Carbon dioxide recovery device and carbon dioxide recovery system

Abstract

To provide a carbon dioxide recovery device and a carbon dioxide recovery system which enable a user to recognize a recovery amount of carbon dioxide when the user visually recognizes medical agents.SOLUTION: A carbon dioxide recovery system 100 comprises: medical agents 11 that chemically react to carbon dioxide to absorb the carbon dioxide, and then change in color; and a case part 12 accommodating the chemical agents 11. The case part 12 includes: an air supply port 12a which supplies air to the chemical agents 11; an exhaust port 12b which exhausts air passing through the chemical agents 11; and a transparent window part 12c formed extending from a portion on the air supply port 12a side of the case part 12 to a portion on the exhaust part 12b side of the case part 12.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a carbon dioxide recovery device and a carbon dioxide recovery system.

Background Art

[0002] In recent years, efforts have been made socially for environmental protection activities. In particular, efforts to recover carbon dioxide, which is considered to be a cause of global warming, have been made by companies and public institutions.

[0003] For example, Patent Document 1 discloses a carbon dioxide recovery amount management system including an absorption member that absorbs carbon dioxide in the air, an information terminal, and a server device. In this system, information read from an information storage unit provided in the absorption member by the information terminal is transmitted from the information terminal to the server device. The server device stores the carbon dioxide recovery amount in a database based on the received information. Further, the absorption member is configured to change its color by absorbing carbon dioxide.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Since the absorption member in the above Patent Document 1 changes its color by absorbing carbon dioxide, a user who observes the absorption member can determine whether the absorption member has absorbed carbon dioxide. However, it is difficult for a person to grasp the degree of change in the overall color of the absorption member, and it is difficult for a person to estimate how much carbon dioxide has been absorbed by the absorption member (agent).

[0006] This disclosure is made to solve the above problems, and an object thereof is to provide a carbon dioxide recovery device and a carbon dioxide recovery system capable of allowing a user to recognize the amount of carbon dioxide recovered by visually recognizing a chemical agent.

Means for Solving the Problems

[0007] In order to achieve the above object, a carbon dioxide recovery device according to a first aspect of the present disclosure, which will be disclosed below, includes a chemical agent that absorbs carbon dioxide and changes in color by chemically reacting with carbon dioxide, and a case portion that houses the chemical agent. The case portion includes an air supply port that supplies air to the chemical agent, an exhaust port that discharges the air that has passed through the chemical agent, and a transparent window portion formed in a portion between the air supply port and the exhaust port in the case portion. The transparent window portion is provided across a portion of the chemical agent from the air supply port side to the exhaust port side.

[0008] A carbon dioxide recovery system according to a second aspect is a carbon dioxide recovery system including a carbon dioxide recovery device according to the first aspect, an information terminal, and a server device that communicates with the information terminal. The information terminal acquires identification information of the carbon dioxide recovery device and the amount of carbon dioxide recovered, associates the identification information with the amount of carbon dioxide recovered, and transmits the amount of carbon dioxide recovered to the server device. The server device stores the amount of carbon dioxide recovered in a database.

Effects of the Invention

[0009] According to the above configuration, by allowing the user to visually recognize the chemical agent, the user can be made to recognize the amount of carbon dioxide recovered.

Brief Description of the Drawings

[0010]

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[0011] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited to the following embodiments, and design changes can be made as appropriate within the scope that satisfies the configuration of the present disclosure. In the following description, the same parts or parts having the same functions are commonly used with the same reference numerals among different drawings, and the repeated description thereof is omitted. In addition, the respective configurations described in the embodiments and modification examples may be combined as appropriate or may be changed. In order to make the description easier to understand, in the drawings referred to below, the configurations are shown in a simplified or schematic manner, or some of the constituent members are omitted.

[0012] [First Embodiment] The carbon dioxide recovery system 100 according to the first embodiment will be described. FIG. 1 is a diagram for explaining a state in which the carbon dioxide recovery device 10 according to the first embodiment is attached to the helmet 20. FIG. 2 is a side view showing the configuration of the carbon dioxide recovery device 10.

[0013] The carbon dioxide recovery system 100 includes a carbon dioxide recovery device 10 that recovers carbon dioxide. The carbon dioxide recovery system 100 is a system that recovers carbon dioxide and manages the recovery amount of the recovered carbon dioxide. In the first embodiment, an example of using the carbon dioxide recovery system 100 for managing a competition in which users compete in the amount of carbon dioxide recovered is shown. That is, the carbon dioxide recovery system 100 according to the first embodiment is a carbon dioxide recovery competition management system.

