Portable rechargeable air-breathing apparatus having built-in multi-stage decompression structure for lifesaving and evacuation purposes

Abstract

The present invention relates to a portable rechargeable air-breathing apparatus having a built-in multi-stage decompression structure for lifesaving and evacuation purposes, and provides high-pressure charged air containing oxygen to patients in a fire evacuation situation or an emergency situation. Specifically, air is rapidly supplied using a decompression structure integrated in the apparatus without using a separate decompression structure, compressed air is charged via a charging port, and the high-pressure compressed air is decompressed over several stages. Consequently, the air is decompressed several times during a decompression period when ejected, and is also decompressed when discharged via an ejection path, and thus is discharged in a state that allows a user to breathe comfortably. Therefore, according to the present invention, high-pressure air is charged into a high-pressure vessel to achieve a compact size and portability, and is supplied to the user at a stable pressure via multi-stage decompression.

Description

Portable inflatable air breathing apparatus for rescue and evacuation purposes with a built-in multi-stage decompression structure

[0001] The present invention relates to a portable refillable air breathing apparatus for life-saving purposes with a built-in multi-stage pressure reduction structure. More specifically, it relates to a portable refillable air breathing apparatus for emergency rescue and evacuation purposes with a built-in stable air supply button structure and a multi-stage pressure reduction structure, which is easy for the user to carry and can stably provide oxygen-containing air by depressurizing air filled at high pressure in multiple stages to a patient who urgently requires oxygen in evacuation situations due to fire or other emergency situations.

[0002] Generally, if a person loses consciousness due to prolonged apnea or exposure to gas and smoke for about 5 minutes or longer, they will fall into severe hypoxia or hypoxemia, eventually leading to death.

[0003] Furthermore, since severe hypoxia or hypoxemia causes irreversible brain damage, it is of the utmost importance to rapidly increase the pressure and supply air to forcibly enter the lungs of patients who have stopped breathing or are in a state of severe hypoventilation or hypoxemia, as spontaneous breathing is difficult.

[0004] Furthermore, the majority of casualties resulting from accidents such as fires are caused not by fire but by suffocation from toxic gases.

[0005] According to statistics, more than 60% of fire-related deaths are caused by suffocation from gas and smoke, while only about 20% are caused by burns.

[0006] It was found that the survival rate decreases by 7–10% for every minute elapsed after a fire breaks out, dropping to 25% after 5 minutes and less than 5% after 10 minutes. Therefore, it is important to quickly escape the scene of a fire while avoiding the smoke.

[0007] In the current environment, where the proportion of apartments in residential settings has significantly increased and high-rise apartments are on the rise due to economic reasons, the majority of fatalities during evacuation in the early stages of a fire are caused by suffocation from gas and smoke. Consequently, portable personal air breathing apparatuses have become a necessary and effective evacuation item for early evacuation situations where the fire has not yet spread extensively.

[0008] Therefore, there is a need for an air breathing device designed to allow continuous breathing without inhaling smoke while evacuating during a fire, and it is urgent to supply breathing devices to private households that can rapidly recover from hypoxia in body tissues by supplying oxygen to people exposed to oxygen deficiency or suffocation from toxic gases due to fire, etc.

[0009] In addition, supplying oxygen immediately to athletes during or after sports that require severe physical strength helps them recover quickly to a normal physical condition, and supplying air containing oxygen helps them recover quickly while or after extinguishing a fire.

[0010] Accordingly, various emergency rescue breathing apparatuses have been developed for the purposes mentioned above, but most of them are bulky and can only be placed in specific locations, making them inconvenient to carry.

[0011] Furthermore, due to the problem of being unable to be refilled, requiring disposal after a single use or replacement of the container itself, there is an urgent need for a structure that is portable, can fill a large amount of air into a container of the same size, is recyclable, and can safely fill a small container with a large amount of oxygen—that is, high-pressure air.

[0012] The objective of the present invention is to supply air to a user at a pressure state that allows the user to breathe comfortably and safely by depressurizing high-pressure air in multiple stages.

[0013] Another objective is to provide a container that safely holds high-pressure air, to enable use even during evacuation, and to miniaturize the air breathing apparatus to make it convenient to use and easy for the user to carry.

[0014] An air breathing device for life rescue according to the present invention for solving the above-mentioned problem comprises: a cylindrical high-pressure container for storing air containing oxygen for breathing by filling it at high pressure; a bottom filling cover part assembled to the lower part of the high-pressure container, which seals the lower part with a cover to safely contain the high-pressure air filled inside the high-pressure container and fills the high-pressure air from the bottom into the high-pressure container; and an upper cap part assembled to the upper part of the high-pressure container.

[0015] The present invention is compact and easy to carry because it fills high-pressure air containing oxygen into a high-pressure-resistant container, and it is highly efficient as it reduces the high-pressure air through several stages to a stable pressure suitable for the user to breathe before supplying it to the user.

[0016] FIG. 1 is an exploded perspective view showing the overall configuration of a portable inflatable air breathing apparatus for life rescue purposes with a built-in multi-stage depressurization structure according to the first embodiment of the present invention.

[0017] FIG. 2 is a cross-sectional view showing the entire interior of a portable inflatable air breathing apparatus for life rescue purposes with a built-in multi-stage depressurization structure according to the first embodiment of the present invention,

[0018] FIG. 3 is a cross-sectional view showing a structure in which the entire interior and the interior and exterior are reinforced according to the first embodiment of the present invention,

[0019] FIG. 4 shows the entire interior according to the first embodiment of the present invention and a cross-sectional view with the lid closed,

[0020] FIG. 5 is a cross-sectional view in which the discharge amount control unit (50) according to the first embodiment of the present invention is not operated,

[0021] FIG. 6 is a cross-sectional view showing the path in which air is discharged in the direction of the arrow by pressing the nozzle member (120) by the discharge amount control unit (50) according to the first embodiment of the present invention.

[0022] FIG. 7 is a cross-sectional view showing the path in which air is discharged in the direction of the arrow when the discharge volume control unit (50) according to the first embodiment of the present invention is fully opened by pressing the nozzle member (120).

[0023] FIG. 8 is a cross-sectional view showing the internal configuration of the main pressure reduction unit (90) by the discharge volume control unit (50) pressing the nozzle member (120).

[0024] FIG. 9 is a cross-sectional view illustrating the first pressure reduction section of the main pressure reduction unit (90),

[0025] FIG. 10 is a cross-sectional view illustrating the second pressure reduction section of the main pressure reduction unit (90),

[0026] FIG. 11 is a cross-sectional view illustrating the third pressure reduction section of the main pressure reduction unit (90).

[0027] FIG. 12 is a cross-sectional view illustrating the fourth pressure reduction section of the main pressure reduction unit (90).

[0028] FIG. 13 is a cross-sectional view illustrating the fifth pressure reduction section of the main pressure reduction unit (90).

[0029] FIG. 14 is a cross-sectional view illustrating the sixth pressure reduction section of the main pressure reduction unit (90).

[0030] FIG. 15 is a cross-sectional view illustrating the discharge pressure reduction section 1 (470) and discharge pressure reduction section 2 (480) of the discharge pressure reduction section (80).

[0031] FIG. 16 is a cross-sectional view showing the internal structure of the bottom filling cover portion (60),

[0032] FIG. 17 is a cross-sectional view showing the flow of air filling through the bottom filling cover (60).

[0033] FIG. 18 is a cross-sectional view of a combined state illustrating an interlocking structure configured to withstand high internal pressure formed between a bottom filling cover part (60) and a high-pressure container (10).

[0034] FIG. 19 is a cross-sectional view of a combined state illustrating an interlocking structure configured to withstand high internal pressure formed between the bottom filling cover portion (60) and the upper cap portion (40).

[0035] FIG. 20 is an exploded perspective view showing the configuration of the upper discharge pressure reduction part (810) and the lower discharge pressure reduction part (830) of the discharge pressure reduction part (80) of the present invention.

[0036] FIG. 21 is an exploded perspective view showing the configuration of the discharge pressure reduction upper part (810) and the discharge pressure reduction lower part (830) of the discharge pressure reduction unit (80) of the present invention from a different perspective.

[0037] FIG. 22 is an exploded perspective view showing the overall configuration of a portable inflatable air breathing apparatus for evacuation purposes with a built-in multi-stage pressure reduction structure according to a second embodiment of the present invention.

[0038] FIG. 23d,s A cross-sectional view showing the entire interior of a portable inflatable air breathing apparatus for evacuation purposes with a built-in multi-stage depressurization structure according to a second embodiment of the present invention,

[0039] FIG. 24 A cross-sectional view showing a structure in which the entire interior and the interior and exterior are reinforced according to a second embodiment of the present invention,

[0040] FIG. 25 shows the entire interior according to the second embodiment of the present invention and a cross-sectional view with the lid closed,

[0041] FIG. 26 is a cross-sectional view in which the discharge amount control unit (50) according to the second embodiment of the present invention is not operated,

[0042] FIG. 27 is a cross-sectional view showing the path in which air is discharged in the direction of the arrow by pressing the nozzle member (120) by the discharge amount control unit (50) according to the second embodiment of the present invention.

[0043] FIG. 28 is a cross-sectional view showing the path in which air is discharged in the direction of an arrow when the discharge volume control unit (50) according to the second embodiment of the present invention is fully opened by pressing the nozzle member (120).

[0044] FIG. 29 is an exploded perspective view illustrating the combined state of a slide button (52) and a slide button cover part (30') according to a second embodiment of the present invention.

[0045] FIG. 30 is an exploded perspective view illustrating the combined state of another embodiment of a slide button (52) and a slide button cover part (30') according to a second embodiment of the present invention.

[0046] FIG. 31 is a perspective view illustrating the combined state of another embodiment of a slide button (52) and a slide button cover part (30') according to a second embodiment of the present invention.

[0047] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0048] The air breathing device according to the first embodiment of the present invention comprises a cylindrical high-pressure container (10), a bottom filling cover part (60), an upper cap part (40), a main pressure reduction part (90), a discharge pressure reduction part (80), a pressure display part (70), a discharge amount control part (50), a push button cover part (30), and a lid (31).

[0049] In addition, the air breathing device according to the second embodiment of the present invention is composed of a cylindrical high-pressure container (10), a bottom filling cover part (60), an upper cap part (40), a main pressure reduction part (90), a discharge pressure reduction part (80), a pressure display part (70), a discharge amount control part (50), a slide button cover part (30'), and a lid (31).

[0050] The bottom filling cover (60) is assembled at the bottom of the high-pressure container (10), and the bottom is sealed with a cover to safely contain high-pressure air filled inside the high-pressure container (10), and includes a configuration for filling high-pressure air containing oxygen at high pressure from the bottom into the high-pressure container (10).

[0051] The upper cap portion (40) is assembled on the upper part of the high-pressure container (10) and performs the role of sealing the upper part with the upper cap portion (40) to safely contain the high-pressure air filled inside the high-pressure container (10) and organically connecting it with other components.

[0052] Inside the upper cap portion (40), a main pressure reducing portion (90) and a discharge pressure reducing portion (80) are housed, and a pressure display portion (70) is coupled.

[0053] The main pressure reduction unit (90) reduces the pressure of the high-pressure air inside the high-pressure container (10) to a pressure that is within a range usable by the user, and the discharge pressure reduction unit (80) further reduces the pressure of the air discharged through the main pressure reduction unit (90) to a pressure suitable for the user to use, and the pressure display unit (70) displays the internal pressure (10ap) of the high-pressure container filled in the interior (10a) of the high-pressure container (10) to inform the user of how much extra air pressure remains, thereby helping the user make a judgment on the situation.

[0054] On the upper cap portion (40) and the upper discharge pressure reduction portion (80), a discharge amount control portion (50), a push button cover portion (30), and a lid (31) are formed.

[0055] The discharge volume control unit (50) according to the first embodiment of the present invention is configured such that when an operator presses a push button (512) with a finger to supply an appropriate amount of air, high-pressure air inside the high-pressure container (10) passes through a main pressure reduction unit (90), is reduced in pressure and discharged, and passes through a discharge pressure reduction unit (80) that is reduced in pressure again, and supplies air while adjusting the discharge volume in proportion to the operating displacement of the operator pressing the push button (512) with a finger. The push button cover unit (30) is configured to surround the push button (512) to protect the discharge volume control unit (50) and to support and guide the push button (512), and the lid (31) is configured to cover the push button cover unit (30) and to protect the discharge volume control unit (50) from contamination by foreign substances.

[0056] In addition, the discharge volume control unit (50) according to the second embodiment of the present invention is configured such that when an operator pushes a slide button (52) with a finger to supply an appropriate amount of air, the high-pressure air inside the high-pressure container (10) passes through a main pressure reduction unit (90), is reduced in pressure and discharged, and passes through a discharge pressure reduction unit (80) that is reduced in pressure again, and supplies air while adjusting the discharge volume in proportion to the operating displacement of the operator pushing the slide button (52) with a finger. The slide button cover unit (30') is configured to surround the slide button (52) to protect the discharge volume control unit (50) and to support and guide the slide button (52), and the lid (31) is configured to cover the slide button cover unit (30') and to protect the discharge volume control unit (50) from contamination by foreign substances.

[0057] In summary, the air breathing device for life rescue according to the present invention comprises: a cylindrical high-pressure container (10) for filling and storing air for breathing at high pressure; a bottom filling cover part (60) assembled at the bottom of the high-pressure container (10), which seals the bottom with a cover to safely contain the high-pressure air filled inside the high-pressure container (10), and for filling the high-pressure air from the bottom of the high-pressure container (10); and an upper cap part (40) assembled at the top of the high-pressure container (10). Inside the upper cap part (40), there is a main pressure reduction part (90) that reduces the pressure of the high-pressure air inside the high-pressure container (10) to a pressure within a range usable by the user in multiple stages, and a discharge pressure reduction part (80) that further reduces the pressure of the air discharged after being reduced through the main pressure reduction part (90) to a pressure suitable for the user to use. It is composed of a pressure display unit (70) that displays the internal pressure (10ap) of the high-pressure container filled in the interior (10a) of the high-pressure container (10), and on the upper cap unit (40) and the upper part of the discharge pressure reduction unit (80), when an operator presses a push button (512) with a finger to supply an appropriate amount of air, the high-pressure air inside the high-pressure container (10) passes through a main pressure reduction unit (90) to be reduced and discharged, and passes through a discharge pressure reduction unit (80) to be reduced again, and is configured to supply air while adjusting the discharge amount in proportion to the operating displacement of the operator pressing the push button (512) with a finger, a push button cover unit (30) configured to protect the discharge amount control unit (50) and support and guide the push button (512), and a cover unit (30) that covers the push button cover unit (30) and protects the discharge amount control unit (50) from contamination by foreign substances. It is characterized by including a lid (31).

[0058] To clarify the present invention and to explain the configurations necessary for the operation of the air breathing device, the upper cap portion (40) is characterized by including: a main pressure reduction unit (90) that reduces the pressure of the high-pressure air inside the high-pressure container (10) in multiple stages to a pressure within a range usable by the user; a discharge pressure reduction unit (80) that further reduces the pressure of the air discharged after being reduced through the main pressure reduction unit (90) to a pressure suitable for the user to use and discharge it; and a pressure display unit (70) that displays the internal pressure (10ap) of the high-pressure container filled in the interior (10a) of the high-pressure container (10).

[0059] The performance of an air breathing apparatus containing high-pressure oxygen can be judged by the capacity to be filled, the internal pressure capacity of the container capable of withstanding pressure, and whether it is equipped with the capability to stably supply high-pressure air at a pressure suitable for breathing by depressurizing it.

[0060] When depressurizing high-pressure air, increasing the depressurization ratio can lower the pressure, but it also reduces the airflow, which may result in an insufficient supply of the required amount of air. Therefore, to ensure a sufficient airflow while supplying air, it is desirable to depressurize gradually through multiple stages without reducing the airflow.

[0061] In the present invention, a discharge pressure reduction unit (80) is added to perform pressure reduction in order to more smoothly execute the pressure reduction action of the main pressure reduction unit (90) that performs multiple stages of pressure reduction, thereby supplying air at a more stable pressure for breathing.

