Operation type chemical oxygen respirator capable of enhancing oxygen production and heat dissipation

Abstract

The invention discloses an operation type chemical oxygen respirator capable of enhancing oxygen production and heat dissipation. The operation type chemical oxygen respirator comprises a respirator shell. The transverse oxygen generation tank is arranged in the respirator shell; the expiration air bag is arranged in the respirator shell, and the expiration air bag is communicated with the oxygen generation tank through an air inlet copper pipe; the air suction air bag is communicated with the oxygen generation tank through an air return copper pipe; a mouth-nose mask is arranged on the breathing mask, one end of the mouth-nose mask is communicated with the expiration air bag through a breathing corrugated pipe, and the other end of the mouth-nose mask is communicated with the inspiration air bag through a second breathing corrugated pipe. The chemical oxygen respirator has the advantages that the layout of the chemical oxygen respirator is more compact, the axial size of the respirator is reduced, the overall weight is reduced, and the flexibility and comfort of operators are improved.

Description

Technical Field

[0001] The present invention relates to the technical fields of mechanical manufacturing and breathing apparatuses, and more particularly, to an operating chemical oxygen breathing apparatus with enhanced oxygen production and heat dissipation. Background Art

[0002] Currently, the working principle of operating chemical oxygen breathing apparatuses mainly relies on chemical reactions to produce oxygen to meet the breathing needs of users in specific environments. The interior of the breathing apparatus is filled with oxygen-containing chemical substances, such as superoxides or peroxides. When these chemical substances react with the carbon dioxide and water vapor exhaled by the human body under suitable conditions, they release oxygen while absorbing carbon dioxide. The oxygen generated by these reactions is collected and stored in the airbag of the breathing apparatus for the user to inhale.

[0003] During use, the user breathes through the face mask of the breathing apparatus. When inhaling, the oxygen in the airbag enters the user's lungs through the conduit and face mask of the breathing apparatus to meet their breathing needs. At the same time, the exhaled gas of the user contains carbon dioxide and water vapor, and these gases will enter the interior of the breathing apparatus through the conduit and continue to react with the chemical oxygen generator to produce more oxygen.

[0004] In this way, the operating chemical oxygen breathing apparatus can continuously provide fresh oxygen for the user and ensure their breathing safety in special working environments. This type of breathing apparatus is particularly suitable for occasions that require long-term, high-intensity work, and where the oxygen concentration in the environment is insufficient or there are other harmful gases, such as mines, tunnels, fire rescue, etc. It should be noted that although the operating chemical oxygen breathing apparatus can provide effective breathing protection, during use, attention should still be paid to its working state and the remaining oxygen volume, and the chemical oxygen generator should be replaced or replenished in a timely manner to ensure its continuous and stable provision of breathing support for the user.

[0005] In the prior art, although the existing operating chemical oxygen breathing apparatuses meet the breathing protection requirements in specific working environments to a certain extent, there are still some obvious drawbacks. The most prominent one is the problem that the inhalation temperature caused by high-temperature chemical reactions is difficult to reduce to a suitable breathing temperature for the human body, which can make the operators feel uncomfortable, such as dry and stinging throats, seriously affecting the breathing comfort. In addition, high-temperature oxygen may reduce the oxygen absorption efficiency of the human body because the lungs require certain temperature and humidity conditions when absorbing oxygen. High-temperature oxygen may disrupt these conditions, resulting in the oxygen not being effectively absorbed and utilized by the body. At the same time, when the temperature of the inhaled oxygen is too high, the human body needs to consume more energy to regulate body temperature, which will increase the burden on the body, especially in emergency or high physical exertion situations, and may further exacerbate the sense of fatigue in the body.

[0006] Secondly, the large weight of the working chemical oxygen respirator is a problem that cannot be ignored. Since the respirator needs to be loaded with sufficient chemical oxygen generators and other necessary components inside, such as gas storage devices, filtration systems, face masks, etc., its overall weight is relatively large. This places a great burden on the physical strength of the operator when wearing the respirator for a long time to perform tasks. Especially in situations where crawling, bending, or performing other complex movements are required, it is easier to feel fatigued and uncomfortable.

