the blower fan.

5. The processing unit includes: Detecting the start and end of ventilation of the room by opening a window based on a change in the detection value of the first sensor; Calculating an air change rate per unit time of the air in the living room based on a detection value of the first sensor at a ventilation start point of the living room, a detection value of the first sensor after the start of ventilation by opening a window, and a volume of the living room. The management device according to claim 3 .

6. The processing unit includes: calculating an accumulated amount of adsorption of the chemical substance by the chemical substance adsorption building material based on the detection value of the first sensor, the detection value of the second sensor, the ventilation amount of the air in the housing per unit time, and an area of ​​the opening; calculating a performance deterioration degree of the chemical substance adsorbing building material based on the cumulative adsorption amount and the maximum adsorption amount of the chemical substance by the chemical substance adsorbing building material; The management device according to claim 1 .

7. The chemical substance-adsorbing building material adsorbs the chemical substance by chemical adsorption, The processing unit predicts a life span of the chemical substance adsorption building material based on the performance deterioration degree. The management device according to claim 6.

8. The chemical substance-adsorbing building material adsorbs the chemical substance by physical adsorption, The processing unit predicts a timing for ventilation of the room based on the performance deterioration degree. The management device according to claim 6.

9. The chemical substance-adsorbing building material adsorbs the chemical substance by chemical adsorption and physical adsorption, The processing unit predicts a lifespan of the chemical substance adsorption building material and a timing for ventilation of the room based on the performance deterioration degree. The management device according to claim 6.

10. The processing unit includes: Detecting the start of ventilation of the room based on a change in the detection value of the first sensor; calculating a cumulative emission amount of the chemical substance from the chemical substance adsorption building material based on the detection value of the first sensor, the detection value of the second sensor, the ventilation amount of the air in the housing per unit time, the area of ​​the opening, and the elapsed time from the start of ventilation of the room, after the start of ventilation of the room; calculating the chemical adsorption amount and the physical adsorption amount of the chemical substance by the chemical substance adsorption building material based on the cumulative adsorption amount and the cumulative emission amount; The management device according to claim 9.

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