Portable fill-type air respirator having combination filling and multi-stage decompression structure

Abstract

The present invention relates to a portable fill-type air respirator equipped with a combination fill and multi-stage decompression structure, the emergency air respirator providing air containing oxygen to a patient in case of a fire evacuation or emergency. Specifically, without a separate decompression structure, air is rapidly supplied using a built-in decompression valve, compressed air is refilled through a filling port, and high-pressure compressed air is decompressed in multiple stages so that, at the point of discharge, as decompression has taken place multiple times in a decompression section as well as in a discharge channel, the air is discharged in a state that is comfortable for a user to breathe in. Therefore, the present invention ensures reduction in size and portability by filling a high-pressure container with high-pressure air, and supplies high-pressure air to a user at a stable pressure via multi-stage decompression.

Description

Portable refillable air breathing apparatus equipped with a combined filling and multi-stage decompression structure

[0001] The present invention relates to a portable inflatable air breathing apparatus equipped with a combined filling and multi-stage depressurization structure, and more specifically, to an emergency rescue air breathing apparatus that is easy for the user to carry and can provide oxygen-containing air, etc., to a patient who urgently requires oxygen in a fire evacuation situation or other emergency situations by depressurizing air filled at high pressure in multiple stages.

[0002] Generally, if a person loses consciousness after being exposed to gas and smoke or after being in a state of apnea for more than about 5 minutes, they will fall into severe hypoxia and eventually die.

[0003] Furthermore, since severe hypoxia 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, 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] 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.

[0007] 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-containing air to people exposed to oxygen deficiency or suffocation from toxic gases due to fire, etc.

[0008] In addition, supplying oxygenated air immediately to athletes during or after sports that require severe physical strength helps them recover quickly to a normal physical condition, and supplying oxygenated air helps them recover quickly while or after extinguishing a fire.

[0009] 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.

[0010] 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.

[0011] The objective of the present invention is to supply air to a user at a stable and safe pressure state, allowing for convenient breathing, through multi-stage depressurization of high-pressure air.

[0012] Another objective is to miniaturize the air breathing apparatus to make it easy for the user to carry by providing a container that safely holds high-pressure air.

[0013] Another objective is to provide a configuration that increases filling efficiency by using both standard filling and arbitrary filling ports to facilitate filling.

[0014] Another objective is to rapidly fill high-pressure air containing oxygen to a high pressure and depressurize it to a safe pressure, thereby supplying the user with air at a pressure suitable for breathing, through a combined filling and depressurization structure for portable refillable air breathing devices.

[0015] Another objective is to miniaturize the air breathing apparatus so that it can safely fill with high-pressure air and supply a large volume of air into a container of a fixed size, making it easy for the user to carry.

[0016] According to the present invention for solving the above-mentioned problem, the invention comprises: a cylindrical high-pressure container for storing air containing oxygen for breathing by filling it into a sealed container at high pressure and depressurizing it through a depressurization structure for use; a bottom filling cover part assembled at the bottom of the high-pressure container for filling the interior of the high-pressure container with high-pressure air containing oxygen and sealing and preserving the high-pressure air; an upper cap part coupled to the top of the high-pressure container to maintain airtightness and withstand high pressure; and a depressurization valve block part assembled on the upper cap part and equipped with a valve configuration for depressurizing the high-pressure air and controlling the amount of air discharged.

[0017] The present invention is compact and easy to carry because high-pressure air containing oxygen is filled into a high-pressure-resistant container. It also has the effect of increasing filling efficiency by using both standard filling and arbitrary filling ports, and is highly efficient because the high-pressure air is depressurized through several stages to a stable pressure suitable for the user to breathe before being supplied to the user.

[0018] FIG. 1 is an exploded perspective view of a portable refillable air breathing apparatus equipped with a combined refill and multi-stage depressurization structure of the present invention.

[0019] FIG. 2 is a cross-sectional view of a portable refillable air breathing device equipped with a refill and multi-stage depressurization combined structure of the present invention.

[0020] FIG. 3 is a cross-sectional view of an air breathing device having a plurality of internal and external reinforcing structures according to the present invention.

[0021] FIG. 4 is a horizontal cross-sectional view of the pressure reducing valve block (20) of the present invention,

[0022] FIG. 5 is a partial cross-sectional view of the main pressure reduction unit (100).

[0023] FIG. 6 is a partial cross-sectional view illustrating the first pressure reduction section of the main pressure reduction unit (100),

[0024] FIG. 7 is a partial cross-sectional view illustrating the second pressure reduction section of the main pressure reduction unit (100),

[0025] FIG. 8 is a partial cross-sectional view illustrating the third pressure reduction section of the main pressure reduction unit (100).

[0026] FIG. 9 is a partial cross-sectional view illustrating the fourth pressure reduction section of the main pressure reduction unit (100).

[0027] FIG. 10 is a partial cross-sectional view illustrating the fifth pressure reduction section of the main pressure reduction unit (100).

[0028] FIG. 11 is a partial cross-sectional view illustrating the sixth pressure reduction section of the main pressure reduction unit (100),

[0029] FIG. 12 is a cross-sectional view of a state in which there is no air discharge because there is no contact between the valve control unit (500) and the main pressure reducing unit (100).

[0030] FIG. 13 is a cross-sectional view illustrating a state in which there is no air discharge because there is no contact between the valve control part (500) and the main pressure reducing part (100), and the vertically moving square pusher member catch (544).

[0031] FIG. 14 is a cross-sectional view of a state in which a small amount of air is discharged through contact between the valve control unit (500) and the main pressure reducing unit (100).

[0032] FIG. 15 is a cross-sectional view of a state in which a large amount of air is discharged through contact between the valve control unit (500) and the main pressure reducing unit (100).

[0033] FIG. 16 is an enlarged cross-sectional view of the part where a small amount of air is discharged through contact between the valve control unit (500) and the main pressure reducing unit (100).

[0034] FIG. 17 is an enlarged cross-sectional view of the part where a large amount of air is discharged through contact between the valve control unit (500) and the main pressure reducing unit (100).

[0035] FIG. 18 is a cross-sectional view illustrating a storage space of air containing high-pressure oxygen inside a high-pressure vessel (10).

[0036] FIG. 19 is a cross-sectional view of a bottom filling cover part (70) assembled to the lower part of a high-pressure container (10).

[0037] FIG. 20 is a cross-sectional view of the state of the bottom filling cover part (70) illustrating the state of filling air into the high-pressure container (10).

[0038] FIG. 21 is a cross-sectional view of an internal pressure reduction and filling bypass section (80) assembled at the lower part of an upper cap section (40).

[0039] FIG. 22 is a cross-sectional view of the state of the internal depressurization and filling bypass section (80) illustrating the state in which air is filled through the upper filling section (60).

[0040] FIG. 23 is a cross-sectional view of an upper filling part (60) coupled to the outside of a pressure reducing valve block part (20) and for filling with high-pressure air containing oxygen,

[0041] FIG. 24 is a cross-sectional view of the state of the upper filling part (60) which is coupled to the outside of the pressure reducing valve block part (20) and describes the state of filling with high-pressure air containing oxygen.

[0042] FIG. 25 is an air flow diagram illustrating the state of a path for filling high-pressure air containing oxygen through a depressurization and filling bypass section (80) from an upper filling section (60).

[0043] FIG. 26 is an air flow diagram illustrating the path in which air filled in a high-pressure container (10) is depressurized through a depressurization and filling bypass section (80), depressurized through a main depressurization section (100), and discharged through an air supply section (50).

[0044] FIG. 27 is a cross-sectional view illustrating the interlocking structure between a high-pressure container (10) and a bottom-filling cover part (70) for withstanding internal high pressure.

[0045] FIG. 28 is a cross-sectional view illustrating the interlocking structure between a high-pressure container (10) and an upper cap part (40) for withstanding internal high pressure.

[0046] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0047] The present invention relates to a filling and depressurization combined structure for a portable refillable air breathing device that is easy to carry and can be refilled, which stores air containing oxygen necessary for breathing in a cylindrical high-pressure container (10) at high pressure and depressurizes it in multiple stages for life-saving purposes for people who have difficulty breathing on their own or who are in critical condition due to hypoxia.

[0048] The reason for performing decompression in multiple stages is that the high-pressure air cannot be inhaled directly into the lungs by the user. If such high-pressure air were to enter the lungs, the volume of the inhaled air would continuously expand within the cells constituting the alveoli, potentially causing cell damage and bleeding, which carries a high risk of serious side effects. Therefore, it is a prerequisite that air at an appropriate pressure be supplied for the patient or user to use.

[0049] Furthermore, this is intended to provide conditions for the user to breathe safely, and since the ability to depressurize in multiple stages implies that a large volume of air can be stored and used within a given limited space at higher air pressures, depressurization capability implies that the air breathing apparatus can be made lighter.

[0050] In other words, to explain the effect of a structure capable of depressurizing high-pressure air inside a portable refillable air breathing device, if the depressurization structure installed inside the air breathing device is capable of depressurizing to one-tenth of the pressure, it means that even if ten times the existing injection pressure of the given high-pressure container (10) is filled with air pressure, it is safe for the user to use without any possibility of problems occurring. This implies that ten times the amount of air can be compressed and filled into the same high-pressure container (10) and stored, thus having the effect of making the air breathing device lighter or increasing the compressed air capacity.

[0051] In order for weight reduction to be achieved, the premise that the structure of the high-pressure container (10) must be a safe structure that has resistance to explosion or deformation against internal air pressure must be satisfied.

[0052] The portable refillable air breathing device of the present invention comprises a cylindrical high-pressure container (10), an upper cap portion (40) that seals the upper and lower parts of the cylindrical high-pressure container (10), a bottom filling cover portion (70), a pressure reducing valve block portion (20) that reduces the pressure of high-pressure air, and an internal pressure reducing and filling bypass portion (80) assembled at the lower part of the upper cap portion (40) and having a configuration that simultaneously rapidly fills high-pressure air containing oxygen and a configuration that reduces the pressure of the discharged high-pressure air.

[0053] The following describes a first embodiment of a portable refillable air breathing device equipped with a combined refill and multi-stage depressurization structure according to the present invention.

[0054] A pressure reducing valve block (20) is provided, comprising a cylindrical high-pressure container (10) for storing and filling air for breathing at high pressure, a valve control unit (500) assembled on the upper part of the high-pressure container (10) and configured on one side with a valve for controlling the supply amount of high-pressure air to be used, a pressure display unit (80) for measuring the pressure of the high-pressure air filled inside the high-pressure container (10), an explosion prevention unit (90) for preventing the high-pressure container (10) from exploding due to external impact, and an upper filling unit (60) for filling the high-pressure container (10) with high-pressure air according to a specified standard, an air supply unit (50) for supplying air at reduced pressure for the user to breathe, and an upper cap unit (40) coupled to the high-pressure container (10), and inside the pressure reducing valve block (20), a main unit for reducing high pressure The device is configured to include a pressure reducing section (100) and a connecting passage (30) for transmitting high-pressure air, and a bottom filling cover section (70) assembled at the bottom of the high-pressure container (10) for filling and sealing the interior (10a) of the high-pressure container (10) to preserve high-pressure air.