[0014] (Configuration of Carbon Dioxide Recovery Device 10 and Helmet 20) As shown in FIG. 1, the carbon dioxide recovery device 10 is fixed to a helmet 20 worn by a user P. The carbon dioxide recovery device 10 is disposed, for example, at the top 21 of the helmet 20. Since air flows at the top and in the vicinity of the top of the helmet 20 worn by the moving user P, when the user P wearing the helmet 20 moves, air can be supplied to the chemical agent in the case portion 12. The helmet 20 is provided with a plurality of ventilation holes 22. A fixing belt 30 is disposed in the ventilation holes 22. The carbon dioxide recovery device 10 is attached to the fixing belt 30 and is fixed to the helmet 20 by the fixing belt 30.

[0015] The user P is, for example, a person who engages in a sports competition involving movement while wearing a helmet 20 such as skiing, snowboarding, hang gliding, a bicycle, or a bike. Also, while performing the above sports competition, the user P engages in a competition in which the amount of carbon dioxide recovered is competed. The competition in which the amount of carbon dioxide recovered is competed is, for example, a competition in which a plurality of users P compete and the person with the largest amount of carbon dioxide recovered after the sports competition wins.

[0016] As shown in FIG. 2, the carbon dioxide recovery device 10 includes a chemical agent 11, a case portion 12 that houses the chemical agent 11, and filters 14a and 14b. The chemical agent 11 contains a hydroxide that reacts with carbon dioxide by a chemical reaction. That is, the chemical agent 11 is a member that reacts with carbon dioxide in the air by coming into contact with the air and removes the carbon dioxide in the air. Further, the hydroxide that reacts with carbon dioxide by a chemical reaction contains a calcium-based material. The calcium-based material is, for example, calcium hydroxide. In addition to the method using a chemical reaction, there is a method of physically adsorbing carbon dioxide molecules into the pores of a reaction member without causing a chemical reaction as a method of reacting carbon dioxide. For example, there is a method of adsorbing carbon dioxide molecules to a porous material such as zeolite. In this method of physically adsorbing carbon dioxide molecules to a reaction member, a step of desorbing carbon dioxide from the reaction member and changing the desorbed carbon dioxide into a solid is required, and the number of steps until carbon dioxide is made into a solid increases. On the other hand, according to the configuration of the present embodiment, by using a hydroxide that reacts with carbon dioxide by a chemical reaction, it becomes possible to recover carbon dioxide in a state of a solid (powder) in which carbon dioxide has undergone a chemical change. Thereby, it becomes possible to easily reuse carbon dioxide as compared with the method of physically adsorbing carbon dioxide molecules to a reaction member. Note that the chemical agent 11 may contain a hydroxide other than calcium hydroxide. For example, the chemical agent 11 may contain sodium hydroxide, magnesium hydroxide, ammonium hydroxide, potassium hydroxide, or a silicate mineral such as kaolin.

[0017] Further, by using calcium hydroxide for the chemical agent 11, it becomes possible to generate calcium carbonate by reacting carbon dioxide with calcium hydroxide. The generated calcium carbonate can be used when producing raw materials for various recycled products.

[0018] In addition, the agent 11 contains a dye such as methyl violet. The agent 11 is configured such that the pH changes due to the reacted carbon dioxide, and the color of the dye changes along with the change in pH. For example, when the agent 11 reacts with carbon dioxide, it changes from "white" to "red, purple, or pink". Also, as the agent 11, one that changes from "red or purple" to "white or pink" when reacting with carbon dioxide may be used, or one that changes to a color other than the above may be used. As the dye whose color changes, a dye whose color changes along with a change in pH other than methyl violet may be used.

[0019] In addition, the agent 11 is formed into granular solids. As shown in FIG. 2, a plurality of the agents 11 are arranged in the case portion 12. By forming the agent 11 as a solid, it is difficult for the agent 11 to flow within the case portion 12. Thereby, the agent 11 arranged on the air supply port 12a side sequentially reacts with carbon dioxide.

[0020] As shown in FIG. 2, the case portion 12 includes an air supply port 12a that supplies air to the agent 11, an exhaust port 12b that discharges the air that has passed through the agent 11, and a portion between the air supply port 12a and the exhaust port 12b in the case portion 12, at least a part of which is formed transparently as a transparent window portion 12c. In the first embodiment, the entire side surface of the case portion 12 is formed transparently, and the entire side surface of the case portion 12 constitutes the transparent window portion 12c. The user can visually recognize the agent 11 within the case portion 12 through the transparent window portion 12c.

