Water-cooled chemical oxygen respirator

Abstract

This utility model relates to the field of respiratory protection equipment technology, specifically to a water-cooled student oxygen respirator. The device includes a mask, an inlet pipe, an oxygen tank, an outlet pipe, a delivery pipe, and a cooling pipe. One end of the inlet pipe is connected to the mask, and the other end is connected to the top of the oxygen tank. One end of the outlet pipe is connected to the bottom of the oxygen tank, and the other end is connected to the outlet pipe. The inlet and outlet pipes are connected to the two ends of the delivery pipe, respectively. The cooling pipe is connected to the inlet and outlet pipes, respectively. The delivery pipe is built into the cooling pipe, which contains coolant. An inhalation check valve is built into the end of the delivery pipe near the inlet pipe, and an exhalation check valve is built into the end of the inlet pipe near the oxygen tank. The cooling pipe is small in size and distributes the force more evenly, effectively reducing the pulling force on the mask and improving wearing comfort. The cooling pipe can exchange heat with the external environment, significantly extending the service life of the coolant and maintaining the oxygen temperature within a suitable range for a longer period.

Description

Technical Field

[0001] This utility model relates to the field of respiratory protection equipment technology, specifically to a water-cooled chemical oxygen respirator for students. Background Technology

[0002] Chemical oxygen respirators typically consist of a mask and an oxygen tank. Exhaled carbon dioxide is released through the mask and its tubing into the oxygen tank, where it reacts with an oxygen-generating agent to produce oxygen. This oxygen then flows back into the mask for respiration. Compared to high-pressure oxygen cylinders, chemical oxygen respirators effectively avoid the risks associated with high-pressure, high-concentration oxygen.

[0003] A patent with publication number CN222400045U discloses a high-efficiency oxygen-generating and anti-stagnant chemical oxygen fire-fighting self-rescue respirator with a cooling layer, including a breathing mask, an oxygen-generating tank, an air bag, and a water bag. The breathing mask is located at the top of the air bag. An annular cooling plate with a hollow structure is fixed to the outer wall of the oxygen-generating tank. The water bag is located at the bottom of the air bag. Water pipes are fixed to both sides of the bottom of the annular cooling plate. The ends of the two water pipes away from the annular cooling plate are connected to the water bag, and the pipe walls of the two water pipes are respectively equipped with a first liquid check valve and a second liquid check valve. This patent places the water bag at the bottom of the air bag. Because the water bag is relatively heavy, it will pull on the air bag and breathing mask, making it inconvenient to wear. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a water-cooled chemical student oxygen respirator, which solves the technical problem that the water bladder of the existing chemical student oxygen respirator is too heavy, resulting in poor wearing convenience.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the water-cooled student oxygen respirator of this utility model includes a mask, an air inlet pipe, an oxygen generation tank, an air outlet pipe, a delivery pipe, and a cooling pipe.

[0008] One end of the air inlet pipe is connected to the mask, and the other end is connected to the top of the oxygen generation tank; one end of the air outlet pipe is connected to the bottom of the oxygen generation tank, and the other end is connected to the air outlet pipe; the air inlet pipe and the air outlet pipe are connected to the two ends of the delivery pipe respectively.

[0009] The cooling pipe is connected to the air inlet pipe and the air outlet pipe respectively; the delivery pipe is built into the cooling pipe; the cooling pipe contains coolant;

[0010] The delivery pipe has an inhalation check valve built into one end near the air inlet pipe; the air inlet pipe has an exhalation check valve built into one end near the oxygen generator.

[0011] Optionally, the oxygen-generating chamber includes a chamber body, an oxygen-generating agent, and a pair of baffles;

[0012] The housing contains a pair of parallel baffles; the oxygen generator is disposed inside the pair of baffles.

[0013] The inner wall of the housing corresponds to the outer side of the pair of baffles, forming a first cavity and a second cavity; the first cavity is connected to the air inlet pipe; the second cavity is connected to the air outlet pipe.

[0014] Optionally, the cooling pipe includes a connecting section and a flexible expansion section that are connected to each other;

[0015] The connecting section is connected to the air inlet pipe and the air outlet pipe respectively;

[0016] A pair of the soft expansion sections are arranged one-to-one on both sides of the oxygen generation box; the soft expansion sections can be squeezed or automatically reset.