[0062] With reference to FIG. 2, the present invention relates to a discharge pressure reduction unit (80) which is normally connected to an external space at a pressure equal to atmospheric pressure, and when high-pressure air is discharged while being pressed downward by the discharge pressure reduction unit (80) in which the nozzle head (126) of the nozzle member (120) belonging to the main pressure reduction unit (90) is in contact with the discharge amount control unit (50), the discharge pressure reduction unit (80) is a section where pressure reduction occurs again after passing through a section where the pressure reduction phenomenon of the main pressure reduction unit (90) occurs. The discharge pressure reduction unit (802) is installed in a circular installation space, which is the internal space of the upper cap unit (40), and the discharge pressure reduction upper piece (810) is connected to and linked with the tip (514) of the push block, which is the lower end of the discharge amount control unit (50), and the discharge pressure reduction upper piece (810) is installed in the discharge pressure reduction unit installation space (802), which is the internal space of the upper cap unit (40). It is characterized by being installed in contact with and connected to the upper surface (128) of the nozzle head of the main pressure reduction unit (90), and is connected to the external space at a pressure equal to atmospheric pressure, and then, when the slide button (52) is pressed, pressure reduction occurs in the main pressure reduction unit (90) and then pressure reduction is performed again, and the discharge pressure reduction 1 section (470) and discharge pressure reduction 2 section (480) are formed by the discharge pressure reduction upper section (810) and the discharge pressure reduction lower section (830).

[0063] In order to operate the air breathing device, the user adjusts the discharge volume control unit (50) to supply air containing oxygen for breathing. The discharge volume control unit (50) of the present invention is characterized by being composed of a push block (51), a slide button (52), a push block guide (53), and a slide button cover unit (30'), wherein the slide button (52) is adjusted back and forth to guide the push block guide (53) and the push block (51) is moved up and down to press the nozzle member (120) of the main pressure reducing member (100) up and down, thereby supplying air containing oxygen to the user through the air discharge hole (519).

[0064] The discharge volume control unit (50) of the present invention plays the role of increasing or decreasing the discharge volume of air as the discharge volume control unit (50) is displaced up and down, and the discharge pressure reduction unit (80) is normally connected to an external space at a pressure equal to atmospheric pressure, but when high-pressure air is discharged according to the up and down displacement of the discharge volume control unit (50), it passes through a section where a pressure reduction phenomenon occurs in the main pressure reduction unit (90) and then a section that generates pressure reduction again, so that air containing oxygen passes through the discharge pressure reduction unit (80) and the discharge volume control unit (50) and is supplied to the user through the air discharge hole (519).

[0065] With reference to FIG. 2, the airtightness of the upper part of the high-pressure container (10) is maintained by forming a female screw (14) on the upper part of the container on the upper inner surface of the high-pressure container (10) and coupling with a male screw (422) on the upper cap part (40), and above where the male screw (422) on the upper cap part is formed, an upper sealing ring (15a) of the upper cap container is fitted into the upper sealing ring groove (15ah) of the upper cap part (40), which is an outer groove of the upper cap part (40), and below where the male screw (422) on the upper cap part is formed, an upper sealing ring (15b) of the upper cap container is fitted into the lower sealing ring groove (15bh) of the upper cap part (40), which is an outer groove of the upper cap part (40), thereby maintaining airtightness. The airtightness of the lower part of the high-pressure container (10) is maintained by forming a female screw (15) on the lower part of the container on the lower inner surface of the high-pressure container (10) and coupling with the outer surface of the bottom filling cover part (60). The bottom filling cover is coupled with the bottom filling cover coupling screw (604), and the container bottom upper sealing ring (15c) is fitted into the container bottom upper sealing ring groove (15ch), which is the outer groove of the bottom filling cover part (60), above where the bottom cover coupling screw (604) is formed, and the container bottom lower sealing ring (15d) is fitted into the container bottom lower sealing ring groove (15dh), which is the outer groove of the bottom filling cover part (60), below where the bottom cover coupling screw (604) is formed, thereby maintaining airtightness.

[0066] The reinforcing means of the high-pressure vessel (10) is formed by contacting the inner wall surface of the inner central part so as to protrude towards the center, and is configured to protrude in a circular shape into the interior of the high-pressure vessel (10) to prevent shape deformation such as swelling of the central part of the high-pressure vessel (10) due to the internal pressure of the air filled with high pressure. It is configured with one reinforcing flange (12) or multiple reinforcing flanges as the pressure of the air filled with high pressure increases, thereby reinforcing the high-pressure vessel (10) to respond to the increasing pressure and improving durability. It is also characterized by being configured by cutting and processing a homogeneous material in the shape of a metal rod to withstand high-pressure air pressure.

[0067] On the upper inner surface of the above high-pressure container (10), a female screw (14) is formed and coupled with a male screw (422) formed on the upper cap part (40). Above the upper cap part male screw (422), an upper sealing ring (15a) of the upper cap container is fitted into the upper sealing ring groove (482) of the upper cap container, which is the outer groove of the upper cap part (40). Below the upper cap part male screw (422), a lower sealing ring (15b) of the upper cap container is fitted into the lower sealing ring groove (484) of the upper cap container, which is the outer groove of the upper cap part (40), thereby maintaining airtightness.

[0068] A lower female screw (16) is formed on the lower inner surface of the above-mentioned high-pressure container (10) and is coupled with a bottom filling cover coupling screw (604) formed on the outer surface of the bottom filling cover part (60). Above the bottom cover coupling screw (604), a container bottom upper sealing ring (15c) is fitted into the container bottom upper sealing ring groove (602), which is the outer groove of the bottom filling cover part (60), and below the bottom cover coupling screw (604), a container bottom lower sealing ring (15d) is fitted into the container bottom lower sealing ring groove (606), which is the outer groove of the bottom filling cover part (60), thereby maintaining airtightness.

[0069] Even when the air breathing device of the present invention is heated by flames at a fire scene, the O-rings incorporated and coupled within the high-pressure container (10), such as the upper cap container upper sealing ring (15a), upper cap container lower sealing ring (15b), container bottom upper sealing ring (15c), and container bottom lower sealing ring (15d), do not melt due to the heat, causing the internal high-pressure air to leak out through the screw threads and thus preventing the high-pressure container (10) from exploding.

[0070] The pressure of the compressed air used in the high-pressure container in the present invention is 250 to 300 ba, and the compressed air is injected into the container and stored at a pressure 250 to 300 times that of atmospheric pressure. Therefore, the high-pressure container (10) must be structured to be safe despite external influences such as external shock or temperature rise, and pressures 250 to 300 times higher.

[0071] In order to withstand the internal pressure of a cylindrical high-pressure vessel (10), first, a rod-shaped metal with a homogeneous material was machined using a CNC machine, and second, a donut-shaped reinforcing flange (12) with a hollow center was formed in the center of the high-pressure vessel (10) by machining the part that contacts the inner wall surface into a curved shape so as to withstand the stress of the internal pressure, thereby preventing the center from swelling due to internal pressure.

[0072] With these measures, a high-pressure vessel (10) capable of withstanding pressures up to approximately 650 ba, which is the maximum pressure that can be tested in a safety test, can be obtained, and a method of installing multiple donut-shaped reinforcing flanges (12) inside to withstand higher pressures can be adopted, and by adding multiple reinforcings on the outside of the high-pressure vessel (10) in a shape similar to the reinforcing flanges, a safe high-pressure vessel (10) capable of withstanding pressures of 600 to 1000 atmospheres can be provided.

[0073] With this high-pressure container (10), high-pressure air containing oxygen can be injected, so the size of the air breathing device can be reduced relative to the amount of air required, thereby providing a portable air breathing device that is lightweight, safe, and has an increased usage time.

[0074] In order to reinforce the above high-pressure container (10), there is a method of reinforcing the inside of the container and reinforcing the outside of the container. Reinforcing the outside of the container can be done by forming a thick outer thickness in parts that may be weak so that the container can withstand high-pressure air.

[0075] The part to be reinforced is formed by creating an external reinforcing projection (13) on the outside of the part that has been thinned by cutting the inside to form the upper female screw (14) and lower female screw (16) of the high-pressure container (10), thereby leaving a residual thickness when cutting the high-pressure container (10).

[0076] In the present invention, multiple external reinforcing protrusions (13) are formed at regular intervals on the outside of the high-pressure container (10) to reinforce the high-pressure container (10) so that it is safe even under increasing pressure, thereby improving durability; or the thickness of the high-pressure container (10) is formed with a sufficient thickness, and a portion is cut to retain multiple external reinforcing protrusions (13), thereby reinforcing the high-pressure container (10) so that it is safe even under increasing pressure, thereby improving durability. However, due to the bottom filling cover part (60) assembled to the bottom of the high-pressure container (10) and the upper cap part (40) assembled to the top of the high-pressure container (10), cutting is performed to form the upper female screw (14) and the lower female screw (16) of the high-pressure container (10), which makes the high-pressure container (10) vulnerable to pressure, and there is a limitation on the installation position of the reinforcing flange (12) due to the assembly location, the external on the outside of the high-pressure container (10) It is characterized by having multiple reinforcing protrusions (13) distributed therein.

[0077] In addition, the structure reinforcing the high-pressure vessel (10) adopts an interlocking structure when combining each part, so that the internal high pressure can be effectively withstood due to the interlocking between the parts, and the interlocking structure is to be explained in more detail.

[0078] In the present invention, a bottom filling cover part (60) is assembled by screw coupling with a bottom filling cover coupling screw (604) formed on the outer periphery of the bottom filling cover part (60) and a container bottom female screw (16) formed on the bottom of the high-pressure container (10). The structure in which the bottom filling cover part (60) engages with the lower edge of the high-pressure container (10) to withstand high internal pressure is such that a container bottom coupling projection (18) protruding downward from the lower edge of the high-pressure container (10) engages with a bottom filling cover coupling projection groove (608) of the bottom filling cover part (60), and a container bottom joining surface (19) formed on the lower edge of the high-pressure container (10) contacts the bottom filling cover joining surface (609) of the bottom filling cover part (60), and the container bottom formed on the lower edge of the high-pressure container (10) The configuration is characterized in that the connecting projection (18) is coupled with the bottom filling cover connecting projection groove (608) of the bottom filling cover part (60), so that when the high-pressure container (10) swells and deforms due to high internal pressure, the bottom filling cover restraining projection (607) restrains the container bottom connecting projection (18) to withstand the high internal pressure.

[0079] In the present invention, an upper cap portion (40) is assembled by screw coupling with a female screw (14) formed on the upper part of the high-pressure container (10) and a male screw (422) formed on the outer periphery of the upper cap portion (40), and the structure in which the upper cap portion (40) engages with the upper edge of the high-pressure container (10) to withstand high internal pressure is such that a container upper coupling projection (16) protruding upward from the upper edge of the high-pressure container (10) engages with the upper cap portion coupling projection groove (412) of the upper cap portion (40), and a container upper joining surface (17) formed on the upper edge of the high-pressure container (10) contacts the upper cap portion joining surface (414) of the upper cap portion (40), and the container upper coupling projection (16) formed on the upper edge of the high-pressure container (10) is the upper cap portion of the upper cap portion (40). It is characterized by a configuration in which the upper cap restraining protrusion (413), combined with the connecting protrusion groove (412), restrains the upper cap restraining protrusion (413) to withstand the high pressure internal pressure when the high-pressure container (10) swells and deforms due to high pressure.

[0080] A structure has been described in which, due to the unique connection between the upper cap (40) and the high-pressure container (10), high-pressure air containing oxygen is injected at a high pressure, and the container is not deformed due to internal pressure and can be safely stored. The upper cap (40) is equipped with a main pressure reduction unit (90), a discharge pressure reduction unit (80), and a pressure display unit (70).

[0081] In the present invention, the upper cap portion (40) is configured to be coupled to the upper part of a cylindrical high-pressure container (10) to withstand the internal pressure (10ap) of the high-pressure container. The upper cap portion (40) to be coupled is equipped with the main pressure reducing portion (90), the discharge pressure reducing portion (80), and the pressure display portion (70). The lower part of the main pressure reducing portion (90) is in communication with the inside of the high-pressure container (10), and the upper part is in contact with and in communication with the discharge pressure reducing portion (80). The discharge pressure reducing portion (80) is configured to press the discharge pressure reducing portion (80) according to the up-and-down movement of the discharge amount control portion (50), and to press the main pressure reducing portion (90) which is in contact with and linked with the discharge pressure reducing portion (80), thereby allowing air to be discharged. The pressure display portion (70) is formed through the pressure gauge coupling hole (47) of the upper cap portion (40) which is formed to be in communication with the inside of the high-pressure container (10). It is characterized by displaying the pressure transmitted through the pressure-transmitting microhole (474) and the pressure displayed through the pressure gauge flow hole (722) on the pressure display surface (710).

[0082] The above-mentioned internal pressure of the high-pressure vessel (10ap) has the same meaning as the internal pressure 6 (692), and is a representation of the pressure applied to each location separately, meaning the internal pressure of the high-pressure vessel (10ap) which is substantially the same pressure.

[0083] In the present invention, the discharge amount control unit (50) is characterized by being composed of a push block (51), a push button (512), a push block guide (53), and a push button cover unit (30), which is configured to guide the push button (512) to the push block guide (53) and move the push block (51) up and down to press the nozzle member (120) of the main pressure reducing member (100) up and down so that air containing oxygen is supplied to the user through the air discharge hole (519).

[0084] The discharge volume control unit (50) of the present invention plays the role of increasing or decreasing the discharge volume of air as the discharge volume control unit (50) is displaced up and down, and the discharge pressure reduction unit (80) is normally exposed to the external space at a pressure equal to atmospheric pressure, but when high-pressure air is discharged according to the up and down displacement of the discharge volume control unit (50), it passes through the section where the pressure reduction phenomenon of the main pressure reduction unit (90) occurs and then again generates pressure reduction, so that air containing oxygen passes through the discharge pressure reduction unit (80) and the discharge volume control unit (50) and is supplied to the user through the air discharge hole (519).

[0085] In the present invention, the discharge pressure reduction unit (80) is normally exposed to an external space at a pressure equal to atmospheric pressure, and when high-pressure air is discharged while the nozzle head (126) of the nozzle member (120) belonging to the main pressure reduction unit (90) is pressed downward due to the discharge pressure reduction unit (80) in contact with the discharge amount control unit (50), it is a section where pressure reduction occurs again after passing through the section where the pressure reduction phenomenon of the main pressure reduction unit (90) occurs. It is installed in the discharge pressure reduction member installation hole (802), which is a circular installation space within the upper cap unit (40), and the discharge pressure reduction upper piece (810) is connected to and linked with the push block tip (514), which is the lower end of the discharge amount control unit (50), and is installed in contact with the lower part of the discharge pressure reduction upper piece (810) in the discharge pressure reduction member installation hole (802), which is a circular installation space within the upper cap unit (40), and the main It is characterized by being composed of a discharge pressure reduction lower piece (830) that is in contact with and linked to the upper surface (128) of the nozzle head of the pressure reduction unit (90), and is exposed to the external space at a pressure equal to atmospheric pressure, and then, when the push button (512) or slide button (512) is pressed, the pressure reduction of the main pressure reduction unit (90) occurs and then the pressure reduction is performed again, and the discharge pressure reduction upper piece (810) and the discharge pressure reduction lower piece (830) are configured to form a discharge pressure reduction 1 section (470) and a discharge pressure reduction 2 section (480).

[0086] The present invention explains the roles of the main pressure reduction unit (90) and the discharge pressure reduction unit (80) that perform the role of pressure reduction. In the present invention, the main pressure reduction unit (90) is configured to be coupled to the upper part of a cylindrical high-pressure container (10) to withstand the internal pressure (10ap) of the high-pressure container, and is equipped with the discharge pressure reduction unit (80) and the pressure display unit (70) inside the cap unit (40) which is sealed and coupled, and is coupled to the main pressure reduction member installation space (102). The lower part of the main pressure reduction unit (90) is connected to the inside of the high-pressure container (10) and is in contact with high-pressure air containing oxygen, and the upper part is connected to the discharge pressure reduction unit (80). The discharge pressure reduction unit (80) moves up and down in conjunction with the up and down movement of the discharge amount control unit (50) push button (512) or slide button (52). The nozzle member (120) of the main pressure reduction unit (90), which is in contact with and linked with the discharge pressure reduction unit (80), moves up and down in conjunction with the discharge pressure reduction unit (80) so that air is discharged, discharge is reduced, or is submerged, and is characterized by depressurizing the air inside the high-pressure container (10) containing high-pressure oxygen in multiple stages.

