Oxygen mask respirator for escape
By designing an oxygen mask respirator, using disposable die-cast sealed compressed oxygen cylinders and carbon dioxide absorption materials, the problem of insufficient oxygen and complex operation of existing self-rescue respirators in fire or toxic gas environments has been solved, achieving a stable oxygen supply and easy escape.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-07
AI Technical Summary
Existing self-rescue respirators suffer from problems such as insufficient oxygen, filter material failure, unstable chemical reaction, overheating, complex operation, high maintenance costs, and inconvenience in fire or toxic gas environments.
An oxygen mask respirator was designed, comprising a protective face mask, an elastic sealed bottom cover, a carbon dioxide absorption bag, a puncture-initiating device, an oxygen supply device, and an alarm timing device. It uses a disposable die-cast sealed compressed oxygen cylinder, and oxygen supply is triggered by pulling a rope. It is equipped with carbon dioxide absorption material and an alarm timing function, providing convenient oxygen supply and safe escape.
It achieves a stable oxygen supply in fire or toxic gas environments, simplifies the wearing process, reduces maintenance costs, improves portability and escape efficiency, and avoids device overheating and toxic gas release.
Smart Images
Figure CN224085847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an oxygen mask respirator for escape, specifically an oxygen mask respirator for escape in fire or toxic gas environments. Background Technology
[0002] Self-rescue breathing apparatus is mainly used for people to escape in fire environments or environments with toxic or harmful gases. The existing self-rescue breathing apparatus mainly includes the following types:
[0003] The first type is the filter-type fire self-rescue breathing apparatus. Filter-type breathing apparatuses are typically used in fire environments to help people breathe relatively clean air and avoid inhaling toxic fumes and particulate matter. It includes a filter layer, such as an activated carbon layer to adsorb toxic gases, and some chemicals to neutralize toxic gases, such as carbon monoxide. However, this type of breathing apparatus has the following drawbacks: if there is insufficient oxygen at the fire scene, this breathing apparatus may not be able to provide additional oxygen, leaving the user still at risk; in environments with high concentrations of toxic gases, the filter material may not be able to handle the situation, leading to failure; it is also ineffective against certain gases (such as methane and carbon dioxide); high concentrations of toxic gases may exceed the protective limits of the filter layer; and the filter material may age after long-term storage (e.g., activated carbon becomes inactive due to moisture), requiring regular inspection and replacement.
[0004] Secondly, there are chemical oxygen fire-fighting self-rescue breathing apparatuses. The principle of chemical oxygen breathing apparatuses differs from that of filter-type apparatuses. They do not rely on ambient oxygen but generate oxygen through a chemical reaction. For example, chemical substances such as superoxide or chlorine release oxygen through a chemical reaction upon activation. For instance, potassium superoxide reacts with water to produce oxygen, or sodium chlorate decomposes to produce oxygen. Compared to the shortcomings of filter-type apparatuses, their core advantage is that they do not rely on ambient oxygen and can provide a stable oxygen source. However, due to the characteristics of the chemical reaction, they also have certain limitations. Problems with chemical oxygen fire-fighting self-rescue breathing apparatuses include: the stability of the oxygen production reaction, which may generate excessive heat, leading to overheating of the device; and the oxygen-generating agent (such as sodium chlorate) may release trace amounts of chlorine gas. Cl 2) Toxic gases such as carbon monoxide (CO) require secondary purification through a filter layer; the usage time is limited by the dosage of chemicals; once started, it cannot be stopped and must be used up at once; the shelf life and the stability of the chemical substances make it susceptible to moisture and failure; it is heavy and bulky, making it inconvenient to carry; and the production cost is high.
[0005] Thirdly, there is the oxygen cylinder self-rescue respirator. This device stores pure or oxygen-enriched gas under high pressure to provide independent oxygen supply to fire escapees. It is particularly suitable for oxygen-deficient environments or scenarios with extremely high concentrations of toxic gases. Its core advantage is stable oxygen supply without dependence on ambient oxygen. However, it also has certain limitations: High-pressure oxygen cylinders contain compressed oxygen (typically 15-30 MPa) that is released through a pressure reducing valve. Regular checks of cylinder pressure, sealing, and valve reliability are required, resulting in high maintenance costs. Long-term storage may lead to leaks due to material aging. Steel oxygen cylinders are heavy (2-5 kg), making them inconvenient to carry and potentially affecting escape speed. Operation is complex, requiring professional training to correctly wear the mask, open the valve, and adjust breathing rhythm. Untrained individuals are prone to operational errors due to panic, and children, the elderly, or those with mobility impairments may find it difficult to quickly complete the donning process. Utility Model Content
[0006] To address the problems of the existing technologies mentioned above, this invention provides an oxygen mask respirator for escape. This respirator is designed to completely isolate the user's head from the hazardous atmosphere in dangerous situations such as fires, creating an oxygen concentration environment suitable for human survival within the mask. It is particularly suitable for use in fire scenes and environments containing toxic gases, assisting users in their safe escape.
