Chemical oxygen self-rescuer oxygen generation module with enhanced oxygen generation efficiency

Abstract

The present application relates to a kind of oxygen production module and chemical oxygen self-rescuer of enhancing oxygen production efficiency, belong to respiratory protection technical field, solve the problem of low oxygen production efficiency, short oxygen supply time of chemical oxygen self-rescuer in prior art.The present application includes air intake gradual expansion soft mouth and slot type medicine jar, the air intake gradual expansion soft mouth is located in the upper end of the slot type medicine jar;The air intake gradual expansion soft mouth includes air intake nozzle and arc gradual expansion part, the air intake nozzle is located in the middle of the arc gradual expansion part, gradually expands to form arc gradual expansion part from the air intake nozzle downwards and outwards, the arc gradual expansion part is connected with the top of the slot type medicine jar.The inlet of the air intake gradual expansion soft mouth of the present application is relatively narrow, gradually expands to outlet outwards, it is helpful to gas to pass through an acceleration section first when entering, then gradually reduces in gradual expansion section Speed, can effectively reduce the flow velocity in slot type medicine jar, reduce the flow velocity of reaction gas flowing through the surface of oxygen production agent medicine particle, so that reaction is more uniform, and then improve oxygen production efficiency.

Description

Technical Field

[0001] This invention relates to the field of respiratory protection technology, and in particular to an oxygen generation module for a chemical oxygen self-rescue device that enhances oxygen production efficiency. Background Technology

[0002] The main working principle of a chemical oxygen self-rescue device is to utilize an oxygen-generating agent (potassium superoxide) to combine with exhaled carbon dioxide and water vapor, generating oxygen through a chemical reaction to supply the wearer's respiration. When the wearer exhales, this gas passes through the mouthpiece and breathing tube into the oxygen-generating tank. Inside the tank, the exhaled carbon dioxide and water vapor react chemically with the oxygen-generating agent to generate oxygen, which then enters the airbag. When the wearer inhales, the oxygen-enriched regenerated air stored in the airbag enters the oxygen-generating agent layer through the breathing tube or again through the oxygen-generating tank, producing a secondary reaction to generate deeply oxygen-enriched gas, which is then inhaled into the lungs, completing the respiratory cycle.

[0003] Chemical oxygen self-rescue devices, as a critical personal protective equipment, provide vital life-saving protection for personnel in emergencies such as those occurring in mines, tunnels, underground spaces, and fires. Their unique feature lies in generating oxygen chemically, achieving self-sufficient breathing support, effectively isolating personnel from external toxic and harmful gas environments. They also boast significant advantages such as small size, light weight, ease of wear, and no need for an external gas supply. These characteristics make chemical oxygen self-rescue devices an indispensable emergency self-rescue tool in high-risk work environments.

[0004] However, with the increasing demands on the performance of chemical oxygen self-rescue devices and the growing complexity of practical application scenarios, chemical oxygen self-rescue respirators face new challenges in design and application. Due to the excessively high gas velocity, the chemical reaction within the reactor often fails to achieve the ideal uniformity and completeness, which not only reduces the oxygen generation efficiency but may also affect the purity and stability of the oxygen. Furthermore, the high-velocity airflow may impact the structure of the oxygen-generating agent, causing the oxygen-generating agent material to collapse, further affecting the self-rescue device's continuous oxygen supply capacity and usage time. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide an oxygen production module and a chemical oxygen self-rescue device that enhance oxygen production efficiency, in order to solve the problems of low oxygen production efficiency and short continuous oxygen supply time of existing chemical oxygen self-rescue devices.

[0006] On the one hand, the present invention provides an oxygen production module for enhancing oxygen production efficiency, including an air inlet with a gradually expanding flexible inlet and a trough-shaped medicine tank, wherein the air inlet with the gradually expanding flexible inlet is located at the upper end of the trough-shaped medicine tank;

[0007] The air inlet gradually expanding flexible port includes an air inlet nozzle and an arc-shaped gradually expanding section. The air inlet nozzle is located in the middle of the arc-shaped gradually expanding section, which gradually expands downward and outward to form the arc-shaped gradually expanding section. The arc-shaped gradually expanding section is connected to the top of the trough-shaped medicine container.

[0008] Furthermore, it also includes an oxygen-generating agent separator, which is disposed inside the trough-shaped medicine tank.

[0009] Furthermore, the oxygen-generating agent mesh includes a first perforated plate, a second perforated plate, and a third perforated plate, wherein the second perforated plate and the third perforated plate are parallel, and the first perforated plate and the second perforated plate are perpendicular.

