Air regeneration system and control method thereof

Abstract

The embodiment of the present application is about an air regeneration system and a control method thereof, which relates to the field of air regeneration technology, and the main purpose is to improve the safety and controllability of potassium superoxide use. The air regeneration system includes: a potassium superoxide agent feeder; a water feeder; a mixed reaction oxygen generator, the feed inlet of the mixed reaction oxygen generator is respectively connected to the discharge port of the potassium superoxide agent feeder and the water feeder; a carbon dioxide absorber, the inlet of the carbon dioxide absorber is respectively connected to the potassium hydroxide solution outlet and the air intake channel of the mixed reaction oxygen generator, and is used to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet with the carbon dioxide in the air to remove the carbon dioxide in the air. Compared with the prior art, potassium superoxide can react completely with water, and the oxygen production can be fed with the required mass of potassium superoxide agent and water as needed. The reaction is highly controllable and the reaction is complete, which can improve the safety and controllability of potassium superoxide use.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of air regeneration, and in particular, to an air regeneration system and a control method thereof. Background Art

[0002] When people are in confined spaces, such as air-raid shelters, mines, submarines, etc., the concentrations of oxygen and carbon dioxide in the air need to be kept within a certain range. If the oxygen concentration is too low or the carbon dioxide concentration is too high, it will pose a threat to the life safety of the people.

[0003] For this reason, potassium superoxide particles are usually configured as oxygen generators in confined spaces. During use, staff can expose a certain amount of potassium superoxide particles to the air in the confined space. The potassium superoxide particles will react chemically with the water vapor in the air to produce oxygen and potassium hydroxide. At the same time, potassium hydroxide will react with the carbon dioxide in the air to produce potassium carbonate, thereby increasing the oxygen concentration in the air and removing the carbon dioxide concentration in the air. However, in the actual use of potassium superoxide particles, on the one hand, the reaction of potassium superoxide particles with water vapor is uncontrollable. Once the potassium superoxide particles are exposed to the air, the oxygen production process cannot be interrupted. On the other hand, during the reaction of the outer surface of the potassium superoxide particles with water vapor, the potassium carbonate produced on the surface of the potassium superoxide particles will form a pasty coating, making it difficult for the potassium superoxide particles to achieve complete decomposition. At the same time, in the treatment of the used potassium superoxide particles, it is difficult for the treatment personnel to distinguish whether it is completely reacted. In the process of handling the potassium superoxide particles that have not completely reacted, since the potassium superoxide that has not completely reacted is a strong oxidant, if it is not handled properly, dangerous accidents are prone to occur. Summary of the invention

[0004] In view of this, the embodiments of the present application provide an air regeneration system and a control method thereof, the main purpose of which is to improve the safety and controllability of the use of potassium superoxide.

[0005] In order to achieve the above objectives, the embodiments of the present application mainly provide the following technical solutions:

[0006] On the one hand, an embodiment of the present application provides an air regeneration system, comprising:

[0007] Potassium superoxide agent feeder;

[0008] water dispenser;

[0009] A mixed reaction oxygen generator, wherein the feed inlet of the mixed reaction oxygen generator is respectively connected to the feed outlet of the potassium superoxide agent feeder and the water supply outlet of the water supply device;

[0010] A carbon dioxide absorber, the inlet of which is respectively connected to the potassium hydroxide solution outlet of the mixed reaction oxygenator and the air inlet passage, and is used to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet with the carbon dioxide in the air to remove the carbon dioxide in the air.

[0011] The objectives of the embodiments of the present application and the solutions to the technical problems thereof can be further achieved by adopting the following technical measures.

[0012] Optionally, in the aforementioned air regeneration system, the potassium superoxide agent feeder comprises:

[0013] Potassium superoxide tank;

[0014] A feeding valve, wherein the inlet of the feeding valve is connected to the discharge port of the potassium superoxide agent tank, and the outlet of the feeding valve is connected to the inlet of the mixed reaction oxygen generator. The feeding valve is provided with a rotating valve core, and the rotating valve core has a first space and a second space that are independently isolated. When the rotating valve core rotates, the first space circulates through the inlet and outlet of the feeding valve, and the second space circulates through the inlet and outlet of the feeding valve.

[0015] Optionally, in the aforementioned air regeneration system, a first valve is provided between the outlet of the feeding valve and the inlet of the mixed reaction oxygen generator.

[0016] Optionally, in the aforementioned air regeneration system, a positive pressure drying pipeline is provided between the outlets of the first valve and the feeding valve.

[0017] Optionally, in the aforementioned air regeneration system, the mixed reaction oxygen generator comprises:

[0018] A reactor, wherein the inlet of the reactor is respectively connected to the discharge port of the potassium superoxide agent feeder and the water supply port of the water feeder;

[0019] A filter, wherein the inlet of the filter is communicated with the outlet of the reactor.

[0020] Optionally, in the aforementioned air regeneration system, the reactor comprises a reaction chamber, a stirring impeller and a baffle are disposed inside the reaction chamber, and the baffle is disposed between the inlet of the reaction chamber and the stirring impeller.

[0021] Optionally, in the aforementioned air regeneration system, the carbon dioxide absorber is connected to the outlet of the filter.

[0022] On the other hand, an embodiment of the present application provides a control method using the above-mentioned air regeneration system, comprising:

[0023] According to the oxygen generation request instruction, the potassium superoxide agent feeder is controlled to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator, and the water feeder is controlled to feed water to the feed inlet of the mixed reaction oxygen generator.

