Fire-fighting respiratory protection system and rescue equipment applicable to fire scenes

Abstract

The present invention relates to the technical field of life-saving equipment, and in particular to a fire-fighting respiratory protection system and rescue equipment applicable to a fire scene. The fire-fighting respiratory protection system applicable to a fire scene includes an exhalation tube, an inhalation tube, an absorption device, a breathing airbag, an oxygen generator, a cooling device, and a controller. The absorption device is communicated with the exhalation tube, and the absorption device is adapted to absorb carbon dioxide, and the breathing airbag is communicated with the absorption device. The oxygen generator is a chemical oxygen generator. The inlet of the cooling device is communicated with the breathing airbag, and the outlet of the cooling device is communicated with the inhalation tube. By recycling nitrogen and part of oxygen in the exhaled gas and supplying them to the user, a system isolated from the outside world is formed, and the risks of high-pressure physical explosion and chemical explosion in a high-temperature environment existing in the existing equipment are reduced. On the other hand, by supplying oxygen through a chemical oxygen generator, oxygen exists in a solid form, and more oxygen-producing agents can be loaded, greatly extending the reliable working time of fire-fighting and rescue personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of life-saving equipment, and in particular to a fire-fighting respiratory protection system and rescue equipment applicable to a fire scene. Background Art

[0002] Respirators are widely applicable to fields such as petroleum, chemical industry, metallurgy, coal, and mines, and are used for people to wear when carrying out emergency rescue, accident handling, rescue, or operations in toxic and harmful gas environments. Their advantage is that the protection time can reach 2 to 6 hours. If respirators are applied in the field of fire-fighting and rescue, replacing positive pressure air respirators with a breathing protection time of only dozens of minutes will help improve the rapid response and efficient disposal capabilities at the fire accident scene, and reduce casualties and property losses.

[0003] In related technologies, respirators usually use high-pressure oxygen cylinders as the oxygen source, which have potential risks of high-pressure physical explosion and high-temperature chemical explosion. Therefore, such respirators are generally not used in fire scenes. In addition, there are also respirators that use potassium superoxide to replace compressed oxygen cylinders as the oxygen source. The reaction process between potassium superoxide and water and carbon dioxide is uncontrollable and there is a flowing situation. During use, the oxygen concentration fluctuates greatly, and there may even be a problem of severe oxygen deficiency and high carbon dioxide concentration leading to asphyxiation. Moreover, since the reaction between potassium superoxide and water and carbon dioxide is an exothermic reaction, the inhalation temperature will be too high after long-term use, causing respiratory tract burns. The failure of potassium superoxide dust filtration leads to the inhalation of strong alkaline substances by the human body, which will also cause respiratory tract burns or even death of personnel, shortening the actual use duration of the respirator. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the related technologies. For this purpose, the present invention provides a fire-fighting respiratory protection system applicable to a fire scene, including:

[0005] An exhalation tube;

[0006] An inhalation tube;

[0007] An absorption device, the absorption device is communicated with the exhalation tube, the absorption device is adapted to absorb carbon dioxide, and the absorption device includes:

[0008] A housing, an installation cavity is provided in the housing, and an air inlet and an air outlet are provided on the housing;

[0009] A porous plate assembly, which is arranged in the installation cavity, and the porous plate assembly divides the installation cavity to form a buffer cavity and a reaction cavity that are spaced apart from each other;

[0010] A solid alkaline substance, the solid alkaline substance is arranged in the reaction cavity;

[0011] A breathing airbag, the breathing airbag is communicated with the absorption device;

[0012] An oxygen generator, the oxygen generator is communicated with the breathing airbag, and the oxygen generator is a chemical oxygen generator;

[0013] A cooling device, the inlet of the cooling device is communicated with the breathing airbag, the outlet of the cooling device is communicated with the air suction pipe, and the cooling device includes:

[0014] A box body, the box body forms a refrigeration space and a gas channel, a first end of the box body is provided with an air inlet communicated with the gas channel, a second end of the box body is provided with an air outlet communicated with the gas channel, and at least one blocking layer is provided on the peripheral wall of the box body;

[0015] A refrigerating member, the refrigerating member is arranged in the refrigeration space, and the refrigerating member is in contact with the peripheral wall of the gas channel for heat exchange;

[0016] A controller, the controller is communicatively connected with the breathing airbag, the oxygen generator and the cooling device.

[0017] For a fire-fighting breathing protection system applicable to a fire scene provided by the present invention, a first one-way valve is provided between the air exhalation pipe and the absorption device, and a drain pipe is provided between the first one-way valve and the absorption device.

[0018] For a fire-fighting breathing protection system applicable to a fire scene provided by the present invention, at least one gas sensor is arranged in the breathing airbag, and the gas sensor is communicatively connected with the controller;

[0019] And / or, at least one gas sensor is arranged in the absorption device, and the gas sensor is communicatively connected with the controller.

[0020] For a fire-fighting breathing protection system applicable to a fire scene provided by the present invention, at least one first temperature sensor is arranged in the cooling device, and the first temperature sensor is communicatively connected with the controller.

[0021] For a fire-fighting breathing protection system applicable to a fire scene provided by the present invention, an alarm is further arranged in the cooling device, the alarm is connected with the first temperature sensor, and when the detected temperature of the first temperature sensor is greater than or equal to the safety temperature, the alarm gives an alarm.

[0022] According to a fire-fighting respiratory protection system applicable to a fire scene provided by the present invention, a starter and a second temperature sensor are provided inside the oxygen generator, and both the starter and the second temperature sensor are communicatively connected to the controller, and the controller controls the starter to be turned on or off based on the detection value of the second temperature sensor.

[0023] According to a fire-fighting respiratory protection system applicable to a fire scene provided by the present invention, the porous plate assembly includes a first porous plate and a second porous plate, and a buffer cavity is formed at intervals between two adjacent porous plate assemblies, and a reaction cavity is formed at intervals between the first porous plate and the second porous plate assembly of the same group.

[0024] According to a fire-fighting respiratory protection system applicable to a fire scene provided by the present invention, the absorption device further includes a partition assembly, the partition assembly is disposed in the installation cavity, and the partition assembly extends along a first direction of the housing to divide the installation cavity into a plurality of sub-chambers;

[0025] The porous plate assembly extends along a second direction of the housing to divide the sub-chamber into the buffer cavity and the reaction cavity, and the buffer cavity and the reaction cavity are arranged at intervals to form a carbon dioxide reaction absorption path, the air inlet is communicated with the buffer cavity, and the air outlet is communicated with the reaction cavity.

[0026] According to a fire-fighting respiratory protection system applicable to a fire scene provided by the present invention, the cooling device further includes a refrigeration pipe, the box body forms a heat exchange cavity, the refrigeration pipe is disposed in the heat exchange cavity, the refrigeration pipe and the inner wall surface of the heat exchange cavity jointly define the refrigeration space, and the refrigeration pipe defines a gas passage.

[0027] According to a fire-fighting respiratory protection system applicable to a fire scene provided by the present invention, the blocking layer includes an anti-radiation layer, and the anti-radiation layer is provided on at least one of the inner wall surface and the outer wall surface of the box body;

[0028] And / or, the blocking layer includes a vacuum layer, the box body includes an inner box and an outer box, the inner box is disposed inside the outer box, and a vacuum layer is formed between the inner box and the outer box.

[0029] The present invention also provides a rescue device, including the fire-fighting respiratory protection system applicable to a fire scene as described above.

[0030] The fire-fighting respiratory protection system and rescue equipment applicable to the fire scene provided by the present invention filter the gas exhaled by the user through the exhalation tube and the absorption device, recover nitrogen and part of the oxygen in the exhaled gas and supply it to the user for breathing, forming a fire-fighting respiratory protection system applicable to the fire scene that is isolated from the outside world, and eliminating the high-pressure physical explosion risk and chemical explosion risk under high-temperature environment existing in the existing equipment. On the other hand, oxygen is supplied by a chemical oxygen generator. Oxygen exists in a solid form, occupies a small space, is light in weight, and can hold more oxygen-producing agents. Cooperating with the absorption device and the cooling device, etc., the reliable working time of fire-fighting and rescue personnel is greatly extended, and the rapid response and efficient disposal capabilities at the fire accident scene are improved.

[0031] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of the fire-fighting respiratory protection system applicable to the fire scene provided by the present invention.

[0034] Figure 2 It is one of the perspective views of the absorption device provided by the present invention.

[0035] Figure 3 It is one of the internal structural schematic diagrams of the absorption device provided by the present invention.

[0036] Figure 4 It is the second perspective view of the absorption device provided by the present invention.

[0037] Figure 5 It is a sectional view of the absorption device provided by the present invention.

[0038] Figure 6 It is the third perspective view of the absorption device provided by the present invention.

[0039] Figure 7 It is the second internal structural schematic diagram of the absorption device provided by the present invention.

[0040] Figure 8 It is the fourth perspective view of the absorption device provided by the present invention.

[0041] Figure 9It is the third schematic diagram of the internal structure of the absorption device provided by the present invention.

[0042] Figure 10 It is the fifth three-dimensional view of the absorption device provided by the present invention.

[0043] Figure 11 It is the fourth schematic diagram of the internal structure of the absorption device provided by the present invention.

[0044] Figure 12 It is the fifth schematic diagram of the internal structure of the absorption device provided by the present invention.

[0045] Figure 13 It is the first schematic diagram of the structure of the cooling device provided by the present invention.

[0046] Figure 14 It is the second schematic diagram of the structure of the cooling device provided by the present invention.

[0047] Figure 15 It is the third schematic diagram of the structure of the cooling device provided by the present invention.

[0048] Figure 16 It is the fourth schematic diagram of the structure of the cooling device provided by the present invention.

[0049] Figure 17 It is the fifth schematic diagram of the structure of the cooling device provided by the present invention.

[0050] Reference numerals:

[0051] 100, exhalation tube; 101, first one-way valve; 102, drain pipe; 103, inhalation tube; 104, breathing bag; 105, oxygen generator; 106, first aid component; 107, controller; 108, second one-way valve; 109, third one-way valve; 110, gas sensor; 111, first temperature sensor; 112, second temperature sensor; 113, display; 114, indicator light; 115, pressure relief valve.

[0052] 200, cooling device; 201, alarm; 210, box body; 211, cover body; 212, main body; 213, outer box; 214, inner box; 215, heat exchange chamber; 220, input port; 221, output port; 222, first air inlet hole; 223, second air inlet hole; 224, first air outlet hole; 225, second air outlet hole; 226, air inlet chamber; 227, air outlet chamber; 230, vacuum layer; 231, heat preservation member; 232, anti-radiation layer; 233, heat insulation layer; 234, heat insulation member; 241, refrigeration member; 242, gas passage; 243, support assembly; 244, support block; 245, support plate.

[0053] 300. Absorption device; 310. Housing; 311. Installation cavity; 312. Air inlet; 313. Air outlet; 314. Buffer cavity; 320. First sub-chamber; 321. Second sub-chamber; 322. First cavity; 323. Second cavity; 324. Third cavity; 330. Reaction chamber; 331. First reaction chamber; 332. Second reaction chamber; 333. Third reaction chamber; 340. Separation component; 341. First separation plate; 342. Second separation plate; 350. Porous plate component; 351. First porous plate; 352. Second porous plate; 353. Third porous plate; 360. First connecting pipe; 361. Second connecting pipe. Detailed implementation manners

[0054] The following further describes in detail the implementation manners of the present application in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0055] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the component or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0057] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0058] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0059] Next, in combination with Figures 1 - 17 Describe the fire-fighting respiratory protection system applicable to the fire scene of the present invention.

[0060] See Figure 1 As shown, the fire-fighting respiratory protection system applicable to the fire scene according to the embodiment of the present invention includes an exhalation tube 100, an inhalation tube 103, an absorption device 300, a breathing airbag 104, an oxygen generator 105, a cooling device 200, and a controller 107.

[0061] Specifically, the exhalation tube 100 is used to convey the gas exhaled by the user, and the inhalation tube 103 is used to convey the breathable gas to the user. The absorption device 300 is connected to the exhalation tube 100, and the absorption device 300 is adapted to absorb carbon dioxide. The breathing airbag 104 is connected to the absorption device 300. After the exhaled gas passes through the absorption device 300 to absorb and remove carbon dioxide, the remaining gas containing nitrogen and a small amount of oxygen flows to the breathing airbag 104.

[0062] The absorption device 300 includes a housing 310, a solid alkaline substance, and a porous plate assembly 350. An installation cavity 311 is provided in the housing 310, and an air inlet 312 and an air outlet 313 are provided on the housing 310. The housing 310 serves as the basic structure of the entire device and has an installation cavity 311 for accommodating other components and ensuring its structural integrity. The porous plate assembly 350 is provided in the installation cavity 311, and the porous plate assembly 350 divides the installation cavity 311 to form a buffer cavity 314 and a reaction cavity 330 that are spaced apart from each other. The solid alkaline substance is provided in the reaction cavity 330. During the flow of the exhaled gas in the absorption device 300, the exhaled gas contacts the solid alkaline substance, and the solid alkaline substance is used to absorb carbon dioxide in the exhaled gas. The buffer cavity 314 can provide a space for gas buffering to enable the gas to flow smoothly in the absorption device 300.

[0063] The oxygen generator 105 can release oxygen for oxygen supply. The oxygen generator 105 is connected to the breathing bag 104. The oxygen released by the oxygen generator 105 flows to the breathing bag 104 and mixes with the remaining gas to form a mixed gas with an oxygen content of about 21% for the user to breathe. In some embodiments, a third one-way valve is provided between the oxygen generator 105 and the breathing bag 104 to allow unidirectional conduction from the oxygen generator 105 to the breathing bag 104 and prevent gas from flowing back into the oxygen generator 105. A pressure relief valve 115 may be provided on the breathing bag 104 to relieve pressure when the internal pressure of the breathing bag 104 exceeds the threshold value, ensuring the pressure stability of the breathing bag 104 for stable gas supply.