[0017] Optionally, the enclosure is a heat-conducting enclosure;

[0018] The soft expansion section abuts against the side panel of the box.

[0019] Optionally, the cooling pipe further includes branch pipes;

[0020] The branch pipe is located on the top surface of the baffle near the air intake pipe; the two ends of the branch pipe are connected to a pair of soft expansion sections in a corresponding manner.

[0021] Optionally, the branch pipe is a coil;

[0022] The coil is arranged in an S-shape on the baffle.

[0023] Optionally, the coil is embedded in the top plate of the housing.

[0024] Optionally, the baffle is a first heat dissipation plate.

[0025] Optionally, the oxygen generation chamber also includes multiple second heat dissipation plates;

[0026] Multiple second heat dissipation plates are arranged in parallel between a pair of heat dissipation plates; the two sides of the second heat dissipation plates are connected to the inner wall of the box body one by one.

[0027] (III) Beneficial Effects

[0028] The beneficial effects of this utility model are:

[0029] The inhalation and exhalation one-way valves create a unidirectional fluid flow path, ensuring that the fluid within the water-cooled student oxygen respirator flows only in one direction, preventing cross-contamination and effectively improving carbon dioxide absorption efficiency and oxygen production efficiency, thus enhancing product reliability. Simultaneously, the inhalation and exhalation one-way valves optimize the airbag structure, directly using the oxygen generator as a fluid storage chamber, further improving wearing convenience and comfort.

[0030] By embedding the delivery tube within the cooling tube, compared to placing the water bladder at the bottom of the air bladder, the cooling tube is smaller in size and distributes the force more evenly, effectively reducing the pulling force on the mask and improving wearing comfort. Furthermore, the cooling tube can exchange heat with the external environment, and since the external temperature is typically lower than the internal temperature of water-cooled chemical student oxygen respirators, this significantly extends the coolant's lifespan, thus maintaining the oxygen temperature within a suitable range for a longer period. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the water-cooled student oxygen respirator in the first embodiment;

[0032] Figure 2 A schematic diagram showing the connection of the delivery pipe, inlet pipe, and outlet pipe;

[0033] Figure 3 This is a schematic diagram of the cooling pipe structure;

[0034] Figure 4 This is a schematic diagram of the water-cooled chemical oxygen respirator in the second embodiment;

[0035] Figure 5 This is a schematic diagram of the water-cooled student oxygen respirator in the third embodiment;

[0036] Figure 6 This is a schematic diagram of the water-cooled student oxygen respirator in the fourth embodiment;

[0037] Figure 7 This is a schematic diagram of the connection between the coil and the housing in the fourth embodiment.

[0038] [Explanation of Labels in the Attached Image]

[0039] 1: Face mask;

[0040] 2: Intake pipe;

[0041] 3: Oxygen generating chamber; 31: Chamber body; 311: First cavity; 312: Second cavity; 313: Vent; 32: Oxygen generating agent; 33: Baffle; 34: Second heat dissipation plate;

[0042] 4: Air outlet pipe;

[0043] 5: Delivery pipe;

[0044] 6: Cooling pipe; 61: Connecting section; 62: Flexible expansion section; 63: Branch pipe; 64: Sealing ring;

[0045] 7: Intake check valve;

[0046] 8: Exhalation check valve. Detailed Implementation

[0047] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] See Figure 1This utility model provides a water-cooled student oxygen respirator, which includes a mask 1, an inlet pipe 2, an oxygen tank 3, an outlet pipe 4, a delivery pipe 5, and a cooling pipe 6. One end of the inlet pipe 2 is connected to the mask 1, and the other end is connected to the top of the oxygen tank 3. One end of the outlet pipe 4 is connected to the bottom of the oxygen tank 3, and the other end is connected to the outlet pipe 4. The inlet pipe 2 and the outlet pipe 4 are connected to the two ends of the delivery pipe 5 respectively. The cooling pipe 6 is connected to the inlet pipe 2 and the outlet pipe 4 respectively. The delivery pipe 5 is built into the cooling pipe 6. The cooling pipe 6 contains coolant. An inhalation one-way valve 7 is built into the end of the delivery pipe 5 near the inlet pipe 2. An exhalation one-way valve 8 is built into the end of the inlet pipe 2 near the oxygen tank 3.