[0007] In addition, with the increase in the amount of chemical oxygen generator loaded in the canister and the extension of the continuous operation time, the management of the chemical oxygen generator inside becomes particularly crucial. In this case, the chemical oxygen generator is prone to caking and collapse inside the canister, especially near the air inlet. This caking not only leads to uneven dispersion of the air flow but may even block the air inlet channel, thereby significantly increasing the exhalation resistance of the user. The increase in exhalation resistance not only increases the physical exertion of the user but also reduces the non-uniformity of the chemical oxygen generator reaction, resulting in a decrease in the oxygen generation efficiency. This causes the oxygen content in the airbag to decrease while the carbon dioxide concentration rises significantly. High concentrations of carbon dioxide not only affect the breathing comfort of the user but may also pose a threat to health, such as causing symptoms like headache, dizziness, and rapid heartbeat, and even leading to asphyxiation in severe cases.

[0008] Finally, the large volume of the working chemical oxygen respirator also limits its use in confined spaces. In some narrow tunnels, caves, or restricted workplaces, operators need to carry various tools and equipment, and the large volume of the respirator may occupy valuable space, increasing the difficulty of the operation. The main reason for this problem is that the axial dimension of the working chemical oxygen respirator is too long. Since the respirator needs to accommodate a relatively long vertically placed chemical oxygen generator canister, gas ducts, and other components inside, its overall length is relatively long. This means that when operating in a confined space, the respirator may occupy too much space (including the movement space of the head), restricting the movement range of the operator. At the same time, the overly long axial dimension may also increase the inconvenience during the movement and carrying of the respirator, and even increase the risk of accidental collision or damage. The problems existing in the existing working chemical oxygen respirators in terms of weight and volume limit their use in confined spaces, while the inhalation temperature and phenomena such as caking and collapse of the chemical oxygen generator will significantly affect the comfort and health of the operator. To improve these problems, future research and development should focus on reducing the weight and volume of the respirator, optimizing the axial dimension, improving the cooling device, and solving problems such as collapse and caking of the chemical oxygen generator inside the canister.

[0009] In summary, there are at least one of the following technical problems:

[0010] It is difficult to reduce the inhalation temperature caused by high-temperature chemical reactions to a breathing temperature suitable for the human body;

[0011] The working chemical oxygen respirator is heavy;

[0012] The oxygen generator is prone to caking and collapse inside the medicine canister;

[0013] In some narrow tunnels, caves or confined workplaces, operators need to carry various tools and equipment, and the large volume of the breathing apparatus may occupy valuable space and increase the difficulty of the operation. Summary of the Invention

[0014] The main object of the present invention is to provide an operation-type chemical oxygen breathing apparatus with enhanced oxygen production and heat dissipation, so as to solve at least one technical problem in the prior art: it is difficult to reduce the inhalation temperature caused by high-temperature chemical reactions to a breathing temperature suitable for the human body; the weight of the operation-type chemical oxygen breathing apparatus is large; the oxygen generator is prone to caking and collapse inside the medicine canister; in some narrow tunnels, caves or confined workplaces, operators need to carry various tools and equipment, and the large volume of the breathing apparatus may occupy valuable space and increase the difficulty of the operation.

[0015] To achieve the above object, according to one aspect of the present invention, there is provided an operation-type chemical oxygen breathing apparatus with enhanced oxygen production and heat dissipation, including:

[0016] A breathing apparatus housing;

[0017] A horizontally placed oxygen generator canister, which is arranged inside the breathing apparatus housing;

[0018] An exhalation airbag, which is arranged inside the breathing apparatus housing, and the exhalation airbag is communicated with the oxygen generator canister through an intake copper pipe;

[0019] An inhalation airbag, which is communicated with the oxygen generator canister through a return air copper pipe;

[0020] A breathing mask, on which a mouth and nose mask is provided, one end of the mouth and nose mask is communicated with the exhalation airbag through a breathing bellows, and the other end is communicated with the inhalation airbag through a second breathing bellows.

[0021] Preferably, the return air copper pipe is provided with first heat dissipation fins.

[0022] Preferably, the exhalation airbag is provided with a one-way valve.

[0023] Preferably, it further includes an electronic distributor, and the electronic distributor is arranged inside the breathing apparatus housing.

[0024] Preferably, the air exhaled by the human body sequentially enters the horizontally placed oxygen generator canister through the mouth and nose mask, the breathing bellows, the exhalation airbag, the fan and the intake copper pipe.