[0064] The oxygen generator 105 is a chemical oxygen generator, and the chemical oxygen generator releases oxygen through a chemical reaction of an oxygen generation agent. For example, the oxygen generator 105 can release oxygen through the thermal decomposition reaction of sodium chlorate under catalytic action: NaClO3 → NaCl + O2 + ΔHr. The oxygen release rate during the reaction process of sodium chlorate is stable and gentle, without high-pressure conditions. During continuous oxygen supply, except for a small part of the oxygen that has been released, most of the oxygen exists in the form of solid sodium chlorate, and it will not explode under strong external impact, with high stability and safety. In addition, sodium chlorate is a substance with relatively mild acidity, alkalinity, oxidation-reduction properties. The by-product of the reaction is NaCl, the main component of table salt, and no incidental chemical damage will be caused. In this way, the oxygen generator 105 has lower requirements for stable pressure and dust isolation, does not require a dedicated structure for protection, simplifies the structure of the oxygen generator 105, reduces weight, and is thus convenient to carry.

[0065] In a chemical oxygen generator, most of the oxygen exists in a solid form, occupying a relatively small space. The oxygen generator 105 can load more oxygen generation agent, thereby providing more oxygen and extending the usage duration. And compared with an oxygen cylinder, the chemical oxygen generator has higher safety. In some embodiments, the fire-fighting respiratory protection system applicable to the fire scene further includes a first aid component 106, and the first aid component 106 is connected and communicated with the oxygen generator 105 to provide oxygen for the wounded when encountering them.

[0066] It can be understood that a large amount of heat is generated during the chemical reaction of the oxygen generation agent, making the temperature of the released oxygen relatively high. If the high-temperature oxygen is directly supplied to the user, it will cause burns to the user's respiratory tract and even lead to the death of the user. The cooling device 200 is used to cool the mixed gas to avoid burns to the user's respiratory tract. The inlet of the cooling device 200 is connected to the breathing bag, and the outlet of the cooling device 200 is connected to the inhalation tube 103 to deliver the mixed gas available for breathing to the user through the inhalation tube 103. As Figure 1In some embodiments, a second one-way valve 108 is provided between the cooling device 200 and the intake pipe 103 to allow unidirectional conduction from the cooling device 200 to the intake pipe 103 and prevent gas backflow.

[0067] The cooling device 200 includes a box body 210 and a refrigerating member 241. The box body 210 forms a refrigerating space and a gas passage 242. The mixed gas is transported from the breathing bag 104 to the intake pipe 103 through the gas passage 242. An air inlet communicating with the gas passage 242 is provided at the first end of the box body 210, and the air inlet communicates with the breathing bag 104; an air outlet communicating with the gas passage 242 is provided at the second end of the box body 210, and the air outlet communicates with the intake pipe 103. The refrigerating member 241 is disposed in the refrigerating space, and the refrigerating member 241 contacts the peripheral wall of the gas passage 242 for heat exchange. At least one layer of blocking layer is provided on the peripheral wall of the box body 210, and the blocking layer is used to block or weaken the heat transfer between the external environment and the refrigerating member 241 to improve the heat exchange effect of the cooling device 200.

[0068] In addition, the exhaled gas of the user is filtered through the exhalation pipe 100 and the absorption device 300, and the nitrogen and part of the oxygen in the exhaled gas are recovered and supplied to the user for breathing, forming a fire scene applicable fire fighting respiratory protection system isolated from the external environment, which simplifies the structure. In a dangerous environment, such as when toxic gas leaks or at a fire scene, the filtration pressure of the fire scene applicable fire fighting respiratory protection system can be reduced and its structure can be simplified, so that more oxygen can be carried. The amount of oxygen provided is greatly increased compared with the related technology, and the working time is extended.

[0069] The controller 107 is communicatively connected to the breathing bag 104, the oxygen generator 105 and the cooling device 200. The controller 107 is used to monitor and control the breathing bag 104, the oxygen generator 105 and the cooling device 200 of the fire scene applicable fire fighting respiratory protection system. For example, the controller 107 can monitor the oxygen content of the mixed gas in the breathing bag 104 to control the chemical reaction process of the oxygen generator 105 and adjust the oxygen release amount, so as to adjust the oxygen content in the mixed gas.

[0070] For the fire scene applicable fire fighting respiratory protection system according to the embodiments of the present invention, the exhaled gas of the user is filtered through the exhalation pipe 100 and the absorption device 300, and the nitrogen and part of the oxygen in the exhaled gas are recovered and supplied to the user for breathing, forming a fire scene applicable fire fighting respiratory protection system isolated from the external environment, which simplifies the structure, significantly increases the available oxygen amount, and thus greatly extends the working time. Oxygen is supplied by a chemical oxygen generator, and oxygen exists in a solid form, occupying a smaller space. The oxygen generator 105 can load more oxygen generating agents, so that more oxygen can be provided and the usage duration can be extended.

[0071] According to some embodiments of the present invention, a first one-way valve 101 is provided between the exhalation tube 100 and the absorption device 300 to make the exhalation tube 100 conduct unidirectionally to the absorption device 300, avoiding the backflow of exhaled gas. In some embodiments, a drain pipe 102 is provided between the first one-way valve 101 and the absorption device 300. The water vapor in the exhaled gas condenses in the exhalation tube 100, and the condensed water is discharged through the drain pipe 102 to reduce the absorption pressure of the absorption device 300 and extend the service life of the absorption device 300.

[0072] According to some embodiments of the present invention, at least one gas sensor 110 is provided in the breathing airbag 104. The gas sensor 110 is communicatively connected to the controller 107. The gas sensor 110 is used to detect the oxygen content of the mixed gas in the breathing airbag 104, so as to control the oxygen generator 105 based on the oxygen content detected by the gas sensor 110, increase or decrease the oxygen release speed, and keep the oxygen content of the mixed gas stable. The gas sensor 110 in the breathing airbag 104 can also detect the carbon dioxide content in the breathing airbag 104 to take corresponding measures to avoid danger when the carbon dioxide content in the mixed gas is too high.

[0073] In some embodiments, at least one gas sensor 110 is provided in the absorption device 300. The gas sensor 110 is communicatively connected to the controller 107 to detect the carbon dioxide content of the gas in the absorption device 300 to monitor the state of the absorption device 300. For example, there may be at least two gas sensors 110 in the absorption device 300, one is provided at the inlet of the absorption device 300, and one is provided at the outlet of the absorption device 300. The state of the absorption device 300 is judged by the difference in the carbon dioxide content detected by the two gas sensors 110, so as to detect the failure of the absorption device 300 in time and avoid danger. As Figure 1 shown, the fire-fighting respiratory protection system applicable to the fire scene may further include a display 113. The display 113 is communicatively connected to the gas sensor 110, and the detection value of the gas sensor 110 is visually reflected through the display 113, so that the user can obtain the gas content at the corresponding position in real time to make a judgment and take corresponding measures.

[0074] According to some embodiments of the present invention, at least one first temperature sensor 111 is provided inside the cooling device 200. The first temperature sensor 111 is communicatively connected to the controller 107. The controller 107 controls the heat exchange speed of the cooling device 200 based on the detection value of the first temperature sensor 111, and adjusts the oxygen release speed of the oxygen generator 105. There may be multiple first temperature sensors 111, and at least one of the first temperature sensors 111 is provided at the outlet of the cooling device 200. In some embodiments, an alarm 201 is further provided inside the cooling device 200. The alarm 201 is connected to the first temperature sensor 111. When the detected temperature of the first temperature sensor 111 is greater than or equal to the safe temperature, the alarm 201 emits an alarm. The alarm 201 may be a buzzer or an alarm light.

[0075] According to some embodiments of the present invention, a starter and a second temperature sensor 112 are provided inside the oxygen generator 105. Both the starter and the second temperature sensor 112 are communicatively connected to the controller 107. The starter is used to control the chemical reaction of the oxygen-producing agent to occur or stop occurring. The detection value of the second temperature sensor 112 can reflect the oxygen release speed. When the oxygen release speed is high, the temperature detected by the second temperature sensor 112 is high, and vice versa. The controller 107 controls the starter to turn on or off based on the detection value of the second temperature sensor 112 to control the oxygen release speed. In some embodiments, the oxygen generator 105 is provided with an indicator light 114. The indicator light 114 is communicatively connected to the second temperature sensor 112. The indicator light 114 can adjust the brightness or color based on the detection value of the second temperature sensor 112. For example, when the temperature detected by the second temperature sensor 112 is high, the indicator light 114 shows red, and when the temperature detected by the second temperature sensor 112 is low, the indicator light 114 shows green, so that the user can obtain the oxygen release speed through the indicator light 114.

[0076] Specifically, the porous plate assembly 350 includes a first porous plate 351 and a second porous plate 352. A buffer cavity 314 is formed by the interval between two adjacent porous plate assemblies 350. A reaction cavity 330 is formed by the interval between the first porous plate 351 and the second porous plate 352 of the same group of porous plate assemblies 350. The buffer cavity 314 formed by the first porous plate 351 and the second porous plate 352 separates two adjacent reaction cavities 330, so that there is a gap between the solid alkaline substances, reducing the resistance of the gas flowing in the absorption device 300 and improving the absorption efficiency of the absorption device 300.

[0077] In the embodiments of the present invention, as Figures 2 to 5As shown, the absorption device 300 includes a housing 310, a partition assembly 340, a perforated plate assembly 350, and a solid alkaline substance. The housing 310 has an installation cavity 311, and an air inlet 312 and an air outlet 313 are formed on the peripheral side of the housing 310. The partition assembly 340 is disposed in the installation cavity 311 and extends along a first direction of the housing 310 to divide the installation cavity 311 into multiple sub-chambers. The perforated plate assembly 350 is disposed in the installation cavity 311 and extends along a second direction of the housing 310. The perforated plate assembly 350 divides the sub-chambers into a buffer chamber 314 and a reaction chamber 330. The buffer chamber 314 and the reaction chamber 330 are arranged at intervals to form a carbon dioxide reaction absorption path. The air inlet 312 is communicated with the buffer chamber 314, and the air outlet 313 is communicated with the reaction chamber 330. The first direction and the second direction may be perpendicular to each other. In Figure 5 the example, the first direction is the up-down direction, and the second direction is the left-right direction.

[0078] The housing 310 not only provides protection for the entire device to ensure the safe and stable operation of the internal components, but also defines the boundary of gas flow. As the basic structure of the entire device, the housing 310 has an installation cavity 311 for accommodating other components and ensuring its structural integrity. The air inlet 312 and the air outlet 313 formed on the peripheral side of the housing 310 enable carbon dioxide gas to smoothly enter the device and be discharged after reacting with the absorbent. The material and structural design of the housing 310 should consider durability, sealing performance, and portability to meet the requirements of different usage scenarios.

[0079] Optionally, advanced materials and manufacturing processes can be used to optimize the performance of the housing 310. For example, using lightweight and high-strength composite materials to reduce the overall weight of the device; at the same time, by optimizing the sealing design of the housing 310, such as using more efficient sealing materials and structures, to ensure that the device can still maintain good sealing performance in extreme environments.

[0080] The partition assembly 340 subdivides the installation cavity 311 into multiple sub-chambers, which helps to control the gas flow path and ensure sufficient contact between the gas and the solid alkaline substance. By adjusting the size and shape of the sub-chambers, the reaction conditions can be optimized to further adjust and improve the carbon dioxide absorption effect.

[0081] The porous plate assembly 350 further divides the sub-chamber into a buffer chamber 314 and a reaction chamber 330, forming a carbon dioxide reaction absorption path. The design of the porous plate should ensure that the gas can be evenly distributed and smoothly enter the reaction chamber 330, while preventing the absorbent from falling into the buffer chamber 314. By adjusting the pore size, pore spacing, and material of the porous plate, the gas flow and absorption effect can be further optimized. The porous plate assembly 350 not only serves to separate the buffer chamber 314 and the reaction chamber 330, but also promotes the uniform distribution of the gas through its porous structure. This helps to ensure the uniform flow of the gas within the reaction chamber 330, thereby improving the absorption efficiency.

[0082] The solid alkaline substance serves as an absorbent, and the solid alkaline substance undergoes a chemical reaction with carbon dioxide, thereby achieving the purpose of purification and absorption. Selecting a suitable solid alkaline substance (such as calcium lime or sodium lime) and an appropriate filling amount is crucial for ensuring the absorption efficiency and operation stability of the device.

[0083] Optionally, the absorption capacity can be improved by changing the chemical composition, particle size distribution, or surface properties of the absorbent. At the same time, the regeneration and recycling technologies of the absorbent can also be studied to reduce costs and environmental impacts.

[0084] The absorption device 300 provided by the present invention forms a plurality of sub-chambers by arranging a partition assembly 340 within the installation cavity 311 of the housing 310. Then, a porous plate assembly 350 is provided to divide the plurality of sub-chambers into a buffer chamber 314 and a reaction chamber 330. The buffer chamber 314 and the reaction chamber 330 are arranged at intervals to form a carbon dioxide reaction absorption path, thereby extending the chemical reaction path of carbon dioxide within the absorption device 300. In this way, through the interval between the buffer chamber 314 and the reaction chamber 330, carbon dioxide can be repeatedly absorbed by the solid alkaline substance multiple times. At the same time, the arrangement of the buffer chamber 314 and the porous plate assembly 350 enables carbon dioxide to be evenly sieved and distributed multiple times through the porous plate assembly 350, effectively preventing carbon dioxide in the mixed gas from flowing out through the gaps with smaller steric hindrance to form a fixed channel, greatly improving the absorption efficiency, and reducing the filling amount of the solid alkaline substance while maintaining high-efficiency absorption, thereby reducing the overall volume and weight of the absorption device 300.

[0085] Refer to Figures 2 to 5 , according to an absorption device 300 provided by the present invention, the plurality of sub-chambers include a first sub-chamber 320 and a second sub-chamber 321. The absorption device 300 includes a first connecting pipe 360, and the first connecting pipe 360 connects the reaction chamber 330 corresponding to the first sub-chamber 320 and the buffer chamber 314 corresponding to the second sub-chamber 321.

[0086] It can be understood that the installation cavity 311 in the absorption device 300 is separated into multiple sub-chambers by the separation component 340. The sub-chambers may include a first sub-chamber 320, a second sub-chamber 321, etc. Each sub-chamber has a similar structure. This multi-sub-chamber design increases the flow path of the gas in the solid alkaline substance, thereby increasing the contact area between the gas and the alkaline substance of the hoop body, and thus improving the absorption efficiency of carbon dioxide. The first connecting pipe 360 connects the reaction chamber 330 corresponding to the first sub-chamber 320 and the buffer chamber 314 corresponding to the second sub-chamber 321. It allows the gas (at this time, the carbon dioxide concentration is relatively low) after the reaction is completed in the reaction chamber 330 in the first sub-chamber 320 to enter the buffer chamber 314 of the next sub-chamber through the first connecting pipe 360, thereby realizing the continuous flow and efficient absorption of the gas.

