JP2016120475A - Carbon dioxide absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbon dioxide absorber capable of reliably preventing the absorption capacity of a carbon dioxide absorbent from deteriorating. A carbon dioxide absorber 10 is provided with a carbon dioxide absorbent 11 in an internal space S1, and communicates with an opening 12a, and a CO2 canister 12 having an intake side opening 12a and an exhaust side opening 12b. A flow path forming section 13 that forms a flow path 13b that communicates with the external space S2, a flow path forming section that communicates with the opening 12b, and that forms a flow path 14b that communicates with the external space S2, and a flow path forming section. 13 and a blower 15 for blowing air toward the opening 12a, and in the flow path forming unit 13, provided between the blower 15 and the opening 12a, and a flow path 13b between the external space S2 and the internal space S1. A closing portion 16 that is closed by the liquid 19, and a closing portion 18 that is provided in the flow path forming portion 14 and closes the flow path 14b between the external space S2 and the internal space S1 by the liquid 19; Is provided. [Selection] Figure 2

Description

  The present invention relates to a carbon dioxide absorber.

  By breathing, humans consume oxygen taken from the atmosphere and emit carbon dioxide. Therefore, when a large number of people are housed in a room that is blocked from outside air, the oxygen concentration in the room space decreases and the carbon dioxide concentration increases over time due to the breathing of the housed people. Resulting in.

  At present, the oxygen concentration in the atmosphere is about 20.95%, and the carbon dioxide concentration is about 400 ppm, and the oxygen deficiency prevention regulations stipulate that the oxygen concentration in the air is less than 18% as oxygen deficiency. Yes. In addition, according to the recommended value of the Japan Society for Occupational Health, the allowable concentration of carbon dioxide is 5000 ppm.

  Usually, in order to maintain a room space that is blocked from outside air so as not to be deficient in oxygen, the oxygen concentration is increased by supplying oxygen to the room space. On the other hand, in order to maintain the carbon dioxide concentration in the living room so as not to exceed the allowable concentration, the carbon dioxide concentration is lowered by removing the carbon dioxide in the living room.

However, when the volume of the living room is large, it may not be necessary to supply oxygen depending on the number of residents and the time of residence. For example, if the volume of a room is 1000 m ³ and the initial values of the oxygen concentration and carbon dioxide concentration in the room space are equal to the concentration in the atmosphere, 30 people work for 10 hours (energy metabolism rate) in the room. Assuming that the physical activity intensity is about 2: walking at about 3 km / h, oxygen consumption is about 0.6 L / min, carbon dioxide emission is about 0.55 L / min), the oxygen concentration in the living room is about 19 However, oxygen supplementation is not particularly necessary in this case. On the other hand, the carbon dioxide concentration in the living room rises to about 1.0%. In this case, in order to maintain the living room below the allowable concentration in a sufficiently safe state, the carbon dioxide in the living room space is removed. Must.

  Conventionally, as a method for removing carbon dioxide in such a room space, an alkali agent has been used because the structure of the apparatus can be simplified and the mass and volume of the apparatus can be reduced. The chemical absorption method used is generally adopted. As such an alkaline agent, a granule mainly composed of lithium hydroxide, calcium hydroxide, barium hydroxide or the like is often used (see, for example, Patent Document 1).

In addition, a carbon dioxide absorption device that employs a chemical absorption system sucks in the air in the living room space from the air inlet, the CO ₂ canister in which the carbon dioxide absorbent is stored, and sends the sucked air to the CO ₂ canister. And an exhaust port for discharging the air that has passed through the CO ₂ canister to the living room space. The carbon dioxide absorption device sucks air from the living room space by operating the blower, guides the sucked air to the CO ₂ canister, and sucks it through the carbon dioxide absorbent layer space stored in the CO ₂ canister. It operates to remove carbon dioxide in the air and exhaust the air from which the carbon dioxide has been removed to the living room space. This suction and discharge are performed continuously or intermittently to remove carbon dioxide in the living room space and lower the carbon dioxide concentration in the living room space.

In the carbon dioxide absorber configured as described above, if the CO ₂ canister in which the carbon dioxide absorbent is stored is left unsealed, the absorption capacity of the carbon dioxide absorbent deteriorates without operating the blower. Resulting in. This is because air in and out of the air intake and exhaust vents due to atmospheric pressure fluctuations, temperature changes, and humidity changes in the environment where the carbon dioxide absorber is installed, This is because the absorbent is dried and the water content is reduced.