[0087] This explains the interaction relationship between the discharge volume control unit (50) and the main pressure reduction unit (90) of the present invention. In the present invention, the main pressure reduction unit (90) is in contact with and interacts with the lower part of the discharge pressure reduction unit (80), which is in contact with and interacts with the discharge volume control unit (50) according to the up-and-down movement of the push button (512) or the slide button (52), and is capable of up-and-down movement. It also includes a nozzle member (120) coupled to the upper part of the movable nozzle member (130) which is pushed upward by the internal space pressure (222p) of the depressurized air filled in the internal space (222) of the movable nozzle member (130), and a nozzle guide member (110) that guides the movable nozzle member (130), a movable nozzle member (130) coupled to be able to move up and down according to the control of the discharge volume control unit (50) inside the nozzle guide member (110), and a locking pressure by the rotation of a screw that is coupled to the nozzle guide member (110). It is characterized by being composed of a locking pressure regulating pressure reducing member (140) that regulates, restrains, and combines the nozzle guide member (110) to reduce high-pressure air containing oxygen, and a nozzle member (120) and a movable nozzle member (130) are housed in the internal space formed by the nozzle guide member (110) and the pressure regulating pressure reducing member (140) so as to be movable according to the regulation of the discharge volume regulating unit (50), so that the amount of air discharged is proportional to the vertical movement distance of the discharge volume regulating unit (50).

[0088] The above main pressure reduction unit (90) includes a scope-oriented meaning, and the main pressure reduction member (100) means that each component is gathered together; substantially, the above main pressure reduction unit (90) can be seen as meaning the main pressure reduction member (100).

[0089] The detailed configuration and effects of the main pressure reduction unit (90) described above will be explained with reference to FIGS. 8 to 14.

[0090] In the present invention, the main pressure reduction section (90) refers to the main pressure reduction member (100), and the main pressure reduction member (100) is composed of a plurality of pressure reduction sections (400), the first pressure reduction section (410) is composed of a first gap section (310) and a first pressure reduction space section (210), the second pressure reduction section (420) is composed of a second gap section (320) and a second pressure reduction space section (220), the third pressure reduction section (430) is composed of a third gap section (330) and a third pressure reduction space section (230), the fourth pressure reduction section (440) is composed of a fourth gap section (340) and a fourth pressure reduction space section (240), and the fifth pressure reduction section (450) is composed of a fifth gap section (350) and a fifth pressure reduction space section (250), so that the sixth The pressure reduction section (460) is composed of a sixth gap section (360) and a sixth pressure reduction space section (260), and is composed of an air supply section (50) that supplies reduced air to the user so that the pressure of the high-pressure air filled inside the high-pressure container (10) is gradually reduced in sequential sections to allow the user to breathe comfortably. Each of the pressure reduction sections is characterized by the ability to perform pressure reduction by omitting the space section of the corresponding section.

[0091] The fact that each of the above-mentioned pressure reduction sections can perform pressure reduction by omitting the corresponding section's space means that, for example, in two pressure reduction sections where the first pressure reduction section (410) is composed of a first gap section (310) and a first pressure reduction space section (210), and the second pressure reduction section (420) is composed of a second gap section (320) and a second pressure reduction space section (220), if the first pressure reduction space section (210) is omitted in the first pressure reduction section (410) where high-pressure air moves from inside the high-pressure container (10), passes through the first gap section (310), arrives at the first pressure reduction space section (210), and pressure reduction proceeds, then in the first pressure reduction section (410), high-pressure air moves from inside the high-pressure container (10), passes through the first gap section (310), and the second Since it passes through the gap section (320) and arrives at the second pressure reduction space section (220), the first pressure reduction section (410) is omitted and only the second pressure reduction section (420) exists.

[0092] In the present invention, when the push button (512) or slide button (52) of the discharge volume control unit (50) is not operated in the standby state, the first pressure reduction section (410) to the third pressure reduction section (430) is equal to the internal pressure of the high-pressure container (10), and the fourth pressure reduction section (440) to the sixth pressure reduction section (460), which is the section behind the locked sealing protrusion (132) and sealing member 2 (118), is equal to the atmospheric pressure. When the push button (512) or slide button (52) of the discharge volume control unit (50) is operated in the usage state, the pressure is gradually reduced from the internal pressure of the high-pressure container (10) to the first pressure reduction section (410) to the sixth pressure reduction section (460), so as to be supplied to the user by passing between the open sealing protrusion (132) and sealing member 2 (118).

[0093] The principle of depressurization is that when a fluid moves from a narrow gap to a wider area, its pressure drops, and the narrower the gap, the greater the degree of depressurization.

[0094] Therefore, each of the above-mentioned depressurization sections can change the depressurization rate by changing the ratio of the cross-sectional area of ​​the space portion of the section where high-pressure air flows to the cross-sectional area of ​​the gap portion.

[0095] In the present invention, the first pressure reduction section (410) is a section in which high-pressure air filled inside the high-pressure container (10) is reduced in pressure. The high-pressure air filled inside the high-pressure container (10) flows through a narrow space, the first gap section (310), and pressure reduction proceeds. The first section is composed of the inside of the high-pressure container (10), the first gap section (310), and the first pressure reduction space section (210). The first gap section (310) is configured to be combined with a gap female screw (142) formed inside the cylindrical main pressure reduction member installation space (102) inside the upper cap section (40) and a gap male screw (144) formed on the outside of the locking pressure control pressure reduction member (140), so that high-pressure air flows through the gap between the screw threads and screw grooves formed by the gap female screw (142) and the gap male screw (144). The pressure reduction space (210) is composed of a space formed by passing through a gap female screw (142) formed inside a cylindrical main pressure reduction member installation space (102) inside an upper cap part (40) at the point where the path of the first gap part (310) ends, and a space formed by passing through a gap male screw (144) formed on the outer side of a locking pressure control pressure reduction member (140) and omitting the gap male screw (144), and the gap between the outer surface of the nozzle guide member (110) and the inner wall of the main pressure reduction member (100) installation space inside the upper cap part (40) is sealed through a sealing member 1 (116), and is characterized by being composed of a section in which pressure reduction proceeds as it passes through the first gap part (310) inside the high-pressure container (10) and reaches the first pressure reduction space (210), which is an expanded space.

[0096] This describes the pressure reduction situation in the second pressure reduction section (420) after passing through the first pressure reduction section (410) in the main pressure reduction member (100). In the present invention, the second pressure reduction section is a section where the pressure reduced after passing through the first pressure reduction section is further reduced. High-pressure filled air inside the high-pressure container (10) flows through a narrow space, and the air undergoing pressure reduction reaches the first pressure reduction space (210). The air then passes through the second gap section (320) from the first pressure reduction space (210) and reaches the second pressure reduction space (220), which is an expanded space, where pressure reduction proceeds. The second gap section (320) is composed of the second gap section (320) and the second pressure reduction space (220). The second gap section (320) is a gap that forms a gap by penetrating from the outer surface to the inner surface of the locking pressure control pressure reduction member (140) that forms the first pressure reduction space (210). A through hole (322) is formed, and a gap (324) formed between the outer surface of the nozzle guide member (110) and the inner surface of the locking pressure control pressure reduction member (140) is formed. The second pressure reduction space (220) is composed of an inner space (222) in which the inside of the movable nozzle member (130) is ground and the path of the second gap section (320) ends and the space expands, an intermediate space 2 (226) which is the space remaining after the movable nozzle member (130) is coupled to the nozzle guide member (110), and an intermediate space 1 (224) between the nozzle guide member (110), the rear end, and the locking pressure control pressure reduction member (140). The pressure reduction is characterized by being composed of a section in which the pressure proceeds as it passes through the second gap section (320) from the first pressure reduction space (210) and reaches the second pressure reduction space (220), which is the expanded space.

[0097] This describes the pressure reduction situation in the third pressure reduction section (430) after passing through the second pressure reduction section (420) in the main pressure reduction member (100). In the present invention, the third pressure reduction section is a section where further pressure reduction is performed to make it convenient for the user to use the pressure reduced after passing through the second pressure reduction section. The high-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the second pressure reduction space (220), which is an expanded space, where pressure reduction is performed. The second pressure reduction space (220) passes through the third gap section (330) and reaches the third pressure reduction space (230), which is an expanded space, where pressure reduction is performed. The third gap section (330) is composed of the second pressure reduction space (220), the third gap section (330), and the third pressure reduction space (230). The third gap section (330) is a nozzle guide through which the high-pressure air present in the second pressure reduction space (220) passes. The third pressure reduction space (230) is formed as a gap between the inner surface of the member (110) and the lower outer surface (134) of the movable nozzle member (130), and is composed of a space formed between the outer surface cutting surface (136) formed on the central outer surface of the movable nozzle member (130) and the inner surface of the nozzle guide member (110), where the path of the third gap section (330) ends and the space expands, and is characterized by being composed of a section in which pressure reduction proceeds as it passes through the third gap section (330) from the second pressure reduction space (220) and reaches the third pressure reduction space (230), which is an expanded space.

[0098] This describes the pressure reduction situation in the fourth pressure reduction section (440) after passing through the third pressure reduction section (430) in the main pressure reduction member (100) above. In the present invention, the fourth pressure reduction section is a section where further pressure reduction is performed to make it convenient for the user to use the pressure reduced after passing through the third pressure reduction section. High-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the third pressure reduction space section (230), which is an expanded space, where pressure reduction is performed. From the third pressure reduction space section (230), it passes through the fourth gap section (340) and reaches the fourth pressure reduction space section (240), which is an expanded space, where pressure reduction is performed. The fourth pressure reduction space section (240) is composed of the third pressure reduction space section (230), the fourth gap section (340), and the fourth pressure reduction space section (240). The fourth gap section (340) is a nozzle guide through which the high-pressure air present in the third pressure reduction space section (230) passes. It is formed by an upper gap (342) between the inner surface of the member (110) and the upper outer surface (134) of the movable nozzle member (130), an upper surface protrusion gap (344) formed by maintaining airtightness of high-pressure filled air inside the high-pressure container (10) through close contact between a circular sealing member 2 (118) formed at the front end of the inner hole of the nozzle guide member (110) and a circular sealing projection (132) formed on the front surface of the movable nozzle member (130), and an upper surface gap (345) which is the gap between the lower surface of the sealing member 2 (118) and the upper surface (139) of the movable nozzle member (130). When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge amount control part (50), the gap between the sealing member 2 (118) and the sealing projection (132) increases according to the distance of pressing, so that the discharged As the air increases and moves upward, the gap between the sealing member 2 (118) and the sealing projection (132) becomes smaller, so the discharged air decreases, and when the pressure disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is submerged, and the fourth pressure reduction space (240) is formed along the lower outer circumference of the nozzle member (120) where the path of the fourth gap section (330) ends and the space expands, and the wall surface and the upper surface (139) of the movable nozzle member, andIt is characterized by being composed of a space formed by the lower surface (115) of the nozzle tapered stem hole and one side of the sealing member 2 (118), and a section in which pressure reduction proceeds as it passes through the third pressure reduction space (230) and reaches the fourth pressure reduction space (240), which is an expanded space.

[0099] This describes the pressure reduction situation in the fifth pressure reduction section (450) after passing through the fourth pressure reduction section (440) in the main pressure reduction member (100) above. In the present invention, the fifth pressure reduction section is a section where further pressure reduction is performed to make it convenient for the user to use the pressure reduced after passing through the fourth pressure reduction section. High-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the fourth pressure reduction space section (240), which is an expanded space, where pressure reduction is performed. From the fourth pressure reduction space section (240), it passes through the fifth gap section (350) and reaches the fifth pressure reduction space section (250), which is an expanded space, where pressure reduction is performed. The fifth pressure reduction space section (250) is composed of the fourth pressure reduction space section (240), the fifth gap section (350), and the fifth pressure reduction space section (250). The fifth gap section (350) is a movable nozzle through which the high-pressure air present in the fourth pressure reduction space section (240) passes. The nozzle tapered stem (124) of the nozzle member (120), which is formed as a single body at the tip of the member (130), and the nozzle tapered stem groove (114) formed by the inner surface of the hollow nozzle guide (112) of the nozzle guide member (110) are formed by a tapered stem gap (346), and when the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge amount control part (50), the gap of the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap of the tapered stem gap (346) contracts, decreasing the discharged air, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is submerged, and the fifth pressure reduction space part (250) is the fifth It is characterized by being composed of a space formed between the inner surface of the hollow nozzle guide (112) and the circumferential groove (122) of the nozzle machined along the circumference at the center of the outer circumferential surface of the nozzle member (120), where the path of the gap section (350) ends and the space expands, and a section in which pressure reduction proceeds as it passes through the 5th gap section (350) from the 4th pressure reduction space section (240) and reaches the 5th pressure reduction space section (250), which is an expanded space.

[0100] This describes the pressure reduction situation in the sixth pressure reduction section (460) after passing through the fifth pressure reduction section (450) in the main pressure reduction member (100) above. In the present invention, the sixth pressure reduction section is a section where further pressure reduction is performed to make it convenient for the user to use the pressure reduced after passing through the fifth pressure reduction section. High-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the fifth pressure reduction space (250), which is an expanded space, where pressure reduction is performed. From the fifth pressure reduction space (250), it passes through the sixth gap section (360) and reaches the sixth pressure reduction space (260), which is an expanded space, where pressure reduction is performed. The system is composed of the fifth pressure reduction space (250), the sixth gap section (360), and the sixth pressure reduction space (260). The sixth gap section (360) is a nozzle guide through which the high-pressure air present in the fifth pressure reduction space (250) passes. The nozzle member (110) is configured with a gap formed between the hollow inner surface of the hollow nozzle guide (112) and the cylindrical nozzle head (126), and when the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the discharged air, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is submerged, and the sixth pressure reduction space part (260) is formed such that the path of the sixth gap part (360) ends and the space expands, the nozzle head (126), which is the tip of the nozzle member (120), protrudes and the discharge pressure reduction part (80) is installed in the upper part It is characterized by being composed of a space formed by the bottom surface (435) of the discharge pressure reduction member coupling hole (433), which is a circular installation space within the cap portion (40), and the bottom surface (831) of the discharge pressure reduction lower piece, which is the bottom surface of the discharge pressure reduction member coupling hole (433) and the discharge pressure reduction member (800), and a section in which pressure reduction proceeds by passing through the 6th gap portion (360) from the 5th pressure reduction space portion (250) and reaching the 6th pressure reduction space portion (260), which is an expanded space.

[0101] In order to perform multiple stages of pressure reduction in the main pressure reduction member (100) and to more stably form the pressure of the air containing oxygen and to stably supply the amount of reduced air, the process of performing multiple stages of pressure reduction is performed, and the pressure reduction structure after passing through the main pressure reduction member (100) explains the pressure reduction situation in the second pressure reduction section (420) after passing through the first pressure reduction section (410), and is the pressure reduction section of the discharge pressure reduction unit (80).

[0102] Hereinafter, a breathing device according to the first embodiment of the present invention will be described. The description of the pressure reduction sections of the discharge pressure reduction unit (80) will be explained with reference to FIGS. 15, 16, and 21.

[0103] This explains that the pressure reduction section of the discharge pressure reduction unit (80) is composed of a discharge pressure reduction section 1 (470) and a discharge pressure reduction section 2 (480). In the present invention, the pressure reduction section of the discharge pressure reduction unit (80) is composed of a discharge pressure reduction upper part (810) and a discharge pressure reduction lower part (830). The detailed configuration is a discharge pressure reduction section 1 (470) in which pressure reduction is performed by arriving at the discharge pressure reduction space 1 (270), which is a space composed of the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube, through the discharge pressure reduction gap 1 (370), which is a pressure reduction lower part connection hole (837) from the 6th pressure reduction space (260). From the discharge pressure reduction space 1 (270), the lower It is characterized by being composed of a discharge pressure reduction section (480) in which pressure reduction proceeds by passing through a discharge pressure reduction gap 2 (380), which is a gap formed between a circular protruding projection (846) and the inner surface (813) of the upper pressure reduction piece, and arriving at a discharge pressure reduction space 2 (280), which is a space formed by a lower circular protruding tube groove (842) and the inner surface (813) of the upper pressure reduction piece.

