A chemical oxygen fire-fighting self-rescue breathing apparatus

Abstract

This utility model discloses a chemical oxygen fire-fighting self-rescue respirator, belonging to the field of respirator equipment technology. The respirator includes: a breathing hood, a multi-port tube, an air storage bag, and an oxygen generator. The breathing hood has a breathing port; the multi-port tube has a first port, a second port, and a third port; the air storage bag has a heat dissipation chamber, and an air inlet and an air outlet communicating with the heat dissipation chamber; the oxygen generator is located outside the air storage bag, and the oxygen generator has an oxygen generation chamber, and an oxygen generation inlet and an oxygen generation outlet communicating with the oxygen generation chamber; wherein, the breathing port is connected to the first port, the second port is connected to the oxygen generation inlet, the oxygen generation outlet is connected to the air storage inlet, and the air storage outlet is connected to the third port. This respirator can reduce the oxygen supply temperature and the complexity of its structure.

Description

Technical Field

[0001] This utility model relates to the field of breathing apparatus technology, and in particular to a chemical oxygen fire-fighting self-rescue breathing apparatus. Background Technology

[0002] Currently, traditional filter-type breathing masks seen in many public places such as hotels and office buildings primarily use activated carbon as the filter medium. Activated carbon is effective at filtering dust and has some effect on certain toxic gases. In the event of a fire, if the oxygen content in the air drops below 19.5%, symptoms of oxygen deficiency will occur. In a burning building with doors and windows closed, the oxygen concentration will rapidly decrease from the normal 21% to 14%. At this point, muscle coordination will be uncontrollable, and below 10%, respiratory and cardiac failure will occur, potentially leading to death within minutes. Using a filter-type breathing mask in such a situation would be life-threatening. Newer chemical oxygen fire-fighting self-rescue breathing apparatus works by having an oxygen-generating agent react chemically with the carbon dioxide exhaled by the user to produce oxygen, providing a short-term oxygen supply to users in critical oxygen-deficient situations, allowing them to escape danger. However, existing chemical oxygen fire-fighting self-rescue breathing apparatuses have two main problems:

[0003] Firstly, there is the issue of high oxygen supply temperature. Because the chemical oxygen production process generates heat, the resulting oxygen is at a high temperature. Current products have not adequately addressed the issue of oxygen cooling. Inhaling this high-temperature oxygen can burn the respiratory tract, causing additional harm. For example, a previously disclosed chemical oxygen multi-functional respirator features a gas storage bag containing an oxygen tank. Both the gas storage bag and the oxygen tank are equipped with cooling protective layers. When used, exhaled carbon dioxide enters the oxygen tank and undergoes a chemical reaction to produce oxygen. This oxygen is then supplied to the user through an oxygen channel tube within the oxygen tank. Although cooling protective layers are present on both the gas storage bag and the oxygen tank, the oxygen tank, which generates a large amount of heat, is located inside the gas storage bag. As heat accumulates in the oxygen tank, it eventually breaks through and is conducted into the gas storage bag, affecting the heat of the oxygen within the storage bag. Furthermore, because the oxygen is reheated when supplied to the user through the oxygen channel tube inside the oxygen tank, the oxygen temperature used by the user is excessively high.

[0004] Secondly, there is the problem of complex respirator structure. Since chemical oxygen production generates heat, additional cooling mechanisms or multiple air tubes with one-way valves are needed to reduce the oxygen production temperature and separate the airflow, which greatly increases the weight or volume and hinders its use in self-rescue situations. For example, an emergency chemical oxygen self-rescue respirator disclosed in the prior art can be referred to. It achieves the independence of exhalation and inhalation paths through multiple tubes to reduce the heat of oxygen. However, it must introduce multiple tubes and one-way valves, which makes the entire chemical oxygen fire self-rescue respirator complex in structure and inconvenient for use in emergency situations. Utility Model Content

[0005] This invention provides a chemical oxygen fire-fighting self-rescue respirator, which aims to solve the problems in the background technology by reducing the oxygen supply temperature and the complexity of the structure.