[0025] Preferably, the horizontally placed oxygen generator canister is provided with an oxygen generator, and the oxygen generator reacts with water vapor and carbon dioxide in the air exhaled by the human body to generate oxygen.

[0026] Preferably, the oxygen generated by the horizontally placed oxygen generator is inhaled by the human body in sequence through a return air copper tube, a dust filter, an air suction airbag, a sensor, an air suction corrugated pipe, and an oronasal mask.

[0027] Preferably, the horizontally placed oxygen generator includes:

[0028] An outer cylinder of the oxygen generator, with an oxygen generator air inlet at one end and an oxygen generator air outlet at the other end;

[0029] An inner cylinder of the oxygen generator, which is arranged inside the outer cylinder of the oxygen generator;

[0030] A return air orifice plate cylinder, which is arranged at the axis position of the inner cylinder;

[0031] An air inlet orifice plate, including several pieces, and the several air inlet orifice plates are arranged around the return air orifice plate cylinder.

[0032] Preferably, a conical filter screen is provided in the return air orifice plate cylinder.

[0033] Preferably, a radiator is provided on the horizontally placed oxygen generator. The radiator includes fins, the fins are fixed on a fixing plate, and a VC heat spreader is provided on the fins.

[0034] Applying the technical solution of the present invention has the following technical effects:

[0035] It has the technical effects of making the layout of the chemical oxygen respirator more compact, reducing the axial dimension of the respirator, reducing the overall weight, and increasing the flexibility and comfort of the operator. It reduces the problem of caking that may occur during the reaction of the oxygen generating agent, such as water absorption expansion and caking, resulting in a decrease in the porosity of the bed layer and an increase in the flow resistance, thereby affecting the uniformity and efficiency of the reaction. At the same time, it improves the uniformity of gas distribution and reaction efficiency. By adopting the design of the VC heat spreader and fins, it effectively deals with the high temperature generated during the operation of the oxygen generator. The radiator is installed through specific holes, utilizes the high thermal conductivity of the VC heat spreader, combines the fins and the heat dissipation holes, and dissipates heat efficiently to ensure the stable operation of the oxygen generator and extend the service life of the respirator. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0037] Figure 1 Shows a schematic structural diagram of an operating type chemical oxygen respirator with enhanced oxygen production and enhanced heat dissipation according to the present invention;

[0038] Figure 2 Shows Figure 1Structural view of the oxygen - generating canister of the working - type chemical oxygen respirator with enhanced oxygen production and heat dissipation

[0039] Figure 3 Shows Figure 1 Internal structural view of the oxygen - generating canister of the working - type chemical oxygen respirator with enhanced oxygen production and heat dissipation

[0040] Figure 4 Shows Figure 1 Structural view of the air inlet hole plate of the working - type chemical oxygen respirator with enhanced oxygen production and heat dissipation

[0041] Figure 5 Shows Figure 1 Structural view of the radiator of the working - type chemical oxygen respirator with enhanced oxygen production and heat dissipation

[0042] Figure 6 Shows Figure 1 Cooperating structural view of the radiator and the oxygen - generating canister of the working - type chemical oxygen respirator with enhanced oxygen production and heat dissipation

[0043] Among them, the above - mentioned drawings include the following reference numerals:

[0044] Respirator housing 1; Horizontally placed oxygen - generating canister 2; Fan 3; Inspiratory airbag 4; Sensor 5; Electronic distributor 6; Respiratory mask 7; Intake copper tube 8; Return air copper tube 9; First heat - dissipating fin 10; Expiratory airbag 11; Check valve 12; Expiratory bellows 13; Inspiratory bellows 14; Mouth - nose mask 15; Dust filter 16; Modular structure base 17; Return air hole plate cylinder 18; Air inlet hole plate 19; Outer cylinder of oxygen - generating canister 20; Inner cylinder of oxygen - generating canister 21; Radial fold 22; Oxygen - generating canister air inlet 23; Oxygen - generating canister air outlet 24; Gas diffusion layer 25; Conical filter net 26; Second heat - dissipating fin 27; Fixed plate 28; VC heat - spreading plate 29 Detailed implementation manners