[0024] The objectives of the embodiments of the present application and the solutions to the technical problems thereof can be further achieved by adopting the following technical measures.

[0025] Optionally, the control method of the air regeneration system, wherein the oxygen generation request instruction includes the oxygen generation amount, controls the potassium superoxide agent feeder to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator, and controls the water feeder to feed water to the feed inlet of the mixed reaction oxygen generator, including:

[0026] Calculate the first mass of potassium superoxide agent to be delivered and the second mass of water to be delivered according to the oxygen production according to a preset rule;

[0027] Controlling the potassium superoxide agent feeder to deliver a first mass of potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator;

[0028] The water feeder is controlled to feed the second mass of water to the feed inlet of the mixed reaction oxygen generator.

[0029] Optionally, the aforementioned control method of the air regeneration system further includes:

[0030] According to the carbon dioxide absorption request instruction, the carbon dioxide absorber is controlled to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet of the mixed reaction oxygenator with the carbon dioxide in the air to remove the carbon dioxide in the air.

[0031] By means of the above technical solution, the air regeneration system and control method thereof provided by the technical solution of the present application have at least the following advantages:

[0032] In the technical solution provided by the embodiment of the present scheme, when the oxygen content in the air is low, the potassium superoxide agent feeder can be controlled to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator, and the water feeder can be controlled to feed water to the feed inlet of the mixed reaction oxygen generator, so that the potassium superoxide agent and water are mixed and reacted in the mixed reaction oxygen generator to form a potassium hydroxide solution, and react to generate oxygen to supplement the oxygen content of the ambient air. Compared with the prior art, potassium superoxide can react completely with water, and the oxygen production amount can be fed with the required mass of potassium superoxide agent and water as needed, the reaction is highly controllable and the reaction is complete, which can improve the safety and controllability of potassium superoxide use.

[0033] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the embodiments of the present application and to implement them according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the structural principle of an air regeneration system provided in an embodiment of the present application;

[0036] Figure 2 It is a structural schematic diagram of a feeding valve of an air regeneration system provided in an embodiment of the present application;

[0037] Figure 3 It is a schematic cross-sectional structure diagram of a feeding valve of an air regeneration system provided in an embodiment of the present application in a first vertical direction;

[0038] Figure 4 It is a schematic cross-sectional structure diagram of a feeding valve of an air regeneration system provided in an embodiment of the present application in a second vertical direction;

[0039] Figure 5 is a schematic diagram of the internal structure of a specific air regeneration system provided in an embodiment of the present application;

[0040] Figure 6 is a structural schematic diagram of a specific spray-type carbon dioxide absorber of an air regeneration system provided in an embodiment of the present application;

[0041] Figure 7 is a structural schematic diagram of another specific air regeneration system provided in an embodiment of the present application;

[0042] Figure 8 is a schematic diagram of the internal structure of another specific air regeneration system provided in an embodiment of the present application;

[0043] Fig. 9 is a structural schematic diagram of a spiral blade of another specific air regeneration system provided in an embodiment of the present application;

[0044] Fig.10 is a structural schematic diagram of a spiral blade of another specific air regeneration system provided in an embodiment of the present application;

[0045] Fig.11is a schematic structural diagram of another type of spiral blade of another specific air regeneration system provided in an embodiment of the present application;

[0046] Fig.12 is a first vertical cross-sectional structural schematic diagram of a box of another specific air regeneration system provided in an embodiment of the present application;

[0047] Fig.13 It is a second vertical cross-sectional structural schematic diagram of a box of another specific air regeneration system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0050] Figures 1 to 13 For an embodiment of an air regeneration system provided in this application, please refer to Figures 1 to 13 An embodiment of the present application provides an air regeneration system, comprising:

[0051] Potassium superoxide agent feeder 10;

[0052] Water dispenser 20;

[0053] A mixed reaction oxygen generator 30, wherein the feed inlet of the mixed reaction oxygen generator 30 is respectively connected to the feed outlet of the potassium superoxide agent feeder 10 and the water supply outlet of the water supply device 20;

[0054] The carbon dioxide absorber 40 has its inlet connected to the potassium hydroxide solution outlet of the mixed reaction oxygen generator 30 and the air inlet channel 51, respectively, and is used to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet with the carbon dioxide in the air to remove the carbon dioxide in the air.

[0055] In the technical solution provided by the embodiment of the present solution, when the oxygen content in the air is low, the potassium superoxide agent feeder 10 can be controlled to feed the potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30, and the water feeder 20 can be controlled to feed water to the feed inlet of the mixed reaction oxygen generator 30, so that the potassium superoxide agent and water are mixed and reacted in the mixed reaction oxygen generator 30 to form a potassium hydroxide solution, and react to generate oxygen to supplement the oxygen content of the ambient air. Compared with the prior art, potassium superoxide can react completely with water, and the oxygen production amount can be fed with the required mass of potassium superoxide agent and water as needed, the reaction is highly controllable and the reaction is complete, which can improve the safety and controllability of potassium superoxide use.

[0056] The potassium superoxide agent feeder 10 and the water feeder 20 are controlled by a controller, and can control the potassium superoxide agent feeder 10 to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30, and control the water feeder 20 to feed water to the feed inlet of the mixed reaction oxygen generator 30 by sending an oxygen generation request instruction to the controller. The dosage of potassium superoxide agent fed by the potassium superoxide agent feeder 10 is controllable, and the water delivery amount of the water feeder 20 is controllable.