[0010] Furthermore, both sides of the first perforated plate, both sides of the second perforated plate, and both sides of the third perforated plate are in contact with the inner wall of the trough-shaped medicine container, and the tops of the first perforated plate, the second perforated plate, and the third perforated plate are all arc-shaped.

[0011] Furthermore, the trough-shaped medicine container includes a first flange plate, a second flange plate, a first web plate, and a second web plate. The first web plate and the second web plate are parallel, and the first flange plate and the second flange plate are symmetrically arranged at both ends of the first web plate.

[0012] Furthermore, one side of the first flange is connected to one side of the first web, the other side of the first flange is connected to one side of the second web, the other side of the first web is connected to one side of the second flange, and the other side of the second flange is connected to the other side of the second web.

[0013] Furthermore, the two sides of the first perforated plate are respectively connected to the first flange plate and the second flange plate, the two sides of the second perforated plate are respectively connected to the first web plate and the second web plate, and the two sides of the third perforated plate are respectively connected to the first web plate and the second web plate.

[0014] Furthermore, the top of the trough-shaped medicine container is provided with a first slot, and the inner wall of the trough-shaped medicine container is provided with a limiting protrusion.

[0015] On the other hand, the present invention provides a chemical oxygen self-rescue device, including an oxygen storage module and the aforementioned oxygen generation module, wherein the oxygen generation module is connected to the oxygen storage module.

[0016] Furthermore, the oxygen production module also includes an inlet / outlet gas transfer pipe, the lower port of which is connected to the inlet gradually expanding flexible port, and the left and right ports of which are respectively connected to the oxygen storage module.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The oxygen generation module of the present invention includes an inlet gradually expanding flexible port and a trough-shaped medicine tank located at the lower end of the inlet gradually expanding flexible port. The trough-shaped medicine tank is provided with an oxygen-generating agent mesh and an oxygen-generating agent. The inlet gradually expands from the inlet nozzle downwards and outwards. The inlet of the inlet gradually expands outwards to the outlet, which helps the gas to pass through an acceleration section first when entering, and then the speed gradually decreases in the expansion section. This can effectively reduce the airflow speed entering the trough-shaped medicine tank and reduce the flow rate of the reaction gas flowing over the surface of the oxygen-generating agent particles, so as to prolong the contact time between the reaction gas and the oxygen-generating agent, which is conducive to the full reaction and increases the amount of oxygen generated and the absorption rate of carbon dioxide. At the same time, it reduces the impact and disturbance of the airflow on the internal structure of the trough-shaped medicine tank and the oxygen-generating agent, which is conducive to a more stable airflow distribution, making the reaction more uniform, and thus improving the oxygen generation efficiency and the utilization rate of the agent.

[0019] (2) The present invention has a first layer of arched mesh and a second layer of arched mesh inside the gradually expanding soft inlet. The first layer of arched mesh is located above the second layer of arched mesh. The edges of the first layer of arched mesh and the second layer of arched mesh are connected and then connected to the top of the trough-shaped medicine container. The gap between the first layer of arched mesh and the second layer of arched mesh gradually decreases from the middle to the surrounding edges. After the gas exhaled by the human body is evenly dispersed through the gradually expanding soft inlet, the airflow is further subdivided by the first layer of arched mesh and the second layer of arched mesh, so that it is evenly distributed in all directions, thereby improving the uniformity and efficiency of gas mixing in the trough-shaped medicine container.

[0020] (3) This invention forms a shaped oxygen-generating agent mesh using a first perforated plate, a second perforated plate, and a third perforated plate. This effectively avoids airflow channeling. Compared to traditional radial meshes, the shaped mesh effectively reduces airflow channeling in the central region caused by the increased number of partitions. Airflow channeling leads to airflow concentration in the central region, reducing the reaction efficiency of the oxygen-generating agent in other regions. The unique layout of the shaped mesh allows the airflow to be more evenly distributed on the surface of the perforated plate, thereby improving the overall reaction efficiency. Simultaneously, the shaped mesh also supports the oxygen-generating agent and reduces collapse. During the reaction, potassium superoxide (oxygen-generating agent) undergoes physical and chemical changes due to the absorption of water vapor and carbon dioxide, resulting in a decrease in agent volume, loosening of structure, and even collapse. The shaped mesh, with its stable support structure, effectively disperses the weight of the agent, reduces the risk of collapse, ensures the continuous reaction, and improves reaction efficiency and gas quality.

