Emergency chemical oxygen self-rescue respirator

Abstract

The utility model relates to an emergency chemical oxygen self-rescue respirator, which comprises a face mask, a mask air inlet and a mask air outlet are arranged on the face mask; an air inlet and an air outlet are formed in the oxygen generation tank; a gas storage bag; wherein the mask air outlet of the mask is communicated with the air inlet of the oxygen generation tank, the air outlet of the oxygen generation tank is communicated with the interior of the air storage bag, and the interior of the air storage bag is communicated with the mask air inlet. The utility model has the beneficial effects that not only can the oxygen generating agent react more completely, but also the problems of resistance rise, high carbon dioxide concentration and insufficient protection time can be avoided, and the reciprocating gas volume can be designed according to the actual use effect while the circulating defect is avoided; the carbon dioxide concentration of the sucked gas can be reduced, meanwhile, the temperature of the sucked gas cannot be obviously increased, and the problem that the temperature of the sucked gas is too high in a reciprocating gas flowing mode is solved.

Description

Technical Field

[0001] The utility model relates to an individual respiratory protection device for emergency rescue and escape, in particular to an emergency chemical oxygen self-rescuer. Background Art

[0002] The chemical oxygen self-rescuer for escape is a must-have portable respiratory protection device to prevent poisoning or asphyxiation in case of fire or gas leakage. The general protection time is 20 - 30 minutes. When danger occurs, it can be carried with you to meet the breathing needs during escape. In the military field, it can be configured in submarines and ships for escape in case of fire.

[0003] The isolated chemical oxygen self-rescuer uses an oxygen generator mainly composed of potassium superoxide to react with the exhaled gas of the human body to produce oxygen for people to inhale, and has the advantages of small volume and being unaffected by the use environment. There are generally two existing ways for chemical oxygen self-rescuers. One is to adopt a one-way circulation gas flow direction, that is, the exhaled gas of the human body enters the oxygen generator tank unidirectionally through the face mask, and the gas after the reaction with the oxygen generator enters the air storage bag, and then returns to the face mask unidirectionally from the air storage bag for people to breathe. Another way is to adopt a reciprocating gas flow mode, that is, the exhaled gas enters the oxygen generator tank through the face mask for reaction and then enters the air storage bag, and then returns to the face mask through the oxygen generator tank again after reaction.

[0004] Due to the low utilization rate of the oxygen generator in this cyclic mode, the protection time is limited; there are also problems such as incomplete utilization of the oxygen generator, uneven oxygen release, and easy formation of cavities and dead corners in the oxygen generation layer, resulting in insufficient oxygen production, weakened carbon dioxide absorption capacity, and a relatively high carbon dioxide concentration in the inhaled gas. At the same time, since the water vapor directly reaches the bottom of the oxygen generator tank along with the exhaled air flow, it condenses here and causes caking at the bottom of the medicine layer, resulting in too large a breathing resistance and premature failure of the self-rescuer.

[0005] The reciprocating mode can avoid the above problems of insufficient reaction of the oxygen generator and relatively high carbon dioxide concentration, but since the gas after the secondary reaction directly enters the face mask, it will cause a relatively high inhalation temperature. Summary of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an emergency chemical oxygen self-rescuer to solve the above problems.

[0007] The technical solution of the utility model is realized as follows: An emergency chemical oxygen self-rescuer includes

[0008] a face mask, and a face mask air inlet and a face mask air outlet are provided on the face mask;

[0009] an oxygen generator tank, and an air inlet and an air outlet are provided on the oxygen generator tank;

[0010] Gas storage bag;

[0011] Wherein, the mask air outlet of the mask is communicated with the air inlet of the oxygen - generating canister, the air outlet of the oxygen - generating canister is communicated with the inside of the gas storage bag, and the inside of the gas storage bag is communicated with the mask air inlet.