Therefore, in order to prevent deterioration of the carbon dioxide absorber, conventionally, the carbon dioxide absorber, the valve for sealing the CO ₂ canister, and piping and CO ₂ canister between the blower and the CO ₂ canister An electric butterfly valve, an electric ball valve, or the like is used as such a valve.

JP 2011-125763 A

In a conventional carbon dioxide absorber, the restriction of the discharge pressure of the blower, in order to suppress the pressure loss, the tube diameter of the pipe between the pipe and the CO ₂ canister and the exhaust port between the CO ₂ canister is large (e.g., For example, a diameter of 30 mm or 100 mm). Therefore, the seal length of the valve portion by the valve is also increased. For this reason, when powder etc. adhere to a seal part, there is a possibility that sealing nature may be spoiled. In this case, there is a possibility that the absorption capability of the carbon dioxide absorbent may deteriorate due to the air entering and exiting from the minute gap.

  The objective of this invention is providing the carbon dioxide absorber which can prevent reliably that the absorption capability of a carbon dioxide absorber will deteriorate.

The present invention is a carbon dioxide absorber that has a carbon dioxide absorbent, sucks air from an external space, and discharges air that has absorbed carbon dioxide by the carbon dioxide absorbent to the external space,
An absorbent containing container in which an internal space is formed, an intake side opening and an exhaust side opening connected to the internal space are formed, and the carbon dioxide absorbent is contained in the internal space;
An intake-side flow path forming portion that communicates with the intake-side opening and forms a flow path that communicates with an external space;
An exhaust side flow path forming portion that communicates with the exhaust side opening and forms a flow path that communicates with an external space;
Blower means provided in the intake side flow path forming part or the exhaust side flow path forming part,
An intake side closing part that closes the flow path formed by the intake side flow path forming part with a liquid;
A carbon dioxide absorption device comprising: an exhaust-side closing portion that closes the passage formed by the exhaust-side passage forming portion with a liquid.

In the present invention, each of the closing portions is
Two opening / closing valves for the closing portion, which are provided apart from each other along the flow path between the external space and the internal space, and capable of opening and closing the flow path;
An injection part for injecting liquid into the flow path between the two closing part opening and closing valves;
A drainage conduit for forming a drainage channel for discharging the liquid injected into the channel between the two closing portion opening / closing valves from the channel, and the drainage channel. It has a drainage part provided with a drainage on-off valve which can be opened and closed.

In the invention, it is preferable that each of the closing portions further includes a leakage detection means for detecting that the liquid in the flow path between the two closing portion opening / closing valves leaks from the closing portion opening / closing valve. ,
The information processing apparatus further includes notification means for notifying that leakage has been detected by the leakage detection means.

  The present invention is further characterized by further comprising control means for controlling operations of the air blowing means, the two closing portion opening / closing valves in the respective closing portions, and the drainage opening / closing valve.

Further, in the present invention, the air blowing means is provided in the intake side flow path forming portion,
The intake side closing part is provided between the air blowing means and the intake side opening,
It further comprises input means for inputting a start signal for starting the operation of absorbing carbon dioxide,
In response to the start signal input from the input means, the control means includes two closing part opening / closing valves in the intake side closing part and two closing part opening / closing valves in the exhaust side closing part. The opening / closing valve for the closing portion provided on the absorbent container side is opened, or after the opening operation, the draining on / off valve in each closing portion is opened, and then the air blowing The air blowing operation is started by the means, and then the closing portion opening / closing valve provided on the external space side of the two closing portion opening / closing valves in the exhaust side closing portion is opened.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent reliably that the absorption capability of a carbon dioxide absorber will deteriorate in a carbon dioxide absorber.

It is an external view which shows an example of the carbon dioxide absorber 10 which concerns on one Embodiment of this invention. 1 is a system diagram schematically showing the structure of a carbon dioxide absorber 10. It is a flowchart which shows the operation | movement procedure of the carbon dioxide absorber 10 when the input button for start is operated. It is a figure which expands and shows the closing part 50 which concerns on other embodiment. It is a figure which expands and shows the closing part 60 which concerns on other embodiment.

  FIG. 1 is an external view showing an example of a carbon dioxide absorber 10 according to an embodiment of the present invention, and FIG. 2 is a system diagram schematically showing the structure of the carbon dioxide absorber 10.