[0057] During implementation, since the potassium superoxide agent reacts violently with water, the mixed solution in the mixed reaction oxygen generator 30 is splashed into the potassium superoxide agent feeder 10. In order to overcome the above problems, during implementation, the potassium superoxide agent feeder 10 includes: a potassium superoxide agent tank 11 and a feeding valve 12, the inlet of the feeding valve 12 is connected to the discharge port of the potassium superoxide agent tank 11, and the outlet of the feeding valve 12 is connected to the inlet of the mixed reaction oxygen generator 30. The feeding valve 12 has a rotating valve core, and the rotating valve core has a related independently isolated first space 121 and a second space 122. When the rotating valve core rotates, the first space 121 circulates through the inlet and outlet of the feeding valve 12, and the second space 122 circulates through the inlet and outlet of the feeding valve 12.

[0058] For example, in the implementation, when the rotary valve core rotates to the first angle, the first space 121 is connected to the inlet of the dosing valve 12, and the second space 122 is connected to the outlet of the dosing valve 12. When the rotary valve core rotates to the second angle, the first space 121 is connected to the outlet of the dosing valve 12, and the second space 122 is connected to the inlet of the dosing valve 12. When dosing is required, the rotary valve core of the dosing valve 12 is controlled to rotate, wherein the control implementation method may be a controlled knob of the rotary valve core manually controlled, or the rotary valve core is driven to rotate by a motor. Among them, during the rotation of the rotary valve core, when the rotary valve core rotates to the first angle, the first space 121 is connected to the inlet of the dosing valve 12, and the second space 122 is connected to the outlet of the dosing valve 12, and the potassium superoxide agent in the potassium superoxide agent tank 11 fills the first space 121 under the action of gravity. When the rotary valve core rotates to the second angle, the first space 121 is connected to the outlet of the dosing valve 12, and the second space 122 is connected to the inlet of the dosing valve 12. The potassium superoxide agent in the first space 121 falls into the mixed reaction oxygen generator 30 under the action of gravity, and the potassium superoxide agent in the potassium superoxide agent tank 11 fills the second space 122 under the action of gravity. Since the first space 121 and the second space 122 are isolated from each other, when the first space 121 is connected to the mixed reaction oxygen generator 30 for feeding, the first space 121 is not connected to the potassium superoxide agent feeder 10, and when the second space 122 is connected to the mixed reaction oxygen generator 30 for feeding, the second space 122 is not connected to the potassium superoxide agent feeder 10, thereby preventing the mixed solution in the mixed reaction oxygen generator 30 from splashing into the potassium superoxide agent feeder 10.

[0059] In addition, in order to control the moisture in the mixed reaction oxygen generator 30 from entering the feed valve 12, a first valve 13 is provided between the outlet of the feed valve 12 and the feed inlet of the mixed reaction oxygen generator 30. After the potassium superoxide agent feeder 10 has finished feeding, the first valve 13 is closed. When the potassium superoxide agent feeder 10 is feeding, the first valve 13 is opened. The first valve 13 can be an electric valve or a manual valve. In implementation, in order to further improve the dryness of the feed valve 12 and reduce the moisture return of the feed valve 12 into the potassium superoxide agent feeder 10, a positive pressure drying pipeline 14 is provided between the first valve 13 and the outlet of the feed valve 12, so that moisture can be removed between the first valve 13 and the outlet of the feed valve 12.

[0060] In the mixed reaction oxygen generator 30, potassium superoxide agent and water react to generate potassium hydroxide and oxygen. Since the potassium superoxide agent contains adhesive additives and other substances, suspended flocculent impurities will be generated at the same time. In practice, the mixed reaction oxygen generator 30 includes: a reactor 31 and a filter 32. The inlet of the reactor 31 is connected to the discharge port of the potassium superoxide agent feeder 10 and the water supply port of the water supply device 20 respectively; the inlet of the filter 32 is connected to the outlet of the reactor 31. The carbon dioxide absorber 40 is connected to the outlet of the filter 32, and the filter 32 transports the filtered potassium hydroxide solution to the carbon dioxide absorber 40.

[0061] In addition, the reactor 31 includes a reaction chamber, and a stirring impeller 311 and a baffle 312 are arranged inside the reaction chamber. The baffle 312 is arranged between the entrance of the reaction chamber and the stirring impeller 311. When the stirring impeller 311 is stirring, the baffle 312 can prevent the stirred liquid from splashing to the entrance of the reaction chamber, thereby controlling the sodium hydroxide solution to splash into the potassium superoxide agent feeder 10.

[0062] In some embodiments, the mixed reaction oxygen generator 30 may be provided with an oxygen discharge port, and the oxygen generated by the reaction in the mixed reaction oxygen generator 30 may be discharged through the oxygen discharge port of the mixed reaction oxygen generator 30. In some embodiments, the carbon dioxide absorber 40 is provided with an oxygen discharge port, and the oxygen generated by the reaction in the mixed reaction oxygen generator 30 may be discharged through the oxygen discharge port of the carbon dioxide absorber 40.

[0063] In implementation, the air regeneration system may use a control device to control the execution of air regeneration. The present application provides an embodiment of a control method for the above-mentioned air regeneration system. An embodiment of the present application provides a control method for the above-mentioned air regeneration system, including:

[0064] Oxygen production step: according to the oxygen production request instruction, the potassium superoxide agent feeder 10 is controlled to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30, and the water feeder 20 is controlled to feed water to the feed inlet of the mixed reaction oxygen generator 30.