[0012] By adopting the above - mentioned technical solution, when a person exhales, the exhaled gas enters the oxygen - generating canister through the mask air outlet of the mask. After reacting with the oxygen - generating agent in the oxygen - generating canister, oxygen is generated and enters the gas storage bag from the air outlet of the oxygen - generating canister. The gas storage bag is communicated with the mask air inlet of the mask. When a person inhales, the gas in the gas storage bag can return to the mask through the mask air inlet and the air outlet of the oxygen - generating canister via the mask air outlet for people to breathe. The present invention overcomes the defects of the cyclic gas flow mode and the reciprocating gas flow mode. Since only part of the gas returns to the mask after secondary reaction in the oxygen - generating canister, not only the reaction of the oxygen - generating agent is more complete, but also problems such as increased resistance, high carbon dioxide concentration, and insufficient protection time will not occur. It avoids the defects of the cyclic mode and can design the reciprocating gas volume according to the actual use effect. It can not only reduce the carbon dioxide concentration of the inhaled gas but also make the temperature of the inhaled gas not increase significantly, avoiding the problem of too high temperature of the inhaled gas in the reciprocating gas flow mode.

[0013] The utility model is further arranged such that: the gas flows bidirectionally between the mask air outlet and the oxygen - generating canister.

[0014] By adopting the above - mentioned technical solution, when inhaling, part of the gas in the gas storage bag returns to the mask through the mask air inlet, and another part of the gas passes through the oxygen - generating canister again and the gap between the exhalation one - way valve and the air inlet and returns to the mask through the mask air outlet, forming a compound gas flow direction to reduce the carbon dioxide concentration during inhalation.

[0015] The utility model is further arranged such that: it further includes:

[0016] An exhalation one - way valve, which is arranged in the air inlet of the oxygen - generating canister or in the mask air outlet or in the passage between the air inlet and the mask air outlet. The diameter of the exhalation one - way valve is smaller than the inner diameter of the air inlet, the inner diameter of the mask air outlet, and the inner diameter of the passage between the air inlet and the mask air outlet, and there is still a gap for gas flow between the exhalation one - way valve and the inner wall of the air inlet or the mask air outlet or the passage between the air inlet and the mask air outlet when the exhalation one - way valve is closed.

[0017] By adopting the above - mentioned technical solution, when exhaling, the exhalation one - way valve opens, and all the exhaled gas enters the oxygen - generating canister. When inhaling, part of the gas in the gas storage bag returns to the mask through the mask air inlet, and another part of the gas passes through the oxygen - generating canister again and the gap between the exhalation one - way valve and the air inlet and returns to the mask through the mask air outlet, forming a compound gas flow direction to reduce the carbon dioxide concentration during inhalation.

[0018] The present utility model is further configured as follows: It further includes:

[0019] An inhalation one-way valve, which is arranged at the mask air inlet, and is used to make the air flow only from the gas storage bag to the mask air inlet.

[0020] By adopting the above technical solution, during exhalation, the inhalation one-way valve closes, and during inhalation, the inhalation one-way valve opens, so that all the exhaled gas can pass through the oxygen generator tank and enter the gas storage bag, effectively avoiding the exhaled gas directly entering the gas storage bag.

[0021] The present utility model is further configured as follows: It further includes:

[0022] An intake hose, the two ends of which are respectively connected to the gas storage bag and the mask air inlet;

[0023] Among them, there are two mask air inlets and two intake hoses. The two mask air inlets are respectively arranged on both sides of the mask.

[0024] By adopting the above technical solution, during inhalation, the gas in the gas storage bag enters the mask air inlet through the intake hose, thereby realizing two-way intake.

[0025] The present utility model is further configured as follows: The gas storage bag wraps the air outlet of the oxygen generator tank and the mask air inlet.

[0026] By adopting the above technical solution, the gas blown out from the air outlet of the oxygen generator tank directly enters the gas storage bag, and at the same time, the gas in the gas storage bag is directly inhaled into the mask air inlet during inhalation, reducing the connection of the air guide pipe.

[0027] The present utility model is further configured as follows: The oxygen generator tank includes:

[0028] A tank body, which is arranged in a cylindrical shape, and the upper and lower ends of the tank body are both conical. The air inlet and the air outlet are respectively located at the centers of the upper and lower conical parts of the tank body;

[0029] An oxygen generating agent, which is arranged in the tank body;

[0030] A filter felt, which is horizontally arranged on the upper and lower sides of the oxygen generating agent;

[0031] A filter screen plate, which is horizontally arranged on the upper and lower sides of the oxygen generating agent;

[0032] Among them, the filter screen plate is arranged outside the filter felt.