[0104] This explains that pressure reduction proceeds while passing through the main pressure reduction member (90) and continues to proceed while passing through the discharge pressure reduction section 1 (470) among the pressure reduction sections of the discharge pressure reduction section (80). In the present invention, the discharge pressure reduction section 1 (470) is a section where pressure reduction is further performed through the discharge pressure reduction section (80) so that the pressure reduced after passing through the 6th pressure reduction section (460) is convenient for the user to use. The pressure reduction of one stage is completed while passing through the main pressure reduction member (100) which reduces high-pressure filled air inside the high-pressure container (10). It is an expanded space through the 6th gap section (360), which is a gap formed between the lower surface of the nozzle head (126) and the hollow inner wall of the hollow nozzle guide (112), and the lower surface (831) of the discharge pressure reduction lower part (830) of the discharge pressure reduction section (80) and the discharge pressure reduction member The first stage of pressure reduction is completed by reaching the sixth pressure reduction space (260), which is formed by the space between the lower surface (804) of the installation space (802); for the second stage of pressure reduction, the pressure reduction lower part connecting hole (837), formed by the narrow hole of the discharge pressure reduction lower part (830) of the discharge pressure reduction section (80) in the sixth pressure reduction space (260), acts as the discharge pressure reduction gap 1 (370); passing through the discharge pressure reduction gap 1 (370), it reaches the discharge pressure reduction space 1 (270), which is a wide space formed by the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube; thereby completing the first discharge pressure reduction section (470) and achieving pressure reduction, and discharge from the sixth pressure reduction space (260) It is characterized by being composed of a section in which pressure reduction proceeds as it passes through the pressure reduction gap 1 (370) and reaches the expanded space, the discharge pressure reduction 1 space (270).

[0105] This explains that pressure reduction proceeds while passing through the main pressure reduction member (90), and continues to proceed by passing through the discharge pressure reduction section 1 (470) and then through the discharge pressure reduction section 2 (480) among the pressure reduction sections of the discharge pressure reduction section (80). In the present invention, the discharge pressure reduction section 2 (480) is a section where pressure reduction is further performed through the discharge pressure reduction section (80) so that the pressure reduced after passing through the discharge pressure reduction section 1 (470) is convenient for the user to use. As the second step of the two-stage pressure reduction, it passes through the discharge pressure reduction section 2 gap (380), which is a gap formed between the lower circular protrusion (846) formed at a narrow interval in the discharge pressure reduction section 1 (270) and the inner surface (813) of the pressure reduction upper piece, and then passes through the discharge pressure reduction section 2, which is a space formed by the lower circular protrusion tube groove (842) and the inner surface (813) of the pressure reduction upper piece. It is characterized by being composed of a section in which pressure reduction proceeds as it reaches the 2nd space (280) and the 2nd discharge pressure reduction section (480) is completed and pressure reduction is performed, and the discharge pressure reduction section (280), which is an expanded space, is reached from the 1st discharge pressure reduction space (270) through the 2nd discharge pressure reduction gap (380).

[0106] This explains the operational relationship between the discharge pressure reduction unit (80) and the discharge volume control unit (50). It explains the operational relationship in which, when the push button (512) is pressed, the discharge volume control unit (50), which is a single body, is pressed, and the nozzle head (126) of the nozzle member (120) is pressed, causing air to be discharged. In the present invention, the discharge pressure reduction unit (80) is normally exposed to the external space at a pressure equal to atmospheric pressure, and is a section where a pressure reduction phenomenon occurs only when the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control unit (50) and discharges. It is installed in a circular installation space, which is the internal space of the upper cap unit (40), and the discharge pressure reduction upper piece (810) which contacts and interacts with the lower end of the discharge volume control unit (50), and the main pressure reduction member (100) which is installed in a circular installation space, which is the internal space of the upper cap unit (40). It is composed of a discharge pressure reduction lower part (830) that is in contact with and interlocked with the upper surface (128) of the nozzle head, and the discharge pressure reduction upper part (810) and the discharge pressure reduction lower part (830) are configured to be in contact while maintaining airtightness, and the amount of air discharged is increased or decreased through the upper surface (128) of the nozzle head of the main pressure reduction member (100) that is in contact with the lower end of the intermediate discharge pressure reduction part (80) according to the movement of the discharge amount control part (50), and the lower end of the discharge amount control part (50), which is the lower end of the push block tip (58), contacts the discharge passage (817) of the discharge pressure reduction upper part (810) and pushes downward, and the discharge pressure reduction lower part (830) that is in close contact with the lower side of the discharge pressure reduction upper part (810) is pushed downward, and the upper surface (128) of the nozzle head that is in contact with the lower surface of the discharge pressure reduction lower part (830) It is characterized by being configured such that the main pressure relief member (100) is opened by being pressed, allowing high-pressure air to be discharged.

[0107] This explains the mutual configuration and operational relationship between the discharge pressure reduction unit (80), the upper cap unit (40), and the discharge amount control unit (50). In the present invention, the discharge pressure reduction unit (80) is installed in the discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap unit (40), and is composed of a discharge pressure reduction upper piece (810) that is in contact with and interlocked with the lower end of the discharge amount control unit (50), and a discharge pressure reduction lower piece (830) that is installed in the discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap unit (40), and is in contact with and interlocked with the nozzle head upper surface (128) of the main pressure reduction member (100). Pressure reduction is achieved through the discharge pressure reduction 1 space (270) and discharge pressure reduction 2 space (280) formed by the discharge pressure reduction upper piece (810) and the discharge pressure reduction lower piece (830). It is provided with a configuration in which a pressure-reducing upper piece (810) is provided with a pressure-reducing upper piece O-ring (811) on the outer surface of the pressure-reducing upper piece (810), and a passage is connected to the discharge port (29) and the discharge passage (27) of the push block (51) in the center of the upper surface of the pressure-reducing upper piece (810), and a discharge passage (817) is formed penetrating from the inner surface of the pressure-reducing upper piece (810), and the inner surface of the pressure-reducing upper piece (810) is formed with two steps protruding from the flat inner surface (813) of the pressure-reducing upper piece to form a pressure-reducing upper piece middle surface (815) and an upper airtight contact surface (816), and the upper airtight contact surface (816), which is the end step surface of the pressure-reducing upper piece (810), contacts the lower airtight contact surface (836) of the pressure-reducing lower piece (830) to maintain airtightness, and the pressure-reducing upper piece A plurality of discharge pressure reduction gaps (370), which are discharge pressure reduction lower part connecting holes (837) that connect an air passage from the lower surface of the discharge pressure reduction lower part (830) to the discharge pressure reduction lower part protruding surface (835), are formed by penetrating the middle step surface (815) of the upper part (810) and the protruding surface (835) of the discharge pressure reduction lower part (830) to maintain airtightness.A discharge pressure reduction space (270) is formed at the point where the discharge pressure reduction lower part connection hole (837) ends, and the discharge pressure reduction space (270) is composed of the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube, and the lower surface (831) of the discharge pressure reduction lower part (830) is configured to be in contact with the upper surface (128) of the nozzle head of the main pressure reduction member (100).

[0108] In the present invention, the bottom filling cover portion (60) is assembled at the bottom of the high-pressure container (10) and is configured to fill high-pressure air inside the high-pressure container (10). It is composed of a bottom filling cover member (600) configured according to the specifications of an air supply device. Inside the bottom filling cover member (600), a filling port inlet 6 (660), which is a straight hole shape formed through the outside, is configured to penetrate through the center of a sealing projection 6 (612). A sealing support member 6 (620) and a sealing member 6 (610) are combined and assembled in a filling port installation hole (603) equipped with a sealing projection 6 (612) on a circular bottom surface. A washer 6 (640) is assembled on the sealing support member 6 (620), and a gap 6 (694) is left, and the filling port is locked with a locking ring 6 (650). In a high-pressure filling air tank, a straight hole shape High-pressure air is injected through the filling port inlet 6 (660) at a filling pressure (662). Normally, the sealing protrusion 6 (612) and the sealing member 6 (610), which are formed in a circular shape and protrude upward inside the filling port installation hole (603), are pushed by the high-pressure internal pressure (10ap) present inside the container, thereby maintaining airtightness. However, when filling with air, high-pressure air is injected through the filling port inlet 6 (660), which is a straight hole shape, at a filling pressure (662) from the high-pressure filling air tank. The filling pressure (662) injected through the filling port inlet 6 (660) causes the sealing member 6 (610), combined with the sealing support member 6 (620), to overcome the high-pressure internal pressure (10ap) and push backward to the locking ring 6 (650), thereby the sealing protrusion 6 (612) and It is characterized by a gap being created between the sealing members 6 (610), and air containing high-pressure oxygen entering through the gap, and then entering and filling the interior of the high-pressure container (10) through the filling gap 6 (630) formed between the sealing support member 6 (620) and the inner wall of the filling hole (603).

[0109] In the present invention, the push block (51) of the discharge amount control unit (50) is composed of a push button (512), a push block body (52), a push block guide unit (518), a push block push rod (516), and a push block tip (514). The push block body (52) is configured on the upper part of the push block (51) which is integrally formed with the push block body (52), and the push button (512) causes the push block (51) to move up and down as it is pressed by hand or pressure is removed. The push block body (52) has a discharge port coupling hole (26) formed horizontally on one side of the push block (51), and a discharge port passage (27) formed vertically in communication with it, and a discharge passage (517) formed internally by communicating with the push block guide unit (518), the push block push rod (516), and the push block tip (514). The push block body (52) has an outer surface that is in contact and coupled to guide the push block (51) by being coupled inside the push block guide groove (536). The device is characterized by comprising a push block guide portion (518), a push block push rod (516) which is integrally formed at the lower part of the push block guide portion (518), which is coupled to be movable up and down by passing through the push block push rod penetration hole (538) inside the push block guide groove (536), and which is coupled to the lower part by contacting the discharge pressure reducing member (600) with the push block tip (514), and a push block tip (514) which contacts the discharge pressure reducing member (600) and pushes the discharge pressure reducing member (600) up and down according to the movement of the push button (512).

[0110] In the present invention, the push button (512) of the discharge amount control unit (50) is formed with an arc-shaped groove on the upper side and straight irregularities (513) formed to facilitate pressing the button by preventing fingers from slipping, and a push button coupling hole (392') for coupling the push button (512) is drilled on the upper side of the push button cover (39), and push button stopper protrusions (394) are installed on both sides downward from the push button coupling hole (392'), and corresponding button side protrusions (515) are formed on both sides of the push button (512). When the push button (512) is pressed with a finger, the push block (51) is pressed, causing high-pressure air to be discharged, and when the pressing force is removed, the push block (51) moves upward due to the internal pressure of the high-pressure container (10), and the corresponding button side protrusions (515) formed on both sides of the push button (512) are pushed. It is characterized by being configured so that the air containing oxygen being discharged is locked by being caught on the push button stopper projection (394) of the cover (39).

[0111] In the present invention, the push block guide (53) of the discharge amount control unit (50) comprises a push block guide groove (536) in which the outer surface of the push block guide (518) contacts and is coupled to guide the push block (51), a push block push rod penetration hole (538) in which the push block push rod (516) passes through and is coupled inside the push block guide groove (536), a cone-shaped push block push rod spring (516S) formed on the outer surface of the push block push rod (516) and constrained and coupled between the lower end of the push block guide (518) and the inner surface of the push block guide groove (536), which is installed to maintain a certain distance so that the nozzle member (120) is not pressed by not pressing the discharge pressure reducing member (800) when the push block tip (514) of the push block (51) does not supply air, and the push block push rod (516S) that guides the push block push rod (516) when it moves up and down. The device is characterized by comprising a push block push rod circular guide (539) formed extending from the lower part of a through hole (538), a push block guide fixing bolt hole (532) for fixing the push block guide (53) to the upper part of an upper cap part (40) with a bolt, a guide coupling groove (534) of the push block guide (53) into which a coupling projection (36) formed on the lower part of a push button cover (39) is coupled to a groove formed on both side corners of the guide fixing bolt hole (532), a coupling projection groove (426) of the upper cap part (40), and a pressure display member coupling groove (535) in which the pressure display member (700) is screw-coupled to the upper cap part (40) and the pressure display surface (710) of the pressure display member (700) protrudes.

[0112] In the present invention, the push button cover portion (30) of the discharge amount control portion (50) is interconnected with and operates with the push button (512). A push button coupling hole (392') is provided in the center of the push button cover portion (30) so that the push button (512) is coupled from the bottom to the top of the push button cover portion (30). When the push button (512) moves up and down, the push button coupling hole (392') guides the push button (512) so that it does not move out. The coupling projection (36) of the push button cover portion (30) is coupled to the guide coupling groove (534) of the push block guide (53) and the coupling projection groove (426) of the upper cap portion (40) to position the push button stopper projection (394) and the button side protrusion projection (515) so that they correspond to each other. A reinforcing flange (34) is formed at the bottom of the push button cover portion (30), so that the button cover of the button cover fixing ring (54) A reinforcing flange (34) is engaged with a fixing internal projection (542) to rotate the button cover fixing ring (54), thereby connecting the button cover fixing ring fixing female screw (544) and the button cover fixing ring fixing male screw (424) to secure it. A push button coupling hole (392') for coupling a push button (512) is drilled in the upper part of the push button cover (39), and a push button stopper projection (394) is installed on both sides downward from the push button coupling hole (392') to form corresponding button side protrusions (515) on both sides of the push button (512). When the push button (512) is pressed with a finger, the push block (51) is pressed, causing high-pressure air to be depressurized and discharged. When the pressing force is removed, the push block (51) moves upward due to the internal pressure of the high-pressure container (10), and the corresponding button side protrusions formed on both sides of the push button (512) It is characterized by being configured such that the protrusion (515) is caught on the push button stopper protrusion (394) of the push button cover (39) to stop it, thereby locking the air containing oxygen being discharged.

[0113] In the present invention, the assembly sequence of the components of a portable refillable air breathing apparatus for life rescue purposes, in which the multi-stage pressure reduction structure is built-in, is as follows: a container bottom upper sealing ring (15c) and a container bottom lower sealing ring (15d) are respectively fitted into the container bottom upper sealing ring groove (15ch) and the container bottom lower sealing ring groove (15dh) of a bottom filling cover member (600) in a high-pressure container (10) in which a reinforcing flange (12) is formed internally; a container bottom female screw (15) of the high-pressure container (10) is screw-coupled with a bottom filling cover coupling screw (604); an internal upper cap part partition flange (41) protruding inwardly is formed to partition the main pressure reduction member coupling hole (432) and the discharge pressure reduction member coupling hole (433) inside the upper cap part (40); and the main pressure reduction member (100) is positioned from the lower direction to the upper direction of the upper cap part (40) Screw-coupled to the coupling hole (432), insert and connect the discharge pressure reducing member (600) into the discharge pressure reducing member coupling hole (433) from the upper direction to the lower direction of the upper cap part (40), and connect the upper cap container upper sealing ring (15a) and the upper cap container lower sealing ring (15b) to the upper cap container upper sealing ring groove (15ah) and the upper cap container lower sealing ring groove (15bh) formed in the upper cap part (40), respectively, screw-couple the upper female screw (14) of the high-pressure container (10) and the upper cap male screw (422), screw-couple the pressure display part (70) into the pressure display member coupling hole (434) from the upper direction to the lower direction of the upper cap part (40), and connect a push block guide (53) so that the pressure display part (70) is inserted into the pressure display member coupling groove (535) of the upper cap part (40), and the above A push block (51) is inserted and coupled to a push block guide (53) so as to be movable up and down, and a push button cover part (30) is coupled to cover the discharge amount control part (50) composed of the push button cover part (30), the push block (51), and the push button (512) in order to protect it, and the upper cover gap male screw (422) is coupled so as to press and fix the reinforcing flange (34) of the push button cover part (30) by passing through the push button cover part (30) with a button cover fixing ring (54).The push block (51) moves up and down as the push button (512) belonging to the discharge volume control unit (50) is pressed up and down, and as the push block (51) moves up and down, the main pressure reducing member (100) is pressed to discharge high-pressure air, which is then reduced in pressure through the discharge pressure reducing member (600) and supplied to the user through the discharge port (29) or stopped from supplying.