[0021] The filter 14a is arranged at the air supply port 12a. The filter 14b is arranged at the exhaust port 12b. The filters 14a and 14b are non-woven fabric filters or mesh filters, which prevent dust and dirt from entering the case portion 12 while allowing air to pass through. Also, the filters 14a and 14b can prevent the agent 11 within the case portion 12 from popping out to the outside of the case portion even when the user P moves (exercises).

[0022] In the first embodiment, as shown in FIG. 1, the user P moves in the X1 direction while wearing the helmet 20. That is, the air inlet 12a is arranged at a position in the traveling direction of the user P relative to the exhaust port 12b. Then, as the user P moves, as shown in FIG. 2, air flows in the X2 direction from the air inlet 12a, generating an air current A1. As a result, a reaction occurs with carbon dioxide from the chemical agent 11 arranged on the air inlet 12a side, the color of the chemical agent 11 arranged on the air inlet 12a side changes, and the color of the chemical agent 11 arranged on the exhaust port 12b side changes at the latest time point. Further, the case portion 12 is provided with a display portion 15 indicating the reaction amount of carbon dioxide by the chemical agent 11. The display portion 15 is, for example, a scale. In the case of the example in FIG. 2, when the position where the display portion 15 indicates "5" is the boundary position between the chemical agent 11 whose color has not changed and the chemical agent 11 whose color has changed, the user can recognize that "5 g" of carbon dioxide has been absorbed by the chemical agent 11. Thus, according to the first embodiment, the user can recognize how much of the chemical agent 11 has reacted with carbon dioxide. That is, the user can recognize the recovery amount of carbon dioxide by the chemical agent 11.

[0023] Also, as shown in FIG. 2, a two-dimensional code 13 is attached to the case portion 12. The two-dimensional code 13 is, for example, a QR code (registered trademark). Note that a one-dimensional code (barcode) may be provided instead of the two-dimensional code 13, or an electric circuit capable of storing information such as an IC chip may be provided instead of the two-dimensional code 13. The two-dimensional code 13 can be used, for example, as the "two-dimensional code" described in Japanese Patent No. 7189644.

[0024] (Configuration of Server Device 40 and Information Terminal 50) FIG. 3 is a block diagram showing the configuration of the carbon dioxide recovery system 100. FIG. 4 is a block diagram showing the configuration of the information terminal 50. FIG. 5 is a diagram (1) showing an example of data stored in the database 42b. FIG. 6 is a diagram (2) showing an example of data stored in the database 42b. FIGS. 7 to 10 are diagrams showing example screens displayed on the touch panel 52 of the information terminal 50.

[0025] As shown in FIG. 3, the carbon dioxide recovery system 100 includes a server device 40 and an information terminal 50. The server device 40 is a server that manages the amount of carbon dioxide recovered. The server device 40 includes a control unit 41, a storage unit 42, and a communication unit 43. The control unit 41 includes a processor that executes control processing by executing a program 42a. And the control unit 41 executes each control process of the server device 40. The storage unit 42 includes, for example, a memory (storage circuit). The communication unit 43 is a communication interface and is connected to the network N. Note that the server device 40 may be an on-premises (installed) server device or a server device configured on the cloud. The server device 40 may be configured to store data on the amount of carbon dioxide recovered so as to have a data structure using distributed ledger technology (for example, blockchain technology).

[0026] The storage unit 42 stores a program 42a and a database 42b. The program 42a is a program that causes the processor of the control unit 41 to execute each control process in order to manage a competition for the amount of carbon dioxide recovered.

[0027] As shown in FIG. 4, the information terminal 50 includes a control unit 51, a touch panel 52, a communication unit 53, a reading unit 54, and a storage unit 55. The control unit 51 includes a processor that executes control processing by executing a program. And the control unit 51 executes each control process of the information terminal 50. Also, the touch panel 52 realizes a function of receiving an input operation to the information terminal 50 and a function of displaying an image. The communication unit 53 is a communication interface and is connected to the network N.

[0028] The reading unit 54 is, for example, a camera that captures the two-dimensional code 13. The reading unit 54 is not limited to this, and may include a light emitting unit that irradiates light onto the two-dimensional code 13 and a light receiving unit that detects the reflected light. Further, the reading unit 54 may be provided with a circuit that reads data in the IC chip. The storage unit 55 includes, for example, at least one of an SSD (Solid State Drive) or an HDD (Hard Disk Drive). An application program 55a is stored in the storage unit 55.