[0087] In this way, through the design of multiple sub-chambers, the carbon dioxide gas undergoes multiple absorption reactions in the device, thereby improving the overall absorption efficiency. At the same time, the presence of the first connecting pipe 360 ensures that the gas can flow smoothly from one sub-chamber to another, further improving the absorption effect. The first connecting pipe 360 connects the reaction chamber 330 and the buffer chamber 314, ensuring that the flow path of the gas in the device is more reasonable and efficient. This design avoids dead corners and accumulation of gas in the device, and improves the gas flow efficiency. The multiple sub-chambers are compactly arranged in the installation cavity 311 through the separation component 340 and the connecting pipes, making the structure of the entire device more compact and the volume smaller. This is beneficial to reducing the manufacturing cost and transportation cost of the device, and at the same time is convenient for the user to use and carry.

[0088] Optionally, according to actual needs, the number of sub-chambers can be further increased to improve the absorption capacity and efficiency of the device. At the same time, by optimizing the arrangement and size ratio of the sub-chambers, a more uniform and efficient absorption effect can be achieved.

[0089] Referring to Figures 2 to 5 , according to an absorption device 300 provided by the present invention, the air inlet 312 and the air outlet 313 are provided on the same side of the housing 310. The porous plate assembly 350 is symmetrically arranged along the first direction of the housing 310 at one end of the installation cavity 311 away from the air inlet 312 and the air outlet 313. The absorption device 300 further includes a second connecting pipe 361, and the second connecting pipe 361 communicates the buffer chamber 314 corresponding to the first sub-chamber 320 and the air inlet 312.

[0090] It can be understood that in this embodiment, both the air inlet 312 and the air outlet 313 are provided on the same side of the housing 310, which simplifies the structure of the device and is also convenient for the user to use and operate.

[0091] The porous plate assembly 350 is symmetrically arranged along the first direction of the housing 310 at one end of the installation cavity 311 away from the gas inlet 312 and the gas outlet 313. The symmetrical design not only makes the structure of the device more balanced and stable, but also ensures that the gas can be evenly distributed when passing through the porous plate assembly 350, avoiding the problem of gas deviation and dead corner in the device. By optimizing the layout and structure of the porous plate assembly 350, the contact area and reaction efficiency between the gas and the solid alkaline substance can be further improved.

[0092] The second connecting pipe 361 connects the buffer chamber 314 corresponding to the first sub-chamber 320 with the air inlet 312 , so that the air inlet 312 and the air outlet 313 are both arranged on the same side.

[0093] This embodiment achieves a more efficient gas flow and reaction process by optimizing the layout of the air inlet 312 and the air outlet 313, the symmetrical arrangement of the porous plate assembly 350, and the introduction of the second connecting pipe 361, thereby improving the absorption efficiency. The design of the second connecting pipe 361 makes the structure of the device compact and stable, and the symmetrical arrangement of the porous plate assembly 350 makes the device evenly stressed, thereby improving the overall stability and durability. The air inlet 312 and the air outlet 313 are arranged on the same side, which is convenient for users to use and operate and reduces the difficulty of use.

[0094] In one embodiment, the bottom of one end of the first connecting tube 360 ​​and the second connecting tube 361 located in the buffer chamber 314 is configured to be sawtooth-shaped or porous, so as to facilitate the entry and dispersion of gas.

[0095] In one embodiment, the absorption device 300 further includes a diaphragm member, which is embedded in an inner opening of one end of the first connecting pipe 360 ​​close to the first sub-chamber 320 .

[0096] When in use, the exhaled gas of the human body enters the buffer chamber 314 at the bottom of the first sub-chamber 320 through the air inlet 312 and the second connecting pipe 361. After the gas is fully dispersed in the bottom buffer chamber 314, it enters the reaction chamber containing the solid alkaline substance uniformly from bottom to top through the porous plate assembly 350. The absorbed gas enters the bottom buffer chamber 314 of the second sub-chamber 321 from the first connecting pipe 360 ​​located at the upper part of the chamber. The buffer chamber 314 can disperse the gas again and collect the moisture generated by the reaction of the reaction chamber 330 in the first sub-chamber 320. The gas enters the reaction chamber 330 of the second sub-chamber 321 containing the solid alkaline substance uniformly from bottom to top through the bottom porous plate assembly 350 again, thereby ensuring that the carbon dioxide in the mixed gas is fully absorbed. The absorbed gas enters the breathing airbag from the air outlet 313 located at the upper part of the second sub-chamber 321, and mixes with the oxygen released from the oxygen tank later to form a mixed gas suitable for human breathing.

[0097] It can be understood that the diaphragm member is embedded in the inner opening of one end of the first communication pipe 360 close to the first sub-chamber 320. Its main function is to serve as a separation barrier that allows gas to pass through but prevents solid alkaline substances from entering the communication pipe. This ensures that the solid alkaline substances mainly remain in the reaction chamber 330 to fully react with the carbon dioxide gas, without causing blockage inside the device or affecting the smooth flow of the air current.

[0098] Referring to Figure 6 and Figure 7 , according to an absorption device 300 provided by the present invention, the separation component 340 includes a first separation plate 341, and the porous plate component 350 includes a first porous plate 351 of the porous plate component 350 and a second porous plate 352 of the porous plate component 350 which are arranged at intervals. The first porous plate 351 is connected to one side of the first separation plate 341 close to the end of the air inlet 312. One end of the first separation plate 341 away from the air inlet 312 abuts against the second porous plate 352, so as to divide and form a first cavity 322, a first reaction chamber 331, a second cavity 323 and a second reaction chamber 332 in the installation cavity 311. The first cavity 322 communicates with the air inlet 312, the second cavity 323 communicates with the first reaction chamber 331 and the second reaction chamber 332, and the second reaction chamber 332 communicates with the air outlet 313.

[0099] It can be understood that the separation component 340 includes a first separation plate 341. The main function of this separation plate is to subdivide the installation cavity 311 into multiple sub-chambers. Through the arrangement of the first separation plate 341, different spatial regions can be formed, enabling the gas to flow along a predetermined path when passing through the device and making full contact with the solid alkaline substances.

[0100] The porous plate component 350 is composed of a first porous plate 351 of the porous plate component 350 and a second porous plate 352 of the porous plate component 350 which are arranged at intervals. This increases the contact area between the gas and the porous plate, improving the uniformity of gas distribution. At the same time, the presence of the porous plate can also promote the mass transfer process between the gas and the solid alkaline substances, thereby improving the absorption efficiency.

[0101] The first porous plate 351 is connected to one side of the first separation plate 341 close to the end of the air inlet 312, enabling the gas to first contact the first porous plate 351 after entering the device to achieve preliminary gas distribution. One end of the first separation plate 341 away from the air inlet 312 abuts against the second porous plate 352, forming an interval layout of the first cavity 322, the first reaction chamber 331, the second cavity 323 and the second reaction chamber 332.

[0102] The first cavity 322 is connected to the air inlet 312 and is the initial space after the gas enters the device. The gas starts to contact the first porous plate 351 here and undergoes preliminary distribution. The first reaction chamber 331 is located behind the first cavity 322 and is the main area where the gas reacts with the solid alkaline substance. Due to the presence of the first porous plate 351, the gas can enter this chamber evenly, fully contact the solid alkaline substance, and absorb carbon dioxide. The second cavity 323 connects the first reaction chamber 331 and the second reaction chamber 332, acting as a bridge for gas flow. Through the further distribution function of the second porous plate 352, the gas can smoothly enter the second reaction chamber 332. The second reaction chamber 332 is connected to the air outlet 313 and is the outlet area after the gas completes secondary absorption. After being absorbed by the two reaction chambers 330, the carbon dioxide concentration in the gas is greatly reduced and finally discharged through the air outlet 313.

[0103] In this way, through the above structure, the space can be effectively divided, the air flow can be guided, and the contact area can be increased, thereby improving the carbon dioxide absorption efficiency and enabling the device to have better performance and effect in purifying and treating carbon dioxide.

[0104] Referring to Figure 8 and Figure 9 , according to an absorption device 300 provided by the present invention, the partition assembly 340 further includes a second partition plate 342. The first partition plate 341 is arranged at intervals from it. The porous plate assembly 350 further includes a third porous plate 353. The second partition plate 342 abuts between the inner wall of the housing 310 and the third porous plate 353. The third porous plate 353 and the first porous plate 351 are symmetrically arranged on both sides of the first partition plate 341. A third cavity 324 and a third reaction chamber 333 are formed between the first partition plate 341, the third porous plate 353 and the second partition plate 342. The third cavity 324 is connected to the second reaction chamber 332 and the third reaction chamber 333, and the air outlet 313 is connected to the third reaction chamber 333.

[0105] It can be understood that the second partition plate 342 is introduced as a part of the partition assembly 340. Its arrangement at intervals from the first partition plate 341 divides the chambers inside the device into multiple sub-chambers, providing more flow paths and reaction spaces for the gas.

[0106] The third porous plate 353, as a part of the porous plate assembly 350, is symmetrically arranged with the first porous plate 351 on both sides of the first partition plate 341, enabling the gas to be evenly distributed when passing through the device and fully contact the solid alkaline substance.

[0107] The second partition plate 342 abuts between the inner wall of the housing 310 and the third porous plate 353, forming a third cavity 324 and a third reaction chamber 333. This enables the gas to smoothly enter the third cavity 324 after passing through the second reaction chamber 332, and then enter the third reaction chamber 333 for secondary absorption. The flow path of the gas in the device is extended, increasing the contact time and reaction opportunities with the solid alkaline substance.

[0108] The gas outlet 313 is in communication with the third reaction chamber 333. Due to the absorption in multiple reaction chambers 330, the carbon dioxide concentration in the gas is significantly reduced, thus achieving an efficient purification and absorption effect.

[0109] By introducing the second partition plate 342 and the third porous plate 353, the structure of the device becomes more complex and refined, but this also brings higher absorption efficiency and better purification effect. The design of multiple reaction chambers 330 and the buffer chamber 314 enables the gas to fully flow in the device and contact with the solid alkaline substance, thereby achieving efficient carbon dioxide absorption. At the same time, the symmetric design and reasonable connection relationship ensure the uniformity and stability of gas flow, avoiding dead corners and uneven flow phenomena.

[0110] In summary, in this embodiment, by further optimizing the design of the partition component 340 and the porous plate component 350, the absorption device 300 is further optimized in terms of space division, gas flow control, and reaction efficiency, improving the performance and efficiency of carbon dioxide absorption and purification.

[0111] Refer to Figure 7 and Figure 9 According to an absorption device 300 provided by the present invention, the volume of the first reaction chamber 331 is larger than the volume of the second reaction chamber 332 or the volume of the third reaction chamber 333.

[0112] It can be understood that since the first reaction chamber 331 is the area where the gas first contacts the solid alkaline substance after entering the device, increasing its volume means that the gas has a longer residence time and a larger contact area in this area. This helps the carbon dioxide in the gas to fully react with the solid alkaline substance, thereby improving the absorption efficiency. In an environment with high-concentration carbon dioxide, more reaction space and time are required to ensure effective absorption. Increasing the volume of the first reaction chamber 331 can adapt to this environment and ensure that the device can still maintain high absorption performance under high-concentration carbon dioxide conditions.

[0113] In this way, by increasing the volume of the first reaction chamber 331, the absorption device 300 of this embodiment can more efficiently absorb carbon dioxide. By reasonably designing the volume ratio of each reaction chamber 330, the overall performance of the device is optimized and improved.

[0114] Refer to Figure 8 andFigure 9 , an absorption device 300 provided according to the present invention, the air outlet 313 and the air inlet 312 are arranged on opposite sides of the housing 310.

[0115] It can be understood that in the embodiment, the air inlet 312 is located at the upper part of the housing 310, and the air outlet 313 is located at the lower part of the housing 310. The air outlet 313 and the air inlet 312 are arranged on opposite sides of the housing 310, ensuring a clear and direct flow path of the gas in the device, and the relatively arranged air inlet 312 and air outlet 313 make the device more flexible and convenient to use.

[0116] During use, the mixed gas enters the first cavity 322 through the air inlet 312, is dispersed by the first porous plate 351, and then enters the first reaction main chamber from top to bottom to act on the solid alkaline substance, and then enters the bottom second cavity 323 through the second porous plate 352. After the gas is dispersed again, it enters the second reaction chamber 332 from bottom to top to act on the solid alkaline substance for the second time, and enters the third cavity 324 through the third porous plate 353. After the gas is dispersed again, it enters the third reaction chamber 333 from top to bottom to act on the solid alkaline substance for the third time, so as to ensure that the carbon dioxide in the mixed gas is fully absorbed. The absorbed gas is discharged from the air outlet 313 at the lower part of the third reaction chamber 333 and enters the breathing airbag.

[0117] In one embodiment, the absorption device 300 further includes quick-sealing joints, which are arranged at the air inlet 312 and the air outlet 313. The air inlet 312 is connected to the breathing mask through the quick-sealing joint, and the air outlet 313 is connected to the breathing airbag through the quick-sealing joint.

[0118] It can be understood that the quick-sealing joints are arranged at the air inlet 312 and the air outlet 313, enabling the device to quickly establish connections with external devices such as breathing masks and breathing airbags during use. This simplifies the operation process, reduces the leakage risk during connection, and improves the overall sealing performance.

[0119] The introduction of the quick-sealing joints also enhances the safety performance of the device. Since the joints have the function of quick disconnection, when emergency replacement or maintenance of the device is required, the user can quickly disconnect the connection to avoid possible dangers or inconveniences.

[0120] In one embodiment, the absorption device 300 further includes a filter element, which is arranged on the side of the porous plate assembly 350 facing the reaction chamber 330.

[0121] It can be understood that the filter element can be a water-absorbing sponge, non-woven fabric, etc. The filter element is arranged on the side of the porous plate assembly 350 facing the reaction chamber 330. Such a layout enables the gas to pass through the filter element first before entering the reaction chamber 330 through the porous plate assembly 350. The main function of the filter element is to remove particulate matter and impurities in the gas to prevent them from entering the reaction chamber 330 and affecting the absorption effect.