[0114] A breathing device according to the second embodiment of the present invention will be described below.

[0115] This describes the pressure reduction situation in the second pressure reduction section (420) after passing through the first pressure reduction section (410), which is the pressure reduction section of the discharge pressure reduction unit (80) in the main pressure reduction member (100) above. In the present invention, the pressure reduction section of the discharge pressure reduction unit (80) is composed of a discharge pressure reduction upper part (810) and a discharge pressure reduction lower part (830). The detailed configuration is a discharge pressure reduction section (470) in which pressure reduction occurs by arriving at the discharge pressure reduction space (270), which is a space composed of the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube, through the discharge pressure reduction 1 gap (370), which is the pressure reduction lower part connection hole (837) in the sixth pressure reduction space (260). It is characterized by being composed of a discharge pressure reduction 2 section (480) in which pressure reduction proceeds by passing through a discharge pressure reduction 2 gap (380), which is a gap formed between a lower circular protruding projection (846) and the inner surface (813) of the upper pressure reduction piece, from a 1st space (270), to a discharge pressure reduction 2 space (280), which is a space formed by a lower circular protruding tube groove (842) and the inner surface (813) of the upper pressure reduction piece.

[0116] This describes the pressure reduction situation arriving at the discharge pressure reduction 2 space (280) in the discharge pressure reduction 1 section (470), which is the pressure reduction section of the discharge pressure reduction unit (80), from the main pressure reduction member (100). In the present invention, the discharge pressure reduction 1 section (470) is a section where further pressure reduction is performed through the discharge pressure reduction unit (80) so that the pressure reduced after passing through the 6th pressure reduction section (460) is convenient for the user to use. The pressure reduction of one stage is completed by passing through the main pressure reduction member (100), which reduces the pressure of the high-pressure filled air inside the high-pressure container (10). It is an expanded space that passes through the 6th gap section (360), which is the gap formed between the lower surface of the nozzle head (126) and the hollow inner wall of the hollow nozzle guide (112), and the lower surface (831) of the discharge pressure reduction lower part (830) of the discharge pressure reduction unit (80) and the discharge pressure reduction member The first stage of pressure reduction is completed by reaching the sixth pressure reduction space (260), which is formed by the space between the lower surface (804) of the installation space (802); for the second stage of pressure reduction, the pressure reduction lower part connecting hole (837), formed by the narrow hole of the discharge pressure reduction lower part (830) of the discharge pressure reduction section (80) in the sixth pressure reduction space (260), acts as a discharge pressure reduction gap (370); passing through the discharge pressure reduction gap (370), the pressure reduction upper part inner surface (813), the pressure reduction upper part inner wall surface (812), the pressure reduction lower part protruding surface (835), and the wall surface (839) of the lower circular protruding tube are formed by reaching the discharge pressure reduction space (270), which is a wide space, and the discharge pressure reduction section (470) is completed, and pressure reduction is achieved in the sixth pressure reduction space (260). It is characterized by being composed of a section in which pressure reduction proceeds as it passes through 1 gap 1 (370) and reaches the expanded space, the discharge pressure reduction 1 space (270).

[0117] This describes the pressure reduction situation reaching the discharge pressure reduction 2 space (280) from the discharge pressure reduction 1 section (470), which is a pressure reduction section of the discharge pressure reduction unit (80). In the present invention, the discharge pressure reduction 2 section (480) is a section where the pressure is further reduced through the discharge pressure reduction unit (80) so that the user can conveniently use the pressure reduced after passing through the discharge pressure reduction 1 section (470). As the second step of the second stage of pressure reduction, the discharge pressure reduction 2 gap (380), which is a gap formed between the lower circular protrusion (846) formed at a narrow interval in the discharge pressure reduction 1 space (270) and the inner surface (813) of the pressure reduction upper piece, passes through the discharge pressure reduction 2 gap (380) and reaches the discharge pressure reduction 2 space (280), which is a space formed by the lower circular protrusion tube groove (842) and the inner surface (813) of the pressure reduction upper piece, thereby completing the discharge pressure reduction 2 section (480). It is characterized by being composed of a section in which pressure reduction proceeds as it passes through the discharge pressure reduction 1 space (270) and the discharge pressure reduction 2 gap (380), and reaches the expanded space, the discharge pressure reduction 2 space (280).

[0118] The process of supplying air is explained as follows: the lower end of the discharge volume control part (50), the push block tip (514), contacts the upper surface of the discharge pressure reduction upper part (810) where the upper air discharge passage (817) of the discharge pressure reduction upper part (810) is formed and pushes downward, the discharge pressure reduction lower part (830) that is in close contact with the bottom of the discharge pressure reduction upper part (810) is pushed downward, and the nozzle head upper surface (128) that is in contact with the lower surface of the discharge pressure reduction lower part (830) is pressed, thereby opening the main pressure reduction member (100) and supplying air. In the present invention, the discharge pressure reduction part (80) is normally connected to an external space at a pressure equal to atmospheric pressure, and is a section where a pressure reduction phenomenon occurs when the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50) and discharges. It is composed of a discharge pressure reduction upper piece (810) installed in the discharge pressure reduction member installation space (802), which is a circular installation space within the internal space, and which is in contact with and interlocks with the tip of the push block (514), which is the lower end of the discharge volume control part (50), and a discharge pressure reduction lower piece (830) installed in the circular installation space within the internal space of the upper cap part (40) and which is in contact with and interlocks with the nozzle head upper surface (128) of the main pressure reduction member (100), wherein the discharge pressure reduction upper piece (810) and the discharge pressure reduction lower piece (830) are configured to be in contact while maintaining airtightness, and the air discharge volume is configured to increase or decrease through the nozzle head upper surface (128) of the main pressure reduction member (100) which is in contact with the lower end of the intermediate discharge pressure reduction part (80) according to the movement of the discharge volume control part (50), and the push block, which is the lower tip of the discharge volume control part (50). The tip (514) contacts the upper surface of the discharge pressure reduction upper piece (810) where the upper air discharge passage (817) of the discharge pressure reduction upper piece (810) is formed and pushes downward, and the discharge pressure reduction lower piece (830) that is in close contact with the bottom of the discharge pressure reduction upper piece (810) is pushed downward, andIt is characterized by being configured such that the upper surface of the nozzle head (128) in contact with the lower surface of the discharge pressure reduction lower piece (830) is pressed, causing the main pressure reduction member (100) to open and discharge high-pressure air. Discharge pressure reduction space 1 (814),

[0119] This is a detailed description of a configuration in which pressure reduction is achieved through a discharge pressure reduction space 1 (270) and a discharge pressure reduction space 2 (280) formed by the discharge pressure reduction upper part (810) and the discharge pressure reduction lower part (830). In the present invention, the discharge pressure reduction unit (80) is installed in a discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap part (40), and is composed of a discharge pressure reduction upper part (810) that is in contact with and linked to the lower end of the discharge amount control unit (50), and a discharge pressure reduction lower part (830) that is installed in the discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap part (40), and is in contact with and linked to the upper surface (128) of the nozzle head of the main pressure reduction member (100). The discharge pressure reduction formed by the discharge pressure reduction upper part (810) and the discharge pressure reduction lower part (830) The device is configured to perform pressure reduction through a first space (270) and a second discharge pressure reduction space (280), and a pressure reduction upper piece O-ring (811) is provided on the outer surface of the discharge pressure reduction upper piece (810). A passage is connected to the discharge port (29) and the discharge passage (27) of the push block (51) in the center of the upper surface of the discharge pressure reduction upper piece (810), and an upper air discharge passage (817) is formed penetrating from the inner surface of the discharge pressure reduction upper piece (810) to the upper surface of the discharge pressure reduction upper piece (810). The inner surface of the discharge pressure reduction upper piece (810) protrudes like two steps from the flat inner surface (813) of the pressure reduction upper piece to form a pressure reduction upper piece middle surface (815) and an upper airtight contact surface (816), and the upper airtight surface, which is the end step surface of the discharge pressure reduction upper piece (810), The contact surface (816) maintains airtightness by contacting the lower airtight contact surface (836) of the discharge pressure reduction lower piece (830), and maintains airtightness by contacting the pressure reduction upper piece intermediate surface (815), which is the intermediate step surface of the discharge pressure reduction upper piece (810), and the pressure reduction lower piece protruding surface (835), which is the protruding surface of the discharge pressure reduction lower piece (830).One or more discharge pressure reduction gaps (370), which are discharge pressure reduction lower part connecting holes (837) connecting the air passage from the lower surface of the discharge pressure reduction lower part (830) to the protruding surface (835) of the discharge pressure reduction lower part, are formed by penetrating, and a discharge pressure reduction space (270) is formed at the point where the discharge pressure reduction space (370), which is the discharge pressure reduction lower part connecting hole (837), ends, and the discharge pressure reduction space (270) is composed of the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube, passing through the discharge pressure reduction space (370), the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, and the protruding surface (835) of the pressure reduction lower part and The discharge pressure reduction 1 space (270), which is a wide space formed by the wall surface (839) of the lower circular protruding tube, is completed by reaching the discharge pressure reduction 1 section (470); the discharge pressure reduction 2 gap (380), which is a gap formed between the lower circular protruding projection (846) formed at a narrow interval in the discharge pressure reduction 1 space (270) and the inner surface (813) of the pressure reduction upper piece, is completed by reaching the discharge pressure reduction 2 space (280), which is a space formed by the lower circular protruding tube groove (842) and the inner surface (813) of the pressure reduction upper piece, and the discharge pressure reduction 2 section (480) is completed by the lower surface (831) of the discharge pressure reduction lower piece (830) is configured to be in contact with and interlocked with the nozzle head upper surface (128) of the main pressure reduction member (100).

[0120] This explains the detailed configurations and operational relationships of the push block (51) of the discharge amount control unit (50). In the present invention, the push block (51) of the discharge amount control unit (50) is composed of a push block upper slide surface (512), a push block body (511), a push block guide unit (518), a push block push rod (516), a horizontal contact surface (515), and a push block tip (514). The push block upper slide surface (512) faces the slide button lower slide surface (522) configured at the bottom of the slide button (52) and slides in response to the forward and backward operation of the slide button (52) to move the push block (51) up and down. The push block upper slide surface (512) faces the slide button lower slide surface (522) configured at the bottom of the slide button (52) and slides in response to the forward and backward operation of the slide button (52) to move the push block (51) up and down. The push block lower slide surface (512) contacts and supports the slide button lower surface (527) formed on the bottom surface of the slide button (52) when the slide button lower slide surface (522) and the push block upper slide surface (512) come into contact at a low position. The device is characterized by comprising: a push block body (511) having a horizontal contact surface (515) of the block (51), a discharge port coupling hole (26) formed horizontally on one side, and a discharge port passage (27) formed vertically in communication with the push block guide part (518), a push block push rod (516), and a push block tip (514) to form a discharge passage (517); a push block guide part (518) whose outer surface is connected to guide the push block (51) by being connected to the inside of the push block guide groove (536); and a push block push rod (516) which is integrally formed at the bottom of the push block guide part (518), is connected to the inside of the push block guide groove (536) so as to be movable up and down by passing through the push block push rod penetration hole (538), and is connected to the bottom by connecting the discharge pressure reducing member (800) to the push block tip (514).

[0121] This explains the detailed configurations and operational relationships of the slide button (52) of the discharge amount control unit (50). In the present invention, the slide button (52) of the discharge amount control unit (50) is composed of a slide button lower slide surface (522), a slide stopper (524), an arc-shaped uneven surface (526'), a horizontal lower surface (527), a plurality of side protrusions (528), and a plurality of locking projections (529). The slide button lower slide surface (522) and the horizontal contact surface (515) formed on the upper surface of the push block (51) are configured at the bottom of the slide button (52), and the slide button lower slide surface (522) slides facing the push block upper slide surface (512) and moves the push block (51) up and down according to the forward and backward operation of the slide button (52). When the slide button lower slide surface (522) and the push block upper slide surface (512) come into contact at a low position, the slide button lower slide surface (522) comes into contact with the lower surface of the slide button (52). A supporting horizontal lower surface (527), a slide stopper (524) formed downward from the lower end of the slide button lower slide surface (522) configured at the lower part of the slide button (52) and in contact with the side wall surface (518) of the upper surface of the push block high slide surface to form the starting position of the slide button (52), an arc-shaped protrusion (526') formed in an arc shape to facilitate pushing and pulling by hand to slide the slide button (52), a slide button side coupling projection (394') and a slide button side tension coupling projection (396) formed in a row on the inner surface of the slide button coupling hole (392') of the slide button cover part (30') of the slide button cover part (30') and coupled to the groove between the side multiple protrusions (528) to facilitate sliding the slide button (52), and a slide button lower The slide surface (522) slides in contact with the upper slide surface (512) of the push block (51) and presses the push block (51), thereby discharging high-pressure air.It is characterized by being composed of a plurality of locking protrusions (529) formed so that when the push block (51) is pulled and moves upward to lock the high-pressure air, the slide button side tension coupling protrusion (396) strikes the side of the slide button (52) and makes a sound, thereby allowing the user to recognize the sensation of operation.

[0122] The purpose is to explain the detailed configurations and operational relationships of the push block guide (53) of the discharge volume control unit (50). The operating principle is to operate by achieving a balance of forces through the force pressing the discharge volume control unit (50) and the internal pressure (10ap) of the container pushing the nozzle member (120). The push block push rod spring (516S) raises the discharge volume control unit (50) to provide a clearance gap during the air discharge operation in which the discharge volume control unit (50) presses the nozzle member (120) through the discharge pressure reducing member (800). In the present invention, the push block guide (53) of the discharge volume control unit (50) comprises a push block guide groove (536) to which the outer surface of the push block guide (518) contacts and is coupled to guide the push block (51), and a push block push rod (516) to which it passes through and is coupled inside the push block guide groove (536). A through hole (538), a cone-shaped push block push rod spring (516S) formed on the outer surface of a push block push rod (516) that is secured and coupled between the lower end of a push block guide (518) and the inner surface of a push block guide groove (536), and installed so as to be maintained at a certain distance so that the nozzle member (120) is not pressed when the push block tip (514) of the push block (51) does not supply air and does not press the discharge pressure reducing member (800); a push block push rod circular guide (539) formed extending from the lower end of the push block push rod through hole (538) that guides the push block push rod (516) when it moves up and down; a push block guide fixing bolt hole (532) for fixing the push block guide (53) to the upper part of the upper cap part (40) with a bolt; and coupling groove position indicators (534') formed on both side corners of the push block guide fixing bolt hole (532). The pressure indicator member (700) is screw-coupled to the upper cap portion (40), and is characterized by being composed of a pressure indicator member coupling groove (535) in which the pressure indicator surface (710) of the pressure indicator member (700) protrudes.

[0123] The pressure displayed on the pressure display surface (710) of the pressure display member (700) is the internal pressure of the high-pressure vessel (10ap) or another expression, the internal pressure of the high-pressure vessel (10ap).

[0124] The slide button cover portion (30') of the discharge volume control portion (50) is configured to protect the discharge volume control portion (50). The detailed configurations and operational relationships of the slide button cover portion (30') are explained as follows: In the present invention, the slide button cover portion (30') of the discharge volume control portion (50) is composed of a slide button coupling hole (392'), a reinforcing flange (34), a coupling projection (36), a slide button side coupling projection (394'), and a slide button side tension coupling projection (396). The slide button (52) and the push block (51), which are coupled to and supported by the slide button cover portion (30'), are interconnected and operated. A slide button coupling hole (392') is provided in the central part of the slide button cover portion (30'), through which the slide button (52) slides from the side direction of the slide button cover portion (30') to the other side direction to be coupled. When the slide button (52) moves back and forth, the slide button Guide so that the slide button (52) does not deviate from the coupling hole (392'), and the coupling projection groove (426) of the upper cap part (40), to which the coupling projection (36) formed on the lower part of the slide button cover (39') is coupled to the groove formed on the corner of the upper cap part (40) on both sides of the guide fixing bolt hole (532), and a reinforcing flange (34) is formed at the bottom of the slide button cover part (30'), so that the reinforcing flange (34) engages with the inner projection (542) for fixing the button cover of the button cover fixing ring (54) that fixes the slide button cover part (30'), so that the button cover fixing ring (54) is rotated so that the button cover fixing ring fixing female screw (544) and the button cover fixing ring fixing male screw (424) are coupled and fixed.A plurality of side protrusions (528) configured such that a slide button side coupling projection (394') and a slide button side tension coupling projection (396), formed in a row on the inner surface of the slide button coupling hole (392') of the slide button cover (39') of the slide button cover part (30'), are coupled to a groove between the plurality of side protrusions (528) to facilitate sliding the slide button (52); and when the slide button (52) is slid, the lower slide surface (522) of the slide button contacts the upper slide surface (512) of the push block (51) and slides to press the push block (51), thereby depressurizing and discharging high-pressure air, and when pulled, the push block (51) moves upward to lock the high-pressure air, at which point the slide button side tension coupling projection (396) on the side of the slide button (52) passes over and collides with the plurality of locking projections (529), producing a sound so that the user recognizes the sensation of operation. It is characterized by being composed of a stopper projection (529).