[0029] As shown in FIG. 5, in the database 42b, the amount of carbon dioxide recovered is stored in association with the user ID. Further, as shown in FIG. 5, in the database 42b, the user ID is stored in association with the attributes of the user. In the first embodiment, the “attribute” represents which team the user belongs to in the competition.

[0030] As shown in FIG. 6, in the database 42b, the total amount of carbon dioxide recovered is stored in association with the attributes of the user. For example, when the attribute is “Team A”, the total value of the recovery amounts of the user IDs associated with Team A is stored as the total recovery amount in the database 42b.

[0031] As shown in FIG. 7, when the application program 55a is launched by the information terminal 50, a screen for reading the two-dimensional code 13 is displayed on the touch panel 52. For example, before the user P participates in a sports competition, the two-dimensional code 13 is read by the reading unit 54 of the information terminal 50. The information terminal 50 reads the user ID from the two-dimensional code 13. Then, as shown in FIG. 8, the information terminal 50 displays a screen for asking about the user's attributes on the touch panel 52. For example, on the touch panel 52, a question message "Which team do you belong to?" and team options are displayed. FIG. 8 shows a state where "Team A" has been selected by the user. Then, when the information terminal 50 reads the two-dimensional code 13 and the attributes are selected by the user P, it associates the attribute (team name) with the user ID and transmits it to the server device 40.

[0032] The server device 40 stores the user ID associated with the attribute (team name) received from the information terminal 50 in the database 42b.

[0033] Then, when the sports competition and the competition for competing in the amount of carbon dioxide recovered end, the user P checks which scale (display unit 15) the boundary position between the position where the color of the chemical agent 11 of the carbon dioxide recovery device 10 shown in FIG. 2 has changed and the position where the color has not changed corresponds to. Then, the user P launches the application program 55a of the information terminal 50. Then, as shown in FIG. 7, the user P reads the two-dimensional code 13 by the information terminal 50, and then, as shown in FIG. 9, inputs the scale value (the amount of carbon dioxide recovered) into the information terminal 50. The information terminal 50 associates the input scale value (the amount of carbon dioxide recovered) with the information (user ID) of the two-dimensional code 13 and transmits it to the server device 40.

[0034] As shown in FIG. 5, the server device 40 stores in the database 42b the amount of carbon dioxide recovered from the information terminal 50 in a state associated with the user ID. Then, the server device 40 calculates (updates) the total recovered amount associated with the attribute. Then, the server device 40 transmits the total recovered amount to the information terminal 50. For example, as shown in FIG. 10, the information terminal 50 receives the total recovered amount and displays the total recovered amount of the team to which user P belongs on the touch panel 52 of the information terminal 50. Thereby, user P can confirm the total recovered amount of the team. According to the carbon dioxide recovery system 100, it is possible to save the labor of calculating the total recovered amount of the team by the operator of the competition competing for the amount of carbon dioxide recovered, and the labor of notifying each user of the result. As a result, according to the carbon dioxide recovery system 100, it is possible to support the operation of the competition competing for the amount of carbon dioxide recovered.

[0035] [Second Embodiment] Next, with reference to FIGS. 11 to 13, the carbon dioxide recovery system 200 according to the second embodiment will be described. In the second embodiment, a fan 260 is provided in the carbon dioxide recovery device 210. FIG. 11 is a diagram for explaining the configuration of the carbon dioxide recovery system 200 according to the second embodiment. FIG. 12 is a front view for explaining the configuration of the carbon dioxide recovery device 210 according to the second embodiment. FIG. 13 is a rear view for explaining the configuration of the carbon dioxide recovery system 200 according to the second embodiment. Note that the same reference numerals as those in the first embodiment are used for the same configurations as those in the first embodiment, and the description thereof is omitted.

[0036] As shown in FIG. 11, the carbon dioxide recovery system 200 includes a plurality of carbon dioxide recovery devices 210 and an object 220. The plurality of carbon dioxide recovery devices 210 are fixed to the object 220. The object 220 has a shape imitating a tree in the example of FIG. 11. The carbon dioxide recovery system 200 may be used as an ornament or as a teaching material.

[0037] As shown in FIG. 12, a transparent window portion 212c is provided on the front surface of the case portion 212 of the carbon dioxide recovery device 210. The transparent window portion 212c allows the user P to visually recognize the color of the chemical agent 11 inside the case portion 212. The transparent window portion 212c has, for example, a shape imitating a flower.