[0033] By adopting the above technical solution, the exhaled gas enters the tank through the air inlet, reacts with the oxygen generating agent to produce oxygen, and is sent into the air storage bag through the air outlet. The filter felt and the filter screen plate can make the gas flow evenly, and at the same time prevent the oxygen generating agent particles and dust from entering the mask and the air storage bag through the air inlet and the air outlet.

[0034] The present utility model is further configured as: The oxygen generating tank further includes:

[0035] A cross-shaped mesh skeleton, the cross-shaped mesh skeleton is vertically placed in the tank, the cross-shaped mesh skeleton contacts the inner wall of the tank, the cross-shaped mesh skeleton divides the inside of the tank into four spaces, and the oxygen generating agent is placed in this space.

[0036] By adopting the above technical solution, the cross-shaped mesh skeleton can form a skeleton around the oxygen generating agent in the tank, making the oxygen generating agent not easily collapse, thus causing gas short circuit or increased resistance; at the same time, by contacting the inner wall of the tank through the cross-shaped mesh skeleton, the internal heat can be transferred to the outside of the oxygen generating tank through the bracket to reduce the temperature.

[0037] The present utility model is further configured as: The inner walls at the upper and lower ends of the tank are provided with diversion grooves connected to the air inlet or the air outlet, and the diversion grooves are radially arranged.

[0038] By adopting the above technical solution, the diversion grooves can make the gas flow more evenly after flowing into the oxygen generating tank through the air inlet and the air outlet, making the reaction of the oxygen generating agent more complete.

[0039] The present utility model is further configured as: A heat dissipation cover is sleeved outside the tank, the heat dissipation cover is in a hollow shape, there is a distance between the outer wall of the tank and the heat dissipation cover, and the heat dissipation cover is made of plastic material.

[0040] By adopting the above technical solution, the heat dissipation cover can not only dissipate the heat of the tank, but also prevent the oxygen generating tank from directly contacting the human body and causing burns.

[0041] The present utility model is further configured as: It further includes:

[0042] A pressure relief valve, the pressure relief valve is arranged on the air storage bag, and the pressure relief valve is opened when the pressure in the air storage bag is too high.

[0043] By adopting the above technical solution, the excessive generated gas is discharged from the air storage bag, and at the same time, the outside gas cannot enter the air storage bag. Description of the Drawings

[0044] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0045] Figure 1 It is a schematic structural diagram of Embodiment 1;

[0046] Figure 2 It is a front view of the internal structure of the oxygen - generating tank;

[0047] Figure 3 It is a top view of the internal structure of the oxygen - generating tank;

[0048] Figure 4 It is a schematic structural diagram of the internal flow - guiding groove of the oxygen - generating tank;

[0049] Figure 5 It is a schematic structural diagram of Embodiment 2. Detailed implementation manners

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0051] Embodiment 1:

[0052] As Figures 1-4 shown, the present invention discloses an emergency chemical oxygen self - rescue breathing apparatus, including,

[0053] a face mask 1, on which there are a face - mask air inlet 10 and a face - mask air outlet 11;

[0054] an oxygen - generating tank 2, on which there are an air inlet 20 and an air outlet 21;

[0055] a gas storage bag 3;

[0056] Among them, the face - mask air outlet 11 of the face mask 1 is communicated with the air inlet 20 of the oxygen - generating tank 2, the air outlet 21 of the oxygen - generating tank 2 is communicated with the inside of the gas storage bag 3, and the inside of the gas storage bag 3 is communicated with the face - mask air inlet 10.

[0057] By adopting the above technical solution, when a human body exhales, the exhaled gas enters the oxygen - generating tank 2 through the mask air - outlet 11 of the mask 1. After reacting with the oxygen - generating agent in the oxygen - generating tank 2, oxygen is generated and enters the gas storage bag 3 from the air - outlet 21 of the oxygen - generating tank 2. The gas storage bag 3 is communicated with the mask air - inlet 10 of the mask 1. When a human body inhales, the gas in the gas storage bag 3 can return to the mask 1 through the mask air - inlet 10 and the air - outlet 21 of the oxygen - generating tank 2 and back to the mask 1 through the mask air - outlet 11 for the person to breathe; The present invention overcomes the defects of the cyclic gas - flow mode and the reciprocating gas - flow mode. Since only part of the gas returns to the mask after secondary reaction in the oxygen - generating tank, not only the reaction of the oxygen - generating agent is more complete, but also problems such as increased resistance, high carbon - dioxide concentration, and insufficient protection time will not occur. While avoiding the defects of the cyclic mode, the reciprocating gas volume can be designed according to the actual use effect. It can not only reduce the carbon - dioxide concentration of the inhaled gas but also make the temperature of the inhaled gas not rise significantly, avoiding the problem of too high temperature of the inhaled gas in the reciprocating gas - flow mode.