[0052] The mask 1 is a headband-style mask. The oxygen tank 3, delivery tube 5, and cooling tube 6 can be attached to or worn on the chest. The delivery tube 5 is used to circulate carbon dioxide, water vapor, and oxygen. The coolant in the cooling tube 6 can be clean water, which cools the delivery tube 5, thereby lowering the temperature of the oxygen inhaled by the body and improving the comfort of using the product. Carbon dioxide and water vapor can enter the oxygen tank 3 through the inlet tube 2. The water vapor is absorbed by the oxygen tank 3, and the carbon dioxide reacts with the oxygen tank 3 to produce oxygen. The oxygen flows back to the inlet tube 2 through the delivery tube 5 for the body to absorb. The inhalation one-way valve 7 and the exhalation one-way valve 8 can create a one-way fluid passage, ensuring that the fluid in the water-cooled student oxygen respirator can only flow in one direction, preventing air leakage and effectively improving the absorption efficiency of carbon dioxide and the production efficiency of oxygen, thus improving the reliability of the product. At the same time, the inhalation one-way valve 7 and the exhalation one-way valve 8 can optimize the airbag structure, directly using the oxygen tank 3 as a fluid storage chamber, further improving the convenience and comfort of wearing the device.

[0053] like Figure 2 As shown, in this embodiment, a pair of delivery pipes 5 are symmetrically arranged on both sides of the inlet pipe 2 and the outlet pipe 4. The top end of the inlet pipe 2 and the delivery pipe 5 are connected in a cross shape, and the bottom end of the outlet pipe 4 and the delivery pipe 5 are connected in a T shape. The addition of a delivery pipe 5 (the cooling pipe 6 and the intake one-way valve 7 are added accordingly) effectively increases the volume of coolant, so that the water-cooled chemical student oxygen respirator can control the oxygen temperature within a suitable temperature range for a longer period of time.

[0054] like Figure 3 As shown, cooling pipe 6 corresponds to Figure 2The conveying pipe 5 shown is designed with an annular or frame-shaped structure. A sealing ring 64 is provided at the joint between the wall of the cooling pipe 6 and the inlet pipe 2 (or outlet pipe 4) to seal the fluid inside the cooling pipe 6 and prevent it from communicating with the outside. The cooling pipe 6 and the conveying pipe 5 can be formed by bonding (flexible hose) or welding (rigid pipe) multiple pipe sections. This is based on the application of chemical oxygen respirators in non-high-pressure working environments, that is, the pressure resistance requirements of the cooling pipe 6 and the conveying pipe 5 are relatively low, and it is sufficient to ensure the sealing performance after the cooling pipe 6 and the conveying pipe 5 are connected.

[0055] By embedding the delivery pipe 5 within the cooling pipe 6, compared to placing the water bladder at the bottom of the air bladder, the cooling pipe 6 is smaller in size and distributes the force more evenly, effectively reducing the pulling force on the face mask 1 and improving wearing comfort. Furthermore, the cooling pipe 6 can exchange heat with the external environment, and since the external temperature is typically lower than the internal temperature of a water-cooled chemical oxygen respirator, this significantly extends the coolant's lifespan, thus maintaining the oxygen temperature within a suitable range for a longer period. Simultaneously, the oxygen tank 3 itself can also directly exchange heat with the external environment.

[0056] First embodiment:

[0057] See you again Figure 1 The oxygen generator 3 includes a housing 31, an oxygen-generating agent 32, and a pair of baffles 33. The housing 31 contains a pair of parallel baffles 33. The oxygen-generating agent 32 is disposed inside the pair of baffles 33. The inner wall of the housing 31 and the outer walls of the pair of baffles 33 form a first cavity 311 and a second cavity 312. The first cavity 311 is connected to the inlet pipe 2; the second cavity 312 is connected to the outlet pipe 4. Specifically, the oxygen-generating agent 32 is an existing oxygen-generating agent, optionally oxygen-generating granules, which can vibrate during human movement to prevent the granules from sticking together, thus ensuring the reaction efficiency of the oxygen-generating agent 32. The baffles 33 are used to contain the oxygen-generating agent 3, preventing it from entering the inlet pipe 2, the outlet pipe 4, and the delivery pipe 5. Meanwhile, the baffle 33 and the inner wall of the box 31 form a cavity, namely the first cavity 311 and the second cavity 312. The cavity can increase the gas storage capacity, mainly to ensure the storage capacity and concentration of oxygen, and improve the safety of product use.