[0125] The assembly sequence of the components of a portable refillable air breathing apparatus for evacuation purposes, which has a built-in multi-stage depressurization structure, is as follows: a bottom upper sealing ring (15c) and a bottom lower sealing ring (15d) are fitted onto a bottom filling cover member (600) in a high-pressure container (10) in which a donut-shaped reinforcing flange (12) with a hollow center is formed inside the high-pressure container (10); the bottom filling cover coupling screw (604) is screw-coupled to the container lower female screw (16) of the high-pressure container (10); the main depressurization member (100) and the discharge depressurization member (800) are coupled to the upper cap part (40); the container upper ring (15a) and the container upper ring (15b) are coupled; the container upper female screw (14) of the high-pressure container (10) is screw-coupled to the upper cap male screw (422); and on the coupled upper cap part (40) A pressure indicator (700) is screw-coupled, and an internal partition flange (41) protruding inwardly is formed to partition the main pressure reducing member coupling hole (432) and the discharge pressure reducing member coupling hole (433) inside the upper cap part (40), and a main pressure reducing member (100) is screw-coupled to the main pressure reducing member coupling hole (432) from the lower direction to the upper direction of the upper cap part (40), and the discharge pressure reducing member (800) is inserted and coupled to the discharge pressure reducing member coupling hole (433) from the upper direction to the lower direction of the upper cap part (40), and a pressure indicator (700) is screw-coupled to the pressure indicator member coupling hole (434) from the upper direction to the lower direction of the upper cap part (40), and a push block guide (53) is coupled so that the pressure indicator (700) is inserted into the pressure indicator member coupling groove (535) of the upper cap part (40), and the push block A push block (51) is inserted and coupled to the guide (53) so as to be movable up and down, and a slide button cover part (30') is coupled to cover the discharge amount control part (50) composed of the slide button cover part (30'), the push block (51), and the slide button (52) to protect it, and the upper cover gap male screw (422) is coupled so as to press and fix the reinforcing flange (34) of the slide button cover part (30') by passing the slide button cover part (30') with a button cover fixing ring (54).The push block (51) moves up and down according to the pushing and pulling sliding of the slide button (52) belonging to the discharge volume control unit (50), and as the push block (51) moves up and down, the main pressure reducing member (100) is pressed to discharge high-pressure air, which is then depressurized through the discharge pressure reducing member (800) and supplied to the user through the discharge port (29) or stopped from supplying.

[0126] As another embodiment, since there is a need to ensure greater repeatability in order to repeat the operation of continuously discharging air by adjusting the discharge amount through the sliding motion of the slide button (52), the configuration shown in FIG. 22 is to be implemented as another embodiment by using the configuration of the tension catch piece (521), which is a metal piece having elasticity as shown in FIG. 23 and FIG. 24. In the present invention, the slide button (52) of the discharge amount control unit (50) is composed of a slide button lower slide surface (522), a slide stopper (524), an arc-shaped irregularity (526'), a flat lower surface (527), a plurality of side protrusions (528), and a plurality of catch projections (529). The slide button lower surface is configured at the bottom of the slide button (52) and, depending on the forward and backward operation of the slide button (52), the slide surface slides facing the upper slide surface (512) of the push block to move the push block (51) up and down. A slide surface (522), a horizontal contact surface (515) formed on the upper surface of the push block (51), a horizontal lower surface (527) that contacts and supports the lower surface of the slide button (52) when the slide button lower slide surface (522) and the push block upper slide surface (512) come into contact at a low position, a slide stopper (524) formed downward from the lower slide surface end of the slide button lower slide surface (522) configured at the bottom of the slide button (52), and formed at the starting position of the slide button (52) by contacting the side wall surface (518) of the push block upper high slide surface, and an arc-shaped protrusion (526') formed in an arc shape to facilitate pushing and pulling by hand to slide the slide button (52),A slide button side coupling projection (395) formed on the inner surface of the slide button coupling hole (392') of the slide button cover (39') of the slide button cover part (30') and a continuous locking projection (397) formed on the side of the slide button side coupling projection (395) are coupled to a groove between the side plurality of protrusions (528) to facilitate sliding the slide button (52); and when the slide button (52) is slid and the slide button lower slide surface (522) slides in contact with the push block upper slide surface (512) of the push block (51) to press the push block (51) and discharge high-pressure air, and when pulled, the push block (51) moves upward to perform an operation in which the high-pressure air is locked, a tension coupling piece (525) is inserted and coupled into a tension coupling groove (527') formed in the groove between the side of the slide button (52) and the side plurality of protrusions (528). The tension locking projection (523) formed on the tension locking piece (521) is characterized by being composed of a continuous locking projection (397) formed so that the user can perceive the sensation of operation by making a sound when it strikes the continuous locking projection (397) formed on the side of the slide button side coupling projection (395).

[0127] In the present invention, the slide button cover portion (30') of the discharge amount control portion (50) is composed of a slide button coupling hole (392'), a reinforcing flange (34), a coupling projection (36), a slide button side coupling projection (395), and a continuous locking projection (397) formed on the side of the slide button side coupling projection (395). The slide button (52) and the push block (51), which are coupled to and supported by the slide button cover portion (30'), are interconnected and operated. A slide button coupling hole (392') is provided in the center of the slide button cover portion (30') so that the slide button (52) slides from the side direction of the slide button cover portion (30') to the other side direction to be coupled. A push block guide is provided to guide the slide button (52) so that it does not deviate from the slide button coupling hole (392') when the slide button (52) moves back and forth, and to fix the push block guide (53) to the upper part of the upper cap portion (40) with a bolt. A connecting projection groove (426) of the upper cap portion (40) to which a connecting projection (36) formed on the lower part of the slide button cover (39') is connected to a groove formed at the corner of the upper cap portion (40) on both sides of the fixing bolt hole (532), and a reinforcing flange (34) is formed at the bottom of the slide button cover portion (30'), so that the reinforcing flange (34) engages with the inner projection (542) for fixing the button cover of the button cover fixing ring (54), and the button cover fixing ring (54) is rotated so that the button cover fixing ring fixing female screw (544) and the button cover fixing ring fixing male screw (424) are connected and fixed, and a slide button side connecting projection (395) formed on both inner sides of the slide button connecting hole (392') of the slide button cover (39') of the slide button cover portion (30') and a continuous locking projection (397) formed on the side of the slide button side connecting projection (395) areA tension coupling piece (525) is inserted into two tension coupling grooves (527') formed in the grooves between the multiple side protrusions (528) on both sides of the slide button (52), and a tension locking projection (523) formed on a tension locking piece (521) is coupled thereto to facilitate sliding the slide button (52), and when the slide button (52) is slid, the lower slide surface (522) of the slide button contacts the upper slide surface (512) of the push block (51) and slides to press the push block (51), thereby depressurizing and discharging high-pressure air, and when the push block (51) moves upward when pulled to perform the action of locking the high-pressure air, the tension locking projection (523) of the tension locking piece (521) formed on the side of the slide button (52) and the continuous projection (523) formed on the side of the slide button side coupling piece (395) It is characterized by being composed of a continuous stopper (397) formed so that the user can perceive the sensation of operation by making a sound as it passes over and collides with the stopper (397).

Claims

1. In an air breathing apparatus for life rescue purposes, A cylindrical high-pressure container (10) that stores air containing oxygen for breathing by filling it at high pressure, and A bottom filling cover part (60) for filling the inside of the high-pressure container (10) from the bottom, which is assembled at the bottom of the high-pressure container (10) and has its bottom sealed with a cover to safely contain the high-pressure air filled inside the high-pressure container (10), and a bottom filling cover part (60) for filling the inside of the high-pressure container (10) from the bottom, It includes an upper cap portion (40) assembled on the upper part of the above high-pressure vessel (10), and Inside the upper cap portion (40), A main pressure reduction unit (90) that reduces the pressure of the high-pressure air inside the high-pressure container (10) in multiple stages to reduce the pressure to a range usable by the user, and A discharge pressure reduction unit (80) that further reduces the pressure of the air discharged after being depressurized through the main pressure reduction unit (90) to a pressure suitable for use by the user, and It is composed of a pressure display unit (70) that displays the internal pressure (10ap) of the high-pressure container filled in the interior (10a) of the high-pressure container (10), and On the upper part of the upper cap portion (40) and the discharge pressure reduction portion (80), When an operator presses a push button (512) with a finger to supply an appropriate amount of air, the high-pressure air inside the high-pressure container (10) passes through a main pressure reduction section (90), is reduced in pressure and discharged, and passes through a discharge pressure reduction section (80) that is reduced in pressure again, and a discharge amount control section (50) configured to supply air while adjusting the discharge amount in proportion to the operating displacement of the operator pressing the push button (512) with a finger, and A push button cover part (30) configured to protect the discharge amount control part (50) and to support and guide the push button (512), and It includes a lid (31) that covers the above-mentioned push button cover portion (30) and protects the above-mentioned discharge amount control portion (50) from contamination by foreign substances, The upper cap portion (40) is configured to be coupled to the upper part of a cylindrical high-pressure container (10) to withstand the internal pressure (10ap) of the high-pressure container, and the upper cap portion (40) to be coupled is equipped with the main pressure reducing portion (90), the discharge pressure reducing portion (80), and the pressure display portion (70). The lower part of the main pressure reducing unit (90) is connected to the inside of the high-pressure container (10), and the upper part is connected to the discharge pressure reducing unit (80). The above discharge pressure reduction unit (80) is configured to press the discharge pressure reduction unit (80) according to the up-and-down movement of the discharge amount control unit (50), and to press the main pressure reduction unit (90) which is in contact with and linked to the discharge pressure reduction unit (80) so that air is discharged. A portable inflatable air breathing device for rescue and evacuation purposes with a built-in multi-stage pressure reduction structure, characterized in that the pressure display part (70) is connected through the pressure gauge coupling hole (47) of the upper cap part (40) formed to communicate inside the high-pressure container (10), and the pressure transmitted through the pressure transmission micro-hole (474) is displayed on the pressure display surface (710) through the pressure gauge flow hole (722).

2. In Paragraph 1, The upper seal of the high-pressure container (10) is formed by a female screw (14) on the upper inner surface of the high-pressure container (10) and coupled with a male screw (422) on the upper cap part (40). Above the upper cap portion male screw (422) formed thereon, the upper cap container upper sealing ring (15a) is fitted into the upper cap container upper sealing ring groove (15ah), which is the outer circumference groove of the upper cap portion (40). On the lower side where the upper cap part male screw (422) is formed, the upper cap container lower sealing ring (15b) is fitted into the upper cap container lower sealing ring groove (15bh), which is the outer circumference groove of the upper cap part (40), to maintain airtightness. The seal of the lower part of the high-pressure container (10) is formed by a lower female screw (15) formed on the lower inner surface of the high-pressure container (10) and coupled with a bottom filling cover coupling screw (604) formed on the outer surface of the bottom filling cover part (60). Above the bottom cover connecting screw (604) formed, a container bottom upper sealing ring (15c) is fitted into the container bottom upper sealing ring groove (15ch), which is the outer circumference groove of the bottom filling cover part (60). On the lower side where the bottom cover coupling screw (604) is formed, the container bottom sealing ring (15d) is fitted into the container bottom sealing ring groove (15dh), which is the outer circumference groove of the bottom filling cover part (60), to maintain airtightness. The reinforcing means of the high-pressure vessel (10) is formed to protrude inwardly from the inner wall surface of the central part of the interior, and is configured to protrude in a circular shape into the interior of the high-pressure vessel (10) to prevent shape deformation in which the central part of the high-pressure vessel (10) swells due to the internal pressure of the air filled with high pressure. A reinforcing means is provided to improve durability by reinforcing the high-pressure container (10) to respond to increasing pressure, wherein a reinforcing flange (12) having a hole formed in the center to allow high-pressure filled air to pass through is one or multiple as the pressure of the high-pressure filled air increases. A portable inflatable air breathing apparatus for rescue and evacuation purposes, characterized by having a built-in multi-stage pressure reduction structure formed by machining a homogeneous material in the shape of a metal rod to withstand high air pressure.

3. In Paragraph 1, A plurality of external reinforcing protrusions (13) are formed at regular intervals on the outside of the high-pressure vessel (10) to reinforce the high-pressure vessel (10) so as to be safe even under increasing pressure, thereby improving durability, or Alternatively, the thickness of the high-pressure vessel (10) is formed with sufficient thickness, and a portion is cut off to retain multiple external reinforcing protrusions (13), thereby reinforcing the high-pressure vessel (10) to ensure safety even under increasing pressure and improving durability. Due to the bottom filling cover part (60) assembled at the bottom of the high-pressure container (10) and the upper cap part (40) assembled at the top of the high-pressure container (10), cutting is performed to form the upper female screw (14) and the lower female screw (16) of the high-pressure container (10), so the high-pressure container (10) becomes vulnerable to pressure, and there is a limitation on the installation position of the reinforcing flange (12) due to the assembly location. A portable inflatable air breathing device for life rescue and evacuation purposes, characterized by having a multi-stage pressure reduction structure built into the exterior of the high-pressure container (10), wherein multiple external reinforcing protrusions (13) are dispersed on the exterior.

4. In Paragraph 1, A bottom filling cover portion (60) is assembled by screw coupling with a bottom female screw (16) formed on the bottom of the high-pressure container (10) and a bottom filling cover coupling screw (604) formed on the outer circumference of the bottom filling cover portion (60). The structure in which the bottom filling cover part (60) is engaged with the lower edge of the high-pressure container (10) to withstand high internal pressure is such that the container bottom connecting projection (18) protruding downward from the lower edge of the high-pressure container (10) is coupled with the bottom filling cover connecting projection groove (608) of the bottom filling cover part (60). The container bottom joining surface (19) formed on the lower edge of the high-pressure container (10) contacts the bottom filling cover joining surface (609) of the bottom filling cover part (60), and the container bottom coupling projection (18) formed on the lower edge of the high-pressure container (10) is coupled with the bottom filling cover coupling projection groove (608) of the bottom filling cover part (60), so that when the high-pressure container (10) swells and deforms due to the high internal pressure, the bottom filling cover restraining projection (607) restrains the container bottom coupling projection (18) to withstand the high internal pressure. An upper cap portion (40) is assembled on the upper part of the high-pressure container (10) by screw coupling with a female screw (14) formed on the upper part of the high-pressure container (10) and a male screw (422) formed on the outer circumference of the upper cap portion (40). The structure in which the upper cap portion (40) is engaged with the upper edge of the high-pressure container (10) to withstand high internal pressure is such that the upper container coupling projection (16) protruding upward from the upper edge of the high-pressure container (10) is coupled with the upper cap portion coupling projection groove (412) of the upper cap portion (40). A portable inflatable air breathing device for rescue and evacuation purposes with a built-in multi-stage depressurization structure, characterized in that the upper container joint surface (17) formed on the upper edge of the high-pressure container (10) contacts the upper cap joint surface (414) of the upper cap part (40), and the upper container coupling projection (16) formed on the upper edge of the high-pressure container (10) is coupled to the upper cap part coupling projection groove (412) of the upper cap part (40), so that when the high-pressure container (10) swells and deforms due to the high internal pressure, the upper cap part restraining projection (413) restrains the upper container joint projection (16) to withstand the high internal pressure.