[0055] In summary, the air breathing device of the present invention comprises: a cylindrical high-pressure container (10) that stores air containing oxygen for breathing by filling it into a sealed container at high pressure and depressurizing it through a depressurization structure for use; a bottom filling cover part (70) assembled at the bottom of the high-pressure container (10) and filled with high-pressure air containing oxygen inside (10a) of the high-pressure container (10) and sealed to preserve the high-pressure air; an upper cap part (40) coupled to the top of the high-pressure container (10) to maintain airtightness and withstand high pressure; a depressurization valve block part (20) assembled at the top of the upper cap part (40) and equipped with a valve configuration for depressurizing high-pressure air containing oxygen and controlling the amount of discharged air; an internal depressurization and filling bypass part (80) assembled at the bottom of the upper cap part (40) and equipped with a configuration for rapidly filling with high-pressure air containing oxygen and a configuration for depressurizing discharged high-pressure air; and the Inside the pressure reducing valve block (20), there is a main pressure reducing section (100) that reduces the pressure of high-pressure air containing oxygen to a level that is easy for the user to use, a connecting passage (30) that transmits high-pressure air containing oxygen by reducing the pressure of the air through the main pressure reducing section (100), a valve control section (500) that is provided over the inside and outside of the pressure reducing valve block (20) and has a valve configured on one side for the user to adjust the supply amount of high-pressure air containing oxygen, and outside the pressure reducing valve block (20), there is a pressure display section (78) that informs the user of the pressure of high-pressure air containing oxygen filled in the inside (10a) of the high-pressure container (10), an explosion prevention section (90) that prevents the high-pressure container (10) from exploding due to external impact, and oxygen using a high-pressure air inlet of a standard size determined by regulations in the inside (10a) of the high-pressure container (10). An upper filling part (60) for filling with high-pressure air, andIt is characterized by being configured to include an air supply unit (50) that supplies oxygen-containing air by depressurizing it to make it suitable for the user to breathe through the above-mentioned connecting passage (30).

[0056] To realize the objectives of the present invention, namely lightweighting, providing an air breathing device with a safe pressure suitable for breathing, and miniaturizing the breathing device, the necessary conditions are to achieve the tasks of improving pressure reduction capability and increasing resistance to the internal pressure of the container.

[0057] The increase in resistance to internal pressure of the primary high-pressure vessel (10) is achieved by reinforcing the interior rather than the exterior shape to enhance the aesthetics, and to achieve the intended result, a reinforcing flange (12) is formed inside and, through testing by a testing institution, it is confirmed that there is no problem even when the pressure to be used reaches twice the intended pressure.

[0058] The present invention describes a configuration for maintaining airtightness and withstanding internal pressure for filling and storing high-pressure air containing oxygen inside a high-pressure container (10). In the present invention, the upper airtightness of the high-pressure container (10) is maintained by forming a female screw (14) on the upper inner surface of the high-pressure container (10) and coupling 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 (15ah), which is the outer groove of the upper cap part (40). Below the upper cap part male screw (422), an upper sealing ring (15b) of the upper cap container is fitted into the lower sealing ring groove (15bh), which is the outer groove of the upper cap part (40), thereby maintaining airtightness. The lower airtightness of the high-pressure container (10) is [described as follows] A lower female screw (15) is formed on the lower inner surface of the high-pressure container (10), and the bottom formed on the outer surface of the bottom filling cover part (70)

[0059] It is coupled with the filling cover coupling screw (704), and the container bottom upper sealing ring (15c) is formed on top of the bottom cover coupling screw (704).

[0060] A container bottom upper sealing ring groove (15ch) is fitted into the outer circumference groove of the bottom filling cover part (70), and a container bottom lower sealing ring (15d) is fitted into the outer circumference groove of the bottom filling cover part (70) at the lower side where the bottom cover coupling screw (704) is formed, thereby maintaining airtightness.

[0061] Additionally, referring to FIG. 2, the reinforcing means of the high-pressure vessel (10) is formed to protrude inwardly from the inner wall surface of the central part inside the high-pressure vessel (10) and is configured to protrude in a circular shape into the interior (10a) of the high-pressure vessel (10) to prevent shape deformation where the central part of the high-pressure vessel (10) swells due to the internal pressure of the air filled with high pressure. The reinforcing flange (12) has a hole formed in the center to allow the air filled with high pressure to pass through, and is configured as one or multiple 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 characterized by being composed of a homogeneous material in the shape of a metal rod to withstand high-pressure air pressure.

[0062] The structure for maintaining airtightness between the high-pressure container (10) and the upper cap portion (40) and between the high-pressure container (10) and the bottom filling cover portion (70) is described as follows.

[0063] 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 (15ah), which is the upper 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 (15bh), which is the outer groove of the upper cap part (40). The female screw (14) and the male screw (422) of the upper cap container are screw-coupled to maintain internal airtightness.

[0064] A lower female screw (15) 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 (704) formed on the outer surface of the bottom filling cover part (70). Above the bottom filling cover coupling screw (704), a 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 (70). Below the bottom filling cover coupling screw (704), a 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 (70). The container lower female screw (15) and the bottom filling cover coupling screw (704) are screw-coupled to maintain internal airtightness.

[0065] An upper cap portion (40) is attached to the upper part of the high-pressure container (10), and a bottom filling cover portion (70) is attached to the lower part of the high-pressure container (10) to form a sealed container.

[0066] Even when the air breathing device of the present invention is heated by flames at a fire scene, the O-rings embedded and coupled within the high-pressure container (10), namely 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), are coupled to the upper cap container upper sealing ring groove (15ah), upper cap container lower sealing ring groove (15bh), container bottom upper sealing ring groove (15ch), and container bottom lower sealing ring groove (15dh), respectively, and the O-rings melt due to external heat, causing the internal high-pressure air to leak out through the screw threads and the high-pressure container (10) to explode.

[0067] In the event of an external impact, the explosion prevention unit (90) takes charge. When an external impact occurs that drops the air breathing device, the explosion prevention gap (PG) (96), formed by a thin film provided within the explosion prevention unit (90), bursts, causing high-pressure air to leak out, thereby preventing an explosion.

[0068] In the present invention, the pressure of the compressed air used in the high-pressure container may be 500 to 1000 ba, but the air compressed to 250 to 300 ba 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 constructed with a structure that is safe despite external influences such as external shock or temperature rise, and pressures 250 to 300 times higher.

[0069] 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.

[0070] 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.

[0071] Due to this high-pressure container (10), the size of the air breathing device can be reduced, making it possible to provide a portable air breathing device that is lightweight, safe, and has an increased usage time.

[0072] In addition, the high pressure air contained within the high-pressure container (10) must have a pressure reduction capability that allows the user to use the high pressure air comfortably.

[0073] 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.

[0074] 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 (15) of the high-pressure container (10), thereby leaving a residual thickness when cutting the high-pressure container (10).

[0075] In the present invention, since there are limitations to reinforcing the interior to make the exterior aesthetically pleasing due to the structural conditions formed inside, an additional configuration is formed on the exterior. This involves forming one or more external reinforcing protrusions (13) at regular intervals on the exterior of the high-pressure container (10) to reinforce the high-pressure container (10) so that it remains safe even under increasing pressure, thereby improving durability; or, the thickness of the high-pressure container (10) is formed with sufficient thickness, and a portion is machined to leave one or more external reinforcing protrusions (13) remaining to reduce the weight of the air breathing device, thereby reinforcing the high-pressure container (10) so that it remains safe even under increasing pressure, thereby improving durability. Furthermore, a cutting process is performed to form the upper female screw (14) and the lower female screw (15) of the high-pressure container (10) due to the bottom filling cover part (60) assembled on the lower part of the high-pressure container (10) and the upper cap part (40) assembled on the upper part of the high-pressure container (10). Since the high-pressure vessel (10) is vulnerable to pressure and there is a limitation on the installation location of the reinforcing flange (12) due to the assembly location, the external reinforcing protrusions (13) are distributed on the outside of the high-pressure vessel (10).

[0076] The purpose is to explain a structure that maintains airtightness to withstand high internal pressure, a structure in which a bottom filling cover part (70) is engaged with the lower edge of the high-pressure container (10), and a structure in which an upper cap part (40) is engaged with the upper edge of the high-pressure container (10). That is, the structure reinforcing the high-pressure container (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.

[0077] In the present invention, a bottom filling cover part (70) is assembled at the bottom of the high-pressure container (10) by screwing a bottom filling cover connecting screw (704) formed on the outer periphery of the bottom filling cover part (70) with a bottom filling cover connecting screw (15) formed on the bottom of the high-pressure container (10), and 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 the bottom filling cover member (700), and screwed with the bottom filling cover connecting screw (704) with the bottom filling cover connecting screw (15) of the high-pressure container (10), and the structure in which the bottom filling cover part (70) engages with the lower edge of the high-pressure container (10) to withstand high internal pressure is a container bottom protruding downward from the lower edge of the high-pressure container (10). The coupling projection (18) is coupled with the bottom filling cover coupling projection groove (708) of the bottom filling cover part (70), and the container bottom joining surface (19) formed on the lower edge of the high-pressure container (10) is in contact with the bottom filling cover joining surface (709) of the bottom filling cover part (70), 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 (708) of the bottom filling cover part (70), so that when the high-pressure container (10) swells and deforms due to high internal pressure, the bottom filling cover restraining projection (707) restrains the container bottom coupling projection (18) to withstand the high internal pressure.

[0078] In addition, in the present invention, an upper cap part (40) is assembled on the upper part of the high-pressure container (10) by screwing together the upper female screw (14) formed on the upper part of the high-pressure container (10) and the upper male screw (422) formed on the outer periphery of the upper cap part (40), and the upper sealing ring (15a) and the lower sealing ring (15b) of the upper cap container are respectively fitted into the upper sealing ring groove (15ah) and the lower sealing ring groove (15bh) of the upper cap part (40), and screwed together with the upper female screw (14) and the upper male screw (422) of the high-pressure container (10), and the structure in which the upper cap part (40) engages with the upper rim of the high-pressure container (10) to withstand high internal pressure is such that the upper cap part (40) is formed by a container upper coupling projection (16) protruding upward from the upper rim of the high-pressure container (10) of the upper cap part (40). The upper cap portion coupling projection groove (412) is coupled, and the upper container joint surface (17) formed on the upper edge of the high-pressure container (10) contacts the upper cap portion joint surface (414) of the upper cap portion (40), and the upper container joint projection (16) formed on the upper edge of the high-pressure container (10) is coupled to the upper cap portion coupling projection groove (412) of the upper cap portion (40), so that when the high-pressure container (10) swells and deforms due to high internal pressure, the upper cap portion restraining projection (413) restrains the upper container joint projection (16) to withstand the high internal pressure.

[0079] In order to obtain a portable air breathing device with increased usage time in a high-pressure container (10) of a given capacity, the requirements are whether air can be filled at high pressure and whether the amount of air containing oxygen filled at high pressure can be provided at a pressure that is stable and abundant for the user to breathe, and how stable the pressure reduction capability is.

[0080] The higher the compression ratio of the air injected into the high-pressure container (10), the higher the ability of the high-pressure container (10) to withstand internal pressure, and if the internal air pressure is high, the high-pressure air must be reduced to a pressure that is convenient for the user to inhale, and the amount of air required must be continuously supplied.