[0038] As shown in FIG. 13, a transparent window portion 212d is provided at a position between the air inlet 212a and the exhaust port 212b on the back surface of the case portion 212 of the carbon dioxide recovery device 210. Further, a display portion 215 (scale) is provided along the transparent window portion 212d on the case portion 212. The transparent window portion 212d allows the user P to visually recognize the boundary position between the position where the color of the chemical agent 11 has changed and the position where the color of the chemical agent 11 has not changed.

[0039] Also, as shown in FIG. 13, the carbon dioxide recovery device 210 includes a fan 260. The fan 260 sucks air outside the case portion 212 from the air inlet 212a, passes the air through the chemical agent 11 inside the case portion 212, and discharges the air from the exhaust port 212b. Thereby, the air flow A2 shown in FIG. 13 is generated. Note that the other configurations and effects of the second embodiment are the same as those of the first embodiment.

[0040] [Modification of the Second Embodiment] Next, with reference to FIGS. 14 and 15, a carbon dioxide recovery system 300 according to a modification of the second embodiment will be described. In the modification of the second embodiment, the carbon dioxide recovery device 310 is not provided with a fan, and the object 320 is provided with a fan 360. FIG. 14 is a diagram for explaining the configuration of the carbon dioxide recovery system 300 according to the modification of the second embodiment. FIG. 15 is a rear view for explaining the configuration of the carbon dioxide recovery system 300 according to the modification of the second embodiment. Note that the same reference numerals as those in the first embodiment or the second embodiment are used for the same configurations as those in the first embodiment or the second embodiment, and the description thereof is omitted.

[0041] As shown in FIG. 14, the carbon dioxide recovery system 300 includes a plurality of carbon dioxide recovery devices 310 and an object 320. The plurality of carbon dioxide recovery devices 310 are fixed to the object 320. In the example of FIG. 14, the object 320 has a shape imitating a tree. The carbon dioxide recovery system 300 may be used as an ornament or as an educational material.

[0042] As shown in FIG. 15, a transparent window portion 312d is provided at a position between an air inlet 312a and an exhaust port 312b on the back surface of the case portion 312 of the carbon dioxide recovery device 310.

[0043] Also, as shown in FIG. 14, a fan 360 is provided inside the object 320. Inside the object 320, an air guiding path 320a for guiding the air introduced from the outside of the object 320 to each carbon dioxide recovery device 310 is provided. Air is introduced into the air inlet 312a of each carbon dioxide recovery device 310 by an air flow A3 generated by driving the fan 360. Thus, one fan 360 can supply air to the plurality of carbon dioxide recovery devices 310. Note that the other configurations and effects of the modification of the second embodiment are the same as those of the configuration and effects according to the second embodiment.

[0044] [Third Embodiment] Next, with reference to FIGS. 16 to 23, the carbon dioxide recovery system 400 according to the third embodiment will be described. The carbon dioxide recovery device 410 of the fourth embodiment is configured to be able to confirm the discoloration of the chemical agent 11 from the front side. FIG. 16 is a cross-sectional view for explaining the configuration of the carbon dioxide recovery system 300 according to the third embodiment. FIG. 17 is a front view of the carbon dioxide recovery device 410 according to the third embodiment. FIG. 18 is a side view of the carbon dioxide recovery device 410 according to the third embodiment. Note that the same components as those in the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description thereof is omitted.

[0045] As shown in FIG. 16, the carbon dioxide recovery system 400 includes a carbon dioxide recovery device 410. The carbon dioxide recovery device 410 is fixed to the helmet 20 (see FIG. 1) worn by the user P, similar to the carbon dioxide recovery device 10 according to the first embodiment. The carbon dioxide recovery device 410 includes a case portion 412. An air inlet 412a is provided on the front surface 412d, which is the surface of the case portion 412 in the X1 direction.