[0006] This utility model provides a chemical oxygen fire-fighting self-rescue breathing apparatus, comprising:

[0007] A breathing hood, wherein the breathing hood is provided with a breathing port;

[0008] A multi-port pipe, the multi-port pipe having a first port, a second port and a third port;

[0009] An air storage bag, the air storage bag having a heat dissipation cavity, and an air storage inlet and an air storage outlet communicating with the heat dissipation cavity;

[0010] An oxygen generator is located outside the gas storage bag. The oxygen generator has an oxygen generation chamber, and an oxygen generation inlet and an oxygen generation outlet communicating with the oxygen generation chamber.

[0011] The breathing port is connected to the first pipe port, the second pipe port is connected to the oxygen production inlet, the oxygen production outlet is connected to the gas storage inlet, and the gas storage outlet is connected to the third pipe port.

[0012] In one embodiment, the heat dissipation cavity includes a first cavity and a second cavity;

[0013] The first cavity is connected to the second cavity;

[0014] The first cavity has an air inlet on its wall and is located at the bottom of the oxygen production tank.

[0015] The second cavity has a gas outlet on its wall and is located on the side of the oxygen generator.

[0016] In one embodiment, the number of the third port is at least two;

[0017] The number of the second chambers is at least two, and the two second chambers are located on opposite sides of the oxygen generating tank;

[0018] The gas outlets of the two second cavities are respectively connected to the two third pipe ports.

[0019] In one embodiment, the gas storage inlet and the gas storage outlet are located at opposite ends of the oxygen generation chamber along its axial direction.

[0020] The height of the heat dissipation cavity is greater than the width and length of the heat dissipation cavity.

[0021] In one embodiment, the inner bottom surface of the heat dissipation cavity and the inner side surface of the heat dissipation cavity are connected by an arc-shaped transition, and the inner top surface of the heat dissipation cavity and the inner side surface of the heat dissipation cavity are connected by an arc-shaped transition.

[0022] In one embodiment, the air storage bag also has a vent that communicates with the heat dissipation cavity;

[0023] A vent valve is installed inside the vent, and the vent valve is used to release the gas inside the gas storage bag.

[0024] In one embodiment, the chemical oxygen fire-fighting self-rescue respirator also includes a heat dissipation protective shell;

[0025] The heat dissipation protective shell is fitted over the oxygen production tank, and the heat dissipation protective shell has multiple heat dissipation holes for dissipating the heat of the oxygen production tank.

[0026] In one embodiment, the chemical oxygen fire-fighting self-rescue respirator further includes an oxygen tank, which is connected to the oxygen-generating tank.

[0027] In one embodiment, the breathing hood is detachably connected to the multi-port tube.

[0028] In one embodiment, the chemical oxygen fire-fighting self-rescue respirator further includes a breathing connection assembly;

[0029] The breathing connection assembly includes a breathing enclosure wall, a breathing head, and a breathing connection tube;

[0030] The breathing enclosure wall is fixedly installed on the breathing head cover, and the breathing enclosure wall is arranged around the periphery of the breathing port to form a mounting groove;

[0031] The breathing head includes a breathing head body and a breathing buckle. The breathing head body is plugged into the mounting slot and hinged to the breathing buckle. The breathing buckle is detachably fastened to the breathing enclosure wall.

[0032] One end of the breathing connection tube is detachably connected to the breathing head body, and the other end of the breathing connection tube is detachably connected to the first tube opening.

[0033] As can be seen from the above technical solutions, this utility model has the following advantages:

[0034] This embodiment provides a chemical oxygen fire-fighting self-rescue respirator. When the user exhales carbon dioxide, it enters the oxygen generator through a multi-port tube. The oxygen produced after the reaction, affected by air pressure, flows directly from the lower-pressure outlet of the oxygen generator into the gas storage bag, and then from the gas storage bag's circuit back into the multi-port tube for the user to inhale. During this process, firstly, because the heating oxygen generator is placed outside the gas storage bag, the heat emitted by the generator does not accumulate inside the gas storage bag, preventing the oxygen inside from being affected; secondly, the gas storage bag provides additional heat dissipation space, optimizing the oxygen flow path. After the air bag is cooled and diluted, it can reach an oxygen supply temperature that meets the human body's breathing conditions; thirdly, because the multi-port pipe connects the air storage bag, breathing head mask and oxygen production tank, a large amount of cold oxygen from the air storage bag and a small amount of possible hot oxygen from the oxygen production tank will be drawn into the multi-port pipe when inhaling. In the multi-port pipe, a large amount of cold oxygen can be used to dilute and cool a small amount of hot oxygen. Therefore, the three components work together to achieve the above-mentioned oxygen generation, oxygen cooling and oxygen supply without the need for extra pipelines or valves. The overall structure is simple. It can be seen that the chemical oxygen fire self-rescue breathing apparatus of this embodiment can reduce the oxygen supply temperature and the complexity of the structure. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A complete structural schematic diagram of a chemical oxygen fire-fighting self-rescue respirator provided for an embodiment of this utility model;