  The carbon dioxide absorption device 10 according to the present embodiment is a device configured to chemically absorb carbon dioxide using the carbon dioxide absorbent 11, and for example, an environment that has become dangerous to the human body due to generation of harmful gas or the like It is permanently installed in an evacuation building or the like provided for emergency evacuation, and is used to remove carbon dioxide from the air in the room space where the refugee is accommodated when an emergency evacuation is carried out. Thus, the carbon dioxide absorption device 10 installed for the purpose of being used only in an emergency needs to maintain a state in which sufficient ability can be exhibited by the time it is actually used, For that purpose, it is necessary to prevent the absorption capacity of the carbon dioxide absorbent 11 from deteriorating during the period from the installation to the installation site until the actual use.

The carbon dioxide absorber 10 according to the present embodiment is a CO ₂ canister in which a carbon dioxide absorbent 11 is provided in an internal space S1, and an intake-side opening 12a and an exhaust-side opening 12b connected to the internal space S1 are formed. 12 (absorbent container), one end of which communicates with the intake side opening 12a of the CO ₂ canister 12 and the other side of the intake port 13a formed with the other end forms a flow path 13b which communicates with the external space S2. An exhaust side flow path that forms a flow path 14b that communicates with the flow path forming portion 13 at one end to the exhaust side opening 12b of the CO ₂ canister 12 and communicates with the external space S2 at the exhaust port 14a formed at the other end. And a forming unit 14.

As the carbon dioxide absorbent 11 accommodated in the CO ₂ canister 12, a carbon dioxide absorbent having a property of chemically absorbing carbon dioxide is used. For example, particles mainly composed of lithium hydroxide, calcium hydroxide, barium hydroxide and the like are used. An agent is used.

  Note that a filter (not shown) for preventing dust and the like from entering the flow path 13b is provided at the intake port 13a in the flow path forming portion 13 on the intake side. Further, as shown in FIG. 1, a dust-proof cover 14c for preventing dust from entering the flow path 14b is provided at the exhaust port 14a in the flow path forming part 14 on the exhaust side.

In addition, a blower 15 (air blowing means) for blowing air toward the intake-side opening 12a in the CO ₂ canister 12 is provided in the intake-side flow path forming unit 13 adjacent to the intake port 13a. When the blower 15 is operated, the air in the external space S2 is taken into the flow path 13b through the intake port 13a and sent out to the opening 12a on the intake side.

In the present embodiment, the blower 15 is installed on the vibration isolation table 15a as shown in FIG. Further, as the blower 15, a centrifugal type is used, and a blower capable of blowing air with an air volume of 3 m ³ / min is used. However, the present invention is not limited to this, and the blower 15 may be appropriately selected according to the size and processing capacity of the carbon dioxide absorber 10.

The intake-side flow path forming portion 13 includes a flow path 13b between the blower 15 and the intake-side opening 12a in the CO ₂ canister 12 and between the external space S2 and the internal space S1 in the CO ₂ canister 12. A closing part 16 is provided for closing the liquid with a liquid 19. Further, a vibration isolation joint 17 is provided between the blower 15 and the closing portion 16 in order to prevent vibration generated when the blower 15 is operated from being transmitted to the closing portion 16.

On the other hand, the flow path forming portion 14 of the exhaust side, between the exhaust side of the opening 12b in the exhaust port 14a and the CO ₂ canister 12, a flow path between the internal space S1 in the external space S2 and the CO ₂ canister 12 A closing portion 18 for closing 14b with the liquid 19 is provided.

  Hereinafter, the configuration of the closing portions 16 and 18 will be described in detail. In the present embodiment, since the closing portion 16 and the closing portion 18 are configured in the same manner, only the closing portion 16 will be described. The closing portion 18 has the same configuration as that of the closing portion 16. A reference mark is attached and a duplicate description is omitted.

The closing portion 16 is generally U-shaped and has a circular cross section. The first tubular member 31 has an end portion 31a on the intake port 13a side and the vibration-proof joint 17. Between the second tubular member 32 having a circular cross section and the end portion 31b on the exhaust port 14a side of the first tubular member 31 and the CO ₂ canister 12. And a third tubular member 33 having a circular surface.

In the closed portion 16, a part of the flow path 13 b is formed by the internal spaces 41 to 43 in the tubular members 31 to 33. Specifically, a flow path is formed which communicates with the vibration-proof joint 17 at one end and communicates with the intake-side opening 12a in the CO ₂ canister 12 at the other end.