[0007] The purpose of this utility model is achieved as follows:
[0008] An escape oxygen mask respirator includes:
[0009] The protective face shield is configured with a double-layer structure, consisting of an inner layer and an outer layer;
[0010] An elastic sealing base extends circumferentially along the protective face shield and is fixed to the lower edge area of the protective face shield;
[0011] Carbon dioxide absorption bags are placed on the inner wall of the inner layer of the protective mask and are configured to absorb carbon dioxide gas exhaled by the escapee during the use of the mask.
[0012] Activate the puncture device, which is located on the top end cap of a one-time die-cast sealed compressed oxygen cylinder;
[0013] An oxygen supply device, located at the bottom of a resilient sealing cover, is configured to introduce compressed oxygen into the oxygen mask via a release line.
[0014] An alarm timing device, installed inside the protective mask, is configured to activate in response to the detection of oxygen release and record the oxygen release time.
[0015] The elastic sealing bottom cover has a circular opening and a sealing ring in the middle. The opening can be opened manually to allow the user's head to pass through. The sealing ring is set around the edge of the opening and forms an airtight interface when closed, fitting snugly against the neck.
[0016] Furthermore, the inner layer of the protective mask is made of a transparent sealing material, and the outer layer is made of a high-temperature resistant film material. This material has transparent properties in the area corresponding to the human face, while heat-reflective coatings are provided in other parts besides the area corresponding to the human face; the elastic sealing bottom cover is connected to the lower edge area of the protective mask.
[0017] Furthermore, the carbon dioxide absorption bag is fixed to the inner wall of the inner layer of the protective mask, and its position corresponds to the mouth and nose area of the human body; the carbon dioxide absorption bag is configured to effectively absorb the carbon dioxide gas exhaled by the escapee during the use of the mask, and its interior is filled with a functional material for carbon dioxide adsorption, wherein the functional material is lithium hydroxide or calcium hydroxide.
[0018] Furthermore, the activation puncture device includes an activation pull rope, a safety pin, a compression spring, and a puncture needle. The activation pull rope is connected to the safety pin, and the safety pin and the compression spring form an elastic engagement. One end of the compression spring abuts against the puncture needle, and the other end abuts against the inner top of the activation puncture device. The activation puncture device is configured such that when a force is applied to the activation pull rope, the safety pin disengages, and the compression spring releases its elastic potential energy to drive the puncture needle to puncture the sealing membrane of the top end cap of the compressed oxygen cylinder, thereby triggering the oxygen supply device to start releasing oxygen.
[0019] Furthermore, the oxygen supply device consists of two disposable die-cast sealed compressed oxygen cylinders and a release pipeline. The compressed oxygen cylinders are arranged in parallel or other predetermined arrangements. One end of the release pipeline is sealed to the outlet of the compressed oxygen cylinder, and the other end is configured to extend into the internal space of the oxygen mask through an elastic sealing bottom cover.
[0020] Furthermore, the alarm timing device includes a timing module and a reed switch. The reed switch is installed on the outer wall of the release pipe, and there is a permanent magnet slider inside the release pipe. When there is gas flow in the release pipe, it drives the permanent magnet slider to move, and the reed switch triggers a signal output to the timing module. The timing module is configured to start recording the usage time after receiving the signal, and issue a prompt message when the oxygen supply is close to a preset threshold to remind the escapee to pay attention to the remaining oxygen.
[0021] Compared with existing technologies, the escape oxygen mask respirator provided by this utility model uses a disposable die-cast sealed compressed oxygen cylinder as the oxygen source, which has good sealing performance and valve reliability; simply pulling the start cord will trigger the puncture device, thereby triggering the oxygen supply device to deliver oxygen into the oxygen mask; it adopts a cover-type head protection structure, which provides a wide field of vision and is comfortable to wear; it is easy to operate, and no professional training is required to wear the mask correctly, so children, the elderly or people with mobility impairments can quickly complete the wearing. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this specification 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 recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.
[0023] Fig. 1 Front view of an oxygen mask respirator for escape;
[0024] Fig. 2 This is a disposable die-cast sealed compressed oxygen cylinder, equipped with a puncture-initiating device and an alarm timing device;
[0025] Fig. 3 An illustration showing the effect of using an oxygen mask respirator for escape.