[0065] When oxygen production is required, an oxygen generation request instruction is sent to the control device, and the control device generates oxygen according to the oxygen generation request instruction. The sending of the oxygen generation request instruction to the control device can be a manual operation or an automatic control by the monitoring system. The monitoring system monitors the ambient oxygen concentration. If the oxygen concentration is lower than the first preset concentration, the oxygen generation request instruction is sent to the control device. In implementation, the required oxygen generation amount varies according to the different ambient oxygen concentrations and the different sizes of the ambient space. The required oxygen generation amount can be calculated according to a preset calculation scheme, such as the oxygen generation amount is proportional to the size of the ambient space and inversely proportional to the ambient oxygen concentration. The oxygen generation request instruction includes the oxygen generation amount, controls the potassium superoxide agent feeder 10 to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30, and controls the water feeder 20 to feed water to the feed inlet of the mixed reaction oxygen generator 30, including:

[0066] Calculate the first mass of potassium superoxide agent to be delivered and the second mass of water to be delivered according to the oxygen production according to a preset rule;

[0067] Controlling the potassium superoxide agent feeder 10 to feed a first mass of potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30;

[0068] The water feeder 20 is controlled to feed the second mass of water to the feed inlet of the mixed reaction oxygen generator 30 .

[0069] Carbon dioxide absorption step: according to the carbon dioxide absorption request instruction, the carbon dioxide absorber 40 is controlled to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet of the mixed reaction oxygen generator 30 with the carbon dioxide in the air to remove the carbon dioxide in the air.

[0070] When it is necessary to remove carbon dioxide from the air, a carbon dioxide absorption request instruction is sent to the control device, and the control device mixes the potassium hydroxide solution with the carbon dioxide in the air according to the carbon dioxide absorption request instruction. The sending of the carbon dioxide absorption request instruction to the control device can be manually operated or automatically controlled by a monitoring system, and the monitoring system monitors the environmental carbon dioxide concentration. If the carbon dioxide concentration is higher than a second preset concentration, a carbon dioxide absorption request instruction is sent to the control device until the carbon dioxide concentration is lower than a third preset concentration, and the mixing of the potassium hydroxide solution and the carbon dioxide in the air is stopped.

[0071] In the specific implementation, based on the air regeneration system in the above embodiment, the carbon dioxide absorber 40 can adopt different structural forms, combined with Figure 5 and Figure 6As shown, in some embodiments, the carbon dioxide absorber 40 is a spray-type carbon dioxide absorber 40, and a spray device 411 is arranged inside the spray-type carbon dioxide absorber 40, and the spray inlet of the spray device 411 is connected to the potassium hydroxide solution outlet of the mixed reaction oxygen generator 30 through a spray pump, and the bottom of the spray-type carbon dioxide absorber 40 is connected to the oxygen outlet of the mixed reaction oxygen generator 30 and the air intake channel 51, and the top of the spray-type carbon dioxide absorber 40 is provided with an exhaust outlet.

[0072] In the technical solution provided in this embodiment, when it is necessary to reduce the concentration of carbon dioxide in the air, the potassium hydroxide solution formed by the reaction of potassium superoxide and water can be sprayed inside the spray type carbon dioxide absorber 40 by the spray device 411, and reacts with the carbon dioxide in the air entering the spray type carbon dioxide absorber 40 through the air inlet channel 51, so that the carbon dioxide in the air can be effectively and quickly absorbed to reduce the concentration of carbon dioxide in the air. On the other hand, the oxygen generated by the reaction of potassium superoxide and water can be discharged through the exhaust outlet at the top of the spray type carbon dioxide absorber 40, and the discharged oxygen can be sprayed by the potassium hydroxide solution to remove the heat therein.

[0073] Furthermore, the air regeneration system further comprises: a waste liquid collection cylinder 60, the waste liquid collection cylinder 60 is connected to the bottom of the spray type carbon dioxide absorber 40, and the height position of the waste liquid collection cylinder 60 connected to the bottom of the spray type carbon dioxide absorber 40 is lower than the oxygen outlet of the mixed reaction oxygen generator 30 and the height position of the bottom of the spray type carbon dioxide absorber 40 in the air intake channel 51. The spray inlet of the spray device 411 is connected to the waste liquid collection cylinder 60 through a spray pump. For the potassium hydroxide solution that has not reacted completely, after entering the waste liquid collection cylinder 60, it can enter the spray device 411 again through the spray pump, so that the potassium hydroxide can be completely reacted with the carbon dioxide in the air.

[0074] In practice, a fan is provided at the top of the spray type carbon dioxide absorber 40 to suck external air into the spray type carbon dioxide absorber 40 through the air inlet passage 51. That is, during spraying, the fan at the top of the spray type carbon dioxide absorber 40 is turned on, and under the action of negative pressure, external air enters the spray type carbon dioxide absorber 40 from the bottom of the mixed reaction oxygen generator 30 through the air inlet passage 51, and then is discharged through the exhaust outlet at the top of the spray type carbon dioxide absorber 40.

[0075] In order to achieve higher quality air regeneration, a filter 32 is provided at the top of the spray type carbon dioxide absorber 40. The material of the filter 32 can be selected according to its function, such as water vapor filtration, poison gas filtration, etc. In implementation, the filter 32 includes at least one of a water vapor filter 32 and an alkaline gas filter 32.