[0021] (4) This invention includes a lower partition, an elastic element, and a supporting net below the oxygen-generating agent partition. The two ends of the elastic element abut against the lower partition and the supporting net, respectively. As the oxygen-generating agent reacts chemically with carbon dioxide, the internal structural strength of the oxygen-generating agent gradually decreases, potentially leading to collapse. At this time, the elastic force of the elastic element pushes the lower partition upwards, filling the cavity formed by the collapse. This effectively avoids the problem of a sharp increase in carbon dioxide concentration in the regenerated gas due to oxygen-generating agent collapse, effectively ensuring the breathing safety of the rescued personnel. Furthermore, under the action of the elastic element, the lower partition can automatically adjust its position according to the actual consumption of the oxygen-generating agent. By dynamically adjusting the position of the lower partition, the tightness of the oxygen-generating agent filling is maintained, which helps to extend the effective use time of the chemical oxygen self-rescue device, improve self-rescue efficiency, and enhance the adaptability of the chemical oxygen self-rescue device to different usage environments and conditions.

[0022] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0023] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0024] Figure 1 This is a front cross-sectional view of the oxygen generation module in specific embodiment 1;

[0025] Figure 2 This is a side cross-sectional view of the oxygen generation module in specific embodiment 1;

[0026] Figure 3 This is a schematic diagram of the intake gradually expanding flexible inlet of specific embodiment 1;

[0027] Figure 4 This is a schematic diagram of the first layer of the arched mesh in specific embodiment 1;

[0028] Figure 5 This is a schematic diagram of the second layer of the arched mesh in specific embodiment 1;

[0029] Figure 6 This is a schematic diagram of the structure of the oxygen-generating agent mesh in Specific Embodiment 1;

[0030] Figure 7 This is a schematic diagram of the trough-shaped medicine container in specific embodiment 1;

[0031] Figure 8This is a schematic diagram of potassium superoxide granules in Specific Example 1;

[0032] Figure 9 This is a schematic diagram of the connection structure between the lower partition and the elastic element in specific embodiment 1;

[0033] Figure 10 This is a schematic diagram of the structure of the bearing network in specific embodiment 1;

[0034] Figure 11 This is one of the structural schematic diagrams of the variable cross-section elastic element in specific embodiment 1;

[0035] Figure 12 This is the second structural schematic diagram of the variable cross-section elastic element in specific embodiment 1;

[0036] Figure 13 This is a schematic diagram of the connection structure between the oxygen generation module and the return gas pipe in specific embodiment 2;

[0037] Figure 14 This is a schematic diagram of the oxygen storage module in specific embodiment 2.

[0038] Figure label:

[0039] 1-Oxygen generation module; 11-Gradual expansion inlet; 111-Inlet nozzle; 112-Arc-shaped expansion section; 12-Trough-shaped medicine tank; 121-First slot; 122-First flange plate; 123-Second flange plate; 124-First web plate; 125-Second web plate; 126-Limiting protrusion; 13-Oxygen-generating agent mesh; 131-First perforated plate; 132-Second perforated plate; 133-Third perforated plate; 14-First arched mesh; 15-Second arched mesh; 16-Lower partition mesh; 161-Second slot; 17-Elastic element; 18-Bearing mesh; 181-Third slot; 19-Protective shell; 20-Inlet / outlet gas transfer pipe; 2-Oxygen storage module; 21-Gas storage bag; 22-Inlet; 23-Return pipe. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0041] Example 1

[0042] A specific embodiment of the present invention, in conjunction with Figure 1 , Figure 2 and Figure 3As shown, an oxygen generation module (hereinafter referred to as the oxygen generation module) for enhancing oxygen production efficiency is disclosed. The oxygen generation module 1 includes an air inlet gradually expanding flexible port 11, a trough-shaped medicine tank 12, and an oxygen-generating agent mesh 13. The air inlet gradually expanding flexible port 11 is located at the upper end of the trough-shaped medicine tank 12, that is, the lower end of the air inlet gradually expanding flexible port 11 is connected to the upper end of the trough-shaped medicine tank 12. The oxygen-generating agent mesh 13 is located inside the trough-shaped medicine tank 12, and the oxygen-generating agent is located in the trough-shaped medicine tank 12. The air inlet gradually expanding flexible port 11 includes an air inlet nozzle 111 and an arc-shaped gradually expanding part 112. The air inlet nozzle 111 is located in the middle of the arc-shaped gradually expanding part 112, and the arc-shaped gradually expanding part 112 is formed by gradually expanding downward and outward from the air inlet nozzle 111. The length of the arc-shaped gradually expanding part 112 is greater than its width.

[0043] During implementation, the gas exhaled by the human body is rectified through the gradually expanding soft inlet 11 and enters the trough-shaped medicine tank 12 to react chemically with the oxygen-generating agent to produce oxygen.