In the case of the closed portion 18, a part of the flow path 14 b is formed by the internal spaces 41 to 43 in the tubular members 31 to 33. Specifically, a flow path is formed which communicates with the exhaust side opening 12b of the CO ₂ canister 12 at one end and communicates with the exhaust port 14a at the other end.

  As shown in FIG. 2, the first tubular member 31 is disposed such that an end portion 31 a on the intake port 13 a side and an end portion 31 b on the exhaust port 14 a side open vertically upward, The tubular member 32 is disposed such that an end portion 32a on the exhaust port 14a side thereof faces the end portion 31a on the intake port 13a side of the first tubular member 31 and opens vertically downward. The third tubular member 33 is disposed such that the end 33a on the intake port 13a side faces the end 31b on the exhaust port 14a side of the first tubular member 31 and opens downward in the vertical direction. The

  Further, the second tubular member 32 has a portion 32b connected to the end portion 32a on the exhaust port 14a side formed in a right cylindrical shape, and is arranged so that the right cylindrical portion 32b extends along the vertical direction. Has been. Similarly, the third tubular member 33 is formed such that a portion 33b connected to the end portion 33a on the intake port 13a side is formed in a right cylindrical shape, and the right cylindrical portion 33b extends along the vertical direction. It is installed.

  In the present embodiment, the tubular members 31 to 33 each have a tube diameter of 100 mm. Further, the first tubular member 31 is arranged such that the ends 31a and 31b are arranged at the same height when the openings of the ends 31a and 31b are opened vertically upward. The height dimension L1 between the upper end portion of the cross section of the flow path at the lowermost portion and the end portions 31a and 31b is selected to be 100 mm. The second and third tubular members 32, 33 are formed in the same shape, and the length of each straight cylindrical portion 32b, 33b in the axial direction is selected to be at least 50 mm or more.

  In the present embodiment, the closing portion 16 has a flow between an end portion 31a on the intake port 13a side of the first tubular member 31 and an end portion 32a on the exhaust port 14a side of the second tubular member 32. A first electric valve 34 (opening / closing valve for closing portion) capable of opening and closing the passage 13b is interposed, and the exhaust pipe 14a side end portion 31b of the first tubular member 31 and the intake air in the third tubular member 33 are disposed. A second electric valve 35 (opening / closing valve for closing part) capable of opening and closing the flow path 13b is interposed between the end part 33a on the side of the mouth 13a. The first and second electric valves 34 and 35 are realized by, for example, an electric butterfly valve, an electric ball valve, or the like.

  Further, the closing portion 16 is provided in the first tubular member 31, and an injection portion 36 for injecting the liquid 19 into the internal space 41 of the first tubular member 31, and the liquid 19 in the first tubular member 31. Is drained from the internal space 41. For example, water is used as the liquid 19.

  The injecting section 36 has an injecting conduit 36 a that forms a channel for injecting the liquid 19 that is connected to the internal space 41, and an injecting valve 36 b that opens and closes the injecting conduit 36 a. The drainage unit 37 includes a drainage conduit 37a that forms a drainage passage for the liquid 19 and is connected to the internal space 41, and a drainage valve 37b that opens and closes the drainage conduit 37a ( The drainage pipe 37 a is provided at the lower end of the first tubular member 31.

  Further, the closed portion 16 is provided with a moisture sensor 38 at a position where the axial distance from the end portion 32a on the exhaust port 14a side is L2 in the right cylindrical portion 32b of the second tubular member 32. The moisture sensor 38 is configured to detect that the upper surface of the liquid 19 has reached its height position in the internal space 42 of the second tubular member 32.

  Similarly, the closed portion 16 is provided with a moisture sensor 39 at a position where the distance in the axial direction from the end portion 33a on the intake port 13a side is L2 in the right cylindrical portion 33b of the third tubular member 33. The moisture sensor 39 is configured to detect that the upper surface of the liquid 19 has reached its height position in the internal space 43 of the third tubular member 33.

  These moisture sensors 38 and 39 function as leakage detection means for detecting that the liquid 19 injected into the first tubular member 31 has leaked from the first electric valve 34 and the second electric valve 35. To do. In the present embodiment, the distance L2 is selected to be 50 mm.