[0037] Figure 2 Schematic diagram of the gas storage bag structure in the chemical oxygen fire-fighting self-rescue respirator provided in this embodiment of the utility model Figure 1 ;

[0038] Figure 3 Schematic diagram of the internal structure of the gas storage bag in the chemical oxygen fire-fighting self-rescue respirator provided in this embodiment of the utility model. Figure 2 ;

[0039] Figure 4This is a partially enlarged schematic diagram of the internal structure of the gas storage bag in the chemical oxygen fire-fighting self-rescue respirator provided in an embodiment of the present utility model;

[0040] Figure 5 A schematic diagram illustrating the movement trajectory of carbon dioxide within a chemical oxygen fire-fighting self-rescue respirator, provided as an embodiment of this utility model.

[0041] Figure 6 A schematic diagram illustrating the movement trajectory of oxygen within a chemical oxygen fire-fighting self-rescue breathing apparatus provided in this embodiment of the present invention;

[0042] Figure 7 A schematic diagram of the gas movement trajectory within a chemical oxygen fire-fighting self-rescue breathing apparatus provided in this embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the multi-port pipe and oxygen generator provided in the embodiments of this utility model;

[0044] Figure 9 A schematic diagram of the structure of the oxygen generating tank and the heat dissipation protective shell provided in the embodiment of this utility model;

[0045] Figure 10 A schematic diagram of the structure of an oxygen tank provided in an embodiment of this utility model;

[0046] Figure 11 This is a schematic diagram of the structure of the breathing connection component provided in an embodiment of the present utility model.

[0047] Figure label:

[0048] 1. Breathing hood; 10. Breathing inlet; 2. Multi-port tube; 20. First port; 21. Second port; 22. Third port; 3. Gas storage bag; 30. Heat dissipation chamber; 300. First chamber; 301. Second chamber; 31. Vent valve; 4. Oxygen generator; 5. Heat dissipation protective shell; 6. Oxygen tank; 60. Oxygen valve; 7. Breathing connection assembly; 70. Breathing enclosure wall; 71. Breathing head; 710. Breathing head body; 711. Breathing buckle; 72. Breathing connection tube; a. Oxygen path; b. Carbon dioxide path. Detailed Implementation

[0049] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0050] Existing technologies present two major problems. First, the oxygen supply temperature is high. Because the chemical oxygen production process generates heat, the produced oxygen is at a high temperature. Current products have not adequately addressed the issue of oxygen cooling. Inhaling this high-temperature oxygen can burn the respiratory tract, causing additional harm. For example, a previously disclosed chemical oxygen multi-functional respirator features a gas storage bag containing an oxygen tank. Both the gas storage bag and the oxygen tank are equipped with cooling protective layers. When used, exhaled carbon dioxide enters the oxygen tank and undergoes a chemical reaction to produce oxygen. This oxygen is then supplied to the user through an oxygen channel tube within the oxygen tank. Although cooling protective layers are installed on both the gas storage bag and the oxygen tank, the oxygen tank, which generates a large amount of heat, is located inside the gas storage bag. As heat accumulates within the oxygen tank... Firstly, the heat from the oxygen cylinder will eventually break through and be conducted into the gas storage bag, affecting the heat of the oxygen inside. Furthermore, when oxygen is supplied to the user, it re-passes through the oxygen channel tube inside the oxygen cylinder, causing it to be reheated and resulting in excessively high oxygen temperatures for the user. Secondly, there is the problem of the complex structure of the respirator. To reduce the oxygen production temperature, additional cooling mechanisms or multiple air tubes with one-way valves are required to separate the airflow, significantly increasing weight or volume and hindering use in self-rescue situations. For example, a previously disclosed emergency chemical oxygen self-rescue respirator uses multiple tubes to achieve independent exhalation and inhalation paths to reduce oxygen heat. However, this requires multiple tubes and one-way valves, making the entire chemical oxygen fire self-rescue respirator complex and inconvenient for emergency use.