[0122] In the embodiment of the present invention, as Figures 10 to 12 shown, the absorption device 300 includes a housing 310, at least two porous plate assemblies 350, and a solid alkaline substance. The housing 310 has an installation cavity 311. The two ends of the housing 310 in the axial direction are respectively provided with an air inlet 312 and an air outlet 313. The porous plate assemblies 350 are arranged in the installation cavity 311. The porous plate assemblies 350 are arranged at intervals in the axial direction of the housing 310 between the air inlet 312 and the air outlet 313 to divide the installation cavity 311 into a plurality of mutually spaced buffer cavities 314 and a plurality of reaction chambers 330. The air inlet 312 and the air outlet 313 are respectively communicated with the buffer cavities 314 at the ends of the two ends of the housing 310 in the axial direction. The solid alkaline substance is arranged in the reaction chamber 330.

[0123] The housing 310 is the main body 212 part of the device, which is used to accommodate the porous plate assembly 350 and the solid alkaline substance. It realizes the guiding and distribution of gas flow through the installation cavity 311, the air inlet 312, and the air outlet 313, and at the same time divides a plurality of buffer cavities 314 and reaction chambers 330, providing a suitable space for carbon dioxide absorption. The air inlet 312 and the air outlet 313 are the channels for gas to enter and exit the housing 310, and their designs directly affect the gas flow rate and distribution.

[0124] The function of the porous plate assembly 350 is to divide the installation cavity 311 into a plurality of buffer cavities 314 and reaction chambers 330, so that the gas can be evenly distributed and fully contact with the solid alkaline substance when flowing therein, promoting the carbon dioxide absorption reaction.

[0125] The solid alkaline substance is arranged in the reaction chamber 330 and is used to absorb carbon dioxide. When contacting with carbon dioxide, the alkaline substance will undergo a chemical reaction to absorb carbon dioxide and convert it into a corresponding compound, achieving the effect of purifying the gas.

[0126] An absorption device 300 provided by the present invention divides the space inside the tank into multiple reaction chambers 330 by adding porous plate assemblies 350 at different heights in the installation cavity 311 of the housing 310. A buffer cavity 314 with a certain thickness is left between the reaction chambers 330 to achieve gas collection and re-entry of the absorbent. That is, the porous plate assembly 350 is used to separately pack the solid alkaline substance in multiple reaction chambers 330. A porous plate is provided at the end of the previous reaction chamber 330 where a fixed channel is about to be formed, so that the gas is re-collected in the buffer cavity 314, breaking the original gas flow path, and then starting a new round of gas re-entry, thereby avoiding the formation of a fixed channel, increasing the frequency of uniform distribution of the mixed gas, effectively reducing or avoiding the formation of fixed gas flow channels in the solid alkaline substance, improving the utilization rate of the solid alkaline substance, and at the same time improving the carbon dioxide absorption efficiency. Moreover, under the constraint of the same working duration, the dosage of the solid alkaline substance and the volume of the absorber can be correspondingly reduced.

[0127] Referring to Figure 11 , according to an absorption device 300 provided by the present invention, the porous plate assembly 350 includes a first porous plate 351 and a second porous plate 352. A buffer cavity 314 is formed at intervals between two adjacent porous plate assemblies 350, and a reaction chamber 330 is formed at intervals between the first porous plate 351 and the second porous plate 352 in the same group.

[0128] It can be understood that the first porous plate 351 and the second porous plate 352 are alternately arranged, jointly constituting an alternating structure of the reaction chamber 330 and the buffer cavity 314. When the gas passes through the porous plate assembly 350, it can be mixed and dispersed multiple times, increasing the contact opportunity with the solid alkaline substance, thereby improving the absorption efficiency. The distance between the first porous plate 351 and the second porous plate 352 can be adjusted as needed to form reaction chambers 330 of different sizes. The size of the reaction chamber 330 directly affects the filling amount of the solid alkaline substance and the contact area between the gas and the solid alkaline substance.

[0129] The buffer cavity 314 formed between two adjacent porous plate assemblies 350 provides space for gas dispersion and re-combination; while the reaction chamber 330 formed between the first porous plate 351 and the second porous plate 352 in the same group is the main place where the gas reacts with the solid alkaline substance. The design of the buffer cavity 314 needs to ensure that the gas can pass through smoothly while reducing the residence time of the gas in the buffer cavity 314 to avoid unnecessary energy loss. The reaction chamber 330 needs to have enough space to fill the solid alkaline substance and ensure that the gas can be evenly distributed in the reaction chamber 330.

[0130] Referring to Figure 11 and Figure 12, An absorption device 300 provided according to the present invention has a buffer cavity 314 formed at intervals between the inner walls at both axial ends of the porous plate assembly 350 and the housing 310.

[0131] It can be understood that the porous plate assembly 350 is arranged axially inside the housing 310, and there is a certain distance between its two ends and the inner wall of the housing 310, forming the buffer cavity 314. In this embodiment, buffer cavities 314 are provided at both the head and tail ends of the housing 310, so that the mixed gas can be buffered and multi-path selected in the buffer cavity 314 before entering the reaction cavity 330, preventing the gas from usually flowing through the particle gaps with smaller ventilation resistance preferentially. As the use time prolongs, multiple fixed air flow channels are formed. At the same time, a buffer cavity 314 is provided at the tail end to ensure the symmetry of the arrangement space inside the housing 310 and guarantee the stability of the gas flow path in the housing 310, so that the solid alkaline substance in the reaction cavity 330 can be in full contact with the gas. The contact opportunity with the solid alkaline substance is increased. The buffer cavity 314 provides a smooth flow channel for the gas, ensuring that the gas can pass through the porous plate assembly 350 evenly and stably. In addition, the buffer cavity 314 also helps to reduce the residence time of the gas in the housing 310 and improve the absorption efficiency.

[0132] In some embodiments, the diameter of the cross-section of the housing 310 is L, and the distance between the air inlet 312 and the air outlet 313 is H, where the ratio between H and L is greater than or equal to 1.5 and less than or equal to 3.

[0133] It can be understood that by controlling the ratio between H and L, the flow path and distribution of the gas in the housing 310 can be optimized. A higher aspect ratio is adopted to reduce the specific surface area of gas flow and avoid or reduce the adverse effects caused by fixed air flow channels. Appropriate ratio design helps to ensure that the gas can be in full contact with the solid alkaline substance when passing through the porous plate assembly 350, thereby improving the absorption efficiency. The selection of the ratio range aims to find a balance point that not only ensures the uniform distribution of the gas but also avoids excessive increase in flow resistance.

[0134] Optionally, the ratio between H and L can be 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9 or 3, etc., which can be set according to specific requirements and are not specifically limited here.

[0135] Furthermore, for an absorption device 300 provided according to the present invention, twice the value of the diameter L of the cross-section of the housing 310 is less than or equal to the distance H between the air inlet 312 and the air outlet 313.

[0136] It can be understood that the cross-sectional area of the housing 310 is relatively large, and the distance between the air inlet 312 and the air outlet 313 is relatively short, that is, the ratio between H and L is less than 1, which exacerbates the solidification of the air flow channel and causes the existence of an absorption "dead angle". When twice the value of the cross-sectional diameter L of the housing 310 is less than or equal to H, it can ensure that the gas has sufficient flow space in the housing 310, reduce the situation that the gas flow rate is too fast or too slow on the cross-section, and thus optimize the flow distribution of the gas in the housing 310.

[0137] Appropriate design of the ratio between H and L helps to ensure that when the gas passes through the porous plate assembly 350, it can fully contact the solid alkaline substance and extend the contact time. This helps to improve the absorption efficiency of carbon dioxide and reduce the unabsorbed part of the gas in the housing 310.

[0138] By optimizing the ratio between H and L, the flow resistance of the gas in the housing 310 can be reduced, and the energy consumption during the operation of the device can be lowered. In special cases, a structure form in which multiple housings 310 are connected in parallel can be adopted.

[0139] In one embodiment, the absorption device 300 further includes a filter element, and the filter element is arranged on the side of the first porous plate 351 or the second porous plate 352 facing the reaction chamber 330 of the porous plate assembly 350.

[0140] It can be understood that the filter element can be a water-absorbing sponge or non-woven fabric, etc., and the filter element is arranged on the side of the porous plate assembly 350 facing the reaction chamber 330. Such a layout enables the gas to first pass through the filtering action of the filter element before entering the reaction chamber 330 through the porous plate assembly 350. The main function of the filter element is to remove particulate matter and impurities in the gas to prevent them from entering the reaction chamber 330 and affecting the absorption effect.

[0141] Refer to Figure 11 and Figure 12 According to an absorption device 300 provided by the present invention, the volume of the buffer chamber 314 is smaller than the volume of the reaction chamber 330.

[0142] It can be understood that since the volume of the buffer chamber 314 is smaller than that of the reaction chamber 330, the gas will pass through the buffer chamber 314 before entering the reaction chamber 330. This helps to optimize the gas flow path in the device, ensure that the gas can enter the reaction chamber 330 evenly and stably, and fully contact the solid alkaline substance, thereby improving the absorption efficiency of carbon dioxide.

[0143] A smaller volume of the buffer chamber 314 means that the resistance of the gas passing through the buffer chamber 314 is relatively small, which helps to reduce the energy consumption during the operation of the device. In addition, since the residence time of the gas in the reaction chamber 330 is relatively long, the absorption efficiency can be further improved, and the emission of unabsorbed carbon dioxide caused by too high gas flow rate can be reduced.

[0144] By reducing the volume of the buffer chamber 314, the volume of the entire device can be reduced to a certain extent, and the compactness of the device can be improved.

[0145] In some embodiments, the volumes of the plurality of reaction chambers 330 are sequentially decreased in the direction from the air inlet 312 to the air outlet 313.

[0146] It can be understood that as the gas enters the absorption device 300 from the air inlet 312, its flow rate and concentration may change. By sequentially decreasing the volumes of the plurality of reaction chambers 330, the flow characteristics and absorption requirements of the gas at different stages can be better matched.

[0147] Since the volume of the reaction chamber 330 decreases, the concentration of the gas has been reduced to a certain extent when it passes through the subsequent reaction chamber 330. This helps the solid alkaline substance to more effectively absorb carbon dioxide at different concentrations in different reaction chambers 330, thereby improving the overall absorption efficiency.

[0148] By adjusting the volume sizes of different reaction chambers 330, different carbon dioxide treatment requirements can be flexibly adapted. For example, when treating high-concentration carbon dioxide gas, the number or volume of the reaction chambers 330 with larger volume can be increased to provide sufficient absorption area and time; while when treating low-concentration gas, the number or volume of the reaction chambers 330 with larger volume can be reduced to reduce energy consumption and cost.

[0149] The design with decreasing volume can make the structure of the device more compact and reduce the occupied space. At the same time, through reasonable structural design, it can ensure that the device has sufficient stability and reliability during operation, reducing the failure rate and maintenance cost.

[0150] In some embodiments, the absorption device 300 further includes quick-sealing joints, which are provided at the air inlet 312 and the air outlet 313. The air inlet 312 is connected to the breathing mask through the quick-sealing joint, and the air outlet 313 is connected to the breathing airbag through the quick-sealing joint.

[0151] It can be understood that the quick-sealing joints are provided at the air inlet 312 and the air outlet 313, enabling the device to quickly establish connections with external devices such as the breathing mask and the breathing airbag during use. This simplifies the operation process, reduces the leakage risk during connection, and improves the overall sealing performance.

[0152] The introduction of the quick-sealing joint also enhances the safety performance of the device. Since the joint has the function of quick disconnection, when emergency replacement or repair of the device is required, the user can quickly disconnect the connection to avoid possible dangers or inconveniences.

[0153] In one embodiment, the absorption device 300 further includes a filter filler disposed in a buffer chamber 314 communicating with the air inlet 312 and the air outlet 313.

[0154] It can be understood that by filling a filter filler that perfectly fits the size of the buffer chamber 314 in the buffer chamber 314 communicating with the air inlet 312 and the air outlet 313, dust dispersion is prevented, and the filter filler is respectively supported and fixed by the first porous plate 351 and the second porous plate 352.

[0155] Optionally, the filter filler can be filter cotton or ceramic fiber, etc., and no special limitation is made here.

[0156] According to some embodiments of the present invention, the cooling device 200 further includes a refrigeration pipe. The box body 210 forms a heat exchange chamber 215. The refrigeration pipe is disposed in the heat exchange chamber 215. The refrigeration pipe and the inner wall surface of the heat exchange chamber 215 jointly define a refrigeration space. The refrigeration pipe defines a gas passage 242. The refrigeration member 241 is filled between the outer peripheral wall of the refrigeration pipe and the inner wall of the heat exchange chamber 215 and is in contact with the pipe wall of the refrigeration pipe for heat exchange.

[0157] In some embodiments, the blocking layer includes an anti-radiation layer 232. The inner wall surface of the box body 210 is provided with the anti-radiation layer 232, or the outer wall surface of the box body 210 is provided with the anti-radiation layer 232. Of course, the inner wall surface of the box body 210 and the outer wall surface of the box body 210 can also be both provided with the anti-radiation layer 232. The anti-radiation layer 232 can reflect the heat transferred to the cooling device 200 by the outside in a radiation form back to the external environment, effectively blocking the heat exchange between the inside of the cooling device 200 and the external environment and reducing the interference of the external environment on the cooling device 200. The blocking layer can also include a vacuum layer 230. The box body 210 includes an inner box 214 and an outer box 213. The inner box 214 is disposed in the outer box 213, and a vacuum layer 230 is formed between the inner box 214 and the outer box 213. The vacuum layer 230 separates the heat exchange chamber 215 from the external environment. The vacuum layer 230 can effectively block the heat exchange between the refrigeration member and the external environment and reduce the consumption of the refrigeration member.

[0158] According to the embodiments of the first aspect of the present application, as Figure 13 shown, the cooling device 200 includes:

[0159] A housing 210 is provided with a vacuum layer 230 inside. The housing 210 forms a heat exchange cavity 215. The vacuum layer 230 is arranged around the heat exchange cavity 215. An input port 220 communicating with the heat exchange cavity 215 is provided at a first end of the housing 210, and an output port 221 communicating with the heat exchange cavity 215 is provided at a second end of the housing 210.