In the initial stage before the carbon dioxide absorption device 10 is operated, the first and second electric valves 34 and 35 are in a closed state in which the flow paths are closed in the closed portions 16 and 18, respectively. 36b and the drainage valve 37b are also in a closed state for closing the flow path. The flow path between the first electric valve 34 and the second electric valve 35, that is, the internal space 41 of the first tubular member 31 is filled with the liquid 19 injected through the injection portion 36, Thereby, the communication between the internal space 42 of the second tubular member 32 and the internal space 43 of the third tubular member 33 is prevented. In this way, the flow paths 13b and 14b between the internal space S1 and the external space S2 in the CO ₂ canister 12 are closed by the liquid 19, respectively.

As shown in FIG. 1, the carbon dioxide absorption device 10 according to the present embodiment controls the operation of the input unit 20 that accepts an input operation by the user and the blower 15, and the first and Control means 21 for controlling the opening / closing operation of the second electric valves 34, 35, the opening / closing operation of the injection valve 36b, and the opening / closing operation of the drainage valve 37b, and the moisture sensors 38, 39 in the respective closed portions 16, 18 To notify the user that the liquid 19 has leaked from the first electric valve 34 or the second electric valve 35, and a control box 23 that houses the input means 20, the control means 21, and the notification means 22. And a frame 2 that supports the CO ₂ canister 12, blower 15, each closing portion 16, 18, and control box 23 4 is further provided.

  The input unit 20 includes a start input button that receives a start operation for starting the operation of causing the carbon dioxide absorber 10 to absorb carbon dioxide. When the start input button is operated by the user, the operation start signal is received. Entered.

  In the present embodiment, the control means 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and in accordance with a control program stored in advance in the ROM, It is comprised so that operation | movement of the carbon absorption apparatus 10 may be controlled.

  The notification means 22 is realized by, for example, a lamp. When the moisture sensors 38 and 39 detect that the liquid 19 has leaked from the first electric valve 34 and the second electric valve 35, the control means 21 In response to the detection signal, the lamp is turned on to notify the user of leakage of the liquid 19.

  FIG. 3 is a flowchart showing an operation procedure of the carbon dioxide absorber 10 when the start input button is operated. In the carbon dioxide absorption device 10 in the initial stage, when the operation start signal is input by the user operating the start input button, the process proceeds to step s1 in response to the operation start signal.

  In step s1, the control means 21 operates the first and second electric valves 34 and 35 in the closed portion 16 so as to change from the closed state to the open state, and is disposed on the intake port 13a side in the closed portion 18. The first electric valve 34 is operated from the closed state to the open state, and the process proceeds to step s2.

  In step s2, the control means 21 operates the drainage valves 37b in the closed portions 16 and 18 so as to change from the closed state to the open state, and proceeds to step s3. Note that the process of step s2 may be performed simultaneously with the process of step s1.

  In step s3, the control means 21 causes the blower 15 to start a blowing operation, and proceeds to step s4. When all of the liquid 19 injected into the respective closed portions 16 and 18 is discharged, in step s4, the control means 21 closes the second electric valve 35 disposed on the exhaust port 14a side in the closed portion 18. Then, the drainage valve 37b in each of the closed portions 16 and 18 is operated so as to be changed from the open state to the closed state, and the processing is completed.

Thereby, the opening 12a on the intake side in the CO ₂ canister 12 communicates with the external space S2 via the flow path 13b, and the opening 12b on the exhaust side in the CO ₂ canister 12 enters the external space S2 via the flow path 14b. Communicate.

Thereby, the operation | movement which absorbs the carbon dioxide by the carbon dioxide absorber 10 is started. That is, air in the external space S2 taken from the intake port 13a into the flow path 13b by the blowing operation by the blower 15 is guided to the opening 12a of the intake side of the CO ₂ canister 12, provided in the CO ₂ canister 12 dioxide When passing through the carbon absorbent 11, the carbon dioxide is chemically absorbed by the carbon dioxide absorbent 11, and the air from which the carbon dioxide has been removed is guided by the flow path 14b and discharged from the exhaust port 14a. .

As described above, according to the present embodiment, the carbon dioxide absorption device 10 has the internal space S1 and the external space S2 of the CO ₂ canister 12 in which the carbon dioxide absorbent 11 is accommodated in the initial stage before actual use. Since the flow paths 13b and 14b communicating with each other are closed by the liquid 19 by the closing portions 16 and 18, the inflow of air from the external space S2 to the internal space S1 can be reliably prevented. Therefore, it is possible to reliably prevent the absorption capacity of the carbon dioxide absorbent 11 from being deteriorated before the carbon dioxide absorbent device 10 is actually used.