[0076] In implementing the spraying operation of the spray device 411, if an independent spray nozzle is used for the spraying operation, the water pressures of the water outlets at various points on the spray nozzle are different. In this solution, the spray device 411 includes multiple spray pipes, and the water inlets of the multiple spray pipes are respectively connected to the spray pumps. The spray outlets of the multiple spray pipes are evenly distributed on the spray plane at a preset height position inside the spray type carbon dioxide absorber 40, which can achieve spraying with uniform pressure and make the sprayed solution evenly distributed.

[0077] In the implementation, the air regeneration system further includes: a control unit, which is electrically connected to the potassium superoxide agent feeder 10, the water feeder 20 and the spray carbon dioxide absorber 40. The potassium superoxide agent feeder 10, the water feeder 20 and the spray carbon dioxide absorber 40 are controlled by the control unit, and the control method is not limited to manual control of the controller, or computer control according to preset rules. In the automatic control, the air regeneration system further includes a carbon dioxide concentration sensor 81, which is electrically connected to the control unit. The air regeneration system further includes an oxygen concentration sensor 82, which is electrically connected to the control unit. The carbon dioxide concentration sensor 81 is used to sense the carbon dioxide concentration, and the oxygen concentration sensor 82 is used to sense the oxygen concentration. After the oxygen concentration is lower than the first preset concentration, the controller controls the potassium superoxide agent feeder 10 and the water feeder 20 to start oxygen production. After the carbon dioxide concentration is higher than the second preset concentration, the controller controls the spray carbon dioxide absorber 40 to start removing carbon dioxide from the air.

[0078] In the specific implementation, based on the air regeneration system in the above embodiment, the carbon dioxide absorber 40 is not limited to the structure of the spray type carbon dioxide absorber 40. Figures 7 to 13As shown, in some embodiments, the carbon dioxide absorber 40 is in the form of a spiral blade 421 structure, wherein the inlet of the carbon dioxide absorber 40 is connected to the potassium hydroxide solution outlet of the mixed reaction oxygen generator 30, and a spiral blade 421 is arranged in the carbon dioxide absorber 40, and the spiral blade 421 is connected to a drive motor 422, and the drive motor 422 is used to drive the rotation of the spiral blade 421, and the height of the outlet of the carbon dioxide absorber 40 is lower than the top of the spiral blade 421 and higher than the bottom of the spiral blade 421, and an air intake channel 51 and an exhaust channel 52 are arranged on the top of the carbon dioxide absorber 40, and the air intake channel 51 is provided with an air intake fan 53, and the carbon dioxide absorber 40 is used to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet with the carbon dioxide in the air entering through the air intake channel 51 to remove the carbon dioxide in the air.

[0079] Compared with the spray-type carbon dioxide absorber 40, the air regeneration system used in this embodiment adopts a spiral blade 421 structure, which does not need to occupy a large spray space, thereby making it easy to miniaturize the volume of the air regeneration system.

[0080] In the step of removing carbon dioxide, the driving motor 422 and the air inlet fan 53 are turned on, and the driving motor 422 drives the spiral blade 421 to rotate. Since the height of the outlet of the carbon dioxide absorber 40 is lower than the top of the spiral blade 421 and higher than the bottom of the spiral blade 421, the bottom of the spiral blade 421 is immersed in the potassium hydroxide solution, and the top of the spiral blade 421 extends out of the potassium hydroxide solution page. The rotating spiral blade 421 can carry the potassium hydroxide solution under the liquid surface to above the liquid surface, and react with the carbon dioxide in the air blown in by the air inlet fan 53. Among them, the spiral blade 421 extends from the inlet of the carbon dioxide absorber 40 to the outlet of the carbon dioxide absorber 40, so that a larger area of ​​the blade area is exposed in a smaller volume environment, which is convenient for the rapid reaction of the potassium hydroxide solution and carbon dioxide.

[0081] Among them, the potassium superoxide agent contains substances such as bonding additives, and after reacting with water, flocculent impurities will be precipitated in the potassium hydroxide solution. In the implementation, the driving motor 422 is used to drive the spiral blade 421 to rotate in the first rotation direction, and the spiral direction of the spiral blade 421 satisfies that when the spiral blade 421 rotates in the first rotation direction, the spiral blade 421 pushes the liquid in the carbon dioxide absorber 40 from the inlet of the carbon dioxide absorber 40 to the outlet of the carbon dioxide absorber 40. During the rotation process, the spiral blade 421 is not only used to remove carbon dioxide, but also can push the impurities at the bottom from the inlet of the carbon dioxide absorber 40 to the outlet of the carbon dioxide absorber 40, which can prevent the gradual accumulation of impurities at the bottom and facilitate the cleaning of impurities in the later stage. Among them, the bottom of the carbon dioxide absorber 40 is an arc-shaped bottom that matches the shape of the spiral blade 421. Compared with the carbon dioxide absorber 40 with a rectangular bottom structure, it can avoid that the spiral blade 421 cannot clean the impurities on both sides. An impurity collection area may be provided at the outlet side of the carbon dioxide absorber 40 . The impurity collection area may be a groove, a detachable collection bag, or a collection pipeline connected to the outside.

[0082] The air intake channel 51 and the exhaust channel 52 may be a pair or multiple. For example, the air intake channel 51 and the exhaust channel 52 may be multiple, and the multiple air intake channels 51 are located on one side of the axis of the spiral blade 421, and the multiple exhaust channels 52 are located on the other side of the axis of the spiral blade 421. Air can enter the carbon dioxide absorber 40 from one side of the axis of the spiral blade 421 and flow out of the carbon dioxide absorber 40 from the other side of the axis of the spiral blade 421.