[0044] Compared with the prior art, the oxygen generation module 1 with enhanced oxygen generation efficiency provided in this embodiment includes an inlet gradually expanding flexible port 11 and a trough-shaped medicine tank 12 located at the lower end of the inlet gradually expanding flexible port 11. The trough-shaped medicine tank 12 is provided with an oxygen-generating agent mesh 13 and an oxygen-generating agent. The inlet gradually expanding flexible port 11 is gradually formed downward and outward from the inlet nozzle 111. The inlet of the inlet gradually expanding flexible port 11 is relatively narrow and gradually expands outward to the outlet. This helps the gas to pass through an acceleration section when entering, and then the speed gradually decreases in the expansion section. This can effectively reduce the airflow speed entering the trough-shaped medicine tank 12 and reduce the flow rate of the reaction gas over the surface of the oxygen-generating agent particles. This prolongs the contact time between the reaction gas and the oxygen-generating agent, which is conducive to the full reaction and increases the oxygen generation and carbon dioxide absorption rate. At the same time, it reduces the impact and disturbance of the airflow on the internal structure and oxygen-generating agent of the trough-shaped medicine tank 12, which is conducive to a more stable airflow distribution and a more uniform reaction, thereby improving the oxygen generation efficiency and the utilization rate of the agent.

[0045] It should be noted that in a chemical oxygen self-rescue device, the oxygen-generating agent reacts with exhaled carbon dioxide and water vapor to produce oxygen. The flow rate of the reacting gas on the agent surface directly affects the time and frequency of contact between the reacting gas and the oxygen-generating agent. Increased flow rate means reduced contact time between the reacting gas and the oxygen-generating agent. This may lead to incomplete reaction, with some carbon dioxide failing to be converted into oxygen in time, thus affecting the oxygen supply efficiency and carbon dioxide absorption efficiency of the chemical oxygen self-rescue device. Therefore, the flow rate of the reacting gas on the oxygen-generating agent surface should be minimized as much as possible, and the contact time between the reacting gas and the oxygen-generating agent should be maximized.

[0046] In order to disperse and guide airflow, such as Figure 1 and Figure 2As shown, the oxygen-generating module 1 also includes a first arched mesh 14 and a second arched mesh 15. The first arched mesh 14 is positioned above the second arched mesh 15, and both the first and second arched meshes are located above the trough-shaped medicine tank 12 and within the arc-shaped expanding portion 112. The edges of the first arched mesh 14 and the second arched mesh 15 are in contact, and a gap exists between the middle of the first and second arched meshes. The gap between the first and second arched meshes gradually decreases from the middle to the edge. In other words, the gap between the first and second arched meshes is arc-shaped in space, and its thickness (i.e., the size of the gap) gradually decreases from the middle to the surrounding edges.

[0047] In this embodiment, a first layer of arched mesh 14 and a second layer of arched mesh 15 are provided inside the gradually expanding air inlet 11. The first layer of arched mesh 14 is located above the second layer of arched mesh 15. The edges of the first layer of arched mesh 14 and the second layer of arched mesh 15 are connected and then connected to the top of the trough-shaped medicine container 12. The gap between the first layer of arched mesh 14 and the second layer of arched mesh 15 gradually decreases from the middle to the surrounding edges. After the gas exhaled by the human body is evenly dispersed through the gradually expanding air inlet 11, the airflow is further subdivided by the first layer of arched mesh 14 and the second layer of arched mesh 15, so that it is evenly distributed in all directions, thereby improving the uniformity and efficiency of gas mixing in the trough-shaped medicine container 12.

[0048] Furthermore, such as Figure 4 and Figure 5 As shown, the first layer of arch mesh 14 is a round hole arch mesh, and the second layer of arch mesh 15 is a rhomboid hole arch mesh or a hexagonal hole arch mesh. Since the intake gradually expanding soft port 11 is equipped with a double layer of arch mesh (the first layer of arch mesh 14 and the second layer of arch mesh 15), in order to avoid excessive overlap between the first layer of arch mesh 14 and the second layer of arch mesh 15, the porosity of the second layer of arch mesh 15 needs to be higher than that of the first layer of arch mesh 14. For example, the second layer of arch mesh 15 is a rhomboid hole or a hexagonal hole, while the first layer of arch mesh 14 is a round hole or an elliptical hole.

[0049] In this embodiment, the gradually expanding soft inlet 11 can ensure that the airflow diffuses more evenly in the trough-shaped medicine container 12. The double-layer arched mesh structure has multiple dense small holes or channels. These structures can further subdivide the airflow and distribute it evenly in all directions, thereby improving the uniformity and efficiency of gas mixing in the trough-shaped medicine container 12.

[0050] In order to connect with the first layer of arched netting 14 and the second layer of arched netting 15, as Figure 1 As shown, the top of the trough-shaped medicine container 12 is provided with a first slot 121, which holds the edges of the first layer of arched mesh 14 and the second layer of arched mesh 15 in the first slot 121. Under the elastic action of the first layer of arched mesh 14 and the second layer of arched mesh 15, the first layer of arched mesh 14 and the second layer of arched mesh 15 are stably connected to the trough-shaped medicine container 12.