[0160] A refrigerating member 241 is arranged inside the heat exchange cavity 215. A gas passage 242 is formed between the refrigerating member 241 and the inner wall surface of the heat exchange cavity 215. The gas passage 242 communicates the input port 220 and the output port 221. The refrigerating member 241 is adapted to cool the gas inside the gas passage 242.

[0161] For the cooling device 200 according to an embodiment of the present application, gas enters the heat exchange cavity 215 from the input port 220, and then flows along the gas passage 242 to the output port 221. When the gas flows through the gas passage 242, the refrigerating member 241 cools the gas inside the gas passage 242, so that the temperature of the gas flowing out from the output port 221 is lower than the temperature of the gas flowing into from the input port 220, thereby realizing the cooling of the gas. During the working and standby processes of the cooling device 200, the vacuum layer 230 separates the heat exchange cavity 215 from the external environment. The vacuum layer 230 can effectively block the heat exchange between the refrigerating member 241 and the external environment, reducing the consumption of the refrigerating member 241. That is, in the present application, by arranging the vacuum layer 230 around the heat exchange cavity 215, an effective isolation between the refrigerating member 241 and the external environment is realized, the heat exchange between the refrigerating member 241 and the external environment is reduced, and the influence of the external environment temperature on the cooling device 200 is reduced.

[0162] It can be understood that the two main ways of heat transfer are heat conduction and heat convection, and these two ways account for more than 85% of the heat transfer energy. By avoiding or reducing the heat conduction and heat convection between the external environment and the inside of the cooling device 200, the purpose of reducing the influence of the external environment can be achieved.

[0163] The essence of heat conduction and heat convection is the collision between gas molecules and the container wall and between gas molecules. By arranging the vacuum layer 230 inside the housing 210, since the number of gas molecules in the vacuum layer 230 decreases, the gas density decreases, and the mean free path of gas molecules increases, the collision frequency and intensity between gas molecules and between gas molecules and the container wall are relatively weakened, thereby avoiding or reducing the heat transfer between the external environment and the cold storage material inside the cooling device 200, prolonging the effective working time, and at the same time reducing the influence of the external environment fluctuation on the internal cooling process, realizing the stable operation of the cooling device 200.

[0164] It can be understood that the cooling device 200 in the related art is vulnerable to the influence of the external environmental temperature. When the external environmental temperature is relatively high, external heat is likely to transfer to the inside of the cooling device 200, resulting in a large loss of the cooling capacity of the cooling device 200. Furthermore, it is necessary to increase the cold storage material of the cooling device 200, leading to an excessive weight and volume of the cooling device 200. However, in this application, the heat exchange between the cooling device 200 and the external environment is reduced through the vacuum layer 230, the cold quantity consumption of the cooling device 200 is decreased, and the influence of the external environment on the cooling device 200 is reduced, effectively avoiding the excessive weight and volume of the cooling device 200.

[0165] It can be understood that a cold storage material is installed in the refrigerating member 241.

[0166] In an embodiment of the present application, a gas suction member is provided in the vacuum layer 230.

[0167] It can be understood that the gas suction member can absorb the gas in the vacuum layer 230, keeping the pressure in the vacuum layer 230 below 10-2 Pa, ensuring the separation effect of the vacuum layer 230, and effectively separating the heat exchange cavity 215 from the external environment.

[0168] In an embodiment of the present application, as Figure 13 shown, the box body 210 includes a cover body 211 and a main body 212. The cover body 211 is hermetically connected to the main body 212. The cover body 211 is formed with an output port 221, and the main body 212 is formed with an input port 220.

[0169] It can be understood that the hermetic connection between the cover body 211 and the main body 212 ensures that the gas can only flow along the direction of the input port 220, the gas passage 242, and the output port 221. Moreover, it can prevent the external environment from exchanging heat with the refrigerating member 241 through the connection between the cover body 211 and the main body 212, avoiding the influence of the external environment on the cooling device 200.

[0170] In an embodiment of the present application, the cover body 211 is detachably connected to the main body 212.

[0171] It can be understood that the detachable connection between the cover body 211 and the main body 212 enables the cover body 211 to be detached when the refrigerating member 241 fails or needs to be replaced, and then the refrigerating member 241 can be taken out for maintenance or replacement, which is convenient for operation.

[0172] It can be understood that the cover body 211 is detachably connected to the main body 212, for example, by means of screw connection, magnetic attraction, or any other suitable method.

[0173] In an embodiment of the present application, the cover body 211 is provided with a downward convex portion. When the cover body 211 is connected to the main body 212, the inner wall surface of the downward convex portion abuts against the outer wall surface of the main body 212, and a vacuum layer 230 is formed inside the downward convex portion.

[0174] It can be understood that the downward convex portion can separate the connection between the cover body 211 and the main body 212 from the external environment, that is, the vacuum layer 230 at the downward convex portion can separate the connection between the cover body 211 and the main body 212 from the external environment, further preventing the external environment from exchanging heat with the heat exchange cavity 215 and the refrigerating member 241 inside the heat exchange cavity 215 through the connection between the cover body 211 and the main body 212, and ensuring the separation effect.

[0175] In an embodiment of the present application, as Figure 13 shown, the cooling device 200 includes a support assembly 243. The support assembly 243 is disposed inside the heat exchange cavity 215, and the support assembly 243 is located between the refrigerating member 241 and the inner wall surface of the heat exchange cavity 215. The support assembly 243 is used to support the refrigerating member 241.

[0176] It can be understood that by supporting and fixing the refrigerating member 241 through the support assembly 243, the refrigerating member 241 can be stably installed inside the heat exchange cavity 215 of the box body 210, preventing the refrigerating member 241 from tilting during use.

[0177] It can be understood that the gas passage 242 is formed between the refrigerating member 241 and the inner wall surface of the heat exchange cavity 215. The stable installation of the refrigerating member 241 ensures the smoothness of the gas passage 242 and prevents the gas passage 242 from being blocked due to the tilt of the refrigerating member 241.

[0178] In an embodiment of the present application, as Figure 13 shown, the support assembly 243 includes a plurality of support blocks 244. One end of the support block 244 abuts against the refrigerating member 241, and the other end of the support block 244 abuts against the inner wall surface of the heat exchange cavity 215.

[0179] It can be understood that by abutting one ends of different support blocks 244 against different positions of the refrigerating member 241 respectively, simultaneous support for different positions of the refrigerating member 241 is achieved. And the support block 244 connects the refrigerating member 241 and the inner wall surface of the heat exchange cavity 215, preventing the refrigerating member 241 from tilting towards the inner wall surface of the heat exchange cavity 215 and ensuring the installation stability of the refrigerating member 241.

[0180] Exemplarily, support blocks 244 are provided between the side wall surface of the heat exchange cavity 215 and the refrigerating member 241, and between the bottom wall of the heat exchange cavity 215 and the refrigerating member 241.

[0181] In one embodiment of the present application, the shear strength of the box body 210 is 400 MPa - 850 MPa; and / or, the thermal conductivity of the box body 210 is 10.0 W / (m·K) - 25.0 W / (m·K); and / or, the density of the box body 210 is 4.0 g / cm 3 - 8.0 g / cm 3 . It can be understood that by designing the shear strength, thermal conductivity and density of the box body 210, the box body 210 can meet the usage requirements.

[0182] In one embodiment of the present application, the flexural strength of the box body 210 is 1200 MPa - 1500 MPa; and / or, the tensile strength of the box body 210 is 650 MPa - 1200 MPa; and / or, the compressive strength of the box body 210 is 700 MPa - 1500 MPa; and / or, the Brinell hardness of the box body 210 is 200 HB - 300 HB. It can be understood that by designing the tensile strength, compressive strength and Brinell hardness of the box body 210, the box body 210 can meet the usage requirements.

[0183] In one embodiment of the present application, the flexural strength of the box body 210 is 400 MPa - 600 MPa; and / or, the tensile strength of the box body 210 is 200 MPa - 1100 MPa; and / or, the compressive strength of the box body 210 is 500 MPa - 700 MPa; and / or, the Brinell hardness of the box body 210 is 180 HB - 220 HB. It can be understood that by designing the tensile strength, compressive strength and Brinell hardness of the box body 210, the box body 210 can meet the usage requirements.

[0184] According to an embodiment of the second aspect of the present application, the respirator includes the above-mentioned cooling device 200.

[0185] In the respirator according to an embodiment of the present application, gas enters the heat exchange chamber 215 from the input port 220, and then flows along the gas channel 242 to the output port 221. When the gas flows through the gas channel 242, the refrigerating member 241 cools the gas in the gas channel 242, so that the temperature of the gas flowing out from the output port 221 is lower than the temperature of the gas flowing in from the input port 220, thereby realizing the cooling of the gas. During the operation and standby of the cooling device 200, the vacuum layer 230 separates the heat exchange chamber 215 from the external environment. The vacuum layer 230 can effectively block the heat exchange between the refrigerating member 241 and the external environment, reducing the consumption of the refrigerating member 241. That is, in the present application, by arranging the vacuum layer 230 around the heat exchange chamber 215, an effective isolation between the refrigerating member 241 and the external environment is realized, the heat exchange between the refrigerating member 241 and the external environment is reduced, and the influence of the external environment temperature on the respirator is reduced.

[0186] According to an embodiment of the first aspect of the present application, as Figure 14 shown, the cooling device 200 includes:

[0187] A box body 210, a heat exchange cavity 215 is formed in the box body 210, an input port 220 communicating with the heat exchange cavity 215 is provided at the first end of the box body 210, an output port 221 communicating with the heat exchange cavity 215 is provided at the second end of the box body 210, and an anti-radiation layer 232 is provided on the inner wall surface and / or the outer wall surface of the box body 210;

[0188] A refrigerating member 241 is disposed in the heat exchange cavity 215. A gas passage 242 is formed between the refrigerating member 241 and the inner wall surface of the heat exchange cavity 215. The gas passage 242 communicates the input port 220 and the output port 221. The refrigerating member 241 is adapted to cool the gas in the gas passage 242.

[0189] For the cooling device 200 according to the embodiment of the present application, gas enters the heat exchange cavity 215 from the input port 220, and then flows along the gas passage 242 to the output port 221. When the gas flows through the gas passage 242, the refrigerating member 241 cools the gas in the gas passage 242, so that the temperature of the gas flowing out from the output port 221 is lower than the temperature of the gas flowing in from the input port 220, thereby realizing the cooling of the gas. During the working and standby processes of the cooling device 200, the anti-radiation layer 232 can reflect the heat transferred to the cooling device 200 in the form of radiation from the outside to the external environment, effectively blocking the heat exchange between the inside of the cooling device 200 and the external environment, and reducing the interference of the external environment on the cooling device 200. That is, in the present application, by providing the anti-radiation layer 232 at the box body 210, the heat radiation from the external environment is reflected, effectively preventing the heat of the external environment from entering the cooling device 200, and reducing the influence of the external environment temperature on the cooling device 200.

[0190] It can be understood that the basic ways of heat transfer include heat conduction, heat convection and heat radiation. The contribution of heat radiation to heat transfer is about 15%, which cannot be ignored. General heat radiation is mainly transmitted by visible light and infrared rays with longer wavelengths (0.4μm - 400μm). Since heat radiation can also be transmitted in a vacuum, in the present application, by coating the anti-radiation layer 232, the heat radiation in the visible light region and the near-infrared region is reflected to achieve the purpose of avoiding or reducing the heat of the external environment from entering the inside of the cooling device 200.

[0191] It can be understood that the cooling device 200 in the related art is vulnerable to the influence of the external environmental temperature. When the external environmental temperature is relatively high, external heat is likely to transfer to the inside of the cooling device 200, resulting in a large loss of the cooling capacity of the cooling device 200. As a result, it is necessary to increase the cold storage material of the cooling device 200, leading to an excessive weight and volume of the cooling device 200. However, in this application, the heat exchange between the cooling device 200 and the external environment is reduced through the anti-radiation layer 232, the cold consumption of the cooling device 200 is decreased, and the influence of the external environment on the cooling device 200 is reduced, effectively avoiding the excessive weight and volume of the cooling device 200.

[0192] Exemplarily, the anti-radiation layer 232 can be, for example, a metal anti-radiation layer 232 such as silver, gold, copper, chromium, etc. It can be understood that a cold storage material is installed in the refrigerating member 241.

[0193] In an embodiment of the present application, the anti-radiation layer 232 is disposed around the heat exchange cavity 215.

[0194] It can be understood that by disposing the anti-radiation layer 232 around the heat exchange cavity 215, the anti-radiation layer 232 can surround the heat exchange cavity 215, enabling the anti-radiation layer 232 to provide all-round protection for the heat exchange cavity 215, effectively preventing external heat radiation from entering the heat exchange cavity 215, and reducing the influence of the external environmental temperature on the cooling device 200.

[0195] In an embodiment of the present application, the thickness of the anti-radiation layer 232 at the inner wall surface of the box body 210 is different from the thickness of the anti-radiation layer 232 at the outer wall surface of the box body 210.

[0196] It can be understood that by providing anti-radiation layers 232 with different thicknesses on the inner wall surface and the outer wall surface of the box body 210, the combination of the anti-radiation layers 232 with different thicknesses can improve the heat radiation reflection ability of the cooling device 200. Furthermore, the heat transferred to the cooling device 200 in the form of radiation from the outside can be effectively reflected back to the external environment, which can extend the working duration and standby duration of the cooling device 200. It can be understood that through the combination of the anti-radiation layers 232 with different thicknesses, it is ensured that the light reflectivity of the cooling device 200 for light with a wavelength between 0.4 μm and 400 μm is not less than 85%.

[0197] In an embodiment of the present application, the material of the anti-radiation layer 232 on the inner wall surface of the box body 210 is different from the material of the anti-radiation layer 232 on the outer wall surface of the box body 210. It can be understood that by providing anti-radiation layers 232 with different materials on the inner wall surface and the outer wall surface of the box body 210, through the combination of anti-radiation layers 232 with different materials, the reflection ability of the cooling device 200 to thermal radiation can be improved, and the heat transferred to the cooling device 200 from the outside in the form of radiation can be effectively reflected back to the external environment, which can extend the working duration and standby duration of the cooling device 200.