[0058] In the embodiment of the present utility model, the gas flows bidirectionally between the mask air - outlet 11 and the oxygen - generating tank 2.

[0059] By adopting the above technical solution, when inhaling, part of the gas in the gas storage bag 3 returns to the mask 1 through the mask air - inlet 10, and another part of the gas returns to the mask through the mask air - outlet 11 again after passing through the oxygen - generating tank 2 and the gap between the exhalation one - way valve 26 and the air - inlet 20, forming a compound gas - flow direction and reducing the carbon - dioxide concentration during inhalation.

[0060] In the embodiment of the present utility model, it further includes:

[0061] An exhalation one - way valve 26, which is arranged in the air - inlet 20 of the oxygen - generating tank 2 or in the mask air - outlet 11 or in the passage between the air - inlet 20 and the mask air - outlet 11. The diameter of the exhalation one - way valve 26 is smaller than the inner diameter of the air - inlet 20, the inner diameter of the mask air - outlet 11, and the inner diameter of the passage between the air - inlet 20 and the mask air - outlet 11. And when the exhalation one - way valve 26 is closed, there is still a gap for gas flow between it and the inner wall of the air - inlet 20 or the mask air - outlet 11 or the passage between the air - inlet 20 and the mask air - outlet 11.

[0062] By adopting the above technical solution, when exhaling, the exhalation one - way valve 26 opens, and all the exhaled gas enters the oxygen - generating tank 2. When inhaling, part of the gas in the gas storage bag 3 returns to the mask 1 through the mask air - inlet 10, and another part of the gas returns to the mask through the mask air - outlet 11 again after passing through the oxygen - generating tank 2 and the gap between the exhalation one - way valve 26 and the air - inlet 20, forming a compound gas - flow direction and reducing the carbon - dioxide concentration during inhalation.

[0063] In the embodiment of the present utility model, it further includes:

[0064] An inhalation one - way valve 4, the inhalation one - way valve 4 is arranged at the mask air inlet 10, and the inhalation one - way valve 4 is used to make the air flow only from the gas storage bag 3 to the mask air inlet 10.

[0065] By adopting the above - mentioned technical solution, when exhaling, the inhalation one - way valve 4 closes, and when inhaling, the inhalation one - way valve 4 opens, so that all the exhaled gas can enter the gas storage bag 3 through the oxygen - generating canister 2, effectively avoiding the exhaled gas directly entering the gas storage bag 3.

[0066] In the embodiment of the present utility model, it further includes:

[0067] An intake hose 5, both ends of the intake hose 5 are respectively connected to the gas storage bag 3 and the mask air inlet 10;

[0068] Wherein, there are two mask air inlets 10 and intake hoses 5, and the two mask air inlets 10 are respectively arranged on both sides of the mask 1.

[0069] By adopting the above - mentioned technical solution, when inhaling, the gas in the gas storage bag 3 enters the mask air inlet 10 through the intake hose 5, thereby realizing two - way intake.

[0070] In the embodiment of the present utility model, the oxygen - generating canister 2 includes:

[0071] A can body 22, the can body 22 is arranged in a cylindrical shape, both the upper and lower ends of the can body 22 are conical, and the air inlet 20 and the air outlet 21 are respectively located at the centers of the upper and lower conical parts of the can body 22;

[0072] An oxygen - generating agent 23, the oxygen - generating agent 23 is arranged in the can body 22;

[0073] A filter felt 24, the filter felt 24 is horizontally arranged on the upper and lower sides of the oxygen - generating agent 23;

[0074] A filter mesh plate 25, the filter mesh plate 25 is horizontally arranged on the upper and lower sides of the oxygen - generating agent 23;

[0075] Wherein, the filter mesh plate 25 is arranged outside the filter felt 24.