[0051] This utility model provides a chemical oxygen fire-fighting self-rescue respirator, which aims to solve the technical problems of excessively high oxygen temperature and complex structure in the existing technology.

[0052] Please see Figures 1 to 3 The present invention provides a chemical oxygen fire-fighting self-rescue respirator, comprising:

[0053] Breathing headgear 1, the breathing headgear 1 is provided with a breathing port 10;

[0054] The multi-port pipe 2 has a first port 20, a second port 21 and a third port 22;

[0055] The air storage bag 3 has a heat dissipation cavity 30, and an air storage inlet and an air storage outlet connected to the heat dissipation cavity 30.

[0056] Oxygen generator 4 is located outside the gas storage bag 3. Oxygen generator 4 has an oxygen generation chamber, which is used to react with the waste gas exhaled by the human body to generate oxygen, so as to provide oxygen for users to breathe normally in an oxygen-free environment, as well as an oxygen generation inlet and an oxygen generation outlet connected to the oxygen generation chamber.

[0057] Among them, the breathing port 10 is connected to the first port 20, the second port 21 is connected to the oxygen production inlet, the oxygen production outlet is connected to the gas storage inlet, and the gas storage outlet is connected to the third port 22.

[0058] It should be noted that the connection between the various ports can be sealed through interfaces or through air pipes. That is, there are many different connection methods. Those skilled in the art can choose according to actual needs, and no further restrictions are imposed here. In addition, the internal structure of the oxygen generator 4 is filled with an oxygen-generating agent that can react with carbon dioxide to produce oxygen. The specific selection of the oxygen-generating agent is common knowledge. Those skilled in the art can select the specific oxygen-generating agent according to needs, and no further restrictions are imposed here.

[0059] In this embodiment, during operation, the user puts on the breathing mask 1 and then exhales. Carbon dioxide passes sequentially through the breathing port 10, the first inlet 20, and the second inlet 21, and finally enters the oxygen generation tank 4 through the oxygen generation inlet. Inside the oxygen generation tank 4, the carbon dioxide undergoes a chemical reaction to produce oxygen (see carbon dioxide path b and oxygen path a for details). Figure 5 The oxygen generated after the reaction, affected by the gas pressure, will flow directly from the oxygen outlet of the oxygen production tank 4 and enter the gas storage bag 3 through the gas storage inlet. The oxygen then passes through the circuit of the gas storage bag 3 and enters the multi-port pipe 2 through the third pipe port 22 (oxygen path a can be found in [reference]). Figure 6 The oxygen is then inhaled into the breathing mask 1 by the user (for complete oxygen pathway a and carbon dioxide pathway b, please refer to...). Figure 7 ).

[0060] This embodiment has the following advantages: First, the oxygen temperature is low. Since the heating oxygen generator 4 is placed outside the gas storage bag 3, the heat emitted by the oxygen generator 4 will not accumulate inside the gas storage bag 3, thus avoiding affecting the oxygen inside the gas storage bag 3 and avoiding the situation where the heat source is directly built into the interior as in the prior art, which would affect the cooling effect of the oxygen. Furthermore, because the gas storage bag 3 provides additional heat dissipation space, after being cooled and diluted by the gas storage bag 3, the oxygen supply temperature can reach a level suitable for human respiration. Also, because the multi-port pipe 2 connects the gas storage bag 3, the breathing hood 1, and the oxygen generator 4, it allows for better ventilation during inhalation. The cold oxygen in the gas storage bag 3 can be used to dilute the hot oxygen in the oxygen production tank 4. That is, when inhaling, a large amount of cold oxygen from the gas storage bag 3 will be drawn into the multi-port pipe 2, and a small amount of hot oxygen from the oxygen production tank 4 may be drawn into the multi-port pipe 2. The large amount of cold oxygen and the small amount of hot oxygen neutralize each other, and oxygen cooling can be achieved without adding valves. Secondly, the structure is simple. Since this embodiment can achieve oxygen generation, oxygen supply and oxygen cooling of the breathing head mask 1, gas storage bag 3 and oxygen production tank 4 through a single multi-port pipe 2, that is, oxygen cooling is achieved through the above simple structure.