[0198] In an embodiment of the present application, as Figure 14 shown, a heat insulation layer 233 is provided on the outer wall surface of the box body 210, and the heat insulation layer 233 is arranged around the box body 210. It can be understood that by coating the heat insulation layer 233 on the outer wall surface of the box body 210, the heat insulation layer 233 can further reduce the entry of external heat into the interior of the cooling device 200, and further reduce the influence of the external environmental temperature on the cooling device 200.

[0199] In an embodiment of the present application, as Figure 14 shown, the anti-radiation layer 232 on the outer wall surface of the box body 210 is located between the heat insulation layer 233 and the outer wall surface of the box body 210. It can be understood that by coating the anti-radiation layer 232 on the outer wall surface of the box body 210 and then coating a heat insulation layer 233 on the anti-radiation layer 232, through the cooperation of the heat insulation layer 233 and the anti-radiation layer 232, the heat of the external environment can be effectively blocked outside the cooling device 200, reducing the influence of the external environment on the cooling device 200.

[0200] In an embodiment of the present application, the thickness of the anti-radiation layer 232 is 1 μm - 100 μm. It can be understood that setting the thickness of the anti-radiation layer 232 between 1 μm and 100 μm ensures the anti-radiation effect of the anti-radiation layer 232. Exemplarily, metal coatings such as gold, silver, copper, and chromium can be selected as the anti-radiation layer 232 on the outer wall surface of the box body 210. Exemplarily, the thickness of the anti-radiation layer 232 on the outer wall surface of the box body 210 does not exceed 50 μm.

[0201] In one embodiment of the present application, the thickness of the heat insulation layer 233 is 0.1 mm - 5.0 mm. It can be understood that setting the thickness of the heat insulation layer 233 to 0.1 mm - 5.0 mm ensures the heat insulation effect of the heat insulation layer 233. Exemplarily, the heat insulation layer 233 can be a polystyrene layer, an acrylic resin layer, an alkyd resin layer, a fluororesin layer, an epoxy resin layer, an epoxy ester layer, a nitrile rubber layer, a polyurethane layer, an acrylic alkyd resin layer, an organosilicon modified resin layer, an organosilicon modified alkyd resin layer, a polyethylene polypropylene resin layer, etc. In one embodiment of the present application, the thermal conductivity of the heat insulation layer 233 is 0.02 W / (m·K) - 0.30 W / (m·K). It can be understood that setting the thermal conductivity of the heat insulation layer 233 to 0.02 W / (m·K) - 0.30 W / (m·K) ensures the heat insulation effect of the heat insulation layer 233.

[0202] In one embodiment of the present application, as Figure 14 shown, the box body 210 includes a cover body 211 and a main body 212. The cover body 211 is hermetically connected to the main body 212. The cover body 211 is formed with an output port 221, and the main body 212 is formed with an input port 220. It can be understood that the hermetic connection between the cover body 211 and the main body 212 ensures that the gas can only flow along the direction of the input port 220, the gas passage 242, and the output port 221. And it can prevent the external environment from exchanging heat with the refrigerating member 241 through the connection between the cover body 211 and the main body 212, and avoid the cooling device 200 being affected by the external environment.

[0203] In an embodiment of the present application, the cover body 211 is detachably connected to the main body 212. It can be understood that the detachable connection between the cover body 211 and the main body 212 allows the cover body 211 to be detached when the refrigerating member 241 fails or needs to be replaced, and then the refrigerating member 241 can be taken out for maintenance or replacement, which is convenient for operation. It can be understood that the cover body 211 is detachably connected to the main body 212, for example, by screw connection, magnetic attraction, or any other suitable method.

[0204] In an embodiment of the present application, the cover body 211 is provided with a downward convex portion. When the cover body 211 is connected to the main body 212, the inner wall surface of the downward convex portion abuts against the outer wall surface of the main body 212, and a vacuum layer 230 is formed inside the downward convex portion. It can be understood that the downward convex portion can separate the connection between the cover body 211 and the main body 212 from the external environment, that is, the vacuum layer 230 at the downward convex portion can separate the connection between the cover body 211 and the main body 212 from the external environment, further preventing the external environment from exchanging heat with the heat exchange cavity 215 and the refrigerating member 241 in the heat exchange cavity 215 through the connection between the cover body 211 and the main body 212, and ensuring the separation effect.

[0205] In one embodiment of the present application, as Figure 14As shown, the cooling device 200 includes a support assembly 243. The support assembly 243 is disposed within the heat exchange chamber 215, between the refrigerating member 241 and the inner wall surface of the heat exchange chamber 215. The support assembly 243 is used to support the refrigerating member 241. It can be understood that by supporting and fixing the refrigerating member 241 through the support assembly 243, the refrigerating member 241 can be stably installed within the heat exchange chamber 215 of the cabinet 210, preventing the refrigerating member 241 from tilting during use.

[0206] It can be understood that the gas passage 242 is formed between the refrigerating member 241 and the inner wall surface of the heat exchange chamber 215. With the stable installation of the refrigerating member 241, the smoothness of the gas passage 242 is ensured, preventing the gas passage 242 from being blocked due to the tilt of the refrigerating member 241.

[0207] In an embodiment of the present application, as Figure 14 shown, the support assembly 243 includes a plurality of support blocks 244. One end of the support block 244 abuts against the refrigerating member 241, and the other end of the support block 244 abuts against the inner wall surface of the heat exchange chamber 215. It can be understood that by respectively abutting one ends of different support blocks 244 against different positions of the refrigerating member 241, simultaneous support of different positions of the refrigerating member 241 is achieved. And the support block 244 connects the refrigerating member 241 and the inner wall surface of the heat exchange chamber 215, preventing the refrigerating member 241 from tilting towards the inner wall surface of the heat exchange chamber 215 and ensuring the installation stability of the refrigerating member 241.

[0208] Exemplarily, support blocks 244 are provided both between the side wall surface of the heat exchange chamber 215 and the refrigerating member 241, and between the bottom wall of the heat exchange chamber 215 and the refrigerating member 241.

[0209] According to an embodiment of the second aspect of the present application, the breather includes the above-mentioned cooling device 200.

[0210] According to the respirator of the embodiment of the present application, gas enters the heat exchange chamber 215 from the input port 220, and then flows along the gas passage 242 to the output port 221. When the gas flows through the gas passage 242, the cooling element 241 cools the gas in the gas passage 242, so that the temperature of the gas flowing out of the output port 221 is lower than the temperature of the gas flowing into the input port 220, thereby realizing the cooling of the gas. During the operation and standby of the cooling device 200, the anti-radiation layer 232 can reflect the heat transferred to the cooling device 200 from the outside in the form of radiation back to the external environment, effectively blocking the heat exchange between the inside of the cooling device 200 and the external environment, and reducing the interference of the external environment on the cooling device 200. That is, the present application realizes the reflection of the thermal radiation of the external environment by providing the anti-radiation layer 232 at the box body 210, effectively avoiding the entry of the external environment heat into the cooling device 200 and reducing the influence of the external environment temperature on the cooling device 200.

[0211] According to an embodiment of the first aspect of the present application, as Figure 15 shown, the cooling device 200 includes:

[0212] An outer box 213; an inner box 214, the inner box 214 is connected to the outer box 213, a sealed cavity is formed between the inner box 214 and the outer box 213, and a heat exchange chamber 215 is formed in the inner box 214;

[0213] A heat insulation member 234, disposed in the sealed cavity, the heat insulation member 234 is located between the heat exchange chamber 215 and the outer box 213, and the heat insulation member 234 is adapted to block the heat exchange between the external environment and the heat exchange chamber 215;

[0214] A cooling element 241, disposed in the heat exchange chamber 215, a gas passage 242 is formed between the cooling element 241 and the inner wall surface of the heat exchange chamber 215, and the cooling element 241 is adapted to cool the gas in the gas passage 242.

[0215] According to the cooling device 200 of the embodiment of the present application, after the gas enters the heat exchange chamber 215, it flows along the gas passage 242. During the flow of the gas, the gas exchanges heat with the cooling element 241 to realize the cooling treatment of the gas. During the standby and operation of the cooling device 200, the heat insulation member 234 blocks the heat exchange between the external environment and the heat exchange chamber 215, that is, the heat insulation member 234 can block the heat exchange between the external environment and the cooling element 241, thereby effectively reducing the entry of the external environment heat into the inside of the cooling device 200 in the form of heat conduction, and improving the standby time and working time of the cooling device 200.

[0216] It can be understood that the cooling device 200 in the related art is vulnerable to the influence of the external environmental temperature. When the external environmental temperature is relatively high, external heat is likely to transfer to the inside of the cooling device 200, resulting in a large loss of the cooling capacity of the cooling device 200. As a result, it is necessary to increase the cold storage material of the cooling device 200, leading to an excessive weight and volume of the cooling device 200. However, in this application, the heat exchange between the cooling device 200 and the external environment is reduced through the heat insulation member 234, the cold consumption of the cooling device 200 is decreased, and the influence of the external environment on the cooling device 200 is reduced, which can effectively avoid the excessive weight and volume of the cooling device 200.

[0217] In an embodiment of the present application, the outer box 213 and the inner box 214 satisfy the following conditions: the flexural strength is between 1200 - 1500 MPa (TA1 titanium alloy) or 400 - 600 MPa (304 stainless steel), the tensile strength is between 650 - 1200 MPa (TA1 titanium alloy) or 200 - 1100 MPa (304 stainless steel), the compressive strength is between 700 - 1500 MPa (TA1 titanium alloy) or 500 - 700 MPa (304 stainless steel), the shear strength is between 400 - 850 MPa (TA1 titanium alloy), the Brinell hardness is between 200 - 300 HB (TA1 titanium alloy) or 180 - 220 HB (304 stainless steel), the thermal conductivity is between 10.0 - 25.0 W / (m·K) (TA1 titanium alloy and 304 stainless steel), and the density is between 4.0 - 8.0 g / cm 3 (TA1 titanium alloy and 304 stainless steel).

[0218] In an embodiment of the present application, the thermal conductivity of the heat insulation member 234 is 0.015 W / (m·K) - 0.025 W / (m·K), and the thickness of the heat insulation member 234 is 1.0 mm - 50.0 mm. It can be understood that by setting the thermal conductivity and thickness of the heat insulation member 234, the heat insulation effect of the heat insulation member 234 is ensured. It can be understood that the density of the heat insulation member 234 is 0.001 g / cm 3 - 1.5 g / cm 3 .

[0219] In an embodiment of the present application, the heat insulation member 234 is, for example, made of silica aerogel material.

[0220] In an embodiment of the present application, as Figure 15 shown, one side of the heat insulation member 234 abuts against the inner box 214, and the other side of the heat insulation member 234 abuts against the outer box 213. It can be understood that the heat insulation member 234 abuts against both the outer box 213 and the inner box 214 at the same time, and the outer box 213 and the inner box 214 can play a limiting role on the heat insulation member 234, so that the heat insulation member 234 can be kept stable.

[0221] In an embodiment of the present application, as Figure 15 shown, a first air inlet hole 222 is provided at the first end of the outer box 213, a second air inlet hole 223 is provided at the first end of the inner box 214, the first air inlet hole 222 communicates with the second air inlet hole 223, and the second air inlet hole 223 communicates with the gas passage 242. It can be understood that through the arrangement of the first air inlet hole 222 and the second air inlet hole 223, gas can enter the gas passage 242 through the first air inlet hole 222 and the second air inlet hole 223, ensuring smooth gas flow.

[0222] In an embodiment of the present application, as Figure 15 shown, a first air outlet hole 224 is provided at the second end of the outer box 213, a second air outlet hole 225 is provided at the second end of the inner box 214, the first air outlet hole 224 communicates with the second air outlet hole 225, and the second air outlet hole 225 communicates with the gas passage 242. It can be understood that through the arrangement of the first air outlet hole 224 and the second air outlet hole 225, gas can flow out of the gas passage 242 through the first air outlet hole 224 and the second air outlet hole 225, ensuring smooth gas flow.

[0223] In an embodiment of the present application, the outer box 213 includes an upper outer box 213 and a lower outer box 213, the inner box 214 includes an upper inner box 214 and a lower inner box 214. The upper outer box 213 is connected to the upper inner box 214 to form a cover body 211, the lower outer box 213 is connected to the lower inner box 214, and the lower outer box 213 and the lower inner box 214 are connected to form a main body 212. The cover body 211 and the main body 212 are detachably connected. It can be understood that the detachable connection between the cover body 211 and the main body 212 allows the cover body 211 to be detached when the refrigeration component 241 fails or needs to be replaced, and then the refrigeration component 241 can be taken out for maintenance or replacement, which is convenient for operation. It can be understood that the cover body 211 is detachably connected to the main body 212, for example, by screw connection, magnetic attraction or any other suitable means.

[0224] In an embodiment of the present application, the cover body 211 is provided with a lower convex portion. When the cover body 211 is connected to the main body 212, the inner wall surface of the lower convex portion abuts against the outer wall surface of the main body 212, and a vacuum layer 230 is formed inside the lower convex portion. It can be understood that the lower convex portion can separate the connection between the cover body 211 and the main body 212 from the external environment, that is, the vacuum layer 230 at the lower convex portion can separate the connection between the cover body 211 and the main body 212 from the external environment, further preventing the external environment from exchanging heat with the heat exchange cavity 215 and the refrigeration component 241 in the heat exchange cavity 215 through the connection between the cover body 211 and the main body 212, ensuring the separation effect.

[0225] In an embodiment of the present application, as Figure 15As shown, the cooling device 200 includes a support assembly 243. The support assembly 243 is disposed within the heat exchange chamber 215, between the refrigerating member 241 and the inner wall surface of the heat exchange chamber 215. The support assembly 243 is used to support the refrigerating member 241. It can be understood that by supporting and fixing the refrigerating member 241 through the support assembly 243, the refrigerating member 241 can be stably installed within the heat exchange chamber 215 of the box body 210, preventing the refrigerating member 241 from tilting during use. It can be understood that the gas passage 242 is formed between the refrigerating member 241 and the inner wall surface of the heat exchange chamber 215. The stable installation of the refrigerating member 241 ensures the smoothness of the gas passage 242, preventing the gas passage 242 from being blocked due to the tilting of the refrigerating member 241.