[0081] The prerequisite for obtaining a portable air breathing apparatus is that the compression ratio of the air injected into the high-pressure container (10) will be high, and accordingly, a sturdy structure of the high-pressure container (10) and a pressure reduction capability are required. Therefore, the present invention aims to improve the pressure reduction capability by providing a pressure reduction means separate from the main pressure reduction member (100).

[0082] In addition, since the installation location of the pressure reduction means, which is separate from the main pressure reduction member (100) of the present invention, is located in the direction of the high-pressure container (10) that stores air, there is an inconvenience in that filling must be done for a long time by utilizing the same narrow passage as the pressure reduction passage. Therefore, the problem is solved by providing an internal pressure reduction and filling bypass section (80) that performs filling by utilizing a check valve structure that opens and closes according to the pressure difference of filling without using the pressure reduction passage, thereby bypassing the narrow passage and performing filling quickly.

[0083] The above internal pressure reduction and filling bypass section (80) is described below.

[0084] The above internal depressurization and filling bypass unit (80) is configured to be responsible for depressurization, similar to the main depressurization unit (90), and performs depressurization and filling simultaneously.

[0085] In the present invention, the internal pressure reduction and filling bypass section (80) formed inside the high-pressure container (10) is characterized by a filling function configuration that allows oxygen-containing air filled from the upper filling section (60) to pass through the internal pressure reduction and filling bypass section (80) as a bypass to be filled, and a pressure reduction function configuration that reduces pressure inside the high-pressure container (10) when oxygen-containing air is supplied through the air supply section (50) inside the high-pressure container (10).

[0086] This explains that in the internal space formed by the nozzle guide member (110) and the pressure regulating depressurizing member (140), the nozzle member (120) and the movable nozzle member (130) perform a regulating action such as discharging air or locking it according to the control of the valve control unit (500). In the present invention, the main depressurizing unit (100) is provided in the main depressurizing unit installation space (102) inside the pressure regulating valve block unit (20) and communicates with the valve control unit (500). It includes a nozzle guide member (110) that guides the nozzle member (120) and the movable nozzle member (130), which are coupled to the upper part of the movable nozzle member (130) capable of moving back and forth, and a movable nozzle member (130) coupled to the inside of the nozzle guide member (110) so as to be able to move back and forth according to the control of the valve control unit (500), and the nozzle guide member (110) which is coupled to the nozzle guide member (110) and controls the locking pressure by rotating a screw. It is composed of a locking pressure regulating pressure reducing member (140) that restrains and combines the member (110) to reduce the pressure of high-pressure air containing oxygen, and a nozzle member (120) and a movable nozzle member (130) are housed within 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 control of the valve control unit (500), and is characterized in that the movable nozzle member (130) is pushed by the high-pressure air filled in the high-pressure container (10), and the nozzle member (120), which is one body with the movable nozzle member (130), comes into contact with a part of the valve control unit (500) to perform a control action such as discharging high-pressure air or locking it.

[0087] The nozzle member (120) and the movable nozzle member (130) perform a control action such as discharging or locking air in the internal space formed by the nozzle guide member (110) and the pressure regulating depressurizing member (140) according to the control of the valve control unit (500), and the high-pressure air inside flows sequentially for each depressurizing section, and the depressurization is divided into stages. In the present invention, the main depressurizing unit (90) refers to the main depressurizing member (100), and the main depressurizing member (100) is composed of a plurality of depressurizing sections (400), the first depressurizing section (410) is composed of a first gap section (310) and a first depressurizing space section (210), the second depressurizing section (420) is composed of a second gap section (320) and a second depressurizing space section (220), and the third depressurizing section (430) is the third It is composed of a 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), the fifth pressure reduction section (450) is composed of a fifth gap section (350) and a fifth pressure reduction space section (250), and the sixth pressure reduction section (460) is composed of a sixth gap section (360) and a sixth pressure reduction space section (260). It is composed of an air supply section (50) that supplies air containing reduced oxygen to allow the user to breathe comfortably by gradually reducing the pressure of oxygen filled with high pressure inside the high-pressure container (10) in sequential sections. Each of the above pressure reduction sections can change the pressure reduction rate by changing the ratio of the cross-sectional area of ​​the space section of the corresponding section where high-pressure air flows to the cross-sectional area of ​​the gap section. Each of the above pressure reduction sections can omit the space section of the corresponding section and the corresponding It is characterized by the ability to perform depressurization by omitting the depressurization section.

[0088] 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.

[0089] In the internal space formed by the nozzle guide member (110) and the pressure regulating depressurizing member (140), the nozzle member (120) and the movable nozzle member (130) perform a control action such as discharging or locking air according to the control of the valve control unit (500), and the high-pressure air inside flows sequentially in each depressurizing section, and the depressurization is divided into stages, and the first depressurizing section to the sixth depressurizing section are described sequentially in stages. In the present invention, the first depressurizing section is a section in which high-pressure air containing high-pressure oxygen filled inside the high-pressure container (10) is depressurized. The high-pressure air filled inside the high-pressure container (10) passes through a narrow space and reaches the first depressurizing space (210), which is an expanded space, and depressurization proceeds thereafter, and the air passes through the first gap section (310) inside the high-pressure container (10) and reaches the first depressurizing space (210), which is an expanded space, and depressurization proceeds thereafter. It is composed of the interior of a high-pressure vessel (10), a first gap section (310), and a first pressure reduction space section (210). The first gap section (310) is coupled with a gap female screw (142) formed inside a cylindrical main pressure reduction member installation space (102) inside a pressure reduction valve block section (20) and a gap male screw (144) formed on the outer side of a locking pressure regulating pressure reduction member (140), so that air containing high-pressure oxygen flows through the gap between the threads and grooves formed by the gap female screw (142) and the gap male screw (144). The first pressure reduction space section (210) passes through the gap female screw (142) formed inside the cylindrical main pressure reduction member installation space (102) inside the pressure reduction valve block section (20) at the point where the path of the first gap section (310) ends. It is composed of a space formed by omitting the gap female screw (142) and a space formed by omitting the gap male screw (144) passing through the gap male screw (144) formed on the outer side of the locking pressure regulating pressure reducing member (140), 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 pressure reducing valve block (20) is sealed through the sealing member 1 (116).It is characterized by being composed of a section in which pressure reduction proceeds as it passes through the first gap section (310) inside the high-pressure vessel (10) and reaches the first depressurization space section (210), which is an expanded space.

[0090] The above-mentioned second depressurization section is a section in which the pressure that has been depressurized once after passing through the first depressurization section is further depressurized. High-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the first depressurization space section (210), which is an expanded space, where depressurization proceeds. From the first depressurization space section (210), it passes through the second gap section (320) and reaches the second depressurization space section (220), which is an expanded space, where depressurization proceeds. The second depressurization space section (210) is composed of the first depressurization space section (210), the second gap section (320), and the second depressurization space section (220). The second gap section (320) forms a gap penetration hole (322) that penetrates from the outer surface to the inner surface of the locking pressure control depressurization member (140) forming the first depressurization space section (210) to form a gap. The outer surface of the nozzle guide member (110) and the locking pressure control depressurization member (140) The second pressure reduction space (220) is formed by a joint gap (324) formed by the inner surface, and 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 space is expanded at the end of the path of the second gap section (320), an interspace 2 (226) which is the space remaining after the movable nozzle member (130) is coupled to the nozzle guide member (110), and an interspace 1 (224) between the nozzle guide member (110), the rear end, and the locking pressure control pressure reduction member (140), and is characterized by being composed of a section in which pressure reduction 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.

[0091] The above-mentioned third depressurization section is a section in which further depressurization is performed to make it convenient for the user to use the secondary depressurized pressure after passing through the second depressurization section. It is composed of a second depressurization section (220), a third gap section (330), and a third depressurization section (230), wherein high-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches a second depressurization section (220), which is an expanded space, where depressurization is performed, and from the second depressurization section (220), it passes through a third gap section (330) and reaches a third depressurization section (230), which is an expanded space, where depressurization is performed. The third gap section (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 containing oxygen present in the second depressurization section (220) passes, and the third depressurization section (230) It is characterized by being composed of a space formed between the outer 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 a section in which pressure reduction proceeds as it passes through the third gap section (330) from the second pressure reduction space section (220) and reaches the third pressure reduction space section (230), which is an expanded space.

[0092] The above-mentioned fourth depressurization section is a section in which further depressurization is performed to make it convenient for the user to use the pressure reduced after passing through the third depressurization section. High-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the third depressurization space section (230), which is an expanded space, where depressurization is performed. From the third depressurization space section (230), it passes through the fourth gap section (340) and reaches the fourth depressurization space section (240), which is an expanded space, where depressurization is performed. The fourth depressurization space section (230) is composed of the third depressurization space section (230), the fourth gap section (340), and the fourth depressurization space section (240). The fourth gap section (340) is composed of 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 containing oxygen present in the third depressurization space section (230) passes, and the nozzle guide member (110). A circular sealing member 2 (118) formed at the front of the inner hole and a circular sealing projection (132) formed on the front of the movable nozzle member (130) are in close contact with each other to maintain airtightness of the high-pressure filled oxygen-containing air inside the high-pressure container (10), and an upper surface protrusion gap (344) is formed, 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 valve control part (500), the gap between the sealing member 2 (118) and the sealing projection (132) increases according to the distance of pressing, so the discharged oxygen-containing air increases, and when it moves upward, the gap between the sealing member 2 (118) and the sealing projection (132) decreases, so the discharged oxygen-containing air As it decreases and the pressure disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so that the discharged air containing oxygen 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, the wall surface formed along the lower outer circumference of the nozzle member (120), the upper surface (139) of the movable nozzle member, and the lower surface (115) of the nozzle taper stem hole, andIt is characterized by being composed of a space formed by 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 the fourth gap section (330) to reach the fourth pressure reduction space (240), which is an expanded space.

[0093] The above-mentioned fifth depressurization section is a section in which further depressurization is performed to make it convenient for the user to use the pressure reduced after passing through the fourth depressurization section. High-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the fourth depressurization space section (240), which is an expanded space, where depressurization is performed. From the fourth depressurization space section (240), it passes through the fifth gap section (350) and reaches the fifth depressurization space section (250), which is an expanded space, where depressurization is performed. The fifth depressurization space section (240) is composed of the fourth depressurization space section (240), the fifth gap section (350), and the fifth depressurization space section (250). The fifth gap section (350) is a hollow of the nozzle tapered stem (124) of the nozzle member (120) formed as a single body at the tip of the movable nozzle member (130) and the nozzle guide member (110), through which high-pressure air containing oxygen present in the fourth depressurization space section (240) passes. The nozzle guide (112) is formed by a nozzle tapered stem groove (114) and a gap formed by a tapered stem gap (346). When the nozzle head (126) of the nozzle member (120) is pressed downward by the valve control part (500), the gap of the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged oxygen-containing air. When it moves upward, the gap of the tapered stem gap (346) contracts, decreasing the discharged oxygen-containing air. When the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged oxygen-containing air is submerged. The fifth pressure reduction space (250) is formed along the circumference of the nozzle at the center of the outer side surface of the nozzle member (120), where the path of the fifth gap part (350) ends and the space expands. It is characterized by being composed of a space formed between the inner surface of the circular groove (122) and the hollow nozzle guide (112), and a section in which 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.