[0058] Second embodiment:

[0059] like Figure 4As shown, the cooling pipe 6 includes a connecting section 61 and a flexible expansion section 62 connected to each other; the connecting section 61 is connected to the inlet pipe 2 and the outlet pipe 4 respectively; a pair of flexible expansion sections 62 are arranged one-to-one on both sides of the oxygen generation box 3; the flexible expansion sections 62 can be squeezed or automatically reset. Based on the first embodiment, a part of the cooling pipe 6 is set as a flexible expansion section 62. The flexible expansion section 62 can be a metal-based composite or an elastic thermally conductive silicone, etc., which have both heat dissipation and elasticity. The connecting section 61 can also be a workpiece with good heat dissipation performance to improve the heat dissipation performance of the cooling pipe 6. In this embodiment, the flexible expansion section 62 is spherical.

[0060] Because the carbon dioxide and water vapor exhaled by the human body concentrate in the upper middle part of the oxygen generator 3, this area has the highest temperature. After a period of use, the temperature here will be higher than the fluid temperature in other parts, causing users to experience a feeling of stuffiness. Therefore, when users experience this, they can manually press the flexible expansion section 62 to allow the coolant in the cooling pipe 6 to flow, evenly dissipating the coolant temperature and cooling the intake pipe 2, thus eliminating the user's stuffiness. Furthermore, while one flexible expansion section 62 is being pressed, the other flexible expansion section 62 expands, ensuring the fluidity of the coolant within the cooling pipe 6. The pair of flexible expansion sections 62 also further increases the volume of the cooling pipe 6, delaying the time it takes for the gas to heat up to the threshold temperature.

[0061] Third embodiment:

[0062] See Figure 5 The housing 31 is a heat-conducting housing; the flexible expansion section 62 abuts against the side plate of the housing 31. Specifically, the housing 31 can be made of materials with good thermal conductivity, such as copper or aluminum, to improve the heat exchange efficiency of the housing 31. Based on the second embodiment, the flexible expansion section 62 can abut against the side plate of the housing 31 in its natural state, thereby exchanging heat and dissipating the internal heat of the housing 31 in real time, further improving the cooling performance of the water-cooled student oxygen respirator.

[0063] Fourth embodiment:

[0064] like Figure 6 As shown, the cooling pipe 6 also includes a branch pipe 63; the branch pipe 63 is arranged on the top surface of the baffle 33 near the air intake pipe 2; both ends of the branch pipe 63 are connected to a pair of flexible expansion sections 62. In this embodiment, the flexible expansion section 62 is hemispherical, and the side of the cooling pipe 6 facing the side plate of the housing 31 is completely in contact with the side plate of the housing 31, further improving the heat exchange efficiency of the two.

[0065] Based on the third embodiment, the branch pipe 63 is horizontally inserted through both side plates of the housing 31, and the insertion point needs to be sealed. The branch pipe 63 directly exchanges heat with the top surface of the baffle 33, which on the one hand can delay the heat diffusion to the air inlet pipe 2 and reduce the frequency of pressing the soft expansion section 62; on the other hand, it can conduct the internal temperature of the housing 31 to the cooling pipe 6, thereby improving the cooling efficiency of the cooling pipe 6 for the housing 31.

[0066] See Figure 7 Branch pipe 63 is a coil; the coil is arranged in an S-shape on baffle 33. The coil can be tied and fixed to the vent 313 opened on the top plate of the housing 31. The coil increases the contact area between branch pipe 63 and baffle 33, improving heat exchange efficiency. Optionally, the coil is embedded in baffle 33 to further increase the contact area between the two.