[0046] The case portion 412 includes a chemical storage chamber 430 that stores the chemical 11 and a ventilation passage 440 that ventilates from the air inlet 412a to the chemical storage chamber 430. As shown in FIGS. 16 and 17, the chemical storage chamber 430 has a cylindrical shape. As shown in FIG. 16, the ventilation passage 440 is formed along the inner surface 433 of the chemical storage chamber 430. The chemical storage chamber 430 includes a storage chamber air inlet 431 that takes in air from the ventilation passage 440. The storage chamber air inlet 431 is provided on the surface of the chemical storage chamber 430 on the back side (X2 direction). And an exhaust port 412b is formed in a part of the side surface 412e, which is the side surface of the case portion 412 and also the side surface of the chemical storage chamber 430. Thus, when the user P moves in the X1 direction, an air flow A4 is generated. The air that enters from the air inlet 412a on the front surface 412d passes through the ventilation passage 440, hits the inner surface 412f on the back side inside the case portion 412, and enters the storage chamber air inlet 431. The air that enters the storage chamber air inlet 431 passes through the chemical 11 and is discharged from the exhaust port 412b. The reaction with carbon dioxide gradually occurs from the chemical 11 arranged at the position in the X2 direction among the plurality of chemicals 11 arranged in the chemical storage chamber 430. For this reason, the chemical 11 arranged at the most X1 - direction position among the plurality of chemicals 11 arranged in the chemical storage chamber 430 reacts with carbon dioxide the latest.

[0047] Further, the case portion 412 includes a guide portion 416 (hood) that guides the air discharged from the exhaust port 412b in the direction of the back surface of the case portion 412 (X2 direction). Thereby, when the user P moves in the X1 direction, it is possible to prevent air from entering the exhaust port 412b. The guide portion 416 has, for example, a wall portion formed at a position in the X1 direction relative to the exhaust port 412b and at a position facing the exhaust port 412b so as to exhaust the air discharged from the exhaust port 412b in the X2 direction. As shown in FIGS. 17 and 18, the guide portion 416 is disposed on each of the four surfaces other than the front and back surfaces of the case portion 412.

[0048] FIGS. 19 to 23 are diagrams for explaining an example of the color change of the chemical agent 11 of the carbon dioxide recovery device 410 according to the third embodiment. As shown in FIG. 17, a part of the transparent window portion 412c is disposed on the front surface of the case portion 412 and on the front surface 412d which is the front surface side of the chemical agent storage chamber 430. Thereby, when the observer visually recognizes from the front side of the case portion 412, the observer can confirm the color change of the chemical agent 11 disposed at the most X1-direction position among the plurality of chemical agents 11 disposed in the chemical agent storage chamber 430. For example, as shown in FIG. 22, when almost all of the chemical agents 11 in the case portion 412 have reacted, as shown in FIG. 23, when visually recognized from the front side of the case portion 412, the chemical agent 11 is visually recognized as having a changed color state. Further, as shown in FIG. 20, even when about 80% of the chemical agents 11 in the case portion 412 have reacted, as shown in FIG. 21, when visually recognized from the front side of the case portion 412, only a part (about half) of the color of the chemical agent 11 is visually recognized as having changed.

[0049] Further, as shown in FIG. 18, the transparent window portion 412c is also disposed on the four surfaces other than the front and back surfaces of the case portion 412. Thereby, as shown in FIGS. 19, 20, and 22, the observer can confirm how many of the plurality of chemical agents 11 have reacted. Other configurations and effects according to the third embodiment are the same as those according to the first embodiment.

[0050] [Modification Example] The above-described embodiments are merely examples for implementing the present disclosure. Therefore, the present disclosure is not limited to the above-described embodiments, and the above-described embodiments can be appropriately modified and implemented without departing from the spirit thereof.

[0051] (1) In the first and third embodiments described above, an example of using the carbon dioxide recovery system for managing a competition in which users compete in the amount of carbon dioxide recovered has been shown. However, the present disclosure is not limited thereto. For example, the carbon dioxide recovery system may be used as a system for recording the amount of carbon dioxide recovered for conducting carbon dioxide emissions trading.

[0052] (2) In the first to third embodiments described above, methyl violet is used as the dye. However, the present disclosure is not limited thereto. That is, any dye whose color changes due to a change in pH may be used instead of methyl violet.

[0053] (3) In the first and third embodiments described above, an example of fixing the carbon dioxide recovery device to the helmet using a fixing belt has been shown. However, the present disclosure is not limited thereto. For example, it may be fixed to the moving body (such as a ski board, snowboard, bicycle, vehicle, aircraft, ship, etc.) itself, or may be arranged at the boundary between the inside and outside of the aircraft and utilize the pressure difference between the outside air pressure of the aircraft and the inside air pressure of the aircraft. Further, the carbon dioxide recovery device may be arranged under the air flow generated by an air conditioner or the like. For example, the carbon dioxide recovery device of the present disclosure may be arranged under the air flow generated by an air conditioner, a ventilation fan, an air conditioning duct, a home generator, or an emergency generator that utilizes a fan or a compressor. Further, the carbon dioxide recovery device of the present disclosure may be arranged inside an aircraft that creates a wind flow by a pressure difference, in a clean room, at the exhaust port or supply port of a negative pressure chamber, or inside the negative pressure chamber.