[0051] Further, the first card slot 121 is provided at the top of the trough-shaped medicine can 12 or at the top of the inner wall of the trough-shaped medicine can 12. When the first card slot 121 is provided at the top of the trough-shaped medicine can 12, the lower inner wall of the air inlet gradually expanding soft mouth 11 is connected to the outer edge of the trough-shaped medicine can 12; when the first card slot 121 is provided at the top of the inner wall of the trough-shaped medicine can 12, the lower end of the air inlet gradually expanding soft mouth 11 is preferably connected to the top of the trough-shaped medicine can 12.

[0052] As Figure 6 shown, the oxygen generating agent separator net 13 includes a first hole plate 131, a second hole plate 132 and a third hole plate 133. The first hole plate 131, the second hole plate 132 and the third hole plate 133 are connected in a shape similar to the Chinese character 'feng'. Specifically, the first hole plate 131 is perpendicular to both the second hole plate 132 and the third hole plate 133, and the second hole plate 132 and the third hole plate 133 are parallel. Preferably, round holes are provided on all of the first hole plate 131, the second hole plate 132 and the third hole plate 133.

[0053] Further, when there is one first hole plate 131 or it is a whole plate, there are two second hole plates 132 and two third hole plates 133. The two second hole plates 132 are symmetrically provided on both sides of the first hole plate 131, and the two third hole plates 133 are symmetrically provided on both sides of the first hole plate 131. When there are two second hole plates 132 and two third hole plates 133, the first hole plate 131 includes a first section, a second section and a third section. The second section is provided between the second hole plate 132 and the third hole plate 133, and the first section and the third section are respectively provided on the other side of the second hole plate 132 and the other side of the third hole plate 133.

[0054] In order to cooperate with the arc-shaped bottom surface of the second-layer arch net 15, as Figure 6 shown, the tops of the first hole plate 131, the second hole plate 132 and the third hole plate 133 are all arc-shaped and conform to the shape of the second-layer arch net 15. After the second-layer arch net 15 is installed, the edge of the second-layer arch net 15 is supported by the trough-shaped medicine can 12, and the middle part of the second-layer arch net 15 is supported by the top of the oxygen generating agent separator net 13.

[0055] In this embodiment, by arranging the oxygen generating agent separator net 13 with a flow guiding and supporting function in the trough-shaped medicine can 12, not only the strength and stability of the oxygen generating agent separator net 13 are increased, but also the distribution of the air flow is optimized through the interaction between the hole plates. At the same time, the boundary of the oxygen generating agent separator net 13 is tightly connected to the trough-shaped medicine can 12 and the second-layer arch net 15, ensuring the smooth flow of the air flow between the oxygen generating agent separator net 13 and the trough-shaped medicine can 12, avoiding the uneven distribution of the air flow at the boundary, and thus improving the uniformity of the air flow in the entire trough-shaped medicine can 12.

[0056] The oxygen-generating agent mesh 13, which is formed by the first perforated plate 131, the second perforated plate 132, and the third perforated plate 133, can effectively avoid airflow channeling. Compared with the traditional radial mesh, the "Feng" shaped structure effectively reduces the airflow channeling phenomenon that may occur in the central area due to the increase in the number of partitions. The airflow channeling phenomenon will cause the airflow to concentrate in the central area, reducing the reaction efficiency of the oxygen-generating agent in other areas. The unique layout of the "Feng" shaped structure allows the airflow to be more evenly distributed on the surface of the perforated plate, thereby improving the overall reaction efficiency.

[0057] Meanwhile, the oxygen-generating agent mesh 13 with a shaped structure also supports the oxygen-generating agent and reduces collapse. During the reaction, the potassium superoxide agent (oxygen-generating agent) will undergo physical and chemical changes due to the absorption of water vapor and carbon dioxide, resulting in a reduction in agent volume, loosening of structure, or even collapse. The shaped oxygen-generating agent mesh 13, through its stable support structure, can effectively disperse the weight of the agent, reduce the risk of agent collapse, ensure the continuous progress of the reaction, and improve reaction efficiency and gas quality.

[0058] like Figure 7 As shown, the trough-shaped medicine container 12 includes a first flange plate 122, a second flange plate 123, a first web plate 124, and a second web plate 125. The first web plate 124 and the second web plate 125 are arranged in parallel. One side of the first flange plate 122 is connected to one side of the first web plate 124, and the other side of the first flange plate 122 is connected to one side of the second web plate 125. The other side of the first web plate 124 is connected to one side of the second flange plate 123, and the other side of the second flange plate 123 is connected to the other side of the second web plate 125. The two flange plates and the two web plates form a trough-shaped medicine container 12 with an elongated oval hole in cross-section.