[0083] The control method of the above-mentioned air regeneration system includes:

[0084] Oxygen production step: according to the oxygen production request instruction, control the potassium superoxide agent feeder 10 to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30, and control the water feeder 20 to feed water to the feed inlet of the mixed reaction oxygen generator 30;

[0085] When oxygen production is required, an oxygen generation request instruction is sent to the control device, and the control device produces oxygen according to the oxygen generation request instruction. The sending of the oxygen generation request instruction to the control device can be a manual operation or an automatic control of the monitoring system. The monitoring system monitors the ambient oxygen concentration. If the oxygen concentration is lower than the first preset concentration, an oxygen generation request instruction is sent to the control device. In automatic control, the oxygen concentration in the air is monitored; according to the size of the oxygen concentration, the dosage of the potassium superoxide agent and the amount of water delivered are adjusted. In implementation, the required oxygen generation amount varies according to the different ambient oxygen concentrations and the different sizes of the ambient space. The required oxygen generation amount can be calculated according to a preset calculation scheme, such as the oxygen generation amount is proportional to the size of the ambient space and inversely proportional to the ambient oxygen concentration. The oxygen generation request instruction includes the oxygen generation amount, and the potassium superoxide agent feeder 10 is controlled to deliver potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30, and the water feeder 20 is controlled to deliver water to the feed inlet of the mixed reaction oxygen generator 30, including:

[0086] Calculate the first mass of potassium superoxide agent to be delivered and the second mass of water to be delivered according to the oxygen production according to a preset rule;

[0087] Controlling the potassium superoxide agent feeder 10 to feed a first mass of potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator 30;

[0088] The water feeder 20 is controlled to feed the second mass of water to the feed inlet of the mixed reaction oxygen generator 30 .

[0089] Carbon dioxide absorption step: according to the carbon dioxide absorption request instruction, the drive motor 422 is started to drive the rotating blades to rotate and the air intake fan 53 is started to pass the outside air into the carbon dioxide absorber 40, so that the spiral blades 421 carry the potassium hydroxide solution in the carbon dioxide absorber 40 to above the liquid surface of the potassium hydroxide solution, react with the carbon dioxide in the air, and remove the carbon dioxide in the air.

[0090] In cases where carbon dioxide removal is required, the carbon dioxide absorption step includes:

[0091] Monitor carbon dioxide concentration in the air;

[0092] According to the carbon dioxide concentration, the speed of the drive motor 422 is adjusted. The higher the carbon dioxide concentration, the faster the speed of the drive motor 422 is adjusted. Conversely, the lower the carbon dioxide concentration, the slower the speed of the drive motor 422 is adjusted. In addition, the speed of the air intake fan 53 can also be adjusted according to the carbon dioxide concentration. The higher the carbon dioxide concentration, the faster the speed of the air intake fan 53 is adjusted. Conversely, the lower the carbon dioxide concentration, the slower the speed of the air intake fan 53 is adjusted.

[0093] In some implementations, based on the air regeneration system in the above embodiment, when the carbon dioxide absorber 40 structure of the spiral blade 421 is adopted, the surface of the traditional spiral blade 421 structure is a smooth curved structure, and the potassium hydroxide solution on the spiral blade 421 will quickly fall from the top of the spiral blade 421. In some embodiments of the present application, a liquid attachment structure 90 may be provided. That is, the carbon dioxide absorber 40 of the air regeneration system includes:

[0094] A potassium hydroxide solution chamber, wherein an air intake channel 51 and an exhaust channel 52 are provided at the top of the potassium hydroxide solution chamber, and an air intake fan 53 is provided at the air intake channel 51;

[0095] A spiral blade 421 is disposed in the potassium hydroxide solution chamber, wherein the top of the spiral blade 421 is higher than the height of the outlet of the potassium hydroxide solution chamber, and the bottom of the spiral blade 421 is lower than the height of the outlet of the potassium hydroxide solution chamber;

[0096] The driving motor 422 is used to drive the rotation of the spiral blade 421; wherein,

[0097] A liquid attachment structure 90 is disposed on the surface of the spiral blade 421 .

[0098] In this embodiment, when the spiral blade 421 is rotating, the liquid attachment structure 90 of the spiral blade 421 can attach the liquid, so that the liquid is not easy to fall from the top of the spiral blade 421, and it is easy to react with carbon dioxide in the air.

[0099] The liquid attachment structure 90 may be an integrated structure of the spiral blade 421 or a separate structure.

[0100] In practice, the liquid attachment structure 90 can be implemented from two aspects: material and structure. On the one hand, the liquid attachment structure 90 can be made of water-absorbing materials, such as sponge, etc. On the other hand, the liquid attachment structure 90 can be structured to limit or guide the flow direction of the liquid.

[0101] For example, the liquid attachment structure 90 includes a capillary water absorption groove or a capillary water absorption hole, and the capillary water absorption groove or the capillary water absorption hole adopts the principle of water absorption by capillary action. Capillary action is that there are many tiny channels in an object that act as capillaries. The combined effect of the surface tension, cohesion and adhesion of the liquid allows the water to be subjected to an upward force in the capillary of a smaller diameter. Therefore, the capillary water absorption groove or the capillary water absorption hole with the bottom immersed in the potassium hydroxide liquid level and the top above the potassium hydroxide liquid level can absorb the potassium hydroxide solution to above the potassium hydroxide liquid level. In implementation, the capillary water absorption groove spirally extends on the spiral blade 421 along the spiral direction of the spiral blade 421.