[0054] (4) In the second embodiment described above, an example of fixing the carbon dioxide recovery device to an object has been shown. However, the present disclosure is not limited thereto. For example, the carbon dioxide recovery device itself may be arranged on the floor or a stand as a figurine.

[0055] (5) In the above-described first and second embodiments, an example in which scales and numbers are provided on the case portion as the display unit has been shown, but the present disclosure is not limited thereto. For example, as the display unit, only one of the scales and numbers may be described on the case portion, or marks other than the scales and numbers may be provided.

[0056] Also, the above-described configuration can be explained as follows.

[0057] The carbon dioxide recovery device according to the first configuration includes a chemical that absorbs carbon dioxide and changes color by chemically reacting with carbon dioxide, and a case portion that houses the chemical. The case portion includes an air supply port that supplies air to the chemical, an exhaust port that discharges the air that has passed through the chemical, and a transparent window portion formed from a portion on the air supply port side of the case portion to a portion on the exhaust port side of the case portion (first configuration).

[0058] According to the above-described first configuration, after the chemical disposed in the portion on the air supply port side of the case portion reacts with carbon dioxide and the color of the chemical changes, the chemical disposed in the portion on the exhaust port side reacts with carbon dioxide and the color of the chemical changes. As a result, the user can recognize how much of the chemical has reacted with carbon dioxide by visually recognizing the position of the boundary between the portion where the color of the chemical has changed and the portion where the color has not changed. That is, the user can recognize the amount of carbon dioxide recovered by the chemical.

[0059] In the first configuration, the case portion may be fixed to a moving object. The air supply port may be disposed at a position in the traveling direction of the moving object that is ahead of the exhaust port (second configuration).

[0060] According to the above-described second configuration, air can be taken in from the air supply port as the moving object moves. As a result, a fan for introducing air into the case portion becomes unnecessary.

[0061] In the second configuration, the moving object may be configured as a helmet worn by a moving person. The case portion may be disposed at or near the top of the helmet (third configuration).

[0062] According to the third configuration described above, since air flows at the top and near the top of the helmet worn by the moving person, when the person wearing the helmet moves, air can be supplied to the drug in the case portion.

[0063] In any one of the first to third configurations, the carbon dioxide recovery device may further include a fan that introduces air into the air supply port or sucks the air in the case portion from the exhaust port (fourth configuration).

[0064] According to the fourth configuration described above, the fan can force air to pass through the drug in the case portion.

[0065] In any one of the first to fourth configurations, the case portion may include a display portion that indicates the reaction amount of carbon dioxide by the drug (fifth configuration).

[0066] According to the fifth configuration described above, the user can recognize the reaction amount of carbon dioxide by visually checking the display portion.

[0067] In any one of the first to fifth configurations, the air supply port may be disposed on a part of the first surface that is the front side surface of the case portion. The case portion may include a drug storage chamber that stores the drug and a ventilation path that ventilates from the air supply port to the drug storage chamber. The drug storage chamber may include a storage chamber air supply port that takes in air from the ventilation path, and the storage chamber air supply port may be provided on the back side surface of the drug storage chamber. The exhaust port may be disposed on a part of the second surface that is the side surface of the case portion and also the side surface of the drug storage chamber. A part of the transparent window portion may be disposed on the first surface and also on the front side surface of the drug storage chamber (sixth configuration).

[0068] According to the above sixth configuration, by the user checking the presence or absence of the color of the drug by looking at the case part from the front, it is possible to check whether the entire drug has reacted or not.

[0069] In the sixth configuration, the case part may include a guide part that guides the air discharged from the exhaust port in the direction of the back surface of the case part (seventh configuration).

[0070] According to the above seventh configuration, it is possible to prevent the air flowing from the front side to the back side from entering through the exhaust port.

[0071] In the sixth or seventh configuration, the drug storage chamber may have a cylindrical shape. The ventilation path may be formed along the inner surface of the drug storage chamber (eighth configuration).

[0072] In the above eighth configuration, the inner surface of the cylindrical drug storage chamber can be used as the ventilation path.