[0067] Furthermore, the baffle 33 serves as the first heat dissipation plate. The first heat dissipation plate combines the function of containing the oxygen generator 32 with the function of heat exchange, further improving the heat exchange efficiency between the baffle 33 and the cooling pipe 6.

[0068] Secondly, the oxygen-generating chamber 3 also includes multiple second heat dissipation plates 34; these plates are arranged in parallel between a pair of first heat dissipation plates; the two sides of each second heat dissipation plate 34 are connected to the inner wall of the chamber 31. Specifically, the first and second heat dissipation plates 34 can be made of the same material. The first and second heat dissipation plates 34 enhance the heat dissipation performance of the oxygen-generating chamber 3 itself, and even out the internal temperature of the oxygen-generating chamber 3. When used in conjunction with the cooling pipe 6, the internal heat of the oxygen-generating chamber 3 can be transferred to the cooling pipe 6 while the oxygen-generating chamber 3 dissipates heat itself, achieving rapid cooling of the oxygen-generating chamber 3, with a faster cooling speed and a longer time to reach the temperature threshold.

[0069] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A water-cooled chemical oxygen respirator characterized by comprising: The water-cooled chemical oxygen respirator includes a mask (1), an air inlet pipe (2), an oxygen tank (3), an air outlet pipe (4), a delivery pipe (5), and a cooling pipe (6); One end of the air inlet pipe (2) is connected to the mask (1), and the other end is connected to the top of the oxygen-generating tank (3); one end of the air outlet pipe (4) is connected to the bottom of the oxygen-generating tank (3), and the other end is connected to the air outlet pipe (4); the air inlet pipe (2) and the air outlet pipe (4) are connected to the two ends of the delivery pipe (5) respectively. The cooling pipe (6) is connected to the air inlet pipe (2) and the air outlet pipe (4); the delivery pipe (5) is built into the cooling pipe (6); the cooling pipe (6) contains coolant. The delivery pipe (5) has an inhalation check valve (7) built into one end near the air inlet pipe (2); the air inlet pipe (2) has an exhalation check valve (8) built into one end near the oxygen generator (3).

2. The chemical oxygen breathing apparatus of claim 1, wherein The oxygen generating box (3) includes a box body (31), an oxygen generating agent (32), and a pair of baffles (33); The housing (31) has a pair of parallel baffles (33) inside; the oxygen generator (32) is disposed inside the pair of baffles (33); The inner wall of the box (31) is connected to the outer side of the pair of baffles (33) to form a first cavity (311) and a second cavity (312); the first cavity (311) is connected to the air inlet pipe (2); the second cavity (312) is connected to the air outlet pipe (4).

3. The chemical oxygen breathing apparatus of claim 2, wherein The cooling pipe (6) includes a connecting section (61) and a flexible expansion section (62) that are connected together; The connecting section (61) is connected to the air inlet pipe (2) and the air outlet pipe (4); A pair of the soft expansion sections (62) are arranged one-to-one on both sides of the oxygen generation box (3); the soft expansion sections (62) can be squeezed or automatically reset.

4. The chemical oxygen breathing apparatus of claim 3, wherein The enclosure (31) is a heat-conducting enclosure; The soft expansion section (62) abuts against the side plate of the box (31).

5. The chemical oxygen breathing apparatus of claim 4, wherein The cooling pipe (6) also includes a branch pipe (63); The branch pipe (63) is arranged on the top surface of the baffle (33) near the air intake pipe (2); the two ends of the branch pipe (63) are connected to a pair of soft expansion sections (62) respectively.

6. The chemical oxygen breathing apparatus of claim 5, wherein The branch pipe (63) is a coil; The coil is arranged in an S-shape on the baffle (33).

7. The chemical oxygen breathing apparatus of claim 6 wherein, The coil is embedded in the top plate of the housing (31).

8. The chemical oxygen breathing apparatus of claim 2, wherein The baffle (33) is the first heat dissipation plate.

9. The chemical oxygen breathing apparatus of claim 8, wherein The oxygen generation box (3) also includes multiple second heat dissipation plates (34); Multiple second heat dissipation plates (34) are arranged in parallel between a pair of first heat dissipation plates; the two sides of the second heat dissipation plates (34) are connected to the inner wall of the box (31) in a corresponding manner.

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