[0045] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments

[0046] Such as Figures 1 to 6As shown in the figure, an embodiment of the present invention provides a working chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation, including: a respirator housing 1; a horizontally arranged oxygen generating canister 2, the horizontally arranged oxygen generating canister 2 is arranged in the respirator housing 1; an exhalation airbag 11, the exhalation airbag 11 is arranged in the respirator housing 1, and the exhalation airbag 11 is communicated with the oxygen generating canister through an intake copper pipe 8; an inhalation airbag 4, the inhalation airbag 4 is communicated with the oxygen generating canister through a return air copper pipe 9; a breathing mask 7, a mouth and nose mask 15 is arranged on the breathing mask 7, one end of the mouth and nose mask 15 is communicated with the exhalation airbag 11 through a breathing corrugated pipe, and the other end is communicated with the inhalation airbag 4 through a second breathing corrugated pipe.

[0047] In this embodiment, the horizontally arranged oxygen generating canister 2 is arranged in the respirator housing 1; the exhalation airbag 11 is arranged in the respirator housing 1, and the exhalation airbag 11 is communicated with the oxygen generating canister through an intake copper pipe 8; the inhalation airbag 4 is communicated with the oxygen generating canister through a return air copper pipe 9; a first heat dissipation fin 10 is arranged on the return air copper pipe 9. A mouth and nose mask 15 is arranged on the breathing mask 7, one end of the mouth and nose mask 15 is communicated with the exhalation airbag 11 through a breathing corrugated pipe, and the other end is communicated with the inhalation airbag 4 through a second breathing corrugated pipe. A one-way valve 12 is arranged on the exhalation airbag 11. An electronic distributor 6 is further included, and the electronic distributor 6 is arranged in the respirator housing 1. The air exhaled by the human body sequentially enters the oxygen generating canister through the mouth and nose mask 15, the breathing corrugated pipe, the exhalation airbag 11, the blower 3 and the intake copper pipe 8. An oxygen generating agent is arranged in the oxygen generating canister, and the oxygen generating agent reacts with water vapor and carbon dioxide in the air exhaled by the human body to generate oxygen. The oxygen generated by the horizontally arranged oxygen generating canister 2 is sequentially inhaled by the human body through the return air copper pipe 9, the dust filter 16, the inhalation airbag 4, the sensor 5, the inhalation corrugated pipe 14 and the mouth and nose mask 15.

[0048] In this embodiment, the oxygen generating canister includes an oxygen generating canister outer cylinder 20, one end of the oxygen generating canister outer cylinder 20 is provided with an oxygen generating canister intake port 23, and the other end is provided with an oxygen generating canister outlet port 24; an oxygen generating canister inner cylinder 21, the oxygen generating canister inner cylinder 21 is arranged in the oxygen generating canister outer cylinder 20; a return air hole plate column cylinder 18, the return air hole plate column cylinder 18 is arranged at the inner cylinder axis position; an intake hole plate 19, there are several intake hole plates 19, and several intake hole plates 19 are arranged around the return air hole plate column cylinder. A conical filter screen 26 is arranged in the return air hole plate column cylinder 18. A radiator is arranged on the oxygen generating canister, and the radiator includes fins, the fins are fixed on a fixing plate 28, and a VC heat spreader 29 is arranged on the fins.

[0049] Among them, the working-type chemical oxygen breathing apparatus: The working-type chemical oxygen breathing apparatus is a highly efficient and long-duration respiratory protection device that can provide necessary breathing support for operators in various harsh environments and ensure their life safety. Oxygen generation canister: The oxygen generation canister in the chemical oxygen breathing apparatus is an important device to ensure the wearer's breathing in an oxygen-deficient environment. Its core function is to generate oxygen through chemical reactions. It mainly uses chemical substances such as alkali metal peroxides and superoxides to react with the water vapor and carbon dioxide exhaled by the human body, thereby releasing oxygen to meet the breathing needs of the wearer. The oxygen generation canister makes the layout of the oxygen generation canister more compact, reduces the axial dimension of the breathing apparatus, thereby reducing the overall weight, making the breathing apparatus more portable when carried and moved, and also reducing the burden on the operator and improving the operation efficiency. VC vapor chamber 29: The vapor chamber cooling technology achieves efficient heat conduction and cooling effects through its unique two-phase circulation system. In the application of the refrigeration module of the chemical oxygen breathing apparatus, the VC vapor chamber 29 has shown excellent performance, effectively ensuring the reduction of the inhalation temperature of the breathing apparatus.