[0226] In an embodiment of the present application, as Figure 15 shown, the support assembly 243 includes a plurality of support blocks 244. One end of the support block 244 abuts against the refrigerating member 241, and the other end of the support block 244 abuts against the inner wall surface of the heat exchange chamber 215. It can be understood that by respectively abutting one ends of different support blocks 244 against different positions of the refrigerating member 241, simultaneous support of different positions of the refrigerating member 241 is achieved. The support block 244 connects the refrigerating member 241 and the inner wall surface of the heat exchange chamber 215, preventing the refrigerating member 241 from tilting towards the inner wall surface of the heat exchange chamber 215 and ensuring the installation stability of the refrigerating member 241. Exemplarily, support blocks 244 are provided between the side wall surface of the heat exchange chamber 215 and the refrigerating member 241, and between the bottom wall of the heat exchange chamber 215 and the refrigerating member 241.

[0227] According to an embodiment of the second aspect of the present application, the respirator includes the above-mentioned cooling device 200.

[0228] In the respirator according to an embodiment of the present application, after the gas enters the heat exchange chamber 215, it flows along the gas passage 242. During the gas flow, the gas exchanges heat with the refrigerating member 241, achieving the cooling treatment of the gas. During the standby and operation of the cooling device 200, the heat insulation member 234 blocks the heat exchange between the external environment and the heat exchange chamber 215, that is, the heat insulation member 234 can block the heat exchange between the external environment and the refrigerating member 241, thereby effectively reducing the entry of external environmental heat into the interior of the cooling device 200 in the form of heat conduction and increasing the standby duration and operation duration of the cooling device 200.

[0229] According to an embodiment of the first aspect of the present application, as Figure 16 and Figure 17 shown, the cooling device 200 includes:

[0230] The box body 210 forms a heat exchange cavity 215. An input port 220 communicating with the heat exchange cavity 215 is provided at the first end of the box body 210, and an output port 221 communicating with the heat exchange cavity 215 is provided at the second end of the box body 210. A heat insulation layer 233 is provided on the inner wall surface and / or the outer wall surface of the box body 210, and an anti-radiation layer 232 is provided on the inner wall surface and / or the outer wall surface of the box body 210;

[0231] The refrigeration pipe is arranged in the heat exchange cavity 215. A refrigeration space is provided between the refrigeration pipe and the inner wall surface of the heat exchange cavity 215. A cold storage member is installed in one of the refrigeration pipe and the refrigeration space. The cold storage member is adapted to exchange heat with the refrigeration pipe, and a gas passage 242 is formed in the other of the refrigeration pipe and the refrigeration space. The gas passage 242 communicates the input port 220 and the output port 221.

[0232] For the cooling device 200 according to the embodiment of the present application, gas enters the heat exchange cavity 215 from the input port 220, and then flows along the gas passage 242 to the output port 221. When the gas flows through the gas passage 242, the gas will contact the pipe wall of the refrigeration pipe, and the pipe wall of the refrigeration pipe abuts against the cold storage member. Furthermore, the cold storage member can cool the gas in the gas passage 242, so that the temperature of the gas flowing out from the output port 221 is lower than the temperature of the gas flowing in from the input port 220, thereby realizing the cooling of the gas. During the working and standby processes of the cooling device 200, the anti-radiation layer 232 can reflect the heat transferred to the cooling device 200 by the outside in the form of radiation back to the external environment, effectively blocking the heat exchange between the inside of the cooling device 200 and the external environment, and reducing the interference of the external environment on the cooling device 200. At the same time, the heat insulation layer 233 blocks the heat exchange between the external environment and the heat exchange cavity 215, that is, the heat insulation layer 233 can block the heat exchange between the external environment and the refrigeration member 241. Furthermore, the heat of the external environment entering the inside of the cooling device 200 in the form of heat conduction can be effectively reduced, and the standby time and working time of the cooling device 200 are increased. In the present application, the pipe wall of the refrigeration pipe is used as the contact surface with the gas, increasing the heat exchange area, and thereby improving the cooling efficiency of the gas; by providing the anti-radiation layer 232 and the heat insulation layer 233 at the box body 210, the heat of the external environment entering the cooling device 200 is effectively avoided, and the influence of the external environment temperature on the cooling device 200 is reduced.

[0233] It can be understood that when the cold storage member is installed in the refrigeration pipe and the gas passage 242 is formed at the refrigeration space, the gas enters the gas passage 242 between the refrigeration pipe and the wall surface of the heat exchange cavity 215 from the input port 220, and the gas transfers heat to the cold storage member in the refrigeration pipe by heat conduction. That is, the outer wall surface of the refrigeration pipe can exchange heat with the gas, increasing the heat exchange area and improving the cooling efficiency of the high-temperature gas.

[0234] When a gas passage 242 is formed in the refrigeration pipe and a cold storage member is provided in the refrigeration space, and at this time the cold storage member is in contact with the outer wall surface of the refrigeration pipe, when the gas enters the gas passage 242 in the refrigeration pipe from the input port 220, the gas will transfer heat to the cold storage member before the walls of the refrigeration pipe and the heat exchange chamber 215 through heat conduction, that is, the inner wall surface of the refrigeration pipe can exchange heat with the gas, increasing the heat exchange area and improving the cooling efficiency of the high-temperature gas.

[0235] It can be understood that the basic ways of heat transfer include heat conduction, heat convection and heat radiation. The contribution of heat radiation to heat transfer is about 15% and cannot be ignored. General heat radiation is mainly transmitted by visible light and infrared rays with longer wavelengths (0.4μm - 400μm). Since heat radiation can also be transmitted in a vacuum, in this application, by coating the anti-radiation layer 232, the heat radiation in the visible light region and the near-infrared region is reflected to achieve the purpose of avoiding or reducing the entry of external environmental heat into the cooling device 200.

[0236] It can be understood that the cooling device 200 in the related art is easily affected by the external environmental temperature. When the external environmental temperature is relatively high, external heat is likely to transfer into the cooling device 200, resulting in a large loss of the cooling capacity of the cooling device 200. Furthermore, it is necessary to increase the cold storage material of the cooling device 200, resulting in an excessive weight and volume of the cooling device 200. However, in this application, the heat exchange between the cooling device 200 and the external environment is reduced by the anti-radiation layer 232, the cold consumption of the cooling device 200 is reduced, and the influence of the external environment on the cooling device 200 is reduced, effectively avoiding the excessive weight and volume of the cooling device 200. Exemplarily, the anti-radiation layer 232 is, for example, a metal anti-radiation layer 232 such as silver, gold, copper, chromium, etc.

[0237] In an embodiment of the present application, as Figure 16 and Figure 17 shown, the anti-radiation layer 232 is arranged around the heat exchange chamber 215. It can be understood that arranging the anti-radiation layer 232 around the heat exchange chamber 215 enables the anti-radiation layer 232 to surround the heat exchange chamber 215, so that the anti-radiation layer 232 can provide all-round protection for the heat exchange chamber 215, effectively avoiding the entry of external heat radiation into the heat exchange chamber 215 and reducing the influence of the external environmental temperature on the cooling device 200.

[0238] In an embodiment of the present application, the thickness of the anti-radiation layer 232 on the inner wall surface of the box body 210 is different from the thickness of the anti-radiation layer 232 on the outer wall surface of the box body 210. It can be understood that by providing anti-radiation layers 232 with different thicknesses on the inner wall surface and the outer wall surface of the box body 210, the combined anti-radiation layers 232 with different thicknesses can improve the heat radiation reflection ability of the cooling device 200, and thus effectively reflect the heat transferred to the cooling device 200 in the form of radiation from the outside back to the external environment, which can extend the working duration and standby duration of the cooling device 200. It can be understood that through the combination of anti-radiation layers 232 with different thicknesses, it is ensured that the light reflectivity of the cooling device 200 for light with a wavelength between 0.4 μm and 400 μm is not less than 85%.

[0239] In an embodiment of the present application, the material of the anti-radiation layer 232 on the inner wall surface of the box body 210 is different from the material of the anti-radiation layer 232 on the outer wall surface of the box body 210. It can be understood that by providing anti-radiation layers 232 with different materials on the inner wall surface and the outer wall surface of the box body 210, through the combination of anti-radiation layers 232 with different materials, the heat radiation reflection ability of the cooling device 200 can be improved, and the heat transferred to the cooling device 200 in the form of radiation from the outside can be effectively reflected back to the external environment, which can extend the working duration and standby duration of the cooling device 200.

[0240] In an embodiment of the present application, as Figure 16 shown, the anti-radiation layer 232 on the outer wall surface of the box body 210 is located between the heat insulation layer 233 and the outer wall surface of the box body 210. It can be understood that by coating the anti-radiation layer 232 on the outer wall surface of the box body 210 and then coating a heat insulation layer 233 on the anti-radiation layer 232, through the cooperation of the heat insulation layer 233 and the anti-radiation layer 232, the heat of the external environment can be effectively blocked outside the cooling device 200, reducing the influence of the external environment on the cooling device 200.

[0241] In an embodiment of the present application, the thickness of the anti-radiation layer 232 is 1 μm - 100 μm. It can be understood that by setting the thickness of the anti-radiation layer 232 between 1 μm and 100 μm, the anti-radiation effect of the anti-radiation layer 232 is ensured. Exemplarily, metal coatings such as gold, silver, copper, and chromium can be selected as the anti-radiation layer 232 on the outer wall surface of the box body 210. Exemplarily, the thickness of the anti-radiation layer 232 on the outer wall surface of the box body 210 does not exceed 50 μm.

[0242] In one embodiment of the present application, the thickness of the heat insulation layer 233 is 0.1 mm - 5.0 mm. It can be understood that setting the thickness of the heat insulation layer 233 to 0.1 mm - 5.0 mm ensures the heat insulation effect of the heat insulation layer 233. Exemplarily, the heat insulation layer 233 can be an acrylic resin layer, an alkyd resin layer, a fluororesin layer, an epoxy resin layer, an epoxy ester layer, a nitrile rubber layer, a polyurethane layer, an acrylic alkyd resin layer, an organosilicon modified resin layer, an organosilicon modified alkyd resin layer, a polyethylene polypropylene resin layer, etc.

[0243] In one embodiment of the present application, the thermal conductivity of the heat insulation layer 233 is 0.02 W / (m·K) - 0.30 W / (m·K). It can be understood that setting the thermal conductivity of the heat insulation layer 233 to 0.02 W / (m·K) - 0.30 W / (m·K) ensures the heat insulation effect of the heat insulation layer 233.

[0244] In one embodiment of the present application, as Figure 16 and Figure 17 shown, the refrigeration pipe extends along the direction from the input port 220 to the output port 221. It can be understood that the refrigeration pipe extends along the direction from the input port 220 to the output port 221, increasing the length of the refrigeration pipe, thereby ensuring the wall area of the refrigeration pipe and increasing the heat exchange area between the gas and the refrigeration pipe.

[0245] In one embodiment of the present application, as Figure 16 and Figure 17 shown, the gas cooler includes a plurality of refrigeration pipes, and there is a gap between adjacent two refrigeration pipes. It can be understood that by providing a plurality of refrigeration pipes, the gas heat exchange area is further increased, ensuring the gas cooling rate. And there is a gap between adjacent two refrigeration pipes, ensuring that the outer wall surfaces of the refrigeration pipes can all exchange heat with the gas or contact the cold storage member, avoiding the situation where the heat exchange area is reduced due to the contact between adjacent two refrigeration pipes.

[0246] In one embodiment of the present application, the thermal conductivity of the refrigeration pipe is 0.01 W / (m·K) - 1.5 W / (m·K). It can be understood that by setting the thermal conductivity of the refrigeration pipe, the heat conduction effect of the refrigeration pipe is ensured, so that the gas can exchange heat with the cold storage member through the refrigeration pipe. It can be understood that the refrigeration pipe made of a material with a low thermal conductivity can control the heat exchange rate between the gas and the cold storage material while ensuring that the gas can exchange heat with the cold storage material through the refrigeration pipe, realizing a small-scale cooling of the high-temperature gas. At the same time, with the relatively large heat exchange area of the refrigeration pipe, the temperature of the high-temperature gas can be reduced to an appropriate value. In this embodiment, the heat exchange area is increased through the refrigeration pipe, and at the same time, by setting the thermal conductivity of the refrigeration pipe, the heat exchange rate between the gas and the cold storage material is controlled, which can narrow the gas temperature drop range in the early and late stages of the service life of the gas cooler, improve the utilization rate of the cold storage member, and reduce the ineffective loss of the cold storage member.

[0247] In one embodiment of the present application, as Figure 16 and Figure 17 shown, the box body 210 includes an outer box 213 and an inner box 214. The outer box 213 forms a first cavity, the inner box 214 is installed in the first cavity, the inner box 214 forms a heat exchange cavity 215, and an anti-radiation layer 232 is provided on the inner wall surface of the outer box 213 and / or the outer wall surface of the inner box 214. It can be understood that the anti-radiation layer 232 can block the external heat at the outer box 213 or the inner box 214, effectively reducing the heat entering the heat exchange cavity 215 from the external environment. It can be understood that by setting the anti-radiation layer 232 at both the outer box 213 and the inner box 214, through the two anti-radiation layers 232, the heat reflection ability of the cooling device 200 can be effectively improved, and the external heat can be effectively reflected back to the external environment.

[0248] In the embodiment of the present application, the outer box 213 and the inner box 214 meet the following conditions: the flexural strength is between 1200 - 1500 MPa (TA1 titanium alloy) or 400 - 600 Mpa (304 stainless steel), the tensile strength is between 650 - 1200 MPa (TA1 titanium alloy) or 200 - 1100 MPa (304 stainless steel), the compressive strength is between 700 - 1500 MPa (TA1 titanium alloy) or 500 - 700 MPa (304 stainless steel), the shear strength is between 400 - 850 MPa (TA1 titanium alloy), the Brinell hardness is between 200 - 300 HB (TA1 titanium alloy) or 180 - 220 HB (304 stainless steel), the thermal conductivity is between 10.0 - 25.0 W / (m·K) (TA1 titanium alloy and 304 stainless steel), and the density is between 4.0 - 8.0 g / cm 3 (TA1 titanium alloy and 304 stainless steel).