[0094] The above-mentioned sixth depressurization section is a section in which further depressurization is performed to make it convenient for the user to use the pressure reduced after passing through the fifth depressurization section. It is composed of a fifth depressurization section (250), a sixth gap section (360), and a sixth depressurization section (260), wherein high-pressure filled air inside the high-pressure container (10) passes through a narrow space and reaches the fifth depressurization section (250), which is an expanded space, and depressurization is performed thereafter, and from the fifth depressurization section (250), it passes through the sixth gap section (360) and reaches the sixth depressurization section (260), which is an expanded space, and the sixth depressurization section (260). The sixth gap section (360) is composed of a gap formed between the hollow inner surface of the hollow nozzle guide (112) in the nozzle guide member (110) and the cylindrical nozzle head (126), through which high-pressure air containing oxygen present in the fifth depressurization section (250) passes. When the nozzle head (126) of the nozzle member (120) is pressed downward by the valve control part (500), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the amount of oxygen-containing air discharged, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the amount of oxygen-containing air discharged, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged oxygen-containing air is submerged, and the sixth pressure reduction space part (260) is formed such that the nozzle head (126), which is the tip of the nozzle member (120), protrudes where the path of the sixth gap part (360) ends and the space expands, and the lower surface (514) of the circular installation space (512), which is the internal space of the pressure reduction valve block part (20) where the valve control part (500) is installed, and the nozzle pusher It is characterized by being composed of a space formed by the lower surface of the block (510), and a section in which 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.

[0095] The pressure reduction action of the internal pressure reduction and filling bypass section (80) described above is configured such that the seventh pressure reduction section is a section where the pressure is further reduced to make it convenient for the user to use the initially reduced pressure, and the internal pressure reduction and filling bypass section (80) serves to perform the role of initially reducing pressure when oxygen-containing air is supplied through the air supply section (50) inside the high-pressure container (10). The high-pressure filled oxygen-containing air inside the high-pressure container (10) flows through the seventh gap section (370), which is a narrow space, and reaches the seventh pressure reduction space section (270) where pressure reduction proceeds. The seventh gap section (370) is a fine through hole formed in the sealing support member (372), which is a sealing support member (820) provided inside the internal pressure reduction and filling bypass block (890) of the internal pressure reduction and filling bypass member (800), through which the high-pressure oxygen-containing air present in the high-pressure container (10) passes. It is characterized by being composed of a gap formed by a hole (870), and the seventh pressure reduction space (270) is composed of a connecting passage (30) space connected to the central through hole (872) of the sealing member 5 (810), where the path of the hole (870) formed in the center of the sealing support member (372), which is the seventh gap section (370), ends and the space expands, and is composed of a section in which pressure reduction proceeds as it passes through the seventh gap section (370) inside the high-pressure container (10) and reaches the seventh pressure reduction space (270), which is the expanded space.

[0096] In addition, as another embodiment, the pressure reduction action of the internal pressure reduction and filling bypass section (80) is configured such that the internal pressure reduction and bypass section (470) is a section that further reduces the pressure to make it convenient for the user to use the initially reduced pressure, and the internal pressure reduction and filling bypass section (80) serves to reduce the pressure for the first time when air is supplied through the air supply section (50) inside the high-pressure container (10), and the high-pressure filled air inside the high-pressure container (10) flows through the internal through hole 8 (870), which is a narrow space, and reaches the central through hole 8 (872), thereby reducing the pressure.

[0097] The above internal through hole 8 (870) is composed of a gap formed by the internal through hole 8 (870) of the sealing support member 8 (820), which is a fine through hole formed in the internal depressurization and bypass block 8 (890) of the internal depressurization and bypass member (800) through which high-pressure air present in the high-pressure container (10) passes, and the central through hole 8 (872) is composed of a connecting passage (30) space connected to the central through hole 8 (872) of the sealing member 8 (810), where the path of the hole 8 (870) formed in the center of the sealing support member 8 (820), which is the internal through hole 8 (870), ends and the space expands, and is characterized by being composed of a section in which depressurization proceeds as it passes through the narrow internal through hole 8 (870) inside the high-pressure container (10) and reaches the expanded space of the central through hole 8 (872).

[0098] A valve control unit (500) configured on the inside and one side of the pressure reducing valve block (20), which is configured to allow a user to adjust the supply amount of high-pressure air containing oxygen provided across the inside and outside of the pressure reducing valve block (20), comprises: a valve handle (570) that is rotated by hand to apply pressure to a nozzle member (120) installed inside the pressure reducing valve block (20) to discharge air containing oxygen, or releases the applied pressure to stop the discharge of air containing oxygen; a rotating pusher bolt (560) that is bolted to the valve handle (570) by a valve fixing bolt (580) to transmit the rotational force of the valve handle (570); an up-and-down moving square pusher member (540) that is screw-coupled to the lower part of the rotating pusher bolt (560) to convert the rotational force of the rotating pusher bolt (560) into up-and-down movement; and the up-and-down moving square pusher member (540). A square spring pressing member (530) coupled inside a rotation-prevention guide square hole (590) formed inside a pressure reducing valve block part (20) that prevents rotation, a vertical movement square pusher member catch (544) that restricts the downward movement of the square spring pressing member (530) inside the rotation-prevention guide square hole (590), a square projection (542) formed on the lower part of the vertical movement square pusher member (540) that is coupled to and restrained by a square groove (532) formed on the upper part of the square spring pressing member (530), a spring (520) seated in a spring upper seating groove (534) that seats the upper part of the spring (520) formed on the lower part of the square spring pressing member (530) and presses downward, and a nozzle pusher block (510) that forms a spring lower seating groove (518) on the upper part for seating the spring (520). Formed, and provided with an O-ring (516) so that oxygen-containing air does not flow through the outer surface of the nozzle pusher block (510),The downward pressing pressure transmitted from the spring (520) is transmitted so that the lower surface of the nozzle pusher block (510) presses the nozzle head (126), causing oxygen-containing air to be discharged through the fifth gap section (350) and supplied to the user along the air discharge path (35) through the air supply section (50) which supplies oxygen-containing air to the user to breathe through the fifth depressurization space section (250).

[0099] The explosion prevention part (90) for preventing the high-pressure container (10) from exploding due to an external impact is characterized by the fact that when an external impact occurs, internal pressure is transmitted through the explosion prevention connecting passage (39) to the end (97), and pressure is applied to the explosion prevention gap (96) formed between the end (97) and the open hole (98) through which the explosion prevention part (90) penetrates, causing a crack, and the internal pressure flows out through the open hole (97) through the high-pressure container (10), thereby preventing the high-pressure container (10) from exploding.

[0100] The upper filling part (60) for filling the interior of the high-pressure container (10) with high-pressure air containing oxygen according to the specifications set by the regulations is configured according to the specifications set by the regulations and is composed of an upper air filling member (600) as a general term, and is configured by combining a sealing support member 6 (620) and a sealing member 6 (610) in the installation hole inside the upper air filling member (600) and locking it with a washer 6 (640) and a locking ring 6 (650), and high-pressure air containing oxygen is injected through the filling inlet 6 (660) by contacting the arc-shaped joint 6 (680) in the high-pressure oxygen-containing air tank, and the sealing projection 6 (612) and the sealing member 6 (610) formed to protrude inside the filling block 6 (690) are pushed by the internal pressure (10ap) of the high-pressure container existing inside the container, and the sealing projection 6 (612) and the sealing member 6 (610) The sealing member 6 (610), which is combined with the sealing support member 6 (620), is pushed back by the pressure of high-pressure oxygen-containing air injected through the filling port 6 (660) to maintain airtightness, thereby overcoming the internal pressure (10ap) of the high-pressure container, creating a gap between the sealing protrusion 6 (612) and the sealing member 6 (610), and high-pressure oxygen-containing air enters through the gap and enters the connecting passage (30) through the filling gap (630) formed between the sealing support member 6 (620) and the inner wall of the filling block (690), and is filled into the interior of the high-pressure container (10).

[0101] The bottom filling cover portion (70), which is assembled at the bottom of the high-pressure container (10) and is for filling the inside of the high-pressure container (10) with high-pressure air containing oxygen, is configured according to the specifications of the oxygen-containing air supply device and is configured as a bottom air filling port (700). A sealing support member (720) and a sealing member 7 (710) are combined in the installation hole inside the bottom air filling port (700) and locked with a washer (740) and a locking ring (750). High-pressure oxygen-containing air is injected from the high-pressure oxygen-containing air tank through the filling inlet 7 (760), which is a straight hole shape. The sealing protrusion (712) and the sealing member 7 (710), which are formed to protrude inside the filling block (790), are pushed by the internal pressure (10ap) of the high-pressure container present inside the container, and the sealing protrusion (712) and the sealing member 7 (710) are sealed. The sealing member 7 (710), which is combined with the sealing support member (720), is pushed back by the pressure of the high-pressure oxygen-containing air injected through the filling inlet 7 (760) for filling with oxygen-containing air, thereby overcoming the internal pressure (10ap) of the high-pressure container, creating a gap between the sealing protrusion (712) and the sealing member 7 (710), and the high-pressure oxygen-containing air enters through the gap and enters the interior of the high-pressure container (10) through the filling gap (730) formed between the sealing support member (720) and the inner wall of the filling block (790) to be filled.

[0102] The filling action of the internal pressure reduction and filling bypass section (80) described above is such that air filled from the upper filling section (60) flows through the connecting passage (30), and since the main pressure reduction member (100) is submerged by internal pressure, the air cannot flow, and the filling air moves toward the internal pressure reduction and filling bypass section (80), which is in the direction of the lower high-pressure container (10), through the connecting passage (30), which is the internal pressure reduction and filling bypass section connecting passage (38), and passes through the filling inlet 8 (860), passes through the central through hole 8 (872) of the sealing member 8 (810), and passes through the internal through hole 8 (870) formed in the center of the sealing support member 8 (820), which is a fine hole, because the internal through hole 8 (870) is formed finely to reduce the air pressure discharged through it, it is too fine to allow the amount of air filled at high pressure to pass through, and thus time is required for filling, so the sealing support High-pressure air pressure is formed to fill the member 8 (820), and the sealing member 8 (810) is pushed downward by the filling pressure, overcoming the internal pressure of the high-pressure container (10), and the filling pressure pushes the sealing support member 8 (820) that supports the sealing member 8 (810) out of the sealed state due to the internal pressure of the high-pressure container (10), so that a gap is created between the sealing member 8 (810) and the sealing projection 8 (812), allowing the filling air to flow, and the filling air flows through the filling gap 8 (830) between the sealing support member 8 (820) and the inner wall surface of the sealing support member 8 installation hole (895), and the filling process is completed into the inside (10a) of the high-pressure container by passing through the washer 8 (840) and the locking ring 8 (850).