[0050] In this embodiment, aiming at the actual demand of a short operation time, a horizontally placed oxygen generation canister 2 is adopted to reduce the overall weight of the breathing apparatus, improve the wearing comfort, and at the same time meet the demand for breathing protection in a short time. By horizontally placing the oxygen generation canister 2, the problem of weight increase caused by paralleling multiple oxygen generation canisters can be effectively avoided. Compared with the design of a vertically placed oxygen generation canister, the horizontally placed oxygen generation canister 2 makes the layout of the oxygen generation canister more compact, reduces the axial dimension of the breathing apparatus, thereby reducing the overall weight. This not only makes the breathing apparatus more portable when carried and moved, but also reduces the burden on the operator, improves the wearing comfort, and improves the operation efficiency.

[0051] When using a chemical oxygen self-rescuer, the traditional intake air screen usually adopts a planar design. When the breathing volume increases, the air flow speed accelerates, and the oxygen generating agent particles are likely to accumulate and form caking on the surface of the screen. This not only increases the breathing resistance, making it difficult for users to breathe, but also affects the uniform distribution of the air flow, resulting in the oxygen generating agent not being able to fully exert its oxygen generation effect. To overcome these problems, this patent proposes a radial structure intake air screen design. This screen increases the contact area between the screen and the oxygen generating agent through a carefully designed radial shape. Compared with a planar screen, the radial intake air screen has a larger surface area in the same volume, thereby improving the contact efficiency between the air flow and the oxygen generating agent. When the air flow passes through the radial intake air screen, its flow path is changed, reducing the accumulation and caking of the oxygen generating agent particles. In addition, the design of the radial intake air screen helps to improve the uniformity of the air flow. Due to the curved radial shape of the screen surface, the air flow will be dispersed and redistributed when passing through the screen, making the air flow more uniform throughout the oxygen generating agent bed layer. This can not only improve the utilization rate of the oxygen generating agent, but also reduce the breathing resistance, making it more smooth for users to breathe.

[0052] In the design and operation of chemical oxygen breathing apparatuses, the horizontally placed oxygen generator canister 2 is a particularly critical component. Its temperature often reaches above 490 K during operation, making it the hottest part inside the breathing apparatus. This high temperature not only increases the inhalation temperature, causing discomfort to the user, but also may damage other structures of the breathing apparatus, thus affecting its safety and reliability. To effectively control the temperature of the oxygen generator canister, traditional heat dissipation methods include using phase change materials such as silica and paraffin. However, these phase change materials have certain limitations, such as small latent heat of phase change, low energy storage density, high encapsulation difficulty, and high cost, making their effects in practical engineering applications less than ideal. To solve this problem, this patent proposes an innovative heat dissipation solution: adopting a combination of a VC (Vapor Chamber) vapor chamber heat pipe and fins. The VC vapor chamber heat pipe 29 is a highly efficient heat conduction device with extremely high thermal conductivity and the characteristics of being thin and light, capable of quickly and evenly transferring heat. By closely attaching the vapor chamber heat pipe to the oxygen generator canister, the heat generated by the oxygen generator canister can be effectively conducted quickly. At the same time, combined with the fin design, the heat dissipation effect can be further enhanced by means of convective heat transfer. The fins can increase the heat dissipation area, making it easier for heat to exchange with the surrounding environment, thereby reducing the temperature of the oxygen generator canister. This combination method is not only simple in structure and easy to implement, but also has high heat transfer efficiency, capable of meeting the strict requirements of chemical oxygen breathing apparatuses in terms of heat dissipation. Compared with the traditional phase change material heat dissipation solution, the heat dissipation solution of the VC vapor chamber heat pipe 29 plus fins proposed in this paper has more significant advantages. It can not only effectively control the temperature of the oxygen generator canister, but also reduce the inhalation temperature and reduce the damage of high temperature to other structures of the breathing apparatus. Therefore, this solution has broad application prospects and important engineering practice value.