[0076] By adopting the above - mentioned technical solution, the exhaled gas enters the can body 22 through the air inlet 20, thereby reacting with the oxygen - generating agent 23 to generate oxygen, and is sent to the gas storage bag 3 through the air outlet 21. The filter felt 24 and the filter mesh plate 25 can make the gas flow evenly, and at the same time prevent the oxygen - generating agent 23 particles and dust from entering the mask 1 and the gas storage bag 3 through the air inlet 20 and the air outlet 21.

[0077] In the embodiment of the present utility model, the oxygen - generating canister 2 further includes:

[0078] A cross-shaped mesh framework 200 is vertically placed inside the tank body 22. The cross-shaped mesh framework 200 contacts the inner wall of the tank body 22. The cross-shaped mesh framework 200 divides the inside of the tank body 22 into four spaces, and the oxygen generator 21 is placed in this space.

[0079] By adopting the above technical solution, the cross-shaped mesh framework 200 can form a framework around the oxygen generator 23 in the tank, making the oxygen generator 23 not easily collapse, thus causing gas short circuit or increased resistance. At the same time, by contacting the inner wall of the tank body 22 through the cross-shaped mesh framework 200, the internal heat can be transferred to the outside of the oxygen generating tank 2 through the bracket to reduce the temperature.

[0080] In the embodiment of the present invention, guide grooves 201 connected to the air inlet 20 or the air outlet 21 are provided on the inner walls at the upper and lower ends of the tank body 22, and the guide grooves 201 are arranged radially.

[0081] By adopting the above technical solution, the guide grooves 201 can make the gas more evenly distributed after flowing into the oxygen generating tank through the air inlet 20 and the air outlet 21, making the reaction of the oxygen generator more complete.

[0082] In the embodiment of the present invention, a heat dissipation cover is sleeved outside the tank body 22. The heat dissipation cover is provided in a hollow shape. There is a gap between the outer wall of the tank body 22 and the heat dissipation cover, and the heat dissipation cover is made of plastic material.

[0083] By adopting the above technical solution, the heat dissipation cover can not only dissipate the heat of the tank body 22, but also prevent the oxygen generating tank 2 from directly contacting the human body and causing scalding.

[0084] In the embodiment of the present invention, the oxygen generating tank 2 further includes:

[0085] An exhalation one-way valve 26 is provided at the center inside the air inlet 20 and has a diameter smaller than the inner diameter of the air inlet 20. When the exhalation one-way valve 26 is closed, there is still a gap between it and the inner wall of the air inlet 20.

[0086] By adopting the above technical solution, when exhaling, the exhalation one-way valve 26 opens, and all the exhaled gas enters the oxygen generating tank 2. When inhaling, a part of the gas in the gas storage bag 3 returns to the mask 1 through the mask air inlet 10, and another part of the gas passes through the oxygen generating tank 2 and the gap between the exhalation one-way valve 26 and the air inlet 20 and then returns to the mask through the mask air outlet 11, forming a compound gas flow direction to reduce the carbon dioxide concentration during inhalation.

[0087] In the embodiment of the present invention, it further includes:

[0088] A pressure relief valve 6 is provided on the gas storage bag 3, and the pressure relief valve 6 is opened when the pressure in the gas storage bag 3 is too high.

[0089] By adopting the above technical solution, the excessive generated gas is discharged from the gas storage bag 3, and at the same time, external gas cannot enter the gas storage bag 3.

[0090] Embodiment 2:

[0091] As Figure 5 shown, the present utility model discloses an emergency chemical oxygen self-rescue breathing apparatus, including

[0092] A face mask 1, with a face mask air inlet 10 and a face mask air outlet 11 provided on the face mask 1;

[0093] An oxygen generating canister 2, with an air inlet 20 and an air outlet 21 provided on the oxygen generating canister 2;

[0094] A gas storage bag 3;

[0095] Wherein, the face mask air outlet 11 of the face mask 1 is communicated with the air inlet 20 of the oxygen generating canister 2, the air outlet 21 of the oxygen generating canister 2 is communicated with the inside of the gas storage bag 3, and the inside of the gas storage bag 3 is communicated with the face mask air inlet 10.