[0026] Figure label:
[0027] 1-Protective face mask; 2-Heat reflective coating of protective face mask; 3-Compressed oxygen cylinder; 4-Activation puncture device; 5-Carbon dioxide absorption bag; 6-Elastic sealing bottom cover; 7-Activation pull rope; 8-Safety pin; 9-Piercing needle; 10-Release pipeline; 11-Compression spring; 12-Compressed oxygen; 13-Alarm timing device circuit; 14-Timing module; 15-Reed switch. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0029] In the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.
[0030] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.
[0031] For descriptive purposes, this disclosure may use spatial relative terms such as “top,” “bottom,” “below,” “under,” “under,” “below,” “above,” “above,” “higher,” etc., which are relative to components, to describe the relationship between one component and another (other) component as shown in the accompanying drawings.
[0032] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values that would be recognized by one of ordinary skill in the art.
[0033] A specific embodiment of this utility model discloses an oxygen mask respirator for escape, which can be widely used for escape in fire or toxic gas environments.
[0034] like Figs. 1 to 3As shown, the escape oxygen mask respirator of this utility model includes the following components: a protective mask 1, an elastic sealing bottom cover 6, a carbon dioxide absorption bag 5, an activation puncture device 4, an oxygen supply device, and an alarm timing device. The protective mask has a double-layer structure, comprising an inner layer and an outer layer; the elastic sealing bottom cover 6 extends circumferentially along the protective mask 1 and is fixed to the lower edge area of the protective mask 1; the carbon dioxide absorption bag 5 is adhered to the inner wall of the protective mask 1; the activation puncture device 4 is sealed and fixed to the top end of a one-time die-cast compressed oxygen cylinder 3; the oxygen supply device is located at the bottom of the elastic sealing bottom cover 6 and is configured to introduce compressed oxygen 12 into the oxygen mask via a release line 10; the alarm timing device is installed inside the protective mask 1 and is configured to record the oxygen release time in response to the detected oxygen release activation operation.
[0035] In this embodiment, the inner layer of the protective mask 1 is made of a transparent sealing material; the outer layer is made of a high-temperature resistant film material, which has transparent properties in the area corresponding to the human face to ensure that the user has a clear field of vision. In other parts besides the area corresponding to the human face, a heat-reflective coating 2 is provided to improve the heat insulation performance of the mask; the elastic sealing bottom cover 6 extends along the circumferential direction of the lower edge area of the protective mask 1 and is fixed by adhesive.
[0036] In this embodiment, the elastic sealing bottom cover 6 has a circular opening and a sealing ring in the middle. The opening can be manually expanded to allow the user's head to pass through. The sealing ring is made of medical-grade elastic material and is integrally molded around the edge of the opening. When closed, it fits the neck to form an airtight interface.
[0037] In this embodiment, the carbon dioxide absorption bag 5 is adhesively fixed to the inner wall of the inner layer of the protective mask 1, and its position corresponds to the mouth and nose area of the human body. The carbon dioxide absorption bag 5 is configured to effectively absorb the carbon dioxide gas exhaled by the escapee during the use of the mask. Its interior is filled with a functional material for carbon dioxide adsorption, thereby maintaining a suitable gas composition in the breathing environment inside the mask. The absorbent in the carbon dioxide absorption bag 5 is preferably an alkaline absorbent material such as lithium hydroxide or calcium hydroxide.
[0038] In this embodiment, the puncture-initiating device 4 includes an activation pull cord 7, a safety pin 8, a compression spring 11, and a needle 9. The activation pull cord 7 is connected to the safety pin 8; the safety pin 8 is positioned at a preset constraint position, forming an elastic engagement with the compression spring 11; the compression spring 11 is in a pre-compressed state, with one end abutting against the needle 9 and the other end abutting against the inner top of the puncture-initiating device 4; the needle 9 has a piercing end for puncturing the sealing membrane of the compressed oxygen cylinder 3. The puncture-initiating device is configured such that when a force is applied to the activation pull cord 7, the safety pin 8 disengages from its original constraint position, and subsequently, the compressed spring 11 releases its elastic potential energy, thereby driving the needle 9 to puncture the sealing membrane of the top end of the compressed oxygen cylinder 3, thus triggering the oxygen supply device to begin releasing compressed oxygen 12.
[0039] In this embodiment, the oxygen supply device consists of two disposable die-cast sealed compressed oxygen cylinders 3 and a release pipeline 10. The compressed oxygen cylinders 3 are fixed to the bottom of the elastic sealing base 6 in a parallel or other predetermined arrangement; one end of the release pipeline 10 is sealed to the outlet of the compressed oxygen cylinder 3, and the release port at the other end extends through the elastic sealing base 6 into the oxygen mask, so as to realize the directional transmission of compressed oxygen 12 from the compressed oxygen cylinders 3 to the oxygen mask.