[0102] For example, the liquid attachment structure 90 includes a water storage tank 91 and a drainage tank 92, and a plurality of drainage tanks 92 are located at the periphery of the water storage tank 91 and are connected to the water storage tank 91. The depth of the water storage tank 91 can be greater than the depth of the drainage tank 92, or the width of the water storage tank 91 can be greater than the width of the drainage tank 92. When the spiral blade 421 rotates, the water storage tank 91 can be immersed in the potassium hydroxide solution to store more potassium hydroxide solution. After the water storage tank 91 rotates out of the potassium hydroxide solution liquid surface, the liquid stored therein can be guided out by the drainage tank 92.

[0103] For example, the liquid attachment structure 90 is a convex point or a concave groove 93, which has a simple preparation process, can increase the surface area of ​​the spiral blade 421, and improve the liquid attachment ability.

[0104] In implementation, the spiral blade 421 extends from the inlet of the potassium hydroxide solution chamber to the outlet of the potassium hydroxide solution chamber, so that the spiral blade 421 can maximize the surface area of ​​the entire spiral blade 421 .

[0105] In combination with the air regeneration system provided in the above-mentioned embodiment, this embodiment provides a miniaturized air regeneration system with a compact structure, small occupied space and suitable temperature of the prepared oxygen. Figures 1 to 3 For an embodiment of an air regeneration system provided in this application, please refer to Figures 1 to 3 An embodiment of the present application provides an air regeneration system, comprising:

[0106] The box body 70 includes a first accommodating chamber 71, a second accommodating chamber 72 and a third accommodating chamber 73. The first accommodating chamber 71 is adjacent to the second accommodating chamber 72, and the first accommodating chamber 71 and the second accommodating chamber 72 are communicated with each other. The third accommodating chamber 73 surrounds the outer periphery of the second accommodating chamber 72.

[0107] A potassium superoxide agent feeder 10, used for feeding potassium superoxide agent into the first containing chamber 71;

[0108] A water conveyor 20, used to convey water from the third accommodating chamber 73 to the first accommodating chamber 71;

[0109] An air intake passage 51 and an exhaust passage 52 are disposed at the top of the second accommodating chamber 72 , and an air intake fan 53 is disposed in the air intake passage 51 .

[0110] In the air regeneration system provided in this embodiment, the third storage chamber 73 for storing water for the water feeder 20 is arranged on the periphery of the second storage chamber 72 for removing carbon dioxide from the air. On the one hand, this makes the overall structure compact. On the other hand, the cold water stored in the third storage chamber can facilitate cooling of the potassium hydroxide solution in the second storage chamber 72 which has just reacted with the potassium superoxide agent and water and has a higher temperature, thereby making the temperature of the gas flowing out of the second storage chamber 72 more suitable, thereby reducing the temperature of the gas flowing out of the second storage chamber 72 to a certain extent.

[0111] In practice, the box body 70 may adopt a rectangular box body 70 structure, wherein the first accommodating chamber 71 is adjacent to the second accommodating chamber 72 and is located at the center of the top, and the third accommodating chamber 73 is located on both sides and the bottom of the second accommodating chamber 72, so that the third accommodating chamber 73 surrounds both sides and the bottom of the second accommodating chamber 72. In addition, potassium superoxide and water chemically react in the first accommodating chamber 71 to generate heat, and the third accommodating chamber 73 surrounds the outer periphery of the first accommodating chamber 71, and the cold water in the third accommodating chamber 73 cools down the potassium hydroxide solution with a higher temperature in the first accommodating chamber 71. The third accommodating chamber 73 is located on both sides of the first accommodating chamber 71, or the third accommodating chamber 73 is located at the bottom of the first accommodating chamber 71, or the third accommodating chamber 73 surrounds both sides of the second accommodating chamber 72 and the bottom of the second accommodating chamber 72.

[0112] In addition, the box body 70 also includes a fourth accommodating chamber 74, which is arranged at the bottom of the third accommodating chamber 73; a wastewater outlet is arranged at a preset height of the second accommodating chamber 72, and the wastewater outlet is connected to the fourth accommodating chamber 74. When there is more liquid in the second accommodating chamber 72, it can overflow to the fourth accommodating chamber 74 through the wastewater outlet. In implementation, a connecting channel is opened on the side wall of the box body 70, and the first accommodating chamber 71 and the fourth accommodating chamber 74 are connected to each other through the connecting channel. The first accommodating chamber 71 is located on the first side of the box body 70, and the first accommodating chamber 71 is located on the second side of the box body 70. The second side of the box body 70 is opposite to the first side of the box body 70, and the connecting channel can be arranged on the side wall of the second side of the box body 70.

[0113] A spiral blade 421 may be provided in the potassium hydroxide solution chamber, and the spiral blade 421 is driven to rotate by a driving motor 422, and the top of the spiral blade 421 is higher than the height of the wastewater outlet of the second accommodating chamber 72, and the bottom of the spiral blade 421 is lower than the height of the wastewater outlet of the second accommodating chamber 72. The potassium superoxide agent feeder 10 and the water feeder 20 are provided in the box body 70. A roller is provided at the bottom of the box body 70.

[0114] In the implementation, the controller is electrically connected to the carbon dioxide concentration sensor 81, the oxygen concentration sensor 82, the potassium superoxide agent feeder 10, the water feeder 20 and the air intake fan 53. The carbon dioxide concentration sensor 81 is used to sense the carbon dioxide concentration, and the oxygen concentration sensor 82 is used to sense the oxygen concentration. When the oxygen concentration is lower than the first preset concentration, the controller controls the potassium superoxide agent feeder 10 and the water feeder 20 to start oxygen production. When the carbon dioxide concentration is higher than the second preset concentration, the controller controls the air intake fan 53 to start removing carbon dioxide from the air.