[0249] In one embodiment of the present application, as Figure 16 shown, a vacuum layer 230 is formed between the outer box 213 and the inner box 214, and the vacuum layer 230 is disposed around the heat exchange cavity 215. It can be understood that the vacuum layer 230 separates the heat exchange cavity 215 from the external environment, and the vacuum layer 230 can effectively block the heat exchange between the refrigerating member 241 and the external environment, reducing the consumption of the refrigerating member 241. That is, in this embodiment, by arranging the vacuum layer 230 around the heat exchange cavity 215, effective isolation between the refrigerating member 241 and the external environment is achieved, the heat exchange between the refrigerating member 241 and the external environment is reduced, and the influence of the external environmental temperature on the cooling device 200 is reduced. It can be understood that the two main ways of heat transfer are heat conduction and heat convection, and these two ways account for more than 85% of the heat transfer energy. By avoiding or reducing heat conduction and heat convection between the external environment and the inside of the cooling device 200, the purpose of reducing the influence of the external environment can be achieved.

[0250] The essence of heat conduction and heat convection is the collision between gas molecules and the container wall and between gas molecules. By providing a vacuum layer 230 inside the box body 210, since the number of gas molecules in the vacuum layer 230 decreases, the gas density decreases, and the mean free path of gas molecules increases, the collision frequency and intensity between gas molecules and between gas molecules and the container wall are relatively weakened, thereby avoiding or reducing the heat transfer between the external environment and the cold storage material inside the cooling device 200, prolonging the effective working time, and at the same time reducing the influence of external environmental fluctuations on the internal cooling process, realizing the stable operation of the cooling device 200.

[0251] It can be understood that the cooling device 200 in the related art is easily affected by the external environmental temperature. When the external environmental temperature is relatively high, external heat easily transfers to the inside of the cooling device 200, resulting in a large amount of loss of the cold quantity of the cooling device 200. Furthermore, it is necessary to increase the cold storage material of the cooling device 200, resulting in an excessive weight and volume of the cooling device 200. However, in the present application, the heat exchange between the cooling device 200 and the external environment is reduced by the vacuum layer 230, the cold quantity consumption of the cooling device 200 is reduced, the influence of the external environment on the cooling device 200 is reduced, and the excessive weight and volume of the cooling device 200 can be effectively avoided.

[0252] In one embodiment of the present application, a gas suction member is provided inside the vacuum layer 230. It can be understood that the gas suction member can absorb the gas inside the vacuum layer 230, so that the pressure inside the vacuum layer 230 is maintained below 10-2 Pa, ensuring the separation effect of the vacuum layer 230 and effectively separating the heat exchange cavity 215 from the external environment.

[0253] In an embodiment of the present application, a second cavity is formed between the outer box 213 and the inner box 214. It can be understood that by forming the second cavity between the outer box 213 and the inner box 214, the second cavity can be used to place heat insulation materials to reduce the heat exchange between the heat exchange cavity 215 and the external environment; the second cavity can also be used as an air cavity, when the temperature of the external environment is much lower than the temperature of the air in the heat exchange cavity 215, so that the heat of the air in the heat exchange cavity 215 can be appropriately dissipated to the outside.

[0254] In an embodiment of the present application, as Figure 17 shown, a heat insulation member 231 is provided in the second cavity. It can be understood that the heat insulation member 231 can insulate the heat exchange cavity 215, that is, it can separate the heat exchange cavity 215 from the external environment, effectively blocking the heat exchange between the external environment and the heat exchange cavity 215, and reducing the influence of the external environment on the cooling device 200.

[0255] In an embodiment of the present application, the thermal conductivity of the heat insulation member 231 is 0.015 W / (m·K)-0.025 W / (m·K), and the thickness of the heat insulation member 231 is 1.0 mm-50.0 mm. It can be understood that by setting the thermal conductivity and thickness of the heat insulation member 231, the heat insulation effect of the heat insulation member 231 is ensured. It can be understood that the density of the heat insulation member 231 is 0.001 g / cm 3 -1.5 g / cm 3 .

[0256] In an embodiment of the present application, the heat insulation member 231 is, for example, made of silica aerogel material.

[0257] In an embodiment of the present application, as Figure 16 and Figure 17 shown, the cooling device 200 includes a support plate 245, the support plate 245 is fixedly installed in the heat exchange cavity 215, and the support plate 245 is formed with a plurality of channels, and refrigeration pipes are installed in some of the channels. It can be understood that by installing the refrigeration pipes at some of the channels of the support plate 245, the support plate 245 can play a role in limiting and fixing the refrigeration plate. The remaining channels without installed refrigeration pipes can be used as gas channels 242, so that gas can flow through the refrigeration pipes for heat exchange. It can be understood that the plurality of refrigeration pipes are installed at the support plate 245 at uniform intervals. It can be understood that the support plate 245 can be a separate component or a part of the inner box 214, for example, the end cover of the inner box 214.

[0258] In an embodiment of the present application, as Figure 16 and Figure 17As shown in the figure, the cooling device 200 includes two support plates 245 which are arranged oppositely. A gas channel 242 is formed between the two support plates 245. An air outlet chamber 227 is formed between the support plate 245 near the first end of the box body 210 and the first end of the box body 210, and an air inlet chamber 226 is formed between the support plate 245 near the second end of the box body 210 and the second end of the box body 210. The air outlet chamber 227 communicates with the output port 221 and the gas channel 242, and the air inlet chamber 226 communicates with the input port 220 and the gas channel 242. It can be understood that the gas flows to the air inlet chamber 226 through the input port 220, and then the gas flows through the pore channels of the support plate 245 to the gas channel 242 between the two support plates 245. At this time, the cold storage element cools the gas through the refrigeration pipe, and then the gas flows through the pore channels of the support plate 245 to the air outlet chamber 227, that is, the gas flows into the air outlet chamber 227 from different pore channels of the support plate 245. After the gas is mixed in the air outlet chamber 227, it flows to the output port 221. That is to say, through the setting of the air outlet chamber 227 in this embodiment, the mixing of the gas is realized, and the uniformity of the temperature of the gas flowing out from the output port 221 is ensured.

[0259] It can be understood that at least two pore channels of the support plate 245 are installed with refrigeration pipes, and at least two pore channels are vacant. Whether the vacant pore channels are used as the gas channel 242 or a gas channel 242 is formed in the refrigeration pipe, there are at least two gas channels 242 in the heat exchange chamber 215. Then the gas will flow to the air outlet chamber 227 through different gas channels 242. The temperatures of the gas flowing through different gas channels 242 may be different, and the air outlet chamber 227 can mix the gas flowing out from different gas channels 242.

[0260] It can be understood that when the support plate 245 is a part of the inner box 214, for example, an end structure of the inner box 214, the air outlet chamber 227 is formed between the first end of the inner box 214 and the first end of the outer box 213, and the air inlet chamber 226 is formed between the second end of the inner box 214 and the second end of the outer box 213.

[0261] In an embodiment of the present application, the cross-sectional area of the air outlet chamber 227 is larger than the cross-sectional area of the output port 221, and the cross-sectional area of the air inlet chamber 226 is larger than the cross-sectional area of the input port 220. It can be understood that when the gas flows from the input port 220 to the air inlet chamber 226, since the cross-sectional area of the air inlet chamber 226 is larger than the cross-sectional area of the input port 220, the flow rate of the gas will decrease, thereby prolonging the time for the gas to flow through the gas channel 242 and ensuring the cooling effect on the gas. It can be understood that the cross-sectional area of the air outlet chamber 227 is larger than the cross-sectional area of the output port 221, so that the gas flowing through the gas channel 242 can be fully mixed and uniform at the air outlet chamber 227 before flowing to the output port 221.

[0262] According to an embodiment of the second aspect of the present application, the breathing apparatus includes the above-mentioned cooling device 200.

[0263] In the breathing apparatus according to the embodiment of the present application, gas enters the heat exchange cavity 215 from the input port 220, and then flows along the gas passage 242 to the output port 221. When the gas flows through the gas passage 242, the gas contacts the tube wall of the refrigeration tube, and the tube wall of the refrigeration tube abuts against the cold storage member. Furthermore, the cold storage member can cool the gas in the gas passage 242, so that the temperature of the gas flowing out from the output port 221 is lower than the temperature of the gas flowing into from the input port 220, thereby realizing the cooling of the gas. During the operation and standby of the cooling device 200, the anti-radiation layer 232 can reflect the heat transferred to the cooling device 200 from the outside in the form of radiation back to the external environment, effectively blocking the heat exchange between the inside of the cooling device 200 and the external environment, and reducing the interference of the external environment on the cooling device 200. At the same time, the heat insulation layer 233 blocks the heat exchange between the external environment and the heat exchange cavity 215, that is, the heat insulation layer 233 can block the heat exchange between the external environment and the refrigeration member 241. Furthermore, it can effectively reduce the heat of the external environment from entering the inside of the cooling device 200 in the form of heat conduction, and improve the standby time and working time of the cooling device 200. The present application uses the tube wall of the refrigeration tube as the contact surface with the gas, increasing the heat exchange area, thereby improving the cooling efficiency of the gas; by providing the anti-radiation layer 232 and the heat insulation layer 233 at the box body 210, it effectively prevents the heat of the external environment from entering the breathing apparatus, reducing the influence of the external environment temperature on the breathing apparatus.

[0264] The rescue equipment according to the embodiment of the present invention includes the above-mentioned fire-fighting respiratory protection system applicable to the fire scene. The rescue equipment can be a breathing apparatus, a self-rescuer, etc. The rescue equipment can be used in emergency scenes such as fire scenes and mine rescue.

[0265] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fire breathing protection system suitable for fire scenes, characterized in that: include: Expiratory tube (100); Suction pipe (103); An absorption device (300), the absorption device (300) being in communication with the exhalation tube (100), the absorption device (300) being suitable for absorbing carbon dioxide, and the absorption device (300) comprising: A housing (310), wherein a mounting cavity (311) is provided inside the housing (310), and an air inlet (312) and an air outlet (313) are provided on the housing (310); A multi-hole plate assembly (350) is disposed in the installation cavity (311), wherein the multi-hole plate assembly (350) divides the installation cavity (311) into a plurality of buffer cavities (314) and a plurality of reaction cavities (330) that are spaced apart from each other; A solid alkaline substance, wherein the solid alkaline substance is disposed in the reaction chamber (330); A breathing airbag (104), the breathing airbag (104) being in communication with the absorption device (300); an oxygen generator (105), the oxygen generator (105) being in communication with the breathing airbag (104), the oxygen generator (105) being a chemical oxygen generator; A cooling device (200), wherein an inlet of the cooling device (200) is in communication with the breathing airbag (104), and an outlet of the cooling device (200) is in communication with the air intake pipe (103), and the cooling device (200) comprises: A box body (210), wherein the box body (210) is formed with a refrigeration space and a gas channel (242), a first end of the box body (210) is provided with an air inlet (312) communicating with the gas channel (242), a second end of the box body (210) is provided with an air outlet (313) communicating with the gas channel (242), and a peripheral wall of the box body (210) is provided with at least one blocking layer; A refrigeration component (241), the refrigeration component (241) being arranged in the refrigeration space, the refrigeration component (241) being in contact with a peripheral wall of the gas channel (242) to perform heat exchange; A controller (107), the controller (107) being communicatively connected with the breathing airbag (104), the oxygen generator (105) and the cooling device (200); The volumes of the plurality of reaction chambers (330) are arranged to decrease in sequence from the air inlet (312) toward the air outlet (313); At least one gas sensor (110) is provided in the breathing airbag (104), the gas sensor being communicatively connected to the controller (107), the gas sensor (110) being used to detect the oxygen content and the carbon dioxide content of the mixed gas in the breathing airbag (104), so as to control the oxygen generator (105) based on the oxygen content detected by the gas sensor (110); at least one first temperature sensor (111) is provided in the cooling device, the first temperature sensor (111) being communicatively connected to the controller (107), the controller (107) controlling the heat exchange speed of the cooling device based on the detection value of the first temperature sensor (111), and adjusting the speed at which the oxygen generator (105) releases oxygen.

2. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: A first one-way valve (101) is provided between the exhalation tube (100) and the absorption device (300), and a drainage pipe (102) is provided between the first one-way valve (101) and the absorption device (300).

3. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: At least one gas sensor (110) is provided in the absorption device (300), and the gas sensor (110) is communicatively connected to the controller (107).

4. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: An alarm (201) is also provided in the cooling device (200), and the alarm (201) is connected to the first temperature sensor (111). When the detected temperature of the first temperature sensor (111) is greater than or equal to the safety temperature, the alarm (201) sounds an alarm.

5. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: The oxygen generator (105) is provided with a starter and a second temperature sensor (112), and both the starter and the second temperature sensor (112) are in communication connection with the controller (107), and the controller (107) controls the starter to be turned on or off based on the detection value of the second temperature sensor (112).

6. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: The porous plate assembly (350) comprises a first porous plate (351) and a second porous plate (352); the buffer chamber (314) is formed between two adjacent porous plate assemblies (350); and the reaction chamber (330) is formed between the first porous plate (351) and the second porous plate (352) in the same group.

7. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: The absorption device (300) further comprises a partition component (340), wherein the partition component (340) is arranged in the installation cavity (311), and the partition component (340) extends along a first direction of the shell (310) to partition the installation cavity (311) into a plurality of sub-chambers; The porous plate assembly (350) extends along the second direction of the shell (310) to separate the sub-chambers into the buffer chamber (314) and the reaction chamber (330); the buffer chamber (314) and the reaction chamber (330) are arranged at intervals to form a carbon dioxide reaction absorption path; the air inlet (312) is in communication with the buffer chamber (314); and the air outlet (313) is in communication with the reaction chamber (330).

8. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: The cooling device (200) further comprises a refrigeration pipe, the box body (210) forms a heat exchange cavity (215), the refrigeration pipe is arranged in the heat exchange cavity (215), the refrigeration pipe and the inner wall surface of the heat exchange cavity (215) together define the refrigeration space, and the refrigeration pipe defines a gas channel (242).

9. The firefighting breathing protection system suitable for fire scenes according to claim 1, characterized in that: The blocking layer comprises an anti-radiation layer (232), and the anti-radiation layer (232) is provided at least at one of the inner wall surface of the box body (210) and the outer wall surface of the box body (210); And / or, the blocking layer comprises a vacuum layer (230), the box body (210) comprises an inner box (214) and an outer box (213), the inner box (214) is arranged inside the outer box (213), and a vacuum layer (230) is formed between the inner box (214) and the outer box (213).

10. A rescue device, characterized in that: A firefighting breathing protection system suitable for fire scenes comprising any one of claims 1-9.

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