[0073] The carbon dioxide recovery system according to the ninth configuration is a carbon dioxide recovery system including a carbon dioxide recovery device according to the first aspect, an information terminal, and a server device that communicates with the information terminal. The information terminal acquires the identification information of the carbon dioxide recovery device and the carbon dioxide recovery amount, associates the identification information with the carbon dioxide recovery amount, and transmits the carbon dioxide recovery amount to the server device. The server device stores the carbon dioxide recovery amount in a database (ninth configuration).

[0074] According to the above ninth configuration, it is possible to provide a carbon dioxide recovery system that can make the user recognize the carbon dioxide recovery amount by the user visually recognizing the drug.

Explanation of Signs

[0075] 10: Carbon dioxide recovery device, 11: Chemical agent, 12: Case part, 12a: Air inlet, 12b: Exhaust port, 12c: Transparent window part, 13: Two-dimensional code, 14a: Filter, 14b: Filter, 15: Display part, 20: Helmet, 21: Top, 22: Ventilation hole, 30: Fixed belt, 40: Server device, 41: Control part, 42: Memory part, 42a: Program, 42b: Database, 43: Communication part, 50: Information terminal, 51: Control part, 52: Touch panel, 53: Communication part, 54: Reading part, 55: Memory part, 55a: Application program, 100: Carbon dioxide recovery system, 200: Carbon dioxide recovery system, 210: Carbon dioxide recovery device, 212: Case part, 212a: Air inlet, 212b: Exhaust port, 212c: Transparent window part, 212d: Transparent window part, 215: Display part, 220: Object, 260: Fan, 300: Carbon dioxide recovery system, 310: Carbon dioxide recovery device, 312: Case part, 312a: Air inlet, 312b: Exhaust port, 312d: Transparent window part, 320: Object, 320a: Air duct, 360: Fan, 400: Carbon dioxide recovery system, 410: Carbon dioxide recovery device, 412: Case part, 412a: Air inlet, 412b: Exhaust port, 412c: Transparent window part, 412d: Front, 412e: Side, 412f: Inner side, 416: Guide part, 430: Chemical agent storage chamber, 431: Storage chamber air inlet, 433: Inner side, 440: Ventilation path

Claims

1. A chemical agent that reacts with carbon dioxide to absorb the carbon dioxide and cause a color change, and a case part that houses the chemical agent, comprising: The case part has an air supply port for supplying air to the chemical agent, an exhaust port for discharging the air that has passed through the chemical agent, and a transparent window part formed from the part on the air supply port side to the part on the exhaust port side of the case part, a carbon dioxide recovery device.

2. The case part is fixed to a moving object, and the air supply port is disposed at a position in the traveling direction of the moving object that is closer than the exhaust port, the carbon dioxide recovery device according to Claim 1.

3. The moving object is a helmet worn by a moving person, and the case part is disposed at the top or near the top of the helmet, the carbon dioxide recovery device according to Claim 2.

4. The carbon dioxide recovery device according to Claim 1, further comprising a fan for introducing air into the air supply port or sucking air from the exhaust port into the case part.

5. The case part includes a display part indicating the reaction amount of carbon dioxide by the chemical agent, the carbon dioxide recovery device according to any one of Claims 1 to 4.

6. The air supply port is disposed on a part of a first surface that is the front side surface of the case part, and the case part includes a chemical agent storage chamber for storing the chemical agent and a ventilation path for ventilating from the air supply port to the chemical agent storage chamber, the chemical agent storage chamber includes a storage chamber air supply port for taking in air from the ventilation path, the storage chamber air supply port being provided on the back side surface of the chemical agent storage chamber, the exhaust port is disposed on a part of a second surface that is the side surface of the case part and also the side surface of the chemical agent storage chamber, and a part of the transparent window part is disposed on the first surface and also on the front side surface of the chemical agent storage chamber, the carbon dioxide recovery device according to any one of Claims 1 to 4.

7. The case part includes a guide part for guiding the air discharged from the exhaust port in the direction of the back of the case part, the carbon dioxide recovery device according to Claim 6.

8. The chemical agent storage chamber has a cylindrical shape, and the ventilation path is formed along the inner side surface of the chemical agent storage chamber, the carbon dioxide recovery device according to Claim 6.

9. A carbon dioxide recovery system comprising the carbon dioxide recovery device according to Claim 1, an information terminal, and a server device that communicates with the information terminal, wherein the information terminal Obtain the identification information of the carbon dioxide recovery device and the amount of carbon dioxide recovered, Associate the identification information with the amount of carbon dioxide recovered, and transmit the amount of carbon dioxide recovered to the server device, The server device stores the amount of carbon dioxide recovered in a database, and is a carbon dioxide recovery system.

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