[0115] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0116] It is understandable that the related features in the above devices can be referenced to each other. In addition, the "first", "second" and the like in the above embodiments are used to distinguish the various embodiments, and do not represent the advantages and disadvantages of the various embodiments.

[0117] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known structures and technologies are not shown in detail so as not to obscure the understanding of this description.

[0118] Similarly, it should be understood that in order to streamline the disclosure and aid in understanding one or more of the various application aspects, in the above description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed apparatus should not be interpreted as reflecting the following intention: the claimed application requires more features than the features explicitly recited in each claim. More specifically, as reflected in the claims below, the application aspects lie in less than all the features of the single embodiment disclosed above. Therefore, the claims following the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0119] It will be appreciated by those skilled in the art that the components in the device in the embodiment may be adaptively changed and arranged in one or more devices different from the embodiment. The components in the embodiment may be combined into one component, and furthermore they may be divided into a plurality of subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all components of any device so disclosed may be combined in any combination, except that at least some of such features are mutually exclusive. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0120] In addition, it will be appreciated by those skilled in the art that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and to form different embodiments. For example, in the claims below, any one of the claimed embodiments may be used in any combination. The various component embodiments of the present application may be implemented in hardware, or in combination thereof.

[0121] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation on the claims. The word "comprising" does not exclude the presence of parts or components that are not listed in the claims. The word "one" or "an" preceding a part or component does not exclude the presence of multiple such parts or components. The present application may be implemented with the aid of a device including several different parts. In a claim that lists several parts, several of these parts may be embodied by the same component item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0122] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. An air regeneration system, characterized in that: include: The box body comprises a first accommodating chamber, a second accommodating chamber and a third accommodating chamber, wherein the first accommodating chamber is adjacent to the second accommodating chamber and the first accommodating chamber and the second accommodating chamber are communicated with each other, and the third accommodating chamber surrounds the outer periphery of the second accommodating chamber; A potassium superoxide agent feeder, used for delivering potassium superoxide agent to the first containing chamber; A water conveyor, used for conveying water from the third accommodating chamber to the first accommodating chamber; A mixed reaction oxygen generator, wherein the feed inlet of the mixed reaction oxygen generator is respectively connected to the feed outlet of the potassium superoxide agent feeder and the water supply outlet of the water supply device; A carbon dioxide absorber, the inlet of which is respectively connected to the potassium hydroxide solution outlet of the mixed reaction oxygenator and the air inlet passage, and is used to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet with the carbon dioxide in the air to remove the carbon dioxide in the air; The potassium superoxide agent feeder comprises: Potassium superoxide tank; A feeding valve, wherein the inlet of the feeding valve is connected to the discharge port of the potassium superoxide agent tank, and the outlet of the feeding valve is connected to the inlet of the mixed reaction oxygen generator. The feeding valve is provided with a rotating valve core, and the rotating valve core has a first space and a second space that are independently isolated. When the rotating valve core rotates, the first space circulates through the inlet and outlet of the feeding valve, and the second space circulates through the inlet and outlet of the feeding valve.

2. The air regeneration system according to claim 1, characterized in that: A first valve is arranged between the outlet of the feeding valve and the inlet of the mixed reaction oxygen generator.

3. The air regeneration system according to claim 2, characterized in that: A positive pressure drying pipeline is arranged between the first valve and the outlet of the feeding valve.

4. The air regeneration system according to claim 1, characterized in that: The mixed reaction oxygen generator comprises: A reactor, wherein the inlet of the reactor is respectively connected to the discharge port of the potassium superoxide agent feeder and the water supply port of the water feeder; A filter, wherein the inlet of the filter is communicated with the outlet of the reactor.

5. The air regeneration system according to claim 4, characterized in that: The reactor comprises a reaction chamber, a stirring impeller and a baffle are arranged inside the reaction chamber, and the baffle is arranged between the inlet of the reaction chamber and the stirring impeller.

6. The air regeneration system according to claim 4, characterized in that: The carbon dioxide absorber is connected to the outlet of the filter.

7. A control method for the air regeneration system according to any one of claims 1 to 6, characterized in that: include: According to the oxygen generation request instruction, the potassium superoxide agent feeder is controlled to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator, and the water feeder is controlled to feed water to the feed inlet of the mixed reaction oxygen generator.

8. The control method of the air regeneration system according to claim 7, characterized in that: The oxygen generation request instruction includes the oxygen generation amount, controls the potassium superoxide agent feeder to feed potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator, and controls the water feeder to feed water to the feed inlet of the mixed reaction oxygen generator, including: Calculate the first mass of potassium superoxide agent to be delivered and the second mass of water to be delivered according to the oxygen production according to a preset rule; Controlling the potassium superoxide agent feeder to deliver a first mass of potassium superoxide agent to the feed inlet of the mixed reaction oxygen generator; The water feeder is controlled to feed the second mass of water to the feed inlet of the mixed reaction oxygen generator.

9. The control method of the air regeneration system according to claim 7, characterized in that: Also includes: According to the carbon dioxide absorption request instruction, the carbon dioxide absorber is controlled to mix the potassium hydroxide solution flowing into the potassium hydroxide solution outlet of the mixed reaction oxygenator with the carbon dioxide in the air to remove the carbon dioxide in the air.

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