[0061] In one specific embodiment, such as Figure 3 As shown, to improve the heat dissipation effect of oxygen, the heat dissipation chamber 30 includes a first chamber 300 and a second chamber 301; the first chamber 300 and the second chamber 301 are connected; the first chamber 300 has a gas inlet on its wall and is located at the bottom of the oxygen production tank 4; the second chamber 301 has a gas outlet on its wall and is located on the side of the oxygen production tank 4. In specific implementation, oxygen flows out from the oxygen outlet of the oxygen production tank 4 to the first chamber 300 located at the bottom of the oxygen production tank 4, then flows from the first chamber 300 at the bottom of the oxygen production tank 4 into the second chamber 301, and finally flows from the second chamber 301 into the multi-port tube 2 and finally into the breathing hood 1. The oxygen can be cooled and diluted by the gas storage bag 3. It can be understood that the flow path of oxygen in the gas storage bag 3 is from bottom to top, and the heat dissipation path of oxygen is long, which can effectively improve the heat dissipation effect of oxygen.

[0062] Based on the above embodiments, in one embodiment, as follows: Figures 1 to 7 As shown, to further improve the heat dissipation effect, there are at least two third ports 22, located on the horizontal sides of the multi-port pipe 2; there are at least two second cavities 301, located on opposite sides of the oxygen generating tank 4; the gas storage outlets of the two second cavities 301 are connected to the two third ports 22 respectively, that is, the entire interior of the gas storage bag 3 forms a concave space, and the exterior of the gas storage bag 3 forms a concave structure; in specific implementation, the oxygen generated by the oxygen generating tank 4 enters the first cavity 300 at the bottom, and then... The oxygen in the first chamber 300 is split into two streams. One stream flows in the second chamber 301 on one side, and the other stream flows in the second chamber 301 on the other side. Finally, they enter the multi-port tube 2 through the third port 22 for the user to inhale oxygen. It can be understood that because two second chambers 301 are set up, when the oxygen enters the first chamber 300, it can be split. The two oxygen streams flow and cool down in the two second chambers 301 respectively, avoiding the problem of heat dissipation through a single path and further improving the heat dissipation effect.

[0063] In one specific embodiment, such as Figure 8 As shown, in order to provide users with a more stable airflow, the gas inlet and outlet are located at the two ends of the axial direction of the oxygen generation chamber; the height of the heat dissipation chamber 30 is greater than the width and length of the heat dissipation chamber 30. In specific implementation, since the oxygen airflow is vertical, after the oxygen flows in vertically, the oxygen path is vertical, and the pressure change on the bag wall is more linear and gentle, thus providing a more stable airflow and lower breathing resistance.

[0064] Based on the above embodiments, such as Figures 1 to 7As shown, in one embodiment, in order to further improve a more stable airflow, the inner bottom surface of the heat dissipation cavity 30 and the inner side surface of the heat dissipation cavity 30 are connected by an arc-shaped transition, and the inner top surface of the heat dissipation cavity 30 and the inner side surface of the heat dissipation cavity 30 are connected by an arc-shaped transition. In specific implementation, when the airflow reaches the bottom or top, it will flow along the arc surface, thereby reducing the resistance of gas or liquid flowing at the bottom of the cavity and avoiding the generation of eddies or turbulence in corners.

[0065] As can be seen from the above embodiments, the heat dissipation cavity 30 is specially designed in this embodiment. The heat dissipation cavity 30 is a concave structure with an inner arc surface, which reasonably optimizes the airflow path of oxygen, effectively reduces the temperature of the generated oxygen, and avoids harm to the user from inhaling high-temperature oxygen.