5. In Paragraph 1, The above discharge amount control unit (50) is, A portable refillable air breathing device for life rescue and evacuation purposes, characterized by comprising a push block (51), a push button (512), a push block guide (53), and a push button cover part (30), wherein the above-mentioned push button (512) is adjusted to guide the push block guide (53) and the push block (51) is moved up and down to press the nozzle member (120) of the main pressure reducing member (100) up and down so that air containing oxygen is supplied to the user through the air discharge hole (519).

6. In Paragraph 1, The above discharge pressure reduction unit (80) is Normally exposed to the external space at a pressure equal to atmospheric pressure, and when high-pressure air is discharged while the nozzle head (126) of the nozzle member (120) belonging to the main pressure reduction section (90) is pressed downward due to the discharge pressure reduction section (80) in contact with the discharge amount control section (50), it is a section where pressure reduction occurs again after passing through the section where the pressure reduction phenomenon of the main pressure reduction section (90) occurs. A discharge pressure reducing upper piece (810) that is installed in a circular installation space, which is the internal space of the upper cap part (40), and is connected to the lower end of the push block (58) of the discharge amount control part (50), and It is installed in contact with the lower part of the discharge pressure reduction upper piece (810) in the discharge pressure reduction member installation hole (802), which is a circular installation space within the upper cap part (40), and is configured with a discharge pressure reduction lower piece (830) that is in contact with and linked to the nozzle head upper surface (128) of the main pressure reduction part (90), and is exposed to the external space at a pressure equal to atmospheric pressure, and then, when the push button (512) is pressed, the main pressure reduction part (90) performs pressure reduction again after pressure reduction occurs. A portable inflatable air breathing device for life rescue and evacuation purposes, characterized by having a multi-stage pressure reduction structure built in, comprising a discharge pressure reduction upper section (810) and a discharge pressure reduction lower section (830) to form a discharge pressure reduction 1 section (470) and a discharge pressure reduction 2 section (480).

7. In Paragraph 1, The above main pressure reduction unit (90) is, A cylindrical high-pressure container (10) is coupled to the upper part of the high-pressure container and configured to withstand the internal pressure (10ap) of the high-pressure container, and a discharge pressure reducing part (80) and a pressure display part (70) are provided inside the sealed cap part (40), and the main pressure reducing member installation space (102) is coupled thereto. The lower part of the main pressure reducing unit (90) is connected to the inside of the high-pressure container (10), and the upper part is connected to the discharge pressure reducing unit (80). The discharge pressure reduction unit (80) is configured to move up and down in accordance with the up and down movement of the discharge amount control unit (50) push button (512), and to move up and down in conjunction with the nozzle member (120) of the main pressure reduction unit (90) that contacts and moves with the discharge pressure reduction unit (80), so that air is discharged, discharge is reduced, or discharge is locked. A portable refillable air breathing device for rescue and evacuation purposes, having a built-in multi-stage depressurization structure characterized by depressurizing the air inside a high-pressure container (10) containing high-pressure oxygen in multiple stages.

8. In Paragraph 1, The above main pressure reduction unit (90) is in contact with and linked to the lower part of the discharge pressure reduction unit (80), which is in contact with and linked to the discharge amount control unit (50) according to the up and down movement of the push button (512). A nozzle member (120) coupled to the upper part of a movable nozzle member (130) that is pushed upward by the internal space pressure (222p) of depressurized air filled in the internal space (222) of a movable nozzle member (130) and a nozzle guide member (110) that guides the movable nozzle member (130), and which is capable of vertical movement and is pushed upward by the internal space pressure (222p) of the movable nozzle member (130). A movable nozzle member (130) coupled to be able to move back and forth according to the control of the discharge amount control part (50) inside the nozzle guide member (110), and It is composed of a locking pressure regulating pressure reducing member (140) that combines with the nozzle guide member (110), adjusts the locking pressure by rotating a screw, restrains and combines the nozzle guide member (110) to reduce the pressure of high-pressure air containing oxygen, and A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage pressure reduction structure, characterized in that a nozzle member (120) and a movable nozzle member (130) are movably housed in the internal space formed by the nozzle guide member (110) and the pressure regulating pressure reduction member (140) according to the control of the discharge volume control unit (50), so that the amount of air discharged is proportional to the distance traveled by the discharge volume control unit (50).

9. In Paragraph 1, The above main pressure reduction unit (90) refers to the main pressure reduction member (100), and The above main pressure reducing member (100) is composed of a plurality of pressure reducing sections (400), and The first pressure reduction section (410) is composed of a first gap section (310) and a first pressure reduction space section (210), and The second pressure reduction section (420) is composed of a second gap section (320) and a second pressure reduction space section (220), and The third pressure reduction section (430) is composed of a third gap section (330) and a third pressure reduction space section (230), and The fourth pressure reduction section (440) is composed of a fourth gap section (340) and a fourth pressure reduction space section (240), and The fifth pressure reduction section (450) is composed of a fifth gap section (350) and a fifth pressure reduction space section (250). The sixth pressure reduction section (460) is composed of the sixth gap section (360) and the sixth pressure reduction space section (260), and It is composed of an air supply unit (50) that supplies depressurized air to the user so that the pressure of the high-pressure air filled inside the high-pressure container (10) is gradually reduced in sequential sections to allow the user to breathe comfortably. A portable inflatable air breathing apparatus for life rescue and evacuation purposes, having a built-in multi-stage decompression structure characterized in that each of the above decompression sections can perform decompression by omitting the space portion of the corresponding section.

10. In Paragraph 9, When the push button (512) of the discharge volume control unit (50) is not operated and is in a standby state, the first to third pressure reduction sections (410) to the third pressure reduction section (430) are equal to the internal pressure of the high-pressure container (10), and the fourth to sixth pressure reduction sections (440) to the sixth pressure reduction sections (460), which are sections behind the locked sealing projection (132) and the sealing member 2 (118), are equal to the atmospheric pressure. A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage pressure reduction structure, characterized in that when the push button (512) of the discharge volume control unit (50) is operated, the pressure is gradually reduced from the internal pressure of the high-pressure container (10) to the first pressure reduction section (410) to the sixth pressure reduction section (460), and is supplied to the user by passing between the open sealing projection (132) and the sealing member 2 (118).

11. In Paragraph 9, The above first depressurization section is a section where the high-pressure air filled inside the high-pressure container (10) is first depressurized. High-pressure air filled inside the high-pressure container (10) flows through the first gap section (310), which is a narrow space, and pressure reduction proceeds. It is composed of a first gap section (310) and a first pressure reduction space section (210), and The first gap portion (310) is combined with a gap female screw (142) formed inside the cylindrical main pressure reducing member installation space (102) inside the upper cap portion (40) and a gap male screw (144) formed on the outside of the locking pressure adjusting pressure reducing member (140), High-pressure air is configured to flow through the gap between the threads and grooves formed by the gap female screw (142) and the gap male screw (144), and The first pressure reduction space (210) is formed by passing through the gap female screw (142) formed inside the cylindrical main pressure reduction member installation space (102) inside the upper cap part (40) at the point where the path of the first gap part (310) ends, and the space where the gap female screw (142) is omitted, and It is configured as a space formed by passing through a gap screw (144) formed on the outer side of a locking pressure regulating pressure reducing member (140) and omitting the gap screw (144), and The gap between the outer surface of the nozzle guide member (110) and the inner wall of the main pressure reducing member (100) installation space inside the upper cap part (40) is sealed through the sealing member 1 (116), and A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage depressurization structure, characterized by being configured as a section in which depressurization proceeds by passing through a first gap section (310) inside the high-pressure container (10) and reaching a first depressurization space section (210), which is a space having an expanded cross-sectional area.

12. In Paragraph 9, The above-mentioned second depressurization section is a section in which the pressure reduced after passing through the first depressurization section is further reduced. The high-pressure filled air inside the high-pressure container (10) flows through a narrow space and the air undergoing depressurization reaches the first depressurization space (210), passes through the second gap section (320) from the first depressurization space (210) and reaches the second depressurization space (220), which is an expanded space, and is composed of the second gap section (320) and the second depressurization space (220). The second gap portion (320) forms a gap through hole (322) that penetrates from the outer surface to the inner surface of the locking pressure regulating pressure reducing member (140) forming the first pressure reducing space portion (210) to form a gap, and A gap (324) between the outer surface of the nozzle guide member (110) and the inner surface of the locking pressure adjustment pressure reducing member (140) is formed, and The second pressure reduction space (220) is composed of an inner space (222) in which the interior of the movable nozzle member (130) is ground and the path of the second gap section (320) ends and the space expands, an intermediate space 2 (226) which is the remaining space after the movable nozzle member (130) is coupled to the nozzle guide member (110), and an intermediate space 1 (224) between the nozzle guide member (110), the rear end, and the locking pressure control pressure reduction member (140). A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage decompression structure characterized by being composed of a section in which decompression proceeds as it passes through a second gap section (320) from a first decompression space (210) and reaches a second decompression space (220), which is an expanded space.

13. In Paragraph 9, The above-mentioned third pressure reduction section is a section in which the pressure reduced after passing through the second pressure reduction section is further reduced to make it convenient for the user to use. High-pressure air filled inside the high-pressure container (10) passes through a narrow space and reaches a second depressurization space (220), which is an expanded space, and depressurization proceeds. It is composed of a second pressure reduction space (220) through a third gap section (330) and a third pressure reduction space (230), through which pressure reduction proceeds as it passes through the second pressure reduction space (220) and reaches the third pressure reduction space (230), which is an expanded space. The third gap portion (330) is formed as a gap between the inner surface of the nozzle guide member (110) and the lower outer surface (134) of the movable nozzle member (130), through which high-pressure air existing in the second depressurization space portion (220) passes. The third depressurization space (230) is where the path of the third gap section (330) ends and the space expands, It is composed of an outer cutting surface (136) formed on the central outer surface of the movable nozzle member (130) and a space formed between the inner surface of the nozzle guide member (110). A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage decompression structure characterized by being composed of a section in which decompression proceeds from a second decompression space (220), through a third gap section (330), and reaching a third decompression space (230), which is an expanded space.

14. In Paragraph 9, The above-mentioned fourth pressure reduction section is a section in which the pressure reduced after passing through the third pressure reduction section is further reduced to make it convenient for the user to use. High-pressure air filled inside the high-pressure container (10) passes through a narrow space and reaches a third depressurization space (230), which is an expanded space, and depressurization proceeds. It is composed of a third pressure reduction space (230), a fourth gap section (340), and a fourth pressure reduction space (240), wherein pressure reduction proceeds as it passes through the fourth gap section (340) from the third pressure reduction space (230) and reaches the fourth pressure reduction space (240), which is an expanded space. The above-mentioned fourth gap section (340) comprises an upper gap (342) between the inner surface of the nozzle guide member (110) and the upper outer surface (134) of the movable nozzle member (130), through which high-pressure air existing in the third depressurization space section (230) passes, and A circular sealing member 2 (118) formed at the front end of the inner hole of the nozzle guide member (110) and a circular sealing projection (132) formed on the front surface of the movable nozzle member (130) are in close contact with each other to maintain airtightness of the high-pressure filled air inside the high-pressure container (10), and an upper surface protrusion gap (344) formed therein, and It is formed as an upper gap (345) which is the gap between the lower surface of the sealing member 2 (118) and the upper surface (139) of the movable nozzle member (130), and When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the sealing member 2 (118) and the sealing projection (132) increases according to the distance of pressing, so the discharged air increases, and when it moves upward, the gap between the sealing member 2 (118) and the sealing projection (132) decreases, so the discharged air decreases, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged. The fourth depressurization space (240) is composed of a space formed by a wall surface formed along the circumference of the lower outer surface of the nozzle member (120), where the path of the fourth gap section (330) ends and the space expands, an upper surface (139) of the movable nozzle member, a lower surface (115) of the nozzle taper stem hole, and one side surface of the sealing member 2 (118). A portable inflatable air breathing device for rescue and evacuation purposes, having a built-in multi-stage decompression structure, characterized by being composed of a section in which decompression proceeds from the third decompression space (230) through the fourth gap section (330) and reaches the fourth decompression space (240), which is an expanded space.

15. In Paragraph 9, The above-mentioned fifth pressure reduction section is a section in which the pressure reduced after passing through the fourth pressure reduction section is further reduced so that it is convenient for the user to use. High-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the fourth pressure reduction section (240), which is an expanded space, and the pressure reduction proceeds. It is composed of a fourth pressure reduction space (240), a fifth gap section (350), and a fifth pressure reduction space (250), wherein pressure reduction proceeds as it passes through the fifth gap section (350) from the fourth pressure reduction space (240) and reaches the fifth pressure reduction space (250), which is an expanded space. The above-mentioned fifth gap portion (350) is formed by a taper stem gap (346) which is a gap formed between the nozzle taper stem (124) of the nozzle member (120) formed as a single body at the tip of the movable nozzle member (130), through which high-pressure air existing in the fourth depressurization space portion (240) passes, and the nozzle taper stem groove (114) formed by the inner surface of the hollow nozzle guide (112) of the nozzle guide member (110). When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the discharged air, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged. The fifth pressure reduction space (250) is composed of a space formed between the inner surface of a hollow nozzle guide (112) and a circumferential groove (122) of a nozzle machined along the circumference at the center of the outer circumferential surface of the nozzle member (120), where the path of the fifth gap section (350) ends and the space expands. A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage decompression structure characterized by being composed of a section in which decompression proceeds from the fourth decompression space (240) through the fifth gap section (350) and reaches the fifth decompression space (250), which is an expanded space.

16. In Paragraph 9, The above-mentioned 6th pressure reduction section is a section in which the pressure reduced after passing through the 5th pressure reduction section is further reduced to make it convenient for the user to use. High-pressure air filled inside the high-pressure container (10) passes through a narrow space and reaches the fifth depressurization space (250), which is an expanded space, and depressurization proceeds. Pressure reduction proceeds as it passes through the 6th gap section (360) from the 5th pressure reduction space section (250) and reaches the 6th pressure reduction space section (260), which is an expanded space, and is composed of the 5th pressure reduction space section (250), the 6th gap section (360), and the 6th pressure reduction space section (260). The above-mentioned sixth gap section (360) is composed of a gap formed between the hollow inner surface of a hollow nozzle guide (112) and a cylindrical nozzle head (126) in a nozzle guide member (110) through which high-pressure air existing in the fifth depressurization space section (250) passes, and When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the discharged air, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged. The sixth pressure reduction space (260) is composed of a space formed by the lower surface (435) of the discharge pressure reduction member coupling hole (433), which is a circular installation space within the upper cap part (40) where the discharge pressure reduction member (80) is installed and the nozzle head (126), which is the tip of the nozzle member (120), protrudes and the path of the sixth gap part (360) ends and the space expands, and the lower surface (831) of the discharge pressure reduction lower piece, which is the lower surface of the discharge pressure reduction member coupling hole (433) and the discharge pressure reduction member (800). A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage decompression structure characterized by being composed of a section in which decompression proceeds from the fifth decompression space (250) through the sixth gap section (360) and reaches the sixth decompression space (260), which is an expanded space.

17. In Paragraph 9, The pressure reduction section of the above discharge pressure reduction unit (80) is composed of a discharge pressure reduction upper part (810) and a discharge pressure reduction lower part (830), and the detailed configuration is a discharge pressure reduction 1 section (470) in which pressure reduction is performed by arriving at the discharge pressure reduction space 1 (270), which is a space composed of the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube, through the discharge pressure reduction gap 1 (370), which is a pressure reduction lower part connection hole (837) from the 6th pressure reduction space unit (260), and pressure reduction is performed therein, and passing through the discharge pressure reduction gap 2 (380), which is a gap formed between the lower circular protruding projection (846) and the inner surface (813) of the pressure reduction upper part from the discharge pressure reduction space 1 (270), and the lower circular protruding tube groove (842) and A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage decompression structure, characterized by being composed of a discharge decompression 2 section (480) in which decompression proceeds as it arrives at a discharge decompression space 2 (280), which is a space formed by the inner surface (813) of the decompression upper section.