[0040] In this embodiment, the alarm timing device includes a timing module 14 and a reed switch 15. The reed switch 15 is fixedly installed on the outer wall of the release pipe 10. A permanent magnet slider is located inside the release pipe 10. When gas flows in the release pipe 10, it drives the permanent magnet slider to move, triggering the reed switch 15 to output a signal. This signal is transmitted to the timing module 14 via the alarm timing device circuit 13. Upon receiving the signal, the timing module 14 begins to accurately record the time it takes for the oxygen self-compressing cylinder 3 to flow from the release pipe 10 to the oxygen mask. When the oxygen supply approaches a preset threshold of depletion, the alarm timing device issues a warning message through its built-in prompting unit to remind escapees to pay attention to the remaining oxygen levels.
[0041] Compared with existing technologies, the escape oxygen mask respirator provided in this embodiment does not generate excessive heat and will not cause the device to overheat compared with traditional self-rescue respirators; it does not release toxic gases such as chlorine (Cl2) and carbon monoxide (CO), and does not require secondary purification through a filter layer; it uses a disposable die-cast sealed compressed oxygen cylinder, which does not require releasing oxygen through a pressure reducing valve, does not require regular pressure testing of the oxygen cylinder, has lower maintenance costs, and will not leak due to material aging during long-term storage; the disposable die-cast sealed compressed oxygen cylinder is lightweight and easy to carry, and does not affect the escape speed; it is easy to operate, and no professional training is required to wear the mask correctly.
[0042] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. An escape oxygen mask respirator, characterized in that, include: The protective face shield is configured with a double-layer structure, consisting of an inner layer and an outer layer; An elastic sealing base extends circumferentially along the protective face shield and is fixed to the lower edge area of the protective face shield; Carbon dioxide absorption bags are placed on the inner wall of the inner layer of the protective mask and are configured to absorb carbon dioxide gas exhaled by the escapee during the use of the mask. Activate the puncture device, which is located on the top end cap of a one-time die-cast sealed compressed oxygen cylinder; An oxygen supply device, located at the bottom of a resilient sealing cover, is configured to introduce compressed oxygen into the oxygen mask via a release line. An alarm timing device, installed inside the protective mask, is configured to activate in response to the detection of oxygen release and record the oxygen release time. The elastic sealing bottom cover has a circular opening and a sealing ring in the middle. The opening can be manually expanded to allow the user's head to pass through. The sealing ring is set around the edge of the opening and forms an airtight interface when closed, fitting snugly against the neck.
2. The escape oxygen mask respirator according to claim 1, characterized in that, The inner layer of the protective mask is made of a transparent sealing material; the outer layer is made of a high-temperature resistant film material, which is transparent in the area corresponding to the human face, while the other parts are provided with a heat-reflective coating; the elastic sealing bottom cover is connected to the lower edge area of the protective mask.
3. The escape oxygen mask respirator according to claim 1, characterized in that, The carbon dioxide absorption bag is fixed to the inner wall of the inner layer of the protective mask. The carbon dioxide absorption bag is configured to effectively absorb the carbon dioxide gas exhaled by the escapee during the use of the mask. Its interior is filled with a functional material for carbon dioxide adsorption, namely lithium hydroxide or calcium hydroxide.
4. The escape oxygen mask respirator according to claim 1, characterized in that, The activation puncture device includes an activation pull rope, a safety pin, a compression spring, and a puncture needle. The activation pull rope is connected to the safety pin, and the safety pin and the puncture needle are in a constrained engagement state. One end of the compression spring abuts against the puncture needle, and the other end abuts against the top inner side of the activation puncture device. The activation puncture device is configured such that when a force is applied to the activation pull rope, the safety pin disengages, and the compression spring drives the puncture needle to puncture the sealing diaphragm of the top end cap of the compressed oxygen cylinder, thereby triggering the oxygen supply device to start releasing oxygen.
5. The escape oxygen mask respirator according to claim 4, characterized in that, The oxygen supply device consists of two disposable die-cast sealed compressed oxygen cylinders and a release pipeline. The compressed oxygen cylinders are arranged in parallel or other predetermined arrangements. One end of the release pipeline is sealed to the outlet of the compressed oxygen cylinder, and the other end is configured to extend into the internal space of the oxygen mask through an elastic sealing bottom cover.
6. The escape oxygen mask respirator according to claim 1, characterized in that, The alarm timing device includes a timing module and a reed switch. The reed switch is installed on the outer wall of the release pipeline. When there is gas flow in the release pipeline, the reed switch triggers a signal output to the timing module. The timing module is configured to start recording the usage time after receiving the signal and issue a prompt message when the oxygen supply is close to a preset threshold.