Moreover, according to this embodiment, since each closing part 16 and 18 has the 1st and 2nd electric valves 34 and 35, it is liquid by making each electric valves 34 and 35 into a closed state. The flow path between the internal space 41 in which 19 is injected and the external space S2 and the flow path between the internal space S1 of the CO ₂ canister 12 can be closed. As a result, the injected liquid 19 is evaporated, or is absorbed by the carbon dioxide absorbent 11 in the CO ₂ canister 12. It can prevent reliably that the closing function of 14b is impaired. In addition, in this embodiment, each closing part 16 and 18 has the two electric valves 34 and 35, respectively, but the number of electric valves may be three or more.

  Further, according to the present embodiment, each of the closing portions 16 and 18 is configured such that the liquid 19 injected into the first tubular member 31 by the moisture sensors 38 and 39 is the first electric valve 34 and the second electric valve. 35 is configured to be able to detect that the liquid 19 has leaked, and when the leakage of the liquid 19 is detected by the moisture sensors 38 and 39, the fact is notified by the notification means 22. The user can be prompted. As a result, it is possible to prevent a situation in which the apparatus cannot be operated in an emergency.

  In addition, according to the present embodiment, when the liquid 19 injected into the first tubular member 31 is discharged from the first tubular member 31, first, the first and second electric motors in the closing portion 16. The valves 34 and 35 are opened, and the first electric valve 34 disposed on the intake port 13a side is opened in the closing portion 18, and at the same time or thereafter, the drainage valves in the closing portions 16 and 18 are opened. 37b is opened, and then the blower 15 starts the blowing operation while the second electric valve 35 disposed on the exhaust port 14a side in the closing portion 18 is kept closed. By applying a static pressure (about 6 kPa) of the blower 15 to the liquid 19, the liquid 19 can be quickly discharged from the inner space 41 of the first tubular member 31. It is possible to shorten the time to. Further, the diameter of the drainage valve 37b can be reduced (about 8 mm in diameter).

In the present embodiment, the liquid 19 injected into the first tubular member 31 is configured to be discharged out of the apparatus through the drainage part 37. The liquid 19 injected into the tubular member 31 may be configured to be discharged into the CO ₂ canister 12 instead of outside the apparatus.

In this case, the drainage part 37 in the closed part 16 is omitted or kept in a normally closed state, and the drainage part 37 in the closed part 18 has a flow path for drainage of the CO ₂ canister 12. A drainage conduit 37a is provided so as to communicate with the internal space S1.

  In this case, in response to the operation start signal, the liquid discharge operation first opens the first and second electric valves 34 and 35 in the closing portion 16 and is disposed on the intake port 13a side in the closing portion 18. The first electric valve 34 is opened, and simultaneously or after that, the drain valve 37b in the closing portion 18 is opened, and then the second electric valve disposed on the exhaust port 14a side in the closing portion 18 is opened. This is performed by causing the blower 15 to start an air blowing operation while keeping the valve 35 closed.

In the case of this embodiment, by applying the static pressure (about 6 kPa) of the blower 15 to the liquid 19 in the closed portion 16, the liquid 19 in the closed portion 16 is bubbled, and the air to which moisture is added is CO 2. since flow into the ₂ canister 12, is to CO ₂ canister 12 is supplied humid air, the carbon dioxide absorption efficiency due to the carbon dioxide absorber 11 can be increased (about 2%). Further, since the liquid 19 is not discharged out of the apparatus, a drain box for receiving the discharged liquid 19 becomes unnecessary.

  In the first embodiment, the blower 15 as the air blowing means is provided adjacent to the intake port 13a in the flow path forming unit 13 on the intake side. However, in the other embodiments, the blower 15 is provided on the exhaust side. In the flow path forming part 14, it may be provided adjacent to the exhaust port 14 a.

  In the first embodiment, the moisture sensor 38 is provided in the second tubular member 32. However, in other embodiments, the moisture sensor 38 is connected to the first electric valve 34. You may provide in the position of the 1st tubular member 31 used as object.

  Similarly, in the first embodiment, the moisture sensor 39 is provided on the third tubular member 33. However, in other embodiments, the moisture sensor 39 is connected to the second electric valve 35. The first tubular member 31 may be provided at the position.