[0059] Preferably, the cross-sections of the first flange plate 122 and the second flange plate 123 are both semi-circular rings, the distance between the first web plate 124 and the second web plate 125 is equal to the inner diameter of the first flange plate 122, and the inner diameter of the first flange plate 122 is equal to the inner diameter of the second flange plate 123.

[0060] To further improve the utilization rate of oxygen-generating agents, such as Figure 7 and Figure 8 As shown, the width of the trough-shaped reagent container 12 (i.e., the inner diameter of the flange) is 5-10 times the diameter of the potassium superoxide particles, ensuring uniform airflow distribution as it passes through the oxygen-generating agent bed and reducing airflow channeling and short-circuiting. For example, a trough-shaped reagent container 12 with a width of 55mm is selected for potassium superoxide particles with a diameter of approximately 6mm. It should be noted that the width of the trough-shaped reagent container 12 is the distance between the two webs, and also the inner diameter of the flange.

[0061] like Figure 7As shown, the flanges (first flange 122 and second flange 123) of the trough-shaped medicine tank 12 are U-shaped or C-shaped. The web and flanges support each other, which can effectively disperse and resist bending loads, forming a stable structure, thereby improving the overall bending strength of the trough-shaped medicine tank 12 and improving the overall stiffness of the component.

[0062] The cross-section of the trough-shaped medicine container 12 in this embodiment is a straight groove, which helps the gas to form a stable flow path inside the container 12. There are no dead corners or blind spots inside the container 12. The straight shape of the groove reduces changes in gas flow direction, helping to reduce collisions and friction within the container 12, reducing energy loss, and ensuring that the gas can fully cover the entire interior of the container 12, thereby improving the uniformity of the airflow. Simultaneously, this allows the potassium superoxide particles to form a stable bed within the container 12, maintaining good particle dispersion even during dynamic reactions, avoiding uneven reactions caused by particle aggregation. The groove size (setting the ratio of the width of the container 12 to the diameter of the potassium superoxide particles between 5 and 10) ensures that the gas has sufficient space for diffusion and mixing inside the container 12, preventing excessively concentrated or sparse local airflow.

[0063] It is worth noting that the straight-slot type medicine container 12 is flatter than the traditional cylindrical oxygen generator, giving it a significant portability advantage. It can be easily carried by hand, hung around the neck, or attached to a belt. Furthermore, the straight-slot type medicine container 12 also offers significant savings in storage space, providing users with a more compact and efficient storage solution.

[0064] like Figure 1 and Figure 2 As shown, by employing a sandwich-like layout in the axial direction using a first-layer arched mesh 14, an oxygen-generating agent layer, and a second-layer arched mesh 15, combined with a straight-groove-type tank 12, the utilization of the internal space enclosed by the tank 12 and the gradually expanding air inlet 11 is greatly optimized, avoiding any unnecessary space waste. Furthermore, by integrating the internal multi-arc surface design—that is, the smooth arc-shaped boundaries of the first-layer arched mesh 14, the second-layer arched mesh 15, and the tank 12 itself—dead space in the reaction is reduced. This not only promotes uniform airflow distribution but also ensures that the chemical reaction can occur fully and uniformly throughout the entire space, thereby improving overall efficiency and reaction quality.

[0065] Regarding the performance of the trough-shaped medicine tank 12 in this embodiment, the test data shows (as shown in Table 1) that the straight-trough type trough-shaped medicine tank 12 exhibits excellent performance in key performance indicators, such as CO2 concentration, oxygen concentration and inhalation temperature in the air bladder, significantly surpassing the data performance of the elliptical oxygen generator.

[0066] Table 1 Key performance test parameters for oxygen generators of different shapes

[0067]

[0068]