[0103] The assembly sequence of the components of a portable refillable air breathing device with a built-in multi-stage depressurization structure 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 (700) in a high-pressure container (10) in which a reinforcing flange (12) is formed internally; the container lower female screw (15) of the high-pressure container (10) is screw-coupled with the bottom filling cover coupling screw (704); an internal depressurization and filling bypass section (80) is assembled to the lower part of the upper cap section (40) and is configured to simultaneously have a configuration for rapidly filling high-pressure air containing oxygen and a configuration for depressurizing the discharged high-pressure air; and an upper cap container upper sealing ring (15a) and an upper cap container lower sealing ring (15b) are formed in the upper cap section (40). A pressure reducing valve block (20) is configured by combining the upper sealing ring groove (15ah) of the upper cap container and the lower sealing ring groove (15bh) of the upper cap container, respectively, and screw-coupled with the upper female screw (14) of the container and the upper male screw (422) of the upper cap of the high-pressure container (10), and assembled on the upper part of the upper cap part (40), and is equipped with a valve configuration for reducing high-pressure air containing oxygen and a valve configuration for controlling the amount of air discharged; a main pressure reducing part (100) is combined inside the pressure reducing valve block (20) to reduce the pressure of high-pressure air containing oxygen to a level suitable for use by the user, and a connecting passage (30) is formed to transmit high-pressure air containing oxygen by reducing the pressure of the air through the main pressure reducing part (100); and a valve is configured on one side for the user to adjust the supply amount of high-pressure air containing oxygen, which is provided across the inside and outside of the pressure reducing valve block (20). A control unit (500) is coupled, and a pressure indicator (78) that informs the user of the pressure of high-pressure air containing oxygen filled inside the high-pressure container (10) is screw-coupled to the outside of the pressure reducing valve block (20).The above high-pressure container (10) is configured such that an explosion prevention part (90) is screw-coupled to prevent the high-pressure container (10) from exploding due to external impact, an upper filling part (60) is coupled to fill high-pressure air containing oxygen using a high-pressure air inlet of a standard specified by regulation inside the high-pressure container (10), and an air supply part (50) is coupled to supply air containing oxygen by depressurizing it so that it is suitable for the user to breathe through the connecting passage (30). The valve control part (500) is configured such that a nozzle pusher block (510) and a spring (520) are coupled to a circular valve installation space (512), a square spring pressing member (530) is coupled to a rotation-preventing square hole (590), and then a rotation pusher bolt (560) is coupled to a rotation pusher bolt through hole (556) formed in a rotation pusher bolt (560) and a valve fixing member (550), and rotation A vertically moving square pusher member (540) is coupled to the screw of a pusher bolt (560), the vertically moving square pusher member (540) is coupled to a square spring pressing member (530), and a coupling female screw (554) and a valve fixing coupling male screw (572) are coupled and fixed through a valve fixing member locking groove (552) formed in a valve fixing member (550), and a valve handle (570) is bolted to a rotating pusher bolt (560) that is locked with a locking ring 6 (562) so as not to be separated from the valve fixing member (550) by a valve handle (570) and a valve fixing bolt (580) to transmit rotational force of the valve handle (570), and the valve handle (570) is rotated by holding it with a hand to press and push a nozzle member (120) installed inside a pressure reducing valve block (20) to discharge air containing oxygen, or the applied pressure is released to stop the discharge of air containing oxygen. does.

[0104] The present invention is a portable refillable air breathing device equipped with a highly efficient multi-stage pressure reduction structure, which is compact and easy to carry by filling high-pressure air containing oxygen into a high-pressure-resistant container, and has the effect of increasing filling efficiency by using both standard filling and arbitrary filling ports, and reduces the high-pressure air through several stages to a pressure suitable for the user to breathe and stable before supplying it to the user.

[0105] In the following, according to the present invention

[0106] In a structure capable of combining the depressurization of high-pressure air and the filling of high-pressure air within the portable refillable air breathing device of the present invention, the structure comprises: a cylindrical high-pressure container (10) that rapidly fills air containing oxygen for breathing into a sealed container at high pressure and stores it for use after depressurizing it through a depressurization structure; a bottom filling cover part (70) assembled at the bottom of the high-pressure container (10) and sealed to preserve high-pressure air containing oxygen inside the high-pressure container (10); an upper cap part (40) coupled to the top of the high-pressure container (10) to maintain airtightness and withstand high pressure; and a depressurization valve block part (20) assembled at the top of the upper cap part (40) and equipped with a valve configuration for depressurizing high-pressure air containing oxygen and controlling the amount of discharged air, and an internal depressurization and filling structure assembled at the bottom of the upper cap part (40) and simultaneously equipped with a configuration for rapidly filling high-pressure air containing oxygen and a configuration for depressurizing discharged high-pressure air. It is characterized by being configured to include a bypass section (80).

[0107] In order for the above structures to function properly, the auxiliary components are as follows.

[0108] The present invention comprises, inside the pressure reducing valve block (20), a main pressure reducing unit (100) that reduces the pressure of high-pressure air containing oxygen to a level that is easy for the user to use, a connecting passage (30) that transmits high-pressure air containing oxygen by reducing the pressure of the air through the main pressure reducing unit (100), a valve control unit (500) configured on one side for the user to adjust the supply amount of high-pressure air containing oxygen to an appropriate amount and is provided over the inside and outside of the pressure reducing valve block (20), a pressure display unit (78) that informs the user of the pressure of high-pressure air containing oxygen filled inside the high-pressure container (10), an explosion prevention unit (90) for preventing the high-pressure container (10) from exploding due to external impact, and an upper part for filling high-pressure air containing oxygen using a high-pressure air inlet of a standard size determined by regulations inside the high-pressure container (10). It is characterized by being configured to include a filling section (60) and an air supply section (50) that supplies oxygen-containing air by depressurizing it to make it suitable for the user to breathe through the connecting passage (30).

[0109] To realize the objectives of the present invention, namely lightweighting, providing an air breathing device with a safe pressure suitable for breathing, and miniaturizing the breathing device, the necessary conditions are to achieve the tasks of improving pressure reduction capability and increasing resistance to the internal pressure of the container.

[0110] The increase in resistance to internal pressure of the primary high-pressure vessel (10) is achieved by reinforcing the interior rather than the exterior shape to enhance the aesthetics, and to achieve the intended result, a reinforcing flange (12) is formed inside and, through testing by a testing institution, it is confirmed that there is no problem even when the pressure to be used reaches twice the intended pressure.

[0111] With reference to FIG. 2, the present invention is characterized by having a reinforcing flange (12) formed to protrude inwardly from the inner wall surface of the central part inside the high-pressure container (10) and configured to protrude in a circular shape into the interior of the high-pressure container (10) to prevent shape deformation such as swelling of the central part of the high-pressure container (10) due to the internal pressure of the high-pressure filled air, and having a hole formed in the center to allow the high-pressure filled air to pass through, and having a reinforcing means that reinforces the high-pressure container (10) to respond to the increasing pressure and improves durability, and is configured by processing a homogeneous material in the shape of a metal rod to withstand high-pressure air pressure containing oxygen.

[0112] The structure for maintaining airtightness between the high-pressure container (10) and the upper cap portion (40) and between the high-pressure container (10) and the bottom filling cover portion (70) is described as follows.

[0113] 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 (15ah), which is the outer circumference groove of the upper cap part (40), and below the upper cap part male screw (422), a lower sealing ring (15b) of the upper cap container is fitted into the upper sealing ring groove (15bh), which is the outer circumference groove of the upper cap part (40), thereby maintaining airtightness.

[0114] A lower female screw (15) 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 (704) formed on the outer surface of the bottom filling cover part (70). Above the bottom filling cover coupling screw (704), a container bottom upper sealing ring (15c) is fitted into the container bottom upper sealing ring groove (702), which is an outer groove of the bottom filling cover part (70), and below the bottom filling cover coupling screw (704), a container bottom lower sealing ring (15d) is fitted into the container bottom lower sealing ring groove (15dh), which is an outer groove of the bottom filling cover part (70), thereby maintaining airtightness.

[0115] 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 threads and the high-pressure container (10) to explode.

[0116] In the present invention, as an example, it is possible to use compressed air with a pressure of 500 to 1000 ba for the compressed air entering the high-pressure container, but if compressed air with a pressure of 250 to 300 ba is used and injected into the container, it is stored at a pressure 250 to 300 times that of atmospheric pressure, so 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.

[0117] 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.

[0118] 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 a safe high-pressure vessel (10) capable of withstanding pressures of 600 to 1000 ba (atmospheres) can be provided by adding multiple reinforcings on the outside of the high-pressure vessel (10) in a shape similar to the reinforcing flanges.

[0119] Due to 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.

[0120] In addition, the high pressure air contained within the high-pressure container (10) must have a pressure reduction capability that allows the user to use the high pressure air comfortably.

[0121] 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.

[0122] 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 (15) of the high-pressure container (10), thereby leaving a residual thickness when cutting the high-pressure container (10).

[0123] 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 (70) 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 (15) 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.

[0124] 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.

[0125] In the present invention, a bottom filling cover part (70) is assembled at the bottom of the high-pressure container (10) by screwing it with a container bottom female screw (15) formed at the bottom of the high-pressure container (10) and a bottom filling cover coupling screw (704) formed on the outer periphery of the bottom filling cover part (70). 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 the bottom filling cover member (700), and screwed with the container bottom female screw (15) of the high-pressure container (10) and the bottom filling cover coupling screw (704). The structure in which the bottom filling cover part (70) engages with the lower edge of the high-pressure container (10) to withstand high internal pressure is such that the bottom of the container protrudes downward from the lower edge of the high-pressure container (10). The coupling projection (18) is coupled with the bottom filling cover coupling projection groove (708) of the bottom filling cover part (70), and the container bottom joining surface (19) formed on the lower edge of the high-pressure container (10) is in contact with the bottom filling cover joining surface (709) of the bottom filling cover part (70), 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 (708) of the bottom filling cover part (70), so that when the high-pressure container (10) swells and deforms due to high internal pressure, the bottom filling cover restraining projection (707) restrains the container bottom coupling projection (18) to withstand the high internal pressure.

[0126] In the present invention, an upper cap portion (40) is assembled on the upper part of the high-pressure container (10) by screwing together the upper female screw (14) formed on the upper part of the high-pressure container (10) and the upper cap portion male screw (422) formed on the outer periphery of the upper cap portion (40). The upper sealing ring (15a) and the lower sealing ring (15b) of the upper cap container are respectively fitted into the upper sealing ring groove (15ah) and the lower sealing ring groove (15bh) of the upper cap portion (40), and screwed together with the upper female screw (14) and the upper cap portion male screw (422) of the high-pressure container (10). The structure in which the upper cap portion (40) engages with the rim of the upper part of the high-pressure container (10) to withstand high internal pressure is such that the upper cap portion (40) is engaged with the upper cap portion (40) of the upper cap portion (40) by the upper cap portion protruding upward from the upper rim of the high-pressure container (10). The upper container joint surface (17) formed on the upper edge of the high-pressure container (10) is joined with the joint projection groove (412), and the upper container joint surface (17) formed on the upper edge of the high-pressure container (10) is in contact with the upper cap joint surface (414) of the upper cap part (40). The upper container joint projection (16) formed on the upper edge of the high-pressure container (10) is joined with the upper cap joint projection groove (412) of the upper cap part (40), so that when the high-pressure container (10) swells and deforms due to high internal pressure, the upper cap joint projection (413) restrains the upper container joint projection (16) to withstand the high internal pressure.

[0127] The higher the compression ratio of the air injected into the high-pressure container (10), the higher the ability of the high-pressure container (10) to withstand internal pressure, and if the internal air pressure is high, the high-pressure air must be reduced to a pressure that is convenient for the user to inhale, and the amount of air required must be continuously supplied.