  Moreover, in said 1st Embodiment, the closure parts 16 and 18 are the 1st tubular members 31 formed in the U shape between the 2nd tubular member 32 and the 3rd tubular member 33. As shown in FIG. However, the shape of the closing portions 16 and 18 is not limited to such a shape.

  FIG. 4 is an enlarged view of the closing part 50 according to another embodiment. The closing part 50 shown in FIG. 4 can be used in place of the closing part 16 and / or the closing part 18 of the carbon dioxide absorber 10 according to the first embodiment. The structure of the closing part 50 is partially different from the structure of the closing part 16. Specifically, the structure of the closing portion 50 corresponding to the first tubular member 31 is different from that of the closing portion 16, and the other portions are configured in the same manner as the closing portion 16. Therefore, in the closing part 50, about the part comprised similarly to the closing part 16, the same reference mark is attached | subjected and the overlapping description is abbreviate | omitted.

  The closing portion 50 shown in FIG. 4 includes two connecting pipes 51 and 52 formed in a rectangular shape and a hollow storage container 53 formed in a substantially rectangular parallelepiped shape in a portion corresponding to the first tubular member 31. And is composed of. In the closed portion 50, a part of the flow path 13 b is formed by the internal spaces 42 and 43 in the second and third tubular members 32 and 33 and the internal space 44 in the connection pipes 51 and 52 and the storage container 53. .

  The connecting pipe 51 is in such a posture that its central axis extends in the vertical direction, one end 51a in the longitudinal direction thereof faces the end 32a on the exhaust port 14a side of the second tubular member 32, and the other The side end portion 51 b is provided so as to be disposed in the storage container 53. Similarly, the connecting pipe 52 has a posture in which the central axis extends in the vertical direction, and an end portion 52a on one side in the longitudinal direction faces the end portion 33a on the intake port 13a side of the third tubular member 33. The other end 52 b is provided so as to be disposed in the storage container 53. That is, the connecting pipes 51 and 52 are provided through the storage container 53.

  A first electric valve 34 capable of opening and closing the flow path 13b is interposed between the end 51a of the connecting pipe 51 and the end 32a of the second tubular member 32 on the exhaust port 14a side. Between the end portion 52a of the connecting pipe 52 and the end portion 33a of the third tubular member 33 on the intake port 13a side, a second electric valve 35 capable of opening and closing the flow path 13b is interposed.

  In the initial stage before the operation, the connecting pipes 51 and 52 and the internal space 44 in the storage container 53 are filled with the liquid 19 injected by an injection unit (not shown). In addition, the connection part of the storage container 53 and the connection pipes 51 and 52 shall be sealed so that the liquid 19 may not leak.

  Even when the closing part 50 configured in this way is used in place of the closing part 16 and / or the closing part 18 of the carbon dioxide absorber 10 according to the first embodiment, Similar effects can be achieved.

  FIG. 5 is an enlarged view showing a closing portion 60 according to still another embodiment. The closing part 60 shown in FIG. 5 can be used in place of the closing part 16 and / or the closing part 18 of the carbon dioxide absorber 10 according to the first embodiment. The structure of the closing part 60 is partially different from the structure of the closing part 16. Specifically, the closing portion 60 is different from the closing portion 16 in the structure corresponding to the first to third tubular members 31 to 33, and the other portions are configured in the same manner as the closing portion 16. ing. Therefore, in the closing part 60, about the part comprised similarly to the closing part 16, the same reference mark is attached | subjected and the overlapping description is abbreviate | omitted.

The closing portion 60 shown in FIG. 5 extends linearly, and has a first tubular member 61 having a large-diameter portion 61c that forms an inner space having a larger diameter than both end portions 61a and 61b at the center portion, and a first tubular member 61. The second tubular member 62 provided between the end portion 61a on the intake port 13a side of the tubular member 61 and the antivibration joint 17 and having a circular cross section, and the exhaust port 14a in the first tubular member 61. And a third tubular member 63 having a circular cross section provided between the side end portion 61b and the CO ₂ canister 12. In the closed portion 60, a part of the flow path 13 b is formed by the internal spaces 45 to 47 in these tubular members 61 to 63.