[0053] This embodiment includes a face mask, a housing, an oxygen generator canister, and a pre-exhaust airbag. The pre-exhaust airbag, as the main component of the chemical oxygen breathing apparatus, is used to store the gas inhaled by the human body and the oxygen generated by the oxygen generator canister. The pre-exhaust airbag consists of an exhalation airbag 11 and an inhalation airbag 4. Among them, the exhalation airbag 11 is connected to an exhalation bellows 13 and a blower 3. The air exhaled by the human body sequentially passes through a mouth-nose mask 15, an exhalation bellows 13, an exhalation airbag 11, a blower 3, and an intake copper tube 8 and enters the oxygen generator canister. Oxygen is generated by the reaction of the oxygen generating agent with water vapor and carbon dioxide in the gas. The generated oxygen sequentially passes through a return air copper tube 9, a dust filter 16, an inhalation airbag 4, a sensor 5, an inhalation bellows 14, and a mouth-nose mask 15 and is inhaled by the human body. Thus, a breathing cycle is completed.

[0054] Since the present invention aims to meet the more convenient and comfortable working needs of workers during medium working hours, the chemical oxygen respirator has less demand for the amount of medicine than the long-duration working type chemical oxygen respirator. On the premise that the demand for the amount of medicine in the oxygen generating canister is not large, the present invention proposes a design scheme of horizontally arranging the oxygen generating canister 2. This design scheme can make the structure of the chemical oxygen respirator more compact, reduce the axial dimension of the respirator, and also reduce the mass of the housing. Its volume is equivalent to the size of a middle school student's backpack. This makes the chemical oxygen respirator more portable when carried and moved, enables the worker to work conveniently in a narrow working environment, improves the comfort of the wearer, and helps to improve work efficiency. In addition, in the design scheme of horizontally arranging the oxygen generating canister 2, since the space occupied by the oxygen generating canister in the respirator is relatively reduced, this design scheme also makes it possible to quickly replace the oxygen generating canister outside the housing.

[0055] In this embodiment, the chemical oxygen respirator with a horizontally arranged oxygen generating canister 2 includes a respirator housing 1, an oxygen generating canister, a blower 3, an inhalation airbag 4, a sensor 5, an electronic distributor 6, a breathing mask 7, an intake copper tube 8, a return air copper tube 9, a first heat dissipation fin 10, an exhalation airbag 11, a one-way valve 12, an exhalation bellows 13, an inhalation bellows 14, a nose and mouth mask 15, a dust filter 16, and a modular structure. The structure of the horizontally arranged oxygen generating canister 2 is as Figure 2 shown. The intake orifice plate 19 is used to isolate the oxygen generating agent from the inner cylinder wall of the oxygen generating canister, and has a cavity that allows the intake air flow to pass through. As Figure 3 shown, the intake air flow enters the interior of the oxygen generating canister through the intake port, the gas diffusion layer 25, the cavity, and the radial intake orifice plate 19 with a surface area similar to that of the oxygen generating canister wall, and undergoes chemical reactions shown in formulas (1), (2), and (3) with the oxygen generating agent. The generated oxygen and the residual intake gas flow out through the return orifice plate column cylinder 18 and the outlet and enter the return air copper tube 9. Usually, this intake orifice plate 19 is a cylindrical structure without wrinkles. Although, as shown in the chemical reactions (1), (2), and (3), the water vapor in the intake gas plays a catalytic role in the reaction of the oxygen generating agent KO2 to produce oxygen, during the reaction, the superoxide potassium pellets will still absorb water and expand and agglomerate, resulting in caking, reducing the porosity of the bed layer, increasing the flow resistance, and causing uneven reaction of the superoxide potassium. Therefore, this patent proposes an intake orifice plate 19 with radial wrinkles (as Figure 4As shown). The cross-section of the intake hole plate 19 is designed in a radial shape. The radial pleat design not only increases the contact area between the intake hole plate 19 and the oxygen-generating agent KO2, but also helps to evenly distribute the gas. Due to the presence of the pleats, the airflow will be guided to more directions and levels when passing through, thereby reducing the local resistance of the gas flow and improving the reaction efficiency of the oxygen-generating agent. The pleat design can also, to a certain extent, slow down the caking phenomenon caused by the water absorption and expansion of the oxygen-generating agent. Since the pleats provide more space, even if the oxygen-generating agent expands to a certain extent, its space occupancy will not be as significant as that of a traditional flat plate, thereby reducing the risk of a decrease in the bed porosity and an increase in the flow resistance.