[0066] In one specific embodiment, such as Figure 3 and Figure 4 As shown, in order to improve the safety of the gas storage bag 3, the gas storage bag 3 also has a vent that is connected to the heat dissipation cavity 30; a vent valve 31 is sealed and installed inside the vent. The vent valve 31 is used to release the gas inside the gas storage bag 3. In specific implementation, when there is too much gas inside the gas storage bag 3, the vent valve 31 can release the gas in real time to avoid excessive expansion and safety hazards.

[0067] In one specific embodiment, such as Figure 9 As shown, in order to prevent users from being burned by contact, the chemical oxygen fire self-rescue breathing apparatus also includes a heat dissipation protective shell 5; the heat dissipation protective shell 5 is fitted over the oxygen generation tank 4, and multiple heat dissipation holes are provided on the heat dissipation protective shell 5 to dissipate the heat of the oxygen generation tank 4. In specific implementation, the heat dissipation protective shell 5 can separate the user's hands from the oxygen generation tank 4 to avoid direct contact between the hands and the oxygen generation tank 4.

[0068] In one specific embodiment, such as Figure 3 and Figure 10 As shown, to address the oxygen supply issue during the initial use of the breathing mask, the chemical oxygen fire-fighting self-rescue breathing apparatus also includes an oxygen cylinder 6. The oxygen cylinder 6 is connected to the oxygen generator 4 via a tubing. An oxygen valve 60 is connected to the oxygen cylinder 6. In specific implementation, as follows... Figure 4 As shown, by controlling the opening and closing of the oxygen valve 60, oxygen in the oxygen tank 6 can be introduced into the gas storage bag 3. It can be understood that this setting of the oxygen valve 60 can provide oxygen supply other than chemically generated oxygen when chemical oxygen is not produced, which can solve the oxygen source in the early stage of use and avoid users from being unable to escape due to prolonged oxygen deficiency.

[0069] In one specific embodiment, for ease of use and replacement, the breathing head mask 1 and the multi-port tube 2 are detachably connected. In practice, when the chemical material in the oxygen generator 4 is exhausted, the breathing head mask 1 can be removed from the multi-port tube 2 and a different oxygen generator 4 and gas storage bag 3 can be replaced to facilitate the replacement and supply of oxygen.

[0070] In one embodiment, such as Figure 1 and Figure 11 As shown, the chemical oxygen fire-fighting self-rescue breathing apparatus also includes a breathing connection assembly 7; the breathing connection assembly 7 includes a breathing enclosure wall 70, a breathing head 71, and a breathing connection tube 72; the breathing enclosure wall 70 is fixedly mounted on the breathing head cover 1, and the breathing enclosure wall 70 surrounds the periphery of the breathing port 10 to form a mounting groove; the breathing head 71 includes a breathing head body 710 and a breathing buckle 711, the breathing head body 710 is plugged into the mounting groove, the breathing head body 710 is hinged to the breathing buckle 711, and the breathing buckle 711 is detachably fastened to the breathing enclosure wall 70; the breathing connection tube 72 One end of the breathing connection tube 72 is detachably connected to the breathing head body 710, and the other end of the breathing connection tube 72 is detachably connected to the first port 20. When oxygen needs to be replaced, the breathing connection tube 72 connected to the multi-port tube 2 can be disconnected, and then the breathing connection tube 72 can be connected to the multi-port tube 2 of another chemical oxygen fire self-rescue breathing apparatus to complete the oxygen replacement. It is understandable that the detachability of the breathing connection assembly 7 provides a basis for safe use by the user. When any component or device of the breathing connection assembly 7 has a problem, it can be disassembled and replaced for convenient use.

[0071] It should be noted that the chemical oxygen fire self-rescue respirator is normally stored in a vacuum, which can effectively prevent the oxygen generation tank 4 from reacting with air and becoming ineffective. When the packaging of the chemical oxygen fire self-rescue respirator is damaged or it is used, the oxygen generation tank 4 and oxygen tank 6 will automatically open, ensuring that the user can quickly enter an aerobic breathing state in an oxygen-deficient environment.

[0072] In one specific embodiment, in order to improve heat dissipation capacity, a cooling protection layer is provided on the inner wall of both the gas storage bag 3 and the oxygen production tank 4. The cooling protection layer is used to reduce the temperature of the gas. In specific implementation, this cooling protection layer can be filled with phase change material in the hollow layer of the wall of the gas storage bag 3 and the oxygen production tank 4 to achieve heat absorption.