18. In Paragraph 17, The above discharge pressure reduction section 1 (470) is a section where pressure is further reduced through the discharge pressure reduction unit (80) so that the user can conveniently use the pressure reduced after passing through the 6th pressure reduction section (460). The first stage of pressure reduction is completed by passing through the main pressure reduction member (100) that reduces high-pressure filled air inside the high-pressure container (10). The pressure reduction is completed by passing through the 6th gap section (360), which is an expanded space formed by the gap between the lower surface of the nozzle head (126) and the hollow inner wall of the hollow nozzle guide (112), and reaching the 6th pressure reduction space section (260), which is the space between the lower surface (831) of the discharge pressure reduction lower part (830) of the discharge pressure reduction unit (80) and the lower surface (804) of the discharge pressure reduction member installation space (802). For the second stage of pressure reduction, discharge from the 6th pressure reduction space section (260) A portable inflatable air breathing device for life rescue and evacuation with a built-in multi-stage depressurization structure, characterized in that the depressurization lower part connecting hole (837), formed by a narrow hole of the depressurization lower part (830) of the depressurization section (80), acts as a depressurization gap 1 (370), passes through the depressurization gap 1 (370) and reaches a depressurization space 1 (270), which is a wide space formed by the inner surface (813) of the depressurization upper part, the inner wall surface (812) of the depressurization upper part, the protruding surface (835) of the depressurization lower part, and the wall surface (839) of the lower circular protruding tube, thereby completing the depressurization 1 section (470) and performing depressurization, and is configured as a section in which depressurization proceeds by passing through the depressurization gap 1 (370) in the 6th depressurization space section (260) and reaching the expanded space of the depressurization 1 section (270).

19. In Paragraph 17, The above discharge pressure reduction section 2 (480) is a section in which further pressure reduction is performed through the discharge pressure reduction unit (80) so that the pressure reduced after passing through the discharge pressure reduction section 1 (470) is convenient for the user to use. As the second step of the second stage of pressure reduction, the discharge pressure reduction section 2 (480) is completed by passing through the discharge pressure reduction section 2 (380), which is a gap formed between the lower circular protrusion (846) formed at a narrow interval in the discharge pressure reduction section 1 (270) and the inner surface (813) of the pressure reduction upper piece, and reaching the discharge pressure reduction section 2 (280), which is a space formed by the lower circular protrusion tube groove (842) and the inner surface (813) of the pressure reduction upper piece, thereby completing the discharge pressure reduction section 2 (480) and performing pressure reduction. The pressure reduction occurs as the discharge pressure reduction section 1 (270) passes through the discharge pressure reduction section 2 (380) and reaches the expanded space, the discharge pressure reduction section 2 (280). A portable inflatable air breathing apparatus for rescue and evacuation purposes, featuring a built-in multi-stage decompression structure characterized by being composed of a progressing section.

20. In Paragraph 9, The above discharge pressure reduction section (80) is normally exposed to the external space at a pressure equal to atmospheric pressure, and is a section where a pressure reduction phenomenon occurs only when the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge amount control section (50) and discharged. A discharge pressure reduction upper piece (810) that is installed in a circular installation space which is the internal space of the upper cap part (40) and is connected to the lower end of the discharge volume control part (50), and a discharge pressure reduction upper piece (810) that is installed in a circular installation space which is the internal space of the upper cap part (40), and It is composed of a discharge pressure reduction lower piece (830) that is in contact with and interlocks with the nozzle head upper surface (128) of the main pressure reduction member (100), and the discharge pressure reduction upper piece (810) and the discharge pressure reduction lower piece (830) are configured to be in contact while maintaining airtightness. The air discharge amount is configured to increase or decrease through the upper surface (128) of the nozzle head of the main pressure reducing member (100) which is in contact with the lower end of the intermediate discharge pressure reducing member (80) according to the movement of the discharge amount control unit (50), and the lower end of the discharge amount control unit (50), the push block tip (58), contacts the discharge passage (817) of the discharge pressure reducing upper piece (810) and pushes downward. A portable inflatable air breathing device for rescue and evacuation purposes with a built-in multi-stage depressurization structure, characterized in that a discharge depressurization lower piece (830) in close contact with the underside of a discharge depressurization upper piece (810) is pushed downward, and the nozzle head upper surface (128) in contact with the lower surface of the discharge depressurization lower piece (830) is pressed so that the main depressurization member (100) opens and high-pressure air is discharged.

21. In Paragraph 17, The above discharge pressure reducing part (80) is installed in the discharge pressure reducing member installation space (802), which is a circular installation space within the upper cap part (40). A discharge pressure reducing upper piece (810) that is in contact with and linked to the lower end of the discharge volume control part (50), and a discharge pressure reducing member installation space (802) which is a circular installation space within the upper cap part (40), are installed. It is configured with a discharge pressure reduction lower piece (830) that contacts and moves in conjunction with the nozzle head upper surface (128) of the main pressure reduction member (100), and has a configuration in which pressure reduction is achieved through a discharge pressure reduction 1 space (270) and a discharge pressure reduction 2 space (280) formed by the discharge pressure reduction upper piece (810) and the discharge pressure reduction lower piece (830). A pressure reduction upper piece O-ring (811) is provided on the outer surface of the above-mentioned pressure reduction upper piece (810), and a passage is connected to the discharge port (29) and the discharge passage (27) of the push block (51) in the central part of the upper surface of the above-mentioned pressure reduction upper piece (810), and a discharge passage (817) is formed by penetrating from the inner surface of the above-mentioned pressure reduction upper piece (810). The inner surface of the upper pressure-reducing plate (810) is formed to protrude in two steps from the inner surface (813) of the upper pressure-reducing plate, forming an intermediate surface (815) of the upper pressure-reducing plate and an upper airtight contact surface (816), and the upper airtight contact surface (816), which is the end step surface of the upper pressure-reducing plate (810), contacts the lower airtight contact surface (836) of the lower pressure-reducing plate (830) to maintain airtightness. A plurality of discharge pressure reduction gaps (370), which are discharge pressure reduction lower part connecting holes (837) that connect an air passage from the lower surface of the discharge pressure reduction lower part (830) to the discharge pressure reduction lower part protruding surface (835), are formed by penetrating the middle surface (815) of the discharge pressure reduction upper part (810), which is an intermediate stepped surface of the discharge pressure reduction upper part, and the protruding surface (835) of the discharge pressure reduction lower part. A discharge pressure reduction space (270) is formed at the point where the discharge pressure reduction lower piece connecting hole (837) ends, and the discharge pressure reduction space (270) is composed of the inner surface (813) of the pressure reduction upper piece, the inner wall surface (812) of the pressure reduction upper piece, the protruding surface (835) of the pressure reduction lower piece, and the wall surface (839) of the lower circular protruding tube. A portable refillable air breathing device for life rescue and evacuation purposes, in which a multi-stage pressure reduction structure is built in, characterized in that the lower surface (831) of the discharge pressure reduction lower piece (830) is configured to be in contact with the upper surface (128) of the nozzle head of the main pressure reduction member (100).

22. In Paragraph 1, The bottom filling cover (60) is assembled to the lower part of the high-pressure container (10), and The above high-pressure container (10) is configured to fill the interior with high-pressure air and is composed of a bottom filling cover member (600) configured according to the specifications of the air supply device. A filling port inlet 6 (660), which is a straight hole shape formed through the inside of a bottom filling cover member (600) and penetrating to the outside, is configured to penetrate through the center of a sealing projection 6 (612); a sealing support member 6 (620) and a sealing member 6 (610) are assembled by combining them in a filling port installation hole (603) equipped with a sealing projection 6 (612) on a circular bottom surface; a washer 6 (640) is assembled on the sealing support member 6 (620) and locked with a locking ring 6 (650) with a gap 6 (694). High-pressure air is injected into the high-pressure filling air tank through the filling port inlet 6 (660), which is a straight hole shape, at a filling pressure (662). Normally, the sealing protrusion 6 (612) and the sealing member 6 (610), which are formed in a circular shape and protrude upward inside the filling port installation hole (603), are pushed by the internal pressure (10ap) of the high-pressure container present inside the container, thereby maintaining airtightness. However, when filling with air, high-pressure air is injected into the high-pressure filling air tank through the filling port inlet 6 (660), which is a straight hole shape, at a filling pressure (662). A portable refillable air breathing device for life rescue and evacuation with a built-in multi-stage pressure reduction structure, characterized in that the filling pressure (662) injected through the filling port inlet 6 (660) overcomes the internal pressure (10ap) of the high-pressure container and pushes the sealing member 6 (610), combined with the sealing support member 6 (620), back to the locking ring 6 (650), creating a gap between the sealing projection 6 (612) and the sealing member 6 (610), and air containing high-pressure oxygen enters through the gap and enters the interior of the high-pressure container (10) through the filling gap 6 (630) formed between the sealing support member 6 (620) and the inner wall of the filling port installation hole (603) to be filled.

23. In Paragraph 5, The push block (51) of the discharge amount control unit (50) is It is composed of a push button (512), a push block body (52), a push block guide part (518), a push block push rod (516), and a push block tip (514). A push button (512) configured on the upper part of a push block (51) integrally formed with a push block body (52) and causing the push block (51) to move up and down as it is pressed by hand or pressure is removed, and A push block body (52) having a discharge port coupling hole (26) formed horizontally on one side of a push block (51), and a discharge port passage (27) formed vertically in communication with it, and a discharge passage (517) formed internally in communication with the push block guide part (518), the push block push rod (516), and the push block tip (514); A push block guide part (518) that is coupled to the inside of the push block guide groove (536) so as to guide the push block (51) by contacting its outer surface, and A push block push rod (516) that is integrally formed at the lower part of the push block guide part (518), is coupled to be movable up and down by passing through the push block push rod penetration hole (538) inside the push block guide groove (536), and has a discharge pressure reducing member (600) at the lower part connected to the push block tip (514). A portable inflatable air breathing device for life rescue and evacuation purposes, characterized by having a multi-stage pressure reduction structure built in, comprising a push block tip (514) that contacts the discharge pressure reduction member (600) and pushes the discharge pressure reduction member (600) up and down according to the movement of the push button (512).

24. In Paragraph 5, The push button (512) of the discharge amount control unit (50) has an arc-shaped groove formed on the upper surface and straight irregularities (513) formed so that fingers do not slip, making it easy to press the button. A push button coupling hole (392') for coupling a push button (512) is drilled in the upper part of the push button cover (39), and push button stopper protrusions (394) are installed on both sides downward from the push button coupling hole (392') and are formed on both sides of the push button (512) and are composed of corresponding button side protrusions (515). When the above push button (512) is pressed with a finger, the push block (51) is pressed, causing high-pressure air to be discharged, and when the pressing force is removed, the push block (51) moves upward due to the internal pressure of the high-pressure container (10), A portable refillable air breathing device for life rescue and evacuation purposes, characterized in that the corresponding button side protrusions (515) formed on both sides of the push button (512) are caught by the push button stopper protrusion (394) of the push button cover (39) to stop the discharged oxygen-containing air, thereby locking the air.

25. In Paragraph 5, The push block guide (53) of the discharge amount control unit (50) comprises a push block guide groove (536) to which the outer surface of the push block guide (518) contacts and is coupled to guide the push block (51), and Inside the push block guide groove (536), there is a push block push rod penetration hole (538) through which the push block push rod (516) passes and is coupled, and A cone-shaped push block push rod spring (516S) formed on the outer surface of a push block push rod (516) and constrained and coupled between the lower end of a push block guide (518) and the inner surface of a push block guide groove (536), which is installed so that a certain distance is maintained so that the nozzle member (120) is not pressed when the push block tip (514) of the push block (51) does not supply air and does not press the discharge pressure reducing member (800); A push block push rod circular guide (539) formed extending from the lower part of a push block push rod through hole (538) that guides the push block push rod (516) when it moves up and down, and A push block guide fixing bolt hole (532) for fixing the above push block guide (53) to the upper part of the upper cap part (40) with a bolt, and A guide coupling groove (534) of a push block guide (53) to which a coupling projection (36) formed on the lower part of a push button cover (39) is coupled to a groove formed on both side corners of the guide fixing bolt hole (532), and a coupling projection groove (426) of an upper cap part (40), A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage pressure reduction structure, characterized in that a pressure indicator member (700) is screw-coupled to an upper cap portion (40) and the pressure indicator member coupling groove (535) is formed such that the pressure indicator surface (710) of the pressure indicator member (700) protrudes.

26. In Paragraph 5, The push button cover part (30) of the discharge amount control part (50) is interconnected with the push button (512) and operates. A push button coupling hole (392') is provided in the central part of the push button cover portion (30) to which a push button (512) is coupled from the lower part of the push button cover portion (30) upward. When the push button (512) moves up and down, the push button coupling hole (392') guides the push button (512) so that it does not come out, and The connecting projection (36) of the push button cover portion (30) is connected to the guide connecting groove (534) of the push block guide (53) and the connecting projection groove (426) of the upper cap portion (40) to position the push button stopper projection (394) and the button side protrusion (515) so that they correspond to each other. A reinforcing flange (34) is formed at the bottom of the push button cover portion (30), and the reinforcing flange (34) is engaged with the inner projection (542) for fixing the button cover of the button cover fixing ring (54), so that the button cover fixing ring (54) is rotated to allow the button cover fixing ring fixing female screw (544) and the button cover fixing ring fixing male screw (424) to be combined and fixed. A push button coupling hole (392') for coupling a push button (512) is drilled in the upper part of the push button cover (39), and push button stopper protrusions (394) are installed on both sides downward from the push button coupling hole (392') and are formed on both sides of the push button (512) and are composed of corresponding button side protrusions (515). When the above-mentioned push button (512) is pressed with a finger, the push block (51) is pressed, causing high-pressure air to be depressurized and discharged, and when the pressing force is removed, the push block (51) moves upward due to the internal pressure of the high-pressure container (10), A portable refillable air breathing device for life rescue and evacuation purposes, characterized in that the corresponding button side protrusions (515) formed on both sides of the push button (512) are caught by the push button stopper protrusion (394) of the push button cover (39) to stop the discharged oxygen-containing air, thereby locking the air.

27. In Paragraph 5, The assembly sequence of the components of the portable inflatable air breathing apparatus for life rescue purposes, which has the above-mentioned multi-stage decompression structure built in, is: A high-pressure container (10) having a reinforcing flange (12) formed inside, a container bottom upper sealing ring (15c) and a container bottom lower sealing ring (15d) are respectively fitted into the container bottom upper sealing ring groove (15ch) and the container bottom lower sealing ring groove (15dh) of a bottom filling cover member (600), and the container lower female screw (15) of the high-pressure container (10) is screw-coupled with the bottom filling cover coupling screw (604). An internal partition flange (41) protruding inwardly is configured to partition the main pressure reducing member coupling hole (432) and the discharge pressure reducing member coupling hole (433) inside the upper cap part (40), and The main pressure reducing member (100) is screw-coupled to the main pressure reducing member coupling hole (432) of the upper cap part (40) from the downward direction to the upward direction, and The discharge pressure reducing member (600) is inserted and coupled into the discharge pressure reducing member coupling hole (433) of the upper cap part (40) from the upper direction to the lower direction, and The upper cap container upper sealing ring (15a) and the upper cap container lower sealing ring (15b) are respectively connected to the upper cap container upper sealing ring groove (15ah) and the upper cap container lower sealing ring groove (15bh) formed in the upper cap portion (40). The upper female screw (14) of the high-pressure vessel (10) and the upper cap male screw (422) are screw-coupled, The pressure indicator (70) is screw-coupled to the pressure indicator member coupling hole (434) from the upper cap (40) in the downward direction, and A push block guide (53) is coupled to the upper cap portion (40) so that the pressure indicator portion (70) is inserted into the pressure indicator member coupling groove (535), and A push block (51) is inserted and coupled to the above push block guide (53) so as to be movable up and down, and A push button cover portion (30) is combined to cover the discharge amount control portion (50) composed of the above push button cover portion (30), push block (51), and push button (512) in order to protect it, and It is configured to be coupled to the upper cover gap male screw (422) so as to press and fix the reinforcing flange (34) of the push button cover part (30) by passing through the push button cover part (30) with the button cover fixing ring (54). A portable inflatable air breathing device for life rescue and evacuation purposes, having a built-in multi-stage depressurization structure, characterized in that when the push button (512) belonging to the discharge volume control unit (50) is pressed up and down, the push block (51) moves up and down, and as the push block (51) moves up and down, the main depressurization member (100) is pressed to discharge high-pressure air, depressurizes it through the discharge depressurization member (600), and is supplied to the user through the discharge port (29) or the supply is stopped.

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