[0128] The prerequisite for obtaining a portable air breathing apparatus is that the compression ratio of the air injected into the high-pressure container (10) will be high, and accordingly, a sturdy structure of the high-pressure container (10) and a pressure reduction capability are required. Therefore, the present invention aims to improve the pressure reduction capability by providing a pressure reduction means separate from the main pressure reduction member (100).

[0129] In addition, since the installation location of the pressure reduction means, which is separate from the main pressure reduction member (100) of the present invention, is located in the direction of the high-pressure container (10) that stores air, there is an inconvenience in that filling must be done for a long time by utilizing the same narrow passage as the pressure reduction passage. Therefore, the problem is solved by providing an internal pressure reduction and filling bypass section (80) that performs filling by utilizing a check valve structure that opens and closes according to the pressure difference of filling without using the pressure reduction passage, thereby bypassing the narrow passage and performing filling quickly.

[0130] The internal pressure reduction and filling bypass section (80) formed inside the high-pressure container (10) is characterized by a filling function configuration in which air containing oxygen filled from the upper filling section (60) passes through the bypass by opening a passage due to the pressure of the air filling the internal pressure reduction and filling bypass section (80) and fills, and a pressure reduction function configuration in which, when air containing oxygen is supplied through the air supply section (50) inside the high-pressure container (10), it passes through a passage that reduces pressure inside the high-pressure container (10).

[0131] The pressure reduction action of the internal pressure reduction and filling bypass section (80) is configured such that the internal pressure reduction and bypass section (470) is a section that further reduces the pressure to make it easier for the user to use the initially reduced pressure, and the internal pressure reduction and filling bypass section (80) serves to reduce the pressure for the first time when air is supplied through the air supply section (50) inside the high-pressure container (10), and the high-pressure filled air inside the high-pressure container (10) flows through the internal through hole 8 (870), which is a narrow space, and reaches the central through hole 8 (872), thereby reducing the pressure.

[0132] The above internal through hole 8 (870) is composed of a gap formed by the internal through hole 8 (870) of the sealing support member 8 (820), which is a fine through hole formed in the internal depressurization and bypass block 8 (890) of the internal depressurization and bypass member (800) through which high-pressure air present in the high-pressure container (10) passes, and the central through hole 8 (872) is composed of a connecting passage (30) space connected to the central through hole 8 (872) of the sealing member 8 (810), where the path of the hole 8 (870) formed in the center of the sealing support member 8 (820), which is the internal through hole 8 (870), ends and the space expands, and is characterized by being composed of a section in which depressurization proceeds as it passes through the narrow internal through hole 8 (870) inside the high-pressure container (10) and reaches the expanded space of the central through hole 8 (872).

[0133] The filling action of the internal pressure reduction and filling bypass section (80) described above is such that air filled from the upper filling section (60) flows through the connecting passage (30), and since the main pressure reduction member (100) is submerged by internal pressure, the air cannot flow, and the filling air moves toward the internal pressure reduction and filling bypass section (80), which is in the direction of the lower high-pressure container (10), through the connecting passage (30), which is the internal pressure reduction and filling bypass section connecting passage (38), and passes through the filling inlet 8 (860), passes through the central through hole 8 (872) of the sealing member 8 (810), and passes through the internal through hole 8 (870) formed in the center of the sealing support member 8 (820), which is a fine hole, because the internal through hole 8 (870) is formed finely to reduce the air pressure discharged through it, it is too fine to allow the amount of air filled at high pressure to pass through, and thus time is required for filling, so the sealing support High-pressure air pressure is formed to fill the member 8 (820), and the sealing member 8 (810) is pushed downward by the filling pressure, overcoming the internal pressure of the high-pressure container (10), and the filling pressure pushes the sealing support member 8 (820), which was sealed due to the internal pressure of the high-pressure container (10), so that a gap is created between the sealing member 8 (810) and the sealing projection 8 (812), allowing the filling air to flow, and the filling air flows through the filling gap 8 (830) between the sealing support member 8 (820) and the inner wall surface of the sealing support member 8 installation hole (895), and the filling proceeds into the inside (10a) of the high-pressure container by passing through the washer 8 (840) and the locking ring 8 (850).

[0134] To explain the operational relationship between the internal depressurization and filling bypass section (80) and the upper filling section (60), the upper filling section (60) for filling the interior of the high-pressure container (10) of the present invention with high-pressure air containing oxygen according to the specifications set by the regulations is configured according to the specifications set by the regulations, and all components belonging to the upper filling section (60) are collectively referred to as the upper air filling port (600). The sealing support member 6 (620) and the sealing member 6 (610) are combined in the installation hole inside the upper air filling port (600), and the sealing is secured by a washer 6 (640) and a locking ring 6 (650). High-pressure air is injected through the filling port inlet 6 (660) by contacting the arc-shaped joint 6 (680) in the high-pressure air tank, and the sealing projection 6 (612) formed to protrude inside the filling block 6 (690) and The sealing member 6 (610) is pushed by the internal pressure 6 (692) present inside the container, and the sealing protrusion 6 (612) and the sealing member 6 (610) maintain airtightness, but the high-pressure air injected through the filling port 6 (660) for air filling is pushed back by the sealing member 6 (610) combined with the sealing support member 6 (620) overcoming the internal pressure 6 (692), creating a gap between the sealing protrusion 6 (612) and the sealing member 6 (610), and the high-pressure air enters through the gap between the sealing protrusion 6 (612) and the sealing member 6 (610), enters the connecting passage (30) through the filling gap 6 (630) formed between the sealing support member 6 (620) and the inner wall of the filling block 6 (690), and is filled into the upper filling part connecting passage (36) which is the interior of the high-pressure container (10).

[0135] High-pressure air filled into the upper filling section connecting passage (36) flows through the connecting passage (30) from the upper filling section (60), and since the main pressure reducing member (100) is submerged by internal pressure, the air cannot flow. The filling air moves through the internal pressure reducing and filling bypass section connecting passage (38), which is the connecting passage (30), toward the internal pressure reducing and filling bypass section (80) in the direction of the lower high-pressure container (10). It passes through the filling inlet 8 (860) and the central through hole 8 (872) of the sealing member 8 (810). However, since the internal through hole 8 (870) is formed so finely to reduce the air pressure discharged through it, it is too fine to allow the amount of high-pressure filled air to pass through, and thus time is required for filling. Therefore, the sealing support High-pressure air pressure is formed to fill member 8 (820), and the sealing member 8 (810) and the filling pressure overcome the internal pressure of the high-pressure container (10) and are pushed downward. The filling pressure pushes the sealing support member 8 (820), which was sealed due to the internal pressure of the high-pressure container (10), so that the sealing support member 8 (820) supporting the sealing member 8 (810) is pushed by G8 (894), creating a gap between the sealing member 8 (810) and the sealing projection 8 (812), allowing filling air to flow. The filling air flows through the filling gap 8 (830) between the sealing support member 8 (820) and the inner wall surface of the sealing support member 8 installation hole (895), passes through the washer 8 (840) and the locking ring 8 (850), and proceeds to fill into the inside (10a) of the high-pressure container, so that when the user uses it, the air that has been depressurized is the main It passes through a pressure reduction member (100) to achieve pressure reduction and is safely supplied at a pressure suitable for breathing.