[0096] By adopting the above technical solution, when a person exhales, the exhaled gas enters the oxygen generating canister 2 through the face mask air outlet 11 of the face mask 1. After reacting with the oxygen generating agent in the oxygen generating canister 2, oxygen is generated and enters the gas storage bag 3 from the air outlet 21 of the oxygen generating canister 2. The gas storage bag 3 is communicated with the face mask air inlet 10 of the face mask 1. When a person inhales, the gas in the gas storage bag 3 can return to the face mask 1 through the face mask air inlet 10 and the air outlet 21 of the oxygen generating canister 2 via the face mask air outlet 11 for the person to breathe; the present invention overcomes the defects of the cyclic gas flow mode and the reciprocating gas flow mode. Since only part of the gas returns to the face mask after secondary reaction in the oxygen generating canister, not only the reaction of the oxygen generating agent is more complete, but also problems such as increased resistance, high carbon dioxide concentration, and insufficient protection time will not occur. While avoiding the defects of the cyclic mode, the reciprocating gas volume can be designed according to the actual use effect. Not only can the carbon dioxide concentration of the inhaled gas be reduced, but also the temperature of the inhaled gas will not increase significantly, avoiding the problem of too high temperature of the inhaled gas in the reciprocating gas flow mode.

[0097] In the embodiment of the present utility model, the gas flows bidirectionally between the face mask air outlet 11 and the oxygen generating canister 2.

[0098] By adopting the above technical solution, during inhalation, part of the gas in the air storage bag 3 returns to the mask 1 through the mask air inlet 10, and another part of the gas passes through the oxygen generating canister 2 again and returns to the mask through the gap between the exhalation one-way valve 26 and the air inlet 20 through the mask air outlet 11, forming a compound gas flow direction to reduce the carbon dioxide concentration during inhalation.

[0099] In the embodiment of the present utility model, it further includes:

[0100] An exhalation one-way valve 26, the exhalation one-way valve 26 is arranged in the air inlet 20 of the oxygen generating canister 2 or in the mask air outlet 11 or in the passage between the air inlet 20 and the mask air outlet 11. The diameter of the exhalation one-way valve 26 is smaller than the inner diameter of the air inlet 20, the inner diameter of the mask air outlet 11, and the inner diameter of the passage between the air inlet 20 and the mask air outlet 11. And when the exhalation one-way valve 26 is closed, there is still a gap for gas flow between it and the inner wall of the air inlet 20 or the mask air outlet 11 or the passage between the air inlet 20 and the mask air outlet 11.

[0101] By adopting the above technical solution, during exhalation, the exhalation one-way valve 26 opens, and the exhaled gas all enters the oxygen generating canister 2. During inhalation, part of the gas in the air storage bag 3 returns to the mask 1 through the mask air inlet 10, and another part of the gas passes through the oxygen generating canister 2 again and returns to the mask through the gap between the exhalation one-way valve 26 and the air inlet 20 through the mask air outlet 11, forming a compound gas flow direction to reduce the carbon dioxide concentration during inhalation.

[0102] In the embodiment of the present utility model, it further includes:

[0103] An inhalation one-way valve 4, the inhalation one-way valve 4 is arranged at the mask air inlet 10, and the inhalation one-way valve 4 is used to make the air flow only from the air storage bag 3 to the mask air inlet 10.

[0104] By adopting the above technical solution, during exhalation, the inhalation one-way valve 4 closes, and during inhalation, the inhalation one-way valve 4 opens, so that the exhaled gas can all pass through the oxygen generating canister 2 and enter the air storage bag 3, effectively avoiding the exhaled gas directly entering the air storage bag 3.

[0105] In the embodiment of the present utility model, the air storage bag 3 wraps the air outlet of the oxygen generating canister 2 and the mask air inlet 10.

[0106] By adopting the above technical solution, the gas blown out from the air outlet of the oxygen generating canister 2 directly enters the air storage bag 3, and at the same time, the gas in the air storage bag 3 is directly inhaled into the mask air inlet 10 during inhalation, reducing the connection of the air ducts.

[0107] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An emergency chemical oxygen self-rescue respirator, characterized in that: include, A mask (1), wherein the mask (1) is provided with a mask air inlet (10) and a mask air outlet (11); An oxygen generating tank (2), wherein the oxygen generating tank (2) is provided with an air inlet (20) and an air outlet (21); Air storage bag (3); The mask air outlet (11) of the mask (1) is in communication with the air inlet (20) of the oxygen generating tank (2), the air outlet (21) of the oxygen generating tank (2) is in communication with the interior of the air storage bag (3), and the interior of the air storage bag (3) is in communication with the mask air inlet (10).