[0073] It should be noted that the above description of the actual use method is only used to illustrate the beneficial effects brought about by the structure of this device, and does not mean that the protection content of this device involves the above method. After obtaining the device, those skilled in the art can process the data collected by the device themselves. Such data processing can be implemented by known technology and is not an innovation of this application.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

[0076] Finally, it should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A chemical oxygen fire fighting self-rescue breathing apparatus, characterized in that, include: A breathing hood, wherein the breathing hood is provided with a breathing port; A multi-port pipe, the multi-port pipe having a first port, a second port and a third port; An air storage bag, the air storage bag having a heat dissipation cavity, and an air storage inlet and an air storage outlet communicating with the heat dissipation cavity; An oxygen generator is located outside the gas storage bag. The oxygen generator has an oxygen generation chamber, and an oxygen generation inlet and an oxygen generation outlet communicating with the oxygen generation chamber. The breathing port is connected to the first pipe port, the second pipe port is connected to the oxygen production inlet, the oxygen production outlet is connected to the gas storage inlet, and the gas storage outlet is connected to the third pipe port.

2. The chemical oxygen fire service self-rescue breathing apparatus according to claim 1, wherein The heat dissipation cavity includes a first cavity and a second cavity; The first cavity is connected to the second cavity; The first cavity has an air inlet on its wall and is located at the bottom of the oxygen production tank. The second cavity has a gas outlet on its wall and is located on the side of the oxygen generator.

3. The chemical oxygen fire-fighting self-rescue breathing apparatus according to claim 2, characterized in that: The number of the third port is at least two; The number of the second chambers is at least two, and the two second chambers are located on opposite sides of the oxygen generating tank; The gas outlets of the two second cavities are respectively connected to the two third pipe ports.

4. The chemical oxygen fire-fighting self-rescue breathing apparatus according to claim 1, characterized in that: The gas storage inlet and the gas storage outlet are located at opposite ends of the oxygen production chamber along its axial direction. The height of the heat dissipation cavity is greater than the width and length of the heat dissipation cavity.

5. The chemical oxygen fire service self-rescue breathing apparatus according to claim 1, wherein The inner bottom surface of the heat dissipation cavity and the inner side surface of the heat dissipation cavity are connected by an arc-shaped transition, and the inner top surface of the heat dissipation cavity and the inner side surface of the heat dissipation cavity are connected by an arc-shaped transition.

6. The chemical oxygen fire service self-rescue breathing apparatus according to claim 1, wherein The air storage bag also has an air vent that communicates with the heat dissipation cavity; A vent valve is installed inside the vent, and the vent valve is used to release the gas inside the gas storage bag.

7. The chemical oxygen fire service self-rescue breathing apparatus according to claim 1, wherein The chemical oxygen fire-fighting self-rescue breathing apparatus also includes a heat dissipation protective shell; The heat dissipation protective shell is fitted over the oxygen production tank, and the heat dissipation protective shell has multiple heat dissipation holes for dissipating the heat of the oxygen production tank.

8. The chemical oxygen fire service self-rescue breathing apparatus according to claim 1, wherein The chemical oxygen fire-fighting self-rescue breathing apparatus also includes an oxygen tank, which is connected to the oxygen-generating tank.

9. The chemical oxygen fire service self-rescue breathing apparatus according to claim 1, wherein The breathing hood is detachably connected to the multi-port tube.

10. The chemical oxygen fire service self-rescue breathing apparatus according to claim 9, wherein, The chemical oxygen fire-fighting self-rescue breathing apparatus also includes a breathing connection component; The breathing connection assembly includes a breathing enclosure wall, a breathing head, and a breathing connection tube; The breathing enclosure wall is fixedly installed on the breathing head cover, and the breathing enclosure wall is arranged around the periphery of the breathing port to form a mounting groove; The breathing head includes a breathing head body and a breathing buckle. The breathing head body is plugged into the mounting slot and hinged to the breathing buckle. The breathing buckle is detachably fastened to the breathing enclosure wall. One end of the breathing connection tube is detachably connected to the breathing head body, and the other end of the breathing connection tube is detachably connected to the first tube opening.

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