Claims

A cylindrical high-pressure container (10) that stores air containing oxygen for breathing by filling it into a sealed container at high pressure and depressurizing it through a depressurization structure for use, and A bottom filling cover part (70) assembled at the bottom of the high-pressure container (10), filled with high-pressure air containing oxygen inside the high-pressure container (10), and sealed to preserve the high-pressure air, and An upper cap portion (40) that is coupled to the upper part of the high-pressure vessel (10) to maintain airtightness and withstand high pressure, and It includes a pressure reducing valve block (20) assembled on the upper cap part (40) and equipped with a configuration for reducing high-pressure air and a valve configuration for controlling the amount of discharged air, and Inside the above pressure reducing valve block (20), A main pressure reducing unit (100) that reduces high-pressure air pressure to a level that is easy for the user to use, and A connecting passage (30) that transmits high-pressure oxygen-containing air by passing it through the main pressure reduction section (100) and reducing the pressure of the air, and On the outside of the above pressure reducing valve block (20), A valve control unit (500) configured on one side for a user to adjust the supply amount of high-pressure air containing oxygen to an appropriate amount, and A pressure display unit (78) that informs the user of the pressure of high-pressure air containing oxygen filled inside the above-mentioned high-pressure container (10), and The above high-pressure container (10) has an explosion prevention part (90) to prevent the high-pressure container (10) from exploding due to external impact, and An upper filling part (60) for filling high-pressure air containing oxygen using a high-pressure air inlet of a standard size determined by regulations inside the above-mentioned high-pressure container (10), and It includes an air supply unit (50) that supplies oxygen-containing air by depressurizing it to make it suitable for the user to breathe through the above connecting passage (30), and The above main pressure reduction unit (100) is, It is provided in the main pressure reducing unit installation space (102) inside the above pressure reducing valve block (20) and is in communication with the valve control unit (500), A nozzle member (120) coupled to the upper part of a movable nozzle member (130) capable of forward and backward movement, and a nozzle guide member (110) that guides the movable nozzle member (130), and A movable nozzle member (130) coupled to be able to move back and forth according to the adjustment of the valve control part (500) 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 nozzle member (120) and a movable nozzle member (130) are configured to be movably housed within the internal space formed by the nozzle guide member (110) and the pressure regulating depressurizing member (140) according to the control of the valve control unit (500). A portable filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized in that a movable nozzle member (130) is pushed by high-pressure air filled in a high-pressure container (10), and a nozzle member (120), which is one body with the movable nozzle member (130), comes into contact with a part of the valve control unit (500) and pushes, thereby controlling the valve so that high-pressure air is discharged or locked. In Article 1, The upper seal of the high-pressure container (10) is maintained by forming a female screw (14) on the upper inner surface of the high-pressure container (10) and coupling with a male screw (422) formed on the upper cap part (40), and above where the male screw (422) 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 container, which is an outer groove of the upper cap part (40), and below where the male screw (422) 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 container, which is an outer groove of the upper cap part (40), thereby maintaining a seal. The seal at the bottom of the high-pressure container (10) is maintained by forming a container bottom female screw (15) on the inner surface of the bottom of the high-pressure container (10) and coupling it with a bottom filling cover coupling screw (604) formed on the outer surface of the bottom filling cover part (60), and above where the bottom cover coupling screw (604) is formed, a 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), and below where the bottom cover coupling screw (604) is formed, a 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), thereby maintaining a seal. The reinforcing means of the high-pressure vessel (10) is formed by contacting the inner wall surface of the central part inside the high-pressure vessel (10) 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 high-pressure filled air, and is configured with one reinforcing flange (12) or multiple reinforcing flanges as the pressure of the high-pressure filled air increases to respond to the increasing pressure, thereby improving durability. A portable inflatable air breathing device equipped with a combined filling and multi-stage depressurization structure, characterized by being constructed by cutting a homogeneous material in the shape of a metal rod to withstand high air pressure. In Article 1, One or more 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 container (10) is formed with sufficient thickness, and a portion is machined to reduce the weight of the air breathing device so that one or more external reinforcing protrusions (13) remain, thereby reinforcing the high-pressure container (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 (15) 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 filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized by dispersing multiple external reinforcing protrusions (13) on the outside of the high-pressure container (10). In Article 1, A bottom filling cover portion (70) is formed at the bottom of the high-pressure container (10), and a container bottom female screw (15) formed at the bottom of the high-pressure container (10) and It is assembled by screw coupling with a bottom filling cover coupling screw (704) formed on the outer circumference of the bottom filling cover part (70), and The upper sealing ring (15c) and the lower sealing ring (15d) of the container bottom are respectively fitted into the upper sealing ring groove (15ch) and the lower sealing ring groove (15dh) of the container bottom of the bottom filling cover member (700), and are screw-coupled with the lower female screw (15) of the high-pressure container (10) and the bottom filling cover coupling screw (704). A structure in which a bottom filling cover part (70) is engaged with the lower edge of a high-pressure container (10) to withstand high internal pressure is A container bottom connecting projection (18) protruding downward from the lower edge of the high-pressure container (10) is connected to a bottom filling cover connecting projection groove (708) of the bottom filling cover part (70), and The lower rim of the container bottom joint surface (19) formed on the lower edge of the high-pressure container (10) contacts the bottom filling cover joint surface (709) of the bottom filling cover part (70), 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 (708) of the bottom filling cover part (70), so that when the high-pressure container (10) swells and deforms due to high internal pressure, the bottom filling cover restraining projection (707) restrains the container bottom coupling projection (18) to withstand the high internal pressure. The upper cap portion (40) on the upper part of the high-pressure container (10) is formed on the upper part of the container upper female screw (14) and It is assembled by screw coupling with the upper cap part male screw (422) formed on the outer circumference of the upper cap part (40), and The upper sealing ring (15a) of the upper cap container and the lower sealing ring (15b) of the upper cap container are respectively fitted into the upper sealing ring groove (15ah) and the lower sealing ring groove (15bh) of the upper cap part (40), and are screw-coupled with the upper female screw (14) of the container and the upper male screw (422) of the high-pressure container (10). A structure in which an upper cap part (40) is engaged with the upper edge of a high-pressure container (10) to withstand high internal pressure is A container top connecting projection (16) protruding upward from the upper edge of the high-pressure container (10) is connected to an upper cap connecting projection groove (412) of the upper cap part (40), and The upper container joint surface (17) formed on the upper edge of the high-pressure container (10) comes into contact with the upper cap joint surface (414) of the upper cap part (40), and A portable filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized in that a container upper connecting projection (16) formed on the upper edge of a high-pressure container (10) is coupled with an upper cap part connecting projection groove (412) of an upper cap part (40), and the upper cap part restraining projection (413) restrains the container upper connecting projection (16) to withstand the high-pressure internal pressure when the high-pressure container (10) swells and deforms due to high pressure. In Article 1, It includes an internal pressure reduction and filling bypass section (80) assembled at the lower part of the upper cap section (40) and having a configuration for rapidly filling high-pressure air containing oxygen and a configuration for reducing the pressure of the discharged high-pressure air. The internal pressure reduction and filling bypass section (80) formed inside the high-pressure vessel (10) has a filling function configuration that allows air containing oxygen filled from the upper filling section (60) to pass through the internal pressure reduction and filling bypass section (80) as a bypass to be filled, and A portable filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized by having a configuration that performs a depressurization action by depressurizing the inside of the high-pressure container (10) when oxygen-containing air is supplied through the air supply unit (50) inside the high-pressure container (10). In Article 1, The above main pressure reduction unit (90) refers to the main pressure reduction member (100), and the above 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), 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 air containing reduced oxygen by gradually reducing the pressure of the air containing high-pressure oxygen filled inside the high-pressure container (10) in sequential sections so that the user can breathe comfortably. 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 corresponding section where high-pressure air flows to the cross-sectional area of ​​the gap portion, and A portable inflatable air breathing device equipped with an inflatable and multi-stage depressurization combined structure, characterized in that each of the above depressurization sections can perform depressurization by omitting the space portion of the corresponding section. In Paragraph 6, The above first depressurization section is a section in which the air containing oxygen filled at high pressure inside the high-pressure container (10) is first depressurized. High-pressure air filled inside the high-pressure container (10) passes through a narrow space and reaches the first depressurization space (210), which is an expanded space, and depressurization proceeds. The pressure is reduced as it passes through the first gap section (310) inside the high-pressure vessel (10) and reaches the first reduced-pressure space section (210), which is an expanded space. The above-mentioned high-pressure vessel (10) is composed of an interior, a first gap section (310), and a first pressure reduction space section (210). The first gap section (310) is configured to be coupled with a gap female screw (142) formed inside a cylindrical main pressure reducing member installation space (102) inside a pressure reducing valve block section (20) and a gap male screw (144) formed on the outside of a locking pressure regulating pressure reducing member (140), so that air containing high-pressure oxygen flows through the gap between the threads and grooves formed by the gap female screw (142) and the gap male screw (144). The first 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 a pressure reduction valve block (20) at the point where the path of the first gap section (310) ends, and a space formed by passing through a gap male screw (144) formed on the outside of a locking pressure control pressure reduction member (140) and omitting the gap male screw (144). 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 pressure reducing valve block (20) is sealed through the sealing member 1 (116), and A portable filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized by being composed of a section in which depressurization proceeds after passing through a first gap section (310) inside the high-pressure container (10) and reaching a first depressurization space section (210), which is an expanded space. In Article 7, The above-mentioned second depressurization section is a section in which the pressure that was initially depressurized after passing through the first depressurization section is further depressurized. High-pressure air filled inside the high-pressure container (10) passes through a narrow space and reaches the first depressurization space (210), which is an expanded space, and depressurization proceeds. Depressurization proceeds as it passes through the second gap section (320) from the first depressurization space section (210) and reaches the second depressurization space section (220), which is an expanded space. It is composed of a first pressure reduction space (210), a second gap section (320), and a second pressure reduction space (220), and 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 depressurization space (220) is where the path of the second gap section (320) ends and the space expands, The interior of the movable nozzle member (130) is ground into an internal space (222), an interspace 2 (226) which is the remaining space after the movable nozzle member (130) is coupled to the nozzle guide member (110), and an interspace 1 (224) between the nozzle guide member (110), the rear end, and the locking pressure control pressure reducing member (140). A portable inflatable air breathing device equipped with an inflatable and multi-stage depressurization combined structure, characterized by being composed of a section in which depressurization proceeds from a first depressurization space (210), through a second gap section (320), and reaches a second depressurization space (220), which is an expanded space. In Article 7, The above third pressure reduction section is a section that further reduces the pressure after passing through the second pressure reduction section 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. The pressure reduction proceeds as it passes through the third gap section (330) from the second pressure reduction space section (220) to the third pressure reduction space section (230), which is an expanded space. It is composed of a second pressure reduction space (220), a third gap section (330), and a third pressure reduction space (230), and 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 air containing high-pressure oxygen 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 equipped with an inflatable and multi-stage depressurization combined structure, characterized by being composed of a section in which depressurization proceeds from a second depressurization space (220), through a third gap section (330), and into an expanded space, a third depressurization space (230). In Paragraph 6, 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. Depressurization proceeds as it passes through the fourth gap section (340) from the third depressurization space section (230) and reaches the fourth depressurization space section (240), which is an expanded space. It is composed of a third pressure reduction space (230), a fourth gap section (340), and a fourth pressure reduction space (240), and 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 air containing high-pressure oxygen 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 containing high-pressure oxygen filled 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 valve control part (500), the gap between the sealing member 2 (118) and the sealing projection (132) increases according to the distance of pressing, so the discharged oxygen-containing air increases, and when it moves upward, the gap between the sealing member 2 (118) and the sealing projection (132) decreases, so the discharged oxygen-containing air decreases, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged oxygen-containing air is submerged. The fourth depressurization space (240) is where the path of the fourth gap section (330) ends and the space expands, It is composed of a space formed by a wall surface formed along the circumference of the lower outer surface of the nozzle member (120), the upper surface (139) of the movable nozzle member, the 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 equipped with an inflatable and multi-stage depressurization combined structure, characterized by being composed of a section in which depressurization proceeds from the third depressurization space (230), through the fourth gap section (330), and reaches the fourth depressurization space (240), which is an expanded space. In Paragraph 6, 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 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 fourth depressurization space (240), which is an expanded space, and depressurization proceeds. Depressurization proceeds as it passes through the fifth gap section (350) from the fourth depressurization space section (240) and reaches the fifth depressurization space section (250), which is an expanded space. It is composed of a fourth pressure reduction space (240), a fifth gap section (350), and a fifth pressure reduction space (250), and 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 air containing high-pressure oxygen 