[0056] H2O + 2KO2→2KOH + 1.5O2, 39.4 kJ, (1)

[0057] CO2 + 2KOH→K2CO3 + H2O, 141.1 kJ, (2)

[0058] CO2 + 2KO2→K2CO3 + 1.5O2, 180.5 kJ. (3)

[0059] In this embodiment, the oxygen generation tank includes a return air hole plate cylinder 18, an intake hole plate 19, an outer cylinder 20 of the oxygen generation tank, an inner cylinder 21 of the oxygen generation tank, a radial pleat 22, an intake port 23 of the oxygen generation tank, an outlet port 24 of the oxygen generation tank, a gas diffusion layer 25, and a conical filter screen 26.

[0060] In this embodiment, the core components of the radiator are composed of a VC heat pipe 29 and fins, as Figure 5As shown. The schematic diagram of the combined installation of the oxygen - generating canister and the radiator clearly shows the connection method between them. The radiator is closely fitted with the upper shell of the chemical oxygen respirator through specific holes. During the operation of the oxygen - generating canister, the surface temperature can reach above 450K at the highest. The high - temperature gas generated by the chemical reaction in the oxygen - generating canister is the key factor causing the increase in the inhalation temperature of the chemical oxygen respirator. At the same time, the high temperature will also cause the deformation of the respirator's shell, and the rapid aging of the oxygen - generating canister fasteners and some rubber (silicone) parts, reducing the service life of these components. Therefore, it is necessary to design an oxygen - generating canister radiator to dissipate heat from the oxygen - generating canister. The VC vapor chamber 29, with its extremely high thermal conductivity and thin and light design, has been widely used in fields such as communication and aerospace. In addition, the fin design on the radiator further enhances the heat dissipation effect. The fins can increase the surface area of the radiator, thereby increasing the contact area with the air and improving the heat exchange efficiency. At the same time, the shape and arrangement of the fins are also optimized to ensure that the air can flow smoothly through the radiator and take away more heat. In this radiator design, the combination of the VC vapor chamber 29, the fins, and the shell heat dissipation holes can greatly enhance the performance of the radiator, efficiently discharging the heat generated by the oxygen - generating canister through air convection, thereby ensuring the stable operation of the oxygen - generating canister and extending the service life of related components. In addition, the oxygen - generating canister radiator of the present invention also has good compatibility and installation convenience. The radiator can be fitted with the oxygen - generating canister through specific holes without modifying the oxygen - generating canister. This design not only simplifies the installation process but also ensures the stability and reliability of the radiator.

[0061] In this embodiment, to reduce the exhalation temperature, three cooling structures are also provided to achieve a multi - stage cooling structure. First, in the present invention, the intake copper tube 8 and the return air copper tube 9 with good heat dissipation performance are used for connection in the path connecting the oxygen - generating canister. Second, since the temperature of the gas at the outlet of the oxygen - generating canister is relatively high and will reach 450K in the later stage of the reaction, the present invention is provided with a fin structure on the return air copper tube 9. This structure can increase the heat exchange area with the air, strengthen the heat dissipation of the return air path, effectively reduce the temperature of the gas entering the dust filter 16, prevent the HEPA filter structure in the filter from being damaged by high temperature, and reduce the dust filtering effect. Third, the present invention reserves a sufficient long stroke at the inlet and outlet of the inhalation airbag 4, so that the oxygen generated in the oxygen - generating canister can fully contact the gas exhaled by the human body in the exhalation airbag 11 and the air outside the airbag, further reducing the temperature of the return air, achieving the purpose of reducing the inhalation temperature and improving the breathing comfort of the operator. The oxygen - generating canister radiator is composed of the second cooling fins 27, the fixing plate 28, and the VC vapor chamber 29.

[0062] In addition, the inlet and outlet of the pre-exhaust airbag in the present invention adopt a modular structure base 17 with exactly the same structure. This base can simultaneously accommodate the installation of modules such as the fan 3, the dust filter 16, and the sensor 5. The design and implementation of this modular structure take into account the compatibility and stability of each module, reduce the number of components of the respirator, lower the process difficulty, and ensure the stability and reliability of the entire system.

[0063] Since the design of the horizontally placed oxygen generating tank 2 provides the possibility for a quick-disassembly and quick-assembly oxygen generating tank outside the respirator, the present invention is changed to a structure of a plug that allows the oxygen generating tank to be quickly disassembled in a direction perpendicular to the chemical oxygen respirator, and a hinge mechanism is provided at the upper cover or the lower bottom shell of the respirator for fixing the oxygen generating tank and quickly replacing it outside the shell.