2. An emergency chemical oxygen self-rescue respirator according to claim 1, characterized in that: The gas flows bidirectionally between the mask air outlet (11) and the oxygen generating tank (2).

3. An emergency chemical oxygen self-rescue respirator according to claim 1, characterized in that: Also includes: An exhalation one-way valve (26), the exhalation one-way valve (26) being arranged in the air inlet (20) of the oxygen generating tank (2) or in the air outlet (11) of the mask or in the passage between the air inlet (20) and the air outlet (11) of the mask, the diameter of the exhalation one-way valve (26) being smaller than the inner diameter of the air inlet (20), the inner diameter of the air outlet (11) of the mask, and the inner diameter of the passage between the air inlet (20) and the air outlet (11) of the mask, and when the exhalation one-way valve (26) is closed, there is still a gap between the exhalation one-way valve (26) and the inner wall of the passage inside the air inlet (20) or inside the air outlet (11) of the mask or between the air inlet (20) and the air outlet (11) of the mask for gas flow.

4. An emergency chemical oxygen self-rescue respirator according to any one of claims 1 to 3, characterized in that: Also includes: An inhalation check valve (4), the inhalation check valve (4) being arranged at the air inlet (10) of the mask, and the inhalation check valve (4) being used to allow air flow to flow only from the air storage bag (3) to the air inlet (10) of the mask.

5. An emergency chemical oxygen self-rescue respirator according to any one of claims 1 to 3, characterized in that: Also includes: An air intake hose (5), wherein two ends of the air intake hose (5) are respectively connected to the air storage bag (3) and the mask air inlet (10); There are two mask air inlets (10) and two air inlet hoses (5), and the two mask air inlets (10) are respectively arranged on two sides of the mask (1).

6. An emergency chemical oxygen self-rescue respirator according to any one of claims 1 to 3, characterized in that: The air storage bag (3) wraps the air outlet of the oxygen generating tank (2) and the air inlet (10) of the mask.

7. An emergency chemical oxygen self-rescue respirator according to any one of claims 1 to 3, characterized in that: The oxygen generating tank (2) comprises: A tank body (22), wherein the tank body (22) is cylindrical, and the upper and lower ends of the tank body (22) are both configured as cones, and the air inlet (20) and the air outlet (21) are respectively located at the center of the cones at the upper and lower ends of the tank body (22); an oxygen generating agent (23), wherein the oxygen generating agent (23) is arranged in the tank body (22); A filter felt (24), wherein the filter felt (24) is horizontally arranged on the upper and lower sides of the oxygen generator (23); A filter screen plate (25), wherein the filter screen plate (25) is horizontally arranged on the upper and lower sides of the oxygen generating agent (23); Wherein, the filter screen plate (25) is arranged on the outside of the filter felt (24).

8. An emergency chemical oxygen self-rescue respirator according to claim 7, characterized in that: The oxygen generating tank (2) further comprises: A cross-net frame (200) is vertically placed in the tank body (22), the cross-net frame (200) is in contact with the inner wall of the tank body (22), and the cross-net frame (200) divides the tank body (22) into four spaces, and the oxygen generator (23) is placed in the space.

9. An emergency chemical oxygen self-rescue respirator according to claim 7, characterized in that: Guide grooves (201) connected to the air inlet (20) or the air outlet (21) are provided on the inner walls at the upper and lower ends of the tank body (22), and the guide grooves (201) are arranged radially.

10. An emergency chemical oxygen self-rescue respirator according to claim 7, characterized in that: The outer side of the tank body (22) is provided with a heat dissipation cover, the heat dissipation cover is arranged in a hollow shape, a distance is provided between the outer wall of the tank body (22) and the heat dissipation cover, and the heat dissipation cover is made of plastic material.

11. An emergency chemical oxygen self-rescue respirator according to any one of claims 1 to 3, characterized in that: Also includes: A pressure relief valve (6) is arranged on the air storage bag (3), and when the pressure in the air storage bag (3) is too high, the pressure relief valve (6) opens.

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