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 valve control part (500), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the amount of oxygen-containing air discharged, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the amount of oxygen-containing air discharged, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the oxygen-containing air discharged is formed to be submerged. The fifth depressurization space (250) is where the path of the fifth gap section (350) ends and the space expands, The nozzle member (120) is configured with a space formed between a circumferential groove (122) of the nozzle machined along the circumference at the center of the outer circumferential surface of the nozzle member (120) and the inner surface of the hollow nozzle guide (112). A portable inflatable air breathing device equipped with an inflatable and multi-stage depressurization combined structure, characterized by being composed of a section in which depressurization proceeds from the fourth depressurization space (240), through the fifth gap section (350), and reaches the fifth depressurization space (250), which is an expanded space. In paragraph 6, 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. Depressurization proceeds as it passes through the 6th gap section (360) from the 5th depressurization space section (250) and reaches the 6th depressurization space section (260), which is an expanded space. It is composed of a fifth pressure reduction space (250), a sixth gap section (360), and a sixth pressure reduction space (260), and 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 air containing high-pressure oxygen existing in the fifth depressurization space section (250) passes. When the nozzle head (126) of the nozzle member (120) is pressed downward by the valve control part (500), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the amount of oxygen-containing air discharged, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the amount of oxygen-containing air discharged, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the oxygen-containing air discharged is formed to be submerged. The sixth depressurization space (260) is where the path of the sixth gap section (360) ends and the space expands, The nozzle head (126), which is the tip of the nozzle member (120), is protruded, and the space is composed of the lower surface (514) of the circular installation space (512), which is the internal space of the pressure reducing valve block (20) where the valve control part (500) is installed, and the lower surface of the nozzle pusher block (510). A portable inflatable air breathing device equipped with an inflatable and multi-stage depressurization combined structure, characterized by being composed of a section in which depressurization proceeds from the fifth depressurization space (250) through the sixth gap section (360) and reaches the sixth depressurization space (260), which is an expanded space. In Paragraph 5, The pressure reduction action of the internal pressure reduction and filling bypass section (80) above is, The 7th depressurization section is a section where the initially depressurized pressure is further reduced to make it more convenient for the user to use. The internal depressurization and filling bypass section (80) is configured to first depressurize when oxygen-containing air is supplied through the air supply section (50) inside the high-pressure container (10). Air containing high-pressure oxygen filled inside the high-pressure container (10) flows through the seventh gap section (370), which is a narrow space, and reaches the seventh depressurization space section (270), where depressurization proceeds. The above seventh gap section (370) is through which air containing high-pressure oxygen present in the high-pressure vessel (10) passes. It is composed of a gap formed by an internal through hole (870) of a sealing support member (372), which is a fine through hole formed in a sealing support member (820) provided inside an internal pressure reduction and bypass block (890) of an internal pressure reduction and bypass member (800), and The seventh pressure relief space (270) is formed in the center of the sealing support member (372), which is the seventh gap section (370), where the path of the hole (870) ends and the space expands. The sealing member 5 (810) is composed of a connecting passage (30) space connected to a central through hole (872), and A portable filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized by being composed of a section in which depressurization proceeds by passing through a seventh gap section (370) inside a high-pressure container (10) and reaching a seventh depressurization section (270), which is an expanded space. In Article 1, Provided across the inside and outside of the above pressure reducing valve block (20), A valve control unit (500) configured on one side and inside a pressure reducing valve block (20) for a user to adjust and use high-pressure air containing oxygen to an appropriate supply amount, A valve handle (570) that rotates by hand to apply pressure to a nozzle member (120) installed inside a pressure reducing valve block (20) to discharge air containing oxygen, or releases the applied pressure to stop the discharge of air containing oxygen, and A rotating pusher bolt (560) that transmits the rotational force of the valve handle (570) by being bolted together with the valve handle (570) and the valve fixing bolt (580), and A vertically moving square pusher member (540) that converts the rotational force of the above-mentioned pivot pusher bolt (560) into vertical movement by screwing it to the lower part of the above-mentioned pivot pusher bolt (560), and A square spring pressing member (530) coupled inside a rotation-prevention guide square hole (590) formed inside a pressure reducing valve block part (20) that restrains the above-mentioned vertically moving square pusher member (540) from rotating, and A vertically moving square pusher member catch (544) that restricts the downward movement of the square spring pressing member (530) inside the above-mentioned anti-rotation guide square hole (590), and A square projection (542) formed on the lower part of the vertically moving square pusher member (540) is coupled to and restrained by a square groove (532) formed on the upper part of the square spring pressing member (530). A spring (520) seated in a spring upper seating groove (534) that seats the upper part of the spring (520) formed at the lower part of a square spring pressing member (530) and presses downward, and The nozzle pusher block (510) is formed with a spring lower seating groove (518) formed on the upper side for seating the spring (520), and An O-ring (516) is provided to prevent oxygen-containing air from flowing through the outer surface of the nozzle pusher block (510), and A portable refillable air breathing device equipped with a refill and multi-stage depressurization combined structure, characterized in that a downward pressing pressure transmitted from the above spring (520) is transmitted so that the lower surface of the nozzle pusher block (510) presses the nozzle head (126), thereby discharging oxygen-containing air through the fifth gap section (350) and supplying oxygen-containing air to the user along the air discharge path (35) through the air supply section (50) which supplies oxygen-containing air to the user to breathe through the fifth depressurization space section (250). In Article 1, The explosion prevention part (90) for preventing the high-pressure container (10) from exploding due to external impact is, When an external shock occurs, internal pressure is transmitted through the explosion-proof connecting passage (39) and pressure is transmitted to the end (97), A portable filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized in that pressure is applied to the explosion-proof gap (96) formed between the end (97) and the explosion-proof part (90) through which the open hole (98) penetrates, causing a crack, and internal pressure flows out through the open hole (97) and the high-pressure container (10), thereby preventing the high-pressure container (10) from exploding. In Paragraph 5, The upper filling part (60) for filling the interior of the above-mentioned high-pressure container (10) with high-pressure air containing oxygen according to the specifications set by the regulations is configured according to the specifications set by the regulations and is composed of an upper air filling member (600) as a general term. It is configured by combining a sealing support member 6 (620) and a sealing member 6 (610) into an installation hole inside an upper air-filling member (600) and locking it with a washer 6 (640) and a locking ring 6 (650). In an air tank containing high-pressure oxygen, the arc-shaped joint 6 (680) is connected and high-pressure oxygen containing air is injected through the filling inlet 6 (660). A sealing projection 6 (612) and a sealing member 6 (610) formed to protrude inside a filling block 6 (690) are pushed by the internal pressure (10ap) of a high-pressure container present inside the container, and the sealing projection 6 (612) and the sealing member 6 (610) maintain airtightness, but Due to the filling pressure 6 (662), which is the pressure of high-pressure oxygen-containing air injected through the filling port 6 (660) for filling with oxygen-containing air, the sealing member 6 (610) combined with the sealing support member 6 (620) overcomes the internal pressure (10ap) of the high-pressure container and is pushed backward, creating a gap between the sealing projection 6 (612) and the sealing member 6 (610), and high-pressure oxygen-containing air enters through the gap and enters the connecting passage (30) through the filling gap (630) formed between the sealing support member 6 (620) and the inner wall of the filling block (690), and is filled into the interior of the high-pressure container (10). A portable filling air breathing device equipped with a filling and multi-stage decompression combined structure, characterized in that filling is completed through the filling action of the internal decompression and filling bypass section (80). In Article 1, A bottom filling cover part (70) assembled at the bottom of the high-pressure container (10) and for filling the inside of the high-pressure container (10) with high-pressure air containing oxygen, is, Constructed according to the specifications of an oxygen-containing air supply device, It is composed of a bottom air filling port (700) in general terms, and It is configured by combining a sealing support member (720) and a sealing member 7 (710) in an installation hole inside a bottom air filling port (700) and locking it with a washer (740) and a locking ring (750). High-pressure oxygen-containing air is injected into a high-pressure oxygen-containing air tank through a straight hole-shaped filling inlet 7 (760), and A sealing projection (712) and a sealing member 7 (710) formed to protrude inside the filling block (790) are pushed by the internal pressure (10ap) of the high-pressure container present inside the container, and the sealing projection (712) and the sealing member 7 (710) maintain airtightness, The filling pressure 7 (762), which is the pressure of high-pressure oxygen-containing air injected through the filling inlet 7 (760) for filling oxygen-containing air, is A portable filling air breathing device equipped with a filling and multi-stage depressurization combined structure, characterized in that high-pressure oxygen injected through a filling inlet 7 (760) for filling with oxygen-containing air is pushed back by the sealing member 7 (710) combined with the sealing support member (720) overcoming the internal pressure (10ap) of the high-pressure container, creating a gap between the sealing protrusion (712) and the sealing member 7 (710), and high-pressure oxygen-containing air enters through the gap and enters the interior of the high-pressure container (10) through a filling gap (730) formed between the sealing support member (720) and the inner wall of the filling block (790) to be filled. In Paragraph 5, The filling action of the internal depressurization and filling bypass section (80) is such that air filled from the upper filling section (60) flows through the connecting passage (30), and since the main depressurization member (100) is submerged by internal pressure, the air cannot flow, and the filling air moves through the internal depressurization and filling bypass section connecting passage (38), which is the connecting passage (30), toward the internal depressurization and filling bypass section (80) in the direction of the lower high-pressure container (10). Since the internal through hole 8 (870) formed in the center of the sealing support member 8 (820), which is a micro-hole, is formed so finely to reduce the pressure of the air discharged through the internal through hole 8 (870), it is too fine to allow the amount of air filled at high pressure to pass through, and thus time is required for filling. A filling and multi-stage depressurization combined structure is provided, characterized in that high-pressure air pressure is formed to fill the sealing support member 8 (820), and the sealing member 8 (810) is pushed downward by the filling pressure, overcoming the internal pressure of the high-pressure container (10), and the filling pressure pushes the sealing support member 8 (820) supporting the sealing member 8 (810), causing a gap to form between the sealing member 8 (810) and the sealing projection 8 (812), allowing filling air to flow, and the filling air flows through the filling gap 8 (830) between the sealing support member 8 (820) and the inner wall surface of the sealing support member 8 installation hole (895), passing through the washer 8 (840) and the locking ring 8 (850) to complete the filling process into the inside (10a) of the high-pressure container. Portable rechargeable air breathing device. In Article 1, The assembly sequence of the components of the portable refillable air breathing device equipped with the above-mentioned refill and multi-stage depressurization combined structure is as follows: the upper sealing ring (15c) and the lower sealing ring (15d) of the container bottom are respectively fitted into the upper sealing ring groove (15ch) and the lower sealing ring groove (15dh) of the container bottom of the bottom cover member (700) of the high-pressure container (10) in which a reinforcing flange (12) is formed inside, and the lower female screw (15) of the high-pressure container (10) is screw-coupled with the bottom filling cover coupling screw (704). An internal pressure reduction and filling bypass section (80) is combined and configured to be assembled at the lower part of the upper cap section (40) and to simultaneously have a configuration for rapidly filling high-pressure air containing oxygen and a configuration for reducing the pressure of the discharged high-pressure air. 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, A pressure reducing valve block (20) is combined and configured to be assembled on the upper part of the upper cap part (40), and is equipped with a configuration for reducing high-pressure air containing oxygen and a valve configuration for controlling the amount of air discharged. Inside the above pressure reducing valve block (20), A main pressure reduction unit (100) that reduces high-pressure air pressure containing oxygen to a level suitable for use by the user is combined, and A connecting passage (30) is formed to transmit high-pressure oxygen-containing air by passing it through the main pressure reduction section (100) and reducing the pressure of the air. Provided across the inside and outside of the above pressure reducing valve block (20), A valve control unit (500) is coupled, which has a valve configured on one side for the user to adjust the supply amount of high-pressure air containing oxygen. On the outside of the above pressure reducing valve block (20), A pressure indicator (78) that informs the user of the pressure of high-pressure air containing oxygen filled inside the high-pressure container (10) is screw-coupled, and An explosion prevention part (90) for preventing the high-pressure container (10) from exploding due to external impact is screw-coupled to the above high-pressure container (10), and An upper filling part (60) for filling high-pressure air containing oxygen is coupled to the inside of the above-mentioned high-pressure container (10) using a high-pressure air inlet of a standard size determined by regulations, and It is configured by combining an air supply unit (50) that supplies oxygen-containing air by depressurizing it to make it suitable for the user to breathe through the above connecting passage (30). The valve control unit (500) combines a nozzle pusher block (510) and a spring (520) in a circular valve installation space (512), and combines a square spring pressing member (530) in a square hole (590) that prevents rotation, and then A rotating pusher bolt (560) is coupled to a rotating pusher bolt through hole (556) formed in a rotating pusher bolt (560) and a valve fixing member (550), and a vertically moving square pusher member (540) is coupled to a screw of the rotating pusher bolt (560). A vertically moving square pusher member (540) is attached to a square spring pressing member (530), and The connecting female screw (554) and the valve fixing connecting male screw (572) are connected and fixed through the valve fixing member locking groove (552) formed in the valve fixing member (560), and A valve handle (570) and a valve fixing bolt (580) are bolted to a rotating pusher bolt (560) that is locked with a locking ring 6 (562) so as not to be separated from the valve fixing member (550), A portable refillable air breathing device equipped with a refill and multi-stage depressurization combined structure, characterized by holding the valve handle (570) that transmits rotational force of the valve handle (570) with a hand and rotating it to press and press the nozzle member (120) installed inside the depressurization valve block (20) to discharge air containing oxygen, or releasing the applied pressure to stop the discharge of air containing oxygen.

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