[0064] Adding a fan 3 on the side of the oxygen generating tank radiator for forced convection can further improve the performance of the radiator. The fan 3 can generate a forced air flow, accelerating the air flow around the radiator, thereby more effectively taking away the heat generated by the oxygen generating tank. This way of forced convection can significantly improve the heat dissipation efficiency and ensure the stable operation of the oxygen generating tank under high-temperature working conditions. At the same time, the addition of the fan 3 also makes the design of the radiator more flexible and efficient, suitable for different working environments and heat dissipation requirements.

[0065] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0066] It has the technical effects of making the layout of the chemical oxygen respirator more compact, reducing the axial dimension of the respirator, lowering the overall weight, and increasing the flexibility and comfort of the operator. It reduces the caking problem that the oxygen generating agent may absorb water and expand and cake during the reaction process, resulting in a decrease in the porosity of the bed layer and an increase in the flow resistance, thereby affecting the uniformity and efficiency of the reaction. At the same time, it improves the uniformity of gas distribution and reaction efficiency. By adopting the VC heat pipe 29 and fin design, it effectively deals with the high temperature generated during the operation of the oxygen generating tank. The radiator is installed through specific holes, utilizing the high thermal conductivity of the VC heat pipe 29, combined with fins and heat dissipation holes, for efficient heat dissipation, ensuring the stable operation of the oxygen generating tank and extending the service life of the respirator.

[0067] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An operating chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation, characterized in that, Comprising: A breathing apparatus housing; A horizontally placed oxygen - generating tank, which is arranged inside the breathing apparatus housing; An exhalation airbag, which is arranged inside the breathing apparatus housing, and the exhalation airbag is communicated with the oxygen - generating tank through an intake copper tube; An inhalation airbag, which is communicated with the oxygen - generating tank through a return air copper tube; A breathing mask, on which a nose - mouth mask is provided. One end of the nose - mouth mask is communicated with the exhalation airbag through a breathing bellows, and the other end is communicated with the inhalation airbag through a second breathing bellows.

2. The working chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation according to claim 1, wherein The return air copper tube is provided with first heat - dissipating fins.

3. The working chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation according to claim 1, characterized in that, The exhalation airbag is provided with a one - way valve.

4. The working chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation according to claim 1, characterized in that It further includes an electronic distributor, which is arranged inside the breathing apparatus housing.

5. The working chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation according to claim 1, characterized in that, The air exhaled by the human body sequentially enters the horizontally placed oxygen - generating tank through the nose - mouth mask, the breathing bellows, the exhalation airbag, a blower and the intake copper tube.

6. The working chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation according to claim 1, characterized in that, The horizontally placed oxygen - generating tank is provided with an oxygen - generating agent, and the oxygen - generating agent reacts with water vapor and carbon dioxide in the air exhaled by the human body to generate oxygen.

7. The working chemical oxygen respirator for enhancing oxygen production and strengthening heat dissipation according to claim 1, characterized in that, The oxygen generated by the horizontally placed oxygen - generating tank is sequentially inhaled by the human body through the return air copper tube, a dust filter, the inhalation airbag, a sensor, an inhalation bellows and the nose - mouth mask.

8. The working chemical oxygen respirator for enhancing oxygen production and heat dissipation according to claim 1, characterized in that, The horizontally placed oxygen - generating tank includes: An oxygen - generating tank outer cylinder, one end of which is provided with an oxygen - generating tank air inlet, and the other end is provided with an oxygen - generating tank air outlet; An oxygen - generating tank inner cylinder, which is arranged inside the oxygen - generating tank outer cylinder; A return air hole plate cylinder, which is arranged at the axis position of the inner cylinder; Intake air holes plates, and there are several intake air holes plates, and the several intake air holes plates are arranged around the return air hole plate cylinder.

9. The working chemical oxygen breathing apparatus for enhancing oxygen production and strengthening heat dissipation according to claim 8, characterized in that, A conical filter screen is arranged in the return air hole plate cylinder.

10. The working chemical oxygen respirator for enhancing oxygen production and heat dissipation according to claim 1, characterized in that, A radiator is arranged on the horizontally placed oxygen - generating tank. The radiator includes fins, the fins are fixed on a fixing plate, and a VC heat - spreader is arranged on the fins.

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