  The first tubular member 31 is disposed such that an end 61a on the intake port 13a side and an end 61b on the exhaust port 14a side are opened in a horizontal direction, and the second tubular member 62 has an exhaust port The end portion 62a on the 14a side is disposed so as to face the end portion 61a on the intake port 13a side of the first tubular member 61 and open in the horizontal direction, and the third tubular member 63 has its intake air The end 63a on the side of the port 13a is disposed so as to face the end 61b on the side of the exhaust port 14a of the first tubular member 61 and open in a horizontal direction.

  The second tubular member 62 has a portion 62b connected to the end portion 62a on the exhaust port 14a side formed in a right cylindrical shape, and is arranged so that the right cylindrical portion 62b extends along a horizontal direction. It is installed. Similarly, the third tubular member 63 is formed such that a portion 63b connected to the end portion 63a on the intake port 13a side is formed in a right cylindrical shape, and the right cylindrical portion 63b extends along a horizontal direction. It is arranged.

  Further, the first electric valve capable of opening and closing the flow path 13b between the end portion 61a on the intake port 13a side of the first tubular member 61 and the end portion 62a on the exhaust port 14a side of the second tubular member 62. 34 is interposed, and the flow path 13b can be opened and closed between the end 61b on the exhaust port 14a side of the first tubular member 61 and the end 63a on the intake port 13a side of the third tubular member 63. A second electric valve 35 is interposed. In an initial stage before operation, the internal space 45 in the first tubular member 61 is filled with the liquid 19 injected by an injection unit (not shown).

  Even when the closing part 60 configured in this way is used in place of the closing part 16 and / or the closing part 18 of the carbon dioxide absorber 10 according to the first embodiment, Similar effects can be achieved.

10 carbon dioxide absorber 11 of carbon dioxide absorber 12 CO ₂ canister 13 channel-forming section 13a inlet 14a outlet 15 blower 16, 18 closing section 19 the liquid 20 input unit 21 control unit 22 informing means 31 to 33 tubular member 34, 35 Electric valve 36 Injection part 37 Drainage part 38, 39 Moisture sensor

Claims (5)

A carbon dioxide absorber that has a carbon dioxide absorbent, sucks air from an external space, and discharges air that has absorbed carbon dioxide by the carbon dioxide absorbent to the external space,
An absorbent containing container in which an internal space is formed, an intake side opening and an exhaust side opening connected to the internal space are formed, and the carbon dioxide absorbent is contained in the internal space;
An intake-side flow path forming portion that communicates with the intake-side opening and forms a flow path that communicates with an external space;
An exhaust side flow path forming portion that communicates with the exhaust side opening and forms a flow path that communicates with an external space;
Blower means provided in the intake side flow path forming part or the exhaust side flow path forming part,
An intake side closing part that closes the flow path formed by the intake side flow path forming part with a liquid;
A carbon dioxide absorption device comprising: an exhaust side closing part that closes the flow path formed by the exhaust side flow path forming part with a liquid. Each of the closures is
Two opening / closing valves for the closing portion, which are provided apart from each other along the flow path between the external space and the internal space, and capable of opening and closing the flow path;
An injection part for injecting liquid into the flow path between the two closing part opening and closing valves;
A drainage conduit for forming a drainage channel for discharging the liquid injected into the channel between the two closing portion opening / closing valves from the channel, and the drainage channel. The carbon dioxide absorption device according to claim 1, further comprising a drainage unit including a drainage on-off valve that can be opened and closed. Each closing part further has a leakage detection means for detecting that the liquid in the flow path between the two closing part opening / closing valves leaks from the closing part opening / closing valve,
The carbon dioxide absorption device according to claim 2, further comprising notification means for notifying that leakage has been detected by the leakage detection means.   4. The carbon dioxide according to claim 2, further comprising control means for controlling operations of the blower means, the two closing part opening / closing valves in the respective closing parts, and the drainage opening / closing valve. Absorber. The air blowing means is provided in the intake side flow path forming portion,
The intake side closing part is provided between the air blowing means and the intake side opening,
It further comprises input means for inputting a start signal for starting the operation of absorbing carbon dioxide,
In response to the start signal input from the input means, the control means includes two closing part opening / closing valves in the intake side closing part and two closing part opening / closing valves in the exhaust side closing part. The opening / closing valve for the closing portion provided on the absorbent container side is opened, or after the opening operation, the draining on / off valve in each closing portion is opened, and then the air blowing 5. The air blowing operation is started by the means, and then the closing portion opening / closing valve provided on the external space side of the two closing portion opening / closing valves in the exhaust side closing portion is opened. The carbon dioxide absorber described in 1.

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