[0069] Considering that during the use of a chemical oxygen self-rescue device, as the oxygen-generating agent reacts chemically with the exhaled gas, the internal structural strength of the device will gradually decrease, potentially leading to collapse, and taking into account... Figure 1 , Figure 2 , Figure 9 and Figure 10 As shown, the oxygen-generating module 1 also includes a lower partition 16, an elastic element 17, and a supporting net 18. The lower partition 16 is located below the oxygen-generating agent partition 13, with a gap between it and the bottom of the oxygen-generating agent partition 13. The upper end of the elastic element 17 abuts against the lower partition 16, and the lower end of the elastic element 17 abuts against the supporting net 18. Under the action of the elastic element 17 and the oxygen-generating agent, the lower partition 16 slides along the inner wall of the trough-shaped medicine tank 12, thereby approaching or moving away from the lower end of the oxygen-generating agent partition 13. The elastic element 17 is in a compressed state in the initial state to adapt to the space requirements during oxygen-generating agent filling. The edge of the supporting net 18 is connected to the bottom of the trough-shaped medicine tank 12, and the supporting net 18 serves as the bottom of the trough-shaped medicine tank 12. The oxygen-generating agent is placed on the lower partition 16. Preferably, the elastic element 17 is a spring, and both the lower partition 16 and the supporting net 18 are diamond-shaped meshes. The supporting net 18 not only supports the elastic element 17 but also limits its displacement, ensuring that the lower partition net 16 does not deviate from the preset range during movement, thus guaranteeing the stability and reliability of the structure. During the use of the chemical oxygen self-rescue device, as the oxygen-generating agent reacts chemically with carbon dioxide and water vapor, the strength of its internal structure gradually decreases, potentially leading to collapse. At this time, the elastic force of the elastic element 17 pushes the lower partition net 16 upwards, filling the cavity formed by the collapse. The appearance of the cavity greatly reduces the resistance of gas passing through the oxygen-generating agent layer, causing exhaled gas to flow directly through these cavities with extremely low gas resistance, rather than reacting with the surrounding oxygen-generating agent particles. This "short-circuit" phenomenon results in a large amount of unreacted carbon dioxide being directly released into the wearer's breathing area, causing a rapid increase in carbon dioxide concentration in a short period, seriously threatening the wearer's life.

[0070] To further reduce the height of the trough-shaped medicine container 12 and make it more portable, such as Figure 11 and Figure 12 As shown, the elastic element 17 is a variable cross-section circular spring or a variable cross-section grooved spring, which can reduce the height of the spring after compression. The variable cross-section spring is only one layer high after compression, which can reduce the height reserved for this structure in the grooved medicine canister 12, making the chemical oxygen self-rescue device more portable.

[0071] In order to place the isolation net 16, as Figure 1 As shown, the inner wall of the trough-shaped medicine container 12 is provided with a limiting protrusion 126. The limiting protrusion 126 conforms to the inner wall of the trough-shaped medicine container 12 and is horizontally arranged. The edge of the lower partition net 16 can contact the limiting protrusion 126. In order to connect with the elastic member 17, the bottom of the lower partition net 16 is provided with a second slot 161, and the upper part of the supporting net 18 is provided with a third slot 181.

[0072] In this embodiment, a lower partition 16, an elastic element 17, and a supporting net 18 are provided below the oxygen-generating agent partition 13. The two ends of the elastic element 17 abut against the lower partition 16 and the supporting net 18, respectively. As the oxygen-generating agent reacts chemically with carbon dioxide, the internal structural strength of the oxygen-generating agent gradually decreases, potentially leading to collapse. At this time, the elastic force of the elastic element 17 pushes the lower partition 16 upwards, filling the cavity formed by the collapse. This effectively avoids the problem of a sharp increase in carbon dioxide concentration in the regenerated gas due to oxygen-generating agent collapse, effectively ensuring the breathing safety of the rescued personnel. Furthermore, under the action of the elastic element 17, the lower partition 16 can automatically adjust its position according to the actual consumption of the oxygen-generating agent. By dynamically adjusting the position of the lower partition 16, the tightness of the oxygen-generating agent filling is maintained, which helps to extend the effective use time of the chemical oxygen self-rescuer, improve self-rescue efficiency, and enhance the adaptability of the chemical oxygen self-rescuer to different usage environments and conditions.

[0073] Example 2

[0074] Another specific embodiment of the present invention, such as Figure 13 and Figure 14 As shown, a chemical oxygen self-rescue device is disclosed, including an oxygen generation module 1 and an oxygen storage module 2 as described in Example 1. The oxygen generation module 1 further includes a protective shell 19 and an inlet / outlet air transfer pipe 20. The protective shell 19 is located outside the inlet gradually expanding flexible port 11. The lower end of the inlet / outlet air transfer pipe 20 is connected to the inlet gradually expanding flexible port 11, and the left and right ends of the inlet / outlet air transfer pipe 20 are respectively connected to the oxygen storage module 2. Carbon dioxide exhaled by the human body enters the tank-shaped medicine container 12 through the breathing hose and the inlet / outlet air transfer pipe 20, and reacts with the potassium superoxide agent in the container to generate oxygen.

[0075] like Figure 14 As shown, the oxygen storage module 2 includes a gas storage bag 21, an air inlet 22, and return pipes 23. The gas storage bag 21 is C-shaped when unfolded. The oxygen generation module 1 is placed at the C-shaped opening, with the air inlet 22 located in the middle of the opening. Two return pipes 23 are connected to both ends of the gas storage bag 21. The lower end of the trough-shaped medicine container 12 is inserted into the air inlet 22. The two return pipes 23 are connected to the left and right ports of the inlet / outlet adapter 20, respectively. The oxygen generated in the trough-shaped medicine container 12 enters the gas storage bag 21 through the air inlet 22. When a person inhales, the oxygen flows out through the return pipes 23 on both sides for breathing. A one-way valve is installed on each return pipe 23.

[0076] In this embodiment, the gas storage bag 21 is C-shaped, and two return gas pipes 23 are arranged on both sides of the C-shaped opening to form a symmetrical double circulation structure. On the one hand, the gas storage bag 21 is conducive to reducing the temperature. The airflow in the gas storage bag 21 flows from bottom to top, which extends the path and the bag body has a large surface area, which helps to dissipate heat. On the other hand, the gas storage bag 21 is conducive to reducing resistance. The gas temperature coming out of the outlet of the trough-shaped medicine tank 12 is high, the high temperature airflow density is low, and it tends to flow upward. The airflow direction of the gas storage bag 21 conforms to the spontaneous movement law of airflow, which can effectively reduce resistance.

[0077] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An oxygen production module for enhancing oxygen production efficiency, characterized in that, It includes an air inlet gradually expanding flexible port (11) and a trough-shaped medicine container (12), wherein the air inlet gradually expanding flexible port (11) is located at the upper end of the trough-shaped medicine container (12); The air inlet gradually expanding soft port (11) includes an air inlet nozzle (111) and an arc-shaped gradually expanding part (112). The air inlet nozzle (111) is located in the middle of the arc-shaped gradually expanding part (112). The arc-shaped gradually expanding part (112) is formed by the air inlet nozzle (111) gradually expanding downward and outward. The arc-shaped gradually expanding part (112) is connected to the top of the trough-shaped medicine container (12).

2. The oxygen production module for enhancing oxygen production efficiency according to claim 1, characterized in that, It also includes an oxygen-generating agent separator (13), which is disposed inside the trough-shaped medicine tank (12).

3. The oxygen production module for enhancing oxygen production efficiency according to claim 2, characterized in that, The oxygen-generating agent mesh (13) includes a first perforated plate (131), a second perforated plate (132) and a third perforated plate (133), wherein the second perforated plate (132) and the third perforated plate (133) are parallel, and the first perforated plate (131) and the second perforated plate (132) are perpendicular.

4. The oxygen production module for enhancing oxygen production efficiency according to claim 3, characterized in that, Both sides of the first perforated plate (131), both sides of the second perforated plate (132), and both sides of the third perforated plate (133) are in contact with the inner wall of the trough-shaped medicine container (12), and the tops of the first perforated plate (131), the second perforated plate (132), and the third perforated plate (133) are all arc-shaped.

5. The oxygen production module for enhancing oxygen production efficiency according to claim 4, characterized in that, The trough-shaped medicine container (12) includes a first flange plate (122), a second flange plate (123), a first web plate (124), and a second web plate (125). The first web plate (124) and the second web plate (125) are parallel, and the first flange plate (122) and the second flange plate (123) are symmetrically arranged at both ends of the first web plate (124).

6. The oxygen production module for enhancing oxygen production efficiency according to claim 5, characterized in that, One side of the first flange (122) is connected to one side of the first web (124), the other side of the first flange (122) is connected to one side of the second web (125), the other side of the first web (124) is connected to one side of the second flange (123), and the other side of the second flange (123) is connected to the other side of the second web (125).

7. The oxygen production module for enhancing oxygen production efficiency according to claim 5, characterized in that, The two sides of the first perforated plate (131) are connected to the first flange plate (122) and the second flange plate (123) respectively. The two sides of the second perforated plate (132) are connected to the first web plate (124) and the second web plate (125) respectively. The two sides of the third perforated plate (133) are connected to the first web plate (124) and the second web plate (125) respectively.

8. The oxygen production module for enhancing oxygen production efficiency according to any one of claims 1-7, characterized in that, The top of the trough-shaped medicine container (12) is provided with a first slot (121), and the inner wall of the trough-shaped medicine container (12) is provided with a limiting protrusion (126).

9. A chemical oxygen self-rescue device, characterized in that, It includes an oxygen storage module (2) and an oxygen production module (1) as described in any one of claims 1-8, wherein the oxygen production module (1) is connected to the oxygen storage module (2).

10. The chemical oxygen self-rescue device according to claim 9, characterized in that, The oxygen production module (1) also includes an inlet / outlet gas transfer pipe (20), the lower port of which is connected to the inlet gradually expanding flexible port (11), and the left and right ports of which are respectively connected to the oxygen storage module (2).

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